CN104968991A - Light emitting module - Google Patents
Light emitting module Download PDFInfo
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- CN104968991A CN104968991A CN201480007671.9A CN201480007671A CN104968991A CN 104968991 A CN104968991 A CN 104968991A CN 201480007671 A CN201480007671 A CN 201480007671A CN 104968991 A CN104968991 A CN 104968991A
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Abstract
The present invention relates to light emitting module, comprising: a mixing chamber (10) arranged to mix light, the mixing chamber (10) comprising a base (12) having a highly reflective inner surface, a circumferential side wall (14) having a highly reflective inner surface, and a semi-reflective light exit window (16); and at least one light emitting diode (5) arranged on the inner surface of the circumferential side wall (14) such that light emitted from the at least one light emitting diode (5) is emitted into the mixing chamber (10) for mixing of the emitted light within the mixing chamber (10), wherein the semi-reflective light exit window (16) is arranged to couple out light emitted from the at least one light emitting diode (5) and mixed within the mixing chamber (10), wherein the aspect ratio of a width (W) and a height (H) of the mixing chamber (10) is in the range of 1 to 8, wherein the reflectivity of the semi-reflective light exit window (16) is in the range from 30% to 80% for light emitted from the light emitting diode (5).
Description
Technical field
The present invention relates to the light emitting module comprising light mixing chamber and at least one light emitting diode.The invention further relates to the lamp and lighting device that comprise this light emitting module.
Background technology
The field of light emitting module comprises diversified different light emitting module in use light source, structure, optical characteristics etc.Key property for many application of light emitting module is that they should be arranged to provides uniform illumination.Another importance of light emitting module is to provide the needs of the increase of energy saving luminous module.Light emitting module is an energy-conservation example is LED-based light emitting module.But LED is point source, and therefore production provides the LED-based light emitting module of Uniform Illumination to be problematic.
In order to obtain uniform light, various strategy is used.One of strategy is the use based on the solid waveguide go out with coupled structure.But, this waveguide Absorbable rod light, and couple light in solid waveguide and can cause damage.Another kind of strategy is the bottom a large amount of LED being placed in the mixing chamber combined with diffusing globe, for the uniform illumination of acquisition.But, LED is placed in basal surface and can reduces reflectivity and the system effectiveness therefore reduced.In addition, the bottom a large amount of LED being placed in mixing chamber is expensive, and it also can cause superheated due to LED to concentrating of zonule.
Therefore, it is possible to the alternative light emitting module providing Uniform Illumination is needs.
Summary of the invention
The object of the invention is to overcome above-mentioned problem, and provide in efficient and cost-efficient mode the light emitting module that Uniform Illumination can be provided.
According to a first aspect of the invention, this and other object are realized by light emitting module, light emitting module comprises: the mixing chamber being arranged as mixed light, and mixing chamber comprises the light exit window of the base portion with high reverse--bias inner surface, surrounding's sidewall with high reverse--bias inner surface and half reflection; And at least one light emitting diode be arranged on the inner surface of sidewall around, the light launched from least one light emitting diode is made to be launched into mixing chamber, for the light mixing transmitting in mixing chamber, wherein the light exit window of half reflection is arranged to and is coupled out light that is that launch from least one light emitting diode and that mix in mixing chamber, wherein the width of mixing chamber and the aspect ratio of height are in the scope of 1 to 8, wherein for the light launched from light emitting diode, the reflectivity of the light exit window of half reflection is from the scope of 30% to 80%.
The object of the invention is to provide the light emitting module based on efficient LED, and it provides Uniform Illumination.This realizes in the following manner, the light emitting module of the mixing chamber of the light exit window of base portion and sidewall and the half reflection having and comprise high reverse--bias is provided, and side-walls arrange at least one light emitting diode (LED) for by light from the side-emitted of mixing chamber to mixing chamber.By not being that at least one LED is pointed to exit window, but point to the opposite segments of side periphery sidewall, the light improved in mixing chamber mixing can be implemented.And due to the sidewall of mixing chamber and base portion both high reverse--bias, nearly all light launched towards sidewall and base portion all can be reflected and the final light exit window from half reflection is coupled out.Because light exit window is half reflection, some light be incident on this surface can be reflected back in mixing chamber, with the side surface in the mixed room that takes a step forward be coupled out from light exit window and/or base portion reflection, and therefore improve the light mixing in mixing chamber.
