Focusing state signal output apparatus for a microscope...

Details Focusing state signal output apparatus for a microscope... Focusing state signal output apparatus for a microscope...

2002-11-27

2009-02-03

Ye, Lin (Department: 2622)

Television

Camera, system and detail

Optics

C348S079000, C359S382000, C359S383000

Reexamination Certificate

active

07486329

ABSTRACT:
A focusing state signal output apparatus comprises, an optical detection part configured to detect a reflected light from a sample, and an output part configured to output an a focusing state signal, which is a signal showing a focusing state of the sample, has inverse sign on both sides of a focused position and shows continuous change of a voltage level crossing a zero at the focused position.

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