CA1133305A - Auto focus movie camera having improved focus response - Google Patents
Auto focus movie camera having improved focus responseInfo
- Publication number
- CA1133305A CA1133305A CA342,929A CA342929A CA1133305A CA 1133305 A CA1133305 A CA 1133305A CA 342929 A CA342929 A CA 342929A CA 1133305 A CA1133305 A CA 1133305A
- Authority
- CA
- Canada
- Prior art keywords
- lens
- focus
- zone
- adjacent
- control means
- 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
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
- G02B7/40—Systems for automatic generation of focusing signals using time delay of the reflected waves, e.g. of ultrasonic waves
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/000,277 US4239354A (en) | 1979-01-02 | 1979-01-02 | Autofocus movie camera having improved focus response |
US277 | 1979-01-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1133305A true CA1133305A (en) | 1982-10-12 |
Family
ID=21690777
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA342,929A Expired CA1133305A (en) | 1979-01-02 | 1980-01-02 | Auto focus movie camera having improved focus response |
Country Status (10)
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE31362E (en) * | 1979-01-02 | 1983-08-30 | Polaroid Corporation | Autofocus movie camera having pulsed terminal drive means |
DE2928142A1 (de) * | 1979-07-12 | 1981-01-29 | Agfa Gevaert Ag | Regelschaltung fuer abgleichvorgaenge bei fotografischen geraeten |
US4344024A (en) * | 1979-07-12 | 1982-08-10 | Agfa-Gevaert Ag | Digital control system for automatic-focus cameras |
JPS57169710A (en) * | 1981-04-10 | 1982-10-19 | West Electric Co Ltd | Automatic focusing device |
JPS5818611A (ja) * | 1981-07-28 | 1983-02-03 | Nippon Kogaku Kk <Nikon> | 自動焦点調節装置 |
JPS5886893A (ja) * | 1981-11-16 | 1983-05-24 | Minolta Camera Co Ltd | モ−タ駆動制御装置 |
JPS5961806A (ja) * | 1982-10-01 | 1984-04-09 | Asahi Optical Co Ltd | ビデオカメラのオ−トフオ−カス装置 |
JPS5964816A (ja) * | 1982-10-05 | 1984-04-12 | Olympus Optical Co Ltd | レンズ鏡筒 |
JPS59107310A (ja) * | 1982-12-13 | 1984-06-21 | Matsushita Electric Ind Co Ltd | ズ−ム倍率検出装置 |
JPS59170807A (ja) * | 1982-12-28 | 1984-09-27 | Kyocera Corp | レンズ駆動モ−タ制御装置 |
DE3301063A1 (de) * | 1983-01-14 | 1984-07-19 | Kodak Ag, 7000 Stuttgart | Stellantrieb fuer ein photographisches objektiv |
JPS604934A (ja) * | 1983-06-23 | 1985-01-11 | Tokinaa Kogaku Kk | 変倍複写装置用レンズ系の設定位置停止装置 |
US4849779A (en) * | 1984-11-14 | 1989-07-18 | Minolta Camera Kabushiki Kaisha | Moving driving device of camera |
US4743931A (en) * | 1985-12-05 | 1988-05-10 | Olympus Optical Company, Ltd. | Apparatus for delivering distance information of camera |
US5239331A (en) * | 1985-12-11 | 1993-08-24 | Canon Kabushiki Kaisha | Brake device for motor in camera |
EP0359240B1 (en) * | 1988-09-13 | 1995-07-19 | Asahi Kogaku Kogyo Kabushiki Kaisha | Single-lens reflex camera system |
JPH0727450Y2 (ja) * | 1988-10-04 | 1995-06-21 | 旭光学工業株式会社 | ズームレンズカメラの開放f値検出装置 |
DE4113764C2 (de) * | 1990-04-26 | 2000-04-06 | Asahi Optical Co Ltd | Kamerasystem |
US5450156A (en) * | 1991-05-21 | 1995-09-12 | Asahi Kogaku Kogyo Kabushiki Kaisha | Power zoom lens and camera having same |
