JPS5550201A - Lens driving device - Google Patents
Lens driving deviceInfo
- Publication number
- JPS5550201A JPS5550201A JP12364378A JP12364378A JPS5550201A JP S5550201 A JPS5550201 A JP S5550201A JP 12364378 A JP12364378 A JP 12364378A JP 12364378 A JP12364378 A JP 12364378A JP S5550201 A JPS5550201 A JP S5550201A
- Authority
- JP
- Japan
- Prior art keywords
- speed command
- lens
- movement
- lens driving
- speed
- 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
Links
Landscapes
- Automatic Focus Adjustment (AREA)
- Focusing (AREA)
- Lens Barrels (AREA)
Abstract
PURPOSE: To let the relations between the movement quantity and focal length of the lens or the subject distance become directly proportional by modulating a fixed speed command signal by the driving position of the lens thereby changing the speed command.
CONSTITUTION: In the lens driving device which is so arranged that the movement of the lens is defined by a lens driving member and that the lens driving member is made rotation-drivable by a servo motor based on speed command signal, a servo motor 12 is not driven at a fixed speed and its moving speed is increased at the wide end to increase the movement quantity per unit time and conversely its moving speed is lowered to decrease the movement quantity per unit time on the telephoto side by forming the speed command output MSI having focal length-moving speed characteristics with a speed command control circuit 15 and modulating the fixed speed command signal SI by the position detection signal. Thereby, the image plane may be changed by natural movement.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12364378A JPS5550201A (en) | 1978-10-09 | 1978-10-09 | Lens driving device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12364378A JPS5550201A (en) | 1978-10-09 | 1978-10-09 | Lens driving device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5550201A true JPS5550201A (en) | 1980-04-11 |
JPS6129481B2 JPS6129481B2 (en) | 1986-07-07 |
Family
ID=14865663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12364378A Granted JPS5550201A (en) | 1978-10-09 | 1978-10-09 | Lens driving device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5550201A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59192214A (en) * | 1983-04-15 | 1984-10-31 | Matsushita Electric Ind Co Ltd | Lens moving device |
JPS60108814A (en) * | 1983-11-18 | 1985-06-14 | Matsushita Electric Ind Co Ltd | Lens moving device |
JPS63167336A (en) * | 1986-12-27 | 1988-07-11 | Victor Co Of Japan Ltd | Zooming system |
JPH02163712A (en) * | 1988-12-16 | 1990-06-25 | Matsushita Electric Ind Co Ltd | Zoom lens system and zoom driving method |
WO2012148354A1 (en) * | 2011-04-29 | 2012-11-01 | Razer (Asia-Pacific) Pte Ltd | A cam mechanism |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5020721A (en) * | 1973-06-21 | 1975-03-05 | ||
JPS50140119A (en) * | 1974-04-30 | 1975-11-10 |
-
1978
- 1978-10-09 JP JP12364378A patent/JPS5550201A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5020721A (en) * | 1973-06-21 | 1975-03-05 | ||
JPS50140119A (en) * | 1974-04-30 | 1975-11-10 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59192214A (en) * | 1983-04-15 | 1984-10-31 | Matsushita Electric Ind Co Ltd | Lens moving device |
JPS60108814A (en) * | 1983-11-18 | 1985-06-14 | Matsushita Electric Ind Co Ltd | Lens moving device |
JPS63167336A (en) * | 1986-12-27 | 1988-07-11 | Victor Co Of Japan Ltd | Zooming system |
JPH02163712A (en) * | 1988-12-16 | 1990-06-25 | Matsushita Electric Ind Co Ltd | Zoom lens system and zoom driving method |
WO2012148354A1 (en) * | 2011-04-29 | 2012-11-01 | Razer (Asia-Pacific) Pte Ltd | A cam mechanism |
CN103597251A (en) * | 2011-04-29 | 2014-02-19 | 雷蛇(亚太)私人有限公司 | A cam mechanism |
US20140174249A1 (en) * | 2011-04-29 | 2014-06-26 | Ming Li | Cam Mechanism |
US9388887B2 (en) * | 2011-04-29 | 2016-07-12 | Razer (Asia-Pacific) Pte Ltd. | Cam mechanism |
TWI547656B (en) * | 2011-04-29 | 2016-09-01 | 雷蛇(亞太)私人有限公司 | A cam mechanism |
Also Published As
Publication number | Publication date |
---|---|
JPS6129481B2 (en) | 1986-07-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5317340A (en) | Recording device | |
JPS5330223A (en) | Automaitc code reading unit | |
JPS5412833A (en) | Oscillating mirror driving device | |
EP0355640A3 (en) | Focal length changeable camera | |
FR2337966A1 (en) | MOTOR SPEED CONTROL DEVICE | |
JPS51138437A (en) | Device for driving optical blades | |
JPS5550201A (en) | Lens driving device | |
JPS53113933A (en) | Idle speed control device for engine | |
JPS5697325A (en) | Focus detecting method of camera | |
JPS5552007A (en) | Lens driving device with limitation of movable position | |
JPS5293323A (en) | Electromagnetic shutter | |
JPS5552006A (en) | Lens driving device | |
JPS5589805A (en) | Light processing device | |
JPS5334221A (en) | Wiper control device | |
JPS5397169A (en) | Constant speed reciprocating motion device | |
JPS6425112A (en) | Dynamic type zoom device | |
JPS5292438A (en) | Head movement control system for optical scanning unit | |
SU584256A1 (en) | Contactless flow direction sensor | |
JPS53139527A (en) | Focal plane shutter driven by linear motor | |
JPS5550205A (en) | Swing and tilt lens | |
JPS52143824A (en) | Search device for micro=fiche | |
JPS5538583A (en) | Exposure control mechanism in cine camera | |
JPS5341711A (en) | Driving control unit for control motor | |
JPS5350731A (en) | Zooming speed controller having holding circuit | |
JPS5370313A (en) | Poled motors |