Gradient index silicate glass

Details Gradient index silicate glass Gradient index silicate glass

1993-11-12

1995-09-05

Sugarman, Scott J.

Optical: systems and elements

Lens

With graded refractive index

359652, G02B 300

Patent

active

054484090

ABSTRACT:
A gradient index silicate glass is disclosed, which comprises a silicate glass and, incorporated therein, barium, at least one first metal selected from the group consisting of lead, titanium, niobium and tantalum and at least one second metal selected from the group consisting of potassium and sodium. The barium and the first and second metals have either protrudent and recessed concentration distribution profiles, respectively, or recessed and protrudent concentration distribution profiles, respectively. The gradient index silicate glass has a dispersion distribution of A DIRECTION permitting a highly effective optical design, and can be stably produced at low cost on a large commercial scale.

REFERENCES:
patent: 4462663 (1984-07-01), Shimizu et al.

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