CN102720954B - Light emitting device and light emitting system - Google Patents
Light emitting device and light emitting system Download PDFInfo
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- CN102720954B CN102720954B CN201210038217.2A CN201210038217A CN102720954B CN 102720954 B CN102720954 B CN 102720954B CN 201210038217 A CN201210038217 A CN 201210038217A CN 102720954 B CN102720954 B CN 102720954B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
- F21V9/38—Combination of two or more photoluminescent elements of different materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/12—Combinations of only three kinds of elements
- F21V13/14—Combinations of only three kinds of elements the elements being filters or photoluminescent elements, reflectors and refractors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
- F21Y2113/10—Combination of light sources of different colours
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
- F21Y2113/20—Combination of light sources of different form
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Abstract
The invention provides a light emitting device and a light emitting system. The light emitting device includes an LED (light emitting diode) used for emitting first light, and the LED includes a light emitting surface and an excitation light source which is used for emitting excitation light. The light emitting device further includes a wavelength conversion layer coating the LED, and the wavelength conversion layer cannot be excited by the first light and can be excited by the excitation light and emit second light at the same time. The light emitting device further includes a light path dividing device, which is arranged between the light paths of the wavelength conversion layer and the excitation light source, and is used for introducing the excitation light to enter the wavelength conversion layer, introducing the light path of mixed light going out from the wavelength conversion layer to be separated from the light path of the excitation light, and forming emergent light of the light emitting device, wherein the mixed light includes the first light and the second light. According to the light emitting device and the light emitting system provided by the invention, by utilizing the light reflection effect of the LED, the first light emitted by the LED and the second light generated by the wavelength conversion layer coating the LED are shared, and meanwhile the light emitting area of the light source is not enlarged.
Description
Technical field
The present invention relates to optical technical field, particularly relate to light-emitting device and luminescent system.
Background technology
At present semiconductor lighting is more and more subject to people's attention, and the monochromatic light light source that wherein can launch such as RGB light etc. has a wide range of applications in Projection Display, decor illumination.
At present, the technology path of realizing monochromatic light light source mainly exists two kinds, the first is to use single color LED (LED, light emitting diode) directly produce each monochromatic light, the second is to excite each monochromatic fluorescent powder to produce monochromatic light by blue light or ultraviolet light-emitting diode, and these two kinds of methods respectively have superiority.The monochromatic light ray spectral width that LED produces is less, therefore bright-colored beautiful, but its problem is that efficiency is relatively low; And the monochromatic efficiency that fluorescent powder produces is higher, but because spectral width seems unsatisfactory compared with its glow color of ambassador.For example, in Fig. 7, represented the comparison of the luminescent spectrum 701 of red-light LED and a kind of luminescent spectrum 702 of red fluorescence powder.
A solution is, uses monochromatic LED and homochromy fluorescent powder light source simultaneously, so that the advantages of the two is got up, realizes better combination property.Yet as can be seen from Figure 7, because color approaches, the luminescent spectrum of monochromatic LED and homochromy fluorescent powder exists more overlapping, therefore cannot use the conventional splicer parts such as interference filter to utilize the difference of two kinds of light wavelengths to merge into a branch of.If therefore wanting to realize two kinds of light uses jointly, two kinds of light sources must be placed side by side, this must increase the light-emitting area of light source and the diameter of section of light beam, and then significantly reduces the energy density of light beam, and this is difficult to accept for fields such as Projection Display and projection illumination.
Therefore, need a kind of light-emitting device, under the prerequisite of light-emitting area that does not expand light emitting source, realize sharing of homochromy LED and light-emitting phosphor.
Summary of the invention
The technical problem underlying that the present invention solves is to provide and makes homochromy light emitting diode and fluorescent powder under the prerequisite of light-emitting area that does not expand light emitting source, realize shared light-emitting device and luminescent system.
The present invention proposes a kind of light-emitting device, and this light emitting diode comprises light-emitting area for launching the light emitting diode of the first light to comprise at least one, and for launching the excitation source of exciting light.Also comprise the wavelength conversion layer in the light-emitting area that is coated in light emitting diode, this wavelength conversion layer can not be excited by the first light, can be excited optical excitation launch the second light of this wavelength conversion layer simultaneously.This light-emitting device also comprises the light path discriminating device between wavelength conversion layer and the light path of excitation source, for exciting light guiding is incident in to this wavelength conversion layer, guide the emergent light that separates and form light-emitting device from least part of mixed light of this wavelength conversion layer outgoing and the light path that is incident in the exciting light of this wavelength conversion layer simultaneously.Mixed light comprises the first light and the second light.
