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：US20220299852A1

公开(公告)日：2022-09-22

申请号：US17692208

申请日：2022-03-11

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

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

IPC分类号： G03B21/20 ,  G02B26/00

摘要： A light source device includes: a first light source to emit first color light; a second light source to emit second color light; a wavelength conversion unit to convert at least a portion of the first color light into a third color light; a light incident element to which the first color light, the second color light, and the third color light enter; a first filter to reflect the first color light toward the wavelength conversion unit; and a second filter to reflect the second color tight toward the light incident element. The first filter and the second filter are separately disposed on an optical path of the third color light between the wavelength conversion unit and the light incident element.

公开(公告)号：US20220066177A1

公开(公告)日：2022-03-03

申请号：US17462109

申请日：2021-08-31

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

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

IPC分类号： G02B13/16 ,  G02B5/00 ,  G02B7/02 ,  G02B13/22 ,  G02B26/08 ,  G03B21/00

摘要： An image projection apparatus includes: a light source; an image display element including multiple micromirrors arranged in two dimensions, the multiple micromirrors forming an image display plane, each micromirror having a reflecting surface; and a projection optical system. Conditional expressions (1) and (2) below are satisfied: θ1≥14 (deg)  (1) 1.2

公开(公告)号：US20220179298A1

公开(公告)日：2022-06-09

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 ,  G02B26/00 ,  G02B27/14 ,  H04N9/31

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.

公开(公告)号：US20210200075A1

公开(公告)日：2021-07-01

申请号：US17109174

申请日：2020-12-02

申请人： Kasumi NAKAMURA ,  Yohei TAKANO ,  Makoto HIRAKAWA ,  Kazuhiro FUJITA

发明人： Kasumi NAKAMURA ,  Yohei TAKANO ,  Makoto HIRAKAWA ,  Kazuhiro FUJITA

IPC分类号： G03B21/20 ,  G03B33/12

摘要： A light-source device includes an excitation light source; a wavelength conversion unit to convert at least some of first color light into second color light; a light mixing element including a rod integrator to mix at least one of the first color light and the second color light from the conversion unit; and an optical element on an optical path of the first color light and having a reflecting surface. A center of the first color light on the reflecting surface intersects with only one of a first light flux of the first color light incident on and a second light flux of the first color light emitted from the conversion unit. An angle formed by a projection straight line of the first color light incident on an incident aperture of the integrator and a predetermined axial line of the incident aperture of the integrator is smaller than 40°.

公开(公告)号：US20230110183A1

公开(公告)日：2023-04-13

申请号：US17946058

申请日：2022-09-16

申请人： Yohei TAKANO ,  Makoto HIRAKAWA ,  Kazuhiro FUJITA ,  Takashi SASAKI

发明人： Yohei TAKANO ,  Makoto HIRAKAWA ,  Kazuhiro FUJITA ,  Takashi SASAKI

IPC分类号： G03B21/20 ,  G02B26/00

摘要： A light-source device, an image projection apparatus, and a display device. The light-source device includes a light source to emit light, an optical element having a lens array on one side or both sides of which a plurality of lenses are arrayed with distance from each other, the distance between a pair of vertices of an adjacent pair of the plurality of lenses of the optical element being equal to or less than one-quarter of width of light flux of the light incident on the optical element and a wavelength conversion element to convert a wavelength of the light emitted from the light source and passed through the optical element. An image projection apparatus includes the light-source device, a light mixing element to mix the light emitted from the light-source device to uniformize the light and an illumination optical system to emit the light uniformized by the light mixing element.

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：US20210136336A1

公开(公告)日：2021-05-06

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： H04N9/31 ,  G03B21/20

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.

公开(公告)号：US20220410608A1

公开(公告)日：2022-12-29

申请号：US17777621

申请日：2020-12-11

申请人： Rie HIRAYAMA ,  Shigeaki IMAI ,  Hiroto TACHIBANA ,  Nobuyuki ARAI ,  Yoichi ICHIKAWA ,  Hirotoshi NAKAYAMA ,  Shohta KOBASHIGAWA ,  Asato TAMURA ,  Takuei NISHIO ,  Kazuhiro FUJITA ,  Muneaki IWATA

发明人： Rie HIRAYAMA ,  Shigeaki IMAI ,  Hiroto TACHIBANA ,  Nobuyuki ARAI ,  Yoichi ICHIKAWA ,  Hirotoshi NAKAYAMA ,  Shohta KOBASHIGAWA ,  Asato TAMURA ,  Takuei NISHIO ,  Kazuhiro FUJITA ,  Muneaki IWATA

IPC分类号： B41M5/26 ,  B29C49/24 ,  B41M5/24 ,  B65D1/02

摘要： A substrate having a first pattern formed on a surface or in an inside of the substrate, or on the surface and in the inside of the substrate, wherein the first pattern is constituted by an aggregate of second patterns.