Realize optimum efficiency in order to light emitting module and realize the acceptable uniformity (the light mixing namely in mixing chamber) of the illumination provided by light emitting module simultaneously, the important parameter of mixing chamber is the aspect ratio between mixing chamber width and height.Width is relevant with the diameter of surrounding sidewall, and height is relevant with the size (i.e. the height of sidewall) of sidewall.Mixing chamber is higher, and at least one LED can be located more away from light exit window, this means that the risk of the high strength spot the light be coupled out from light combination window decreases.Meanwhile, mixing chamber is wider, and the risk that light can not be uniformly mixed along the whole surface of light exit window is larger.On the other hand, at least one LED is located more away from light combination window, and the efficiency of the light be coupled out from light combination window is lower.Another important parameter is the reflectivity of half reflection light exit window as above.Inventor has been found that, by the aspect ratio between the width of mixing chamber and height to be arranged in the scope of 1 to 8 and the reflectivity of the light exit window of half reflection to be arranged in from the scope of 30% to 80% simultaneously, can realize the efficiency that increases and the acceptable uniformity of illumination be simultaneously coupled out from light emitting module, it can be explained hereinafter in detail.The above-mentioned characteristic of mixing chamber can be provided in light mixing efficiently and light in mixing chamber and efficiently goes out coupling from mixing chamber.Therefore, uniform illumination can be provided according to light emitting module of the present invention in an efficient way.This further effect can be, can reduce for generation of the number of the LED required for the light with certain lux (lux) in light emitting module, for cost reason, this is favourable.
According to embodiment, for the light launched from light emitting diode, the absorbance of the light exit window of half reflection is less than 2%.Therefore the efficiency of light emitting module can be further improved.
According to another embodiment, at least one light emitting diode is arranged to base portion contiguous.As mentioned above, owing to increasing from least one light emitting diode to the distance of light exit window, this can make the uniformity of the light be coupled out from light exit window increase.
According to embodiment, term " high reverse--bias " mean for from the radiative reflectivity of light emitting diode from the scope of 90% to 100%.For increasing light mixing and also for the efficiency increasing the light be coupled out from light emitting module, this may be favourable.
According to another embodiment, mixing chamber is cylinder.The exemplary design of this mixing chamber can simplify the manufacture process of light emitting module.The shape of cylinder can be right circular cylinder, but base portion with around the cross section (intercepting along the plane parallel with base portion) of sidewall be configured as in oval meaning, it also can be shaped as ellipse.Consider the application (such as repacking reason) of light emitting module, the shape of mixing chamber is designed.The cross section of mixing chamber also can have other shape of such as rectangle, square, hexagon etc. and so on.
According to embodiment, light exit window is diffusion.This dazzle for reduction light emitting module can be favourable.
According to some embodiments, the inner surface of base portion is plane.According to other embodiment, the inner surface of base portion is bending and/or has domed shape.According to some embodiments, light exit window is plane.According to other embodiment, light exit window is bending and/or has domed shape.The shape of base portion and light exit window can affect and improve the uniformity of the illumination be coupled out from light emitting module.Such as, if light exit window is bending and/or has the domed shape center of the such as light exit window (in z direction compared to the outward flange height 1cm of light exit window), then this can produce actively impact to the homogeneity of the light be coupled out from light exit window.If if the height of mixing chamber is too little or ratio between the width of mixing chamber and height is too large and can not obtain uniform illumination when planar light exit window, then bend and/or dome-shaped exit window can be used.In this case, the shape of light exit window can be changed to obtain uniform illumination.
According to some embodiments, light emitting module comprises catoptric arrangement further.Catoptric arrangement can be disposed in base portion.This provide the light mixing of the increase in mixing chamber.
According to embodiment, at least one light emitting diode is arranged on the flexible band.This provide the easy assembling of at least one light emitting diode on the sidewall of mixing chamber.In a further embodiment, band is high reverse--bias.Alternatively, additional electronic unit and/or electric wiring are arranged on the flexible band.
According to embodiment, mixing chamber is annular, and comprises the inwall on the high reverse--bias surface had in the face of at least one light emitting diode.In this way, different even light output distributions is provided.In a further embodiment, one or more electronic unit is disposed in the inside of the cavity limited by inwall, thus provides compact luminaire.In an embodiment, inwall is limited by the recess in the base portion of mixing chamber.By using such as standard stamping techniques to make mixing chamber be shaped, this provide the simpler production of mixing chamber.
According to embodiment, luminaire comprises the electronic unit be disposed on the base portion of mixing chamber further.Such as, driver electronics, one or more sensor and/or battery are disposed on base portion.In an embodiment, high reverse--bias paper tinsel covers one or more electronic unit.Alternatively, electronic unit is provided with the material of high reverse--bias, such as white paint.
According to embodiment, luminaire is included in the cavity between base portion and reflection foil further, and one or more electronic unit is arranged in the cavities.This cavity that wherein one or more electronic units are arranged or space cause compact luminaire.In an embodiment, cavity is the projection extended from base portion.In another embodiment, on the whole diameter that cavity extends in mixing chamber or width, and realized by the height that mixing chamber increases.
According to second aspect, the invention provides the lamp of the light emitting module comprised according to a first aspect of the invention.
According to the third aspect, the invention provides the lighting device of the light emitting module that comprises according to a first aspect of the present invention or lamp according to a second aspect of the present invention.
Second can have the Characteristics and advantages identical with first aspect usually with the third aspect.
Note, the present invention relates to all possible combination of the feature recorded in the claims.Usually, all terms used in the claims are explained according to their its ordinary meaning in technical field, unless separately clearly defined herein.
Other object of the present invention, Characteristics and advantages will from following in detail open and manifest from accompanying drawing.
Accompanying drawing explanation
Of the present invention this describes referring now to the accompanying drawing that the embodiment of the present invention is shown in more detail with other side, wherein:
Fig. 1 schematically illustrates the light emitting module according to embodiment;
Fig. 2 illustrates the Efficiency Simulation of the drawn function as uniformity, and it depends on the different aspect ratios of the different reflectivity of light exit window and the width of mixing chamber and height;
Fig. 3 to Fig. 5 illustrates the difference configuration of the light mixing chamber seen in cross section from the side by way of example,
Fig. 6 illustrates the lamp according to embodiment,
Fig. 7 illustrates the lighting device according to embodiment, and
Fig. 8 to Figure 10 illustrates the difference configuration with the light emitting module of light mixing chamber seen in cross section from the side by way of example,
As shown in the figure, the size in layer and region is exaggerated for n-lustrative object, and is therefore provided for the general structure illustrating embodiments of the invention.Run through in full, identical Reference numeral refers to identical element.
Detailed description of the invention
More fully the present invention is described hereinafter referring now to accompanying drawing, presently preferred embodiment of the present invention shown in the drawings.But the present invention can embody in many different forms, and should not be construed as limited to the embodiment set forth herein; Or rather, these embodiments are provided for penetrability and integrality, and fully pass on scope of the present invention to technical staff.
In FIG, the embodiment according to light emitting module 1 of the present invention is schematically shown.Light emitting module 1 comprises mixing chamber 10 and multiple light emitting diode (LED) 5.
Mixing chamber 10 comprises base portion 12, around sidewall 14 and light exit window 16.In the embodiment shown in fig. 1, mixing chamber 10 has cylinder body shape.And base portion 12 and light exit window 16 are avette, and they are circular more accurately.In addition, around sidewall 14 is also avette along the cross section that the plane parallel with base portion 12 intercepts, and is circular more accurately.
Mixing chamber 10 has width W and height H.The height H of mixing chamber 10 is defined as the height of sidewall 14 around.This height H for the mixing chamber 10 of the embodiment shown in Fig. 1 can also be counted as the distance between base portion 12 and light exit window 16.The base surface of the minimum range between the width W of mixing chamber 10 is defined as the corresponding point of two on base surface circumference extends.In the embodiment shown in fig. 1, the width W of mixing chamber 10 is diameters of base portion 12.As mentioned above, the width W of the mixing chamber 10 in the scope of 1 to 8 and the aspect ratio of height H can increase the light mixing of light mixing module 1, and the efficiency of light mixing module 1 can not be reduced to and exceed acceptable situation simultaneously.Perform test, thus assessment depends on efficiency and the uniformity of the light be coupled out from light emitting module of aspect ratio.These test when have 150mm width W mixing chamber 10 perform, in this cylinder example, width is diameter, wherein the reflectivity of light exit window 16 remains on 50%, and wherein the height H of mixing chamber 10 changes between 10 mm and 50 mm, LED 5 is adjacent to base portion 12 and places, this means from LED center to the distance of base portion 12 inner surface be 5mm.Inner surface and the light exit window of base portion 12 are planes.Test shows when height H is increased to 20mm (namely aspect ratio is reduced to 7.5 from 15) from 10mm, from light emitting module 1 launch light contrast (it is the ratio of maximum intensity and minimum intensity, its mean lower contrast correspond to evenly illumination) be reduced to 2 from 18 rapidly.When height H is increased to 45 from 20, contrast is reduced to 1.7 from 2.0.And test shows when height is increased to 50mm from 15mm, and efficiency is more or less reduced to 94.5% from 96.0% linearly.
