Device for detecting invisible light beam

Details Device for detecting invisible light beam Device for detecting invisible light beam

2007-01-16

2007-01-16

Allen, Stephone B. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S234000, C250S354100

Reexamination Certificate

active

10813795

ABSTRACT:
A light beam detection device includes a light-receiving element for receiving a light beam and outputting a detection signal. A light detection circuit generates and outputs a light-emission signal based on the detection signal. A light-emitting element emits light based on the light-emission signal. The light-receiving element and the light-emitting element are arranged on a detection member. A supporting member supports the detection member. A driving device moves the supporting member in a reciprocative manner in an X axis direction and a Y axis direction to form a detection region with the detection member. The light-emitting means forms an afterimage on the detection region when the light beam irradiates the detection region.

REFERENCES:
patent: 3757125 (1973-09-01), Okada et al.
patent: 5467194 (1995-11-01), Pellinen et al.
patent: 06-236574 (1994-08-01), None

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