CN205079170U - Light -emitting diode (LED) lens - Google Patents
Light -emitting diode (LED) lens Download PDFInfo
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- CN205079170U CN205079170U CN201520803143.6U CN201520803143U CN205079170U CN 205079170 U CN205079170 U CN 205079170U CN 201520803143 U CN201520803143 U CN 201520803143U CN 205079170 U CN205079170 U CN 205079170U
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- lens body
- led
- free form
- lens
- cavity
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Abstract
The utility model provides a light -emitting diode (LED) lens, which comprises a lens body, the lens body has the bottom surface, inwards cave in and form the cavity that is used for holding the LED light source in the middle part of bottom surface, the cavity is the semicircle sphere, convex curved surface on the spherical cavity place lens body of this semicircle does go into the plain noodles, the surface that the lens body surrounded the lens body part of bottom surface does go out the plain noodles, go out the well mind -set on plain noodles on the lens body the sunken last concave surface that forms in income plain noodles of lens body, be provided with on the play plain noodles of lens body and center on go up the annular groove of concave surface, the last concave surface of lens body with be connected with a free -form surface between the annular groove. The utility model discloses a light -emitting diode (LED) lens is comparatively energy -conserving, manufacturing cost is lower and can produce crossed circle facula illuminating effect. The facula that obtains through this lens body is the distribution of centrosymmetric crossed circle, and the illuminating effect light and shade is alternate, and the fringe spacing equals and brightness uniformity.
Description
Technical field
The utility model relates to technical field of LED illumination, is specifically related to a kind of LED lens for the formation of Crossed Circle hot spot.
Background technology
LED light source is widely used at lighting field.During LED light source is produced, mounted lens on LED usually, carries out luminous intensity distribution design by secondary optical lens, namely install on the basis making intact single LED lamp independently lens to carry out luminous intensity distribution design.Existing LED lamp is all adopt single lamp configuration simple lens in illumination, in order to realize the collocation of colour effect of riot of color, adopts the lens of respective numbers that the photochromic LED lamp bead of multiple difference arranges in pairs or groups to realize.
Along with the raising of quality of life, people, while the illumination of pursuit basis, also wish that LED lamp can be full of intention, and decoration setting, builds atmosphere.Crossed Circle hot spot light and shade alternately, can increase space hierarchy, can be used in scenery, intention decoration etc.Realize the illuminating effect of Crossed Circle hot spot if want, usually have two kinds of methods: one is blocked light-emitting area by light tight annex; Another kind is that each LED is responsible for different field of illuminations by adopting multiple LED combination.Above two kinds of methods all have deficiency, and the former light efficiency loss is serious, energy-conservation not, and the latter's fitting structure is complicated, and cost is high.Therefore, people in the urgent need to a kind of LED lens, to fill up the deficiency of above-mentioned situation.
Utility model content
The purpose of this utility model is to provide a kind of LED lens that can produce Crossed Circle hot spot illuminating effect.
To achieve these goals, the utility model adopts following technical scheme:
A kind of LED lens, comprise lens body, described lens body has bottom surface, and the middle part of described bottom surface caves inward the cavity formed for holding LED light source, and described cavity is that semicircle is spherical; Arc-shaped surface in this semicircle spherical cavity place lens body is described incidence surface, and the outer surface that described lens body surrounds the lens body part of bottom surface is described exiting surface; The upper recess surface that in described lens body, the center of exiting surface is recessed to form to the incidence surface of described lens body, the exiting surface of described lens body is provided with the annular groove around described upper recess surface, the first free form surface is connected with, the annular groove in described lens body and be connected with the second free form surface between described bottom surface between the upper recess surface of described lens body and described annular groove; Described first free form surface arches upward formation arc outside described lens body, and described second free form surface arches upward formation arc outside described lens body.
Improve as one of the present utility model, in described lens body, the first free form surface arches upward and forms the length of arc and be less than described second free form surface in described lens body and arch upward outside described lens body and form the length of arc outside described lens body.
Improve as one of the present utility model, in described lens body, the peak of the first free form surface is greater than the distance of peak to described bottom surface of the second free form surface in described lens body to the distance of described bottom surface.
Improve as one of the present utility model, the concave surface center of the upper recess surface in described lens body is less than the distance of peak to described bottom surface of described first free form surface to described bottom surface distance.
Improve as one of the present utility model, the cavity of described lens body is positioned at immediately below the upper recess surface of described lens body.
As of the present utility model one improve, described bottom surface is annular, the plane at the place, bottom surface of described lens body and the axis of these LED lens perpendicular.
Improve as one of the present utility model, the radius of described cavity is less than the radius of described second free form surface.
Improve as one of the present utility model, described lens body is formed in one.
Improve as one of the present utility model, in described lens body, the first free form surface is 5-8mm to the distance of described bottom surface, in described lens body, the second free form surface is 4.7-6.7mm to the distance of described bottom surface, the radius of described lens body upper semi-circle spherical cavity is 1.5-3.5mm, and the radius of described bottom surface is 4-6mm.
