CN1747121A - Ultrahigh mercury light and projection light with this light as wick - Google Patents
Ultrahigh mercury light and projection light with this light as wick Download PDFInfo
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- CN1747121A CN1747121A CNA2005101026118A CN200510102611A CN1747121A CN 1747121 A CN1747121 A CN 1747121A CN A2005101026118 A CNA2005101026118 A CN A2005101026118A CN 200510102611 A CN200510102611 A CN 200510102611A CN 1747121 A CN1747121 A CN 1747121A
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- lamp
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- ultrahigh pressure
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Abstract
The invention includes a lamp body and electrodes. The lamp chamber is formed in the lamp body, and the electrodes extend into the interior of the lamp. The mercury and halide is filled into the lamp chamber. The invention features xenon-oxygen mixed gases filled into the lamp chamber. The electrodes above are equipped with round heads.
Description
Technical field
The present invention relates to a kind of ultrahigh pressure mercury lamp, particularly a kind of main ultrahigh pressure mercury lamp as projection light source.The invention still further relates to a kind of with the projection lamp of this ultrahigh pressure mercury lamp as wick.
Background technology
Ultrahigh pressure mercury lamp belongs to gaseous discharge lamp, be to utilize the ultra high pressure mercury vapor electric discharge to carry out luminous electric light source, because it has that electrical discharge arc is short, brightness is high, thereby be widely used in the optical imaging system such as projecting apparatus as projection light source (wick of projection lamp).As a rule, the optical system of projecting apparatus requires projection light source points of proximity light source as far as possible, and has very high brightness.In recent years, along with projecting apparatus constantly develops towards miniaturization, high brightness, high image quality and long-life direction, projection light source is also had higher requirement.
Mercury vapor discharge all has very strong radiation in ultraviolet ray usually in visible-range, the vapour pressure of mercury discharge is high more, and visible light is abundant more, and electric arc brightness is high more.The mercury vapour partial pressure will reach 10 usually during the ultrahigh pressure mercury lamp stable discharging
4More than the Pa, when requiring work, this bears the above gas pressure of 10MPa in lamp chamber at least.
During ultrahigh pressure mercury lamp work, the high temperature of mercury vapor discharge makes the tungsten molecule evaporation of electrode in the lamp chamber, causes the lamp body blackout, and shorten electrode life.Therefore, need suppress the evaporation of electrode tungsten molecule as far as possible.For this reason, ultrahigh pressure mercury lamp all is filled with mercury and halid mixture usually, like this, will complicated cyclic chemical reaction take place with the halide that adds at the tungsten molecule that evaporates, and the tungsten molecule is come back on the electrode, usually said halogen tungsten circulation that Here it is.Halogen tungsten circulation can reduce the ultrahigh pressure mercury lamp tungsten deposition on the lamp chamber during operation, prevents the lamp body blackening, and can prolong electrode life.Nonetheless, existing ultrahigh pressure mercury lamp is still lower electrode life, and it is bad to exist low, the radiative colour balance of luminous efficiency, and startup is slow and luminous element is bigger, as point-source of light effect defect of bad.
For solving the problems of the technologies described above, Chinese utility application has proposed a kind of ultrahigh pressure mercury lamp No. 01128049.2, is to be provided with the lamp chamber in lamp body, and two ends are electrode in the lamp chamber, and the root of electrode links to each other with the molybdenum foil at two ends, and the molybdenum foil both sides are connected with lead-in wire.Wherein, the discharge position of two electrodes is relative, and pole span is 0.8～1.8mm, is connected with mercury and halid mixture and xenon in the lamp chamber, and the introducing amount of mercury and halid mixture is 0.08～0.25mg/cm
3, mercury and halid mass ratio are 10～30: 1, the introducing amount of xenon is 10
5～3 * 10
6Pa, the power load of lamp cavity wall is 120～250W/cm
2
Though technique scheme has obtained certain effect, it mainly is from improving lamp chamber air pressure, increasing lamp cavity wall power load and reduce the pole span aspect and solve problem.For improving lamp chamber air pressure, working temperature when correspondingly needing to increase discharge, add the influence that pole span reduces, these factors can be aggravated the loss of electrode again to a certain extent, limit the effect of improving of halogen tungsten circulation, and, make illumination effect also be affected because the high-temperature electric arc discharge is stable inadequately.Thereby this ultrahigh pressure mercury lamp still can not satisfy the growing requirement of projection light source at aspects such as brightness, the photochromic balance of emission and useful lifes.
