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XY Translators for 60 mm Cage Systems
CXY2 and SM2 Lens Tube
Thorlabs offers two options for XY adjustment (orthogonal to the mechanical axis of the cage system) of Ø2" optical components within a 60 mm cage system. All XY positioners are compatible with SM2 (2.035"-40) threading, making it easy to mount lens tube-compatible optomechanical components.
The CXY2 XY Translator provides ±2 mm of travel perpendicular to the optical axis of a 60 mm cage system. The movable carriage is internally SM2 (2.035"-40) threaded and directly accepts Ø2" (Ø50.8 mm) optics up to 0.59" (15.0 mm) thick. The non-rotating center carriage has been designed to offer pure X and Y translation.
The SPT2 Slip Plate Positioner offers ±2 mm of coarse XY travel with manual alignment. It does not use adjusters to position the mounted optic; the plate that supports the optic slips across the fixed plate and can be locked into position.
Cage System Compatibility: Thorlabs offers 16 mm, 30 mm, and 60 mm cage systems designed for Ø1/2", Ø1", and Ø2" optical components, respectively. Additionally we offer two Z-axis translators that are compatible with our 30 mm cage standard. The parts on this page are compatible with our 60 mm cage system and utilize Ø6 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.
The CXY2 XY Translator provides ±2 mm of travel perpendicular to the optical axis in a 60 mm cage system. The moveable carriage is internally SM2 (2.035"-40) threaded and accepts Ø2" optics up to 0.59" (15.0 mm) thick when secured using the included SM2RR retaining ring. Thicker optics can be mounted into an SM2 lens tube, which then may be attached to the front of the translator. The fixed backside is also SM2 threaded to allow SM2 lens tubes to be attached. While the mount features a non-rotating center carriage, the mount does feature horizontal and vertical tick marks to ensure proper alignment of the moveable carriage.
The SPT2 Slip Plate Positioner is designed to provide coarse XY positioning of Ø2" optical components within our 60 mm cage assembly system. The SM2-threaded bore can mount optics up to 0.30" (7.6 mm) thick using two SM2RR retaining rings (included). This design provides manual adjustments of ±2 mm of travel and is best utilized in conjunction with an alignment laser to monitor the centricity. The images below detail how to adjust and lock the SPT2.