CN104302973B - For the lens of wide lateral angles distribution - Google Patents
For the lens of wide lateral angles distribution Download PDFInfo
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- CN104302973B CN104302973B CN201380024053.0A CN201380024053A CN104302973B CN 104302973 B CN104302973 B CN 104302973B CN 201380024053 A CN201380024053 A CN 201380024053A CN 104302973 B CN104302973 B CN 104302973B
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- lens
- surface portion
- light
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- lateral
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- 238000009826 distribution Methods 0.000 title claims abstract description 20
- 230000003287 optical effect Effects 0.000 claims abstract description 8
- 238000005286 illumination Methods 0.000 claims description 23
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000009827 uniform distribution Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 239000000758 substrate Substances 0.000 abstract description 15
- 238000005538 encapsulation Methods 0.000 description 13
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 7
- 241001465382 Physalis alkekengi Species 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 210000004209 hair Anatomy 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/08—Refractors for light sources producing an asymmetric light distribution
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Planar Illumination Modules (AREA)
Abstract
A kind of lens (10), for the wide lateral angles distribution of the light of the LED light source (20) on plate and restriction axis (6).The lens include the adjacent substrate (11) of plate of the axis, interior optical receiving surface (30), intermediate surface (40) are separated and surround with the between centers and are arranged to refraction from the inner surface and the outer output surface (50) of the light of intermediate surface reception.The substrate is formed to the opening in the optical receiver cavity limited by the inner surface, and the inner surface includes：(a) from the substantially flat front surface portion of the opening extension and rear surface part (31,32), and (b) end surface portion (33), chamber described in span exhibition in the front surface and rear surface and including previous paragraphs and back segment 35,36), the previous paragraphs and back segment (35,36) extend internally respectively from the front surface portion and rear surface part, and each is angled compared with another.The intermediate surface is set and is configured to reflect from the light that the inner surface receives towards the outer output surface.
Description
Technical field
The present invention generally relates to field of illumination systems, more particularly, to for using LED light source with predetermined light
The device that intensity mode is illuminated region.
Background technology
In the presence of the needs for low cost and the lighting device of energy efficient.LED (light emitting diode) provides energy efficient
Light source, over time, the progress in LED technology even provides higher efficiency.Some typical cases of lighting system should
With being that road surface and parking lot illuminate, wherein presence such as requires light most effective and is evenly distributed in wide region to be illuminated
On.In the application for illumination information plate or billboard, symbol (including traffic signals etc.) and facade illumination
In, there are the needs to being illuminated with possible most wide angle, with the attraction pair while using the lamps and lanterns of minimum number
The special attention in the wide region to be illuminated.
Some effort have been carried out, LED light is directed into the LED lens of desired light distribution to develop.It is such
Some in lens are difficult to manufacture, and expensive, and which increase the overall costs of the LED illumination using the lens.However, so
Lens have shortcoming in terms of the light distribution needed for the appropriate illumination that wide target surface is provided.
It is very useful that the lighting device for generating and improving, which is provided, for the desired light distribution of the illumination of wide target surface
's.Such lighting device has high efficiency, and has the improved distributing homogeneity with light across illumination region, with wide
The useful output of angle and emission maximum light in a desired direction.
The content of the invention
One aspect of the present invention is the saturating of the improvement of the distribution and restriction axis for the light of the LED light source on plate
Mirror.
In certain embodiments, which includes：Inner surface, intermediate surface and refraction is arranged to from the interior table
The outer output surface for the light that face and intermediate surface receive.
The inner surface limits optical receiver cavity.In certain embodiments, the inner surface includes substantially flat front surface part
Divide the end surface portion of chamber described in the span exhibition with rear surface part and in the front surface portion and rear face portion point.Institute
Each stated in front surface portion and rear surface part extends from opening, terminates at the end surface portion.
The inner surface can also include pair of substantially flat lateral face portion, the lateral face portion each from
The opening is extended between the front surface portion and rear face portion point.In certain embodiments, the interior front surface portion,
Interior rear surface part and interior lateral face portion are substantially parallel with the axis.
In certain embodiments, the interior front surface portion and interior rear surface part substantially with the interior lateral face portion
It is orthogonal.In some embodiments, the chamber opening is essentially rectangular.As herein with regard to " the essentially square of term used in chamber opening
Shape " means：(1) the chamber opening has the transversal dimensions (cross- on four sides and every one side of (2) described chamber opening
Dimension at least about 1/3rd) are straight, alternatively, longer sides (if there is a pair of of longer sides) is transversal
At least about 1/3rd of size are substantially straight.(it should be appreciated that " square " is the subset of " rectangle ".) it should be noted that
The fillet of the inner wall of the fillet and surrounding of lumen open and the in a substantial way distribution of influence light to the greatest extent, but such chamfering
Benefit is provided during the manufacture of the lens of the present invention.Especially, the minimum of the acutance of corner portion promotes the present invention's
The accurate molding of lens.
