CN103807627A - Light emitting module and illumination device with light emitting module - Google Patents
Light emitting module and illumination device with light emitting module Download PDFInfo
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- CN103807627A CN103807627A CN201210454363.3A CN201210454363A CN103807627A CN 103807627 A CN103807627 A CN 103807627A CN 201210454363 A CN201210454363 A CN 201210454363A CN 103807627 A CN103807627 A CN 103807627A
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Abstract
The invention relates to a light emitting module (10), which comprises a circuit board (1), at least three light sources (2) and at least three optical devices (3), wherein the light source (2) are arranged at one side of the circuit board (1), and each optical device (3) is respectively matched with each light source (2). The light emitting module is characterized in that the three optical devices (3) are used for respectively generating sub-spots, and at least parts of sub-spots are overlapped to form uniform spots. The invention also relates to an illumination device with the light emitting module.
Description
Technical field
The present invention relates to a kind of light emitting module and the lighting device that comprises this light emitting module.
Background technology
LED light emitting module has advantages of efficient energy-saving, therefore in current lighting field, occupies an leading position.Along with the development of lighting engineering, the remodeling lamp take LED as light source progressively replace fluorescent lamps be widely used in various occasions.For example, as in the LED light emitting module of backlight, each LED light source is equipped with independently lens, and for realizing predetermined light distribution patterns, this lens are for example the bat aerofoil profile lens (Batwing lens) that are widely used.This lens are design substantially axisymmetrically in the prior art, that is to say, lens are for receiving the inner surface of incident light and all having the profile about central axis symmetry as the outer surface of exit facet.
In the time only thering are the lens of a this complete axial symmetry design on light emitting module, can realize bat-wing hot spot symmetrically by single lens, therefore this lens have limited the brightness light output quantity in other words of light emitting module to a certain extent.While multiple light source of being furnished with this lens being set on circuit board when the brightness in order to improve light emitting module, uniform hot spot is difficult to reentry.Therefore need existing light emitting module, particularly LED light emitting module further improves, to meet user's requirement.
Summary of the invention
For solving the problems of the technologies described above, the present invention proposes a kind of novel light emitting module.That this light emitting module has advantages of is simple in structure, energy-efficient, range of exposures is large.
A kind of light emitting module is proposed according to the present invention, comprise have fringe region and middle section circuit board, be arranged at least three light sources of described circuit board one side and attach troops to a unit respectively at least three optics of each light source, it is characterized in that, described multiple optics is designed for respectively and produces sub-hot spot, and described sub-hot spot is overlapping to form uniform hot spot at least partly.
In design of the present invention, each light source produces the hot spot of self through the optics of attaching troops to a unit, and these hot spots form the hot spot of sealing as the sub-hot spot common combination of light emitting module, wherein preferably between adjacent two sub-hot spots, have an overlapping region.Can form thus the uniform hot spot of for example triangle, quadrangle, circle or other shapes by means of three, four or multiple optics.
In a preferred design according to the present invention, described light source is arranged as annular array, and described optical device designs is for making the light beam more than the middle section of annular array described in directive through the light beam of the perimeter of annular array described in each described optics directive.In the case, be greater than the luminous flux towards its middle section through each optics towards the luminous flux of the perimeter of described annular array.Because multiple optics are arranged into annular, and each optics all can realize asymmetrical sub-hot spot, and therefore this little hot spot can be combined into a complete and uniform hot spot naturally.
In a preferred design according to the present invention, described optics is lens, described lens have the first axle, the second axle and the 3rd axle perpendicular to described the first axle, and described the first and second axis limits go out the basal plane of described lens, and described the 3rd axle is perpendicular to described basal plane.Preferably, described lens comprise the plane of incidence, and the described plane of incidence forms the first curve on the first vertical planes described lens, by described the first axle and described the 3rd axis limit, and described the first curve is asymmetric about described the 3rd axle.In traditional light emitting module, the lens of installing on circuit board be usually symmetric design, for example sphere lens.This lens have a unique optical axis conventionally, extend in the direction perpendicular to circuit board through the wide part of this lens outgoing, and this can only realize a kind of uniform light spots centered by optical axis.Light emitting module according to the present invention has the lens of asymmetric design, can be by the emergent light from light source towards desirable irradiation area by means of this asymmetrical lens.These emergent lights extend along for example two optical axises respectively, to form targetedly the sub-hot spot that covers specific region.
