CN105570832B - LED lens - Google Patents
LED lens Download PDFInfo
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- CN105570832B CN105570832B CN201410545228.9A CN201410545228A CN105570832B CN 105570832 B CN105570832 B CN 105570832B CN 201410545228 A CN201410545228 A CN 201410545228A CN 105570832 B CN105570832 B CN 105570832B
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- led lens
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- collecting part
- light collecting
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- 201000009310 astigmatism Diseases 0.000 claims abstract description 22
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 5
- 239000010432 diamond Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 125000004492 methyl ester group Chemical group 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a kind of LED lens, it include: light collecting part, the peripheral wall of the light collecting part is fully reflecting surface, and the bottom wall of the light collecting part is equipped with the upwardly recessed groove for being suitable for placing light source, the peripheral wall of the groove constitutes first plane of incidence, and the roof of the groove constitutes second plane of incidence；Astigmatism portion, the astigmatism portion is located at the top of the light collecting part, the upper surface in the astigmatism portion is equipped with multiple light exit portion to raise upward, the multiple smooth exit portion is connected with each other to limit the exit facet of general rectangular, wherein the diamond shape that is projected as four edges concaves of each smooth exit portion on the upper surface in the astigmatism portion.LED lens according to the present invention can more easily generate the hot spot of similar rectangle, and of less demanding to the size and dimension of light source of LED lens.
Description
Technical field
The present invention relates to optical field, in particular to a kind of LED lens.
Background technique
The hot spot approximate ellipse formed at present using more similar rectangular lens, if when requiring light emitting angle little very
There is the effect of rectangle in difficulty.Reason are as follows: for light by lens after light source sending, intermediate rays compare concentration, when light is to two
When side reflects, intermediate light intensity also can be strong, if both direction light emitting angle is not much different, the often ellipse of formation
Hot spot.
Another kind of lens, can be by the intimate 0 ° of hair of lens forming under conditions of lens and dimension of light source conditions permit
Angular, then light is reflected by upper surface to different directions, ultimately forms rectangular light spot, such lens technologies require compared with
It is high.Because low-angle lens forming is the need for many restrictive conditions first, when dimension of light source is sufficiently small relative to lens
Smaller angle lens can be formed.In actual conditions.The size of lens and the size of light source have many limiting factors, are not achieved to be formed
The condition of intimate 0 ° of lens.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
Purpose is to propose a kind of LED lens, and the LED lens are of less demanding to the size of lens and the size of light source, easy to accomplish
Form the hot spot of similar rectangle.
LED lens according to the present invention, comprising: light collecting part, the peripheral wall of the light collecting part are fully reflecting surface, the light collecting part
Bottom wall be equipped with the upwardly recessed groove for being suitable for placing light source, the peripheral wall of the groove constitutes first plane of incidence, the groove
Roof constitute second plane of incidence；Astigmatism portion, the astigmatism portion are located at the top of the light collecting part, the upper surface in the astigmatism portion
Equipped with multiple light exit portion to raise upward, the multiple smooth exit portion is connected with each other to limit the exit facet of general rectangular,
The wherein diamond shape that is projected as four edges concaves of each smooth exit portion on the upper surface in the astigmatism portion.
LED lens according to the present invention can more easily generate the hot spot of similar rectangle, and to the ruler of LED lens
Very little and dimension of light source is of less demanding.
LED lens according to the present invention can also have following additional technical characteristic.
According to one embodiment of present invention, the groove is rotary structure.
According to one embodiment of present invention, second plane of incidence is downwardly projecting curved surface.As a result, via
The light of two planes of incidence is converged to centre, improves the uniformity of hot spot.
According to one embodiment of present invention, the cross-sectional area of the groove is gradually reduced on direction from top to bottom.
According to one embodiment of present invention, the light collecting part is rotary structure.
According to one embodiment of present invention, the cross-sectional area of the light collecting part gradually increases on direction from top to bottom
Greatly.As a result, light is inwardly assembled, the brightness of hot spot is improved at least to a certain extent.
According to one embodiment of present invention, two diagonal lines of each smooth exit portion are curve, the curve
Middle section tilt angle be less than the curve two ends tilt angle.
According to one embodiment of present invention, the top of each smooth exit portion is curved surface protruding upward.
According to one embodiment of present invention, the LED lens are PC part or PMMA part.Guaranteeing that LED lens are saturating as a result,
Under the premise of lightness, the difficulty of processing of LED lens is simplified, and LED lens wearability and electric insulating quality are improved.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the side sectional view of LED lens according to an embodiment of the present invention；
Fig. 2 is the perspective view of LED lens according to an embodiment of the present invention；
Fig. 3 is the beam projecting schematic diagram of LED lens according to an embodiment of the present invention；
Fig. 4 is the stereoscopic schematic diagram of smooth exit portion according to an embodiment of the present invention；
Fig. 5 is the top view of smooth exit portion according to an embodiment of the present invention；
Fig. 6 is the side view of smooth exit portion according to an embodiment of the present invention；
Fig. 7 is the side view at another visual angle of smooth exit portion according to an embodiment of the present invention；
Fig. 8 is the hot spot figure that LED lens according to an embodiment of the present invention simulate formation in software environment.
