Optical smoke detectors

Details Optical smoke detectors Optical smoke detectors

G - Physics

08

B

88/13, 340/140.1

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

Patent

CA 1225719

ABSTRACT There is provided a flash reflector for maximising the intensity of light passing into an air sampling chamber of a smoke detector which enables a reduction in power requirements for the light source. The reflector includes a concave reflecting element to focus light from each infinitesimal cross-sectional element off the arc of ionized gas in a flash tube the light output from the whole length of the tube which is optionally of U-shape being focused into the central region of the sampling chamber.

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