In a preferred design according to the present invention, described optics comprises towards the first sub-plane of incidence of described middle section with towards the second sub-plane of incidence of described perimeter, the described first sub-plane of incidence and the described second sub-plane of incidence are connected to form the asymmetrical arc plane of incidence smoothly, and the described plane of incidence is about asymmetric by the second vertical plane of described the second axle and described the 3rd axis limit.Incident light from light source is divided into two groups of emergent lights towards different directions by the first and second sub-planes of incidence, through the perimeter of the light directive annular array of the second sub-plane of incidence, can increase thus the irradiated area of light emitting module.Preferably, the described first sub-plane of incidence and the described second sub-plane of incidence are respectively about described the first vertical plane symmetry.
In a preferred design according to the present invention, the first sub-plane of incidence forms the second curve on described the first vertical plane, the described second sub-plane of incidence forms the 3rd curve on described the first vertical plane, be connected to form described the first curve described the second curve and described the 3rd curve smoothing, between described the second curve and described the first axle, there is the first angle, between described the 3rd curve and described the first axle, have the second angle, described the first angle is greater than described the second angle.Can guarantee that thus most of light of light source is through the perimeter of the second sub-plane of incidence directive annular array, the middle section of a small amount of light directive annular array.
In a preferred design according to the present invention, described the second curve and described the 3rd curve are SPLs.Also can adjust according to application requirements the shape of the first and second sub-planes of incidence.
In a preferred design according to the present invention, described optics first plane of incidence, the described second sub-plane of incidence and described circuit board limit the container cavity that holds described light source.Optics by means of design like this can obtain the incident light from light source as far as possible efficiently.
In a preferred design according to the present invention, described optics comprises exit facet, and described exit facet forms the 4th curve on described the first vertical plane, and described the 4th curve is about described the 3rd axial symmetry of described the second lens.Preferably, described exit facet is sphere.
In preferably designing according to of the present invention another, described at least three optics are evenly arranged in circumferential direction.Upwards evenly be arranged into annular optics week and can make the sub-light spot group merging producing separately be superimposed as the higher annular of brightness, be preferably circular light spot, thus can be in the brightness of guaranteeing to improve under the prerequisite that light is evenly distributed light emitting module.
The invention still further relates to a kind of lighting device, it is characterized in that, comprise above-mentioned light emitting module.When light source in light emitting module is LED light source, this lighting device can be used as the lighting device take LED as backlight, and has uniform illuminating effect.
Should be appreciated that, above generality is described and the following detailed description is all enumerated and illustrative, and object is for the further instruction that the invention provides to claimed.
Accompanying drawing explanation
Accompanying drawing forms the part of this description, for helping further to understand the present invention.These accompanying drawings illustrate embodiments of the invention, and are used for illustrating principle of the present invention together with description.Identical parts represent with identical label in the accompanying drawings.Shown in figure:
Fig. 1 shows according to the sectional view of the first embodiment of light emitting module 10 of the present invention;
Fig. 2 shows the perspective bottom view of the optics 3 in Fig. 1;
Fig. 3 shows the first profile of the optics 3 in Fig. 1;
Fig. 4 shows the second profile of the optics 3 in Fig. 1;
Fig. 5 shows according to the light distribution map of the first embodiment of light emitting module 10 of the present invention.
The specific embodiment
In being discussed in more detail below, reference forms the accompanying drawing of the part of this description, wherein, shows and can implement specific embodiments of the invention in the mode of illustration.About figure, use with reference to the direction of described accompanying drawing such as " top ", " end ", " interior ", " outward " directional terms.Because the assembly of the embodiment of the present invention can be placed on many different directions, thus direction term only for explanation, and without any restriction the meaning.It should be understood that and can use other embodiment, and can carry out structure or logical changes under the prerequisite that does not deviate from scope of the present invention.So, describes in detail and should not be understood to the restrictive meaning below, and the present invention is defined by the appended claims.
