Source: https://patents.google.com/patent/CN108054269A/en
Timestamp: 2020-01-26 23:48:32
Document Index: 369445062

Matched Legal Cases: ['art 3131', 'art 3132', 'art 3131', 'art 3131', 'art 3132', 'art 3131', 'art 3132', 'art 3131', 'art 3132', 'art 3131']

CN108054269A - A kind of light emitting diode - Google Patents
A kind of light emitting diode Download PDF
CN108054269A
CN108054269A CN201810008000.4A CN201810008000A CN108054269A CN 108054269 A CN108054269 A CN 108054269A CN 201810008000 A CN201810008000 A CN 201810008000A CN 108054269 A CN108054269 A CN 108054269A
CN201810008000.4A
2012-04-28 Application filed by 柳超 filed Critical 柳超
2012-04-28 Priority to CN201810008000.4A priority Critical patent/CN108054269A/en
2012-04-28 Priority to CN201210130418.5A priority patent/CN103378280B/en
2018-05-18 Publication of CN108054269A publication Critical patent/CN108054269A/en
A kind of lens, it is used to that the light that light-emitting diode chip for backlight unit is sent to be adjusted, the lens include incidence surface and light-emitting surface, the light-emitting surface is located at the lateral of the lens and around the incidence surface, the lens further include a reflecting surface, the middle part of the reflecting surface is recessed to the incidence surface, the edge of the reflecting surface is connected with the light-emitting surface, the reflecting surface is tilted simultaneously towards the incidence surface and light-emitting surface, a part of directive of light of lens reflecting surface is injected from the incidence surface, another part is directly projected by light-emitting surface, the reflectivity of the reflecting surface is more than refractive index, a part of light of the directive reflecting surface is reflected onto the light-emitting surface and projects lens, another part light of the directive reflecting surface directly projects its outer from reflecting surface, the transmissivity of the light-emitting surface is more than reflectivity.Present invention further teaches a kind of light emitting diodes using the lens.
A kind of light emitting diode
The application is Application No.：201210130418.5 the applying date：It is on 04 28th, 2012, entitled " to shine The divisional application of the patent of invention of the lens of diode ".
The present invention relates to a kind of light emitting diode, more particularly to a kind of lens of light emitting diode.
Light emitting diode is wide with various features such as environmental protection, power saving, long lifespans as a kind of efficient light source General applies to numerous areas, such as life lighting, back light.
The light-emitting angle of existing light emitting diode is generally 120 °, this smaller light-emitting angle causes light emitting diode light Source is equivalent to area source.With transmission light source wide-angle go out optical range compared with, LED source smaller light-emitting angle tool There are many missings.And the star of newest american energy requires the LED ball lamp of alternative conventional bulb to need angle big In 180 degree.Therefore the energy saving advantage of light emitting diode how is played, the distribution design of light shape is reached into even better than conventional light source Lamps and lanterns, it in the popularization of application field is also a urgent problem to be solved to accelerate it with the advantage for playing light emitting diode, for This is even more greatly challenge and a business opportunity for indoor lamp.As a result, in LED source design, secondary optical design It is increasingly prominent.
In view of this, it is necessary to which a kind of light emitting diode and its lens with larger beam angle are provided.
A kind of lens are used to that the light that light-emitting diode chip for backlight unit is sent to be adjusted, the lens include incidence surface and Light-emitting surface, the light-emitting surface are located at the lateral of the lens and around the incidence surfaces, which further includes a reflecting surface, the reflecting surface Middle part is recessed to the incidence surface, and the edge of the reflecting surface is connected with the light-emitting surface, which tilts simultaneously towards the incidence surface And light-emitting surface, a part of directive of light of lens reflecting surface is injected from the incidence surface, another part is directly penetrated by light-emitting surface Go out, the reflectivity of the reflecting surface is more than refractive index, and a part of light of the directive reflecting surface is reflected onto the light-emitting surface and projects thoroughly Mirror, another part light of the directive reflecting surface directly project its outer from reflecting surface, and the transmissivity of the light-emitting surface is more than instead Penetrate rate.
