Lighting device

Details Lighting device Lighting device

1993-04-23

1994-09-27

Lazarus, Ira S.

Illumination

Revolving

362312, 362346, 359385, 359389, G02B 2106

Patent

active

053511697

ABSTRACT:
A lighting device capable of lighting a surface of an observed section of a specimen sample so as to permit an object of observation of the surface to be satisfied even when the surface has relatively fine unevenness. Any one of light field illumination mainly using vertically projected light, dark field illumination mainly using laterally projected light and a combination thereof is selectively carried out with respect to the surface of the specimen sample as desired, to thereby selectively provide a lighted two-dimensional image of the surface and its lighted three-dimensional image as desired.

REFERENCES:
patent: 2097762 (1937-11-01), Heine
patent: 4585315 (1986-04-01), Sincerbox et al.

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