JPS55106409A - Lens barrel of zoom lens capable of taking close-up - Google Patents

Lens barrel of zoom lens capable of taking close-up

Info

Publication number
JPS55106409A
JPS55106409A JP1362079A JP1362079A JPS55106409A JP S55106409 A JPS55106409 A JP S55106409A JP 1362079 A JP1362079 A JP 1362079A JP 1362079 A JP1362079 A JP 1362079A JP S55106409 A JPS55106409 A JP S55106409A
Authority
JP
Japan
Prior art keywords
close
zoom
cam
lens barrel
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
JP1362079A
Other languages
Japanese (ja)
Other versions
JPS626202B2 (en
Inventor
Shigeru Kamata
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 JP1362079A priority Critical patent/JPS55106409A/en
Publication of JPS55106409A publication Critical patent/JPS55106409A/en
Publication of JPS626202B2 publication Critical patent/JPS626202B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Lens Barrels (AREA)

Abstract

PURPOSE: To shorten the cam curve of zoom lens and shorten the lens barrel length, by moving the cam member in the optical axis direction in response to switching operation from zoom-up to close-up, and displacing the optical system to the close- up position.
CONSTITUTION: While a pressure piece of changeover means consisting of close-up operation member 26, pressure piece 28, etc. is contacting with cam face 14c in the zoom-up region of cam member 14, when the zoom operation member 16 is rotated, the variable power action is perfomed. When changing from zoom-up to close-up, by rotating the operation member 26, the pressure piece 28 is spaced from the cam face 14c along 14d or 14e, and th cam member 14 moves by the distance L, so that the optical system is displaced to the close-up position. In this constitution, cam groove for close-up is not necessary, and the cam curve may be shortened, so that the lens barrel length of the zoom lens may be also shortened.
COPYRIGHT: (C)1980,JPO&Japio
JP1362079A 1979-02-08 1979-02-08 Lens barrel of zoom lens capable of taking close-up Granted JPS55106409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1362079A JPS55106409A (en) 1979-02-08 1979-02-08 Lens barrel of zoom lens capable of taking close-up

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1362079A JPS55106409A (en) 1979-02-08 1979-02-08 Lens barrel of zoom lens capable of taking close-up

Publications (2)

Publication Number Publication Date
JPS55106409A true JPS55106409A (en) 1980-08-15
JPS626202B2 JPS626202B2 (en) 1987-02-09

Family

ID=11838267

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1362079A Granted JPS55106409A (en) 1979-02-08 1979-02-08 Lens barrel of zoom lens capable of taking close-up

Country Status (1)

Country Link
JP (1) JPS55106409A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61185712A (en) * 1985-02-13 1986-08-19 Nippon Kogaku Kk <Nikon> Macro photographing mechanism of zoom lens
JPH0250113A (en) * 1988-08-12 1990-02-20 Kyocera Corp Zoom lens barrel
JPH0241214U (en) * 1989-08-31 1990-03-22
JPH02146532A (en) * 1988-11-29 1990-06-05 Konica Corp Zoom lens camera
EP0430097A2 (en) * 1989-11-24 1991-06-05 Minolta Camera Kabushiki Kaisha Camera having a pseudo format
EP0609911A2 (en) * 1988-06-03 1994-08-10 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens
JP2002107612A (en) * 2000-09-28 2002-04-10 Minolta Co Ltd Portable terminal and method for driving lens unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5023811A (en) * 1973-07-03 1975-03-14
JPS5087206A (en) * 1973-12-05 1975-07-14

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5023811A (en) * 1973-07-03 1975-03-14
JPS5087206A (en) * 1973-12-05 1975-07-14

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61185712A (en) * 1985-02-13 1986-08-19 Nippon Kogaku Kk <Nikon> Macro photographing mechanism of zoom lens
EP0609911A2 (en) * 1988-06-03 1994-08-10 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens
EP0609911A3 (en) * 1988-06-03 1994-09-21 Asahi Optical Co Ltd Zoom lens.
JPH0250113A (en) * 1988-08-12 1990-02-20 Kyocera Corp Zoom lens barrel
JPH02146532A (en) * 1988-11-29 1990-06-05 Konica Corp Zoom lens camera
JPH0241214U (en) * 1989-08-31 1990-03-22
EP0430097A2 (en) * 1989-11-24 1991-06-05 Minolta Camera Kabushiki Kaisha Camera having a pseudo format
EP0430097A3 (en) * 1989-11-24 1992-10-07 Minolta Camera Kabushiki Kaisha Camera having a pseudo format
JP2002107612A (en) * 2000-09-28 2002-04-10 Minolta Co Ltd Portable terminal and method for driving lens unit

Also Published As

Publication number Publication date
JPS626202B2 (en) 1987-02-09

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