JPS52123637A - Variable magnification lens capable of readily sifting focal length - Google Patents

Variable magnification lens capable of readily sifting focal length

Info

Publication number
JPS52123637A
JPS52123637A JP3996076A JP3996076A JPS52123637A JP S52123637 A JPS52123637 A JP S52123637A JP 3996076 A JP3996076 A JP 3996076A JP 3996076 A JP3996076 A JP 3996076A JP S52123637 A JPS52123637 A JP S52123637A
Authority
JP
Japan
Prior art keywords
sifting
readily
focal length
variable magnification
magnification lens
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.)
Granted
Application number
JP3996076A
Other languages
Japanese (ja)
Other versions
JPS617607B2 (en
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 JP3996076A priority Critical patent/JPS52123637A/en
Priority to US05/784,787 priority patent/US4146305A/en
Publication of JPS52123637A publication Critical patent/JPS52123637A/en
Publication of JPS617607B2 publication Critical patent/JPS617607B2/ja
Granted legal-status Critical Current

Links

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  • Lenses (AREA)

Abstract

PURPOSE: To provide the back focus length of a length necessary for the color separation system of a TV camera, etc. and reduce the diameter of a rear imaging lens group by disposing a variable multiplication lens group in the movable group position between the front and rear groups of imaging lens groups.
COPYRIGHT: (C)1977,JPO&Japio
JP3996076A 1976-04-09 1976-04-09 Variable magnification lens capable of readily sifting focal length Granted JPS52123637A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP3996076A JPS52123637A (en) 1976-04-09 1976-04-09 Variable magnification lens capable of readily sifting focal length
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
JP3996076A JPS52123637A (en) 1976-04-09 1976-04-09 Variable magnification lens capable of readily sifting focal length

Publications (2)

Publication Number Publication Date
JPS52123637A true JPS52123637A (en) 1977-10-18
JPS617607B2 JPS617607B2 (en) 1986-03-07

Family

ID=12567514

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3996076A Granted JPS52123637A (en) 1976-04-09 1976-04-09 Variable magnification lens capable of readily sifting focal length

Country Status (1)

Country Link
JP (1) JPS52123637A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5848011A (en) * 1981-09-17 1983-03-19 Fuji Photo Optical Co Ltd Photographic lens for relay lens type color separation optical system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5848011A (en) * 1981-09-17 1983-03-19 Fuji Photo Optical Co Ltd Photographic lens for relay lens type color separation optical system

Also Published As

Publication number Publication date
JPS617607B2 (en) 1986-03-07

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