Smoke detector
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United States of America Patent
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Jan 27, 2015
Issued Date -
N/A
app pub date -
Oct 9, 2009
filing date -
Oct 9, 2008
priority date (Note) -
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Abstract
This smoke detector is provided with: a plurality of light emitting devices which emit light beams of mutually different wavelengths; and a plurality of scattered light receiving sections which receive, at a different scattering angle for each light beam of the respective wavelengths, scattered light generated due to the plurality of light beams emitted simultaneously from these light emitting devices impinging on smoke.
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