It should be understood that the feature of different exemplary embodiment described herein can be bonded to each other if do not have other dated especially.
Fig. 1 shows according to the sectional view of the first embodiment of light emitting module 10 of the present invention, this light emitting module 10 comprises circuit board 1 and at least three light sources 2 that are arranged on circuit board 1, wherein each light source 2 is furnished with respectively the optics 3 that is designed to lens, and therefore lens correspondingly have label " 3 " in the present embodiment.
For light emitting module 10, for the brightness of guaranteeing to reach predetermined on the one hand, can also realize on the other hand uniform hot spot, therefore adopt the method that multiple sub-hot spots are combined in circumferential direction to obtain a complete and uniform hot spot, wherein adjacent two sub-hot spots are overlapping at least in part.In the present embodiment, the quantity of light source 2 and the lens 3 that mate with it is respectively 6, and these light source 2/ lens 3 circularize array (two light sources, 2/ lens 3 that are oppositely arranged are only shown in figure) being upwards evenly arranged in week.
In addition,, in order to obtain as far as possible efficiently the incident light from light source 2, the plane of incidence of lens 3 and circuit board 1 can be limited to the container cavity that holds light source 2.
The asymmetric profile that can identify exactly the plane of incidence of lens 3 in conjunction with the stereogram of the lens 3 shown in Fig. 2-4 and the first and second profiles, wherein Fig. 3 and Fig. 4 are two sections that are perpendicular to one another.
By finding out in Fig. 2, the projection of the plane of incidence of lens 3 on horizontal plane has water-drop-shaped profile, also just says, the plane of incidence forms level and smooth closed SPL on the bottom surface of lens 3, and this closed curve is water-drop-shaped.As shown in Figure 3 and Figure 4, lens 3 have the first axle X, the second axle Y and the 3rd axle Z perpendicular to the first axle X, the first and second axle X, and Y limits the basal plane X-Y of lens 3, and the 3rd axle Z is perpendicular to basal plane X-Y.
The asymmetrical plane of incidence upper first curve that forms of the first vertical plane X-Z shown in Figure 3 of lens 3, the first curve is asymmetric about the 3rd axle Z.In the present invention, the plane of incidence is included in the first sub-plane of incidence shown in Fig. 3 and Fig. 4 and the second sub-plane of incidence shown in Figure 3 only.The first sub-incident surface A 1 forms the second curve on the first vertical plane X-Z, and the second sub-incident surface A 2 forms the 3rd curve on the first vertical plane X-Z, can be limited by SPL second and the 3rd curve smoothing be connected to form the first curve.
In order to make the region predetermined from the light beam directive of light source 2, i.e. zone line, lens 3 design and have towards middle section R1(referring to Fig. 1 especially) the first sub-incident surface A 1 and towards the outside region R2(referring to Fig. 1) the second sub-incident surface A 2.Between the second curve and the first axle X, form and between the first angle α 1, the three curve and the first axle X, form the second angle α 2, the first angle α 1 and be greater than the second angle α 2.Can obtain thus the first sub-incident surface A 1 and the second relatively large sub-incident surface A 2 of area that area is relatively little.
In addition, lens 3 also comprise exit facet A3, be designed to the exit facet first vertical plane X-Z and upper identical the 4th curve and the 5th curve of profile that form of the first vertical plane Z-Y shown in Fig. 4 shown in Figure 3 of sphere, that is to say, no matter the 4th curve that forms on the first vertical plane X-Z of exit facet A3 or the 5th curve forming on the first vertical plane Z-Y, all about the 3rd axle Z symmetry.
