CN102954440A - Secondary light distribution lens used for lighting of multichip semiconductor LED (Light-Emitting Diode) - Google Patents
Secondary light distribution lens used for lighting of multichip semiconductor LED (Light-Emitting Diode) Download PDFInfo
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- CN102954440A CN102954440A CN2011102525960A CN201110252596A CN102954440A CN 102954440 A CN102954440 A CN 102954440A CN 2011102525960 A CN2011102525960 A CN 2011102525960A CN 201110252596 A CN201110252596 A CN 201110252596A CN 102954440 A CN102954440 A CN 102954440A
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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
- F21V7/00—Reflectors for light sources
- F21V7/0091—Reflectors for light sources using total internal reflection
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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
- F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
- F21V5/004—Refractors for light sources using microoptical elements for redirecting or diffusing light using microlenses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
- F21V5/046—Refractors for light sources of lens shape the lens having a rotationally symmetrical shape about an axis for transmitting light in a direction mainly perpendicular to this axis, e.g. ring or annular lens with light source disposed inside the ring
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
- G02B19/0066—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED in the form of an LED array
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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
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/048—Optical design with facets structure
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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
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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Abstract
The invention relates to a lens for solid LED (Light-Emitting Diode) lighting of a semiconductor. The lens comprises a lens body, a fully reflecting surface, a depression, a microlens array and an emergent surface, wherein the fully reflecting surface is arranged at the outer side of the lens body and shaped like a flaky polyhedron; the depression is formed in the middle of the lower edge of the lens body, used for containing an LED, and provided with a side surface and a top part; the microlens array is formed on the top of the depression; the emergent surface is arranged on the top of the lens body; and an approximately even round light spot is formed through the lens. The fully reflecting surface consists of a rhombus, diamond, square or spiral flakey polyhedron. The side surface of the depression is shaped like a cylindrical surface, a conical surface or a revolution curved surface. The emergent surface comprises one or more planes or curved surfaces. The emergent surface comprises a concave or convex spherical surface, a non-spherical surface, a Fresnel surface, a pillow-like lens array or a wavy stripe surface.
Description
Technical field
The present invention relates to a kind of optical lens, be particularly useful for the secondary light-distribution lens of multi-chip semiconductor LED illumination.
Background technology
Existing most of LED secondary optical lens mainly is smooth total reflection lens, and its basic structure is: a smooth non-spherical lens that is used for optically focused is arranged at the top of middle female parts, and the outside one circle is smooth fully reflecting surface.This lens mainly are applicable to the luminous intensity distribution of the LED of single-chip, and it can distribute by hot spot circular, that efficient is higher.But for the LED of multi-chip, this lens are owing to the imaging of middle aspheric surface to chip, and the hot spot that casts out tends to form square or petal-like chip shade.
Summary of the invention
In order to solve the above prior-art problems, the invention provides a kind of lens, it comprises: (a) lens body; (b) be arranged on fully reflecting surface on the outside of described lens body, described fully reflecting surface be shaped as the flakey polyhedron; (c) be formed on the depression in the following centre position of described lens body, it is used for holding LED, and described depression has side and top; (d) be formed on the microlens array at the described top of described depression; And the exit facet that (e) is arranged on the top of described lens body; Wherein, form a uniform circular light spot roughly by described lens.
Described LED is single-chip or multi-chip.
Described flakey polyhedron comprises rhombus, diamond, square or helical surface.
The side of described depression be shaped as cylinder, the conical surface or surface of revolution.
Described exit facet comprises one or more planes or curved surface.
Described exit facet comprises recessed or protruding sphere, aspheric surface, Fresnel surface, pincushion lens arra or waveform stripe surface.
Polyhedral each scale of the described flakey of described reflecting surface has the curved surface of plane or arc.
The shape of described microlens array is circle, hexagon, quadrangle, waveform or radial.
Preferably, a part of light of the side of the described depression of directive of sending from LED, incide on the described reflecting surface through after the described side, the light at formation ± θ angle distributed after its reflection ray penetrated through described exit facet, the light beam full-shape is 2 θ, θ is between 2 ° to 45 °, described lepidiod reflecting surface is used for breaking photodistributed border, the light that each discrete scale generates oneself scope distributes, and the light of a plurality of scales distributes and is created in that more uniform hot spot distributes in the certain angle after the stack by this.
