CN204629356U - LED light-distribution lens - Google Patents
LED light-distribution lens Download PDFInfo
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- CN204629356U CN204629356U CN201520127194.1U CN201520127194U CN204629356U CN 204629356 U CN204629356 U CN 204629356U CN 201520127194 U CN201520127194 U CN 201520127194U CN 204629356 U CN204629356 U CN 204629356U
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Abstract
The utility model discloses a kind of LED light-distribution lens, lens are semicylinder, this semicylinder comprises semicircle cambered surface, section and both ends of the surface, the recess placing light source is provided with in the middle part of the section of semicylinder, this recess is surrounded by the first side wall, the second sidewall and lower arcuate surface and forms, and wherein the first side wall and the second sidewall are oppositely arranged; One end face of semicylinder is the first end face and is the outer convex globoidal of divergent contour, and the starting point of this first end face near the middle part of the first side wall, and is shaped by the periphery circular arc diffusion of this starting point to semicylinder; The light of light source directive the first side wall is the first light, first light refracts to the first end face of semicylinder through the first side wall, semicircle cambered surface is reflexed to again through the outer convex globoidal of divergent contour, and from the injection of semicircle cambered surface, and the angle that this first light penetrates from semicircle cambered surface is less than its initial angle.The utility model provides a kind of LED light-distribution lens, presents the hot spot that length is greater than width, to be applicable to the illumination of long and narrow occasion by this light-distribution lens.
Description
Technical field
The utility model relates to lens technologies field, particularly relates to LED light-distribution lens.
Background technology
The light that LED light source is launched is scattering state, needs to carry out optically focused by light-distribution lens.Current light-distribution lens common feature is: the hot spot presented by light-distribution lens is circular light spot.But circular light spot can not be applicable to some special occasions well, occasion as long and narrow in road, tunnel, shelf interval etc. is irradiated, due to the range of exposures sub-circular of circular light spot, when the diameter of circular light spot equals the width of long and narrow occasion, there is the problem that irradiation distance is short, need multiple light source of arranging, and when circular light spot be directly greater than the width of long and narrow occasion time, some light will be irradiated to outside long and narrow occasion, there is the problem of ray waste.
Utility model content
Main purpose of the present utility model is to provide a kind of LED light-distribution lens, presents the hot spot that length is greater than width, to be applicable to the illumination of long and narrow occasion by this light-distribution lens.
For achieving the above object, the utility model provides a kind of LED light-distribution lens, described lens are semicylinder, this semicylinder comprises semicircle cambered surface, section and both ends of the surface, the recess placing light source is provided with in the middle part of the section of described semicylinder, this recess is surrounded by the first side wall, the second sidewall and lower arcuate surface and forms, and wherein said the first side wall and the second sidewall are oppositely arranged; One end face of described semicylinder is the first end face and is the outer convex globoidal of divergent contour, and the starting point of this first end face near the middle part of described the first side wall, and is shaped by the periphery circular arc diffusion of this starting point to described semicylinder; Described in described light source directive, the light of the first side wall is the first light, described first light refracts to the first end face of semicylinder through described the first side wall, described semicircle cambered surface is reflexed to again through the outer convex globoidal of described divergent contour, and from described semicircle cambered surface injection, and the angle that this first light penetrates from described semicircle cambered surface is less than its initial angle.
Preferably, the other end of described semicylinder is the second end face and is also the outer convex globoidal of divergent contour, and the starting point of this second end face near the middle part of described second sidewall, and is shaped by the periphery circular arc diffusion of this starting point to described semicylinder; Described in described light source directive, the light of the second sidewall is the second light, described second light refracts to the second end face through described second sidewall, again through this second end face reflection extremely described semicircle cambered surface, and from described semicircle cambered surface injection, the angle that this second light penetrates from described semicircle cambered surface is less than its initial angle.
Preferably, the sphere of to be the second end face be in the other end of described semicylinder evagination, described second sidewall is arranged near the second end face described in this, and the sphere also in evagination.
