JP2021168248A - 照明装置 - Google Patents
照明装置 Download PDFInfo
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- JP2021168248A JP2021168248A JP2020070754A JP2020070754A JP2021168248A JP 2021168248 A JP2021168248 A JP 2021168248A JP 2020070754 A JP2020070754 A JP 2020070754A JP 2020070754 A JP2020070754 A JP 2020070754A JP 2021168248 A JP2021168248 A JP 2021168248A
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- crystal lens
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- 238000005286 illumination Methods 0.000 title abstract description 4
- 239000004973 liquid crystal related substance Substances 0.000 claims description 170
- 239000000758 substrate Substances 0.000 claims description 72
- 238000009826 distribution Methods 0.000 abstract description 46
- 244000126211 Hericium coralloides Species 0.000 description 21
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000003566 sealing material Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 240000003380 Passiflora rubra Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 210000000007 bat wing Anatomy 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133526—Lenses, e.g. microlenses or Fresnel lenses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/003—Controlling the distribution of the light emitted by adjustment of elements by interposition of elements with electrically controlled variable light transmissivity, e.g. liquid crystal elements or electrochromic devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/12—Combinations of only three kinds of elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
- F21V5/005—Refractors for light sources using microoptical elements for redirecting or diffusing light using microprisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
- G02F1/0305—Constructional arrangements
- G02F1/0316—Electrodes
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
- F21V2200/20—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of a generally planar shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
Abstract
【解決手段】
主面と裏面を有し、中央に第1の孔を有する円板状の導光板13と、前記導光板13の前記裏面側に配置し、中央に第2の孔を有する円板状の反射シート12と、前記導光板13の前記主面側に配置し、同心円状の第1のプリズムアレイを有する反射シート14を有し、前記導光板13の前記孔の前記プリズムシート側には反射ミラー90が配置し、前記反射ミラー90と対向してLED20が配置していることを特徴とする照明装置。
【選択図】図6
Description
前記導光板の前記裏面側に配置し、中央に第2の孔を有する円板状の反射シートと、前記導光板の前記主面側に配置し、同心円状の第1のプリズムアレイを有するプリズムシートを有し、前記導光板の前記孔の前記プリズムシート側には反射ミラーが配置し、前記反射ミラーと対向してLEDが配置していることを特徴とする照明装置。
Claims (16)
- 主面と裏面を有し、中央に第1の孔を有する円板状の導光板と、
前記導光板の前記裏面側に配置し、中央に第2の孔を有する円板状の反射シートと、
前記導光板の前記主面側に配置し、同心円状の第1のプリズムアレイを有するプリズムシートを有し、
前記導光板の前記孔の前記プリズムシート側には反射ミラーが配置し、
前記反射ミラーと対向してLEDが配置していることを特徴とする照明装置。 - 前記LEDは、前記導光板の前記孔の内部に存在していることを特徴とする請求項1に記載の照明装置。
- 前記LEDと前記反射ミラーとの間は空間が存在していることを特徴とする請求項1に記載の照明装置。
- 前記LEDは、平面で視て、前記反射シートの前記第2の孔内に存在していることを特徴とする請求項1に記載の照明装置。
- 前記反射ミラーは反射曲面と、前記反射曲面の周辺に前記導光板の前記孔に取り付けるための、平坦部を有していることを特徴とする請求項1に記載の照明装置。
- 前記プリズムシートの前記第1のプリズムアレイは、前記導光板と対向する面に形成されていることを特徴とする請求項1に記載の照明装置。
- 前記導光板の前記主面には、半径方向に延在し、円周方向に放射状に配列した第2のプリズムアレイが形成され、前記導光板の前記裏面には、同心円状に第3のプリズムアレイが形成されていることを特徴とする請求項1に記載の照明装置。
- 前記第1のプリズムアレイの高さは、前記第2のプリズムアレイの高さ及び前記第3のプリズムアレイの高さよりも大きいことを特徴とする請求項7に記載の照明装置。
- 前記第1のプリズムアレイのピッチは、前記第2のプリズムアレイのピッチよりも大きいことを特徴とする請求項7に記載の照明装置。
- 前記第1のプリズムアレイのピッチは、前記第3のプリズムアレイのピッチよりも大きいことを特徴とする請求項7に記載の照明装置。
- 前記プリズムシートの上には、第1の方向に延在し、第2の方向に配列した複数のレンズを有する、外形が円形である第1の液晶レンズが配置していることを特徴とする請求項1に記載の照明装置。
- 前記第1の液晶レンズの上には、前記第2の方向に延在し、前記第1の方向に配列した複数のレンズを有する、外形が円形である第2の液晶レンズが配置していることを特徴とする請求項11に記載の照明装置。
- 前記第1の液晶レンズ及び前記第2の液晶レンズにおける液晶分子の初期配向はホモジニアス配向であることを特徴とする請求項11又は12に記載の照明装置。
- 前記プリズムシートの上には、同心円状に複数のレンズを有する、外形が円形である液晶レンズが配置しており、
