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公开(公告)号：US20230091332A1
公开(公告)日：2023-03-23
申请号：US17994129
申请日：2022-11-25
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：US20210041779A1
公开(公告)日：2021-02-11
申请号：US17070263
申请日：2020-10-14
Inventor： Takaaki TANAKA , Manabu OKUNO
Abstract: A first light source device includes: a solid-state light source; a condenser element that collects light from the solid-state light source; a retardation plate that converts linearly polarized light into circularly polarized light; and a reflection plate, wherein the retardation plate is disposed at a point of incidence of collected light and divergent light between the condenser element and the reflection plate. A second light source device includes: a solid-state light source; a retardation plate that changes a polarization direction of light from the solid-state light source to make a ratio of p-polarization and s-polarization components of the light constant under control; and a dichroic mirror that separates the light from the retardation plate according to the polarization direction, wherein the retardation plate is disposed at a point of incidence of one of collected light and divergent light between the solid-state light source and the dichroic mirror.
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公开(公告)号：US20200319541A1
公开(公告)日：2020-10-08
申请号：US16829717
申请日：2020-03-25
Inventor： Takaaki TANAKA
Abstract: A light source device includes: first and second light source elements which respectively generate blue and red lights; a first phase difference plate which controls a polarization component of the blue light; a first light combiner which combines the blue and the red lights, the blue light entering from the first phase difference plate; a second light combiner which the blue and the red light enter and which divides the blue light into first and second polarization components; a phosphor plate which generates yellow light by being excited by the first polarization component; and a second phase difference plate which controls polarization of the second polarization component and the red light. The second polarization component and the red light enter a reflective plate from the second phase difference plate, are reflected, enter the second light combiner again via the second phase difference plate, and are combined with the yellow light.
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公开(公告)号：US20210405517A1
公开(公告)日：2021-12-30
申请号：US17349221
申请日：2021-06-16
Inventor： Takaaki TANAKA
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：US20160026077A1
公开(公告)日：2016-01-28
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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Patent Agency Ranking
公开(公告)号：US20230341757A1
公开(公告)日：2023-10-26
申请号：US18215360
申请日：2023-06-28
Inventor： Takaaki TANAKA
CPC classification number: G03B21/204 , G02B5/0221 , G02B27/1026 , G02B27/141 , G02B27/283 , G03B21/006 , G03B21/2013 , G03B21/2066 , G03B21/2073 , G03B21/208
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：US20230259013A1
公开(公告)日：2023-08-17
申请号：US18138408
申请日：2023-04-24
Inventor： Takaaki TANAKA
CPC classification number: G03B21/2013 , G03B21/2033 , G03B21/2066 , G03B21/208 , G03B21/006 , G03B21/008 , G03B21/2073
Abstract: A light source device includes a red solid-state light source that emits red light, a green solid-state light source that emits green light, a blue solid-state light source that emits blue light, a second polarizing mirror that combines the red light emitted from the red solid-state light source with the green light emitted from the green solid-state light source, and a beam splitting element that splits the blue light emitted from the blue solid-state light source into transmitted light transmitting the beam splitting element and reflected light reflected on the beam splitting element, and transmits or reflects the combined red light and green light.
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公开(公告)号：US20200333697A1
公开(公告)日：2020-10-22
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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公开(公告)号：US20220091493A1
公开(公告)日：2022-03-24
申请号：US17538350
申请日：2021-11-30
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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公开(公告)号：US20210191243A1
公开(公告)日：2021-06-24
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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