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公开(公告)号：US20220107503A1
公开(公告)日：2022-04-07
申请号：US17554593
申请日：2021-12-17
Applicant: SEIKO EPSON CORPORATION
Inventor： Masatoshi YONEKUBO , Akio FUKASE
Abstract: A head-mounted display apparatus includes a cross dichroic prism including four triangular prisms that are mutually bonded, and a first dichroic film and a second dichroic film provided between adjacent prisms of the four triangular prisms, a plurality of display panels arranged respectively opposite to a plurality of light incident planes of the cross dichroic prism, and a projection optical system configured to project light emitted from the cross dichroic prism onto a pupil of a user. The cross dichroic prism includes an optically imperfect part at a center of a bonded part of the four triangular prisms. A ratio between an aerial conversion length from each of light-emission planes of the plurality of display panels to the center of the bonded part, and a width of the optically imperfect part, is greater than or equal to 250:1.
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公开(公告)号：US20210239990A1
公开(公告)日：2021-08-05
申请号：US17162873
申请日：2021-01-29
Applicant: SEIKO EPSON CORPORATION
Inventor： Masatoshi YONEKUBO , Takashi TAKEDA , Mitsutaka IDE
IPC: G02B27/01
Abstract: A display module includes an image light generation device configured to generate image light, a first reflection section configured to reflect the image light from the image light generation device, a first diffraction element configured to diffract the image light entering a first incident surface, a second reflection section configured to reflect the image light from the first diffraction element, and a second diffraction element configured to diffract the image light entering a second incident surface, thereby forming an exit pupil. When viewed from a normal line direction of a virtual plane including a normal line of the first incident surface and a normal line of the second incident surface, an optical axis of the image light from the image light generation device toward the first reflection section and an optical axis of the image light from the first diffraction element toward the second reflection section intersect each other.
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公开(公告)号：US20210239989A1
公开(公告)日：2021-08-05
申请号：US17162186
申请日：2021-01-29
Applicant: SEIKO EPSON CORPORATION
Inventor： Mitsutaka IDE , Masatoshi YONEKUBO
IPC: G02B27/01
Abstract: An image light generation module includes a first display element configured to emit first image light, a second display element configured to emit second image light, a third display element configured to emit third image light, a combining prism configured to emit combined image light combined from the first image light, the second image light, and the third image light, and a first gap defining member that defines a first gap between the first display element and the combining prism, a second gap defining member that defines a second gap between the second display element and the combining prism, and a third gap defining member that defines a third gap between the third display element and the combining prism, in which at least one of the first gap, the second gap, and the third gap is different in size from another of the gaps.
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公开(公告)号：US20210165216A1
公开(公告)日：2021-06-03
申请号：US17105516
申请日：2020-11-26
Applicant: SEIKO EPSON CORPORATION
Inventor： Masayuki TAKAGI , Masatoshi YONEKUBO , Mitsutaka IDE
Abstract: In a correction optical member for an HMD, a first optical member and a second optical member are arranged side by side. The first optical member includes a first diffraction grating disposed on a first surface and a second diffraction grating disposed on a second surface that is opposite to the first surface so as to face away from the first diffraction grating. The second optical member includes a third diffraction grating disposed on a third surface that is arranged in an extending direction of the first surface, and a fourth diffraction grating disposed on a fourth surface that is arranged in an extending direction of the second surface.
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公开(公告)号：US20160161755A1
公开(公告)日：2016-06-09
申请号：US14960792
申请日：2015-12-07
Applicant: Seiko Epson Corporation
Inventor： Masatoshi YONEKUBO , Daisuke ISHIDA
CPC classification number: G02B27/4227 , G02B6/0026 , G02B26/10 , G02B27/0081 , G02B27/0172 , G02B27/0176 , G02B27/4272 , G02B2027/0123 , G02B2027/015 , G02B2027/0174 , G06F3/012 , G06T19/006
Abstract: An image display apparatus includes an image light generator that generates video light modulated based on a video signal, a light diffracting section (first diffractive optical element) that diffracts the video light outputted from the image light generator, a light sweeper (optical scanner) that spatially scans the video light, and a reflector including a light diffracting section (second diffractive optical element) that diffracts the video light scanned by the light sweeper, and the light diffracting section (first diffractive optical element) is provided on an optical path between the image light generator and the light sweeper. The light diffracting section (first diffractive optical element) preferably has a fixed interval between interference fringes, and the light diffracting section (second diffractive optical element) preferably has portions where intervals between interference fringes differ from each other.
Abstract translation: 图像显示装置包括：图像光发生器，其生成基于视频信号调制的视频光;衍射部（第一衍射光学元件），衍射从图像光发生器输出的视频光;光扫描器 在空间上扫描视频光，并且包括衍射由光扫描器扫描的视频光的光衍射部（第二衍射光学元件）和光衍射部（第一衍射光学元件）的反射器设置在光路 图像光发生器和扫光器。 光衍射部（第一衍射光学元件）优选在干涉条纹之间具有固定的间隔，并且光衍射部（第二衍射光学元件）优选具有彼此之间的干涉条纹之间的间隔的部分。
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Patent Agency Ranking
公开(公告)号：US20140340749A1
公开(公告)日：2014-11-20
申请号：US14120347
申请日：2014-05-14
Applicant: SEIKO EPSON CORPORATION
Inventor： Fumika YAMADA , Masatoshi YONEKUBO , Osamu YOKOYAMA
IPC: G02B27/01
CPC classification number: G02B27/0172 , G02B5/30 , G02B27/0101 , G02B27/017 , G02B2027/0118 , G02B2027/0178
Abstract: In a display apparatus, image light emitted from an image forming device is incident on an image light incidence portion of a light guide member after being diffracted by a second diffractive optical element, and emitted from an image light emission portion after moving forward in the light guide member. The image light emitted from the image light emission portion is diffracted by a first diffractive optical element and reaches the eyes of an observer. On a position where unnecessary external light is made incident on the light guide member, an external light noise reduction element which has a polarizing member and the like is provided. For this reason, even when the unnecessary external light is made incident on the light guide member, it is possible to inhibit the unnecessary external light from reaching the eye of the observer.
Abstract translation: 在显示装置中，从图像形成装置发射的图像光在被第二衍射光学元件衍射之后入射到导光部件的图像光入射部分，并且在光线向前移动之后从图像发光部分发射 导游会员 从图像发光部发射的图像光被第一衍射光学元件衍射并到达观察者的眼睛。 在不必要的外部光入射到导光构件上的位置设置有具有偏光构件等的外部光噪声降低元件。 因此，即使不必要的外部光入射到导光部件上，也可以抑制不必要的外部光到达观察者的眼睛。
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7.发明申请公开(公告)号：US20200333610A1
公开(公告)日：2020-10-22
申请号：US16918008
申请日：2020-07-01
Applicant: SEIKO EPSON CORPORATION
Inventor： Masatoshi YONEKUBO , Osamu YOKOYAMA , Takashi TAKEDA , Mitsutaka IDE , Daisuke ISHIDA
Abstract: The image display device includes an image generating unit that emits first image light, a pupil expanding element that expands a diameter of a light flux included in the first image light from the image generating unit to obtain second image light, a first light condensing optical system that condenses the second image light and forms an intermediate image, and a second light condensing optical system that condenses light from the intermediate image and generates a virtual image on eye of a viewer, in a plane including at least the image generating unit, the pupil expanding element, and the eye of the viewer, a maximum emission angle of the first image light is smaller than a maximum viewing angle of the virtual image, and the diameter of the light flux included in the second image light is greater than that of a light flux included in the virtual image.
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公开(公告)号：US20200310133A1
公开(公告)日：2020-10-01
申请号：US16830873
申请日：2020-03-26
Applicant: SEIKO EPSON CORPORATION
Inventor： Mitsutaka IDE , Masatoshi YONEKUBO
Abstract: A virtual image display apparatus includes an imaging light emitting unit configured to emit imaging light, and a light-guiding unit configured to guide the imaging light. The light-guiding unit is configured by arranging a first, a second, a third, and a fourth optical system in the stated order in a travel direction of the imaging light. The first optical system forms a first intermediate image of the imaging light. The second optical system includes a first diffraction element forming a pupil between the second and the fourth optical system. The third optical system forms a second intermediate image. The fourth optical system includes a second diffraction element forming an exit pupil by diffracting the imaging light. At the exit pupil, luminance of pixels at a central position of the imaging light and luminance of pixels at end positions of the imaging light differ.
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公开(公告)号：US20190235266A1
公开(公告)日：2019-08-01
申请号：US16257109
申请日：2019-01-25
Applicant: SEIKO EPSON CORPORATION
Inventor： Mitsutaka IDE , Masatoshi YONEKUBO
CPC classification number: G02B27/4227 , G02B5/1814 , G02B27/0081 , G02B27/0172 , G02B2027/0105 , G02B2027/0174 , G02B2027/0178
Abstract: In an optical system, a first optical section having positive power, a second optical section provided with a first diffractive element and having positive power, a third optical section having positive power, and a fourth optical section provided with a second diffractive element and having positive power are disposed along a light path of image light emitted from an image light generation device. A first intermediate image of the image light is formed between the first optical section and the third optical section, a pupil is formed in the vicinity of the third optical section, a second intermediate image of the image light is formed between the third optical section and the fourth optical section, and the fourth optical section collimates the image light to form an exit pupil. The first diffractive element and the second diffractive element are in a conjugate relation or a roughly conjugate relation.
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公开(公告)号：US20190094451A1
公开(公告)日：2019-03-28
申请号：US16143985
申请日：2018-09-27
Applicant: SEIKO EPSON CORPORATION
Inventor： Shohei YOSHIDA , Atsushi SAITO , Hiroyuki TATSUGI , Masatoshi YONEKUBO
IPC: F21V8/00 , H04N13/344 , G02B27/09
CPC classification number: G02B6/0055 , G02B27/01 , G02B27/0172 , G02B27/095 , G02B27/0977 , G02B2027/0121 , G02B2027/0178 , H04N13/344
Abstract: A light-guiding device used in a display device includes a plurality of first half mirrors between a first light-guiding body and a second light-guiding body. Each of the first half mirrors is formed on a first surface extending along a first direction of the first surface and a second surface extending along a second direction in the first light-guiding body. The first light-guiding body includes a third surface overlapping the second surface in a direction along a third direction in which two first surfaces located on both sides of the second surface do not overlap each other between the first surface and the second surface. The third surface extends in a direction different from the first direction.
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