JP7561012B2 - 撮像装置及び画像読取装置 - Google Patents

撮像装置及び画像読取装置 Download PDF

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Publication number
JP7561012B2
JP7561012B2 JP2020195083A JP2020195083A JP7561012B2 JP 7561012 B2 JP7561012 B2 JP 7561012B2 JP 2020195083 A JP2020195083 A JP 2020195083A JP 2020195083 A JP2020195083 A JP 2020195083A JP 7561012 B2 JP7561012 B2 JP 7561012B2
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JP
Japan
Prior art keywords
light
medium
face
imaging
source unit
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
JP2020195083A
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English (en)
Japanese (ja)
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JP2022083649A (ja
JP2022083649A5 (https=
Inventor
瑛輝 山田
憲吾 中野
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.)
PFU Ltd
Original Assignee
PFU Ltd
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 PFU Ltd filed Critical PFU Ltd
Priority to JP2020195083A priority Critical patent/JP7561012B2/ja
Priority to US17/473,582 priority patent/US11729332B2/en
Publication of JP2022083649A publication Critical patent/JP2022083649A/ja
Publication of JP2022083649A5 publication Critical patent/JP2022083649A5/ja
Application granted granted Critical
Publication of JP7561012B2 publication Critical patent/JP7561012B2/ja
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Anticipated expiration legal-status Critical

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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
    • G02B6/0005—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 of the fibre type
    • G02B6/001—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 of the fibre type the light being emitted along at least a portion of the lateral surface of the fibre
    • 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
    • H04N1/02825—Using a single or a few point light sources, e.g. a laser diode in combination with at least one reflector which is fixed in relation to the light source
    • 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
    • H04N1/12—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using the sheet-feed movement or the medium-advance or the drum-rotation movement as the slow scanning component, e.g. arrangements for the main-scanning
    • H04N1/121—Feeding arrangements
    • H04N1/1215—Feeding using one or more cylindrical platens or rollers in the immediate vicinity of the main scanning line
    • 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
    • H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H04N1/195—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a two-dimensional [2D] array
    • 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
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide

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 Sources And Details Of Projection-Printing Devices (AREA)
  • Image Input (AREA)
JP2020195083A 2020-11-25 2020-11-25 撮像装置及び画像読取装置 Active JP7561012B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2020195083A JP7561012B2 (ja) 2020-11-25 2020-11-25 撮像装置及び画像読取装置
US17/473,582 US11729332B2 (en) 2020-11-25 2021-09-13 Light source unit in which surface opposite to light emitting element of light guide is not covered and medium side surface of reflector protrudes from light guide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020195083A JP7561012B2 (ja) 2020-11-25 2020-11-25 撮像装置及び画像読取装置

Publications (3)

Publication Number Publication Date
JP2022083649A JP2022083649A (ja) 2022-06-06
JP2022083649A5 JP2022083649A5 (https=) 2023-09-07
JP7561012B2 true JP7561012B2 (ja) 2024-10-03

Family

ID=81657618

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020195083A Active JP7561012B2 (ja) 2020-11-25 2020-11-25 撮像装置及び画像読取装置

Country Status (2)

Country Link
US (1) US11729332B2 (https=)
JP (1) JP7561012B2 (https=)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016035885A (ja) 2014-08-05 2016-03-17 ウシオ電機株式会社 線状光源装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3792807B2 (ja) 1996-11-18 2006-07-05 松下電器産業株式会社 線状照明装置
EP0863422B1 (en) 1997-03-04 2006-10-04 Matsushita Electric Industrial Co., Ltd. Linear beam irradiator
JP3987838B2 (ja) 1997-03-04 2007-10-10 松下電器産業株式会社 線状照明装置
JPH1184544A (ja) * 1997-09-04 1999-03-26 Micro Opt:Kk ライン照明装置
JP2009302646A (ja) * 2008-06-10 2009-12-24 Nippon Sheet Glass Co Ltd 棒状導光体および画像読取装置
JP6560935B2 (ja) * 2015-08-28 2019-08-14 キヤノン・コンポーネンツ株式会社 照明装置、イメージセンサユニット、画像読取装置、画像形成装置および紙葉類識別装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016035885A (ja) 2014-08-05 2016-03-17 ウシオ電機株式会社 線状光源装置

Also Published As

Publication number Publication date
US11729332B2 (en) 2023-08-15
US20220166897A1 (en) 2022-05-26
JP2022083649A (ja) 2022-06-06

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