Light wave distance-measuring system

Details Light wave distance-measuring system Light wave distance-measuring system

2005-05-17

2005-05-17

Tarcza, Thomas H. (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

C356S005090, C356S005100

Reexamination Certificate

active

06894767

ABSTRACT:
A light wave distance-measuring system, comprising a projection optical system having an optical axis of outgoing light and for projecting a measuring light, and a photodetection optical system having an optical axis of a returning light and for receiving a reflection light, wherein the photodetection optical system comprises a light receiving lens for receiving and for converging the reflection light, a light receiving surface where the reflection light enters, and a ring-like perforated multi-focal optical member arranged between the light receiving surface and the light receiving lens and for converging the light to the light receiving surface.

REFERENCES:
patent: 3787118 (1974-01-01), Nowicki et al.
patent: 4843228 (1989-06-01), Nakamura
patent: 5815251 (1998-09-01), Ehbets et al.
patent: 6396571 (2002-05-01), Ohtomo et al.
patent: 6411371 (2002-06-01), Hinderling et al.
patent: 6545749 (2003-04-01), Andersson
patent: 2000-187076 (2000-07-01), None

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