Time domain Fraunhofer line discriminator

Details Time domain Fraunhofer line discriminator Time domain Fraunhofer line discriminator

1989-04-17

1991-01-29

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

With synchronized spectrum repetitive scanning

2504581, 356328, 356318, G01N 2164, G01J 318

Patent

active

049881965

ABSTRACT:
A scanning spectrometer scans the spread spectrum of sunlight and low level luminescence or fluorescence past a slit to provide the spectrum scanned in the time domain. An image intensifier responsive to the light energy passing through the slit is gated on when Fraunhofer lines are coincident with the slit. A photodetector responsive to the image intensifier detects the intensified total energy within each Fraunhofer line.

REFERENCES:
patent: 3385160 (1968-05-01), Dawson et al.
patent: 4697924 (1987-10-01), Akiyama
patent: 4724326 (1988-02-01), Poultney et al.
patent: 4804266 (1989-02-01), Barshad
patent: 4862257 (1989-08-01), Ulich

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