JP3996981B2 - 投射装置 - Google Patents

投射装置 Download PDF

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Publication number
JP3996981B2
JP3996981B2 JP24974797A JP24974797A JP3996981B2 JP 3996981 B2 JP3996981 B2 JP 3996981B2 JP 24974797 A JP24974797 A JP 24974797A JP 24974797 A JP24974797 A JP 24974797A JP 3996981 B2 JP3996981 B2 JP 3996981B2
Authority
JP
Japan
Prior art keywords
group
lens
projection
refractive power
conjugate point
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
JP24974797A
Other languages
English (en)
Japanese (ja)
Other versions
JPH1172703A (ja
JPH1172703A5 (enExample
Inventor
奥山　　敦
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 JP24974797A priority Critical patent/JP3996981B2/ja
Publication of JPH1172703A publication Critical patent/JPH1172703A/ja
Publication of JPH1172703A5 publication Critical patent/JPH1172703A5/ja
Application granted granted Critical
Publication of JP3996981B2 publication Critical patent/JP3996981B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Lenses (AREA)
JP24974797A 1997-08-29 1997-08-29 投射装置 Expired - Fee Related JP3996981B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24974797A JP3996981B2 (ja) 1997-08-29 1997-08-29 投射装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24974797A JP3996981B2 (ja) 1997-08-29 1997-08-29 投射装置

Publications (3)

Publication Number Publication Date
JPH1172703A JPH1172703A (ja) 1999-03-16
JPH1172703A5 JPH1172703A5 (enExample) 2005-02-24
JP3996981B2 true JP3996981B2 (ja) 2007-10-24

Family

ID=17197624

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24974797A Expired - Fee Related JP3996981B2 (ja) 1997-08-29 1997-08-29 投射装置

Country Status (1)

Country Link
JP (1) JP3996981B2 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10156708B2 (en) 2016-10-20 2018-12-18 Seiko Epson Corporation Projection zoom lens and projection type image display device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1574890B1 (en) 2004-03-10 2016-06-29 Canon Kabushiki Kaisha Zoom lens and image display apparatus including the zoom lens
CN109870750A (zh) * 2019-03-18 2019-06-11 北京信息科技大学 一种仿生人眼自动对焦光学系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10156708B2 (en) 2016-10-20 2018-12-18 Seiko Epson Corporation Projection zoom lens and projection type image display device

Also Published As

Publication number Publication date
JPH1172703A (ja) 1999-03-16

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