前記液晶レンズにおける液晶分子の初期配向は、ホメオトロピックであることを特徴とする請求項1に記載の照明装置。 - 前記プリズムシートの上には、外形が円形で、第1の基板と第2の基板の間に液晶層が挟持された液晶レンズが配置し、
前記第1の基板には、同心円状の複数の第1の電極が形成され、
前記第2の基板には、平面状に形成された円形の電極が形成され、
前記液晶レンズは、前記複数の第1の電極に互いに異なる電圧を印加することによってレンズ作用を発現し、
前記液晶層における液晶分子の初期配向はホメオトロピックであることを特徴とする請求項1に記載の照明装置。 - 前記液晶層に形成されたレンズの屈折率は、前記液晶レンズの端部において最も小さく、前記液晶レンズの中央部において最も大きいことを特徴とする請求項15に記載の照明装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020070754A JP7450445B2 (ja) | 2020-04-10 | 2020-04-10 | 照明装置 |
US17/218,613 US11294223B2 (en) | 2020-04-10 | 2021-03-31 | Lighting device |
CN202110381056.6A CN113531487B (zh) | 2020-04-10 | 2021-04-09 | 照明装置 |
US17/683,619 US11537001B2 (en) | 2020-04-10 | 2022-03-01 | Lighting device |
US18/070,820 US11747670B2 (en) | 2020-04-10 | 2022-11-29 | Lighting device |
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JP2020070754A JP7450445B2 (ja) | 2020-04-10 | 2020-04-10 | 照明装置 |
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JP2021168248A true JP2021168248A (ja) | 2021-10-21 |
JP7450445B2 JP7450445B2 (ja) | 2024-03-15 |
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US (3) | US11294223B2 (ja) |
JP (1) | JP7450445B2 (ja) |
CN (1) | CN113531487B (ja) |
Cited By (1)
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WO2023203917A1 (ja) * | 2022-04-19 | 2023-10-26 | 株式会社ジャパンディスプレイ | 調光装置 |
Families Citing this family (2)
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JP7408777B2 (ja) * | 2020-04-03 | 2024-01-05 | 株式会社ジャパンディスプレイ | 照明装置 |
JP2023044236A (ja) * | 2021-09-17 | 2023-03-30 | 株式会社ジャパンディスプレイ | 照明装置 |
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JP2007048489A (ja) * | 2005-08-05 | 2007-02-22 | Citizen Electronics Co Ltd | バックライト装置 |
JP2010008837A (ja) * | 2008-06-30 | 2010-01-14 | Hitachi Displays Ltd | 液晶表示装置 |
JP2010108919A (ja) * | 2008-10-01 | 2010-05-13 | Mitsubishi Electric Corp | 面状光源装置およびこれを用いた表示装置 |
US20140321153A1 (en) * | 2013-04-26 | 2014-10-30 | Hon Hai Precision Industry Co., Ltd. | Optical element and backlight module incorporating the same |
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2020
- 2020-04-10 JP JP2020070754A patent/JP7450445B2/ja active Active
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2021
- 2021-03-31 US US17/218,613 patent/US11294223B2/en active Active
- 2021-04-09 CN CN202110381056.6A patent/CN113531487B/zh active Active
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2022
- 2022-03-01 US US17/683,619 patent/US11537001B2/en active Active
- 2022-11-29 US US18/070,820 patent/US11747670B2/en active Active
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JP2007048489A (ja) * | 2005-08-05 | 2007-02-22 | Citizen Electronics Co Ltd | バックライト装置 |
JP2010008837A (ja) * | 2008-06-30 | 2010-01-14 | Hitachi Displays Ltd | 液晶表示装置 |
JP2010108919A (ja) * | 2008-10-01 | 2010-05-13 | Mitsubishi Electric Corp | 面状光源装置およびこれを用いた表示装置 |
US20140321153A1 (en) * | 2013-04-26 | 2014-10-30 | Hon Hai Precision Industry Co., Ltd. | Optical element and backlight module incorporating the same |
Cited By (1)
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WO2023203917A1 (ja) * | 2022-04-19 | 2023-10-26 | 株式会社ジャパンディスプレイ | 調光装置 |
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Publication number | Publication date |
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JP7450445B2 (ja) | 2024-03-15 |
US20210318575A1 (en) | 2021-10-14 |
CN113531487B (zh) | 2023-07-07 |
US20220252934A1 (en) | 2022-08-11 |
US11537001B2 (en) | 2022-12-27 |
US11747670B2 (en) | 2023-09-05 |
US11294223B2 (en) | 2022-04-05 |
CN113531487A (zh) | 2021-10-22 |
US20230087920A1 (en) | 2023-03-23 |
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