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公开(公告)号：US11720009B2
公开(公告)日：2023-08-08
申请号：US17471154
申请日：2021-09-09
发明人： Hung-Wei Liu
CPC分类号： G03B21/204 , G02B27/141 , G02B27/283 , G03B21/208 , G03B21/2013
摘要： An illumination system configured to provide an illumination beam is provided. At a timing for blue light, first blue light penetrates a light homogenizing element, so that the illumination system outputs blue light of the illumination beam. At a timing for green light, the first blue light is converted into first green light via a phosphor wheel and penetrates the light homogenizing element. At the same time, second blue light is converted into second green light via the phosphor wheel and penetrates the light homogenizing element, so that the illumination system outputs green light of the illumination beam. A projection device is also provided. According to the illumination system and the projection device provided herein, each light source may be effectively utilized.
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公开(公告)号：US20220283484A1
公开(公告)日：2022-09-08
申请号：US17685398
申请日：2022-03-03
发明人： Hung-Wei Liu , Chien-Chung Liao
摘要： Provided is a projection device including a laser light source, a wavelength conversion element having wavelength and non-wavelength conversion regions, a diffuser element having first and second regions, a filter element, a beam splitting element, a first light valve, a second light valve, and a projection lens. During simultaneous rotation of the diffuser element and the wavelength conversion element, the first and second regions correspond respectively to the wavelength and non-wavelength conversion regions. The filter element is disposed in the first region, filtering out a laser beam emitted by the laser light source. The beam splitting element guides first and second sub-beams in a first beam passing through the first region of the diffuser element and the filter element respectively to the first and second light valves, and guides a second beam passing through the second region of the diffuser element to one of the first and second light valves.
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公开(公告)号：US11378875B2
公开(公告)日：2022-07-05
申请号：US17211747
申请日：2021-03-24
发明人： Chien-Chung Liao , Hung-Wei Liu
摘要： An illumination system including a first excitation light source, a second excitation light source and a first diffusion element is provided. The first excitation light source emits a first excitation light beam, and the second excitation light source emits a second excitation light beam. The first and second excitation light beams have different colors. The first diffusion element is disposed on transmission paths of the first excitation light beam and the second excitation light beam, and the first diffusion element includes a first diffusion region and a second diffusion region with different diffusion degrees, wherein at least one of the first excitation light beam and the second excitation light beam sequentially passes through the first diffusion region and the second diffusion region. A projection apparatus is also provided. The illumination system of the invention effectively mitigates a speckle phenomenon of the excitation light beams to achieve a better optical efficiency.
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公开(公告)号：US20200174355A1
公开(公告)日：2020-06-04
申请号：US16691619
申请日：2019-11-22
发明人： Hung-Wei Liu , Chien-Chung Liao
IPC分类号： G03B21/20
摘要： An illumination system including a plurality of first laser source modules and a diffusion component is provided. The plurality of first laser source modules are adapted to emit a plurality of first laser beams. The diffusion component is disposed on transmission paths of the plurality of first laser beams, wherein the plurality of first laser beams form a plurality of light spots at a plurality of locations on the diffusion component. A projection apparatus is also provided. The illumination system and the projection apparatus provided have smaller size and longer service life.
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公开(公告)号：US20220132086A1
公开(公告)日：2022-04-28
申请号：US17458582
申请日：2021-08-27
发明人： Chien-Chung Liao , Hung-Wei Liu
IPC分类号： H04N9/31
摘要： An illumination system and a projection device are provided. The illumination system includes multiple laser light source units, a light splitting element, a wavelength conversion module, and a filter module. The laser light source units include first and second laser light source units, respectively configured to provide first and second beams. The light splitting element is located on transmission paths of the first and second beams. When the wavelength conversion module rotates synchronously with the filter module, in a first period of time, the first beam is transmitted to the filter module via the light splitting element and then reflected to a wavelength conversion region via a first color filter region of the filter module, and the second beam is transmitted to the wavelength conversion region via the light splitting element. The first and second beams are converted to a converted beam, which is transmitted to the filter module.
