JPS6435516A - Lens barrel for zoom lens - Google Patents

Lens barrel for zoom lens

Info

Publication number
JPS6435516A
JPS6435516A JP19238187A JP19238187A JPS6435516A JP S6435516 A JPS6435516 A JP S6435516A JP 19238187 A JP19238187 A JP 19238187A JP 19238187 A JP19238187 A JP 19238187A JP S6435516 A JPS6435516 A JP S6435516A
Authority
JP
Japan
Prior art keywords
lens group
focusing lens
rotary member
focusing
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.)
Pending
Application number
JP19238187A
Other languages
Japanese (ja)
Inventor
Tetsuo Ishizuka
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 JP19238187A priority Critical patent/JPS6435516A/en
Publication of JPS6435516A publication Critical patent/JPS6435516A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To execute focusing at an arbitrary zooming position in an arbitrary distance between an object and an image, by controlling the movement of other lens group than a focusing lens group by combining a first rotary member and a fixed member, and controlling the movement of the focusing lens group by combining the first rotary member and a second rotary member. CONSTITUTION:In the first rotary member 10, a cam curve groove 41 for a focusing lens group, and cam curve grooves 42, 43 for other moving lens group except the focusing lens group are formed, and rotate at the time of zooming. In a fixed member 20, a guide groove 51 for other moving lens group except the focusing lens group is formed, and always stands still. In the second rotary member 30, a guide groove 52 for the focusing lens group is formed, and rotates at the time of focusing for adjusting a distance. In such a way, in inner focus and rear focus zoom lenses, a moving mechanism of the focusing lens group can be realized by a simple structure.
JP19238187A 1987-07-31 1987-07-31 Lens barrel for zoom lens Pending JPS6435516A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19238187A JPS6435516A (en) 1987-07-31 1987-07-31 Lens barrel for zoom lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19238187A JPS6435516A (en) 1987-07-31 1987-07-31 Lens barrel for zoom lens

Publications (1)

Publication Number Publication Date
JPS6435516A true JPS6435516A (en) 1989-02-06

Family

ID=16290350

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19238187A Pending JPS6435516A (en) 1987-07-31 1987-07-31 Lens barrel for zoom lens

Country Status (1)

Country Link
JP (1) JPS6435516A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03210542A (en) * 1990-01-16 1991-09-13 Fuji Photo Optical Co Ltd Zoom lens barrel
US5337187A (en) * 1991-11-20 1994-08-09 Nikon Corporation Zoom lens system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03210542A (en) * 1990-01-16 1991-09-13 Fuji Photo Optical Co Ltd Zoom lens barrel
US5337187A (en) * 1991-11-20 1994-08-09 Nikon Corporation Zoom lens system

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