Discharge lamp and illumination apparatus
AssigneeSony Corporation
InventorYukio Hara
Life of this patent
Estimating the term…
Abstract
A discharge lamp (1) includes a glass tube (2) having electrodes (3) with an electron radioactive material coated thereon, the electrodes (3) being provided on respective ends of the glass tube (2), wherein the glass tube (2) has a gas containing a luminescent material sealed therein and has a fluorescent material coated on its inner surface, the glass tube (2) has a diameter less than 6.5 mm and the gas sealed into the glass tube (2) is gases of more than one kind selected from an Ar (argon) gas, a Kr (krypton) gas and a Xe (xenon) gas or a mixed gas mainly made of gases of more than one kind selected from the Ar gas, the Kr gas and the Xe gas. Thus, the discharge lamp (1) can reduce a diameter of its tube and it is able to provide high luminous efficiency.
Claims4
A discharge lamp comprising:
- a glass tube having electrodes with an electron radioactive material coated thereon, said electrodes being provided on respective ends of said glass tube, wherein said glass tube has a gas containing a luminescent material sealed therein and has a fluorescent material coated on its inner surface, said glass tube has a diameter less than 6.5 mm and said gas sealed into said glass tube is gases of more than one kind selected from an Ar (argon) gas, a Kr (krypton) gas and a Xe (xenon) or a mixed gas mainly made of gases of more than one kind selected from the Ar gas, the Kr gas and the Xe gas.
An illumination apparatus comprising:
- a discharge tube, said discharge tube being composed of:
- a glass tube having electrodes with an electron radioactive material coated thereon, said electrodes being provided on respective ends of said glass tube, wherein said glass tube has a gas containing a luminescent material sealed therein and has a fluorescent material coated on its inner surface, said glass tube has a diameter less than 6.5 mm and said gas sealed into said glass tube is gases of more than one kind selected from an Ar (argon) gas, a Kr (krypton) gas and a Xe (xenon) gas or a mixed gas mainly made of gases of more than one kind selected from the A gas, the Kr gas and the Xe gas.
Dependencies are inferred from the claim text.