GB754701A - Improvements in photographic objectives having two dispersive menisci which are situated between two collective members - Google Patents
Improvements in photographic objectives having two dispersive menisci which are situated between two collective membersInfo
- Publication number
- GB754701A GB754701A GB3749354A GB3749354A GB754701A GB 754701 A GB754701 A GB 754701A GB 3749354 A GB3749354 A GB 3749354A GB 3749354 A GB3749354 A GB 3749354A GB 754701 A GB754701 A GB 754701A
- Authority
- GB
- United Kingdom
- Prior art keywords
- objective
- dispersive
- focal length
- meniscus
- menisci
- 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
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/34—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
754,701. Optical objectives. VEB. C. ZEISS JENA. Dec. 28, 1954, No. 37493/54. Class 97 (1). A photographic objective consists of two simple collective components enclosing two dispersive meniscus components concave to a diaphragm between them, the meniscus to the front of the diaphragm being simpli and the other meniscus a cemented doublet, the focal length of the front collective component being greater than 1.3F and less than 1.6F and the focal length of that part of the objective situ ated behind the diaphragn being greater than 0.75F and less than 0.85F, when F is the focal length of the objective. Numerical data are given for one example of the objective shown.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3749354A GB754701A (en) | 1954-12-28 | 1954-12-28 | Improvements in photographic objectives having two dispersive menisci which are situated between two collective members |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3749354A GB754701A (en) | 1954-12-28 | 1954-12-28 | Improvements in photographic objectives having two dispersive menisci which are situated between two collective members |
Publications (1)
Publication Number | Publication Date |
---|---|
GB754701A true GB754701A (en) | 1956-08-08 |
Family
ID=10396883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3749354A Expired GB754701A (en) | 1954-12-28 | 1954-12-28 | Improvements in photographic objectives having two dispersive menisci which are situated between two collective members |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB754701A (en) |
-
1954
- 1954-12-28 GB GB3749354A patent/GB754701A/en not_active Expired
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