Summary of the invention
Technical problem to be solved by this invention provides a kind of high brightness point-source of light that can be used for projecting apparatus, and it has better brightness, colour balance and useful life.
For solving the problems of the technologies described above, the present invention proposes a kind of ultrahigh pressure mercury lamp, comprise lamp body and electrode, form the lamp chamber in the lamp body, electrode extends into inside, lamp chamber, and lamp body is made by quartz glass, inside, lamp chamber is filled with mercury and halid mixture, it is characterized in that also be filled with the gaseous mixture of xenon and oxygen in the lamp chamber, described electrode is the round end electrode.
Wherein, the amount of charging into of mercury and halid mixture is 0.3～1mg/mm in the lamp chamber of ultrahigh pressure mercury lamp
3, the inflation pressure of the gaseous mixture of xenon and oxygen is 10
5～10 * 10
5Pa, wherein oxygen account for described xenon and oxygen gaseous mixture volume 1～5 ‰, lamp cavity wall power load is 150～300W/cm
2, described electrode is two, its electrode spacing is 0.3～2.0mm.
Wherein, described round end electrode is made up of the electrode tip and the electrode stem that link to each other, and described electrode tip is hemisphere, is wound with tungsten filament on the described electrode stem.
Preferably, described electrode is two, and its electrode spacing is 1.1mm.
Preferably, described electrode is made less than the pure tungsten of 10ppm by impurity content.
Preferably, the hydroxy radical content of wherein said quartz glass is less than 1ppm, and tenor is less than 10ppm.
The present invention also provides a kind of projection lamp, comprises Lamp cup, implosion guard, wire holder and wick, and described projection lamp adopts ultrahigh pressure mercury lamp of the present invention as wick.
Preferably, described Lamp cup has the reflecting surface of paraboloidal, and its front edge has concave part, constitutes ventilation hole between described concave part and the described implosion guard.
Preferably, the front edge of each side of described Lamp cup has concave part respectively, thereby forms four ventilation holes facing each other on described Lamp cup.
Preferably, described implosion guard is a double-sided coating glass.
According to technical scheme of the present invention, in the lamp chamber of ultrahigh pressure mercury lamp, charged into the gaseous mixture of xenon and oxygen.Xenon suppresses the electrode sputter, and initiatively the oxygen that adds can participate in the halogen tungsten circulation effectively, promotes halide widely, as the reduction of mercuric bromide.In addition, used tungsten electrode is pointed tip electrode or cylindrical electrode usually, and the electrode among the present invention adopts the round end electrode.The round end electrode impels that transmitting and receiving of electronics fully reaches dynamic balancing in the mercury vapor discharge process, and stable discharging electric arc reduces electrode damage.Acting in conjunction by xenon and oxygen mixture and round end electrode, can guarantee ultrahigh pressure mercury lamp steady operation under littler electrode spacing, higher working temperature, and can have higher mercury vapour partial pressure and operating pressure, thereby further improve brightness, the radiative colour balance of improvement of ultrahigh pressure mercury lamp, and effectively improve useful life.
Projection lamp of the present invention in the time of on being applied in projecting apparatus, can adapt to the optics requirement of projecting apparatus owing to adopt ultrahigh pressure mercury lamp of the present invention as wick better, improves the output quality and the useful life of projecting apparatus effectively.Forming ventilation hole on the Lamp cup of projection lamp can guarantee the cooling as the ultrahigh pressure mercury lamp of wick is prevented that working temperature is too high.In addition, when each side at Lamp cup forms four ventilation holes facing each other, projection lamp is installed in the projecting apparatus with multiple different angle, satisfy under various installation situation to wire holder towards requiring, thereby increase installation flexibility.
Description of drawings
Below in conjunction with accompanying drawing, describe the specific embodiment of the present invention in detail.By the detailed description of doing below in conjunction with accompanying drawing, can more be expressly understood purpose of the present invention, advantage and feature.Among the figure:
Fig. 1 is the structural representation according to ultrahigh pressure mercury lamp of the present invention;
Fig. 2 is the structural representation according to the round end electrode of ultrahigh pressure mercury lamp of the present invention;
Fig. 3 is with the structural representation of ultrahigh pressure mercury lamp of the present invention as the projection lamp of wick according to of the present invention.
