NL6610525A - - Google Patents
Info
- Publication number
- NL6610525A NL6610525A NL6610525A NL6610525A NL6610525A NL 6610525 A NL6610525 A NL 6610525A NL 6610525 A NL6610525 A NL 6610525A NL 6610525 A NL6610525 A NL 6610525A NL 6610525 A NL6610525 A NL 6610525A
- Authority
- NL
- Netherlands
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
- G02B15/144—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
- G02B15/1445—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 the first group being negative
- G02B15/144507—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 the first group being negative arranged -++-
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
- Lens Barrels (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB31812/65A GB1109913A (en) | 1965-07-26 | 1965-07-26 | Improvements in or relating to optical objectives of variable equivalent focal length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6610525A true NL6610525A (forum.php) | 1967-01-27 |
Family
ID=10328788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6610525A NL6610525A (forum.php) | 1965-07-26 | 1966-07-26 |
Country Status (5)
| Country | Link |
|---|---|
| CH (1) | CH452219A (forum.php) |
| DE (1) | DE1497560B1 (forum.php) |
| FR (1) | FR1487806A (forum.php) |
| GB (1) | GB1109913A (forum.php) |
| NL (1) | NL6610525A (forum.php) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57138612A (en) * | 1981-02-23 | 1982-08-27 | Nippon Kogaku Kk <Nikon> | Telephotographic zoom lens consisting of four groups |
| JP3088112B2 (ja) * | 1990-10-12 | 2000-09-18 | 旭光学工業株式会社 | ズームレンズ |
| JP3723643B2 (ja) * | 1996-08-12 | 2005-12-07 | ペンタックス株式会社 | 高変倍ズームレンズ系 |
| JPH1054938A (ja) * | 1996-08-12 | 1998-02-24 | Asahi Optical Co Ltd | 大口径非球面ズームレンズ系 |
| JP4208667B2 (ja) | 2002-08-28 | 2009-01-14 | キヤノン株式会社 | ズームレンズおよび撮像装置 |
-
1965
- 1965-07-26 GB GB31812/65A patent/GB1109913A/en not_active Expired
-
1966
- 1966-07-23 DE DE19661497560 patent/DE1497560B1/de active Pending
- 1966-07-26 CH CH1082366A patent/CH452219A/fr unknown
- 1966-07-26 FR FR70939A patent/FR1487806A/fr not_active Expired
- 1966-07-26 NL NL6610525A patent/NL6610525A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1109913A (en) | 1968-04-18 |
| FR1487806A (fr) | 1967-07-07 |
| DE1497560B1 (de) | 1971-05-13 |
| CH452219A (fr) | 1968-05-31 |