CN102620181B - LED (Light-Emitting Diode) light-distribution light source, manufacturing method thereof and solid lens adopted by LED light-distribution light source - Google Patents
LED (Light-Emitting Diode) light-distribution light source, manufacturing method thereof and solid lens adopted by LED light-distribution light source Download PDFInfo
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- CN102620181B CN102620181B CN201110028706.5A CN201110028706A CN102620181B CN 102620181 B CN102620181 B CN 102620181B CN 201110028706 A CN201110028706 A CN 201110028706A CN 102620181 B CN102620181 B CN 102620181B
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Abstract
The invention provides an LED (Light-Emitting Diode) light-distribution light source which comprises a flat-bottom-surface solid lens and an LED multi-chip module, wherein the LED multi-chip module is arranged at the backside of the lens; a silica gel layer on the surface of the LED multi-chip module is seamlessly and tightly adhered to a central area of the flat bottom surface of the lens, and light emitted by the LED multi-chip module directly enters the lens to form a bat wing rectangular light field required by a street lamp; and a reflecting film is covered at the peripheral part of the central area of the flat bottom surface of the lens and in front of LED chips in the module so as to reflect partial dioptric light and partial reflected light from the lens. The LED light-distribution light source is a primary light source with a single lens, the light emitted by the LED multi-chip module passes through the lens so as to directly form the bat wing rectangular light field required by the street lamp, and the reflecting film can reflect out partial dioptric light and partial reflected light from the lens again, so that the optical energy loss is reduced, the light effect is improved, the uniformity of the light field brightness is 40% higher than the upper limit of the required value of the standard.
Description
Technical field
The present invention relates to the light source assembly manufacturing technology that high power LED road lamp is used, the particularly solid lenticular body of a kind of LED luminous intensity distribution light source, preparation method and employing thereof, LED luminous intensity distribution light source is directly fitted tightly and forms the primary source with single lens with solid lenticular body tight by LED multi-chip module, can directly form the desired batswing tab rectangle of street lamp specification light field, and the uniformity of brightness is higher than the required value upper limit of specification.
Background technology
The lighting angle of conventional lamp mostly is 360 degree, is to promote the utilization rate of light, and manufacturer all arranges the reflector of reflex together in light source back, collect utilize less than part light, promote illumination.
The luminous intensity distribution of LED street lamp rectangle light field at present, no matter be combination or the modular combination of particle type, the luminous intensity distribution of lens all adopts many lens or many set of lenses to synthesize the lens luminous intensity distribution of, what have even only works as light-distribution lens with the lower casing transparent body of light fixture.Reflection mode the continue to use traditional design mode that install reflector the same as conventional lamp of its lamp light source, attempt to promote illumination by the reflex of the metal plating of recess in light fixture upper casing or the reflector of individual particle formula LED self, in actual use, reflector does not have much effects illumination is promoted.Because its lighting angle of LED lamp is less than 180 degree (approximately 120 ~ 130 degree angle), adding reflector at its light source back is unnecessary unnecessary design, does not have much effects, and cost is increased.
Adopt the rectangle light field of LED multi-chip module street lamp and the uniformity of illumination how undesirable, adopt the mode of three secondary light sources can make the uniformity of its rectangle light field and illumination improve, but light efficiency loss is very large.With secondary souce, light efficiency is approximately lost between 15～25%, calculates if light efficiency just only surplus 64% of three secondary light sources with median.
Utilize LED multi-chip modules directly can form by astigmat luminous intensity distribution the rectangle light field needing, but due to the employing of astigmat, the luminous energy that still has quite a few can be because of the refraction of lens, reflection quilt loss and waste.
Directly form rectangle light field by LED multi-chip modules by a solid lenticular body, and cover reflectance coating in part around territory, incident light district before LED chip wherein, in solid lenticular body, by reflectance coating, the part refract light from solid lenticular body and part reverberation are reflected again, the high light efficiency LED luminous intensity distribution light source forming by this way has no related documents and discloses.
Summary of the invention
The above-mentioned defect existing for overcoming prior art, the invention provides a kind of LED luminous intensity distribution light source and preparation method thereof, directly fitted tightly and form with solid lenticular body tight by LED multi-chip module, the light that LED multi-chip modules is sent directly enters solid lenticular body and forms the batswing tab rectangle light field that street lamp requires.
