Photo sensing device
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United States of America Patent
Stats
-
Jun 18, 1991
Grant Date -
N/A
app pub date -
Feb 9, 1990
filing date -
Feb 17, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A photosensing device in which a camera picks up through a see through-hole formed through a light diffuser reflection board an image of an object to be photosensed that has a high light reflectivity and that is indirectly irradiated upon by a light source, a member having a light reflectivity substantially same as that of the light diffuser reflection board and a property to pass therethrough the light is tightly fit to the see through-hole, and the camera picks up the object to be photosensed through the member.
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