US3825792A - Novel discharge lamp and coating - Google Patents
Novel discharge lamp and coating Download PDFInfo
- Publication number
- US3825792A US3825792A US00376254A US37625473A US3825792A US 3825792 A US3825792 A US 3825792A US 00376254 A US00376254 A US 00376254A US 37625473 A US37625473 A US 37625473A US 3825792 A US3825792 A US 3825792A
- Authority
- US
- United States
- Prior art keywords
- phosphor
- lamp
- coating
- color
- discharge lamp
- 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 - Lifetime
Links
- 238000000576 coating method Methods 0.000 title abstract description 32
- 239000011248 coating agent Substances 0.000 title abstract description 28
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000000203 mixture Substances 0.000 claims abstract description 31
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 15
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 15
- GNZXSJGLMFKMCU-UHFFFAOYSA-N [Mg+2].[O-][Ge](F)=O.[O-][Ge](F)=O Chemical compound [Mg+2].[O-][Ge](F)=O.[O-][Ge](F)=O GNZXSJGLMFKMCU-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052748 manganese Inorganic materials 0.000 claims description 8
- 239000011572 manganese Substances 0.000 claims description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 31
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract description 21
- 229910052753 mercury Inorganic materials 0.000 abstract description 19
- 239000000377 silicon dioxide Substances 0.000 abstract description 15
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 14
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract description 12
- TUNFSRHWOTWDNC-UHFFFAOYSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCCC(O)=O TUNFSRHWOTWDNC-UHFFFAOYSA-N 0.000 abstract description 9
- QWVYNEUUYROOSZ-UHFFFAOYSA-N trioxido(oxo)vanadium;yttrium(3+) Chemical compound [Y+3].[O-][V]([O-])([O-])=O QWVYNEUUYROOSZ-UHFFFAOYSA-N 0.000 abstract description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000395 magnesium oxide Substances 0.000 abstract description 6
- 239000010410 layer Substances 0.000 description 11
- 239000002245 particle Substances 0.000 description 7
- 229910052693 Europium Inorganic materials 0.000 description 6
- 230000002596 correlated effect Effects 0.000 description 6
- LSGOVYNHVSXFFJ-UHFFFAOYSA-N vanadate(3-) Chemical compound [O-][V]([O-])([O-])=O LSGOVYNHVSXFFJ-UHFFFAOYSA-N 0.000 description 5
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 4
- 239000004922 lacquer Substances 0.000 description 4
- -1 manganese-activated phosphor Chemical class 0.000 description 4
- 238000009877 rendering Methods 0.000 description 4
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 3
- 239000000020 Nitrocellulose Substances 0.000 description 3
- 229940043232 butyl acetate Drugs 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000000295 emission spectrum Methods 0.000 description 3
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920001220 nitrocellulos Polymers 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 241001529468 Phoca fasciata Species 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000001429 visible spectrum Methods 0.000 description 2
- 241000283216 Phocidae Species 0.000 description 1
- OSTULDXPMCGEOM-UHFFFAOYSA-N [O-][Ge](F)=O.[O-][Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.[Mg+2].P Chemical compound [O-][Ge](F)=O.[O-][Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.[Mg+2].P OSTULDXPMCGEOM-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004737 colorimetric analysis Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910000164 yttrium(III) phosphate Inorganic materials 0.000 description 1
- UXBZSSBXGPYSIL-UHFFFAOYSA-K yttrium(iii) phosphate Chemical compound [Y+3].[O-]P([O-])([O-])=O UXBZSSBXGPYSIL-UHFFFAOYSA-K 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
- C09K11/7794—Vanadates; Chromates; Molybdates; Tungstates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/66—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing germanium, tin or lead
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/74—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing arsenic, antimony or bismuth
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
- C09K11/7795—Phosphates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
Definitions
- ABSTRACT A color corrected discharge lamp combination providing an emission with a very desirable color similar to that of an incandescent lamp, but maintainingthe efficiency and long life advantages of a discharge lamp.
