Illumination/viewing system for features in transparent material

Details Illumination/viewing system for features in transparent material Illumination/viewing system for features in transparent material

1997-02-28

1999-07-20

Nguyen, Thong

Optical: systems and elements

Compound lens system

Microscope

359386, 359387, G02B 2106

Patent

active

059263113

ABSTRACT:
Method and apparatus for illuminating a transparent material for identifying individual features in the material having similar refractive indices, without using a phase-contrast microscope, by illuminating the material by light directed at an angle to a reflective surface which directs the light through the material to a viewing device such as a microscope.

REFERENCES:
patent: 2944463 (1960-07-01), Rantsch
patent: 4440475 (1984-04-01), Colliaux
patent: 4523849 (1985-06-01), Stone
patent: 4906083 (1990-03-01), Sattler
patent: 5035476 (1991-07-01), Ellis et al.
"Fundamentals of Optics" by Jenkins & White McGraw-Hill, 1976, pp. 602-603.

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