Optical tilt monitoring apparatus

Optics: measuring and testing – Position or displacement

Reexamination Certificate

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Details

C356S237200, C356S237600, C356S622000

Reexamination Certificate

active

07733506

ABSTRACT:
An optical arrangement includes a position sensitive optical detector, a collimated optical source, and a processor configured to monitor the inclination of an object. The collimated optical source is configured to transmit a collimated beam towards the object. The position sensitive optical detector is configured to detect the specific location of incidence of an optical signal received from the object, and the processor is configured to generate information relating to the inclination of the object from processing optical signals received at the position sensitive optical detector.

REFERENCES:
patent: 5101570 (1992-04-01), Shimura
patent: 5218415 (1993-06-01), Kawashima
patent: 5742383 (1998-04-01), Jeon
patent: 5883709 (1999-03-01), Okuda et al.
patent: 5893215 (1999-04-01), Kumagai et al.
patent: 6984838 (2006-01-01), Kosugi
patent: 7042581 (2006-05-01), Schietinger et al.
patent: 2001/0042846 (2001-11-01), Togashi
patent: 2001-183121 (2001-07-01), None
International Search Report Application No. PCT/CN2007/070875 dated Jan. 10, 2008.

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