Kinematic Mirror Mounts with Vertical Drives


  • Two-Adjuster Mounts with Vertical Drives that Keep Beam Path Clear
  • Options for Ø1/2", Ø1", and Ø2" Mirrors
  • Ideal for Use with High-Power Lasers

VM1

For Ø1" Mirrors

VM05

For Ø1/2" Mirrors

POLARIS-K1VS2

For Ø1" Mirrors,
Right-Handed
(Left-Handed Version Available)

POLARIS-K2VS2

For Ø2" Mirrors,
Right-Handed
(Left-Handed Version Available)

Related Items


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Features

  • Kinematic Mirror Mounts with Two Vertical-Drive Adjusters
  • For Ø1/2", Ø1", or Ø2" Mirrors
  • Compact Designs and Vertical Drives are Ideal for Tight Lab Set-Ups
  • Polaris® Mirror Mounts with Vertical-Drive Adjusters are Designed for Exceptional Thermal and Long-Term Stability

Kinematic Mirror Mounts with Vertical Drives
Thorlabs offers kinematic mirror mounts with vertical drives for either Ø1/2", Ø1", or Ø2" optics. The adjusters for these mounts are located above the optical path, allowing for safe adjustment of the system without needing to place your hands near the incoming beam. The position of the actuators also makes these mounts ideal for compact setups. The VM05(/M) and VM1(/M) mounts feature an angular adjustment range of ±3°, and are fabricated from black anodized aluminum. The thick main body design increases rigidity to prevent flexing during adjustment.

Polaris Kinematic Mirror Mount with Two Vertical-Drive Adjusters
The POLARIS-K1VS2(L) and POLARIS-K2VS2(L) mirror mounts feature a patented (US Patent 10,101,559) optic bore design with a monolithic flexure arm. This design provides high holding force and pointing stability with minimal optic distortion. Polaris optic bores are precision machined to achieve a fit that will provide optimum beam pointing stability over changing environmental conditions such as temperature changes, transportation shock, and vibration. Machined from heat-treated stainless steel, Polaris mounts utilize precision-matched adjusters with ball contacts and sapphire seats to provide smooth kinematic adjustment, and are designed to be compatible with clearnroom and vacuum applications. Please see the full web presentation for details.


Posted Comments:
melanie  (posted 2018-11-14 11:32:54.99)
Are the adjustments lockable ? There is a screw in the middle of the end of the micrometer head, which might be for locking the adjustment. Is that what this screw is for ? It looks like the exact same micrometer used with the gimbal mounts, which IS advertised as lockable.
YLohia  (posted 2018-11-14 11:10:33.0)
Hello, thank you for contacting Thorlabs. Unfortunately, these mounts are not lockable. The GMB1 gimbal mount is lockable with the side located locking thumbscrews. The actual adjuster knob is not intrinsically lockable. The GM100, which is the gimbal equivalent of the VM1, is not lockable and is not advertised as such. The hex on the top of the adjustment knob is often mistaken for a locking mechanism, but it is there for convenience so a ball driver can be used for adjustment.
ivangr  (posted 2018-08-02 16:17:46.013)
Hello, I am contacting you concerning the VM1/M mount. I was wondering whether it would be possible to have additional graduations on the actuators (similarly to standard micrometer screws) to keep track of how many rotations of the actuators have been done, in order to have a better 'absolute calibration' of the angle. My application is the following: I need to align a nonlinear crystal to a reference position, and then detune it by a certain angle. The VM1 gives me a very good angular accuracy, however as soon as I need to detune by more than one rotation of the actuator, I need to pay extra attention and keep track of how many rotations I did in order to know the detuning angle. This easily gets unpractical, especially since I need to detune over a wide range of angles. Best regards, Ivan
llamb  (posted 2018-08-03 08:57:18.0)
Hello Ivan, thank you for contacting Thorlabs. We use the component with the engraved witness line in various other products as well, so a large scale modification would not be feasible because of the different graduated scales for each product that uses this component. We may be able to offer a one-off quote for a customized product, where the witness line has perpendicular engravings to keep track of your rotations. I will reach out to you directly to discuss further.
arne.meyeraufderheide  (posted 2017-09-26 15:15:11.237)
Hello Thorlabs, do these top-driven mirror mounts also exist for 2" optics? Due to a lack of space we want to minimize the footprint of our 2" mounts, the usual 2" mirror mounts have the knobs behind the mirror which sometimes collide with other optomechanic in our setup. Best regards
nbayconich  (posted 2017-10-12 12:23:59.0)
Thank you for contacting Thorlabs. We can offer this as a special made item. I will reach out to directly about our custom capabilities.
werner.engel  (posted 2017-02-16 20:04:40.277)
What I did not find at any optics shop is a device as slimm as the VM1, but also capable of the other 2 axis - like the K5X1. The reason for this: Sometimes you need to build a very short cavity - in this case the screws behind the partly reflective mirror are much too long!! The length of the whole device should be as short as possible. Has this been discussed allready? Any plan to develop such a mount? This would make optical cavities much shorter! Waiting for your feedback, Werner
tfrisch  (posted 2017-02-20 09:53:59.0)
Hello, thank you for contacting Thorlabs. I have posted your need in our internal engineering forum, and I will reach out to you directly to discuss this application.
thbu  (posted 2016-12-20 07:09:36.823)
For my design a VM05/M would be very suitable. On the other hand I consider the Polaris K05 mount for the well tested and documented stability. Do you have similar stability measurements for the VM05/M? How much better is the Polaris series? Best regards.
tfrisch  (posted 2016-12-22 06:13:18.0)
Hello, thank you for contacting Thorlabs. The Polaris line was designed with stability in mind whereas VM05/M was intended to be a compact stage with the actuator knobs accessible from the same side. I will reach out to you directly for more details about your application.
user  (posted 2013-03-05 16:06:01.21)
FYI: The step model of VM1 seems to be a little messed up. The plate for mounting the optic is offset to the left, unphysically.
cdaly  (posted 2013-03-07 16:13:00.0)
Response from Chris at Thorlabs: Thank you for your feedback. The front plate does appear to be offset, looks like it was mated to the edge of the cutout rather than being centered. I will try to get this updated. Thank you for pointing this out.
jlow  (posted 2012-08-03 16:07:00.0)
Response from Jeremy at Thorlabs to Fran: The VM05 and VM1 use setscrews to hold the optic in place instead of retaining rings. Therefore, there's not really a maximum optic thickness. The minimum optic thickness is about 0.14" (3.6 mm).
franxm  (posted 2012-08-03 10:29:05.0)
What is the maximum thickness optic the VM05 and VM1 can support? Thanks, Fran