In certain embodiments, the end surface portion includes leading portion and back segment, each all from corresponding front surface portion
It extends internally with rear surface part.Each in described section can be angled compared with another.In certain embodiments, institute
It states back segment from the rear surface part towards the direction of the plate to extend, and in certain embodiments, the leading portion is from described
Front surface portion with towards the direction of the plate extend.
In the leading portion and back segment of the end surface portion each can from opposite interior lateral face portion to
Inside extend to the position for being gradually distance from the plate.Compared to the leading portion, the back segment extends to the position further from the plate
It puts.
In certain embodiments, each in the leading portion and back segment include substantially recessed center section and with the base
Pair of the substantially opposite convex lateral part of this convex center section adjoining.The end surface portion can be from the interior transverse direction
Surface portion extends.In certain embodiments, the back segment from the rear surface part with towards the direction of the plate extend, and
In certain embodiments, the leading portion from the front surface portion with towards the direction of the plate extend.
The intermediate surface is set and is configured to will be from the light that the front and rear inner surface portion receives towards described
Outer output surface reflection.In certain embodiments, the intermediate surface includes front and rear reflective surface portions, is set and matches somebody with somebody
It is set to the light for reflecting received from the front and rear inner surface portion respectively.The front and rear reflective surface portions are respectively with before described
With extending radially out away from the axis for rear inner surface portion.The front-reflection surface portion can have preceding curvature to match somebody with somebody
It puts, the rear curvature for being different from the back reflection surface portion configures.It should be appreciated that term " curvature " refers to three-dimensional bending table
Face.The front and rear reflective surface portions each can be that double transversal is symmetrical (bilaterally symmetric).
In certain embodiments, compared to the front-reflection surface portion, the back reflection surface portion is terminated in away from described
At the distance of plate bigger, and in certain embodiments, compared to the front-reflection surface portion, the back reflection surface portion terminates
At the distance away from the axis bigger.
The intermediate surface can also include pair of intermediate lateral surface portion, each intermediate lateral surface portion and institute
Reflective surface portions adjoining before and after stating so that the intermediate surface extends continuously around the inner surface.At some so
Embodiment in, the front and rear reflective surface portions are separately positioned on away from as the plate at distance, described apart from edge
The front and back as maximum, and is continuously decreased towards the lateral face portion.The intermediate lateral surface portion can
Not receive the light from the inner surface substantially.
The intermediate lateral surface portion can have essentially identical cross curvature, be different from the front and rear curvature
Configuration.The another aspect of the corner of the circle of the chamber opening and the basal edge of the intermediate surface is that such chamfering carries
The smooth transition from cross curvature to the front and rear curvature of the intermediate surface is supplied.
In certain embodiments, the outer output surface is included with the axis into horizontal main output surface part.One
In a little such embodiments, the main output surface part limits pair of substantially convex transverse part (lateral sector),
This is to there is the spill of front to back between transverse part, for laterally reflecting the lateral light received from the inner surface away from described
Axis, in order to which wide lateral angles are distributed.The main output surface part reflect with being arranged to forward and backward from
The light that the interior front surface portion and interior rear face portion tap are received is away from the axis, in order to the uniform distribution of light.For
The further uniform distribution for promoting light, the main output surface can be configured as will be from the front and rear reflection table
The anaclasis that face tap is received is to the axis.
In certain embodiments, the outer output surface includes outer lateral face portion, from the main output surface portion
Divide and extend towards the plate.The outer lateral face portion can be configured as will be from the light that the inner surface receives towards described
Axis reflects, in order to the uniformity of light illumination mode.The outer lateral face portion can be substantially parallel with the axis.
In certain embodiments, the outer lateral face portion is by from the main output surface part and the intermediate surface
The peripheral wall extended towards the plate limits.In some such embodiments, the outer lateral face portion have with institute
State the basic right cylindrical shape in the almost circular section intercepted in the parallel plane of plate.
Some versions of the lens of the present invention can include from the peripheral wall extend outwardly away from the axis to export-oriented flange.
In certain embodiments, lens of the invention are that double transversal is symmetrical on front to back direction.
Another aspect of the present invention relates to a kind of lighting device, including the multiple LED light sources being spaced apart along circuit board,
Each described LED light source limits an axis.The lighting device includes multiple lens according to the present invention, each lens is in institute
It states on corresponding one in LED light source.
In certain embodiments, the lighting device includes lens (lensing) component of single-piece, including passing through flange
Multiple lens components of part interconnection.In such embodiments, each in the lens component includes the multiple
One in mirror.
When the lens installation of the present invention is used for the illumination of surface (such as, traffic sign), the internal end surface part
Configuration with reference to the configuration of the main output surface promote for along illumination surface longer dimension extension laterally away from
From guide light.In such an application, the combination of the configuration of reflective surface portions and main output surface makes front to back light spread change
It is narrow, provide desired highest luminance with the entirety of the shorter dimension substantially along illumination surface.This generation meets for symbol
Or the long and narrow light illumination mode of the bright needs of licence plate, however can be used for the alien invasion of illumination building and other surfaces.
The light source can include at least one light emitting diode (LED).Such light source can be LED emitter,
It can include being directly installed on the pedestal on plate (for example, circuit board) or with wherein LED (one or more) onboard
(submount) single led (or LED groups of tight spacing) of the form installation of the LED encapsulation piece on.The LED emitter
It can include the things for being jointly referred to as main lens on LED.In certain embodiments, lens of the invention are located in
So-called attachment lens on the main lens.In some other embodiments, lens according to the present invention are directly in LED
On main lens.
As term means the surface and hair " into transverse direction " with reference to used in main output surface compared with transmitter axis herein
Emitter axis intersects.
As herein refer to the device of the invention each several part used in, term " upward ", " upward ", " on ", " to
Under ", " down ", " under ", " on ", " top ", " bottom " and other similar terms assume that lamps and lanterns be in it and usually use position,
Rather than limit the invention to any specific orientation.
In the explanation of the present invention, including in following claim, term " comprising ", "comprising" and " having " are (each all
Can have its various forms) and term " possessing " (" with ") is each shall be construed as being open term rather than limit
The term of property processed.
Description of the drawings
Fig. 1 is the transparent perspective view of one embodiment of the lens of the present invention, and the lens are shown from light output side.
Fig. 2 is the transparent perspective view for the lens that Fig. 1 is shown from plate side.
Fig. 3 is the transparent output side plan view of the embodiment of the lens of Fig. 1.
Fig. 4 is the transparent panel side plan view of the embodiment of the lens of Fig. 1.
Fig. 5 is the transparent horizontal front view of the embodiment of the lens of Fig. 1.
Fig. 6 is the transparent anterior elevational view of the embodiment of the lens of Fig. 1.
Fig. 7 is the transparent rear front view of the embodiment of the lens of Fig. 1.
Fig. 8 is the opaque perspective view for the lens that Fig. 1 is shown from light output side.
Fig. 9 is the opaque perspective view for the lens that Fig. 8 is shown from plate side.
Figure 10 is the opaque output side plan view of the lens of Fig. 8.
Figure 11 is the impermeable isotropic disk side plan view of the lens of Fig. 8.
Figure 12 is the opaque horizontal front view of the lens of Fig. 8.
Figure 13 is the opaque anterior elevational view of the lens of Fig. 8.
Figure 14 is the opaque rear front view of the lens of Fig. 8.
Figure 15 is the sectional view along the side of the lens of the Fig. 1 intercepted of the section 15-15 shown in Fig. 3 to side.
Figure 16 is the front to back sectional view along the lens of the Fig. 1 intercepted of the section 16-16 shown in Fig. 4.
Figure 17 is the another side of the lateral aspects for the near field light distribution for schematically showing lens to side cross-sectional views.
Figure 18 is ray (light) trace for schematically showing far field lateral light distribution as shown in Figure 17.
Figure 19 is that another front to back of the aspect for the near field forward and backward light distribution for schematically showing lens is cut
Face figure.
Figure 20 is the ray for the far field forward and backward light distribution for schematically showing lens as shown in Figure 19
Trace.
Figure 21 is the front view of three-dimensional polarization intensity (polar intensity) distribution of lens according to the present invention.
Figure 22 is the side view of the three-dimensional polarization intensity distribution of lens according to the present invention.
Figure 23 is the transparent perspective view of another embodiment of the lens of Fig. 1, and the lens are shown from rear side.
Figure 24 is the two-dimentional top view ISO curves of the illumination intensity on illumination surface by lens according to the present invention
Figure.
The photographic brightness that Figure 25 is 14'x 48' is presented.
Figure 26 is the schematical illumination view of the board of 14'x 48'.
Figure 27 is an exemplary enlarged perspective of LED encapsulation piece, be included in eight LED on pedestal array and
The asymmetric main lens of over-molded (overmold) on LED array.
Figure 28 is another exemplary enlarged perspective of LED encapsulation piece, is included in the array of 48 LED on pedestal
And it is over molded on the asymmetric main lens on LED array.
Figure 29 is the another exemplary enlarged perspective of LED encapsulation piece, has the single led and mistake mould on pedestal
Make the hemispherical main lens on LED.
Figure 30 is the enlarged side view of the LED encapsulation piece of Figure 29.
Figure 31 is the amplification vertical view of the LED encapsulation piece of Figure 29.
Figure 32 is the amplification vertical view of the LED encapsulation piece of another exemplary, and the LED encapsulation piece is included in four on pedestal
The array of LED and the hemispherical main lens being over molded on LED array so that the axis of main lens deviates the axis of LED array.
Figure 33 be the side of one embodiment of lighting device to side cross-sectional views, the lighting device is included in multiple light
Multiple lens on source, and schematically show the lateral aspects of the near field light distribution of the lighting device.
Figure 34 be the side of another embodiment of lighting device to side cross-sectional views, the lighting device includes being integrated with more
The single-piece lensing elements of a lens according to the present invention.
Specific embodiment
Fig. 1-2 6 shows all various aspects of the exemplary embodiment of lens 10 according to the present invention.Lens 10 are configured to use
In the light for guiding the light source 20 on plate, and limit axis 6.Light source can be LED emitter, including being mounted directly onboard
Or in the form of the LED encapsulation piece on the pedestals of wherein LED (one or more) onboard install, it is single led (or
The LED groups of tight spacing).Main lens can be arranged on LED.In some embodiments, lens 10 are located in described
Attachment lens on main lens, as seen in Figure 17 and 19.
Fig. 1-7,15 and 17 show lens 10, including：It is spaced apart with axis 6 and around the substrate adjacent with plate of axis 6
11st, inner surface 30, intermediate surface 40 and outer output surface 50.As seen in Figure 17 and 19, outer output surface 50 is configured to use
In the light that refraction is received from inner surface 30 and intermediate surface 40.As most preferably seen in Fig. 2,9,15 and 16,11 shape of substrate
Into to the opening 12 in the optical receiver cavity 13 limited by inner surface 30.
Fig. 3-7 shows the symmetrical lens 10 of double transversal in the longitudinal direction.
As most preferably seen in Fig. 1,2,9,16 and 23, inner surface 30 includes substantially flat front surface portion with after
Surface portion 31 and 32 and front surface portion and rear surface part 31 and 32 span exhibition chamber 13 end surface portion 33.Figure
2 and 23 each best illustrated in front surface portion and rear surface part 31 and 32 terminate in end table from the extension of opening 12
At face part 33.
As seen in Fig. 1,2,5-7 and 23, inner surface 30 further includes pair of substantially flat lateral face portion 34, each
Lateral face portion 34 is extended in from opening 12 between front surface portion and rear surface part 31 and 32.Fig. 5-7,15-17 and 19
It best illustrates, it is each substantially parallel with axis 6.Fig. 1-4 and 23 shows interior front surface portion and rear surface part 31
It is substantially orthogonal with interior lateral face portion 34 with 32.
Fig. 4 and 11 shows the chamber opening 12 of substantial rectangular, has interior front surface portion, interior rear surface part and interior horizontal stroke
It is each respectively from an extension in four sides of opening 12 to surface portion 31,32 and 34.The corner of the fillet of opening 12
120 and chamber 13 fillet corner 130 it is excellent by the way that the accurate molding of lens surface is promoted to provide during the manufacture of lens 10
Point.
As most preferably seen from Fig. 1,2,16 and 23, end surface portion 33 includes leading portion and back segment 35 and 36, each
It extends internally respectively from front surface portion and rear surface part 31 and 32.Back segment 36 is from rear surface part 32 towards substrate 11
Direction extends, and leading portion 35 extends from front surface portion 31 towards the direction of substrate 11.
Fig. 1,6,7 and 23 show end surface portion 33 leading portion and back segment 35 and 36 each from opposite interior transverse direction
Surface portion 34, which extends inward into, to be gradually distance from from the position of substrate 11.Compared to leading portion 35, back segment 36 is extended to further from substrate
11 position, as most preferably seen in figure 16.Each in section 35 and 36 is at an angle of compared with another, sees Figure 16 and 23.
Such angled configuration is provided by the way that light is made to spread the hotspot location away from means for two very close shafts 6 around about 30 degree of angles of axis 6
The initial distribution of the light of the transmitting of interior high concentration degree, and pass through and anaclasis is eliminated into edge away from the hotspot location two tightly around axis 6
The so-called hot spot of axis 6, as shown in figure 19.
As most preferably seen in Fig. 1,2,6,7 and 15, leading portion 35 includes substantially recessed center section 351 and opposite
Substantially pair of the lateral part 352 of the center section 351 of the convex and adjacent basic fovea superior.Back segment 36 further includes substantially
Recessed center section 361 and the lateral part of the opposite substantially convex and adjacent substantially convex center section 361
362 pair.The recessed shape of the center section 351 and 361 of end surface portion 33 is provided around about 50 degree of angles of transmitter axis 6
The deflection dispersion of the light of interior transmitting is beneficial to the wide light distribution of wide lateral angle light illumination mode (in fig. 17 so as to provide
It schematically shows).The convex shape of lateral part 352 and 362 provide along close to the light that the angle of plate 21 emits towards
The inceptive direction of useful angle between plate 21 and axis 6.
Figure 19 also shows intermediate surface 40 and is set and is configured to what is received from front and rear inner surface portion 32 and 33
Light is towards the total internal reflection (TIR) of outer output surface 50.As most preferably seen in Figure 16,19 and 23, intermediate surface includes
Front and rear reflective surface portions 41 and 42.Reflective surface portions 41 and 42 are set and are configured to distinguish before and after Figure 19 is shown
Light is received from front and rear inner surface portion 31 and 32, and passes through TIR by the light reflection towards outer output surface 50.Such as in Fig. 2,9
With 23 in most preferably see, front and rear reflective surface portions 41 and 42 respectively with the radial direction of front and rear inner surface portion 31 and 32 to
Outer mode extends outwardly away from axis 6 from substrate 11.As in Fig. 5,16 and 23 it is further seen that, front-reflection surface portion 41 has
Preceding curvature configuration 410 is different from the rear curvature configuration 420 of back reflection surface portion 42.Fig. 4,6,7 and 11 show this it is preceding and
Back reflection surface portion 41 and 42 is that double transversal is symmetrical.
As shown in Fig. 5,6,16,19 and 23, compared to front-reflection surface portion 41, back reflection surface portion 42 terminates in
At distance 43 away from 11 bigger of substrate.As most preferably seen in figure 16, back reflection surface portion 42 also terminates in more anti-than preceding
Reflective surface part 41 is at the big distance 442 of the distance 441 that axis 6 terminates.
Fig. 2,9,11 and 15 show that intermediate surface 40 further includes pair of intermediate lateral surface portion 45, intermediate lateral surface
Reflective surface portions 41 and 42 before and after part 45 each abuts so that intermediate surface 40 is extended continuously around inner surface 30.
Front and rear reflective surface portions 41 and 42 are in away from a certain distance from substrate 11, and the distance is respectively along front and back 1 and 2
Maximum, and continuously decreased towards lateral face portion 45.Figure 17, which is shown, to be set and is configured to not receive substantially from interior
The intermediate lateral surface portion 45 of the light on surface 30.
As most preferably seen in Figure 11 and 15, intermediate lateral surface portion 45 has substantially consistent cross curvature
450, which is different from the configuration of front and rear curvature 410 and 420.Fig. 2,4,9 and 11 also show intermediate surface 40
The fillet corner 140 at substrate edge 14 provide front and rear curvature 410 and 420 from cross curvature 450 to intermediate surface 40
Smooth conversion.
Fig. 1,5-8,13-17,19 and 23 show outer output surface 50, including the main output surface with axis 6 into transverse direction
Part 51.As being best shown in Fig. 6,7,13-15,19 and 23, main output surface part 51 limits substantially convex transverse direction
Pair in portion 52, at this to there is the spill 53 of front to back between transverse part 52, for the horizontal anaclasis that will be received from inner surface 30
Axis 6 is further laterally away from, as seen in Figure 17, to promote the light distribution of wide lateral angles, as shown in Figure 18 and 21.
Figure 19 shows main output surface part 51, and being arranged to will be from interior front surface portion and interior rear surface part
The 31 and 32 light forward and backward received are reflected further away from axis 6, the uniformity of light to be promoted to be distributed, in Figure 20 and 22
Finding.
Be also shown from Figure 19, in order to further promote light uniformity be distributed, also by main output surface 51 be configured to by
From the anaclasis that preceding back reflection surface portion 41 and 42 receives to axis 6.
It is also shown from Fig. 1,5-8,15-17,19 and 23, outer output surface 50 includes outer lateral face portion 54, from master
Output surface part 51 extends towards substrate 11.Figure 17 shows outer lateral face portion 54, and being arranged to will be from interior table
The anaclasis that face 30 receives is to axis 6, to promote the uniformity of light illumination mode, as shown in figs. 25 and 26.In Fig. 5-7 and 15-17
Finding, outer lateral face portion 54 are substantially parallel with axis 6.
Fig. 5,15-17 and 19 show, outer lateral face portion 54 from from main output surface part 51 and intermediate surface 40 to
The peripheral wall 15 for the extension of plate 21 limits.As seen in Fig. 3 and 10, outer lateral face portion 54 has parallel with substrate 11
The basic right cylindrical shape in the almost circular section intercepted in plane.It should be appreciated that many other configurations of peripheral wall are
It is possible, including (without limitation) by be not straight line mobile generation surface.In some examples, outer lateral surfaces
There can be various different annular shapes, being included in along its different position has the shape of different cross section configuration or compared with hair
The shape that emitter-base bandgap grading axis is at an angle of.
Fig. 1-17 also shows the lens 10 to outward flange 16 including extending outwardly away from axis 16 from peripheral wall 15.To outward flange
16 are shown as with octagon periphery, the installation of lens during this is assembled in favor of illuminating equipment.Flange 16 (such as Fig. 3,4,10
With 11 in be best shown) also there is lens type mark mark 18 and locator label 17, locator label 17 indicates LED
Lens position in array module.1 He before the simply light distribution shown in Figure 22 is orientated between mark 18 and label 17
Next 2.These marks preferably robot device is readable, and the lens during being assembled for correct for illumination equipment are placed and taken
To.Figure 15 and 16 shows the plane 110 that substrate 11 is extended beyond in the direction opposite with light radiation compared with transmitting pole axis 6
Flange 15.Figure 17 and 19 shows that such spacing allows for plane 110 to be arranged on the level identical with the LED of light source 20, with
In the light that transmitting is most effectively captured by inner surface 30.
Another aspect of the present invention relates to a kind of lighting device, including the multiple LED light sources being spaced apart along circuit board,
Each described LED light source limits an axis.The lighting device includes multiple lens according to the present invention, each lens is in institute
It states on corresponding one in LED light source.
In certain embodiments, the lighting device includes single-piece lenticular component, including being interconnected by flange section
Multiple lens components.In such embodiments, each in the lens component includes one in the multiple lens
It is a.
It should be noted that the lens 10 of the present invention have configuration described above, and the configuration allows in one-piece molded
Middle moulded lens 10.In other words, lens configuration preferably allows for being easy to from mould remove lens without separating moulded parts, as
Situation with some lens requirement more than one piece molding is such.The lens of the present invention can simply be gone out from die drawing.
Figure 33 and 34 shows another aspect of the present invention, is related to multiple LED including being spaced apart along circuit board 21A
The lighting device 100 of light source 20.Lighting device 100 includes the lens 10 of multiple present invention, each phase in LED light source 20
On one answered.
Figure 34 shows lighting device 100A, and including single-piece lensing elements 101, lensing elements 101 include passing through
Multiple lens components 102 that flange section 103 interconnects.Each lens component 102 includes one in the multiple lens 10.
Figure 25 and 26, which is schematically shown, is used in lamp of the installation for the illumination of surface 3 (such as, traffic sign)
Lens 10 in tool.These are illustrated, and light is directed along the lateral separation of the extension of the longer dimension on illumination surface 3, so that
Obtaining only needs to install minimal number of lamps and lanterns.Figure 26 illustrates only two lamps and lanterns of illumination whole surface 3.
In the lamps and lanterns using multiple transmitters, multiple LED or LED array can be set directly on public base,
It is relation spaced apart between LED or LED array.Such LED emitter is sometimes referred to as chip on board type LED.
In some other embodiments, each and each floor installation on pedestal is on circuit boards.As some
In embodiment, each LED or LED array can be by over-molded together with corresponding main lens.Lens 10 according to the present invention
The main lens that can be formed on corresponding one in LED or LED array.In some other embodiments, multiple hairs
Bright lens 10 are formed in the attachment lens on a corresponding main lens.Can will be more in some such embodiments
A lens 10 are molded as single-piece, can have the single flange of each in the multiple lens 10, in Figure 34
Finding.
Figure 27-32 shows light source 20, including at least one light emitting diode (LED) 22.Light source 20 can be LED
The optical transmitting set of 23 form of packaging part, LED encapsulation piece 23 have the main lens 24 at least one LED 22.At this
In the embodiment of sample, lens 10 are located in the attachment lens on main lens 24.Optical transmitting set 20 can be shown in Figure 29-31
The type gone out, Figure 29-31 show LED encapsulation piece 23D, have on base plate 26 single led 22 and LED 22 it
On coaxially over-molded hemispherical main lens 24D on base plate 26.
Figure 27 and 28 shows exemplary L ED packaging part 23A and 23B, each is included on the region 25 of LED fillings
The array of LED 22, has the aspect ratio more than 1, and main lens 24 is over molded on the region 25 of LED fillings in pedestal 26
On.As shown in Figure 28, which can include the LED22 of the light of the different wave length of several transmitting different colours, such as, including
Red LED and green light or other color of light are to realize nature white light.Optical transmitting set such as LED encapsulation piece 23A and 23B type exists
In the application for the Serial No. 13/441,558 that on April 6th, 2012 submits and in the Serial No. submitted on April 6th, 2012
It is described in detail in 13/441,620 application.The content of two applications is integrally incorporated herein by quoting.
