GB692998A - Gas discharge lamp for recording acoustic vibrations - Google Patents
Gas discharge lamp for recording acoustic vibrationsInfo
- Publication number
- GB692998A GB692998A GB1722/50A GB172250A GB692998A GB 692998 A GB692998 A GB 692998A GB 1722/50 A GB1722/50 A GB 1722/50A GB 172250 A GB172250 A GB 172250A GB 692998 A GB692998 A GB 692998A
- Authority
- GB
- United Kingdom
- Prior art keywords
- jan
- recording
- discharge lamp
- gas discharge
- acoustic vibrations
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
- H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
- H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
- H01J65/046—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field the field being produced by using capacitive means around the vessel
Abstract
692,998. Optical recording apparatus. LEITHAUSER, G. Jan. 23, 1950 [Jan. 31, 1949; Jan. 31, 1949; Jan. 31, 1949], No. 1722/50. Drawings.to Specification. Class 40 (ii) [Also in Group XL(a)] In a system for recording by producing light modulated by sound variations and recording it on a film, a discharge tube is employed having a capillary middle portion forming the light emitting part, enlarged end portions filled with mercury vapour and one or more rare gases, and electrodes arranged on the outside surfaces of the said end portions, the said electrodes being fed with high frequency currents modulated by sound frequencies.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE692998X | 1949-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB692998A true GB692998A (en) | 1953-06-17 |
Family
ID=6603911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1722/50A Expired GB692998A (en) | 1949-01-31 | 1950-01-23 | Gas discharge lamp for recording acoustic vibrations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB692998A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1087422A2 (en) * | 1999-09-24 | 2001-03-28 | Philips Corporate Intellectual Property GmbH | Gas discharge lamp with capacitive coupling structure |
-
1950
- 1950-01-23 GB GB1722/50A patent/GB692998A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1087422A2 (en) * | 1999-09-24 | 2001-03-28 | Philips Corporate Intellectual Property GmbH | Gas discharge lamp with capacitive coupling structure |
| EP1087422A3 (en) * | 1999-09-24 | 2003-11-05 | Philips Intellectual Property & Standards GmbH | Gas discharge lamp with capacitive coupling structure |
| KR100786401B1 (en) * | 1999-09-24 | 2007-12-17 | 코닌클리즈케 필립스 일렉트로닉스 엔.브이. | Gas discharge lamp |
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