DE2950931C2 - Vorrichtung zum Scharfeinstellen eines Kameraobjektivs - Google Patents
Vorrichtung zum Scharfeinstellen eines KameraobjektivsInfo
- Publication number
- DE2950931C2 DE2950931C2 DE2950931A DE2950931A DE2950931C2 DE 2950931 C2 DE2950931 C2 DE 2950931C2 DE 2950931 A DE2950931 A DE 2950931A DE 2950931 A DE2950931 A DE 2950931A DE 2950931 C2 DE2950931 C2 DE 2950931C2
- Authority
- DE
- Germany
- Prior art keywords
- lens
- signal
- zone
- distance
- gate
- 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
- 230000002441 reversible effect Effects 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 description 7
- 230000001960 triggered effect Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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)
- Focusing (AREA)
- Lens Barrels (AREA)
- Automatic Focus Adjustment (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/000,276 US4238143A (en) | 1979-01-02 | 1979-01-02 | Autofocus movie camera having pulsed terminal drive means |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2950931A1 DE2950931A1 (de) | 1980-07-17 |
| DE2950931C2 true DE2950931C2 (de) | 1987-01-29 |
Family
ID=21690772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2950931A Expired DE2950931C2 (de) | 1979-01-02 | 1979-12-18 | Vorrichtung zum Scharfeinstellen eines Kameraobjektivs |
Country Status (10)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3828284A1 (de) * | 1987-08-19 | 1989-03-02 | Hitachi Ltd | Fokussiervorrichtung fuer videokamera oder dergleichen |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5886893A (ja) * | 1981-11-16 | 1983-05-24 | Minolta Camera Co Ltd | モ−タ駆動制御装置 |
| JPS5888710A (ja) * | 1981-12-21 | 1983-05-26 | Nippon Kogaku Kk <Nikon> | 自動合焦用撮影レンズ構体 |
| JPS59170807A (ja) * | 1982-12-28 | 1984-09-27 | Kyocera Corp | レンズ駆動モ−タ制御装置 |
| JPH067216B2 (ja) * | 1984-04-04 | 1994-01-26 | キヤノン株式会社 | 自動焦点装置 |
| JPH064331Y2 (ja) * | 1984-12-27 | 1994-02-02 | ミノルタカメラ株式会社 | 自動合焦装置付カメラ |
| US4743931A (en) * | 1985-12-05 | 1988-05-10 | Olympus Optical Company, Ltd. | Apparatus for delivering distance information of camera |
| US4857947A (en) * | 1986-12-08 | 1989-08-15 | Nikon Corporation | Position controlling device in a lens driving apparatus for camera |
| US4878077A (en) * | 1987-09-29 | 1989-10-31 | Olympus Optical Company Ltd. | Motor drive and control apparatus for a camera |
| JPH07107643B2 (ja) * | 1988-02-22 | 1995-11-15 | 本田技研工業株式会社 | Ｎｃ同期制御システム |
| GB2248947B (en) * | 1988-02-22 | 1992-08-05 | Honda Motor Co Ltd | Synchronous operation control system for numerically controlled machine |
| JPH0218601A (ja) * | 1988-07-07 | 1990-01-22 | Mitsubishi Electric Corp | サーボ制御装置 |
| DE102018114388A1 (de) * | 2018-06-15 | 2019-12-19 | Valeo Schalter Und Sensoren Gmbh | Verfahren zur Steuerung einer Antriebseinrichtung eines Mikroschwingspiegels, Steuervorrichtung und Umlenkspiegeleinrichtung |
Family Cites Families (10)
| 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 |
| 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 |
| JPS563564B2 (US07494231-20090224-C00006.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 |
| CA1099554A (en) * | 1976-10-04 | 1981-04-21 | Polaroid Corporation | Automatic range finding and focussing camera |
| CA1120578A (en) * | 1976-10-04 | 1982-03-23 | Juerg Muggli | Ultrasonic ranging system for a camera |
-
1979
- 1979-01-02 US US06/000,276 patent/US4238143A/en not_active Ceased
- 1979-12-06 AU AU53527/79A patent/AU538871B2/en not_active Ceased
- 1979-12-07 GB GB7942274A patent/GB2040504B/en not_active Expired
- 1979-12-17 CH CH11165/79A patent/CH654673A5/de not_active IP Right Cessation
- 1979-12-18 DE DE2950931A patent/DE2950931C2/de not_active Expired
- 1979-12-20 AT AT0804279A patent/AT365789B/de not_active IP Right Cessation
- 1979-12-21 IT IT28297/79A patent/IT1165410B/it active
- 1979-12-28 JP JP54173949A patent/JPS5921001B2/ja not_active Expired
-
1980
- 1980-01-02 FR FR8000012A patent/FR2445974B1/fr not_active Expired
- 1980-01-02 CA CA342,928A patent/CA1133304A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3828284A1 (de) * | 1987-08-19 | 1989-03-02 | Hitachi Ltd | Fokussiervorrichtung fuer videokamera oder dergleichen |
| DE3828284C2 (de) * | 1987-08-19 | 2000-09-28 | Hitachi Ltd | Fokussiervorrichtung für eine Kamera und ein Verfahren zum Betreiben dieser Vorrichtung |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5921001B2 (ja) | 1984-05-17 |
| US4238143A (en) | 1980-12-09 |
| FR2445974A1 (fr) | 1980-08-01 |
| IT7928297A0 (it) | 1979-12-21 |
| FR2445974B1 (fr) | 1985-11-15 |
| DE2950931A1 (de) | 1980-07-17 |
| CA1133304A (en) | 1982-10-12 |
| CH654673A5 (de) | 1986-02-28 |
| AU538871B2 (en) | 1984-08-30 |
| JPS5598724A (en) | 1980-07-28 |
| AT365789B (de) | 1982-02-10 |
| GB2040504A (en) | 1980-08-28 |
| AU5352779A (en) | 1980-07-10 |
| GB2040504B (en) | 1982-07-28 |
| IT1165410B (it) | 1987-04-22 |
| ATA804279A (de) | 1981-06-15 |
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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 |
|
| 8125 | Change of the main classification |
Ipc: G03B 3/10 |
|
| Q161 | Has additional application no. |
Ref document number: 2950932 Country of ref document: DE |
|
| AG | Has addition no. |
Ref country code: DE Ref document number: 2950932 Format of ref document f/p: P |
|
| D2 | Grant after examination | ||
| AG | Has addition no. |
Ref country code: DE Ref document number: 2950932 Format of ref document f/p: P |
|
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |