Method and apparatus for measuring distances using light

Details Method and apparatus for measuring distances using light Method and apparatus for measuring distances using light

2007-05-22

2007-05-22

Tarcza, Thomas H. (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

C356S004010, C356S028000

Reexamination Certificate

active

10641850

ABSTRACT:
A method and device for measuring a distance to an object with light determines the distance by measuring the relative intensity of light reflected from the object and traveling over two or more paths of differing optical length. Light is emitted by one or more light sources; reflected from a surface of the object; and the reflected light is detected by one or more light detectors. The light detector(s) generate signals based on the intensity of reflected light detected and the signals are utilized to calculate the distance from the device to the object.

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Foley, James D.; Chapter 16 Shading Models “Fundamentals of Interactive Computer Graphics” Copyright 1982; pp. 575-580; Addison-Wesley Publishing Company, Inc.

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