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1. 发明授权

US10725369B2 Light source device and image display apparatus 有权
公开(公告)号：US10725369B2
公开(公告)日：2020-07-28
申请号：US16533884
申请日：2019-08-07
申请人： Kasumi Nakamura , Yohei Takano , Hirotoshi Nakayama , Naoki Nakamura
发明人： Kasumi Nakamura , Yohei Takano , Hirotoshi Nakayama , Naoki Nakamura
IPC分类号： G03B21/28 , F21V7/00 , G03B21/20 , G02B26/08
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.

2. 发明授权

US09261767B2 Projection optical system and image display apparatus 有权
标题翻译：投影光学系统和图像显示装置
公开(公告)号：US09261767B2
公开(公告)日：2016-02-16
申请号：US14272838
申请日：2014-05-08
申请人： Yohei Takano , Hibiki Tatsuno , Nobuyuki Arai , Hirotoshi Nakayama
发明人： Yohei Takano , Hibiki Tatsuno , Nobuyuki Arai , Hirotoshi Nakayama
IPC分类号： G03B21/28 , G02B17/08 , G03B21/14 , G02B13/16
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。

3. 发明申请

US20140340658A1 PROJECTION OPTICAL SYSTEM AND IMAGE DISPLAY APPARATUS 有权
标题翻译：投影光学系统和图像显示设备
公开(公告)号：US20140340658A1
公开(公告)日：2014-11-20
申请号：US14272838
申请日：2014-05-08
申请人： Yohei Takano , Hibiki Tatsuno , Nobuyuki Arai , Hirotoshi Nakayama
发明人： Yohei Takano , Hibiki Tatsuno , Nobuyuki Arai , Hirotoshi Nakayama
IPC分类号： G03B21/28 , G02B17/08
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。

4. 发明授权

US10890840B2 Projection optical system unit, projection optical system, and projection optical apparatus 有权
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
IPC分类号： G03B21/28 , G03B21/00 , G02B26/08 , G03B21/14 , G02B13/16
摘要： A projection optical system satisfies θ1≥15 (deg) and 3

5. 发明申请

US20200064719A1 LIGHT SOURCE DEVICE AND IMAGE DISPLAY APPARATUS 审中-公开
公开(公告)号：US20200064719A1
公开(公告)日：2020-02-27
申请号：US16533884
申请日：2019-08-07
申请人： Kasumi Nakamura , Yohei Takano , Hirotoshi Nakayama , Naoki Nakamura
发明人： Kasumi Nakamura , Yohei Takano , Hirotoshi Nakayama , Naoki Nakamura
IPC分类号： G03B21/20 , G02B26/08 , G03B21/28 , F21V7/00
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.

6. 发明授权

US11953816B2 Wavelength conversion plate, light source device, and image projection apparatus 有权
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.

7. 发明授权

US11829058B2 Light source device and image projection apparatus including a rod integrator and light guide 有权
公开(公告)号：US11829058B2
公开(公告)日：2023-11-28
申请号：US16823340
申请日：2020-03-19
申请人： Kasumi Nakamura , Yohei Takano , Tatsuya Takahashi , Makoto Hirakawa
发明人： Kasumi Nakamura , Yohei Takano , Tatsuya Takahashi , Makoto Hirakawa
IPC分类号： G03B21/20 , H04N9/31
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.

8. 发明授权

US11720010B2 Light source device and projection device 有权
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
IPC分类号： G03B21/20 , H04N9/31 , G02B26/00 , G02B27/14
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.

9. 发明授权

US09013802B2 Zoom lens, imaging device and information device 有权
标题翻译：变焦镜头，成像设备和信息设备
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。

10. 发明授权

US11677914B2 Light-source device and image forming apparatus including same 有权
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
IPC分类号： G03B21/20 , H04N9/31 , G02B27/09 , G02B27/10 , G02B27/18
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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