Enclosed high pressure discharge lamp
View Patent ↗In various embodiments, a high-pressure discharge lamp is provided. The high-pressure discharge lamp may include a discharge vessel which is accommodated in a tubular outer bulb, wherein a major part of the outer bulb is closely surrounded by a transparent sleeve composed of highly heat-resistant plastic.
1. A high-pressure discharge lamp, comprising:
a discharge vessel which is accommodated in a tubular outer bulb, wherein a major part of the outer bulb is closely surrounded by a transparent sleeve composed of highly heat-resistant plastic.
2. The high-pressure discharge lamp as claimed in claim 1 , wherein the discharge vessel is manufactured from ceramic.
3. The high-pressure discharge lamp as claimed in claim 2 , wherein the discharge vessel has two capillaries.
4. The high-pressure discharge lamp as claimed in claim 1 , wherein the sleeve is in the form of a shrink sleeve.
5. A high-pressure discharge lamp, comprising:
a discharge vessel which is accommodated in a tubular outer bulb, wherein a major part of the outer bulb is closely surrounded by a transparent sleeve composed of highly heat-resistant plastic; and
wherein a tube surrounds the outer bulb at the level of the discharge vessel, below the sleeve, wherein the material of the tube is more heat-resistant than that of the sleeve.
6. The high-pressure discharge lamp as claimed in claim 5 , wherein the tube is manufactured from hard glass or quartz glass.
7. The high-pressure discharge lamp as claimed in claim 5 , wherein the tube is seated on the outer bulb by means of a spacer.
8. The high-pressure discharge lamp as claimed in claim 5 , wherein a spacer is formed by projections in the form of studs.
9. The high-pressure discharge lamp as claimed in claim 5 ,
wherein a spacer is a holding ring composed of metal, which has a holding apparatus for the tube.
10. The high-pressure discharge lamp as claimed in claim 1 , wherein the outer bulb has an outward bulge.