A kind of light emitting diode, including light-emitting diode chip for backlight unit and lens, the lens its be used for light-emitting diode chip for backlight unit The light sent is adjusted, which includes incidence surface and light-emitting surface, which, which is located at the lateral of the lens and surround, is somebody's turn to do Incidence surface, the lens further include a reflecting surface, and the middle part of the reflecting surface is recessed to the incidence surface, and the edge of the reflecting surface goes out with this Smooth surface is connected, which tilts simultaneously towards the incidence surface and light-emitting surface, and the light one of the lens is injected from the incidence surface Divide directive the reflecting surface, another part is directly projected by light-emitting surface, and the reflectivity of the reflecting surface is more than refractive index, the directive reflection A part of light in face is reflected onto the light-emitting surface and projects lens, and another part light of the directive reflecting surface is directly from reflecting surface Its outer is projected, the transmissivity of the light-emitting surface is more than reflectivity, the light-emitting diode chip for backlight unit face incidence surface.
Light emitting diode in the present invention, reflecting surface and the incidence surface and light-emitting surface of lens tilt relatively, and the reflection The reflectivity in face is more than transmissivity, so, it is ensured that by the reflective surface, to being located at, the lens are lateral to be gone out more light Smooth surface so that the light-emitting angle of the light emitting diode is more than 180 °, obtains the emergent ray of greater angle, close to traditional lighting The effect of the range of exposures of lamps and lanterns.
Fig. 1 is the sectional view of the light emitting diode in a preferred embodiment of the present invention.
Fig. 2 is the stereogram of the lens of light emitting diode shown in FIG. 1.
Fig. 3 is the lens in Fig. 2 in the stereogram of other direction.
Fig. 4 is the operation principle schematic diagram of light emitting diode shown in Fig. 1.
Fig. 5 is the light distribution curve of light emitting diode shown in Fig. 1.
Light emitting diode 100
Light-emitting diode chip for backlight unit 20
Dipped beam end 31
First light-emitting surface 311
Bottom wall 312
Groove 3120
First groove portion 3121
Second groove portion 3122
Lug boss 3123
Pillar 3124
Incidence surface 313
First light in part 3131
Second light in part 3132
Short slot 314
Distance light end 32
Second light-emitting surface 321
Reflecting surface 323
Minimum point 3230
Peak 3231
Horizontal ora terminalis 3232
Fillet surface 3233
Referring to Fig. 1, the light emitting diode 100 that embodiment of the present invention provides includes a pedestal 10, arranged on the pedestal 10 On light-emitting diode chip for backlight unit 20 and cover at lens 30 on the light-emitting diode chip for backlight unit.
Also referring to Fig. 2 to Fig. 3, the lens 30 include being connected with each other a dipped beam end 31 and a distance light end 32, wherein The dipped beam end 31 is close to the light-emitting diode chip for backlight unit 20, and the distance light end 32 is away from the light-emitting diode chip for backlight unit 20, and the dipped beam end 31 is coaxial with distance light end 32.
The bottom at the dipped beam end 31 is towards the light-emitting diode chip for backlight unit 20, the top at the dipped beam end 31 and the distance light end 32 1 Body connects.The dipped beam end 31 is substantially cylindrical, which includes one first light-emitting surface 311 and a bottom wall 312.This first Light-emitting surface 311 is the periphery at the dipped beam end 31.The bottom wall 312 is located at the bottom at the dipped beam end 31.The outer diameter at the dipped beam end 31 The gradually increase from the bottom wall 312 to the distance light end 32.
The bottom wall 312 is equipped with a groove 3120, the groove 3120 towards the light-emitting diode chip for backlight unit 20, the bottom wall 312 Include one first groove portion 3121 and one second groove portion 3122 from shallow to deep, wherein first groove portion 3121 is rectangular, second slot Portion 3122 is in round pie, and the inside of the inner wall of second groove portion 3122 and first groove portion 3121 is in tangent relation, first slot Portion 3121, the second groove portion 3122 are coaxial with the dipped beam end 31.The bottom of the groove 3120, the i.e. bottom of second groove portion 3122 are One incidence surface 313, the incidence surface 313 are included positioned at first light in part 3131 at middle part and around outside first light in part 3131 One second light in part 3132 enclosed.First light in part 3131 is a circular flat, which is an annular Inclined-plane.One side where second light in part 3132 from from the edge of first light in part 3131 to the distance light end 32 tilts extension, So that the depth of second groove portion 3122 gradually increases from middle part to edge.The inner wall of the incidence surface 313, the first groove portion 3121 And second the inner wall of groove portion 3122 be that transmissivity is more than reflectivity, the light generated in order to light-emitting diode chip for backlight unit 20 is from institute The inner wall for stating incidence surface 313, the inner wall of the first groove portion 3121 and the second groove portion 3122 enters in lens 30.