Fig. 5 shows according to the light distribution map of the first embodiment of light emitting module 10 of the present invention.Due in the first embodiment, light emitting module is equipped with six light sources, and therefore the complete hot spot shown in Fig. 5 is to be combined by six sub-hot spots.These six sub-hot spots were upwards uniformly distributed in week, and overlapped at neighboring region separately, can form thus the ring-shaped light spot of a sealing.This can be according to the brightness of light source or the first angle α 1(referring to Fig. 3) to be adjusted to circular hot spot brightness higher, and be evenly distributed, also avoid forming dark space between adjacent two sub-hot spots simultaneously.
In a unshowned embodiment, can be also light source and the corresponding lens that light emitting module is equipped with other quantity according to practical situations, for example three groups of light sources and lens, four groups of light sources and lens etc.
Also the hot spot that can realize is as required adjusted the plane of incidence of lens, is adjusted the profile of the first sub-plane of incidence and the second sub-plane of incidence, for example can in the direction of the 3rd axle of lens, change the height of the plane of incidence, also can be at the basal plane of lens, change the width of the plane of incidence in the plane at place, lens bottom surface.
In addition, although only with respect to a kind of special characteristic or the aspect that discloses embodiments of the invention in numerous embodiments, but as any given or application-specific is desired, combination can be carried out with one or more further features of other embodiment or aspect in these features or aspect.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in.
Reference number
1 circuit board
2 light sources
3 optics/lens
10 light emitting modules
The sub-plane of incidence of A1 first
The sub-plane of incidence of A2 second
A3 exit facet
α 1 first angle
The middle section of R1 annular array
The perimeter of R2 annular array
The first axle of X optics
The second axle of Y optics
The 3rd axle of Z optics
The basal plane of X-Y optics
The first vertical plane of X-Z optics
The second vertical plane of Y-Z optics
Claims (13)
1. a light emitting module (10), comprise circuit board (1), be arranged at least three light sources (2) of described circuit board (1) one side and attach troops to a unit respectively at least three optics (3) of each light source (2), it is characterized in that, described at least three optics (3) are designed for respectively and produce sub-hot spot, and described sub-hot spot is overlapping to form uniform hot spot at least partly.
2. light emitting module according to claim 1 (10), it is characterized in that, described light source is arranged as annular array, and described optics (3) is designed for and makes the light beam more than the middle section (R1) of annular array described in directive through the light beam of the perimeter (R2) of annular array described in each described optics (3) directive.
3. light emitting module according to claim 1 and 2 (10), it is characterized in that, described optics (3) is lens, described lens have the first axle (X), the second axle (Y) and the 3rd axle (Z) perpendicular to described the first axle (X), described the first and second axle (X, Y) limit the basal plane (X-Y) of described lens, and described the 3rd axle (Z) is perpendicular to described basal plane (X-Y).
4. light emitting module according to claim 3 (10), it is characterized in that, described lens comprise the plane of incidence, the described plane of incidence above forms the first curve at the first vertical planes (X-Z) described lens, that limited by described the first axle (X) and described the 3rd axle (Z), and described the first curve is asymmetric about described the 3rd axle (Z).
5. light emitting module according to claim 4 (10), it is characterized in that, described optics (3) comprises towards the first sub-plane of incidence (A1) of described middle section (R1) with towards the second sub-plane of incidence (A2) of described perimeter (R2), the described first sub-plane of incidence (A1) and the described second sub-plane of incidence (A2) are connected to form the arc plane of incidence smoothly, and the described plane of incidence is asymmetric about the second vertical plane (Y-Z) being limited by described the second axle (Y) and described the 3rd axle (Z).
6. light emitting module according to claim 5 (10), is characterized in that, the described first sub-plane of incidence (A1) and the described second sub-plane of incidence (A2) are respectively about described the first vertical plane (X-Z) symmetry.
7. light emitting module according to claim 6 (10), it is characterized in that, the described first sub-plane of incidence (A1) is at upper second curve that forms of described the first vertical plane (X-Z), the described second sub-plane of incidence (A2) is at upper the 3rd curve that forms of described the first vertical plane (X-Z), be connected to form described the first curve described the second curve and described the 3rd curve smoothing, between described the second curve and described the first axle (X), there is the first angle (α 1), between described the 3rd curve and described the first axle (X), there is the second angle (α 2), described the first angle (α 1) is greater than described the second angle (α 2).
