CN103843108B - Metal halide lamp and the headlamp with described lamp for car headlamp - Google Patents
Metal halide lamp and the headlamp with described lamp for car headlamp Download PDFInfo
- Publication number
- CN103843108B CN103843108B CN201280049045.7A CN201280049045A CN103843108B CN 103843108 B CN103843108 B CN 103843108B CN 201280049045 A CN201280049045 A CN 201280049045A CN 103843108 B CN103843108 B CN 103843108B
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- Prior art keywords
- light
- discharge lamp
- reflector
- diffusion
- headlamp
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
- H01J61/827—Metal halide arc lamps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Describe a kind of discharge lamp and there is the headlamp of discharge lamp.Discharge lamp 10 includes that discharge vessel 16, discharge vessel 16 have the electrode 20 for producing electric arc.Discharge vessel includes the implant with rare gas and metal halide.In order to avoid the inhomogeneities caused by the scattering in the salt pond 22 in discharge vessel, described lamp farther includes diffused section 24, this diffused section be arranged such that below horizontal line launch light at least some of by diffusion and at the described light above the horizon launched not by diffusion.Headlamp includes that reflector 32, described reflector have the upper reflector part 36 being reflected in the light above the horizon launched and the lower reflector sections 38 being reflected in the light that below horizontal line is launched.Diffused section 24 is arranged such that at lower reflector sections 38 light of reflection at least some of by diffusion and makes at upper reflector part 36 light of reflection not by diffusion.
Description
Technical field
The present invention relates to discharge lamp and relate to including the car headlamp of discharge lamp.
Background technology
Nowadays in the forward lighting systems of automobile, use high-intensity discharge lamp.Light is produced by the electric arc in discharge vessel.?
In headlamp, light is reflected by reflector thus forms the light distribution pattern of gained.
Nowadays the high-intensity discharge lamp used in car headlamp includes implant in discharge vessel, this implant bag
Include rare gas and the metal halide of the most such as xenon.
US5299101 describes before having the automobile that the discharge light with metal halide as light source being arranged in reflector steeps
Illuminator.In the work process of discharge lamp, a part of light sent is dissipated by the metal halide precipitate thing bottom discharge vessel
Penetrate.Thus scatter, in order to eliminate, the passage of scintillation light caused, in the front opening of reflector, arrange that there is the saturating of diffusing lens ladder
Mirror, so that the light diffusion launched by metal halide precipitate thing and reflected by the lower reflecting surface of reflector.
Summary of the invention
An object of the invention is to propose for the discharge lamp and the headlamp that provide required homogeneous light distribution pattern.
This target solves by discharge lamp according to claim 1 and by headlamp according to claim 8.From
Belong to claim and relate to the preferred embodiments of the present invention.
Discharge lamp according to the present invention includes the discharge vessel with the electrode for producing electric arc.At this discharge vessel
In, there is the implant of rare gas and the metal halide including such as xenon.
In the work of lamp, a part of metal halide existed in liquid form can be deposited on the end of discharge vessel
Portion.The light sent from the electric arc between electrode can in " salt pond " therefore formed from be scattered.But, this optical diffusion effect
And it is non-constant.The accurate dimension in salt pond and position can be such as because of the different operatings (acceleration etc. such as different) of motor vehicles
And change.Equally, optical diffusion effect can be different, such as, due to flashing back of electrode along with the lamp life-span.
Scattering effect may cause from headlamp (in addition to reflector, it is also possible to include such as chopper and projection thoroughly
Other optical elements of mirror) optical system produce light distribution pattern in uneven.Additionally, due to scattering effect is the most permanent
Fixed, thus be not easy in will not producing gained light distribution pattern the most uneven in the case of use and be transmitted into salt from electric arc
Light quantity in the general direction in pond designs optical system.The present invention describe with the geometry of change in salt pond, size and
Spatial transmission rate independently significantly improves the method for the uniformity in gained light distribution pattern.
For this purpose it is proposed, discharge lamp includes for making the light diffusing diffused section sent from electric arc.
