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公开(公告)号：US20240310707A1
公开(公告)日：2024-09-19
申请号：US18615734
申请日：2024-03-25
发明人： Wei LI , Youliang TIAN , Xianrong LIU , Xiaoqiang GU
CPC分类号： G03B21/204 , G02B26/008 , G03B21/2066 , G03B21/208 , G02B27/14
摘要： A laser projection apparatus includes a laser source assembly, a light modulation assembly, and a projection lens. The laser source assembly includes a laser device, a microlens array, a combining component, and a phosphor wheel. The microlens array is configured to increase divergence angles of the plurality of laser beams in a slow axis direction and a fast axis direction, so as to make a ratio of divergence angles of the laser beams diverged by the microlens array in the slow axis direction and the fast axis direction be proportional to a length-width ratio of the light inlet of the light pipe. The combining component is configured to reflect laser beams and a fluorescent beam exiting from the phosphor wheel and transmit the plurality of laser beams emitted by the laser device. The phosphor wheel is configured to reflect the laser beams and be excited to emit the fluorescent beam.
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公开(公告)号：US20230359113A1
公开(公告)日：2023-11-09
申请号：US17729489
申请日：2022-04-26
发明人： Wei LI , Xiaoqiang GU , Wuyue HAN , Youliang TIAN
CPC分类号： G03B21/204 , G03B33/12 , G03B21/2066
摘要： A laser source includes a light-emitting assembly, a phosphor wheel, a converging lens group, and a combining component. The combining component is disposed between the light-emitting assembly and the converging lens group. The combining component has a plurality of light reflecting regions and a plurality of laser transmitting regions, and the plurality of light reflecting regions and the plurality of laser transmitting regions are alternately arranged. The plurality of laser transmitting regions are configured to transmit the laser beam emitted by the light-emitting assembly, and the plurality of light reflecting regions are configured to reflect a laser beam reflected by the laser-reflecting region of the phosphor wheel and a fluorescent beam excited by the fluorescence-exciting region of the phosphor wheel toward a beam outlet of the laser source.
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公开(公告)号：US20230288793A1
公开(公告)日：2023-09-14
申请号：US18319740
申请日：2023-05-18
发明人： Wei LI , Xiaoqiang GU
CPC分类号： G03B21/204 , G03B33/12
摘要： Provided is a laser optical path system, including: a laser, a beam combiner, a loop guide assembly, and a fluorescence assembly; wherein a light beam emitted by the laser includes a first light beam passing through the first region and irradiating to the fluorescence assembly, wherein the fluorescence assembly generates a fluorescence upon excitation of the first light beam, and the fluorescence is reflected to the second region by the fluorescence assembly, and is further reflected into a direction towards a light outlet by the second region; and the light beam emitted by the laser further includes a second light beam reflected to the loop guide assembly by the first region, wherein the second light beam is further reflected to the first region by the loop guide assembly, passes through the first region, and irradiates to the direction towards the light outlet in synchronization with the fluorescence.
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公开(公告)号：US20230020534A1
公开(公告)日：2023-01-19
申请号：US17946318
申请日：2022-09-16
发明人： Wei LI , Xiaoqiang GU , Youliang TIAN
摘要： A laser projection apparatus includes a laser source assembly, an optical engine and a projection lens. The laser source assembly includes a laser device and a combining lens group. The laser device includes a first laser-exit region emitting laser beams of first color, a second laser-exit region emitting laser beams of second color, and a third laser-exit region emitting laser beams of third color. The combining lens group includes a plurality of combining lenses and a beam spot adjustment structure. The beam spot adjustment structure is disposed in beam paths of the laser beams of first color and the laser beams of second color before being combined with the laser beams of third color, and the beam spot adjustment structure is configured to increase a divergence angle of at least one of the laser beams of first color or the laser beams of second color.
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