CN105546477B - A kind of lateral optical lens of LED - Google Patents
A kind of lateral optical lens of LED Download PDFInfo
- Publication number
- CN105546477B CN105546477B CN201511035096.6A CN201511035096A CN105546477B CN 105546477 B CN105546477 B CN 105546477B CN 201511035096 A CN201511035096 A CN 201511035096A CN 105546477 B CN105546477 B CN 105546477B
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- China
- Prior art keywords
- lens
- incidence surface
- incidence
- out part
- extracting portion
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- 230000003287 optical effect Effects 0.000 title claims abstract description 49
- 230000007423 decrease Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005286 illumination Methods 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 241001465382 Physalis alkekengi Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Lenses (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a kind of lateral optical lens of LED, the lens include set on the planar light extracting portion of top surface, and it is connected to the curved surface light out part at planar light extracting portion edge, the curved surface light out part smoothly extends to the side of lens from the edge in planar light extracting portion along arc direction；The lens further include the incident optical cavity set on lens bottom, the incidence optical cavity includes the first incidence surface being set at the top of optical cavity, it is smoothly connected in the first incidence surface edge and the second incidence surface for extending along optical cavity side, and the third incidence surface being connect with the first incidence surface and the second incidence surface；Second incidence surface is located at the side of corresponding curved surface light out part.The lens of the present invention are used to form lateral Uniform Illumination after carrying out light distribution to LED light source, and such as sidebar lamp, light distribution effect is good.
Description
Technical field
The invention belongs to technical field of LED illumination, and in particular to a kind of lateral optical lens of LED.
Background technology
LED light source can enhance the service efficiency and luminous efficiency of light together by being closely connected with LED lens, and can be with
Change the optical field distribution of LED according to the different lens of different effect selections.Traditional lens generally comprise light-focusing type and hair
The lens for dissipating property, with the continuous subdivision of application field, have gradually appeared and have had respectively with the diversification to LED light distribution requirements
The special-shaped lens of kind light distribution effect.
In the prior art, the street lamp uphang is generally adopted by for road lighting, but installation street lamp is cumbersome, cost
Greatly, road pavement transformation is big, difficulty of construction height etc., and not all occasion is suitable for installation street lamp.It is logical in some occasions
It crosses and installs what the lamps and lanterns of illumination were illuminated in the sidebar in roadside, but this mode comes with some shortcomings, for example be easy to driving
The person of sailing generates dazzling dazzle, and there are larger security risks.
Invention content
It is an object of the invention to solve problems of the prior art, design is a kind of to carry out laterally LED light source
The lateral optical lens of uniform light distribution.
The technical solution adopted to achieve the purpose of the present invention is：A kind of lateral optical lens of LED, the lens include setting
Planar light extracting portion in top surface, and be connected to the curved surface light out part at planar light extracting portion edge, the curved surface light out part is from plane
The edge of light out part smoothly extends to the side of lens along arc direction；The lens further include the incident light set on lens bottom
Chamber, the incidence optical cavity includes the first incidence surface being set at the top of optical cavity, is smoothly connected in the first incidence surface edge and along optical cavity
The second incidence surface that side extends, and the third incidence surface that is connect with the first incidence surface and the second incidence surface；Described second enters
Smooth surface is located at the side of corresponding curved surface light out part.
Preferably, first incidence surface is formed as the curved surface of optical cavity top down protrusion, and the second incidence surface is formed as round
The medial surface of ring body, the first incidence surface and the second incidence surface seamlessly transitting in junction.
Preferably, the one of laterally closer second incidence surface of certainly separate second incidence surface of the height of first incidence surface
Side continuously decreases；The third incidence surface is the song extended to lens bottom with the edge of the first incidence surface and the second incidence surface
Face.
Preferably, first incidence surface is formed as 1/2 ellipsoid hat curved surface, which is preced with curved surface by passing through axis
Plane cutting ellipsoid hat curved surface form.
Preferably, the 1/2 ellipsoid hat curved surface is smoothly connected at section with second incidence surface.
Preferably, the curved surface light out part extends from the edge in planar light extracting portion to the side of lens along camber line, the arc
The direction that line edge extends includes successively in the order of connection：Ascent stage, the height of ascent stage are gradually higher by the surface in planar light extracting portion
Top；The height of descending branch, descending branch is gradually decrease to the lower face in planar light extracting portion, and extends to the farthest of lens side
End；The height of exhausting section, exhausting section continuously decreases, and proximally extends from the distal end of lens side.
Preferably, width of the curved surface light out part between extending direction both sides, gradually increases along ascent stage and descending branch
Greatly, it is gradually reduced along exhausting section.
Preferably, the planar light extracting portion is formed as semicircular surface, and the curved surface light out part is connected to the straight flange of semicircle
Side；The straight flange of the semicircle is located at the vertical direction of first incidence surface and the second incidence surface junction.
Preferably, the round edge of the semicircle in the planar light extracting portion between the bottom edge of lens along arc raised outward
Shape extends.
Preferably, the bottom surface of the lens includes positioned at the first bottom surface of the first incidence surface side and positioned at the second incidence surface
Second bottom surface of side；First bottom surface is semicircle, and second bottom surface is sector, and fan-shaped width is along far from the first bottom
The direction in face becomes larger.
Preferably, the curved surface light out part extends to the bottom surface of lens, the sides of the lens be formed in planar light extracting portion,
Between curved surface light out part and the edge of lens base, from whole tables that lens profile can be observed backwards to the side of curved surface light out part
Face.
Preferably, second incidence surface extends to the bottom surface of lens, and the center of circle of the torus is located at lens base institute
Planar；Maximum distance of the lens base backwards to side and the torus center of circle of the second incidence surface is equal to described the
The minimum distance of two incidence surfaces and the torus center of circle.
Preferably, the angle that the line in the upper and lower ends of the second incidence surface and the torus center of circle is formed is 90 °
The present invention has the following advantages compared with the existing technology：
On the one hand the light of LED can be formed the luminous shape of a bar shaped by the lens of the present invention, while can also will
Light is irradiated to a direction.When being used for illuminating road in sidebar, this structure can either project light very
Remote distance, and light can be projected to vehicle forward direction without shining directly on vehicle, avoid dazzle.
Description of the drawings
Fig. 1 is the stereochemical structure perspective view of the lateral optical lens of the embodiment of the present invention
Fig. 2 is the sectional view in the directions Q-Q in Fig. 1
Fig. 3 is the side view of the lateral optical lens of the embodiment of the present invention
Fig. 4 is the sectional view in the directions P-P in Fig. 1
Fig. 5 is the vertical view of the lateral optical lens of the embodiment of the present invention
Fig. 6 is the stereoscopic grid view of the incidence surface of the lateral optical lens of the embodiment of the present invention
Fig. 7 is the rearview of the lateral optical lens of the embodiment of the present invention
Fig. 8 is the three-dimensional view of the lateral optical lens of the embodiment of the present invention
Fig. 9 is the sectional view in the directions U-U in Fig. 8
Figure 10 is the network view of the incident optical cavity of the lateral optical lens of the embodiment of the present invention
Figure 11 is the light path of light figure of the lateral optical lens of the embodiment of the present invention
Figure 12 is index path of the lateral optical lens of the embodiment of the present invention along rear direction
Figure 13 is lighting effect figure when single lens of the embodiment of the present invention use (lens are laterally located, and are dipped down 5 degree)
Figure 14 is light distribution curve when single lens of the embodiment of the present invention use
Figure 15 is lighting effect figure when the multiple lens arrangements of the embodiment of the present invention use
Specific implementation mode
The specific implementation mode of the present invention is described further below in conjunction with the accompanying drawings：
As shown in Fig. 1 to 10, the lateral optical lens of a kind of LED of the present embodiment comprising one is set on lens base 40
Incident optical cavity 7, the planar light extracting portion 20 above incident optical cavity and the curved surface light out part 30 set on incident optical cavity side, plane
Light out part 20 and curved surface light out part 30 are seamlessly transitted in junction, constitute the light-emitting surface of lens；The inner surface of incident optical cavity 7 is formed
For the incidence surface 10 of this lens, including the first incidence surface 102, the second incidence surface 101, third incidence surface 103.