- the lamp is similar to a normal high-pressure mercury discharge lamp, but also contains a non-luminescent coating of. silica, titania, magnesia or alumina or mixtures thereof on the interior surface of the outer envelope to provide a color-shift and a phosphor mixture coated over the non-luminescent coating.
- the phosphor mixture substantially comprises 70-90 percent by weight of yttrium vanadate phosphor or yttrium phosphate-vanadate phosphor and 10:30 percent by weight of magnesium fluoro-germanate or magnesium arsenate.
- the black body line In order to maintain a'reasonable life of an incandescent bulb, such are generally run at less than 3,100K and typically at about 2,900I(.
- the ICI color system is described in detail in the -Handbook of Colorimetry, by Arthur C. Hardy,'The
- U.S. Pat. No. 2,748,303 issued to Thorington on May 29, 1956 disclosed the use of magnesium fluorogermanate phosphor (activated with manganese with a valence of 4 plus). Lamps of this type have been widely used and typicallyprovide a correlated color tempera: ture of about 4,100K. Kelvin with a color rendition index of about43.
- U.S. Pat. No. 2,615,848 issued to Wells on- Oct. 28, 1952 disclosed a high-pressure mercury lamp using a magnesium arsenate phosphor (also activated with manganese with a valence of 4 plus).
- the magnesium arsenate lamps provide lightof a quality similar to that of themagnesium fluorogermanate coated lamps.
- U.S. Pat. No. 3,569,762 issued to Levine et al on .Mar. 9, 1971 discloses a high-pressure mercury discharge lamp with an yttrium vanadate phosphor (activated with europium with a valence of 3 plus). Such lamps typically have a correlated .color temperature of about 3,600K and a color rendering index of about 47.
- the radiation from'a'nincandescent filament' is' wellknown.
- The. emission is dependent upon' the tempera--
- One method which has been used to lower the correlated color temperature is to use a very-thick coating of phosphor.
- Silica layers have been used in high pressure mercury vapor lamps.
- U.S. Pat. No; 2,838,705 issued to Hierholzer et al. on June 10, 1958 a silica layer is used between the phosphor and -a silverized'reflector to prevent chemical reactions between the phosphor and the reflector.
- Silica has also been mixed-with phosphors.
- silica is mixed with the phosphor, such that less phosphor is required and the cost of the lamp reduced. (silica being less expensive than the phosphor).
- a color corrected highpressure mercury discharge lamp combinationwith an' emission having a color very similar to that of an incandescent lamp, but with the efficiency and long life of a discharge lamp can be obtained using non-luminescent oxide coating of silica, magnesia, titania or alumina (or mixtures thereof) on .the interior surface of the outer envelope with one of certain phosphor mixtures coated over the non-luminescent oxide coating.
- the phosphor mixtures use a manganese-activated phosphor and a europium-activated phosphor, the manganeseactivated phosphor being at least one of magnesium fluorogermanate and magnesium arsenate, and the europium-activated phosphor being at least one of yttrium phosphate vanadate and yttrium vanadate.
- the mixture uses about 83 percent by weight of europiumactivated phosphor to 17 percent by weight of manganese-activated phosphor.
- the combination achieves .a'correlated color temperature of about-3,000K with a color rendering index of about'60.
- FIG. 1 is a side elevational view of a discharge lamp constructed in accordance with the present invention, with part of the outer envelope and are tube broken away;
- FIG. 2 illustrates the x,y-chromaticity diagram of the ICI system showing the x,y coordinance of the emissions of various lamps
- FIG. 3 shows the emission spectrum of the lampof the instant invention, with relative energy plotted against wavelength in nanometers.
- FIG. 1 there is shown the general arrangement of a high-pressure mercury discharge lamp within which the non-luminescent oxide coating and the phosphor mixture coating of the present invention are utilized.
