-
公开(公告)号：US20230280592A1
公开(公告)日：2023-09-07
申请号：US18008183
申请日：2021-06-09
Applicant: Naoki NAKAMURA , Masahiro ITOH , Susumu MOMMA , Shigenobu HIRANO , Yoshifumi SUDOH , Shun OKAZAKI , Yasuo KATANO , Kenji KAMEYAMA , Norikazu IGARASHI , Masamichi YAMADA , Aino HASEGAWA , Takashi MAKI
Inventor： Naoki NAKAMURA , Masahiro ITOH , Susumu MOMMA , Shigenobu HIRANO , Yoshifumi SUDOH , Shun OKAZAKI , Yasuo KATANO , Kenji KAMEYAMA , Norikazu IGARASHI , Masamichi YAMADA , Aino HASEGAWA , Takashi MAKI
CPC classification number: G02B27/0172 , G02B6/0018 , G02B2027/0123 , G02B2027/0118
Abstract: A light guide member (300) includes a boundary surface (304) configured to reflect image light guided to the boundary surface (304) and emit the image light outside the light guide member (300), an opposing surface (306) parallel to the boundary surface (304), the opposing surface (306) facing the boundary surface (304), a first inclined surface (305) having an inclination in which a distance between the first inclined surface (305) and the boundary surface (304) decreases in a guiding direction of the image light, and a second inclined surface (307) between the opposing surface (306) and the first inclined surface (305), the second inclined surface (307) inclined at a different angle with the first inclined surface (305) in the guiding direction.
-
公开(公告)号：US11640106B2
公开(公告)日：2023-05-02
申请号：US17287523
申请日：2019-10-07
Applicant: Yohei Takano , Naoki Nakamura
Inventor： Yohei Takano , Naoki Nakamura
IPC: G03B21/20 , G02B9/06 , G02B13/16 , G02B13/18 , G02B19/00 , G02B26/00 , G02B27/28 , G02B27/30 , G02B5/30
Abstract: A light source optical system used with an excitation light source configured to emit first color light includes a wavelength conversion unit configured to receive the first color light emitted by the excitation light source and emit second color light with a wavelength different from a wavelength of the first color light, There is a first optical system having a positive power and a second optical system having a positive power provided in this order in an optical path between the excitation light source and the wavelength conversion unit. When a ray parallel to an optical axis of the first optical system is incident on the first optical system, a ray emitted from the first optical system is incident on the second optical system while approaching the optical axis. The second optical system has under-corrected spherical aberration at a paraxial focal position of the second optical system.
-
公开(公告)号：US20230039870A1
公开(公告)日：2023-02-09
申请号：US17876543
申请日：2022-07-29
Applicant: Susumu MOMMA , Naoki NAKAMURA , Masahiro ITOH , Yoshifumi SUDOH , Shigenobu HIRANO , Yasuo KATANO
Inventor： Susumu MOMMA , Naoki NAKAMURA , Masahiro ITOH , Yoshifumi SUDOH , Shigenobu HIRANO , Yasuo KATANO
Abstract: A light guide includes: a light guide board configured to allow light incident on an optical entrance to propagate through the light guide board, the light guide board including: the optical entrance; a first face; and at least one partial reflection layer within the light guide board and tilted to the first face. The at least one partial reflection layer is configured to reflect a part of light incident on the at least one partial reflection layer at an incident angle of greater than or equal to a critical angle θr to allow the reflected light to exit the light guide board through the first surface while transmitting therethrough a remainder of the light incident on the at least one partial reflection layer. Formula below is satisfied: θr=sin−1(n2/n1) where θr is the critical angle; n1 is a refractive index of the light guide board; and n2 is a refractive index of the at least one partial reflection layer.
-
公开(公告)号：US20230003931A1
公开(公告)日：2023-01-05
申请号：US17781715
申请日：2021-01-06
Applicant: Naoki NAKAMURA , Masahiro ITOH , Yoshifumi SUDOH , Susumu MOMMA , Shun OKAZAKI , Shigenobu HIRANO , Yasuo KATANO , Kenji KAMEYAMA , Norikazu IGARASHI , Aino HASEGAWA
Inventor： Naoki NAKAMURA , Masahiro ITOH , Yoshifumi SUDOH , Susumu MOMMA , Shun OKAZAKI , Shigenobu HIRANO , Yasuo KATANO , Kenji KAMEYAMA , Norikazu IGARASHI , Aino HASEGAWA
Abstract: A light guide includes light guiding members including first and second light guiding members, an optical entrance having a plane on which the light is incident, a light guiding unit to guide the light incident on the optical entrance with repeated reflection, a light beam ejection unit to eject the light to an outside of the light guide, and an extraction unit to reflect the light guided by the light guiding unit toward the light beam ejection unit. The light guiding members guide and eject a light, and the second light guiding member is bonded to, at least, the light guiding unit of the first light guiding member.
