JPS5689712A - Self-resonant photoscanner - Google Patents
Self-resonant photoscannerInfo
- Publication number
- JPS5689712A JPS5689712A JP16656979A JP16656979A JPS5689712A JP S5689712 A JPS5689712 A JP S5689712A JP 16656979 A JP16656979 A JP 16656979A JP 16656979 A JP16656979 A JP 16656979A JP S5689712 A JPS5689712 A JP S5689712A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- self
- signal generating
- oscillator
- generating 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.)
- Pending
Links
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
PURPOSE: To prevent break of the oscillator due to overswing just after starting, by adding circuit to the oscillating circuit and by connecting signal generating circuit to the adding circuit and by giving a constitution where the oscillator is oscillated with separate excitation by the signal generated from the signal generating circuit at the start time and continues oscillation with self-excitation after start.
CONSTITUTION: Adding circuit ADD is added to the oscillating circuit of the conventional known positive feedback loop constituted with the scanner and the AGC control amplifier, and signal generating circuit STA is connected to circuit ADD. The gain of the circuit loop is adjusted to approximately 1 where self-resonance can be continued. When electric power is supplied, a single pulse is generated from signal generating circuit STA after a prescribed time, and driving coil SOL of the scanner is triggerred through adding circuit ADD and is operated. An induced voltage is generated in detection coil DET and is fed back positively to the control amplifier. The AGC outputs a voltage to make the amplitude of the oscillator constant, and thus, self-resonant oscillation is continued. Consequently, break of the oscillator due to overswing just after starting is prevented.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16656979A JPS5689712A (en) | 1979-12-21 | 1979-12-21 | Self-resonant photoscanner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16656979A JPS5689712A (en) | 1979-12-21 | 1979-12-21 | Self-resonant photoscanner |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5689712A true JPS5689712A (en) | 1981-07-21 |
Family
ID=15833685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16656979A Pending JPS5689712A (en) | 1979-12-21 | 1979-12-21 | Self-resonant photoscanner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5689712A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59195218A (en) * | 1983-04-20 | 1984-11-06 | Nippon Teresukomu Kk | Resonance type scanner with phase controller |
JP2002228966A (en) * | 2001-01-31 | 2002-08-14 | Olympus Optical Co Ltd | Laser beam scanner |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5439140A (en) * | 1978-05-22 | 1979-03-26 | Jeol Ltd | Optical scanner |
-
1979
- 1979-12-21 JP JP16656979A patent/JPS5689712A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5439140A (en) * | 1978-05-22 | 1979-03-26 | Jeol Ltd | Optical scanner |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59195218A (en) * | 1983-04-20 | 1984-11-06 | Nippon Teresukomu Kk | Resonance type scanner with phase controller |
JPH0548453B2 (en) * | 1983-04-20 | 1993-07-21 | Shimosa Chukei | |
JP2002228966A (en) * | 2001-01-31 | 2002-08-14 | Olympus Optical Co Ltd | Laser beam scanner |
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