JPS5648621A - Finder which permits magnified observation of central part of visual field - Google Patents

Finder which permits magnified observation of central part of visual field

Info

Publication number
JPS5648621A
JPS5648621A JP12463779A JP12463779A JPS5648621A JP S5648621 A JPS5648621 A JP S5648621A JP 12463779 A JP12463779 A JP 12463779A JP 12463779 A JP12463779 A JP 12463779A JP S5648621 A JPS5648621 A JP S5648621A
Authority
JP
Japan
Prior art keywords
finder
visual field
central part
face
reflecting 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
Application number
JP12463779A
Other languages
Japanese (ja)
Inventor
Masatoshi Kimura
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.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP12463779A priority Critical patent/JPS5648621A/en
Publication of JPS5648621A publication Critical patent/JPS5648621A/en
Pending legal-status Critical Current

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  • Viewfinders (AREA)

Abstract

PURPOSE: To easily and surely magnify the central part of the visual field of a finder by magnifying and imaging the luminous flux from the other reflecting face provided on the reflecting face for forming the finder plane of a pentagonal prism.
CONSTITUTION: Subject light through a focal plate 1 is reflected by the reflecting face 2a of a pentagonal prsim 2 to image on the finder plane, and is observed through an eyepiece 3. On the other hand, part of this subject luminous flux reflects on the reflecting face 4a of the optical axis differing from that of the face 2a of a wedgelike optical element 4 provided to the face 2a and said luminous flux is magnified by a magnifying optical lens 5. With this constitution, the central part of the visual field of the finder is easily and surely magnified and the focusing may be easily and surely performed by observing this magnified image.
COPYRIGHT: (C)1981,JPO&Japio
JP12463779A 1979-09-27 1979-09-27 Finder which permits magnified observation of central part of visual field Pending JPS5648621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12463779A JPS5648621A (en) 1979-09-27 1979-09-27 Finder which permits magnified observation of central part of visual field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12463779A JPS5648621A (en) 1979-09-27 1979-09-27 Finder which permits magnified observation of central part of visual field

Publications (1)

Publication Number Publication Date
JPS5648621A true JPS5648621A (en) 1981-05-01

Family

ID=14890334

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12463779A Pending JPS5648621A (en) 1979-09-27 1979-09-27 Finder which permits magnified observation of central part of visual field

Country Status (1)

Country Link
JP (1) JPS5648621A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5229957U (en) * 1975-07-21 1977-03-02
JPS5235630A (en) * 1975-09-12 1977-03-18 Minolta Camera Co Ltd Enlarging optical system for finder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5229957U (en) * 1975-07-21 1977-03-02
JPS5235630A (en) * 1975-09-12 1977-03-18 Minolta Camera Co Ltd Enlarging optical system for finder

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