公开(公告)号：US20220026716A1

公开(公告)日：2022-01-27

申请号：US17378812

申请日：2021-07-19

申请人： Yoshifumi SUDOH ,  Naoki NAKAMURA ,  Masahiro ITOH ,  Susumu MOMMA ,  Shun OKAZAKI ,  Shigenobu HIRANO ,  Yasuo KATANO ,  Kenji KAMEYAMA ,  Norikazu IGARASHI ,  Aino HASEGAWA ,  Takashi MAKI ,  Masamichi YAMADA ,  Takemasa TSUTSUI

发明人： Yoshifumi SUDOH ,  Naoki NAKAMURA ,  Masahiro ITOH ,  Susumu MOMMA ,  Shun OKAZAKI ,  Shigenobu HIRANO ,  Yasuo KATANO ,  Kenji KAMEYAMA ,  Norikazu IGARASHI ,  Aino HASEGAWA ,  Takashi MAKI ,  Masamichi YAMADA ,  Takemasa TSUTSUI

IPC分类号： G02B27/01 ,  F21V8/00 ,  G02B3/06 ,  G02B9/14 ,  G02B9/10

摘要： A propagation optical system includes: a first optical system; an intermediate optical element; and a second optical system. The first optical system, the intermediate optical element, and the second optical system being sequentially arranged in a direction from the image display element toward the light guide member along an optical axis. The intermediate optical element has a non-rotationally symmetric curved surface, of which shape is non-rotationally symmetric about the optical axis. A cross-sectional shape, of the non-rotationally symmetric curved surface, in a first plane including the optical axis is non-arc shape. The first plane is a plane in which the non-rotationally symmetric surface has a strongest positive power among planes including the optical axis. The propagation optical system is configured to form, between the first optical system and the second optical system, an intermediate image corresponding to an image displayed on the image display element.

公开(公告)号：US20220252838A1

公开(公告)日：2022-08-11

申请号：US17588354

申请日：2022-01-31

申请人： Yoshifumi SUDOH ,  Yasuo KATANO ,  Shigenobu HIRANO ,  Masahiro ITOH ,  Naoki NAKAMURA ,  Susumu MOMMA ,  Shun OKAZAKI ,  Masamichi YAMADA ,  Kenji KAMEYAMA ,  Norikazu IGARASHI ,  Aino HASEGAWA ,  Takashi MAKI

发明人： Yoshifumi SUDOH ,  Yasuo KATANO ,  Shigenobu HIRANO ,  Masahiro ITOH ,  Naoki NAKAMURA ,  Susumu MOMMA ,  Shun OKAZAKI ,  Masamichi YAMADA ,  Kenji KAMEYAMA ,  Norikazu IGARASHI ,  Aino HASEGAWA ,  Takashi MAKI

IPC分类号： G02B13/00 ,  H04N5/225 ,  G02B7/02 ,  G02B3/00

摘要： A lens unit includes: a lens group including: an object-side lens closest to an object side in the lens group; an image-side lens closest to an image side in the lens group; and an intermediate lens between the object-side lens and the image-side lens, the object-side lens, the image-side lens, and the intermediate lens being arranged along an optical axis; a first holder holding an edge surface of the object-side lens and an edge surface of the intermediate lens; and a second holder separate from the first holder, the second holder holding the edge surface of the intermediate lens and an edge surface of the image-side lens.

公开(公告)号：US20210165221A1

公开(公告)日：2021-06-03

申请号：US16950365

申请日：2020-11-17

申请人： Aino HASEGAWA ,  Shigenobu HIRANO ,  Yasuo KATANO ,  Kenji KAMEYAMA ,  Norikazu IGARASHI ,  Naoki NAKAMURA ,  Yoshifumi SUDOH ,  Masahiro ITOH ,  Shun OKAZAKI ,  Susumu MOMMA

发明人： Aino HASEGAWA ,  Shigenobu HIRANO ,  Yasuo KATANO ,  Kenji KAMEYAMA ,  Norikazu IGARASHI ,  Naoki NAKAMURA ,  Yoshifumi SUDOH ,  Masahiro ITOH ,  Shun OKAZAKI ,  Susumu MOMMA

IPC分类号： G02B27/01 ,  G02B6/42 ,  G02B27/64

摘要： A head-mounted display device includes a display element to display an image; a light guide member to emit the image displayed on the display element to an eye of a wearer; a housing including an optical system to guide image light of the image displayed on the display element to the light guide member; and an adjustment member provided on a side of the light guide member opposite to the optical system, and to bend the housing on a side opposite to a face of the wearer.

公开(公告)号：US20230280592A1

公开(公告)日：2023-09-07

申请号：US18008183

申请日：2021-06-09

申请人： Naoki NAKAMURA ,  Masahiro ITOH ,  Susumu MOMMA ,  Shigenobu HIRANO ,  Yoshifumi SUDOH ,  Shun OKAZAKI ,  Yasuo KATANO ,  Kenji KAMEYAMA ,  Norikazu IGARASHI ,  Masamichi YAMADA ,  Aino HASEGAWA ,  Takashi MAKI

发明人： Naoki NAKAMURA ,  Masahiro ITOH ,  Susumu MOMMA ,  Shigenobu HIRANO ,  Yoshifumi SUDOH ,  Shun OKAZAKI ,  Yasuo KATANO ,  Kenji KAMEYAMA ,  Norikazu IGARASHI ,  Masamichi YAMADA ,  Aino HASEGAWA ,  Takashi MAKI

