"Microfilm image processing apparatus"

Adjustment module for adjusting a position of a lens of a...

Afocal attachment for projection lens

Analog/digital control arrangement for photographic apparatus

Anti-jam linear leadscrew drive and devices utilizing the drive

Apparatus and related method for correcting slide warpage in a s

Apparatus for regulating the optical characteristics of a projec

Assembling mechanism

Auto-focusing method and projector using the same

Automatic focus adjustment for projector

Automatic focusing device for slide projectors

Automatic focusing projector

Automatic focusing system

Automatic magnification correcting system in a projection optica

Cinewide with autoscope

Color image projection arrangement and method

Compensation device at projectors with exchangeable and vertical

Device for controlling projection lens shift in a projector

Dual lens image rotation system

Dual-magnification rear projection lectern