Wavelength selective light collector system

Details Wavelength selective light collector system Wavelength selective light collector system

1995-10-18

1997-01-28

Hannaher, Constantine

Radiant energy

Source with recording detector

Using a stimulable phosphor

G01T 1105, G03B 4202

Patent

active

055980082

ABSTRACT:
A hollow light collector has an internal surface coated with a wavelength selective coating to absorb light energy within a predefined range of wavelengths and reflect all other light energy. In the preferred embodiment, the light collector is cylindrical in shape and includes an entrance aperture extending along the longitudinal axis of the collector. An exit aperture is disposed opposite to, and is coextensive with, the entrance aperture, defining a beam path therebetween to allow a scanning beam to traverse the chamber. A detector, such as a photomultiplier tube, is in optical communication with the chamber and is disposed off the beam path to detect light reflecting from the coating. In other embodiments, the chamber of the hollow collector may be spherical or ellipsoidal in shape.

REFERENCES:
patent: 4680473 (1987-07-01), Matsuda et al.
patent: 4743759 (1988-05-01), Boutet
patent: 4864134 (1989-09-01), Hosoi et al.
patent: 5140160 (1992-08-01), Boutet et al.
patent: 5274228 (1993-12-01), Kaplan
patent: 5369481 (1994-11-01), Berg et al.
patent: 5507976 (1996-04-01), Bringley et al.

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