The present invention provides a kind of solid lenticular body with reflectance coating simultaneously, is used for making LED luminous intensity distribution light source, meets market demand.
LED luminous intensity distribution light source of the present invention, comprising:
A solid lenticular body of planar base surface, the central area of its planar base surface is as territory, incident light district;
One LED multi-chip modules, be arranged at the solid lenticular body of the described planar base surface back side, the central area tight of the planar base surface of the silica gel layer on this LED multi-chip modules surface and the solid lenticular body of described planar base surface fits tightly, and the light that this LED multi-chip modules is sent directly enters the solid lenticular body of described planar base surface and forms the batswing tab rectangle light field that street lamp requires; And,
Reflectance coating, this reflectance coating is covered in the part around of central area of planar base surface of the solid lenticular body of described planar base surface, and be positioned at the front of the LED chip of described LED multi-chip modules, for reflecting part refract light and the part reverberation from the solid lenticular body of described planar base surface.
Wherein, the shape of described reflectance coating can be Long Circle, and there is the rectangular aperture with the central area shape adaptation of the planar base surface of the solid lenticular body of described planar base surface centre.But the metallic reflective coatings such as described reflectance coating aluminium film, silverskin, thickness is 0.001-0.02 mm, reflectance coating can form by vacuum sputtering technique.
A preparation method for above-mentioned LED luminous intensity distribution light source, comprises the following steps:
Configure a solid lenticular body of planar base surface, the central area of its planar base surface is as territory, incident light district;
In the part around the central area of the planar base surface of the solid lenticular body of this planar base surface, cover reflectance coating, to reflect part refract light and the part reverberation from the solid lenticular body of this planar base surface; This reflectance coating can be the metallic reflective coating such as aluminium film, silverskin forming by vacuum sputtering technique, and thickness is 0.001-0.02 mm.
At the solid lenticular body of this planar base surface back side, one LED multi-chip modules is set, the central area tight of the silica gel layer on this LED multi-chip modules surface and the planar base surface of the solid lenticular body of this planar base surface is fitted tightly, the light that this LED multi-chip modules is sent directly enters the solid lenticular body of described planar base surface and forms the batswing tab rectangle light field that street lamp requires, and reflects by described reflectance coating from part refract light and the part reverberation of the solid lenticular body of this planar base surface.
In above-mentioned luminous intensity distribution light source, preferably adopt the solid lenticular body with reflectance coating as follows.
Should comprise with the solid lenticular body of reflectance coating: a base portion, the bottom surface of this base portion is planar base surface, the central area of this planar base surface is as territory, incident light district, in the part around the central area of this planar base surface, reflectance coating is set, for reflecting part refract light and the part reverberation from this solid lenticular body; One projection, this projection is positioned on described base portion, comprise pars intermedia and be symmetricly set in this pars intermedia two two part spheroid portions,, the refraction cambered surface smooth connection of the refraction sphere of these two part spheroid portions and this pars intermedia; Two planes of reflection, these two planes of reflection are symmetricly set in the upper middle part of pars intermedia of described projection, tilt to adjacent part spheroid portion respectively, the refraction sphere that reflexes to adjacent part spheroid portion for the central area of the planar base surface from described base portion being injected to the part light of this solid lenticular body penetrates; And, two shading planes, these two shading planes lay respectively at the root of described two planes of reflection, the intersection place of nearly described two planes of reflection.
This solid lenticular body further can comprise two lateral reflection planes, these two lateral reflection plane symmetry are arranged at the both sides of the pars intermedia of described projection, can aluminizer or silverskin etc., also plated film not, for the degree of depth of control rectangle light field the light field width of road vertical direction (with).Angle between described two planes of reflection can be 50-135 degree.
LED luminous intensity distribution light source of the present invention is the primary source with single lens, by LED multi-chip module directly and the solid lenticular body tight of planar base surface fit tightly and form, the light that LED multi-chip modules is sent directly enters the solid lenticular body of planar base surface and forms the batswing tab rectangle light field that street lamp requires, and the uniformity of brightness is higher than the required value upper limit 40% of specification, light efficiency improves, the light efficiency loss problem of having avoided tradition to take the design of secondary souce or three secondary light sources to cause.
In LED luminous intensity distribution light source, in the part around the central area of the planar base surface of described solid lenticular body, be coated with reflectance coating, this reflectance coating is positioned at the front of the LED chip of LED multi-chip modules, part refract light from described solid lenticular body and part reverberation can be reflected again, greatly reduce optical energy loss.
Adopt the same specification LED luminous intensity distribution light source of making respectively with the solid lenticular body of planar base surface of reflectance coating and the solid lenticular body of planar base surface of non reflecting film, through contrast test, promote more than 20% than the latter light efficiency with the former of reflectance coating.
Its lenticular body is planar base surface solid structure, comprise base portion and by pars intermedia be symmetricly set in two projections that part spheroid portion forms at pars intermedia two, the refraction sphere that the part light of injecting lenticular body can be reflexed to two parts spheroid portion by being arranged at two planes of reflection at upper middle part of pars intermedia penetrates, and forms batswing tab rectangle light field distribution curve flux; The central area of the planar base surface of base portion is as territory, incident light district, in the part around the central area of the planar base surface of base portion, reflectance coating is set, and can reflect part refract light and part reverberation from this solid lenticular body, and optical energy loss is greatly reduced.
Brief description of the drawings
Fig. 1 is embodiment 1 stereogram;
Fig. 2 is the stereogram of the solid lenticular body of planar base surface in Fig. 1 embodiment 1;
Fig. 3 is the transverse sectional view of Fig. 1 embodiment 1;
Fig. 4 is the top view of Fig. 1 embodiment 1;
Fig. 5 is the solid lenticular body stereogram of planar base surface that embodiment 2 adopts;
Transverse sectional view, longitudinal sectional view and top view that Fig. 6,7,8 is Fig. 5;
Fig. 9 is the light path schematic diagram of the solid lenticular body of Fig. 5 planar base surface.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described.
With reference to Fig. 1-4, embodiment 1 LED luminous intensity distribution light source mainly comprises: a solid lenticular body 1 of planar base surface, and the central area 111 of its planar base surface is as territory, incident light district; LED multi-chip modules 2, be arranged at the solid lenticular body of described planar base surface 1 back side, the silica gel layer 26 on these LED multi-chip modules 2 surfaces is territory, incident light district with the central area 111(of the planar base surface of the solid lenticular body 1 of described planar base surface) tight fits tightly, and the light that this LED multi-chip modules 2 is sent directly enters the solid lenticular body 1 of described planar base surface and forms the batswing tab rectangle light field that street lamp requires; And, reflectance coating 112, this reflectance coating 112 is covered in the part around of central area 111 of planar base surface of the solid lenticular body 1 of described planar base surface, and be positioned at the front of the LED chip 24 of described LED multi-chip modules 2, for reflecting part refract light and the part reverberation from the solid lenticular body 1 of described planar base surface, to reduce optical energy loss.
Wherein, the solid lenticular body 1 of planar base surface comprises base portion 11 and projection 12 etc.
The bottom surface of base portion 11 is planar base surface, and the central area 111 of this planar base surface is as territory, incident light district, and the part around the central area 111 of this planar base surface is coated with reflectance coating 112.Reflectance coating 112 is the metallic reflective coating such as aluminium film, silverskin, and reflectance coating thickness is 0.001-0.02 mm.Aluminium film, silverskin etc. can form by vacuum sputtering technique.In embodiment 1 reflectance coating 112 be shaped as Long Circle, there is the opening with the central area 111 shape adaptations of the planar base surface of the solid lenticular body 1 of described planar base surface centre, silica gel layer 26 shapes on the shape of this central area 111 and LED multi-chip modules 2 surfaces are coincide.
Projection 12 is positioned on described base portion 11, it comprises pars intermedia 122 and is symmetricly set in two part spheroid portions 121,127 at these pars intermedia 122 two, the refraction cambered surface smooth connection of the refraction sphere of these two part spheroid portions 121,127 and this pars intermedia 122.
