JPS57606A - Method for generating synchronizing signal - Google Patents
Method for generating synchronizing signalInfo
- Publication number
- JPS57606A JPS57606A JP7405180A JP7405180A JPS57606A JP S57606 A JPS57606 A JP S57606A JP 7405180 A JP7405180 A JP 7405180A JP 7405180 A JP7405180 A JP 7405180A JP S57606 A JPS57606 A JP S57606A
- Authority
- JP
- Japan
- Prior art keywords
- synchronizing signal
- errors
- generation
- image quality
- high image
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/0005—Optical objectives specially designed for the purposes specified below having F-Theta characteristic
-
- 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
- G02B26/12—Scanning systems using multifaceted mirrors
- G02B26/125—Details of the optical system between the polygonal mirror and the image plane
- G02B26/126—Details of the optical system between the polygonal mirror and the image plane including curved mirrors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
PURPOSE:To reduce the errors in generation of synchronizing signals, and make recording to high image quality possible by providing a convex mirror or a cylindrical mirror having a curved face in a scanning direction at the intermediate between an optical deflector and a medium to be scanned, and taking out a beam for the synchronizing signal. CONSTITUTION:Part of the scanning beam which is reflected by an optical deflector and has passed through an ftheta lens is taken out by a convex mirror or a cylindrical mirror 9 and enters a photodetector 7. The output thereof is converted to the synchronizing signal consisting of the synchronising pulses generated at the rise of the photodetection signal by way of an amplifier and a comparator. Thereby, the errors in the generation of the synchronizing signal are reduced and the recording of high image quality is accomplished.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7405180A JPS57606A (en) | 1980-06-02 | 1980-06-02 | Method for generating synchronizing signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7405180A JPS57606A (en) | 1980-06-02 | 1980-06-02 | Method for generating synchronizing signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57606A true JPS57606A (en) | 1982-01-05 |
Family
ID=13535993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7405180A Pending JPS57606A (en) | 1980-06-02 | 1980-06-02 | Method for generating synchronizing signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57606A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4984857A (en) * | 1989-01-17 | 1991-01-15 | Iowa State University Research Foundation, Inc. | Linearization of scan velocity of resonant vibrating-mirror beam deflectors |
-
1980
- 1980-06-02 JP JP7405180A patent/JPS57606A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4984857A (en) * | 1989-01-17 | 1991-01-15 | Iowa State University Research Foundation, Inc. | Linearization of scan velocity of resonant vibrating-mirror beam deflectors |
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