Optoelectrical particle detection apparatus

Details Optoelectrical particle detection apparatus Optoelectrical particle detection apparatus

G - Physics

01

N

73/58, 340/140.1

G01N 21/47 (2006.01) G01N 15/02 (2006.01) G01N 15/14 (2006.01) G01N 21/53 (2006.01) G01N 21/51 (2006.01) G01N 21/94 (2006.01)

Patent

CA 1317783

OPTOELECTRICAL PARTICLE DETECTION APPARATUS ABSTRACT OF THE DISCLOSURE A optoelectrical particle detection apparatus comprising concave and convex reflectors spaced from each other by a predetermined distance, a laser source for emitting a laser beam and introducing the laser beam between the concave and convex reflectors, the concave and convex reflectors and the laser source being arranged so that the laser beam is multi-reflected at a much closer pitch to form a laser beam curtain in which the multi-reflected beam segments are overlapped with respect to each other to enhance a light intensity thereof, and a optoelectrical detector for receiving light scattered due to a presence of particles in the laser beam curtain, whereby the presence of particles can be detected in the laser beam curtain with a high probability and a high sensitivity.

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