Apparatus and method for detecting the focal position of an...

Details Apparatus and method for detecting the focal position of an... Apparatus and method for detecting the focal position of an...

2011-07-19

2011-07-19

Epps, Georgia Y (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

C250S201500, C250S201900, C369S112010, C606S003000

Reexamination Certificate

active

07982169

ABSTRACT:
An apparatus and a method are presented for detecting the focal position of an optical system (10) with a radiation source (12), a focusing imaging system (16), an at least partially reflective surface (18) on the focus (18a), a digital camera (24) for recording an image reflected by said surface (18), a computer (C) for evaluating the image recorded by the camera (24), and with an optical element (34; 36) in the beam path of the optical system (10) upstream of the focusing imaging system (16), which element influences said image depending on the focal position.

REFERENCES:
patent: 5676866 (1997-10-01), in den Baumen et al.
patent: 5818592 (1998-10-01), Womack et al.
patent: 6448534 (2002-09-01), Kobsa
patent: 6666857 (2003-12-01), Smith
patent: 6909546 (2005-06-01), Hirai
patent: 7207983 (2007-04-01), Hahn et al.
patent: 7284861 (2007-10-01), Fujieda
patent: 2002/0171028 (2002-11-01), Feldman
patent: 2004/0021851 (2004-02-01), Namiki
patent: 2004/0051976 (2004-03-01), Karin et al.
patent: 2007/0010803 (2007-01-01), Bischoff et al.
patent: 2007/0179478 (2007-08-01), Dobschal et al.
patent: 10356415 (2005-06-01), None
patent: 102004009212 (2005-09-01), None
patent: 0627675 (1994-12-01), None
patent: 1159986 (2001-12-01), None
patent: 03/002008 (2003-01-01), None
patent: 2005/039462 (2005-05-01), None
International Patent Cooperation Treaty Patent Application PCT/EP2007/001456 International Search Report and Written Opinion of the International Searching Authority of Jun. 15, 2007.

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