Light collection system and projection device employing same
A projection device and light-collecting technology, applied in projection devices, optics, instruments, etc., can solve the problems of damage to two light sources, shortened life of two light sources, etc., to solve the problems of easy damage, prolong service life, and simplify structural design Effect
Inactive Publication Date: 2018-09-07
QISDA OPTRONICS (SUZHOU) CO LTD +1
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Problems solved by technology
However, since the two light sources may emit light to each other, the above design is prone to damage of the two light sources, resulting in a shortened life of the two light sources
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[0018] In order to have a further understanding of the purpose, structure, features and functions of the present invention, detailed descriptions are provided below in conjunction with the embodiments.
[0019] Please refer to figure 1 , figure 1 It is a schematic diagram of a projection device 10 according to an embodiment of the present invention. The projection device 10 may preferably be a DLP projector, but is not limited to this, which means that the present invention can be applied to other types of optical projectors in another embodiment, such as a liquid crystal projector. Such as figure 1 As shown, the projection device 10 includes a light collection system 12, a light splitting system 14 and a projection lens system 16. The light collecting system 12 includes a light collecting rod 18, a triangular prism 20, a first light source 22, and a second light source 24. The light collecting rod 18 has a light collecting axis I, a first light incident surface S1, a second ligh...
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The invention discloses a light collection system and a projection device employing the same. The light collection system comprises a prism, a light collection post, a first light source and a secondlight source, wherein the first light source and the second light source are arranged in a staggered way, the light collection post is provided with a light collection shaft, a first incident surface,a second incident surface, a first reflection inclined surface and a first light giving-out surface, the prism is near to the second incident surface and is provided with a third incident surface, asecond light giving-out surface and a second reflection inclined surface, a light beam of the first light source irradiates the light collection post through the first incident surface, is reflected by the first reflection inclined surface and is emitted out from the first light giving-out surface along a direction of the light collection surface, and a light beam of the second light source irradiates the prism through the third incident surface, is reflected by the second reflection inclined surface, sequentially penetrates through the second light giving-out surface and the second incident surface along the direction of the light collection shaft and is emitted out from the first light giving-out surface. By the light collection system, the structural design of the light collection postis simplified, the projection device is also allowed to be installed by 360 degrees, moreover, the light sources are difficult to damage, and the service lifetime of the light sources is prolonged.
Description
Technical field [0001] The present invention relates to a light collection system and a projection device using the same, and more specifically, to a light collection system and a projection device having a triangular prism and two light sources, wherein the triangular prism is arranged adjacent to the light collecting column, and the The two light sources are respectively aligned with the light collecting rod and the prism. Background technique [0002] In recent years, projection devices, such as liquid crystal projectors, DLP (Digital Light Processing) projectors, etc., are becoming popular. Generally, two light sources are provided in the projection device to provide the light required for color image projection, and the light collecting rod is arranged between the two light sources and aligned with the two light sources to aggregate the light emitted by the two light sources to ensure projection The uniformity of the projected image of the device. For example, US Publicati...
Claims
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IPC IPC(8): G03B21/20
CPCG03B21/20G03B21/2013G03B21/2066G03B21/208G03B21/2026
Inventor 简志雄林明坤
Owner QISDA OPTRONICS (SUZHOU) CO LTD