CN105570832A - Led lens - Google Patents
Led lens Download PDFInfo
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- CN105570832A CN105570832A CN201410545228.9A CN201410545228A CN105570832A CN 105570832 A CN105570832 A CN 105570832A CN 201410545228 A CN201410545228 A CN 201410545228A CN 105570832 A CN105570832 A CN 105570832A
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- collecting part
- light collecting
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- 201000009310 astigmatism Diseases 0.000 claims description 18
- 238000000149 argon plasma sintering Methods 0.000 abstract 4
- 230000005494 condensation Effects 0.000 abstract 4
- 238000009833 condensation Methods 0.000 abstract 4
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 239000000463 material Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M methacrylate group Chemical group C(C(=C)C)(=O)[O-] CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Abstract
The invention discloses an LED lens. The LED lens comprises a light condensation part and a light scattering part; the peripheral wall of the light condensation part is a full-reflection face, an upwards-concave groove suitable for containing a light source is formed in the bottom wall of the light condensation part, a first incident plane is formed by the peripheral wall of the groove, and a second incident plane is formed by the top wall of the groove; and the light scattering part is arranged at the top of the light condensation part, a plurality of upwards-protruding light outgoing parts are arranged on the upper surface of the light scattering part, and the multiple light outgoing parts are connected to limit a roughly-rectangular exiting face, wherein the projection of each light outgoing part on the upper surface of the light scattering part is an inwards-concave rhombus with four edges. According to the LED lens, similarly-rectangular light spots can be generated more easily, and the requirements for the size of the LED lens and the size of the light source are not high.
Description
Technical field
The present invention relates to optical field, particularly a kind of LED lens.
Background technology
The hot spot sub-elliptical of the similar rectangular lens formation that current use is more, if be difficult to the effect occurring rectangle when requiring that lighting angle is little.Reason is: through lens after light sends from light source, intermediate rays is more concentrated, and when light reflects to both sides, middle light intensity also can by force, if when both direction lighting angle is more or less the same, and the ellipse light spot often of formation.
Another kind of lens are under the condition of lens and dimension of light source conditions permit, and can be close to 0 ° of lighting angle through lens forming, then light reflects to different directions through upper surface, finally forms rectangular light spot, and this type of lens technologies requires higher.Because first low-angle lens forming needs a lot of restrictive condition, dimension of light source enough relative to lens hour ability forms smaller angle lens.In actual conditions.The size of lens and the size of light source have a lot of limiting factor, do not reach the condition being formed and be close to 0 ° of lens.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the object of the invention is to propose a kind of LED lens, the dimensional requirement of these LED lens to the size of lens and light source is not high, easily realizes the hot spot forming similar rectangle.
According to LED lens of the present invention, comprise: light collecting part, the perisporium of described light collecting part is fully reflecting surface, and the diapire of described light collecting part is provided with the groove being suitable for placing light source to being recessed on, the perisporium of described groove forms first plane of incidence, and the roof of described groove forms second plane of incidence; Astigmatism portion, described astigmatism portion is located at the top of described light collecting part, the upper surface in described astigmatism portion is provided with multiple light exit portion raised up, described multiple smooth exit portion is connected with each other the exit facet limiting general rectangular, and wherein each described smooth exit portion is projected as the rhombus that four edges concaves on the upper surface in described astigmatism portion.
According to LED lens of the present invention, the hot spot of similar rectangle can be generated more easily, and to the size of LED lens and dimension of light source less demanding.
LED lens according to the present invention can also have following additional technical characteristic.
According to one embodiment of present invention, described groove is rotary structure.
According to one embodiment of present invention, described second plane of incidence is the curved surface protruded downwards.Thus, make light via second plane of incidence to converges, improve the uniformity of hot spot.
According to one embodiment of present invention, the cross-sectional area of described groove reduces gradually on direction from top to bottom.
According to one embodiment of present invention, described light collecting part is rotary structure.
According to one embodiment of present invention, the cross-sectional area of described light collecting part increases gradually on direction from top to bottom.Thus, light is inwardly assembled, improve the brightness of hot spot at least to a certain extent.
According to one embodiment of present invention, two diagonal of each described smooth exit portion are curve, and the angle of inclination of the mid portion of described curve is less than the angle of inclination of two ends of described curve.
According to one embodiment of present invention, the top of each described smooth exit portion is curved surface protruding upward.
According to one embodiment of present invention, described LED lens are PC part or PMMA part.Thus, under the prerequisite ensureing LED lens clarity, simplify the difficulty of processing of LED lens, and LED lens wearability and electric insulating quality are improved.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the side sectional view of the LED lens according to the embodiment of the present invention;
Fig. 2 is the stereogram of the LED lens according to the embodiment of the present invention;
Fig. 3 is the beam projecting schematic diagram of the LED lens according to the embodiment of the present invention;
Fig. 4 is the schematic perspective view of the light exit portion according to the embodiment of the present invention;
Fig. 5 is the top view of the light exit portion according to the embodiment of the present invention;
Fig. 6 is the side view of the light exit portion according to the embodiment of the present invention;
Fig. 7 is the side view at another visual angle of light exit portion according to the embodiment of the present invention;
Fig. 8 is the hot spot figure simulating formation according to the LED lens of the embodiment of the present invention in software environment.
Reference numeral: LED lens 100, light collecting part 1, astigmatism portion 2, fully reflecting surface 11, first plane of incidence 12, second plane of incidence 13, light exit portion 211, exit facet 21, diagonal 210, groove 102.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
Referring to Fig. 1 to Fig. 8, the LED lens 100 according to the embodiment of the present invention are described in detail.
According to the LED lens 100 of the embodiment of the present invention, can comprise: light collecting part 1 and astigmatism portion 2.
Wherein, as shown in Figure 1 to Figure 3, light collecting part 1 is entity, the perisporium of light collecting part 1 is fully reflecting surface 11, and light collecting part 1 is optically denser medium relative to the air in the external world, and light from light collecting part 1 (namely, optically denser medium) the directive external world air (namely, optically thinner medium) time, light can not reflect, but all reflects back in light collecting part 1.
As shown in Figure 1 to Figure 3, the diapire of light collecting part 1 is provided with the groove 102 being suitable for placing light source to being recessed on, and this light source can be LED light source, but is not limited thereto, and light source can be the area source of rounded face light source or other shapes simultaneously.
With reference to shown in Fig. 1, the perisporium of groove 102 forms first plane of incidence 12, and the roof of groove 102 forms second plane of incidence 13.Light can enter in light collecting part 1 through first plane of incidence 12 and second plane of incidence 13.
Particularly, a part of light sent from light source arrives fully reflecting surface 11 through the refraction of first plane of incidence 12, changes the direction of light, make the upwards outgoing of most light through total reflection effect.Another part light reflects through second plane of incidence 13, makes light directly to upper outgoing.Thus, light collecting part 1 changes the angle of light, and the light that light source is sent obtains gathering to a certain extent.
As shown in Figure 1 to Figure 3, astigmatism portion 2 is located at the top of light collecting part 1, and say as above-mentioned, light collecting part 1 is entity, light in light collecting part 1 after total reflection, can from astigmatism portion 2 outgoing.
As shown in Figure 2, the upper surface in astigmatism portion 2 is provided with multiple light exit portion 211 raised up, and multiple smooth exit portion 211 is connected with each other the exit facet 21 limiting general rectangular.That is, exit facet 21 is not the level and smooth curved surface of a monoblock, but is spliced by multiple little lens unit (that is, light exit portion 211).
Particularly, as shown in Figure 5, the upper surface of each smooth exit portion 211 in astigmatism portion 2 be projected as the rhombus that four edges concaves.Namely, the shape of the bottom surface of each smooth exit portion 211 is rhombus, and the four edges of the bottom surface of each smooth exit portion 211 inwardly concaves, and the upper surface of each smooth exit portion 211 raises up and is the curved surface of rounding off.
