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16 mm Removable Segment Cage Plates
(See Overview Tab for Details)
Thorlabs' 16 mm Removable Cage Segment Plates provide the means to extract a portion of a cage system and replace it with other pre-aligned segments, as illustrated below. These cage plates add versatility to a cage system without disturbing any pre-aligned components while maintaining the rigidity of the cage system. They are equipped with a flexure cam lock to hold the cage plate in position prior to final tightening via the included 3-48 (M2) hex head screws. The cage plates may be mounted on our Mini-Series Posts via a 4-40 (M3) mounting hole.
Assembling a Removable Cage Segment
1. Use an SP06T cage plate to create an interface for a removable cage segment. Two cage rods pass completely through the holes in the cage plate and are secured using the side-located 4-40 setscrews. The remaining cage rods only pass halfway through the flexure clamp as shown below. Do not tighten the flexure mechanism at this time.
2. The removable cage segment is constructed using SP06 or SP06T cage plates. The cage rods in the removable segment need to be long enough so that they fit into the flexure clamp of the outer SP06T cage plates.
3. The completed cage system is shown below. To lock the removable cage segment, tighten all of the flexure mechanisms by tightening the 3-48 (M2) cap head screws. To remove the segment, simply loosen the screws on the flexure mechanisms.
Cage System Compatibility: Thorlabs offers 16 mm, 30 mm and 60 mm cage systems designed for Ø1/2", Ø1" and Ø2" optical components (respectively). The parts on this page are compatible with our 16 mm cage system and utilize Ø4 mm ER cage rods.
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.
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.