8. light emitting module according to claim 7 (10), is characterized in that, described the second curve and described the 3rd curve are SPLs.
9. light emitting module according to claim 4 (10), is characterized in that, the described first sub-plane of incidence (A1), the described second sub-plane of incidence (A2) and described circuit board (1) limit the container cavity that holds described light source (2) jointly.
10. light emitting module according to claim 4 (10), it is characterized in that, described optics (3) also comprises exit facet (A3), and described exit facet (A3) is at upper the 4th curve that forms of described the first vertical plane (X-Z), and described the 4th curve is about described the 3rd axle (Z) symmetry.
11. light emitting modules according to claim 10 (10), is characterized in that, described exit facet (A3) is sphere.
12. light emitting modules according to claim 1 and 2 (10), is characterized in that, described at least three optics (3) are evenly arranged in circumferential direction.
13. 1 kinds of lighting devices, is characterized in that, comprise according to the light emitting module (10) described in any one in claim 1-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210454363.3A CN103807627B (en) | 2012-11-13 | 2012-11-13 | Light emitting module and illumination device with light emitting module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210454363.3A CN103807627B (en) | 2012-11-13 | 2012-11-13 | Light emitting module and illumination device with light emitting module |
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| Publication Number | Publication Date |
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| CN103807627A true CN103807627A (en) | 2014-05-21 |
| CN103807627B CN103807627B (en) | 2017-05-10 |
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| CN201210454363.3A Expired - Fee Related CN103807627B (en) | 2012-11-13 | 2012-11-13 | Light emitting module and illumination device with light emitting module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626698A (en) * | 2018-07-12 | 2018-10-09 | 厦门佰明光电股份有限公司 | Light extraction reflects cup structure and composite structure and its light |
| CN109541848A (en) * | 2019-01-04 | 2019-03-29 | 惠州市华星光电技术有限公司 | Lens for LED light source |
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| CN101625103A (en) * | 2009-06-01 | 2010-01-13 | 江西省晶和照明有限公司 | LED lens and array structure thereof |
| CN101749592A (en) * | 2008-12-22 | 2010-06-23 | 欧阳杰 | LED lamp lighting method with high effective exposure rate |
| WO2010133772A1 (en) * | 2009-05-22 | 2010-11-25 | Cjsc Optogan | A light source element and a method for manufacturing |
| CN102022690A (en) * | 2009-09-11 | 2011-04-20 | 玉晶光电股份有限公司 | Optical lens |
| CN202109279U (en) * | 2011-06-23 | 2012-01-11 | 南昌大学 | LED illuminating device capable of improving edge light leakage |
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2012
- 2012-11-13 CN CN201210454363.3A patent/CN103807627B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749592A (en) * | 2008-12-22 | 2010-06-23 | 欧阳杰 | LED lamp lighting method with high effective exposure rate |
| WO2010133772A1 (en) * | 2009-05-22 | 2010-11-25 | Cjsc Optogan | A light source element and a method for manufacturing |
| CN101625103A (en) * | 2009-06-01 | 2010-01-13 | 江西省晶和照明有限公司 | LED lens and array structure thereof |
| CN102022690A (en) * | 2009-09-11 | 2011-04-20 | 玉晶光电股份有限公司 | Optical lens |
| CN202109279U (en) * | 2011-06-23 | 2012-01-11 | 南昌大学 | LED illuminating device capable of improving edge light leakage |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626698A (en) * | 2018-07-12 | 2018-10-09 | 厦门佰明光电股份有限公司 | Light extraction reflects cup structure and composite structure and its light |
| CN109541848A (en) * | 2019-01-04 | 2019-03-29 | 惠州市华星光电技术有限公司 | Lens for LED light source |
| CN109541848B (en) * | 2019-01-04 | 2021-07-06 | 惠州市华星光电技术有限公司 | Lens for LED light source |
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| CN103807627B (en) | 2017-05-10 |
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Granted publication date: 20170510 Termination date: 20191113 |