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公开(公告)号：US20240377649A1
公开(公告)日：2024-11-14
申请号：US18780658
申请日：2024-07-23
Applicant: Hisense Laser Display Co., Ltd.
Inventor： Wei LI , Youliang Tian , Xintuan Tian
Abstract: 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：US20230198219A1
公开(公告)日：2023-06-22
申请号：US18107379
申请日：2023-02-08
Applicant: Hisense Laser Display Co., Ltd
Inventor： Wei Li , Xiaoqiang Gu , Youliang Tian
IPC: H01S5/02253 , H01S5/02315 , H01S5/0233 , H01S5/40 , G02B27/30
CPC classification number: H01S5/02253 , G02B27/30 , H01S5/0233 , H01S5/02315 , H01S5/4087 , H01S5/02216
Abstract: 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：US12078814B2
公开(公告)日：2024-09-03
申请号：US17587515
申请日：2022-01-28
Applicant: Hisense Laser Display Co., Ltd.
Inventor： Wei Li , Youliang Tian , Xintuan Tian
CPC classification number: 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
Abstract: 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
Applicant: Hisense Laser Display Co., Ltd.
Inventor： Zinan Zhou , Youliang Tian , Wei Li
Abstract: 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：US12192685B2
公开(公告)日：2025-01-07
申请号：US17952780
申请日：2022-09-26
Applicant: Hisense Laser Display Co., Ltd
Inventor： Youliang Tian , Ke Yan , Rongrong Cui , Guangxue Liu
IPC: H04N9/31
Abstract: A laser projection apparatus includes a laser source assembly, a display control circuit, a signal shaping circuit and a laser source driving circuit. The display control circuit is configured to output a first driving signal and a second driving signal. The signal shaping circuit is coupled to the laser source driving circuit, and is configured to shape the first driving signal based on a shaping signal to obtain a target driving signal. A frequency of the target driving signal is higher than a frequency of the first driving signal. The laser source driving circuit is coupled to the laser source assembly, and is configured to receive the second driving signal and the target driving signal, and drive the laser source assembly to be turned on or turned off in response to the second driving signal and the target driving signal.
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Patent Agency Ranking
公开(公告)号：US20240248383A1
公开(公告)日：2024-07-25
申请号：US18595241
申请日：2024-03-04
Applicant: HISENSE LASER DISPLAY CO., LTD.
Inventor： Jianjun Li , Xintuan Tian , Wei Li , Youliang Tian , Xianrong Liu , Xiaoqiang Gu
IPC: G03B21/20
CPC classification number: G03B21/2033 , G03B21/208
Abstract: 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
Applicant: Hisense Laser Display Co., Ltd
Inventor： Wei Li , Wuyue Han , Youliang Tian
CPC classification number: G03B21/204 , G02B26/008 , G03B21/2066
Abstract: 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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公开(公告)号：US20230101471A1
公开(公告)日：2023-03-30
申请号：US18071438
申请日：2022-11-29
Applicant: Hisense Laser Display Co., Ltd
Inventor： Wei Li , Xiaoqiang Gu , Tiantian Tang , Wuyue Han , Youliang Tian
Abstract: 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：US11467477B2
公开(公告)日：2022-10-11
申请号：US16708406
申请日：2019-12-09
Applicant: HISENSE LASER DISPLAY CO., LTD.
Inventor： Youliang Tian , Wei Li , Zinan Zhou
Abstract: Embodiments of the present disclosure provide a laser array, a laser source, and a laser projection device, and relate to the field of laser display technologies. The laser array includes a light emitting portion for emitting a laser light beam; a light transmitting portion disposed along a light emitting direction of the light emitting portion for transmitting the laser light beam; where the light transmitting portion includes a first light transmitting region and a second light transmitting region, the first light transmitting region and the second light transmitting region are disposed such that light beams transmitting through the two regions have different polarization directions, which can reduce coherence of the laser light beam emitted from the laser array, thereby facilitating elimination of a speckle.
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公开(公告)号：US11275253B2
公开(公告)日：2022-03-15
申请号：US16689908
申请日：2019-11-20
Applicant: Hisense Laser Display Co., Ltd.
Inventor： Wei Li , Youliang Tian , Xintuan Tian
Abstract: 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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