GB467995A - Improvements in or relating to television and like reproducing apparatus - Google Patents
Improvements in or relating to television and like reproducing apparatusInfo
- Publication number
- GB467995A GB467995A GB3586535A GB3586535A GB467995A GB 467995 A GB467995 A GB 467995A GB 3586535 A GB3586535 A GB 3586535A GB 3586535 A GB3586535 A GB 3586535A GB 467995 A GB467995 A GB 467995A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lens
- tube
- curvature
- end wall
- television
- 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
- 239000000463 material Substances 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 239000011343 solid material Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Lenses (AREA)
Abstract
467,995. Optical systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and LEVIN, N. Dec. 27, 1935, No. 35865. [Class 97 (i)] [Also in Group XL] An elongated lens 2 of solid material has one end 2a in contact with a cathode ray tube, the surface 2a having the same curvature as the end wall of the tube, while the other end has a greater curvature and is preferably hemispherical. The tube may have a convex end wall. The lens may have one or more grooves 4 to prevent internal reflections and may have a diameter larger than the picture area on the fluorescent screen. The lens preferably has a length L=r (Á - 1) /Á, where r is the radius of curvature of the surface 2b, and Á is the refractive index of the lens material. Specification 417,435 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3586535A GB467995A (en) | 1935-12-27 | 1935-12-27 | Improvements in or relating to television and like reproducing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3586535A GB467995A (en) | 1935-12-27 | 1935-12-27 | Improvements in or relating to television and like reproducing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB467995A true GB467995A (en) | 1937-06-28 |
Family
ID=10382399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3586535A Expired GB467995A (en) | 1935-12-27 | 1935-12-27 | Improvements in or relating to television and like reproducing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB467995A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2531956A (en) * | 1945-08-29 | 1950-11-28 | Waldorf Adrian | Optical lens system |
| US2736235A (en) * | 1956-02-28 | Optical lens systems | ||
| US2883763A (en) * | 1956-09-28 | 1959-04-28 | Otto F Schaper | Carrier landing trainer |
-
1935
- 1935-12-27 GB GB3586535A patent/GB467995A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2736235A (en) * | 1956-02-28 | Optical lens systems | ||
| US2531956A (en) * | 1945-08-29 | 1950-11-28 | Waldorf Adrian | Optical lens system |
| US2883763A (en) * | 1956-09-28 | 1959-04-28 | Otto F Schaper | Carrier landing trainer |
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