THERMALLY IMPROVED LAMP

• US 20110050075A1
• Filed: 02/05/2008
• Published: 03/03/2011
• Est. Priority Date: 02/05/2008
• Status: Abandoned Application

• Current Assignee: OSRAM GmbH (Ams-Osram AG)
• Original Assignee: OSRAM GmbH (Ams-Osram AG)
• Inventors: Kroell, Josef
• Application Number:
  US12/866,243
• Publication Number:
  US 20110050075A1
• Time in Patent Office: Days
• US Class Current: 313/110
• CPC Class Codes: H01J 61/35 provided with coatings on the walls thereof; Selection of materials for the coatings using coloured coatings H01J61/40; using luminescent coatings H01J61/42
• CPC Class Codes: H01K 1/32 provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof

Abstract

A lamp having a lamp vessel is provided, the lamp vessel having a shaft, through which a power supply line extends; and a metallically conductive coating on the outer side of the shaft, wherein the maximum layer thickness of the coating is 30 nm, and the layer thickness is designed to minimize the reflection of infrared radiation generated in the lamp.

Claims

1. A lamp having a lamp vessel, the lamp vessel comprising:

a shaft, through which a power supply line extends; and

a metallically conductive coating on the outer side of the shaft,

wherein the maximum layer thickness of the coating is 30 nm, and the layer thickness is designed to minimize the reflection of infrared radiation generated in the lamp.

2. The lamp as claimed in claim 1,

wherein the coating is applied only in the region of the shaft.

3. The lamp as claimed in claim 1,

wherein the layer thickness is at least 2 nm.

4. The lamp as claimed in claim 1,

wherein the power supply line in the shaft has a molybdenum film.

5. The lamp as claimed in claim 1,

wherein the material of the coating is selected from the group consisting of:

chromium;

platinum;

iridium;

tungsten;

nickel;

titanium; and

alloys, mixtures and multiple layers thereof.

6. The lamp as claimed in claim 1, further comprising:

two vessel shafts on sides that are each opposite the location of light generation.

7. The lamp as claimed in claim 1, said lamp being a high-pressure gas discharge lamp.

8. A use of a lamp for projection, the lamp comprising:

a lamp vessel, the lamp vessel comprising;

a shaft, through which a power supply line extends; and

a metallically conductive coating on the outer side of the shaft,

wherein the maximum layer thickness of the coating is 30 nm, and the layer thickness is designed to minimize the reflection of infrared radiation generated in the lamp.

9. A use of a lamp, the lamp comprising:

a lamp vessel, the lamp vessel comprising;

a shaft, through which a power supply line extends; and

a metallically conductive coating on the outer side of the shaft,

wherein the maximum layer thickness of the coating is 30 nm, and the layer thickness is designed to minimize the reflection of infrared radiation generated in the lamp, for at least one selected from a group consisting of;

film lighting;

photographic lighting; and

stage lighting.

10. A process for manufacturing a lamp, the lamp comprising:

a lamp vessel, the lamp vessel comprising;

a shaft, through which a power supply line extends; and

a metallically conductive coating on the outer side of the shaft,

wherein the maximum layer thickness of the coating is 30 nm, and the layer thickness is designed to minimize the reflection of infrared radiation generated in the lamp,

the method comprising

applying an electrically conductive coating to the outer side of a shaft of the lamp, through which shaft a power supply line extends, in such a way as to obtain a maximum layer thickness of 30 nm; and

designing the layer thickness to minimize the reflection of infrared radiation generated in the lamp.

11. The process as claimed in claim 10,

wherein the coating takes place by inductively coupled plasma enhanced chemical vapor deposition.