Optical parts and equipment using infrared athermal glasses

Details Optical parts and equipment using infrared athermal glasses Optical parts and equipment using infrared athermal glasses

1991-11-27

1994-01-11

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 43, C03C 332

Patent

active

052781070

ABSTRACT:
Optical parts and optical equipment, including lenses, mirrors and laser media made of athermal glasses having compositions comprising 0-13 mol % CdO, 9-24 mol % CdF.sub.2, 5-10 mol % LiF, 30-34.5 mol % AlF.sub.3 28-33.5 mol % PbF.sub.2, 0-4 mol % KF, 0-6.5 mol % YF.sub.3, and 0-2 mol % LaF.sub.3 and having little or no optical path length change as a function of temperature in the infrared region of 1.mu.m to 5.mu.m.

REFERENCES:
patent: 4537864 (1985-08-01), Tick
patent: 4752593 (1988-06-01), Tick
patent: 5015281 (1991-05-01), Hau et al.
patent: 5081076 (1992-01-01), Rapp
"Athermal Glass for the Infrared", Seiko Mitachi and Paul A. Tick; Applied Optics, Apr. 1, 1991, vol. 30, No. 10, pp. 1285-1289.
"Thermal Coefficient of Refractive Index of Optical Glasses", Tryggve Baak; Journal of the Optical Society of America, vol. 59, No. 7, pp. 851-857, Jul. 1969.
"Effect of Temperature Gradients on the Wave Aberration in Athermal Optical Glasses", F. Reitmayer and H. Schroeder; Applied Optics, vol. 14, No. 3, pp. 716-720, Mar. 1975.
"Dispersion Measurement on Fluoride Glasses and Fibers", S. Mitachi; Journal of Lightwave Technology, vol. 7, No. 8, Aug. 1989, pp. 1256-1263.

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