EPI illumination optical system for microscopes

Details EPI illumination optical system for microscopes EPI illumination optical system for microscopes

2007-05-30

2008-10-14

Nguyen, Thong (Department: 2872)

Optical: systems and elements

Compound lens system

Microscope

C359S385000, C359S381000, C359S368000

Reexamination Certificate

active

07436591

ABSTRACT:
The invention related to an epi illumination optical system for microscopes wherein both a simple yet bright Köhler illumination system and a collective lens array using a collective lens less susceptible of illumination fluctuations are easily interchangeable in simple constructions. The invention provides an epi illumination optical system for microscopes, with a microscope objective lens that also serves as a condenser lens, which also comprises a relay lens. The first illumination optical system comprises a light source, and a collector lens, and a second illumination optical system comprises a light source, a collimate lens and a lens array provided in an interchangeable way.

REFERENCES:
patent: 4063797 (1977-12-01), Taira
patent: 5777784 (1998-07-01), Tanaka
patent: 6507434 (2003-01-01), Miyashita
patent: 6985288 (2006-01-01), Miyashita et al.
patent: 06-289301 (1994-10-01), None
patent: 2005-283879 (2005-10-01), None

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