The present invention also proposes a kind of luminescent system, comprise above-mentioned light-emitting device, also comprise driving control device, this driving control device is for independently controlling light emitting diode and the excitation source of light-emitting device, and then the luminous flux of realizing the first light and the second light in the emergent light of the luminescent system independent object of controlling respectively.
In light-emitting device of the present invention and luminescent system, utilize the reflex of light emitting diode self to light, sharing of the second light that the first light of having realized this light emitting diode transmitting and the wavelength conversion layer that is coated in this LED surface produce, does not expand the light-emitting area of light source simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the first embodiment of the present invention;
Fig. 1 a is the schematic diagram of a variant embodiment of the first embodiment of the present invention;
Fig. 2 is the schematic diagram of the second embodiment of the present invention;
Fig. 3 is the schematic diagram of the third embodiment of the present invention;
Fig. 4 is the schematic diagram of the fourth embodiment of the present invention;
Fig. 5 is the schematic diagram of the fifth embodiment of the present invention;
Fig. 6 is the schematic diagram of the sixth embodiment of the present invention;
Fig. 7 be red LED luminescent spectrum and a kind of red fluorescence powder emission spectrum for example.
Embodiment
The structure of the first embodiment of the present invention as shown in Figure 1.Light-emitting device 100 comprises that this light emitting diode 101 comprises light-emitting area 101a for launching the light emitting diode 101 of the first light 111; Also comprise for launching the excitation source 105 of exciting light 113.On the light-emitting area 101a of light emitting diode 101, be provided with wavelength conversion layer 103, this wavelength conversion layer 103 can not be excited by the first light 111, and this wavelength conversion layer light 113 that can be excited excites and launches the second light 115 simultaneously.This light-emitting device 100 also comprises the light path discriminating device 107 between wavelength conversion layer 103 and the light path of excitation source 105, this light path discriminating device 107 is for being incident in wavelength conversion layer 103 by exciting light 113 guiding, guide the emergent light that separates and form light-emitting device from least part of mixed light of these wavelength conversion layer 103 outgoing and the light path that is incident in the exciting light 113 of this wavelength conversion layer, wherein mixed light comprises the first light 111 and the second light 115 simultaneously.
Application the present invention, can realize as luminous in homochromy light emitting diode and material for transformation of wave length under the said prerequisite not expanding light source luminescent area in background technology sharing.Concrete principle of work is as follows:
In the present invention, the first light 111 that light emitting diode 101 sends from its light-emitting area 101a is first incident in wavelength conversion layer 103.Because wavelength conversion layer 103 can not be excited by the first light 111, so 103 pairs of the first light 111 of this wavelength conversion layer do not absorb or only have a small absorption.A part in the first light 111 can also form emergent lights through light path discriminating device 107 by this wavelength conversion layer 103 of direct transmission, remaining part can be reflected back light emitting diode 101 by wavelength conversion layer 103, and after secondary reflection, be again incident in wavelength conversion layer 103 again by light emitting diode 101, wherein part luminous energy transmission rest light energy is reflected back toward light emitting diode again, so after circulation, light emitting diode 101 sends the first light 111 and is finally able to from wavelength conversion layer 103 outgoing, and forms emergent light after light path discriminating device 107.
Meanwhile, wavelength conversion layer 103 is excited and stimulated emission the second light 115 by the exciting light 113 through 107 guiding of light path discriminating device.In the second light, a part is directly to the heteropleural transmitting of light emitting diode 101, and this part light forms emergent light after light path discriminating device 107; Another part can incide light emitting diode 101 inside, and be incident in wavelength conversion layer 103 after light emitting diode 101 reflections, wherein part luminous energy transmission rest light energy is reflected back toward light emitting diode again, so after circulation, the second light 115 is finally able to from wavelength conversion layer 103 outgoing, and forms emergent light after light path discriminating device 107.
In sum, the present invention utilizes the reflex of light emitting diode self to light, sharing of the second light that the first light of having realized this light emitting diode transmitting and the wavelength conversion layer that is coated in this LED surface produce, light-emitting area is with the light-emitting area of light emitting diode identical simultaneously.
