Kinematic Mounts for Cage Systems


  • Cage System Compatible
  • Precision Angular Adjustment of Optics
  • Mounts for Ø1/2", Ø1", and Ø2" Optics

Anti-Drift
Locking Collet

KC2L

Locking Mount for Ø2" Optics

KC05-T

SM05-Threaded Mount for Ø1/2" Optics

KC1T

SM1-Threaded Mount for Ø1" Optics

Application Idea

 

KC45D1 Turret Mount Shown in Cage System

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Cage Assembly Systems provide a convenient way to construct large optomechanical systems with an established line of precision-machined building blocks designed for high flexibility and accurate alignment. These mounts combine the features of our traditional Kinematic and Gimbal Mounts with the flexibility of our cage assembly systems. Our gimbal and kinematic cage mounts are fabricated from black anodized aluminum, and have been designed to allow for the precise angular positioning of Ø1/2", Ø1", and Ø2" optics within 16 mm, 30 mm, or 60 mm cage systems.

Item # Cage System Size Optic Diameter Optic Thickness Optic Retention Description
KC05-T (KC05-T/M) 16 mm 0.5" (12.7 mm) 0.15" (3.8 mm) Maxa Retaining Ring Kinematic Mount
KC1L (KC1L/M) 30 mm 1" (25.4 mm) 0.12" (3 mm) Min Setscrew Kinematic Mount
KC1T (KC1T/M) 30 mm 1" (25.4 mm) 0.23" (5.8 mm) Maxa Retaining Ring Kinematic Mount
KC1XY(/M) 30 mm 1" (25.4 mm) 0.23" (5.8 mm) Maxa Retaining Ring Kinematic Mount
KC45D1 30 mm 1" (25.4 mm) 0.24" (6 mm) Maxa Retaining Ring Gimbal Mount
KC2L (KC2L/M) 60 mm 2" (50.8 mm)  0.12" (3.0 mm) Min Setscrew Kinematic Mount
KC2T (KC2T/M) 60 mm 2" (50.8 mm) 0.2" (5.0 mm) Maxa Retaining Ring Kinematic Mount
  • These mounts use one or two retaining rings to secure the optic; as a result, the thickness of the optic that can be mounted is limited by the thickness of the threaded bore. For some applications it may be appropriate to use a lens tube in order to increase the maximum allowed thickness.

Please note that Thorlabs also offers Right Angle Kinematic Cage Mounts to situate the optic at a mean horizontal angle of 45° within a cage assembly system.

Cage System Overview

The Cage Assembly System provides a convenient way to construct large optomechanical systems with an established line of precision-machined building blocks designed for high flexibility and accurate alignment.

16 mm, 30 mm, and 60 mm Cage System Standards

Thorlabs offers three standards defined by the center-to-center spacing of the cage assembly rods (see image below). The 16 mm cage, 30 mm cage, and 60 mm cage standards are designed to accommodate Ø1/2", Ø1", and Ø2" optics, respectively. Specialized cage plates that allow smaller optics to be directly inserted into our larger cage systems are also available.

Standard Threads

The flexibility of our Cage Assembly System stems from well-defined mounting and thread standards designed to directly interface with a wide range of specialized products. The three most prevalent thread standards are our SM05 Series (0.535"-40 thread), SM1 Series (1.035"-40 thread), and SM2 Series (2.035"-40 thread), all of which were defined to house the industry's most common optic sizes. Essential building blocks, such as our popular lens tubes, directly interface to these standards.


