Focus detection device and fluorescent observation device...

Details Focus detection device and fluorescent observation device... Focus detection device and fluorescent observation device...

2007-10-22

2009-11-03

Luu, Thanh X (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

Reexamination Certificate

active

07612316

ABSTRACT:
A focus detection device which is applied to a fluorescent observation device for observing a fluorescent image to be emitted from an observation sample on the basis of an evanescent light, includes an image pickup unit which detects a contrast of the fluorescent image by imaging the fluorescent image, and a detector which detects a focus on the basis of the detection result.

REFERENCES:
patent: 6594011 (2003-07-01), Kempen
patent: 2004/0113043 (2004-06-01), Ishikawa et al.
patent: 2004/0174523 (2004-09-01), Uhl et al.
patent: 2003-270524 (2003-09-01), None
patent: 03/077008 (2003-09-01), None

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