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Vehicle vision system with high dynamic range

  • US 20040008410A1
  • Filed: 07/08/2003
  • Published: 01/15/2004
  • Est. Priority Date: 07/09/2002
  • Status: Active Grant
First Claim
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1. A vehicular vision system, comprising:

  • an image sensor comprising a silicon substrate and a first passivation layer material;

    a first antireflective coating between at least a portion of said silicon substrate and said first passivation layer material a second antireflective coating on at least a portion of a side of said first passivation layer material opposite from said silicon substrate;

    said image sensor being at least partially within an encapsulated package;

    a third antireflective coating on at least a portion of said encapsulated package;

    non-silicon features within a pixel region of said image sensor, wherein said at least a portion of said non-silicon features are coated with a light ray absorptive material;

    a light source, said light source is configured to emit light rays in the non-visible spectrum to illuminate objects within a scene external to a controlled vehicle beyond an exterior surface of a windshield, wherein said light source is configured to operate in synchronous relationship with acquisition of images from said image sensor;

    a spectral filter located between said image sensor and the scene, wherein said spectral filter is configured to substantially block light rays other than the predominant spectral band of light rays emitted by said light source; and

    a control system configured to activate said light source and to acquire images from said image sensor.

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