Optical reader

Optical reader having apparatus for discrimination between dithe

Optical reading apparatus with scanner light intensity control

Optical reading device comprising a focussing detection device

Optical record playback apparatus employing light frequency at w

Optical recording with track drop compensation

Optical rotational position information detecting apparatus

Optical scanner

Optical scanner

Optical scanning apparatus

Optical scanning apparatus for indicia imprinted about a cylindr

Optical scanning device and mirror correction system for use in

Optical scanning device for producing a multiple line scan using

Optical scanning device having dichroic mirror for separating re

Optical scanning system

Optical sheet inspection system

Optical signal play-back device with auto-focussing of a light b

Optical signal projector

Optical simulation apparatus

Optical sound recording system with inversely polarized sound si