A package of 20 colored glass filters for use in optical or laser applications. There are several different filters of different shapes and colors similiar to photo. Sizes range from approximately 5/8...

This hardware was used to project full color digital images by combining images from three different colored images of red, blue, and green. A very clever (and lovely looking) dichroic prism assembly ...

E-Lucky company is the maker of this four element lens, it's their part number 10981. This is a 40mm screw mount type lens (may fit some Olympus cameras?) and has a 77mm focal length. It is adjustable...

Removed from assembly. Double concave lens, approx. 7" focal length. 2-5/16" OD.

Clear 5/16" diameter lens was used at the end of a fiberoptic cable of approximately 2.5mm OD (1/10") and used to disperse or gather light.

These lenses were probably destined for 16mm microfilm viewers. The focal length is about 35mm and the speed is f5.6 The housing is of aluminum, the two element lens measures 1.25" long x 1" diameter...

These 45 degree prism housings accept a standard microscope eyepiece and have 30mm threads to screw into a microscope or whatever body. They are new and made in Japan by folks unknown and are packed i...

Large Copy Lens by Minolta. These beautiful copy lenses measure 3.5" dia and 4" long. There are four holes in the front flange for mounting and a groove in the rear collar for a clamp to hold the lens...

These were used on Mitsubishi’s visual telephone display. Package includes a 6 X close-up lens with 32 x 40mm (1.25 x 1.57”) image area, with a focal distance of 73mm (2.87”), and a .4 (point four) ...

21mm (5/8") dia. Focal length 25mm (approx. 1"). Glass.