And, in the upper middle part of the pars intermedia 122 of described projection 12, be symmetrically arranged with two planes of reflection 124,125, both tilt to adjacent part spheroid portion respectively, angle is 50-135 degree, two planes of reflection 124,125 are led and have certain refraction to be reflected into, and the refraction sphere that the part light that is mainly used in the central area of the planar base surface from described base portion 11 111 to inject the solid lenticular body of this planar base surface reflexes to adjacent part spheroid portion penetrates.Being respectively arranged with 1241,1251, two shading planes 1241,1251 of two shading planes at the root of described two planes of reflection 124,125 is fully-reflected plane, and the light total reflection being mapped on both is penetrated to the refraction sphere of adjacent part spheroid portion.Two shading planes can form frosting by frosting technology at the root of the corresponding plane of reflection, also can apply light shield layer or paste photomask etc. at the root of the corresponding plane of reflection.
The profile of the top view of described projection 12 is Long Circle.The convergence part of described projection 12 and described base portion 11 is equipped with installs anchor ring 113, for combining closely of the solid lenticular body of this planar base surface and light field light shield bottom opening.
Wherein, LED multi-chip modules 2 is as Fig. 3, and LED multi-chip modules 2 mainly comprises copper base 21, plastic frame 22, LED chip 24, fluorescent powder silica gel layer 25, silica gel layer 26 and electrode layer 23 27.Plastic frame 22 is anchored on above copper base 21; some LED chips 24 are longitudinal and transverse to be arranged in plastic frame 22; and on the copper base 21 being bound to by elargol or tin cream; LED chip 24 surroundings and top are distributed with fluorescent powder silica gel layer 25; for the central area 111(of the planar base surface of realizing the solid lenticular body 1 of module and planar base surface is territory, incident light district) tight fits tightly; and protection connects gold thread and fluorescent powder silica gel layer; add silica gel layer 26 at fluorescent powder silica gel layer 25 skin, its thickness is (degree of depth by plastic parts 22 is determined) within the scope of 0.1-5 millimeter.Electrode layer 23,27 is arranged at the interior both sides of plastic frame 22, the convenient power supply that connects.
The making step of the LED luminous intensity distribution light source of embodiment 1 is as follows:
Select the solid lenticular body 1 of above-mentioned planar base surface, in the part around the central area 111 of the planar base surface of the solid lenticular body 1 of this planar base surface, cover reflectance coating 112; Reflectance coating 112 represents central area 111 Long Circle part around as Fig. 2, and the shape of reflectance coating 112 is Long Circle, and there is rectangular aperture centre; Wherein, this reflectance coating 112 is aluminium film, silverskin etc., and the reflectance coatings such as described aluminium film, silverskin can form by the sputter of vacuum sputtering technique, and thickness is 0.001-0.02 mm.
At the back side of the solid lenticular body 1 of this planar base surface (planar base surface), LED multi-chip modules 2 is set, making the central area 111(of the silica gel layer 26 on these LED multi-chip modules 2 surfaces and the planar base surface of the solid lenticular body 1 of this planar base surface is territory, incident light district) tight fits tightly, and the light that this LED multi-chip modules 2 is sent directly enters the solid lenticular body of described planar base surface and forms the batswing tab rectangle light field that street lamp requires.
Assembled state, cover the reflectance coating 112 in the part around of central area 111 of planar base surface of the solid lenticular body 1 of planar base surface, be positioned at the front (or top) of the LED chip 24 of LED multi-chip modules 2, this reflectance coating 112 can reflect the part refract light from described solid lenticular body and part reverberation again, greatly reduces optical energy loss.Through contrast test, promote more than 20% with the light efficiency of the LED luminous intensity distribution light source of reflectance coating.
The solid lenticular body 1 of planar base surface of the present invention preferably adopts the transparent materials such as glass, Merlon (PC) and the lucite (PMMA) that light transmission is good to make.
The embodiment of the present invention 2 is basic identical with embodiment 1 structure, comprise the solid lenticular body of planar base surface, LED multi-chip modules and reflectance coating, this reflectance coating is covered in the part around of central area of planar base surface of the solid lenticular body of this planar base surface, and this LED multi-chip modules is arranged at the solid lenticular body of this planar base surface back side.Assembled state, this reflectance coating is positioned at the front (or top) of the LED chip of this LED multi-chip modules, reduces optical energy loss to reflect from part refract light and the part reverberation of this solid lenticular body.
