FR2288323B1 - - Google Patents
Info
- Publication number
- FR2288323B1 FR2288323B1 FR7531913A FR7531913A FR2288323B1 FR 2288323 B1 FR2288323 B1 FR 2288323B1 FR 7531913 A FR7531913 A FR 7531913A FR 7531913 A FR7531913 A FR 7531913A FR 2288323 B1 FR2288323 B1 FR 2288323B1
- Authority
- FR
- France
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
- Hydrogenated Pyridines (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US515766A US3912374A (en) | 1974-10-17 | 1974-10-17 | Six component zoom lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2288323A1 FR2288323A1 (fr) | 1976-05-14 |
| FR2288323B1 true FR2288323B1 (US08197722-20120612-C00042.png) | 1982-03-26 |
Family
ID=24052650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7531913A Granted FR2288323A1 (fr) | 1974-10-17 | 1975-10-17 | Dispositif d'eclairage |
Country Status (7)
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4149774A (en) * | 1977-11-14 | 1979-04-17 | Fuji Photo Optical Co., Ltd. | Zoom lens system |
| JPS5768810A (en) * | 1980-10-18 | 1982-04-27 | Asahi Optical Co Ltd | Variable nagnification lens system for copying |
| JPS62166008A (ja) * | 1986-01-17 | 1987-07-22 | Nippon Steel Corp | 竪形圧延機のロ−ル組替用スピンドル退避装置 |
| US4812021A (en) * | 1987-10-07 | 1989-03-14 | Xerox Corporation | Wide angle zoom lens |
| JP2562636B2 (ja) * | 1987-12-25 | 1996-12-11 | 富士写真光機株式会社 | 複写用変倍レンズ系 |
| CN110941086B (zh) * | 2019-12-19 | 2021-12-28 | 福建福光股份有限公司 | 一种超短型低畸变微光成像光学系统 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5713849B1 (US08197722-20120612-C00042.png) * | 1969-09-08 | 1982-03-19 | ||
| US3687522A (en) * | 1971-02-01 | 1972-08-29 | Ilex Optical Co Inc | Variable magnification lens system for finite conjugate distances |
| US3865470A (en) * | 1973-09-04 | 1975-02-11 | Xerox Corp | Variable magnification lens system |
-
1974
- 1974-10-17 US US515766A patent/US3912374A/en not_active Expired - Lifetime
-
1975
- 1975-09-25 CA CA236,342A patent/CA1041336A/en not_active Expired
- 1975-10-03 GB GB40528/75A patent/GB1519300A/en not_active Expired
- 1975-10-13 JP JP50123168A patent/JPS5944602B2/ja not_active Expired
- 1975-10-13 NL NL7512031A patent/NL7512031A/xx not_active Application Discontinuation
- 1975-10-14 DE DE2546040A patent/DE2546040C2/de not_active Expired
- 1975-10-17 FR FR7531913A patent/FR2288323A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2288323A1 (fr) | 1976-05-14 |
| US3912374A (en) | 1975-10-14 |
| DE2546040C2 (de) | 1984-11-22 |
| DE2546040A1 (de) | 1976-04-22 |
| NL7512031A (nl) | 1976-04-21 |
| JPS5944602B2 (ja) | 1984-10-31 |
| JPS5165649A (US08197722-20120612-C00042.png) | 1976-06-07 |
| GB1519300A (en) | 1978-07-26 |
| CA1041336A (en) | 1978-10-31 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |