EP 0135362 B1 19900411 - OPTICAL SMOKE DETECTORS
Title (en)
OPTICAL SMOKE DETECTORS
Publication
Application
Priority
- AU 3184384 A 19840810
- AU PG082283 A 19830812
Abstract (en)
[origin: EP0135362A2] A flash reflector (60) for maximising the intensity of light passing into an air sampling chamber (70) of a smoke detector which enables a reduction in power requirements for the light source. The reflector (60) includes a concave reflection element (61) to focus light from each infinitesimal cross-sectional element of the arc of ionized gas in a flash tube (62), the light output from the whole length of the tube which is optionally of U-shape being focused into the central region (72) of the sampling chamber.
IPC 1-7
IPC 8 full level
G08B 17/107 (2006.01)
CPC (source: EP)
G08B 17/107 (2013.01); G08B 17/113 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0135362 A2 19850327; EP 0135362 A3 19860625; EP 0135362 B1 19900411
DOCDB simple family (application)
EP 84305514 A 19840813