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1.发明公开公开(公告)号：US20230384490A1
公开(公告)日：2023-11-30
申请号：US18030914
申请日：2021-12-14
Applicant: DEXERIALS CORPORATION
Inventor： Mitsuo ARIMA , Masayuki ISHIWATA , Kazuhiko NODA , Shunsuke KANASUGI
IPC: G02B5/02
CPC classification number: G02B5/0215 , G02B5/0278
Abstract: Spectral noise produced by a diffraction phenomenon of a periodic structure can be reduced to improve homogeneity of intensity of straight diffusion light, and noise of zero-order diffraction light is reduced to improve light distribution properties as well. A diffusion plate 1 of a microlens array type that emits straight diffusion light includes a base material 10, and a plurality of cylindrical lenses 21 arranged in an X direction on an X-Y plane of the base material 10 and composed of elongated convex portions or elongated concave portions extending in a Y direction. An aperture width D and a radius of curvature R in the X direction of each of the cylindrical lenses 21 are randomly varied within variation ranges defined by variation full width rates δD and δR, respectively, using a reference aperture width Dk and a reference radius of curvature Rk as references, and an off-center amount Ec of each of the cylindrical lenses 21 is randomly vaned within a variation range defined by a variation full width rate δEc, where δD, δR, and δEc satisfy Expression (1), and at least either δD or δR is not 0%.
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公开(公告)号：US20210197504A1
公开(公告)日：2021-07-01
申请号：US17057317
申请日：2019-05-16
Applicant: DEXERIALS CORPORATION
Inventor： Hiroshi TAZAWA , Mitsuo ARIMA , Koji SASAKI
Abstract: Provided are a resin laminated optical body, a light source unit, an optical unit, a light irradiation device, an image display device, and a method for manufacturing a resin laminated optical body that are novel and improved, by which an optical apparatus can be reduced in size, and the light emission quality can be improved. To achieve the above object, according to an aspect of the present invention, a resin laminated optical body is provided including an optical base material having a curved surface, and a resin layer provided on the curved surface of the optical base material, in which a light diffusing structure is formed in a surface of the resin layer.
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公开(公告)号：US20240077658A1
公开(公告)日：2024-03-07
申请号：US17766950
申请日：2020-10-22
Applicant: DEXERIALS CORPORATION
Inventor： Mitsuo ARIMA , Masayuki ISHIWATA , Shunsuke KANASUGI
CPC classification number: G02B5/0263 , G02B3/06 , G02B5/0294
Abstract: To reduce unevenness in a luminance distribution in two directions of microlenses disposed in a form of a rectangular grid to improve uniformity of light distribution. Provided is a diffuser plate of a microlens array type including a base material, and a microlens array composed of a plurality of microlenses disposed on an X-Y plane on at least one surface of the base material using a rectangular grid as a reference, in which grid intervals Wx in an X direction of the microlenses disposed in the X direction of the rectangular grid are different from each other, grid intervals Wy in a Y direction of the microlenses disposed in the Y direction of the rectangular grid are different from each other, and surface shapes of the plurality of microlenses are different from each other.
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公开(公告)号：US20210271004A1
公开(公告)日：2021-09-02
申请号：US17274598
申请日：2019-09-19
Applicant: DEXERIALS CORPORATION
Inventor： Mitsuo ARIMA , Kazuki HOSHI
Abstract: There is provided an optical body, a lighting device, and an image display device that are novel and improved, and can increase a homogeneous light distribution property. The optical body is provided in which a composite structure of main structural bodies is deployed continuously within a plane of a base material, in which phase distributions of the main structural bodies within the plane of the base material are equivalent to amplitude distributions each obtained by subjecting a pupil function of a two-dimensional optical aperture to Fourier transform, and a peak ratio value is less than or equal to 2.5.
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公开(公告)号：US20190153776A1
公开(公告)日：2019-05-23
申请号：US16091639
申请日：2017-03-22
Applicant: Dexerials Corporation
Inventor： Mitsuo ARIMA , Atsushi SHIBUYA , Tsutomu NAGAHAMA
Abstract: An optical body includes a first optical transparent layer having quadrangular pyramid-shaped depressions, a wavelength-selective reflecting layer formed on the depressions and selectively reflecting light of a specific wavelength band, and a second optical transparent layer formed on the wavelength-selective reflecting layer. When (θ, ϕ) is taken as the incident angle (θ: angle between perpendicular line relative to second optical transparent layer acting as incident surface and light incident on incident surface; ϕ: angle between specific straight line within incident surface and component resulting from projection of incident light on incident surface), with respect to incident light that is incident on the incident surface from different ϕ directions at θ=60°, the optical body has an average reflection angle of reflected light to the same quadrant as the incident light of 30° or more.