- the lamp generally designated 10, includes an outer light-transmitting envelope 12 which is sealed to a standard mogul base 14. Mounted within the outer envelope 12 and spaced therefrom is an arc tube 16. The are tube 16 is mounted within the outer envelope 12 by conventional frame 18 and a pair of straps 20. Sealed within the arc tube 16 disposed at opposite ends thereof is a pair of tungsten operating electrodes 22 and 24. The electrodes 22 and 24 are sealed to opposite ends of the arc tube 16 by a conventional ribbon seal 26. A starting electrode 28 is also sealed to the arc tube adjacent to electrode 24 by means of ribbon seal 26.
- the frame 18 is carried by one of a pair of conventional lead-in conductors 30 which extend through a conventional reentrance stem press 32 connected to mogul base 14, which in turn'is connected to a conventional power source 34 in the well-known manner.
- the electrodes 22, 24 and 28 are electrically connected to one or the other of the lead-in conductors 30.
- a starting resistor 36 is connected between one of the lead-in conductors 30 and the starting electrode 28 to the frame 18.
- a charge of mercury 38 is contained within the arc tube 16 and this predetermined amount of mercury will, when fully vaporized during normal operation of the lamp provide a predetermined pressure therein.
- the are tube also contains a small charge of an inert ionizable starting gas.
- the non-luminescent oxide coating 40 is'disposed directly on the interior surface of the outer envelope 12.
- the phosphor mixture 42 is coated over the nonluminescent oxide coating 40 and thus the two layers are provided with the phosphor-mixture layer 42 being on the inside closer to the arc tube and the nonluminescent oxide layer being on the outside and directly on the interior surface of the outer envelope.
- the lamp configuration (other than the nonluminescent oxide and particular phosphor coatings) is essentially conventional and a more detailed description of its operation may be found in the aforemen-' tioned U.S. Pat. No. 2,7,48,303.
- the non-luminescent oxide coating 40 will be from about 0.2 to 2 milligrams (mg) per square centimeter (and typically about 0.5-0.9 mg per square centimeter).
- the coating of the phosphor mixture 42 will be from about l-8 mg of phosphor per square centimeter of coated area (and preferably about 2.4-2.8 mg per square centimeter).
- the particle size of the non-luminescent oxide coating 42 must be principally of submicron size (it must be principally comprised of particles having an average diameter of less than one micron). It has been found, for example, that silica particles having a 0.025 micron average size (such as Pittsburgh Plate Glasss I-IiSil) provide a satisfactory coating. It has been found that theparticle size is critical and experiments with, for example, titania of a particle size generally greater than 2 microns showed that the desired color shift was not obtained.
- FIG. 2 shows the relative emissions of various lamps and also the black body line.
- Point A represents the emission of a clear (without any phosphor coating) high-pressure mercury lamp.
- Point B represents the,
- Point C represents the emission of a yttrium phosphate-vanadate lamp.
- Point D represents the emission of the lamp of the instant invention and
- Point E represents the emission of a typical incandescent lamp.
- the line FG is the black body line. The filament temperatures for various points along the black body line'are as indicated.
- the emission of the magnesium arsenate lamp is similar to that of the magnesium fluorogermanate lamp and the emission of the yttrium vanadate is similar to that of the yttrium phosphate-vanadate lamp.
- Emissions along the line AC can be obtained by using thinner layers of yttrium vanadate phosphor, and emissions along the line AB can be obtained by using thinner coatingsof a vanadate phosphor.
- Emissions along the line BC can be obtained by a normal coating thickness with a mixture-of vanadate and fluorogermanate phosphors.
- points in the triangle ABC can be achieved by thinner layers of mixtures of these phosphors. Points beyond B along the extension of line AB could'be obtained by a thicker coating of vanadate phosphor, but such thick coatings severely reduce luminous efficiency and, because of the cost of the phosphors, significantly raise the cost of the lamp.
- an approximately normal thickness of an appropriate mixture of phosphor produces an emission, not inside triangle ABC, but at point D when the appropriate layer of non-luminescent oxide is included.
- the relatively inexpensive layer of non-luminescent oxide such as silica deposited on the interior surface of the outer envelope (between the phosphor mixture and the outer envelope) provides a significant shift in the color of the emission.
- An emission with a color temperature of about 3,000I( in close-proximity to the black body line can be obtained using normal phosphor thicknesses.