Preferably, a part of light of the described recessed top of directive that sends from LED, through inciding described exit facet after the described top and the light distribution at formations ± θ angle after described exit facet penetrates, wherein θ is between 2 ° to 45 °, and described microlens array is arranged for mixed light.
Preferably, incide reflecting surface that root light bottom, its reflection ray is parallel to optical axis after penetrating through exit facet, incides reflecting surface that root light topmost, and the angle with optical axis after its reflection ray penetrates through exit facet is θ; Incide reflecting surface topmost and the light bottom, after its reflection ray penetrates through exit facet and the angle of optical axis be distributed between the 0 °～θ according to ratio.
In conjunction with described exit facet, be ± the θ angle that the light beam full-shape is 2 θ at each lenticular numerical aperture angle at the top of described depression.
Preferably, be provided with flange at the top of described lens body along making a circle in week, be formed on the position that card base on the described flange is used for the fixed lens body.
Preferably, the bottom of described lens body is provided with the plane, is used for connecting side and the described reflecting surface of described depression, with promotion described lens body is fixed on the pedestal of described LED.
Luminous intensity distribution technology according to nonimaging optics proposed by the invention, the mixed light technology is attached in the secondary optical lens, microlens array and side rhombus, square or diamondoid flakey facetted mirrors face in the middle of utilizing carry out mixed light, are made into simultaneously needed beam angle.Arrangements of chips to any shape can realize more uniform circular light spot, can't see because chip form imaging shade out.Its employed LED can be single-chip and multi-chip, and the RGB different colours.
Description of drawings
Combine the feature of considering that the present invention may be better understood presents with reference to above and following description and with accompanying drawing, thereby can more understand these features with accelerating, wherein:
Fig. 1 is the profile according to the lens of first embodiment of the invention;
Fig. 2 show respectively lens shown in Figure 1 front view, etc. axonometric drawing, top view, side view and bottom view;
Fig. 3 shows the design principle according to the lens of first embodiment of the invention;
Fig. 4 has shown that respectively the far field angle of the light intensity when the light distribution angle θ of lens shown in Figure 1 is respectively 5 °, 18 °, 45 ° distributes;
Fig. 5 (a) is according to the computer simulation of the lens of first embodiment of the invention;
With 5 (b) be the ray tracing of lens shown in Figure 1;
Fig. 6 (a) shows according to the lens of first embodiment of the invention light spot shape and the Illumination Distribution 1 meter distant place;
Fig. 6 (b) shows the profile illumination figure according to the lens of first embodiment of the invention;
Fig. 7 is the far field angle distribution (distribution curve flux) according to the light intensity of the lens of first embodiment of the invention;
Fig. 8 is the profile according to the lens of second embodiment of the invention;
Fig. 9 show respectively lens among Fig. 8 front view, etc. axonometric drawing, top view, side view and bottom view;
Figure 10 is the design principle according to the lens of second embodiment of the invention;
Figure 11 (a) is the computer simulation according to the lens of second embodiment of the invention;
Figure 11 (b) is the ray tracing according to the lens of second embodiment of the invention;
Figure 12 (a) is according to light spot shape and the Illumination Distribution of second embodiment of the invention lens 1 meter distant place;
Figure 12 (b) shows the profile illumination figure according to the lens of second embodiment of the invention;
Figure 13 is according to the far field angle distribution (distribution curve flux) of the light intensity of the lens of second embodiment of the invention;
Figure 14 show respectively according to the front view of the lens of third embodiment of the invention, etc. axonometric drawing, top view, side view and bottom view, wherein the outside reflecting surface be the square scale;
Figure 15 show respectively according to the front view of the lens of fourth embodiment of the invention, etc. axonometric drawing, top view, side view and bottom view, wherein the outside reflecting surface be the spirality scale;
Figure 16 shows the lens according to fifth embodiment of the invention, and wherein lens top exit facet is convex surface;
Figure 17 shows the lens according to sixth embodiment of the invention, and wherein lens top exit facet is concave surface;
Figure 18 shows the lens according to seventh embodiment of the invention, and wherein lens top exit facet is Fresnel (Fresnel) face;
Figure 19 shows the lens according to eighth embodiment of the invention, and wherein the output face at lens top is the pincushion lens arra;
Figure 20 shows the lens according to ninth embodiment of the invention, and wherein the top of lens is corrugated striped lens arra.