What deserves to be explained is, light emitting diode has reflex to light, this is because light emitting diode inside has reflection horizon, thereby this reflection horizon is reflected to front and made the light of light emitting diode all from its light-emitting area, go out to shoot out for the light of surface launching that the luminescent layer of light emitting diode is supported or opposed.The luminosity that this can improve light emitting diode greatly, belongs to prior art.
In the present invention, wavelength conversion layer is arranged in the light-emitting area of light emitting diode, and this is also existing technology, has various ways to realize.For example, after material for transformation of wave length being mixed with cementing agent, use the method for printing to be coated in LED surface formation wavelength conversion layer, after for example material for transformation of wave length being mixed with liquid solvent again, with spray gun, be sprayed on LED surface and form wavelength conversion layer.
In the light-emitting device 100 of the present embodiment, also comprise condenser lens 109, it is for focusing on wavelength conversion layer 103 by exciting light 113, simultaneously for collecting the first light 111 and the second light 115 and by its collimation.In light-emitting device, the use of condenser lens 109 can improve system effectiveness, is a kind of embodiment of optimization.
In the present invention, light path discriminating device 107, for the mixed light that comprises the first light 111 and the second light 115 is separated with the light path of exciting light 113, prevents that this mixed light is directly incident in excitation source 105 and causes loss.In the present embodiment, light path discriminating device is interference filter, this interference filter 107 guides the emergent light of the mixed light formation light-emitting device 100 that comprises the first light 111 and the second light 115 in the mode of reflection, be incident in the surface of wavelength conversion layer 103 with the mode directs excitation light 113 of transmission simultaneously.
Concrete example, light emitting diode 101 is red light-emitting diode, excitation source 105 is blue light or ultraviolet light-emitting diode light source or blue light or ultraviolet laser diode light source, wavelength conversion layer 103 comprises red wavelength transition material, its blue light or ultraviolet excitation that light source sends that can be excited.Red wavelength transition material is excited to produce ruddiness, known according to the principle of work of material for transformation of wave length, and the ruddiness that it can not be produced by red light-emitting diode excites.Now, blue light or ultraviolet light that interference filter 107 transmission excitation sources 105 send reflect ruddiness first light 111 of light emitting diode 101 transmittings and ruddiness second light 115 of wavelength conversion layer 103 transmittings simultaneously.
In this example, wavelength conversion layer 103 can also comprise yellow wavelengths transition material, this material stimulated emission gold-tinted; Because the wavelength ratio ruddiness of gold-tinted is short, so the ruddiness that this yellow wavelengths transition material can not be launched by light emitting diode 101 excites.Now, blue light or ultraviolet light that interference filter 107 transmission excitation sources 105 send reflect ruddiness first light 111 of light emitting diode 101 transmittings and gold-tinted second light 115 of wavelength conversion layer 103 transmittings simultaneously.
Light emitting diode 101 can also be green light LED, and wavelength conversion layer can comprise yellow or green wavelength transition material.Now, blue light or ultraviolet light that interference filter 107 transmission excitation sources 105 send reflect green glow first light 111 of light emitting diode 101 transmittings and gold-tinted or green glow second light 115 of wavelength conversion layer 103 transmittings simultaneously.Wavelength conversion layer can also comprise blue light wavelength transition material, exciting light 113 is ultraviolet light, now, the ultraviolet light that interference filter 107 transmission excitation sources 105 send reflects green glow first light 111 of light emitting diode 101 transmittings and blue light second light 115 of wavelength conversion layer 103 transmittings simultaneously.
What deserves to be explained is, above-mentionedly the present invention is not construed as limiting for example.
In the present embodiment, interference filter 107 can also comprise the first light 111 and the second light 115 mixed lights in reflecting part, does like this and can reach the object of adjusting mixed light luminescent spectrum.For example, in conjunction with two kinds of red-light spectrum shown in Fig. 7, if spectral component more than 107 reflection 600 nanometers of interference filter, the spectrum 701 of red light-emitting diode is almost all reflected the emergent light that becomes light-emitting device, partially yellow spectral component in the luminescent spectrum 702 of red wavelength conversion layer below 600 nanometers can transmission interference filter 107 and can not become emergent light, and the spectral component that is only greater than 600 nanometers just can be reflected and become emergent light.So just make the color of ruddiness of mixing of outgoing more bright-coloured.