Base portion 12 has the inner surface of high reverse--bias.High reverse--bias will be counted as the reflectivity had within the scope of 90%-100% for the light launched by multiple LED5.And for the light launched from multiple LED 5, the absorbance of base portion 12 is close to zero.The absorbance had close to zero provides, and the efficiency of light emitting module keeps high.Base portion 12 can be made up of metal or glass, and base portion 12 can be covered by the sheet of reflecting material, or paint has coating reflector.The sheet of reflecting material can be the MCPET paper tinsel that Furukawa Electric manufactures.Coating reflector can be the TiO2 powder particle such as mixed with transparent (clear) silicones.Replace TiO2 powder, Al2O3 and/or BaSO4 powder can be used and be mixed with transparent silicon resin.
Around sidewall 14 has the inner surface of high reverse--bias.The light that high reverse--bias will be counted as being launched by multiple LED 5 has the reflectivity within the scope of 90%-100%.And for the light launched from multiple LED 5, around the absorbance of sidewall 14 is close to zero.The absorbance had close to zero provides, and the efficiency of light emitting module keeps high.Suggestion uses wide printed circuit board (PCB) (PCB), thus covers the whole surrounding sidewall 14 (therefore the width of PCB is identical with the height of surrounding sidewall 14) of light emitting module 1.According to other embodiment, around the comparatively lower part of sidewall 14 is made up of PCB, and remainder is made up of metal or glass.In the mode identical with the inner surface of base portion 12, around sidewall 14 can be covered by the sheet of reflecting material, or can paint coating reflector.When using pieces of reflective material, the place of locating LED 5 in the material should be porose.Mixing chamber 10 (i.e. base portion 12 and surrounding sidewall 14) can be made white as far as possible.This can minimize the efficiency of light absorption in mixing chamber and light emitting module 1.Light exit window 16 is half reflections.More specifically, for the light launched from multiple LED 5, the reflectivity of light exit window 16 is in the scope of 30% to 80%.For the light launched from multiple LED5, the absorbance of light exit window 16 is preferably less than 2%.By having such low absorbance in light exit window 16, the efficiency giving light emitting module 1 keeps high.As non-limiting example, light exit window 16 can be by
make.But, such as
mB-grades, Lexalite
and Flexi-Lume
tMand so on other material also can be used.Also may be used in the scattering particles layer of such as TiOx or AlOx and so in the polymer of such as silicon rubber and so on, and adjust reflectivity by the concentration of particle and/or the thickness of layer.
Light exit window 16 can also comprise beam shaping optics, such as diffusing globe and/or have the layer of the structure for making light polarization and/or collimation.This layer can have the micro-structural for collimated light and/or shaped beam.The example of this layer is from the available BEF of the company of such as 3M and so on (brightness enhancement film) and reflective polarizer films.
Depend on the test of the efficiency of the light emitting module 1 of the reflectivity of light exit window 16 according to assessment, when reflectivity is increased to 90% from 80%, efficiency is reduced to 75% from about 92%.For lower than 80% reflectivity, efficiency is increased to 97% (reflectivity for 20%) from 92%.
Depend on the wave-length coverage of the light launched from LED 5, light exit window 16 can comprise luminescent material further.Luminescent material will clash into the light converting the second color at least partially to of the light of the first color of luminescent material.
Multiple LED 5 is disposed on the inner surface of sidewall 14 around, the light launched is launched and enters mixing chamber 10, mix utilizing emitted light in mixing chamber 10 from least one light emitting diode 5.In addition, as explained below, LED 5 is preferably placed as with base portion 12 contiguous or close, this means that the distance from the center of LED 5 to the inner surface of base portion 12 is 5mm according to some embodiments.This depends on the size of LED 5 certainly.According to further embodiment, LED 5 is larger relative to the position of base portion 12.In an embodiment, multiple LED is arranged on the flexible band, and band is installed on the inner surface of the sidewall of light mixing chamber.Band is high reverse--bias in an embodiment.In another embodiment, one or more electronic unit is additionally provided on reflection and flexible-belt, such as drive electronics and electric wiring.
