Products Home / Optomechanical Components / Optomechanical Mounts / Optical Mirror Mounts / Polaris® Mirror Mounts / Polaris® Kinematic Glue-In Mirror MountsPolaris® Kinematic Glue-In Mirror Mounts
- Glue Mount Design for Minimal Optic Distortion
- Matched Actuator/Body Pairs Minimize Drift and Backlash
- Heat Treating Minimizes Temperature-Dependent Hysteresis
- Sapphire Seats Ensure Long-Term Stability
POLARIS-K19G4
Ø19 mm Mirror Mount
(Mirror Not Included)
POLARIS-K1C4
Ø1" Mirror Mount,
142° Clear Edge
Please Wait
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The POLARIS-K1C4 has a 142° clear edge that allows for low angles of incidence (see the Usage Tips tab). The POLARIS-K05C4 features a 145° clear edge.
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The POLARIS-K19G4 features two cutouts in the glue plane to increase the transmissive clear aperture. The POLARIS-K05G4 and POLARIS-K1G4 also feature these cutouts.
Features
- Machined from Heat-Treated Stainless Steel with Low Coefficient of Thermal Expansion (CTE)
- Glue-In Optic Mount Design for Minimal Optic Distortion
- Hardened Stainless Steel Ball Contacts with Sapphire Seats for Durability and Smooth Movement
- Matched Actuator/Body Pairs Provide Smooth Kinematic Adjustment
- Testing Guarantees <1 μrad Deviation after 12.5 °C Temperature Cycle (See the Test Data Tab for Details)
- Passivated Stainless Steel Surface Ideal for Vacuum and High-Power Laser Cavity Applications
- Custom Mount Configurations Available by Contacting Tech Support
Polaris® Kinematic Glue-In Mirror Mounts are the ultimate solution for applications requiring stringent long-term alignment stability.
Optic Mounting
These mounts feature a mounting cell in which an optic can be permanently fixed with an optical adhesive. This mounting technique results in significantly less optical surface distortion than traditional methods based on setscrews or flexure mechanisms. For a tutorial on the use of adhesive to secure an optic to a mount and data demonstrating the minimal wavefront distortion introduced by this process, please see the Glue-In Tutorial tab. We also offer Low-Distortion Polaris Kinematic Mirror Mounts that secure optics without the use of an adhesive.
Design
Machined from heat-treated stainless steel, Polaris mounts utilize precision-matched adjusters with ball contacts and sapphire seats to provide smooth kinematic adjustment. As shown in the Test Data tab, these mounts have undergone extensive testing to ensure high-quality performance. The Polaris design addresses all of the common causes of beam misalignment; please refer to the Design Features tab for detailed information.
Post Mounting
Polaris mirror mounts are equipped with #8 (M4) counterbores for post mounting. Select mounts also include Ø2 mm alignment pin holes around the mounting counterbore, allowing for precision alignments when paired with our Ø1/2" or Ø1" Posts for Polaris Mirror Mounts. See the Usage Tips tab for more recommendations about mounting configurations.
Cleanroom and Vacuum Compatibility
All Polaris mounts, removable knobs, lock nuts, and locking collars sold on this page are designed to be compatible with cleanroom and vacuum applications. See the Specs tab and the Design Features tab for more information.
| Item # | POLARIS-K05C4 | POLARIS-K05G4 | POLARIS-K19G4 | POLARIS-K1C4 | POLARIS-K1G4 |
|---|---|---|---|---|---|
| Optic Size | Ø1/2" | Ø1/2" | Ø19 mm | Ø1" | Ø1" |
| Glue Plane Style | Clear Edge | Two Transmissive Cutouts | Two Transmissive Cutouts | Clear Edge | Two Transmissive Cutouts |
| Optic Thickness (Min) | No Minimum Thickness | ||||
| Number of Adjusters | Two | ||||
| Adjuster Drive | 5/64" Hex, Ø0.07" Side Adjustment Holes | ||||
| Adjuster Pitch | 130 TPI Matched Actuator/Body Pairs | 100 TPI Matched Actuator/Body Pairs | |||
| Measured Point-to-Point Mechanical Resolution per Adjuster |
5 µrad (Typical) 2 µrad (Achievable) |
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| Measured Adjuster Lock Mechanical Resolution per Adjustera |
5 µrad (Typical) 2 µrad (Achievable) |
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| Resolutionb | ~11.0 mrad/rev | ~7.0 mrad/rev | ~7.7 mrad/rev | ||
| Front Plate Translation (Max) | N/Ac | ||||
| Mechanical Angular Range (Nominal) | ±4° | ||||
| Beam Deviationd After Thermal Cycling | <1 μrad | ||||
| Recommended Optic Mounting Adhesivee |
Norland Optical Adhesive 61 (NOA61) or EPO-TEK 301-2FL Low-Stress Optical Epoxy | ||||
| Mountingf | Two #8 (M4) Counterbores | ||||
| Alignment Pin Holes | Two Ø2 mm Holes for DIN 7-m6 Ground Dowel Pin at Each Counterbore | ||||
| Vacuum Compatibilityg | 10-9 Torr at 25 °C with Proper Bake Out; 10-5 Torr at 25 °C without Bake Out DuPont Krytox® LVP High-Vacuum Grease Vapor Pressure: 10-13 Torr at 20 °C ,10-5 Torr at 200 °C EPO-TEK® 353ND (353NDPK) Epoxy Meets Low Outgassing Standards NASA ASTM E595, Telcordia GR-1221 |
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| Operating Temperature Range | -30 to 200 °C | ||||
Polaris® Mirror Mounts Test Data
These Polaris Glue-In Kinematic Mirror Mounts have undergone extensive testing to ensure high-quality performance. After mounting a Polaris mount to a Ø1" Post for Polaris Mirror Mounts, the mirror and post assembly was secured to a stainless steel optical table in a temperature-controlled environment. A beam from an independently temperature-stabilized laser diode was reflected by the mirror onto a position sensing detector.
Positional Repeatability After Thermal Shock
Purpose: This testing was done to determine how reliably our glue-in mounts return the mirror, without hysteresis, to its initial position. These measurements show that the alignment of the optical system is unaffected by the temperature shock.
Procedure: The temperature of each mirror mount under test was raised by at least 12.5 °C and maintained for a given soak time. Heat was applied to the front plate of the mount to raise its temperature, which was measured with a thermocouple attached to the bottom of the back plate. Please note that the temperature of the front plate will be slightly higher than what was measured due to the position of the thermocouple on the back plate. After soaking, the temperature of the mirror mount was returned to the starting temperature. The results of these tests are shown below.
Results: As can be seen in the plots in the expandable tables below, when the Polaris mounts were returned to their initial temperature, the angular position (both pitch and yaw) of the mirrors returned to within 1 µrad of its initial position. The performance of the Polaris was tested further by subjecting the mount to repeated temperature change cycles. After each cycle, the mirror’s position reliably returned to within 1 µrad of its initial position.
