GB426233A - Improvements in and relating to the control of light for television purposes and forthe optical recording of sound - Google Patents
Improvements in and relating to the control of light for television purposes and forthe optical recording of soundInfo
- Publication number
- GB426233A GB426233A GB9826/34A GB982634A GB426233A GB 426233 A GB426233 A GB 426233A GB 9826/34 A GB9826/34 A GB 9826/34A GB 982634 A GB982634 A GB 982634A GB 426233 A GB426233 A GB 426233A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light
- crystals
- consist
- relating
- sound
- 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
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
- G02F1/0305—Constructional arrangements
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Color Television Image Signal Generators (AREA)
- Luminescent Compositions (AREA)
Abstract
426,233. Light-valves. SUDDEUTSCHE TELEFON-APPARATE-KABEL-UND DRAHTWERKE AKT.-GES. TEKADE, 33, Nomenstrasse, Nuremberg, Germany. March 29, 1934, No. 9826. Convention date, July 5, 1933. [Class 40 (iii)] In a light-valve using the direct electro-optical doublerefraction of solid crystals, a plurality of small crystals g, ground to the same thickness and provided with thin metallic electrodes, are arranged in parallel in the path of rays from an objective lens b. The electrodes consist of metallic foil placed on a conducting layer of metal provided on the crystals by cathodic disintegration. The arrangement prevents detrimental light from the sides. The prisms of the polariser f and analyser h consist of a number of small crystals. Detrimental ultra-violet rays are eliminated and the colour of the reproduced picture corrected by a filter d. The tube a, in which the parts are mounted, is of insulating pressed material. Specification 422,370 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE426233X | 1933-07-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB426233A true GB426233A (en) | 1935-03-29 |
Family
ID=6477169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9826/34A Expired GB426233A (en) | 1933-07-05 | 1934-03-29 | Improvements in and relating to the control of light for television purposes and forthe optical recording of sound |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB426233A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2135050A (en) * | 1983-02-10 | 1984-08-22 | Hitachi Ltd | Optical electric-field measuring apparatus |
-
1934
- 1934-03-29 GB GB9826/34A patent/GB426233A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2135050A (en) * | 1983-02-10 | 1984-08-22 | Hitachi Ltd | Optical electric-field measuring apparatus |
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