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公开(公告)号：US20210364901A1
公开(公告)日：2021-11-25
申请号：US17211747
申请日：2021-03-24
发明人： Chien-Chung Liao , Hung-Wei Liu
摘要： An illumination system including a first excitation light source, a second excitation light source and a first diffusion element is provided. The first excitation light source emits a first excitation light beam, and the second excitation light source emits a second excitation light beam. The first and second excitation light beams have different colors. The first diffusion element is disposed on transmission paths of the first excitation light beam and the second excitation light beam, and the first diffusion element includes a first diffusion region and a second diffusion region with different diffusion degrees, wherein at least one of the first excitation light beam and the second excitation light beam sequentially passes through the first diffusion region and the second diffusion region. A projection apparatus is also provided. The illumination system of the invention effectively mitigates a speckle phenomenon of the excitation light beams to achieve a better optical efficiency.
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公开(公告)号：US20210356852A1
公开(公告)日：2021-11-18
申请号：US17209088
申请日：2021-03-22
发明人： Chien-Chung Liao , Hung-Wei Liu
IPC分类号： G03B21/20
摘要： An illumination system and a projection device are provided. The illumination system includes a first light source, a second light source, and a diffusion element. The first light source is configured to emit a first beam, and the second light source is configured to emit a second beam. The first beam and the second beam have different colors. The diffusion element is disposed on transmission paths of the first beam and the second beam, and has a first diffusion region and a second diffusion region with different diffusion degrees. The first beam and the second beam pass through the diffusion element once, respectively, wherein the first beam passes through the first diffusion region, and the second beam passes through the second diffusion region. The illumination system and the projection device invention may effectively resolve a speckle issue of the beams.
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公开(公告)号：US11860524B2
公开(公告)日：2024-01-02
申请号：US17685398
申请日：2022-03-03
发明人： Hung-Wei Liu , Chien-Chung Liao
CPC分类号： G03B21/206 , G02B5/0284 , G02B27/1006 , G03B21/2033 , G03B21/28
摘要： Provided is a projection device including a laser light source, a wavelength conversion element having wavelength and non-wavelength conversion regions, a diffuser element having first and second regions, a filter element, a beam splitting element, a first light valve, a second light valve, and a projection lens. During simultaneous rotation of the diffuser element and the wavelength conversion element, the first and second regions correspond respectively to the wavelength and non-wavelength conversion regions. The filter element is disposed in the first region, filtering out a laser beam emitted by the laser light source. The beam splitting element guides first and second sub-beams in a first beam passing through the first region of the diffuser element and the filter element respectively to the first and second light valves, and guides a second beam passing through the second region of the diffuser element to one of the first and second light valves.
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公开(公告)号：US11347140B2
公开(公告)日：2022-05-31
申请号：US17209088
申请日：2021-03-22
发明人： Chien-Chung Liao , Hung-Wei Liu
IPC分类号： G03B21/20
摘要： An illumination system and a projection device are provided. The illumination system includes a first light source, a second light source, and a diffusion element. The first light source is configured to emit a first beam, and the second light source is configured to emit a second beam. The first beam and the second beam have different colors. The diffusion element is disposed on transmission paths of the first beam and the second beam, and has a first diffusion region and a second diffusion region with different diffusion degrees. The first beam and the second beam pass through the diffusion element once, respectively, wherein the first beam passes through the first diffusion region, and the second beam passes through the second diffusion region. The illumination system and the projection device invention may effectively resolve a speckle issue of the beams.
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公开(公告)号：US20220121094A1
公开(公告)日：2022-04-21
申请号：US17471154
申请日：2021-09-09
发明人： Hung-Wei Liu
摘要： An illumination system configured to provide an illumination beam is provided. At a timing for blue light, first blue light penetrates a light homogenizing element, so that the illumination system outputs blue light of the illumination beam. At a timing for green light, the first blue light is converted into first green light via a phosphor wheel and penetrates the light homogenizing element. At the same time, second blue light is converted into second green light via the phosphor wheel and penetrates the light homogenizing element, so that the illumination system outputs green light of the illumination beam. A projection device is also provided. According to the illumination system and the projection device provided herein, each light source may be effectively utilized.
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