Optical spatial frequency filter
Optical surveillance assembly and camera
Optical system for camera with a viewfinder
Optical system for color television camera
Optical system for electro-optical scanner
Optical system for flying spot scanning apparatus
Optical system for multiple imaging a linear object
Optical system for projection television apparatus
Optical system for recording and reading an information on a tap
Optical system for reflective mode video playback apparatus
Optical system for rotating mirror line scanning apparatus
Optical video playback apparatus with tracking control and TBC
Optical videodisc pickup arm with moving coil drive means
Optical videodisc read unit with tracking and focussing wobblers
Optical videodisc with variable width tracks
Optical viewing device and system including same
Optical viewing port assembly for a miniature inspection TV came
Optical waveguide display system
Optical-diffusion correcting device for a television camera tube
Optimal image-quality selection apparatus