For Comparison: To get a 1 µrad change in the mount’s position, the 100 TPI adjuster on the Ø1" Polaris mounts needs to be rotated by only 0.05° (1/7200 of a turn). A highly skilled operator might be able to make an adjustment as small as 0.3° (1/1200 of a turn), which corresponds to a 6 µrad change in the mount's position.
Conclusions: The Polaris Mirror Mounts are high-quality, ultra-stable mounts that will reliably return a mirror to its original position after cycling through a temperature change. As a result, the Polaris mounts are ideal for use in applications that require long-term alignment stability.
| Ø1/2" Clear-Edge Glue-In Kinematic Mount |
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| Ø1/2" Glue-In Kinematic Mount |
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| Ø19 mm Glue-In Kinematic Mount |
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| Ø1" Clear-Edge Glue-In Kinematic Mount |
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| Ø1" Glue-In Kinematic Mount |
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Optical Distortion Testing Using a ZYGO Phase-Shifting Interferometer
Mounting stresses are responsible for the strain that results in optical surface distortion. Minimizing distortion effects is crucial; any distortion of the optic affects the reflected wavefront. Our Ø1" and Ø19 mm glue-in Polaris kinematic mirror mounts feature a cell for gluing an optic to the mount. This mounting feature provides maximum stability while minimizing optic distortion for applications like laser cavity construction.
To determine the amount of optic distortion caused by the adhesive mounting process, a ZYGO Phase-Shifting Interferometer was used to measure the wavefront reflected from both unmounted and mounted mirrors. Based on results of the test, we can conclude that our glue-in Polaris mounts introduce a minimum amount of wavefront distortion.
Procedure:
A broadband dielectric mirror was loosely placed on POLARIS-K05C4 and POLARIS-K1C4 mounts without any adhesive. Measurements of the optic distortion were then recorded using the ZYGO interferometer. An optic was then bonded to the POLARIS-K05C4 Ø1/2" and POLARIS-K1C4 Ø1" mounts, as well as to a POLARIS-K19G4 Ø19 mm mount using UV-curing Norland Optical Adhesive 61 (Item # NOA61, available below). Additional Zygo measurements of the fixed optic were then recorded to determine the amount of distortion induced by the mounting process.
Results:
As shown in the images below, the surface of the mounted optic exhibited very little distortion. In fact, our testing demonstrated a decrease in the RMS wavefront distortion from 0.010 waves to 0.008 waves when the optic was glued to the Ø1" mount. This result indicates that the optic mounting procedure results in virtually no change to the optical surface. Therefore, the POLARIS-K1C4 and POLARIS-K19G4 mounts are ideal for demanding applications that are sensitive to wavefront distortions.
Loose Optic in POLARIS-K05C4
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Optical Surface Distortion of a Loose Mirror Placed on a POLARIS-K05C4 Ø1/2" Mount
Fixed Optic in POLARIS-K05C4
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Optical Surface Distortion of a Mirror Fixed in a
POLARIS-K05C4 Ø1/2" Mount with NOA61 Optical Adhesive
Fixed Optic in POLARIS-K19G4
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Optical Surface Distortion of a Mirror Fixed in a
POLARIS-K19G4 Ø19 mm Mount with NOA61 Optical Adhesive
Loose Optic in POLARIS-K1C4
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Optical Surface Distortion of a Loose Mirror Placed on a POLARIS-K1C4 Ø1" Mount
Fixed Optic in POLARIS-K1C4
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Optical Surface Distortion of a Mirror Fixed in a
POLARIS-K1C4 Ø1" Mount with NOA61 Optical Adhesive
Optic Installation Procedure for a Polaris Glue-In Mirror Mount Using a UV-Curing Adhesive†
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The glue plane is highlighted for each style of glue-in mount above.
Installing an Optic into a Polaris® Glue-In Mirror Mount
Ensure that there is no grease, dirt, or dust on the optic mounting plane or on the optic itself. Polaris mounts are thoroughly cleaned and then sealed inside two vacuum bag layers to ensure the mounts are free of any contaminants when the package is first opened. If the mount has been handled at all prior to installing the optic, remove any particulates with clean, compressed air and/or clean the mount with acetone or methanol. Using a clean stainless steel applicator or a syringe, apply a thin coating of optical adhesive to the entire optic glue plane (see photo to the right) in the area where the back surface of the optic will make contact. We recommend Norland Optical Adhesive 61 (item # NOA61, available below). Then, slide the optic down the two optic rim contact points until the back surface of the optic makes contact with the glue. The adhesive can then be cured with a UV curing LED system.
Optical Adhesives: We recommend Norland Optical Adhesive 61 (item # NOA61, available below) because of its ease of use. A 10-second pre-cure and a 10-minute final cure provides 3000 psi tensile strength, and the adhesive will maintain its performance over a wide temperature range of -150 °C to +125 °C. We also recommend EPO-TEK 301-2FL for operating temperatures up to 250 °C, at the cost of a slightly weaker bond than the NOA61. Other adhesives may be suitable depending on your application; contact Tech Support for assistance in choosing the appropriate one.
Single Plane Glue Bond: In order to minimize wavefront distortion, the adhesive layer should be confined to a single plane and should not contact the side of the optic. Polaris glue-in mounts offer relief cuts in the glue plane, allowing excess adhesive to flow away from the optic rather than onto the edges. The single plane bond prevents pockets or voids in the glue that reduce the bonding area and weaken the bond. Such pockets or voids are also more susceptible to misalignment due to fluctuations in temperature. In addition, allowing the glue to bond only to the back surface of the optic significantly reduces stress on the optic after the glue is cured.
Temperature while Curing: The temperature of the mount during the UV curing process should be controlled. UV ovens that significantly heat the mount should be avoided because the heat will cause thermal expansion of the mount, adhesive, and optic. Upon cooling, some residual stress will then develop in the glue bond and distort the optic.
See the Test Data tab for details on the low optic distortion provided by these mounts.
†The CS2010 UV curing LED system has been replaced by the CS20K2.
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Design Features of the Polaris Glue-In Mounts
Several common factors typically lead to beam misalignment in an optical setup. These include temperature-induced hysteresis of the mirror's position, crosstalk, drift, and backlash. Polaris mirror mounts are designed specifically to minimize these misalignment factors and thus provide extremely stable performance. Hours of extensive research, multiple design efforts using sophisticated design tools, and months of rigorous testing went into choosing the best components to provide an ideal solution for experiments requiring ultra-stable performance from a kinematic mirror mount.
Thermal Hysteresis
The temperature in most labs is not constant due to factors such as air conditioning, the number of people in the room, and the operating states of equipment. Thus, it is necessary that all mounts used in an alignment-sensitive optical setup be designed to minimize any thermally induced alignment effects. Thermal effects can be minimized by choosing materials with a low coefficient of thermal expansion (CTE), like stainless steel. However, even mounts made from a material with a low CTE do not typically return the mirror to its initial position when the initial temperature is restored. All the critical components of the Polaris mirror mounts are heat treated prior to assembly since this process removes internal stresses that can cause a temperature-dependent hysteresis. As a result, the alignment of the optical system will be restored when the temperature of the mirror mount is returned to the initial temperature.
The method by which the mirror is secured in the mount is another important design factor for the Polaris; this Polaris mount relies on an adhesive to fix the optic in place. Permanent mounting with optical adhesive reduces optical surface distortion and provides superior performance for applications that are sensitive to wavefront distortion. In addition, this glue-in optic design minimizes temperature sensitivity and limits temperature-dependent hysteresis.
Crosstalk
Crosstalk is minimized by carefully controlling the dimensional tolerances of the front and back plates of the mount so that the pitch and yaw actuators are orthogonal. In addition, sapphire seats are used at all three contact points. Standard metal-to-metal actuator contact points will wear down over time. The polished sapphire seats of the Polaris mounts, in conjunction with the hardened stainless steel actuator tips, maintain the integrity of the contact surfaces over time.
Drift and Backlash
In order to minimize the positional drift of the mirror mount and backlash, it is necessary to limit the amount of play in the adjuster as well as the amount of lubricant used. When an adjustment is made to the actuator, the lubricant will be squeezed out of some spaces and built up in others. This non-equilibrium distribution of lubricant will slowly relax back into an equilibrium state. However, in doing so, this may cause the position of the front plate of the mount to move. The Polaris mounts use adjusters matched to the body or bushings that exceed all industry standards so very little adjuster lubricant is needed. As a result, alignment of the Polaris mounts is extremely stable even after being adjusted (see the Test Data tab for more information). In addition, these adjusters have a smooth feel that allows the user to make small, repeatable adjustments.
Vacuum Compatible and Low Outgassing
All Polaris mounts sold on this page are designed to be compatible with cleanroom and vacuum chamber applications. They are chemically cleaned using the Carpenter AAA passivation method to remove sulfur, iron, and contaminants from the surface. After passivation, they are assembled in a clean environment and then double vacuum bagged to eliminate contamination when transported into a cleanroom.
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Polaris Mounts are Shipped Inside Two Vacuum Bag Layers
The sapphire contacts are bonded into place using a NASA-approved low outgassing procedure. In addition, DuPont LVP High-Vacuum (Krytox) Grease, an ultra-high vacuum compatible, low outgassing PTFE grease, is applied to the adjusters. These features provide high vacuum compatibility and low outgassing performance. When operating at pressures below 10-5 Torr, we highly recommend using an appropriate bake out procedure prior to installing the mount in order to minimize contamination caused by outgassing. Please note that the 8-32 and M4 cap screws included with the Polaris mounts are not rated for pressures below 10-5 Torr.
Cleanroom-Compatible Packaging
Each vacuum-compatible Polaris mount is packaged within two vacuum bag layers after assembly in a clean environment, as seen in the image to the right. The vacuum-tight fit of the bags stabilizes the mount, limiting translation of the front plate due to shocks during transportation. The tight fit also minimizes rubbing against the bag, preventing the introduction of bag material shavings that would contaminate the clean mount.
In the vacuum-sealing process, moisture-containing air is drawn out of the packaging. This eliminates unwanted reactions on the surface of the mount without the need for desiccant materials. The vacuum bags protect the mount from contamination by air or dust during transport and storage, and the double-vacuum bag configuration allows for a straightforward and effective cleanroom entry procedure. The outer bag can be removed outside of the cleanroom, allowing the contaminant-free inner bag to be placed into a clean container and transferred into the cleanroom while retaining the benefits of vacuum-bag packaging. Inside the cleanroom, the mount can be removed from the inner bag when ready for use.
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When two POLARIS-K1C4 (top) and two POLARIS-K1S4 (bottom) mirror mounts are positioned at the same distance, the clear-edge design of the POLARIS-K1C4 allows more reflections to occur before the beam exits the two-mount system.
Polaris® kinematic mirror mounts are specifically designed to provide excellent performance under thermal changes and vibrations. Below are some usage tips to ensure that the mount provides optimal performance.
To install a lock nut without cross threading, gently place the lock nut against the end of the adjuster. "Unscrew" the nut until the threads of the nut and the adjuster align before threading the nut onto the adjuster. This animation shows the installation of a POLARIS-LN1 lock nut on a POLARIS-K1F1 low distortion mount.
Mounting Options
Due to its relatively low coefficient of thermal expansion, stainless steel was chosen as the material from which to fabricate the front and back plates of the Polaris mounts. When mounting a Polaris to a post, we recommend using components fabricated from the same material, such as our Ø1" Posts for Polaris Mirror Mounts and our POLARIS-CA1 Clamping Arm. By choosing components fabricated from the same material as the mount itself, all expansions and contractions will occur at the same rate. In addition, it is best to use the shortest possible post. Alternatively, the Polaris can be mounted directly onto a flat surface like a breadboard using a 1/4"-20 to 8-32 thread adapter (Item # AE8E25E) or M6 to M4 thread adapter (Item # AE4M6M), resulting in even better performance. Ensure that the mounting surface is highly flat, polished, and free of debris or scratches.
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POLARIS-K1C4 Ø1" Mount with a Mounted Optic and Optional POLARIS-N5 Knobs
Mount Alignment
During alignment, minimized deflection will be achieved if the mount's front plate is kept parallel to the base plate. This ensures even thermal expansion of all the adjustment screws, causing the mounted mirror to translate in the Z direction as opposed to rotating during temperature changes.
Front Plate’s Position
Although the mount is designed to allow adjustments of up to 8°, to achieve the best performance, it is recommended that the front plate be kept as parallel as possible to the back plate. This ensures the highest stability of the adjustments.
Polish and Clean the Points of Contact
We highly recommend that the points of contact between the mount and the post, as well as the post and the table, are clean and free of scratches or defects. For best results, we recommend using a polishing stone to clean the table’s surface and a polishing pad for the top and bottom of the post as well as the bottom of the mount.
Use Polaris-Specific Adjustment Tools
We offer stainless steel knobs for most of our Polaris adjusters, either included with the mount or available separately. For Polaris mounts with side hole adjusters, we recommend using the SA1 Side Hole Adjustment Tool, which features a precision-fit tip designed for the side holes to allow backlash-free adjustment. The stainless steel material is chemically cleaned for use in clean setups. For securing adjuster lock nuts on these Polaris mounts, we recommend using the TW6 or TW13 torque wrenches below, which are designed to ensure proper torque is applied to the lock nuts for long-term locking. These wrenches are chemically cleaned and compatible with cleanroom and vacuum chamber applications.
Not Recommended
We do not recommend taking the adjusters out of the body, as it can introduce contamination to the threading, which can consequently reduce the fine adjustment performance significantly. Also, do not pull the front plate away as it might stretch the springs beyond their operating range or crack the sapphire seats.
Adjuster Lock Nuts
POLARIS-LN1 and POLARIS-LN05 lock nuts for the Polaris mounts on this page are available separately below. The beam can be held on target with the adjuster thumbscrew or hex key while lightly tightening the lock nut by hand or with a thin-head wrench or cone wrench. For applications that require frequent tuning of the adjusters, the lock nuts only need to be lightly tightened by hand to a torque of approximately 4 to 8 oz-in (0.03 to 0.06 N·m). If long term stability is required, the torque wrenches below can be used to apply the appropriate amount of torque to each lock nut (see the table below for torque values). To avoid cross threading the lock nut, place it against the adjuster and "unscrew" the lock nut until you feel a slight drop; then thread the lock nut onto the adjuster. Each lock nut is pre-greased with the same ultra-high-vacuum-compatible, low-outgassing PTFE grease as the Polaris mounts and has been tested for adjuster fit.
