Thorlabs Inc.
Visit the Kinematic Rectangular Optic Mounts page for pricing and availability information

Kinematic Rectangular Optic Mounts

  • Mount Rectangular Optics from 1/2" to 2" Tall
  • Versions with Adjustable Optic Height Offered

Holds Optics up to
1.3" (33.0 mm) Tall  

KM05S

Right-Handed Mount for
1/2" (12.7 mm) Tall Optics

KM100CL

Adjustable Left-Handed Mount
(Lens Sold Separately)

KM200S

Right-Handed Mount for
2" (50.8 mm) Tall Optics

KMSR

Compact Kinematic Mount
with 25 mm Tall Diffraction Grating (Sold Seperately)

KM2536

Right-Handed Mount for
25 mm Tall Optics Shown with 1 mm Thick, 25 mm x 36 mm Dichroic Filter (Sold Seperately)

Hide Overview

OVERVIEW

Kinematic Mounts for Rectangular Optics
Click to Enlarge
Relative Sizes of Our Kinematic Mounts for Rectangular Optics

Features

  • Five Designs Available:
    • Mini-Series Mount for 1/2" Tall Rectangular Optics
    • Mount for 25 mm x 36 mm and 25 mm x 50 mm Optics
    • Compact Mount for 1" Tall Rectangular Optics
    • Standard Mounts for 1/2", 1", or 2" Tall Rectangular Optics
    • Adjustable Optic Height Mounts for Rectangular Optics up to 1.3" (33.0 mm) Tall
  • Right- and Left-Handed Versions Available for KM05, KM100, and KM200 Series Mounts
  • Fabricated from Black Anodized Aluminum
  • Hardened Steel Inserts at Kinematic Contact Points to Reduce Wear
  • Compatible with our Mini-Series or Ø1/2" Posts

Thorlabs offers fixed and adjustable optic height kinematic mounts for square or rectangular optics, such as our square metallic or dielectric mirrors, diffraction gratings, and plate beamsplitters. The adjustable optic height mounts are designed to accept rectangular optics up to 1.3" (33.0 mm) tall, such as our cylindrical lenses. We also offer a 90° flip mount for rectangular optics.


Hide Kinematic Mounts for 1/2" Tall Rectangular Optics

Kinematic Mounts for 1/2" Tall Rectangular Optics

MK05S with 1/2" Square Mirror
Click to Enlarge
MK05S Kinematic Mount Shown with 1/2" Square Mirror
  • Hold 1/2" Tall Square or Rectangular Optics
  • ±4° Tip/Tilt Adjustment Range
  • High Resolution:
    • MK05S(/M): 13.4 mrad per Adjuster Revolution
    • KM05S(L)(/M): 13 mrad per Adjuster Revolution
  • Post Mounting Features:
    • MK05S(/M): Two 4-40 (M3) Taps for Mini-Series Posts
    • KM05S(L)(/M): Two 8-32 (M4) Taps for Ø1/2" Posts

The MK05S(/M) Mini-Series Kinematic Mount holds 1/2" tall rectangular optics that are at least 2.54 mm (0.10") thick, such as metallic or dielectric mirrors and diffraction gratings. The optic is secured with a nylon-tipped 0.050" (1.3 mm) hex setscrew. The setscrew and bottom of the mount provide three points of contact for stable mounting. This mount has two 4-40 (M3) threaded holes that enable horizontal or vertical mounting. This two-adjuster mount does not come with adjuster knobs, making it ideal for use in confined spaces. The M2.5 x 0.20 adjusters are actuated with a 0.050" (1.3 mm) hex key, such as our HKTS-050 Hex Key Thumbscrews. The angular displacement range of the mirror face is ±4° with an adjustment of 13.4 mrad (0.76°) per revolution. An optional accessory, the F10SC1-5 Locking Collar, is available to lock the M2.5 x 0.20 adjusters once the desired position is achieved. We also offer Mini-Series mounts for round mirrors.

