CN202972932U

CN202972932U - Optical lens of light-emitting diode (LED)

Info

Publication number: CN202972932U
Application number: CN2012206920329U
Authority: CN
Inventors: 唐德龙; 吴民翊
Original assignee: Dongguan Ledlink Optics Inc
Current assignee: Dongguan Ledlink Optics Inc
Priority date: 2012-12-14
Filing date: 2012-12-14
Publication date: 2013-06-05
Anticipated expiration: 2022-12-14

Abstract

The utility model discloses an optical lens of a light-emitting diode (LED). The optical lens of the LED is provided with a lens body and comprises a light emitting face, a side curved face and a light entering face. The light emitting face is a round surface with the diameter ranging from 13.6mm to 17.58mm. The side curved face is composed of multiple curved face points and one side rim of the side curved face is connected with the light emitting face and the other side rim frame forms one of reference surfaces of the round. The other side rim frame is connected with the rim of the light entering face. The distance between the reference surface and the light emitting face is 7.4mm. Thus, the light emitting face, the side curved face and the light entering face are sealed to form an outer surface of the lens body. The LED covers the optical lens of the LED so as to adjust an original light emitting angle, luminosity distribution and illuminance distribution of the LED. Thus, a predicted lighting range and lighting strength can be reached and the optical lens of the LED can be diversely applied to all sorts of lighting.

Description

LED optical lens

Technical field

[0001]The technical field that the utility model relates to optical lens is relevant, particularly about a kind of LED optical lens that utilizes the secondary optics refraction principle to change lighting angle, photometric distribution and the Illumination Distribution of former light emitting diode, meet the different demands of various light fixture to adjust lighting area.

Background technology

In recent years, due to light emitting diode (Light Emitting Diode, LED) have the advantages such as low power consumption, high-effect and life-span be long, make light emitting diode extensively replace conventional light source and be applied on display, advertising billboard and various light fixture, for example in street lamp, courtyard lamp or desk lamp.Yet compared to conventional light source, the divergence of beam angle of light emitting diode is less, so that illumination zone is restricted when applying to light fixture, perhaps, because of central ray too concentrated, and make the brightness difference in size of the center of illumination zone and edge very huge, uniform illuminating effect can't be provided.To this, how to utilize the secondary optics principle, the uniformity for the projection illumination of LED source, lighting angle and irradiation light is improved, and is the be correlated with problem of practitioner's utmost point wish improvement of this area with the illumination condition that the best all can be provided under the service condition of various differences.

Therefore, with demand, design a LED optical lens, utilize the lens arrangement characteristic of symmetrical expression, make LED source be produced all bright illuminating effects of symmetrical, wide area and irradiation area after the lens birefringence.

The utility model content

The purpose of the utility model is to provide a kind of LED optical lens, adjusts illumination zone and equal light effect to utilize the secondary optics principle to change and to adjust lighting angle and the illumination of LED source, to make.

For reaching above-mentioned purpose, this LED optical lens of the utility model is combined with a light emitting diode, be provided with guiding the light of this light emitting diode and produce better light shape layout, and this LED optical lens has a lens body, and it comprises an exiting surface, a N-Side surf and an incidence surface.This exiting surface is circular surface, and the long 13.6～17.58mm of its diameter.This N-Side surf is comprised of a plurality of surface points, and one of this N-Side surf lateral margin and this exiting surface interconnect, and another lateral margin frame of this N-Side surf encloses and forms one of circular datum level, and wherein this datum level to the distance of this exiting surface is 7.4mm.And, this datum level edge of the edge of this incidence surface and this N-Side surf interconnects, and form surface outside this lens body by this exiting surface, this N-Side surf and the sealing of this incidence surface, and in this incidence surface place's indent formation one accommodation chamber of this lens body, in order to accommodating this light emitting diode.

Wherein, with on this datum level any two be defined as respectively X-direction and Y direction by one of this datum level center of circle and mutually orthogonal straight line, and this center of circle is the initial point of three dimensional space coordinate, and this lens body presents mirror symmetry take the Y-Z face as base surface on X-axis; This lens body presents mirror symmetry take the X-Z face as base surface on Y-axis, these surface points to X, Y, Z axis distance also has respectively a relative error p more than or equal to zero again, when a unit coordinate length is 1mm, and-0.05mm＜=p＜=0.05mm.

So, in an embodiment, these surface points have each point (x, z) and are (4,0), (6.09,2.47), (7.77,4.93), (8.79,7.40) on the X-Z coordinate plane; On the Y-Z coordinate plane, have each point (y, z) and be (4,0), (6.09,2.47), (7.77,4.93), (8.79,7.40).And this lens body is this accommodation chamber of 5.5mm in this incidence surface place's indent formation degree of depth.

In an inferior embodiment, these surface points have each point (x, z) and are (3.10,0), (5.19,2.47), (6.96,4.93), (8.60,7.40) on the X-Z coordinate plane; On the Y-Z coordinate plane, have each point (y, z) and be (3.10,0), (5.19,2.47), (6.96,4.93), (8.60,7.40).And this lens body is this accommodation chamber of 3.5mm in this incidence surface place's indent formation degree of depth.

In another embodiment, these surface points have each point (x, z) and are (2.30,0), (4.49,2.47), (5.84,4.93), (6.80,7.40) on the X-Z coordinate plane; On the Y-Z coordinate plane, have each point (y, z) and be (2.30,0), (4.49,2.47), (5.84,4.93), (6.80,7.40).And this lens body is this accommodation chamber of 2.8mm in this incidence surface place's indent formation degree of depth.

In addition, for assembling this LED optical lens and this light emitting diode, the utility model more comprises an engaging body, and this engaging body is located at this exiting surface one side, is provided with mutually being fixed with respect to a light emitting diode base plate.

Description of drawings

Fig. 1 is the outside drawing of the utility model the first preferred embodiment.

Fig. 2 is that the utility model the first preferred embodiment is in the cutaway view on X-Z plane.

Fig. 3 is that the utility model the first preferred embodiment is in the optical track figure on X-Z plane.

Fig. 4 is the distribution curve flux figure of the utility model the first preferred embodiment.

Fig. 5 is that the utility model the second preferred embodiment is in the cutaway view on X-Z plane.

Fig. 6 is that the utility model the second preferred embodiment is in the optical track figure on X-Z plane.

Fig. 7 is the distribution curve flux figure of the utility model the second preferred embodiment.

Fig. 8 is that the utility model the 3rd preferred embodiment is in the cutaway view on X-Z plane.

Fig. 9 is that the utility model the 3rd preferred embodiment is in the optical track figure on X-Z plane.

Figure 10 is the distribution curve flux figure of the utility model the 3rd preferred embodiment.

The specific embodiment

See also Fig. 1 and Fig. 2, its outside drawing that is respectively the utility model the first preferred embodiment reaches in the cutaway view on X-Z plane.As shown in the figure, this LED optical lens 1 is combined with a light emitting diode (not shown), is provided with guiding the light of this light emitting diode and produces better light shape layout.This LED optical lens 1 has a lens body 10 and an engaging body 11, and the surface of this engaging body 11 is latticed or the honeycomb type structure design, promotes the light uniformity with the optical path of dispersing this light emitting diode.This lens body 10 comprises an exiting surface 100, a N-Side surf 101 and an incidence surface 102, and this exiting surface 100 is the circular surface of diameter 17.58mm.According to geometry principle: point consists of line, the basic concept of line formation face as can be known, this N-Side surf 101 is comprised of a plurality of surface points 1010, and one of this N-Side surf 101 lateral margin and this exiting surface 100 interconnect, and its another lateral margin frame encloses one of formation circle datum level, and this datum level to the distance of this exiting surface 100 is 7.4mm again.The edge of this incidence surface 102 and this datum level edge interconnect, make this exiting surface 100, this N-Side surf 101 form surface outside this lens body 10 with these incidence surface 102 sealings, and this lens body 10 forms one of dark 5.5mm accommodation chamber in these incidence surface 102 place's indents, in order to accommodating this light emitting diode, this incidence surface 102 of this accommodation chamber top is outer convex surface shape again.And this engaging body 11 is located at these lens body 10 1 sides and is connected this exiting surface 100, is provided with mutually being fixed corresponding to a light emitting diode base plate (not shown).

