Stereomicroscope

Details Stereomicroscope Stereomicroscope

1994-05-26

1997-12-23

Dzierzynski, Paul M.

Optical: systems and elements

Compound lens system

359656, 359657, 359658, 359659, 359661, 359692, 359664, 359654, G02B 2136, G02B 2102, G02B 300, G02B 1514

Patent

active

057011966

ABSTRACT:
A stereomicroscope comprising an objective lens system and eyepiece lens systems, the objective lens system comprising at least two lens units, permitting a working distance thereof by varying at least one airspace and having a concave surface at a location farthest from an object to be observed so as to minimize lowering of the magnification of the stereomicroscope and stereoscopic impressions of images observed through the stereomicroscope.

REFERENCES:
patent: 3664724 (1972-05-01), Klein
patent: 3813172 (1974-05-01), Walker et al.
patent: 4054126 (1977-10-01), Shoemaker
patent: 4155622 (1979-05-01), Klein
patent: 4448498 (1984-05-01), Muller et al.
patent: 4991947 (1991-02-01), Sander et al.
patent: 5000548 (1991-03-01), Klein
patent: 5059005 (1991-10-01), Kawano
patent: 5227920 (1993-07-01), Shibayama
patent: 5394267 (1995-02-01), Hanzawa
patent: 5398135 (1995-03-01), Ohashi
patent: 5473473 (1995-12-01), Estelle et al.

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