Chopper-stabilized absolute distance meter

Details Chopper-stabilized absolute distance meter Chopper-stabilized absolute distance meter

2005-01-25

2005-01-25

Gregory, Bernarr E. (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

Reexamination Certificate

active

06847436

ABSTRACT:
An absolute distance measurement device is provided, including reference and measurement laser signal paths, comprising a laser source providing a laser signal and a chopper assembly, comprising a rotatable surface defining at least one aperture provided through a portion of the rotatable surface; wherein the laser signal is directed to different points on the rotatable surface of the chopper assembly such that as the rotatable surface is rotated, the aperture selectively permits transmission and selectively prevents transmission of each of said at least two laser signal paths.

REFERENCES:
patent: 3619058 (1971-11-01), Hewlett
patent: 3973911 (1976-08-01), VON Smolinski et al.
patent: 4068952 (1978-01-01), Erbert et al.
patent: 4269506 (1981-05-01), Johnson et al.
patent: 4636068 (1987-01-01), Niiho et al.
patent: 4942561 (1990-07-01), Ohishi et al.
patent: 5054911 (1991-10-01), Ohishi et al.
patent: 5886777 (1999-03-01), Hirunuma
patent: 6062190 (2000-05-01), Nakajima
patent: 6356344 (2002-03-01), Ohishi et al.
patent: 6384904 (2002-05-01), Ohishi et al.
PCT Search Report PCT/US 02/11288.

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