JPS5617317A - Light-beam scanner - Google Patents
Light-beam scannerInfo
- Publication number
- JPS5617317A JPS5617317A JP9227379A JP9227379A JPS5617317A JP S5617317 A JPS5617317 A JP S5617317A JP 9227379 A JP9227379 A JP 9227379A JP 9227379 A JP9227379 A JP 9227379A JP S5617317 A JPS5617317 A JP S5617317A
- Authority
- JP
- Japan
- Prior art keywords
- light
- medium
- electric signal
- scan
- voltage
- 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)
- Facsimile Scanning Arrangements (AREA)
Abstract
PURPOSE: To realize a miniature and inexpensive light-beam scanner by providing a body of revolution that has an arranged optical focusing system for a light beam from a light source and by making a focused beam take a scan as the body of revolution rotates.
CONSTITUTION: Medium 7 is arranged on a light-beam focusing surface at right angles to rotating shaft 5 and arc-shaped scanning lines 8 are formed. To scan the medium in its longer direction, medium 7 or rotary scanning unit 6 is moved as shown as A or A' respectively. For recording, an electric signal is applied to the driving electric power source of semiconductor laser 1, which performs modulation so as to write information on medium 7. For read operation, a constant-light output is being radiated by laser 1. Here, when medium 7 is transmissive, transmitted light is caught and led out as an electric signal by a proper optical system and photodetector and when reflective, on the other hand, a change in voltage at the terminal is led out as the electric signal by making use of the self-coupling effect that the voltage at the semiconductor laser terminal varies with the quantity of returning light.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9227379A JPS5617317A (en) | 1979-07-20 | 1979-07-20 | Light-beam scanner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9227379A JPS5617317A (en) | 1979-07-20 | 1979-07-20 | Light-beam scanner |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5617317A true JPS5617317A (en) | 1981-02-19 |
Family
ID=14049784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9227379A Pending JPS5617317A (en) | 1979-07-20 | 1979-07-20 | Light-beam scanner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5617317A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS585711A (en) * | 1981-07-02 | 1983-01-13 | Mita Ind Co Ltd | Light emitting and deflecting device |
JPS5950155U (en) * | 1982-09-27 | 1984-04-03 | 日本電気株式会社 | scanning mechanism |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53125044A (en) * | 1977-04-07 | 1978-11-01 | Canon Inc | Semiconductor laser scanner |
JPS5468255A (en) * | 1977-11-10 | 1979-06-01 | Ricoh Co Ltd | Laser recorder |
JPS5475211A (en) * | 1977-11-29 | 1979-06-15 | Toshiba Corp | Read mechanism of facsimile unit |
JPS5495240A (en) * | 1978-01-11 | 1979-07-27 | Hitachi Ltd | Light scanner |
-
1979
- 1979-07-20 JP JP9227379A patent/JPS5617317A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53125044A (en) * | 1977-04-07 | 1978-11-01 | Canon Inc | Semiconductor laser scanner |
JPS5468255A (en) * | 1977-11-10 | 1979-06-01 | Ricoh Co Ltd | Laser recorder |
JPS5475211A (en) * | 1977-11-29 | 1979-06-15 | Toshiba Corp | Read mechanism of facsimile unit |
JPS5495240A (en) * | 1978-01-11 | 1979-07-27 | Hitachi Ltd | Light scanner |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS585711A (en) * | 1981-07-02 | 1983-01-13 | Mita Ind Co Ltd | Light emitting and deflecting device |
JPS5950155U (en) * | 1982-09-27 | 1984-04-03 | 日本電気株式会社 | scanning mechanism |
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