The specific embodiment
The profile of the first embodiment of secondary optical lens involved in the present invention as shown in Figure 1.There is a depression position in the middle of this lens bottom.This depression is used for placing the led light source of multi-chip, and its top 2 is comprised of many lenticules (microlens array).The spread geometry of microlens array can be circle, hexagon, quadrangle, waveform, radial and other irregular alignments.The side 1 of depression is the surface of revolution of a face of cylinder, the conical surface or arc.There is a fully reflecting surface 3 in the outside of this secondary light-distribution lens, and this fully reflecting surface is comprised of rhombus, diamond, square or spiral flakey polyhedron; Lens top 4 is exit facet, and it is one or more plane or curved surface, and it can be recessed or protruding sphere, aspheric surface, Fresnel surface, pincushion lens arra, waveform stripe surface or other free form surface; Making a circle in the week at lens top 5 is the fixing flange of usefulness, and it does not play optics, and it can be any shape, and card base can be arranged above it, in order to the position of fixed lens.Lens bottom 6 is the plane, is used for connecting side 1 and the outside fully reflecting surface 3 of depression, and it does not have optical effect, and it is used for the pedestal of lens position in LED.
Fig. 2 is lens 3 views of the first embodiment involved in the present invention.Can find out among the figure: the outside fully reflecting surface 3 of lens is comprised of rhombus, square or diamondoid flakey polyhedron, is preferably the diamond polyhedron here, and polyhedral each ramentum can be the curved surface of plane or arc.Because smooth reflecting surface is continuous to the luminous intensity distribution of incident ray, when led light source is multi-chip LED, can produce speck or blackening than being easier to, and causes the skewness of hot spot.Here the lepidiod reflecting surface that adopts, it is used for breaking the border of distribution of light, and the light that each discrete scale generates oneself scope distributes, and the light of a plurality of scales distributes and is created in that more uniform hot spot distributes in the angle after the stack.There is a depression position in the middle of this secondary optical lens bottom in addition, it is used for placing LED, its top 2 is comprised of microlens array, and this microlens array also plays the mixed light effect to the light from LED incident, forms that more uniform light distributes in the angular range.
Fig. 3 is the design principle of the described lens of the first embodiment.Penetrate sideways a part of light from what LED sent, through inciding on the fully reflecting surface 3 in the lens outside after the depression side 1, the light distribution at formations ± θ angle (the light beam full-shape is 2 θ) after its reflection ray penetrates through the exit facet 4 at lens top.A part of light in the middle of the directive that sends from LED sees through after the microlens array of recessed top, and also the exit facet 4 from the lens top penetrates, and its beam angle also is ± distribution of θ.The luminous intensity distribution of outside reflecting surface 3 is characterized as: incide reflecting surface 3 that root rim ray bottom, the angle of its reflection ray and optical axis OZ is 0 degree, namely is parallel to optical axis OZ and penetrates; Incide reflecting surface 3 that root rim ray topmost, after its reflection ray penetrates through exit facet 4, with the angle of optical axis be θ; Incide other local light in the middle of the reflecting surface 3, after its reflection ray penetrated through exit facet 4, the angle of itself and optical axis was uniformly distributed between the 0 °～θ according to ratio.The luminous intensity distribution of the microlens array at the following umbilicate top of these lens is characterised in that: in conjunction with the exit facet 4 at lens top, each lenticular numerical aperture angle is ± θ angle (full-shape is 2 θ), uniformly light distribution in the formation ± θ angle after a plurality of lenticular emergent light stacks, thus the light of LED incident is played the mixed light effect.The light distribution angle θ of the described lens of the present embodiment can be the arbitrary value (light beam full-shape 2 θ are 4 °～90 °) between 2 ° to 45 ° as required.
Fig. 4 for when lens be respectively narrow, in, angle pencil of ray, when the θ angle is respectively 5 °, 18 °, 45 ° (full-shape is 10 °, 36 °, 90 °), the distribution curve flux of the described lens of this embodiment.
Fig. 5 (a) is the computer simulation according to first embodiment of the invention, and the light source of supposing LED is the CREE MT-G of 12 chips, and the luminous flux of LED is 380Lumen, and lens design (be θ=18 °) according to 36 ° of light beam full-shapes.Fig. 5 (b) is the ray tracing of these lens.Fig. 6 (a), 6 (b) be these lens in light spot shape and the Illumination Distribution of 1 meter distant place, hot spot is circular, can't see the square or petal shade that casts out because of the shape of arrangements of chips.Fig. 7 is that the far field angle of the light intensity of these lens distributes (distribution curve flux), and the beam angle width of half position of light intensity is ± 18 °.The theoretical efficiency of analog result gained lens is 97.827%, and the transmitance of supposing lens material is 92%, and then the actual optical efficiency that processes lens can reach 90%.
