WO2008108152A1 - 変倍光学系、撮像装置及びデジタル機器 - Google Patents

変倍光学系、撮像装置及びデジタル機器 Download PDF

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Publication number
WO2008108152A1
WO2008108152A1 PCT/JP2008/052535 JP2008052535W WO2008108152A1 WO 2008108152 A1 WO2008108152 A1 WO 2008108152A1 JP 2008052535 W JP2008052535 W JP 2008052535W WO 2008108152 A1 WO2008108152 A1 WO 2008108152A1
Authority
WO
WIPO (PCT)
Prior art keywords
variable magnification
optical system
lens group
lens
magnification optical
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/JP2008/052535
Other languages
English (en)
French (fr)
Inventor
Yasunari Fukuta
Keiji Matsusaka
Soh Ohzawa
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.)
Konica Minolta Opto Inc
Original Assignee
Konica Minolta Opto 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 Konica Minolta Opto Inc filed Critical Konica Minolta Opto Inc
Publication of WO2008108152A1 publication Critical patent/WO2008108152A1/ja
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
    • G02B15/16—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
    • G02B15/177—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a negative front lens or group of lenses
    • 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
    • G02B15/143—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 three groups only
    • G02B15/1435—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 three groups only the first group being negative
    • G02B15/143507—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 three groups only the first group being negative arranged -++

Landscapes

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

Abstract

　本発明は、高画素の撮像素子に対応可能で、また変倍駆動装置の負荷を減らして十分なコンパクト化を達成しつつ、変倍域全域にわたって収差が良好に補正されると共に環境温度変化に伴うバックフォーカス変動を抑え得る変倍光学系を提供する。このため、変倍光学系は、物体側から順に、負の光学的パワーを有する第１レンズ群と、正の光学的パワーを有する第２レンズ群とを含み、前記第１レンズ群は、少なくとも１枚の正レンズと少なくとも１枚の負レンズとの２枚以上のレンズで構成され、且つ、これらレンズの少なくとも２枚以上がプラスチック材料からなり、前記第２レンズ群内に、少なくとも１面が非球面であるガラスレンズが少なくとも１枚含まれている。
PCT/JP2008/052535 2007-03-01 2008-02-15 変倍光学系、撮像装置及びデジタル機器 Ceased WO2008108152A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-051594 2007-03-01
JP2007051594 2007-03-01

Publications (1)

Publication Number Publication Date
WO2008108152A1 true WO2008108152A1 (ja) 2008-09-12

Family

ID=39738049

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/052535 Ceased WO2008108152A1 (ja) 2007-03-01 2008-02-15 変倍光学系、撮像装置及びデジタル機器

Country Status (1)

Country Link
WO (1) WO2008108152A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101915979A (zh) * 2010-08-24 2010-12-15 中国航空工业集团公司洛阳电光设备研究所 一种消热差长焦电视光学系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10170826A (ja) * 1996-12-13 1998-06-26 Nikon Corp 変倍光学系
JP2004004765A (ja) * 2002-04-19 2004-01-08 Pentax Corp ズームレンズ系
JP2006119319A (ja) * 2004-10-21 2006-05-11 Konica Minolta Opto Inc 変倍光学系、撮像レンズ装置及びデジタル機器
JP2006301403A (ja) * 2005-04-22 2006-11-02 Konica Minolta Opto Inc 撮像レンズ、撮像装置及び携帯端末
JP2007033819A (ja) * 2005-07-26 2007-02-08 Konica Minolta Opto Inc 撮像光学系、撮像レンズ装置及びデジタル機器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10170826A (ja) * 1996-12-13 1998-06-26 Nikon Corp 変倍光学系
JP2004004765A (ja) * 2002-04-19 2004-01-08 Pentax Corp ズームレンズ系
JP2006119319A (ja) * 2004-10-21 2006-05-11 Konica Minolta Opto Inc 変倍光学系、撮像レンズ装置及びデジタル機器
JP2006301403A (ja) * 2005-04-22 2006-11-02 Konica Minolta Opto Inc 撮像レンズ、撮像装置及び携帯端末
JP2007033819A (ja) * 2005-07-26 2007-02-08 Konica Minolta Opto Inc 撮像光学系、撮像レンズ装置及びデジタル機器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101915979A (zh) * 2010-08-24 2010-12-15 中国航空工业集团公司洛阳电光设备研究所 一种消热差长焦电视光学系统

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