Low Incidence Angles
The 142° clear edge of the POLARIS-K1C4 mount makes it ideal for applications requiring low angles of incidence. The illustration above shows two Polaris Clear-Edge Mounts with Ø1" mirrors used at a near-normal incidence angle.
Transmissive Clear Aperture
The POLARIS-K05G4, POLARIS-K19G4, and POLARIS-K1G4 have two cutouts in the glue plane. These cutouts increase the clear aperture when using transmissive optics, such as filter or beamsplitters.
| Posted Comments: | |
seungeun_oh
(posted 2017-09-29 03:36:18.267) Will the 1 inch mirror mount accept 25 mm mirror? nbayconich
(posted 2017-10-05 10:59:48.0) Thank you for contacting Thorlabs. The POLARIS-K1C4 can accept a Ø25mm mirror. The mounting surface is wide enough to accommodate both Ø25mm and Ø25.4mm optics. user
(posted 2016-01-14 15:17:28.88) It might be helpful is that a remover of glue is provided on the web. What remover would you recommend to reuse a polaris? -ken besembeson
(posted 2016-01-14 04:12:58.0) Response from Bweh at Thorlabs USA: Methylene chloride is one solvent that can be used to separate this adhesive. In your local stores, paint strippers containing this chemical can be found. Remember that it is important to use protective goggles and gloves when handling chemicals. Norland Products has further details regarding separating components bonded with their adhesives: https://www.norlandprod.com/techrpts/separating.html |
Thorlabs offers several different general varieties of Polaris mounts, including kinematic side optic retention, SM-threaded, low optic distortion, piezo-actuated, vertical drive, and glue-in optic mounts, a fixed monolithic mirror mount and fixed optic mounts, XY translation mounts, 5-axis kinematic mount, and a kinematic platform mount. Refer to the tables below for our complete line of Polaris mounts, grouped by mount type, optic bore size, and then arranged by optic retention method and adjuster type (or intended application in the case of fixed mounts). We also offer a line of accessories that have been specifically designed for use with our Polaris mounts; these are listed in the table to the lower right. Note that the tables below list Item # suffixes that omit the "POLARIS" prefix for brevity. Click the photos below for details.
| Polaris Mount Optic Retention Methods | |||
|---|---|---|---|
| Side Lock | SM Threaded | Low Distortion | Glue-In |
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 |
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| Polaris Mount Adjuster Types | |||||
|---|---|---|---|---|---|
| Side Hole | Hex | Adjuster Knobs | Adjuster Lock Nuts |
Piezo Adjusters | Vertical-Drive Adjusters |
 |
 |
 |
 |
 |
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| Polaris Kinematic Mounts for Round Optics | ||||
|---|---|---|---|---|
| Optic Retention Method | Side Lock | SM Threaded | Low Distortion | Glue-In |
| Ø1/2" Optics | ||||
| 2 Side Hole Adjusters | - | - | - | -K05C4 -K05G4 |
| 2 Hex Adjusters | -K05S1 | -K05T1 | -K05F1 | - |
| 2 Adjusters with Lock Nuts | -K05S2 | -K05T2 | -K05F2 | - |
| 2 Piezoelectric Adjusters | -K05P2 | - | - | - |
| 2 Vertical Adjusters | -K05VS2 -K05VS2L |
- | - | - |
| 3 Hex Adjusters | -K05 | - | - | - |
| 3 Adjusters with Lock Nuts | - | -K05T6 | -K05F6 | - |
| 3 Adjuster Knobs (Tip/Tilt/Z) & 2 Hex Adjusters (X/Y) |
- | -K05XY | - | - |
| Ø19 mm (3/4") Optics | ||||
| 2 Side Hole Adjusters | -K19S4 | - | -K19F4/M | -K19G4 |
| Ø25 mm Optics | ||||
| 2 Side Hole Adjusters | -K25S4/M | - | -K25F4/M | - |
| Ø1" Optics | ||||
| 2 Side Hole Adjusters | -K1S4 | - | - | -K1C4 -K1G4 |
| 2 Hex Adjusters | -K1E2 -K1-2AH |
-K1T2 | -K1F2 | - |
| 2 Adjuster Knobs | - | -K1T1 | -K1F1 | - |
| 2 Piezoelectric Adjusters | -K1S2P | - | - | - |
| 2 Vertical Adjusters | -K1VS2 -K1VS2L |
- | - | - |
| 3 Side Hole Adjuster | -K1S5 | - | - | - |
| 3 Hex Adjusters | -K1E3 -K1-H |
-K1T3 | - | - |
| 3 Adjuster Knobs | -K1E -K1 |
-K1T | -K1F | - |
| 3 Piezoelectric Adjusters | -K1S3P | - | - | - |
| 3 Adjuster Knobs (Tip/Tilt/Z) & 2 Hex Adjusters (X/Y) |
- | -K1XY | - | - |
| Optic Retention Method | Side Lock | SM Threaded | Low Distortion | Glue-In |
| Ø1.5" Optics | ||||
| 2 Side Hole Adjusters | -K15S4 | - | -K15F4 | - |
| 2 Vertical Adjusters | -K15VS2 -K15VS2L |
- | - | - |
| 3 Adjuster Knobs (Tip/Tilt/Z) & 2 Hex Adjusters (X/Y) |
- | -K15XY | - | - |
| Ø50 mm Optics | ||||
| 2 Side Hole Adjusters | -K50S4/M | - | -K50F4/M | - |
| Ø2" Optics | ||||
| 2 Hex Adjusters | -K2S2 | -K2T2 | -K2F2 | - |
| 2 Adjuster Knobs | -K2S1 | -K2T1 | -K2F1 | - |
| 2 Piezoelectric Adjusters | -K2S2P | - | - | - |
| 2 Vertical Adjusters | -K2VS2 -K2VS2L |
- | - | - |
| 3 Hex Adjusters | -K2S3 | -K2T3 | -K2F3 | - |
| 3 Adjuster Knobs | -K2 | -K2T | -K2F | - |
| Ø3" Optics | ||||
| 2 Side Hole Adjusters | -K3S4 | - | - | - |
| 3 Side Hole Adjusters | -K3S5 | - | - | - |
| Ø4" Optics | ||||
| 2 Side Hole Adjusters | - | - | -K4F4 | - |
| Ø6" Optics | ||||
| 2 Side Hole Adjusters | - | - | -K6F4 | - |
| Polaris XY Translation Mounts for Round Optics | ||
|---|---|---|
| Optic Retention Method | SM Threaded | Representative Photos |
| Ø1/2" Optics |   |
|
| 2 Hex Adjusters (X/Y) | -05CXY | |
| -05XY | ||
| 3 Adjuster Knobs (Tip/Tilt/Z) & 2 Hex Adjusters (X/Y) |
-K05XY | |
| Ø1" Optics | ||
| 2 Hex Adjusters (X/Y) | -1XY | |
| 3 Adjuster Knobs (Tip/Tilt/Z) & 2 Hex Adjusters (X/Y) |
-K1XY | |
| Ø1.5" Optics | ||
| 2 Hex Adjusters (X/Y) & 3 Adjuster Knobs (Tip/Tilt/Z)zzz |
-K15XY | |
| Polaris Fixed Mounts for Round Optics | ||||||
|---|---|---|---|---|---|---|
| Optic Retention Method | Side Lock | Low Distortion |
Glue-In | Representative Photos |
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| Ø1/2" Optics |     |
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| Optimized for Mirrors | - | -B05F | -C05G | |||
| Optimized for Beamsplitters | -B05S | - | -B05G | |||
| Optimized for Lenses | - | - | -L05G | |||
| Ø19 mm (Ø3/4") Optics | ||||||
| Optimized for Mirrors | -19S50/M | - | - | |||
| Ø1" Optics | ||||||
| Optimized for Mirrors | - | -B1F | -C1G | |||
| Optimized for Beamsplitters | -B1S | - | -B1G | |||
| Optimized for Lenses | - | - | -L1G | |||
| Ø2" Optics | ||||||
| Optimized for Mirrors | - | -B2F | -C2G | |||
| Optimized for Beamsplitters | -B2S | - | - | |||
| Polaris Kinematic 1.8" x 1.8" Platform Mount | ||
|---|---|---|
| Optomech Retention Method | Tapped Holes & Counterbores |
 |
| 2 Adjuster Knobs | -K1M4(/M) | |
| Accessories for Polaris Mounts | |
|---|---|
| Description | Representative Photos |
| Ø1/2" Posts for Polaris Mounts |  |
| Ø1" Posts for Polaris Mounts | |
| Non-Bridging Clamping Arms |  |
| 45° Mounting Adapter |  |
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A 145° clear edge allows a pair of mirrors to be mounted in close proximity at low angles of incidence without clipping the beam path (see the Usage Tips tab).
