Lamp module with alternating current burner for projectors

A technology of burners and projectors, which is applied to optical elements, instruments, discharge lamps, etc. for changing the spectral characteristics of emitted light, and can solve problems such as shortening the life of high-pressure discharge lamps

Inactive Publication Date: 2009-10-21
OSRAM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the lifetime of the high-pressure discharge lamp in the projector is shortened

Method used

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  • Lamp module with alternating current burner for projectors
  • Lamp module with alternating current burner for projectors

Examples

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Embodiment Construction

[0017] according to figure 1 , the lamp module 1 according to the invention has a schematically shown AC burner 2 arranged in the reflector neck 4 of the reflector 6 and has a discharge vessel 8 with two burner rods 10 , 12, these burner rods support the electrodes 14 on the reflector side and the electrodes 16 on the front side. In the exemplary embodiment shown, the reflector 6 is designed as an ellipsoid. The AC burner 2 embodied as a high-pressure discharge lamp for AC operation together with the reflector 6 forms a pre-installed unit which can be installed in a projector not shown, for example for use with DLP / DMD or LCD technology in digital projectors for data projection or video projection. The discharge vessel 8 of the AC burner 2 is arranged in the reflector 6 so that the formed discharge arc is located at the focal point F of the reflector 6 1 in or adjacent to it. The light generated by the discharge arc in the discharge vessel 8 is imaged by the reflector 6 to...

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Abstract

There is disclosed a lamp module, in particular for projectors for data or video projection, having at least one AC burner that is designed for AC operation, is inserted into a reflector and has a discharge vessel with two burner shafts, arranged diametrically relative to one another that carry a reflector electrode and a front electrode, it being possible for the light emitted by the AC burner to be fed to an optical system via the reflector. According to the invention, the front electrode has a large surface by comparison with the reflector electrode, such that said surface is more resistant to retroreflected light.

Description

technical field [0001] The invention relates to a lamp module, in particular a lamp module for a projector for data projection or video projection, which has at least one AC burner (AC-Brenner) designed for AC operation, the AC burner being arranged In the reflector there is also a discharge vessel with two burner rods, which support the reflector-side electrode and the front-side electrode, wherein the light emitted by the burner can be fed to the optical system via the reflector. Background technique [0002] Since the invention of DLP technology, the market for digital projectors for data projection or video projection has grown tremendously worldwide. The growing popularity is due in particular to the fact that, thanks to the technology used, projectors can be produced more and more cheaply and realized compactly in their size, making them possible for mobile use in everyday offices. Here, a solution is required that maintains as much brightness as possible on the scree...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00H01J61/04F21V7/04F21V9/10G03B21/20F21V9/40
CPCH01J61/86H01J61/0732
Inventor 亨宁·雷恩
Owner OSRAM GMBH
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