Lighting device for an observation/image pickup apparatus
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United States of America Patent
Stats
-
Dec 3, 1996
Grant Date -
N/A
app pub date -
Sep 29, 1995
filing date -
Sep 30, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A lighting device for an observation/image pickup apparatus capable of satisfactorily illuminating a surface of an observed section of a specimen sample for observation irrespective of whether a fine roughness is provided on the specimen surface. Illumination control slit members for laterally projected light, deflected oblique light, vertically projected light, and light composed of laterally projected light and vertically projected light, are provided, and selectively face an illumination light introducing section, to thereby convert illumination light (introduced through the illumination light introducing section) into any desired one of: laterally projected light, deflected oblique light, vertically projected light, and light composed of laterally projected light and vertically projected light, resulting in a surface of an observed section of a specimen sample being illuminated with the converted light.
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