JPS5662216A - Reflection imaging optical system - Google Patents

Reflection imaging optical system

Info

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
Application number
JP13794379A
Other languages
Japanese (ja)
Other versions
JPS6329723B2 (en
Inventor
Akiyoshi Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP13794379A priority Critical patent/JPS5662216A/en
Publication of JPS5662216A publication Critical patent/JPS5662216A/en
Publication of JPS6329723B2 publication Critical patent/JPS6329723B2/ja
Granted legal-status Critical Current

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
JP13794379A 1979-10-25 1979-10-25 Reflection imaging optical system Granted JPS5662216A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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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