GB348465A - Improvements in or relating to photography and kinematography - Google Patents
Improvements in or relating to photography and kinematographyInfo
- Publication number
- GB348465A GB348465A GB21883/30A GB2188330A GB348465A GB 348465 A GB348465 A GB 348465A GB 21883/30 A GB21883/30 A GB 21883/30A GB 2188330 A GB2188330 A GB 2188330A GB 348465 A GB348465 A GB 348465A
- Authority
- GB
- United Kingdom
- Prior art keywords
- objective
- focal length
- negative lens
- lenses
- july
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Structure And Mechanism Of Cameras (AREA)
Abstract
348,465. Photographic lenses. SOC. FRANCAISE DE CINEMATOGRAPHIE ET DE PHOTOGRAPHIE FILMS EN COULEURS KELLER-DORIAN and KITROSER, I., 42, Rue d'Enghien, Paris. July 19, 1930, No. 21883. Convention date, July 19, 1929. Drawings to Specification. [Class 97 (i).] A photographic objective is provided with a negative lens or group of lenses placed at a substantial distance in front of the objective to give a wider angle of view and improved definition. The focal length of the negative lens is numerically greater than that of the positive. The arrangement is particularly applicable to natural colour photography or kinematography by the goffered film process, a collimating lens being in this case mounted adjacent the film. In an example given in the Specification the focal length of the negative lens is four times that of the positive objective and the distance between the lenses is twice the focal length of the objective.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR348465X | 1929-07-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB348465A true GB348465A (en) | 1931-05-14 |
Family
ID=8892632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB21883/30A Expired GB348465A (en) | 1929-07-19 | 1930-07-19 | Improvements in or relating to photography and kinematography |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB348465A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2792750A (en) * | 1953-09-10 | 1957-05-21 | Theodore H Nakken | Photographic objective comprising air spaced axially aligned positive and negative lenses |
-
1930
- 1930-07-19 GB GB21883/30A patent/GB348465A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2792750A (en) * | 1953-09-10 | 1957-05-21 | Theodore H Nakken | Photographic objective comprising air spaced axially aligned positive and negative lenses |
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