Multiple LED 5 can be arranged as the light be transmitted in wide wave-length coverage.Such as, each LED in LED 5 can be arranged to transmitting white.According to another example, various LED 5 can be arranged to the light launching particular color.Such as, at least one the be arranged to red-emitting in multiple LED 5, at least one be arranged to transmitting green light in multiple LED 5, and at least one the be arranged to transmitting blue light in multiple LED 5.From these LED 5 launch light thereafter by the internal mix at mixing chamber 10, thus produce white light.According to another example, LED5 can be arranged to transmitting blue light, and if so, light exit window 16 preferably includes luminescent material, and luminescent material converts a part for the blue light clashing into luminescent material the light of another kind of color to.By this mode, the light launched from light emitting module such as will be counted as white light.
In fig. 2, the simulation of efficiency is drawn as the function of uniformity, uniformity is represented as the contrast of the light launched from light emitting module (as mentioned above in the drawings, contrast is defined as the ratio of maximum intensity and minimum intensity), for the width W of various mixing chamber 10 and the aspect ratio W/H (being expressed as D/h in the drawings) of height H, and for having the light exit window 16 of various reflectivity.Simulation is made for the cylinder light emitting module 1 with round base portion 12 and circular light exit window 16.And the absorbance of half reflection light exit window 16 is set to 2%.In addition, multiple LED 5 is placed as with base portion 12 contiguous.
Every bar dotted line represents certain aspect ratio.When light exit window 16 reflectivity with 5 step-length be increased to 90% from 10% time, every bar dotted line is plotted as and contrast and efficiency is shown.Reflectivity as understandable from the above, lower causes higher efficiency and higher contrast (namely lower uniformity).Therefore, the value with every bar dotted line of peak efficiency represents the minimum reflectivity of light exit window 16.
Every bar solid line represents certain reflectivity of light exit window 16.When mixing chamber 10 height H with the step-length of 5mm from 10mm change to 50mm and simultaneously width W remains on 150mm time, every bar line is plotted as and contrast and efficiency is shown.Height H as understandable from the above, less causes higher contrast and higher efficiency.Therefore, the rightmost side value of every bar solid line represents the minimum constructive height H of light mixing chamber 10.
From Fig. 2 it is inferred that, in aspect ratio in the scope of 1 to 8, the reflectivity of simultaneously half reflection light exit window 16 in the scope of 30% to 80%, realize the optimal situation about efficiency and uniformity.
Fig. 3 shows the light mixing chamber 10 seen in cross section from the side by way of example.Light mixing chamber 10 in Fig. 3 has the light exit window 16 of plane and bending base portion 12.
Fig. 4 shows the light mixing chamber 10 seen in cross section from the side by way of example.Light mixing chamber 10 in Fig. 4 has bending light exit window 16 and the base portion 12 of plane.As mentioned above, the shape of light exit window 16 and base portion 12 can affect the uniformity of the light be coupled out from light exit window 16.
Fig. 5 shows the light mixing chamber 10 seen in cross section from the side by way of example.This light mixing chamber 10 is similar to the light mixing chamber shown in Fig. 1.Difference is that catoptric arrangement 20 has been disposed in base portion 12 place of light mixing chamber 10.Light mixing chamber 10 can contain this catoptric arrangement 20 of any number certainly.In that case, catoptric arrangement 20 can be difform.Catoptric arrangement also can be disposed in sidewall 14 place.Catoptric arrangement 20 can with faceted form.Catoptric arrangement 20 can also with the form of surface roughness (i.e. the texture on surface).Other suitable structure any can be used.By adding catoptric arrangement to light mixing chamber 10, the light mixed nature of room 10 can improve further.
Fig. 6 shows the embodiment of the repacking lamp 60 based on above-mentioned concept.Lamp 60 comprises repacking accessory or lamp base portion 62, and it comprises radiator, analog line driver and electrical connection.According to a first aspect of the invention, lamp base portion 62 provides light emitting module 1.It should be noted that the embodiment of lamp is not limited to the lamp as being shaped in Fig. 6.Other shape (image tube shape or conventional bulb) is also possible.And light emitting module 1 can be a part for the more macrostructure provided on lamp base portion 62.The alternative lamp type of such as spotlight or down-ejection type light fixture (down lighter) and so on also can be used.Lamp also can comprise multiple light emitting module 1.