Figure 27,28 and 32, which are shown, to be configured as in forward direction 1 (that is, towards front 1) the refraction LED light emitted
The version of LED light transmitter 20.In each LED encapsulation piece 23A, 23B and 23C, each LED array limits emitter
Axis.Figure 27 and 28 shows the main lens 24A for being configured to the preceding light to refraction LED transmittings.Figure 32, which is shown, to be had and transmitting
The hemispherical main lens 24C for the center line 240 that pole axis deviates.It should be appreciated that for higher efficiency, LED emitter 20 can be with
Deviate transmitting pole axis and the main lens being also formed for the light that LED emits towards the refraction of preferential side 2 with its center line.
In Figure 27 and 28, main lens 24A is shown as asymmetrical.
Although the present invention has been described in connection with the specified embodiments principle, it should be appreciated that these explanation only conducts
The scope that example is not intended to be limiting of the invention.
Claims (30)
1. a kind of distribution of the light of LED light source on plate simultaneously limits the lens of axis, the lens include：
Inner surface limits optical receiver cavity, has the opening for limiting base plane, and the inner surface is included from the opening extension
To the substantially flat front surface portion of end surface portion and rear surface part, the end surface portion is in the front surface and rear table
Chamber described in the span exhibition in face, and including respectively from the front surface portion and rear surface the part inwardly base plane
Each leading portion and back segment of extension, each is angled compared with another；
Outer output surface is arranged to the light that refraction is received from the inner surface；And
Intermediate surface is set and is configured to reflect the light received from the inner surface towards outer output surface.
2. lens as described in claim 1, wherein the back segment prolongs from the rear surface part towards the direction of the plate
It stretches.
3. lens as claimed in claim 2, wherein the leading portion prolongs from the front surface portion towards the direction of the plate
It stretches.
4. lens as described in claim 1, wherein the inner surface further includes pair of substantially flat lateral face portion, it is described
Lateral face portion each extended in from the opening point between the front surface portion and rear face portion.
5. lens as claimed in claim 4, wherein the interior front surface portion, interior rear surface part and interior lateral surfaces portion
Divide substantially parallel with the axis.
6. lens as claimed in claim 5, wherein the interior front surface portion and interior rear surface part substantially with the interior horizontal stroke
It is orthogonal to surface portion.
7. lens as claimed in claim 4, wherein each slave phase in the leading portion and back segment of the end surface portion
Anti- interior lateral face portion extends inward into the position for being gradually distance from the plate.
8. lens as claimed in claim 7, wherein compared to the leading portion, the back segment extends to the position further from the plate
It puts.
9. lens as claimed in claim 7, wherein each in the leading portion and back segment includes cutting from side to side
Face figure is seen as substantially recessed center section and the sectional view from side to side is seen as substantially convex opposite lateral part
It is right, each in the lateral part from one in interior lateral face portion extension and with the substantially recessed centre
Part is adjacent.
10. lens as described in claim 1, wherein the back segment from front to back sectional view be seen as it is substantially flat.
11. lens as claimed in claim 10, wherein the leading portion from front to back sectional view be seen as it is substantially flat.
12. lens as claimed in claim 9, wherein the intermediate surface includes front-reflection surface portion and back reflection surface element
Point, it is set and is configured to reflect the light from the preceding inner surface portion and the reception of rear inner surface portion respectively.
13. lens as claimed in claim 12, the front-reflection surface portion and back reflection surface portion are respectively from the base
Baseplane is extended radially out with the preceding inner surface portion and rear inner surface portion away from the axis.
14. lens as claimed in claim 13 wherein the front-reflection surface portion is configured with preceding curvature, are different from institute
State the rear curvature configuration of back reflection surface portion.
15. lens as claimed in claim 14, wherein the front-reflection surface portion and back reflection surface portion are each
It is that double transversal is symmetrical.
16. lens as claimed in claim 14, wherein compared to the front-reflection surface portion, the back reflection surface portion end
Only at the distance away from the plate bigger.
17. lens as claimed in claim 16, wherein compared to the front-reflection surface portion, the back reflection surface portion end
Only at the distance away from the axis bigger.
18. lens as claimed in claim 14, wherein the intermediate surface further includes pair of intermediate lateral surface portion, it is described
Intermediate lateral surface portion each abutted with back reflection surface portion with the front-reflection surface portion so that the middle table
Face extends continuously around the inner surface, and the intermediate lateral surface portion does not receive the light from the inner surface substantially.
19. lens as claimed in claim 18, wherein the intermediate lateral surface portion has essentially identical cross curvature,
The cross curvature is different from the configuration of the preceding curvature and rear curvature.