Opposite sides on the bottom wall 312 in the groove 3120 is respectively provided with a lug boss 3123, and each lug boss 3123 is in Arch, the arch face of each lug boss 3123 are smoothly connected with first light-emitting surface 311 at the dipped beam end 31.Two lug boss 3123 it Between form a short slot 314, for accommodating the pedestal 10.The middle part of each lug boss 3123 is equipped with along the axially extending of the lens 30 A pillar 3124.The pillar 3124 is cylindrical, as the location structure of the lens 30, for fixing the lens 30.
Greatly in truncated cone-shaped, the outer distance light end 32 without leave at the distance light end 32 is connected one with the dipped beam end 31 at the distance light end 32 It holds to the other end and gradually increases, the periphery at the distance light end 32 is the second light-emitting surface 321 of the lens 30.The distance light end 32 is most Small outer diameter is more than the maximum outside diameter at the dipped beam end 31, so as to form one between 311 and second light-emitting surface 321 of the first light-emitting surface Ring-shaped step 315.Second light-emitting surface 321 is adjacent with the first light-emitting surface 311.First light-emitting surface, 311 and second light-emitting surface 321 It is more than reflectivity for transmissivity, which is located at the lateral of the lens 30 with the second light-emitting surface 321 and enters around this Smooth surface 313, to collectively form the light-emitting surface of the lens 30.
The top at the distance light end 32 is recessed to the incidence surface 313, so as to form a funnel-form in the top at the distance light end 32 Reflecting surface 323.A minimum point 3230 is formed at the center of the reflecting surface 323,3230 face of the minimum point incidence surface 313 Center.The peak 3231 of the reflecting surface 323 forms an annulus.The reflecting surface 323 has the section of a V-arrangement, the V-arrangement section The camber line for converging at the minimum point 3230 including two, the minimum curvature of each camber line is 0.0642, maximum curvature 0.1920, Each camber line is tapered into compared with the slope at the center of incidence surface 313 from the minimum point 3230 to the peak 3231, and should The edge slope of reflecting surface is 0, so as to form the horizontal ora terminalis 3232 of an annular at the edge of the reflecting surface 323.The horizontal ends The fillet surface 3233 of an annular is formed between edge 3232 and second light-emitting surface 321, which second goes out with this Smooth surface 321 is smoothly connected by the fillet surface 3233.The reflectivity of the reflecting surface 323 and fillet surface 3233 is more than transmission Rate.
Referring to Fig. 4, when the light emitting diode 100 works, the light part which sends is straight Connected the lens 30 the first light-emitting surface 311 and the second light-emitting surface 321 from the laterally emitted of the lens 30, since this first goes out The transmissivity of 311 and second light-emitting surface 321 of smooth surface be more than reflectivity, so as to ensure the lens 30 laterally go out luminous intensity； Another part light is incident upon the fillet surface 3233 at the reflecting surface 323 and 323 edge of reflecting surface.Be incident upon the reflecting surface 323 and The light of fillet surface 3233, a part be reflected onto the one side opposite with 20 light direction of light-emitting diode chip for backlight unit and by this First light-emitting surface 311 and the second light-emitting surface 321 project, and so as to increase the angle of the 30 lateral emergent ray of lens, make beam angle Degree is more than 180 °；Another part is projected from the reflecting surface 323 and fillet surface 3233, due to the reflecting surface 323 and fillet surface 3233 reflectivity is more than transmissivity, therefore, by the light ratio that the reflecting surface 323 and fillet surface 3233 reflect from the reflecting surface 323 and the light that transmits of fillet surface 3233 it is more, so as to further increase the intensity of the 30 lateral emergent ray of lens.
