US4134039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-pressure gas discharge light source
Assignee: Egyesuelt Izzolampa es Villamossagi Rt
•
Filing: 1977-04-06
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Granted: 1979-01-09
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Expires: 1997-04-06
Abstract
Abstract A high-pressure gas discharge light source with high light conversion efficiency and color rendering, having a translucent discharge vessel of high melting point material in which electrodes of high melting point material are suspended and containing a filling of an inert gas or a mixture of inert gases, at least one metal halide and optionally one or more metals in the elemental state under cold conditions, wherein the ratio of the metal to the halogen forming the halide is stoichiometric or greater, and the specific wall load factor is between 25 and 200 W/cm 2 and/or the quantity of the halide or halides is 0.01 to 1 mg per centimeter length of the arc.
Inventors
- 👤 Denes Vida
- 👤 Ferenc Nagel
- 👤 Endre Oldal
- 👤 Laszlo Ugrosdy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:51
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/12; H01J61/18
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
81 words
A high-pressure gas discharge light source comprising a translucent discharge vessel of high melting point material in which electrodes of high melting point material are suspended, and containing a filling of inert gas, at least one metal halide, the ratio of the metal to the halogen forming the halide being at least stoichiometric, and the specific wall load factor being between 25-200 W/cm 2 , and wherein the vessel contains at least one metal in its elemental state under cold conditions.
Claim 2
Dependent Claim
81 words
A high-pressure gas discharge light source comprising a translucent discharge vessel of high melting point material in which electrodes of high melting point material are suspended, and containing a filling of inert gas, at least one metal halide, the ratio of the metal to the halogen forming the halide being at least stoichiometric, and the specific wall load factor being between 25-200 W/cm 2 , and wherein the vessel contains at least one metal in its elemental state under cold conditions.
Claim 3
Dependent Claim
20 words
A high-pressure gas discharge light source according to claim 1, wherein the metal present in its elemental state is mercury.
Claim 4
Dependent Claim
26 words
A high-pressure gas discharge light source according to claim 1, wherein the halide-forming metal is one of the elements of column III of the Periodic Table.
Claim 5
Dependent Claim
40 words
A high-pressure gas discharge light source according to claim 1, wherein there is at least one halide-forming metal belonging to column III of the Periodic Table and at least one halide-forming metal belonging to column I of the Periodic Table.
Claim 6
Dependent Claim
26 words
A high-pressure discharge light source according to claim 4, wherein the said halide-forming metal is chosen from the group consisting of dysprosium, holmium, thallium and cesium.
Claim 7
Dependent Claim
26 words
A high-pressure gas discharge light source according to claim 4, wherein the said halide-forming metal is chosen from the group consisting of thallium, indium, and sodium.
Claim 8
Dependent Claim
84 words
A high-pressure gas discharge light source comprising a translucent discharge vessel of high melting point material in which electrodes of high melting point material are suspended and containing a filling of inert gas, at least one metal halide, the ratio of the metal to the halogen forming the halide being at least stoichiometric, and the quantity of each metal halide being 0.01-1 mg per centimeter length of the arc, wherein the vessel contains at least one metal in its elemental state under cold conditions.
Claim 9
Dependent Claim
84 words
A high-pressure gas discharge light source comprising a translucent discharge vessel of high melting point material in which electrodes of high melting point material are suspended and containing a filling of inert gas, at least one metal halide, the ratio of the metal to the halogen forming the halide being at least stoichiometric, and the quantity of each metal halide being 0.01-1 mg per centimeter length of the arc, wherein the vessel contains at least one metal in its elemental state under cold conditions.
Claim 10
Dependent Claim
20 words
A high-pressure gas discharge light source according to claim 7, wherein the metal present in its elemental state is mercury.
Claim 11
Dependent Claim
26 words
A high-pressure gas discharge light source according to claim 7, wherein the halide-forming metal is one of the elements of column III of the Periodic Table.
Claim 12
Dependent Claim
40 words
A high-pressure gas discharge light source according to claim 7, wherein there is at least one halide-forming metal belonging to column III of the Periodic Table and at least one halide-forming metal belonging to column I of the Periodic Table.
Claim 13
Dependent Claim
26 words
A high-pressure discharge light source according to claim 10, wherein the said halide-forming metal is chosen from the group consisting of dysprosium, holmium, thallium and cesium.
Claim 14
Dependent Claim
26 words
A high-pressure gas discharge light source according to claim 7, wherein the said halide-forming metal is chosen from the group consisting of thallium, indium and sodium.
Claim 15
Dependent Claim
96 words
A high-pressure gas discharge light source comprising a translucent discharge vessel of high melting point material in which electrodes of high melting point material are suspended and containing a filling of inert gas, at least one metal halide, the ratio of the metal to the halogen forming the halide being at least stoichiometric, the specific wall load factor being between 25-200 W/cm 2 , and the quantity of each metal halide being 0.01-1 mg per centimeter length of the arc, and wherein the vessel contains at least one metal in its elemental state under cold conditions.
Claim 16
Dependent Claim
96 words
A high-pressure gas discharge light source comprising a translucent discharge vessel of high melting point material in which electrodes of high melting point material are suspended and containing a filling of inert gas, at least one metal halide, the ratio of the metal to the halogen forming the halide being at least stoichiometric, the specific wall load factor being between 25-200 W/cm 2 , and the quantity of each metal halide being 0.01-1 mg per centimeter length of the arc, and wherein the vessel contains at least one metal in its elemental state under cold conditions.
Claim 17
Dependent Claim
20 words
A high-pressure gas discharge light source according to claim 13, wherein the metal present in its elemental state is mercury.
Claim 18
Dependent Claim
26 words
A high-pressure gas discharge light source according to claim 13, wherein the halide-forming metal is one of the elements of column III of the Periodic Table.
Claim 19
Dependent Claim
40 words
A high-pressure gas discharge light source according to claim 13, wherein there is at least one halide-forming metal belonging to column III of the Periodic Table and at least one halide-forming metal belonging to column I of the Periodic Table.
Claim 20
Dependent Claim
26 words
A high-pressure discharge light source according to claim 16, wherein the said halide-forming metal is chosen from the group consisting of dysprosium, holmium, thallium and cesium.
Claim 21
Dependent Claim
26 words
A high-pressure gas discharge light source according to claim 16, wherein the said halide-forming metal is chosen from the group consisting of thallium, indium and sodium.
References Cited (Backward Citations)
US3654506A
Cited
US3842307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-08 | 1982-07-10 | 1983-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-08 | 1986-07-10 | 1987-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-08 | 1990-07-10 | 1991-01-09 | $7700.00 | Window Closed / Lapsed |