Vertical Mounting Plate

  • Vertically Mount Cage Systems to a Breadboard
  • 16 mm, 30 mm, and 60 mm Cage Compatible Options
  • Mounts to Both Imperial and Metric Breadboards


Vertically Mounts
30 mm Cage Systems


Vertically Mounts 30 mm
and 60 mm Cage Systems

Application Idea

See the Application tab for more ideas.


Vertically Mounts 16 mm
and 30 mm Cage Systems

Related Items

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SM1-Threaded Component Compatible
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The CPVMP mounting plate is compatible with SM1-Threaded Components.


  • Vertically Mount a Cage System to an Optical Table
  • 16 mm, 30 mm, and 60 mm Cage System Compatible Options
  • Counterbored Slots for Mounting to Imperial and Metric Breadboards

These black-anodized aluminum mounting plates allow a cage system to be mounted vertically on an optical table surface. Each plate can be attached to an optical table using counterbored slots or holes, making them compatible with metric and imperial tables and breadboards.

The CPVMP2 and CPVMP2 vertical cage system mounting plates are compatible with either 16 mm and 30 mm (Item # CPVMP2) or 30 mm and 60 mm (Item # CPVMP) cage systems. The CPVMP2 plate has a footprint of 2.63" x 1.60" (66.8 mm x 40.6 mm) and the CPVMP plate has a footprint of 3.60" x 2.80" (91.4 mm x 71.1 mm). These plates use through holes with side-located M4 x 0.7 locking setscrews to attach cage rods for our cage systems. A center-located internally SM05-threaded through hole allows the use of our line of externally SM05-threaded components with the CPVMP2 plate, while the center-located internally SM1-threaded through hole of the CPVMP plate allows the use of our line of externally SM1-threaded components.

We also offer UBP Series Universal Base Plates with options for mounting 16 mm, 30 mm, and 60 mm cage systems. Cage rods are attached to these plates using 4-40 tapped holes. A center-located counterbored slot on each plate allows for rotation and translation of the plate. An array of threaded and counterbored mounting holes are also available for mounting other optical components, such as our optical post assemblies. Please see below for details and an application shot showing a 30 mm cage system vertically mounted using the UBP2 base plate.

Dual-Height Beam Director

The CPVMP Vertical Mounting Plate can be used to construct vertical cage systems on both imperial and metric breadboards. The photo below depicts a dual-height beam director mounted to an optical table with the CPVMP.

Application Suggestion

Item # Quantity Image Description
C4W 2 30 mm Cage Cube  30 mm Cage Cube
B3C 2 Rotatable Platform  Rotatable Platform
(Located on the Back
Side of the Cage Cubes)
FFM1 2 Dichroic Filter Mount  Dichroic Filter Mount
DMLP 2 Dichroic Filter  Dichroic Filter
ER12 4 ER Rod  12" Cage Rod
LCP33 2 30 mm to 60 mm Cage Plate Adapter  30 mm to 60 mm
Cage Plate Adapter
SM1T2 2 Lens Tube Coupler  SM1 (1.035"-40) Coupler
(Used to Attach the C4W
Cage Cube and LCP02
Cage Plate Adapter)
CPVMP 1 Vertical Mounting Plate  Vertical Cage Mount

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:
user  (posted 2022-06-13 12:25:05.703)
Is it possible to build a 60 mm cage system by using two UBP2 units placed side by side instead of CPVMP? Since the delivery of the latter is taking so long, I have to find an alternative. Thanks
jdelia  (posted 2022-06-20 01:59:34.0)
Thank you for contacting Thorlabs. Unfortunately, the 4-40 tapped holes would not line up properly using this configuration. I have contacted you directly regarding alternative solutions.
user  (posted 2013-02-12 10:21:18.547)
Orientation is not adjustable, right? and two rings can not be hidden as does not look like in the picture???
jlow  (posted 2013-02-09 01:17:18.44)
Response from Jeremy at Thorlabs: Both the C4W and LCP02 have internal SM1 thread. Therefore, you just need to screw in the SM1T2 to the C4W and then screw the LCP02 onto the SM1T2.
user  (posted 2013-02-08 17:33:57.573)
How will SM1T2 be used to Attach the C4W Cage Cube and LCP02 Cage Plate Adapter?
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Vertical Mounting Plates for Cage Systems

The CPVMP mounting plate is compatible with
30 mm (left) and 60 mm (right) cage systems.
Item # Cage Sytem
CPVMP2 16 mm Cage Systems
30 mm Cage Systems
CPVMP 30 mm Cage Systems
60 mm Cage Systems
  • Vertically Mount Cage Systems to an Optical Table
  • Centered SM-Threaded Mounting Hole
  • Counterbored Slots for Mounting to Imperial and Metric Breadboards

These vertical mounting plates mount cage systems vertically on an optical table surface. The CPVMP2 plate is compatible with 16 mm and 30 mm cage systems and also offers a central SM05-threaded bore, while the CPVMP plate is compatible with 30 mm and 60 mm cage systems and has a central SM1-threaded bore. Side-located, counterbored slots can be used to securely mount the plate onto either an imperial or metric breadboard.

