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Bar code scanner with diffusion filter and plural linear light source arrays

  • US 4,743,773 A
  • Filed: 08/21/1985
  • Issued: 05/10/1988
  • Est. Priority Date: 08/23/1984
  • Status: Expired due to Term
First Claim
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1. A bar code scanner, housed in a lightproof enclosure at one end of which an opening is formed, said scanner having a scan head for illuminating a bar code facing said opening from a light source disposed inside said opening, a photodetector provided within said enclosure and positioned to receive light reflected from a bar code in front of said opening, said photodetector comprising a CCD image sensor or a plurality of photodetecting elements, said photodetector converting the light into an electrical signal, and means for processing the electrical signal, for thereby identifying said bar code,said opening of the scan head being defined by a straight front central portion of said enclosure and right and left lateral portions, said right and left lateral portions joining the opposite ends, respectively, of the front central portion at an obtuse sweepback angle.

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