IE781972L - Automatic and manual variable focusing lens system - Google Patents
Automatic and manual variable focusing lens systemInfo
- Publication number
- IE781972L IE781972L IE197278A IE197278A IE781972L IE 781972 L IE781972 L IE 781972L IE 197278 A IE197278 A IE 197278A IE 197278 A IE197278 A IE 197278A IE 781972 L IE781972 L IE 781972L
- Authority
- IE
- Ireland
- Prior art keywords
- automatic
- barrier
- manual
- lens system
- focusing lens
- Prior art date
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)
- Focusing (AREA)
- Lens Barrels (AREA)
- Automatic Focus Adjustment (AREA)
- Shutters For Cameras (AREA)
Abstract
A camera has automatic and manual focussing controls and means for preventing simultaneous operation thereof. As shown, a displaceable barrier 52 in one position prevents operation of a manual focus actuator 50, an automatic acoustic focusing system 12, 22, 26 being then operative. In another position, the barrier 52 is displaced allowing access to the manual focus actuator 50, the displacement of the barrier simultaneously disengaging the drive 30 from the automatic focusing means to the variable focus lens. The displacement of the barrier may also serve to remove electrical energy from the automatic focusing system to conserve electrical power. The invention is particularly intended for folding, self- processing cameras. <IMAGE>
[GB2005852A]
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US83858177A | 1977-10-03 | 1977-10-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
IE781972L true IE781972L (en) | 1979-04-03 |
IE47956B1 IE47956B1 (en) | 1984-08-08 |
Family
ID=25277484
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IE197278A IE47956B1 (en) | 1977-10-03 | 1978-10-02 | Apparatus having automatic and manual ranging means |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS5461525A (en) |
CA (1) | CA1122454A (en) |
DE (1) | DE2842851B2 (en) |
FR (1) | FR2404868A1 (en) |
GB (1) | GB2005852B (en) |
IE (1) | IE47956B1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5573026A (en) * | 1978-11-25 | 1980-06-02 | Minolta Camera Co Ltd | Automatic-manual focus controllable lens-barrel |
JPS5573025A (en) * | 1978-11-25 | 1980-06-02 | Minolta Camera Co Ltd | Changeover device of automatic-manual focus controllable lens-barrel |
JPS5619033A (en) * | 1979-07-25 | 1981-02-23 | Canon Inc | Automatic focus control unit |
JPS5648620A (en) * | 1979-09-28 | 1981-05-01 | Nippon Seimitsu Kogyo Kk | Automatic focus controlling mechanism of camera |
JPS62201738U (en) * | 1986-06-13 | 1987-12-23 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH400602A (en) * | 1961-07-29 | 1965-10-15 | Agfa Ag | Lens with variable focal length, with a device for optional focal length adjustment by hand and by a motor |
US3522764A (en) * | 1968-03-25 | 1970-08-04 | Polaroid Corp | Rangefinding and focusing system for photographic cameras and the like |
-
1978
- 1978-09-07 CA CA310,815A patent/CA1122454A/en not_active Expired
- 1978-10-02 IE IE197278A patent/IE47956B1/en not_active IP Right Cessation
- 1978-10-02 JP JP12142078A patent/JPS5461525A/en active Granted
- 1978-10-02 GB GB7838900A patent/GB2005852B/en not_active Expired
- 1978-10-02 DE DE19782842851 patent/DE2842851B2/en active Granted
- 1978-10-03 FR FR7828216A patent/FR2404868A1/en active Granted
Also Published As
Publication number | Publication date |
---|---|
DE2842851A1 (en) | 1979-04-05 |
FR2404868B1 (en) | 1984-08-10 |
CA1122454A (en) | 1982-04-27 |
JPS5461525A (en) | 1979-05-17 |
JPS5751084B2 (en) | 1982-10-30 |
GB2005852A (en) | 1979-04-25 |
GB2005852B (en) | 1982-03-17 |
IE47956B1 (en) | 1984-08-08 |
DE2842851C3 (en) | 1980-07-17 |
DE2842851B2 (en) | 1979-10-31 |
FR2404868A1 (en) | 1979-04-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Patent lapsed |