DE3044416A1 - Fokussiersystem - Google Patents

Fokussiersystem

Info

Publication number
DE3044416A1
DE3044416A1 DE19803044416 DE3044416A DE3044416A1 DE 3044416 A1 DE3044416 A1 DE 3044416A1 DE 19803044416 DE19803044416 DE 19803044416 DE 3044416 A DE3044416 A DE 3044416A DE 3044416 A1 DE3044416 A1 DE 3044416A1
Authority
DE
Germany
Prior art keywords
lens
output signal
characteristic
contrast
value
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.)
Granted
Application number
DE19803044416
Other languages
German (de)
English (en)
Other versions
DE3044416C2 (de
Inventor
Dennis J. Littleton Col. Wilwerding
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.)
Honeywell Inc
Original Assignee
Honeywell 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 Honeywell Inc filed Critical Honeywell Inc
Publication of DE3044416A1 publication Critical patent/DE3044416A1/de
Application granted granted Critical
Publication of DE3044416C2 publication Critical patent/DE3044416C2/de
Expired 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
    • G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)
DE3044416A 1979-11-30 1980-11-26 Automatische Fokussiereinrichtung Expired DE3044416C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/099,235 US4250377A (en) 1979-11-30 1979-11-30 Low contrast bias auto focus system

Publications (2)

Publication Number Publication Date
DE3044416A1 true DE3044416A1 (de) 1981-06-19
DE3044416C2 DE3044416C2 (de) 1987-02-05

Family

ID=22273780

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3044416A Expired DE3044416C2 (de) 1979-11-30 1980-11-26 Automatische Fokussiereinrichtung

Country Status (3)

Country Link
US (1) US4250377A (US20110009641A1-20110113-C00256.png)
JP (1) JPS5688121A (US20110009641A1-20110113-C00256.png)
DE (1) DE3044416C2 (US20110009641A1-20110113-C00256.png)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4358673A (en) * 1980-12-04 1982-11-09 Honeywell Inc. Steered sum low cost auto focus system
US4358675A (en) * 1980-12-05 1982-11-09 Honeywell Inc. Low contrast default for auto focus system
JPS59102204A (ja) * 1982-12-06 1984-06-13 Canon Inc 焦点調節装置
JPS59206808A (ja) * 1983-05-11 1984-11-22 Asahi Optical Co Ltd 焦点検出装置
JPS6036906A (ja) * 1983-08-09 1985-02-26 Konishiroku Photo Ind Co Ltd 光電式距離測定装置
US4710013A (en) * 1985-10-08 1987-12-01 W. Haking Enterprises Limited Automatic focusing mechanism for camera

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2549905B2 (de) * 1974-11-07 1977-10-27 Asahi Kogaku Kogyo K.K, Tokio Vorrichtung zur scharfeinstellung eines objektivs
DE2015899B2 (de) * 1969-04-04 1978-02-23 Eastman Kodak Co, Rochester, N Y (VStA) Kamera mit koordinierter blenden- und entfernungseinstellung
DE2847368A1 (de) * 1977-11-02 1979-05-03 Canon Kk Kamera mit automatischer scharfeinstellvorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5616407B2 (US20110009641A1-20110113-C00256.png) * 1973-10-26 1981-04-16
JPS5280026A (en) * 1975-12-26 1977-07-05 Fuji Photo Film Co Ltd Focus detection means
JPS5319026A (en) * 1976-08-04 1978-02-21 Fuji Photo Film Co Ltd Automatic focusing system
US4085320A (en) * 1976-10-07 1978-04-18 Honeywell Inc. Automatic focus system with loss of correlation inhibit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2015899B2 (de) * 1969-04-04 1978-02-23 Eastman Kodak Co, Rochester, N Y (VStA) Kamera mit koordinierter blenden- und entfernungseinstellung
DE2549905B2 (de) * 1974-11-07 1977-10-27 Asahi Kogaku Kogyo K.K, Tokio Vorrichtung zur scharfeinstellung eines objektivs
DE2847368A1 (de) * 1977-11-02 1979-05-03 Canon Kk Kamera mit automatischer scharfeinstellvorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DE-OS 30 38 712 ältere Anmeldung *

Also Published As

Publication number Publication date
US4250377A (en) 1981-02-10
DE3044416C2 (de) 1987-02-05
JPS5688121A (en) 1981-07-17
JPS648804B2 (US20110009641A1-20110113-C00256.png) 1989-02-15

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Legal Events

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

Ipc: G03B 3/10

D2 Grant after examination
8364 No opposition during term of opposition