CN104295967A - LED multi-side lighting planer light source - Google Patents

LED multi-side lighting planer light source Download PDF

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Publication number
CN104295967A
CN104295967A CN201410540343.7A CN201410540343A CN104295967A CN 104295967 A CN104295967 A CN 104295967A CN 201410540343 A CN201410540343 A CN 201410540343A CN 104295967 A CN104295967 A CN 104295967A
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China
Prior art keywords
led
light
lens
reflection
refraction
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Granted
Application number
CN201410540343.7A
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Chinese (zh)
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CN104295967B (en
Inventor
孙慧卿
郑欢
孙浩
李旭娜
杨敏
蔡金鑫
郭志友
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South China Normal University
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South China Normal University
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The invention discloses an LED multi-side lighting planer light source which comprises an LED array, an optical lens array, a condensing, diffusing and transmitting board and a transparent integral support plate. The LED array consists of multiple LEDs in arrangement. Each non-imaging secondary optical lens comprises an upper concave lens portion, a lower concave lens portion, four angles of refraction and reflection, four edges of refraction and reflection and four internal vertical sides; the four angles of the refraction and reflection of the optical lens are in rectangular arrangement, the four edges of refraction and reflection of the optical lens are arranged on four sides of the rectangle, the four internal vertical sides and the concave lens consisting of the upper concave lens portion and the lower concave lens are disposed in the middle of the rectangle, and the LEDs are disposed in the lower portion of the space formed by the four internal vertical sides of the optical lens. The LED multi-side lighting planer light source has the advantages of simple structure, small size, capability of reflecting a little light to the back, and good light intensity and uniformity within the total lighting area.

