CN203363991U - LED (light-emitting diode) secondary optical lens - Google Patents
LED (light-emitting diode) secondary optical lens Download PDFInfo
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- CN203363991U CN203363991U CN2013204923115U CN201320492311U CN203363991U CN 203363991 U CN203363991 U CN 203363991U CN 2013204923115 U CN2013204923115 U CN 2013204923115U CN 201320492311 U CN201320492311 U CN 201320492311U CN 203363991 U CN203363991 U CN 203363991U
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Abstract
The utility model provides an LED (light-emitting diode) secondary optical lens which comprises a lens body and an annular flange, wherein the lens body comprises an upper surface, a lower surface and a lateral curved surface; the upper and lower surfaces are parallel to each other and both are circular; the center of circle of the lower surface is on a straight line perpendicular to the center of circle of the upper surface; the lateral curved surface is formed by rotating an arc which is connected with the edges of the upper and lower surfaces respectively by one circle around the straight line perpendicular to the center of circle of the upper surface; the diameter of the upper surface of the lens body is greater than that of the lower surface; the lower surface is inwards sunken to form a columnar accommodation space of which the bottom surface is shaped into an outwards-raised curved surface; the upper surfaces of the flange and the lens body are positioned on the same plane and both are emergent surfaces which are free scattering curved surfaces; the bottom surface of the columnar accommodation space is an incident surface. The LED secondary optical lens can be combined with LEDs and reasonably guide the light of the LEDs to form a better light shape layout.
Description
Technical field
The utility model relates to optical field, relates in particular to a kind of LED secondary optical lens.
Background technology
In recent years, illumination market blows afloat a burst of energy-saving illumination and changes agitation because light emitting diode (LED) has the characteristics such as low power consumption, high-effect and life-span be long, make LED carry out on a large scale replacing conventional light source and be widely used in display (television set), the furniture illumination, commercial lighting, outdoor lighting, billboard and various light fixture.Compared to conventional light source, the divergence of beam angle of LED is less, and while consequently applying to light fixture, illumination zone is restricted, or, because of central ray, too concentrate the center that makes illumination zone very huge with the brightness difference in size at periphery place, uniform illuminating effect can't be provided.To this, how to utilize the secondary optics principle, improved for the projection illumination of LED light source, lighting angle and the uniformity of irradiating light, with the illumination condition that the best all can be provided under the service condition in various differences, be the be correlated with problem of practitioner's utmost point wish improvement of this area.
The utility model content
For above-mentioned defect, the purpose of this utility model is to provide a kind of miniaturization ceramic LED lamp, and it can be combined with LED and the light of correct guidance LED and produce better smooth shape layout.
To achieve these goals, the utility model provides a kind of LED secondary optical lens, comprise lens body and with the integrated annular flange flange of lens body, this lens body comprises upper surface, lower surface and N-Side surf, described upper surface and described lower surface are parallel to each other, and described upper surface and described lower surface are all rounded, and the center of circle of described lower surface is positioned on the straight line perpendicular to the upper surface center of circle, described N-Side surf is rotated a circle and forms around the described straight line perpendicular to the upper surface center of circle by a camber line be connected with upper surface and lower surface edge respectively; The upper surface diameter of this lens body is greater than the diameter of described lower surface, and this lower surface indent forms a cylindricality accommodation space, and the bottom surface of this cylindricality accommodation space is outer convex surface shape; At grade, and the upper surface of the upper surface of described flange and described lens body is exiting surface for the upper surface of described flange and the upper surface of described lens body, and the bottom surface of described cylindricality accommodation space is incidence surface, and described exiting surface is free scattering curved surface.
According to LED secondary optical lens of the present utility model, the upper surface indent of described lens body forms the cylinder shape groove along this lens body Axis Extension.
According to LED secondary optical lens of the present utility model, described exiting surface is latticed or honeycomb type structure.
According to LED secondary optical lens of the present utility model, the diameter of described exiting surface is 66～81mm.
According to LED secondary optical lens of the present utility model, the distance between the lower surface of described lens body and the upper surface of described lens body is 35mm.
According to LED secondary optical lens of the present utility model, the degree of depth of described cylindricality accommodation space is 15mm.
According to LED secondary optical lens of the present utility model, the LED secondary optical lens also comprises the exiting surface Connection Card zoarium with described lens body, and this engaging body is connected with the LED aluminium base.
Lens body of the present utility model comprises upper surface, lower surface and N-Side surf, the lower surface indent of lens body forms a cylindricality accommodation space, the bottom surface of this cylindricality accommodation space is outer convex surface shape, the upper surface of lens body is exiting surface, the bottom surface of cylindricality accommodation space is incidence surface, and this N-Side surf is reflecting surface.LED can be arranged on to lens body lower surface center, the light part that LED distributes enters the upper surface of lens body via the rear collimation of incidence surface refraction; Another part enters the N-Side surf of lens body by the side refraction of cylindricality accommodation space, N-Side surf reflection collimation through lens body enters the upper surface of lens body again, freely scattering to target face through this upper surface, obtain uniform illuminating effect, the integral body of optical lens is rotational symmetry structure, and making the illumination hot spot obtained is also uniform disc.Whereby, the utility model can be combined with LED and the light of correct guidance LED and produce better smooth shape layout.
