Self reference type distance measuring method and distance...

Details Self reference type distance measuring method and distance... Self reference type distance measuring method and distance...

2006-08-08

2006-08-08

Buczinski, Stephen C. (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

C327S072000, C342S135000, C368S113000

Reexamination Certificate

active

07088433

ABSTRACT:
A distance measuring apparatus measure the distance to a target by measuring the time required for an emitted beam of light to go to and return from the target. The light receiving section of the apparatus converts the received light into an electric signal. The clamp/inversion section of the apparatus clamps and inverts the output of the light receiving section. The comparing section of the apparatus compares the output of the light receiving section and the output of the clamp/inversion section. The determining section of the apparatus identifies the time of receiving the light on the basis of the outcome of the operation of the comparing section.

REFERENCES:
patent: 4849644 (1989-07-01), Mira et al.
patent: 5374860 (1994-12-01), Llewellyn
patent: 5726742 (1998-03-01), Nourrcier
patent: 5852491 (1998-12-01), Kato

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