- a coating'of silica can be done, for example, by mixing approximately 39 grams of submicron size silica, together with 170 milliliters of nitrocellulose lacquer and 85 milliliters of butylacetate solvent. Thisslurry is milled for about 3 /2 hours and then coated on the bulb. The bulb is then lehred to remove the lacquer binder. After lehring of the silica coating, the phosphor mixture is applied.
- a first slurry is prepared by mixing 1,200 grams of yttrium phosphate-vanadate or yttrium vanadate phosphor (preferably yttrium phosphatevanadate) with 775 milliliters of butylacetate solvent and 825 milliliters of nitrocellulose lacquer.
- a second slurry is prepared by mixing 1,200 grams of magnesium fluorogermanate or magnesium arsenate (preferably magnesium fluorogermanate) with 1,475 milliliters of nitrocellulose lacquer and 600 milliliters of butylacetate solvent. After milling, two slurrie's can be mixed together to a ratio of 1 part by volume of magnesiumfluorogermanate to 4 parts of yttrium phosphatevanadate and coated on the bulb. The coated bulb is then lehred again to remove the binder.
- the phosphor mixture which results from this coating process is the preferred'mixture and consists essentially of about 17 percent by weight yttrium phosphate-vanadate and about 83 percent by weight of magnesium fluorogermanate.
- Magnesia, titania and alumina or mixtures thereof can 'be substituted in whole or in part for the silica in the preceding examples in approximately the same proportions.
- Alumina is especially convenient as it does not readily absorb moisture (as compared to magnesia or silica) and is readily obtained in submicron size particles (as compared to titania which is generally available only in particle sizes too large for this application).
- FIG. 3 illustrates the emission spectrum of a lamp of the instant invention.
- a lamp of the instant invention has enough emission in the 600-700 manometer region to provide enough red to give an incandescent color, but has very little emission in the infrared region (above approximately 700 manometers).
- the incandescent lamp emits-most of its energy in the infrared region, and this energy is generally wasted (and any attempt to get more of the energy in the visible region by raising the filament temperature will, of course, result in further shortening the already relatively short life of the incandescent lamp).
- the lamp of the instant invention provides the color of the incandescent lamp, without the low efficiency and short life of the incandescent lamp.
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Luminescent Compositions (AREA)
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00376254A US3825792A (en) | 1973-07-03 | 1973-07-03 | Novel discharge lamp and coating |
IN1264/CAL/74A IN143187B (xx) | 1973-07-03 | 1974-06-11 | |
CA202,604A CA993493A (en) | 1973-07-03 | 1974-06-17 | Discharge lamp and coating |
DE2431128A DE2431128C2 (de) | 1973-07-03 | 1974-06-28 | Quecksilberdampf-Hochdrucklampe |
BE1006055A BE817145A (fr) | 1973-07-03 | 1974-07-02 | Lampes a decharge |
GB2925174A GB1466588A (en) | 1973-07-03 | 1974-07-02 | High pressure mercury vapour discharge lamps |
JP7548174A JPS5329952B2 (xx) | 1973-07-03 | 1974-07-03 | |
MY60/78A MY7800060A (en) | 1973-07-03 | 1978-12-30 | High pressure mercury vapour discharge lamps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00376254A US3825792A (en) | 1973-07-03 | 1973-07-03 | Novel discharge lamp and coating |
Publications (1)
Publication Number | Publication Date |
---|---|
US3825792A true US3825792A (en) | 1974-07-23 |
Family
