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公开(公告)号:US20230198219A1
公开(公告)日:2023-06-22
申请号:US18107379
申请日:2023-02-08
发明人: Wei Li , Xiaoqiang Gu , Youliang Tian
IPC分类号: H01S5/02253 , H01S5/02315 , H01S5/0233 , H01S5/40 , G02B27/30
CPC分类号: H01S5/02253 , G02B27/30 , H01S5/0233 , H01S5/02315 , H01S5/4087 , H01S5/02216
摘要: A laser device includes a base plate, a plurality of light-emitting chips, a frame and a collimating lens group. The plurality of light-emitting chips are configured to emit laser beams. The laser beams emitted by the plurality of light-emitting chips each have a first axis and a second axis. The collimating lens group is disposed on a side of the frame away from the base plate, and includes a plurality of collimating lenses. The plurality of collimating lenses correspond to the plurality of light-emitting chips. The collimating lens is configured to reduce a divergence angle of the laser beam incident on the collimating lens, so as to make a reduction of the divergence angle of the laser beam passing through the collimating lens in the first axis less than a reduction of the divergence angle of the laser beam passing through the collimating lens in the second axis.
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公开(公告)号:US12117719B2
公开(公告)日:2024-10-15
申请号:US18071438
申请日:2022-11-29
发明人: Wei Li , Xiaoqiang Gu , Tiantian Tang , Wuyue Han , Youliang Tian
CPC分类号: G03B21/204 , G03B21/2053 , G03B21/2066 , H04N9/317 , G02B26/008
摘要: A laser projection apparatus includes a laser source, an optical engine and a projection lens. The optical engine includes a light homogenizing component. The laser source includes a light-emitting assembly, a combining component, a first lens, a phosphor wheel and a laser dimming component. The combining component includes a reflecting portion and a transmitting portion. The phosphor wheel includes a first region and a second region. The laser dimming component is located between the light-emitting assembly and the phosphor wheel, and configured to increase Etendue of a laser beam emitted by the light-emitting assembly and change a shape of a beam spot provided by the laser beam on the phosphor wheel, so as to make a beam spot provided by the laser beam and the fluorescent beam at a beam inlet of the light homogenizing component matched with a shape of the beam inlet of the light homogenizing component.
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公开(公告)号:US20240012318A1
公开(公告)日:2024-01-11
申请号:US18471557
申请日:2023-09-21
发明人: Ke Yan , Youliang Tian , Wei Li , Xianrong Liu
CPC分类号: G03B21/2033 , G03B21/2013 , G03B21/208 , G02B27/48 , G03B21/005 , G03B21/2073 , G03B21/2066
摘要: Provided is a light source, comprising at least one laser array, a light combining assembly, and a fly-eye lens; wherein the at least one laser array is configured to emit at least two colors of laser light; the light combining assembly is disposed on a light-output side of the at least one laser array and is configured to guide the laser light emitted from the at least one laser array to the fly-eye lens; the fly-eye lens is disposed on a light-output side of the light combining assembly and is configured to homogenize the laser light emitted from the at least one laser array; wherein the fly-eye lens comprises: a substrate; a plurality of first microlenses disposed on a light-incident surface of the substrate; and a plurality of second microlenses disposed on a light-output surface of the substrate.
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公开(公告)号:US20240004278A1
公开(公告)日:2024-01-04
申请号:US18468599
申请日:2023-09-15
发明人: Ke Yan , Wei Li , Youliang Tian
IPC分类号: G03B21/20
CPC分类号: G03B21/2033 , G03B21/2013 , G03B21/2066 , G03B21/208
摘要: Provided is a light source. The light source includes a laser array including a substrate, and a first row of laser chips and a second row of laser chips disposed on the substrate. The first row of laser chips includes at least one first-color laser chip and at least one second-color laser chip, the first-color laser chip and the second-color laser chip emitting laser beams of different colors, and the second row of laser chips includes at least three third-color laser chips, central wavelengths of two adjacent third-color laser chips in the second row of laser chips being different.
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公开(公告)号:US20230119932A1
公开(公告)日:2023-04-20
申请号:US18083167
申请日:2022-12-16
发明人: Ke Yan , Wei Li , Wuyue Han , Youliang Tian
摘要: A laser projection apparatus includes a laser source, a light modulating engine and a projection lens. The laser source includes a laser device, a combining component, a first lens and a phosphor wheel. The combining component includes a reflecting region and two transmitting regions. The reflecting region is configured to reflect a laser beam and a fluorescent beam incident on the reflecting region. The two transmitting regions are disposed on two sides of the reflecting region respectively, and the transmitting regions are configured to transmit a plurality of laser beams emitted by the laser device. The phosphor wheel includes a first region and a second region. The first region is configured to diffuse and reflect the laser beams incident on the first region. The second region is configured to be excited to emit a fluorescent beam due to irradiation of the laser beams incident on the second region.