Ø1/2" Kinematic Mirror Mount with Vertical Drives

  • Mounts Ø1/2" Optics
  • Minimum Optic Thickness: 0.14" (3.6 mm)
  • Total Angular Range of ±3°
  • 0.5° per Revolution Adjustment
  • 8-32 (M4) and 4-40 (M3) Mounting Holes

Thorlabs' VM05(/M) Compact Kinematic Mount with Vertical Drive features top-mounted, 0.25 mm pitch actuators designed to keep the beam path clear, which is ideal for use with high-power lasers. Sensitivity is achieved by two fine adjustment screws that offer a 1/2° of angular adjustment per revolution. Each knob can be rotated by hand or by using a 5/64" (2.0 mm) hex key or balldriver. The VM05(/M) mount offers a total angular range of ±3° and a Ø0.44" (11.2 mm) clear aperture. A nylon-tipped locking setscrew secures the Ø1/2" optic. The mount's thick main body increases rigidity to prevent flexing during adjustment.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
VM05 Support Documentation
VM05Kinematic Mount with Vertical Drive, Ø1/2" Optics, 8-32 and 4-40 Taps
$108.21
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+1 Qty Docs Part Number - Metric Price Available
VM05/M Support Documentation
VM05/MKinematic Mount with Vertical Drive, Ø12.7 mm Optics, M4 and M3 Taps
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Ø1" Kinematic Mirror Mount with Vertical Drives

  • Mounts Ø1" Optics
  • Minimum Optic Thickness: 0.11" (2.8 mm)
  • Total Angular Range of ±3°
  • 0.25° per Revolution Adjustment
  • Graduated Knobs with 50 Divisions per Revolution
  • 8-32 (M4) Mounting Holes

Thorlabs' VM1(/M) Compact Kinematic Mount with Vertical Drive features top-mounted 100 TPI actuators designed to keep the beam path clear, which is ideal for use with high-power lasers. Sensitivity is achieved by two fine adjustment screws that offer a 1/4° of angular adjustment per revolution. Unlike the VM05(/M), the screws at the end of the knob cannot be used to rotate the knobs. The VM1(/M) mount offers a total angular range of ±3° and a Ø0.94" (23.9.2 mm) clear aperture. A nylon-tipped locking setscrew secures the Ø1" optic. The mount's thick main body increases rigidity to prevent flexing during adjustment.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
VM1 Support Documentation
VM1Kinematic Mount with Vertical Drive, Ø1" Optics, 8-32 Taps
$168.81
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+1 Qty Docs Part Number - Metric Price Available
VM1/M Support Documentation
VM1/MKinematic Mount with Vertical Drive, Ø25.4 mm Optics, M4 Taps
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Polaris® Ø1" Kinematic Mirror Mounts, 2 Vertical-Drive Adjusters, Monolithic Optic Retention


