Lighting device
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United States of America Patent
Stats
-
Sep 27, 1994
Grant Date -
N/A
app pub date -
Apr 23, 1993
filing date -
Apr 23, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Cited Art Landscape
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