Optical smoke detector with scattered light collecting elements

Details Optical smoke detector with scattered light collecting elements Optical smoke detector with scattered light collecting elements

G - Physics

08

B

73/59, 340/140.1

G08B 17/10 (2006.01) G08B 17/107 (2006.01)

Patent

CA 1111929

ABSTRACT OF THE DISCLOSURE An optical smoke detector comprising a radiation source transmittin radiation throughout a predetermined spatial region and at least one radiation receiver to which there is delivered the radiation scattered by particles located in the radiation region. One or a number of elements conducting radiation by reflection are provided and arranged such that they remove radiation, which has been forwardly scattered at an acute angle with respect to the radiation direction, at a substantially ring- shaped zone about the region of direct radiation and delivers such removed forwardly scattered radiation to the radiation receiver.

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