- 145° Clear Edge for Low Angles of Incidence
- Glue-In Optic Cell for Ø1/2" Optics Minimizes Wavefront Distortion
- 2-Adjuster Hex-Driven Design with 130 TPI Matched Actuator/Body Pairs
- Easily Accessible Ø0.07" Adjuster Side Through Holes for Fine Adjustment
- ±4° Mechanical Angular Range with ~11 mrad/rev Resolution
- Less than 1 µrad Deviation after 12.5 °C Temperature Cycling (See Test Data Tab)
The POLARIS-K05C4 Clear-Edge Kinematic Glue-In Mirror Mount features a 145° clear edge and an optic cell that allows optics to be glued in place. The clear-edge design allows for low incidence angles, making these mounts ideal for space-constrained systems. The adhesive optic mounting method ensures minimal optic surface distortion, providing optimum performance for applications like laser cavity construction. We recommend Norland Optical Adhesive 61 (Item # NOA61, available below) for gluing optics to this mount.
The 2-adjuster design of this mount improves stability by limiting the available degrees of freedom for movement. The 130 TPI adjusters feature two Ø0.07" through holes that allow for actuation from the side using our precision-fit SA1 Side Hole Adjustment Tool (sold below) or a 1/16" (1.5 mm) balldriver or hex key. Each adjuster also has a 2.0 mm (5/64") hex and may be adjusted with the hex on the end of the SA1, our HKTS-5/64 Hex Key Thumbscrews (sold below), or any other 2.0 mm (5/64") hex wrench. The adjusters on this mount can be locked using the POLARIS-LN05 lock nut (sold separately below). For applications that require frequent tuning of the adjusters, the lock nut only needs to be lightly tightened to a torque of approximately 4 to 8 oz-in (0.03 to 0.06 N·m). For long term stability, we recommend tightening to a torque of 24 oz-in, which can be achieved by using our TW6 preset torque wrench (sold below).
The mount features two #8 (M4) counterbores for post mounting. If mounting a transmissive optic, be sure to use a low-profile cap screw (one 8-32 and one M4 are included). Note that the 8-32 cap screw reduces the clear aperture to 0.39" (9.9 mm) and the M4 cap screw reduces it to 0.34" (8.6 mm). For custom mounting configurations, two Ø2 mm alignment pin holes are located on each mounting face for setting a precise location and mounting angle. We recommend using this mount with a stainless steel post that also has Ø2 mm alignment pin holes, such as our Ø1/2" or Ø1" Posts for Polaris Mirror Mounts. Standard DIN 7-m6 ground dowel pins are recommended (click on the red documents icon below and download the .pdf or .dxf drawing for details).
For applications that require materials with a lower coefficient of thermal expansion, we can provide mounts with face plates made from chemically-cleaned and heat-treated 416 stainless steel. In addition, we can replace the face plates of existing mounts or provide replacement face plates to be installed by the user. Please contact Tech Support for more information.
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Two cutouts in the glue plane increase the clear aperture when transmissive optics are used.
- Glue-In Optic Cell for Ø1/2" Optics Minimizes Wavefront Distortion
- 2-Adjuster Hex-Driven Design with 130 TPI Matched Actuator/Body Pairs
- Easily Accessible Ø0.07" Adjuster Side Through Holes for Fine Adjustments
- ±4° Mechanical Angular Range with ~11 mrad/rev Resolution
- Less than 1 µrad Deviation after 12.5 °C Temperature Cycling (See Test Data Tab)
The POLARIS-K05G4 Ø1/2" Kinematic Glue-In Mirror Mount is designed to provide long-term alignment stability and easy high-resolution adjustments via two 130 TPI adjusters. The mount features a compact footprint, ideal for OEM applications, and a glue-in optic cell to ensure minimal optic surface distortion, providing optimum performance for applications like laser cavity construction. In addition, this mount has two cutouts in the glue channel to increase the clear aperture of the mount when using transmissive optics, such as filters or beamsplitters; these cutouts are shown in the photo to the right. We recommend Norland Optical Adhesive 61 (Item # NOA61, available below) for gluing optics to this mount.
The 2-adjuster design of this mount improves stability by limiting the available degrees of freedom for movement. The 130 TPI adjusters feature three Ø0.07" through holes that allow for actuation from the side using our precision-fit SA1 Side Hole Adjustment Tool (sold below) or a 1/16" (1.5 mm) balldriver or hex key. Each adjuster also has a 2.0 mm (5/64") hex and may be adjusted with the hex on the end of the SA1, our HKTS-5/64 Hex Key Thumbscrews (sold below), or any other 2.0 mm (5/64") hex wrench. The adjusters on this mount can be locked using the POLARIS-LN05 lock nut (sold separately below). For applications that require frequent tuning of the adjusters, the lock nut only needs to be lightly tightened to a torque of approximately 4 to 8 oz-in (0.03 to 0.06 N·m). For long term stability, we recommend tightening to a torque of 24 oz-in, which can be achieved by using our TW6 preset torque wrench (sold below).