An example of the standard cage plate measurements determining cage system compatibility.
Standard Cage System Measurements
Cage System 16 mm 30 mm 60 mm
Thread Series SM05 SM1 SM2
Rod to Rod Spacing 16 mm (0.63") 30 mm (1.18") 60 mm (2.36")
Total Length 25 mm (0.98") 41 mm (1.60") 71.1 mm (2.80")
Cage Components
Cage Rods 16 mm These rods are used to connect cage plates, optic mounts, and other components in the cage system. The SR Series Cage Rods are compatible with our 16 mm cage systems, while the 30 mm and 60 mm cage systems use ER Series Cage Rods.
30 mm
60 mm
Cage Plates 16 mm These serve as the basic building blocks for a cage system. They may have SM-threaded central bores, smooth bores sized for industry standard optics or to accommodate the outer profile of our SM Series Lens Tubes, or specialized bores for other components such as our FiberPorts.
30 mm
60 mm
Optic Mounts 16 mm Thorlabs offers fixed, kinematic, rotation, and translation mounts specifically designed for our Cage Systems.
30 mm
60 mm
Cage Cubes 16 mm These cubes are useful for housing larger optical components, such as prisms or mirrors, or optics that need to sit at an angle to the beam path, such as beamsplitters. Our cage cubes are available empty or with pre-mounted optics.
30 mm
60 mm
Replacement Setscrews Replacement setscrews are offered for our 16 mm (SS4B013, SS4B025, and SS4B038) and 30 mm (SS4MS5 and SS4MS4) cage systems products.
Post and Breadboard Mounts and Adapters Mounting options for cage systems can be found on our Cage System Construction pages. Cage Systems can be mounted either parallel or perpendicular to the table surface.
Size Adapters Cage System Size Adapters can be used to integrate components from different cage system and threading standards.
Specialized Components Thorlabs also produces specialized cage components, such as Filter Wheels, a HeNe Laser Mount, and a FiberPort Cage Plate Adapter, allowing a wide range of our products to be integrated into cage-mounted optical systems. Explore our Cage Systems Visual Navigation Guide to see the full range of Thorlabs' cage components.

Posted Comments:
oliver.hohn  (posted 2013-11-04 08:52:20.807)
How is the surface finish of this product? As I understand, it is made of Aluminium. So I'm wondering, whether it blackened by anodizing or if it is painted? Best regards, Oliver Hohn
pbui  (posted 2013-11-06 09:59:03.0)
Response from Phong at Thorlabs: The KC1/M is made of black anodized aluminum.

16 mm Cage Kinematic Mount

Front Panel
Click to Enlarge
KC05-T mounted in a 16 mm cage system using four SR cage rods.
  • Mounts Ø1/2" (Ø12.7 mm) Optics
  • Provides ±2.5° Kinematic Tip and Tilt Adjustment
  • SM05 (0.535"-40) Threaded Mounting Bore for Thin Optics
  • 16 mm Cage Compatible
  • Post Mountable: Two #8-32 (M4) Tapped Holes

The KC05-T Kinematic Mount is designed for our 16 mm cage systems. Four SR series cage rods can be passed through the mount and locked into place using setscrews. Each kinematic mount features three 3/16"-100 fine adjustment screws, offering an adjustment per revolution of 9 mrad/rev. The adjusters have a 5/64" hex socket for adjustment, and one 5/64" hex key is included with each mount. The KC05-T(/M) is SM05-threaded, which allows it to hold thin optics and can hold optics up to 0.15" (3.8 mm) thick. The KC05-T Kinematic Mount includes two SM05RR Retaining Rings to secure optics within the mount. If replacement setscrews are needed, we offer the 1/8" long SS4B013 and the 1/4" long SS4B025 brass setscrews, which both use a 0.05" (1.3 mm) hex.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
KC05-T Support Documentation
KC05-TSM05 Threaded Kinematic Cage Mount, Ø1/2" Optics
$104.53
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+1 Qty Docs Part Number - Metric Price Available
KC05-T/M Support Documentation
KC05-T/MSM05 Threaded Kinematic Cage Mount, Ø1/2" Optics, Metric
$104.53
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30 mm Cage-Compatible Smooth Bore Kinematic Mount


Click to Enlarge

KC1L Back View
  • ±5º Tip / Tilt, ±3 mm Linear Translation Along the Optical Axis
  • Accepts Ø1" (25.4 mm) Optics
  • Minimum Optic Thickness: 0.12" (3 mm)
  • Compatible with 30 mm Cage System
  • 8-32 (M4 x 0.7) Holes for Post Mounting on Three Sides

The KC1L(/M) Kinematic Mount is designed with a smooth, double-bored mounting hole that can accommodate a Ø1" optic that is at least 0.12" (3 mm) thick; the optic is held in place with a top-located, nylon-tipped locking screw. These kinematic mounts come with three 1/4"-80 adjusters that provide 0.4° (7 mrad) adjustment per revolution and up to ±5° of tip and tilt without cage rods inserted through the mount. Each of the mount's three adjusters can be independently locked using a side-located 5/64" (2.0 mm) hex setscrew.

