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公开(公告)号：US11592156B2
公开(公告)日：2023-02-28
申请号：US17396116
申请日：2021-08-06
发明人： Naoki Hanashima , Akio Takada , Kazuyuki Shibuya , Yusuke Matsuno
摘要： There is provided a method to manufacture a diffuser plate with better productivity and exhibiting an excellent diffusion property and having excellent durability with respect to light having large coherence, the microlens array diffuser plate including: a microlens group positioned on a surface of a transparent substrate. The diffuser plate includes two or more unit cells that are continuously set in array, the unit cell includes a plurality of microlenses positioned on the surface of the transparent substrate, and ridge lines between the microlenses adjacent to each other are nonparallel to each other, and are nonparallel to the transparent substrate.
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公开(公告)号：US20210003746A1
公开(公告)日：2021-01-07
申请号：US16963970
申请日：2019-01-21
摘要： In order to provide an optical device and a diffusion plate which has high transmittance and is capable of reducing speckle noise, the present it is a diffusion plate 1 in which a plurality of microlens cells 11 are arranged on both surfaces of a transparent substrate 10, the diffusion plate 1 having a first microlens array 12A which is formed on one surface of the transparent substrate 10 and comprises a plurality of concave or convex microlens cells 11, and a second microlens array 12B which is formed on the other surface on the reverse side from the one surface and comprises a plurality of concave or convex microlens cells 11, and the diffusion plate 1 being configured so that light emitted from the microlens cells 11 constituting the first microlens array 12A is incident on the microlens cells 11 constituting the second microlens array 12B.
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公开(公告)号：US20230324778A1
公开(公告)日：2023-10-12
申请号：US18041325
申请日：2021-08-13
CPC分类号： G03B21/2053 , G03B21/142 , G03B21/204 , G03B21/208
摘要： The optical system includes: a coherent light source; and a fixed diffusion plate and a relative movement diffusion plate which intersect with a traveling direction of light emitted from the coherent light source, wherein the fixed diffusion plate emits a light having a rectangular shape from an incident light, and wherein, in the relative movement diffusion plate, a diffusion surface of the light moves relative to the incident light.
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公开(公告)号：US11125413B2
公开(公告)日：2021-09-21
申请号：US15770816
申请日：2016-10-03
发明人： Naoki Hanashima , Akio Takada , Kazuyuki Shibuya , Yusuke Matsuno
摘要： There is provided a method to manufacture a diffuser plate with better productivity and exhibiting an excellent diffusion property and having excellent durability with respect to light having large coherence, the microlens array diffuser plate including: a microlens group positioned on a surface of a transparent substrate. The diffuser plate includes two or more unit cells that are continuously set in array, the unit cell includes a plurality of microlenses positioned on the surface of the transparent substrate, and ridge lines between the microlenses adjacent to each other are nonparallel to each other, and are nonparallel to the transparent substrate.
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公开(公告)号：US11002993B2
公开(公告)日：2021-05-11
申请号：US15185305
申请日：2016-06-17
发明人： Akio Takada , Eiji Takahashi , Nobuyuki Koike , Koji Sasaki , Naoki Hanashima
IPC分类号： G02F1/01 , G02B5/30 , G02B1/14 , G02F1/1335
摘要： Provided is a depolarizing plate having a superior degree of depolarization to conventional depolarizing plates. The depolarizing plate includes a light-transmitting substrate having a surface layer portion in which a fine pattern is provided that includes a plurality of curved lines randomly disposed at a pitch of no greater than a wavelength of light, and that exhibits structural birefringence.
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公开(公告)号：US10599022B2
公开(公告)日：2020-03-24
申请号：US15743716
申请日：2016-06-23
发明人： Naoki Hanashima
摘要： There is provided a diffuser plate, a display device, a projection device, and a lighting device that can achieve flat diffusion angle distribution characteristics while reducing a high-order diffraction component, the diffuser plate including: a single lens group positioned on a surface of a transparent substrate, in which curvature radii of respective single lenses composing the single lens group are varied as a whole, and peak positions of the respective single lenses are located irregularly, and a lens surface shape of at least one of the single lenses in the single lens group satisfies Equation 1 and Equation 2.
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公开(公告)号：US11971569B2
公开(公告)日：2024-04-30
申请号：US16077800
申请日：2017-03-23
发明人： Shunichi Kajiya , Kyoko Sakurai , Katsuhiro Doi , Kazuya Hayashibe , Naoki Hanashima , Naoto Kaneko
CPC分类号： G02B6/0036 , G02B1/118 , G02B6/0045
摘要： There is provided a light emitting device that can be used as a light guide plate and has an excellent antireflection function to extraneous light, and an optical body includes: a base material; a macro concave-convex structure that is formed on one surface of the base material and emits internally propagating light that is injected in an inside of the base material from a side surface of the base material, from another surface of the base material; and a micro concave-convex structure formed periodically to follow each of both surfaces of the base material and a surface of the macro concave-convex structure, and having an average period of concavity and convexity of less than or equal to a wavelength of visible light. The surface of the macro concave-convex structure has an inclined surface, and an arrangement of the micro concave-convex structure is a zigzag arrangement.
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公开(公告)号：US11841560B2
公开(公告)日：2023-12-12
申请号：US17178244
申请日：2021-02-18
发明人： Akio Takada , Eiji Takahashi , Nobuyuki Koike , Koji Sasaki , Naoki Hanashima
IPC分类号： G02F1/01 , G02B5/30 , G02B1/14 , G02F1/1335
CPC分类号： G02F1/0136 , G02B5/3083 , G02B1/14 , G02F1/1335
摘要： Provided is a depolarizing plate having a superior degree of depolarization to conventional depolarizing plates. The depolarizing plate includes a light-transmitting substrate having a surface layer portion in which a fine pattern is provided that includes a plurality of curved lines randomly disposed at a pitch of no greater than a wavelength of light, and that exhibits structural birefringence.
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公开(公告)号：US11353635B2
公开(公告)日：2022-06-07
申请号：US16271965
申请日：2019-02-11
摘要： There is provided a microlens array diffuser plate including: a microlens group positioned on a surface of a transparent substrate. The microlens group at least corresponding to a light ray entering part in the microlens array diffuser plate includes two or more unit cells that are continuous in an array sequence, and the unit cells include a plurality of microlenses positioned on the surface of the transparent substrate. The light ray entering part has at least two regions having different average diffusion angles.
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公开(公告)号：US10732341B2
公开(公告)日：2020-08-04
申请号：US16145840
申请日：2018-09-28
发明人： Koji Sasaki , Hiroshi Sugata , Naoki Hanashima
摘要： There is provided an optical body including: a base material; a second optical layer, formed on at least one surface of the base material, that reduces a reflection of extraneous light; and a first optical layer, laminated on top of a part of the second optical layer, that extracts internally propagating light incident inside the base material from a side face of the base material to an outside of the base material. On a surface of the first optical layer, a first concave-convex structure that reflects the internally propagating light is formed.
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