DE3019908C2 - - Google Patents

Info

Publication number
DE3019908C2
DE3019908C2 DE3019908A DE3019908A DE3019908C2 DE 3019908 C2 DE3019908 C2 DE 3019908C2 DE 3019908 A DE3019908 A DE 3019908A DE 3019908 A DE3019908 A DE 3019908A DE 3019908 C2 DE3019908 C2 DE 3019908C2
Authority
DE
Germany
Prior art keywords
signal
value
circuit
output
integration
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
Application number
DE3019908A
Other languages
German (de)
English (en)
Other versions
DE3019908A1 (de
Inventor
Takashi Kamakura Kanagawa Jp Kawabata
Kazuya Machida Tokio/Tokyo Jp Hosoe
Nobuhiko Shinoda
Shinji Sakai
Takao Tokio/Tokyo Jp Kinoshita
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
Priority claimed from JP6338079A external-priority patent/JPS55155311A/ja
Priority claimed from JP6337979A external-priority patent/JPS55155310A/ja
Priority claimed from JP6337879A external-priority patent/JPS55155309A/ja
Priority claimed from JP6337779A external-priority patent/JPS55154882A/ja
Priority claimed from JP6338179A external-priority patent/JPS55154877A/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of DE3019908A1 publication Critical patent/DE3019908A1/de
Application granted granted Critical
Publication of DE3019908C2 publication Critical patent/DE3019908C2/de
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
DE19803019908 1979-05-23 1980-05-23 System zur ermittlung der abbildungsschaerfe eines bildes Granted DE3019908A1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP6338079A JPS55155311A (en) 1979-05-23 1979-05-23 Imaging state detecting system of image
JP6337979A JPS55155310A (en) 1979-05-23 1979-05-23 Signal processing system for imaging state detection of image
JP6337879A JPS55155309A (en) 1979-05-23 1979-05-23 Image definition detector
JP6337779A JPS55154882A (en) 1979-05-23 1979-05-23 Image scan system
JP6338179A JPS55154877A (en) 1979-05-23 1979-05-23 Picture signal processing system

Publications (2)

Publication Number Publication Date
DE3019908A1 DE3019908A1 (de) 1980-11-27
DE3019908C2 true DE3019908C2 (US06650917-20031118-M00005.png) 1989-06-22

Family

ID=27523774

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19803019908 Granted DE3019908A1 (de) 1979-05-23 1980-05-23 System zur ermittlung der abbildungsschaerfe eines bildes

Country Status (2)

Country Link
US (1) US4377742A (US06650917-20031118-M00005.png)
DE (1) DE3019908A1 (US06650917-20031118-M00005.png)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5772113A (en) * 1980-10-23 1982-05-06 Canon Inc Signal processing system
JPS587984A (ja) * 1981-07-08 1983-01-17 Canon Inc 信号蓄積型光電変換素子の信号蓄積時間制御方式
JPS5817504A (ja) * 1981-07-22 1983-02-01 Olympus Optical Co Ltd 情報記録再生装置
US4635126A (en) * 1981-12-18 1987-01-06 Canon Kabushiki Kaisha Image pick-up system
JPS60235110A (ja) * 1984-05-07 1985-11-21 Minolta Camera Co Ltd 焦点検出装置の温度補償装置
US4736434A (en) * 1987-01-12 1988-04-05 Rca Corporation MOSFET analog signal squaring circuit
DE3842525A1 (de) * 1988-12-17 1990-06-21 Philips Patentverwaltung Verfahren zur erzeugung einer roentgenaufnahme mittels eines photoleiters und anordnung zur durchfuehrung des verfahrens
JP3477742B2 (ja) * 1993-06-18 2003-12-10 株式会社ニコン イメージセンサー
US5838176A (en) * 1996-07-11 1998-11-17 Foveonics, Inc. Correlated double sampling circuit
JP3757595B2 (ja) * 1998-01-19 2006-03-22 コニカミノルタビジネステクノロジーズ株式会社 画像読取装置
JP3812126B2 (ja) * 1998-02-26 2006-08-23 セイコーエプソン株式会社 画像表示装置
KR100683519B1 (ko) * 1999-12-23 2007-02-15 엘지.필립스 엘시디 주식회사 액정 패널의 충전 특성 보상회로 및 충전 특성 보상방법
WO2002027763A2 (en) 2000-09-25 2002-04-04 Foveon, Inc. Active pixel sensor with noise cancellation
US7138970B2 (en) * 2002-12-09 2006-11-21 Lockheed Martin Corporation Method of LED life extension and end-of-life prediction
US6871018B2 (en) * 2003-02-18 2005-03-22 Pentax Corporation Focus detection device
JP3840200B2 (ja) * 2003-05-12 2006-11-01 キヤノン株式会社 情報処理装置、保守管理方法、プログラム及び記憶媒体
TWI380260B (en) * 2007-12-06 2012-12-21 Au Optronics Corp Ambient light detection system and related method
CN111122126B (zh) * 2019-12-31 2022-03-22 北京灵犀微光科技有限公司 光学系统清晰度测试方法和装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5721904B2 (US06650917-20031118-M00005.png) * 1973-10-03 1982-05-10
US4047187A (en) * 1974-04-01 1977-09-06 Canon Kabushiki Kaisha System for exposure measurement and/or focus detection by means of image senser
US4083056A (en) * 1975-09-09 1978-04-04 Asahi Kogaku Kogyo Kabushiki Kaisha Focus detecting device for single-lens reflex cameras
JPS5914723B2 (ja) * 1976-05-22 1984-04-05 旭光学工業株式会社 一眼レフカメラの焦点検出装置
JPS5374424A (en) * 1976-12-15 1978-07-01 Asahi Optical Co Ltd Photoelectric detection device suited for detecting focal point
JPS53116852A (en) * 1977-03-23 1978-10-12 Olympus Optical Co Ltd Automatic focus adjusting system
JPS6044649B2 (ja) * 1977-05-20 1985-10-04 旭光学工業株式会社 一眼レフレツクスカメラの焦点検出装置

Also Published As

Publication number Publication date
DE3019908A1 (de) 1980-11-27
US4377742A (en) 1983-03-22

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8125 Change of the main classification

Ipc: G02B 7/11

D2 Grant after examination
8364 No opposition during term of opposition