Preferably, described first light is after the outer convex globoidal reflection of described divergent contour, and described first light is perpendicular to described semicircle cambered surface.
Preferably, described lower arcuate surface is outer convex globoidal; The light of lower arcuate surface described in described light source directive is the 3rd light, described 3rd light refracts to described semicircle cambered surface through described lower arcuate surface, and from described semicircle cambered surface injection, and the angle that the 3rd light penetrates from described semicircle cambered surface is less than or equal to its initial angle.
Preferably, described 3rd light is after described lower arcuate surface refraction, and described 3rd light is perpendicular to described semicircle cambered surface.
Preferably, described lens are made up of any one material in glass, Merlon, polymethyl methacrylate.
Preferably, parallel and be section plane through the plane of described cylindrical central axis, described in any section plane cutting, lens all obtain identical profile graphics;
Described profile graphics comprises the first end face and forms line, the first side wall formation line, lower arcuate surface formation line and semicircular arc face formation line, wherein, described first end face forms line set and forms the first end face, described the first side wall forms line set and forms the first side wall, described lower arcuate surface forms line set and forms described lower arcuate surface, and described semicircular arc face forms line set and forms semicircular arc face.
Preferably, described profile graphics sets up plane right-angle coordinate, described cylindrical central axis is X-axis, and the straight line perpendicular to X-axis and through the central point of light source is Y-axis, then,
The intersection point that described the first side wall forms line and X-axis is (a
0, 0), the angle of itself and X-axis is b, then the first side wall forms the point on line is (x
n, y
n), and meet expression equation: y
n=tan (b) * (x
n-a
0);
The shooting angle of described first light is c
n, the refractive index of described lens is N', and the incident angle that described first light forms line at described the first side wall is c
n-90-b, after refraction, the angle of described first light and X-axis is d
n, the refraction angle of described first light is d
n-90+b, and meet expression equation: sin (c
n-90-b)=sin (d
n-90+b) * N';
Described first light is vertical with described semicircle cambered surface after the first end face through described the first side wall, and the intersection point that described first light and described first end face form line is (x'
n, y'
n), the tangential direction of this intersection point and the angle of X-axis are f
n, and f
n=(90+d
n)/2,
Wherein, tan (d
n)=-(y'
n-y
n)/(x'
n-x
n).
Preferably, the light of lower arcuate surface described in described light source directive is the 3rd light, described 3rd light after described lower arcuate surface perpendicular to described semicircle cambered surface;
The intersection point that described 3rd light and described lower arcuate surface form line is (x
m, y
m), the tangential direction of this intersection point and the angle of X-axis are h
m, the shooting angle of described 3rd light is g
m, described lower arcuate surface forms line and meets expression equation:
sin(90+h
m-g
m)＝sin(h
m)*N'；
tan(g
m)＝-y
m/x
m。
Beneficial effect achieved by the utility model: due to structural design of the present utility model, change the first light and the light direction of the 3rd light on described central shaft axial direction, also the width of hot spot is namely reduced by this lens arrangement, but do not reduce the length of hot spot, the length of hot spot is made to be greater than its width, light can be effective to the illumination of long and narrow occasion bearing of trend, and the light reduced perpendicular to long and narrow occasion direction, it also avoid light to be irradiated to and outside long and narrow occasion, to cause waste and light pollution, and improve the illumination intensity of long and narrow occasion.
