Microscope using oil immersion system objective and its...

Details Microscope using oil immersion system objective and its... Microscope using oil immersion system objective and its...

2006-06-19

2009-10-13

Nguyen, Thong (Department: 2872)

Optical: systems and elements

Lens

Microscope objective

C359S368000, C359S656000

Reexamination Certificate

active

07602556

ABSTRACT:
A microscope has an oil immersion system objective and an imaging lens to make observations by charging oil between a cover glass protecting a sample and the most sample-side lens surface. At least one of a plurality of lens units, placed on the image side of the most sample-side lens in the oil immersion system objective, is moved along the optical axis, and thereby a front focal distance and a front focal position can be adjusted so that a predetermined depth position of the sample is focused in a state where a working distance WD between the cover glass and the most sample-side lens surface in the oil immersion system objective is set to a condition, 0<WD≦0.03 mm.

REFERENCES:
patent: 6560032 (2003-05-01), Hatano
patent: 7085045 (2006-08-01), Hanzawa et al.
patent: 2004/0257962 (2004-12-01), Walker et al.
patent: 2006/0109558 (2006-05-01), Nishioka
patent: 11-269317 (1999-10-01), None
patent: 2002-350734 (2002-12-01), None

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