CN106813148A - A kind of shot-light with effectively luminous energy high - Google Patents
A kind of shot-light with effectively luminous energy high Download PDFInfo
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- CN106813148A CN106813148A CN201510849156.1A CN201510849156A CN106813148A CN 106813148 A CN106813148 A CN 106813148A CN 201510849156 A CN201510849156 A CN 201510849156A CN 106813148 A CN106813148 A CN 106813148A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- 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
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
-
- 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
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a kind of shot-light with effectively luminous energy high, solve the problems, such as that the effective rate of utilization of existing shot-light light is not high, it includes a radiator casing, and individual cavity is arranged at bottom, and there is a platform at middle part, and the heat radiator fin on top is connected to platform；COB light source is placed on platform central, and towards the cavity of bottom；COB support pressures are in COB light source；It is reflector below COB light source；It is preceding decorative circle below reflector；One lens is clipped between reflector and COB supports, and reflector is buckled on lens；The lens be one by lateral profile and nearside wheel profile into bowl-type collector lens；The outboard wheel profile is centrosymmetric multinomial aspheric curve, and the inner side contour line is centrosymmetric Bezier spline curve.Lens of the invention add the shot-light structure of reflector to greatly improve peak light intensity, most light is incident on effective lighting region, light pollution, dazzle are reduced, so that more energy-conservation.
Description
Technical field
The present invention relates to a kind of shot-light, referring in particular to a kind of change by optical texture has penetrating for effectively luminous energy high
Lamp.
Background technology
With the further development of LED light source, increasing people recognizes the advantage of this light source：Green, energy-conservation, length
Life-span, easy care etc..In commercial lighting field, there is a kind of light fixture of shot-light of guide rail as the application of new light sources flourishes
Come.Compared to conventional guide rails shot-light, new LED shot-light of guide rail seems to be more applicable for this lamp type, there is more wide
Application market.In major business supermarkets illuminate, LED shot-light of guide rail becomes an indispensable lamp type.
However as going deep into for application field, all kinds of problems also occur therewith.The present invention will set foot in an optics for shot-light
Problem.The LED shot-light of guide rail optical design major parts at initial stage are such：COB light source, plus a reflector for optically focused, then
Increase a transparent glass sheet on reflector with dust-proof, cost performance is very high, and applicability is also very strong.But when shot-light optically focused angle
When below 30 °, optical problem is also occurred as soon as：A part of light is gathered within 30 ° by reflector, and another part light is saturating
Cross glass directly exhale come, due to the problem of shot-light framework, this part exhale come light always have some not 30 ° with
Interior, which results in two problems, one is that hot spot not enough uniformly has aperture, and two is there is useless veiling glare and waste light energy.
The scheme for solving the above problems in the industry at present substantially has three kinds：First, while reducing light source luminescent area, depth is used
The larger reflector of degree；2nd, optical lens optically focused is used；3rd, the combination optically focused of reflector is added using lens.
The light source power of above-mentioned the first scheme cannot be lifted, and the power of whole light fixture does less, and applicability is not strong；Second
Kind of scheme is to avoid causing bigger hot spot problem, and lens surface has all done moire or atomization process, but this processing mode
A series of glare problem can be caused, be seldom used；The third scheme, lens and reflector need to arrange in pairs or groups and use, and in the market is
There is specific product to occur, hot spot uniformity and the efficiency of light energy utilization are all greatly improved, yet with the various of product category
Property, corresponding lens and reflector will be developed for each product, its versatility, construction cycle, cost performance are without very
Big advantage.
Current shot-light of guide rail has many series, and the model of total is more, and the overwhelming majority therein is using " COB light source, plus one
The reflector of individual optically focused, then on reflector increase a transparent glass sheet with dust-proof " framework, substantially may be used on rising angle
To be divided three classes：15 °, 24 °, 36 °, although most of reflector can be general, but in order to adapt to the demand in market, in advance
The shot-light of guide rail kind of half is estimated or had in order to improve hot spot, it is necessary to make a series of improvement on optics and structure.Separately
On the one hand, it is also contemplated that needing quick incision market, the structure of former shot-light of guide rail should be constant, preferably only increases an optical lens
Mirror, you can the hot spot of optimization shot-light.
The optical texture of existing shot-light is as shown in Figure 1：There is individual cavity one radiator casing 11, its underpart, and middle part has one
Individual platform, the heat radiator fin on top is connected to platform；COB light source 12 is placed on platform central, and towards the cavity of bottom；
COB supports 13 are pressed in COB light source 12, with fixed light source；It is further below reflector 14；It is further below glass cover 16；Further below
It is preceding decorative circle 15, it holds glass cover 16 and reflector 14, and has appropriate structure to tip upside down on the inner side of radiator casing 11.This
Within light distribution in framework is as shown in Fig. 2 a part of light gathers first retainer by reflector 14, another part light
Directly exhale to come through glass cover 16, due to the problem of shot-light framework, this part exhales the light angle come and is more than 30 °.
Thus, there is obvious halation (inner ring is brighter, and outer ring is dark) in the hot spot of shot-light, and the brighter part of inner ring is the light within 24 °
Line, the dark part in outer ring is greater than 24 ° of light (being directed through the light out of glass cover 16), and hot spot is in 24 ° of boundaries
Illumination only centered on illumination 38%, the Illumination Distribution of whole hot spot is simultaneously uneven.Most of light all beyond 24 ° of angles,
The effective rate of utilization of light is not in fact high, only accounts for 1/3rd of total light flux.
The content of the invention
The invention aims to solve the problems, such as prior art, there is provided a kind of penetrating with effectively luminous energy high
Lamp, can make the light major part light of shot-light be incident on effective lighting region, be conducive to energy-conservation.
The purpose of the present invention is achieved through the following technical solutions：
A kind of shot-light with effectively luminous energy high, it is characterised in that：
There is individual cavity one radiator casing, its underpart, and there is a platform at middle part, and the heat radiator fin on top is connected to put down
Platform；COB light source is placed on platform central, and towards the cavity of bottom；COB support pressures are in COB light source；The COB light source
Here is reflector；It is preceding decorative circle below the reflector, reflector is fitted in preceding decorative circle；One lens be clipped in reflector and
Between COB supports, and reflector is buckled on lens；
The lens be one by lateral profile and nearside wheel profile into bowl-type collector lens；The outboard wheel profile is
Centrosymmetric multinomial aspheric curve, the inner side contour line is centrosymmetric Bezier spline curve.
The outboard wheel profile of the lens is centrosymmetric multinomial aspheric curve and inner side profile is center pair
The Bezier spline curve of title, curve shape is determined using lighttools optical softwares.
The outboard wheel profile of the lens is centrosymmetric multinomial aspheric curve, and its curve equation is：
X is profile transverse axis parameter, independent variable in formula；Y is profile longitudinal axis parameter；C is aspherical curvature, and k is circular cone
Conic constant, C2nIt is polynomial coefficient；Coefficient c is positive number, and coefficient k is negative, coefficient C2nThe value in the range of real number, n=
2-10 simply represent a total of nine of this coefficient：C4、C6、C8、C10、C12、C14、C16、C18、C20If, C2nDo not count specifically
Value, acquiescence coefficient value is 0；This three classes specific span of coefficient is determined according to situations below：
Conic section constant k values are selected first：According to the distance of light source to cambered surface, it is round, k that contour line is selected from far near
=0；Ellipse, -1<k<0；Parabola, k=-1；Hyperbola, k<-1；
Then relative size further according to light source adjusts aspheric curvature c values；
Finally according to actual effect fine setting coefficient C2n, concrete numerical value not produce not larger interference to be advisable sum, but
Energy subrange is adjusted slightly size of population, C4-C20The physical meaning of this 9 coefficients is：Lower-degree coefficient regulation whole piece curve is curved
Curvature, higher order coefficient regulation local curve, is the smoothness of curve for adjusting corner, the light optically focused of Part I is existed
In first retainer.
In the centrosymmetric multinomial aspheric curve formula, take：
C=0.05；K=-0.8；When n takes 3, C6=2.5*10-7；When n takes 5, C10=2.3*10-12。
The inner side profile of the lens is centrosymmetric Bezier spline curve, is obtained using Quadratic Rational Bezier
Arrive, formula is as follows：
P in formula0、P2It is two end points of curve, P1It is the control point in the middle of curve, P (t) is the match point on curve, ω
It is control point P1Weight, t is independent variable, wherein：P0=(0,9.8), P1=(9.88,10.24), P2=(19,15), ω=
0.68；
In using the Quadratic Rational Bezier formula, the size first according to light source determines an end points P2's
Coordinate, then adjusts another end points P0Coordinate so that the Part I light of lens enters in set angle, last thin
Fine control control point P1And its weights omega, ω ∈ [0,1], the Part II light of lens is also reflexed to both by reflector
Determine in angle.
Beneficial effects of the present invention：
The present invention is only with a lens, it is necessary to the difficult point for solving has：If 1) continue to continue to use 24 ° of original reflectors, this
Invent "+24 ° of reflectors of lens " result should or 24 ° of rising angles；2) on the premise of ensureing that rising angle is constant, this
The hot spot of invention should be improved, and hot spot is uniform, does not have halation；3) central light strength can not be reduced；4) light efficiency can not be reduced；5)
While not changing original structure, lens can be fixed to former shot-light the inside.
The solution of the present invention solves above mentioned problem, can produce following technique effects：
1) scheme of lens+reflector of the invention compares existing reflector scheme, without reduction system effectiveness；
2) the solution of the present invention can greatly improve peak light intensity, about improve 30%；
3) control of the solution of the present invention to light is more accurate, most light is incident on effective lighting region,
Light pollution, dazzle are reduced, so that more energy-conservation；
4) the solution of the present invention can eliminate halation, its hot spot it is sharper keen, more suitable for accent light application；
5) the method more overall scientific for being used in lens design process of the invention, by clear theory analysis
The qualitative range in data is obtained, completing most complicated data using software as far as possible again calculates, and greatlys save design time；
6) the solution of the present invention increase only a lens and just improve hot spot effect, have powerful in structure versatility
Advantage, production can be quickly introduced；
7), compared with prior art because the change in structure is very small, resulting expense is also than relatively low for the present invention
Honest and clean, cost performance is high.
To further illustrate above-mentioned purpose of the invention, design feature and effect, the present invention is entered below with reference to accompanying drawing
Row is described in detail.
Brief description of the drawings
Fig. 1 is the optical texture schematic diagram of existing shot-light；
Fig. 2 is the light distribution map of shot-light shown in Fig. 1；
Fig. 3 is the optical texture schematic diagram of shot-light of the present invention；
Fig. 4 is the light distribution map of shot-light shown in Fig. 3；
Fig. 5 is the lens arrangement schematic diagram in Fig. 3；
Fig. 6 is the adjustment mode diagram of the Bezier that lens inner side contour line is used.
Specific embodiment
Specific embodiment of the invention is described in detail with reference to the accompanying drawing of embodiment.
The present invention is, in the case where shot-light optical texture shown in Fig. 1 is not changed, only to increase a lens and reach optimization light
The purpose of spot.
As shown in figure 3, removing the glass cover of existing shot-light in the solution of the present invention, increase a lens 36, the present invention is penetrated
As shown in figure 3, a radiator casing 31, there is an individual cavity its underpart for the optical texture of lamp, there is a platform at middle part, and top dissipates
Hot device fin is connected to platform；COB light source 32 is placed on platform central, and towards the cavity of bottom；COB supports 33 are pressed in COB
On light source 32, with fixed light source；It is reflector 34 below COB light source 32；Reflector 34 is below preceding decorative circle 35, reflector 34
Directly fit in preceding decorative circle 35；One lens 36 is clipped between reflector 34 and COB supports 33, and reflector 34 is buckled in lens
On 36.
The structure of lens 36 is as shown in figure 5, it is the bowl-type optically focused formed by lateral profile 51 and inner side profile 52
Lens, outboard wheel profile 51 is centrosymmetric multinomial aspheric curve, and inner side contour line 52 is Bezier spline curve.
The mentality of designing of lens 36：As shown in figure 4, the light that COB light source 32 sends is divided into two parts treatment, first
Lease making is directly shone within first retainer (within such as 24 °) after crossing the optically focused of lens 36, and Part II is by after the adjustment of lens 36
All beat on reflector 34, (within such as 24 °) within angle are then converged to by reflector 34 again.
The shape design process of whole lens 36 determines to complete (the lighttools light in lighttools optical softwares
Learn the optical system modeling software that software is developed by the U.S. Optical Research Associates (ORA) company).
The lateral profile 51 of lens is centrosymmetric multinomial aspheric curve, and this curve has easy to adjust, wheel
Exterior feature is smooth, refracted light can be with the advantage of uniform convergence, curve equation：
X is profile transverse axis parameter (independent variable) in formula, and y is profile longitudinal axis parameter, and c is aspherical curvature, and k is circular cone
Conic constant, C2nIt is polynomial coefficient.Coefficient c is positive number, and coefficient k is negative, coefficient C2nThe value in the range of real number, n=
2-10 simply represent a total of nine of this coefficient：C4、C6、C8、C10、C12、C14、C16、C18、C20If, C2nDo not count specifically
Value, acquiescence coefficient value is 0.This three classes specific span of coefficient determines according to actual conditions.Conic is selected first
Line constant k values：The general distance according to light source to cambered surface, it is circle (k=0), oval (- 1 that contour line may be selected from far near<k<
0), parabola (k=-1), hyperbola (k<-1)；Then relative size further according to light source adjusts aspheric curvature c values；
Finally according to actual effect fine setting coefficient C2n, generally all it is very small numerical value, concrete numerical value produces larger with not to sum
Interference is advisable, but energy subrange is adjusted slightly size of population, and the physical meaning of actually this 9 coefficients can be understood as：
Lower-degree coefficient adjusts whole piece embroidery, and higher order coefficient regulation local curve mainly adjusts the smoothness of curve of corner,
Its effect be ensure Part I light can optically focused within 24 °.These coefficients are suitably adjusted, can intuitively in software
In see the convergence angle of light.In the present embodiment, c=0.05, k=-0.8, C6=2.5*10-7(when n takes 3), C10=
2.3*10-12(when n takes 5).
The inner side profile 52 of lens is a centrosymmetric Bezier.Because Part II light is needed by three
Individual optical interface：Lens inner side profile, lens lateral profile, reflector inner surface, reflector inner surface and lens lateral profile
Above finalizing the design almost, lens inner side profile 52 preferably selects SPL to fine-tune the rising angle of light, Bei Sai
Your curve as SPL one kind, its regulative mode is better simply while can also take into account fine point of curve each several part
Cloth.Lens inner side profile employs Quadratic Rational Bezier and obtains in the present embodiment, and formula is as follows：
The following is the specific formula for calculation of formula above, the parametric equation of coordinate x, y.
P in formula0、P2It is two end points of curve, P1It is the control point in the middle of curve, P (t) is the match point on curve, ω
It is control point P1Weight, t is independent variable.During the sunykatuib analysis of Lighttools softwares, first according to the big of light source
One end points P of small determination2Coordinate, then adjust another end points P0Coordinate with cause lens Part I light enter
In set angle (within such as 24 °), last fine adjustment control point P1And its weights omega (ω ∈ [0,1]), to cause
The Part II light of lens is also reflexed in first retainer by reflector.As shown in fig. 6, Bezier is in lighttools
Regulative mode in optical software.In present case, the parameter of Bezier is：P0=(0,9.8), P1=(9.88,
10.24), P2=(19,15), ω=0.68.
In whole design process, the outboard wheel profile 51 and inner side contour line 52 of lens 36 to the rising angle of light all
Have an impact, so need first substantially to determine a parameter according to principles above, then according to analog result, slowly in a small range
Adjust the size of each parameter.It is so both to complete theory analysis, numerous and diverse calculating process also is completed using optical software, greatly
The big design time for saving optical lens.According to above parameter, the hot spot of shot-light does not have obvious halation, and all light all collect
In inside a hot spot, there is no a veiling glare outlet, hot spot centered on 24 ° of illumination of boundary illumination 48%, whole light
The uniformity of spot is significantly increased.The effective rate of utilization of light is improved, and the light within 24 degree accounts for 1/2nd of total light flux.
The shot-light central light strength of other structure of the present invention also improves 1/3rd.Practical application can be brighter than existing shot-light.
Those of ordinary skill in the art is it should be appreciated that the embodiment of the above is intended merely to illustrate of the invention
Purpose, and limitation of the invention is not used as, as long as in essential scope of the invention, the change to embodiment described above
Change, modification will all fall in the range of claim of the invention.
Claims (6)
1. a kind of shot-light with effectively luminous energy high, it is characterised in that：
There is individual cavity one radiator casing (31), its underpart, and there is a platform at middle part, and the heat radiator fin on top is connected to put down
Platform；COB light source (32) is placed on platform central, and towards the cavity of bottom；COB supports (33) are pressed in COB light source (32)；Institute
State below COB light source (32) is reflector (34)；The reflector (34) is below preceding decorative circle (35), reflector (34) laminating
Onto preceding decorative circle (35)；One lens (36) is clipped between reflector (34) and COB supports (33), and reflector (34) is buckled in
On mirror (36)；
The lens (36) are a bowl-type collector lenses formed by lateral profile (51) and inner side profile (52)；The outside
Contour line (51) is centrosymmetric multinomial aspheric curve, and the inner side contour line (52) is centrosymmetric Bezier sample
Bar curve.
