Method and apparatus for measuring the concentration of opticall

Details Method and apparatus for measuring the concentration of opticall Method and apparatus for measuring the concentration of opticall

1989-07-19

1991-01-29

Willis, Davis L.

Optics: measuring and testing

By polarized light examination

With polariscopes

250225, G01N 2121

Patent

active

049881990

ABSTRACT:
The concentration of optically active substances is determined by measuring the polarization of light passed through the substance using a light source, a polarizer and a modulator operated at a predetermined modulation frequency f.sub.F, as well as a measuring cell, an analyzer and a detector. The output signal from the detector 16 is alternately integrated during each half period of the modulation frequency to form voltage values U.sub.I+ and U.sub.I-. These voltage values are stored and the quotient Q of these stored voltage values is formed. Subsequently, an adjustable constant voltage is subtracted from the quotient. The measuring arrangement can have a miniature design for implantation. No mechanically moving parts and only a single detector are used. The measurement is accomplished by a simple, miniature linear ray path having high resolution.

REFERENCES:
patent: 3397607 (1968-08-01), Goodwin
Rogouoi et al., "High-precision polarimeter-saccharimeter for an automatic testing line", Sov. J. Opt. Technol. vol. 47, No. 5, pp. 276-278, 5/1980.
Gates et al, "An Automatic Recording Saccharimeter", Chemestry and Industry, pp. 190-193, 2/1958.
Optics and Spectroscopy, vol. 32, No. 6, Jun. 1972, pp. 667-669; A. V. Malakhovskii: "Automatic Spectropolarimeter" (no date).

Affiliated with

Also associated with

Rating

Method and apparatus for measuring the concentration of opticall does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for measuring the concentration of opticall, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for measuring the concentration of opticall will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-810117