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Fixed Compact Platform Mounts


  • Mount Beamsplitter Cubes and Right-Angle Prisms
  • Mount Cylindrical Components to Ø1/2" Optical Posts

V-Groove and Prism Clamp System

PCM Post Clamp and PCMV/PCMP Base Adapters Sold Separately

Application Idea

GRIN Fiber Collimator Mounted Using the PCM Post Clamp and PCMV V-Groove Base

BSH1

Mounts 1" Beamsplitters or Right-Angle Prisms

 

BSH2

Mounts 2" Beamsplitters or Right-Angle Prisms

BSH10

Mounts 10 mm Beamsplitters or
Right-Angle Prisms

Related Items


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Click to Enlarge

Right-Angle Prism Mounted Using the BSH1 Prism Mount

Features

  • Prism Platform Mounts for Beamsplitter Cubes and Right-Angle Prisms
  • PCM Clamp with PCMP Flat Adapter Holds Prisms or Beamsplitter Cubes
    • Maximum Optic Height: 0.82" (20.8 mm)
  • PCM Clamp with PCMV V-Groove Adapter Holds Cylindrical Objects
    • Minimum Object Diameter: 0.02" (0.6 mm)
    • Maximum Object Diameter: 0.52" (13.2 mm)

Thorlabs offers compact platform mounts for prisms, beamsplitter cubes, and cylindrical objects. Our BSH platform mounts are compatible beamsplitter cubesright-angle prisms, and prism mirrors and feature a bottom-located tap for post mounting. For additional mounting options, the BSH1(/M) and the BSH2(/M) feature two counterbores for mounting directly to a breadboard. The PCM Clamp for Ø1/2" posts is used in conjunction with either the PCMP Flat Base for prisms or the PCMV V-Groove Base for cylindrical objects.


Posted Comments:
baldwidp  (posted 2016-11-30 17:09:36.01)
Make a 2" version to hold a 2" beamsplitter cube.
tfrisch  (posted 2016-12-05 10:00:44.0)
Hello, thank you for contacting Thorlabs. I have posted this in our internal engineering forum.
user  (posted 2016-09-20 13:15:19.797)
Please make a version of the BSH1 that can hold 1/2 inch beamsplitters.
jlow  (posted 2016-09-21 04:50:32.0)
Response from Jeremy at Thorlabs: Thank you very much for your suggestions. We will look into making this as part of our stock item.
cbrideau  (posted 2015-10-22 14:03:41.803)
A version of this prism holder that replaces the front plate on a KMS kinematic mount would make for an excellent tip/tilt stage for the prism.
besembeson  (posted 2015-10-28 10:02:01.0)
Response from Bweh at Thorlabs USA: Thanks for the feedback. This could be good for a more compact version of the KM100B and KM100PM (http://www.thorlabs.us/newgrouppage9.cfm?objectgroup_id=1811) that are designed for such purposes. We will review this.

Platform Mounts for Beamsplitter Cubes and Right-Angle Prisms


Click to Enlarge

View Imperial Product List
Item #QtyDescription
BSH11Platform Mount for 1" or 25.0 mm Beamsplitters and Right-Angle Prisms, 8-32 Tap
PBS25411" Polarizing Beamsplitter Cube, 1200 - 1600 nm
AE8E25E2Dual Threaded Adapter with Internal 8-32 Threads and External 1/4"-20 Threads
View Metric Product List
Item #QtyDescription
BSH1/M1Platform Mount for 1" or 25.0 mm Beamsplitters and Right-Angle Prisms, M4 Tap
PBS25411" Polarizing Beamsplitter Cube, 1200 - 1600 nm
AE4M6M2Dual Threaded Adapter with Internal M4 x 0.7 Threads and External M6 x 1.0 Threads

BSH1 Platform Used to Mount 1" Beamsplitter Cube to a Breadboard

Click to Enlarge

Each mount except the BSH10(/M) is engraved with an area for labeling and the item # for easy identification.
  • Mount 10 mm, 20 mm, 1" (25.0 mm), or 2" (50.0 mm) Beamsplitter Cubes and Right-Angle Prisms 
  • Compact, Low-Profile Design with Secure Clamping
  • Tapped for Post Mounting
  • BSH1(/M) and BSH2(/M) Feature Counterbores for Breadboard Mounting

Thorlabs' Prism Platform Mounts are designed to hold polarizing and non-polarizing beamsplitter cubes as well as with right-angle prisms and prism mirrors. The BSH10(/M) mount features a flexure clamping mechanism that accepts 10 mm +0.0 mm / -0.2 mm cubes and 10 mm ± 0.1 mm right angle prisms. The BSH20(/M), BSH1, and BSH2 accept 20 mm, 1”, or 2” cubes or right-angle prisms, respectively. They feature a side-mounted clamping mechanism that uses rare-earth magnets and dowel pins for opening and alignment. Both types of clamping mechanisms can be actuated using a 5/64" (2.0 mm) hex key. 

