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Range-finder apparatus, methods, and applications

  • US 10,281,262 B2
  • Filed: 08/19/2016
  • Issued: 05/07/2019
  • Est. Priority Date: 08/31/2015
  • Status: Active Grant
First Claim
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1. An optical scanning device, comprising:

  • an objective lens having an optical axis;

    a controllable pixelated light modulator having a plurality of individual pixel elements and a lateral dimension, disposed along the optical axis on an image side of the objective lens, wherein a direct field of view of the optical scanning device is set by said lateral dimension;

    a pair of reflective surfaces disposed in opposed tangential planes on opposite sides of the optical axis between the objective lens and the pixelated light modulator and tilted with respect to a sagittal plane, such that a wide angle point on an object side of the objective lens is mapped to a respective pixel of the pixelated light modulator;

    a controller coupled to the pixelated light modulator in a manner to selectively control any of a plurality of selected arrangements of the pixel elements so as to map the point on the object side of the objective lens to a single point on an image side of the objective lens; and

    a detector disposed so as to produce a signal representative of the intensity of light emitted from one or more points in front of the objective lens as the controller selectively controls the pixelated light modulator.

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