Illumination system for microscopes

Details Illumination system for microscopes Illumination system for microscopes

1981-04-06

1983-08-09

Corbin, John K.

350572, G02B 2108

Patent

active

043975291

ABSTRACT:
An illumination system for microscopes which composes an illumination system for microscopy at high magnification level of a light source, a collector lens, a field stop, an aperture stop, a relay lens system for high magnification level and a condenser lens, and composes an illumination system for microscopy at low magnification level by using a relay lens system for low magnification level in place of said relay lens system for high magnification level and said condenser lens employed for composing the illumination system for microscopy at the high magnification level. Said illumination system is so adapted as to provide favorable illumination within a wide magnification range from 1.times. to 100.times..

REFERENCES:
patent: 1236722 (1917-08-01), Lange
patent: 2541014 (1951-02-01), Orser
patent: 2997916 (1961-08-01), Friedman et al.
patent: 3137761 (1964-06-01), Conradi et al.
patent: 3484148 (1969-12-01), Gotoh
patent: 3679287 (1972-07-01), Takahashi et al.
patent: 4063797 (1977-12-01), Taira

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