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Photodetector, a photodector array comprising photodetectors, an object detector comprising the photodetecter array and an object detecting procedure

  • US 5,581,094 A
  • Filed: 09/01/1994
  • Issued: 12/03/1996
  • Est. Priority Date: 11/18/1993
  • Status: Expired due to Fees
First Claim
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1. An object detector that receives a light reflected from an object to determine a position and an image of the object, said object detector comprising:

  • a light-emitting unit that emits a pulse of light having a predetermined wavelength, wherein at least a portion of the pulse of light is reflected from the object;

    a photodetector unit for receiving the reflected light from the object and generating output signals, the reflected light including at least the portion of the pulse of light reflected from the object, wherein the photodetector unit includes a photodetector array comprising a plurality of photodetectors each having photosensitivity variable in a positive range through a negative range, and arranged in a two-dimensional arrangement;

    a control signal supply means for supplying a control signal for controlling the photosensitivity of each photodetector of the photodetector unit;

    a signal detecting means for detecting the output signals of the photodetectors on each line or row of the photodetectors of the photodetector unit; and

    a control means for controlling the adjustment of the time when the light-emitting unit emits light, and controlling one of the time when the control signal supply means supplies a control signal to the photodetectors, and the time when the signal detecting means detects the output signals of the photodetectors on each line or row.

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