GB566278A - Improvements in or relating to means for the indication of infra-red radiation - Google Patents
Improvements in or relating to means for the indication of infra-red radiationInfo
- Publication number
- GB566278A GB566278A GB1350543A GB1350543A GB566278A GB 566278 A GB566278 A GB 566278A GB 1350543 A GB1350543 A GB 1350543A GB 1350543 A GB1350543 A GB 1350543A GB 566278 A GB566278 A GB 566278A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cadmium
- solution
- infra
- mixture
- red radiation
- 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
- 230000005855 radiation Effects 0.000 title abstract 3
- 239000000463 material Substances 0.000 abstract 4
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 abstract 3
- 150000001875 compounds Chemical class 0.000 abstract 3
- 239000000203 mixture Substances 0.000 abstract 3
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 abstract 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 239000011669 selenium Substances 0.000 abstract 2
- 229910052711 selenium Inorganic materials 0.000 abstract 2
- 239000004793 Polystyrene Substances 0.000 abstract 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 229910052793 cadmium Inorganic materials 0.000 abstract 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 abstract 1
- QCUOBSQYDGUHHT-UHFFFAOYSA-L cadmium sulfate Chemical compound [Cd+2].[O-]S([O-])(=O)=O QCUOBSQYDGUHHT-UHFFFAOYSA-L 0.000 abstract 1
- CJOBVZJTOIVNNF-UHFFFAOYSA-N cadmium sulfide Chemical compound [Cd]=S CJOBVZJTOIVNNF-UHFFFAOYSA-N 0.000 abstract 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 abstract 1
- 238000012505 colouration Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- -1 halide salt Chemical class 0.000 abstract 1
- 150000002736 metal compounds Chemical class 0.000 abstract 1
- 239000010445 mica Substances 0.000 abstract 1
- 229910052618 mica group Inorganic materials 0.000 abstract 1
- 229920002223 polystyrene Polymers 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- 150000004763 sulfides Chemical class 0.000 abstract 1
- 235000010269 sulphur dioxide Nutrition 0.000 abstract 1
- 239000004291 sulphur dioxide Substances 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 1
- 239000011701 zinc Substances 0.000 abstract 1
- UQMZPFKLYHOJDL-UHFFFAOYSA-N zinc;cadmium(2+);disulfide Chemical compound [S-2].[S-2].[Zn+2].[Cd+2] UQMZPFKLYHOJDL-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
566,278. Light-sensitive cells. ROTHSCHILD, S., and CATHODEON, Ltd. June 21, 1943, No. 13505. [Class 40 (iii)] [Also in Group III] The light-sensitive material for a cell for detecting or measuring infra-red radiation by variations of conductivity or electromotive force comprises any one or any mixture of the following compounds, namely sulphides of zinc and cadmium, and cadmium selenide, the selected compound or mixture of compounds having been heated in the presence of a halide salt and a trace of a metal compound in an inert atmosphere up to a temperature of about 1000‹ C. For detecting or measuring the infra-red radiation by variations of dielectric constant, the material selected is zinc-cadmium sulphide or cadmium sulphide. The material may be applied over spaced wire coils wound in double-spiral formation on a mica plate. The material may be mixed with a non-conducting binder such as polystyrene solution. The coated plate 1, Fig. 2, may be enclosed in an evacuated glass bulb 14, and may be heated by a coil 13 to reduce time lag. A suitable cadmium selenide is prepared by passing sulphur dioxide through a warm solution of sodium carbonate to saturation. Red selenium is mixed with this solution until no more dissolves. A solution of pure cadmium sulphate is slowly dripped into the selenium solution until an orange colouration appears. The mixture is boiled for about 20 minutes and then left standing for 2 hours. The precipitate of cadmium selenide then formed is filtered, washed and dried. This process differs from the process described in Specification 522,860, in that a high-pressure oven is not used. Specification 311,662, [Class 40 (iii)], also is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1350543A GB566278A (en) | 1943-06-21 | 1943-06-21 | Improvements in or relating to means for the indication of infra-red radiation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1350543A GB566278A (en) | 1943-06-21 | 1943-06-21 | Improvements in or relating to means for the indication of infra-red radiation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB566278A true GB566278A (en) | 1944-12-20 |
Family
ID=10024192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1350543A Expired GB566278A (en) | 1943-06-21 | 1943-06-21 | Improvements in or relating to means for the indication of infra-red radiation |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB566278A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE956224C (en) * | 1953-04-20 | 1957-01-17 | Rca Corp | Process for the production of photosensitive cadmium compounds |
-
1943
- 1943-06-21 GB GB1350543A patent/GB566278A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE956224C (en) * | 1953-04-20 | 1957-01-17 | Rca Corp | Process for the production of photosensitive cadmium compounds |
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