Spectroscopic apparatus for extremely faint light

Details Spectroscopic apparatus for extremely faint light Spectroscopic apparatus for extremely faint light

1988-10-25

1991-01-08

Willis, Davis L.

Optics: measuring and testing

By particle light scattering

With photocell detection

G01J 345

Patent

active

049830414

ABSTRACT:
The present invention relates to a photo-counting Fourier spectroscopic apparatus which enables spectroscopic detection of extremely fine emission light seen in a living-body specimen or the like as bioluminescence, chemiluminescence, and fluoroescence from a living-body specimen. A light from a specimen which emits an extremely faint light is guided to an interferometer. A two-dimensional photon counter is used as an interference fringe detector. The two-dimensional photo counting device counts the number of incident photons to form an image. The obtained image is subjected to Fourier analysis to thereby obtain spectral information about the incident light. A double beam interferometer, a triangular common path interferometer, a Michelson interferometer and other interferometers are used.

REFERENCES:
patent: 4195931 (1980-04-01), Hara
patent: 4523846 (1985-06-01), Breckinridge et al.
patent: 4575248 (1986-03-01), Horwitz et al.
patent: 4732481 (1988-03-01), Matsui et al.
patent: 4750834 (1988-06-01), Fateley

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