Projection lamp bulb and projection lamp using said bulb

A technology for projection lamps and light bulbs, applied in the optical field, can solve the problems of shortened service life of reflective film, low service life of reflective film, shortened service life, etc., and achieve the effect of improving light uniformity, good light uniformity, and avoiding shadows

Inactive Publication Date: 2005-03-02
罗筱泠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lifetime of reflective film is generally low at high temperature
The projection lamp provided by the prior art adopts the direct installation method of the projection lamp bulb and cooperates with the curved reflector, which will greatly shorten the service life of the reflective film of the curved reflector, and even appear to fall off, thereby shortening the service life

Method used

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  • Projection lamp bulb and projection lamp using said bulb
  • Projection lamp bulb and projection lamp using said bulb
  • Projection lamp bulb and projection lamp using said bulb

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] see Image 6 , is a structural schematic diagram of the projection lamp bulb of the present invention. The bulb of the projection lamp of the present invention includes a tubular bulb 610 , an electrode 620 and a glass column 630 . Wherein, the tube-shaped bubble body 610 is located in the middle, and the electrodes 620 are led out from both ends of the tube-shaped bubble body 610 . Moreover, the electrode 620 is wrapped in the glass column 630 . The tubular bubble body 610 is square in cross-section parallel to the polar axis plane, and circular in cross-section perpendicular to the polar axis plane. Since the shape of the bubble body 610 is similar to a hollow tube, it is called a tubular bubble body. Wherein, the tubular bubble body 610 is filled with an appropriate amount of high-pressure mercury vapor or metal halide vapor. Of course, it can also be filled with an appropriate amount of mixed vapor of mercury and metal halides, or other vapors that can generate ...

Embodiment 2

[0050] Such as Figure 8 As shown, the projection lamp in this embodiment includes a projection lamp bulb as a light source and an aspheric reflector 810 matched with the projection lamp bulb. The projection lamp bulb includes a tubular bulb 910 , an electrode 920 and a glass column 930 . Wherein, the tubular bubble body 910 is located in the middle, and the electrodes 920 are led out from both ends of the tubular bubble body 910 . Moreover, the electrode 920 is wrapped in the glass column 930 . The tubular bubble body 910 is square in cross-section parallel to the polar axis plane, and circular in cross-section perpendicular to the polar axis plane. Since the shape of the bubble body 910 is similar to a hollow tube, it is called a tubular bubble body. Wherein, the tubular bubble body 910 is filled with an appropriate amount of high-pressure mercury vapor or metal halide vapor. Of course, it can also be filled with an appropriate amount of mixed vapor of mercury and metal h...

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Abstract

The invention is a projection lamp bulb applied to projecting system, including a bulb body, tow electrodes and two glass columns connected with the bulb body, where the bulb body is in the middle, the two electrodes are on the two sides of the bulb body, respectively, each electrode has an end arranged in the bulb body and the other end led outside the bulb body, and the bulb body is a tube in shape. It cooperates with a nonspherical reflector in a transversely mounting mode, can improve light uniformity, reduce the cost in manufacturing a curved-surface reflector and that of material, and can prolong the service life of the curved-surface reflector.

Description

technical field [0001] The invention relates to the field of optics, in particular to a projection lamp bulb used in a projection system and a projection lamp using the bulb. Background technique [0002] With the development of projection technology, projection systems in various forms such as slide projectors, projectors, projection TVs, movie projectors, and physical booths are widely used in people's work and study. The projection lamp in the projection system includes a projection lamp bulb (light source) and an inner surface curved reflector (hereinafter referred to as the curved reflector). Currently, projection lamp bulbs usually use gas discharge lamps, such as metal halide lamps (ie, metal halide lamps), ultra-high pressure mercury lamps, and the like. The so-called gas discharge lamp refers to a discharge lamp in which the bulb is filled with an appropriate amount of mercury and / or metal halide vapor, which generates arc discharge under the action of the electrod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/14G03B21/20H01J5/02H01J61/02H01J61/30
CPCH01J61/30H01J61/025
Inventor 罗筱泠
Owner 罗筱泠
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