Surveying instrument

Details Surveying instrument Surveying instrument

2008-01-15

2008-01-15

Tarcza, Thomas H. (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

C356S004010, C356S004100

Reexamination Certificate

active

11137599

ABSTRACT:
A surveying instrument for projecting a distance measuring light to an object to be measured and for measuring a distance from a reflected light, comprising at least an image pickup unit for picking up an image of a spreading range of the distance measuring light, and a control unit for performing edge extraction from the image captured by the image pickup unit and for judging whether there is an edge or not within the spreading range.

REFERENCES:
patent: 6788817 (2004-09-01), Saka et al.
patent: 6847462 (2005-01-01), Kacyra et al.
patent: 1 422 499 (2004-05-01), None
patent: 1 493 990 (2005-01-01), None
patent: 2000-329517 (2000-11-01), None
patent: 2001-134771 (2001-05-01), None
patent: 2004/044528 (2004-05-01), None
Copy of the European Search Report dated Sep. 15, 2005.

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