JPS62186215A - Auxiliary lens system - Google Patents

Auxiliary lens system

Info

Publication number
JPS62186215A
JPS62186215A JP2686786A JP2686786A JPS62186215A JP S62186215 A JPS62186215 A JP S62186215A JP 2686786 A JP2686786 A JP 2686786A JP 2686786 A JP2686786 A JP 2686786A JP S62186215 A JPS62186215 A JP S62186215A
Authority
JP
Japan
Prior art keywords
lens
focusing
photographing
focal distance
auxiliary
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
JP2686786A
Other languages
Japanese (ja)
Inventor
Hiroshi Miyamae
Original Assignee
Konishiroku Photo Ind Co Ltd
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 Konishiroku Photo Ind Co Ltd filed Critical Konishiroku Photo Ind Co Ltd
Priority to JP2686786A priority Critical patent/JPS62186215A/en
Publication of JPS62186215A publication Critical patent/JPS62186215A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a compact auxiliary lens system for a photographing lens whose whole length is shorter than a focal distance by setting up the focal distance of the 1st lens group almost equally to that of a focusing lens group in a photographing lens system, and at the time of focusing, delivering the 1st lens group unitedly with the focusing lens group in the photographing lens system.
CONSTITUTION: The focusing device having the auxiliary lens system 2 is arranged adjacently to the photographing lens system 1 to be a zoom lens and the 1st lens group 4 in the auxiliary lens system 2 having almost the same focal distance as the focusing lens group 3 in the photographing system 1 is coupled with the focusing lens groups 3 each other and unitedly delivered by a focusing motor 5. A focusing detecting element 6 is arranged on a focus position of the lens system 2 and the drive of the focusing motor 5 is controlled by an output signal from the element 6. When the lens system 2 is focused on the element 6, a driver 7 and a control device 8 in the element 6 control the lens system 1 so that the lens system 1 is focused on a photographing surface 9.
COPYRIGHT: (C)1987,JPO&Japio
JP2686786A 1986-02-12 1986-02-12 Auxiliary lens system Pending JPS62186215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2686786A JPS62186215A (en) 1986-02-12 1986-02-12 Auxiliary lens system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2686786A JPS62186215A (en) 1986-02-12 1986-02-12 Auxiliary lens system

Publications (1)

Publication Number Publication Date
JPS62186215A true JPS62186215A (en) 1987-08-14

Family

ID=12205237

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2686786A Pending JPS62186215A (en) 1986-02-12 1986-02-12 Auxiliary lens system

Country Status (1)

Country Link
JP (1) JPS62186215A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007148138A (en) * 2005-11-29 2007-06-14 Kyocera Corp Image pickup lens, optical module, and portable terminal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007148138A (en) * 2005-11-29 2007-06-14 Kyocera Corp Image pickup lens, optical module, and portable terminal

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