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Control system for automotive vehicle headlamps and other vehicle equipment

  • US 5,998,929 A
  • Filed: 08/22/1997
  • Issued: 12/07/1999
  • Est. Priority Date: 04/08/1994
  • Status: Expired due to Term
First Claim
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1. A control system automatically controlling the energization and de-energization of electrically energizable headlamps on an automotive vehicle, said control system comprising, in combination, means sensing the relative spectral intensities of the skylight levels of a broad area of the sky, said sensing means including means taking at least two skylight readings with different color responses and measuring the balance between a color component which is weighted towards the short wavelength part of the color spectrum relative to another differently weighted color component to differentiate between a cloudy sky and a blue sky, and means in said control system effective to energize and de-energize said headlamps as a function of the measured balance.

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