JP4208293B2 - ズームレンズ - Google Patents

ズームレンズ Download PDF

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Publication number
JP4208293B2
JP4208293B2 JP19805398A JP19805398A JP4208293B2 JP 4208293 B2 JP4208293 B2 JP 4208293B2 JP 19805398 A JP19805398 A JP 19805398A JP 19805398 A JP19805398 A JP 19805398A JP 4208293 B2 JP4208293 B2 JP 4208293B2
Authority
JP
Japan
Prior art keywords
group
lens
diffractive optical
zooming
optical element
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 - Fee Related
Application number
JP19805398A
Other languages
English (en)
Japanese (ja)
Other versions
JP2000019400A5 (enExample
JP2000019400A (ja
Inventor
博喜 中山
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 JP19805398A priority Critical patent/JP4208293B2/ja
Priority to US09/123,442 priority patent/US6081389A/en
Publication of JP2000019400A publication Critical patent/JP2000019400A/ja
Publication of JP2000019400A5 publication Critical patent/JP2000019400A5/ja
Application granted granted Critical
Publication of JP4208293B2 publication Critical patent/JP4208293B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Lenses (AREA)
JP19805398A 1997-07-31 1998-06-29 ズームレンズ Expired - Fee Related JP4208293B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP19805398A JP4208293B2 (ja) 1998-06-29 1998-06-29 ズームレンズ
US09/123,442 US6081389A (en) 1997-07-31 1998-07-28 Zoom lens of retrofocus type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19805398A JP4208293B2 (ja) 1998-06-29 1998-06-29 ズームレンズ

Publications (3)

Publication Number Publication Date
JP2000019400A JP2000019400A (ja) 2000-01-21
JP2000019400A5 JP2000019400A5 (enExample) 2005-10-06
JP4208293B2 true JP4208293B2 (ja) 2009-01-14

Family

ID=16384755

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19805398A Expired - Fee Related JP4208293B2 (ja) 1997-07-31 1998-06-29 ズームレンズ

Country Status (1)

Country Link
JP (1) JP4208293B2 (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6560019B2 (en) 1998-02-05 2003-05-06 Canon Kabushiki Kaisha Diffractive optical element and optical system having the same
JP3503631B2 (ja) 2001-04-27 2004-03-08 セイコーエプソン株式会社 投映用ズームレンズ及びこれを備えたプロジェクター
JP2002341242A (ja) * 2001-05-21 2002-11-27 Matsushita Electric Ind Co Ltd 投写レンズとそれを用いたプロジェクター
US6989939B2 (en) 2003-08-11 2006-01-24 Canon Kabushiki Kaisha Variable-power optical system, projection optical system, and image projection apparatus using the systems
JP6234784B2 (ja) * 2013-11-13 2017-11-22 富士フイルム株式会社 ズームレンズおよび撮像装置
CN112882143A (zh) * 2021-01-26 2021-06-01 维沃移动通信有限公司 微棱镜、摄像模组和电子设备

Also Published As

Publication number Publication date
JP2000019400A (ja) 2000-01-21

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