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公开(公告)号：US09864260B2
公开(公告)日：2018-01-09
申请号：US15228577
申请日：2016-08-04
申请人： Yasuyuki Shibayama , Hibiki Tatsuno , Yohei Takano
发明人： Yasuyuki Shibayama , Hibiki Tatsuno , Yohei Takano
CPC分类号： G03B21/142 , G02B7/023 , G03B21/008 , G03B21/2066 , G03B21/208 , G03B21/28 , H04N9/3114
摘要： An image display apparatus and an image display unit. The image display apparatus and the image display unit includes a light source configured to emit light, an illumination optical system including a luminous body forming device configured to form a secondary luminous body, the illumination optical system guiding the light emitted from the light source, an optical modulation element including a plurality of reflection planes to modulate the light guided by the illumination optical system, and a projection optical system including a projection lens system and a barrel storing the projection lens system, the projection optical system projecting the light modulated by the optical modulation element onto a projection plane. The barrel satisfies an equation φ
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公开(公告)号：US20170059971A1
公开(公告)日：2017-03-02
申请号：US15230816
申请日：2016-08-08
申请人： Yohei Takano , Hibiki Tatsuno , Yasuyuki Shibayama
发明人： Yohei Takano , Hibiki Tatsuno , Yasuyuki Shibayama
CPC分类号： G02B15/20 , G02B7/021 , G02B13/16 , G02B17/00 , G02B17/08 , G02B17/0852 , G02B17/0896 , G03B21/142 , G03B21/28
摘要： An optical system includes a reflective optical system on a magnification side along an optical path of the projection optical system and a refractive optical system on a reduction side along the optical path. The reflective optical system includes one reflective optical element having a power. The refractive optical system includes a front group on the magnification side and a rear group on the reduction side. The front group having, in order from the magnification side toward the reduction side, a first lens group with a positive or negative refractive power, a second lens group, and a third lens group with a positive refractive power. The rear group has a positive refractive power. The first lens group moves to the magnification side, and the second lens group and the third lens group move to the reduction side in a change in focus from a long distance to a short distance.
摘要翻译： 光学系统包括沿着投影光学系统的光路的放大侧的反射光学系统和沿着光路的还原侧的折射光学系统。 反射光学系统包括具有功率的一个反射光学元件。 折射光学系统包括放大倍率侧的前组和还原侧的后组。 前组具有从放大侧朝向还原侧的顺序具有正屈光力或负折射光焦度的第一透镜组，第二透镜组和具有正屈光力的第三透镜组。 后组具有正屈光力。 第一透镜组移动到放大倍率侧，第二透镜组和第三透镜组从长距离到短距离移动到焦距变化的缩小侧。
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公开(公告)号：US09864177B2
公开(公告)日：2018-01-09
申请号：US15230816
申请日：2016-08-08
申请人： Yohei Takano , Hibiki Tatsuno , Yasuyuki Shibayama
发明人： Yohei Takano , Hibiki Tatsuno , Yasuyuki Shibayama
CPC分类号： G02B15/20 , G02B7/021 , G02B13/16 , G02B17/00 , G02B17/08 , G02B17/0852 , G02B17/0896 , G03B21/142 , G03B21/28
摘要： An optical system includes a reflective optical system on a magnification side along an optical path of the projection optical system and a refractive optical system on a reduction side along the optical path. The reflective optical system includes one reflective optical element having a power. The refractive optical system includes a front group on the magnification side and a rear group on the reduction side. The front group having, in order from the magnification side toward the reduction side, a first lens group with a positive or negative refractive power, a second lens group, and a third lens group with a positive refractive power. The rear group has a positive refractive power. The first lens group moves to the magnification side, and the second lens group and the third lens group move to the reduction side in a change in focus from a long distance to a short distance.
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公开(公告)号：US09261767B2
公开(公告)日：2016-02-16
申请号：US14272838
申请日：2014-05-08
CPC分类号： G02B17/08 , G02B3/04 , G02B5/10 , G02B13/16 , G02B17/0852 , G02B17/0896 , G03B21/14 , G03B21/28
摘要： There is provided a projection optical system capable of projecting an image formed on an image forming unit on a projection plane, which has an extremely short projection distance and a small size.
摘要翻译： 提供了一种投影光学系统，其能够将形成在图像形成单元上的图像投影在投影平面上，该投影平面具有极短的投影距离和小的尺寸。
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公开(公告)号：US20140340658A1
公开(公告)日：2014-11-20
申请号：US14272838
申请日：2014-05-08
CPC分类号： G02B17/08 , G02B3/04 , G02B5/10 , G02B13/16 , G02B17/0852 , G02B17/0896 , G03B21/14 , G03B21/28
摘要： There is provided a projection optical system capable of projecting an image formed on an image forming unit on a projection plane, which has an extremely short projection distance and a small size.
