Lighting system and projection device
一种照明系统、照明光束的技术，应用在照明装置、照明装置的零部件、放映装置等方向，能够解决成本高昂、投影画面颜色均匀度不佳、系统架构体积缩小不易等问题，达到良好画面品质、小体积的效果
Pending Publication Date: 2020-05-22
CORETRONIC
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Problems solved by technology
However, the incident angle of the excitation beam penetrating the phosphor wheel into the integrating column is much smaller than the incident angle of the excited light entering the integrating column, thus causing poor color uniformity of the projected image
Moreover, the system optical path of this projection device needs to be designed with an additional loop, which has the problems of difficulty in reducing the size of the system architecture and high cost
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[0025] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.
[0026] figure 1 It is a schematic structural diagram of a projection device according to an embodiment of the present invention. Figure 2A yes figure 1 A schematic diagram of the transfer area and the splitting area of a spectroscopic module. Figure 2B yes figure 1 A schematic diagram of the front view of a wavelength conversion module. Figure 3A yes figure 1 Schematic diagram of the optical path of the wavelength-converted beam of the illumination system. Figure 3B is throug...
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Abstract
A lighting system provided by the invention comprises a laser light source, a wavelength conversion module, a light splitting module and a light homogenization element. The light splitting module hasa transmission area and a light splitting area. The excitation light beam of the excitation light source enters the wavelength conversion module from the transmission area; the excitation light beam is converted into at least one wavelength conversion light beam by at least one wavelength conversion area of the wavelength conversion module, the excitation light beam is reflected by the reflectionarea of the wavelength conversion module, and the excitation light beam from the wavelength conversion module forms a first sub-excitation light beam and a second sub-excitation light beam through thelight splitting area of the light splitting module. The first sub-excitation light beam and the second sub-excitation light beam form an excitation light combination light beam. The light homogenizing element is used for homogenizing the excitation combined light beam and the at least one wavelength conversion light beam, and the angle of the excitation combined light beam entering the light homogenizing element is 0.25 times larger than the angle of the at least one wavelength conversion light beam entering the light homogenizing element. The image picture projected by the projection deviceprovided by the invention has good picture quality.
Description
technical field [0001] The invention relates to an illumination system and a projection device. Background technique [0002] Recently, projection devices based on solid-state light sources such as light-emitting diodes (LEDs) and laser diodes (laser diodes) gradually occupy a place in the market. Since laser diodes have a luminous efficiency higher than about 20%, in order to break through the light source limitation of light emitting diodes, laser light sources are used to excite phosphors to produce pure color light sources for projectors. [0003] Generally speaking, the known projection device architecture has optical elements such as excitation light source (ie blue laser array), phosphor wheel (Phosphor Wheel), filter wheel (Filter Wheel), integrating column, light valve and projection lens, wherein the excitation The excitation light beam provided by the light source passes through the optical element, and then outputs colored light in time sequence through the phos...
Claims
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IPC IPC(8): G03B21/20
CPCG03B21/204G03B21/208G03B21/206G03B21/2066F21V9/40G03B21/2033G03B33/08
Inventor 范辰玮邱浩玮杨德生廖建中
Owner CORETRONIC