Radiant energy – Luminophor irradiation
Patent
1985-09-09
1987-03-31
Howell, Janice A.
Radiant energy
Luminophor irradiation
2504612, 350 9615, 436527, G01N 2164, G02B 624
Patent
active
046545328
ABSTRACT:
An optical wave guide particularly useful in assay apparatus employing total internal reflection of excitation radiation at the interface between the wave guide and a surrounding liquid phase of lower index of refraction. The wave guide in the form of a solid, light-transmissive, elongated rod or fiber made typically of glass, crystal or plastic and having preferably a circular cross-section, is tapered gradually from an entrance face of relatively large diameter to a substantially smaller diameter at some position longitudinally displaced from the entrance face. In one form, the wave guide is formed with a tapering conical input portion coupled to a second portion having a cylindrical configuration and a diameter matched to the smaller diameter of the tapered portion.
REFERENCES:
patent: 3779628 (1973-12-01), Kapron et al.
patent: 4050895 (1977-09-01), Hardy et al.
patent: 4133639 (1979-01-01), Harte
patent: 4167746 (1979-09-01), Storm
patent: 4321057 (1982-03-01), Buckles
patent: 4399099 (1983-08-01), Buckles
patent: 4447546 (1984-05-01), Hirschfeld
patent: 4521070 (1985-06-01), Sottini et al.
Hannaher Constantine
Howell Janice A.
Ord, Inc.
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