Quick-Release Cage Plates for 60 mm Cage System

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LCP90F Quick Release Magnetic Plate Shown in 60 mm Cage System

• 60 mm Cage Compatible Back Plate
• Magnetically Coupled Mounting Carriage
• Accepts Ø2" (50.8 mm) Optics Up to 0.345" (8.7 mm) Thick
• Angular Repeatability Better Than 1 µrad
• Lateral Repeatability Better Than 10 µm in X, Y, and Z
• Back Plate and Mounting Carriage Have Internal SM2 Threading
• One SM2RR Retaining Ring Included

The LCP90F consists of a back plate compatible with the 60 mm cage system and a mounting carriage (front plate) that is magnetically coupled with pairs of rare earth magnets to the back plate. For stability, precision, and repeatability, the mounting carriage contacts the back plate at three points. Each point of contact is a ball bearing on the mounting carriage resting in the groove formed by two parallel steel pins. Since the axes defined by the three sets of pins share a common point of intersection, the system is properly constrained (kinematic). The mounting carriage can be easily inserted or removed from the fully assembled cage system by separating it from the back plate, rotating it sideways, and then extracting it from the cage.

The internal SM2 threading allows components up to 0.345" (8.7 mm) thick to be secured in the mounting carriage with the included SM2RR retaining ring. Components with external SM2 threading (OD = 2.2" (55.9 mm)) cannot extend more than 1" (25.4 mm) beyond the face of the mounting carriage without sacrificing the ability to remove the mounting carriage and component from a closed cage system. The lateral repeatability specification (10 µm) indicates that the X, Y, and Z position of the mount will not vary by more than 10 µm after being removed and replaced, while the 1 µrad angular repeatability refers to the rotation of the optic not changing by more than 1 µrad.

Both the LCP90F and LCP90F-B have four cage rod through holes that are accompanied by a side-located locking 4-40 setscrew, which can be secured using a 0.05" hex key.

• Compatible with 60 mm Cage Systems
• Internal SM2 Threading
• Dovetail Design Provides Smooth Release and Clamping Action
• One-Handed Operation for Removal and Repositioning of an Optic
• Accepts Ø2" (Ø50.8 mm) Optics Up to 0.15" (3.8 mm) Thick
• One SM2RR Retaining Ring Included

The QRC2A cage mount is equipped with a spring-loaded dovetail clamp that secures or releases the cage mount to two of the four ER rods in the cage structure. The cage plate has internal SM2 threading that allows for components up to 0.15" (3.8 mm) thick to be secured with the included SM2RR retaining ring. In addition, components up to 1" (25.4 mm) thick [not including length of threaded stub, OD = 2.2" (55.9 mm)] with external SM1 threading can be attached without sacrificing the ability to remove the cage plate from a closed cage system.

• Quick-Release Cage Mount with Adjustable SM2-Threaded (2.035"-40) Optic Cell
• Compatible with Ø2" and Ø50 mm Mounted and Unmounted Optics Up to
  8 mm Thick
• On- and Off-Axis Alignment for use with Mirrors, Beamsplitters, Filters, and Lenses
• Quick-Release Flexure Clamping Mechanism for Secure Cage Mounting without Requiring Disassembly
• One SM2RR Retaining Ring Included

The LCP360R cage mount allows for 360° of manual rotation of an optic within a 60 mm cage system. Optics up to 8 mm thick can be mounted against a lip at the end of the 11.3 mm (0.45") long SM2-threaded (2.035"-40) optic cell using an included SM2RR retaining ring. The LCP360R mount uses a flexure-style clamp with two 3-48 cap screws (5/64" [2.0 mm] hex) to quickly connect the mount without disassembling the cage. Simply turn the optic perpendicular to the cage system's optical axis and loosen the setscrews enough to allow the flexure mechanism to snap onto the cage rods, as shown in the animation to the right. The LCP360R mount can be attached at any two of the four cage rods for either X- or Y-axis pivoting adjustment. The cage mount can be slid along the cage rods by loosening the setscrews in the flexure clamps.

The optic can be rotated via the knurled knob or via a 5 mm (3/16") hex key, and the optic mount's pivot position can then be locked via a 8-32 (5/64" [2.0 mm] hex) setscrew. An engraved scale indicates the angle of the optic, with tick marks every 5°. Please note that when using with beamsplitters, the clear aperture will be an ellipse with a minor axis of approximately 1" (25.4 mm) when used at a 45° AOI.