Describe the forming process of rectangular light spot with reference to the accompanying drawings in detail.
As shown in Figure 3, after light source emits beam, a part of light through first plane of incidence 12 to be refracted to light collecting part 1 inner, light, through the total reflection effect of fully reflecting surface 11, changes direction upwards via exit facet 21 outgoing.Another part light enters into after in light collecting part 1 directly by exit facet 21 outgoing after second plane of incidence 13 reflects.Because exit facet 21 is made up of multiple light exit portion 211 with special tectonic, light is after the bottom incidence of light exit portion 211, and light exit portion 211 can by light to off-diagonal directional divergence, the final hot spot forming similar rectangle.
According to the LED lens 100 of the embodiment of the present invention, by the light collection of light collecting part 1 by light source, then after the exit facet 21 be made up of multiple smooth exit portion 211, form the hot spot of similar rectangle, light source via these LED lens 100 more easily generates the hot spot of similar rectangle, and to the size of LED lens 100 and dimension of light source less demanding.
In specific embodiments more of the present invention, as shown in Figure 1 to Figure 3, groove 102 is formed as rotary structure.
Further, the cross-sectional area of groove 102 reduces gradually on direction from top to bottom.
In some embodiments of the invention, as shown in figures 1 and 3, second plane of incidence 13 is formed as the curved surface of protrusion downwards.Thus, make light via second plane of incidence 13 to converges, improve the uniformity of hot spot.
In examples more of the present invention, as shown in Figure 1 to Figure 3, light collecting part 1 is formed as rotary structure.Further, as shown in figures 1 and 3, the cross-sectional area of light collecting part 1 increases gradually on direction from top to bottom.Alternatively, light collecting part 1 can be configured to up big and down small round platform.Thus, light is inwardly assembled, improve the brightness of hot spot at least to a certain extent.
In some embodiments of the invention, as shown in Figures 4 to 7, two diagonal 210 of each smooth exit portion 211 are curve, and the angle of inclination of the mid portion of curve is less than the angle of inclination of two ends of curve.
Specifically, the mid portion of every bar diagonal 210 is less than the angle of inclination of end relative to the upper surface in astigmatism portion 2 of every bar diagonal 210 relative to the angle of inclination of the upper surface in astigmatism portion 2.That is, the mid portion of two diagonal 210 is relatively mild, and the end of two diagonal 210 is relatively steep.
According to concrete examples more of the present invention, as shown in figures 1 and 3, fully reflecting surface 11 is formed as the curved surface of evagination.The periphery wall (that is, fully reflecting surface 11) of light collecting part 1 is the face of protruding towards the direction (that is, outer direction) as shown in Figure 1 away from groove 102.Thus, the ability that light is inwardly assembled by fully reflecting surface 11 is further increased.
In some embodiments of the invention, as Fig. 4, Fig. 6 and Fig. 7 and shown in composition graphs 1, the top surface of each smooth exit portion 211 is the curved surface raised up.Say as above-mentioned, the upper surface in astigmatism portion 2 is provided with multiple smooth exit portion 211, the top surface of each smooth exit portion 211 (namely, upper surface as shown in Figure 1) curved surface for raising up, the basal surface of each smooth exit portion 211 is plane, the upper surface in multiple plane and astigmatism portion 2 fits together, and multiple curved surface raised up constitutes exit facet 21.
In examples more of the present invention, LED lens 100 are PC (that is, Merlon) part or PMMA (that is, polymethyl methacrylate) part.Thus, under the prerequisite ensureing LED lens 100 transparency, simplify the difficulty of processing of LED lens 100, and LED lens 100 wearability and electric insulating quality are improved.