2. there is the shot-light of effectively luminous energy high as claimed in claim 1, it is characterised in that：
The outboard wheel profile (51) of the lens (36) is centrosymmetric multinomial aspheric curve and inner side profile (52)
It is centrosymmetric Bezier spline curve, curve shape is determined using lighttools optical softwares.
3. there is the shot-light of effectively luminous energy high as claimed in claim 1 or 2, it is characterised in that：
The outboard wheel profile (51) of the lens (36) is centrosymmetric multinomial aspheric curve, and its curve equation is：
X is profile transverse axis parameter, independent variable in formula；Y is profile longitudinal axis parameter；C is aspherical curvature, and k is conic section
Constant, C2nIt is polynomial coefficient；Coefficient c is positive number, and coefficient k is negative, coefficient C2nThe value in the range of real number, n=2-10
Simply represent a total of nine of this coefficient：C4、C6、C8、C10、C12、C14、C16、C18、C20If, C2nThere is no concrete numerical value, write from memory
It is 0 to recognize coefficient value；This three classes specific span of coefficient is determined according to situations below：
Conic section constant k values are selected first：According to the distance of light source to cambered surface, it is round, k=0 that contour line is selected from far near；
Ellipse, -1<k<0；Parabola, k=-1；Hyperbola, k<-1；
Then relative size further according to light source adjusts aspheric curvature c values；
Finally according to actual effect fine setting coefficient C2n, concrete numerical value is not to produce larger interference to be advisable sum, but energy office
Portion's scope is adjusted slightly size of population, C4-C20The physical meaning of this 9 coefficients is：Lower-degree coefficient adjusts whole piece embroidery,
Higher order coefficient adjusts local curve, is the smoothness of curve for adjusting corner, enables the light optically focused of Part I set
In angle.
4. there is the shot-light of effectively luminous energy high as claimed in claim 3, it is characterised in that：
In the centrosymmetric multinomial aspheric curve formula, take：
C=0.05；K=-0.8；When n takes 3, C6=2.5*10-7；When n takes 5, C10=2.3*10-12。
5. there is the shot-light of effectively luminous energy high as claimed in claim 1 or 2, it is characterised in that：
The inner side profile (52) of the lens (36) is centrosymmetric Bezier spline curve, bent using Quadratic Rational Bezier
Line is obtained, and formula is as follows：
P in formula0、P2It is two end points of curve, P1It is the control point in the middle of curve, P (t) is the match point on curve, and ω is control
System point P1Weight, t is independent variable, wherein：P0=(0,9.8), P1=(9.88,10.24), P2=(19,15), ω=0.68.
6. there is the shot-light of effectively luminous energy high as claimed in claim 5, it is characterised in that：
In using the Quadratic Rational Bezier formula, the size first according to light source determines an end points P2Coordinate,
Then another end points P is adjusted0Coordinate so that the Part I light of lens enters in set angle, last fine tune
Whole control point P1And its weights omega, ω ∈ [0,1], the Part II light of lens is also reflexed to set angle by reflector
In degree.
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Cited By (3)
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| CN110985925A (en) * | 2018-10-02 | 2020-04-10 | ３Ｓ股份有限公司 | Optical unit and LED illuminating lamp using same |
| CN111810874A (en) * | 2020-07-31 | 2020-10-23 | 特能热交换科技（中山）有限公司 | Outdoor projection lamp |
| CN114234064A (en) * | 2021-11-29 | 2022-03-25 | 青岛易来智能科技股份有限公司 | Light distribution element design method, light distribution element and lighting device |
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| CN110985925A (en) * | 2018-10-02 | 2020-04-10 | ３Ｓ股份有限公司 | Optical unit and LED illuminating lamp using same |
| CN111810874A (en) * | 2020-07-31 | 2020-10-23 | 特能热交换科技（中山）有限公司 | Outdoor projection lamp |
| CN114234064A (en) * | 2021-11-29 | 2022-03-25 | 青岛易来智能科技股份有限公司 | Light distribution element design method, light distribution element and lighting device |
| CN114234064B (en) * | 2021-11-29 | 2024-06-11 | 青岛易来智能科技股份有限公司 | Light distribution element design method, light distribution element and lighting device |
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