McPherson Filter Wheel Selection

Manually operated, motorized and for Infrared, Visible, Vacuum and Ultra High Vacuum applications. Our filter wheels are useful for mounting samples, pinholes, targets and of course filters.


low profile filter wheel for quantity six one inch diameter filters

Low Profile Manual Filter Wheel

Model 647 in-line design fits slits of McPherson monochromators and uses very little space along optical path. Easy to read, external actuator to change filter in position. 1" (25mm) diameter filters, 6 positions. It is also available as combination mount with a chopper mount for SRS540 (sold separately). Allows user to conveniently install filter wheel and chopper between light source(s) and entrance slit.

vacuum filter wheel for quantity five one inch diameter filters

High Vacuum Filter Wheel

Model 648 provides easy access to filters in vacuume systems. Filters load from the top without removing elements along optical path. Fits on slits of McPherson vacuum monochromators and spectrometers and uses little space (1.38") along optical path. Easy to read, external actuator to change filter in position. 1" (25mm) diameter filters, 5 positions. High vacuum compatible to 10E-6 mbar. ISO NW flange interface and motorization optional.

very high vacuum filter wheel for quantity five one inch diameter filters

Very High Vacuum Filter Wheel

This version of our Model 648 filter wheel features DN100CF (6" DIA) metal seal flanges for easier connection to ultra high vacuum (UHV) experiments and accessories. Not true UHV, Viton o-rings are used in two places. (Inquire for true UHV 10E-10 torr bakeable versions.) Even with the metal seal hardware filters load from the top without removing elements along beam line. Easy to read, external actuator to change filter in position. 1" (25mm) diameter filters, 5 positions. Very high vacuum compatible to 10E-8 mbar. Motorization optional

three position slit wheel, with five slits in each position ... 15 slits!

Multiple Position / Multiple Slit Wheel

Model 943 is a 3 position slit wheel specially designed to work with Model 133 fiber adapter. Each position can have different size slits dictated by your application. The 943 model also has a filter position for wavelength preselection and stray light reduction. This is specially for high resolution optical diagnostics of high temperature plasmas (doppler, stokes techniques).