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公开(公告)号:US11079665B2
公开(公告)日:2021-08-03
申请号:US16744722
申请日:2020-01-16
发明人: Ke Yan , Youliang Tian , Wei Li , Yun Zhao
摘要: The present disclosure describe embodiments of a laser projection apparatus. The apparatus includes: an apparatus housing, a laser source system, an optical illumination system and a lens system. The laser source system includes: a first laser assembly configured to emit a first laser beam, a second laser assembly configured to emit a second laser beam and a third laser assembly configured to emit a third laser beam; a first laser combining lens configured to reflect the third laser beam; a second laser combining lens configured to transmit the second laser beam and reflect the third laser beam; and a third laser combining lens configured to transmit the first laser beam and reflect the second and third laser beams. The optical illumination system is configured to modulate laser beams to generate a modulated beam. The lens system is configured to project the modulated beam onto a projection screen.
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公开(公告)号:US12078814B2
公开(公告)日:2024-09-03
申请号:US17587515
申请日:2022-01-28
发明人: Wei Li , Youliang Tian , Xintuan Tian
CPC分类号: G02B27/143 , G02B26/06 , G02B27/0933 , G02B27/0938 , G02B27/14 , G03B21/008 , G03B21/2013 , G03B21/2033 , G03B21/2073 , G03B21/208 , H01S5/4012 , H01S5/4093 , H01S5/005
摘要: A laser projector includes a laser assembly, a beam combination mirror group and a phase delaying component. The laser assembly includes a red laser light emitting region, a blue laser light emitting region and a green laser light emitting region. Red laser light is polarized in a first direction, green laser light is polarized in a second direction, and blue laser light is polarized in a third direction. The beam combination mirror group combines the red laser light, the blue laser light and the green laser light. The phase delaying component is on a light emitting path of at least one of the red laser light, the blue laser light the green laser light, and changes a polarization direction of the at least one of the red laser light, the blue laser light or the green laser light before being output by the beam combination mirror group.
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公开(公告)号:US10989995B2
公开(公告)日:2021-04-27
申请号:US16497729
申请日:2019-09-19
发明人: Zinan Zhou , Youliang Tian , Wei Li
摘要: The present disclosure describes a laser assembly. The laser assembly includes a support comprising at least one mounting groove. The laser assembly includes at least one laser mounted in the at least one mounting groove in a one-to-one correspondence. Each of the at least one laser includes a light emitting component configured to emit a light beam. A beam-shaping component is disposed at a light path of the light emitting component. The beam-shaping component includes a light incident surface disposed close to the light emitting component, the light incident surface is configured to transmit the light beam emitted from the light emitting component toward an opening of the mounting groove, and the light incident surface is configured to change a divergence angle of the light beam along at least one of a fast axis direction or a slow axis direction of the light beam.
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公开(公告)号:US20240248383A1
公开(公告)日:2024-07-25
申请号:US18595241
申请日:2024-03-04
发明人: Jianjun Li , Xintuan Tian , Wei Li , Youliang Tian , Xianrong Liu , Xiaoqiang Gu
IPC分类号: G03B21/20
CPC分类号: G03B21/2033 , G03B21/208
摘要: Provided is a laser projection apparatus. The laser projection apparatus includes a light source assembly, a light-modulating assembly, and a projection lens. The light source assembly includes a base plate, a frame, a plurality of light-emitting chips, a metal ring structure, a metal cover plate, and a light-transmitting layer. The frame is disposed on the base plate, and an accommodating space is defined between the base plate and the frame, and a material of the frame is ceramic. The plurality of light-emitting chips are disposed in the accommodating space and configured to emit laser light. The metal ring structure is configured to be fixed to the frame. An outer edge of the metal cover plate is fixed to one side of the metal ring structure distal from the base plate. An edge of the light-transmitting layer is fixed to an inner edge of the metal cover plate.
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公开(公告)号:US11768428B2
公开(公告)日:2023-09-26
申请号:US17725868
申请日:2022-04-21
发明人: Wei Li , Wuyue Han , Youliang Tian
CPC分类号: G03B21/204 , G02B26/008 , G03B21/2066
摘要: The laser source includes a light-emitting assembly, a phosphor wheel, a converging lens group, and a combining component. The light-emitting assembly is configured to emit at least a first laser beam and a second laser beam. The phosphor wheel includes a fluorescence-exciting region and a laser-reflecting region. The converging lens group is disposed between the light-emitting assembly and the phosphor wheel, and is configured to converge the first laser beam and the second laser beam to the phosphor wheel. The first laser beam and the second laser beam are asymmetric with respect to an optical axis of the converging lens group. The combining component is disposed between the light-emitting assembly and the converging lens group. The combining component includes a first reflecting region and a second reflecting region that are arranged at an interval.
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