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公开(公告)号：US11726396B2
公开(公告)日：2023-08-15
申请号：US17538350
申请日：2021-11-30
Inventor： Takaaki Tanaka
CPC classification number: G03B21/204 , G02B5/0221 , G02B27/1026 , G02B27/141 , G02B27/283 , G03B21/006 , G03B21/208 , G03B21/2013 , G03B21/2066 , G03B21/2073
Abstract: A light source device includes: blue, green, and red laser light sources; a first retardation plate that controls polarization of blue laser light emitted from the blue laser light source; a polarizing beam splitter that separates the blue laser light whose polarization is controlled by the first retardation plate into a first blue laser light and a second laser light; a second retardation plate that controls polarization of the second blue laser light separated by the polarizing beam splitter; a fluorescent plate that is excited by the first blue laser light separated by the polarizing beam splitter and emits fluorescent light including a green component and a red component; a first dichroic mirror that combines the second blue laser light whose polarization is controlled by the second retardation plate and light emitted from the green and red laser light sources, to generate combined laser light; a dynamic diffuser plate that diffuses the combined laser light combined by the first dichroic mirror to generate diffused laser light; and a second dichroic mirror that combines the diffused laser light diffused by the dynamic diffuser plate and the fluorescent light emitted from the fluorescent plate.
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公开(公告)号：US10203593B2
公开(公告)日：2019-02-12
申请号：US15806079
申请日：2017-11-07
Inventor： Takaaki Tanaka
Abstract: A light source device according to the present disclosure includes: a plurality of solid-state light source units; a polarization combination mirror for combining polarized lights incident from the plurality of the solid-state light source units; a half-wavelength plate having a strip shape, for converting a polarization azimuth of one of polarized lights coming from the polarization combination mirror; another half-wavelength plate for controlling proportions of intensities of polarization components of the polarized lights incident from the former half-wavelength plate; a dichroic mirror for separating the polarized lights incident from the latter half-wavelength plate; a phosphor plate for emitting light, upon being excited by the polarized light having been separated by the dichroic mirror.
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公开(公告)号：US12072618B2
公开(公告)日：2024-08-27
申请号：US17349221
申请日：2021-06-16
Inventor： Takaaki Tanaka
CPC classification number: G03B21/2073 , G02B5/26 , G02B5/3083 , G02B27/283 , G03B21/2013 , G03B21/2033 , G03B33/12
Abstract: A light source device includes: a plurality of first laser light sources, a second laser light source, and a plurality of third laser light sources; a first polarization mirror that combines light from the plurality of first laser light sources and transmits light from the second laser light source; a dichroic mirror that combines the light from the plurality of first laser light sources and the light from the second laser light source; a second polarization mirror that combines light from the plurality of third laser light sources and transmits the light from the plurality of first laser light sources and the light from the second laser light source; a retardation plate that converts polarization of light from the second polarization mirror into circular polarization; and a filter element that reflects light from the retardation plate.
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公开(公告)号：US11982930B2
公开(公告)日：2024-05-14
申请号：US17994129
申请日：2022-11-25
Inventor： Takaaki Tanaka , Manabu Okuno
CPC classification number: G03B21/2013 , G03B21/006 , G03B21/008 , G03B21/204 , G03B21/2066 , G03B33/12
Abstract: A light source apparatus includes a plurality of light emitting apparatuses. Each of the light emitting apparatuses includes a plurality of light emitting devices each of which has a light emitting area and a non-light emitting area on an emission surface thereof that emits light. At least two light emitting apparatuses of the light emitting apparatuses constitute a light emitting apparatus group disposed such that the emission surfaces of the respective light emitting apparatuses are parallel to each other with a predetermined distance, and that a distance between light emitting areas of the respective light emitting apparatuses when viewed along a direction perpendicular to the emission surfaces of the at least two of the light emitting apparatuses is shorter than a distance between the light emitting areas of the respective light emitting apparatuses when the emission surfaces of the respective light emitting apparatuses are on the same plane.
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公开(公告)号：US11215910B2
公开(公告)日：2022-01-04
申请号：US16843404
申请日：2020-04-08
Inventor： Takaaki Tanaka
Abstract: A light source device includes a laser optical system, a fluorescence optical system, and a light combiner combining first and second outgoing lights from the laser optical system and the fluorescent optical system. The laser optical system includes first laser optical sources emitting a plurality of outgoing lights respectively, the plurality of outgoing lights being blue, green, and red lights, or blue and red lights; a first dichroic mirror combining the plurality of outgoing lights from the first laser optical sources, and a diffusion plate reducing speckle noise and an uneven luminance of each of the plurality of outgoing lights. The fluorescence optical system includes a second laser light source, and a phosphor plate emitting, as the second outgoing light, a fluorescent light containing green and red lights by being excited by an outgoing light from the second laser light source. The light combiner includes a second dichroic mirror.
