DE69722072D1 - Steuervorrichtung für lichtemittierende Elemente - Google Patents

Steuervorrichtung für lichtemittierende Elemente

Info

Publication number
DE69722072D1
DE69722072D1 DE69722072T DE69722072T DE69722072D1 DE 69722072 D1 DE69722072 D1 DE 69722072D1 DE 69722072 T DE69722072 T DE 69722072T DE 69722072 T DE69722072 T DE 69722072T DE 69722072 D1 DE69722072 D1 DE 69722072D1
Authority
DE
Germany
Prior art keywords
light emitting
control device
emitting elements
elements
light
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.)
Expired - Lifetime
Application number
DE69722072T
Other languages
English (en)
Other versions
DE69722072T2 (de
Inventor
Hideo Taniguchi
Akihiko Taniguchi
Tamaki Mashiba
Masanori Mori
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Application granted granted Critical
Publication of DE69722072D1 publication Critical patent/DE69722072D1/de
Publication of DE69722072T2 publication Critical patent/DE69722072T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/045—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas
    • G03G15/047—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas for discharging non-image areas
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/12—Controlling the intensity of the light using optical feedback
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/04—Arrangements for exposing and producing an image
    • G03G2215/0429—Changing or enhancing the image
    • G03G2215/0431—Producing a clean non-image area, i.e. avoiding show-around effects
    • G03G2215/0448—Charge-erasing means for the non-image area
    • G03G2215/0451—Light-emitting array or panel
    • G03G2215/0453—Light-emitting diodes, i.e. LED-array

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Devices (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Facsimile Scanning Arrangements (AREA)
DE69722072T 1996-03-25 1997-03-20 Steuervorrichtung für lichtemittierende Elemente Expired - Lifetime DE69722072T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6877896 1996-03-25
JP6877896A JP3599883B2 (ja) 1996-03-25 1996-03-25 発光素子の制御装置及び光学センサの制御装置並びにブランクランプの制御装置

Publications (2)

Publication Number Publication Date
DE69722072D1 true DE69722072D1 (de) 2003-06-26
DE69722072T2 DE69722072T2 (de) 2004-04-01

Family

ID=13383542

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69722072T Expired - Lifetime DE69722072T2 (de) 1996-03-25 1997-03-20 Steuervorrichtung für lichtemittierende Elemente

Country Status (4)

Country Link
US (1) US5884125A (de)
EP (1) EP0802460B1 (de)
JP (1) JP3599883B2 (de)
DE (1) DE69722072T2 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6266000B1 (en) * 1999-04-30 2001-07-24 Agilent Technologies, Inc. Programmable LED driver pad
DE60030516T2 (de) * 1999-08-19 2007-06-06 Schott Ag Vorrichtung zur Beleuchtungssteuerung
US6329647B1 (en) 2000-07-03 2001-12-11 Peter J. Mikan Compensation reference circuit for opto-mechanical joystick
JP4408025B2 (ja) * 2003-04-24 2010-02-03 株式会社リコー 位置ずれパターン検出装置、光書込み装置、画像形成装置及び複写機
US20070216756A1 (en) * 2006-03-15 2007-09-20 Kabushiki Kaisha Toshiba Laser beam scanning apparatus, image forming apparatus, and laser beam scanning method
KR101409625B1 (ko) * 2008-06-18 2014-06-19 엘지디스플레이 주식회사 백라이트 유닛과 이를 이용한 액정표시장치
CN102426825B (zh) * 2011-10-12 2014-01-08 深圳市华星光电技术有限公司 一种pwm电压调节电路及其调节方法、液晶显示装置
US20140015491A1 (en) * 2012-07-10 2014-01-16 GM Global Technology Operations LLC Internally referenced scalable auto discharge method for hybrid electric vehicles
US10288235B1 (en) 2017-03-03 2019-05-14 Willis Electric Co., Ltd. Refractive decorative lighting string
US10728970B2 (en) * 2018-04-27 2020-07-28 Blooming International Limited Driving circuit apparatus for automatically detecting optimized driving voltage of light string
CN110958731A (zh) 2018-09-21 2020-04-03 鸿盛国际有限公司 发光二极管并联电路
CN111465133A (zh) 2019-01-21 2020-07-28 鸿盛国际有限公司 可分组控制的发光二极管并联电路

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01167139A (ja) * 1987-12-23 1989-06-30 Brother Ind Ltd 光学センサーの制御装置
JPH0830917B2 (ja) * 1990-04-18 1996-03-27 シャープ株式会社 複写装置
JPH04271025A (ja) * 1991-02-26 1992-09-28 Olympus Optical Co Ltd レーザ光源用のａｐｃ回路
JPH05204231A (ja) * 1992-01-27 1993-08-13 Toshiba Corp 画像形成装置
JP2797229B2 (ja) * 1992-03-24 1998-09-17 富士通電装株式会社 光送信装置

Also Published As

Publication number Publication date
JP3599883B2 (ja) 2004-12-08
EP0802460A3 (de) 2001-05-30
EP0802460A2 (de) 1997-10-22
JPH09261411A (ja) 1997-10-03
EP0802460B1 (de) 2003-05-21
DE69722072T2 (de) 2004-04-01
US5884125A (en) 1999-03-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition