Integrating sphere aerosol particle detector

Details Integrating sphere aerosol particle detector Integrating sphere aerosol particle detector

1989-05-12

1990-07-17

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250228, 356343, 356339, G01N 1506

Patent

active

049423053

ABSTRACT:
An integrating sphere for detecting particles in an aerosol has a diffuse reflectant interior surface and a plurality of photodetectors. The aerosol passing through aligned ducts which are spaced at the center of the integrating sphere, and a beam of collimated light, such as a laser beam, projects transversely through the aerosol in the space. Particles in the aerosol scatter the light, and the scattered light is detected simultaneously by the photodetectors within the integrating sphere. A coincidence detection circuit is used to detect the number of times scattered light is simultaneously detected by the photodetectors and, thereby, count the number of particles in the aerosol.

REFERENCES:
patent: 3624835 (1971-11-01), Wyatt
patent: 3826574 (1974-07-01), Brown, Jr.
patent: 3838926 (1974-10-01), Kato et al.
patent: 3869208 (1975-03-01), Lorenz
patent: 4320978 (1982-03-01), Sato
patent: 4690560 (1987-09-01), Coogan
patent: 4746215 (1985-05-01), Gross

Affiliated with

Also associated with

Rating

Integrating sphere aerosol particle 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 Integrating sphere aerosol particle detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrating sphere aerosol particle detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-95971