FR1542937A - Système de lentilles à réduction variable - Google Patents
Système de lentilles à réduction variableInfo
- Publication number
- FR1542937A FR1542937A FR1542937DA FR1542937A FR 1542937 A FR1542937 A FR 1542937A FR 1542937D A FR1542937D A FR 1542937DA FR 1542937 A FR1542937 A FR 1542937A
- Authority
- FR
- France
- Prior art keywords
- lens system
- reduction lens
- variable reduction
- variable
- reduction
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/02—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective
-
- 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
- G02B15/142—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 two groups only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Lenses (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US60015866A | 1966-12-08 | 1966-12-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1542937A true FR1542937A (fr) |
Family
ID=24402531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1542937D Active FR1542937A (fr) | 1966-12-08 | Système de lentilles à réduction variable |
Country Status (6)
Country | Link |
---|---|
CH (1) | CH469277A (fr) |
DE (1) | DE1572700B1 (fr) |
FR (1) | FR1542937A (fr) |
GB (1) | GB1154785A (fr) |
NL (1) | NL6716449A (fr) |
SE (1) | SE320517B (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4240724A (en) * | 1979-10-01 | 1980-12-23 | Polaroid Corporation | Zone focusing optical system |
US4466707A (en) * | 1980-03-21 | 1984-08-21 | Canon Kabushiki Kaisha | Variable magnification lens system |
GB2339619B (en) * | 1998-05-14 | 2002-05-01 | Pilkington Perkin Elmer Ltd | Optical systems |
US6160668A (en) * | 1998-05-14 | 2000-12-12 | Pilkington Pe Limited | Optical systems |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR951536A (fr) * | 1944-06-30 | 1949-10-27 | Kodak Pathe | Perfectionnements aux objectifs photographiques |
DE1087825B (de) * | 1958-07-01 | 1960-08-25 | Zeiss Carl Fa | Photographisches Objektiv |
FR1239950A (fr) * | 1959-05-30 | 1960-09-02 | Meopta Prevov Narodni Podnik | Objectif photographique à grande luminosité |
-
0
- FR FR1542937D patent/FR1542937A/fr active Active
-
1967
- 1967-10-05 GB GB45431/67A patent/GB1154785A/en not_active Expired
- 1967-12-02 DE DE19671572700 patent/DE1572700B1/de not_active Withdrawn
- 1967-12-04 NL NL6716449A patent/NL6716449A/xx unknown
- 1967-12-06 SE SE16748/67A patent/SE320517B/xx unknown
- 1967-12-08 CH CH1726067A patent/CH469277A/de unknown
Also Published As
Publication number | Publication date |
---|---|
NL6716449A (fr) | 1968-06-10 |
SE320517B (fr) | 1970-02-09 |
GB1154785A (en) | 1969-06-11 |
DE1572700B1 (de) | 1971-10-07 |
CH469277A (de) | 1969-02-28 |
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