Due to light from the lens 30 inject air in when, when the angle of incidence is larger than a critical angle, light i.e. lens 30 with The interface of air is totally reflected, therefore, have said structure lens, can by adjust reflecting surface 323 curvature and It reflexes to first, second light-emitting surface 311,321 compared with the slope of light-emitting diode chip for backlight unit 20 to adjust from reflecting surface 323 The number and angle of light, consequently facilitating designing the light emitting diode with larger light-emitting angle and uniform in light emission.It in addition, should Second light in part 3132 of the incidence surface 313 of lens 30 is from the edge of its first light in part 3131 into second groove portion 3122 Wall tilts extension, so as to which more light are refracted to the reflecting surface 323, to ensure the lateral light extraction of the lens 30.
Referring to Fig. 5, using the axial direction of the lens 30 as the 0 of light-emitting diode chip for backlight unit ° of light direction, the gained lens 30 Distribution curve flux as shown in figure 5, dotted line show above-mentioned light emitting diode 100 along perpendicular to 0 ° of light direction, i.e. 90 ° of directions On distribution curve flux, shown in solid is above-mentioned light emitting diode 100 along parallel to 0 ° of light direction, i.e. light distribution on 0 ° of direction Curve.The light emitting diode 100 can project uniformly in the plane perpendicular to 0 ° of light direction it can be seen from solid line Approximate circle hot spot (wherein contain due to error caused by the position of light-emitting diode chip for backlight unit 20 and the influence of shape).By reality Line can be seen that 100 shooting angle of light emitting diode and be more than 180 °, wherein more than 90% light be distributed in about 170 °~ In 190 ° and 350 °~10 ° of section, the light in the range of 10 °~160 ° is relatively fewer, and light emitting diode 100 is ensure that from face Lateral light-emitting angle and go out luminous intensity.
The light emitting diode 100 of embodiment of the present invention, the reflecting surface 323 of lens is in the slope and incidence surface changed 313 and first light-emitting surface 311, the second light-emitting surface 321 tilt relatively, and the reflectivity of the reflecting surface 323 is more than transmissivity, such as This, it is ensured that most light that light-emitting diode chip for backlight unit 20 is sent by the reflecting surface 323 reflex to positioned at the lens it is lateral the First, the second light-emitting surface 311,321 so that the light-emitting angle of the light emitting diode is more than 180 °, obtains the outgoing of greater angle Light, close to the effect of the range of exposures of traditional lighting lamps and lanterns.In a particular application, above-mentioned light emitting diode 100, can arrange It circularizes, the circular or patterns such as square, to obtain the illumination being more uniformly distributed.
It is understood that for those of ordinary skill in the art, it can be conceived with the technique according to the invention and done Go out its point of various corresponding changes and deformation, and all these changes and deformation should all belong to the protection model of the claims in the present invention It encloses.
1. a kind of light emitting diode, the light emitting diode include a pedestal, the light-emitting diode chip for backlight unit on the pedestal and Cover at the lens on the light-emitting diode chip for backlight unit, which is characterized in that the lens its be used to send light-emitting diode chip for backlight unit Light be adjusted, which includes incidence surface and light-emitting surface, which is located at the lateral of the lens and circular this enters light Face, the lens further include a reflecting surface, and the middle part of the reflecting surface is recessed to the incidence surface, the edge of the reflecting surface and the light-emitting surface It is connected, which tilts simultaneously towards the incidence surface and light-emitting surface, and the light part that the lens are injected from the incidence surface is penetrated To the reflecting surface, another part is directly projected by light-emitting surface, and the reflectivity of the reflecting surface is more than refractive index, the directive reflecting surface A part of light is reflected onto the light-emitting surface and projects lens, and another part light of the directive reflecting surface is directly projected from reflecting surface Its outer, the transmissivity of the light-emitting surface are more than reflectivity；The reflecting surface is in funnel-form, and a ring is formed at the edge of the reflecting surface The horizontal ora terminalis of shape forms the fillet surface of an annular, the horizontal ora terminalis and the light extraction between the horizontal ora terminalis and the light-emitting surface Face is smoothly connected by the fillet surface, and the reflectivity of fillet surface is more than transmissivity.
2. light emitting diode according to claim 1, which is characterized in that a minimum point is formed at the center of the reflecting surface, The center of the minimum point face incidence surface.
3. light emitting diode according to claim 1, which is characterized in that the reflecting surface has the section of a V-arrangement, the V-arrangement Section includes two camber lines for converging at the minimum point, and the minimum curvature of each camber line is 0.0642, maximum curvature 0.1920, Each camber line is outwards tapered into compared with the slope at the center of incidence surface from the minimum point.
