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公开(公告)号：US20190219828A1
公开(公告)日：2019-07-18
申请号：US16367985
申请日：2019-03-28
Applicant: SEIKO EPSON CORPORATION
Inventor： Osamu YOKOYAMA
CPC classification number: G02B27/0172 , G02B5/1842 , G02B5/1866 , G02B6/124 , G02B26/105 , G02B2005/1804 , G02B2027/011 , G02B2027/0112 , G02B2027/0118 , G02B2027/013 , G02B2027/0178
Abstract: A light flux diameter expanding element includes a light guiding plate with a light input face and a light output face, and with a thickness of 0.2 mm to 0.8 mm; a diffraction grating on the input side; and a diffraction grating on the output side, and is provided so as to have the same grating period as that of the diffraction grating on the input side, in which a forming region of the diffraction grating on the input side is smaller than that of the output side, and a grating period of the diffraction grating on the input side is a period in which a small diffraction angle in diffraction angles of +1-st order diffracted light and −1-st order diffracted light, which are diffracted in the diffraction grating on the input side, in the light guiding plate becomes larger than a critical angle of the light guiding plate.
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公开(公告)号：US20180348523A1
公开(公告)日：2018-12-06
申请号：US15993760
申请日：2018-05-31
Applicant: SEIKO EPSON CORPORATION
Inventor： Osamu YOKOYAMA , Takeshi KOSHIHARA , Kunihiko YANO , Akira KOMATSU
CPC classification number: G02B27/0172 , G02B27/149 , G02B2027/0114 , G02B2027/0125 , G02B2027/0178
Abstract: A dichroic prism synthesizes display light emitted from a plurality of display panels, and a plate-shaped light guiding section guides the synthesized light to a light-emitting section. In the display light emitted from the respective pixels of the display panel, although a radiation angle of an effective luminous flux which reaches the eye of an observer is large in a direction corresponding to the vertical direction, a range of incident angle of intersecting effective luminous fluxes to the dichroic mirror is small.
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公开(公告)号：US20150016146A1
公开(公告)日：2015-01-15
申请号：US14500821
申请日：2014-09-29
Applicant: Seiko Epson Corporation
Inventor： Osamu YOKOYAMA
IPC: F21V8/00
CPC classification number: G02B6/0038 , G02B6/0055 , G02B6/0078 , G02F1/1336 , G02F1/133603 , G02F1/133605 , G02F1/133609 , G02F1/133611 , G02F1/133621 , G02F2001/133601 , G02F2001/133612 , G02F2001/133613 , G02F2203/30
Abstract: An illuminating device includes light emitting elements extending in a lengthwise direction and a light guide plate having a first principal surface for emitting light from the light emitting elements and a second principal surface facing the first principal surface. The light guide plate has light guide regions corresponding to the light emitting elements. The light emitting elements overlap the light guide plate on a side of the second principal surface of the light guide plate in plan view. The side of the second principal surface of the light guide plate has first sectional surfaces, on which light originated from each of the light emitting elements is incident. The side of the second principal surface of the light guide plate has second sectional surfaces, each having a reflection surface for reflecting the light originated from each light emitting element toward the first sectional surface, corresponding to the light emitting elements.
Abstract translation: 照明装置包括沿长度方向延伸的发光元件和具有用于从发光元件发射光的第一主表面和与第一主表面相对的第二主表面的导光板。 导光板具有对应于发光元件的导光区域。 在俯视图中，发光元件与导光板的第二主面一侧的导光板重叠。 导光板的第二主表面的一侧具有从每个发光元件入射的光的第一截面。 导光板的第二主表面的一侧具有第二截面，每个具有反射表面，用于将来自每个发光元件的光朝向与发光元件对应的第一截面。
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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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公开(公告)号：US20130250380A1
公开(公告)日：2013-09-26
申请号：US13767383
申请日：2013-02-14
Applicant: SEIKO EPSON CORPORATION
Inventor： Yoichi FUJIKAWA , Osamu YOKOYAMA , Takehiko KUBOTA
CPC classification number: G02B27/0103 , G02B27/0172 , G02B2027/0118 , H01L51/5203 , H01L51/5265
Abstract: A virtual image display apparatus includes an organic EL device that outputs light having one kind of wavelength band, a light guide member, and a reflection-type volume hologram that is disposed on a first face of the light guide member and diffracts and reflects light of a predetermined wavelength band of the light that has entered. The organic EL device includes an optical resonance structure that causes the above-mentioned light of one-kind wavelength band to resonate.
