Method and apparatus for measuring light by frequency modulation

Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrophotometer

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

356325, G01J 342

Patent

active

048079936

ABSTRACT:
Method and apparatus for measuring light by frequency-modulating a light signal from a sample being measured and demodulating the modulated signal in synchronism with the modulating operation, wherein there is provided a delay circuit which produces a series of pulses for synchronous rectification of the modulated signal in response to and with a predetermined time delay after the modulating operation, so that before measurement of a specific sample the delay time is changed so as to determine the phase of the synchronous rectification pulses most suitable for measurement of the specific sample.

REFERENCES:
patent: 3345907 (1967-10-01), Wada
patent: 3993901 (1976-11-01), Widmer
patent: 4171913 (1979-10-01), Wildy et al.
patent: 4248536 (1981-02-01), Hijikata
patent: 4577106 (1986-03-01), Fukasawa et al.
patent: 4583853 (1986-04-01), Maeda et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for measuring light by frequency modulation 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 light by frequency modulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for measuring light by frequency modulation will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1362017

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.