Stereomicroscope for making transparent media visible and method

Details Stereomicroscope for making transparent media visible and method Stereomicroscope for making transparent media visible and method

1994-08-10

1997-04-08

Nguyen, Thong

Optical: systems and elements

Compound lens system

Microscope

359368, 359370, 359385, G02B 2106, G02B 2100

Patent

active

056193726

ABSTRACT:
Phase-contrasting elements are arranged in the viewing beam paths of a stereomicroscope to make transparent media visible with rich contrast such as in the area of ophthalmologic surgery. The phase-contrasting elements make the transparent media visible as phase objects in the amplitude contrast. The phase-contrasting elements are selected in dependence upon the light source diaphragm which is used.

REFERENCES:
patent: 2553108 (1951-05-01), Osterberg et al.
patent: 2660923 (1953-12-01), Benford
patent: 2977847 (1961-04-01), Meyer-Arendt
patent: 4265518 (1981-05-01), Matsumura
patent: 4407569 (1983-10-01), Piller et al.
patent: 5126877 (1992-06-01), Biber
patent: 5446509 (1995-08-01), Okinishi

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