The KM05S(/M) and KM05SL(/M) Standard Mounts secure 1/2" rectangular optics that are at least 3.0 mm (0.12") thick using a nylon-tipped 5/64" (2.0 mm) hex setscrew and a flexure clamp mechanism. The setscrew presses the flexure clamp against the edge of the optic to create an area of contact, holding the optic securely in the mount. The KM05S(/M) and KM05SL(/M) are right- and left-handed mounts, respectively. Each mount has two 8-32 (M4) tapped holes for mounting to our Ø1/2" posts. These mounts do not come with adjuster knobs, making them ideal for use in confined spaces. The 3/16"-100 adjusters are actuated with a 5/64" (2.0 mm) hex key, such as our HKTS-5/64 Hex Key Thumbscrews (sold below). An optional accessory, the F19SC1 Locking Collar, is available to lock the 3/16"-100 adjusters once the desired position is achieved.


Part Number
Description
Price
Availability
MK05S/M
Mini-Series Kinematic Mount for 12.7 mm Tall Rectangular Optics, Right Handed, M3 Taps
$120.76
Today
KM05S/M
Kinematic Mount for 12.7 mm Tall Rectangular Optics, Right Handed, M4 Tap
$79.90
Today
KM05SL/M
Kinematic Mount for 12.7 mm Tall Rectangular Optics, Left Handed, M4 Tap
$79.90
Today
MK05S
Mini-Series Kinematic Mount for 1/2" Tall Rectangular Optics, Right Handed, 4-40 Taps
$120.76
Today
KM05S
Kinematic Mount for 1/2" Tall Rectangular Optics, Right Handed, 8-32 Tap
$79.90
Today
KM05SL
Kinematic Mount for 1/2" Tall Rectangular Optics, Left Handed, 8-32 Tap
$79.90
Today

Hide Kinematic Mount for 25 mm Tall Rectangular Optics

Kinematic Mount for 25 mm Tall Rectangular Optics

An MD453 1 mm Thick, 25 mm x 36 mm Dichroic Filter Secured in the KM2536 Mount with Spring Clamps

KM2536 Front View Grating
Click to Enlarge
The KM2536 mount can hold 25 mm x 50 mm optics at least 3 mm thick, like the GE2550-0363 Diffraction Grating shown here.
  • Secure 1 mm Thick, 25 mm x 36 mm Optic with Spring Clips on the Back of the Front Plate
  • Mount ≥3 mm Thick, 25 mm x 50 mm Optic in the Front of the Front Plate Using Nylon-Tipped Setscrew
  • 1.85" x 1.00" Elliptical Clear Aperture
  • ±3° Tip/Tilt Adjustment Range
  • 8 mrad per Adjuster Revolution
  • Compatible with our Ø1/2" Posts

The KM2536 Kinematic Mount features a front plate that can hold both a 25 mm x 36 mm optic that is 1 mm thick and a 25 mm x 50 mm rectangular optic that is ≥3 mm thick. To secure the 25 mm x 36 mm optic without introducing excessive stress, the back of the front plate has a mounting frame with spring-loaded clamps that can be adjusted using a 0.050" (1.3 mm) ball driver or hex key. This is ideal for mounting 25 mm x 36 mm dichroic, non-polarizing, and polarizing beamsplitters. Optics 3 mm or thicker, such as 25 mm x 50 mm diffraction gratings, can be secured on the front side of the front plate using a nylon-tipped, 5/64" (2.0 mm) hex setscrew.

The mount features two removable 1/4"-80 adjuster knobs for ±3° of tip/tilt. Tip/tilt can also be adjusted with a 5/64" (2.0 mm) hex key or ball driver. Two #8 (M4) clearance holes enable horizontal or vertical mounting. An optional accessory, the LN2580 Bronze Locking Nut, is available to lock the 1/4"-80 adjusters once the desired position is reached. We also offer the F25SSK1L Large-Diameter Knob for finer actuator control and the PIAK10 Piezo Inertia Actuator for high-resolution motorized control.