Click to Enlarge

Using the POLARIS-K1VS2 Ø1" Mount:
A: POLARIS-T2 Tool for Adjusting POLARIS-LNS1 Collars
B: 5/64" or 2.0 mm Hex Key in the End of an Adjuster
C: POLARIS-N5 Removable Knobs on the Adjusters*
D: HKTS-5/64 Hex Knobs on the Adjusters
A similar process can be used for the POLARIS-K1VS2L.
Key Specificationsa
Accepted Optic Size Ø1", ≥0.14" (3.5 mm) Thick
Adjustment per Revolutionb ~7.7 mrad/rev
Mechanical Angular Range (Nominal) ±4°
Beam Deviation After Thermal Cyclingc <1 μrad
Vacuum Compatibilityd 10-9 Torr at 25 °C with Proper Bake Out
10-5 Torr at 25 °C without Bake Out
Grease Vapor Pressure:10-13 Torr at 20 °C; 10-5 Torr at 200 °C
Epoxy Meets Low Outgassing Standards NASA ASTM E595, Telcordia GR-1221
Operating Temperature Range -30 to 200 °C
  • Please see the Specs tab here for complete specifications.
  • When the front plate is parallel to the back plate.
  • After 12.5 °C temperature cycle, the beam returns to within 1 μrad of its original position for a Polaris mounted on a Ø1" post with a 2" beam height. Please see the Test Data tab here for more details.
  • Vacuum-compatible Polaris mounts are assembled in a clean environment, chemically cleaned using the Carpenter AAA passivation method to remove sulfur, iron, and contaminants from the surface, and double vacuum bagged. The 8-32 and M4 cap screws included with the Polaris mounts are not rated for pressures below 10-5 Torr. Prior to placing any components in a sensitive vacuum system, a thorough pre-baking in a bake-out oven should be performed to remove all moisture and surface volatiles. Contact Tech Support for details.
  • Designed for use with Ø1" Optics
  • ±4° Mechanical Angular Range
  • ~7.7 mrad/rev Resolution
  • 100 TPI Matched Actuator/Body Pairs
  • Less than 1 µrad Deviation after Temperature Cycling (See the Test Data Tab on the Full Web Presentation for Details)
  • Patented Monolithic Flexure Arm Design (US Patent 10,101,559)
  • Right- and Left-Handed Versions Available

These 2-Adjuster Ø1" Polaris Kinematic Mirror Mounts provide long-term stability and high-resolution adjustment using vertical drives. Right-handed and left-handed versions of these mounts are available. The patented optic bore design with a monolithic flexure arm keeps wavefront distortion on the mounted optic to a minimum while providing strong optic retention force; the flexure arm can be actuated using the included screw and a 0.05" (1.3 mm) hex key. The Polaris design addresses all of the common causes of beam misalignment and is designed to be compatible with cleanroom and vacuum applications (see the table below).

These mirror mounts come with 100 TPI adjusters that feature a 5/64" (2.0 mm) hex and may be adjusted with our HKTS-5/64 Hex Key Thumbscrews, the hex on the end of the SA1 Adjustment Tool, or any other 5/64" (2.0 mm) hex wrench. Alternatively, POLARIS-N5 removable, low-profile adjustment knobs can be threaded onto the adjusters for improved feel in fine-resolution adjustments, although mechanical angular range may be reduced. The adjusters on these mounts can be locked using the POLARIS-LNS1 locking collars. Two are pre-installed on the mounts, one for each adjuster. The included locking collars can be loosened or tightened most easily using the POLARIS-T2 spanner wrench.

Post mounting is provided by two #8 (M4) counterbores. For custom mounting configurations, two Ø2 mm alignment pin holes are located on each mounting face for setting a precise location and mounting angle. Standard DIN 7-m6 ground dowel pins are recommended (click on the red documents icon below for details). We recommend using these mounts with stainless steel posts that also have Ø2 mm alignment pin holes, such as our Ø1" Posts for Polaris Mirror Mounts.

For more details, please see the Polaris Vertical Drive Mounts page.

*POLARIS-N5 Removable Knobs thread directly onto the exposed adjuster screws. Using them on the POLARIS-K1VS2 or POLARIS-K1VS2L may result in a reduced mechanical angular range.