Accompanying drawing explanation
Fig. 1 is the perspective view under the utility model LED light-distribution lens one embodiment first visual angle;
Fig. 2 is the perspective view under the utility model LED light-distribution lens one embodiment second visual angle;
Fig. 3 is the top view of the utility model LED light-distribution lens one embodiment;
Fig. 4 is the upward view of the utility model LED light-distribution lens one embodiment;
Fig. 5 is AA ' sectional view in Fig. 4;
Fig. 6 is BB ' sectional view in Fig. 4;
Fig. 7 is the profile graphics of the utility model LED light-distribution lens one embodiment;
Fig. 8 is the light path schematic diagram that in Fig. 4, BB ' analyses and observe;
Fig. 9 is the light path schematic diagram that in Fig. 4, AA ' analyses and observe;
Optical path analysis schematic diagram is penetrated at the beginning of first light of Figure 10 for the utility model LED light-distribution lens one embodiment;
Figure 11 is the first light refraction optical path analysis schematic diagram of the utility model LED light-distribution lens one embodiment;
Figure 12 is the first light reflection optical path analysis schematic diagram of the utility model LED light-distribution lens one embodiment;
Figure 13 is that the 3rd light path of light of the utility model LED light-distribution lens one embodiment analyzes schematic diagram;
Figure 14 is the hot spot that the utility model LED light-distribution lens one embodiment is formed;
Figure 15 is the perspective view under another embodiment first visual angle of the utility model LED light-distribution lens;
Figure 16 is the perspective view under another embodiment second visual angle of the utility model LED light-distribution lens;
Figure 17 is the top view of another embodiment of the utility model LED light-distribution lens;
Figure 18 is the upward view of another embodiment of the utility model LED light-distribution lens;
Figure 19 is AA ' sectional view in Figure 18;
Figure 20 is BB ' sectional view in Figure 18;
Figure 21 is the profile graphics of another embodiment of the utility model LED light-distribution lens;
Figure 22 is the hot spot that another embodiment of the utility model LED light-distribution lens is formed.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model also provides a kind of LED light-distribution lens, as shown in Figures 1 to 6, lens are semicylinder 10, this semicylinder 10 comprises semicircle cambered surface 2, section 3 and both ends of the surface, the recess 8 placing light source 9 is provided with in the middle part of the section 3 of semicylinder 10, this recess 8 is surrounded by the first side wall 4, second sidewall 6 and lower arcuate surface 5 and forms, and wherein the first side wall 4 and the second sidewall 6 are oppositely arranged; One end face of semicylinder 10 is the first end face 1 and is the outer convex globoidal of divergent contour, and the starting point of this first end face 1 near the middle part of the first side wall 4, and is shaped by the periphery circular arc diffusion of this starting point to semicylinder 10; The light of light source 9 directive the first side wall 4 is the first light, first light refracts to the first end face 1 of semicylinder 10 through the first side wall 4, semicircle cambered surface 2 is reflexed to again through the outer convex globoidal of divergent contour, and penetrate from semicircle cambered surface 2, and the angle that this first light penetrates from semicircle cambered surface 2 is less than its initial angle.
Due to structural design of the present utility model, limit the lighting angle of the first light of directive the first side wall 4, make the length of scioptics formation hot spot different with width, to be applicable to the illumination of long and narrow occasion, that is to say the light reduced perpendicular to long and narrow occasion direction, avoid light to be irradiated to and outside long and narrow occasion, to cause waste and light pollution, and improve the illumination intensity of long and narrow occasion.
Further, continue see shown in Fig. 1 to Fig. 6, the other end of semicylinder 10 is the second end face 7 and is also the outer convex globoidal of divergent contour, and the starting point of this second end face 7 near the middle part of the second sidewall 6, and is shaped by the periphery circular arc diffusion of this starting point to semicylinder 10; The light of light source 9 directive second sidewall 6 is the second light, second light refracts to the second end face 7 through the second sidewall 6, reflex to semicircle cambered surface 2 through this second end face 7 again, and penetrate from semicircle cambered surface 2, the angle that this second light penetrates from semicircle cambered surface 2 is less than or equal to its initial angle; Lower arcuate surface 5 is in outer convex globoidal; The light of light source 9 directive lower arcuate surface 5 is the 3rd light, and the 3rd light refracts to semicircle cambered surface 2 through lower arcuate surface 5, and penetrates from semicircle cambered surface 2, and the angle that the 3rd light penetrates from semicircle cambered surface 2 is less than or equal to its initial angle.The lighting angle of the second light and the 3rd light, scioptics are made to form strip hot spot, further minimizing, perpendicular to the light in long and narrow occasion direction, avoids light and is irradiated to and causes waste and light pollution outside long and narrow occasion, and improve the illumination intensity of long and narrow occasion.