Part Number
Description
Price
Availability
KM2536
Customer Inspired! Kinematic Mount for 25 mm x 36 mm x 1 mm and 25 mm x 50 mm x ≥3 mm Rectangular Optics, Right Handed
$134.64
Today

Hide Kinematic Mounts for 1" Tall Rectangular Optics

Kinematic Mounts for 1" Tall Rectangular Optics

KMSR Front View
Click to Enlarge
The KMSR(/M) mount also has an 8-32 (M4) tap for platform-mounting optics, like this PS995 dove prism.
.
  • Hold 1" Tall Square or Rectangular Optics
  • Mount Optics Greater than 3.0 mm (0.12") Thick
  • Tip/Tilt Adjustment Range of ±4° 
  • High Resolution:
    • KMSR(/M): 15 mrad per Adjuster Revolution
    • KM100S(L): 8 mrad per Adjuster Revolution
  • Features for Mounting to Ø1/2" Posts:
    • KMSR(/M): Two 8-32 (M4) Taps
    • KM100S(L): Two #8 (M4) Counterbores

These kinematic mounts are designed to hold 1" tall rectangular optics that are at least 3.0 mm (0.12") thick, such as metallic or dielectric mirrors and diffraction gratings.   

The KMSR(/M) Compact Mount features a compact design in which the optic is secured with a nylon-tipped 5/64" (2.0 mm) hex setscrew, as shown in the photo to the right. The setscrew and bottom of the mount provide three points of contact for stable mounting. This mount has two 8-32 (M4) threaded holes that enable horizontal or vertical mounting. This two-adjuster mount does not come with adjuster knobs, making it ideal for use in confined spaces. The 3/16"-100 adjusters are actuated with a 5/64" (2.0 mm) hex key, such as our HKTS-5/64 Hex Key Thumbscrews (sold below). The angular displacement range of the mirror face is ±4° with an adjustment of 15 mrad per revolution. An optional accessory, the F19SC1 Locking Collar, is available to lock the 3/16"-100 adjusters once the desired position is achieved. We also offer versions of this mount for round mirrors.

The KM100S and KM100SL Mounts secure 1" rectangular optics that are at least 3.0 mm (0.12") thick using a nylon-tipped 5/64" (2.0 mm) hex setscrew and a flexure clamp mechanism. The setscrew presses the flexure clamp against the edge of the optic to create an area of contact, holding the optic securely in the mount. The KM100S mount is right handed, while the KM100SL is left handed. They feature two 1/4"-80 adjusters and include one 8-32 cap screw and one M4 cap screw for mounting to our Ø1/2" posts. An optional accessory, the LN2580 Bronze Locking Nut, is available to lock the 1/4"-80 adjusters once the desired position is reached. We also offer the F25SSK1L Large-Diameter Knob for finer actuator control and the PIAK10 Piezo Inertia Actuator for high-resolution motorized control.


Part Number
Description
Price
Availability
KMSR/M
Compact Kinematic Mount for 25.4 mm Tall Rectangular Optics, M4 Taps
$82.33
Today
KM100S
Kinematic Mount for 1" (25.4 mm) Tall Rectangular Optics, Right Handed
$93.85
Today
KM100SL
Customer Inspired! Kinematic Mount for 1" (25.4 mm) Tall Rectangular Optics, Left Handed
$93.85
Today
KMSR
Compact Kinematic Mount for 1" Tall Rectangular Optics, 8-32 Taps
$82.33
Today

Hide Kinematic Mounts for 2" Tall Rectangular Optics

Kinematic Mounts for 2" Tall Rectangular Optics

  • Hold 2" Tall Square or Rectangular Optics
  • Mount Optics Greater than 3.0 mm (0.12") Thick
  • ±3° Tip/Tilt Adjustment Range, 5 mrad per Adjuster Revolution
  • Compatible with Our Ø1/2" Posts

