JPS57102608A - Observation optical system - Google Patents

Observation optical system

Info

Publication number
JPS57102608A
JPS57102608A JP17882880A JP17882880A JPS57102608A JP S57102608 A JPS57102608 A JP S57102608A JP 17882880 A JP17882880 A JP 17882880A JP 17882880 A JP17882880 A JP 17882880A JP S57102608 A JPS57102608 A JP S57102608A
Authority
JP
Japan
Prior art keywords
lens
reflecting
luminous flux
parallel luminous
reaches
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
JP17882880A
Other languages
Japanese (ja)
Inventor
Fumi Hayashida
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.)
Nikon Corp
Original Assignee
Nikon Corp
Nippon Kogaku KK
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 Nikon Corp, Nippon Kogaku KK filed Critical Nikon Corp
Priority to JP17882880A priority Critical patent/JPS57102608A/en
Publication of JPS57102608A publication Critical patent/JPS57102608A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
    • G02B23/08—Periscopes

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Telescopes (AREA)

Abstract

PURPOSE:To make possible to execute optical arrangement and combination with parallel luminous flux having a small aperture, by installing collimator lens having comparatively short focal length to the lower part of the lens barrel. CONSTITUTION:After reflecting by a high angle prism 1, the luminous flux becomes parallel luminous flux by a collimator lens 6 by passing through an objective lens 2 and a relay lens system 3, and by passing through a reflecting prism 4, a reflecting mirro 7 and a pentagonal Dach-prism 19, it is converged by an image formation lens 8 to become an image of object I3. When a rotating reflection mirror 9 is placed in the solid line, the parallel luminous flux reaches an image formation lens 10 for camera and it reaches the camera after reflecting by a reflecting mirror 11. Then, photographing is performed. While, when the rotating reflecting mirror 9 is placed in the dot line, the parallel luminous flux sent from the collimator lens 6 reaches the image formation lens 13 for TV.
JP17882880A 1980-12-19 1980-12-19 Observation optical system Pending JPS57102608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17882880A JPS57102608A (en) 1980-12-19 1980-12-19 Observation optical system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17882880A JPS57102608A (en) 1980-12-19 1980-12-19 Observation optical system

Publications (1)

Publication Number Publication Date
JPS57102608A true JPS57102608A (en) 1982-06-25

Family

ID=16055368

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17882880A Pending JPS57102608A (en) 1980-12-19 1980-12-19 Observation optical system

Country Status (1)

Country Link
JP (1) JPS57102608A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6059230U (en) * 1983-09-29 1985-04-24 キヤノン株式会社 Secondary imaging type viewfinder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50141347A (en) * 1974-02-20 1975-11-13
JPS516946B1 (en) * 1969-06-24 1976-03-03

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS516946B1 (en) * 1969-06-24 1976-03-03
JPS50141347A (en) * 1974-02-20 1975-11-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6059230U (en) * 1983-09-29 1985-04-24 キヤノン株式会社 Secondary imaging type viewfinder
JPH04344Y2 (en) * 1983-09-29 1992-01-08

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