Vehicle rain sensor using imaging sensor

  • US 6,320,176 B1
  • Filed: 06/22/2000
  • Issued: 11/20/2001
  • Est. Priority Date: 02/26/1993
  • Status: Expired due to Fees
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First Claim
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1. A vehicular rain sensor which senses precipitation at a vehicle window, said vehicular sensor comprising:

  • an imaging array sensor directed at the vehicle window from inside the vehicle, said imaging array sensor comprising a camera device capable of imaging precipitation at a surface of the vehicle window, said camera imaging precipitation in response to ambient light present at the window; and

    a control which responds to an output of said imaging array sensor in order to indicate precipitation at a surface of the window.

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