Fig. 1 is that the stereochemical structure perspective view of the present embodiment lens goes out where it can be seen that incidence surface 10 is located at lens interior
Smooth surface extends to lens base from the top of lens to side.Incidence surface and light-emitting surface correspond.
Fig. 2 is the Q-Q sectional views of Fig. 1, can be seen that incident optical cavity 7 from 40 upwardly recessed lens body of lens base in figure
Inside when installation, can cover in LED light source in incident optical cavity 7, incidence surface 10 follows light-emitting surface to extend.
Shown in Fig. 3, Fig. 4 and Fig. 9, Fig. 3 is the side view of the present embodiment, and Fig. 4 is the P-P sectional views of Fig. 1, and Fig. 9 is Fig. 8's
U-U sectional views；This lens is cutd open perpendicular to planar light extracting portion 20 in junction in planar light extracting portion 20 and curved surface light out part 30
It cuts, the side of corresponding flat light out part 20 is the first lens body 1-1, and the side of corresponding curved surface light out part 30 is the second lens master
Body 1-2.
Incidence surface on the first lens body 1-1 is the first incidence surface 102, and the first incidence surface 102 is formed as 1/2
Ellipsoid is preced with curved surface, and the plane cutting ellipsoid hat curved surface that 1/2 ellipsoid hat curved surface is formed to pass axis forms, the first incidence surface
102 sections intercepted by the vertical plane Jing Guo minimum point are formed as upward parabolical half.
As seen from Figure 4, the bottom surface for being located at the incident optical cavity on the first lens body 1-1 is semicircle shape, and its side wall
Horizontal cross-section is in semicircle shape, and radius r is gradually reduced from bottom to top.
The horizontal cross-section of first incidence surface 102 is also in semicircle shape, and radius R gradually increases from bottom to top.
The center of circle O ' and center of circle D ' is located in upper and lower corresponding vertical direction.
The planar light extracting portion 20 is also in semicircle shape, and the center of circle is corresponding with the center of circle O ' and center of circle D '.
The bottom surface of the first lens body 1-1 is also in semicircle shape, and the center of circle is corresponding with the center of circle O ' and center of circle D '.
The horizontal cross-section of the side 50 of the first lens body 1-1 is also in semicircle shape, and radius is gradual from bottom to top
Increase.
The side 50 of the first lens body 1-1 is formed as from its bottom edge to the smooth of 20 edge of planar light extracting portion
Transition, and in this embodiment, side 50 is with arc transition, as shown in figure 3, the dotted line f is the first lens body bottom edge
To the straight line at 20 edge of planar light extracting portion, the side 50 is outwardly protruded in dotted line f, and the maximum height of protrusion is k；In addition, empty
Line f is to tilt outward from bottom to top.
As shown in figure 3, the friendship of the empty separated time and bottom surface horizontal line between the first lens body 1-1 and the second lens body 1-2
Contact O is the center of circle, and the minimum point C of the first incidence surface 102, the left side farthest point A of bottom surface 40, the second incidence surface 101 are located at bottom surface
Left side farthest point B on 40, point C, point A and point B are on circle O.
The plane of incidence being located on the second lens body 1-2 is second plane of incidence 101, first plane of incidence 102 and second
The plane of incidence 101 is seamlessly transitted in junction.Second plane of incidence 101 from the half-circular cutouts edge of first plane of incidence 102 to
Side extends to the bottom surface 40 of lens.
As shown in figs. 6 and 10, second plane of incidence 101 is formed as the medial surface of 1/4 sector region of torus, and
The section of its ring is ellipse, also can be circle in other embodiments.Ring hearts of the point O as the torus.
Again as shown in figure 3, the section for being parallel to paper of second plane of incidence 101 is 1/4 circle, partly without leave it is intermediate to
Both ends become larger；Second plane of incidence 101 is parabola shaped perpendicular to paper and by the section of center of circle O, and is respectively cutd open
Face it is parabola shaped consistent, and unanimously with the place of being smoothly connected of first plane of incidence 102.
It can also be seen that curved surface light out part 30 is seamlessly transitted with 20 junction of planar light extracting portion in Fig. 3, apparent height
It gradually rises up to after being higher by planar light extracting portion distance h, then is bent gradually downward to bottom surface 40,30 surface edge of curved surface light out part before this
The tangent line of vertical direction is d at a distance from bottom surface 40.
