Measurement of size and refractive index of particles using the

Details Measurement of size and refractive index of particles using the Measurement of size and refractive index of particles using the

1990-07-02

1991-08-06

Rosenberger, Richard A.

Optics: measuring and testing

For size of particles

By particle light scattering

356338, 356335, 356349, 356364, G01N 1502

Patent

active

050372025

ABSTRACT:
An apparatus is described for classifying particles and includes an optical system for transmitting to a focal plane which includes at least one particle, two substantially parallel optical beams, the beams being initially mutually coherent but of different polarizations. The beams are displaced and focused in the focal plane. A further optical system is positioned in the path which the beam takes after depating from the focal plane and combines the beams so that a particle-induced phase shift in one beam is manifest by a change in elliptical polarization of the combined beams. A first detector is responsive to the beam's intensity along a first polarization axis to produce a first output and a second detector is responsive to the beams intensity along a second polarization axis to produce a second output. The first and second outputs are added to provide an extinction signal and, in a separate device, are subtracted to provide to phase shift signal. The extinction signal and phase shift signal are both fed to a processor which classifies a particle in accordance therewith.

REFERENCES:
patent: 4284355 (1981-08-01), Hansen et al.
patent: 4358201 (1982-11-01), Makosch
patent: 4650330 (1987-03-01), Fujita
patent: 4850225 (1989-07-01), Chen et al.

Affiliated with

Also associated with

Rating

Measurement of size and refractive index of particles using the does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Measurement of size and refractive index of particles using the , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement of size and refractive index of particles using the will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1982406