Control device for an optical sensor

  • US 6,040,669 A
  • Filed: 06/12/1998
  • Issued: 03/21/2000
  • Est. Priority Date: 10/22/1996
  • Status: Expired due to Term
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First Claim
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1. A control device for an optical sensor, the optical sensor generating a measuring signal and including an optical transmitter, the control device comprising:

  • an arrangement switching a power of the optical transmitter between a full power and a reduced power as a function of the measuring signal,wherein, when a pane is dry and only after a predetermined time period, the optical transmitter operates at the reduced power as a function of the measuring signal.

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