4. light emitting diode according to claim 1, which is characterized in that the edge slope of the reflecting surface is 0.
5. light emitting diode according to claim 1, which is characterized in that the lens include dipped beam end and distance light end, this is near Light end is cylindrical, which is in round table-like, and the dipped beam end is coaxial with distance light end, which is formed at the bottom at the dipped beam end Portion, the top at the dipped beam end are connected with the bottom at the distance light end, which is formed at the top at the distance light end, the dipped beam end Periphery forms one first light-emitting surface, one second light-emitting surface, the first light-emitting surface and the first light-emitting surface on the periphery at the distance light end It is adjacent and collectively constitute the light-emitting surface.
6. light emitting diode according to claim 1, which is characterized in where the outer incidence surface without leave at the dipped beam end One lateral distance light end side gradually increases, and the outer distance light end without leave at the distance light end is connected one end with the dipped beam end to another One end gradually increases, and the minimum outer diameter at the distance light end is more than the maximum outside diameter at the dipped beam end, so as in first light-emitting surface and the A ring-shaped step is formed between two light-emitting surfaces.
7. light emitting diode according to claim 1 a, which is characterized in that bottom wall, the bottom are formed on the bottom at the dipped beam end A groove is formed on wall, which includes one first groove portion and one second groove portion from shallow to deep, and wherein first groove portion is rectangular, Second groove portion is in round pie, the inside of the inner wall of second groove portion and first groove portion in tangent relation, second groove portion The incidence surface is formed on bottom.
8. light emitting diode according to claim 1, which is characterized in that the opposite sides on the bottom wall in the groove is respectively set There is a lug boss, each lug boss is domed, and the arch face of each lug boss and first light-emitting surface at the dipped beam end are smoothly connected, should A short slot is formed between two lug bosses, the middle part of each lug boss is equipped with the axially extending pillar along the lens.
9. light emitting diode according to claim 1, which is characterized in that the incidence surface includes entering light positioned at the first of middle part Portion and the second light in part around first light in part periphery, second light in part are remote from the edge of first light in part to this One side where light end tilts extension.
10. light emitting diode according to claim 1, which is characterized in that the light-emitting diode chip for backlight unit face incidence surface.
CN201810008000.4A 2012-04-28 2012-04-28 A kind of light emitting diode CN108054269A (en)
CN201810008000.4A CN108054269A (en) 2012-04-28 2012-04-28 A kind of light emitting diode
CN201210130418.5A CN103378280B (en) 2012-04-28 2012-04-28 The lens of light emitting diode
CN201210130418.5A Division CN103378280B (en) 2012-04-28 2012-04-28 The lens of light emitting diode
CN108054269A true CN108054269A (en) 2018-05-18
ID=49463108
CN201710592004.7A CN107293631B (en) 2012-04-28 2012-04-28 Light emitting diode
US (1) US20130286658A1 (en)
CN (3) CN108054269A (en)
CN1760700A (en) * 2004-10-15 2006-04-19 三星电机株式会社 Lens for LED light sources
US20120014112A1 (en) * 2010-07-16 2012-01-19 Chia-Mao Li High efficiency refraction body
CN2746537Y (en) * 2004-11-23 2005-12-14 中国电子科技集团公司第十三研究所 Luminous of reflection lens
JP2011034770A (en) * 2009-07-31 2011-02-17 Sony Corp Light emitting device and display device
CN201661986U (en) * 2010-02-20 2010-12-01 李家茂 High-efficient side-emitting refractive body
2012-04-28 CN CN201810008000.4A patent/CN108054269A/en active Search and Examination
2012-04-28 CN CN201710592004.7A patent/CN107293631B/en active IP Right Grant
2012-04-28 CN CN201210130418.5A patent/CN103378280B/en active IP Right Grant
2012-10-17 US US13/653,635 patent/US20130286658A1/en not_active Abandoned
US20130286658A1 (en) 2013-10-31
CN107293631B (en) 2019-02-01
CN103378280A (en) 2013-10-30
CN103378280B (en) 2017-12-15
CN107293631A (en) 2017-10-24
JP2007165899A (en) 2007-06-28 Deflection lens for light-emitting diodes