JPS5619024A - Optical deflector - Google Patents
Optical deflectorInfo
- Publication number
- JPS5619024A JPS5619024A JP9369779A JP9369779A JPS5619024A JP S5619024 A JPS5619024 A JP S5619024A JP 9369779 A JP9369779 A JP 9369779A JP 9369779 A JP9369779 A JP 9369779A JP S5619024 A JPS5619024 A JP S5619024A
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- signal
- driving
- polarizing
- circuit
- 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
- Mechanical Optical Scanning Systems (AREA)
Abstract
PURPOSE: To shorten the transient time of a polarizing mirror by providing secondary characteristic to the polarizing characteristics including the driving circuit of a polarizing device, driving the same by the signal corresponding to the movement of the mirror during the effective period of the movement of the polarizing mirror and driving the same by the signal comprising the two high and low levels during the transient period of the mirror.
CONSTITUTION: The polarizing device consists of a signal generating circuit 1, a driving circuit 2 and a galvanomirror 3. The deflecting characteristic of the galvanomirror 3 becomes tertiary because the inductance of its driving coil cannot be neglected but it is possible to make it secondary including the drive circuit. Namely, in said circuit, the current flowing in the driving coil is detected; its differential signal is fed back to the input and the counter electromotive force by the inductance of the driving coil is negated to make the characteritic secondary. At the maximum point t0 of saw-tooth-shaped deflection 10, the minimum level signal of the driving circuit 2 is applied to return the mirror in the direction of an inclined part 10. At the point t1 slightly before this, the maximum level signal is applied and this signal is changed over to the lamp signal at the point t2 at the speed of the inclined part 10 of the mirror. Thereby, the transient time may be shortened.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9369779A JPS5619024A (en) | 1979-07-25 | 1979-07-25 | Optical deflector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9369779A JPS5619024A (en) | 1979-07-25 | 1979-07-25 | Optical deflector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5619024A true JPS5619024A (en) | 1981-02-23 |
JPS6325324B2 JPS6325324B2 (en) | 1988-05-25 |
Family
ID=14089587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9369779A Granted JPS5619024A (en) | 1979-07-25 | 1979-07-25 | Optical deflector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5619024A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6148812A (en) * | 1984-08-16 | 1986-03-10 | Fuji Photo Film Co Ltd | Driving method of galvanometer mirror |
WO2006104084A1 (en) * | 2005-03-29 | 2006-10-05 | Brother Kogyo Kabushiki Kaisha | Optical scanner, optical scanning display, and optical scanning method |
WO2010035537A1 (en) * | 2008-09-25 | 2010-04-01 | ブラザー工業株式会社 | Optical scanning device, image display device, and method for driving optical scanning device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5489673A (en) * | 1977-07-26 | 1979-07-16 | Konishiroku Photo Ind Co Ltd | Driving system of galvanometer type photo deflector |
-
1979
- 1979-07-25 JP JP9369779A patent/JPS5619024A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5489673A (en) * | 1977-07-26 | 1979-07-16 | Konishiroku Photo Ind Co Ltd | Driving system of galvanometer type photo deflector |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6148812A (en) * | 1984-08-16 | 1986-03-10 | Fuji Photo Film Co Ltd | Driving method of galvanometer mirror |
JPH0627905B2 (en) * | 1984-08-16 | 1994-04-13 | 富士写真フイルム株式会社 | Galvanometer Tamila drive method |
WO2006104084A1 (en) * | 2005-03-29 | 2006-10-05 | Brother Kogyo Kabushiki Kaisha | Optical scanner, optical scanning display, and optical scanning method |
JP2006276399A (en) * | 2005-03-29 | 2006-10-12 | Brother Ind Ltd | Optical scanner, optical scanning type display device, and method of scanning |
US7884986B2 (en) | 2005-03-29 | 2011-02-08 | Brother Kogyo Kabushiki Kaisha | Optical scanning device, optical scanning display device, and optical scanning method |
WO2010035537A1 (en) * | 2008-09-25 | 2010-04-01 | ブラザー工業株式会社 | Optical scanning device, image display device, and method for driving optical scanning device |
JP2010078824A (en) * | 2008-09-25 | 2010-04-08 | Brother Ind Ltd | Optical scanning device, image display device, and method of driving the optical scanning device |
Also Published As
Publication number | Publication date |
---|---|
JPS6325324B2 (en) | 1988-05-25 |
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