Optics: measuring and testing – For optical fiber or waveguide inspection
Patent
1991-08-19
1992-11-24
McGraw, Vincent P.
Optics: measuring and testing
For optical fiber or waveguide inspection
2504581, 356244, 356318, G01N 2164
Patent
active
051667436
ABSTRACT:
A conversion assembly for converting a spectrophotometer to a fluorometer which utilizes the light source and light detector of the spectrophotometer. The assembly has a conversion adaptor which is positionable in the spectrophotometer between the light source and the light detector. The adaptor is an enclosure having a receptacle for holding a sample container filled with the sample being analyzed and having openings formed therein to provide a light path for excitation light from the light source to the sample container and further to provide a light path for emitted luminescent light from the sample container to the light detector. In one embodiment the excitation light is centered on an optical shield on the front of the enclosure while light receiving openings at the edges of the front of the enclosure are positioned to receive off center excitation light. In another embodiment a light receiving opening is formed in the side of the enclosure and excitation light centered on the front of the enclosure is reflected around to the opening in the side of the enclosure by a plurality of reflectors.
REFERENCES:
patent: 3849654 (1974-11-01), Malvin
patent: 3877817 (1975-04-01), Ralston
patent: 4006990 (1977-02-01), Munk
patent: 4088407 (1978-05-01), Schoeffel et al.
patent: 4440497 (1984-04-01), Carey et al.
patent: 4935875 (1990-06-01), Shah et al.
patent: 4991958 (1991-02-01), Garner
Garland "A Spectrophotometer and Fluorimeter for University Courses in Biochemical and Related Sciences" American Laboratory, vol. 8# 11, Nov. 1976, pp. 57-62.
General Atomics
McGraw Vincent P.
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