ID=23484270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00376254A Expired - Lifetime US3825792A (en) | 1973-07-03 | 1973-07-03 | Novel discharge lamp and coating |
Country Status (8)
Country | Link |
---|---|
US (1) | US3825792A (xx) |
JP (1) | JPS5329952B2 (xx) |
BE (1) | BE817145A (xx) |
CA (1) | CA993493A (xx) |
DE (1) | DE2431128C2 (xx) |
GB (1) | GB1466588A (xx) |
IN (1) | IN143187B (xx) |
MY (1) | MY7800060A (xx) |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4005328A (en) * | 1973-12-03 | 1977-01-25 | U.S. Philips Corporation | Mercury vapor discharge lamp for use in color copying by means of electrophotographic processes |
US4029983A (en) * | 1976-03-25 | 1977-06-14 | Westinghouse Electric Corporation | Metal-halide discharge lamp having a light output with incandescent characteristics |
US4055781A (en) * | 1974-09-09 | 1977-10-25 | Gte Sylvania Incorporated | Special purpose fluorescent lamp |
US4065688A (en) * | 1977-03-28 | 1977-12-27 | Westinghouse Electric Corporation | High-pressure mercury-vapor discharge lamp having a light output with incandescent characteristics |
FR2451101A1 (fr) * | 1979-03-07 | 1980-10-03 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Lampe a decharge a vapeur de mercure a basse pression |
FR2459550A1 (fr) * | 1979-06-20 | 1981-01-09 | Gte Prod Corp | Lampe a decharge en arc a haute temperature de couleur |
WO1984000693A1 (en) * | 1982-08-09 | 1984-03-01 | Michael Schonberg | Method for improving animal husbandry |
US4439711A (en) * | 1978-12-28 | 1984-03-27 | Mitsubishi Denki Kabushiki Kaisha | Metal vapor discharge lamp |
US4625728A (en) * | 1982-08-09 | 1986-12-02 | Michael Schonberg | Improving poultry egg production |
US4736136A (en) * | 1986-06-16 | 1988-04-05 | Gte Laboratories Incorporated | Discharge lamps with coated ceramic arc tubes and fabrication thereof |
EP0295140A2 (en) * | 1987-06-12 | 1988-12-14 | Gte Products Corporation | Fluorescent lamp with a predetermined cri and method for making |
US4914346A (en) * | 1983-03-04 | 1990-04-03 | Gte Products Corporation | Lamp envelope having a luminescent material on the interior surface thereof, method of applying said material, and material to be applied |
US4923425A (en) * | 1987-06-12 | 1990-05-08 | Gte Products Corporation | Fluorescent lamp with a predetermined CRI and method for making |
US20080258601A1 (en) * | 2005-04-14 | 2008-10-23 | Koninklijke Philips Electronics, N.V. | Device for Generating Uvc Radiation |
US20100019642A1 (en) * | 2005-09-14 | 2010-01-28 | General Electric Company | Gas-filled shroud to provide cooler arctube |
US8128249B2 (en) | 2007-08-28 | 2012-03-06 | Qd Vision, Inc. | Apparatus for selectively backlighting a material |
US8405063B2 (en) | 2007-07-23 | 2013-03-26 | Qd Vision, Inc. | Quantum dot light enhancement substrate and lighting device including same |
US8642977B2 (en) | 2006-03-07 | 2014-02-04 | Qd Vision, Inc. | Article including semiconductor nanocrystals |
US8718437B2 (en) | 2006-03-07 | 2014-05-06 | Qd Vision, Inc. | Compositions, optical component, system including an optical component, devices, and other products |
US8836212B2 (en) | 2007-01-11 | 2014-09-16 | Qd Vision, Inc. | Light emissive printed article printed with quantum dot ink |
US9874674B2 (en) | 2006-03-07 | 2018-01-23 | Samsung Electronics Co., Ltd. | Compositions, optical component, system including an optical component, devices, and other products |
US9929325B2 (en) | 2012-06-05 | 2018-03-27 | Samsung Electronics Co., Ltd. | Lighting device including quantum dots |
