Method for making a glass-based soft-edged aperture filters

Glass manufacturing – Processes – With chemically reactive treatment of glass preform

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65 33, 65 30R, 65 37, 65 60C, 65 61, C03C 1500, C03B 1108, C03C 1900

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active

040652831

ABSTRACT:
Glass-based soft-edged aperture filters having good thermal stability are produced by diffusing a coloring element such as Ag into a glass, thus providing a transmittance gradient in the colored portion thereof. A glass composition comprising a basic glass, such as a silicate, borosilicate or phosphate glass, and 1 to 10% by weight of As.sub.2 O.sub.3 and/or Sb.sub.2 O.sub.3 is especially suitable for producing such soft-edged aperture filters.

REFERENCES:
patent: 2925370 (1960-02-01), Rohrer
patent: 3486808 (1969-12-01), Hamblen
patent: 3495963 (1970-02-01), Buckley et al.
patent: 3528847 (1970-09-01), Grego et al.
patent: 3563057 (1971-02-01), Rosenbauer
patent: 3764198 (1973-10-01), Hunzinger
patent: 3802761 (1974-04-01), Giallorenzi et al.
patent: 3843343 (1974-10-01), Okada et al.
patent: 3846099 (1974-11-01), Simmons
patent: 3873408 (1975-03-01), Hensler
patent: 3888648 (1975-06-01), West et al.
patent: 3907586 (1975-09-01), Kiefer
patent: 3940531 (1976-02-01), Demarest, Jr.

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