公开(公告)号：US20160103304A1

公开(公告)日：2016-04-14

申请号：US14971671

申请日：2015-12-16

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： G02B17/08 ,  G03B21/28 ,  G02B5/10 ,  G02B13/16 ,  G02B3/04

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。

公开(公告)号：US20170064268A1

公开(公告)日：2017-03-02

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

IPC分类号： H04N9/31 ,  G03B21/14 ,  G03B21/20 ,  G02B7/02 ,  G03B21/28

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

摘要翻译： 图像显示装置和图像显示单元。 图像显示装置和图像显示单元包括被配置为发光的光源，照明光学系统，包括被配置为形成二次发光体的发光体形成装置，该照明光学系统引导从光源发射的光， 光调制元件，包括多个反射面，以调制由照明光学系统引导的光;以及投影光学系统，包括投影透镜系统和存储投影透镜系统的镜筒，投影光学系统投影由光学调制的光 调制元件到投影平面上。 筒体满足等式φ<0.71H + 8.5，其中φ表示在光进入侧的筒的前端的外径，H表示反射面与筒的前端之间的距离。

公开(公告)号：US20180074302A1

公开(公告)日：2018-03-15

申请号：US15822036

申请日：2017-11-24

申请人： Yohei TAKANO ,  Hibiki TATSUNO ,  Yasuyuki SHIBAYAMA

发明人： Yohei TAKANO ,  Hibiki TATSUNO ,  Yasuyuki SHIBAYAMA

IPC分类号： G02B15/20 ,  G03B21/14 ,  G02B17/00 ,  G02B13/16

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.

公开(公告)号：US20190285979A1

公开(公告)日：2019-09-19

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

摘要： A projection optical system satisfies θ1≥15 (deg) and 3

公开(公告)号：US20220342291A1

公开(公告)日：2022-10-27

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

IPC分类号： G03B21/20 ,  G02B26/00

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.

公开(公告)号：US20220171268A1

公开(公告)日：2022-06-02

申请号：US17533119

申请日：2021-11-23

申请人： Makoto HIRAKAWA ,  Yohei TAKANO ,  Kasumi NAKAMURA

发明人： Makoto HIRAKAWA ,  Yohei TAKANO ,  Kasumi NAKAMURA

IPC分类号： G03B21/20 ,  G02B27/10 ,  G02B27/28

摘要： A light source optical system includes: a first optical system configured to guide a first light beam having a first wavelength emitted from a light source to a wavelength conversion element; the wavelength conversion element configured to convert the first light beam into a second light beam having a second wavelength different from the first wavelength, and emit the second light beam; and a second optical system through which the second light beam emitted from the light conversion element passes. The second optical system includes a light guide element configured to guide a portion of the second light beam from one end surface of the light guide element to the other end surface of the light guide element to separate the portion of the second light beam from the second light beam.

公开(公告)号：US20200301260A1

公开(公告)日：2020-09-24

申请号：US16816264

申请日：2020-03-12

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

公开(公告)号：US20220345671A1

公开(公告)日：2022-10-27

申请号：US17724514

申请日：2022-04-20

申请人： Takashi SASAKI ,  Yohei TAKANO ,  Kasumi NAKAMURA ,  Kazuhiro FUJITA ,  Makoto HIRAKAWA ,  Shigeaki IMAI

发明人： Takashi SASAKI ,  Yohei TAKANO ,  Kasumi NAKAMURA ,  Kazuhiro FUJITA ,  Makoto HIRAKAWA ,  Shigeaki IMAI

IPC分类号： H04N9/31 ,  F21V8/00

摘要： A light guide optical device includes an optical path combiner including: a first deflector to deflect first light incident from a first direction to an emission direction; a second deflector to deflect second light incident from a second direction different from the first direction, to the emission direction; and a transmission portion between the first deflector and the second deflector, the transmission portion to transmit third light incident from a third direction different from each of the first direction and the second direction, to the emission direction. The optical path combining unit combines the first light, the second light, and the third light, and emits the combined light to the mission direction.

公开(公告)号：US20220171267A1

公开(公告)日：2022-06-02

申请号：US17509106

申请日：2021-10-25

申请人： Yohei TAKANO ,  Kazuhiro FUJITA ,  Makoto HIRAKAWA ,  Shigeaki IMAI

发明人： Yohei TAKANO ,  Kazuhiro FUJITA ,  Makoto HIRAKAWA ,  Shigeaki IMAI

IPC分类号： G03B21/20 ,  G02B27/10 ,  G03B33/12

摘要： A light source device includes: multiple light source units each including a light source to emit a first color light beam, each of the multiple light source units configured to: convert at least part of the first color light beam into a second color light beam emitted from an emitting region; and emit the second color light beam to form a conjugate image; and a light combiner to combine the conjugate images formed by the multiple light source units to form a combined image, in which the conjugate images partially overlap each other, on a plane of an entrance surface of a light uniformizing element along a central axis of the light uniformizing element. A conditional expression below is satisfied: 1.3>SC/SI>0.7 where SC is an area of the combined image, and SI is an area of the entrance surface of the light uniformizing element.

公开(公告)号：US20220382137A1

公开(公告)日：2022-12-01

申请号：US17772143

申请日：2020-10-28

申请人： Yohei TAKANO ,  Kasumi NAKAMURA ,  Makoto HIRAKAWA

发明人： Yohei TAKANO ,  Kasumi NAKAMURA ,  Makoto HIRAKAWA

IPC分类号： G03B21/20 ,  G02B26/00 ,  G03B21/00

摘要： A light-source optical system includes a wavelength converter on which light of first color is incident, the wavelength converter converting at least a part of the light of first color into light of second color different from the light of first color, a first optical system disposed upstream from the wavelength converter on an optical path of the light of first color, the first optical system including optical elements, a reflection plane disposed downstream from the first optical system on the optical path, and a second optical system disposed downstream from the reflection plane on the optical path. The reflection plane reflects one of the light of first color and the light of second color, and a conditional expression “0