Fig. 7 shows the embodiment of lighting device 70 according to a third aspect of the invention we.Lighting device 70 comprises light emitting module 1 according to a first aspect of the present invention.In other embodiments, lighting device 70 comprises lamp (Reference numeral 60 in Fig. 6) according to a second aspect of the invention.
Fig. 8 shows the embodiment of the light emitting module 1 with light mixing chamber seen in cross section from the side.In this embodiment, one or more electronic unit 30 is provided on the base portion 12 of light mixing chamber, such as such as drive electronics, electric transducer, sensor (such as remote control sensor, light sensor, motion sensor), battery etc.In this embodiment, light reflection foil 21 covers one or more electronic unit 30, but in other embodiments, light reflection foil 21 does not exist, and in that case, one or more electronic unit 30 can be high reverse--bias, such as, by using white paint.
Fig. 9 shows the embodiment of the light emitting module 1 with light mixing chamber seen in cross section from the side.In this embodiment, light mixing chamber comprises with the cavity 18 of the form of the projection extended from base portion 12, and one or more electronic unit 30 is placed in the cavities, and the example of these parts illustrates hereinbefore.Reflection foil 21 is provided as covering the one or more electronic units 30 be placed in room or projection 18.In an embodiment, reflection foil 21 is extensible on whole base portion 12.Cavity or projection 18 can easily fit in terminal box.
In embodiment (not shown), light mixing chamber in height increases, and one or more electronic unit 30 be provided at light mixing chamber base portion 12 on and covered by reflection foil 21, on the whole diameter that reflection foil 21 extends in light mixing chamber between sidewall 14 or width.Increase height provide base portion 12 and for one or more electronic unit 30 reflection foil 21 between shell (housing) or cavity.
In embodiment (not shown), one or more electronic unit 30 is provided at outside, and contiguous with the sidewall 14 of light mixing chamber.In this embodiment, the space of hollow is provided at outside the sidewall 14 of light mixing chamber, and one or more electronic unit 30 is arranged in the space of this hollow.
Figure 10 shows the embodiment of the light emitting module 1 with light mixing chamber seen in cross section from the side.In this embodiment, light mixing chamber is annular and comprises inwall 15, and inwall 15 defines with the room of the recess form of base portion 12 or shell, and wherein one or more electronic units 30 are provided, such as, be arranged on the base portion 12 of light mixing chamber.In this embodiment, the light output of light emitting module 1 is annular.Inwall 15 has the inner surface of high reverse--bias, and this inner surface is the surface in the face of light emitting diode 5.
Those skilled in the art recognizes that the present invention is never limited to the preferred embodiment above described.On the contrary, many amendments and change are possible within the scope of the appended claims.Such as, the shape of base portion is disclosed as circle or ellipse, but other shape of base portion is possible equally.Base portion can such as be configured as square, hexagon or triangle.This cross section for sidewall is same effective.And the cross section of base portion and sidewall can be difform.
In addition, the change of disclosed embodiment can be understood by technical staff and realize in the invention of practice request protection from the study to accompanying drawing, disclosure and appended claims.In the claims, word " comprises " does not get rid of other element or step, and indefinite article "a" or "an" is not got rid of multiple.The fact be only documented in mutually different dependent claims with some measure does not indicate the combination of these measures not to be advantageously used.
Claims (15)
1. a light emitting module (1), comprising:
Be arranged as the mixing chamber (10) of mixed light, described mixing chamber (10) comprises the light exit window (16) of the base portion (12) with high reverse--bias inner surface, surrounding's sidewall (14) with high reverse--bias inner surface and half reflection; And
Be arranged at least one light emitting diode (5) on the described inner surface of described surrounding sidewall (14), the light launched from described at least one light emitting diode (5) is made to be launched into described mixing chamber (10), for the mixing of described light in described mixing chamber (10) of launching
The light exit window (16) of wherein said half reflection be arranged to by launch from described at least one light emitting diode (5) and in described mixing chamber (10) optically-coupled of mixing out,
The aspect ratio of the width (W) of wherein said mixing chamber (10) and height (H) in the scope of 1 to 8,
Wherein for the light launched from described light emitting diode (5), the reflectivity of the light exit window (16) of described half reflection is from the scope of 30% to 80%.
2. light emitting module according to claim 1 (1), wherein for the light launched from described light emitting diode (5), the absorbance of the light exit window (16) of described half reflection is less than 2%.
3. light emitting module according to claim 1 and 2 (1), wherein said at least one light emitting diode (5) is arranged to described base portion (12) contiguous.
4. the light emitting module (1) according to any one in claim 1-3, wherein for the light launched from described light emitting diode (5), high reverse--bias is from the reflection in the scope of 90% to 100%.
5. the light emitting module (1) according to any one in claim 1-4, the cross section that wherein said base portion (12) intercepts along the plane parallel with described base portion (12) with described surrounding sidewall (14) is shaped as circle, ellipse, one of rectangle and hexagon.
6. the light emitting module (1) according to any one in claim 1-5, wherein said smooth exit window (16) is diffusion.
7. the light emitting module (1) according to any one in claim 1-6, wherein said smooth exit window (16) is bending and/or has domed shape.
8. the light emitting module (1) according to any one in claim 1-7, wherein said light emitting module comprises catoptric arrangement (20) further.
9. light emitting module according to claim 8 (1), wherein said catoptric arrangement (20) is disposed in described base portion (12) place.
10. the light emitting module (1) according to any one in claim 1-9, wherein said at least one light emitting diode (5) is arranged on the flexible band.
11. light emitting modules (1) according to any one in claim 1-4 and 6-10, wherein said mixing chamber (10) is annular, and comprises the inwall (15) on the high reverse--bias surface had in the face of described at least one light emitting diode (5).
12. light emitting modules (1) according to any one in claim 1-10, comprise the electronic unit be arranged on described base portion (12) further.
13. light emitting modules (1) according to any one in claim 1-10, be included in the cavity (18) between described base portion (12) and reflection foil (21) further, one or more electronic unit (30) is disposed in described cavity (18).
14. 1 kinds of lamps (60), comprise the light emitting module (1) according to any one in claim 1-13.
15. 1 kinds of lighting devices (70), comprise the light emitting module (1) according to any one in claim 1-13, or comprise lamp according to claim 14 (60).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810119534.4A CN108361571A (en) | 2014-01-02 | 2014-12-23 | Light emitting module |
| CN201480007671.9A CN104968991A (en) | 2014-01-02 | 2014-12-23 | Light emitting module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP14150014 | 2014-01-02 | ||
| EP14150014.0 | 2014-01-02 | ||
| CN2014082002 | 2014-07-10 | ||
| CNPCT/CN2014/082002 | 2014-07-10 | ||
| PCT/EP2014/079103 WO2015101547A1 (en) | 2014-01-02 | 2014-12-23 | Light emitting module |
| CN201480007671.9A CN104968991A (en) | 2014-01-02 | 2014-12-23 | Light emitting module |
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| CN201810119534.4A Division CN108361571A (en) | 2014-01-02 | 2014-12-23 | Light emitting module |
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| CN104968991A true CN104968991A (en) | 2015-10-07 |
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| CN201810119534.4A Pending CN108361571A (en) | 2014-01-02 | 2014-12-23 | Light emitting module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019016217A1 (en) * | 2017-07-21 | 2019-01-24 | Philips Lighting Holding B.V. | Light emitting module |
| CN112449671A (en) * | 2018-07-27 | 2021-03-05 | 昕诺飞控股有限公司 | Collimating lens and lighting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101952646A (en) * | 2008-02-22 | 2011-01-19 | 3M创新有限公司 | Backlights having selected output light flux distributions and display systems using same |
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| WO2019016217A1 (en) * | 2017-07-21 | 2019-01-24 | Philips Lighting Holding B.V. | Light emitting module |
| CN110914588A (en) * | 2017-07-21 | 2020-03-24 | 昕诺飞控股有限公司 | Light emitting module |
| US11028977B2 (en) | 2017-07-21 | 2021-06-08 | Signify Holding B.V. | Light emitting module |
| CN110914588B (en) * | 2017-07-21 | 2021-11-19 | 昕诺飞控股有限公司 | Light emitting module |
| CN112449671A (en) * | 2018-07-27 | 2021-03-05 | 昕诺飞控股有限公司 | Collimating lens and lighting device |
| CN112449671B (en) * | 2018-07-27 | 2022-11-29 | 昕诺飞控股有限公司 | Collimating lens and lighting device |
Also Published As
| Publication number | Publication date |
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| CN108361571A (en) | 2018-08-03 |
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