JPS5173450A - - Google Patents
Info
- Publication number
- JPS5173450A JPS5173450A JP50138600A JP13860075A JPS5173450A JP S5173450 A JPS5173450 A JP S5173450A JP 50138600 A JP50138600 A JP 50138600A JP 13860075 A JP13860075 A JP 13860075A JP S5173450 A JPS5173450 A JP S5173450A
- Authority
- JP
- Japan
- 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
Links
Classifications
-
- 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
- G02B15/145—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 five groups only
- G02B15/1451—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 five groups only the first group being positive
- G02B15/145125—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 five groups only the first group being positive arranged +--++
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT924174A AT337473B (en) | 1974-11-18 | 1974-11-18 | AFOCAL ATTACHMENT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5173450A true JPS5173450A (en) | 1976-06-25 |
Family
ID=3612438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50138600A Pending JPS5173450A (en) | 1974-11-18 | 1975-11-18 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5173450A (en) |
| AT (1) | AT337473B (en) |
| DE (1) | DE2551365A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019138941A (en) * | 2018-02-06 | 2019-08-22 | キヤノン株式会社 | Zoom lens and image capturing device having the same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5424652A (en) * | 1977-07-26 | 1979-02-24 | Canon Inc | Imaging system of zoom lens |
| JPS57135912A (en) * | 1981-02-16 | 1982-08-21 | Asahi Optical Co Ltd | Zoom lens |
-
1974
- 1974-11-18 AT AT924174A patent/AT337473B/en active
-
1975
- 1975-11-15 DE DE19752551365 patent/DE2551365A1/en not_active Withdrawn
- 1975-11-18 JP JP50138600A patent/JPS5173450A/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019138941A (en) * | 2018-02-06 | 2019-08-22 | キヤノン株式会社 | Zoom lens and image capturing device having the same |
| US11067779B2 (en) | 2018-02-06 | 2021-07-20 | Canon Kabushiki Kaisha | Zoom lens and image pickup apparatus including the same |
Also Published As
| Publication number | Publication date |
|---|---|
| ATA924174A (en) | 1976-10-15 |
| AT337473B (en) | 1977-07-11 |
| DE2551365A1 (en) | 1976-05-20 |