US5396306A (en) * | 1991-05-21 | 1995-03-07 | Asahi Kogaku Kogyo Kabushiki Kaisha | Power lens and camera system |
GB2256941B (en) * | 1991-05-21 | 1994-08-03 | Asahi Optical Co Ltd | Power lens and camera system |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3370289A (en) * | 1965-02-26 | 1968-02-20 | Collins Radio Co | Digital-to-analog converter system |
CA902167A (en) * | 1967-09-22 | 1972-06-06 | Fairchild Camera And Instrument Corporation | Stepper motor control system |
US3522764A (en) * | 1968-03-25 | 1970-08-04 | Polaroid Corp | Rangefinding and focusing system for photographic cameras and the like |
US3949287A (en) * | 1971-05-28 | 1976-04-06 | Agfa-Gevaert, A.G. | Position-control servo system with speed-dependent damping action |
US3760252A (en) * | 1972-07-05 | 1973-09-18 | Burroughs Corp | Damping of a step servo motor using one step anticipation logic |
FR2220800A1 (US20110009641A1-20110113-C00116.png) * | 1973-03-06 | 1974-10-04 | Canon Kk | |
JPS563564B2 (US20110009641A1-20110113-C00116.png) * | 1973-09-06 | 1981-01-26 | ||
US4114079A (en) * | 1973-10-04 | 1978-09-12 | Ichiro Miyakita | Rotary cutter drive control with electric motor |
DE2460675C3 (de) * | 1974-12-20 | 1981-06-11 | Agfa-Gevaert Ag, 5090 Leverkusen | Kinematografische Kamera |
US4002405A (en) * | 1975-04-03 | 1977-01-11 | Curt Stahl | Variable speed control for zooming |
DE2522757A1 (de) * | 1975-05-22 | 1976-12-09 | Walter Landsrath | Automatischer entfernungsmesser fuer optische systeme |
CA1120578A (en) * | 1976-10-04 | 1982-03-23 | Juerg Muggli | Ultrasonic ranging system for a camera |
CA1099554A (en) * | 1976-10-04 | 1981-04-21 | Polaroid Corporation | Automatic range finding and focussing camera |
-
1979
- 1979-01-02 US US06/000,277 patent/US4239354A/en not_active Expired - Lifetime
- 1979-12-06 AU AU53528/79A patent/AU531342B2/en not_active Ceased
- 1979-12-07 GB GB7942275A patent/GB2039681B/en not_active Expired
- 1979-12-17 CH CH11166/79A patent/CH654674A5/de not_active IP Right Cessation
- 1979-12-18 DE DE19792950932 patent/DE2950932A1/de active Granted
- 1979-12-20 AT AT0804379A patent/AT370529B/de not_active IP Right Cessation
- 1979-12-21 IT IT28300/79A patent/IT1165412B/it active
- 1979-12-28 JP JP54173950A patent/JPS5921002B2/ja not_active Expired
-
1980
- 1980-01-02 CA CA342,929A patent/CA1133305A/en not_active Expired
- 1980-01-02 FR FR8000011A patent/FR2445973B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5921002B2 (ja) | 1984-05-17 |
DE2950932A1 (de) | 1980-07-17 |
FR2445973B1 (fr) | 1985-11-08 |
AU531342B2 (en) | 1983-08-18 |
GB2039681B (en) | 1982-09-08 |
JPS55100532A (en) | 1980-07-31 |
IT7928300A0 (it) | 1979-12-21 |
GB2039681A (en) | 1980-08-13 |
FR2445973A1 (fr) | 1980-08-01 |
DE2950932C2 (US20110009641A1-20110113-C00116.png) | 1987-06-04 |
ATA804379A (de) | 1982-08-15 |
IT1165412B (it) | 1987-04-22 |
US4239354A (en) | 1980-12-16 |
AU5352879A (en) | 1980-07-10 |
AT370529B (de) | 1983-04-11 |
CH654674A5 (de) | 1986-02-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |