CN104613416A - Full-ambient light distribution lens designing method and corresponding light distribution lens - Google Patents
Full-ambient light distribution lens designing method and corresponding light distribution lens Download PDFInfo
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- CN104613416A CN104613416A CN201510079233.XA CN201510079233A CN104613416A CN 104613416 A CN104613416 A CN 104613416A CN 201510079233 A CN201510079233 A CN 201510079233A CN 104613416 A CN104613416 A CN 104613416A
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- 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
- F21V5/046—Refractors for light sources of lens shape the lens having a rotationally symmetrical shape about an axis for transmitting light in a direction mainly perpendicular to this axis, e.g. ring or annular lens with light source disposed inside the ring
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- 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
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- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
- F21Y2103/33—Elongate light sources, e.g. fluorescent tubes curved annular
Abstract
The invention provides a full-ambient light distribution lens designing method and a corresponding light distribution lens. The method includes: setting a plurality of LED ring bands and a secondary light distribution lens surrounding the LED ring bands; taking an optical axial plane of an optional LED ring band as an incident plane, equally dividing the light angle of the LED ring band on one side of an optical axis into N small angles and N small sections corresponding to light distribution curves according to the distribution rule of light intensity with the light angle, and taking small boundary sections of the N small sections as starting lit sections and boundary points as starting lit points; calculating two continuous curves corresponding to the LED ring bands and connecting the curves to form an enclosed curve rotating to form a three-dimensional shape of the full-ambient light distribution lens. With the method, full-ambient light distribution illumination greater than 180 degrees can be realized.
Description
Technical field
The present invention relates to technical field of LED illumination, particularly, particularly relate to the method for designing of all-round smooth light-distribution lens and corresponding light-distribution lens.
Background technology
LED (Light Emitting Diode) is high with its efficiency, photochromic pure, energy consumption is low, the life-span is long, the advantage such as pollution-free becomes 21 century most competitiveness new type light source.Along with improving constantly of LED light flux and light efficiency, LED is also more and more extensive in the application of lighting field.But the surperficial bright dipping of LED chip is Lambert (Lambertian) distribution, and the rising angle of itself only has 120 degree, cannot directly apply to illuminator, only have by meeting different lighting demands to its rational secondary light-distribution.
At present, market is designed the secondary light-distribution of LED light source based on porjection type reflector and lens, due to its luminous intensity distribution beam angle be less than 180 degree and can only realize single surface plane formula projection-type illumination, the three-dimensional illumination in whole space can not be realized, form corner or overhead illumination dark space if be easy on indoor lamp, have a strong impact on the ocular comfort degree of human body.
Summary of the invention
The shortcoming of prior art in view of the above, for defect of the prior art, the object of this invention is to provide a kind of method for designing of all-round smooth light-distribution lens and corresponding light-distribution lens,
The technical problem that the present invention solves is: adopt the circular platform free-form surface lens of cascade ring to replace porjection type reflector of the prior art or lens, achieves the all-round smooth luminous intensity distribution design that beam angle is greater than 180 degree.
For realizing above-mentioned target and other related objectives, the invention provides a kind of method for designing of all-round smooth light-distribution lens, comprising the steps:
Step 1: many LED astragals are set and are surrounded on the secondary light-distribution lens of LED astragal;
Every bar LED astragal is all formed primarily of the LED light source of annular array in a plane;
The enveloping surface of described many LED astragals is a frustum cone side;
The distribution curve flux that described secondary light-distribution lens is formed is divided into the multiple parts equal with LED astragal quantity, described multiple part and described multiple LED astragal one_to_one corresponding;
The light distribution angle of part distribution curve flux is less than 180 degree, and the light distribution angle of part distribution curve flux is more than or equal to 180 degree, each several part distribution curve flux comprise total light that flux ratio equals each LED astragal and lead to ratio;
Step 2: using the optical axial plane of any LED astragal as the plane of incidence, on the described plane of incidence, the light-source angle of the LED astragal of optical axis side is divided into N number of little angle, wherein N >=4, namely each light-source angle distributes by equal angle intervals;
Step 3: distribution curve flux step 1 separated is divided into N number of segment, every section in N section distribution curve flux corresponding luminous flux is all equal with the light-source angle luminous flux that step 2 is distributed;
Step 4: by described N number of little angle and the N number of segment one_to_one corresponding of described distribution curve flux;
Step 5: being shone segment using the edge segment in described N number of segment as initial, is initial illuminated point with marginal point, a little angle namely in corresponding described N number of little angle;
Step 6: obtain two full curves corresponding to every bar LED astragal;
Step 7: two full curves corresponding to each bar LED astragal successively head and the tail are connected to form a closed curve, then the arrangement central axis of described closed curve around the LED light source of LED astragal are rotated, form the three-dimensional shape of all-round smooth light-distribution lens;
Wherein, described step 6 comprises the steps:
Step 6.1: the required distance leaving light source according to the lens incidence surface of all-round smooth light-distribution lens, the incident ray corresponding with initial illuminated point is got a bit as the fisrt feature point on described lens incidence surface, fisrt feature point place on this incidence surface, the straight line being parallel to LED light source and initial illuminated point line has angle with incident ray shape, for the initial deflection of light of secondary light-distribution lens, described initial deflection of light is divided into the first deflection angle and the second deflection angle, the angle separated time of the first deflection angle and the second deflection angle is as the fringence of incident ray after described lens incidence surface, by a little angle in the law of refraction and corresponding described N number of little angle, obtain the second feature point on the incidence surface adjacent with the fisrt feature point on incidence surface, the second illuminated point that second feature point on this incidence surface is corresponding adjacent with initial illuminated point,
Step 6.2: perform step 6.1 for each segment in N number of segment, obtain the position of each characteristic point on the lens incidence surface corresponding to each illuminated point in N number of segment successively;
Step 6.3: on the fringence after the fisrt feature point on described lens incidence surface, lens thickness according to secondary light-distribution lens will be asked for a bit, as the fisrt feature point on the lens exiting surface of all-round smooth light-distribution lens, in the following way, obtain the position of each characteristic point on lens exiting surface: step I 1: the fisrt feature point place on this exiting surface, the straight line being parallel to LED light source and initial illuminated point line has angle with incident ray shape, for the initial deflection of light of secondary light-distribution lens, described initial deflection of light is divided into the first deflection angle and the second deflection angle, the angle separated time of the first deflection angle and the second deflection angle is as the fringence of incident ray after described lens exiting surface, by a little angle in the law of refraction and corresponding described N number of little angle, obtain the second feature point on the exiting surface adjacent with the fisrt feature point on exiting surface, the second illuminated point that second feature point on this exiting surface is corresponding adjacent with initial illuminated point, step I 2: perform step I 1 for each segment in N number of segment, obtain the position of each characteristic point on the lens exiting surface corresponding to each illuminated point in N number of segment successively,
Step 6.4: each characteristic point on described lens incidence surface connected successively, connects successively by each characteristic point on described lens exiting surface, forms two full curves.
Optionally, described each characteristic point couples together with straight line or smoothed curve successively.
Optionally, described by a little angle in the law of refraction and corresponding described N number of little angle, obtain the second feature point on the incidence surface adjacent with the fisrt feature point on incidence surface, comprise: the normal determining fisrt feature point, form an intersection perpendicular to the straight line of this normal and described incidence surface, the intersection point of the arm of angle at this intersection and described little angle is respectively described fisrt feature point and second feature point; Wherein, describedly determine the initial normal levied a little, comprising: the incidence vector Nin being obtained this fisrt feature point by the incident radiation direction of this fisrt feature point; The refraction vector Nrefract of this characteristic point is obtained by the refracted ray direction of this fisrt feature point; The normal vector of each characteristic point just can be obtained: Nf=n*Nrefract-n0*Nin by the following vector expression of the law of refraction; Wherein Nf is the normal vector of this characteristic point, and n is refracted ray place medium refraction index, and n0 is incident ray place medium refraction index.
Optionally, the quantity of described LED astragal is 2, and the distribution curve flux that described secondary light-distribution lens is formed is divided into 2 parts, and wherein, the light distribution angle of a part of distribution curve flux is less than 180 degree, and the light distribution angle of another part distribution curve flux is more than or equal to 180 degree.
For realizing above-mentioned target and other related objectives, the invention provides a kind of all-round smooth light-distribution lens, described light-distribution lens obtains according to any one the method for designing manufacture of all-round smooth light-distribution lens above-mentioned.
Optionally, the centre of described all-round smooth light-distribution lens is with through hole.
For realizing above-mentioned target and other related objectives, the invention provides a kind of all-round smooth light-distribution lens, comprising: the secondary light-distribution lens set by LED astragal being surrounded on multiple annular, the enveloping surface of its corresponding each described LED astragal is a frustum cone side; Wherein, each described LED astragal is arranged on different level by LED light source respectively, and form the stacking three-dimensional arrangement form of annular with certain cone angle at solid space, corresponding, described secondary light-distribution lens is the free-form surface lens of stepped truncated cone-shaped; The distribution curve flux that described secondary light-distribution lens is formed is divided into the multiple parts equal with LED astragal quantity, described multiple part and described multiple LED astragal one_to_one corresponding; Wherein, the light distribution angle of the described distribution curve flux of part is less than 180 degree, and the light distribution angle of the described distribution curve flux of part is more than or equal to 180 degree, each several part distribution curve flux comprise total light that flux ratio equals each LED astragal and lead to ratio.
Optionally, the quantity of described LED astragal is 2, and the distribution curve flux that described secondary light-distribution lens is formed is divided into 2 parts, and wherein, the light distribution angle of a part of distribution curve flux is less than 180 degree, and the light distribution angle of another part distribution curve flux is more than or equal to 180 degree.
Optionally, described all-round smooth light-distribution lens rotates around the arrangement central axis of the LED light source of LED astragal the structure formed by a closed curve, in the distribution curve flux of every bar LED astragal, every bar LED astragal is to there being two full curves, and described closed curve is that two full curves corresponding to each bar LED astragal are connected to form successively from beginning to end.
Optionally, in two full curves that described every bar LED astragal is corresponding, article one, be positioned at the incidence surface of described all-round smooth light-distribution lens, another is positioned at the exiting surface of described all-round smooth light-distribution lens, and each bar is connected to form described closed curve at the full curve of incidence surface and each bar between two between the full curve of exiting surface.
Optionally, the centre of described all-round smooth light-distribution lens is with through hole.
Compared with prior art, the present invention has following beneficial effect:
(1) the all-round smooth luminous intensity distribution illumination being greater than 180 degree can be realized;
(2) way calculating characteristic point determination lens curved surface is adopted can to determine lens surfaces externally and internally shape more quickly and accurately;
(3) adopt the form of overall lens luminous intensity distribution, avoid the impact of monomer lens arrangement on luminous intensity distribution.
Accompanying drawing explanation
Fig. 1 is traditional projection lens outline drawing;
Fig. 2 is all-round smooth light distributing system overall structure figure of the present invention;
Fig. 3 is all-round smooth light-distribution lens distribution curve flux segmentation figure of the present invention;
Fig. 4 is the method schematic diagram dividing little angle on the plane of incidence of the present invention;
Fig. 5 is the method schematic diagram of the luminous intensity distribution spatial division segment in outgoing of the present invention;
Fig. 6 is the schematic diagram determining that on lens surface, each characteristic point also connects successively of the present invention;
Fig. 7 is the stepped truncated cone-shaped lens-section diagrams of embodiments of the invention 1;
Fig. 8 is embodiments of the invention 1 stepped truncated cone-shaped free-form surface lens outline drawing;
Fig. 9 is the stepped truncated cone-shaped lens-section diagrams of embodiments of the invention 2;
Figure 10 is embodiments of the invention 2 stepped truncated cone-shaped free-form surface lens outline drawing.
Detailed description of the invention
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this description can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by detailed description of the invention different in addition, and the every details in this description also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
The present invention is intended to construct a kind of light distributing method realizing being greater than 180 degree of all-round smooth luminous intensity distributions.This light distributing method comprises LED light source 1 and the secondary light-distribution lens 2 of annular array; As shown in Figure 2.Described LED light source 1 is arranged in the astragal of multiple annular on different level, and forms the stacking three-dimensional arrangement form of annular with certain cone angle at solid space; Described secondary light-distribution lens 2 is stepped truncated cone-shaped.Stepped circular platform free-form surface lens (as Fig. 2), its design procedure is as follows:
A) follow the astragal number according to LED light source, the distribution curve flux that secondary light-distribution lens 2 is formed is divided into multiple parts of equal amount.Such as, in Fig. 2, LED light source is arranged in 2 annular astragals, the distribution curve flux that then secondary light-distribution lens 2 is formed also is divided into two parts, wherein, the light distribution angle of part distribution curve flux is less than 180 degree, the light distribution angle of another part distribution curve flux is more than or equal to 180 degree, when distribution curve flux is divided into the part of more than 3, the light distribution angle of these three parts can distribute arbitrarily, as long as ensure the principle with the LED astragal conservation of energy.As shown in Figure 3, L1 represents the luminous intensity distribution part being less than 180 degree, L2 represents the luminous intensity distribution part being greater than 180 degree), and this two parts distribution curve flux comprise total light that flux ratio equals each astragal LED light source and lead to ratio, the design of lens designs respectively by for each several part distribution curve flux separated;
B) optical axial plane of LED light source astragal is formed as the plane of incidence using any annular LED light source, on the described plane of incidence, the light-source angle of optical axis side is divided into N number of little angle, wherein N >=4, namely each light-source angle distributes by equal angle intervals.For making figure clear, the present embodiment gets N=4, is namely divided into 4 little angles, is respectively α 1, α 2, α 3, α 4, as shown in Figure 4;
C) as shown in Figure 5, the distribution curve flux (i.e. the distribution of light intensity lighting angle) step a) separated is divided into 4 segments, is respectively ab, bc, cd, and de; Every section in 4 sections of distribution curve fluxs corresponding luminous flux and step b) each light-source angle luminous flux of separating is equal;
D) by 4 little angles of described LED light source astragal and described distribution curve flux 4 segment one_to_one corresponding;
E) segment is shone using described ab segment as initial, be initial illuminated point with a point, then the little angle of ab section correspondence is α 1, the required distance of light source is left according to lens incidence surface 201, the incident ray corresponding with a point is got 1 1a as the initiation feature point on lens incidence surface, at this initiation feature point place, the straight line being parallel to the line of light source and initial illuminated point a to have angle β 1 with incident ray shape, for the initial deflection of light of lens, described initial deflection of light β 1 is divided into the first deflection angle β 11 and the second deflection angle β 12, two deflection angle sizes can be any, the present embodiment gets β 11: β 12=1: 1, angle separated time is as the fringence of incident ray after the initiation feature point 1a of incidence surface (incidence surface 201 of lens and exiting surface 202 refer to inner surface and the outer surface of lens respectively), pass through the law of refraction, determine the normal n1 of 1a point, an intersection is formed perpendicular to the straight line of normal n1 and described plane of light incidence, the intersection point of the arm of angle of this intersection and little angle α 1 is respectively 1a and 1b, 1b point is namely as second feature point, shone on segment bc second, getting b point is the second illuminated point, then b point is corresponding this second feature point 1b.From method above, as long as obtain the normal respectively levied a little just can obtain each characteristic point---the concrete method for solving of-each characteristic point normal is as follows: the incidence vector Nin 1, being obtained this characteristic point by this characteristic point incident ray direction; 2, the refraction vector Nrefract of this characteristic point is obtained by the refracted ray direction of this characteristic point; 3, the normal vector of each characteristic point can just be obtained by the following vector expression of the law of refraction: Nf=n*Nrefract-n0*Nin; Wherein Nf is the normal vector of this characteristic point, and n is refracted ray place medium refraction index, and n0 is incident ray place medium refraction index.
F) same to previous step, obtains each illuminated point c in 4 segments, d successively, and each characteristic point 1c, the 1d on lens incidence surface 201 corresponding to e, and the position of 1e;
G) on the fringence after the initiation feature point 1a on described lens incidence surface 201,1 2a to be asked for according to lens thickness, as the initiation feature point on lens exiting surface 202, adopt the method similar with the characteristic point obtained on incidence surface, obtain the position of each characteristic point on lens exiting surface 202;
As shown in Figure 6, be specially:
According to the requirement of all-round smooth light-distribution lens thickness, fringence after the initiation feature point 1a on incidence surface is got 1 2a as the initiation feature point on exiting surface 202, incident ray using this fringence as lens exiting surface 202, to be parallel to the fringence of straight line for lens exiting surface 202 of the line of illuminated point a and light source at this 2a point, this incident ray and fringence direction are two arm of angle directions of illustrated second deflection angle β 12, adopt and determine the identical method of the characteristic point of incidence surface, try to achieve the characteristic point 2b on second successively, 2c, 2d, the position of 2e.
H) described incidence surface 201 is connected successively with each characteristic point on exiting surface 202, forms two full curves respectively;
I) with above step, two full curves 203 and 204 corresponding to another astragal LED light source formation LED light source endless belt are obtained;
J) described four curves are connected to form between two a closed curve, the arrangement central axis 205 of pitch of the laps band light source rotates, and forms the three-dimensional shape of lens, as shown in Figures 7 and 8.
