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US 2014/0210948 A1Published application
Structured light system
AssigneeAlces Technology, Inc.
InventorsDavid M. Bloom, Matthew A. Leone
Life of this patent
Estimating the term…
Abstract
A structured light system based on a fast, linear array light modulator and an anamorphic optical system captures three-dimensional shape information at high rates and has strong resistance to interference from ambient light. A structured light system having a modulated light source offers improved signal to noise ratios. A wand permits single point detection of patterns in structured light systems.
Claims13
A structured light system comprising:
- a light source that generates light;
- a linear array spatial light modulator that modulates light from the light source to create line images, the modulator operating at a reference frequency;
- an anamorphic optical system that spreads the line images into a two-dimensional spatial pattern having variations in only one direction, the pattern being characterized by a spatial phase;
- a photo detector system that demodulates the spatial phase of the pattern one point at a time by sampling the pattern synchronously with the reference frequency, the photo detector system having a sampling rate equal to the reference frequency;
- and,
- a camera that detects the transverse location of the photo detector system in the pattern.
3 more elements
A structured light system comprising:
- a light source that generates light modulated at a modulation frequency;
- a linear array spatial light modulator that modulates light from the light source to create line images;
- an anamorphic optical system that spreads the line images into a two-dimensional spatial pattern having variations in only one direction, the pattern being characterized by a spatial phase;
- a photo detector system that demodulates the spatial phase of the pattern one point at a time by sampling the amplitude of the point at the modulation frequency, the photo detector system having a sampling rate equal to the modulation frequency;
- and,
- a camera that detects the transverse location of the photo detector system in the pattern.
3 more elements
Dependencies are inferred from the claim text.