The profile of the second embodiment of secondary optical lens involved in the present invention as shown in Figure 8.The exit facet at lens top has been divided into 2 part 24a and 24b among the figure, and wherein 24a is the aspheric surface of protrusion, and 24b is that bus is the surface of revolution of circular arc.Also there is a depression position in the middle of the lens bottom, and its top 22 also is comprised of microlens array, and the side 21 of depression is a cylinder, the conical surface or surface of revolution, the surface of revolution that to be preferably a bus here be circular arc.Outside reflecting surface also is comprised of rhombus, diamond, square or spiral flakey polyhedron, is preferably square water chestnut sheet polyhedron here.Making a circle in the week at lens top 25 is the fixing face of cylinder of usefulness, and it does not play optics, outside it card base can be set, in order to the position of fixed lens.Lens bottom 26 is a plane, and it does not have optical effect in order to connect side 21 and the outside fully reflecting surface 23 of depression.
The view of the lens 3 of the second embodiment of secondary optical lens involved in the present invention as shown in Figure 9.From bottom view, can find out, the depression in the following centre position of lens, its top 22 is comprised of microlens array, and the spread geometry that lenticule is arranged can for circle, hexagon, quadrangle, waveform, radial and other irregular alignments, be preferably radial arrangement mode here.
Figure 10 is the design principle of described lens of the second embodiment involved in the present invention.Described lens are narrow angle lens, and the lens luminous intensity distribution can design according to collimated light beam.Penetrate sideways a part of light from what LED sent, incide on the flakey fully reflecting surface 23 in the lens outside after the side 21 through depression, its reflection ray penetrates through collimation after the exit facet 24b of outer ring, lens top.The middle a part of light of directive from LED sends sees through after the microlens array of recessed top 22, and from the exit facet 24a ejaculation at lens top, its light beam also collimates ejaculation.Since the exit facet at lens top is many light distribution curved surface 24a, the free degree of a luminous intensity distribution design that they are many, for the led light source of a plurality of chips, can be than being easier to design very narrow beam angle according to the lens of this structural design.Certainly the present embodiment also can be designed the lens at angle pencil of ray angle, as long as outer ring reflecting surface 23 is together with exit facet 24b, be made into ± light at θ angle distributes, and equally also needs the microlens array at top 22 of the following depression of lens together with exit facet 24a also shape numerical aperture into θ angle.
Figure 11 (a) is the computer simulation of the present embodiment, and the light source of supposing LED here is the CREE MT-G of 12 chips, and the luminous flux of LED is 380Lumen, and lens are narrow angle lens, design according to collimated light beam.Figure 11 (b) is the ray tracing of the second embodiment lens.
Figure 12 (a), 12 (b) be the lens of the second embodiment in light spot shape and the Illumination Distribution of 1 meter distant place, hot spot is circular, can't see the square or petal-like shade that casts out because of the arrangements of chips shape.Figure 13 is that the far field angle of the light intensity of these lens distributes (distribution curve flux), the beam angle width of half position of light intensity is about ± and 5 °.The theoretical efficiency of analog result gained lens is 98.252%, and the transmitance of supposing lens material is 92%, and then the actual optical efficiency that processes lens can reach 90%.
Secondary optical lens involved in the present invention, it also has other several embodiment.Figure 14 is the 3rd embodiment of the present invention, and except the outside fully reflecting surface 33 of lens was comprised of the square scale, all structure of other of this embodiment was all consistent with the first embodiment.This embodiment with the first embodiment identical beam angle, light spot shape and optical efficiency are arranged.
Figure 15 invents described the 4th embodiment for this, and except the outside fully reflecting surface 43 of lens was comprised of the spirality scale, all structure of other of this embodiment was all consistent with the first embodiment.This embodiment with the first embodiment identical beam angle, light spot shape and optical efficiency are arranged.
Figure 16 is the 5th embodiment of lens of the present invention.The lower part of these embodiment lens is identical with embodiment 1, but the exit facet 54 at its top is convex surface, and it can be sphere, aspheric surface or free form surface.Outstanding exit facet can converge to emergent light certain distance, and shape is conglobate, perhaps the convergence luminous point of other shapes.
Figure 17 is the 6th embodiment of lens of the present invention.The lower part of these embodiment lens is identical with embodiment 1, but the exit facet 64 at its top is concave surface, and it can be sphere, aspheric surface or free form surface.The exit facet of depression can be dispersed emergent light, can form range of exposures larger circle, perhaps the hot spot of other shapes.
Figure 18 is the 7th embodiment of lens of the present invention.The lower part of these embodiment lens is identical with embodiment 1, but the exit facet 74 at its top is Fresnel (Fresnel) face.The exit facet of Fresnel can distribute the converging light (perhaps diverging light) of outgoing more even, realizes that more uniform hot spot distributes.
Figure 19 is the 8th embodiment of lens of the present invention.The lower part of these embodiment lens is identical with embodiment 1, but the exit facet 84 at its top is the pincushion lens arra, because the pincushion lens have two different radius of curvature at X with Y-direction, cause the output beam of these lens in two vertical directions of X and Y two different beam angles can be arranged.This embodiment can be exported the rectangular hot spot that has two different beam angles in X and Y-direction, can be used for automotive lighting and traffic lighting.
Figure 20 is the 9th embodiment of lens of the present invention.The lower part of these embodiment lens is identical with embodiment 1, but the exit facet 94 at its top is corrugated striped lens arra, and corrugated striped lens arra can expand outgoing beam in one direction, and keeps collimation on another direction.This embodiment can produce the hot spot of a line strip that orientation angle is very narrow, another orientation angle is very wide.
Although described the present invention with regard to some specific aspect, the modification that some are additional and change are apparent to those skilled in the art.Therefore it should be understood that and to implement the present invention to be different from specifically described mode, be included in the various changes of size, shape and material aspect, and do not exceed scope and spirit of the present invention.Thereby all aspects of embodiment of the present invention should be thought schematic but not determinate.
Claims (14)
1. lens, it comprises:
(a) lens body;
(b) be arranged on fully reflecting surface (3,23,33,43) on the outside of described lens body, described fully reflecting surface (3,23,33,43) be shaped as the flakey polyhedron;
(c) be formed on the depression in the following centre position of described lens body, it is used for holding LED, and described depression has side (1,21) and top (2,22);
(d) be formed on the microlens array at the described top (2,22) of described depression; And
(e) be arranged on the exit facet (4,24a, 24b) at the top of described lens body;
It is characterized in that, form a uniform circular light spot roughly by described lens.
2. lens as claimed in claim 1 is characterized in that, described LED is single-chip or multi-chip, and the RGB different colours.
3. lens as claimed in claim 1 is characterized in that, described flakey polyhedron comprises rhombus, diamond, square or helical surface.
4. such as the described lens of any one among the claim 1-3, it is characterized in that, the side of described depression (1,21) be shaped as cylinder, the conical surface or surface of revolution.
5. such as the described lens of any one among the claim 1-3, it is characterized in that, described exit facet (4,24a, 24b) comprises one or more planes or curved surface.
6. such as the described lens of any one among the claim 1-3, it is characterized in that, described exit facet (4,24a, 24b) comprises recessed or protruding sphere, aspheric surface, Fresnel surface, pincushion lens arra or waveform stripe surface.
7. such as the described lens of any one among the claim 1-3, it is characterized in that, polyhedral each scale of described flakey of described reflecting surface (3,23,33,43) has the curved surface of plane or arc.
8. such as the described lens of any one among the claim 1-3, it is characterized in that, the shape of described microlens array is circle, hexagon, quadrangle, waveform or radial.
9. such as the described lens of any one among the claim 1-3, it is characterized in that, the side (1 of the described depression of directive of sending from LED, 21) a part of light, through described side (1,21) incide afterwards described reflecting surface (3,23,33,43) on, the light at formation ± θ angle distributed after its reflection ray penetrated through described exit facet (4,24a, 24b), the light beam full-shape is 2 θ, θ between 2 ° to 45 °, described lepidiod reflecting surface (3,23,33,43) be used for breaking photodistributed border, the light that each discrete scale generates oneself scope distributes, and the light of a plurality of scales distributes and is created in that more uniform hot spot distributes in the certain angle after the stack by this.