As shown in Figure 7, parallel and be section plane 3 through the plane of cylindrical central axis, any section plane 3 cutting lens all obtain identical profile graphics 20.Profile graphics 20 comprises the first end face and forms line 11, the first side wall formation line 41, lower arcuate surface formation line 51 and semicircle cambered surface formation line 21, wherein, first end face forms line 11 and gathers formation first end face 1, the first side wall forms line 41 and gathers formation the first side wall 4, lower arcuate surface forms line 51 and gathers formation lower arcuate surface 5, and semicircular arc face forms line 21 set and forms semicircular arc face 2.
It will be appreciated by those skilled in the art that the hot spot through lens forming has length and width.In the utility model, width is central axial direction.As shown in Figure 8, change the first light, the second light and the light direction of the 3rd light on central shaft axial direction, also the width of hot spot is namely reduced by this lens arrangement, but do not reduce the length of hot spot, as shown in Figure 9, make the length of hot spot be greater than its width, reduce the light perpendicular to long and narrow occasion direction, avoid light to be irradiated to and outside long and narrow occasion, to cause waste and light pollution, and improve the illumination intensity of long and narrow occasion.
The preferred implementation of one as the present embodiment, first light penetrates from semicircle cambered surface 22 after the first side wall 4 and the first end face 1, and the first light is perpendicular to semicircle cambered surface 2, this first side wall forms line 41 and the first end face formation line 11 specifically can design like this.
As shown in Figure 10, set up plane right-angle coordinate at profile graphics 20, X-axis is cylindrical central axis, and the straight line perpendicular to X-axis and through the central point of light source 9 is Y-axis, and the starting point that the first side wall forms line 41 is (a
0, 0), the angle of itself and X-axis is b, a
0size according to LED decides, and for known, b value is 0-90 degree, and wherein, 80-85 degree is preferable range value.
The shooting angle of the first light is subdivided into N decile, and get two light adjacent in the first light, the first light n, the first light n+1, the shooting angle of two the first light is respectively c
n, c
n+ 1, and be designated as (x respectively with the intersection point that the first side wall forms line 41
n, y
n) (x
n+1, y
n+1), then can obtain equation:
y
n＝tan(b)*(x
n-a
0)
y
n+1＝tan(b)*(x
n+1-a
0)
y
n＝tan(c
n)*x
n
y
n+1＝tan(c
n+1)*x
n+1
With above-mentioned four equations, x can be solved
n, y
n, x
n+1, y
n+1.Get when determining N value, x can be solved to obtain
1, x
2, x
3, x
4x
n, x
n+1x
n, and y
1, y
2, y
3, y
4y
n, y
n+1y
n, thus show that the first end face forms line 11.
As shown in figure 11, first light reflects at the first side wall 4, different according to the material of selection lens, can to be chosen as in glass, Merlon, polymethyl methacrylate any one, if the refractive index of lens is N' in the present embodiment, then the incident angle that the first light forms line 41 at the first side wall is respectively c
n-90-b, c
n+1-90-b, refraction angle is respectively d
n-90+b, d
n+1-90+b, meets the law of refraction at this, can obtain:
Equation 2:sin (c
n-90-b)=sin (d
n-90+b) * N'
Equation 3:sin (c
n+1-90-b)=sin (d
n+1-90+b) * N'
D can be solved
1, d
2, d
3, d
4d
n, d
n+1d
n.
As is illustrated by figs. 11 and 12, there is mirror-reflection at the first end face 1 in the first light, and the first light is parallel with Y-axis through reflection, and according to reflection law, incidence angle equals angle of reflection, if the intersection point that the first light and the first end face form line 11 is (x' respectively
n, y'
n) (x'
n+1, y'
n+1), the line between 2 and the angle of X-axis are f
n, and this angle f
nfor intersection point (x'
n+1, y'
n+1) tangential direction and the angle that formed of X-axis, angle of reflection and f
nequal, incidence angle is 90-f
n+ d
n, can obtain:
Equation 4:(f
n+1)=-(y'
n+1-y'
n)/(x'
n+1-x'
n)
Equation 5:f
n+1=90-f
n+1+ d
n
Owing to solving d
1, d
2, d
3, d
4d
n, d
n+1d
n, can f be solved
1f
2, f
3, f
4f
n, f
n+1f
n.
Can obtain from the geometrical relationship Figure 12:
Equation 6:tan (d
n+1)=-(y'
n+1-y
n+1)/(x'
n+1-x
n+1)
Simultaneous equations 5,6 can obtain:
tan(f
n+1)＝-(y'
n+1-y'
n)/(x'
n+1-x'
n)
tan(d
n+1)＝-(y'
n+1-y
n+1)/(x'
n+1-x
n+1)
Continue shown in Figure 12, it is (b that the first end face forms line 11 starting point
0, 0), b
0for being less than a
0, b
0for known, substituting in above-mentioned equation group, the value namely during n=0, is x '
n=x '
0=b
0y '
n=y '
0=b
0, then x ' can be solved
1, y '
1
Value x' during n=1
1, y'
1for solving, x' can be solved
2, y'
2value
Value x' during n=2
2, y'
2for solving, x' can be solved
3, y'
3value
By that analogy, can solve
x'
1、x'
2、x'
3、x'
4…………x'
n、x'
n+1…………x'
N
y'
1、y'
2、y'
3、y'
4…………y'
n、y'
n+1…………y'
N
The point calculated is simulated smooth curve, namely show that the first end face forms line 11.
The preferred implementation of one as the present embodiment, as shown in figure 13,3rd light after lower arcuate surface 5 from semicircle cambered surface 2, and the 3rd light is perpendicular to semicircle cambered surface 2, this lower arcuate surface forms line 51 and specifically can design like this, as shown in figure 13, the exiting angle range of the 3rd light is subdivided into M decile, get two articles of adjacent the 3rd light, be respectively m and m+1, the angle of emergence of two article of the 3rd light is respectively g
mand g
m+1, the intersection point that these two light and lower arcuate surface form line 51 is respectively (x
m, y
m) (x
m+1, y
m+1), the angle of 2 lines is h
m+1, this angle is intersection point (x
m+1, y
m+1) tangential direction, and at (x
m+1, y
m+1) point meet the law of refraction, according to the above-mentioned lens material selected, refractive index is N', can list equation group:
tan(h
m+1)＝-(y
m+1-y
m)/(x
m+1-x
m)
sin(90+h
m+1-g
m+1)＝sin(h
m+1)*N’
tan(g
m+1)＝-y
m+1/x
m+1
Lower arcuate surface formed the starting point of line 51 be before (the x that solved
n, y
n), the value namely during m=0 is xm=x
m0=x
nym=y
m0=y
n, then x can be solved
m1, y
m1
Value x during n=1
m1, y
m1for solving, x can be solved
m2, y
m2value
Value x during n=2
m2, y
m2for solving, x can be solved
m3, y
m3value
By that analogy, can solve
X
m1、x
m2、x
m3、x
m4…………x
mn、x
m+1…………x
M，
Y
m1、y
m2、y
m3、y
m4…………y
m、y
m+1…………y
M
The point calculated is fitted to smooth curve, namely show that lower arcuate surface forms line 51, curved line.
Figure 14 is the hot spot that said lens is formed.
As shown in Figure 15 to 21, it is another embodiment of the present utility model.
Wherein, Figure 15 is the perspective view under this embodiment first visual angle, Figure 16 is the perspective view under this embodiment second visual angle, Figure 17 is the top view of this embodiment, Figure 18 is the upward view of this embodiment, Figure 19 is AA ' sectional view in Figure 18, and Figure 20 is BB ' sectional view in Figure 18, and Figure 21 is the profile graphics 20 of another embodiment of the utility model lens.
Lens are semicylinder 10, this semicylinder 10 comprises semicircle cambered surface 2, section 3 and both ends of the surface, the recess 8 placing light source 9 is provided with in the middle part of the section 3 of semicylinder 10, this recess 8 is surrounded by the first side wall 4, second sidewall 6 and lower arcuate surface 5 and forms, and wherein the first side wall 4 and the second sidewall 6 are oppositely arranged; One end face of semicylinder 10 is the first end face 1 and is the outer convex globoidal of divergent contour, and the starting point of this first end face 1 near the middle part of the first side wall 4, and is shaped by the periphery circular arc diffusion of this starting point to semicylinder 10; The light of light source 9 directive the first side wall 4 is the first light, first light refracts to the first end face 1 of semicylinder 10 through the first side wall 4, semicircle cambered surface 2 is reflexed to again through the outer convex globoidal of divergent contour, and penetrate from semicircle cambered surface 2, and the angle that this first light penetrates from semicircle cambered surface 2 is less than or equal to its initial angle.And the other end of semicylinder 10 is the sphere of the second end face 7 in evagination, the second sidewall 6 is arranged near this second end face 7, and the sphere also in evagination.
This structural design similarly changes the first light and the 3rd light light direction in the direction of the width, also the width of hot spot is namely reduced by this lens arrangement, but do not reduce the length of hot spot, the length of hot spot is made to be greater than its width, namely be reduce the light perpendicular to long and narrow occasion direction, it also avoid light to be irradiated to and outside long and narrow occasion, to cause waste and light pollution, and improve the illumination intensity of long and narrow occasion.
As shown in figure 22, be the hot spot of this lens forming.
These are only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model description and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. a LED light-distribution lens, it is characterized in that, described lens are semicylinder, this semicylinder comprises semicircle cambered surface, section and both ends of the surface, the recess placing light source is provided with in the middle part of the section of described semicylinder, this recess is surrounded by the first side wall, the second sidewall and lower arcuate surface and forms, and wherein said the first side wall and the second sidewall are oppositely arranged; One end face of described semicylinder is the first end face and is the outer convex globoidal of divergent contour, and the starting point of this first end face near the middle part of described the first side wall, and is shaped by the periphery circular arc diffusion of this starting point to described semicylinder; Described in described light source directive, the light of the first side wall is the first light, described first light refracts to the first end face of semicylinder through described the first side wall, described semicircle cambered surface is reflexed to again through the outer convex globoidal of described divergent contour, and from described semicircle cambered surface injection, and the angle that this first light penetrates from described semicircle cambered surface is less than its initial angle.
2. LED light-distribution lens as claimed in claim 1, it is characterized in that, the other end of described semicylinder is the second end face and is also the outer convex globoidal of divergent contour, and the starting point of this second end face near the middle part of described second sidewall, and is shaped by the periphery circular arc diffusion of this starting point to described semicylinder; Described in described light source directive, the light of the second sidewall is the second light, described second light refracts to the second end face through described second sidewall, again through this second end face reflection extremely described semicircle cambered surface, and from described semicircle cambered surface injection, the angle that this second light penetrates from described semicircle cambered surface is less than its initial angle.
3. LED light-distribution lens as claimed in claim 1, is characterized in that, the sphere of to be the second end face be in the other end of described semicylinder evagination, described second sidewall is arranged near the second end face described in this, and is also the sphere of evagination.
4. LED light-distribution lens as claimed in claim 1, is characterized in that, described first light is after the outer convex globoidal reflection of described divergent contour, and described first light is perpendicular to described semicircle cambered surface.
5. LED light-distribution lens as claimed in claim 1, it is characterized in that, described lower arcuate surface is outer convex globoidal; The light of lower arcuate surface described in described light source directive is the 3rd light, described 3rd light refracts to described semicircle cambered surface through described lower arcuate surface, and from described semicircle cambered surface injection, and the angle that the 3rd light penetrates from described semicircle cambered surface is less than or equal to its initial angle.
