CN104613416B - The design method of all-round smooth light-distribution lens and corresponding light-distribution lens - Google Patents
The design method of all-round smooth light-distribution lens and corresponding light-distribution lens Download PDFInfo
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- CN104613416B CN104613416B CN201510079233.XA CN201510079233A CN104613416B CN 104613416 B CN104613416 B CN 104613416B CN 201510079233 A CN201510079233 A CN 201510079233A CN 104613416 B CN104613416 B CN 104613416B
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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
-
- 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
- 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 kind of design method of all-round smooth light-distribution lens and corresponding light-distribution lens, including：A plurality of LED circles band is set and is surrounded on the secondary light-distribution lens of LED circle bands；The plane of incidence is used as using the optical axial plane of any one LED circle band, the light-source angle of the LED circle bands of optical axis side is divided into N number of segment of N number of small angle and corresponding distribution curve flux according to luminous intensity with the regularity of distribution of lighting angle, using the edge segment in N number of segment as starting by according to segment, using marginal point to originate illuminated point；Every LED circle is obtained with two corresponding full curves and each connects curve and the rotation for forming a closing, forms the three-dimensional shape of all-round smooth light-distribution lens.The present invention can be achieved to match somebody with somebody optical illumination more than the all-round light of 180 degree.
Description
Technical field
The present invention relates to technical field of LED illumination, is particularly, more particularly to the design method and phase of all-round smooth light-distribution lens
The light-distribution lens answered.
Background technology
LED (Light Emitting Diode) with its efficiency high, it is photochromic it is pure, energy consumption is low, long lifespan, it is pollution-free the advantages that
As the new type light source of 21 century most competitiveness.With the continuous improvement of LED light flux and light efficiency, LED is in lighting field
Using also more and more extensive.However, the surface light extraction of LED chip is distributed for Lambert (Lambertian), the beam angle of itself
Only 120 degree of degree, can not directly apply to illuminator, only by that could meet different photographs to its rational secondary light-distribution
Bright demand.
At present, in the market is designed based on porjection type reflector and lens the secondary light-distribution of LED light source, due to its luminous intensity distribution
Beam angle is less than 180 degree and can only realize the plane formula projection-type illumination on single surface, it is impossible to realizes the three-dimensional of whole space
Illumination, if for being readily formed corner or overhead illumination dark space on indoor lamp, have a strong impact on the ocular comfort degree of human body.
The content of the invention
In view of the above the shortcomings that prior art, in the prior art the defects of, it is an object of the invention to provide one
The design method of kind all-round smooth light-distribution lens and corresponding light-distribution lens,
Present invention solves the technical problem that it is：Throwing of the prior art is replaced using cascade ring circle platform free-form surface lens
Emitting reflector or lens, realize all-round smooth luminous intensity distribution design of the beam angle more than 180 degree.
To realize above-mentioned target and other related objectives, the present invention provides a kind of design method of all-round smooth light-distribution lens,
Comprise the following steps：
Step 1：A plurality of LED circles band is set and is surrounded on the secondary light-distribution lens of LED circle bands；
Every LED circle bands are mainly made up of the LED light source arranged in a plane annular；
The enveloping surface of a plurality of LED circles band is a frustum cone side；
The distribution curve flux that the secondary light-distribution lens are formed is divided into LED circles with the equal some of quantity, described
Some corresponds with the multiple LED circle bands；
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 includes flux ratio and leads to ratio equal to total light of each LED circle bands；
Step 2：Using the optical axial plane of any one LED circle band as the plane of incidence, on the plane of incidence, by optical axis side
The light-source angles of LED circle bands be divided into N number of small angle, wherein N >=4, i.e., each light-source angle is by being equally angularly spaced point
Match somebody with somebody；
Step 3：The distribution curve flux that step 1 has been separated is divided into N number of segment, light corresponding to every section in N section distribution curve fluxs
Flux is equal with the light-source angle luminous flux that step 2 is distributed；
Step 4：N number of small angle and the N number of segment of the distribution curve flux are corresponded；
Step 5：Using the edge segment in N number of segment as starting by according to segment, using marginal point to originate illuminated point,
Correspond to a small angle in N number of small angle；
Step 6：Every LED circle is obtained with two corresponding full curves；
Step 7：Each bar LED circles are sequentially connected from head to tail to form to the song of a closing with two corresponding full curves
Line, then arrangement central axis that the curve of the closing is enclosed to the LED light source of band around LED rotate, and it is saturating to form all-round smooth luminous intensity distribution
The three-dimensional shape of mirror；
Wherein, the step 6 comprises the following steps：
Step 6.1：The required distance of light source is left according to the lens incidence surface of all-round smooth light-distribution lens, is shone with starting
Taken corresponding to point on incident ray a little as the fisrt feature point on the lens incidence surface, first on the incidence surface is special
At sign point, had angle parallel to LED light source with originating the straight line of illuminated point line with incident ray shape, be secondary light-distribution lens
Starting deflection of light, the starting deflection of light is divided into the first deflection angle and the second deflection angle, the first deflection angle and
Fringence of the angle separated time of second deflection angle as incident ray after the lens incidence surface, by the law of refraction and right
A small angle in N number of small angle is answered, obtains the second feature on the incidence surface adjacent with the fisrt feature point on incidence surface
Point, corresponding second illuminated point adjacent with originating illuminated point of second feature point on the incidence surface；
Step 6.2：Step 6.1 is performed for each segment in N number of segment, is obtained successively each in N number of segment
The position of each characteristic point on lens incidence surface corresponding to illuminated point；
Step 6.3：It is saturating according to secondary light-distribution on the fringence after the fisrt feature point on the lens incidence surface
The lens thickness of mirror will be asked for a bit, as the fisrt feature point on the lens exiting surface of all-round smooth light-distribution lens, using as follows
Mode, obtain the position of each characteristic point on lens exiting surface：Step i1：It is parallel at fisrt feature point on the exiting surface
Had angle in LED light source with originating the straight line of illuminated point line with incident ray shape, be the starting light of secondary light-distribution lens
Deflection angle, the starting deflection of light is divided into the first deflection angle and the second deflection angle, the first deflection angle and the second deflection angle
Fringence of the angle separated time as incident ray after the lens exiting surface, by the law of refraction and corresponding described N number of
A small angle in small angle, obtain the second feature point on the exiting surface adjacent with the fisrt feature point on exiting surface, the light extraction
Corresponding second illuminated point adjacent with starting illuminated point of second feature point on face；Step i2：For each in N number of segment
Segment performs step i1, obtains each characteristic point on the lens exiting surface corresponding to each illuminated point in N number of segment successively
Position；
Step 6.4：Each characteristic point on the lens incidence surface is sequentially connected, by each spy on the lens exiting surface
Sign point is sequentially connected, and forms two full curves.
Optionally, each characteristic point is connected with straight line or smoothed curve successively.
Optionally, a small angle by the law of refraction and in corresponding N number of small angle, obtain with incidence surface
The adjacent incidence surface of fisrt feature point on second feature point, including：The normal of fisrt feature point is determined, perpendicular to the normal
Straight line form an intersection with described incidence surface, the intersection point of the intersection and the arm of angle at the small angle is respectively the fisrt feature
Point and second feature point；Wherein, the normal for determining starting sign point, including：Pass through the fisrt feature point incidence radiation direction
Obtain the incident vectorial Nin of the fisrt feature point；The folding of this feature point is obtained by the refracted light direction of the fisrt feature point
Directive amount Nrefract；The normal vector of each characteristic point is obtained by the following vector expression can of the law of refraction：Nf=n*
Nrefract–n0*Nin；Wherein Nf is the normal vector of this feature point, and n is medium refraction index where refracted light, and n0 is incident light
Medium refraction index where line.
Optionally, the quantity of the LED circles band is 2, and the distribution curve flux that the secondary light-distribution lens are formed is divided into 2
Part, 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 etc.
In 180 degree.
To realize above-mentioned target and other related objectives, the present invention provides a kind of all-round smooth light-distribution lens, and the luminous intensity distribution is saturating
Mirror is to manufacture what is obtained according to the design method of any of the above-described kind of all-round smooth light-distribution lens.
Optionally, the centre of the all-round smooth light-distribution lens carries through hole.
To realize above-mentioned target and other related objectives, the present invention provides a kind of all-round smooth light-distribution lens, including：It is surrounded on
For multiple annular LED circles with set secondary light-distribution lens, the enveloping surface of its corresponding each LED circles band is a round platform side
Face；Wherein, each LED circles band is arranged in by LED light source on different level respectively, and with certain coning angle
The three-dimensional arrangement form that annular stacking is formed in solid space is spent, corresponding, the secondary light-distribution lens are stepped truncated cone-shaped
Free-form surface lens；The distribution curve flux that the secondary light-distribution lens are formed is divided into LED circles with the equal multiple portions of quantity
Point, the multiple part is enclosed band with the multiple LED and corresponded；Wherein, the light distribution angle of the part distribution curve flux is less than
180 degree, the light distribution angle of the part distribution curve flux are more than or equal to 180 degree, and each several part distribution curve flux includes flux ratio
Total light equal to each LED circle bands leads to ratio.
Optionally, the quantity of the LED circles band is 2, and the distribution curve flux that the secondary light-distribution lens are formed is divided into 2
Part, 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 etc.
In 180 degree.
Optionally, the all-round smooth light-distribution lens are the curves by a closing in the arrangement of the LED light source of LED circle bands
Mandrel line rotates formed structure, and in the distribution curve flux of every LED circle band, every LED circle band is corresponding with two continuous songs
Line, the closed curve are to be enclosed to be sequentially connected from head to tail to form with two corresponding full curves by each bar LED.
Optionally, in two full curves corresponding to every LED circles band, one is located at the all-round smooth light-distribution lens
Incidence surface, another exiting surface for being located at the all-round smooth light-distribution lens, each bar is located at the full curve of incidence surface and each bar
Connection two-by-two between the full curve of exiting surface forms the closed curve.
Optionally, the centre of the all-round smooth light-distribution lens carries through hole.
Compared with prior art, the present invention has following beneficial effect：
(1) can be achieved to match somebody with somebody optical illumination more than the all-round light of 180 degree；
(2) determine that the method for lens curved surface can more quickly and accurately determine lens surfaces externally and internally using calculating characteristic point
Shape；
(3) form of overall lenses luminous intensity distribution is used, avoids influence of the monomer lens arrangement to luminous intensity distribution.
Brief description of the drawings
Fig. 1 is traditional projection lens outline drawing；
Fig. 2 is the all-round smooth light distributing system overall structure figure of the present invention；
Fig. 3 is the all-round smooth light-distribution lens distribution curve flux segmentation figure of the present invention；
Fig. 4 is the method schematic diagram that small angle is divided on the plane of incidence of the present invention；
Fig. 5 is each characteristic point and the schematic diagram being sequentially connected on fix-focus lens surface really of the invention；
Fig. 6 is the stepped truncated cone-shaped lens-section diagram of embodiments of the invention 1；
Fig. 7 is the stepped truncated cone-shaped free-form surface lens outline drawing of embodiments of the invention 1；
Fig. 8 is the stepped truncated cone-shaped lens-section diagram of embodiments of the invention 2；
Fig. 9 is the stepped truncated cone-shaped free-form surface lens outline drawing of embodiments of the invention 2.
Embodiment
Illustrate embodiments of the present invention below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through specific realities different in addition
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.It should be noted that in the case where not conflicting, the embodiment in the application
And the feature in embodiment can be mutually combined.
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
A kind of it is contemplated that light distributing method that can be achieved more than the all-round smooth luminous intensity distribution of 180 degree of construction.The light distributing method includes
The LED light source 1 and secondary light-distribution lens 2 of annular array；As shown in Figure 2.The LED light source 1 arranges on different level
Into multiple annular circle bands, and in the form of certain cone angle forms the three-dimensional arrangement of annular stacking in solid space；Institute
It is stepped truncated cone-shaped to state secondary light-distribution lens 2.Stepped circular platform free-form surface lens (such as Fig. 2), its design procedure are as follows：
A) with the circle band number according to LED light source, the distribution curve flux that secondary light-distribution lens 2 are formed is divided into equal amount
Some.Such as LED light source is arranged in 2 annular circle bands in Fig. 2, then secondary light-distribution lens 2 formed distribution curve flux
It is divided into two parts, wherein, the light distribution angle of a part of distribution curve flux is less than 180 degree, the luminous intensity distribution of another part distribution curve flux
Angle is more than or equal to 180 degree, and when distribution curve flux is divided into the part of more than 3, the light distribution angle of these three parts can be carried out
Any distribution, as long as ensureing and principle of the LED circles with the conservation of energy.As shown in figure 3, L1 represents less than the luminous intensity distribution of 180 degree
Part, L2 represent the luminous intensity distribution part more than 180 degree), and this two parts distribution curve flux includes flux ratio and is equal to each circle
Total light with LED light source leads to ratio, and the design of lens will be separately designed for each several part distribution curve flux separated；
B) optical axial plane of LED light source circle band is formed using any one annular LED light source as the plane of incidence, in the incidence
On face, the light-source angle of optical axis side is divided into N number of small angle, wherein N >=4, i.e., each light-source angle is by between equal angle
Every being allocated.To make figure clear, the present embodiment takes N=4, that is, is divided into 4 small angles, respectively ɑ 1, ɑ 2, ɑ 3, ɑ 4, such as schemes
Shown in 4；
C) by distribution curve flux that step a) has separated (i.e. light intensity with lighting angle distribution) be divided into 4 segments, be respectively
Ab, bc, cd, and de；Each light-source angle luminous flux that luminous flux corresponding to every section in 4 sections of distribution curve fluxs separates with step b)
It is equal；
D) 4 small angles of the LED light source circle band and described 4 segments of distribution curve flux are corresponded；
E) using the ab segments as starting by according to segment, using a points as starting illuminated point, then small angle corresponding to ab sections is ɑ
1, the required distance of light source is left according to lens incidence surface 201, a point 1a is taken on incident ray corresponding with a points as lens
Initiation feature point on incidence surface, at the initiation feature point, enter together parallel to the straight line of light source and the line for originating illuminated point a
Penetrate light shape to have angle β 1, be the starting deflection of light of lens, the starting deflection of light angle beta 1 is divided into the first deviation
The deflection angle β 12 of angle beta 11 and second, two deflection angle sizes can be any, and the present embodiment takes β 11：β 12=1：1, angle point
As incident ray, by incidence surface, (incidence surface 201 and exiting surface 202 of lens refer to the inner surface and appearance of lens to line respectively
Face) initiation feature point 1a after fringence, by the law of refraction, the normal n1 of 1a points is determined, perpendicular to normal n1 straight line
With described plane of light incidence one intersection of formation, the intersection point of the intersection and small angle ɑ 1 arm of angle is respectively 1a and 1b, and 1b points are made
For second feature point, second by according on segment bc, it is the second illuminated point to take b points, then b points have corresponded to second feature point 1b.
From above method, as long as obtaining the normal of each sign point with regard to each characteristic point can be obtained ----each characteristic point normal it is specific
Method for solving is as follows：1st, the incident vectorial Nin of this feature point is obtained by this feature point incidence radiation direction；2nd, this feature is passed through
Obtain the refraction vector Nrefract of this feature point in the refracted light direction of point；3rd, the following vector expression of the law of refraction is passed through
Can obtains the normal vector of each characteristic point：Nf=n*Nrefract-n0*Nin；Wherein Nf is the normal vector of this feature point, and n is
Medium refraction index where refracted light, n0 are medium refraction index where incident ray.
F) same to previous step, the lens incidence surface corresponding to each illuminated point c, d, and the e in 4 segments is obtained successively
The position of each characteristic point 1c, 1d, and 1e on 201；
G), will according to lens thickness on the fringence after the initiation feature point 1a on the lens incidence surface 201
A point 2a is asked for, as the initiation feature point on lens exiting surface 202, using the side similar with obtaining the characteristic point on incidence surface
Method, obtain the position of each characteristic point on lens exiting surface 202；
As shown in figure 5, it is specially：
According to the requirement of all-round smooth light-distribution lens thickness, on the fringence after the initiation feature point 1a on incidence surface
A point 2a is taken as the initiation feature point on exiting surface 202, the incident ray using the fringence as lens exiting surface 202, with
The 2a points are parallel to the fringence that the straight line of illuminated point a and the line of light source is lens exiting surface 202, the incident ray and fringence
Direction is the second deflection angle β 12 illustrated two arm of angle directions, using with determining that the characteristic point of incidence surface is identical
Method, the position of characteristic point 2b, 2c, 2d, 2e on the second face are tried to achieve successively.
H) each characteristic point on described incidence surface 201 and exiting surface 202 is sequentially connected, forms two continuous songs respectively
Line；
I) same to above step, two full curves of another circle corresponding to LED light source composition LED light source annulus are obtained
203 and 204；
J) four curves are connected to the curve to form a closing, arrangement central axis of the pitch of the laps with light source two-by-two
205 rotations, the three-dimensional shape of lens is formed, as shown in FIG. 6 and 7.
Another embodiment of the invention, in order to reach more preferable radiating effect, coordinate the lamp socket of Intermediate Gray through hole to make
With lens are also designed to the shape of Intermediate Gray through hole, and in design, the optical Designs of all-round smooth light-distribution lens is the same as the
The method of one embodiment, simply designed since the position edge in central band logical hole, obtain optical curve, then connect,
Rotated further around central axis, form the three-dimensional switch of lens, as shown in Figure 8, Figure 9.Above-described embodiment only this hair of illustrative
Bright principle and its effect, not for the limitation present invention.Any person skilled in the art all can be without prejudice to the present invention's
Under spirit and scope, modifications and changes are carried out to above-described embodiment.Therefore, those of ordinary skill in the art such as
All equivalent modifications completed under without departing from disclosed spirit and technological thought or change, should be by the present invention
Claim covered.
Claims (11)
1. a kind of design method of all-round smooth light-distribution lens, it is characterised in that comprise the following steps：
Step 1：A plurality of LED circles band is set and is surrounded on the secondary light-distribution lens of LED circle bands；
Every LED circle bands are mainly made up of the LED light source arranged in a plane annular；
The enveloping surface of a plurality of LED circles band is a frustum cone side；
The distribution curve flux that the secondary light-distribution lens are formed is divided into LED circles with the equal some of quantity, the multiple
Part is enclosed band with the multiple LED and corresponded；
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 portion
Distribution light curve includes flux ratio and leads to ratio equal to total light of each LED circle bands；
Step 2：Using the optical axial plane of any one LED circle band as the plane of incidence, on the plane of incidence, by optical axis side
The light-source angle of LED circle bands is divided into N number of small angle, wherein N >=4, i.e., each light-source angle is allocated by being equally angularly spaced；
Step 3：The distribution curve flux that step 1 has been separated is divided into N number of segment, luminous flux corresponding to every section in N section distribution curve fluxs
It is equal with the light-source angle luminous flux that step 2 is distributed；
Step 4：N number of small angle and the N number of segment of the distribution curve flux are corresponded；
Step 5：Using the edge segment in N number of segment as starting by according to segment, using marginal point to originate illuminated point, i.e., pair
Answer a small angle in N number of small angle；
Step 6：Every LED circle is obtained with two corresponding full curves；
Step 7：Each bar LED circles are sequentially connected from head to tail to form to the curve of a closing with two corresponding full curves, so
The arrangement central axis that the curve of the closing is enclosed to the LED light source of band around LED afterwards rotates, and forms the vertical of all-round smooth light-distribution lens
Shape；
Wherein, the step 6 comprises the following steps：
Step 6.1：The required distance of light source is left according to the lens incidence surface of all-round smooth light-distribution lens, with originating illuminated point pair
Taken on the incident ray answered a little as the fisrt feature point on the lens incidence surface, the fisrt feature point on the incidence surface
Place, had angle parallel to LED light source with originating the straight line of illuminated point line with incident ray shape, be rising for secondary light-distribution lens
Beginning deflection of light, the starting deflection of light is divided into the first deflection angle and the second deflection angle, the first deflection angle and second
Fringence of the angle separated time of deflection angle as incident ray after the lens incidence surface, pass through the law of refraction and corresponding institute
A small angle in N number of small angle is stated, obtains the second feature point on the incidence surface adjacent with the fisrt feature point on incidence surface, should
Corresponding second illuminated point adjacent with starting illuminated point of second feature point on incidence surface；
Step 6.2：Step 6.1 is performed for each segment in N number of segment, that obtains successively in N number of segment each is shone
The position of each characteristic point on the corresponding lens incidence surface of point；
Step 6.3：On the fringence after the fisrt feature point on the lens incidence surface, according to secondary light-distribution lens
Lens thickness 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 i1：At fisrt feature point on the exiting surface, enter together with originating the straight line of illuminated point line parallel to LED light source
Penetrate light shape to have angle, be the starting deflection of light of secondary light-distribution lens, the starting deflection of light is divided into first
The angle separated time of deflection angle and the second deflection angle, the first deflection angle and the second deflection angle passes through the lens light extraction as incident ray
Fringence behind face, by a small angle in the law of refraction and corresponding N number of small angle, obtain and first on exiting surface
Second feature point on the adjacent exiting surface of characteristic point, the second feature point on the exiting surface are corresponding adjacent with originating illuminated point
Second illuminated point；
Step i2：Step i1 is performed for each segment in N number of segment, obtains each illuminated point in N number of segment successively
The position of each characteristic point on corresponding lens exiting surface；
Step 6.4：Each characteristic point on the lens incidence surface is sequentially connected, by each characteristic point on the lens exiting surface
It is sequentially connected, forms two full curves.
2. all-round smooth light-distribution lens design method according to claim 1, it is characterised in that each characteristic point is used successively
Straight line or smoothed curve connect.
3. all-round smooth light-distribution lens design method according to claim 2, it is characterised in that it is described by the law of refraction with
And a small angle in corresponding N number of small angle, obtain second on the incidence surface adjacent with the fisrt feature point on incidence surface
Characteristic point, including：
Determine the normal of fisrt feature point, an intersection formed perpendicular to straight line and the described incidence surface of the normal, the intersection with
The intersection point of the arm of angle at the small angle is respectively the fisrt feature point and second feature point；
Wherein, the normal for determining starting sign point, including：
The incident vectorial Nin of the fisrt feature point is obtained by the fisrt feature point incidence radiation direction；
The refraction vector Nrefract of this feature point is obtained by the refracted light direction of the fisrt feature point；
The normal vector of each characteristic point is obtained by the following vector expression can of the law of refraction：Nf=n*Nrefract-n0*
Nin；Wherein Nf is the normal vector of this feature point, and n is medium refraction index where refracted light, and n0 is medium folding where incident ray
Penetrate rate.
4. all-round smooth light-distribution lens design method according to claim 1, it is characterised in that the quantity of the LED circles band
For 2, the distribution curve flux that the secondary light-distribution lens are formed is divided into 2 parts, wherein, the light distribution angle of a part of distribution curve flux
Degree 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. a kind of all-round smooth light-distribution lens, it is characterised in that the light-distribution lens are according to any one of Claims 1-4 institute
The design method for the all-round smooth light-distribution lens stated manufactures what is obtained.
6. all-round smooth light-distribution lens according to claim 5, it is characterised in that the Intermediate Gray of the all-round smooth light-distribution lens
There is through hole.
A kind of 7. all-round smooth light-distribution lens, it is characterised in that including：
Be surrounded on multiple annular LED circles is with set secondary light-distribution lens, the enveloping surface of its corresponding each LED circles band
One frustum cone side；
Each LED circles band is arranged in by LED light source on different level respectively, and is existed with certain cone angle
Solid space forms the three-dimensional arrangement form of annular stacking, and the secondary light-distribution lens are saturating for the free form surface of stepped truncated cone-shaped
Mirror；
The distribution curve flux that the secondary light-distribution lens are formed is divided into LED circles with the equal some of quantity, the multiple
Part is enclosed band with the multiple LED and corresponded；
The light distribution angle of the part distribution curve flux is less than 180 degree, and the light distribution angle of the part distribution curve flux is more than or equal to 180
Degree, each several part distribution curve flux include flux ratio and lead to ratio equal to total light of each LED circle bands.
8. all-round smooth light-distribution lens according to claim 7, it is characterised in that the quantity of the LED circles band is 2, institute
The distribution curve flux for stating secondary light-distribution lens formation is divided into 2 parts, and the light distribution angle of a part of 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.
9. all-round smooth light-distribution lens according to claim 7, it is characterised in that the all-round smooth light-distribution lens are by one
The curve of closing rotates formed structure around the arrangement central axis of the LED light source of LED circle bands, and matching somebody with somebody for band is enclosed in every LED
In light curve, every LED circle band is corresponding with two full curves, and the closed curve is to be enclosed by each bar LED with corresponding two
Bar full curve is sequentially connected from head to tail to form.
10. all-round smooth light-distribution lens according to claim 9, it is characterised in that two corresponding to every LED circles band
In full curve, an incidence surface for being located at the all-round smooth light-distribution lens, another positioned at the all-round smooth light-distribution lens
Exiting surface, each bar are located at the connection two-by-two that the full curve of incidence surface and each bar are located between the full curve of exiting surface and form institute
State closed curve.
11. all-round smooth light-distribution lens according to claim 7, it is characterised in that the centre of the all-round smooth light-distribution lens
With through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN2014104911193 | 2014-09-23 | ||
| 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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| CN104613416A CN104613416A (en) | 2015-05-13 |
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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 |
| EP3830476B1 (en) * | 2018-07-27 | 2022-09-07 | 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 |
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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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| CN104296071A (en) | 2015-01-21 |
| WO2016045176A1 (en) | 2016-03-31 |
| CN104613416A (en) | 2015-05-13 |
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