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RECURSIVE-REFLECTIVE PHOTOELECTRIC SENSOR

  • US 20080180667A1
  • Filed: 10/17/2007
  • Published: 07/31/2008
  • Est. Priority Date: 10/30/2006
  • Status: Active Grant
First Claim
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1. A recursive-reflective photoelectric sensor comprising:

  • a sensor main body including a light projecting part that projects first circularly polarized light and a light receiving part that selectively receives, when a mixture of the first circularly polarized light and second circularly polarized light which is differently polarized from said first circularly polarized light is incident thereto, said second circularly polarized light; and

    a recursive reflecting part that reflects said first circularly polarized light by converting into reflected light that includes said second circularly polarized light.

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