Phase diversity ranging sensor

Optics: measuring and testing – Range or remote distance finding – With photodetection

Reexamination Certificate

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Details

C356S004050, C356S004060

Reexamination Certificate

active

07397540

ABSTRACT:
A system to determine the distance to an object includes one or more aberrating elements to introduce aberration into light from the object. Image data is obtained at two different focus conditions, and used to determine the object distance.

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patent: WO 2006082544 (2006-08-01), None
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Mats Lofdahl, “A Predictor Approach to Closed-Loop Phase-Diversity Wavefront Sensing”, Royal Swedish Academy of Sciences, SPIE 4013-51, Germany, Mar. 2000 (pp. 1-12).
Stuart M. Jeffries, “Sensing Wave-front amplitude and phase with phase diversity”, Applied Optics, vol. 41, No. 11, Apr. 10, 2002 (pp. 2095-2102).
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