The mount features two #8 (M4) counterbores for post mounting. For custom mounting configurations, two Ø2 mm alignment pin holes are located on each mounting face for setting a precise location and mounting angle. We recommend using this mount with a stainless steel post that also has Ø2 mm alignment pin holes, such as our Ø1/2" or Ø1" Posts for Polaris Mirror Mounts. Standard DIN 7-m6 ground dowel pins are recommended (click on the red Documents Icon below and download the .pdf or .dxf drawing for details). Due to the shallow design of the counterbores, low-profile 8-32 and M4 cap screws are included for mounting. Note that the 8-32 cap screw reduces the clear aperture to 0.39" (9.9 mm) and the M4 cap screws reduces it to 0.34" (8.6 mm). The 8-32 cap screw accepts a 5/64" (2 mm) hex wrench, while the M4 cap screw accepts a 2.5 mm hex wrench.
For applications that require materials with a lower coefficient of thermal expansion, we can provide mounts with face plates made from chemically-cleaned and heat-treated 416 stainless steel or with a clear-edge mounting cell similar to our Ø1" clear-edge mount below. We can also replace the face plates of existing mounts or provide replacement face plates to be installed by the user. Please contact Tech Support for more information.
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A POLARIS-K19G4 mounted using a Ø1" Post for Polaris Mirror Mounts and a Non-Bridging Clamping Arm.
- Glue-In Optic Cell for Ø19 mm Optics Minimizes Wavefront Distortion
- 2-Adjuster Hex-Driven Design with 130 TPI Matched Actuator/Body Pairs
- Easily Accessible Ø0.07" Adjuster Side Through Holes for Fine Adjustments
- ±4° Mechanical Angular Range with ~7.0 mrad/rev Resolution
- Less than 1 µrad Deviation after 12.5 °C Temperature Cycling (See Test Data Tab)
The POLARIS-K19G4 Ø19 mm Kinematic Glue-In Mirror Mount is designed to provide long-term alignment stability and easy high-resolution adjustments via two 130 TPI adjusters. The mount features a compact footprint, ideal for OEM applications, and a glue-in optic cell to ensure minimal optic surface distortion, providing optimum performance for applications like laser cavity construction. In addition, this mount has two cutouts in the glue channel to increase the clear aperture of the mount when using transmissive optics, such as filters or beamsplitters. We recommend Norland Optical Adhesive 61 (Item # NOA61, available below) for gluing optics to this mount.
The 130 TPI adjusters feature three Ø0.07" through holes that allow for actuation from the side using our precision-fit SA1 Side Hole Adjustment Tool (sold below) or a 1/16" (1.5 mm) balldriver or hex key. Each adjuster also has a 2.0 mm (5/64") hex and may be adjusted with the hex on the end of the SA1, our HKTS-5/64 Hex Key Thumbscrews (sold below), or any other 2.0 mm (5/64") hex wrench. The adjusters on this mount can be locked using the POLARIS-LN05 lock nut (sold separately below). For applications that require frequent tuning of the adjusters, the lock nut only needs to be lightly tightened to a torque of approximately 4 to 8 oz-in (0.03 to 0.06 N·m). For long term stability, we recommend tightening to a torque of 24 oz-in, which can be achieved by using our TW6 preset torque wrench (sold below).
The mount features two #8 (M4) counterbores for post mounting. For custom mounting configurations, two Ø2 mm alignment pin holes are located on each mounting face for setting a precise location and mounting angle. We recommend using this mount with a stainless steel post that also has Ø2 mm alignment pin holes, such as our Ø1/2" or Ø1" Posts for Polaris Mirror Mounts, shown to the above right. Standard DIN 7-m6 ground dowel pins are recommended (click on the red Documents Icon below and download the .pdf or .dxf drawing for details).
For applications that require materials with a lower coefficient of thermal expansion, we can provide mounts with face plates made from chemically-cleaned and heat-treated 416 stainless steel or with a clear-edge mounting cell similar to our Ø1" clear-edge mount below. We can also replace the face plates of existing mounts or provide replacement face plates to be installed by the user. Please contact Tech Support for more information.
| Ø19 mm Mirrors |
|---|
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For a two-mirror system designed to provide a single reflection off of each mirror surface, two POLARIS-K1C4 mounts (top) can be positioned in closer proximity than two POLARIS-K1S4 mounts (bottom) while still allowing the beam to enter and exit without clipping.
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142° Clear Edge Allows for Low Angles of Incidence
- 142° Clear Edge for Low Angles of Incidence
- Glue-In Optic Cell for Ø1" Optics Minimizes Wavefront Distortion
- 2-Adjuster Hex-Driven Design with 100 TPI Matched Actuator/Body Pairs
- Easily Accessible Ø0.07" Adjuster Side Through Holes for Fine Adjustments
- ±4° Mechanical Angular Range with ~7.7 mrad/rev Resolution
- Less than 1 µrad Deviation after 12.5 °C Temperature Cycling
(See Test Data Tab) - POLARIS-N5 Removable Knob Sold Separately
The 2-adjuster POLARIS-K1C4 Clear-Edge Kinematic Glue-In Mirror Mount features a 142° clear edge and an optic cell that allows optics to be glued in place. The clear-edge design allows for low incidence angles, making these mounts ideal for space-constrained systems. The adhesive optic mounting method ensures minimal optic surface distortion, providing optimum performance for applications like laser cavity construction. We recommend Norland Optical Adhesive 61 (Item # NOA61, available below) for gluing optics to this mount.
The 2-adjuster design of this mount improves stability by limiting the available degrees of freedom for movement. The 100 TPI adjusters feature three Ø0.07" through holes that allow for actuation from the side using our precision-fit SA1 Side Hole Adjustment Tool (sold below) or a 1/16" (1.5 mm) balldriver or hex key. Each adjuster also has a 2.0 mm (5/64") hex and may be adjusted with the hex on the end of the SA1, our HKTS-5/64 Hex Key Thumbscrews (sold below), or any other 2.0 mm (5/64") hex wrench. Alternatively, POLARIS-N5 removable, low-profile adjustment knobs (sold below) can be threaded onto the adjusters for improved feel in fine-resolution adjustments; note that the removable knobs will block the adjuster side holes but not the hex. The adjusters on this mount can be locked using the POLARIS-LN1 lock nuts (sold separately below). For applications that require frequent tuning of the adjusters, the lock nuts only need to be lightly tightened to a torque of approximately 4 to 8 oz-in (0.03 to 0.06 N·m). For long term stability, we recommend tightening to a torque of 32 oz-in, which can be achieved by using our TW13 preset torque wrench (sold below).
The mount features two #8 (M4) counterbores for post mounting. For custom mounting configurations, two Ø2 mm alignment pin holes are located on each mounting face for setting a precise location and mounting angle. We recommend using this mount with a stainless steel post that also has Ø2 mm alignment pin holes, such as our Ø1/2" or Ø1" Posts for Polaris Mirror Mounts. Standard DIN 7-m6 ground dowel pins are recommended (click on the red documents icon below and download the .pdf or .dxf drawing for details).