In the present embodiment, as previously mentioned, the intensity of the first light 111 in the emergent light of light-emitting device 100 is decided by the luminous intensity of light emitting diode 101, the luminous intensity of the second light 115 is decided by the luminous intensity of excitation source 105 simultaneously, therefore further, the present invention also proposes a kind of luminescent system, this luminescent system comprises above-mentioned light-emitting device, also comprise driving control device, this driving control device is for independently controlling the light emitting diode 101 and excitation source 105 of light-emitting device, and then the luminous flux of realizing the first light 111 and the second light 115 in the emergent light of this luminescent system independent object of controlling respectively.What deserves to be explained is, this luminescent system also can comprise the light-emitting device of giving an example in embodiment below.
The independent beneficial effect of controlling is as follows respectively to realize the luminous flux of the first light 111 and the second light 115 in emergent light: according to described in background technology, the first light of light emitting diode transmitting is different from the color of the second light of wavelength conversion layer transmitting, therefore both powers of independent regulation can obtain the color of different mixed lights, and when two kinds of light can be mixed into white light, regulate power between the two can obtain the colour temperature of different white lights.
Controlling light emitting diode 101 has much with the method for the luminous intensity of excitation source 105, for example control its size of current, or control its dutycycle when pulsed drive, even can control light emitting diode 101 and alternately light with excitation source 105, this belongs to prior art, does not repeat herein.
Also there is a distortion in the present embodiment, its structure as shown in Figure 1a.Different from the embodiment shown in Fig. 1, in this distortion, also comprise light source 106, the light 117 of its transmitting can become through 107 guiding of light path discriminating device the emergent light of this light-emitting device.In this distortion, light emitting diode is red light-emitting diode, wavelength conversion layer comprises yellow or yellow green material for transformation of wave length, light source 106 is blue light-emitting diode or blue laser light source, therefore in the emergent light of this light-emitting device, comprise the composition of blue light, gold-tinted or green-yellow light and ruddiness, the white light forming like this has higher colour rendering index simultaneously.Same, light emitting diode, excitation source and light source 106 all can independently be controlled, to realize the adjusting of the chromaticity coordinates of ejecting white light.
In the present embodiment, the light 117 of light source 106 transmitting is by light path discriminating device 107 and the emergent light of light-emitting device jointly that mixes after actinic light that comprises the first light and the second light.This is a kind of preferred embodiment, and it has succinct structure; In fact the light 117 of light source 106 transmitting also can be otherwise with mix actinic light, for example in the light path rear end of light path discriminating device 107, a light splitting optical filter is set and closes light.
In the present embodiment, light path discriminating device 107 transmission exciting lights 113 reflect the first light 111 and the second light 115 simultaneously at least partly; Be understandable that, light path discriminating device 107 is transmission the first light 111 and the second light 115 at least partly also, reflects exciting light 113 simultaneously, and this can realize the effect that the light path of the first light 111 and the second light 115 and exciting light 113 is separated equally.
Light-emitting device in the present embodiment comprises a light emitting diode, in fact can comprise many light emitting diodes, these light emitting diodes form an array, spacing between the light emitting diode that each light emitting diode is adjacent is very little, makes an area source of the common formation of light-emitting area of each light emitting diode in this light emitting diode matrix.In general, in such array, the spacing between the light emitting diode that each light emitting diode is adjacent be less than light emitting diode light-emitting area circumscribed circle diameter 50%.
Light-emitting device in the first embodiment of the present invention, has been used interference filter as light path discriminating device.In fact can also there is other mode to realize the function of light path discriminating device, in the second to the 6th embodiment below, be illustrated respectively.What deserves to be explained is, the feature in the first embodiment is described and is equally applicable to for example in the following examples, therefore no longer repeat specification in the following description.
The structure of the second embodiment of the present invention as shown in Figure 2.In light-emitting device 200, light path discriminating device 207 is catoptron, these catoptron 207 reflection exciting lights 213 make it be incident in wavelength conversion layer 203, comprise that the mixed light of the first light 211 and the second light 215 forms the emergent light of light-emitting device 200 from the surrounding outgoing of this catoptron 207 simultaneously.
Different from the first embodiment, in the present embodiment, mixed light also comprises the absorbed residual excitation light 217 that do not have being reflected by wavelength conversion layer 203, and this part light also can form from the surrounding outgoing of catoptron 207 emergent light of light-emitting device 200.When light emitting diode is red light-emitting diode, excitation source is blue light source, when wavelength conversion layer comprises yellow or yellow green material for transformation of wave length, in the emergent light of the light-emitting device of the present embodiment, just comprised the composition of blue light, gold-tinted or green-yellow light and ruddiness simultaneously, compare with the first embodiment, the light-emitting device in the present embodiment does not need to increase another blue light source just can realize the white light of high color rendering index (CRI).Following embodiment compares and has this advantage with the first embodiment.
The shortcoming of the present embodiment is, understands some and be incident in the surface of catoptron 207 and be reflected formation loss in mixed light.As long as catoptron 207 is enough little, the energy of this part light just can be ignored; As long as therefore can effectively reflect exciting light to wavelength conversion layer in actual applications, the size of this catoptron is the smaller the better.
The structure of the third embodiment of the present invention as shown in Figure 3.In light-emitting device 300, light path discriminating device is the reflection unit 307 with through hole, and this reflection unit 307 comprises through hole and this through hole 307a reflecting surface around.Exciting light 313 is incident in wavelength conversion layer 303 through through hole 307a, comprises that the mixed light of the first light 311 and the second light 315 is reflected and form the emergent light of light-emitting device 300 by the reflecting surface of this through hole surrounding.In the present embodiment, mixed light also comprises the absorbed residual excitation light 317 that do not have being reflected by wavelength conversion layer 303.
What deserves to be explained is, in mixed light, having sub-fraction can not be reflected into as emergent light through the through hole 307a of reflection unit 307, as long as therefore can guarantee passing of exciting light 313, the size of through hole 307a is the smaller the better.In real work, the loss of this part light is negligible often.
In the present embodiment, with the shape of the reflection unit 307 of through hole, be plane, in the of the present invention the 4th and the 5th embodiment, the shape of this reflection unit is arc.
The structure of the fourth embodiment of the present invention as shown in Figure 4.In this embodiment, reflection unit 407 with through hole is paraboloidals, different from the 3rd embodiment, mixed light focuses on this paraboloidal focus after inciding this reflection unit 407, and in some application scenario, this utilization for follow-up light source luminescent is helpful.
The structure of the fifth embodiment of the present invention as shown in Figure 5.In this embodiment, reflection unit 507 with through hole is semispheres, light emitting diode 501 with and light-emitting area on wavelength conversion layer 503 be positioned at this hemispheric centre of sphere near, and the mixed light that goes out to shoot out from this wavelength conversion layer 503 focuses on the emergent light that one point union forms light-emitting device 500 being reflected by the reflecting surface of through hole surrounding, the position of the placement of this focus point and light emitting diode 501 is symmetrical about this hemispheric centre of sphere.
Preferably, the light-emitting device 500 in the present embodiment also comprises light collecting device 508, and this light collecting device 508 is for collecting the emergent light after focusing.In the present embodiment, light collecting device 508 is collecting lenses, and in fact it can also have other form, for example integrating rod or taper integrating rod.This is prior art, does not repeat herein.
The reflection unit 507 with through hole in the light-emitting device of the present embodiment can also be a semielliptical shape, now light emitting diode 501 with and light-emitting area on wavelength conversion layer 503 be positioned in a focus of this semielliptical shape, and the mixed light that goes out to shoot out from wavelength conversion layer 503 is focused in another focus of this half ellipsoidal surface by the reflecting surface of through hole surrounding reflection.
In conjunction with the 4th and the 5th embodiment, be appreciated that the reflection unit with through hole can be a variety of arc-shaped curved surfaces, be not limited to above giving an example.