As shown in figure 5, the width of 30 both sides of the edge of curved surface light out part is more than planar light extracting portion 20, change width is first
Be minimum in the junction with planar light extracting portion edge, seamlessly transit, then width, which becomes larger, reaches maximum value, later again by
Gradual change is small, and is finally connect with bottom surface 40；At its width maximum value, it is located at the edge pair of bottom surface 40 and the connection of curved surface light out part 30
At the surface answered；As shown in figure 5, distance n is the difference of the maximum width and flat luminous portion of side.
Shown in Fig. 6, the stereoscopic grid view of the first incidence surface 102 and the second incidence surface 101 is shown, it is seen that it includes
One incidence surface 102, the ellipsoid that the first incidence surface 102 is 1/2 are preced with curved surface, including the second incidence surface 101, the second incidence surface 101 are
The medial surface of torus in 1/4 fan section.First incidence surface 102 and the second incidence surface 101 are matched smooth in junction
Transition.
Fig. 7 is the rearview of the present embodiment lens, from this view, it can be seen that side 60 is not obstructed the view by side 50,
It can be seen that width of the side 60 of its second lens body 1-2 along both sides is greater than the side 50 of the first lens body 1-1.
Fig. 8 is the three-dimensional view of the present embodiment, and Fig. 9 is the U-U sectional views of Fig. 8, is also flat between side 50 and side 60
It slips over and crosses.
Figure 10 shows the spatial lattice structure view of the incident optical cavity 7 of the present embodiment lens, can be seen that third enters in figure
Smooth surface 103 extends downward into lens bottom along the edge of the first incidence surface 102 and the second incidence surface 101, in the incident light of lens
In chamber 7, third incidence surface 103 has that there are one open subtle angles of inclination outward from top to bottom.
Figure 11 and Figure 12 show the refraction of light path figure of the present embodiment lens interior, it is seen that light is in plane
Light out part is vertical exit, and in curved surface light out part as far from planar light extracting portion, the deflection angle of light is bigger, it realizes partially
The characteristics of light irradiates.When the lens of the present embodiment, which are mounted on, is used for illuminating road in the sidebar of road, this structure can either
Light is projected to far distance in front of lens, and light can be projected along vehicle forward direction, thus will not be direct
It is irradiated on vehicle, avoids dazzle.
Figure 13 is the lighting effect figure of the lamps and lanterns comprising single lens；Figure 14 is the light distribution curve of single lens；Figure 15
Lighting effect figure under being used in conjunction with for multiple lens.
It is the preferred embodiment of the present embodiment above, however not excluded that those skilled in the art are on the basis of the present embodiment to it
Make some changes, such as increases some raised or recessed fixing device etc., these designs on bottom surface and cause bottom shape
Variation, but these variations still rely on the core scheme of the present embodiment, do not influence the present invention and are defined to its protection domain.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is changed.Therefore, the invention is not limited in specific implementation modes disclosed and described above, to the present invention's
Some modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, although being used in this specification
Some specific terms, these terms are merely for convenience of description, does not limit the present invention in any way.
Claims (10)
1. a kind of lateral optical lens of LED, the lens include being set to the planar light extracting portion of top surface, and be connected to planar light extracting portion
The curved surface light out part at edge, the curved surface light out part smoothly extend to the one of lens along arc direction from the edge in planar light extracting portion
Side；The lens further include the incident optical cavity set on lens bottom, and the incidence optical cavity includes that first be set at the top of optical cavity enters
Smooth surface, which is characterized in that be smoothly connected in the first incidence surface edge and the second incidence surface for extending along optical cavity side, and with
The third incidence surface of one incidence surface and the connection of the second incidence surface；Second incidence surface is located at the side of corresponding curved surface light out part.
2. the lateral optical lens of LED according to claim 1, which is characterized in that first incidence surface is formed as optical cavity top
The downwardly convex curved surface in portion, the second incidence surface are formed as the medial surface of torus, and the first incidence surface and the second incidence surface are in connection
Place seamlessly transits.
