30 mm Cage System Rotation Mounts for Ø1" or Ø25.0 mm Optics
2° Graduations on Dial, Labeled Every 20°
Accepts Ø1" (Ø25.4 mm) or Ø25.0 mm Optics
CRM1(/M) Maximum Optic Thickness: 0.37" (9.4 mm)
CRM1L(/M) Minimum Optic Thickness: 0.31" (7.9 mm)
8-32 (M4) Tapped Mounting Hole to Mount on TR Series Posts
The CRM1(/M) and CRM1L(/M) have a smooth rotation mechanism that allows for precise positioning of the rotation carriage and the mounts are compatible with the 30 mm cage system.
The CRM1(/M) is designed to mount Ø1" (Ø25.4 mm) optics up to 0.37" (9.4 mm) thick in an SM1-threaded rotation carriage. The optic is secured using the included SM1RR retaining ring (the SPW602 spanner wrench is ideal for tightening this retaining ring). For thicker optics, any of our SM1 series of lens tubes can be threaded into the carriage or the CRM1L can be used instead. The CRM1L(/M) is designed to mount Ø1" (Ø25.4 mm) optics with a minimum thickness of 0.31" (7.9 mm), but unlike the CRM1, the optic is retained in a double-bored rotation carriage using a setscrew.
These mounts are also mechanically compatible with Ø25.0 mm optics, but we only recommend this for applications in which the centration of the optics is not critical.
This animation shows the manual rotation and micrometer engagement of the CRM1P.
The CRM1P(/M) is designed to mount Ø1" (Ø25.4 mm) optics up to 9.4 mm thick in an SM1 threaded rotation carriage. The optic is secured using the included SM1RR retaining ring (the SPW602 spanner wrench is ideal for tightening this retaining ring). For thicker optics, any of our SM1 series of lens tubes can be threaded into the carriage. The smooth rotation mechanism on the CRM1P(/M) can be manually rotated to any position. When the rotation carriage is locked, the high-precision, backlash-free micrometer can then be used to fine tune the position of the rotation carriage over a range ±7°. The animation to the right illustrates how the CRM1P is used. The Vernier scale provides a resolution of 5 arcmin between consecutive marks. As the mount is rotated across the entire Vernier scale, there is a cumulative error of up to ±12.28 arcmin. The CRM1P(/M) is compatible with the 30 mm cage system and the 8-32 (M4) tapped mounting hole allows the rotation mount to be put on a TR series post.
This mount is also mechanically compatible with Ø25.0 mm optics, but we only recommend this for applications in which the centration of the optics is not critical.
The K6A1(/M) is a 0.5" x 1.44" platform designed to be mounted on the rotation ring on the CRM1 series (all versions) of 30 mm cage compatible rotation mounts featured above and the K6X six-axis kinematic mount. The K6A1 comes with a PM3 Small Clamping Arm (K6A1/M comes with PM3/M), hex key, and mounting screws. The K6A1 and K6A1/M have 6-32 and M4 x 0.7 tapped holes, respectively, on the mounting platform to secure the supplied clamping arm.
While using the K6A1(/M), the rotation mount needs to be the terminal element on the cage rods because the cage system is not large enough to allow for the rotation of the platform. If the rotation mount needs to be an interior cage component, consider building a 60 mm cage system frame around the rotation mount using two LCP02 cage plate adapters as shown in the image to the right. This will allow the platform to be rotated freely without interference from the cage rods while preserving the optical axis of the 30 mm cage system.
The SM1PM10 and SM1PM15 prism mounts are designed to accommodate the popular Glan-Taylor and Glan-Laser Polarizing Calcite Prisms. Their SM1 threading makes them compatible with the CRM1(/M) and CRM1P(/M) rotation mounts. The rotating cover allows the user to block the two side ports of the calcite prism when they are not required. To load a prims, unthread the prism cover, insert the prism, and tighten the setscrew. When mounting the SPM1PM10 or SPM1PM15 onto a rotation mount, first thread a retaining ring into the rotation mount to a depth of 3/16" (4.8 mm) and then thread on and tighten the prism mount. This will leave room so that the prism cover can rotate freely.