Imaging system for vehicle

  • US 10,003,755 B2
  • Filed: 12/08/2014
  • Issued: 06/19/2018
  • Est. Priority Date: 10/04/2007
  • Status: Active Grant
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First Claim
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1. An imaging system suitable for use in a vehicle, said imaging system comprising:

  • an imaging sensor comprising a two-dimensional array of photosensing pixels, said two-dimensional array comprising a plurality of sub-arrays, each consisting of four photosensing pixels arranged in two rows and two columns, wherein each of said sub-arrays comprises a first photosensing pixel, a second photosensing pixel, a third photosensing pixel and a fourth photosensing pixel;

    wherein spectral filtering is disposed at said first photosensing pixel whereby said first photosensing pixel primarily senses red visible light;

    wherein spectral filtering is disposed at said second photosensing pixel whereby said second photosensing primarily senses blue visible light;

    wherein spectral filtering is disposed at said third photosensing pixel whereby said third photosensing primarily senses green visible light;

    wherein spectral filtering is disposed at said fourth photosensing pixel whereby said fourth photosensing primarily senses infrared radiation;

    wherein said imaging sensor is disposed at a vehicle equipped with said imaging system and wherein, with said imaging sensor disposed at the equipped vehicle, said imaging sensor has a field of view forward of the equipped vehicle;

    an image processor operable for processing image data captured by said imaging sensor;

    wherein said image data comprises an output of said first photosensing pixel of each sub-array, an output of said second photosensing pixel of each sub-array, an output of said third photosensing pixel of each sub-array and an output of said fourth photosensing pixel of each sub-array;

    wherein said imaging system is associated with (i) a lane departure warning system of the equipped vehicle, (ii) an object detection system of the equipped vehicle and (iii) a night vision system of the equipped vehicle;

    an infrared illumination source disposed at the equipped vehicle and operable to emit at least near infrared illumination to illuminate forward of the equipped vehicle to enhance nighttime viewing by said imaging sensor, and wherein said infrared illumination source, when activated, illuminates at least a portion of said field of view of said imaging sensor with infrared illumination;

    wherein the outputs of said first, second and third photosensing pixels of sub-arrays are processed for at least one of (i) the lane departure warning system of the equipped vehicle and (ii) the object detection system of the equipped vehicle; and

    wherein the output of at least said fourth photosensing pixel of sub-arrays is processed for the night vision system of the equipped vehicle.

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