For applications that require materials with a lower coefficient of thermal expansion, we can provide mounts with face plates made from chemically-cleaned and heat-treated 416 stainless steel. In addition, we can replace the face plates of existing mounts or provide replacement face plates to be installed by the user. Please contact Tech Support for more information.
To order compatible knobs, please contact Tech Support.
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Methods of Adjusting a Glue-In Mirror Mount:
(A) 5/64" or 2.0 mm Hex Key in End of the Adjuster,
(B) SA1 Tool Through Side Holes,
(C) POLARIS-N5 Removable 1/4"-100 Adjuster Knobs, and (D) HKTS-5/64 Knobs and 1/16" or 1.5 mm Balldriver Through Side Holes for Fine Adjustment
- Glue-In Optic Cell for Ø1" Optics Minimizes Wavefront Distortion
- 2-Adjuster Hex-Driven Design with 100 TPI Matched Actuator/Body Pairs
- Easily Accessible Ø0.07" Adjuster Side Through Holes for Fine Adjustments
- ±4° Mechanical Angular Range with ~7.7 mrad/rev Resolution
- Less than 1 µrad Deviation after 12.5 °C Temperature Cycling (See Test Data Tab)
The POLARIS-K1G4 Ø1" Kinematic Glue-In Mirror Mount is designed to provide long-term alignment stability and easy high-resolution adjustments via two 100 TPI adjusters. The mount features a glue-in optic cell to ensure minimal optic surface distortion, providing optimum performance for applications like laser cavity construction. In addition, this mount has two cutouts in the glue plane to increase the clear aperture of the mount when using transmissive optics, such as filters or beamsplitters. We recommend Norland Optical Adhesive 61 (Item # NOA61, available below) for gluing optics to this mount.
The 2-adjuster design of this mount improves stability by limiting the available degrees of freedom for movement. The 100 TPI adjusters feature three Ø0.07" through holes that allow for actuation from the side using our precision-fit SA1 Side Hole Adjustment Tool (sold below) or a 1/16" (1.5 mm) balldriver or hex key. Each adjuster also has a 2.0 mm (5/64") hex and may be adjusted with the hex on the end of the SA1, our HKTS-5/64 Hex Key Thumbscrews (sold below), or any other 2.0 mm (5/64") hex wrench. Alternatively, POLARIS-N5 removable, low-profile adjustment knobs (sold below) can be threaded onto the adjusters for improved feel in fine-resolution adjustments; note that the removable knobs will block the adjuster side holes but not the hex. The adjusters on this mount can be locked using the POLARIS-LN1 lock nut or POLARIS-LNS1 locking collar (sold separately below). For applications that require frequent tuning of the adjusters, the lock nut or locking collar only needs to be lightly tightened to a torque of approximately 4 to 8 oz-in (0.03 to 0.06 N·m). For long term stability, we recommend tightening to a torque of 32 oz-in, which can be achieved by using our TW13 preset torque wrench (sold below).
The mount features two #8 (M4) counterbores for post mounting. For custom mounting configurations, two Ø2 mm alignment pin holes are located on each mounting face for setting a precise location and mounting angle. We recommend using this mount with a stainless steel post that also has Ø2 mm alignment pin holes, such as our Ø1/2" or Ø1" Posts for Polaris Mirror Mounts, shown to the above right. Standard DIN 7-m6 ground dowel pins are recommended (click on the red Documents Icon below and download the .pdf or .dxf drawing for details).
For applications that require materials with a lower coefficient of thermal expansion, we can provide mounts with face plates made from chemically-cleaned and heat-treated 416 stainless steel or with a clear-edge mounting cell similar to our Ø1" clear-edge mount above. We can also replace the face plates of existing mounts or provide replacement face plates to be installed by the user. Please contact Tech Support for more information.
ZoomPolaris Recommended Optical Adhesive
NOA61 is recommended for use with our Polaris mounts because of its excellent glass-metal adhesion and low-stress mounting. However, other UV-curing adhesives are available that provide faster curing times or greater flexibility for environments with large temperature fluctuations. Please see our complete presentation for details.
- Low Shrinkage (1.5%) and Low Stress
- Strong Glass-Metal Bond is Ideal for Use with Optics
- Recommended UV Curing Intensity >2 mW/cm2 @ 365 nm
The NOA61 Optical Adhesive is a clear, one-part adhesive that contains no solvents. When exposed to UV light, it gels in seconds and cures fully in minutes to give a tough resilient bond. It has been optimized to adhere optical glass to metal with very little stress, making it ideal for use with our Polaris Glue-In Mounts. To cure these optical adhesives, they must be exposed to UV light. Thorlabs offers a UV curing system that provides an intensity up to 600 mW/cm2.
NOA61 optical adhesive is designed to give the best possible bond to glass surfaces and may be polished after curing. It meets Federal Specification MIL-A-3920 for optical adhesives and is approved for use on all government contracts specifying such adhesives. This adhesive has excellent adhesion to metal, fiberglass and glass-filled plastic.
Shelf Life
These UV-curing adhesives have a shelf life of approximately 8 months. This time frame begins on the date the epoxy was packaged at the manufacturer. Upon receipt by the end user, Thorlabs guarantees that the remaining shelf life will be at least 3 months.
| Item # | Adhesion | Viscosity @ 25 °C | na | Tensile Strength | Shore D Hardness |
Net Weightb | ||
|---|---|---|---|---|---|---|---|---|
| Glass | Metal | Plastic | ||||||
| NOA61 | Excellent | Excellent | Fair | 300 CPS | 1.56 | 3000 psi | 85 | 1 ± 0.07 oz (28 ± 2 g) |
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POLARIS-K1C4 Mount with Optic and Optional POLARIS-N5 Removable Knobs
| Compatible Mounts |
|---|
| POLARIS-K25S4/M POLARIS-K25F4/M POLARIS-K1C4 POLARIS-K1G4 POLARIS-K1S4 POLARIS-K1S5 POLARIS-K15S4 POLARIS-K15F4 POLARIS-K50S4/M POLARIS-K50F4/M POLARIS-K2VS2 POLARIS-K2VS2L |
- For Convenient Adjustment of 1/4"-100 Adjusters
- Attaches Directly to Adjuster Threading
- Sold Individually
The Polaris® Removable Knobs for 1/4"-100 Adjusters allows the user to adjust a Polaris kinematic mirror mount by hand. The knobs can be used with select Polaris mounts, listed in the table to the right. Note that when the knobs are used with any of these mounts, they will block the side through holes on the adjuster. The adjuster screw's 5/64" (2 mm) hex socket is still usable when the knobs are attached.
The knobs are made from chemically cleaned and heat-treated 303 stainless steel that provides vacuum compatibility down to 10-9 Torr at 25 °C with proper bake out (10-5 Torr at 25 °C without bake out).
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- For Convenient Adjustment of 5/64" and 2 mm Hex-Driven Actuators
- Red Anodized Adjustment Knob with Engraved Hex Size
- Replaceable Hex Tip
- Sold in Packages of 4
These 5/64" Hex Key Adjuster Thumbscrews allow for quick adjustment of many 5/64" and 2 mm hex-driven actuators (or standard actuators with the knobs removed). These temporary knobs can be left in the screw's hex socket between adjustments for convenience (see photo to the right). An 8-32 setscrew (5/64" hex) secures the replaceable hex bit, which can be reversed if the tip is stripped. Contact Tech Support to order replacement hex key bits.