20. lens as described in claim 1, wherein the outer output surface includes main output surface part, with the axis
Into transverse direction, and pair of substantially convex transverse part is limited, the spill for having front to back between them, for that will be connect from the inner surface
The lateral light of receipts is laterally reflected away from the axis, in order to which wide lateral angles are distributed.
21. lens as claimed in claim 20, wherein the main output surface part is rolled over being arranged to forward and backward
It penetrates from the light of the interior front surface portion and interior rear face portion tap receipts away from the axis, in order to uniform point of light
Cloth.
22. lens as claimed in claim 21, wherein be arranged to will be from the front-reflection surface for the main output surface
The anaclasis that part and back reflection surface portion receive is to the axis, further to promote the uniform distribution of light.
23. lens as claimed in claim 20, wherein the outer output surface further includes outer lateral face portion, from described
Main output surface part extends towards the plate, and the outer lateral face portion is arranged to receive from the inner surface
Anaclasis is to the axis, to promote the uniformity of light illumination mode.
24. lens as claimed in claim 23, wherein the outer lateral face portion is substantially parallel with the axis.
25. lens as claimed in claim 24, wherein the outer lateral face portion by from the main output surface part and
The intermediate surface is limited towards the peripheral wall that the plate extends.
26. lens as claimed in claim 25, wherein the outer lateral face portion has in the plane parallel with the plate
The basic right cylindrical shape in the almost circular section of middle interception.
27. lens as claimed in claim 25 are further included to outward flange, the axis is extended outwardly away from from the peripheral wall.
28. lens as described in claim 1 are that double transversal is symmetrical on front to back direction.
29. lens as described in claim 1, are a parts for lighting device, the lighting device includes：
Multiple LED light sources, are spaced apart along circuit board, each in the LED light source limits an axis；And
Multiple lens, each described lens is on corresponding one in the LED light source.
30. lens as claimed in claim 29, wherein the lighting device includes the lensing elements of single-piece, including passing through
Multiple lens components of common flange part interconnection, each described lens component include one in the multiple lens.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/466,076 | 2012-05-07 | ||
| US13/466,076 US10408429B2 (en) | 2012-02-29 | 2012-05-07 | Lens for preferential-side distribution |
| US13/842,776 US9541258B2 (en) | 2012-02-29 | 2013-03-15 | Lens for wide lateral-angle distribution |
| US13/842,776 | 2013-03-15 | ||
| PCT/US2013/039688 WO2013169643A1 (en) | 2012-05-07 | 2013-05-06 | Lens for wide lateral-angle distribution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104302973A CN104302973A (en) | 2015-01-21 |
| CN104302973B true CN104302973B (en) | 2018-05-18 |
Family
ID=49551185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380024053.0A Active CN104302973B (en) | 2012-05-07 | 2013-05-06 | For the lens of wide lateral angles distribution |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104302973B (en) |
| WO (1) | WO2013169643A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016071845A1 (en) * | 2014-11-06 | 2016-05-12 | Philips Lighting Holding B.V. | Asymmetric lens and linear lighting apparatus |
| US10468566B2 (en) * | 2017-04-10 | 2019-11-05 | Ideal Industries Lighting Llc | Hybrid lens for controlled light distribution |
| EP3415812A1 (en) * | 2017-06-13 | 2018-12-19 | Philips Lighting Holding B.V. | A lens for a light source, for providing an asymmetric output, and a lighting unit using the lens |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102054925A (en) * | 2009-10-29 | 2011-05-11 | 富准精密工业(深圳)有限公司 | Light emitting diode module |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7775685B2 (en) * | 2003-05-27 | 2010-08-17 | Cree, Inc. | Power surface mount light emitting die package |
| US7805048B2 (en) * | 2006-05-10 | 2010-09-28 | Cree, Inc. | Methods and apparatus for directing light emitting diode output light |
| EP2294620B1 (en) * | 2008-05-27 | 2017-08-02 | Cree, Inc. | Method for led-module assembly |
| US7841750B2 (en) * | 2008-08-01 | 2010-11-30 | Ruud Lighting, Inc. | Light-directing lensing member with improved angled light distribution |
| CN102116453A (en) * | 2010-01-05 | 2011-07-06 | 富士迈半导体精密工业（上海）有限公司 | Optical lens and illuminating device |
-
2013
- 2013-05-06 WO PCT/US2013/039688 patent/WO2013169643A1/en active Application Filing
- 2013-05-06 CN CN201380024053.0A patent/CN104302973B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102054925A (en) * | 2009-10-29 | 2011-05-11 | 富准精密工业(深圳)有限公司 | Light emitting diode module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104302973A (en) | 2015-01-21 |
| WO2013169643A1 (en) | 2013-11-14 |
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