10. such as the described lens of any one among the claim 1-3, it is characterized in that, a part of light of the described recessed top of directive (2,22) that sends from LED is through inciding described exit facet (4 after the described top, 24a, 24b) and through described exit facet (4,24a, 24b) penetrate the afterwards light distribution at formation ± θ angle, wherein θ is between 2 ° to 45 °, and described microlens array is arranged for mixed light.
11. lens as claimed in claim 9 is characterized in that, incide reflecting surface (3,23,33,43) bottom that root light, its reflection ray is parallel to optical axis after penetrating through described exit facet (4,24a, 24b), incide reflecting surface (3,23,33,43) that root light of the top, its reflection ray is θ through the angle that described exit facet (4,24a, 24b) penetrates rear and optical axis; Incide reflecting surface (3,23,33,43) topmost and the light bottom, after its reflection ray penetrates through described exit facet (4,24a, 24b) and the angle of optical axis be distributed between the 0 °～θ according to ratio.
12. lens as claimed in claim 10 is characterized in that, in conjunction with described exit facet (4,24a, 24b), are ± the θ angle that the light beam full-shape is 2 θ at each lenticular numerical aperture angle at the top (2,22) of described depression.
13. such as the described lens of any one among the claim 1-3, it is characterized in that, be provided with flange at the top of described lens body along make a circle in week (5,25), be formed on the position that card base on the described flange is used for the fixed lens body.
14. such as the described lens of any one among the claim 1-3, it is characterized in that, the bottom (6 of described lens body, 26) be provided with the plane, be used for connecting the side (1,21) and described reflecting surface (3 of described depression, 23,33,43), with promotion described lens body is fixed on the pedestal of described LED.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102525960A CN102954440A (en) | 2011-08-29 | 2011-08-29 | Secondary light distribution lens used for lighting of multichip semiconductor LED (Light-Emitting Diode) |
| PCT/CN2012/076156 WO2013029400A1 (en) | 2011-08-29 | 2012-05-28 | Secondary light distribution lens applicable to multi-core semiconductor led lighting |
| TW101131253A TWI476458B (en) | 2011-08-29 | 2012-08-28 | Secondary light distribution lens for multi-chip semiconductor(led) lighting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102525960A CN102954440A (en) | 2011-08-29 | 2011-08-29 | Secondary light distribution lens used for lighting of multichip semiconductor LED (Light-Emitting Diode) |
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| Publication Number | Publication Date |
|---|---|
| CN102954440A true CN102954440A (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102525960A Pending CN102954440A (en) | 2011-08-29 | 2011-08-29 | Secondary light distribution lens used for lighting of multichip semiconductor LED (Light-Emitting Diode) |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102954440A (en) |
| TW (1) | TWI476458B (en) |
| WO (1) | WO2013029400A1 (en) |
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| CN102162625A (en) * | 2011-01-30 | 2011-08-24 | 深圳市众明半导体照明有限公司 | Large-angle LED and LED lamp |
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| JP2011095660A (en) * | 2009-11-02 | 2011-05-12 | Mitsubishi Electric Corp | Light-reflecting member, lens and lighting fixture |
| CN201787486U (en) * | 2010-04-01 | 2011-04-06 | 飞利浦(中国)投资有限公司 | Optical lens and illumination equipment utilizing same |
| CN201852037U (en) * | 2010-11-24 | 2011-06-01 | 霍永峰 | Lens for light distribution of light emitting diode (LED) illumination lamp and lamp thereof |
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| CN105683800B (en) * | 2013-11-04 | 2019-01-18 | 飞利浦照明控股有限公司 | Collimator with improved light mixing and color mixing properties |
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| CN111033349A (en) * | 2017-04-27 | 2020-04-17 | 路创凯特拉有限责任公司 | Total internal reflection lens for glare reduction while maintaining color mixing and beam steering of LED light sources |
| CN108413354A (en) * | 2018-02-27 | 2018-08-17 | 江苏大学 | A kind of LED blackboard lights lens |
| CN111797445A (en) * | 2020-07-14 | 2020-10-20 | 深圳市千百辉照明工程有限公司 | Design method of LED flower-shaped lighting lens and lens |
| CN111911888A (en) * | 2020-08-12 | 2020-11-10 | 肇庆三雄极光照明有限公司 | Fish scale light mixing lens |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI476458B (en) | 2015-03-11 |
| WO2013029400A1 (en) | 2013-03-07 |
| TW201310084A (en) | 2013-03-01 |
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