Optical diffuser effect can such as by the transparent part of lamp (such as at discharge vessel itself or more excellent
Selection of land is on the shell being provided in around discharge vessel) provide rough surface to obtain.Diffused section is transmitted through it in order to making
Light scattering.But, contrary with the scattering effect at salt pond, this diffusion effect is constant and reliable, and therefore can be used for
The optical system of design headlamp.Optical diffuser effect can be by the surface such as the random distribution obtained by blasting treatment
Modify and realize, or can also be come by any regular surfaces pattern different from common flat surfaces real alternatively
Existing.
But, owing to the optical diffuser effect relevant with big diffused section also causes out of focus, so the present invention proposes not
The all light sent from discharge lamp all should at diffused section at by diffusion, but diffused section should be arranged so that only at horizontal line
The light below sent at diffused section by diffusion, and the light above the horizon sent at identical diffused section not by
Diffusion.Therefore, a large amount of light of sending from electric arc (such as, at least at the light above the horizon sent, it is preferred that even one
The light point sent below horizontal line) at diffused section without undergoing diffusion.Therefore, diffused section has size and position permit
Permitted still to include that the high of the optical system for headlamp focuses on light part from the light sent according to the discharge lamp of the present invention.Due to this
Diffused section, at least for a part for the light sent below horizontal line, use (constant) scattering obtain without undergoing due to
The different size in salt pond, position and geometry and the light of change that causes.
In the present context, such as producing generally from motor vehicles in the reference of " level " and " vertically " refers to reflector
The lamp of the gained light distribution pattern that anterior level sends may orientation.As skilled artisan will know that, before being generally used for automobile
Discharge lamp in illuminator is to work along horizontal alignment.
It is not precluded within other positions (such as, according to the diffused section in horizontal line position below that the present invention provides
Above the horizon) probability of other diffuser elements separated is provided.
According to a preferred embodiment, diffused section be continuous and delimit, i.e. do not make from electric arc send light diffusing
Non-diffuse is partially disposed on around diffused section.Although there may be other diffusion parts for other purposes on lamp, but
It is that these preferably separate with the diffused section according to the present invention.
According to another preferred embodiment of discharge lamp, can carry on the transparent housing shell being provided in around discharge vessel
For diffused section.In this outer casing (also referred to as external bulb) the most many discharge lamps and steady for such as heat
Determine and/or the purpose of ultraviolet filtering.According to the preferred embodiment, outer casing provides diffused section.Although it is possible to
Diffused section is provided on the inner side of outer casing, but especially preferably as thin film or coating or as the outside of outer casing
Surface is modified and is provided.Under the preferable case delimiting diffused section (that is, there is the non-diffuse part being positioned around), therefore
The diffused section formed preferably provides diffusion window from the teeth outwards, and wherein the surface around it keeps smooth and non-diffuse.
Discharge vessel can be made up of quartz glass.Equally, outer casing (if present) can be made up of quartz glass.Unrestrained
Penetrate part to provide as the rough surface of quartz glass.This surface or " hair side " can such as be carried by blasting treatment
Supply.Specifically, preferably by laser treatment (such as by the preferred pulse laser for providing rough surface structure)
Rough surface is provided.In this context, even if the surface texture in such as hole etc. is with small distance formation adjacent one another are, this is the most still
Will be understood as continuous print diffused section.Surface roughness should be sufficiently strong to realize diffusion effect.Roughness Ra should 6 m with
On.The preferred value of surface roughness is 10-20 m.
Although diffused section is effective for the optical effect eliminating the change caused by salt pond, it is generally preferable that
The minimum scattering only providing required at diffused section limits out of focus.Therefore, diffused section should generally be limited as much as possible
Size, still obtains required uniformity degree in gained light is distributed simultaneously.
According to a preferred embodiment, diffused section is arranged as providing only one of the bottom of the discharge vessel at shell
Diffusion window on Fen.Therefore, all light not sent below horizontal line are all by diffusion.Diffusion window is preferably in electric arc week
The region, surface at least substantially cylinder-shaped body (the most preferably outer casing) enclosed.
Diffusion window can be arranged to cover discharge vessel or the bottom of outer casing, so makes from passing through that electric arc sends
All light of the potential site in salt pond are all by diffusion.In this way, it will eliminate any different optical effects in salt pond, the most still
Reasonably limit scattered quantum, and therefore maintain focusing.
But, according to another preferred embodiment, can further limit diffusion window.This is because it is as the most real in combined
Execute example will become apparent from, in car headlamp formed gained light distribution pattern in can use very differently from
The different piece of the light that electric arc sends.In favourable reflector design, for regard to the most important region for uniformity (i.e.,
Region near light distribution center) for, do not use the light the most vertically sent from arc center.In these expedients,
Be used for projecting to light distribution pattern center just to send from lamp in vertical direction with angle.Therefore, excellent according to one
Select embodiment, diffusion window can be arranged with axial dipole field, to cover a part of region between electrode.Therefore, diffusion window is limited
Scope, so make to be transmitted into the diffused section that can pass by least partially of the light of lower vertical direction from electric arc.So
And, the part of light sent from electric arc to become to limit angle with lower vertical direction will be by diffusion window.This part light quilt just
It is preferably used to produce the center image of the electric arc in gained light distribution pattern.
The size of diffusion window is sufficiently large to provide required uniformity degree in gained light distribution pattern, but except this with
Outward should be the least.According to a preferred embodiment of the present invention, (axially) distance between diffusion window has corresponding to electrode
The axial length of 1 to 3 times.The width of diffusion window is preferably to become +/-45 ° to send to +/-85 ° with lower vertical direction
Light by diffusion.
Headlamp according to the present invention also includes at least one reflector and can in addition to discharge lamp as above
Selection of land includes other optical elements of such as chopper and projecting lens.
Lamp is arranged in reflector the light making to send from lamp and is reflected by reflector.Reflector includes different reflector portions
Point, these parts at least include the upper reflector part for being reflected in the light above the horizon sent from lamp and for being reflected in
The lower reflector sections of the light sent from lamp below horizontal line.
The light that the diffused section of lamp is arranged such that to reflect from lower reflector sections at least some of by diffusion, and
Make the light reflected at upper reflector part not by diffusion.
Preferably, headlamp provides the gained light distribution pattern including bright dark cut-off.This bright dark cut-off is (logical
Often horizontal alignment, and s known as technical staff, can include becoming, from horizontal line, the low-angle part limited) it is that acquisition is different
Needed for illumination functions (illumination of the most most important low beam).Bright dark cut-off low-intensity more than dead line is with following
High intensity between there is sharp contrast.Although bright dark cut-off can only be produced by the shape of reflector, but in the present invention
Context in preferably, bright dark cut-off by the edge provided for ending photodistributed part chopper produce.
According to a preferred embodiment of the present invention, lower reflector sections includes for forming gained light distribution pattern not
Different piece or region with part.Preferably, during lower reflector sections includes that the reflection light from discharge lamp is for being formed
First time reflector sections of heart image.Center image is to project to the electric arc in the region at the photodistributed center of gained
Reflected image.First time reflector sections can be defined as a part for lower reflector sections, but is axially positioned at the bottom of lamp
Between gap center between seat and lamp electrode.
Preferably, diffused section be arranged such that from lamp be transmitted into first reflector sections at least some of
Light in this direction that place is reflected is by diffusion.Therefore, diffused section is arranged in corresponding to for forming center image
The position of light direction.This central area of gained light distribution pattern is for inhomogeneities (especially time-varying inhomogeneities)
Most critical.Scattering effect owing to being caused by diffused section is constant, so the shape of optical system and especially reflector
Can be preferably designed to form center image from the diffusion image of electric arc.It is thereby achieved that gained light distribution pattern
Favourable uniform centre.
Owing to, in favourable reflector design, first time reflector sections is disposed axially in after electrode, so diffusion
Part is preferably arranged in the direction closer with lamp base in axially offset manner with electrode.According to an especially preferred enforcement
Example, the axial location of diffused section is selected such that the gap center between its axially extending at maximum up to electrode is without surpassing
Guo Gai center.Therefore, the direction at the center between electrode to diffusion window edge may with lower horizontal direction shape at an angle,
This angle be preferably 0 ° (that is, diffused section extends right to reach center) to 10 ° (that is, the edge of diffused section be positioned at in
The certain axial distance of the heart).
