Light source component and projector
A technology of light source components and light sources, applied in optics, instruments, projection devices, etc.
Active Publication Date: 2016-06-22
SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology
[0003] In some occasions, high-brightness projection display is required. High-brightness projection display can be realized by increasing the number of blue excitation light sources, but when the number of blue lasers is increased, the spot size will also increase. The excited fluorescent spot also increases accordingly, but the size of the display chip in a specific projector is certain, so increasing the number of blue lasers to increase the brightness has certain limitations
Method used
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0020] see figure 1 and figure 2 , The light source assembly provided by the preferred embodiment of the present invention is used in a projector to provide a light source for the projector. The light source assembly includes a rotating wheel 10 , a phosphor wheel 20 , a first light source 30 , a second light source 40 , a dichroic mirror 50 and a collimating mirror 60 . The phosphor wheel 20 includes a phosphor layer 21 , a selective reflection film layer 22 an...
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Abstract
The invention provides a light source component, which comprises a rotating wheel, a fluorescent powder wheel, a first light source, a second light source, a dichroscope and a collimating mirror, wherein the fluorescent powder wheel comprises a fluorescent powder layer, a selective reflection film and a substrate which are stacked in sequence; the dichroscope is obliquely inclined to the fluorescent powder layer; the collimating mirror is arranged between the dichroscope and the fluorescent powder wheel; one side of the fluorescent powder wheel, which is provided with the substrate, is connected to the rotating wheel and rotates along with the rotating wheel; the exciting light of the first light source is reflected by the dichroscope to pass through the collimating mirror to enter the fluorescent powder layer, the exciting light of the second light source is incident on the fluorescent powder layer from one side of the substrate, and the first light source and the second light source have the same shot point at the fluorescent powder layer; after the exciting light of the first light source and the exciting light of the second light source are absorbed by the fluorescent powder layer, the yellow fluorescence is emitted and is reflected by the selective reflection film to pass through the collimating lens and then be converged on one light path by the dichroscope and be emitted. The invention also provides a projector.
Description
technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a light source assembly and a projector. Background technique [0002] Traditional projectors use light bulbs as light sources, but the life of light bulbs is relatively short, generally only 2,000 to 4,000 hours. In recent years, a technology that uses lasers as light sources for projectors has emerged, and its lifespan can reach more than 25,000 hours. At present, the most commonly used solution is to use blue laser to excite phosphor to produce yellow light, yellow light and blue light to synthesize white light, and then form red, green and blue three-color light through color filtering. [0003] In some occasions, high-brightness projection display is required. High-brightness projection display can be realized by increasing the number of blue excitation light sources, but when the number of blue lasers is increased, the spot size will also increase. The excit...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G03B21/20
CPCG03B21/2013G03B21/204G03B21/2066
Inventor 徐向阳
Owner SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD