GB1432641A - Wide angle lenses - Google Patents

Wide angle lenses

Info

Publication number
GB1432641A
GB1432641A GB3196673A GB3196673A GB1432641A GB 1432641 A GB1432641 A GB 1432641A GB 3196673 A GB3196673 A GB 3196673A GB 3196673 A GB3196673 A GB 3196673A GB 1432641 A GB1432641 A GB 1432641A
Authority
GB
United Kingdom
Prior art keywords
lens
convex
iii
aspheric
positive
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.)
Expired
Application number
GB3196673A
Other languages
English (en)
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
Publication of GB1432641A publication Critical patent/GB1432641A/en
Expired 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/04—Reversed telephoto objectives
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
GB3196673A 1972-07-04 1973-07-04 Wide angle lenses Expired GB1432641A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6635972A JPS5510049B2 (enrdf_load_stackoverflow) 1972-07-04 1972-07-04

Publications (1)

Publication Number Publication Date
GB1432641A true GB1432641A (en) 1976-04-22

Family

ID=13313567

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3196673A Expired GB1432641A (en) 1972-07-04 1973-07-04 Wide angle lenses

Country Status (3)

Country Link
JP (1) JPS5510049B2 (enrdf_load_stackoverflow)
DE (1) DE2334056C2 (enrdf_load_stackoverflow)
GB (1) GB1432641A (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5822724B2 (ja) * 1974-04-22 1983-05-11 キヤノン株式会社 ヒキユウメン オ モチイタ ダイコウケイコウカクレンズ
JPS5858516A (ja) * 1981-10-02 1983-04-07 Asahi Optical Co Ltd 非球面を用いた大口径比広角写真レンズ
JPS5858515A (ja) * 1981-10-02 1983-04-07 Asahi Optical Co Ltd 非球面を用いた大口径比広角写真レンズ
JPS5858514A (ja) * 1981-10-02 1983-04-07 Asahi Optical Co Ltd 非球面を用いた大口径比広角写真レンズ
CH658322A5 (fr) * 1983-04-20 1986-10-31 Francois Laurent Systeme optique additif divergent.
EP0473117B1 (de) * 1990-08-29 1995-09-06 Jos. Schneider Optische Werke Kreuznach GmbH & Co. KG Hochgeöffnetes Weitwinkelobjektiv
JP5111056B2 (ja) * 2007-10-30 2012-12-26 キヤノン株式会社 光学系及びそれを有する撮像装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US697959A (en) * 1899-11-23 1902-04-22 Zeiss Carl Fa Lens system.

Also Published As

Publication number Publication date
JPS4928336A (enrdf_load_stackoverflow) 1974-03-13
JPS5510049B2 (enrdf_load_stackoverflow) 1980-03-13
DE2334056A1 (de) 1974-01-17
DE2334056C2 (de) 1982-06-24

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19930703