Light source, projection display apparatus and lamp

一种光装置、光源的技术，应用在光源领域，能够解决荧光粉效率下降、发光亮度限制等问题，达到提升发光亮度的效果

Active Publication Date: 2017-06-13
APPOTRONICS CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, even with this scheme, there is still an upper limit to the energy density of the excitation light: once this limit is exceeded, the efficiency of the phosphors on the color wheel drops rapidly
Therefore, the luminous brightness of this scheme is still limited by this upper limit, and at the same time, a light source with higher brightness is required on the market

Method used

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  • Light source, projection display apparatus and lamp
  • Light source, projection display apparatus and lamp
  • Light source, projection display apparatus and lamp

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Embodiment Construction

[0019] The structure diagram of the light source of the first embodiment of the present invention is as follows figure 1 shown. In this embodiment, the light source 100 includes a first excitation source 101 for emitting a first excitation light 141 and a second excitation source 102 for emitting a second excitation light 142 . The first excitation light and the second excitation light may be a laser light source, an LED light source, or a mixed light source of laser and LED, but are not limited to the above examples. The light source 100 also includes a wavelength conversion wheel 103, and the wavelength conversion wheel 103 includes a stacked wavelength conversion layer 105 and a first reflective polarizer 106; the light source 100 also includes a first driving device 107 for driving the wavelength conversion layer 105 and the second A reflective polarizer 106 rotates. Wherein, the first excitation light 141 and the second excitation light 142 are respectively incident on ...

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Abstract

The invention provides a light source, a projection display apparatus and a lamp. The light source comprises a first excitation source and a second excitation source, and also comprises a wavelength conversion wheel; the wavelength conversion wheel comprises a wavelength conversion layer and a first reflective type polarizing film which are arranged in a stacked manner; the wavelength conversion wheel also comprises a first driving apparatus used for driving the wavelength conversion layer and the first reflective type polarizing film to turn; first excitation light and second excitation light are incident to a first position and a second position of the wavelength conversion wheel respectively to excite the wavelength conversion layer so as to emit first light with a first polarizing direction and second light with a second polarizing direction from the first position and the second position respectively; and the first light and the second light form mixed light in a position of a polarizing light mixing apparatus. According to the light source, the projection display apparatus and the lamp disclosed by the invention, based on the polarization property of the first light and the second light, the first light and the second light are combined into one beam through the polarizing light mixing apparatus, so that the luminance is greatly improved.

Description

[0001] This application is a divisional application based on the patent application with the application number 201210190879.1, the title of the invention is "Light Source, Projection Display Device and Lamp", and the filing date is 2012-06-11 technical field [0002] The invention relates to the field of light sources, in particular to a high-brightness light source, a projection display device and a lamp based on the light source. Background technique [0003] At present, there is an increasing demand for high-brightness light sources in various fields, such as the fields of projection display and projection lighting, which require high luminance of the illumination source. [0004] A currently feasible solution is to use excitation light to excite a high-speed rotating fluorescent pink wheel to generate high-brightness stimulated light. Due to the high-speed rotation of the color wheel, the local phosphor is excited and generates heat only in an instant. Therefore, this s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20F21V9/40
CPCG03B21/204G03B21/2073
Inventor 杨毅
Owner APPOTRONICS CORP LTD
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