- Holds Ø1" Optics up to 0.37" (9.4 mm) Thick
- Post and Rod Mounted for Greater Flexibility
- Detent Force at 0º and 90º, Lockable Across Entire Range
The TRF90 Filter Mount combines versatility in a compact, easy-to-operate design. The TRF90 can be post mounted as an individual unit or ER rod-mounted for stacking filters in a series. Since the depth of the filter mount is 0.5" (13 mm), the minimum length of the ER rod needed when creating a stack of filters is the number of filters mounts being stacked times 0.5" (13 mm). A precision detent mechanism provides holding force at the 0° and 90° positions while a nylon setscrew allows the mount to be locked.
The design of this product integrates a Thorlabs SM1RR Retaining Ring to mount Ø1" Filters. This retaining ring can be easily removed using the SPW602 Spanner Wrench (not included) and replaced with either the SM1LTRR Stress-Free Retaining Ring or the SM1PRR Plastic Retaining Ring. Swapping the retaining ring changes the thickness of the filter that can be held in this mount; the SM1LTRR allows filters up to 0.32" (8.1 mm) thick, while the SM1PRR allows filters up to 0.34" (8.6 mm) thick.
Please note that the threaded hole used to attach the post to the filter mount goes all the way through to the rotation mechanism. Be sure that no more than 0.2" (5 mm) of the screw on top of the post is threaded into the filter mount in order to prevent the binding of the rotation mechanism.