JPS5552006A - Lens driving device - Google Patents
Lens driving deviceInfo
- Publication number
- JPS5552006A JPS5552006A JP12413378A JP12413378A JPS5552006A JP S5552006 A JPS5552006 A JP S5552006A JP 12413378 A JP12413378 A JP 12413378A JP 12413378 A JP12413378 A JP 12413378A JP S5552006 A JPS5552006 A JP S5552006A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- command signal
- signal
- control circuit
- moving
- 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.)
- Pending
Links
Landscapes
- Lens Barrels (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
PURPOSE: To perform lens driving of less mechanically undue motion by providing a speed control circuit, etc. and decelerating the converging speed thereof always at a fixed speed even if the moving speed is set at an arbitrary value.
CONSTITUTION: The position detecting signal LD from a potentiometer 14 and the moving position command signal LI from a zoom demand 16 are applied to a control circuit 15. According to the level difference of the abovementioned both signals LD and LI, the speed command signal SI is fetched out from the abovementioned control circuit 15. The speed control of a servo motor 12 is accomplished by this speed command signal SI. Here, the lens moves at a fixed speed S1 until the differential signal of the position detecting signal LD and moving position command signal LI lowers down to the specified level or under, e.g., like the alternate long and short dashes lines, after which it moves at the speed corresponding to the differential signal until it arrives at the B point from the C1 point. Since the converging speed is decelerated at a constant speed in this way irrespective of the magnitude of the moving speed, the lens driving of less undue motion may be accomplished.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12413378A JPS5552006A (en) | 1978-10-11 | 1978-10-11 | Lens driving device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12413378A JPS5552006A (en) | 1978-10-11 | 1978-10-11 | Lens driving device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5552006A true JPS5552006A (en) | 1980-04-16 |
Family
ID=14877731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12413378A Pending JPS5552006A (en) | 1978-10-11 | 1978-10-11 | Lens driving device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5552006A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5791370U (en) * | 1980-11-21 | 1982-06-05 | ||
JPS58177082A (en) * | 1982-04-09 | 1983-10-17 | Fuji Photo Optical Co Ltd | Focus operating device of television lens |
US5315345A (en) * | 1991-05-21 | 1994-05-24 | Asahi Kogaku Kogyo Kabushiki Kaisha | Power zoom lens and camera system having same |
US5396306A (en) * | 1991-05-21 | 1995-03-07 | Asahi Kogaku Kogyo Kabushiki Kaisha | Power lens and camera system |
US5450156A (en) * | 1991-05-21 | 1995-09-12 | Asahi Kogaku Kogyo Kabushiki Kaisha | Power zoom lens and camera having same |
JPH07281101A (en) * | 1994-04-11 | 1995-10-27 | Hatsukoo Shoji:Kk | Sighting telescope |
JP2003248161A (en) * | 2002-02-25 | 2003-09-05 | Fuji Photo Optical Co Ltd | Lens control system |
-
1978
- 1978-10-11 JP JP12413378A patent/JPS5552006A/en active Pending
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5791370U (en) * | 1980-11-21 | 1982-06-05 | ||
JPH0310483Y2 (en) * | 1980-11-21 | 1991-03-15 | ||
JPS58177082A (en) * | 1982-04-09 | 1983-10-17 | Fuji Photo Optical Co Ltd | Focus operating device of television lens |
US5367354A (en) * | 1991-05-21 | 1994-11-22 | Asahi Kogaku Kogyo Kabushiki Kaisha | Motor driven lens and camera system |
US5331367A (en) * | 1991-05-21 | 1994-07-19 | Asahi Kogaku Kogyo Kabushiki Kaisha | Camera system having power zoom lens |
US5363165A (en) * | 1991-05-21 | 1994-11-08 | Asahi Kogaku Kabushiki Kaisha | Power zoom lens and camera system |
US5315345A (en) * | 1991-05-21 | 1994-05-24 | Asahi Kogaku Kogyo Kabushiki Kaisha | Power zoom lens and camera system having same |
US5396306A (en) * | 1991-05-21 | 1995-03-07 | Asahi Kogaku Kogyo Kabushiki Kaisha | Power lens and camera system |
US5450156A (en) * | 1991-05-21 | 1995-09-12 | Asahi Kogaku Kogyo Kabushiki Kaisha | Power zoom lens and camera having same |
US5617173A (en) * | 1991-05-21 | 1997-04-01 | Asahi Kogaku Kogyo Kabushiki Kaisha | Camera system having power zoom lens |
US5664234A (en) * | 1991-05-21 | 1997-09-02 | Asahi Kogaku Kogyo Kabushiki Kaisha | Camera system having power zoom lens |
JPH07281101A (en) * | 1994-04-11 | 1995-10-27 | Hatsukoo Shoji:Kk | Sighting telescope |
JP2003248161A (en) * | 2002-02-25 | 2003-09-05 | Fuji Photo Optical Co Ltd | Lens control system |
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