System for radiation detection using a graded index optic elemen

Details System for radiation detection using a graded index optic elemen System for radiation detection using a graded index optic elemen

1987-08-17

1989-08-01

Howell, Janice A.

Radiant energy

Luminophor irradiation

2504611, G01J 158, G01N 2169

Patent

active

048535478

ABSTRACT:
An apparatus and method for delivering excitation radiation to a sample and collecting radiation emanating from the sample. The sample is placed in a deep well which consists of a wall and a bottom end closed by a membrane to form a sample recepticle. A GRIN lens is provided that has a first surface and a second surface, the second surface being inserted into the deep well. A point source of light on the first surface of the GRIN lens is conditioned by the lens and, subsequently, emanates from the second surface of the lens towards the membrane. Reflected, luminescent of fluorescent radiation from the sample is incident on the second surface of the lens, passes through the lens to emanate from the first surface toward collection means, a detector and any desired processing.

REFERENCES:
patent: 4223226 (1984-09-01), Quick et al.
patent: 4493212 (1985-01-01), Nelson
patent: 4498730 (1985-02-01), Tanaka et al.
patent: 4501970 (1985-02-01), Nelson
patent: 4626693 (1986-12-01), Hirschfeld
patent: 4630923 (1986-12-01), Tans et al.
IBM Technical Disclosure Bulletin, vol. 26, No. 9, pp. 4706-4707, Feb. 1984.
"Graded Index Rod Lenses", Sono, Yamasaki and Kishimoto, NSG America, Inc., Reprint from Laser Focus Mag., Feb. 1981, pp. 70-74.
Selfloc Microlens (SML) NSG American, Inc., Advertising Brochure, Copyright 1984.

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