US9951438B2 (en) | 2006-03-07 | 2018-04-24 | Samsung Electronics Co., Ltd. | Compositions, optical component, system including an optical component, devices, and other products |
US11472979B2 (en) | 2007-06-25 | 2022-10-18 | Samsung Electronics Co., Ltd. | Compositions and methods including depositing nanomaterial |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS582213Y2 (ja) * | 1977-03-25 | 1983-01-14 | 三菱農機株式会社 | 脱穀機における穀稈搬送装置 |
JPS54133769A (en) * | 1978-04-07 | 1979-10-17 | Japan Storage Battery Co Ltd | High voltage mercury fluorescent lamp |
JPS57115861U (xx) * | 1981-01-11 | 1982-07-17 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2714095A (en) * | 1953-02-03 | 1955-07-26 | Tokyo Shibaura Electric Co | Magnesium boroarsenate phosphor |
US2838705A (en) * | 1953-12-03 | 1958-06-10 | Westinghouse Electric Corp | Color-corrected reflector high pressure mercury vapor lamp and method of preparing |
US3417027A (en) * | 1965-02-13 | 1968-12-17 | Philips Corp | Europium activated yttrium and gadolinium vanadate-phosphate and vanadate-arsenate phosphors |
US3571648A (en) * | 1967-12-29 | 1971-03-23 | Tokyo Shibaura Electric Co | Extra high output and high output fluorescent lamps |
US3670193A (en) * | 1970-05-14 | 1972-06-13 | Duro Test Corp | Electric lamps producing energy in the visible and ultra-violet ranges |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2748303A (en) * | 1949-11-10 | 1956-05-29 | Westinghouse Electric Corp | Color-corrected light source and phosphors therefor |
US2615848A (en) * | 1950-11-08 | 1952-10-28 | Gen Electric | Method of producing magnesium arsenate phosphor activated by manganese |
BE533801A (xx) * | 1953-12-03 | |||
BE559838A (xx) * | 1957-01-12 | |||
US3569762A (en) * | 1964-07-01 | 1971-03-09 | Gen Telephone & Elect | Electron discharge lamps with rare earth phosphor coating |
US3661791A (en) * | 1970-01-16 | 1972-05-09 | Westinghouse Electric Corp | Method of preparing rare earth metal phosphate vanadate luminescent compositions having acicular crystal habit |
DE2113240A1 (de) * | 1970-05-27 | 1971-12-09 | Egyesuelt Izzolampa | Verfahren zur Verbesserung der Haftung von Leuchtstoffen |
-
1973
- 1973-07-03 US US00376254A patent/US3825792A/en not_active Expired - Lifetime
-
1974
- 1974-06-11 IN IN1264/CAL/74A patent/IN143187B/en unknown
- 1974-06-17 CA CA202,604A patent/CA993493A/en not_active Expired
- 1974-06-28 DE DE2431128A patent/DE2431128C2/de not_active Expired
- 1974-07-02 BE BE1006055A patent/BE817145A/xx not_active IP Right Cessation
- 1974-07-02 GB GB2925174A patent/GB1466588A/en not_active Expired
- 1974-07-03 JP JP7548174A patent/JPS5329952B2/ja not_active Expired
-
1978
- 1978-12-30 MY MY60/78A patent/MY7800060A/xx unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2714095A (en) * | 1953-02-03 | 1955-07-26 | Tokyo Shibaura Electric Co | Magnesium boroarsenate phosphor |
US2838705A (en) * | 1953-12-03 | 1958-06-10 | Westinghouse Electric Corp | Color-corrected reflector high pressure mercury vapor lamp and method of preparing |
US3417027A (en) * | 1965-02-13 | 1968-12-17 | Philips Corp | Europium activated yttrium and gadolinium vanadate-phosphate and vanadate-arsenate phosphors |
US3571648A (en) * | 1967-12-29 | 1971-03-23 | Tokyo Shibaura Electric Co | Extra high output and high output fluorescent lamps |
US3670193A (en) * | 1970-05-14 | 1972-06-13 | Duro Test Corp | Electric lamps producing energy in the visible and ultra-violet ranges |
Cited By (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4005328A (en) * | 1973-12-03 | 1977-01-25 | U.S. Philips Corporation | Mercury vapor discharge lamp for use in color copying by means of electrophotographic processes |
