Diffuser for an arc discharge lamp
AssigneeGTE Products Corporation
InventorJohn J. Zwald
Life of this patent
Estimating the term…
Abstract
A diffuser for an arc discharge lamp having a sealed envelope of light-transmitting vitreous material including at least two longitudinally extending leg members spaced a predetermined distance thereapart and joined together by a transversely extending envelope portion. The diffuser is formed for disposal adjacent the leg members in a predetermined alignment to provide an appearance of a substantially uniform light output from the entirety of the envelope during operation of the lamp. Preferably, the diffuser includes a longitudinally bifurcated member having two leg sections joined together by an intermediate section and can easily be attached to the arc discharge lamp and subsequently removed therefrom upon failure of the lamp.
Claims20
A diffuser for an arc discharge lamp, said lamp having a sealed envelope of light-transmitting vitreous material and having a pair of end portions and including at least two longitudinally extending leg members having a predetermined spacing therebetween and a transversely extending envelope portion joining said longitudinally extending leg members, said diffuser comprising means having light-scattering properties and formed for disposal adjacent said leg members in a predetermined alignment with said predetermined spacing between said leg members to provide an appearance of a substantially uniform light output from the entirety of said envelope during operation of said lamp.
An arc discharge lamp comprising:
- a sealed envelope of light-transmitting vitreous material having a pair of end portions and including at least two longitudinally extending leg members having a predetermined spacing therebetween, said leg members being joined together by a transversely extending envelope portion, an ionizable medium contained within said envelope, an electrode located within each of said end portions, and a phosphor layer disposed on the internal surface of said envelope;
- and
- a diffuser disposed adjacent said leg members in a predetermined alignment with said predetermined spacing between said leg members to provide an appearance of a substantially uniform light output from the entirety of said envelope during operation of said lamp.
Dependencies are inferred from the claim text.