GB9414125D0 - Lens system - Google Patents

Lens system

Info

Publication number
GB9414125D0
GB9414125D0 GB9414125A GB9414125A GB9414125D0 GB 9414125 D0 GB9414125 D0 GB 9414125D0 GB 9414125 A GB9414125 A GB 9414125A GB 9414125 A GB9414125 A GB 9414125A GB 9414125 D0 GB9414125 D0 GB 9414125D0
Authority
GB
United Kingdom
Prior art keywords
lens system
lens
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.)
Withdrawn
Application number
GB9414125A
Other versions
GB2280970A (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.)
Pentax Corp
Pentax Precision Co Ltd
Original Assignee
Asahi Seimitsu KK
Asahi Kogaku Kogyo 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 Asahi Seimitsu KK, Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Seimitsu KK
Publication of GB9414125D0 publication Critical patent/GB9414125D0/en
Publication of GB2280970A publication Critical patent/GB2280970A/en
Withdrawn legal-status Critical Current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
    • G02B13/16—Optical objectives specially designed for the purposes specified below for use in conjunction with image converters or intensifiers, or for use with projectors, e.g. objectives for projection TV
    • 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)
GB9414125A 1993-07-13 1994-07-13 Lens system Withdrawn GB2280970A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5172977A JPH0727973A (en) 1993-07-13 1993-07-13 Large diameter lens system

Publications (2)

Publication Number Publication Date
GB9414125D0 true GB9414125D0 (en) 1994-08-31
GB2280970A GB2280970A (en) 1995-02-15

Family

ID=15951880

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9414125A Withdrawn GB2280970A (en) 1993-07-13 1994-07-13 Lens system

Country Status (4)

Country Link
JP (1) JPH0727973A (en)
KR (1) KR960014989A (en)
DE (1) DE4424731A1 (en)
GB (1) GB2280970A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5724195A (en) * 1995-08-25 1998-03-03 Asahi Kogaku Kogyo Kabushiki Kaisha Fast super wide-angle lens system
US5684643A (en) * 1995-08-25 1997-11-04 Asahi Kogaku Kogyo Kabushiki Kaisha Fast wide-angle lens system
CN113341538B (en) * 2021-04-22 2022-04-08 湖南长步道光学科技有限公司 High-resolution optical system suitable for different object distances and FA lens
CN114089510B (en) * 2022-01-21 2022-06-24 江西联益光学有限公司 Optical lens

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635546A (en) * 1969-02-08 1972-01-18 Nippon Kogaku Kk Retrofocus-type lens system
JPS62138809A (en) * 1985-12-12 1987-06-22 Canon Inc Gaussian type lens with large aperture ratio
US4856881A (en) * 1986-09-25 1989-08-15 Canon Kabushiki Kaisha Photographic lens of long back focal length

Also Published As

Publication number Publication date
KR960014989A (en) 1996-05-22
GB2280970A (en) 1995-02-15
DE4424731A1 (en) 1995-01-19
JPH0727973A (en) 1995-01-31

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)