-
公开(公告)号：US20220057640A1
公开(公告)日：2022-02-24
申请号：US17310215
申请日：2020-03-18
Applicant: Naoki NAKAMURA , Shiori OHSUGI , Shigenobu HIRANO , Yasuo KATANO , Kenji KAMEYAMA , Norikazu IGARASHI , Aino HASEGAWA , Satomi TANAKA , Masahiro ITOH , Yoshifumi SUDOH , Susumu MOMMA , Shun OKAZAKI
Inventor： Naoki NAKAMURA , Shiori OHSUGI , Shigenobu HIRANO , Yasuo KATANO , Kenji KAMEYAMA , Norikazu IGARASHI , Aino HASEGAWA , Satomi TANAKA , Masahiro ITOH , Yoshifumi SUDOH , Susumu MOMMA , Shun OKAZAKI
Abstract: A virtual image display device includes: an image display element that displays an image to be displayed as a virtual image; a propagation optical system that propagates light from the image display element; and a light guide member that guides the light propagated by the propagation optical system. The light guide member includes: a light beam incident part that introduces light including image information from the propagation optical system into the light guide member; an image extractor that extracts the light including image information from an inside of the light guide member; and an image emitter that emits the light including image information to an outside of the light guide member. The propagation optical system includes one or more optical members each having a curved surface shape that is non-rotationally symmetric with respect to an optical axis.
-
Patent Agency Ranking
公开(公告)号：US10783606B2
公开(公告)日：2020-09-22
申请号：US15346133
申请日：2016-11-08
Applicant: Hiromichi Atsuumi , Yuki Hayashi , Daisuke Ichii , Naoki Nakamura
Inventor： Hiromichi Atsuumi , Yuki Hayashi , Daisuke Ichii , Naoki Nakamura
IPC: G06T3/00 , B60K35/00 , G02B26/10 , G02B27/01 , G09G3/02 , G02B27/10 , G02B27/28 , G02B30/26 , G09G3/00
Abstract: An image display apparatus includes an image forming unit and a vehicle provided with the image display apparatus. The image forming unit includes a light source unit configured to emit light, an optical scanner configured to scan the light emitted from the light source unit two-dimensionally in a main scanning direction and a sub-scanning direction, and an intermediate image forming unit configured to form an intermediate image by the light scanned by the optical scanner. The image forming unit satisfies 0.3
-
公开(公告)号：US09864195B2
公开(公告)日：2018-01-09
申请号：US15066448
申请日：2016-03-10
Applicant: Naoki Nakamura , Daisuke Ichii , Hiromichi Atsuumi , Naoki Miyatake , Yuki Hayashi
Inventor： Naoki Nakamura , Daisuke Ichii , Hiromichi Atsuumi , Naoki Miyatake , Yuki Hayashi
CPC classification number: G02B27/0101 , G02B26/10 , G02B26/101 , G02B26/105 , G02B27/01 , G02B27/104 , G02B2027/011 , G02B2027/013 , G02B2027/0141 , G02B2027/0145 , G03B21/2013 , G03B21/2033 , G09G5/00
Abstract: An image display apparatus includes a light source device including a light source unit; a scanning optical system including an image forming unit on which an intermediate image is formed by light from the light source unit; and a virtual image optical system configured to guide light of the intermediate image by using a reflecting mirror and a curved transmissive reflection member. The scanning optical system includes an optical scanning unit configured to scan the light from the light source unit in a main scanning direction and a sub-scanning direction of the image forming unit. The image forming unit is a transmissive member curved with a convex surface toward the reflecting mirror.
-
公开(公告)号：US09857672B2
公开(公告)日：2018-01-02
申请号：US14202422
申请日：2014-03-10
Applicant: Tatsuya Takahashi , Takanobu Osaka , Naoki Nakamura , Kazuhiro Fujita , Takehiro Nishimori
Inventor： Tatsuya Takahashi , Takanobu Osaka , Naoki Nakamura , Kazuhiro Fujita , Takehiro Nishimori
CPC classification number: G03B21/2066 , F21V13/02 , F21V13/04 , G03B21/2013 , G03B21/204 , G03B21/208 , G03B33/06 , H04N9/3164
Abstract: A light source unit includes a first reflector having a reflection face; a second reflector having a reflection face; a plurality of light sources; and a light condensing optical system to condense light emitted from the plurality of light sources. Light beams emitted from the plurality of light sources are reflected at a first reflection position on the reflection face of the first reflector, and then reflected at a second reflection position on the reflection face of the second reflector. The second reflection position is close to an optical axis of the light condensing optical system compared to the first reflection position.
-
公开(公告)号：US09354498B2
公开(公告)日：2016-05-31
申请号：US14189142
申请日：2014-02-25
Applicant: Tatsuya Takahashi , Takanobu Osaka , Naoki Nakamura , Kazuhiro Fujita , Takehiro Nishimori
Inventor： Tatsuya Takahashi , Takanobu Osaka , Naoki Nakamura , Kazuhiro Fujita , Takehiro Nishimori
CPC classification number: G03B21/2066 , G02B19/0028 , G02B19/0061 , G03B21/2013
Abstract: A light source unit includes a first reflector having a reflection face; a second reflector having a reflection face; a plurality of light sources; and a light condensing optical system disposed between the first reflector and the second reflector. Light beams emitted from the plurality of light sources are reflected at a first reflection position on the reflection face of the first reflector, and then reflected at a second reflection position on the reflection face of the second reflector. The second reflection position is close to an optical axis of the light condensing optical system compared to the first reflection position. The light condensing optical system is configured such that the light beam passes through the light condensing optical system at least two times when the light beams reflect between the first reflector and the second reflector.
Abstract translation: 光源单元包括具有反射面的第一反射器; 具有反射面的第二反射体; 多个光源; 以及设置在第一反射器和第二反射器之间的聚光光学系统。 从多个光源发射的光束在第一反射器的反射面上的第一反射位置被反射，然后在第二反射器的反射面上的第二反射位置被反射。 与第一反射位置相比，第二反射位置接近聚光光学系统的光轴。 聚光光学系统被构造成使得当光束在第一反射器和第二反射器之间反射时，光束通过聚光系统至少两次。
-
公开(公告)号：US09008140B2
公开(公告)日：2015-04-14
申请号：US13798376
申请日：2013-03-13
Applicant: Naoki Nakamura
Inventor： Naoki Nakamura
CPC classification number: H01S5/323 , H01L33/30 , H01S5/2226 , H01S5/2275 , H01S5/3235
Abstract: A semiconductor laser includes: a p-type semiconductor substrate; a ridge having an active layer and cladding layers on the semiconductor substrate; a current blocking layer embedding side surfaces of the ridge; and an n-type contact layer on the ridge and the current blocking layer. The current blocking layer includes a first p-type layer, an n-type layer or a hole-trapping insulating semiconductor layer, a second p-type layer, a diffusion inhibiting layer, and a third p-type layer stacked, in order, from the semiconductor substrate. The n-type contact layer includes a p-type inverted region located in a portion of the n-type contact layer, in contact with the third p-type layer. Dopants in the third p-type layer diffuse into the p-type inverted region. The diffusion inhibiting layer is an undoped semiconductor material or a semi-insulating semiconductor material and inhibits dopants in the third p-type layer from being diffused into the active layer.
Abstract translation: 半导体激光器包括：p型半导体衬底; 在半导体衬底上具有有源层和包层的脊; 嵌入脊的侧表面的电流阻挡层; 和脊上的n型接触层和电流阻挡层。 电流阻挡层按顺序包括第一p型层，n型层或空穴俘获绝缘半导体层，第二p型层，扩散抑制层和第三p型层， 从半导体衬底。 n型接触层包括位于n型接触层的与第三p型层接触的部分中的p型反转区域。 第三p型层中的掺杂剂扩散到p型反转区域。 扩散抑制层是未掺杂的半导体材料或半绝缘半导体材料，并且抑制第三p型层中的掺杂剂扩散到有源层中。
-
-
-
-
-
-
-
-
-
Search Results
122
records
(took 0.02 seconds)
