Optical phase modulation instruments

Details Optical phase modulation instruments Optical phase modulation instruments

1977-03-04

1981-09-15

Clark, Conrad J.

Optics: measuring and testing

By particle light scattering

With photocell detection

356361, 350356, G01B 902

Patent

active

042894034

ABSTRACT:
To obtain the refractive index of a fluid, each of two beams of light are transmitted at an angle through different ends of a vibrating quartz crystal to phase modulate the beams of light with respect to each other and then transmitted through two different flow cells before being combined at a point of nearly equal optical path length from the source of light, with the resulting interference pattern being transmitted onto a photocell to generate an electrical signal which varies periodically with the modulation of the two beams of light. The signal from the photocell and a signal representing the modulation of the crystal are compared in phase and a third signal indicates the refractive index of the effluent from the chromatographic column generated as a result of this comparison.

REFERENCES:
patent: 3183359 (1965-05-01), White
patent: 3442570 (1969-05-01), Picker
patent: 3632214 (1972-01-01), Chang et al.
patent: 3796495 (1974-03-01), Laub
patent: 3825348 (1974-07-01), Nomarski et al.

Affiliated with

Also associated with

Rating

Optical phase modulation instruments 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 phase modulation instruments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical phase modulation instruments will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-388431