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US 8,947,509 B2Granted
Structured light system
AssigneeAlces Technology, Inc.
InventorsDavid M Bloom, Matthew A Leone
Life of this patent
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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.
Claims4
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;
- and,
- a camera that demodulates the spatial phase of the pattern by sampling the pattern synchronously with the reference frequency,
- wherein the camera has a frame rate and a sampling rate, the sampling rate is the same as the reference frequency, and the reference frequency is three times greater than the frame rate.
3 more elements
Dependencies are inferred from the claim text.