Precision pressed optical components made of glass and glass sui

Details Precision pressed optical components made of glass and glass sui Precision pressed optical components made of glass and glass sui

1981-12-07

1983-07-05

Bell, Mark

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 46, 501 47, 501 73, 501 74, 501 76, 501 79, 501900, C03C 316

Patent

active

043919154

ABSTRACT:
Optical components can be pressed with such a precision that grinding and polishing of the formed components is not necessary, from glasses containing 45-55 wt. % P.sub.2 O.sub.5, 3.5-9 wt. % Al.sub.2 O.sub.3, 5-20 wt. % K.sub.2 O, 0-3 wt. % Li.sub.2 O, 8-15% BaO, 4.5-9 wt. % ZnO, 0-6 wt. % MgO, 0-18 wt. % PbO, 0-1 wt. % SiO.sub.2, 0-3 wt. % B.sub.2 O.sub.3, 0-2 wt. % TiO.sub.2.

REFERENCES:
patent: 3281254 (1966-10-01), Weidel
patent: 3328181 (1967-06-01), Weidel
patent: 3451829 (1969-06-01), Bromer et al.
patent: 3481749 (1969-12-01), Godron
patent: 3979322 (1976-09-01), Alexeev et al.
patent: 4108673 (1978-08-01), Toratoni et al.
patent: 4110245 (1978-08-01), Yamashita
patent: 4303298 (1981-12-01), Yamashita

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