Image pickup head for image pickup device
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United States of America Patent
Stats
-
Jan 29, 1991
Grant Date -
N/A
app pub date -
Feb 2, 1990
filing date -
Feb 4, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An image pickup head for an image pickup device capable of permitting the observed section at a subject to be illuminated with a uniform lumination while preventing the reflection of light at the observed section from adversely affecting an image of the observed section. A first polarizing element having a predetermined polarization plane is arranged in the optical path of light projected from the projection end of a light guide onto a subject, while a second polarizing element having a predetermined polarization plane is arranged in the optical path of light reflected at the subject and guided to an image pickup element. The polarization planes of the first and second polarizing elements are varied relative to each other to provide an image either including or free of light reflected at the surface of the subject.
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Cited Art Landscape
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