Both the front and rear plates have been machined with four clearance holes designed for direct compatibility with our 30 mm cage system standard. The cage rod holes in the front plate are sufficiently oversized to allow ±4° tip and tilt adjustment without cage rod interference. Once the mount has been slid along the cage rods to the desired position, tighten the 2.0 mm (5/64") locking setscrews on the back plate to secure it in place. The back plate of each mount also has 8-32 (M4 x 0.7) mounting holes on three of the four sides, providing compatibility with Thorlabs' Ø1" mounting posts.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
KC1L Support Documentation
KC1LKinematic 30 mm-Cage-Compatible Mount for Ø1" Optic
$109.00
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+1 Qty Docs Part Number - Metric Price Available
KC1L/M Support Documentation
KC1L/MKinematic 30 mm-Cage-Compatible Mount for Ø1" Optic, Metric
$109.00
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30 mm Cage-Compatible SM1-Threaded Kinematic Mount


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KC1T Back View
  • ±5º Tip / Tilt, ±3 mm Linear Translation Along the Optical Axis
  • Accepts Ø1" (25.4 mm) Optics
  • Maximum Optic Thickness: 0.23" (5.8 mm)
  • Compatible with 30 mm Cage System
  • 8-32 (M4 x 0.7) Holes for Post Mounting on Three Sides

The KC1T(/M) Kinematic Mount is designed with an SM1-threaded (1.035"-40) mounting hole that can directly hold optics up to 5.8 mm (0.23") thick using the two included SM1RR Retaining Rings. Thicker optics can be accommodated by housing the optic in one of our SM1-Series Lens Tubes and then threading the lens tube into the front plate of the mount. Alternatively, since the back plate features an oversized Ø1.32" bore, SM1 lens tubes can also be attached to the front plate from the rear of the mount without sacrificing angular adjustment. This kinematic mount comes with three 1/4"-80 adjusters that provide 0.4° (7 mrad) adjustment per revolution and up to ±5° of tip and tilt without cage rods inserted through the mount. Each of the mount's three adjusters can be independently locked using a side-located 5/64" (2.0 mm) hex setscrew.

Both the front and rear plate have been machined with four clearance holes designed for direct compatibility with our 30 mm cage system standard. The cage rod holes in the front plate are sufficiently oversized to allow ±4° tip and tilt adjustment without cage rod interference. Once the mount has been slid along the cage rods to the desired position, tighten the 5/64" (2.0 mm) locking setscrews on the back plate to secure it in place. The back plate also has 8-32 (M4 x 0.7) mounting holes on three of the four sides, providing compatibility with Thorlabs' Ø1" mounting posts.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
KC1T Support Documentation
KC1TKinematic, SM1-Threaded, 30 mm-Cage-Compatible Mount for Ø1" Optic
$110.18
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+1 Qty Docs Part Number - Metric Price Available
KC1T/M Support Documentation
KC1T/MKinematic, SM1-Threaded, 30 mm-Cage-Compatible Mount for Ø1" Optic, Metric
$110.18
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30 mm Cage-Compatible SM1-Threaded Kinematic Mount with Slip Plate

Specifications
Item # KC1XY KC1XY/M
Post Mounting 2 8-32 Tapped Holes 2 M4 Tapped Holes
Angular Drivers 1/4"-80 TPI Adjustersa
Locking Screw Hex 5/64" (2.0 mm)
(4 Places)
XY Travel ±1.0 mm (±0.04") per Axis
with Lockable Slip Plate
Angular Resolution 0.4°/rev
Angular Displacement ±4°
Z Travel ±3.0 mm (±0.12")
Inner Slip Plate
XY Travel
±0.04" (1 mm) per Axis
Optic Thickness (Max) 0.23" (5.8 mm)
Optic Mounting Internal SM1 (1.035"-40) Thread
2 SM1RR Retaining Rings
  • Can be Locked Using a Setscrew and a 5/64" (2 mm) Hex Key

Click to Enlarge

KC1XY Back View
  • Slip Plate Provides ±1 mm of Coarse
    X and Y Adjustment
  • ±4º Tip / Tilt, ±3 mm Linear Translation
    Along the Optical Axis
  • Accepts Ø1" Optics
  • Maximum Optic Thickness: 0.23" (5.8 mm)
  • Compatible with Our 30 mm Cage Systems
  • 8-32 (M4) Tapped Holes for Post Mounting

The KC1XY(/M) Kinematic Mount is designed with an SM1 (1.035"-40) threaded mounting hole in a front slip plate that enables direct mounting of optics up to 5.8 mm (0.23") thick using the included SM1RR Retaining Rings. Thicker optics can be accommodated by housing the optic in one of our SM1 Series Lens Tubes and then threading the lens tube into the front plate of the mount. Alternatively, since the back plate of the KC1XY(/M) Kinematic Mount features an oversized bore, SM1 lens tubes can also be attached to the front plate from the rear of the mount without sacrificing angular adjustment. This threaded, kinematic mount comes with three adjusters that can be independently locked.

Both the front and rear plates have been machined with four clearance holes designed for direct compatibility with our 30 mm cage system standard. The cage rod holes in the front plate are sufficiently oversized to allow ±4° tip and tilt adjustment without cage rod interference. Once the desired position is achieved, locking setscrews on the rear plate can be used to secure the rods in place. These setscrews have a hex of 5/64" (2.0 mm). In addition to 30 mm cage compatibility, the KC1XY(/M) has an 8-32 (M4) hole on each side of the back plate for post mounting.

The slip plate feature incorporated into these mounts provides ±1 mm of coarse travel in X and Y with respect to the front plate, which enables additional freedom when setting an optic's position within a cage system. Three locking screws allow the user to lock the slip plate down once the desired location has been reached. The user should note, however, that loosening the locking screws may result in excessive coarse movement (slop) in the slip plate. For best performance, tighten the locking screws, and then release them only enough to allow for smooth operation of the slip plate.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
KC1XY Support Documentation
KC1XYKinematic, SM1-Threaded, 30 mm-Cage-Compatible Mount with Slip Plate for Ø1" Optic
$192.44
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+1 Qty Docs Part Number - Metric Price Available
KC1XY/M Support Documentation
KC1XY/MKinematic, SM1-Threaded, 30 mm-Cage-Compatible Mount with Slip Plate for Ø1" Optic, Metric
$192.44
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Ø1" Gimbal Mirror Mount for the 30 mm Cage System

KC45D Application
Click to Enlarge

View Imperial Product List
Item #QtyDescription
ER6-P41Cage Assembly Rod, 6" Long, Ø6 mm, 4 Pack
ER22Cage Assembly Rod, 2" Long, Ø6 mm
C2A1Swivel Coupler, 4 Pack
CP082SM1-Threaded 30 mm Cage Plate with Flexure Clamping, 1 Retaining Ring, 8-32 Tap
CP331SM1-Threaded 30 mm Cage Plate, 0.35" Thick, 2 Retaining Rings, 8-32 Tap
KC45D11Ø1" Gimbal Mirror Mount, 30 mm Cage Compatible, One Retaining Ring Included
View Metric Product List
Item #QtyDescription
ER6-P41Cage Assembly Rod, 6" Long, Ø6 mm, 4 Pack
ER22Cage Assembly Rod, 2" Long, Ø6 mm
C2A1Swivel Coupler, 4 Pack
CP08/M2SM1-Threaded 30 mm Cage Plate with Flexure Clamping, 1 Retaining Ring, M4 Tap
CP33/M1SM1-Threaded 30 mm Cage Plate, 0.35" Thick, 2 Retaining Rings, M4 Tap
KC45D11Ø1" Gimbal Mirror Mount, 30 mm Cage Compatible, One Retaining Ring Included
Gimbal mounts in combination with our swivel couplers are ideal for creating non-45° incident angles within a cage system.
KC45D Application
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The KC45D1 Gimbal Mount in a 30 mm Cage System
  • True Gimbal Design
  • Maximum Optic Thickness: 0.24" (6 mm)
  • Mounts Ø1" Optics
  • Compatible with Thorlabs' 30 mm Cage System
  • Full 360° Rotation of Optic Holder
  • ±30° Rotation on the Optic Holder Saddle

