Photo sensing device

Details Photo sensing device Photo sensing device

1990-02-09

1991-06-18

Brown, Brian W.

Photocopying

Contact printing

Light boxes

354290, 355 67, 355 71, 362 16, G03B 1502

Patent

active

050245252

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.

REFERENCES:
patent: 1893211 (1933-01-01), Simjian
patent: 3709119 (1973-01-01), Van Der Meer
patent: 3737226 (1973-06-01), Shank
patent: 4019042 (1977-04-01), Baliozian
patent: 4089017 (1978-05-01), Buldini

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