Accompanying drawing explanation
These and other aspects, feature and the advantage of the present invention shows combining accompanying drawing with reference to the description of preferred embodiment
And be clear to and be illustrated, in accompanying drawing:
Fig. 1 illustrates the side view of an embodiment of discharge lamp；
Fig. 2 a illustrates the discharge vessel of the lamp according to Fig. 1 and the enlarged drawing of external bulb；
Fig. 2 b illustrates the discharge vessel of Fig. 2 a and the sectional view of external bulb, and its middle section is that the line B-B along Fig. 2 a obtains；
Fig. 3 illustrates the schematic side elevation of an embodiment of headlamp；
Fig. 4 illustrates the schematic diagram of the photodistributed projection being projected in screen that the headlamp from Fig. 3 sends.
Detailed description of the invention
Fig. 1 illustrates the high-intensity discharge lamp in motor vehicle headlamp.Discharge lamp 10 includes having and mechanically and electrically connects
The base 12 of head and for producing light, the burner 14 being mechanically and electrically connected on base 12.Burner 14 includes quartz glass
Glass discharge vessel 16, and the cylindrical external bulb 18 being made up of quartz glass is provided around this discharge vessel 16.
In discharge vessel 16, providing electrode 20 in discharge space, wherein its electrode tip is axial arranged with distance d
(Fig. 2 a).According to major part automotive regulatory, electrode distance d is about 4 mm, but can become according to different lamp type and regulations
Change.
Xenon and the implant of metal halide are provided in discharge space, so allow to be existed by applying high pressure
Electric arc is lighted between the dististyle of electrode 20.Upon ignition, by by via in the electric connection at base 12 and discharge vessel 16
Sealing electric contact apply electrical power carry out pilot arc.It is commonly used for the discharge lamp stable state with 20 to 40 W of car headlamp
Operating power carrys out work.
Structure due to the most corresponding discharge lamp and the difference for discharge vessel 16 can use implant itself to be technology
Known to personnel, so following description will focus in the target of the present invention, i.e. from the possible scattering of the light that electric arc sends.
When discharge lamp 10 works along shown horizontal alignment, the salt pond 22 of liquid metals halogenide is by under discharge space
Portion is formed.Therefore the light being transmitted into direction, lower section from electric arc can depend on the size in salt pond 22, position and optical
Matter and be scattered.But, these character in salt pond may such as change due to external force or along with the life-span of lamp 10.It addition, salt
The positions and dimensions in pond can change having between the different lamps of discharge vessel of different interior shape.Therefore, scattering effect
Also will change.In the embodiment of the discharge lamp 10 shown in FIG, the outer surface of external bulb 18 provides diffusion window 24.
Although the external bulb 18 itself being made up of quartz glass is transparent, but diffusion window 24 causes one part diffusion, so makes
Obtain light to be transmitted, but scattered a certain amount of.In FIG, this schematically shows both following: send out from electric arc
Be mapped to pass by diffusion window 24 direction in the first example of light beam 26, so make it can be scattered at salt pond 22
But do not scattered by diffusion window 24；And the second light beam 28 sent from electric arc, it through diffusion window 24 and is dissipated there
Penetrate.
The enlarged drawing of Fig. 2 a and Fig. 2 b is shown in more detail diffusion window 24 relative to the dististyle of electrode 20 and therefore relative to
The size of electric arc and layout.As can be seen diffusion window 24 is continuous print, i.e. the complete diffusion in region, surface covered.It addition, it is unrestrained
Penetrating window 24 is to delimit, i.e. the surface around its external bulb 18 keeps smooth and non-diffuse.In the embodiment shown, diffusion
The axial length L of window 24 is about 2.5 times of distance d between electrode 20.Diffusion window 24 is the most not centrally disposed in
Below gap between electrode 20, and it is directed towards base 12 axial dipole field and arranges.In the example shown, diffusion window 24 is the most inclined
Move the right hand edge 25 of diffusion window 24 is arranged to: compare distance electrode 20 between gap center for closer to base 12.