Product Highlight: Polaris Vertical Mirror Mount
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
POLARIS-K1VS2 Support Documentation
POLARIS-K1VS2Polaris® Right-Handed Ø1" Mirror Mount, 2 Vertical-Drive Hex Adjusters, Monolithic Optic Retention
$350.00
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POLARIS-K1VS2L Support Documentation
POLARIS-K1VS2LPolaris® Left-Handed Ø1" Mirror Mount, 2 Vertical-Drive Hex Adjusters, Monolithic Optic Retention
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Polaris® Ø2" Kinematic Mirror Mounts, 2 Vertical-Drive Adjusters, Monolithic Optic Retention

Key Specificationsa
Accepted Optic Size Ø2", ≥0.14" (3.5 mm) Thick
Adjustment per
Revolutionb
~5 mrad/rev
Mechanical Angular
Range (Nominal)
±3°
Beam Deviation After
Thermal Cyclingc
≤2 μrad
Vacuum Compatibilityd 10-9 Torr at 25 °C with Proper Bake Out;
10-5 Torr at 25 °C without Bake Out;
Grease Vapor Pressure:10-13 Torr at 20 °C, 10-5 Torr at 200 °C;
Epoxy Meets Low Outgassing Standards
NASA ASTM E595, Telcordia GR-1221
Operating Temperature
Range
-30 to 200 °C
  • Please see the Specs tab here for complete specifications.
  • When the front plate is parallel to the back plate.
  • After 12.5 °C temperature cycle, the beam returns to within 2 μrad of its original position for a Polaris mounted on a Ø1" post with a 2" beam height. Please see the Test Data tab here for more details.
  • Vacuum-compatible Polaris mounts are assembled in a clean environment, chemically cleaned using the Carpenter AAA passivation method to remove sulfur, iron, and contaminants from the surface, and double vacuum bagged. The 8-32 and M4 cap screws included with the Polaris mounts are not rated for pressures below 10-5 Torr. Prior to placing any components in a sensitive vacuum system, a thorough pre-baking in a bake-out oven should be performed to remove all moisture and surface volatiles. Contact Tech Support for details.
  • Designed for use with Ø2" Optics
  • ±3° Mechanical Angular Range (Nominal)
  • ~5 mrad/rev Resolution
  • 100 TPI Matched Actuator/Body Pairs
  • No Greater than 2 µrad Deviation after Temperature Cycling (See the Test Data Tab on the Full Web Presentation for Details)
  • Patented Monolithic Flexure Arm Design (US Patent 10,101,559)
  • Right and Left-Handed Versions Available

These 2-Adjuster Ø2" Polaris Kinematic Mirror Mounts provide long-term stability and high-resolution adjustment using vertical drives. Right-handed and left-handed versions of these mounts are available. The patented optic bore design with a monolithic flexure arm keeps wavefront distortion on the mounted optic to a minimum while providing strong optic retention force; the flexure arm can be actuated using the included screw and a 0.05" (1.3 mm) hex key. The Polaris design addresses all of the common causes of beam misalignment and is designed to be compatible with cleanroom and vacuum applications (see the table to the right).

These mirror mounts come with 100 TPI adjusters that feature a 5/64" (2.0 mm) hex and may be adjusted with our HKTS-5/64 Hex Key Thumbscrews, the hex on the end of the SA1 Adjustment Tool, or any other 5/64" (2.0 mm) hex wrench. Alternatively, POLARIS-N5 removable, low-profile adjustment knobs can be threaded onto the adjusters for improved feel in fine-resolution adjustments, although mechanical angular range may be reduced. The adjusters on these mounts can be locked using the POLARIS-LNS1 locking collars. Two are pre-installed on the mounts, one for each adjuster. The included locking collars can be loosened or tightened most easily using the POLARIS-T2 spanner wrench. Examples of these methods for turning or locking the adjusters on a POLARIS-K1VS2 Ø1" mirror mount, which has identical adjusters to the POLARIS-K1VS2(L) Ø2" mirror mounts, are shown in the image above.

Post mounting is provided by three #8 (M4) counterbores. For custom mounting configurations, two Ø2 mm alignment pin holes are located on the mounting face for setting a precise location and mounting angle. Standard DIN 7-m6 ground dowel pins are recommended (click on the red documents icon below for details). We recommend using these mounts with stainless steel posts that also have Ø2 mm alignment pin holes, such as our Ø1" Posts for Polaris Mirror Mounts.

For more details, please see the Polaris Vertical Drive Mounts page.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
POLARIS-K2VS2 Support Documentation
POLARIS-K2VS2NEW!Polaris® Right-Handed Ø2" Mirror Mount, 2 Vertical-Drive Hex Adjusters, Monolithic Optic Retention
$700.00
Today
POLARIS-K2VS2L Support Documentation
POLARIS-K2VS2LNEW!Polaris® Left-Handed Ø2" Mirror Mount, 2 Vertical-Drive Hex Adjusters, Monolithic Optic Retention
$700.00
Today