The BSH10(/M), has a 4-40 (M3) tap for compatibility with our Mini-Series Posts and our Ø12 mm Pedestal Posts with 4-40 (M3) Setscrews. A torque hole in the mount allows a 5/64" balldriver or hex key to pass through and provide extra leverage when tightening the BSH10(/M) to the top of a post. 

The BSH20(/M), BSH1(/M), and BSH2(/M) offer an 8-32 (M4) tap for compatibility with our Ø1/2" or Ø1" posts with 8-32 (M4) studs. The BSH1(/M) and BSH2(/M) feature two #8 (M4) or 1/4" (M6) counterbores, respectively, for mounting to an optical table or breadboard. The BSH1(/M) is directly compatible with our Mini-Series breadboards with 8-32 (M4) tapped holes. The AE8E25E (AE4M6M) thread adapter allows the BSH1(/M) to be mounted onto breadboards that have 1/4"-20 (M6) tapped holes. The BSH2(/M) is directly compatible with both our Mini-Series and standard breadboards with 1/4"-20 (M6) tapped holes. Either platform mount can also be mounted using two optical posts to align the prism's optical axis over the breadboard taps.

Please note: To reduce the risk of damage and stress-induced birefringance, we recommend applying as little force as possible when mounting the prism. To help provide guidance on the amount of torque needed, a UV Fused Silica right-angle prism and N-BK7 beamsplitter cube were both tested. For the BSH10, we would not recommend exceeding a mounting torque of 1 lb-in (0.11 N•m) for right-angle prisms or 2.5 lb-in (0.28 N•m) for beamsplitter cubes. For the larger mounts, we would not recommend exceeding a mounting torque of 1.5 lb-in (0.17 N•m) for right-angle prisms or 5.0 lb-in (0.56 N•m) for beamsplitter cubes. We recommend using the TD24 Torque Driver with a 5/64" (2.0 mm) hex driver bit.

Item # Compatible Optics Mounting Holes Clamping Lip Heighta Clamping Screw Hex
BSH10(/M) 10.0 mm +0.0 mm / -0.2 mm Cubes and 10 mm ± 0.1 mm Right-Angle Prisms One 4-40 (M3) Tap 0.063" (1.6 mm) 5/64" (2.0 mm)
BSH20(/M) 20.0 mm Cubes and Right-Angle Prisms One 8-32 (M4) Tap 0.075" (1.9 mm)
BSH1(/M) 1.00" or 25.0 mm Cubes and Right-Angle Prisms One 8-32 (M4) Tap
Two #8 (M4) Counterbores
0.075" (1.9 mm)
BSH2(/M) 2.00" or 50.0 mm Cubes and Right-Angle Prisms One 8-32 (M4) Tap
Two #1/4 (M6) Counterbores
0.1" (2.5 mm)
  • Amount of Optic Obscured by Mount
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
BSH10 Support Documentation
BSH10NEW!Platform Mount for 10 mm Beamsplitters and Right-Angle Prisms, 4-40 Tap
$40.00
Today
BSH20 Support Documentation
BSH20Platform Mount for 20 mm Beamsplitters and Right-Angle Prisms, 8-32 Tap
$60.00
Today
BSH1 Support Documentation
BSH1Platform Mount for 1" or 25.0 mm Beamsplitters and Right-Angle Prisms, 8-32 Tap
$46.92
Today
BSH2 Support Documentation
BSH2Platform Mount for 2" or 50.0 mm Beamsplitters and Right-Angle Prisms, 8-32 Tap
$65.00
Today
+1 Qty Docs Part Number - Metric Price Available
BSH10/M Support Documentation
BSH10/MNEW!Platform Mount for 10 mm Beamsplitters and Right-Angle Prisms, M3 Tap
$40.00
Today
BSH20/M Support Documentation
BSH20/MPlatform Mount for 20 mm Beamsplitters and Right-Angle Prisms, M4 Tap
$60.00
Today
BSH1/M Support Documentation
BSH1/MPlatform Mount for 1" or 25.0 mm Beamsplitters and Right-Angle Prisms, M4 Tap
$46.92
Today
BSH2/M Support Documentation
BSH2/MPlatform Mount for 2" or 50.0 mm Beamsplitters and Right-Angle Prisms, M4 Tap
$65.00
Today