摘要翻译： 提供了一种投影光学系统，其能够将形成在图像形成单元上的图像投影在投影平面上，该投影平面具有极短的投影距离和小的尺寸。
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公开(公告)号：US11953816B2
公开(公告)日：2024-04-09
申请号：US17872022
申请日：2022-07-25
申请人： Kazuhiro Fujita , Yohei Takano , Kasumi Nakamura
发明人： Kazuhiro Fujita , Yohei Takano , Kasumi Nakamura
IPC分类号： G03B21/20
CPC分类号： G03B21/204 , G03B21/208
摘要： A wavelength conversion plate includes a conversion region and a reflection region on a base surface. The conversion region includes a wavelength conversion member configured to receive excitation light and generate a color different from a color of the excitation light. The reflection region is configured to reflect the excitation light. The reflection region includes a transmissive diffusion surface, a transmissive layer, and a reflection surface. The transmissive diffusion surface is configured to diffuse the excitation light. The transmissive layer is configured to transmit the excitation light. The reflection surface is configured to reflect the excitation light. The transmissive diffusion surface is in a position separate from a surface closer to the base surface, of the wavelength conversion member, toward a direction from which the excitation light is incident.
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7.发明授权公开(公告)号：US11829058B2
公开(公告)日：2023-11-28
申请号：US16823340
申请日：2020-03-19
CPC分类号： G03B21/204 , G03B21/2033 , G03B21/2066 , H04N9/3152
摘要： A light-source device includes an excitation light source; an optical element having a reflecting surface to reflect first colored light emitted from the excitation light source; and a wavelength conversion unit including a waveform conversion member configured to convert at least a portion of the first colored light reflected by the optical element and incident on the wavelength conversion unit, into second colored light having a wavelength different from a wavelength of the first colored light and emit the second colored light. A point P does not intersect with a light flux Q where the point P is a center of the first colored light on the reflecting surface of the optical element and the light flux Q is a light flux of the first colored light emitted from the wavelength conversion unit.
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公开(公告)号：US11720010B2
公开(公告)日：2023-08-08
申请号：US17539204
申请日：2021-12-01
申请人： Kazuhiro Fujita , Yohei Takano , Makoto Hirakawa , Shigeaki Imai
发明人： Kazuhiro Fujita , Yohei Takano , Makoto Hirakawa , Shigeaki Imai
CPC分类号： G03B21/204 , G02B26/008 , G02B27/141 , G03B21/208 , G03B21/2013 , G03B21/2066 , H04N9/3158 , H04N9/3161
摘要： A light source device includes a light source, a plurality of wavelength conversion units, and a plurality of optical systems. The plurality of wavelength conversion units each includes a wavelength conversion region configured to receive light emitted from the light source and emit light with a wavelength different from a wavelength of the received light. The plurality of optical systems are configured to form images of wavelength conversion regions of the plurality of wavelength conversion units. The light source is configured to irradiate the wavelength conversion units with light at a same timing. The plurality of optical systems are configured to cause the images of the wavelength conversion regions of the plurality of wavelength conversion units to be adjacent to or superimposed on each other.
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公开(公告)号：US10725369B2
公开(公告)日：2020-07-28
申请号：US16533884
申请日：2019-08-07
摘要： A light source device includes: a light source to emit first color light; a fluorescent member having a first region that includes a fluorescent body to convert at least a part of the first color light into second color light different from the first color light when irradiated with the first color light and a second region to transmit the first color light; a wave plate; a reflecting member to reflect the first color light transmitted through the wave plate; and an optical path separating element provided on an optical path between the light source and the fluorescent member and transmit one of the first color light emitted from the light source and reflected light of the first color light by the reflecting member, and reflect another one.
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公开(公告)号：US09013802B2
公开(公告)日：2015-04-21
申请号：US14200639
申请日：2014-03-07
申请人： Yohei Takano , Hiromichi Atsuumi
发明人： Yohei Takano , Hiromichi Atsuumi
IPC分类号： G02B15/14 , G02B15/16 , G02B15/17 , G02B27/00 , G02B15/173
CPC分类号： G02B15/14 , G02B15/16 , G02B15/17 , G02B15/173 , G02B27/0062
摘要： A zoom lens includes, in order from an object side in an optical axis a first lens group having a positive refractive power, a second lens group having a negative refractive power; a third lens group having a negative refractive power, a fourth lens group having a positive refractive power, a fifth lens group having a positive refractive power, and an aperture stop arranged between the third lens group and the fourth lens group, an interval between the first lens group and the second lens group being increased, an interval between the second lens group and the third lens group being varied, an interval between the third lens group and the fourth lens group being decreased, and an interval between the fourth lens group and the fifth lens group being decreased when changing a magnification from a wide-angle end to a telephoto end.
摘要翻译： 变焦透镜从光轴的物体侧起依次具有具有正折光力的第一透镜组，具有负折光力的第二透镜组; 具有负屈光力的第三透镜组，具有正折光力的第四透镜组，具有正折光力的第五透镜组，以及布置在第三透镜组和第四透镜组之间的间隙， 第一透镜组和第二透镜组增加，第二透镜组和第三透镜组之间的间隔变化，第三透镜组和第四透镜组之间的间隔减小，并且第四透镜组与第三透镜组之间的间隔 当从广角端到远摄端改变放大倍率时，第五透镜组减小。
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