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JPS5245940A - Wide angle zoom lens system - Google Patents

Wide angle zoom lens system

Info

Publication number
JPS5245940A
JPS5245940A JP50122133A JP12213375A JPS5245940A JP S5245940 A JPS5245940 A JP S5245940A JP 50122133 A JP50122133 A JP 50122133A JP 12213375 A JP12213375 A JP 12213375A JP S5245940 A JPS5245940 A JP S5245940A
Authority
JP
Japan
Prior art keywords
wide angle
zoom lens
lens system
angle zoom
lenses
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
JP50122133A
Other languages
Japanese (ja)
Inventor
Soichi Nakamura
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.)
Nikon Corp
Nippon Chemical Industrial Co Ltd
Original Assignee
Nippon Chemical Industrial Co Ltd
Nippon Kogaku KK
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 Nippon Chemical Industrial Co Ltd, Nippon Kogaku KK filed Critical Nippon Chemical Industrial Co Ltd
Priority to JP50122133A priority Critical patent/JPS5245940A/en
Priority to GB50897/75A priority patent/GB1523492A/en
Priority to DE2557547A priority patent/DE2557547C3/en
Priority to FR7539887A priority patent/FR2296194A1/en
Publication of JPS5245940A publication Critical patent/JPS5245940A/en
Priority to US05/863,338 priority patent/US4169660A/en
Pending legal-status Critical Current

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  • Lenses (AREA)

Abstract

PURPOSE: To provide a wide angle zoom lens system, in which both a front group of four divergent lenses and a rear group of five convergent lenses are mechanically shifted for magnification and in which the Abbe's number of the first positive lens ismade larger than 42 to compensate the chromatic aberration.
COPYRIGHT: (C)1977,JPO&Japio
JP50122133A 1974-12-28 1975-10-09 Wide angle zoom lens system Pending JPS5245940A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP50122133A JPS5245940A (en) 1975-10-09 1975-10-09 Wide angle zoom lens system
GB50897/75A GB1523492A (en) 1974-12-28 1975-12-11 Zoom lens system
DE2557547A DE2557547C3 (en) 1974-12-28 1975-12-19 Varifocal lens
FR7539887A FR2296194A1 (en) 1974-12-28 1975-12-26 OPTICAL SYSTEM FOR CONTINUOUSLY VARIABLE FOCAL DISTANCE LENS
US05/863,338 US4169660A (en) 1974-12-28 1977-12-20 Wide-angle zoom lens system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50122133A JPS5245940A (en) 1975-10-09 1975-10-09 Wide angle zoom lens system

Publications (1)

Publication Number Publication Date
JPS5245940A true JPS5245940A (en) 1977-04-12

Family

ID=14828422

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50122133A Pending JPS5245940A (en) 1974-12-28 1975-10-09 Wide angle zoom lens system

Country Status (1)

Country Link
JP (1) JPS5245940A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5142561U (en) * 1974-09-25 1976-03-29
JPS53140047A (en) * 1977-05-13 1978-12-06 Asahi Optical Co Ltd Big zoom ratio lens including wide angle lens
JPS5415733A (en) * 1977-06-10 1979-02-05 Asahi Optical Co Ltd Lowwmagnification variableeangleelens system
JPS557712A (en) * 1978-06-30 1980-01-19 Asahi Optical Co Ltd Compact standard zoom lens
JPS5521005A (en) * 1978-07-29 1980-02-14 Konishiroku Photo Ind Co Ltd Wide angle zoom lens
JPS55149914A (en) * 1979-05-10 1980-11-21 Canon Inc Wide angle zoom lens

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS501293A (en) * 1973-05-11 1975-01-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS501293A (en) * 1973-05-11 1975-01-08

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5142561U (en) * 1974-09-25 1976-03-29
JPS56138Y2 (en) * 1974-09-25 1981-01-06
JPS53140047A (en) * 1977-05-13 1978-12-06 Asahi Optical Co Ltd Big zoom ratio lens including wide angle lens
JPS5916248B2 (en) * 1977-05-13 1984-04-14 旭光学工業株式会社 A zoom lens with a large zoom ratio that covers a wide angle
JPS5415733A (en) * 1977-06-10 1979-02-05 Asahi Optical Co Ltd Lowwmagnification variableeangleelens system
JPS5716328B2 (en) * 1977-06-10 1982-04-05
JPS557712A (en) * 1978-06-30 1980-01-19 Asahi Optical Co Ltd Compact standard zoom lens
JPS5833530B2 (en) * 1978-06-30 1983-07-20 旭光学工業株式会社 Compact standard zoom lens
JPS5521005A (en) * 1978-07-29 1980-02-14 Konishiroku Photo Ind Co Ltd Wide angle zoom lens
JPS5713851B2 (en) * 1978-07-29 1982-03-19
JPS55149914A (en) * 1979-05-10 1980-11-21 Canon Inc Wide angle zoom lens
JPS6144284B2 (en) * 1979-05-10 1986-10-02 Canon Kk

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