IPC分类号： G02B27/01 ,  F21V8/00

CPC分类号： G02B27/0172 ,  G02B6/0018 ,  G02B2027/0123 ,  G02B2027/0118

摘要： 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：US20230003931A1

公开(公告)日：2023-01-05

申请号：US17781715

申请日：2021-01-06

申请人： Naoki NAKAMURA ,  Masahiro ITOH ,  Yoshifumi SUDOH ,  Susumu MOMMA ,  Shun OKAZAKI ,  Shigenobu HIRANO ,  Yasuo KATANO ,  Kenji KAMEYAMA ,  Norikazu IGARASHI ,  Aino HASEGAWA

发明人： Naoki NAKAMURA ,  Masahiro ITOH ,  Yoshifumi SUDOH ,  Susumu MOMMA ,  Shun OKAZAKI ,  Shigenobu HIRANO ,  Yasuo KATANO ,  Kenji KAMEYAMA ,  Norikazu IGARASHI ,  Aino HASEGAWA

IPC分类号： F21V8/00 ,  G02B27/01

摘要： 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

申请人： Naoki NAKAMURA ,  Shiori OHSUGI ,  Shigenobu HIRANO ,  Yasuo KATANO ,  Kenji KAMEYAMA ,  Norikazu IGARASHI ,  Aino HASEGAWA ,  Satomi TANAKA ,  Masahiro ITOH ,  Yoshifumi SUDOH ,  Susumu MOMMA ,  Shun OKAZAKI

发明人： Naoki NAKAMURA ,  Shiori OHSUGI ,  Shigenobu HIRANO ,  Yasuo KATANO ,  Kenji KAMEYAMA ,  Norikazu IGARASHI ,  Aino HASEGAWA ,  Satomi TANAKA ,  Masahiro ITOH ,  Yoshifumi SUDOH ,  Susumu MOMMA ,  Shun OKAZAKI

IPC分类号： G02B27/09 ,  G02B27/30

摘要： 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.

公开(公告)号：US20230039870A1

公开(公告)日：2023-02-09

申请号：US17876543

申请日：2022-07-29

申请人： Susumu MOMMA ,  Naoki NAKAMURA ,  Masahiro ITOH ,  Yoshifumi SUDOH ,  Shigenobu HIRANO ,  Yasuo KATANO

发明人： Susumu MOMMA ,  Naoki NAKAMURA ,  Masahiro ITOH ,  Yoshifumi SUDOH ,  Shigenobu HIRANO ,  Yasuo KATANO

IPC分类号： G02B6/42 ,  G02B27/01

摘要： 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：US20240201501A1

公开(公告)日：2024-06-20

申请号：US18540914

申请日：2023-12-15

申请人： Aino HASEGAWA ,  Shigenobu HIRANO ,  Yasuo KATANO ,  Masahiro ITOH ,  Takashi MAKI ,  Yoshifumi SUDOH

发明人： Aino HASEGAWA ,  Shigenobu HIRANO ,  Yasuo KATANO ,  Masahiro ITOH ,  Takashi MAKI ,  Yoshifumi SUDOH

IPC分类号： G02B27/01

CPC分类号： G02B27/0172 ,  G02B2027/0178

摘要： A head-mounted display includes a light source to emit image light; and an optical component disposed opposite to a head, the optical component has multiple reflective surfaces arrayed in a first direction to reflect the image light to an eye in the head. At least two of the multiple reflective surfaces are disposed in a second direction tilted with respective to the first direction.

公开(公告)号：US20240019699A1

公开(公告)日：2024-01-18

申请号：US18219098

申请日：2023-07-07

申请人： Yoshifumi SUDOH

发明人： Yoshifumi SUDOH

IPC分类号： G02B27/01 ,  G02B27/14 ,  F21V8/00 ,  G02B27/02

CPC分类号： G02B27/0172 ,  G02B27/144 ,  G02B6/0031 ,  G02B6/0055 ,  G02B27/145 ,  G02B27/025 ,  G02B2027/0178

摘要： An optical system includes: a first optical portion, on which image light from an image display element is incident; a light guide configured to guide the image light incident from the first optical portion; and a second optical portion configured to direct the image light guided in the light guide to an object. The first optical portion has an anamorphic surface having: a first shape in a first direction; and a second shape in a second direction different from the first direction, the first shape being different from the second shape. The first optical portion forms an intermediate image of the image light.

公开(公告)号：US20180275380A1

公开(公告)日：2018-09-27

申请号：US15828013

申请日：2017-11-30

申请人： Yoshifumi SUDOH

发明人： Yoshifumi SUDOH

IPC分类号： G02B15/16 ,  G02B9/64 ,  G02B13/00

CPC分类号： G02B15/142 ,  G02B9/64 ,  G02B13/0045 ,  G02B13/005 ,  G02B15/163 ,  G02B15/17

摘要： An image forming lens includes a first lens group and a second lens group. The first lens group has positive refractive power moved toward the object side when focusing from a long distance to a short distance. The second lens group has positive refractive power arranged closer to the image side than the first lens group. The second lens group includes, in order from the object side to the image side, a negative lens having a concave surface on the image side, a negative meniscus lens having a concave surface on the object side, and a positive lens. The focal length f21 of the negative lens and the focal length f22 of the negative meniscus lens satisfy the following conditional expression: (1) 0.1