JPS54161906A - Galvamirror device - Google Patents
Galvamirror deviceInfo
- Publication number
- JPS54161906A JPS54161906A JP7031078A JP7031078A JPS54161906A JP S54161906 A JPS54161906 A JP S54161906A JP 7031078 A JP7031078 A JP 7031078A JP 7031078 A JP7031078 A JP 7031078A JP S54161906 A JPS54161906 A JP S54161906A
- Authority
- JP
- Japan
- Prior art keywords
- voice coil
- mirror
- magnetic
- support bar
- constitution
- 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
Abstract
PURPOSE: To achieve miniaturization, improve electrical controllability and enable mounting adjustment, etc. to be readily performed by the constitution of inserting the voice coil mounted to the mirror in the two magnetic gaps in the magnetic circuit forming a round loop.
CONSTITUTION: A circular mirror 7 is rotatable about a support bar 8 having torsional spring characteristic. A voice coil 10 wound on a cylindrical bobbin is mounted to this and the voice coil 10 is inserted together with magnetic fluid 11 in the magnetic gaps formed by an outer yoke 12 and inner magnetic poles 13 and 13'. When current is flowed to the voice coil 10 from the outside, the couple of forces is produced with the support bar 8 being the center of the disc including the mirror 7 as a center, causing the mirror 7 to rotate and vibrate about the support bar 8. This vibration system receives damping action owing to the viscosity of the magnetic fluid 11, thus providing smooth frequency characteristics.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7031078A JPS54161906A (en) | 1978-06-13 | 1978-06-13 | Galvamirror device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7031078A JPS54161906A (en) | 1978-06-13 | 1978-06-13 | Galvamirror device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54161906A true JPS54161906A (en) | 1979-12-22 |
JPS6118731B2 JPS6118731B2 (en) | 1986-05-14 |
Family
ID=13427749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7031078A Granted JPS54161906A (en) | 1978-06-13 | 1978-06-13 | Galvamirror device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54161906A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5740762A (en) * | 1980-07-22 | 1982-03-06 | Thomson Csf | Electric controlled optical deflector |
JPS5763323U (en) * | 1980-09-30 | 1982-04-15 | ||
JPS5982339U (en) * | 1982-11-22 | 1984-06-04 | 旭光学工業株式会社 | movable mirror device |
JPS6370825A (en) * | 1986-09-12 | 1988-03-31 | Matsushita Electric Ind Co Ltd | Oscillating mirror device |
JPH05325228A (en) * | 1992-11-27 | 1993-12-10 | Seiko Epson Corp | Optical recording and reproducing device |
-
1978
- 1978-06-13 JP JP7031078A patent/JPS54161906A/en active Granted
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5740762A (en) * | 1980-07-22 | 1982-03-06 | Thomson Csf | Electric controlled optical deflector |
JPH0345366B2 (en) * | 1980-07-22 | 1991-07-10 | Thomson Csf | |
JPS5763323U (en) * | 1980-09-30 | 1982-04-15 | ||
JPS5982339U (en) * | 1982-11-22 | 1984-06-04 | 旭光学工業株式会社 | movable mirror device |
JPS6370825A (en) * | 1986-09-12 | 1988-03-31 | Matsushita Electric Ind Co Ltd | Oscillating mirror device |
JPH05325228A (en) * | 1992-11-27 | 1993-12-10 | Seiko Epson Corp | Optical recording and reproducing device |
Also Published As
Publication number | Publication date |
---|---|
JPS6118731B2 (en) | 1986-05-14 |
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