Wherein, LED multi-chip modules can adopt the LED module of Fig. 3 structure, also can adopt the various street lamps LED module of selling, as GT-P100WW6410001006A type LED module of the WG-P100WLED module of the big Optronics APS in Lantian, Shenzhen, lattice sky photoelectricity etc., also can adopt homemade LED multi-chip modules.
The solid lenticular body of planar base surface and embodiment 1 primary structure are basic identical.With reference to Fig. 5-9, the solid lenticular body 1 of planar base surface comprises base portion 11 and is connected to projection 12 on base portion 11 etc.The bottom surface of this base portion 11 is planar base surface, and the central area 111 of this planar base surface is as territory, incident light district, and the part around the central area 111 of this planar base surface is coated with reflectance coating 112.This projection 12 is positioned on described base portion 11, projection 12 comprises pars intermedia 122 and is symmetricly set in two part spheroid portions 121,127 at these pars intermedia 122 two, the refraction cambered surface smooth connection of the refraction sphere of these two part spheroid portions 121,127 and this pars intermedia 122.And, in the upper middle part of the pars intermedia 122 of described projection 12, be symmetrically arranged with two planes of reflection 124,125, both angles are 50-135 degree, tilt to adjacent part spheroid portion respectively, two planes of reflection 124,125 are led and have certain refraction (Fig. 9) to be reflected into, and the refraction sphere that the part light that is mainly used in the central area of the planar base surface from described base portion 11 111 to inject the solid lenticular body of this planar base surface reflexes to adjacent part spheroid portion penetrates.Root (near the intersection place of described two planes of reflection) at described two planes of reflection 124,125 is respectively arranged with two shading planes 1241,1251, two shading planes 1241,1251 are fully-reflected plane, and the light total reflection being mapped on both is penetrated to (Fig. 9) to the refraction sphere of adjacent part spheroid portion.
Also be symmetrically arranged with two lateral reflection planes 128,129 in the both sides of the pars intermedia 122 of described projection 12, for the degree of depth of control rectangle light field.These two lateral reflection planes 128,129 can aluminizer or the metallic reflective coating such as silverskin, also plated film not.
For improving the illumination of pars intermedia 122 of described projection 12, be symmetrical arranged two auxiliary refraction spheres 123,126 at the end face of described pars intermedia 122, the radius of curvature of this auxiliary refraction sphere is a bit larger tham the radius of curvature of the cambered surface of pars intermedia 122.Two auxiliary refraction spheres 123,126 can replace with auxiliary plane of refraction.
Claims (2)
1. a LED luminous intensity distribution light source, is characterized in that comprising:
A solid lenticular body of planar base surface, the central area of its planar base surface is as territory, incident light district;
One LED multi-chip modules, be arranged at the described lenticular body back side, the central area tight of the silica gel layer on this module surface and the planar base surface of described lenticular body fits tightly, and the light that this module sends directly enters described lenticular body and forms the batswing tab rectangle light field that street lamp requires; And, reflectance coating, this reflectance coating is covered in the part around of central area of planar base surface of described lenticular body, and is positioned at the front of the LED chip of described module, for reflecting part refract light and the part reverberation from described lenticular body;
Wherein, described lenticular body comprises: a base portion, and the bottom surface of this base portion is planar base surface, the central area of this planar base surface is as territory, incident light district; One projection, this projection is positioned on described base portion, comprises pars intermedia and two part spheroid portions that are symmetricly set in this pars intermedia two, the refraction cambered surface smooth connection of the refraction sphere of these two part spheroid portions and this pars intermedia; Angle is two planes of reflection of 50-135 degree, these two planes of reflection are symmetricly set in the upper middle part of pars intermedia of described projection, tilt to adjacent part spheroid portion respectively, the refraction sphere that reflexes to adjacent part spheroid portion for the central area of the planar base surface from described base portion being injected to the part light of this lenticular body penetrates; Two shading planes, these two shading planes lay respectively at the root of described two planes of reflection; For two lateral reflection planes of the control rectangle light field degree of depth, both are symmetricly set in the both sides of the pars intermedia of described projection; And at symmetrically arranged two the auxiliary refraction spheres of end face of described pars intermedia, the radius of curvature of this auxiliary refraction sphere is a bit larger tham the radius of curvature of the refraction cambered surface of described pars intermedia;
The thickness of described reflectance coating is 0.001-0.02 mm.
