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Rangefinder

  • US 6,441,888 B1
  • Filed: 03/17/2000
  • Issued: 08/27/2002
  • Est. Priority Date: 03/17/1999
  • Status: Expired due to Term
First Claim
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1. A rangefinder comprising:

  • a light source for projecting a set of light patterns onto an object, an intensity ratio of the projected light patterns being monotonously increasing or decreasing on the object at least from place to place;

    a camera for capturing a pair of images of the object by using parts of the projected light patterns, the parts having been reflected from the object; and

    a three-dimensional information generator for generating three-dimensional information of the object from the reflected light images captured by the camera, wherein the three-dimensional information generator includes a light intensity corrector, which corrects intensities of the reflected light images according to correction information representing intensities of the projected light patterns, and generates the three-dimensional using a pair of images that have been by the light intensity corrector.

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