Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1988-07-27
1990-06-12
McGraw, Vincent P.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
356356, G01B 902
Patent
active
049327828
ABSTRACT:
A measuring method and device are provided based on the analysis of a channelled light spectrum, particularly for measuring a low amplitude movement of a mobile surface, possibly representative of the variation of a physical magnitude convertible into such a movement. Said device comprises a two beam interferometer (3) with two reflecting surfaces, one (5) fixed and the other (6) mobile, defining a difference of the rate of progress (e) of the light rays in the interferometer, a light source (1) and an analyzer (8) for analyzing the channelled spectrum generated by said light source in said interferometer, the analyzer is formed by means (9) for spactially spreading the channelled spectrum, by means of a filter (12) whose transmission and/or reflection coefficient is periodic, at least in one direction, of fixed period equal or substantially equal, except possibly for a factor, to the period of the spatial distribution of the spatially spread spectrum; and at least one photodetector (14,14') receiving the light transmitted and/or reflected by said network for determining said difference of rate of progress.
REFERENCES:
patent: 3549260 (1970-12-01), Barringer
patent: 3563663 (1971-02-01), Barringer
patent: 4472054 (1984-09-01), Pouit
Desforges Francois X.
Graindorge Philippe
McGraw Vincent P.
Photonetics S.A.
Turner S. A.
LandOfFree
Channelled light spectrum analysis measurement method and device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Channelled light spectrum analysis measurement method and device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Channelled light spectrum analysis measurement method and device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-613487