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US Patent 8203702 Optical system

Patent 8203702 was granted and assigned to Areté Associates on June, 2012 by the United States Patent and Trademark Office.

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Contents

Is a
Patent
Patent

Patent attributes

Current Assignee
Areté Associates
Areté Associates
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
8203702
Patent Inventor Names
John Hunt0
Andrew E. Paul0
Christopher Hornberg0
David M. Kane0
Kelly Hillman0
Date of Patent
June 19, 2012
Patent Application Number
12287861
Date Filed
October 14, 2008
Patent Citations Received
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US Patent 12092828 Head mounted system with color specific modulation
0
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US Patent 11698443 Multiple pulse, lidar based 3-D imaging
0
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US Patent 11703569 LIDAR data acquisition and control
0
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US Patent 11874377 Multiple pixel scanning LIDAR
0
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US Patent 11885916 Systems and methods for improving detection of a return signal in a light ranging and detection system
0
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US Patent 11906670 Interference mitigation for light detection and ranging
0
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US Patent 11927762 Steerable positioning element
0
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US Patent 11971507 Systems and methods for mitigating optical crosstalk in a light ranging and detection system
0
...
Patent Primary Examiner
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Thomas Tarcza
Patent abstract

Method/system locate external articles using source, detector (PSD), entrance aperture, and magnifying/reducing afocal element—expanding FOR>90°, or refining precision. Between (1) source or detector and (2) aperture, at least one plural-axis-rotatable mirror addresses source/detector throughout FOR. ½- to 15-centimeter mirror enables ˜25 to ˜45 μradian beam divergence. Aperture, afocal element, and mirror(s) define source-detector path. Mirror(s) rotate in refractory- (or air/magnetic-) bearing mount; or mirror array. Auxiliary optics illuminate mirror back, monitoring return to measure (null-balance feedback) angle. To optimize imaging, auxiliary radiation propagates via splitters toward array (paralleling measurement paths), then focusing on imaging detector. Focal quality is developed as a PSF, optimized vs. angle; stored results later recover optima. Mirror drive uses magnet(s) on mirror(s). “Piston” motion yields in-phase wavefronts, so array dimensions set diffraction limit. Also: destructive reply; scaling optimizes acceleration vs. thickness; passive systems.

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