Appended drawing reference: LED lens 100, light collecting part 1, astigmatism portion 2, fully reflecting surface 11, first plane of incidence 12, second is incident
Face 13, light exit portion 211, exit facet 21, diagonal line 210, groove 102.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
LED lens 100 according to an embodiment of the present invention are described in detail referring to Fig. 1 to Fig. 8.
LED lens 100 according to an embodiment of the present invention may include: light collecting part 1 and astigmatism portion 2.
Wherein, as shown in Figure 1 to Figure 3, light collecting part 1 is entity, and the peripheral wall of light collecting part 1 is fully reflecting surface 11,1 phase of light collecting part
It is optically denser medium for extraneous air, light (is situated between from the air in light collecting part 1 (that is, optically denser medium) the directive external world that is, light is dredged
Matter) when, light will not reflect, but all reflect back into light collecting part 1.
As shown in Figure 1 to Figure 3, the bottom wall of light collecting part 1 is equipped with the upwardly recessed groove 102 for being suitable for placing light source, the light
Source can be LED light source, but not limited to this, while light source can be rounded face light source or the area source of other shapes.
Shown in referring to Fig.1, the peripheral wall of groove 102 constitutes first plane of incidence 12, and the roof of groove 102 constitutes second plane of incidence
13.Light can pass through first plane of incidence 12 and second plane of incidence 13 enters in light collecting part 1.
Specifically, a part of light issued from light source reaches fully reflecting surface 11, warp by the refraction of first plane of incidence 12
The direction that total reflection effect changes light is crossed, so that most light are emitted upwards.Another part light enters by second
It penetrates face 13 to reflect, so that light is emitted directly up.Light collecting part 1 changes the angle of light as a result, so that light source issues
Light assembled 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, says as above-mentioned, and light collecting part 1 is entity, light
In light collecting part 1 after total reflection, it can be emitted from astigmatism portion 2.
As shown in Fig. 2, the upper surface in astigmatism portion 2 is equipped with multiple light exit portion 211 to raise upward, multiple smooth exit portion
211 are connected with each other to limit the exit facet 21 of general rectangular.That is, exit facet 21 is not the smooth song of a monolith
Face, but be spliced by multiple small lens units (that is, light exit portion 211).
Specifically, as shown in figure 5, be projected as four edges of each smooth exit portion 211 in the upper surface in astigmatism portion 2 concave
Diamond shape.It is, the shape of the bottom surface of each smooth exit portion 211 is diamond shape, the four edges of the bottom surface of each smooth exit portion 211
It inwardly concaves, the upper surface of each smooth exit portion 211 raises upward and be the curved surface of rounding off.
The forming process of rectangular light spot is described in detail with reference to the accompanying drawings.
As shown in figure 3, a part of light is refracted in light collecting part 1 by first plane of incidence 12 after light source emits beam
Portion, light pass through the total reflection effect of fully reflecting surface 11, change direction and are emitted upwards via exit facet 21.Another part light warp
It crosses after second plane of incidence 13 reflects after entering in light collecting part 1 and is directly emitted by exit facet 21.Due to exit facet 21 be by
Multiple light exit portion 211 with special tectonic form, light from the bottom of light exit portion 211 it is incident after, light exit portion 211
The hot spot of similar rectangle can be ultimately formed by light to the directional divergence of off-diagonal.
LED lens 100 according to an embodiment of the present invention are converged the light of light source by light collecting part 1, then by by more
The hot spot that similar rectangle is formed after the exit facet 21 that a light exit portion 211 forms, is easier via the light source of the LED lens 100
The hot spot of similar rectangle is generated, and of less demanding to the size and dimension of light source of LED lens 100.
In some embodiments of the invention, as shown in Figure 1 to Figure 3, groove 102 is formed as rotary structure.
Further, the cross-sectional area of groove 102 is gradually reduced 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 downwardly projecting song
Face.As a result, the light via second plane of incidence 13 is converged to centre, the uniformity of hot spot is improved.
In some examples of the 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 is gradually increased on direction from top to bottom.Optionally, light collecting part 1 can be with
It is configured to up big and down small rotary table.As a result, light is inwardly assembled, the brightness of hot spot is improved at least to a certain extent.
In some embodiments of the invention, as shown in Figures 4 to 7, two diagonal lines 210 of each smooth exit portion 211
It is curve, the tilt angle of the middle section of curve is less than the tilt angle of two ends of curve.
Specifically, the middle section of every diagonal line 210 is less than often relative to the tilt angle of the upper surface in astigmatism portion 2
Tilt angle of the end of diagonal line 210 relative to the upper surface in astigmatism portion 2.That is, the centre of two diagonal lines 210
Part is relatively gentle, and the end of two diagonal lines 210 is relatively steep.
Some specific examples according to the present invention, as shown in figures 1 and 3, fully reflecting surface 11 is formed as the curved surface of evagination.It is poly-
The periphery wall (that is, fully reflecting surface 11) in light portion 1 is direction (that is, outside direction as shown in Figure 1) protrusion for being directed away from groove 102
Face.The ability that fully reflecting surface 11 inwardly assembles light is further improved as a result,.
