GB189812859A - Improved Double Objective for Photographic and the like purposes. - Google Patents
Improved Double Objective for Photographic and the like purposes.Info
- Publication number
- GB189812859A GB189812859A GB189812859DA GB189812859A GB 189812859 A GB189812859 A GB 189812859A GB 189812859D A GB189812859D A GB 189812859DA GB 189812859 A GB189812859 A GB 189812859A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lenses
- photographic
- purposes
- double objective
- composite
- 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
Landscapes
- Lenses (AREA)
Abstract
12,859. Goerz, C. P., and Hoegh, E. von. June 8. Lenses.-Relates to a twolens system for photographic and like purposes. It consists essentially of a simple or composite biconcave lens L', Fig. 1, of low refracting power, and a simple or composite biconvex lens L<2> of high refracting power, these lenses being separated by a layer of air. Of the surfaces of the two lenses facing one another, that belonging to the biconcave lens has the greater curvature. The figures marked on the glass denote the refractive indices. These lenses are spherically, chromatically, and astigmatically corrected. A double objective may be formed by combining together a pair of the single systems.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB189812859T | 1898-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB189812859A true GB189812859A (en) | 1898-08-06 |
Family
ID=32416471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB189812859D Expired GB189812859A (en) | 1898-06-08 | 1898-06-08 | Improved Double Objective for Photographic and the like purposes. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB189812859A (en) |
-
1898
- 1898-06-08 GB GB189812859D patent/GB189812859A/en not_active Expired
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