GB190604523A - Improvements in Photographic Tele-objectives. - Google Patents
Improvements in Photographic Tele-objectives.Info
- Publication number
- GB190604523A GB190604523A GB190604523DA GB190604523A GB 190604523 A GB190604523 A GB 190604523A GB 190604523D A GB190604523D A GB 190604523DA GB 190604523 A GB190604523 A GB 190604523A
- Authority
- GB
- United Kingdom
- Prior art keywords
- corrected
- objectives
- chromatically
- shows
- tele
- 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
4523. Zeiss, C., [Firm of]. May 14, 1905, [date applied for under Patents Act, 1901]. Lenses.-Relates to tele-objectives of a fixed focal length in which, with a view to simplifying the design, the positive and negative elements are each uncorrected for spherical and astigmatic aberrations as in simple lenses. The errors of one system are corrected by those of the other. Fig. 1 shows a simple system of this kind which is spherically and astigmatically corrected but not chromatically. Fig. 3 shows a modification in which each elej-ent is chromatically corrected. Other modifications are shown and the necessary constructional data given in the Specification.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE190604523X | 1905-03-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190604523A true GB190604523A (en) | 1906-07-26 |
Family
ID=32186735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190604523D Expired GB190604523A (en) | 1905-03-14 | 1905-03-14 | Improvements in Photographic Tele-objectives. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190604523A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2576436A (en) * | 1949-10-08 | 1951-11-27 | Perkin Elmer Corp | Telephoto type objective lens |
US2685230A (en) * | 1947-11-06 | 1954-08-03 | Us Sec War | Large aperture telephoto objective |
-
1905
- 1905-03-14 GB GB190604523D patent/GB190604523A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2685230A (en) * | 1947-11-06 | 1954-08-03 | Us Sec War | Large aperture telephoto objective |
US2576436A (en) * | 1949-10-08 | 1951-11-27 | Perkin Elmer Corp | Telephoto type objective lens |
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