GB191413119A - Improvements relating to Lenses for Photographic, Microscopic, Projection or similar purposes. - Google Patents
Improvements relating to Lenses for Photographic, Microscopic, Projection or similar purposes.Info
- Publication number
- GB191413119A GB191413119A GB191413119DA GB191413119A GB 191413119 A GB191413119 A GB 191413119A GB 191413119D A GB191413119D A GB 191413119DA GB 191413119 A GB191413119 A GB 191413119A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lens
- refractive index
- microscopic
- photographic
- lenses
- 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 -
- G02B9/12—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
13,119. Aldis, H. L. May 28. Lenses.-A lens for photographic, microscopic, projection, or similar purposes comprises a doubleconvex positive lens a of high refractive index (approximately 1À62) cemented to a nearly planoconcave negative lens b of low refractive index (approximately 1À52), a double-concave negative lens c separated from the lens b by a small air space and of a refractive index which may vary considerably (for example from 1À56 to 1À63), and a nearly plano-convex positive lens d of high refractive index (approximately 1À60) spaced a considerable distance from the third lens c. Optical data for the form shown in Fig. 1, and for a slightly modified form, are given.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB191413119T | 1914-05-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB191413119A true GB191413119A (en) | 1915-05-27 |
Family
ID=32584732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB191413119D Expired GB191413119A (en) | 1914-05-28 | 1914-05-28 | Improvements relating to Lenses for Photographic, Microscopic, Projection or similar purposes. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB191413119A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104459942A (en) * | 2014-12-04 | 2015-03-25 | 四川红光汽车机电有限公司 | Image capturing lens with rear diaphragm |
-
1914
- 1914-05-28 GB GB191413119D patent/GB191413119A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104459942A (en) * | 2014-12-04 | 2015-03-25 | 四川红光汽车机电有限公司 | Image capturing lens with rear diaphragm |
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