The SR rods (16 mm cage systems) and ER rods (30 mm and 60 mm cage systems) are held in place by eight side-located M4 x 0.7 setscrews: the four screws for the inner cage rods are inset into the side of each plate, while the four visible setscrews are for the outer cage rods.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
CPVMP2 Support Documentation
CPVMP2Vertical Cage System Mounting Plate for 16 mm and 30 mm Cage Systems
CPVMP Support Documentation
CPVMPVertical Cage System Mounting Plate for 30 mm and 60 mm Cage Systems
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Universal Base Plates

  • Six Variants Offered with a Wide Variety of Mounting Options
  • Central Counterbored Slot Allows for Rotation and Translation
  • Models Available for 16 mm, 30 mm, and 60 mm Cage System Mounting

Our UBP Series Universal Base Plates increase the flexibility of any optical setup by providing mounting holes in virtually any orientation on an optical table or breadboard. This freedom allows users to mount various components or stages in a wide array of orientations outside of what is dictated by the standard 1" (25.0 mm) hole pattern. The counterbores in these plates also allow users to adapt metric components to an imperial optical table and vice versa.

Refer to the table below for specifications and detailed mounting options, including mechanical drawings. Each base plate has a counterbored slot in the center for mounting flexibility at any rotation, as well as counterbored holes at the corners for mounting to compatible breadboards. Cage system compatibility is offered via 4-40 tapped holes with the appropriate spacings.

Item # Counterbored
Slot Size
Mounting Holes
Mounting Holes
Cage Sytem Compatibility
(via 4-40 Threaded Holes)
Dimensions (W x L x H) Mechanical
UBP1 #8
0.38" Long
8-32 (10 Places)
4-40 (8 Places)
#8 (6 Places) 16 mm Cage Systems 2.00" x 2.00" x 0.38"
8.8 mm Long
M4 x 0.7 (10 Places)
M3 x 0.5 (4 Places)
4-40 (4 Places)
M4 (6 Places) 50.0 mm x 50.0 mm x 9.5 mm
UBP2 1/4"
1.25" Long
1/4"-20 (6 Places)
8-32 (16 Places)
4-40 (4 Places)
1/4" (4 Places)
#8 (4 Places)
30 mm Cage Systems 2.50" x 2.50" x 0.38"
31.8 mm Long
M6 x 1.0 (6 Places)
M4 x 0.7 (16 Places)
4-40 (4 Places)
M6 (4 Places)
M4 (4 Places)
65.0 mm x 65.0 mm x 10.0 mm
UBP3 1/4"
1.25" Long
1/4"-20 (24 Places)
8-32 (24 Places)
6-32 (6 Places)
4-40 (8 Places)
1/4" (4 Places)
#8 (4 Places)
30 mm Cage Systems
60 mm Cage Systems
3.50" x 3.50" x 0.38"
29.8 mm Long
M6 x 1.0 (24 Places)
M4 x 0.7 (30 Places)
4-40 (8 Places)
M6 (4 Places)
M4 (4 Places)
90.0 mm x 90.0 mm x 10.0 mm
Universal Base Plate Application
Click to Enlarge

The UBP2 plate can be used to vertically mount a 30 mm cage system and the centrally located slot allows mounting of components outside of the standard hole pattern.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
UBP1 Support Documentation
UBP1Universal Base Plate, 2" x 2" x 0.38", Imperial
UBP2 Support Documentation
UBP2Customer Inspired! Universal Base Plate, 2.5" x 2.5" x 0.38", Imperial
UBP3 Support Documentation
UBP3Universal Base Plate, 3.5" x 3.5" x 0.38", Imperial
+1 Qty Docs Part Number - Metric Price Available
UBP1/M Support Documentation
UBP1/MUniversal Base Plate, 50 mm x 50 mm x 9.5 mm, Metric
UBP2/M Support Documentation
UBP2/MCustomer Inspired! Universal Base Plate, 65 mm x 65 mm x 10 mm, Metric
UBP3/M Support Documentation
UBP3/MUniversal Base Plate, 90 mm x 90 mm x 10 mm, Metric