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Cage Plate Adapter for FiberPorts and LaserPorts
The CP08FP(/M) is designed to center a FiberPort or LaserPort inside a 30 mm cage system. It features enhanced cage-rod flexure clamps that are designed to securely hold the cage plate in position for greater stability of the FiberPort system. ER rods can be inserted into the four holes, and secured using the 4-40 cap screws, provided in the adapter as shown in the family image above. In addition, the four 2-56-threaded, 1/4"-long stainless steel socket head screws necessary to secure a FiberPort to the adapter are included. The cage plate contains an internal SM1 (1.035"-40) threading, enabling it to be used with our extensive line of Ø1" lens tubes. A bottom-located 8-32 (M4) tap is provided for post mounting.
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.
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.