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WO2003038502A1 - Zoom lens, video cameara comprising same, and digital still camera - Google Patents

Zoom lens, video cameara comprising same, and digital still camera Download PDF

Info

Publication number
WO2003038502A1
WO2003038502A1 PCT/JP2002/011170 JP0211170W WO03038502A1 WO 2003038502 A1 WO2003038502 A1 WO 2003038502A1 JP 0211170 W JP0211170 W JP 0211170W WO 03038502 A1 WO03038502 A1 WO 03038502A1
Authority
WO
WIPO (PCT)
Prior art keywords
mathematical expression
cameara
video
zoom lens
same
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.)
Ceased
Application number
PCT/JP2002/011170
Other languages
French (fr)
Japanese (ja)
Inventor
Kazutake Boku
Katsu Yamada
Keizou Ishiguro
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of WO2003038502A1 publication Critical patent/WO2003038502A1/en
Anticipated expiration legal-status Critical
Ceased 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
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/144—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only
    • G02B15/1441—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
  • Studio Devices (AREA)
  • Lens Barrels (AREA)
  • Cameras In General (AREA)
  • Blocking Light For Cameras (AREA)
  • Structure And Mechanism Of Cameras (AREA)

Abstract

A small high-performance bright zoom lens having a high zoom ratio of about 10 and even an F number of 1.8 or more. The conditions of (mathematical expression 68) to (mathematical expression 71) below are satisfied where f1 is the synthesized focal length of a first lens group (11), f2 is the synthesized focal length of a second lens group (12), f3 is the synthesized focal length of a third lens group (14), f4 is the synthesized focal length of a fourth lens group (15), and fw is the synthesized focal length of the whole system at the wide end. [mathematical expression 68] 5.0<f1/fw<6.0 [mathematical expression 69] 0.95<|f2/fw|<1.05 [mathematical expression 70] 2.5<f3/fw<3.5 [mathematical expression 71] 2.5<f4/fw<4.0
PCT/JP2002/011170 2001-10-30 2002-10-28 Zoom lens, video cameara comprising same, and digital still camera Ceased WO2003038502A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001332561A JP2003140044A (en) 2001-10-30 2001-10-30 Zoom lens, video camera and digital still camera using the same
JP2001-332561 2001-10-30

Publications (1)

Publication Number Publication Date
WO2003038502A1 true WO2003038502A1 (en) 2003-05-08

Family

ID=19147957

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/011170 Ceased WO2003038502A1 (en) 2001-10-30 2002-10-28 Zoom lens, video cameara comprising same, and digital still camera

Country Status (2)

Country Link
JP (1) JP2003140044A (en)
WO (1) WO2003038502A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102053347A (en) * 2009-11-02 2011-05-11 株式会社尼康 Zoom lens, optical apparatus and method for manufacturing zoom lens
CN107643591A (en) * 2017-11-01 2018-01-30 河南中光学集团有限公司 A kind of antidamping Penetrating Fog visible light lens and implementation method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005326777A (en) * 2004-05-17 2005-11-24 Fujinon Corp Lens barrel
JP5159203B2 (en) 2007-08-03 2013-03-06 株式会社エルモ社 Zoom lens

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05281591A (en) * 1992-03-31 1993-10-29 Sony Corp Diaphragm device for photographic lens
JPH08292369A (en) * 1995-02-20 1996-11-05 Matsushita Electric Ind Co Ltd Zoom lens and video camera using the same
JPH1152241A (en) * 1997-08-07 1999-02-26 Matsushita Electric Ind Co Ltd Zoom lens, video camera and electronic still camera using the same
JPH11237551A (en) * 1997-12-18 1999-08-31 Matsushita Electric Ind Co Ltd Zoom lens and video camera using the same
US5995279A (en) * 1994-11-09 1999-11-30 Canon Kabushiki Kaisha Optical element, and taking optical system and image pickup apparatus using it
EP1046940A2 (en) * 1999-04-05 2000-10-25 Matsushita Electric Industrial Co., Ltd. Zoom lens and video camera using the same
JP2001116996A (en) * 1999-10-15 2001-04-27 Matsushita Electric Ind Co Ltd Zoom lens and video camera using the same
JP2001117004A (en) * 1999-10-14 2001-04-27 Matsushita Electric Ind Co Ltd Zoom lens and video camera using the same
JP2001221948A (en) * 2000-02-10 2001-08-17 Matsushita Electric Ind Co Ltd Zoom lens

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05281591A (en) * 1992-03-31 1993-10-29 Sony Corp Diaphragm device for photographic lens
US5995279A (en) * 1994-11-09 1999-11-30 Canon Kabushiki Kaisha Optical element, and taking optical system and image pickup apparatus using it
JPH08292369A (en) * 1995-02-20 1996-11-05 Matsushita Electric Ind Co Ltd Zoom lens and video camera using the same
JPH1152241A (en) * 1997-08-07 1999-02-26 Matsushita Electric Ind Co Ltd Zoom lens, video camera and electronic still camera using the same
JPH11237551A (en) * 1997-12-18 1999-08-31 Matsushita Electric Ind Co Ltd Zoom lens and video camera using the same
EP1046940A2 (en) * 1999-04-05 2000-10-25 Matsushita Electric Industrial Co., Ltd. Zoom lens and video camera using the same
JP2001117004A (en) * 1999-10-14 2001-04-27 Matsushita Electric Ind Co Ltd Zoom lens and video camera using the same
JP2001116996A (en) * 1999-10-15 2001-04-27 Matsushita Electric Ind Co Ltd Zoom lens and video camera using the same
JP2001221948A (en) * 2000-02-10 2001-08-17 Matsushita Electric Ind Co Ltd Zoom lens

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102053347A (en) * 2009-11-02 2011-05-11 株式会社尼康 Zoom lens, optical apparatus and method for manufacturing zoom lens
EP2325681A1 (en) * 2009-11-02 2011-05-25 Nikon Corporation Zoom Lens, Optical Apparatus And Method For Manufacturing Zoom Lens
US8379319B2 (en) 2009-11-02 2013-02-19 Nikon Corporation Zoom lens, optical apparatus and method for manufacturing zoom lens
CN102053347B (en) * 2009-11-02 2015-04-22 株式会社尼康 Zoom lens, optical apparatus and method for manufacturing zoom lens
CN107643591A (en) * 2017-11-01 2018-01-30 河南中光学集团有限公司 A kind of antidamping Penetrating Fog visible light lens and implementation method
CN107643591B (en) * 2017-11-01 2023-08-15 河南中光学集团有限公司 Anti-attenuation fog-penetrating visible light lens and implementation method

Also Published As

Publication number Publication date
JP2003140044A (en) 2003-05-14

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