Our KM200S(L) Mounts hold 2" tall square or rectangular optics that are at least 3.0 mm (0.12") thick. We recommend these mounts for holding our square metallic or dielectric mirrors and diffraction gratings. The KM200S mount is right handed, while the KM200SL is left handed. The optic is secured in each mount with a nylon-tipped 5/64" (2.0 mm) hex setscrew and a flexure clamp mechanism. The setscrew presses the flexure clamp against the edge of the optic to create an area of contact, holding the optic securely in the mount. It features two 1/4"-80 adjusters for tip/tilt adjustment and six #8 (M4) counterbored holes for mounting to our Ø1/2" posts. One 8-32 cap screw and one M4 cap screw are included with the mount. An optional accessory, the LN2580 Bronze Locking Nut, is available to lock the 1/4"-80 adjusters once the desired position is reached. We also offer the F25SSK1L Large-Diameter Knob for finer actuator control and the PIAK10 Piezo Inertia Actuator for high-resolution motorized control.


Part Number
Description
Price
Availability
KM200S
Kinematic Mount for 2" (50.8 mm) Tall Rectangular Optics, Right Handed
$161.56
Today
KM200SL
Customer Inspired! Kinematic Mount for 2" (50.8 mm) Tall Rectangular Optics, Left Handed
$161.56
Today

Hide Adjustable Kinematic Mounts for Rectangular Optics up to 1.3" Tall

Adjustable Kinematic Mounts for Rectangular Optics up to 1.3" Tall

KM100C ApplicationClick to Enlarge
[APPLIST]
KM100C Mount with 50 mm Tall Cylindrical Lens Using Additional ER Rods
  • Adjustable Clamping Arm Capable of Mounting Optics up to 1.3" (33.0 mm) Tall
  • Mounts Optics up to 65 mm Wide
  • Tip/Tilt Adjustment Range of ±4°, 8 mrad per Adjuster Revolution
  • Two #8 (M4) Counterbores at 90° in Back Plate Enable Post Mounting
  • Right- and Left-Handed Configurations Available
  • Rubber Pads Increase Contact Area with Optic

The KM100C(L) Adjustable-Height Mounts are ideal for mounting cylindrical lenses of various sizes. They are available in right-handed (item # KM100C) or left-handed (item # KM100CL) configurations. Optics are securely held in place by two rubber-padded arms that can be locked with a 0.05" hex key. The length of the rubber pads is 0.79" (20.0 mm) and we recommend mounting optics with an edge thickness no greater than 0.3" (7.62 mm). Mounting larger optics may affect the stability and performance of the mounts.

The mount accepts cylindrical optics up to 1.3" (33.0 mm) tall. The adjustable clamping arm is mounted to two preinstalled ER1.5 rods. To accommodate taller optics, additional ER rods (sold separately) can be screwed onto those included with the mount (as seen in the photo to the right). It also has two #8 (M4) counterbores for mounting to our Ø1/2" posts.

The kinematic tip/tilt adjustments, driven by two 1/4"-80 adjusters, simplify positioning. An optional accessory, the LN2580 Bronze Locking Nut, is available to lock the adjusters once the desired position is reached.


Part Number
Description
Price
Availability
KM100C
Kinematic Mount for up to 1.3" (33 mm) Tall Rectangular Optics, Right Handed
$112.57
Today
KM100CL
Kinematic Mount for up to 1.3" (33 mm) Tall Rectangular Optics, Left Handed
$112.57
Today

Hide 5/64" Hex Key Adjusters

5/64" Hex Key Adjusters

POLARIS-K1 with HKTS-5/64 Adjuster
Click for Details

POLARIS-K1E2 with HKTS-5/64 Adjuster
  • 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.


Part Number
Description
Price
Availability
HKTS-5/64
Customer Inspired! 5/64" (2 mm) Hex Key Thumbscrew, 4 Pack
$28.42
Today