US4055781A (en) * | 1974-09-09 | 1977-10-25 | Gte Sylvania Incorporated | Special purpose fluorescent lamp |
US4029983A (en) * | 1976-03-25 | 1977-06-14 | Westinghouse Electric Corporation | Metal-halide discharge lamp having a light output with incandescent characteristics |
US4065688A (en) * | 1977-03-28 | 1977-12-27 | Westinghouse Electric Corporation | High-pressure mercury-vapor discharge lamp having a light output with incandescent characteristics |
US4439711A (en) * | 1978-12-28 | 1984-03-27 | Mitsubishi Denki Kabushiki Kaisha | Metal vapor discharge lamp |
FR2451101A1 (fr) * | 1979-03-07 | 1980-10-03 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Lampe a decharge a vapeur de mercure a basse pression |
DE3022847A1 (de) * | 1979-06-20 | 1981-01-22 | Gte Prod Corp | Warmfarbige bogenentladungslampe |
FR2459550A1 (fr) * | 1979-06-20 | 1981-01-09 | Gte Prod Corp | Lampe a decharge en arc a haute temperature de couleur |
WO1984000693A1 (en) * | 1982-08-09 | 1984-03-01 | Michael Schonberg | Method for improving animal husbandry |
US4625728A (en) * | 1982-08-09 | 1986-12-02 | Michael Schonberg | Improving poultry egg production |
US4765337A (en) * | 1982-08-09 | 1988-08-23 | Edward B. Hunter | Method of improving egg production in poultry hens |
US4914346A (en) * | 1983-03-04 | 1990-04-03 | Gte Products Corporation | Lamp envelope having a luminescent material on the interior surface thereof, method of applying said material, and material to be applied |
US4736136A (en) * | 1986-06-16 | 1988-04-05 | Gte Laboratories Incorporated | Discharge lamps with coated ceramic arc tubes and fabrication thereof |
EP0295140A2 (en) * | 1987-06-12 | 1988-12-14 | Gte Products Corporation | Fluorescent lamp with a predetermined cri and method for making |
US4923425A (en) * | 1987-06-12 | 1990-05-08 | Gte Products Corporation | Fluorescent lamp with a predetermined CRI and method for making |
EP0295140A3 (en) * | 1987-06-12 | 1991-01-02 | Gte Products Corporation | Fluorescent lamp with a predetermined cri and method for making |
US20080258601A1 (en) * | 2005-04-14 | 2008-10-23 | Koninklijke Philips Electronics, N.V. | Device for Generating Uvc Radiation |
US7808170B2 (en) * | 2005-04-14 | 2010-10-05 | Koninklijke Philips Electronics, N.V. | Device for generating UVC radiation |
US8049425B2 (en) * | 2005-09-14 | 2011-11-01 | General Electric Company | Gas-filled shroud to provide cooler arctube |
US20100019642A1 (en) * | 2005-09-14 | 2010-01-28 | General Electric Company | Gas-filled shroud to provide cooler arctube |
US9874674B2 (en) | 2006-03-07 | 2018-01-23 | Samsung Electronics Co., Ltd. | Compositions, optical component, system including an optical component, devices, and other products |
US8642977B2 (en) | 2006-03-07 | 2014-02-04 | Qd Vision, Inc. | Article including semiconductor nanocrystals |
US8718437B2 (en) | 2006-03-07 | 2014-05-06 | Qd Vision, Inc. | Compositions, optical component, system including an optical component, devices, and other products |
US10393940B2 (en) | 2006-03-07 | 2019-08-27 | Samsung Electronics Co., Ltd. | Compositions, optical component, system including an optical component, devices, and other products |
US9951438B2 (en) | 2006-03-07 | 2018-04-24 | Samsung Electronics Co., Ltd. | Compositions, optical component, system including an optical component, devices, and other products |
US8836212B2 (en) | 2007-01-11 | 2014-09-16 | Qd Vision, Inc. | Light emissive printed article printed with quantum dot ink |
US11866598B2 (en) | 2007-06-25 | 2024-01-09 | Samsung Electronics Co., Ltd. | Compositions and methods including depositing nanomaterial |
