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公开(公告)号：US10310165B2
公开(公告)日：2019-06-04
申请号：US15703338
申请日：2017-09-13
发明人： Osamu Yokoyama
摘要： 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：US10281725B2
公开(公告)日：2019-05-07
申请号：US15433618
申请日：2017-02-15
发明人： Osamu Yokoyama
摘要： 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：US10025009B2
公开(公告)日：2018-07-17
申请号：US14156405
申请日：2014-01-15
CPC分类号： G02B5/18 , G02B6/0035 , G02B6/0076 , G02B27/0172 , G02B2027/0112 , G02B2027/0123 , G02B2027/0174 , G02B2027/0178 , G03H2001/2226
摘要： An optical device includes a light-conducting member, having a first panel surface disposed facing an image forming unit, that conducts image light incident on a light entry plane formed at an end of the first panel surface to a light exit plane formed in front of the viewer's eye; a first diffractive optics element, provided on the light entry plane, that diffracts the image light incident on the light entry plane in a predetermined direction and transmits that light into the light-conducting member; a second diffractive optics element, provided on the light exit plane, that diffracts the image light exiting from the light exit plane in a predetermined direction and transmits that light to the front of the viewer's eye; and one or more reflective planes disposed within a waveguide for the image light diffracted by the first diffractive optics element.
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公开(公告)号：US20170131552A1
公开(公告)日：2017-05-11
申请号：US15336306
申请日：2016-10-27
发明人： Osamu Yokoyama
CPC分类号： G02B27/0172 , G02B5/1814 , G02B5/1866 , G02B6/0016 , G02B6/0035 , G02B6/0076 , G02B2027/0125 , G02B2027/0178
摘要： In a luminous flux diameter expanding element, a light guide body includes an incident-side diffraction grating (first incident-side diffraction grating) provided on a surface thereof and an exit-side diffraction grating (first exit-side diffraction grating) provided on another surface thereof. The incident-side diffraction grating and the exit-side diffraction grating have the same grating direction and the same grating period. The diffraction angle of a positive first-order diffracted light and the diffraction angle of a negative first-order diffracted light of a beam incident on the incident-side diffraction grating are greater than or equal to a critical angle determined by the refractive index of the light guide body. The positive first-order diffracted light and the negative first-order diffracted light of the beam diffracted by the incident-side diffraction grating propagate in opposite directions along a y-direction within the light guide body and are emitted from the exit-side diffraction grating.
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5.发明授权Optical device including diffraction elements for diffracting light inside of a light guide, image projecting apparatus, and electronic device 有权光学装置，包括用于衍射光线内的光的衍射元件，图像投影装置和电子装置公开(公告)号：US09568730B2
公开(公告)日：2017-02-14
申请号：US14659863
申请日：2015-03-17
CPC分类号： G02B27/0103 , G02B6/0016 , G02B6/34 , G02B27/0101 , G02B27/0172 , G02B2027/0116 , G02B2027/0174 , G02B2027/0178
摘要： An optical device includes a light guide plate; a first diffraction element that is a transmission type diffraction element provided on a first face of the light guide plate and that diffracts and ejects at least a portion of light which is guided along inside the light guide plate; a second diffraction element that is a transmission type diffraction element provided on the first face of the light guide plate and that diffracts at least a portion of light proceeding to the light guide plate; and a third diffraction element that is a reflection type diffraction element provided on a face which is an opposite face of the light guide plate from the first face, and that diffracts at least a portion of light which enters an inside of the light guide plate via the second diffraction element.
摘要翻译： 光学装置包括导光板; 第一衍射元件，其是设置在所述导光板的第一面上的透射型衍射元件，其衍射并喷出沿着所述导光板的内部被引导的至少一部分光; 第二衍射元件，其是设置在所述导光板的所述第一面上并且衍射进入所述导光板的光的至少一部分的透射型衍射元件; 以及第三衍射元件，其是设置在与所述第一面相对的所述导光板的相对面的面上的反射型衍射元件，并且通过所述第三衍射元件衍射进入所述导光板内部的光的至少一部分， 第二衍射元件。
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公开(公告)号：US20160282615A1
公开(公告)日：2016-09-29
申请号：US15058178
申请日：2016-03-02
发明人： Osamu Yokoyama
CPC分类号： G02B27/0081 , G02B5/1861 , G02B5/1866 , G02B27/0172 , G02B27/4227 , G02B27/4272 , G02B2027/0125 , G02B2027/0178 , H04N9/14 , H04N9/31
摘要： A light flux diameter expanding element (a pupil expanding element) used in a retina scanning display device includes first to fourth diffraction gratings which are provided with grating patterns extending in a first direction, and fifth to eighth diffraction gratings which are provided with grating patterns extending in a second direction, and includes a half-wave plate between the first diffraction grating and the fifth diffraction grating. A first light flux of polarized light in which an electric field vector oscillates in the first direction enters the first diffraction grating. A second light flux of polarized light in which the electric field vector oscillates in the second direction enters the fifth diffraction grating due to the half-wave plate. Therefore, it is possible to expand a diameter of the incident first light flux in the first direction and the second direction and emit the result as the third light flux.