Certainly, in this example the Material selec-tion of LED lens 100 be one preferred embodiment, designer can select the material of LED lens 100 according to actual needs.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (9)
1. LED lens, is characterized in that, comprising:
Light collecting part, the perisporium of described light collecting part is fully reflecting surface, and the diapire of described light collecting part is provided with the groove being suitable for placing light source to being recessed on, and the perisporium of described groove forms first plane of incidence, and the roof of described groove forms second plane of incidence;
Astigmatism portion, described astigmatism portion is located at the top of described light collecting part, the upper surface in described astigmatism portion is provided with multiple light exit portion raised up, described multiple smooth exit portion is connected with each other the exit facet limiting general rectangular, and wherein each described smooth exit portion is projected as the rhombus that four edges concaves on the upper surface in described astigmatism portion.
2. LED lens according to claim 1, is characterized in that, described groove is rotary structure.
3. LED lens according to claim 1, is characterized in that, described second plane of incidence is the curved surface protruded downwards.
4. LED lens according to claim 2, is characterized in that, the cross-sectional area of described groove reduces gradually on direction from top to bottom.
5. LED lens according to claim 1, is characterized in that, described light collecting part is rotary structure.
6. LED lens according to claim 5, is characterized in that, the cross-sectional area of described light collecting part increases gradually on direction from top to bottom.
7. LED lens according to claim 1, is characterized in that, two diagonal of each described smooth exit portion are curve, and the angle of inclination of the mid portion of described curve is less than the angle of inclination of two ends of described curve.
8. LED lens according to claim 1, is characterized in that, the top of each described smooth exit portion is curved surface protruding upward.
9. LED lens according to claim 1, is characterized in that, described LED lens are PC part or PMMA part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410545228.9A CN105570832B (en) | 2014-10-15 | 2014-10-15 | LED lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410545228.9A CN105570832B (en) | 2014-10-15 | 2014-10-15 | LED lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105570832A true CN105570832A (en) | 2016-05-11 |
| CN105570832B CN105570832B (en) | 2019-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410545228.9A Active CN105570832B (en) | 2014-10-15 | 2014-10-15 | LED lens |
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| CN (1) | CN105570832B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764939A (en) * | 2016-12-06 | 2017-05-31 | 中山大学 | A kind of collimation lens for eliminating veiling glare |
| CN109798488A (en) * | 2017-11-17 | 2019-05-24 | 比亚迪股份有限公司 | Headlight for vehicles lens, production line and production method |
| CN110070807A (en) * | 2019-06-03 | 2019-07-30 | 中山市天之河照明有限公司 | A kind of penetrating beam condensing unit |
| WO2024045055A1 (en) * | 2022-08-31 | 2024-03-07 | 京东方科技集团股份有限公司 | Lens, lens array, display module, and display apparatus |
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| CN202303191U (en) * | 2011-10-18 | 2012-07-04 | 东莞雷笛克光学有限公司 | Lens structure |
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| CN103206669A (en) * | 2013-03-22 | 2013-07-17 | 中国科学院长春光学精密机械与物理研究所 | Non-imaging optical lens for LED (Light Emitting Diode) reversing light of car |
| CN203605148U (en) * | 2013-09-13 | 2014-05-21 | 东莞市欧科光电科技有限公司 | Novel rectangular light spot LED lens |
| CN204227312U (en) * | 2014-10-15 | 2015-03-25 | 惠州比亚迪实业有限公司 | Led lens |
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2014
- 2014-10-15 CN CN201410545228.9A patent/CN105570832B/en active Active
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764939A (en) * | 2016-12-06 | 2017-05-31 | 中山大学 | A kind of collimation lens for eliminating veiling glare |
| CN106764939B (en) * | 2016-12-06 | 2019-05-17 | 中山大学 | A kind of collimation lens for eliminating stray light |
| CN109798488A (en) * | 2017-11-17 | 2019-05-24 | 比亚迪股份有限公司 | Headlight for vehicles lens, production line and production method |
| CN110070807A (en) * | 2019-06-03 | 2019-07-30 | 中山市天之河照明有限公司 | A kind of penetrating beam condensing unit |
| WO2024045055A1 (en) * | 2022-08-31 | 2024-03-07 | 京东方科技集团股份有限公司 | Lens, lens array, display module, and display apparatus |
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| Publication number | Publication date |
|---|---|
| CN105570832B (en) | 2019-05-17 |
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