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公开(公告)号：US11677914B2
公开(公告)日：2023-06-13
申请号：US17085193
申请日：2020-10-30
申请人： Yohei Takano , Kazuhiro Fujita , Kasumi Nakamura
发明人： Yohei Takano , Kazuhiro Fujita , Kasumi Nakamura
CPC分类号： H04N9/3158 , G02B27/0977 , G02B27/1006 , G02B27/18 , G03B21/2033 , G03B21/2066 , H04N9/3152 , H04N9/3164
摘要： A light-source device includes an excitation light source, an optical member, and a wavelength converter. The excitation light source is configured to emit first color light. The optical member has a reflecting surface configured to reflect the first color light emitted from the excitation light source. The wavelength converter includes a wavelength conversion member on which the first color light reflected by the optical member is incident. The wavelength conversion member is configured to convert at least part of the first color light into second color light having a wavelength different from a wavelength of the first color light and emit the second color light. A center of the first color light on the reflecting surface of the optical member does not intersect with a light flux of the first color light emitted from the wavelength converter.
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公开(公告)号：US12066752B2
公开(公告)日：2024-08-20
申请号：US17760768
申请日：2020-10-29
申请人： Kazuhiro Fujita , Kasumi Nakamura , Yohei Takano
发明人： Kazuhiro Fujita , Kasumi Nakamura , Yohei Takano
CPC分类号： G03B21/204 , G02B26/008 , G03B21/2013 , G03B21/2066 , G03B21/208
摘要： A light-source device includes an excitation light source to emit first color light; an optical member having a reflecting surface to reflect the first color light; a wavelength conversion unit including a wavelength conversion member on which the first color light reflected by the optical member is incident, the wavelength conversion member to convert at least part of the first color light into second color light having a wavelength different from a wavelength of the first color light and emit the second color light; and a light condensing element to condense the first color light emitted from the wavelength conversion unit. A straight line including a first optical path from a center of a flux of light rays emitted from the excitation light source, to the center of the first color light on the reflecting surface does not intersect with a light flux condensed by the light condensing element.
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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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公开(公告)号：US11314157B2
公开(公告)日：2022-04-26
申请号：US17172077
申请日：2021-02-10
申请人： Yohei Takano , Tatsuya Takahashi , Kasumi Nakamura
发明人： Yohei Takano , Tatsuya Takahashi , Kasumi Nakamura
IPC分类号： G03B21/20
摘要： A light source optical system includes a wavelength conversion unit configured to receive first color light emitted from by an excitation light source and emit second color light with a wavelength different from a wavelength of the first color light; and a first optical system and a second optical system provided in an optical path between the excitation light source and the wavelength conversion unit. The first optical system includes one optical element having a negative power, wherein the second optical system as a whole has a positive power, and wherein Conditional Expression (1) is satisfied as follows: 1.8
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16.发明授权公开(公告)号：US10890840B2
公开(公告)日：2021-01-12
申请号：US16355765
申请日：2019-03-17
申请人： Yohei Takano , Hirotoshi Nakayama
发明人： Yohei Takano , Hirotoshi Nakayama
摘要： A projection optical system satisfies θ1≥15 (deg) and 3
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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：US08848296B2
公开(公告)日：2014-09-30
申请号：US13777176
申请日：2013-02-26
申请人： Hiromichi Atsuumi , Yohei Takano
发明人： Hiromichi Atsuumi , Yohei Takano
CPC分类号： G02B15/14 , G02B13/009 , G02B15/17
摘要： A zoom lens includes, in order from an object side along 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, and a fifth lens group having a positive refractive power, wherein with a change in a magnification from a wide-angle end to a telephoto end, an interval between the first lens group and the second lens group is increased, the interval between the second lens group and the third lens group is changed, the interval between the third lens group and the fourth lens group is decreased, the interval between the fourth lens group and the fifth lens group is decreased, and focusing is performed by the third lens group.
摘要翻译： 变焦透镜从物体侧沿着光轴依次包括具有正折光力的第一透镜组，具有负屈光力的第二透镜组，具有负屈光力的第三透镜组，第四透镜组 具有正折射光焦度和具有正折光力的第五透镜组，其中随着从广角端到望远端的放大率的变化，第一透镜组和第二透镜组之间的间隔增大， 第二透镜组和第三透镜组之间的间隔改变，第三透镜组和第四透镜组之间的间隔减小，第四透镜组和第五透镜组之间的间隔减小，并且聚焦由 第三个镜头组。
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公开(公告)号：US08705180B2
公开(公告)日：2014-04-22
申请号：US13482401
申请日：2012-05-29
申请人： Yohei Takano , Hiromichi Atsuumi
发明人： Yohei Takano , Hiromichi Atsuumi
IPC分类号： G02B15/14 , 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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