公开(公告)号：US3902048A

公开(公告)日：1975-08-26

申请号：US48747374

申请日：1974-07-11

Applicant: IBM

Inventor： FLEISCHER JOHN MARTIN ,  MCMURTRY DAVID HARWOOD

IPC: G02B26/10 ,  G02B26/12 ,  G06K7/10 ,  G08C9/06

CPC classification number: G06K7/10871 ,  G02B26/125

Abstract: An omnidirectional optomechanical system is arranged for scanning bar coded labels passing a rectangular scanning window with a plurality of interlaced scans in a plurality of differing directions whereby the labels are completely scanned irrespective of orientation. The interlaced and plural directive scanning rays are generated by directing a beam of light, from a laser or like light source, onto a rotating multi-faceted mirror for deflecting the light beam into a mirror tunnel which is positioned at a predetermined angle at which there is further deflection of the light beam within the mirror tunnel in a number of laterally displaced and crossed scanning segments as appearing at the scanning window located at the end of the tunnel. Alternately, the mirror tunnel and the rotating mirror serve in the sensing of the label under uniform overall illumination.