JPS52128152A - Highly variable multiplying zoom lens - Google Patents
Highly variable multiplying zoom lensInfo
- Publication number
- JPS52128152A JPS52128152A JP4521276A JP4521276A JPS52128152A JP S52128152 A JPS52128152 A JP S52128152A JP 4521276 A JP4521276 A JP 4521276A JP 4521276 A JP4521276 A JP 4521276A JP S52128152 A JPS52128152 A JP S52128152A
- Authority
- JP
- Japan
- Prior art keywords
- zoom lens
- highly variable
- variable multiplying
- multiplying
- elevate
- 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
Links
Landscapes
- Lenses (AREA)
Abstract
PURPOSE: To elevate the variable multiplication ratio, by means of constituting a focussing lens system which consists of three pieces of positive lenses and one negative lens together with satisfying given conditions thereby making it compact.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP51045212A JPS5832686B2 (en) | 1976-04-20 | 1976-04-20 | High variable power zoom lens |
US05/788,961 US4113356A (en) | 1976-04-20 | 1977-04-19 | Zoom lens system with high zooming ratio |
DE2717565A DE2717565C2 (en) | 1976-04-20 | 1977-04-20 | Varifocal lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP51045212A JPS5832686B2 (en) | 1976-04-20 | 1976-04-20 | High variable power zoom lens |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS52128152A true JPS52128152A (en) | 1977-10-27 |
JPS5832686B2 JPS5832686B2 (en) | 1983-07-14 |
Family
ID=12712952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP51045212A Expired JPS5832686B2 (en) | 1976-04-20 | 1976-04-20 | High variable power zoom lens |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5832686B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5595921A (en) * | 1979-01-12 | 1980-07-21 | Zeiss Stiftung | Photograph lens with continuously variable focal distance |
JPS55111915A (en) * | 1979-02-22 | 1980-08-29 | Canon Inc | Zoom lens |
JPS57135912A (en) * | 1981-02-16 | 1982-08-21 | Asahi Optical Co Ltd | Zoom lens |
JPS62172312A (en) * | 1986-01-24 | 1987-07-29 | Matsushita Electric Ind Co Ltd | Automatic focus adjusting device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3707324A (en) * | 1970-07-01 | 1972-12-26 | Schneider Co Optische Werke | High-speed varifocal objective system with five-lens basic objective |
JPS5040144A (en) * | 1973-08-17 | 1975-04-12 |
-
1976
- 1976-04-20 JP JP51045212A patent/JPS5832686B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3707324A (en) * | 1970-07-01 | 1972-12-26 | Schneider Co Optische Werke | High-speed varifocal objective system with five-lens basic objective |
JPS5040144A (en) * | 1973-08-17 | 1975-04-12 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5595921A (en) * | 1979-01-12 | 1980-07-21 | Zeiss Stiftung | Photograph lens with continuously variable focal distance |
JPS55111915A (en) * | 1979-02-22 | 1980-08-29 | Canon Inc | Zoom lens |
JPS6144289B2 (en) * | 1979-02-22 | 1986-10-02 | Canon Kk | |
JPS57135912A (en) * | 1981-02-16 | 1982-08-21 | Asahi Optical Co Ltd | Zoom lens |
JPS6229768B2 (en) * | 1981-02-16 | 1987-06-29 | Asahi Optical Co Ltd | |
JPS62172312A (en) * | 1986-01-24 | 1987-07-29 | Matsushita Electric Ind Co Ltd | Automatic focus adjusting device |
Also Published As
Publication number | Publication date |
---|---|
JPS5832686B2 (en) | 1983-07-14 |
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