Method for making lightweight mirror facesheets

Details Method for making lightweight mirror facesheets Method for making lightweight mirror facesheets

1980-05-27

1982-02-02

Kellogg, Arthur D.

Glass manufacturing

Processes

Fusion bonding of glass to a formed part

65 604, 65 607, C03C 2704

Patent

active

043137490

ABSTRACT:
A method for making lightweight mirrors. The method consists of metallizing a precise pattern onto the back surface of a mirror element so as to provide a surface to which stiffening ribs or other components, such as flexure components, may readily be soldered.
The method according to the present invention avoids the expense of conventional machining techniques and provides a better quality bond than is attainable by normal cementing. It also eliminates the risk of distortion and spoilage that is borne in fusing by firing to the softening point of the glass.

REFERENCES:
patent: 2139431 (1938-12-01), Vatter
patent: 2837235 (1958-06-01), Vincent
patent: 2920785 (1960-12-01), Veres
patent: 3186743 (1965-06-01), Russell, Jr.
patent: 3202493 (1965-08-01), Heil
patent: 3479170 (1969-11-01), Louden
patent: 3507737 (1970-04-01), Busdiecker et al.
patent: 3632008 (1972-01-01), Lind
patent: 3747173 (1973-07-01), Lind

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