The KC45D1 Gimbal Mirror Mount is designed to allow a Ø1" optic to be rotated about a point in the center of a 30 mm cage assembly with true gimbal motion. The optic holder is free to rotate through 360°. Once its coarse angular orientation is set, the fine adjustment mechanism (i.e., two 100 TPI adjusters offering an adjustment per revolution of 13 mrad/rev) can be used for precise alignment, using the HKTS-5/64 hex key thumbscrew or any other 5/64" hex key or balldriver. The second angular degree of freedom is achieved by rotation of an intermediate saddle. This saddle connects the optic holder to the cage assembly and is free to rotate ±30°. The optic is secured against the back lip of the SM1 (1.035"-40) center tapped region using the included SM1RR Retaining Ring.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
KC45D1 Support Documentation
KC45D1Ø1" Gimbal Mirror Mount, 30 mm Cage Compatible, One Retaining Ring Included
$239.96
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Kinematic Mounts for 60 mm Cage Systems


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KC2L Back View
  • Mounts Ø2" (Ø50.8 mm) Optics on the Optical Axis of a 60 mm Cage System
  • Through Holes for ER Cage Rods
  • ±3º Kinematic Tip and Tilt Adjustment
  • Minimum Optic Thickness for the KC2L(/M) Mounts: 0.12" (3.0 mm)
  • Maximum Optic Thickness for the KC2T(/M) Mounts: 0.2" (5.0 mm)
  • Post Mountable via Three #8-32 (M4) Tapped Holes

The KC2L(/M) Kinematic Mount is designed with a smooth, double-bored mounting hole for a Ø2" optic and is complete with a nylon-tipped locking screw for securing the optic. The KC2T(/M) Kinematic Mount has an SM2 (2.035"-40) center tap for mounting optics, includes two SM2RR retaining rings and is compatible with our SM2-series lens tubes systems.

The KC2L(/M) and KC2T(/M) Kinematic Mounts offer three 100 TPI (Threads Per Inch) adjustment screws for smooth, high-resolution movement. Each adjuster is independently locking, and has a collet that can be tightened without causing the position of the adjuster to drift. The rugged mechanical design provides excellent stability when mounted in a cage system or on a post. Both the front and rear plates have been machined with four clearance holes designed for direct compatibility with our 60 mm cage system standards. The rear plate provides locking setscrews to clamp to cage rods for secure positioning. The cage rod holes in the front plate are sufficiently oversized to allow ±3º tip and tilt without interference with the rods.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
KC2L Support Documentation
KC2LNEW!Locking Kinematic Mirror Mount For Ø2" Optics, 8-32 Taps
$224.75
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KC2T Support Documentation
KC2TNEW!Locking SM2-Threaded Kinematic Mirror Mount for Ø2" Optics, 8-32 Taps
$231.75
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+1 Qty Docs Part Number - Metric Price Available
KC2L/M Support Documentation
KC2L/MNEW!Locking Kinematic Mirror Mount for Ø2" Optics, M4 Taps
$224.75
Today
KC2T/M Support Documentation
KC2T/MNEW!Locking SM2-Threaded Kinematic Mirror Mount for Ø2" Optics, M4 Taps
$231.75
Today