6. LED light-distribution lens as claimed in claim 5, is characterized in that, described 3rd light is after described lower arcuate surface refraction, and described 3rd light is perpendicular to described semicircle cambered surface.
7. LED light-distribution lens as claimed in claim 1, it is characterized in that, described lens are made up of any one material in glass, Merlon, polymethyl methacrylate.
8. LED light-distribution lens as claimed in claim 1, is characterized in that, parallel and plane through described cylindrical central axis is section plane, and described in any section plane cutting, lens all obtain identical profile graphics;
Described profile graphics comprises the first end face and forms line, the first side wall formation line, lower arcuate surface formation line and semicircular arc face formation line, wherein, described first end face forms line set and forms the first end face, described the first side wall forms line set and forms the first side wall, described lower arcuate surface forms line set and forms described lower arcuate surface, and described semicircular arc face forms line set and forms semicircular arc face.
9. LED light-distribution lens as claimed in claim 8, it is characterized in that, described profile graphics sets up plane right-angle coordinate, described cylindrical central axis is X-axis, and the straight line perpendicular to X-axis and through the central point of light source is Y-axis, then,
The intersection point that described the first side wall forms line and X-axis is (a
0, 0), the angle of itself and X-axis is b, then the first side wall forms the point on line is (x
n, y
n), and meet expression equation: y
n=tan (b) * (x
n-a
0);
The shooting angle of described first light is c
n, the refractive index of described lens is N', and the incident angle that described first light forms line at described the first side wall is c
n-90-b, after refraction, the angle of described first light and X-axis is d
n, the refraction angle of described first light is d
n-90+b, and meet expression equation: sin (c
n-90-b)=sin (d
n-90+b) * N';
Described first light is vertical with described semicircle cambered surface after the first end face through described the first side wall, and the intersection point that described first light and described first end face form line is (x'
n, y'
n), the tangential direction of this intersection point and the angle of X-axis are f
n, and f
n=(90+d
n)/2,
Wherein, tan (d
n)=-(y'
n-y
n)/(x'
n-x
n).
10. LED light-distribution lens as claimed in claim 9, it is characterized in that, the light of lower arcuate surface described in described light source directive is the 3rd light, described 3rd light after described lower arcuate surface perpendicular to described semicircle cambered surface;
The intersection point that described 3rd light and described lower arcuate surface form line is (x
m, y
m), the tangential direction of this intersection point and the angle of X-axis are h
m, the shooting angle of described 3rd light is g
m, described lower arcuate surface forms line and meets expression equation:
sin(90+h
m-g
m)＝sin(h
m)*N'；
tan(g
m)＝-y
m/x
m。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276418A (en) * | 2015-11-18 | 2016-01-27 | 戴朝卿 | Line light spot optical lighting system based on cylindrical surface array |
| CN105387370A (en) * | 2015-11-17 | 2016-03-09 | 浙江农林大学 | Lighting system based on strip-shaped faculae |
| CN105987350A (en) * | 2015-03-05 | 2016-10-05 | 深圳市耀嵘科技有限公司 | Led light distribution lens |
| CN110285387A (en) * | 2019-07-11 | 2019-09-27 | 马瑞利汽车零部件(芜湖)有限公司 | A kind of vehicle signal lamp optical system |
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2015
- 2015-03-05 CN CN201520127194.1U patent/CN204629356U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987350A (en) * | 2015-03-05 | 2016-10-05 | 深圳市耀嵘科技有限公司 | Led light distribution lens |
| CN105387370A (en) * | 2015-11-17 | 2016-03-09 | 浙江农林大学 | Lighting system based on strip-shaped faculae |
| CN105276418A (en) * | 2015-11-18 | 2016-01-27 | 戴朝卿 | Line light spot optical lighting system based on cylindrical surface array |
| CN110285387A (en) * | 2019-07-11 | 2019-09-27 | 马瑞利汽车零部件(芜湖)有限公司 | A kind of vehicle signal lamp optical system |
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