Electric lamp having an envelope with a specular light-reflectiv

Details Electric lamp having an envelope with a specular light-reflectiv Electric lamp having an envelope with a specular light-reflectiv

1974-03-20

1976-01-13

Brody, Alfred L.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

240 413, 313116, 427106, H01K 132

Patent

active

039327809

ABSTRACT:
A selected part of the envelope of a fabricated electric lamp is made light-reflecting by spraying it with a coating composition that contains aluminum flakes of such minute size that they inherently arrange themselves in planar relationship and form a specular film as the composition dries. A protective coating of a suitable heat-resistant material, such as silicone plastic, is then sprayed over the reflective film and cured. The protective coating can also contain aluminum particles in order to fill voids that may be left in the thin specular film and to make the latter more opaque.

REFERENCES:
patent: 2875087 (1959-02-01), Crandon
patent: 3281620 (1966-10-01), Miller
patent: 3536946 (1970-10-01), Kopelman et al.
patent: 3692731 (1972-09-01), McAdow
patent: 3697070 (1972-10-01), McAdow
patent: 3721850 (1973-03-01), Giller

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