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Patent Agency Ranking
公开(公告)号：US20160313474A1
公开(公告)日：2016-10-27
申请号：US15104456
申请日：2015-01-05
Applicant: DEXERIALS CORPORATION
Inventor： Yutaka WADA , Mitsuo ARIMA
CPC classification number: G02B1/118 , B29C59/022 , B29C2059/023 , G02B27/0012
Abstract: A method for designing anti-reflective structure in which plurality of nanostructures formed of projected portions on substrate surface are provided at intervals equal to or less than visible light wavelength, in order to reduce chroma (√(a*2+b*2)) of reflected light with respect to white light to as close to zero as possible, average height of nanostructures from flat portion of substrate surface is 180 nm or greater and 290 nm or less; and filling rate of nanostructures, i.e., ratio of area of bottom surface of nanostructures to area of substrate surface in plan view of anti-reflective structure is defined, in terms of relationship between filling rate and chroma (√(a*2+b*2)) of reflected light from anti-reflective structure with respect to white light, so as to fall within range of ±5% of filling rate at which chroma takes on minimum value.
Abstract translation: 为了降低色度（√（a * 2 + b * 2）），以等于或小于可见光波长的间隔设置多个由基板表面上的突出部分形成的纳米结构的抗反射结构的设计方法， 的相对于白光的反射光尽可能接近于零，从基板表面的平坦部分的纳米结构的平均高度为180nm以上且290nm以下; 并根据填充率与色度的关系定义纳米结构的填充率，即纳米结构底面积与基板表面面积的比例（√（a * 2 + b * 2）），反射结构相对于白光的反射光，落在色度达到最小值的填充率±5％的范围内。
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公开(公告)号：US20230025421A1
公开(公告)日：2023-01-26
申请号：US17784685
申请日：2020-12-08
Applicant: DEXERIALS CORPORATION
Inventor： Kazuhiko NODA , Katsuhiro DOI , Kyoko SAKURAI , Asahiko NOGAMI , Mitsuo ARIMA
Abstract: A method for manufacturing a roll mold by cutting a roll, includes generating a control waveform based on a signal corresponding to a rotary position of the roll, and making a plurality of cuts on a surface of the roll by, while the roll is rotated, reciprocating a cutting blade in a radial direction of the roll in accordance with the control waveform. Making the plurality of cuts includes at each of a plurality of predetermined locations, making a predetermined number of cuts of predetermined depth based on the control waveform. Generating the control waveform includes generating a control waveform dictating that, when multiple cuts are made at a predetermined location, each subsequent cut will have a smaller depth than a preceding cut.
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公开(公告)号：US20230015044A1
公开(公告)日：2023-01-19
申请号：US17784695
申请日：2020-12-08
Applicant: DEXERIALS CORPORATION
Inventor： Kazuhiko NODA , Katsuhiro DOI , Kyoko SAKURAI , Asahiko NOGAMI , Mitsuo ARIMA
Abstract: A method for manufacturing a roll mold by cutting a roll, includes generating a control waveform based on a signal corresponding to a rotary position of the roll, and making a plurality of cuts on a surface of the roll by, while the roll is rotated, reciprocating a cutting blade in a radial direction of the roll in accordance with the control waveform. Making the plurality of cuts includes at each of a plurality of predetermined locations, making a predetermined number of cuts of predetermined depth based on the control waveform. Generating the control waveform includes generating a control waveform dictating that the predetermined locations, the predetermined depths, or both are randomly selected. Generating the control waveform includes generating a control waveform dictating that, when multiple cuts are made at a predetermined location, each subsequent cut will have a smaller depth than a preceding cut.
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公开(公告)号：US20210325574A1
公开(公告)日：2021-10-21
申请号：US17273076
申请日：2019-09-19
Applicant: DEXERIALS CORPORATION
Inventor： Mitsuo ARIMA , Masayuki ISHIWATA
Abstract: To provide a light diffuser plate that can control an anisotropic shape of diffused light. The light diffuser plate includes a base material, and a group structure including a plurality of convexities or concavities provided on at least one main surface of the base material and having anisotropic shapes extended in a common direction. The plurality of convexities or concavities are arranged randomly and densely on the main surface of the base material. A boundary between adjacent ones of the plurality of convexities or concavities includes a plurality of curved lines having curvatures different from each other.
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公开(公告)号：US20180284326A1
公开(公告)日：2018-10-04
申请号：US15753751
申请日：2016-09-30
Applicant: DEXERIALS CORPORATION
Inventor： Mitsuo ARIMA , Masayuki ISHIWATA , Tsutomu NAGAHAMA
Abstract: There is provided a diffuser plate, a display device, a projection device, and a lighting device that can achieve more even diffusion angle distribution properties, the diffuser plate being of a microlens array type, and including: a single lens group located on a surface of a transparent base material, in which aperture sizes and radii of curvatures of respective single lenses constituting the single lens group vary in the single lens group as a whole, and vertex positions of the respective single lenses are located irregularly, and energy distribution of light that transmits through the single lens group is substantially even in a predetermined diffusion angle range.
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