JPS6364761B2 - - Google Patents
Info
- Publication number
- JPS6364761B2 JPS6364761B2 JP56028508A JP2850881A JPS6364761B2 JP S6364761 B2 JPS6364761 B2 JP S6364761B2 JP 56028508 A JP56028508 A JP 56028508A JP 2850881 A JP2850881 A JP 2850881A JP S6364761 B2 JPS6364761 B2 JP S6364761B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- focus
- aperture diameter
- distance
- camera
- 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
- 238000005286 illumination Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 15
- 230000010354 integration Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035945 sensitivity Effects 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)
- Automatic Focus Adjustment (AREA)
- Exposure Control For Cameras (AREA)
- Lens Barrels (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12682480A | 1980-03-03 | 1980-03-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56133722A JPS56133722A (en) | 1981-10-20 |
| JPS6364761B2 true JPS6364761B2 (fr) | 1988-12-13 |
Family
ID=22426878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2850881A Granted JPS56133722A (en) | 1980-03-03 | 1981-03-02 | Device for focusing image for photographic camera and method therfor |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS56133722A (fr) |
| CA (1) | CA1151929A (fr) |
| DE (1) | DE3107945A1 (fr) |
| FR (1) | FR2477292A1 (fr) |
| GB (1) | GB2070794B (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3346552A1 (de) * | 1982-12-23 | 1984-06-28 | Konishiroku Photo Industry Co., Ltd., Tokio/Tokyo | Kamera |
| JPH0545057Y2 (fr) * | 1986-03-17 | 1993-11-17 | ||
| GB2196134B (en) * | 1986-09-30 | 1990-12-19 | Canon Kk | Camera having auto focus apparatus |
| DE3912165A1 (de) * | 1989-04-13 | 1989-09-28 | Christian Dipl Ing Bock | Zusatzsteuerung fuer autofocus-systeme |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50153633A (fr) * | 1974-05-07 | 1975-12-10 | ||
| JPS5114891A (en) * | 1974-07-27 | 1976-02-05 | Toyota Motor Co Ltd | Shokubaino seizoho |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3641889A (en) * | 1970-09-02 | 1972-02-15 | Polaroid Corp | Exposure control system |
| US3975744A (en) * | 1974-08-05 | 1976-08-17 | Polaroid Corporation | Automatic exposure control system |
| DE2755368A1 (de) * | 1977-12-12 | 1979-06-13 | Rollei Werke Franke Heidecke | Fotografische oder kinematografische kamera mit einer einrichtung zum zuordnen und anzeigen von schaerfentiefenbereich und objektiveinstellwerten |
| GB2013353B (en) * | 1977-12-30 | 1982-05-19 | Polaroid Corp | Focus control system for variable focus lenses |
| US4149792A (en) * | 1977-12-30 | 1979-04-17 | Polaroid Corporation | Misfocus prevention means for cameras having unidirectional automatic focusing |
| DD136898A1 (de) * | 1978-06-19 | 1979-08-01 | Hans Jehmlich | Schaltungsanordnung fuer photographische kameras |
| JPS5548737A (en) * | 1978-10-02 | 1980-04-08 | Konishiroku Photo Ind Co Ltd | Photoelectrically focus detecting device mounted camera |
| US4178087A (en) * | 1978-10-02 | 1979-12-11 | Polaroid Corporation | Autofocus movie camera having focus correction means |
-
1981
- 1981-03-02 DE DE19813107945 patent/DE3107945A1/de not_active Withdrawn
- 1981-03-02 FR FR8104096A patent/FR2477292A1/fr active Granted
- 1981-03-02 JP JP2850881A patent/JPS56133722A/ja active Granted
- 1981-03-02 CA CA000372072A patent/CA1151929A/fr not_active Expired
- 1981-03-03 GB GB8106595A patent/GB2070794B/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50153633A (fr) * | 1974-05-07 | 1975-12-10 | ||
| JPS5114891A (en) * | 1974-07-27 | 1976-02-05 | Toyota Motor Co Ltd | Shokubaino seizoho |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2477292B1 (fr) | 1984-04-27 |
| JPS56133722A (en) | 1981-10-20 |
| CA1151929A (fr) | 1983-08-16 |
| GB2070794A (en) | 1981-09-09 |
| FR2477292A1 (fr) | 1981-09-04 |
| GB2070794B (en) | 1984-01-11 |
| DE3107945A1 (de) | 1981-12-24 |
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