3. the lateral optical lens of LED according to claim 2, which is characterized in that the height of first incidence surface is from separate
The side of one laterally closer second incidence surface of the second incidence surface continuously decreases；The third incidence surface be with the first incidence surface and
The curved surface that the edge of second incidence surface extends to lens bottom.
4. the lateral optical lens of LED according to claim 1, which is characterized in that the curved surface light out part is from planar light extracting portion
Edge extend to the side of lens along camber line, the camber line includes successively in the order of connection along the direction extended：
Ascent stage, the height of ascent stage are gradually higher by the surface in planar light extracting portion；
The height of descending branch, descending branch is gradually decrease to the lower face in planar light extracting portion, and extends to the farthest of lens side
End；
The height of exhausting section, exhausting section continuously decreases, and proximally extends from the distal end of lens side.
5. the lateral optical lens of LED according to claim 4, which is characterized in that the curved surface light out part is along extending direction two
Width between side gradually increases along ascent stage and descending branch, is gradually reduced along exhausting section.
6. the lateral optical lens of LED according to claim 1, which is characterized in that the planar light extracting portion is formed as semicircle
Surface, the curved surface light out part are connected to the straight flange side of semicircle；The straight flange of the semicircle is located at first incidence surface and
The vertical direction of two incidence surface junctions.
7. the lateral optical lens of LED according to claim 6, which is characterized in that the round edge of the semicircle in the planar light extracting portion
Extend between the bottom edge of lens along arc raised outward.
8. the lateral optical lens of LED according to claim 1, which is characterized in that the bottom surface of the lens includes being located at first
First bottom surface of incidence surface side and the second bottom surface positioned at the second incidence surface side；First bottom surface is semicircle, described
Second bottom surface is sector, and fan-shaped width becomes larger along the direction far from the first bottom surface.
9. the lateral optical lens of LED according to claim 1, which is characterized in that the curved surface light out part extends to lens
The side of bottom surface, the lens is formed between planar light extracting portion, curved surface light out part and the edge of lens base, from backwards to curved surface
The all surfaces of lens profile can be observed in the side of light out part.
10. the lateral optical lens of LED according to claim 2, which is characterized in that second incidence surface extends to lens
The center of circle of bottom surface, the torus is located at lens base institute planar；The lens base is backwards to the side of the second incidence surface
It is equal to the minimum distance of second incidence surface and the torus center of circle with the maximum distance in the torus center of circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511035096.6A CN105546477B (en) | 2015-02-16 | 2015-12-31 | A kind of lateral optical lens of LED |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015100854463 | 2015-02-16 | ||
| CN201510085446 | 2015-02-16 | ||
| CN201511035096.6A CN105546477B (en) | 2015-02-16 | 2015-12-31 | A kind of lateral optical lens of LED |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105546477A CN105546477A (en) | 2016-05-04 |
| CN105546477B true CN105546477B (en) | 2018-11-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511035096.6A Expired - Fee Related CN105546477B (en) | 2015-02-16 | 2015-12-31 | A kind of lateral optical lens of LED |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105546477B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141229A (en) * | 2010-12-15 | 2011-08-03 | 上海三思电子工程有限公司 | Method for designing lens |
| CN102162624A (en) * | 2011-04-08 | 2011-08-24 | 佛山市中山大学研究院 | Lens |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009021182A1 (en) * | 2009-05-13 | 2010-11-18 | Hella Kgaa Hueck & Co. | Lighting device for roads |
| CN101968166B (en) * | 2009-07-27 | 2013-09-25 | 富准精密工业(深圳)有限公司 | Light emitting diode module |
| US20110063856A1 (en) * | 2009-08-12 | 2011-03-17 | Novatac, Inc. | Flashlight lens assembly adapted for beam optimization |
-
2015
- 2015-12-31 CN CN201511035096.6A patent/CN105546477B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141229A (en) * | 2010-12-15 | 2011-08-03 | 上海三思电子工程有限公司 | Method for designing lens |
| CN102162624A (en) * | 2011-04-08 | 2011-08-24 | 佛山市中山大学研究院 | Lens |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105546477A (en) | 2016-05-04 |
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Granted publication date: 20181102 Termination date: 20191231 |