Zoom microscope including an image-acquisition optical path...

Details Zoom microscope including an image-acquisition optical path... Zoom microscope including an image-acquisition optical path...

2006-04-20

2010-10-26

Allen, Stephone B (Department: 2872)

Optical: systems and elements

Compound lens system

Microscope

C359S432000, C359S434000

Reexamination Certificate

active

07821705

ABSTRACT:
The exposure time for obtaining a bright image in an image-acquisition optical system can be reduced, and shifting of an image visually observed in an observation optical system is prevented, thus enabling stable observation. A microscope including an image-acquisition optical path for recording an image focused by an objective lens and an observation optical path for visually observing an image split-off from the image-acquisition optical path; and including an aperture stop, in the observation optical path, for stopping down the numerical aperture thereof to smaller than the numerical aperture of the image-acquisition optical path.

REFERENCES:
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patent: 6816321 (2004-11-01), Zimmer et al.
patent: 2006/0181767 (2006-08-01), Hanzawa
Pedrotti, F. et al., Introduction to Optics, 1993, Prentice-Hall, Second Edition, pp. 136-137.
Akihiro Youka et al., “Chapter 3.5:Resolution and Overall Magnification,” Principles of Biological Microscopes, Baifukan, pp. 34-39, (Jun. 20, 1973).

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