CN105450895B - 导光单元、使用该导光单元的照明装置和图像读取设备 - Google Patents

导光单元、使用该导光单元的照明装置和图像读取设备 Download PDF

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Publication number
CN105450895B
CN105450895B CN201510615983.4A CN201510615983A CN105450895B CN 105450895 B CN105450895 B CN 105450895B CN 201510615983 A CN201510615983 A CN 201510615983A CN 105450895 B CN105450895 B CN 105450895B
Authority
CN
China
Prior art keywords
light
prism
guiding surface
conducting member
light element
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
CN201510615983.4A
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English (en)
Chinese (zh)
Other versions
CN105450895A (zh
Inventor
伊藤稔允
杉山孝幸
光武郁太郎
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Publication of CN105450895A publication Critical patent/CN105450895A/zh
Application granted granted Critical
Publication of CN105450895B publication Critical patent/CN105450895B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • H04N1/0284—Using a single or a few point light sources, e.g. a laser diode in combination with a light integrating, concentrating or diffusing cavity
    • 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
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • 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
    • G02B6/0051—Diffusing sheet or layer
    • 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
    • H04N1/024—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
    • H04N1/02885—Means for compensating spatially uneven illumination, e.g. an aperture arrangement
    • H04N1/0289—Light diffusing elements, e.g. plates or filters
    • 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
    • H04N1/02895—Additional elements in the illumination means or cooperating with the illumination means, e.g. filters

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Image Input (AREA)
  • Facsimile Heads (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Planar Illumination Modules (AREA)
CN201510615983.4A 2014-09-24 2015-09-24 导光单元、使用该导光单元的照明装置和图像读取设备 Active CN105450895B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-193351 2014-09-24
JP2014193351A JP6391387B2 (ja) 2014-09-24 2014-09-24 導光ユニット及びそれを用いた照明装置、画像読取装置

Publications (2)

Publication Number Publication Date
CN105450895A CN105450895A (zh) 2016-03-30
CN105450895B true CN105450895B (zh) 2018-09-28

Family

ID=55525599

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510615983.4A Active CN105450895B (zh) 2014-09-24 2015-09-24 导光单元、使用该导光单元的照明装置和图像读取设备

Country Status (3)

Country Link
US (1) US9348083B2 (enExample)
JP (1) JP6391387B2 (enExample)
CN (1) CN105450895B (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016171366A (ja) * 2015-03-11 2016-09-23 キヤノン株式会社 画像読取装置
WO2016156562A1 (en) * 2015-04-02 2016-10-06 Philips Lighting Holding B.V. Lighting system using a light guide and a lighting method
DE102016118884A1 (de) * 2016-10-05 2018-04-05 Temicon Gmbh Lichtumlenkvorrichtung, Beleuchtungseinrichtung und Verwendung
JP6689405B2 (ja) * 2016-12-02 2020-04-28 三菱電機株式会社 冷蔵庫

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1750585A (zh) * 2004-09-15 2006-03-22 日本板硝子株式会社 棒状导光体、照明单元及图像读取装置
JP2009037746A (ja) * 2007-07-31 2009-02-19 Ushio Inc 線状光源装置および画像読取装置
JP2011071696A (ja) * 2009-09-25 2011-04-07 Mitsubishi Electric Corp 照明装置および画像読取装置

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Publication number Priority date Publication date Assignee Title
JP3362900B2 (ja) * 1993-03-09 2003-01-07 富士通株式会社 面発光装置
DE69735732T2 (de) 1996-09-24 2006-09-21 Seiko Epson Corp. Beleuchtungsvorrichtung und diese verwendende Anzeigevorrichtung
US6494586B1 (en) * 2001-07-10 2002-12-17 Umax Data Systems Inc. Back-light module with improved light projecting assembly for image scanning device
JP3919750B2 (ja) * 2004-01-21 2007-05-30 キヤノン株式会社 画像読取装置及びそれを用いた画像形成装置
JP4728688B2 (ja) * 2004-10-13 2011-07-20 Ｎｅｃ液晶テクノロジー株式会社 光源装置、表示装置、端末装置及び光ユニット
KR100937292B1 (ko) * 2005-10-17 2010-01-18 미츠비시 레이온 가부시키가이샤 프리즘 시트 및 그 제조 방법 및 면 광원 장치
JPWO2008013234A1 (ja) 2006-07-27 2009-12-17 キヤノン・コンポーネンツ株式会社 ライン状照明装置、イメージセンサ及びそれを用いた画像読取装置
US8011802B2 (en) * 2007-07-24 2011-09-06 Sony Corporation Optical film, lighting device and display unit
JP5336880B2 (ja) * 2009-02-24 2013-11-06 日東光学株式会社 発光装置
KR101331907B1 (ko) * 2009-08-28 2013-11-22 엘지디스플레이 주식회사 백라이트장치 및 이를 구비한 액정표시장치
JP5830442B2 (ja) * 2012-06-26 2015-12-09 京セラドキュメントソリューションズ株式会社 導光体、照明装置、これを用いた画像形成装置
WO2014050651A1 (ja) * 2012-09-25 2014-04-03 シャープ株式会社 光学部材、照明装置、及び表示装置
JP2014232982A (ja) 2013-05-29 2014-12-11 ウシオ電機株式会社 読取装置用線状光源装置
KR20150026044A (ko) * 2013-08-30 2015-03-11 엘지디스플레이 주식회사 광학 시트, 이를 포함하는 백라이트 유닛 및 표시장치
JP2015125921A (ja) * 2013-12-26 2015-07-06 京セラドキュメントソリューションズ株式会社 照明装置及び画像読取装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1750585A (zh) * 2004-09-15 2006-03-22 日本板硝子株式会社 棒状导光体、照明单元及图像读取装置
JP2009037746A (ja) * 2007-07-31 2009-02-19 Ushio Inc 線状光源装置および画像読取装置
JP2011071696A (ja) * 2009-09-25 2011-04-07 Mitsubishi Electric Corp 照明装置および画像読取装置

Also Published As

Publication number Publication date
US9348083B2 (en) 2016-05-24
JP6391387B2 (ja) 2018-09-19
JP2016066847A (ja) 2016-04-28
US20160085016A1 (en) 2016-03-24
CN105450895A (zh) 2016-03-30

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