- 1-to-1 Micrometer-to-Slit Width Adjustment
- Slit Centered to SM05-Threaded Through Hole
- Slit Size: 0 to 6 mm
- SM05 Threading for Integrating Lens Tubes
The VA100 (formerly VS100) mechanical slit provides precise adjustment of two hardened stainless steel blades centered equally about an SM05-threaded through hole. Each blade is black to reduce unwanted reflections. The unique design of this mount provides a 1-to-1 correlation between the adjustment of the precision micrometer drive and the subsequent change in slit width. The actual slit width ranges from fully closed to 0.25" (6 mm) wide. In the fully closed position, the two blades are touching, however imperfections in the blades and the degree to which the blades are parallel can cause gaps as large as 0.001" (25 µm) in width. The slit opening remains centered on the SM05-threaded aperture as the slit width is varied. The slim overall profile of the mount makes it ideal for use with compact optical assemblies. A bottom-located #8-32 (M4) mounting hole is compatible with our standard 1/2" TR mounting posts. The through hole is SM05 threaded, which is used across an array of Thorlabs products including mounted optics, lens tubes, and our 16 mm cage system.