2. LED luminous intensity distribution light source as claimed in claim 1, is characterized in that, described reflectance coating is aluminium film or silverskin.
3. LED luminous intensity distribution light source as claimed in claim 1 or 2, is characterized in that: described reflectance coating be shaped as Long Circle,
Centre is provided with the opening with the central area shape adaptation of the planar base surface of described lenticular body.
4. LED luminous intensity distribution light source as claimed in claim 1, is characterized in that: wherein, the convergence part ring of described projection and described base portion is established an installation anchor ring, for combining closely of described lenticular body and light field light shield bottom opening.
5. the solid lenticular body with reflectance coating, LED luminous intensity distribution light source for claim 1-4 described in any one, it is characterized in that comprising: a base portion, the bottom surface of this base portion is planar base surface, the central area of this planar base surface is as territory, incident light district, in the part around the central area of this planar base surface, reflectance coating is set, for reflecting part refract light and the part reverberation from this solid lenticular body; One projection, this projection is positioned on described base portion, comprises pars intermedia and two part spheroid portions that are symmetricly set in this pars intermedia two, the refraction cambered surface smooth connection of the refraction sphere of these two part spheroid portions and this pars intermedia; Two planes of reflection, these two planes of reflection are symmetricly set in the upper middle part of pars intermedia of described projection, tilt to adjacent part spheroid portion respectively, the refraction sphere that reflexes to adjacent part spheroid portion for the central area of the planar base surface from described base portion being injected to the part light of this solid lenticular body penetrates; Two shading planes, these two shading planes lay respectively at the root of described two planes of reflection; For two lateral reflection planes of the control rectangle light field degree of depth, these two lateral reflection plane symmetry are arranged at the both sides of the pars intermedia of described projection; And, be located on described projection and described base portion convergence part one install anchor ring, for combining closely of this solid lenticular body and light field light shield bottom opening;
Wherein, the angle between described two planes of reflection is 50-135 degree; The thickness of described reflectance coating is 0.001-0.02 mm.
6. as claimed in claim 5 with the solid lenticular body of reflectance coating, it is characterized in that, be symmetrically arranged with two auxiliary refraction spheres at the end face of described pars intermedia, the radius of curvature of this auxiliary refraction sphere is a bit larger tham the radius of curvature of the refraction cambered surface of described pars intermedia.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110028706.5A CN102620181B (en) | 2011-01-26 | 2011-01-26 | LED (Light-Emitting Diode) light-distribution light source, manufacturing method thereof and solid lens adopted by LED light-distribution light source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110028706.5A CN102620181B (en) | 2011-01-26 | 2011-01-26 | LED (Light-Emitting Diode) light-distribution light source, manufacturing method thereof and solid lens adopted by LED light-distribution light source |
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| CN102620181A CN102620181A (en) | 2012-08-01 |
| CN102620181B true CN102620181B (en) | 2014-11-26 |
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| WO2015165097A1 (en) * | 2014-04-30 | 2015-11-05 | 广东恒润光电有限公司 | Strip-shaped lens for use in led lamp and wide-angle led lamp |
| TWI573954B (en) * | 2015-01-13 | 2017-03-11 | Opto Tech Corp | Optical structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201401724Y (en) * | 2009-04-13 | 2010-02-10 | 珠海泰坦新能源系统有限公司 | Special LED light source lens for road illumination |
| CN201561367U (en) * | 2009-10-21 | 2010-08-25 | 大日光光能服务股份有限公司 | Lens for LED light source |
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| KR20090011501U (en) * | 2009-08-25 | 2009-11-11 | (주)뉴옵틱스 | LED Back-light Unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201401724Y (en) * | 2009-04-13 | 2010-02-10 | 珠海泰坦新能源系统有限公司 | Special LED light source lens for road illumination |
| CN201561367U (en) * | 2009-10-21 | 2010-08-25 | 大日光光能服务股份有限公司 | Lens for LED light source |
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