Glass optical element and method for producing the same

Details Glass optical element and method for producing the same Glass optical element and method for producing the same

2007-01-02

2007-01-02

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

With graded refractive index

Reexamination Certificate

active

11245172

ABSTRACT:
The invention provide a glass optical element which contains an alkaline metal oxide and an alkaline earth metal oxide, comprising an end portion that contains a fluoride ion or a fluorine compound on or in a vicinity of an exposed surface of the glass optical element. The end portion containing the fluoride ion or the fluorine compound is formed by contacting the surface with hydrofluoric acid. A rod lens array is fabricated by arranging a plurality of graded index rod lenses as glass optical elements of the invention. The weather resistance of the element or the lens array can be improved by the above treatment.

REFERENCES:
patent: 4509824 (1985-04-01), Yamasaki et al.
patent: 4518222 (1985-05-01), Borrelli et al.
patent: 4844589 (1989-07-01), Asahara et al.
patent: 6816319 (2004-11-01), Tsuda et al.
patent: 58-2243 (1983-01-01), None
patent: 60-260445 (1985-12-01), None
patent: 11-171599 (1999-06-01), None

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