Embodiment
Referring now to the preferred embodiments of the present invention,, describe the present invention, the example is shown in the drawings.In described embodiment, identical part provides identical title and label, and it is repeated in this description omission.
Referring to Fig. 1, be depicted as structural representation according to ultrahigh pressure mercury lamp of the present invention.This ultrahigh pressure mercury lamp 10 comprises lamp body 11, two electrodes 12, the molybdenum foil 13 that is connected with two electrodes, and the lamp holder 14 that is positioned at lamp body one end respectively.
Be to guarantee the high temperature high voltage resistant ability of ultrahigh pressure mercury lamp 10, lamp body 11 is made by quartz glass.Preferably, wherein said quartz glass hydroxy radical content is less than 1ppm, and tenor is less than 10ppm.
Be filled with mercury and halid mixture in 112 inside, lamp chamber.Also be filled with the gaseous mixture of xenon and oxygen in the lamp chamber 112 simultaneously.
Halide can be bromide, as mercuric bromide, the tungsten molecule generation halogen tungsten circular response that it evaporates with mercury vapor discharge in the ultrahigh pressure mercury lamp course of work, the oxygen that initiatively adds can participate in the halogen tungsten circulation effectively simultaneously, promotes halid reduction widely.Round end electrode 12 impels that transmitting and receiving of electronics fully reaches dynamic balancing in the mercury vapor discharge process, and stable discharging electric arc reduces electrode damage.
Preferably, the amount of charging into of mercury and halid mixture is 0.3～1mg/mm in the lamp chamber 112 of ultrahigh pressure mercury lamp 10
3, the inflation pressure of the gaseous mixture of xenon and oxygen is 10
5～10 * 10
5Pa, wherein oxygen account for described xenon and oxygen gaseous mixture volume 1～5 ‰, lamp cavity wall power load is 150～300W/cm
2, electrode spacing is 0.3～2.0mm, particularly 1～2mm.
Wherein, in described mercury and halid mixture, mercury and halid mass ratio can be 20～30: choose in 1 the preferable range.
Specifically, in an example of the present invention, the wall thickness of the spherical portion 111 of ultrahigh pressure mercury lamp 10 is 3.5mm, and lamp chamber diameter is 10mm, and the amount of charging into of mercury and halid mixture is 0.7mg/mm in the lamp chamber 112
3, mercury and halid mass ratio are 25: 1, the inflation pressure of the gaseous mixture of xenon and oxygen is 5 * 10
5Pa, wherein oxygen account for described xenon and oxygen gaseous mixture volume 2 ‰, lamp cavity wall power load is 220W/cm
2, electrode spacing is 1.1mm.
Referring to Fig. 2, be depicted as structural representation according to the round end electrode of ultrahigh pressure mercury lamp of the present invention.Described electrode 12 is made of integrally formed electrode stem 121 and electrode tip 124, described electrode tip 124 is hemisphere, radius is 0.35～1mm, the diameter of electrode stem 121 is 0.2～0.8mm, and the position near electrode tip 124 on the electrode stem 121 is wound with the tungsten filament 122 and 123 that diameter is 0.2～0.4mm.Preferably, the tungsten filament diameter is 0.3mm, divides two-layer shape in the shape of a spiral to twine, and internal layer tungsten filament 122 twines two circles at least, and outer tungsten filament 123 twines a circle at least.Described electrode spacing is 1.1mm.
Above-mentioned electrode 12 is when ultrahigh pressure mercury lamp starts, and the focus that can make electrode in the extremely short time is delivered to the top of electrode tip 124 from spiral or electrode edge, makes electrode heat of emission electronics in the extremely short time, and ultrahigh pressure mercury lamp is started fast.And the kind electrode structure can make electronics transmit and receive in the halogen tungsten cyclic process fully to reach dynamic balancing, reduces electrode damage, thereby can prevent lamp cavity wall blackout, increases the service life.
Preferably, described electrode is made less than the pure tungsten of 10ppm by impurity content.