摘要翻译： 在视网膜扫描显示装置中使用的光通量扩径元件（光瞳扩展元件）包括设置有沿第一方向延伸的光栅图案的第一至第四衍射光栅以及设置有光栅图案延伸的第五至第八衍射光栅 并且在第一衍射光栅和第五衍射光栅之间包括半波片。 其中电场矢量在第一方向上振荡的第一偏振光通量进入第一衍射光栅。 其中电场矢量在第二方向上振荡的第二偏振光通量由于半波片而进入第五衍射光栅。 因此，可以使第一方向和第二方向上的入射的第一光束的直径扩大，并将结果作为第三光束发射。
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公开(公告)号：US20140204438A1
公开(公告)日：2014-07-24
申请号：US14156405
申请日：2014-01-15
CPC分类号： G02B5/18 , G02B6/0035 , G02B6/0076 , G02B27/0172 , G02B2027/0112 , G02B2027/0123 , G02B2027/0174 , G02B2027/0178 , G03H2001/2226
摘要： An optical device includes a light-conducting member, having a first panel surface disposed facing an image forming unit, that conducts image light incident on a light entry plane formed at an end of the first panel surface to a light exit plane formed in front of the viewer's eye; a first diffractive optics element, provided on the light entry plane, that diffracts the image light incident on the light entry plane in a predetermined direction and transmits that light into the light-conducting member; a second diffractive optics element, provided on the light exit plane, that diffracts the image light exiting from the light exit plane in a predetermined direction and transmits that light to the front of the viewer's eye; and one or more reflective planes disposed within a waveguide for the image light diffracted by the first diffractive optics element.
摘要翻译： 光学装置包括导光构件，其具有面向图像形成单元的第一面板表面，其将入射到形成在第一面板表面的端部处的入光面的图像光导向形成在第一面板表面前方的光出射面 观众的眼睛; 第一衍射光学元件，设置在光入射面上，沿着预定方向衍射入射在入射面上的图像光，并将该光透射到导光部件中; 设置在光出射平面上的第二衍射光学元件，其沿着预定方向衍射从光出射面出射的图像光，并将该光传播到观察者的眼睛的前方; 以及设置在用于由第一衍射光学元件衍射的图像光的波导内的一个或多个反射平面。
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公开(公告)号：US11552274B2
公开(公告)日：2023-01-10
申请号：US16869785
申请日：2020-05-08
发明人： Osamu Yokoyama , Takeshi Koshihara
摘要： A display device is provided that includes a substrate, a lens layer including a lens, a light-transmitting layer contacting a lens surface of the lens and having 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 correspondingly to the pixel electrode. A refractive index of a constituent material for the lens is higher than a refractive index of a constituent material for the light-transmitting layer.
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公开(公告)号：US11411205B2
公开(公告)日：2022-08-09
申请号：US16869678
申请日：2020-05-08
发明人： Osamu Yokoyama , Takeshi Koshihara , Mitsutaka Ide
摘要： 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：US10884244B2
公开(公告)日：2021-01-05
申请号：US16154775
申请日：2018-10-09
摘要： A display apparatus includes an image forming device, first and second light guide members that respectively have first and second light incidence portions and first and second light emission portions, a first diffractive optical element provided in the first light emission portion, a second diffractive optical element provided in the second light emission portion, and a first external light noise reduction element provided over the second light guide member. The first external light noise reduction element overlaps the first and second light emission portions. The first light incidence portion overlaps the second light incidence portion. Image light from the image forming device is incident on the first light incidence portion. A part of the image light is guided in the first light guide member. Another part of the image light is incident on the second light incidence portion and is guided in the second light guide member.
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