In the example shown, in the perpendicular of the center longitudinal axis through lamp 10 gap center from electrode start lower vertically
The angle beta limited between the edge of direction and diffusion window 24 is about 3 °.In different embodiments, the axial dipole field of window 24 can not
With, so make angle beta can change between such as 0 ° and 10 °.
In circumference extends, as from Fig. 2 b, diffusion window 24 be arranged to cover become with lower vertical direction +/-α=
The direction of the angular range of 70 °.
Therefore, diffusion window 24 only covers the part of lower half in light emission direction.Specifically, angular extensions alpha can not
Extend to +/-90 °, i.e. be up to the standard direction, but diffusion window 24 is maintained at distance h under horizontal line, as shown in Figure 2 a.
Therefore, the light being transmitted in horizontal direction is not by diffusion.
Fig. 3 illustrates car headlamp 30, and this headlamp includes the reflector with the socket 34 of the base 12 accommodating lamp 10
32.Reflector 32 includes having upper reflector part 36 and the inner reflective surface of lower reflector sections 38.It addition, headlamp bag
Include chopper 40 and projecting lens 42.
In the work of headlamp 30, the transmitting light of lamp 10 is reflected by reflector 32, is partly covered also by chopper 40
And project by projecting lens 42 thus form gained light distribution pattern subsequently.
Reflector 32 is the reflector of complicated shape, wherein goes up the shape of reflecting surface 36 and lower reflecting surface 38 by mathematics
Ground design is to form light distribution pattern from the superposition of the different reflection graphic picture of electric arc.
Fig. 4 illustrates the symbology of this gained light distribution pattern projection on screen.Light distribution pattern includes usual water
The bright dark cut-off 44 that level land is stretched, wherein sloping portion is with horizontal line shape at an angle.
Reflector 32 is shaped in discharge lamp 10 produce in the different piece projecting to gained light distribution pattern
Arc image.As shown in Figure 4, light distribution pattern is formed by the arc image being arranged under different angles.Reflector 32 is become
Shape is the reflector region indicating light to be reflected thereon so that the angular orientation of each image: be transmitted into lower vertical side from lamp 10
The arc image that formation is vertically oriented by the light in, and the light of horizontal emission will form the arc image of horizontal alignment.
As shown in symbolic in Fig. 3, reflector 32 includes that reflection is transmitted into the periphery of gained light distribution pattern from electric arc
The upper reflector part 36 of the light in points 54.In figs. 3 and 4, corresponding light beam and the reality of side images 46 thus set up
Example is represented as dotted line.
As further shown in Figure 3, a part for lower reflector sections 38 is first time reflector sections 48, its reflection from
The electric arc of discharge lamp 10 is to the light in the core 52 of light distribution pattern, thus forms center image 50.Center image 50 He
Corresponding light beam is represented as dotted line.First time reflector sections 48 is axially positioned between the electrode 20 of base 12 and lamp 10
Between gap center.
It is transmitted into the light in the direction of first reflector sections 48 from lamp 10 as being appreciated that from the comparison of Fig. 1 and Fig. 3
Through diffusion window 24.Correspondingly, first time reflector sections 48 is designed to the center image 50 of somewhat diffusion is projected to institute
Obtain in the core 52 of light distribution pattern.
Therefore, in gained light distribution pattern shown in the diagram, it is placed close to the central part at the center of light distribution pattern
Divide 52 to be illuminated by the center image 50 of diffusion, and be positioned at distance center neighboring area 54 farther out by not by the side images of diffusion
46 illuminate.In central area 52, illumination is uniform and the change of position, size and optical property without undergoing salt pond 22
Change.
Although illustrating and describing in detail the present invention in accompanying drawing and above description, but these explanations and description are considered as
It is illustrative or exemplary and non-limiting；The present invention is not limited to disclosed embodiment.Specifically, although described
Preferably diffusion window 24 is not symmetrically arranged between electrode 20, and does not cover the whole distances between electrode, but substitutes
Be also possible to provide symmetrical diffusion window, or there is the diffusion window of bigger extension in a longitudinal direction.
