Optical detection device and lighting method with varied irradia

Details Optical detection device and lighting method with varied irradia Optical detection device and lighting method with varied irradia

1997-07-10

1999-03-02

Le, Que T.

Radiant energy

Photocells; circuits and apparatus

With circuit for evaluating a web, strand, strip, or sheet

250216, 3562375, G01N 2186

Patent

active

058775072

ABSTRACT:
An optical detection device includes a light source device from which a light beam is irradiated on an object; an image processing unit for receiving a reflected light beam from the object by a camera and producing image data; a half-mirror provided one of between the camera and the object and between the light source device and the object; and a recognition element for carrying out a recognition process of the object based on the image data produced by the image processing unit. An irradiation angle of the light beam from the light source device is continuously varied with respect to the half-mirror, and the light beam from the light source device is always irradiated on the object via the half-mirror.

REFERENCES:
patent: 4555635 (1985-11-01), Yoshida

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