JPS5552006A - Lens driving device - Google Patents

Lens driving device

Info

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
Application number
JP12413378A
Other languages
Japanese (ja)
Inventor
Takashi Onuma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP12413378A priority Critical patent/JPS5552006A/en
Publication of JPS5552006A publication Critical patent/JPS5552006A/en
Pending legal-status Critical Current

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
JP12413378A 1978-10-11 1978-10-11 Lens driving device Pending JPS5552006A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (13)

* Cited by examiner, † Cited by third party
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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