JPS5271233A - Aspherical lens of retrofocus type - Google Patents

Aspherical lens of retrofocus type

Info

Publication number
JPS5271233A
JPS5271233A JP50147858A JP14785875A JPS5271233A JP S5271233 A JPS5271233 A JP S5271233A JP 50147858 A JP50147858 A JP 50147858A JP 14785875 A JP14785875 A JP 14785875A JP S5271233 A JPS5271233 A JP S5271233A
Authority
JP
Japan
Prior art keywords
aspherical lens
retrofocus type
aspherical
diaphragm
rendering
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
JP50147858A
Other languages
Japanese (ja)
Inventor
Akira Tajima
Kikuo Momiyama
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 JP50147858A priority Critical patent/JPS5271233A/en
Publication of JPS5271233A publication Critical patent/JPS5271233A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

PURPOSE:To correct aberration in order to attain a super widening by rendering both lens face before a diaphragm and lens face behind the diaphragm to be aspherical, and rendering simultaneously these aspherical faces to satisfly a definite requirement.
JP50147858A 1975-12-11 1975-12-11 Aspherical lens of retrofocus type Pending JPS5271233A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50147858A JPS5271233A (en) 1975-12-11 1975-12-11 Aspherical lens of retrofocus type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50147858A JPS5271233A (en) 1975-12-11 1975-12-11 Aspherical lens of retrofocus type

Publications (1)

Publication Number Publication Date
JPS5271233A true JPS5271233A (en) 1977-06-14

Family

ID=15439836

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50147858A Pending JPS5271233A (en) 1975-12-11 1975-12-11 Aspherical lens of retrofocus type

Country Status (1)

Country Link
JP (1) JPS5271233A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60169818A (en) * 1984-02-15 1985-09-03 Olympus Optical Co Ltd Objective lens for endoscope
JP2001159732A (en) * 1999-12-02 2001-06-12 Nikon Corp Super wide angle lens and photographic device having the lens
JP2009198854A (en) * 2008-02-22 2009-09-03 Nikon Corp Wide angle lens, image pickup apparatus having the same, and image forming method
JP2016136212A (en) * 2015-01-23 2016-07-28 株式会社ニコン Optical system, imaging device having the same, and manufacturing method of optical system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60169818A (en) * 1984-02-15 1985-09-03 Olympus Optical Co Ltd Objective lens for endoscope
JPH0412451B2 (en) * 1984-02-15 1992-03-04 Olympus Optical Co
JP2001159732A (en) * 1999-12-02 2001-06-12 Nikon Corp Super wide angle lens and photographic device having the lens
JP2009198854A (en) * 2008-02-22 2009-09-03 Nikon Corp Wide angle lens, image pickup apparatus having the same, and image forming method
JP2016136212A (en) * 2015-01-23 2016-07-28 株式会社ニコン Optical system, imaging device having the same, and manufacturing method of optical system

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