Radiant energy – Photocells; circuits and apparatus – Housings
Reexamination Certificate
2006-04-25
2006-04-25
Luu, Thanh X. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Housings
C250S221000
Reexamination Certificate
active
07034284
ABSTRACT:
An optical sensor projects light rays emanating from a light emitting element that are collimated by a lens and reflected by a mirror and then directed to a light projecting prism. The collimated light rays incident upon the prism are refracted at an incident surface and come out from the prism through a light exit surface so as thereby to be projected into the field of detection. Light rays passing through the field of detection are directed to a light receiving prism. The light rays incident upon the light receiving prism through a light incident surface are reflected by a light exit surface and then come out from the light receiving prism. The outgoing light rays are received and converted into an electric signal by a light receiving element.
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Keyence Corporation
Ko Tony
Luu Thanh X.
Smith Patent Office
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