JPS5782814A - Optical scanner - Google Patents
Optical scannerInfo
- Publication number
- JPS5782814A JPS5782814A JP15900280A JP15900280A JPS5782814A JP S5782814 A JPS5782814 A JP S5782814A JP 15900280 A JP15900280 A JP 15900280A JP 15900280 A JP15900280 A JP 15900280A JP S5782814 A JPS5782814 A JP S5782814A
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- scanner
- irradiated
- detectors
- center
- 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
- 230000003287 optical effect Effects 0.000 title abstract 5
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
PURPOSE:To automatically compensate the position error of the optical scan which is caused by the zero-point drift of a survo amplifier that drives an optical scanner as well as by the gain drift, by providing a position detector to the optical scanner including at least >=1-dimensional optical scan system. CONSTITUTION:An incident beam 1 is reflected by a scanning mirror 3 which is driven by a scanner 2 and then scanned on a scanning surface 6 by a scanning lens 4 and a beam splitter 5. On the other hand, the beam transmitted through the splitter 5 is irradiated on position detectors 9a and 9b. The distance between the detectors 9a and 9b is set equal to the maximum distance X of the scanning range. The electric output is set at zero when the beam is irradiated to the center of the position detector; and the position differential signal proportional to the distance measured from the center of the detector is obtained when the beam is irradiated at an off-center position, respectively. The position differential signals given from both detectors 9a and 9b are amplified by a position differential amplifier 11 to control both the zero point and the gain of a variable zero point/gain amplifier 13. This output signal is supplied to a servo amplifier 8 to control the scanner 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15900280A JPS5782814A (en) | 1980-11-12 | 1980-11-12 | Optical scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15900280A JPS5782814A (en) | 1980-11-12 | 1980-11-12 | Optical scanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5782814A true JPS5782814A (en) | 1982-05-24 |
Family
ID=15684078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15900280A Pending JPS5782814A (en) | 1980-11-12 | 1980-11-12 | Optical scanner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5782814A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59165018A (en) * | 1983-03-10 | 1984-09-18 | Fujitsu Ltd | Scanning system |
| US4548463A (en) * | 1984-02-13 | 1985-10-22 | International Business Machines Corporation | Holographic scanner control based on monitored diffraction efficiency |
| JPH0643368A (en) * | 1992-01-14 | 1994-02-18 | Matsushita Electric Ind Co Ltd | Two-dimension scanner |
| JPWO2006046592A1 (en) * | 2004-10-29 | 2008-05-22 | ペンタックス株式会社 | Compact optical scanning device |
-
1980
- 1980-11-12 JP JP15900280A patent/JPS5782814A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59165018A (en) * | 1983-03-10 | 1984-09-18 | Fujitsu Ltd | Scanning system |
| US4548463A (en) * | 1984-02-13 | 1985-10-22 | International Business Machines Corporation | Holographic scanner control based on monitored diffraction efficiency |
| JPH0643368A (en) * | 1992-01-14 | 1994-02-18 | Matsushita Electric Ind Co Ltd | Two-dimension scanner |
| JPWO2006046592A1 (en) * | 2004-10-29 | 2008-05-22 | ペンタックス株式会社 | Compact optical scanning device |
| JP4589931B2 (en) * | 2004-10-29 | 2010-12-01 | Ｈｏｙａ株式会社 | Compact optical scanning device |
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