Microscope objective for accommodating different cover-glass thi

Details Microscope objective for accommodating different cover-glass thi Microscope objective for accommodating different cover-glass thi

1989-03-30

1990-09-04

Arnold, Bruce Y.

350414, G02B 2102, G02B 1130

Patent

active

049539620

ABSTRACT:
A microscope objective adjustable for different thicknesses of cover-glass includes a second lens (L2 and L3) movable between a first lens (L1) and a third lens (L4) and a fourth lens (L5) movable with the second lens, but in an opposite direction. A ring that accomplishes movements of the second and fourth lenses also resets the focus of the objective. All movements are linear and are arranged to maintain the correction of image error while the objective is adjustable over a wide range of cover-glass thicknesses from 0 to 2 mm.

REFERENCES:
patent: 4059342 (1977-11-01), Tojyo
patent: 4208101 (1980-06-01), Trapp et al.
patent: 4403835 (1983-09-01), Ushida
patent: 4666256 (1987-05-01), Shimizu et al.
patent: 4666262 (1987-05-01), Zobel

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