Define the curve and surface of this N-Side surf 101 for these surface points 1010 of mat, at first on can this datum level, any two be defined as respectively X-direction and Y direction by one of this datum level center of circle and mutually orthogonal straight line, and to make this center of circle be the initial point of three dimensional space coordinate.Be the lens arrangement of symmetrical expression due to the utility model, therefore take the Y-Z face as base surface, this lens body 10 presents mirror symmetry on X-axis, similarly, take the X-Z face as base surface, 10 of this lens body present mirror symmetry on Y-axis.

Then, the mode of utilizing these surface points 1010 to set up curve and curved surface on engineering has the multiple practice, do not described in detail in this, main system utilizes the concept that is smoothly connected, and makes it to be guaranteed that curve connects at given surface points 1010 Chu Even but haply,, and also De Yi Even is continuous joins for the tangent slope of curve and curvature, go out the curved surface of this N-Side surf 101 with framework, hence one can see that, and the level and smooth degree of this N-Side surf 101 depends on these given surface points 1010 numbers.In the present embodiment, these surface points 1010 have each point (x, z) and are (4,0), (6.09,2.47), (7.77,4.93), (8.79,7.40) on the X-Z coordinate plane; On the Y-Z coordinate plane, has each point (y, z) be (4,0), (6.09,2.47), (7.77,4.93), (8.79,7.40), and these surface points 1010 to X, Y, Z axis distance also has respectively a relative error p more than or equal to zero, and is wherein long take 1mm as a unit coordinate ,-0.05mm＜=p＜=0.05mm.

When this light-emitting diode assembly is in this accommodation chamber, please in the lump with reference to Fig. 3 and Fig. 4, it is respectively the utility model the first preferred embodiment in optical track figure and the distribution curve flux figure on X-Z plane, the light that this light emitting diode is launched will penetrate this lens body 10 and produce the phenomenons such as refraction or reflection, and making the optical path skew and forming the highest normalization luminous intensity is 1 lighting effect.So, can utilize this LED optical lens 1 to adjust scope and the average luminous intensity of wanting irradiation area.

Hold, for realistic lighting demand is adjusted range of exposures and average normalization luminous intensity, this LED optical lens 1 is under this datum level condition constant to the distance of this exiting surface 100, the footpath of this exiting surface 100 of capable of regulating is wide, this accommodation chamber degree of depth, and these surface points 1010 of capable of regulating and change curve and the curved surface smoothness of this N-Side surf 101 distribute with the optical path that changes this light emitting diode.

As Fig. 5, Figure 6 and Figure 7, it is respectively the utility model the second preferred embodiment in the cutaway view on X-Z plane, in optical track figure and the distribution curve flux figure on X-Z plane, in this exiting surface 200 diameter 17.20mm, the dark approximately 3.5mm of this accommodation chamber, and the each point (x of these surface points 2010 on the X-Z coordinate plane, z) be (3.10,0), (5.19,2.47), (6.96,4.93), (8.60,7.40); On the Y-Z coordinate plane, when having each point (y, z) for (3.10,0), (5.19,2.47), (6.96,4.93), (8.60,7.40), can get the normalization luminous intensity and be up to 1 lighting effect.Therefore, can utilize this LED optical lens 2 to adjust scope and the average luminous intensity of wanting irradiation area.

Perhaps, as Fig. 8, Fig. 9 and shown in Figure 10, it is respectively the utility model the 3rd preferred embodiment in the cutaway view on X-Z plane, in optical track figure and the distribution curve flux figure on X-Z plane, when this exiting surface 300 diameter 13.6mm, the dark approximately 2.80mm of this accommodation chamber, making the each point (x, z) of these surface points 3010 on the X-Z coordinate plane is (2.30,0), (4.49,2.47), (5.84,4.93), (6.80,7.40); On the Y-Z coordinate plane, have each point (y, z) and be (2.30,0), (4.49,2.47), (5.84,4.93), (6.80,7.40), namely getting the highest normalization luminous intensity is 1.

Wherein, in the range of exposures of above-described embodiment, the range of exposures of the LED optical lens 3 that the 3rd embodiment is described can be greater than the range of exposures of the described LED optical lens 2 of the second embodiment, and the range of exposures of the described LED optical lens 2 of the second embodiment can be greater than the range of exposures of the described LED optical lens 1 of the first embodiment again.

The above is only the preferred embodiment of illustrative, but not is restricted person.Any spirit and category that does not break away from the utility model, and to its equivalent modifications of carrying out or change, all should be contained in rear attached claim.

Claims

1. a LED optical lens, be to produce a smooth shape for the light of guiding one light emitting diode, and this LED optical lens has a lens body, and it comprises:

One exiting surface is circular surface, the long 13.6～17.58mm of its diameter;

One N-Side surf is comprised of a plurality of surface points, and one of this N-Side surf lateral margin is connected with this exiting surface, and another lateral margin frame of this N-Side surf encloses and forms one of circular datum level, and this datum level to the distance of this exiting surface is 7.4mm; An and incidence surface, this datum level edge of its edge and this N-Side surf interconnects, and form surface outside this lens body by this exiting surface, this N-Side surf and the sealing of this incidence surface, and in this incidence surface place's indent formation one accommodation chamber of this lens body, in order to accommodating this light emitting diode.

2. LED optical lens according to claim 1, it is characterized in that: with on this datum level any two be defined as respectively X-direction and Y direction by one of this datum level center of circle and mutually orthogonal straight line, and this center of circle is the initial point of three dimensional space coordinate, this lens body presents mirror symmetry take the Y-Z face as base surface on X-axis; This lens body presents mirror symmetry take the X-Z face as base surface on Y-axis, these surface points to X, Y, Z axis distance also has respectively a relative error p more than or equal to zero again, when a unit coordinate length is 1mm, and-0.05mm＜=p＜=0.05mm.

3. LED optical lens according to claim 2 is characterized in that: these surface points have each point (x, z) and are (4,0), (6.09,2.47), (7.77,4.93), (8.79,7.40) on the X-Z coordinate plane; On the Y-Z coordinate plane, have each point (y, z) and be (4,0), (6.09,2.47), (7.77,4.93), (8.79,7.40).

4. LED optical lens according to claim 3 is characterized in that: it is this accommodation chamber of 5.5mm that this lens body forms degree of depth in this incidence surface place indent.

5. LED optical lens according to claim 2 is characterized in that: these surface points have each point (x, z) and are (3.10,0), (5.19,2.47), (6.96,4.93), (8.60,7.40) on the X-Z coordinate plane; On the Y-Z coordinate plane, have each point (y, z) and be (3.10,0), (5.19,2.47), (6.96,4.93), (8.60,7.40).

6. LED optical lens according to claim 5 is characterized in that: it is this accommodation chamber of 3.5mm that this lens body forms degree of depth in this incidence surface place indent.

7. LED optical lens according to claim 2 is characterized in that: these surface points have each point (x, z) and are (2.30,0), (4.49,2.47), (5.84,4.93), (6.80,7.40) on the X-Z coordinate plane; On the Y-Z coordinate plane, have each point (y, z) and be (2.30,0), (4.49,2.47), (5.84,4.93), (6.80,7.40).

8. LED optical lens according to claim 7 is characterized in that: it is this accommodation chamber of 2.8mm that this lens body forms degree of depth in this incidence surface place indent.

9. LED optical lens according to claim 1 is characterized in that: more comprise an engaging body, this engaging body is located at this exiting surface one side, is provided with mutually being fixed with respect to a light emitting diode base plate.