JPS5662216A - Reflection imaging optical system - Google Patents
Reflection imaging optical systemInfo
- Publication number
- JPS5662216A JPS5662216A JP13794379A JP13794379A JPS5662216A JP S5662216 A JPS5662216 A JP S5662216A JP 13794379 A JP13794379 A JP 13794379A JP 13794379 A JP13794379 A JP 13794379A JP S5662216 A JPS5662216 A JP S5662216A
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- optical system
- imaging optical
- light
- convex mirror
- 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.)
- Granted
Links
Abstract
PURPOSE: To enable an image of good contrast and high space fequencies to be obtained by using the central part of a convex mirror as a region where light does not reflect.
CONSTITUTION: This is a reflection imaging optical system wherein a concave mirror and a convex mirror are provided in such a manner that their mirror surfaces oppose, the luminous flux emitted from an object reflects on the concave mirrorthen reflects on the convex mirror after which it reflects on the concave mirror and forms an image. The central part θ3 of the convex mirror is constituted to either it absorbs the light for exposure or permits its transmission to provide a region where the light does not reflect.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13794379A JPS5662216A (en) | 1979-10-25 | 1979-10-25 | Reflection imaging optical system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13794379A JPS5662216A (en) | 1979-10-25 | 1979-10-25 | Reflection imaging optical system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5662216A true JPS5662216A (en) | 1981-05-28 |
JPS6329723B2 JPS6329723B2 (en) | 1988-06-15 |
Family
ID=15210325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13794379A Granted JPS5662216A (en) | 1979-10-25 | 1979-10-25 | Reflection imaging optical system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5662216A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2523865Y2 (en) * | 1990-06-20 | 1997-01-29 | オーバル機器工業株式会社 | Vibration-proof mass flowmeter |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS575544A (en) * | 1980-05-09 | 1982-01-12 | Ennobashion Tech Abanse Inota | Electromagnetic injector and production thereof |
-
1979
- 1979-10-25 JP JP13794379A patent/JPS5662216A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS575544A (en) * | 1980-05-09 | 1982-01-12 | Ennobashion Tech Abanse Inota | Electromagnetic injector and production thereof |
Also Published As
Publication number | Publication date |
---|---|
JPS6329723B2 (en) | 1988-06-15 |
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