Method of casting fluorescent lenses

Details Method of casting fluorescent lenses Method of casting fluorescent lenses

1974-03-29

1976-05-25

Bashore, S. Leon

Glass manufacturing

Processes

Devitrifying glass or vitrifying crystalline glass

65 68, 65DIG2, 106 47R, 106 396, 2523014R, 250332, 250338, 250487, C03B 3200, H01J 3149

Patent

active

039589706

ABSTRACT:
Fluorescent material for the optical frequency conversion of near infrared radiation from 0.85 to 1.06 .mu.m into visible radiation. The constituents of the material are (i) vitrifying fluorides of lead, beryllium and magnesium, (ii) devitrifying and activating fluoride of ytterbium and (iii) doping fluoride of erbium for a green and red response and doping fluoride of thulium for a blue response. The content of ytterbium fluoride controls the form of the material, either glassy ceramic or polycristalline. Proper preparation conditions allow to prepare either a glass material or a ceramic material.

REFERENCES:
patent: 3408430 (1968-10-01), Lachman
patent: 3527711 (1970-09-01), Barber et al.
patent: 3533956 (1970-10-01), Snitzer
patent: 3785834 (1974-01-01), Rapp
patent: 3788865 (1974-01-01), Babcock et al.
patent: 3829303 (1974-08-01), Zeto
patent: 3852077 (1974-12-01), Rapp

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