JP7341319B2 - 照明装置及びイメージスキャナ - Google Patents

照明装置及びイメージスキャナ Download PDF

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Publication number
JP7341319B2
JP7341319B2 JP2022511479A JP2022511479A JP7341319B2 JP 7341319 B2 JP7341319 B2 JP 7341319B2 JP 2022511479 A JP2022511479 A JP 2022511479A JP 2022511479 A JP2022511479 A JP 2022511479A JP 7341319 B2 JP7341319 B2 JP 7341319B2
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JP
Japan
Prior art keywords
light
curved surface
light source
incident
light guide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2022511479A
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English (en)
Japanese (ja)
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JPWO2021199422A5 (https=
JPWO2021199422A1 (https=
Inventor
泰介 牧田
裕之 河野
秀 多久島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of JPWO2021199422A1 publication Critical patent/JPWO2021199422A1/ja
Publication of JPWO2021199422A5 publication Critical patent/JPWO2021199422A5/ja
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Publication of JP7341319B2 publication Critical patent/JP7341319B2/ja
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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
    • H04N1/0282—Using a single or a few point light sources, e.g. a laser diode
    • H04N1/02835—Using a single or a few point light sources, e.g. a laser diode in combination with a light guide, e.g. optical fibre, glass plate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Facsimile Heads (AREA)
  • Planar Illumination Modules (AREA)
JP2022511479A 2020-04-03 2020-04-03 照明装置及びイメージスキャナ Active JP7341319B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/015302 WO2021199422A1 (ja) 2020-04-03 2020-04-03 照明装置及びイメージスキャナ

Publications (3)

Publication Number Publication Date
JPWO2021199422A1 JPWO2021199422A1 (https=) 2021-10-07
JPWO2021199422A5 JPWO2021199422A5 (https=) 2022-06-21
JP7341319B2 true JP7341319B2 (ja) 2023-09-08

Family

ID=77929956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2022511479A Active JP7341319B2 (ja) 2020-04-03 2020-04-03 照明装置及びイメージスキャナ

Country Status (5)

Country Link
US (1) US12248165B2 (https=)
JP (1) JP7341319B2 (https=)
CN (1) CN115336241B (https=)
DE (1) DE112020007020T5 (https=)
WO (1) WO2021199422A1 (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7682760B2 (ja) * 2021-10-13 2025-05-26 株式会社ジャパンディスプレイ 照明装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008270885A (ja) 2007-04-16 2008-11-06 Matsushita Electric Ind Co Ltd 照明装置およびこれを用いた原稿読取り装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08101654A (ja) 1994-09-29 1996-04-16 Toshiba Lighting & Technol Corp 照明装置および誘導灯装置
US5839812A (en) * 1995-07-18 1998-11-24 Gl Displays, Inc. Flat parallel light source
JP3453495B2 (ja) * 1996-07-26 2003-10-06 キヤノン株式会社 密着型イメージセンサ及び画像読取装置
US6496285B1 (en) 1998-02-25 2002-12-17 Rohm Co., Ltd. Image reading apparatus
JPH11313195A (ja) * 1998-02-25 1999-11-09 Rohm Co Ltd 画像読み取り装置
JP4667037B2 (ja) * 2002-06-21 2011-04-06 ウェイヴィーン・インコーポレイテッド マルチランプ照明システム
TW201030284A (en) * 2008-10-30 2010-08-16 Zeon Corp Light source device and liquid cristal display device
US8488216B2 (en) * 2009-02-20 2013-07-16 Nisca Corporation LED light source and image reading apparatus
JP2010193360A (ja) 2009-02-20 2010-09-02 Nisca Corp Ｌｅｄ光源及び画像読取装置
JP5780087B2 (ja) * 2011-09-28 2015-09-16 日本精機株式会社 照明装置
JP5848419B2 (ja) * 2012-03-30 2016-01-27 キヤノン・コンポーネンツ株式会社 イメージセンサユニット、画像読取装置、画像形成装置
JP2015179571A (ja) 2014-03-18 2015-10-08 株式会社東芝 導光体および照明装置
JP2017228440A (ja) 2016-06-23 2017-12-28 スタンレー電気株式会社 車両用信号灯
CN109239965B (zh) * 2018-09-30 2021-11-23 京东方科技集团股份有限公司 一种显示器件及其控制方法
FR3088736B1 (fr) * 2018-11-15 2020-10-30 Thales Sa Dispositif d'eclairage compatible d'equipement(s) de vision nocturne a fenetre d'injection laterale de lumiere diurne et nocturne

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008270885A (ja) 2007-04-16 2008-11-06 Matsushita Electric Ind Co Ltd 照明装置およびこれを用いた原稿読取り装置

Also Published As

Publication number Publication date
US20230144125A1 (en) 2023-05-11
WO2021199422A1 (ja) 2021-10-07
CN115336241B (zh) 2024-04-09
DE112020007020T5 (de) 2023-04-13
JPWO2021199422A1 (https=) 2021-10-07
CN115336241A (zh) 2022-11-11
US12248165B2 (en) 2025-03-11

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