Another embodiment of the invention, in order to reach better radiating effect, coordinate the lamp socket of Intermediate Gray through hole to use, lens can also be designed to the shape of Intermediate Gray through hole, when designing, the optical Design of all-round smooth light-distribution lens, with the method for the first embodiment, just designs, obtains optical curve from the edge, position of central zone through hole, then couple together, rotate around central axis again, form the three-dimensional switch of lens, as shown in Figure 9, Figure 10.Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (11)
1. a method for designing for all-round smooth light-distribution lens, is characterized in that, comprise the steps:
Step 1: many LED astragals are set and are surrounded on the secondary light-distribution lens of LED astragal;
Every bar LED astragal is all formed primarily of the LED light source of annular array in a plane;
The enveloping surface of described many LED astragals is a frustum cone side;
The distribution curve flux that described secondary light-distribution lens is formed is divided into the multiple parts equal with LED astragal quantity, described multiple part and described multiple LED astragal one_to_one corresponding;
The light distribution angle of part distribution curve flux is less than 180 degree, and the light distribution angle of part distribution curve flux is more than or equal to 180 degree, each several part distribution curve flux comprise total light that flux ratio equals each LED astragal and lead to ratio;
Step 2: using the optical axial plane of any LED astragal as the plane of incidence, on the described plane of incidence, the light-source angle of the LED astragal of optical axis side is divided into N number of little angle, wherein N >=4, namely each light-source angle distributes by equal angle intervals;
Step 3: distribution curve flux step 1 separated is divided into N number of segment, every section in N section distribution curve flux corresponding luminous flux is all equal with the light-source angle luminous flux that step 2 is distributed;
Step 4: by described N number of little angle and the N number of segment one_to_one corresponding of described distribution curve flux;
Step 5: being shone segment using the edge segment in described N number of segment as initial, is initial illuminated point with marginal point, a little angle namely in corresponding described N number of little angle;
Step 6: obtain two full curves corresponding to every bar LED astragal;
Step 7: two full curves corresponding to each bar LED astragal successively head and the tail are connected to form a closed curve, then the arrangement central axis of described closed curve around the LED light source of LED astragal are rotated, form the three-dimensional shape of all-round smooth light-distribution lens;
Wherein, described step 6 comprises the steps:
Step 6.1: the required distance leaving light source according to the lens incidence surface of all-round smooth light-distribution lens, the incident ray corresponding with initial illuminated point is got a bit as the fisrt feature point on described lens incidence surface, fisrt feature point place on this incidence surface, the straight line being parallel to LED light source and initial illuminated point line has angle with incident ray shape, for the initial deflection of light of secondary light-distribution lens, described initial deflection of light is divided into the first deflection angle and the second deflection angle, the angle separated time of the first deflection angle and the second deflection angle is as the fringence of incident ray after described lens incidence surface, by a little angle in the law of refraction and corresponding described N number of little angle, obtain the second feature point on the incidence surface adjacent with the fisrt feature point on incidence surface, the second illuminated point that second feature point on this incidence surface is corresponding adjacent with initial illuminated point,
Step 6.2: perform step 6.1 for each segment in N number of segment, obtain the position of each characteristic point on the lens incidence surface corresponding to each illuminated point in N number of segment successively;
Step 6.3: on the fringence after the fisrt feature point on described lens incidence surface, lens thickness according to secondary light-distribution lens will be asked for a bit, as the fisrt feature point on the lens exiting surface of all-round smooth light-distribution lens, in the following way, the position of each characteristic point on lens exiting surface is obtained:
Step I 1: the fisrt feature point place on this exiting surface, the straight line being parallel to LED light source and initial illuminated point line has angle with incident ray shape, for the initial deflection of light of secondary light-distribution lens, described initial deflection of light is divided into the first deflection angle and the second deflection angle, the angle separated time of the first deflection angle and the second deflection angle is as the fringence of incident ray after described lens exiting surface, by a little angle in the law of refraction and corresponding described N number of little angle, obtain the second feature point on the exiting surface adjacent with the fisrt feature point on exiting surface, the second illuminated point that second feature point on this exiting surface is corresponding adjacent with initial illuminated point,
Step I 2: perform step I 1 for each segment in N number of segment, obtain the position of each characteristic point on the lens exiting surface corresponding to each illuminated point in N number of segment successively;
Step 6.4: each characteristic point on described lens incidence surface connected successively, connects successively by each characteristic point on described lens exiting surface, forms two full curves.
2. all-round smooth light-distribution lens method for designing according to claim 1, it is characterized in that, described each characteristic point couples together with straight line or smoothed curve successively.
3. all-round smooth light-distribution lens method for designing according to claim 2, it is characterized in that, described by a little angle in the law of refraction and corresponding described N number of little angle, obtain the second feature point on the incidence surface adjacent with the fisrt feature point on incidence surface, comprising:
Determine the normal of fisrt feature point, form an intersection perpendicular to the straight line of this normal and described incidence surface, the intersection point of the arm of angle at this intersection and described little angle is respectively described fisrt feature point and second feature point;
Wherein, describedly determine the initial normal levied a little, comprising:
The incidence vector Nin of this fisrt feature point is obtained by the incident radiation direction of this fisrt feature point;
The refraction vector Nrefract of this characteristic point is obtained by the refracted ray direction of this fisrt feature point;
The normal vector of each characteristic point just can be obtained: Nf=n*Nrefract-n0*Nin by the following vector expression of the law of refraction; Wherein Nf is the normal vector of this characteristic point, and n is refracted ray place medium refraction index, and n0 is incident ray place medium refraction index.
4. all-round smooth light-distribution lens method for designing according to claim 1, it is characterized in that, the quantity of described LED astragal is 2, the distribution curve flux that described secondary light-distribution lens is formed is divided into 2 parts, wherein, the light distribution angle of part distribution curve flux is less than 180 degree, and the light distribution angle of another part distribution curve flux is more than or equal to 180 degree.
5. an all-round smooth light-distribution lens, is characterized in that, described light-distribution lens is that the method for designing manufacture of all-round smooth light-distribution lens according to any one of claim 1 to 4 obtains.
6. all-round smooth light-distribution lens according to claim 5, is characterized in that, the centre of described all-round smooth light-distribution lens is with through hole.
7. an all-round smooth light-distribution lens, is characterized in that, comprising:
Be surrounded on the secondary light-distribution lens set by LED astragal of multiple annular, the enveloping surface of its corresponding each described LED astragal is a frustum cone side;
Each described LED astragal is arranged on different level by LED light source respectively, and forms the stacking three-dimensional arrangement form of annular with certain cone angle at solid space, and described secondary light-distribution lens is the free-form surface lens of stepped truncated cone-shaped;
The distribution curve flux that described secondary light-distribution lens is formed is divided into the multiple parts equal with LED astragal quantity, described multiple part and described multiple LED astragal one_to_one corresponding;
The light distribution angle of the described distribution curve flux of part is less than 180 degree, and the light distribution angle of the described distribution curve flux of part is more than or equal to 180 degree, each several part distribution curve flux comprise total light that flux ratio equals each LED astragal and lead to ratio.
8. all-round smooth light-distribution lens according to claim 7, it is characterized in that, the quantity of described LED astragal is 2, the distribution curve flux that described secondary light-distribution lens is formed is divided into 2 parts, the light distribution angle of part distribution curve flux is less than 180 degree, and the light distribution angle of another part distribution curve flux is more than or equal to 180 degree.
9. all-round smooth light-distribution lens according to claim 7, it is characterized in that, described all-round smooth light-distribution lens rotates around the arrangement central axis of the LED light source of LED astragal the structure formed by a closed curve, in the distribution curve flux of every bar LED astragal, every bar LED astragal is to there being two full curves, and described closed curve is that two full curves corresponding to each bar LED astragal are connected to form successively from beginning to end.
10. all-round smooth light-distribution lens according to claim 9, it is characterized in that, in two full curves that described every bar LED astragal is corresponding, article one, be positioned at the incidence surface of described all-round smooth light-distribution lens, another is positioned at the exiting surface of described all-round smooth light-distribution lens, and each bar is connected to form described closed curve at the full curve of incidence surface and each bar between two between the full curve of exiting surface.
11. all-round smooth light-distribution lens according to claim 7, is characterized in that, the centre of described all-round smooth light-distribution lens is with through hole.
