Thallium-containing optical glass composition

Details Thallium-containing optical glass composition Thallium-containing optical glass composition

C - Chemistry, Metallurgy

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C

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C03C 3/085 (2006.01) C03C 3/062 (2006.01) C03C 3/066 (2006.01) C03C 3/076 (2006.01) C03C 3/078 (2006.01) C03C 3/089 (2006.01) C03C 13/04 (2006.01) C03C 21/00 (2006.01)

Patent

CA 1203816

ABSTRACT OF THE DISCLOSURE This invention relates to a thallium-containing optical glass composition suitable for production of A light-transmitting body, particularly a lens whose refractive index gradient de- creases continuously, and preferably parabolically, in a radially outward direction from its axis. The thallium-containing optical glass composition con- tains the following oxides in the indicated proportions in mole %: Image and satisfies the following relations: Image

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