JPS5360655A - Zoom lens for infinite conjugate distance - Google Patents

Zoom lens for infinite conjugate distance

Info

Publication number
JPS5360655A
JPS5360655A JP13592676A JP13592676A JPS5360655A JP S5360655 A JPS5360655 A JP S5360655A JP 13592676 A JP13592676 A JP 13592676A JP 13592676 A JP13592676 A JP 13592676A JP S5360655 A JPS5360655 A JP S5360655A
Authority
JP
Japan
Prior art keywords
zoom lens
conjugate distance
infinite conjugate
magnification
infinite
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
JP13592676A
Other languages
Japanese (ja)
Other versions
JPS589401B2 (en
Inventor
Nagayoshi Hirano
Yasuo Honda
Ryoichi Doi
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.)
Fujinon Corp
Original Assignee
Fuji Photo Optical 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 Fuji Photo Optical Co Ltd filed Critical Fuji Photo Optical Co Ltd
Priority to JP51135926A priority Critical patent/JPS589401B2/en
Priority to DE2750571A priority patent/DE2750571C3/en
Priority to DE7734692U priority patent/DE7734692U1/en
Priority to GB47254/77A priority patent/GB1595088A/en
Publication of JPS5360655A publication Critical patent/JPS5360655A/en
Publication of JPS589401B2 publication Critical patent/JPS589401B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/144—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

PURPOSE: To completely eliminate the distorsion aberration, while maintaining the conjugate distance at a constant level during magnification, by moving first and second movable lens groups asymmetrically with respect to a diaphragm in response to the movement of a whole lens system for magnification.
COPYRIGHT: (C)1978,JPO&Japio
JP51135926A 1976-11-12 1976-11-12 Zoom lens at finite distance Expired JPS589401B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP51135926A JPS589401B2 (en) 1976-11-12 1976-11-12 Zoom lens at finite distance
DE2750571A DE2750571C3 (en) 1976-11-12 1977-11-11 Varifocal lens
DE7734692U DE7734692U1 (en) 1976-11-12 1977-11-11 ZOOM LENS SYSTEM
GB47254/77A GB1595088A (en) 1976-11-12 1977-11-14 Zoom lens systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51135926A JPS589401B2 (en) 1976-11-12 1976-11-12 Zoom lens at finite distance

Publications (2)

Publication Number Publication Date
JPS5360655A true JPS5360655A (en) 1978-05-31
JPS589401B2 JPS589401B2 (en) 1983-02-21

Family

ID=15163074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51135926A Expired JPS589401B2 (en) 1976-11-12 1976-11-12 Zoom lens at finite distance

Country Status (3)

Country Link
JP (1) JPS589401B2 (en)
DE (2) DE7734692U1 (en)
GB (1) GB1595088A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3022732A1 (en) * 1979-06-20 1981-01-15 Asahi Optical Co Ltd ZOOM LENS FOR A COPYING SYSTEM
JPS5767909A (en) * 1980-10-15 1982-04-24 Canon Inc Variable magnification optical system
DE3544148A1 (en) * 1984-12-13 1986-06-26 Asahi Kogaku Kogyo K.K., Tokio/Tokyo LENS FOR COPYING WITH VARIABLE IMAGE SIZE

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5961814A (en) * 1982-09-30 1984-04-09 Fuji Photo Optical Co Ltd Zoom lens system of conjugate distance
JPS59117722U (en) * 1983-01-28 1984-08-08 昭和アルミニウム株式会社 Assembly roof frame
JPS59158843A (en) * 1983-02-24 1984-09-08 青木　信行 Metal balcony
JP2587669B2 (en) * 1988-01-14 1997-03-05 富士写真光機株式会社 Variable magnification lens system for copying

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4727015U (en) * 1971-02-16 1972-11-27
JPS5074128U (en) * 1973-11-06 1975-06-28
JPS5027792Y1 (en) * 1970-03-19 1975-08-18
JPS5029845Y1 (en) * 1970-08-17 1975-09-02

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5072730A (en) * 1973-10-31 1975-06-16
JPS519938A (en) * 1974-07-12 1976-01-27 Hitachi Chemical Co Ltd

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5027792Y1 (en) * 1970-03-19 1975-08-18
JPS5029845Y1 (en) * 1970-08-17 1975-09-02
JPS4727015U (en) * 1971-02-16 1972-11-27
JPS5074128U (en) * 1973-11-06 1975-06-28

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3022732A1 (en) * 1979-06-20 1981-01-15 Asahi Optical Co Ltd ZOOM LENS FOR A COPYING SYSTEM
DE3022732C2 (en) * 1979-06-20 1982-07-01 Asahi Kogaku Kogyo K.K., Tokyo Varifocal lens for copying purposes
JPS5767909A (en) * 1980-10-15 1982-04-24 Canon Inc Variable magnification optical system
DE3544148A1 (en) * 1984-12-13 1986-06-26 Asahi Kogaku Kogyo K.K., Tokio/Tokyo LENS FOR COPYING WITH VARIABLE IMAGE SIZE
DE3544148C2 (en) * 1984-12-13 1991-05-08 Asahi Kogaku Kogyo K.K., Tokio/Tokyo, Jp

Also Published As

Publication number Publication date
GB1595088A (en) 1981-08-05
DE7734692U1 (en) 1978-03-02
DE2750571B2 (en) 1981-06-25
DE2750571A1 (en) 1978-05-24
JPS589401B2 (en) 1983-02-21
DE2750571C3 (en) 1982-03-04

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