The accompanying drawing explanation
Fig. 1 is the three-dimensional view of a kind of LED secondary optical lens of the utility model;
Fig. 2 is the cross sectional view of a kind of LED secondary optical lens of the utility model.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Fig. 1 ~ Fig. 2, a kind of LED secondary optical lens 100 of the utility model, comprise lens body 10 and with the integrated annular flange flange 20 of lens body 10, this lens body 10 comprises upper surface 11, lower surface 12 and N-Side surf 13, upper surface 11 is parallel to each other with lower surface 12, and upper surface 11 and lower surface 12 are all rounded, and the center of circle of lower surface 12 is positioned on the straight line perpendicular to upper surface 11 centers of circle, N-Side surf 13 is rotated a circle and forms around the straight line perpendicular to upper surface 11 centers of circle by a camber line be connected with upper surface 11 and lower surface 12 edges respectively.
At grade, and the upper surface of the upper surface of flange 20 and lens body 10 is exiting surface to the upper surface of the upper surface of flange 20 and lens body 10, and the bottom surface 141 of cylindricality accommodation space 14 is incidence surface, and exiting surface is free scattering curved surface.Preferably, this exiting surface is latticed or honeycomb type structure.The diameter D1 of exiting surface is 66～81mm, and the distance B 2 between the lower surface 12 of lens body 10 and the upper surface 11 of lens body 10 is 35mm, and the depth D 3 of cylindricality accommodation space is 15mm.
The upper surface indent of lens body 10 forms the cylinder shape groove 15 along these lens body 10 Axis Extensions.The bottom surface of this cylinder shape groove 15 is free scattering curved surface.
Preferably, LED secondary optical lens 100 also comprises the exiting surface Connection Card zoarium with lens body 10, and this engaging body is connected with the LED aluminium base.
In the utility model, according to geometry principle: point forms line, and it is known that line forms the basic concept of face, and this N-Side surf 13 is comprised of the surface points such as a plurality of.These surface points define the curve and surface of this N-Side surf, at first on can this datum level, any two be defined as respectively X direction of principal axis and Y direction of principal axis by one of this datum level center of circle and mutually orthogonal straight line, and make the initial point that this center of circle is three dimensional space coordinate.Due to the lens arrangement that the utility model is symmetrical expression, therefore take the Y-Z face as base surface, this lens body 10 presents mirror symmetry on the X axle, similarly, take the X-Z face as base surface, and 10 of this lens body present mirror symmetry on the Y axle.
In this use is novel, the bottom of lens body 10 is provided with cylindrical accommodation space 14, the lower surface center of this lens body 10 is equipped with LED, the bottom surface 141 of cylindrical accommodation space 14 is for take the refraction sphere that the LED loca is focus, and the curvature of the bottom surface 141 of cylindrical accommodation space 14 meets the light that makes LED shine this face and collimates and enter in lens body 10 bodies after refraction; The N-Side surf 13 of lens body 10 is for take the parabola that LED is focus through the virtual image point of cylindrical accommodation space 14 sides refractions, and the N-Side surf 13 of lens body 10 meets the light that makes LED shine cylindrical accommodation space 14 sides and becomes after the reflection of this face on the upper surface 11 that collimated ray projects lens body 10; The free form surface that the curvature that the upper surface 11 of lens body 10 is tried to achieve for distributing according to the collimation incident intensity constantly changes, the upper surface 11 of lens body 10 is satisfied makes the light scattering of all collimations on target face, the upper surface 11 of lens body 10 is according to the lambertian distribution characteristic of LED light source luminous energy, luminous energy is modulated again, make module LED obtain uniform illuminating effect on target face, the integral body of lens body 10 is rotational symmetry structure, and making the illumination hot spot obtained is also uniform disc.In the present embodiment, the making material of lens body 10 is glass, optical glass or plastics, selecting of different materials, determined the face type of upper surface 11 free form surfaces of lens body 10, and concrete face type only need will can be determined in Refractive Index of Material substitution free form surface algorithm.
The resolution principle of upper surface 11 free form surfaces of lens body 10 of the present invention is: in the approximate lower situation of considering refraction of spot light, if free form surface is carried out to latticed division, each grid node place only has an incident ray so.Again according to nonimaging optics rim ray principle, by the part light at each grid edge on free form surface, after system, will be corresponding to the edge of an infinitesimal face on target, by the light of continuous part in the middle of grid, after system, also in the middle continuous distributed of target infinitesimal.By divergence conservation (Conservation) volume of light source, if optical system does not have loss, the divergence of the light source of optical system and target is conservation so.From energy point of view, consider, on free form surface, each grid can project fully on infinitesimal face corresponding to target face with the energy in solid angle that light source becomes after system.According to above-mentioned principle, illuminator for given illumination requirement, target face and free form surface can be divided into to the grid that number is equal, make micro-node on target face form corresponding one by one with the grid node of free form surface, so according to the Snell law, by controlling the method vector of free form surface grid node, control the exit direction of each grid node place incident ray, just can accurately realize that the energy in each grid projects on corresponding micro-.When micro-self-energy of each target equates, realized Uniform Illumination.Be rotational symmetric Uniform Illumination problem for the illumination target face, during design, only need under two-dimensional coordinate, solve bus of free form surface, it,, along 360 ° of Rotational Symmetries of optical axis direction, can be obtained to corresponding free-form surface lens.