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Patent Agency Ranking
公开(公告)号：US10310364B2
公开(公告)日：2019-06-04
申请号：US15944451
申请日：2018-04-03
Inventor： Manabu Okuno , Takaaki Tanaka
IPC: G02B27/20 , G03B21/20 , G02B5/08 , F21V7/22 , G02B27/14 , G02B27/28 , F21V13/14 , F21S10/00 , F21Y115/30
Abstract: The light source device and the projection display apparatus include a solid-state light source unit, a dichroic mirror, a fluorescent plate, a first wave plate, and a multi-reflection mirror. The solid-state light source unit emits first and second linearly polarized light rays at a predetermined ratio, the first and the second linearly polarized light rays being orthogonal to each other. The dichroic mirror separates the first and the second linearly polarized light rays, and combines blue light with yellow light. The fluorescent plate emits the yellow light to the dichroic mirror when the fluorescent plate is excited by the first linearly polarized light ray separated by the dichroic mirror. The first wave plate converts the second linearly polarized light ray separated by the dichroic mirror, into circularly polarized light. The multi-reflection mirror reflects the circularly polarized light to the dichroic mirror as the blue light.
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公开(公告)号：US11537035B2
公开(公告)日：2022-12-27
申请号：US17196142
申请日：2021-03-09
Inventor： Takaaki Tanaka , Manabu Okuno
Abstract: A light source apparatus includes a plurality of light emitting apparatuses. Each of the light emitting apparatuses includes a plurality of light emitting devices each of which has a light emitting area and a non-light emitting area on an emission surface thereof that emits light. At least two light emitting apparatuses of the light emitting apparatuses constitute a light emitting apparatus group disposed such that the emission surfaces of the respective light emitting apparatuses are parallel to each other with a predetermined distance, and that a distance between light emitting areas of the respective light emitting apparatuses when viewed along a direction perpendicular to the emission surfaces of the at least two of the light emitting apparatuses is shorter than a distance between the light emitting areas of the respective light emitting apparatuses when the emission surfaces of the respective light emitting apparatuses are on the same plane.
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公开(公告)号：US10261401B2
公开(公告)日：2019-04-16
申请号：US16034338
申请日：2018-07-12
Inventor： Takaaki Tanaka
Abstract: A light source device has a blue solid-state light source, a red solid-state light source, a first retardation plate, a dichroic mirror, a phosphor plate, a second retardation plate, and a reflector. The first retardation plate causes light from the blue solid-state light source to have a phase difference. The dichroic mirror provides the light from the blue solid-state light source with polarization separation, receiving the light from the blue solid-state light source and light from the red solid-state light source in an identical direction. The phosphor plate emits fluorescence light, excited by one light, separated by the dichroic mirror. The second retardation plate converts, into circular polarization, polarization of the light from the red solid-state light source and other light, separated by the dichroic mirror. The reflector reflects light converted into circular polarization by being passed through the second retardation plate.
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9.发明授权Projection-type image display apparatus including light source unit with dichroic mirror 有权投影型图像显示装置，包括具有分色镜的光源单元公开(公告)号：US09454068B2
公开(公告)日：2016-09-27
申请号：US14876408
申请日：2015-10-06
Inventor： Takaaki Tanaka
CPC classification number: G03B21/2066 , G02B27/141 , G03B21/005 , G03B21/14 , G03B21/2006 , G03B21/204 , G03B21/2073 , G03B29/00 , H04N9/3111 , H04N9/3114 , H04N9/315 , H04N9/3158 , H04N9/3164
Abstract: A projection-type image display apparatus includes a light source unit that emits light, an image generating unit that generates image light according to an input video signal, a light-guide optical system that guides the light from the light source unit to the image generating unit, and a projection optical system that projects the image light generated by the image generating unit. The light source unit includes a light source that produces light, phosphor that is excited by the light from the light source, and a dichroic mirror that directs the light from the light source to the phosphor. The dichroic mirror is arranged with an incident angle of the light from the light source being 50° or more and 60° or less.
Abstract translation: 投射型图像显示装置包括发光的光源单元，根据输入视频信号产生图像光的图像生成单元，将来自光源单元的光引导到图像生成的导光光学系统 以及投射由图像生成单元生成的图像光的投影光学系统。 光源单元包括产生光的光源，被来自光源的光激发的荧光体，以及将来自光源的光引导到荧光体的分色镜。 二向色镜配置有来自光源的光的入射角为50°以上且60°以下。
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公开(公告)号：US12228847B2
公开(公告)日：2025-02-18
申请号：US18215360
申请日：2023-06-28
Inventor： Takaaki Tanaka
Abstract: A light source device includes: blue, green, and red laser light sources; a first retardation plate that controls polarization of blue laser light emitted from the blue laser light source; a polarizing beam splitter that separates the blue laser light whose polarization is controlled by the first retardation plate into a first blue laser light and a second laser light; a second retardation plate that controls polarization of the second blue laser light separated by the polarizing beam splitter; a fluorescent plate that is excited by the first blue laser light separated by the polarizing beam splitter and emits fluorescent light including a green component and a red component; a first dichroic mirror that combines the second blue laser light whose polarization is controlled by the second retardation plate and light emitted from the green and red laser light sources, to generate combined laser light; a dynamic diffuser plate that diffuses the combined laser light combined by the first dichroic mirror to generate diffused laser light; and a second dichroic mirror that combines the diffused laser light diffused by the dynamic diffuser plate and the fluorescent light emitted from the fluorescent plate.
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