JPS5634153A - Automatic focus adjuster - Google Patents
Automatic focus adjusterInfo
- Publication number
- JPS5634153A JPS5634153A JP10903079A JP10903079A JPS5634153A JP S5634153 A JPS5634153 A JP S5634153A JP 10903079 A JP10903079 A JP 10903079A JP 10903079 A JP10903079 A JP 10903079A JP S5634153 A JPS5634153 A JP S5634153A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- gap
- moving
- linked
- coil
- 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
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE: To make small the unit in size, by forming gap of magnetic field toward radial direction through the combination of the ring shape permanent magnet and yoke magnetized radially or making notch to a part of the permanent magnet axially, and providing the concentric moving coil linked to the lens moving part in the gap.
CONSTITUTION: The permanent magnet 11 is radially magnetized and the yokes 12a, 12 respectively in contact with the inner and outer circumferences are provided. The magnetic field toward radial direction is present in the gap and the coil 14 is located in it. The lens moving part 15 supported with the springs 13, 13a is linked to the moving coil 14. Or, the moving coil 34 is provided in the gap 31a given with the notch axially for a part of the permanent magnet 31 magnetized radially and it is linked with the lens moving section 35 supported with the springs 33, 33a. The automatic adjustment of focus is made by the current flowing to the moving coils 14 and 34. Thus, the unit can be made small in size.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10903079A JPS5634153A (en) | 1979-08-29 | 1979-08-29 | Automatic focus adjuster |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10903079A JPS5634153A (en) | 1979-08-29 | 1979-08-29 | Automatic focus adjuster |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5634153A true JPS5634153A (en) | 1981-04-06 |
Family
ID=14499820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10903079A Pending JPS5634153A (en) | 1979-08-29 | 1979-08-29 | Automatic focus adjuster |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5634153A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57189140U (en) * | 1981-05-26 | 1982-12-01 | ||
JPS58123705A (en) * | 1982-01-18 | 1983-07-23 | Sharp Corp | Electromagnetic driving apparatus |
JPS58165737U (en) * | 1982-04-28 | 1983-11-04 | 株式会社日立製作所 | Objective lens drive device |
JPS61111174A (en) * | 1984-11-02 | 1986-05-29 | Nippon Steel Corp | Rotary fluidization and immersion painting method of material to be painted |
US7048972B2 (en) * | 1999-09-13 | 2006-05-23 | Koyo Seiko Co., Ltd. | Method for manufacturing coated article |
US7595095B2 (en) | 2000-09-12 | 2009-09-29 | Koyo Seiko Co. | Coated article, manufacturing method therefor and coating apparatus |
-
1979
- 1979-08-29 JP JP10903079A patent/JPS5634153A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57189140U (en) * | 1981-05-26 | 1982-12-01 | ||
JPS58123705A (en) * | 1982-01-18 | 1983-07-23 | Sharp Corp | Electromagnetic driving apparatus |
JPS6041444B2 (en) * | 1982-01-18 | 1985-09-17 | シャープ株式会社 | electromagnetic drive device |
JPS58165737U (en) * | 1982-04-28 | 1983-11-04 | 株式会社日立製作所 | Objective lens drive device |
JPS61111174A (en) * | 1984-11-02 | 1986-05-29 | Nippon Steel Corp | Rotary fluidization and immersion painting method of material to be painted |
US7048972B2 (en) * | 1999-09-13 | 2006-05-23 | Koyo Seiko Co., Ltd. | Method for manufacturing coated article |
US7595095B2 (en) | 2000-09-12 | 2009-09-29 | Koyo Seiko Co. | Coated article, manufacturing method therefor and coating apparatus |
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