Abstract translation: 虚拟图像显示装置包括：输出具有一种波长带的光的有机EL器件，导光构件和反射型体积全息图，其设置在导光构件的第一面上，并衍射并反射 已经进入的光的预定波长带。 有机EL器件包括使上述一种波长带的光共振的光学谐振结构。
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Patent Agency Ranking
公开(公告)号：US20230094824A1
公开(公告)日：2023-03-30
申请号：US17955552
申请日：2022-09-29
Applicant: SEIKO EPSON CORPORATION
Inventor： Osamu YOKOYAMA
Abstract: In a virtual image display apparatus, as viewed from an exit pupil, a first emission diffraction grating and a second emission diffraction grating overlap, and a region, of the first emission diffraction grating, emitting first image light is different from a region, of the second emission diffraction grating, emitting second image light. As a result, an optical path from the first display element to the first emission diffraction grating can be prevented from being largely different from an optical path from a second display element to the second emission diffraction grating. Thus, unevenness in luminance in a virtual image displayed due to an increased difference in luminance between the first image light emitted from the first emission diffraction grating and the second image light emitted from the second emission diffraction grating can be suppressed.
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公开(公告)号：US20220328795A1
公开(公告)日：2022-10-13
申请号：US17855099
申请日：2022-06-30
Applicant: SEIKO EPSON CORPORATION
Inventor： Osamu YOKOYAMA , Takeshi KOSHIHARA , Mitsutaka IDE
Abstract: A display device of the present disclosure includes a substrate, a lens layer including a lens, a light-transmitting layer that contacts a lens surface of the lens, and has translucency, a pixel electrode disposed between the substrate and the lens layer, and a color filter disposed between the pixel electrode and the lens layer. The lens is disposed so as to correspond to the pixel electrode. A refractive index of a constituent material for the lens is lower than a refractive index of a constituent material for the light-transmitting layer.
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公开(公告)号：US20180088271A1
公开(公告)日：2018-03-29
申请号：US15703338
申请日：2017-09-13
Applicant: Seiko Epson Corporation
Inventor： Osamu YOKOYAMA
CPC classification number: G02B6/0055 , G02B6/003 , G02B6/005 , G02B27/0081 , G02B27/0172 , G02B2027/011 , G02B2027/0125
Abstract: An image display apparatus includes an image display device configured to emit image light, a light guide member, a projection lens configured to project the image light toward the light guide member, and a light extracting unit provided on the light guide member, the light extracting unit being configured to extract the image light guided in the light guide member toward an exit pupil. The light extracting unit includes a first edge located at an end portion of the light extracting unit on the light incident section side and a second edge located at an end portion on the opposite side, and is capable of transmitting see-through light having been transmitted in the light guide member toward the exit pupil, and at least one of the first edge and the second edge is located outside a see-through visual field range in which the see-through light passes through.
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公开(公告)号：US20170276946A1
公开(公告)日：2017-09-28
申请号：US15460646
申请日：2017-03-16
Applicant: SEIKO EPSON CORPORATION
Inventor： Osamu YOKOYAMA
CPC classification number: G02B27/0172 , G02B5/04 , G02B5/10 , G02B17/0856 , G02B2027/0178
Abstract: An image display device of the embodiment includes an image generation portion that emits image light, a prism optical element into which the image light enters, and a light guide optical system that guides the image light to the prism optical element. The prism optical element includes a prism member having a light refractive surface formed of a flat surface provided on a light incident side of the image light, and a concave mirror provided opposite the light refractive surface of the prism member and having a shape that is concave away from the light refractive surface.
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公开(公告)号：US20160124223A1
公开(公告)日：2016-05-05
申请号：US14884141
申请日：2015-10-15
Applicant: SEIKO EPSON CORPORATION
Inventor： Akira SHINBO , Osamu YOKOYAMA , Masatoshi YONEKUBO
CPC classification number: G02B27/0101 , G02B6/0023 , G02B6/005 , G02B6/34 , G02B27/0037 , G02B2027/011
Abstract: A virtual image display apparatus includes a first light guide that not only causes a display light flux incident through a first light incident surface to repeatedly undergo internal reflection to travel in a first direction away from the first light incident surface but also causes part of the display light flux to exit to the outside through areas of a first light exiting surface that is at least one of interfaces with the outside and extends in the first direction, a first light-incident-side diffraction grating that diffracts light incident thereon to cause the diffracted light to enter the first light guide, and a first light-exiting-side diffraction grating that diffracts light incident from the first light guide.
Abstract translation: 虚拟图像显示装置包括：第一光导，其不仅使通过第一光入射面入射的显示光束重复进行内反射，而且在第一方向上离开第一光入射面行进，而且还使部分显示 光通量从与外部的至少一个界面的第一光出射表面的区域向第二方向退出到外部，第一光入射侧衍射光栅衍射入射到其上的光以引起衍射 光进入第一光导，以及衍射从第一光导入射的光的第一光出射侧衍射光栅。
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