JPS6413515A - Synchronizing signal generating device - Google Patents
Synchronizing signal generating deviceInfo
- Publication number
- JPS6413515A JPS6413515A JP62170815A JP17081587A JPS6413515A JP S6413515 A JPS6413515 A JP S6413515A JP 62170815 A JP62170815 A JP 62170815A JP 17081587 A JP17081587 A JP 17081587A JP S6413515 A JPS6413515 A JP S6413515A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical surface
- grid
- convergence
- convergence lens
- face
- 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
- Facsimile Transmission Control (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
PURPOSE:To contrive the improvement of the converging efficiency by providing a cylindrical grid on the cylindrical surface of a convergence lens for converging a synchronizing light beam and allowing it to be made incident on a photodetector. CONSTITUTION:A grid 40 has alternately a light transmission part and a light non-transmission part in the deflecting direction of a synchronizing light beam 22, arranged on the periphery centering around a deflection point 34a of a reverse side mirror 34, and forms a cylindrical surface 42a of a range exceeding a deflection angle of an oscillating mirror 26. The grid 40 is formed on the cylindrical surface 42a of a convergence lens 42. In such a way, the convergence lens can be formed by two pieces of lenses of the same shape whose one face is the cylindrical surface 42a, and the other face is aspherical, therefore, the convergence efficiency can be improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62170815A JPS6413515A (en) | 1987-07-08 | 1987-07-08 | Synchronizing signal generating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62170815A JPS6413515A (en) | 1987-07-08 | 1987-07-08 | Synchronizing signal generating device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6413515A true JPS6413515A (en) | 1989-01-18 |
Family
ID=15911846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62170815A Pending JPS6413515A (en) | 1987-07-08 | 1987-07-08 | Synchronizing signal generating device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6413515A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022130779A1 (en) * | 2020-12-16 | 2022-06-23 | ソニーグループ株式会社 | Optical module and ranging device |
-
1987
- 1987-07-08 JP JP62170815A patent/JPS6413515A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022130779A1 (en) * | 2020-12-16 | 2022-06-23 | ソニーグループ株式会社 | Optical module and ranging device |
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