Table 1 has been enumerated the example of the concrete technology implementation parameter that the present invention adopts in the specific implementation.
Table 1
| Parameter and data | Example 1 | Example 2 | Example 3 |
| Spherical portion wall thickness (mm) | 2 | 3.5 | 5 |
| Lamp chamber volume (mm 3) | 800 | 500 | 200 |
| Electrode tip arc radius (mm) | 0.5 | 0.5 | 0.5 |
| Electrode anode-cathode distance (mm) | 2 | 1.1 | 0.8 |
| Lamp cavity wall live load (W/mm 3) | 180 | 220 | 280 |
| Mercury (mg/mm 3) | 0.4 | 0.7 | 1.0 |
| Mercuric bromide (mg/mm 3) | 0.018 | 0.028 | 0.035 |
| Xenon inflation pressure (Pa) | 2×10 5 | 5×10 5 | 8×10 5 |
| Oxygen inflation pressure (Pa) | 220 | 1000 | 3000 |
Table 2 has been enumerated the technique effect that technical parameter reached of each example in the employing table 1.
Table 2
| Test result | Example 1 | Example 2 | Example 3 |
| Luminous flux (lm) | 11050 | 12038 | 11580 |
| Launch photochromic balance | Good | Good | Good |
The performance of ultrahigh pressure mercury lamp is subjected to the influence of its technical parameter to a great extent.In the disclosed parameter area of the present invention, implement the present invention, can obtain better technique effect.
Referring to Fig. 3, be depicted as with the structural representation of ultrahigh pressure mercury lamp 10 of the present invention as a kind of projection lamp of wick.This projection lamp comprises Lamp cup 20, implosion guard 30, wire holder 40 and wick (ultrahigh pressure mercury lamp 10).
Preferably, described Lamp cup has the reflecting surface of paraboloidal, and its front edge has concave part 21, constitutes ventilation hole between described concave part 21 and the described implosion guard.
Preferably, the front edge of each side of described Lamp cup has concave part 21 respectively, thereby forms four ventilation holes facing each other on described Lamp cup.
This projection lamp in the time of on being applied in projecting apparatus, can adapt to the optics requirement of projecting apparatus owing to adopt ultrahigh pressure mercury lamp of the present invention 10 as wick better, improves the output quality and the useful life of projecting apparatus effectively.Forming ventilation hole on the Lamp cup 20 of projection lamp can guarantee the cooling as the ultrahigh pressure mercury lamp 10 of wick is prevented that working temperature is too high.In addition, when each side at Lamp cup 20 forms four ventilation holes facing each other, projection lamp can multiple different angle be installed in the projecting apparatus, satisfy under various installation situation to wire holder towards requiring, thereby increase installation flexibility.
Preferably, described implosion guard is a double-sided coating glass.Plated film is a kind of light-transmissive film, and two-sided implosion guard light transmittance with this plated film can reach more than 95%, even surpasses 99%.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. ultrahigh pressure mercury lamp, comprise lamp body and electrode, described lamp body is made by quartz glass, form the lamp chamber in it, described electrode extends into inside, described lamp chamber, and inside, described lamp chamber is filled with mercury and halid mixture, it is characterized in that, also be filled with the gaseous mixture of xenon and oxygen in the described lamp chamber, described electrode is the round end electrode.
2. ultrahigh pressure mercury lamp according to claim 1 is characterized in that, the amount of charging into of mercury and halid mixture is 0.3～1mg/mm in the described lamp chamber
3, the inflation pressure of the gaseous mixture of described xenon and oxygen is 10
5～10 * 10
5Pa, wherein oxygen account for described xenon and oxygen gaseous mixture volume 1～5 ‰, the power load of the inwall in described lamp chamber is 150～300W/cm
2, described electrode is two, its electrode spacing is 0.3～2.0mm.
3. ultrahigh pressure mercury lamp according to claim 1 is characterized in that, described round end electrode is made up of the electrode tip and the electrode stem that link to each other, and described electrode tip is hemisphere, is wound with tungsten filament on the described electrode stem.
4. ultrahigh pressure mercury lamp according to claim 1 is characterized in that, described electrode is two, and its electrode spacing is 1.1mm.
