CH434789A - Powerful varifocal lens - Google Patents
Powerful varifocal lensInfo
- Publication number
- CH434789A CH434789A CH952466A CH952466A CH434789A CH 434789 A CH434789 A CH 434789A CH 952466 A CH952466 A CH 952466A CH 952466 A CH952466 A CH 952466A CH 434789 A CH434789 A CH 434789A
- Authority
- CH
- Switzerland
- Prior art keywords
- powerful
- varifocal lens
- varifocal
- lens
- powerful varifocal
- Prior art date
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
- G02B15/146—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 more than five groups
- G02B15/1461—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 more than five groups the first group being positive
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DESCH30039A DE1209770B (en) | 1961-07-26 | 1961-07-26 | Powerful varifocal lens |
| DESCH33278A DE1259596B (en) | 1961-07-26 | 1963-05-14 | Powerful varifocal lens |
| DESC037311 | 1965-07-01 | ||
| DESC003039 | 1966-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH434789A true CH434789A (en) | 1967-04-30 |
Family
ID=31721580
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH952466A CH434789A (en) | 1961-07-26 | 1966-06-29 | Powerful varifocal lens |
| CH952366A CH434788A (en) | 1961-07-26 | 1966-06-29 | Powerful varifocal lens |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH952366A CH434788A (en) | 1961-07-26 | 1966-06-29 | Powerful varifocal lens |
Country Status (1)
| Country | Link |
|---|---|
| CH (2) | CH434789A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3469900A (en) * | 1967-10-06 | 1969-09-30 | Bell & Howell Co | Reversed telephoto type lens with internal prisms,and wide-angle attachment therefor |
-
1966
- 1966-06-29 CH CH952466A patent/CH434789A/en unknown
- 1966-06-29 CH CH952366A patent/CH434788A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH434788A (en) | 1967-04-30 |
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