In some embodiments of the invention, such as Fig. 4, Fig. 6 and Fig. 7 and as shown in connection with fig. 1, each smooth exit portion 211
Top surface is the curved surface to raise upward.It is sayed as above-mentioned, the upper surface in astigmatism portion 2 is equipped with multiple smooth exit portion 211, Mei Geguang
The top surface (that is, upper surface as shown in Figure 1) of exit portion 211 is the curved surface to raise upward, the bottom table of each smooth exit portion 211
Face is plane, and multiple planes and the upper surface in astigmatism portion 2 fit together, and multiple curved surfaces to raise upward constitute exit facet
21。
In some examples of the invention, LED lens 100 are PC (that is, polycarbonate) part or PMMA (that is, poly- methyl-prop
E pioic acid methyl ester) part.As a result, under the premise of guaranteeing 100 transparency of LED lens, the difficulty of processing of LED lens 100 is simplified, and
100 wearability of LED lens and electric insulating quality are improved.
Certainly, the material selection of LED lens 100 is a kind of preferred embodiment in this example, and designer can be with
The material of LED lens 100 is selected according to actual needs.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (8)
1. a kind of LED lens characterized by comprising
Light collecting part, the peripheral wall of the light collecting part are fully reflecting surface, and the bottom wall of the light collecting part is suitable for placing equipped with upwardly recessed
The groove of light source, the peripheral wall of the groove constitute first plane of incidence, and the roof of the groove constitutes second plane of incidence；
Astigmatism portion, the astigmatism portion are located at the top of the light collecting part, and the upper surface in the astigmatism portion is equipped with multiple raise upward
Light exit portion, the multiple smooth exit portion is connected with each other to limit the exit facet of general rectangular, wherein each light goes out
Penetrate the diamond shape that is projected as four edges concaves of the portion on the upper surface in the astigmatism portion；
Two diagonal lines of each smooth exit portion are curve, and the tilt angle of the middle section of the curve is less than described
The tilt angle of two ends of curve.
2. LED lens according to claim 1, which is characterized in that the groove is rotary structure.
3. LED lens according to claim 1, which is characterized in that second plane of incidence is downwardly projecting curved surface.
4. LED lens according to claim 2, which is characterized in that the cross-sectional area of the groove is in side from top to bottom
It is gradually reduced upwards.
5. LED lens according to claim 1, which is characterized in that the light collecting part is rotary structure.
6. LED lens according to claim 5, which is characterized in that the cross-sectional area of the light collecting part is from top to bottom
It is gradually increased on direction.
7. LED lens according to claim 1, which is characterized in that the top of each smooth exit portion is protruding upward
Curved surface.
8. LED lens according to claim 1, which is characterized in that the 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 CN105570832A (en) | 2016-05-11 |
| CN105570832B true CN105570832B (en) | 2019-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410545228.9A Active CN105570832B (en) | 2014-10-15 | 2014-10-15 | LED lens |
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| Country | Link |
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| CN (1) | CN105570832B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764939B (en) * | 2016-12-06 | 2019-05-17 | 中山大学 | A kind of collimation lens for eliminating stray light |
| CN109798488B (en) * | 2017-11-17 | 2020-07-10 | 比亚迪股份有限公司 | Automobile headlamp lens, production line and manufacturing 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 |
| CN118160022A (en) * | 2022-08-31 | 2024-06-07 | 京东方科技集团股份有限公司 | Lens, lens array, display module and display device |
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| CN201852038U (en) * | 2010-12-01 | 2011-06-01 | 浚洸光学科技股份有限公司 | Optical element |
| CN102313245A (en) * | 2011-09-09 | 2012-01-11 | 中国科学院宁波材料技术与工程研究所湖州新能源产业创新中心 | Light emitting diode (LED) lamp lens |
| CN202303191U (en) * | 2011-10-18 | 2012-07-04 | 东莞雷笛克光学有限公司 | Lens structure |
| CN102654268A (en) * | 2011-03-02 | 2012-09-05 | 北京工业大学 | LED (Light-Emitting Diode) lens device, LED lens device module and LED lamp device |
| KR101195239B1 (en) * | 2012-03-28 | 2012-10-29 | 김주환 | Square lighting lens |
| 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
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201852038U (en) * | 2010-12-01 | 2011-06-01 | 浚洸光学科技股份有限公司 | Optical element |
| CN102654268A (en) * | 2011-03-02 | 2012-09-05 | 北京工业大学 | LED (Light-Emitting Diode) lens device, LED lens device module and LED lamp device |
| CN102313245A (en) * | 2011-09-09 | 2012-01-11 | 中国科学院宁波材料技术与工程研究所湖州新能源产业创新中心 | Light emitting diode (LED) lamp lens |
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| KR101195239B1 (en) * | 2012-03-28 | 2012-10-29 | 김주환 | Square lighting lens |
| 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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| CN105570832A (en) | 2016-05-11 |
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