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公开(公告)号:EP0069306A3
公开(公告)日:1986-02-05
申请号:EP82105641
申请日:1982-06-25
发明人: Nishi, Kazuro c/o Mitsubishi Denki K.K. , Kurahashi, Koichiro c/o Mitsubishi Denki K.K. , Hashimoto, Tsutomu c/o Mitsubishi Denki K.K. , Senoo, Toshihiko c/o Mitsubishi Denki K.K. , Yamato, Shinji c/o Mitsubishi Denki K.K.
CPC分类号: G06K7/10871 , G02B26/106
摘要: A hologram scanner includes a rotatable hologram disk (7) on which a plurality of hologram lenses (6) are arranged circumferentially, and a light beam guide mechanism (18,19, 20) for successively shifting irradiation regions of the hologram disk in a predetermined direction with respect to the direction of rotation of the hologram disk, to apply a light beam (2) successively to the hologram lenses on the hologram disk, so that the scanning of a reading window (12) with the light beam (2) is effected in all directions with high density. The hologram scanner is employable as a bar code reading device in a POS or UPC system.