Compact V-Groove and Platform Mount for Prisms and Cylindrical Objects


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View Imperial Product List
Item #QtyDescription
PCM1Post Clamp Mount for Ø1/2" (12.7 mm) Posts (Base Adapter Sold Separately)
PCMP1Flat Base Adapter for PCM(/M) Mount, 1/4"-20 Threaded Stud
TR41Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 4"
PH41Ø1/2" Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L = 4"
PS9911Dove Prism, A = 10 mm, N-BK7, Uncoated
View Metric Product List
Item #QtyDescription
PCM/M1Post Clamp Mount for Ø1/2" (12.7 mm) Posts (Base Adapter Sold Separately)
PCMP/M1Flat Base Adapter for PCM(/M) Mount, M6 Threaded Stud
TR100/M1Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 100 mm
PH100/M1Ø12.7 mm Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L=100 mm
PS9911Dove Prism, A = 10 mm, N-BK7, Uncoated
PCM Clamp and PCMP Base Used to Mount a Prism
  • Mount Prisms or Cylindrical Objects to 1/4"-20 (M6) End of our Ø1/2" Optical Posts
  • PCM(/M) Ø1/2" Post Clamp Secures Objects Mounted on Base Adapters
  • PCMP(/M) Flat Adapter Holds Prisms or Beamsplitter Cubes
    • Maximum Optic Height: 0.82" (20.8 mm)
  • PCMV(/M) V-Groove Adapter Holds Cylindrical Objects
    • Minimum Object Diameter: 0.02" (0.6 mm)
    • Maximum Object Diameter: 0.52" (13.2 mm)

Thorlabs' Compact V-Groove and Platform Mount is ideal for mounting prisms up to 0.82" (20.8 mm) tall or cylindrical objects from 0.02" (0.6 mm) to 0.52" (13.2 mm) in diameter onto a Ø1/2" Optical Post. Its thin 0.65" (16.5 mm) profile allows the mount to easily fit into a space-constrained setup, where a larger mount, such as the KM100B Kinematic Platform Mount, could not. Please note that a complete post clamp mount will require a PCM(/M) Ø1/2" Post Clamp and either a PCMP(/M) Flat or PCMV(/M) V-Groove Base Adapter, all of which are sold separately.

The PCMP(/M) and PCMV(/M) Base Adapters thread onto the 1/4"-20 (M6) end of a Ø1/2" post to provide a stable mounting surface for prisms or cylindrical objects, respectively. To secure the mounted component, the PCM(/M) Post Clamp fits over the post and includes a PM3 or PM3/M Clamping Arm with nylon-tipped setscrew that can be adjusted using a 5/64" (2 mm) hex key. The post clamp is locked in place on the Ø1/2" post using a side-located thumbscrew that can also be secured using a 3/16" (5 mm) hex key. See the photo to the right for a mounting example.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
PCM Support Documentation
PCMPost Clamp Mount for Ø1/2" (12.7 mm) Posts (Base Adapter Sold Separately)
$39.02
Today
PCMP Support Documentation
PCMPFlat Base Adapter for PCM(/M) Mount, 1/4"-20 Threaded Stud
$16.73
Today
PCMV Support Documentation
PCMVV-Groove Base Adapter for PCM(/M) Mount, 1/4"-20 Threaded Stud
$16.73
Today
+1 Qty Docs Part Number - Metric Price Available
PCM/M Support Documentation
PCM/MPost Clamp Mount for Ø1/2" (12.7 mm) Posts (Base Adapter Sold Separately)
$39.02
Today
PCMP/M Support Documentation
PCMP/MFlat Base Adapter for PCM(/M) Mount, M6 Threaded Stud
$16.73
Today
PCMV/M Support Documentation
PCMV/MV-Groove Base Adapter for PCM(/M) Mount, M6 Threaded Stud
$16.73
Today
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