Filters, Windows & Reticles

For the budding diffraction detective in your life, this Spectroburst™ Viewer is a diffraction-viewing lens and light kit from Spectroclick, which, if you ask us, is a pretty good name for a company that makes Spectroburst™ Viewers. Comes...

BAUSCH & LOMB 2"X2" DICHROIC SPECTROMETER FILTER SLIDE 715-719 715-719nm passthrough wavelength Units are in excellent condition, comes in manufacturer's leather pouch. Finish is a bit hazy, but cleans up nice with a gentle but firm rub with a...

BAUSCH & LOMB 2"X2" DICHROIC SPECTROMETER FILTER SLIDE, 44-78-625-629 625-629nm passthrough wavelength Units are in excellent condition, comes in manufacturer's leather pouch. Finish is a bit hazy, but cleans up nice with a gentle but firm rub with a...

Let’s say you’re the teacher’s pet, newly appointed to AV duty, and you want to provide maximum light transmission over the visible spectrum while minimizing infrared rays and heat transmission in the class slide projector (yup,...

One wiseacre assumed we meant any package leaving our shipping room that once had a glass object in it. That is a malicious rumor. . . Ground glass is thin plate glass, the surface of which has been physically ground or...

Al Luebbers, our founder, collected glass. Not glass like you'd find on a knick-knack shelf, but optical glass. Lenses, prisms, reticles and filters, for example. Focus on the filters. Many of his filters came out of military...