It addition, in the embodiment shown, the light of lamp 10 is transmitted in addition to diffusion window 24 without diffusion or concealed ground
In all direction in spaces.S known as technical staff, there are the various amendments that discharge lamp is commonly known, including diffusing surface modify or
Shadowing elements, such as stria.It is emphasized that the difference of other diffusion/shadowing elements of the present invention and these is: its
It is arranged to the light diffusion that will may scatter at salt pond 22, i.e. diffusion window 24 is disposed in below horizontal line.But, this is also
Being not intended to get rid of substituting lamp, these lamps also include being arranged in diverse location in addition to diffusion window 24 under the electrodes
Other shadowing elements or diffuser element.Specifically, it is preferred that other diffusions of diffusion window 24 and those or shadowing elements define
Open, i.e. non-diffuse part is maintained at about.
Those skilled in the art put into practice invention required for protection in study accompanying drawing, disclosure content and appended claims
Time be appreciated that and realize other variants of disclosed embodiment.
In the claims, word " includes " or " comprising " is not precluded from other elements, and indefinite article " " or "
Individual " be not precluded from multiple.The simple thing of some method enumerated in mutually different dependent claims or different embodiment
Do not indicate that the combination of these methods cannot be used to advantage in fact.Any reference marks in claim should not be construed as restriction
Scope.
Claims (12)
1. for a discharge lamp for car headlamp, comprising:
-there is the discharge vessel (16) of electrode (20) for producing electric arc,
-wherein said discharge vessel (16) includes that implant, described implant include at least rare gas and metal halide,
-wherein said discharge lamp farther includes diffused section, and described diffused section is arranged such that at horizontal line to issue
The light penetrated at least some of at described diffused section by diffusion so that light is transmitted by described diffused section and dissipates
Penetrate a certain amount of light, and the described light above the horizon launched at described diffused section not by diffusion, described horizontal line
Limited by described discharge lamp operating position in described headlamp.
Discharge lamp the most according to claim 1, wherein
-described diffused section is continuous print,
-and wherein non-diffuse part arrange around described diffused section.
Discharge lamp the most according to claim 1 and 2, wherein
-described discharge lamp includes the transparent housing shell (18) provided around described discharge vessel (16),
-and wherein said diffused section provide on the outside of described discharge vessel (16) or in described outer casing (18)
Inner side or outside on.
Discharge lamp the most according to claim 3, wherein
-described discharge vessel (16) and/or described outer casing (18) are made up of quartz glass,
-and described diffused section include the rough surface of quartz glass.
Discharge lamp the most according to claim 1 and 2, wherein
-described diffused section is arranged to be provided in only a part for the bottom of described discharge vessel (16) or outer casing (18)
On diffusion window (24).
Discharge lamp the most according to claim 5, wherein
-described diffusion window (24) is arranged to cover the only a part in the space between described electrode (20).
Discharge lamp the most according to claim 5, wherein
The axial length of-described diffusion window (24) is 1 to 3 times of distance d between described electrode (20).
8. a car headlamp, it includes at least:
-discharge lamp according to claim 1 and 2 (10), and
-reflector (32), wherein said discharge lamp (10) is arranged in described reflector (32), so makes from described electric discharge
The light that lamp (10) sends is by described reflector (32) reflection thus forms gained light distribution pattern,
-wherein said reflector (32) at least include being reflected in described in the light that above the horizon sends from described discharge lamp (10)
Upper reflector part (36) and be reflected in the lower reflector portion of the light that below described horizontal line sends from described discharge lamp (10)
Divide (38),
-and wherein said diffused section be arranged such that described lower reflector sections (38) place reflection light at least
A part is by diffusion, and makes the light reflected at described upper reflector part (36) place not by diffusion.
Headlamp the most according to claim 8, wherein
-described headlamp is configured to be formed as including by the light launched from described discharge lamp (10) gained of bright dark cut-off
Light distribution pattern.
Headlamp the most according to claim 9, described headlamp farther includes to be arranged to provide described light/dark cut-off
The chopper (40) of line.
11. headlamps according to claim 8, wherein
It is anti-that-described reflector (32) is shaped to first time reflector sections (48) so that described lower reflector sections (38)
Penetrate the light sent from described discharge lamp (10) to form the center image the central area projecting to described light distribution pattern
(50),
-wherein said diffused section is arranged such that to send from described discharge lamp (10) with in described first reflector portion
Divide the light of (48) place reflection by diffusion.
