JPS5779909A - Optical system for astronomical telescope - Google Patents

Optical system for astronomical telescope

Info

Publication number
JPS5779909A
JPS5779909A JP15518280A JP15518280A JPS5779909A JP S5779909 A JPS5779909 A JP S5779909A JP 15518280 A JP15518280 A JP 15518280A JP 15518280 A JP15518280 A JP 15518280A JP S5779909 A JPS5779909 A JP S5779909A
Authority
JP
Japan
Prior art keywords
lens
group lens
focal length
positive
aberrations
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
JP15518280A
Other languages
English (en)
Other versions
JPS5813886B2 (ja
Inventor
Shoichi Araya
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.)
Goto Optical Manufacturing Co Ltd
Original Assignee
Goto Optical Manufacturing 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 Goto Optical Manufacturing Co Ltd filed Critical Goto Optical Manufacturing Co Ltd
Priority to JP15518280A priority Critical patent/JPS5813886B2/ja
Publication of JPS5779909A publication Critical patent/JPS5779909A/ja
Publication of JPS5813886B2 publication Critical patent/JPS5813886B2/ja
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/02—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective
    • G02B15/10—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective by adding a part, e.g. close-up attachment

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Telescopes (AREA)
  • Lenses (AREA)
JP15518280A 1980-11-06 1980-11-06 天体望遠鏡の光学系 Expired JPS5813886B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15518280A JPS5813886B2 (ja) 1980-11-06 1980-11-06 天体望遠鏡の光学系

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15518280A JPS5813886B2 (ja) 1980-11-06 1980-11-06 天体望遠鏡の光学系

Publications (2)

Publication Number Publication Date
JPS5779909A true JPS5779909A (en) 1982-05-19
JPS5813886B2 JPS5813886B2 (ja) 1983-03-16

Family

ID=15600272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15518280A Expired JPS5813886B2 (ja) 1980-11-06 1980-11-06 天体望遠鏡の光学系

Country Status (1)

Country Link
JP (1) JPS5813886B2 (ja)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6671106B2 (en) 2001-09-28 2003-12-30 Pentax Corporation Telescopic lens system
US6735385B2 (en) 2001-09-28 2004-05-11 Pentax Corporation Viewing apparatus having a photographing system
US6778773B2 (en) 2001-09-28 2004-08-17 Pentax Corporation Viewing apparatus having a photographing system
US6778330B2 (en) 2001-09-28 2004-08-17 Pentax Corporation Focusing apparatus of a telescopic lens system
US6788454B2 (en) 2001-09-28 2004-09-07 Pentax Corporation Viewing apparatus having a photographic function
US6829085B2 (en) 2001-09-28 2004-12-07 Pentax Corporation Viewing apparatus having a photographing system
US6927906B2 (en) 2001-09-28 2005-08-09 Pentax Corporation Binocular telescope with photographing function
US6937391B2 (en) 2001-09-28 2005-08-30 Pentax Corporation Optical viewer instrument with photographing function
US7268801B2 (en) 2002-11-14 2007-09-11 Pentax Corporation Digital-camera-provided binoculars

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6671106B2 (en) 2001-09-28 2003-12-30 Pentax Corporation Telescopic lens system
US6735385B2 (en) 2001-09-28 2004-05-11 Pentax Corporation Viewing apparatus having a photographing system
US6778773B2 (en) 2001-09-28 2004-08-17 Pentax Corporation Viewing apparatus having a photographing system
US6778330B2 (en) 2001-09-28 2004-08-17 Pentax Corporation Focusing apparatus of a telescopic lens system
US6788454B2 (en) 2001-09-28 2004-09-07 Pentax Corporation Viewing apparatus having a photographic function
US6829085B2 (en) 2001-09-28 2004-12-07 Pentax Corporation Viewing apparatus having a photographing system
US6927906B2 (en) 2001-09-28 2005-08-09 Pentax Corporation Binocular telescope with photographing function
US6937391B2 (en) 2001-09-28 2005-08-30 Pentax Corporation Optical viewer instrument with photographing function
US7268801B2 (en) 2002-11-14 2007-09-11 Pentax Corporation Digital-camera-provided binoculars

Also Published As

Publication number Publication date
JPS5813886B2 (ja) 1983-03-16

Similar Documents

Publication Publication Date Title
JPS54157620A (en) Photographic telephoto lens
JPS55163510A (en) Telephoto lens
JPS5779909A (en) Optical system for astronomical telescope
JPS5643618A (en) Attachment lens
US4093348A (en) Lens system with frontal aperture stop
JPS57201210A (en) Condenser lens
JPS56135815A (en) Lens for optical scanning
JPS54158225A (en) Photographic lens having long back focus and large aperture ratio
JPS5648607A (en) Wide-angle zoom lens
JPS5470826A (en) Wide-angle objective lens
JPS5470827A (en) Telephoto lens
US3115538A (en) Microscope objective
JPS5643619A (en) Wide angle zoom lens
JPS5746221A (en) Large aperture ratio objective lens
US2724992A (en) Photographic objective comprising three axially aligned and air spaced components
JPS56161517A (en) Telephoto zoom lens
JPS56165110A (en) Telephoto lens
JPS5639513A (en) Rear attachment lens
JPS55100519A (en) Photographic telephoto lens
JPS57158609A (en) Wide-angle lens
JPS5773713A (en) Rear conversion lens for astronomical telescope
JPS57201214A (en) Diopter adjustable finder optical system
JPS57130009A (en) Large-aperture lens
JPS5535334A (en) Posterior iris zoom lens
SU664137A1 (ru) Светосильный объектив