Liquid crystal Projection display
Liquid crystal projector
Liquid crystal projectors
Low-glare overhead projector
Luminaire apparatus and method for generating lumias with a low
Melding mask
Method and devices for displaying images for viewing with...
Multiple function microfiche and film recording and viewing syst
Optical apparatus and projection type display apparatus...
Optical data projection device
Optical device with light path changing element and projection-t
Optical illumination system and projection display apparatus usi
Optical illumination system having improved efficiency and unifo
Optical projection devices including a lens plate integrator
Overhead projection system with lens assembly having concentrica
Overhead projector with achromatic fresnel lens
Prismatic light beam homogenizer for projection displays
Prismatic optical display
Projection apparatus
Projection display and optical integrator