The structure of the sixth embodiment of the present invention as shown in Figure 6.Shape with the reflection unit 607 of through hole is stepped.In fact, this stair-stepping profile is comprised of two parts curved surface 607a and 607b.This two parts curved surface is respectively a part for two concentric spheres or confocal ellipsoid; Reflection post-concentration Jiao who is appreciated that this two parts curved surface of mixed light process in conjunction with the 5th embodiment is in same position.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes instructions of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (13)
1. a light-emitting device, is characterized in that, comprising:
At least one for launching the light emitting diode of the first light, and this light emitting diode comprises light-emitting area;
For launching the excitation source of exciting light;
Be arranged on the wavelength conversion layer in the light-emitting area of light emitting diode, this wavelength conversion layer can not be excited by described the first light, and this wavelength conversion layer can and be launched the second light by described excitation simultaneously;
Light path discriminating device between described wavelength conversion layer and the light path of described excitation source, for described exciting light guiding is incident in to this wavelength conversion layer, guide the emergent light that separates and form light-emitting device from least part of mixed light of this wavelength conversion layer outgoing and the light path that is incident in the exciting light of this wavelength conversion layer simultaneously, described mixed light comprises the first light and the second light, and its light-emitting area is identical with the light-emitting area of described light emitting diode.
2. light-emitting device according to claim 1, is characterized in that, described the first light is ruddiness.
3. light-emitting device according to claim 2, is characterized in that, described wavelength conversion layer comprises one or more in red wavelength transition material, yellow wavelengths transition material, green wavelength transition material and blue wavelength transition material.
4. light-emitting device according to claim 1, is characterized in that, described the first light is green glow.
5. light-emitting device according to claim 4, is characterized in that, described wavelength conversion layer comprises one or more in yellow wavelengths transition material, green wavelength transition material and blue wavelength transition material.
6. light-emitting device according to claim 1, is characterized in that, described light path discriminating device comprises interference filter; This interference filter reflects exciting light at least part of transmission of mixed light simultaneously, or transmission is reflected mixed light simultaneously at least partly to exciting light.
7. light-emitting device according to claim 6, is characterized in that, also comprises that the 3rd light and described mixed light form the emergent light of light-emitting device jointly for launching the primary light source of the 3rd light.
8. light-emitting device according to claim 1, it is characterized in that, described light path discriminating device comprises catoptron, this catoptron reflection exciting light makes it be incident in wavelength conversion layer, forms the emergent light of light-emitting device at least partly from the mixed light of wavelength conversion layer outgoing from the surrounding outgoing of this catoptron simultaneously.
9. light-emitting device according to claim 1, is characterized in that, described light path discriminating device comprises the reflection unit with through hole, and this reflection unit comprises through hole and this through hole reflecting surface around; Described exciting light is incident in wavelength conversion layer through through hole, from least part of mixed light of wavelength conversion layer outgoing, is reflected and form the emergent light of light-emitting device by the reflecting surface of this through hole surrounding.
10. light-emitting device according to claim 8 or claim 9, is characterized in that, described mixed light also comprises the absorbed residual excitation light that do not have being reflected by wavelength conversion layer.
11. light-emitting devices according to claim 9, is characterized in that, the described reflection unit with through hole be shaped as plane, arc or stepped.
12. light-emitting devices according to claim 1, it is characterized in that, described at least one light emitting diode forms an array, the spacing between the light emitting diode that each light emitting diode is adjacent be less than light emitting diode described light-emitting area circumscribed circle diameter 50%.
13. 1 kinds of luminescent systems, it is characterized in that, comprise the light-emitting device described in any one in claim 1 to 12, also comprise driving control device, this driving control device is for independently controlling light emitting diode and the excitation source of light-emitting device, and then the luminous flux of realizing the first light and the second light in the emergent light of the luminescent system independent object of controlling respectively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210038217.2A CN102720954B (en) | 2012-01-14 | 2012-02-20 | Light emitting device and light emitting system |
| PCT/CN2012/084923 WO2013104211A1 (en) | 2012-01-14 | 2012-11-20 | Light emitting device and system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210011262.9 | 2012-01-14 | ||
| CN201210011262 | 2012-01-14 | ||
| CN201210038217.2A CN102720954B (en) | 2012-01-14 | 2012-02-20 | Light emitting device and light emitting system |
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| CN102720954A CN102720954A (en) | 2012-10-10 |
| CN102720954B true CN102720954B (en) | 2014-08-27 |
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| CN201210038217.2A Active CN102720954B (en) | 2012-01-14 | 2012-02-20 | Light emitting device and light emitting system |
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| WO (1) | WO2013104211A1 (en) |
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| CN106030403A (en) * | 2014-02-27 | 2016-10-12 | 三菱电机株式会社 | Light source apparatus |
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Also Published As
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| CN102720954A (en) | 2012-10-10 |
| WO2013104211A1 (en) | 2013-07-18 |
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