In sum, lens body of the present utility model comprises upper surface, lower surface and N-Side surf, the lower surface indent of lens body forms a cylindricality accommodation space, the bottom surface of this cylindricality accommodation space is outer convex surface shape, the upper surface of lens body is exiting surface, the bottom surface of cylindricality accommodation space is incidence surface, and this N-Side surf is reflecting surface.LED can be arranged on to lens body lower surface center, the light part that LED distributes enters the upper surface of lens body via the rear collimation of incidence surface refraction; Another part enters the N-Side surf of lens body by the side refraction of cylindricality accommodation space, N-Side surf reflection collimation through lens body enters the upper surface of lens body again, freely scattering to target face through this upper surface, obtain uniform illuminating effect, the integral body of optical lens is rotational symmetry structure, and making the illumination hot spot obtained is also uniform disc.Whereby, the utility model can be combined with LED and the light of correct guidance LED and produce better smooth shape layout.
Certainly; the utility model also can have other various embodiments; in the situation that do not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (7)
1. a LED secondary optical lens, it is characterized in that, comprise lens body and with the integrated annular flange flange of lens body, this lens body comprises upper surface, lower surface and N-Side surf, upper surface and lower surface are parallel to each other, and upper surface and lower surface are all rounded, and the center of circle of lower surface is positioned on the straight line perpendicular to the upper surface center of circle, and N-Side surf is rotated a circle and forms around the straight line perpendicular to the upper surface center of circle by a camber line be connected with upper surface and lower surface edge respectively; The upper surface diameter of this lens body is greater than the diameter of lower surface, and this lower surface indent forms a cylindricality accommodation space, and the bottom surface of this cylindricality accommodation space is outer convex surface shape; At grade, and the upper surface of the upper surface of flange and lens body is exiting surface for the upper surface of flange and the upper surface of lens body, and the bottom surface of cylindricality accommodation space is incidence surface, and exiting surface is free scattering curved surface.
2. LED secondary optical lens according to claim 1, is characterized in that, the upper surface indent of described lens body forms the cylinder shape groove along this lens body Axis Extension.
3. LED secondary optical lens according to claim 1, is characterized in that, described exiting surface is latticed or honeycomb type structure.
4. LED secondary optical lens according to claim 1, is characterized in that, the diameter of described exiting surface is 66～81mm.
5. LED secondary optical lens according to claim 1, is characterized in that, the distance between the lower surface of described lens body and the upper surface of described lens body is 35mm.
6. LED secondary optical lens according to claim 1, is characterized in that, the degree of depth of described cylindricality accommodation space is 15mm.
7. LED secondary optical lens according to claim 1, is characterized in that, the LED secondary optical lens also comprises the exiting surface Connection Card zoarium with described lens body, and this engaging body is connected with the LED aluminium base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204923115U CN203363991U (en) | 2013-08-13 | 2013-08-13 | LED (light-emitting diode) secondary optical lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204923115U CN203363991U (en) | 2013-08-13 | 2013-08-13 | LED (light-emitting diode) secondary optical lens |
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| Publication Number | Publication Date |
|---|---|
| CN203363991U true CN203363991U (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204923115U Expired - Fee Related CN203363991U (en) | 2013-08-13 | 2013-08-13 | LED (light-emitting diode) secondary optical lens |
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| Country | Link |
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| CN (1) | CN203363991U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791636A (en) * | 2015-05-07 | 2015-07-22 | 立达信绿色照明股份有限公司 | Reflection lens type led lamp |
| CN104896425A (en) * | 2015-05-18 | 2015-09-09 | 华南理工大学 | LED free-form curved face lens used for optical microscope illumination system |
| CN104989995A (en) * | 2015-06-11 | 2015-10-21 | 横店集团得邦照明股份有限公司 | Sleep lamp for marking time |
-
2013
- 2013-08-13 CN CN2013204923115U patent/CN203363991U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791636A (en) * | 2015-05-07 | 2015-07-22 | 立达信绿色照明股份有限公司 | Reflection lens type led lamp |
| CN104896425A (en) * | 2015-05-18 | 2015-09-09 | 华南理工大学 | LED free-form curved face lens used for optical microscope illumination system |
| CN104896425B (en) * | 2015-05-18 | 2018-01-16 | 华南理工大学 | A kind of LED free-form surface lens for light microscope illuminator |
| CN104989995A (en) * | 2015-06-11 | 2015-10-21 | 横店集团得邦照明股份有限公司 | Sleep lamp for marking time |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20160813 |