Light scattering type smoke detector

Details Light scattering type smoke detector Light scattering type smoke detector

1976-07-07

1978-08-01

Engle, Samuel W.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

250574, 356103, G01N 2100, G01N 2126

Patent

active

041039971

ABSTRACT:
A light scattering type smoke detector effectively sensitive both to white and black smokes is provided. A wave length .lambda. of an incident light from a light source and a scattered light receiving angle .theta. defined by the direction of the incident light and the direction connecting between a smoke particle and a light receiving element are so determined as to satisfy .lambda. .ltoreq. 950 m.mu. when .theta. .ltoreq. 45.degree., .theta. .ltoreq. - 0.18 .lambda. + 216 when 45.degree. .ltoreq. 135.degree. and .theta. .ltoreq. 135.degree. when .lambda. .ltoreq. 450 m.mu..

REFERENCES:
patent: 3474435 (1969-10-01), White
patent: 3505529 (1970-04-01), Moore
patent: 3524707 (1970-08-01), Hansen
patent: 3612689 (1971-10-01), Liskowitz
patent: 3621220 (1971-11-01), Ford
patent: 3701620 (1972-10-01), Berkman
patent: 3932762 (1976-01-01), Moser

Affiliated with

Also associated with

Rating

Light scattering type smoke detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Light scattering type smoke detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light scattering type smoke detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1977222