Light conversion element, light source system and display device
A light conversion element and light source system technology, which is applied in projection devices, optics, instruments, etc., can solve the problems of large volume, increased light source volume and cost, and insufficient light efficiency of the light source, so as to reduce the volume, improve the utilization rate of light, The effect of high brightness display
Active Publication Date: 2020-11-27
APPOTRONICS CORP LTD
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Problems solved by technology
With the improvement of display requirements, the laser-excited phosphor technology has also encountered unprecedented problems. On the one hand, when the light source is used in portable devices such as micro-projectors, the problem of large volume will not be overcome; on the other hand, the light source’s The luminous efficiency is not high enough. If the luminous efficiency is further improved, new components need to be added, which will inevitably increase the volume and cost of the light source; moreover, if the current or voltage is increased without adding new components, it will affect the The life of solid-state light source is a great test
Method used
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Embodiment Construction
[0038] see figure 1 , figure 1 It is a schematic structural diagram of a light source system provided by an embodiment of the present invention. Such as figure 1 As shown, the light source system 10 of this embodiment includes a heat sink 1 , a light source 2 , a uniform light element 3 , a light conversion element 4 and a collection element 5 .
[0039] Wherein, the light source 2 is used for emitting excitation light. In this embodiment, the light source 2 is preferably a solid-state light source. The light source 2 is a laser light source and / or an LED light source. Wherein, the laser light source can be in the form of a single laser or in the form of a laser array. Similarly, the LED light source can be in the form of a single LED or in the form of an LED array. The light source 2 can also be other light sources, which is not limited here.
[0040] The heat sink 1 is used to dissipate heat from the light source 2 . Specifically, the light source 2 of this embodimen...
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The invention discloses a light conversion element, a light source system and a display device, wherein the light conversion element comprises an incident area, a light-emitting unit, a reflection area, a light-emitting area and a light recovery area, wherein the incident area, the light-emitting unit, the reflection area and the light-emitting area are enclosed to form a space structure; the reflection area is arranged around the light-emitting unit; the incident area is used for incident excitation light; the light-emitting unit is used for receiving incident exciting light to generate excited light. The reflection area is used for reflecting at least part of excited light to the light emitting area and reflecting exciting light which is not absorbed by the light emitting unit to the light emitting unit; the light emitting area is used for emitting at least part of excited light; the light recovery area is used for reflecting the exciting light and / or excited light entering the lightrecovery area. By means of the mode, the size of the product can be reduced, the cost is reduced, and meanwhile the light utilization rate is increased to achieve high-brightness display.
Description
[0001] This application is a divisional application based on the patent application with the application number 201710053442.6 and the title of the invention "A light conversion element, light source system and display device" filed on January 22, 2017. technical field [0002] The invention relates to the field of display technology, in particular to a light conversion element, a light source system and a display device. Background technique [0003] Among the existing projection light sources, in addition to using light bulbs and pure lasers as light sources, there is another popular and popular light source technology: using excitation light to excite a rotating fluorescent pink wheel or a fixed phosphor sheet to generate sequential light. Or emit white light. [0004] Among the above-mentioned technologies, the laser-excited rotating color wheel or the laser-excited phosphor technology that excites a fixed phosphor sheet has improved brightness compared with existing LED...
Claims
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IPC IPC(8): G03B21/20
CPCG03B21/204G03B21/2066G03B21/20
Inventor 胡飞郭祖强李屹
Owner APPOTRONICS CORP LTD