JPS5323645A - Zoom lens capable of easy transfer for focal distance range - Google Patents

Zoom lens capable of easy transfer for focal distance range

Info

Publication number
JPS5323645A
JPS5323645A JP9842776A JP9842776A JPS5323645A JP S5323645 A JPS5323645 A JP S5323645A JP 9842776 A JP9842776 A JP 9842776A JP 9842776 A JP9842776 A JP 9842776A JP S5323645 A JPS5323645 A JP S5323645A
Authority
JP
Japan
Prior art keywords
group
zoom lens
distance range
focal distance
lens capable
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.)
Pending
Application number
JP9842776A
Other languages
Japanese (ja)
Inventor
Kazuo Tanaka
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 JP9842776A priority Critical patent/JPS5323645A/en
Priority to US05/784,787 priority patent/US4146305A/en
Publication of JPS5323645A publication Critical patent/JPS5323645A/en
Pending legal-status Critical Current

Links

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  • Lenses (AREA)

Abstract

PURPOSE: To achieve a simple optical system which features a constant back focus and a small diameter of the rear lens group by constituting the image formation lens group with the front group, the attachment/detachment group of the positive refractive index and the rear group and by securing a replaceable mounting between the attachment/detachment group and the magnification change group.
COPYRIGHT: (C)1978,JPO&Japio
JP9842776A 1976-04-09 1976-08-17 Zoom lens capable of easy transfer for focal distance range Pending JPS5323645A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP9842776A JPS5323645A (en) 1976-08-17 1976-08-17 Zoom lens capable of easy transfer for focal distance range
US05/784,787 US4146305A (en) 1976-04-09 1977-04-05 Variable lens which can have its focal distance range easily changed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9842776A JPS5323645A (en) 1976-08-17 1976-08-17 Zoom lens capable of easy transfer for focal distance range

Publications (1)

Publication Number Publication Date
JPS5323645A true JPS5323645A (en) 1978-03-04

Family

ID=14219500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9842776A Pending JPS5323645A (en) 1976-04-09 1976-08-17 Zoom lens capable of easy transfer for focal distance range

Country Status (1)

Country Link
JP (1) JPS5323645A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5762437U (en) * 1980-09-29 1982-04-13
JPS5784417A (en) * 1980-11-13 1982-05-26 Canon Inc Optical system for focal length conversion
JPS60208723A (en) * 1984-04-02 1985-10-21 Canon Inc Fast zoom lens of high variable power
JPH02100010A (en) * 1988-10-07 1990-04-12 Canon Inc Zoom lens variable in variable power range
JPH02100009A (en) * 1988-10-07 1990-04-12 Canon Inc Zoom lens variable in variable power range
WO2019131992A1 (en) * 2017-12-29 2019-07-04 株式会社ニコン Optical system, optical equipment, and optical system manufacturing method
JP2019120770A (en) * 2017-12-29 2019-07-22 株式会社ニコン Optical system, optical device, and method for manufacturing optical system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5762437U (en) * 1980-09-29 1982-04-13
JPS5784417A (en) * 1980-11-13 1982-05-26 Canon Inc Optical system for focal length conversion
JPS60208723A (en) * 1984-04-02 1985-10-21 Canon Inc Fast zoom lens of high variable power
JPH02100010A (en) * 1988-10-07 1990-04-12 Canon Inc Zoom lens variable in variable power range
JPH02100009A (en) * 1988-10-07 1990-04-12 Canon Inc Zoom lens variable in variable power range
WO2019131992A1 (en) * 2017-12-29 2019-07-04 株式会社ニコン Optical system, optical equipment, and optical system manufacturing method
JP2019120770A (en) * 2017-12-29 2019-07-22 株式会社ニコン Optical system, optical device, and method for manufacturing optical system

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