Bulb

Details Bulb Bulb

1984-08-17

1987-01-06

Moore, David K.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

313112, F21M 314

Patent

active

046349197

ABSTRACT:
There is proposed a bulb which is coated with an optical interference film consisting of alternately formed thin titanium oxide layers and metal oxide layers of a lower refractive index than that of titanium oxide layers. The characteristics of the bulb reside in the formation of each titanium oxide layer which is formed by thermal decomposition of a mixture consisting of 5 to 50 parts by weight of Ti(OR).sub.4 and 95 to 50 parts by weight of polymerized Ti(OR).sub.4, where R are C.sub.1 to C.sub.18 alkyl group, --OCOR' (R' is C.sub.1 to C.sub.18 alkyl group or --X radical which is capable of forming a chelate ring with titanium.

REFERENCES:
patent: 4227113 (1980-10-01), Walsh
patent: 4346324 (1982-08-01), Yoldas
patent: 4361598 (1982-11-01), Yoldas
patent: 4425527 (1984-01-01), Sichel
patent: 4504109 (1985-03-01), Taga et al.
patent: 4524410 (1985-06-01), Kawakatsu et al.
H. Schroeder, "Oxide Layers Deposited from Organic Solutions", Phys. of Thin Films, vol. 15, p. 87, 1969.
H. Schroeder, "Properties and Applications of Oxide Layers Deposited on Glass from Organic Solutions", Opt. Acta., vol. 9, p. 249, 1962.

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