12. headlamps according to claim 11, wherein
-described first time reflector sections (48) is disposed in the gap being axially between described electrode (20) below
In position.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201161542947P | 2011-10-04 | 2011-10-04 | |
| US61/542947 | 2011-10-04 | ||
| PCT/IB2012/055193 WO2013050914A1 (en) | 2011-10-04 | 2012-09-28 | Metal halide lamp for automotive headlamp and headlamp with said lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103843108A CN103843108A (en) | 2014-06-04 |
| CN103843108B true CN103843108B (en) | 2016-12-28 |
Family
ID=47215682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280049045.7A Expired - Fee Related CN103843108B (en) | 2011-10-04 | 2012-09-28 | Metal halide lamp and the headlamp with described lamp for car headlamp |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2745308B1 (en) |
| CN (1) | CN103843108B (en) |
| WO (1) | WO2013050914A1 (en) |
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| US5243501A (en) * | 1990-11-20 | 1993-09-07 | Koito Manufacturing Co., Ltd. | Automotive headlamp |
| EP0989587A1 (en) * | 1998-09-22 | 2000-03-29 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | High pressure discharge lamp and associated luminaire |
| US6059435A (en) * | 1997-12-18 | 2000-05-09 | Robert Bosch Gmbh | Headlight of a vehicle for high beam light and low beam light |
| CN1754246A (en) * | 2003-02-27 | 2006-03-29 | 皇家飞利浦电子股份有限公司 | High-pressure discharge lamp |
| CN101243537A (en) * | 2005-08-11 | 2008-08-13 | 电灯专利信托有限公司 | High-pressure discharge lamp |
| EP2190005A2 (en) * | 2008-11-25 | 2010-05-26 | Ngk Insulators, Ltd. | Light-emitting container for high-intensity discharge lamp and high-intensity discharge lamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2753914B2 (en) | 1992-02-05 | 1998-05-20 | 株式会社小糸製作所 | Automotive headlights |
| US5952768A (en) * | 1994-10-31 | 1999-09-14 | General Electric Company | Transparent heat conserving coating for metal halide arc tubes |
| DE10217480A1 (en) * | 2002-04-19 | 2003-11-06 | Philips Intellectual Property | Gas discharge lamp |
| DE102004005903A1 (en) * | 2004-02-05 | 2005-08-25 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | High-pressure discharge lamp and method for producing a high-pressure discharge lamp |
| JP5357172B2 (en) * | 2007-11-22 | 2013-12-04 | コーニンクレッカ フィリップス エヌ ヴェ | High intensity discharge lamp |
-
2012
- 2012-09-28 CN CN201280049045.7A patent/CN103843108B/en not_active Expired - Fee Related
- 2012-09-28 WO PCT/IB2012/055193 patent/WO2013050914A1/en active Application Filing
- 2012-09-28 EP EP12788277.7A patent/EP2745308B1/en not_active Not-in-force
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5243501A (en) * | 1990-11-20 | 1993-09-07 | Koito Manufacturing Co., Ltd. | Automotive headlamp |
| US6059435A (en) * | 1997-12-18 | 2000-05-09 | Robert Bosch Gmbh | Headlight of a vehicle for high beam light and low beam light |
| EP0989587A1 (en) * | 1998-09-22 | 2000-03-29 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | High pressure discharge lamp and associated luminaire |
| CN1754246A (en) * | 2003-02-27 | 2006-03-29 | 皇家飞利浦电子股份有限公司 | High-pressure discharge lamp |
| CN101243537A (en) * | 2005-08-11 | 2008-08-13 | 电灯专利信托有限公司 | High-pressure discharge lamp |
| EP2190005A2 (en) * | 2008-11-25 | 2010-05-26 | Ngk Insulators, Ltd. | Light-emitting container for high-intensity discharge lamp and high-intensity discharge lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013050914A1 (en) | 2013-04-11 |
| CN103843108A (en) | 2014-06-04 |
| EP2745308B1 (en) | 2015-12-09 |
| EP2745308A1 (en) | 2014-06-25 |
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