US11472979B2 (en) | 2007-06-25 | 2022-10-18 | Samsung Electronics Co., Ltd. | Compositions and methods including depositing nanomaterial |
US8405063B2 (en) | 2007-07-23 | 2013-03-26 | Qd Vision, Inc. | Quantum dot light enhancement substrate and lighting device including same |
US9680054B2 (en) | 2007-07-23 | 2017-06-13 | Samsung Electronics Co., Ltd. | Quantum dot light enhancement substrate and lighting device including same |
US10096744B2 (en) | 2007-07-23 | 2018-10-09 | Samsung Electronics Co., Ltd. | Quantum dot light enhancement substrate and lighting device including same |
US9276168B2 (en) | 2007-07-23 | 2016-03-01 | Qd Vision, Inc. | Quantum dot light enhancement substrate and lighting device including same |
US8759850B2 (en) | 2007-07-23 | 2014-06-24 | Qd Vision, Inc. | Quantum dot light enhancement substrate |
US8128249B2 (en) | 2007-08-28 | 2012-03-06 | Qd Vision, Inc. | Apparatus for selectively backlighting a material |
US9929325B2 (en) | 2012-06-05 | 2018-03-27 | Samsung Electronics Co., Ltd. | Lighting device including quantum dots |
Also Published As
Publication number | Publication date |
---|---|
IN143187B (xx) | 1977-10-15 |
JPS5076875A (xx) | 1975-06-23 |
BE817145A (fr) | 1975-01-02 |
DE2431128C2 (de) | 1984-02-23 |
JPS5329952B2 (xx) | 1978-08-24 |
MY7800060A (en) | 1978-12-31 |
CA993493A (en) | 1976-07-20 |
DE2431128A1 (de) | 1975-01-23 |
GB1466588A (en) | 1977-03-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3825792A (en) | Novel discharge lamp and coating | |
US4065688A (en) | High-pressure mercury-vapor discharge lamp having a light output with incandescent characteristics | |
CA1060942A (en) | Alumina coatings for mercury vapor lamps | |
US4727283A (en) | Low-pressure mercury vapour discharge lamp | |
US4559470A (en) | Fluorescent discharge lamp | |
EP0638625B1 (en) | Luminescent material for a mercury discharge lamp | |
EP0395775B1 (en) | Phosphor composition used for fluorescent lamp and fluorescent lamp using the same | |
US6867536B2 (en) | Blue-green phosphor for fluorescent lighting applications | |
US6222312B1 (en) | Fluorescent lamp having wide bandwidth blue-green phosphor | |
US6965193B2 (en) | Red phosphors for use in high CRI fluorescent lamps | |
JPS5842944B2 (ja) | けい光灯 | |
US3602758A (en) | Phosphor blend lamps which reduce the proportions of the costlier phosphors | |
US4029983A (en) | Metal-halide discharge lamp having a light output with incandescent characteristics | |
US5051653A (en) | Silicon dioxide selectively reflecting layer for mercury vapor discharge lamps | |
JPS62167387A (ja) | 低圧水銀蒸気放電灯 | |
EP0114441B1 (en) | Low-pressure mercury vapour discharge lamp | |
US4034257A (en) | Mercury vapor lamp utilizing a combination of phosphor materials | |
JP2003282026A (ja) | 単層の蛍光体層を有する蛍光ランプ | |
US4751426A (en) | Fluorescent lamp using multi-layer phosphor coating | |
US4633133A (en) | Fluorescent lamps having improved lamp spectral output and maintenance and method of making same | |
US3857054A (en) | Discharge device and method for generating near infrared radiations | |
EP0010991A2 (en) | Light source for illuminating objects with enhanced perceived coloration | |
CA1149004A (en) | Standard white fluorescent lamps employing blend | |
WO2008129489A2 (en) | Fluorescent mercury vapor discharge lamp comprising trichromatic phosphor blend | |
US3778660A (en) | Fluorescent lamp of high color rendering |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: NORTH AMERICAN PHILIPS ELECTRIC CORP. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WESTINGHOUSE ELECTRIC CORPORATION;REEL/FRAME:004113/0393 Effective date: 19830316 |