公开(公告)号：US3644889A

公开(公告)日：1972-02-22

申请号：US3644889D

申请日：1970-04-23

Applicant: THOMSON CSF

Inventor： SKENDEROFF CLAUDE ,  BOURON JEAN-PIERRE

IPC: G06E3/00 ,  G06K9/74 ,  G06K9/82 ,  G06K9/08

CPC classification number: G06E3/003 ,  G06K9/74 ,  G06K9/82

Abstract: An optical multiplier, such as a fly''s eye lens projects a symbol to be recognized on a plurality of masks, which are subdivided into strips, each strip of the mask having predetermined transparencies and transmitting elementary sections of the image to associated photoelectric transducers which are connected to logic circuits identifying those of the transducers associated with any one strip which, conjointly, have an extreme (e.g., maximum) output signal. Preferably, optical or electrical weighting elements are interposed to optimize the outputs of the transducers associated with the various masks.