5. ultrahigh pressure mercury lamp according to claim 1 is characterized in that described electrode is made less than the pure tungsten of 10ppm by impurity content.
6. ultrahigh pressure mercury lamp according to claim 1 is characterized in that the hydroxy radical content of wherein said quartz glass is less than 1ppm, and tenor is less than 10ppm.
7. a projection lamp comprises Lamp cup, implosion guard, wire holder and wick, it is characterized in that, with each described ultrahigh pressure mercury lamp among the claim 1-6 as wick.
8. projection lamp according to claim 7 is characterized in that described Lamp cup has the reflecting surface of paraboloidal, and its front edge has concave part, constitutes ventilation hole between described concave part and the described implosion guard.
9. projection lamp according to claim 8 is characterized in that the front edge of each side of described Lamp cup has concave part respectively, thereby forms four ventilation holes facing each other on described Lamp cup.
10. according to each described projection lamp in the claim 7～9, it is characterized in that described implosion guard is a double-sided coating glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101026118A CN100380567C (en) | 2005-09-06 | 2005-09-06 | Ultrahigh mercury light and projection light with this light as wick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101026118A CN100380567C (en) | 2005-09-06 | 2005-09-06 | Ultrahigh mercury light and projection light with this light as wick |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1747121A true CN1747121A (en) | 2006-03-15 |
| CN100380567C CN100380567C (en) | 2008-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101026118A Expired - Fee Related CN100380567C (en) | 2005-09-06 | 2005-09-06 | Ultrahigh mercury light and projection light with this light as wick |
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|---|---|
| CN (1) | CN100380567C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456599A (en) * | 2013-09-04 | 2013-12-18 | 江苏森莱浦光电科技有限公司 | Projector light source and driving device and driving method of projector light source |
| CN104284500A (en) * | 2014-04-10 | 2015-01-14 | 凤凰电机公司 | High-pressure power discharge lamp and its lighting method |
| CN106154699A (en) * | 2015-05-16 | 2016-11-23 | 吴小平 | Adjust refractive index formula laser beam deflection device and made laser projection |
| CN106373858A (en) * | 2015-07-22 | 2017-02-01 | 精工爱普生株式会社 | Discharge lamp, manufacturing method for discharge lamp, and projector |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000123786A (en) * | 1998-10-13 | 2000-04-28 | Matsushita Electronics Industry Corp | High-pressure mercury lamp, illumination optical device using this high-pressure mercury lamp and image display device using this illumination optical device |
| KR100452322B1 (en) * | 2002-06-26 | 2004-10-12 | 삼성전자주식회사 | method for supplying power supply voltage in semiconductor memory device and circuit for supplying cell array power supply voltage |
| US6967444B2 (en) * | 2004-01-29 | 2005-11-22 | Osram Sylvania Inc. | Miniature reduced mercury HID lamp |
-
2005
- 2005-09-06 CN CNB2005101026118A patent/CN100380567C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456599A (en) * | 2013-09-04 | 2013-12-18 | 江苏森莱浦光电科技有限公司 | Projector light source and driving device and driving method of projector light source |
| CN103456599B (en) * | 2013-09-04 | 2015-12-02 | 江苏森莱浦光电科技有限公司 | A kind of projector light source, projector light source Drive And Its Driving Method |
| CN104284500A (en) * | 2014-04-10 | 2015-01-14 | 凤凰电机公司 | High-pressure power discharge lamp and its lighting method |
| CN104284500B (en) * | 2014-04-10 | 2016-08-24 | 凤凰电机公司 | The lighting method of high-pressure discharge lamp |
| CN106154699A (en) * | 2015-05-16 | 2016-11-23 | 吴小平 | Adjust refractive index formula laser beam deflection device and made laser projection |
| CN106154699B (en) * | 2015-05-16 | 2020-12-11 | 深圳唯创技术发展有限公司 | Refractive index-adjustable laser beam deflection device and laser projector manufactured by same |
| CN106373858A (en) * | 2015-07-22 | 2017-02-01 | 精工爱普生株式会社 | Discharge lamp, manufacturing method for discharge lamp, and projector |
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| Publication number | Publication date |
|---|---|
| CN100380567C (en) | 2008-04-09 |
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Granted publication date: 20080409 Termination date: 20170906 |