Distance measuring method and image input device with...

Details Distance measuring method and image input device with... Distance measuring method and image input device with...

2005-08-30

2005-08-30

Gregory, Bernarr E. (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

C356S003130, C356S004010

Reexamination Certificate

active

06937321

ABSTRACT:
A distance measuring technology capable of stably and accurately performing distance measurement of an object without any highly accurate focus control mechanism is provided. A distance measuring apparatus has a mask for restricting light so as to pass through two or more different light passing positions; a lens system for focusing the light passed through the mask; an image taking-in means for taking in images from the light focused by the lens system; and a distance calculating means for calculating a distance from an imaging element to an object using the taken-in images. The mask restricts the light so as to pass through only specified positions.

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U.S. Appl. No. 09/409,223, filed Sep. 30, 1999, Nakashima et al.
Hiura et al., “Depth Measurement by the Multi-Focus Camera,”IEEE Computer Society Conference on Computer Vision and Pattern Recognition Proceedings, pp. 953-959, Jun. 23-25, 1998.

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