JPS6478214A - Convergence optical system - Google Patents
Convergence optical systemInfo
- Publication number
- JPS6478214A JPS6478214A JP62235369A JP23536987A JPS6478214A JP S6478214 A JPS6478214 A JP S6478214A JP 62235369 A JP62235369 A JP 62235369A JP 23536987 A JP23536987 A JP 23536987A JP S6478214 A JPS6478214 A JP S6478214A
- Authority
- JP
- Japan
- Prior art keywords
- luminous flux
- optical system
- mirror
- reflecting surface
- directed
- 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)
Abstract
PURPOSE:To simplify the constitution and to reduce the cost by converging luminous flux which is made incident on a reflection optical system between two reflecting mirrors by multipath reflection and then projecting it from the reflection optical system. CONSTITUTION:The luminous flux 1 is increased in luminous flux diameter by a beam expander, etc., and then made incident on the reflecting surface of a polygon mirror 51. The luminous flux reflected by the polygon mirror 51 is made incident on a plane mirror M1 first, reflected by its reflecting surface, and then directed to a concave mirror M2. Here, the luminous flux incident on the concave mirror M2 is reflected again by its reflecting surface and directed to a plane mirror M1. Then the luminous flux is converged gradually because of the positive refracting power that the concave reflecting surface of the plane mirror M2 has and the luminous flux becomes converged luminous flux when exiting from the convergence optical system consisting of the plane mirror M1 and concave mirror M2 and is directed to a surface R to be scanned. Consequently, the luminous flux can be converged by the simple optical system with high light utilization efficiency and this is usable as an optical system replacing the scanning lens of a scanning optical system.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62235369A JPS6478214A (en) | 1987-09-18 | 1987-09-18 | Convergence optical system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62235369A JPS6478214A (en) | 1987-09-18 | 1987-09-18 | Convergence optical system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6478214A true JPS6478214A (en) | 1989-03-23 |
Family
ID=16985065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62235369A Pending JPS6478214A (en) | 1987-09-18 | 1987-09-18 | Convergence optical system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6478214A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6198563B1 (en) | 1996-05-17 | 2001-03-06 | Ricoh Company, Ltd. | Optical scanning apparatus with improved design flexibility |
-
1987
- 1987-09-18 JP JP62235369A patent/JPS6478214A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6198563B1 (en) | 1996-05-17 | 2001-03-06 | Ricoh Company, Ltd. | Optical scanning apparatus with improved design flexibility |
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