Optical particle analyzers

Details Optical particle analyzers Optical particle analyzers

1979-11-30

1982-09-07

Corbin, John K.

Optics: measuring and testing

For size of particles

By particle light scattering

356338, 356342, 356346, G01N 1502

Patent

active

043481116

ABSTRACT:
An optical particle analyzer in which the size of a particle in a particle stream is determined from the intensity or the duration of light scattered from it. A laser beam is directed transversely onto the stream and scattering occurs at the beam focus. To ensure that only particles which traverse the center of the beam are considered, a smaller, validating beam concentric with the main beam also produces scattered light. A pulse from the narrow beam coincident with one from the broad beam confirms that the associated particle has passed through the center of the broad beam and warrants consideration and assessment.
A further narrow beam spaced from the first provides a time delay, dependent on particle velocity, between interception of the two narrow beams by a particle. Particle velocity is thus measured.

REFERENCES:
patent: 3563660 (1971-02-01), Soloway et al.
patent: 3851169 (1974-11-01), Faxvog
patent: 3873204 (1975-03-01), Friedman et al.
patent: 3941477 (1976-03-01), Schodl
patent: 3960449 (1976-06-01), Carleton et al.
patent: 3992103 (1976-11-01), Tyley et al.
patent: 4011459 (1977-03-01), Knollenberg et al.
patent: 4125778 (1978-11-01), Smart
patent: 4140395 (1979-02-01), Kreikebaum
patent: 4146799 (1979-03-01), Pitt et al.
patent: 4152070 (1979-05-01), Kushuer et al.

Affiliated with

Also associated with

Rating

Optical particle analyzers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical particle analyzers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical particle analyzers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1340166