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Instant portable bar code reader

  • US 5,187,355 A
  • Filed: 02/24/1992
  • Issued: 02/16/1993
  • Est. Priority Date: 12/28/1981
  • Status: Expired due to Term
First Claim
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1. A portable instant bar code reader system for reading complete lines of bar code elements, said reader comprising:

  • (a) a hand-held bar code reader unit having window means providing a bar code sensing region in front of said window means, said window means being arranged for receiving reflections of light from a complete line of bar code elements in the bar code sensing region,(b) image photodetector means positioned within said hand-held bar code reader unit for sensing light rays reflected through said window means, and operable to generate a bar code image signal in accordance with a complete line of bar code elements in said bar code sensing region, and(c) an optical system within said hand-held bar code reader unit including a light source arrangement which comprises a light source assembly for generating a sheet of light energy for illuminating a complete line of bar code elements in its entirety in said bar code sensing region so as to produce the reflected light rays representing an entire optical bar code image to be sensed simultaneously by said image photodetector means, and(d) said optical system providing a resolution and depth of focus such that a complete line of entire bar code elements having substantial curvature can be received simultaneously for reading by said hand-held bar code reader unit, said optical system also providing bar code reading over a depth range of at least ten millimeters.

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