We offer hex key thumbscrews in sizes from 0.050" to 3/16" and 2 mm to 5 mm.
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The SA1 tool can be used to adjust a POLARIS-K1S4 mount using the side holes (left) or rear hex (right).
- Ø0.07" Precision-Fit Tip for Side Holes on Polaris Adjusters
- 5/64" (2.0 mm) Hex on Handle
- Magnetic, Chemically Cleaned Stainless Steel
The Side Hole Adjustment Tool features a Ø0.07" precision-fit tip designed for Polaris mounts with side hole adjusters. The handle features a 5/64" (2.0 mm) hex allowing the SA1 to act as a small knob, and the central nut is compatible with a 6.0 mm wrench allowing for a longer lever arm. The precision-fit tip minimizes backlash during adjustments and the depth stop allows the tool to rest securely in a side hole between adjustments. On Ø25 mm mirror mounts and larger, the 1.62" length allows the tool to adjust the actuator 360° without interfering with the other adjuster on the back of the mount.
The SA1 is made of chemically cleaned, hardened, super alloy stainless steel for durability and compatibility with clean environments. The tool is also magnetic allowing it to be easily retrieved from tight or sensitive setups using a magnet.
ZoomTo install a lock nut without cross threading, gently place the lock nut against the end of the adjuster. "Unscrew" the nut until the threads of the nut and the adjuster align before threading the nut onto the adjuster. This animation shows the installation of a POLARIS-LN1 lock nut on a POLARIS-K1F1 low distortion mount.
Click for Details
POLARIS-LN05 Lock Nuts on a POLARIS-K19S4 Mount
- Provide Long-Term Adjuster Stability
- Compatible with Select Polaris Mounts
- POLARIS-LN05 Lock Nut has 3/16"-130 Internal Threading
- POLARIS-LN1 Lock Nut has 1/4"-100 Internal Threading
These lock nuts are designed for use with Polaris kinematic mounts that do not use low-profile adjusters. The POLARIS-LN05 lock nut can be used with 3/16"-130 adjusters, while the POLARIS-LN1 lock nut is for 1/4"-100 adjusters. Designed for long-term adjuster stability or applications that are exposed to shock and vibration, these lock nuts are pre-greased with the same ultra-high-vacuum-compatible, low-outgassing PTFE grease as the Polaris mounts and have been tested for adjuster fit.
For applications that require frequent tuning of the adjusters, the lock nuts only need to be lightly tightened by hand to a torque of approximately 4 to 8 oz-in (0.03 to 0.06 N·m). If long-term stability is required, the torque wrenches below can be used to apply the appropriate amount of torque to each lock nut (see the table below for torque values). POLARIS-LN05 lock nuts require a 6 mm hex tool for tightening, while POLARIS-LN1 lock nuts require a 13 mm hex tool. To avoid cross threading the lock nut, place it against the adjuster and "unscrew" the lock nut until you feel a slight drop; then thread the lock nut onto the adjuster.
Zoom- Provides Long-Term Adjuster Stability
- Compatible with Select Polaris Mounts
- Low Profile: Ø0.33" (Ø8.4 mm) x 0.08" (1.9 mm) Thick
- Tighten Along Rotational Axis Using the POLARIS-T2 Spanner Wrench
This locking collar is compatible with Polaris mounts that have 1/4"-100 adjusters, excluding the piezo-driven mounts and mounts with low-profile adjusters (Item #s POLARIS-K1E3 and POLARIS-K1E2). Designed for long-term adjuster stability or applications that are exposed to shock and vibration, these locking collars are pre-greased with the same ultra-high-vacuum-compatible, low-outgassing PTFE grease as the Polaris mounts and have been tested for adjuster fit.
The POLARIS-T2 spanner wrench has been specifically designed for use in securing the POLARIS-LNS1 locking collar. The double spanner head enables complete engagement while the design allows locking collar adjustments to be along the same line as the adjuster itself. A center through hole allows a 2 mm ball driver to pass through the spanner wrench, so that the adjuster can be held in position while the locking collar is engaged.
For applications that require frequent tuning of the adjusters, the locking collar only needs to be lightly tightened to a torque of approximately 4 to 8 oz-in (0.03 to 0.06 N·m). For long-term stability, we recommend tightening to a torque of 32 oz-in, which can be achieved by using our TW13 preset torque wrench (sold below) in combination with the POLARIS-T2 spanner wrench. To avoid cross threading the locking collar, place it against the adjuster and "unscrew" the collar until you feel a slight drop; then thread the collar onto the adjuster.
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Each wrench is engraved with its preset torque value and Item #.
Click for Details
TW6 Torque Wrench Used to Secure POLARIS-LN05 Lock Nut on POLARIS-K05T2 Mirror Mount
- Preset Wrenches for Polaris Lock Nuts & Spanner Wrenches (See Table Below for Compatibility):
- TW6: 6 mm Hex, 24 oz-in
- TW13: 13 mm Hex, 32 oz-in
- Break-Over Design Ensures Proper Torque is Applied
- Ideal for Applications Requiring Long-Term Locking
These torque wrenches have a preset torque value to secure the lock nuts on Polaris mounts for long-term locking; see the table below for specifications. When the preset torque value has been achieved, the break-over design will cause the pivoting joint to "break," as shown to the lower right. The wrench's hex head will move back into place once the force is removed. This design prevents further force from being applied to the lock nut. Engraved guidelines indicate the angle the wrench should pivot in order to apply the specified torque; pivoting the handle past these guidelines will over-torque the lock nut. Each wrench is also engraved with its preset torque value, torque direction, wrench size, and Item # for easy identification in the field.
These wrenches are designed to be compatible with cleanroom and vacuum chamber applications. They are chemically cleaned using the Carpenter AAA passivation method to remove sulfur, iron, and contaminants from the surface. After passivation, they are assembled in a clean environment and double vacuum bagged to eliminate contamination when transported into a cleanroom. Every wrench has a bead-blasted finish to minimize reflections when working with setups that include lasers.
Please note that these wrenches are not intended for use in applications where adjusters are frequently tuned, as these applications typically require torque values of 4 to 8 oz-in (0.03 to 0.06 N·m).
| Item # | Hex | Torque | Torque Accuracy | Compatible Items |
|---|---|---|---|---|
| TW6 | 6 mm | 24 oz-in (0.17 N•m) | ±1.44 oz-in (0.010 N•m) | POLARIS-LN05 3/16"-130 Lock Nut |
| TW13 | 13 mm | 32 oz-in (0.23 N•m) | ±1.92 oz-in (0.014 N•m) | POLARIS-LN1 1/4"-100 Lock Nut POLARIS-LN4 3/8"-100 Lock Nut POLARIS-T2 Spanner Wrench for POLARIS-LNS1 Locking Collar POLARIS-T3 Spanner Wrench for POLARIS-LNS05 Locking Collar |
Glue-InPolaris Mirror Mounts