Adopt technique scheme, the utility model has the following advantages: one, and LED lens of the present utility model are comparatively energy-conservation, production cost is lower and can produce Crossed Circle hot spot illuminating effect.It two, the utility model LED is Rotational Symmetry model, and adopt transparent material one-body molded, light extraction efficiency is high, and cost is low and be easy to machine-shaping.Its three, LED lens arrangement of the present utility model is simple, and design ingenious, light enters lens body by incidence surface, the refraction of scioptics body, from exiting surface injection, thus forms brightness uniformity and the equal Crossed Circle hot spot of spacing.The Crossed Circle distribution that the hot spot obtained through this lens body is centrosymmetric, illuminating effect is light and dark, the equal and brightness uniformity of fringe spacing.Be conducive to saving light source, reduce light loss, improve light extraction efficiency; Be applicable to room lighting etc., meet the life requirement of people.
Accompanying drawing explanation
Fig. 1 is the structure top view of a kind of LED lens of the present utility model.
Fig. 2 is the structure upward view of a kind of LED lens of the present utility model.
Fig. 3 is A-A section structure schematic diagram in Fig. 1.
Fig. 4 is the hot spot schematic diagram of a kind of LED lens of the present utility model.
Indicate corresponding as follows in figure:
10-bottom surface; 20-incidence surface;
30-exiting surface; 201-cavity;
301-upper recess surface; 302-annular groove;
303-first free form surface; 304-second free form surface.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
As shown in Figures 1 to 3, a kind of LED lens that the present embodiment provides, it is for regulating the light of light emitting diode, to obtain required brightness uniformity hot spot.These LED lens comprise lens body, and described lens body has bottom surface 10, and the middle part of described bottom surface 10 caves inward the cavity 201 formed for holding LED light source, and described cavity 201 is spherical in semicircle; Arc-shaped surface in this semicircle spherical cavity 201 place lens body is described incidence surface 20, and the outer surface that described lens body surrounds the lens body part of bottom surface 10 is described exiting surface 30; Light enters LED lens by incidence surface 20, then is penetrated from exiting surface 30 by the refraction of LED lens, forms uniform-illumination and the equal Crossed Circle hot spot (as shown in Figure 4) of spacing.The upper recess surface 301 that in lens body, the center of exiting surface 30 is recessed to form to the incidence surface 20 of lens body, the upper recess surface 301 of lens body is positioned at directly over cavity 201.The exiting surface 30 of described lens body is provided with the annular groove 302 around upper recess surface 301, be connected with the first free form surface 303 between the upper recess surface 301 of lens body and annular groove 302, lens body is connected with the second free form surface 304 between annular groove 302 and bottom surface 10; First free form surface 303 arches upward formation arc outside lens body, and the second free form surface 304 arches upward formation arc outside lens body.These LED lens are the symmetry model rotated around axis.The Crossed Circle hot spot illuminating effect that these LED lens produce is dispersed light by two interior recesses of exiting surface 30, and convex surface carries out convergence to light and forms.Adopt the LED lens of above-mentioned structure to have light extraction efficiency high, structure is simple, the feature that cost is low.
As shown in Figure 3, the exiting surface 30 of LED lens is also discontinuous, but be closely made up of around the first free form surface 303 the second free form surface 304, two free form surface junctions are folded with annular groove 302, exiting surface 30 entirety is roughly in convex surface, can converge light, exiting surface 30 center of lens body is recessed to form upper recess surface 301 to the incidence surface 20 of lens body.Must not higher than the centre-height of the first free form surface 303 bottom upper recess surface 301, and upper recess surface 301 must with the first free form surface 303 compact siro spinning technology, can disperse light, because which form the light and dark Crossed Circle hot spot that center is blackening.
As shown in Figure 3, enter LED lens according to light to carry out reflecting and scattering, in order to make to reflect light collection, improve brightness, reduce light decay, arch upward outside lens body form the length of arc so the length adopting the first free form surface 303 in lens body to arch upward outside lens body to form arc is less than the second free form surface 304 in lens body.In lens body, the peak of the first free form surface 303 is greater than the distance of peak to bottom surface 10 of the second free form surface 304 in lens body to the distance of bottom surface 10.The concave surface center of the upper recess surface 301 in lens body is less than the distance of peak to bottom surface 10 of the first free form surface 303 to bottom surface 10 distance.Produce obvious Crossed Circle hot spot effect according to LED lens and adjust spot width, preferably, the first free form surface 303 of LED lens is 6mm to the distance of bottom surface 10, and the second free form surface 304 is to the distance 5.7mm of bottom surface 10.
As shown in figures 2-3, conveniently install, the bottom surface 10 of lens body is rounded, the plane at the place, bottom surface 10 of lens body and the axis of these LED lens perpendicular.Bottom surface 10 is connected to the edge of exiting surface 30 and incidence surface 20.But form a cavity 201 owing to upwards caving in the middle part of bottom surface 10, so bottom surface 10 is in annular, cavity 201 is roughly spherical in semicircle, and for accommodating light emitting diode, the inwall of cavity 201 is the incidence surface 20 of LED lens.The radius of cavity 201 is less than the radius of the second free form surface 304.Produce obvious Crossed Circle hot spot effect according to LED lens and adjust spot width, preferably, bottom surface 10 radius of LED lens is 5mm, and the radius of spheroidal cavity 201 is 2.5mm.
In the present embodiment, LED lens are one-body molded by transparent material, as epoxy resin, silica gel, glass etc.LED lens are rotational symmetry structure, and entirety is roughly rounded.Employing transparent material is one-body molded, and light extraction efficiency is high, and cost is low and be easy to machine-shaping, is conducive to reducing production cost.
In the present embodiment, the width of ring-shaped light spot that the utility model can be formed after LED lens according to light regulates.Above-mentioned the first free form surface 303 provided is only an a kind of preferred packet size of the utility model to the distance of bottom surface 10, the second free form surface 304 to the distance of bottom surface 10, bottom surface 10 radius and cavity 201 radius, and one not of the present utility model limits.Employing different size sets, the ring-shaped light spot effect produced, and the advantage had is as described above, just not at Ao Shuliao.
By reference to the accompanying drawings detailed description is done to the utility model above; but embodiment of the present utility model is not limited in above-mentioned embodiment; those skilled in the art can make various distortion to the utility model according to prior art, all belong to protection domain of the present utility model.
Claims (9)
1. LED lens, comprise lens body, it is characterized in that: described lens body has bottom surface, and the middle part of described bottom surface caves inward the cavity formed for holding LED light source, and described cavity is that semicircle is spherical; Arc-shaped surface in this semicircle spherical cavity place lens body is described incidence surface, and the outer surface that described lens body surrounds the lens body part of bottom surface is described exiting surface; The upper recess surface that in described lens body, the center of exiting surface is recessed to form to the incidence surface of described lens body, the exiting surface of described lens body is provided with the annular groove around described upper recess surface, the first free form surface is connected with, the annular groove in described lens body and be connected with the second free form surface between described bottom surface between the upper recess surface of described lens body and described annular groove; Described first free form surface arches upward formation arc outside described lens body, and described second free form surface arches upward formation arc outside described lens body.
2. a kind of LED lens as claimed in claim 1, is characterized in that: in described lens body, the first free form surface arches upward and forms the length of arc and be less than described second free form surface in described lens body and arch upward outside described lens body and form the length of arc outside described lens body.
3. a kind of LED lens as claimed in claim 1, is characterized in that: in described lens body, the peak of the first free form surface is greater than the distance of peak to described bottom surface of the second free form surface in described lens body to the distance of described bottom surface.
4. a kind of LED lens as claimed in claim 1, is characterized in that: the concave surface center of the upper recess surface in described lens body is less than the distance of peak to described bottom surface of described first free form surface to described bottom surface distance.
5. a kind of LED lens as claimed in claim 1, is characterized in that: the cavity of described lens body is positioned at immediately below the upper recess surface of described lens body.
6. a kind of LED lens as claimed in claim 1, is characterized in that: described bottom surface is annular, the plane at the place, bottom surface of described lens body and the axis of these LED lens perpendicular.
7. a kind of LED lens as claimed in claim 1, is characterized in that: the radius of described cavity is less than the radius of described second free form surface.
8. a kind of LED lens as claimed in claim 1, is characterized in that: described lens body is formed in one.
9. a kind of LED lens as claimed in claim 1, it is characterized in that: in described lens body, the first free form surface is 5-8mm to the distance of described bottom surface, in described lens body, the second free form surface is 4.7-6.7mm to the distance of described bottom surface, the radius of described lens body upper semi-circle spherical cavity is 1.5-3.5mm, and the radius of described bottom surface is 4-6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520803143.6U CN205079170U (en) | 2015-10-16 | 2015-10-16 | Light -emitting diode (LED) lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520803143.6U CN205079170U (en) | 2015-10-16 | 2015-10-16 | Light -emitting diode (LED) lens |
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| Publication Number | Publication Date |
|---|---|
| CN205079170U true CN205079170U (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520803143.6U Expired - Fee Related CN205079170U (en) | 2015-10-16 | 2015-10-16 | Light -emitting diode (LED) lens |
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| CN (1) | CN205079170U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816702A (en) * | 2017-11-15 | 2018-03-20 | 惠州市日泰信光电有限公司 | A kind of Novel asymmetric designs LED lens |
-
2015
- 2015-10-16 CN CN201520803143.6U patent/CN205079170U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816702A (en) * | 2017-11-15 | 2018-03-20 | 惠州市日泰信光电有限公司 | A kind of Novel asymmetric designs LED lens |
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| 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 |
Granted publication date: 20160309 Termination date: 20161016 |
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| CF01 | Termination of patent right due to non-payment of annual fee |