JPS5511269A - Close-up changeover device of zoom lens - Google Patents

Close-up changeover device of zoom lens

Info

Publication number
JPS5511269A
JPS5511269A JP8548778A JP8548778A JPS5511269A JP S5511269 A JPS5511269 A JP S5511269A JP 8548778 A JP8548778 A JP 8548778A JP 8548778 A JP8548778 A JP 8548778A JP S5511269 A JPS5511269 A JP S5511269A
Authority
JP
Japan
Prior art keywords
lens
guide hole
close
barrel
shaped guide
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
JP8548778A
Other languages
Japanese (ja)
Inventor
Nobuo Iwaoka
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP8548778A priority Critical patent/JPS5511269A/en
Publication of JPS5511269A publication Critical patent/JPS5511269A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a close-up, with the second lens stopped, by drawing back the third lens only, by providing a U-shaped guide hole in a fixed barrel, and providing guide holes for second and thired lenses and a V-shaped guide hole for turning in a rotating lens barrel.
CONSTITUTION: A U-shaped guide hole 5 is provided in a fixed barrel, and second lens guide holes 6, 7, third lens guide holes 8, 9, and a V-shaped guide hole 10 are provided in a rotating lens barrel 4. A stepped protuberance 11 of an operation barrel 1 is inserted into the guide hole 10 through the guide hole 5. In this setup, therefore, when the operation barrel 1 is drawn back to the limit for close-up, the second lens 12 fitted in an extended part 7 of the guide hole 6 does not move, and only the third lens 13 fitted in an extended part 9 of the guide hole 8 retreats, so that close-up may be obtained without requiring attachment lens 3. In addition, only by turning the operation barrel 1 right and left, variable magnification and close-up can be changed over.
COPYRIGHT: (C)1980,JPO&Japio
JP8548778A 1978-07-12 1978-07-12 Close-up changeover device of zoom lens Pending JPS5511269A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8548778A JPS5511269A (en) 1978-07-12 1978-07-12 Close-up changeover device of zoom lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8548778A JPS5511269A (en) 1978-07-12 1978-07-12 Close-up changeover device of zoom lens

Publications (1)

Publication Number Publication Date
JPS5511269A true JPS5511269A (en) 1980-01-26

Family

ID=13860270

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8548778A Pending JPS5511269A (en) 1978-07-12 1978-07-12 Close-up changeover device of zoom lens

Country Status (1)

Country Link
JP (1) JPS5511269A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4415221A (en) * 1980-10-01 1983-11-15 Tokai Electrie Wire Company Limited Female type electrical connector
JPS616279U (en) * 1984-06-18 1986-01-14 株式会社 ニチフ端子工業 electrical connector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4415221A (en) * 1980-10-01 1983-11-15 Tokai Electrie Wire Company Limited Female type electrical connector
JPS616279U (en) * 1984-06-18 1986-01-14 株式会社 ニチフ端子工業 electrical connector

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