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Optical reader

  • US 4,753,498 A
  • Filed: 03/20/1986
  • Issued: 06/28/1988
  • Est. Priority Date: 03/22/1985
  • Status: Expired due to Fees
First Claim
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1. An optical reader comprising:

  • a light source for emitting an optical beam;

    a first rotary multiface mirror means, including a plurality of reflecting surfaces disposed about the periphery of a rotary center shaft, for reflecting the optical beam emitted from said light source from said reflecting surfaces along a first optical path to scan a surface to be scanned; and

    a second rotary multiface mirror means, including a plurality of reflecting surfaces disposed about the periphery of a rotary center shaft, said reflecting surfaces of said second rotary mirror means being synchronously rotated with said first rotary multiface mirror means, for reflecting an information beam reflected from the surface to be scanned along a second optical path to an optoelectric transforming means;

    said first optical path being distinct from said second optical path to thereby increase the signal to noise ratio of said information beam.

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