Lamp reflecting mirror comprising polyphenylene sulfide, calcium

Details Lamp reflecting mirror comprising polyphenylene sulfide, calcium Lamp reflecting mirror comprising polyphenylene sulfide, calcium

1997-03-13

1999-08-31

O'Shea, Sandra

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

313110, 313634, 313636, H01J 516, H01J 6140, H01K 126, H01K 130

Patent

active

059457759

ABSTRACT:
The invention provides a lamp reflecting mirror in which sufficient light reflecting characteristic (surface smoothness) can be obtained without application of any undercoat layer and in which heat resisting property, luminous intensity distributing performance (dimensional stability) and form retaining characteristic (material stiffness) at the time of adjustment of the optical axis can be satisfied at the same time. The lamp reflecting mirror is produced by injection molding a composition containing 30 to 50% by weight of polyphenylene sulfide resin, 5 to 30% by weight of calcium silicate whiskers, and 20 to 65% by weight of granular inorganic filler.

REFERENCES:
patent: 4885321 (1989-12-01), Nitoh et al.
patent: 5589524 (1996-12-01), Ogita et al.

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