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| CN201510079233.XA CN104613416B (en) | 2014-09-23 | 2015-02-13 | The design method of all-round smooth light-distribution lens and corresponding light-distribution lens |
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| CN201410491119.3A CN104296071A (en) | 2014-09-23 | 2014-09-23 | Method for designing full-periphery light distribution lens and corresponding light-distribution lens |
| CN201510079233.XA CN104613416B (en) | 2014-09-23 | 2015-02-13 | The design method of all-round smooth light-distribution lens and corresponding light-distribution lens |
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| CN201410491119.3A Pending CN104296071A (en) | 2014-09-23 | 2014-09-23 | Method for designing full-periphery light distribution lens and corresponding light-distribution lens |
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| CN106287572A (en) * | 2015-06-26 | 2017-01-04 | 核工业西南物理研究院 | Annular LED light fixture optical mask and light fixture thereof |
| CN105387382B (en) * | 2015-11-24 | 2017-09-22 | 戴朝卿 | A kind of radial direction based on annular array of light sources matches somebody with somebody lighting system partially |
| WO2020020676A1 (en) * | 2018-07-27 | 2020-01-30 | Signify Holding B.V. | Collimating lens and lighting device |
| CN112393136B (en) * | 2020-11-30 | 2023-03-14 | 浙江光锥科技有限公司 | Method for generating 60-degree beam angle lens structure |
| CN214580892U (en) * | 2020-12-28 | 2021-11-02 | 苏州欧普照明有限公司 | Hyperboloid lens and LED lamps and lanterns |
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| CN102062348A (en) * | 2010-09-07 | 2011-05-18 | 上海三思电子工程有限公司 | Method for designing side lighting panoramic lens for LED |
| CN102193193A (en) * | 2010-03-11 | 2011-09-21 | 上海三思电子工程有限公司 | Method for designing lens having disc-shaped uniformly illuminating faculae |
| CN103075658A (en) * | 2012-08-23 | 2013-05-01 | 苏州创高电子有限公司 | Light emitting diode (LED) lamp emitting multilayer annular light |
| WO2014086782A1 (en) * | 2012-12-04 | 2014-06-12 | Osram Gmbh | Lens, omnidirectional illuminating device having the lens and retrofit lamp |
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| CN102012001B (en) * | 2009-09-07 | 2013-06-19 | 上海三思电子工程有限公司 | Method for designing lens for LED (Light Emitting Diode) |
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| KR20140033527A (en) * | 2012-08-14 | 2014-03-19 | 삼성전자주식회사 | Condensing lens and lighting device including the same |
| CN102943993B (en) * | 2012-11-23 | 2016-12-21 | 上海三思电子工程有限公司 | A kind of lens design method of rectangular illumination hot spot |
| CN203273698U (en) * | 2013-04-16 | 2013-11-06 | 王海军 | Secondary internal reflective lens and LED lamp employing same |
| CN203656600U (en) * | 2013-08-21 | 2014-06-18 | 上海创波光电科技有限公司 | Ring LED light source adopting improved structure |
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| CN102193193A (en) * | 2010-03-11 | 2011-09-21 | 上海三思电子工程有限公司 | Method for designing lens having disc-shaped uniformly illuminating faculae |
| CN102062348A (en) * | 2010-09-07 | 2011-05-18 | 上海三思电子工程有限公司 | Method for designing side lighting panoramic lens for LED |
| CN103075658A (en) * | 2012-08-23 | 2013-05-01 | 苏州创高电子有限公司 | Light emitting diode (LED) lamp emitting multilayer annular light |
| WO2014086782A1 (en) * | 2012-12-04 | 2014-06-12 | Osram Gmbh | Lens, omnidirectional illuminating device having the lens and retrofit lamp |
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| CN104613416B (en) | 2017-11-21 |
| WO2016045176A1 (en) | 2016-03-31 |
| CN104296071A (en) | 2015-01-21 |
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Effective date of registration: 20190627 Address after: 201100 Shanghai city Minhang District Shuying Road No. 1280 Co-patentee after: Shanghai Sansi Technology Co., Ltd. Patentee after: Shanghai Sansi Tecnology Co., Ltd., Co-patentee after: Jiashan Sansi Photoelectric Technology Co., Ltd. Co-patentee after: PUJIANG SANSI PHOTOELECTRIC TECHNOLOGY CO., LTD. Address before: 201100 Shanghai city Minhang District Shuying Road No. 1280 Co-patentee before: Shanghai Sansi Technology Co., Ltd. Patentee before: Shanghai Sansi Tecnology Co., Ltd., Co-patentee before: Jiashan Sansi Photoelectric Technology Co., Ltd. |