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Cage System Adapters


  • Adapters Allow Different Sizes of Cage Systems to be Integrated
  • 8-32 (M4) Tapped Holes for Post Mounting

LCP02

SP05

Cage System Size Adapters Allow
Cage Systems to be Converted
Between 16 mm, 30 mm, and
60 mm Rod Spacings

Application Idea

Related Items


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Cage System Size Adapters
In-Line Cage Plates
Orthogonal Adapters
Drop-In 30 mm to 60 mm

Features

  • Switch Between Cage Sizes with Adapters
  • 16 mm to 30 mm and 30 mm to 60 mm Adapters Available

The SP05(/M) and LCP02(/M) cage adapter plates offer a way to switch between 16 mm and 30 mm cages, and 30 mm and 60 mm cages, respectively. Each cage plate has four through holes for cage rods, which are secured in the plate using 4-40 setscrews. We also offer orthogonal cage system size adapters.

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 accomodate 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. All locking setscrews used in these cage plates are standard 4-40 setscrews, which use a 0.05" hex key.

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 (2.8")
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
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.

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Posted Comments:
Poster:tilman.schmoll
Posted Date:2014-07-24 15:50:42.98
Could you please tell me what the distance between the center of the SM1 hole and the surface of the #8-32 mounting hole is? can the #8-32 mounting hole be used in conjunction with 1" pedestal pillar post? I.e. is there enough surface area between the two arms? Thank you! Tilman
Poster:myanakas
Posted Date:2014-07-25 09:48:41.0
Response from Mike at Thorlabs: Thank you for your feedback. The distance between the center of the SM1 tapped hole and 8-32 mounting hole is 0.8" (20.32 mm). There is not enough surface area around the 8-32 tapped hole for 1" diameter posts. We have updated the website to include this information.
Poster:Javier
Posted Date:2010-06-10 15:17:42.0
Response from Javier at Thorlabs to jc7: we may be able to offer this as a special item. I will contact you with more information.
Poster:jc7
Posted Date:2010-06-10 12:57:34.0
For the 30 mm to 60 mm Cage Plate Adapter (LCP02), is it possible to include a Nylon-Tipped Thumbscrew to fix Ø1" optics instead of SM1 threads? Thanks, James
Poster:apalmentieri
Posted Date:2009-12-15 12:08:16.0
A response from Adam at Thorlabs: If we were to open up the radius on the CP02B to clear the lens tube cover it would still make contact with the middle screw with the use of either an English or metric screw. Unfortunately, we cannot make this change.
Poster:bowen
Posted Date:2009-12-11 17:51:48.0
You make a plastic tube to fit over SM1 lens tubes. That tube does not fit with the CP02B. You should modify the CP02B so there is no interference.

16 mm to 30 mm Cage Adapter


Click to Enlarge
View Imperial Product List
Item #QtyDescription
Imperial Product List
SP05130 mm to 16 mm Cage Adapter Plate
SRM05116 mm Cage Rotation Mount for Ø1/2" Optics
SR24Compact Cage Assembly Rod, 2" Long, Ø4 mm
ER1.5-P41Cage Assembly Rod, 1.5" Long, Ø6 mm, 4 Pack
SM05L051SM05 Lens Tube, 0.50" Thread Depth, One Retaining Ring Included
CP02T1SM1-Threaded 30 mm Cage Plate, 0.50" Thick, 2 Retaining Rings, 8-32 Tap
SM1D12D1Ring-Actuated SM1 Iris Diaphragm
View Metric Product List
Item #QtyDescription
Metric Product List
SP05/M130 mm to 16 mm Cage Adapter Plate, Metric
SRM05116 mm Cage Rotation Mount for Ø0.5" Optics
SR24Compact Cage Assembly Rod, 2" Long, Ø4 mm
ER1.5-P41Cage Assembly Rod, 1.5" Long, Ø6 mm, 4 Pack
SM05L051SM05 Lens Tube, 0.50" Thread Depth, One Retaining Ring Included
CP02T/M1SM1-Threaded 30 mm Cage Plate, 0.50" Thick, 2 Retaining Rings, M4 Tap
SM1D12D1Ring-Actuated SM1 Iris Diaphragm
  • Couples 16 mm to 30 mm Cage Systems
  • Accepts ER and SR Series Rods
  • Eight 4-40 Locking Screws
  • SM05 Series (0.535"-40) Internal Thread

The SP05(/M) cage plate provides a convenient means for coupling 16 mm and 30 mm cage assemblies (see image to the right). The Ø4 mm SR rod and Ø6 mm ER rod holes are each accompanied by a side-located locking 4-40 setscrew, which can be secured using a 0.05" hex key. The SP05(/M) also has an 8-32 (M4) tapped hole for post-mounting and a centered SM05 (0.535"-40) tapped bore (SM05RR retaining rings sold separately). This cage plate offers tight tolerances on the cage rod holes to ensure that both the 30 mm and 16 mm cage segments are centered around the central SM05 bore. 

Additionally, two of these cage plates can be used to straddle a 16 mm cage subassembly in such a way that the entire assembly [SP05(/M), 16 mm subsystem, and SP05(/M)] can slide along the 30 mm cage rods as a single optomechanical unit.

For users who do not need the tight tolerances necessary to accommodate both 16 mm and 30 mm cage rods, Thorlabs offers a 30 mm cage plate, the CP11, for mounting a Ø1/2" optic or lens tube.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
SP05 Support Documentation
SP0530 mm to 16 mm Cage Adapter Plate
$31.75
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
SP05/M Support Documentation
SP05/M30 mm to 16 mm Cage Adapter Plate, Metric
$31.75
Today

30 mm to 60 mm Cage Plate Adapter

  • Couples 30 mm and 60 mm Cage Systems
  • Centered SM1 (1.035"-40) Tapped Hole Directly Accepts Ø1" Optics up to 0.35" (9 mm) Thick
  • 8-32 (M4) Tapped Hole for Mounting to Ø1/2" Posts

The LCP02(/M) Cage Plate provides a convenient means for coupling 30 mm and 60 mm cage assemblies via our Ø6 mm ER Cage Rods. The centered SM1 (1.035"-40) tapped hole directly accepts optics up to 0.35" (9 mm) thick (SM1RR retaining rings sold separately). Each cage rod through hole is accompanied by a side-located locking 4-40 setscrew, which can be secured using a 0.05" (1.3mm) hex key. The LCP02(/M) also has an 8-32 (M4) tapped hole for Ø1/2" post mounting. The surface with the 8-32 (M4) tap is not wide enough to support Ø1" posts.

Additionally, two of these cage plates can be used to straddle a 30 mm cage subassembly in such a way that the entire assembly [LCP02(/M), 30 mm subsystem, and LCP02(/M)] can slide along the 60 mm cage rods as a single optomechanical unit. A 16 mm cage assembly can also be easily integrated by utilizing the SP05 cage plate adapter (sold above).

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
LCP02 Support Documentation
LCP0230 mm to 60 mm Cage Plate Adapter, 8-32 Tap
$39.00
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
LCP02/M Support Documentation
LCP02/MCustomer Inspired!30 mm to 60 mm Cage Plate Adapter, M4 Tap
$39.00
Today
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