Description

LED multifaceted light-emitting planar light source
Technical field
The present invention relates to LED planar lamp technical field, be specifically related to a kind of LED multifaceted light-emitting planar light source.
Background technology
Semiconductor lamp is tending towards ripe, the wherein product extensive use such as LED street lamp, LED projector lamp, LEDbulb lamp, but LED lamp designing technique is among evolution, and subject matter concentrates on the aspect such as LED light extraction efficiency, bright dipping mode.LED planar lamp technology common at present does not also have full maturity, and the subject matter of existence is: LED light source forms the uniformity technical barrier of planar light extracting; General LED planar lamp belongs to one side bright dipping, when being arranged on top, house, being dark space, affecting the overall brightness in house above light fixture, or illuminating effect; Adopt direct-injection type structure LED planar lamp, its reflector total reflection light, makes light fixture back side dull thread; The reflector total reflection light of side entering type LED planar lamp, back side dull thread; Universal LED flat lamp all adopts metal backing, and light is transmissive not.
Summary of the invention
The present invention is in order to solve the above-mentioned existing problems of LED plane light source, and the invention provides a kind of LED multifaceted light-emitting planar light source, concrete technical scheme is as follows.
LED multifaceted light-emitting planar light source, comprise the LED array be arranged in by multiple LED, each LED is equipped with non-imaged secondary optics head lens, multiple non-imaged secondary optics head lens forming optical lens array, it also comprises poly-loose transparent panel and transparent integral support plate, non-imaged secondary optical lens is formed in one structure, and non-imaged secondary optical lens comprises top concave lens portion, below concave lens portion, the refraction of four optical lenses and reflection corner, the refraction of four lens and reflection limit and four optical lens internal vertical sides; Described side's concave lens portion, below concave lens portion form concavees lens, the refraction of described four optical lenses and the rectangular arrangement of reflection corner, refraction and the reflection limit of four lens are arranged on the four edges of described rectangle, described concavees lens and four optical lens internal vertical sides are positioned at the middle part of described rectangle, the also rectangular arrangement and be positioned at the below of described below concave lens portion of four optical lens internal vertical sides, LED is positioned at the bottom, space that four optical lens internal vertical sides surround.
Further optimal enforcement ground, described top concave lens portion, below concave lens portion, four optical lens internal vertical sides make the some light of LED form rectangular light spot, and uniform-illumination in the rectangular light spot of outgoing, forms the light of rectangular light spot and the angle of lens centre axle is β; The refraction of four optical lenses and the common looping lens of the refraction of reflection corner and four lens and reflection limit, be that light within the scope of α reflects and reflection sends to LED lighting angle, the side of LED multifaceted light-emitting planar light source and the back side is made all to have Transmission light, described angle [alpha] is the angle of light and horizontal plane, and size is 90 ° of-β.
Further optimal enforcement ground, described α is less than or equal to 20 °, and β is more than or equal to 70 °.
Further optimal enforcement ground, the refraction of four optical lenses is concordant with four optical lens internal vertical sides bottoms with the bottom of reflection limit common looping lens with the refraction of four lens with reflection corner, and top is concordant with concave lens portion edge, top.
Further optimal enforcement ground, the refraction of each described optical lens and reflection corner alternately have the side for reflecting and for reflecting from bottom to up successively, and realizing LED lighting angle is that light within the scope of α reflects and reflection sends.
Further optimal enforcement ground, the refraction of each described optical lens and reflection limit alternately have the side for reflecting and for reflecting from bottom to up successively, and realizing LED lighting angle is that light within the scope of α reflects and reflection sends.
Further optimal enforcement ground, the angle for the LED light line of the side that reflects and this side of directive is less than 120 °; Angle for the LED light line of the side reflected and this side of directive is greater than 120 °.
Further, described non-imaged secondary optical lens adopts clear glass or transparent resin material.
All there is beam projecting before and after LED multifaceted light-emitting planar light source of the present invention and side.By transparent integral support plate, side and rear section uniform light transmission are gone out, and ensure surrounding bright dipping, realize the effect not having dark space after flat lamp is installed.
Compared with prior art, tool of the present invention has the following advantages and technique effect: the overall light emission rate of non-imaged secondary optical lens of the present invention is greater than 95%, and emit beam and be transmitted to different directions, all be used effectively, about have 5 ~ 15% light reflections to side direction and dorsad, transparent integral support plate, side and rear section uniform light project away, ensure the surrounding bright dipping of flat lamp, realize the effect not having dark space after flat lamp is installed, there is the advantage that in total light-emitting area, intensity of illumination uniformity is good.
Accompanying drawing explanation
Fig. 1 is LED multifaceted light-emitting planar light source general structure composition diagram in embodiment.
Fig. 2 is the non-imaged secondary rectangle optical lens three-dimensional structure diagram of rectangular configuration in embodiment.
Fig. 3 is the non-imaged secondary optical lens top view of the rectangular configuration in embodiment.
Fig. 4 is the non-imaged secondary rectangle optical lens front view of the rectangular configuration in embodiment.
Fig. 5 is the non-imaged secondary rectangle optical lens profile of the rectangular configuration in embodiment.
Fig. 6 is the non-imaged secondary rectangle optical lens stereogram of bottom view of the rectangular configuration in embodiment.
Fig. 7 is the non-imaged secondary rectangle optical lens bottom view of rectangular configuration in embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing, enforcement of the present invention is described further, but enforcement of the present invention and protection are not limited thereto.If there is the not special process described in detail it is noted that following, be all that those skilled in the art can with reference to existing techniques in realizing.
In Fig. 1 ~ Fig. 7, LED multifaceted light-emitting planar light source comprises: the non-imaged secondary rectangle optical lens 1, LED2 of rectangular configuration, transparent integral support 3, and poly-loose transparent panel 4(comprises solar panel, astigmatism plate and light-passing board).As Fig. 3, non-imaged secondary optical lens comprises top concave lens portion 101, the refraction of below concave lens portion 110, four optical lenses and reflection corner (102,104,106,108), the refraction of four lens and reflection limit (103,105,107,109) and four optical lens internal vertical sides (as in Fig. 6 117 ~ 120); Described side's concave lens portion 101, below concave lens portion 110 form concavees lens, the refraction of described four optical lenses and the rectangular arrangement of reflection corner, refraction and the reflection limit of four lens are arranged on the four edges of described rectangle, described concavees lens and four optical lens internal vertical sides are positioned at the middle part of described rectangle, the also rectangular arrangement and be positioned at the below of described below concave lens portion 110 of four optical lens internal vertical sides, LED is positioned at the bottom, space that four optical lens internal vertical sides surround.Its global shape as shown in Figure 2 and Figure 4.
As shown in Figure 5, the refraction of each described optical lens and reflection corner alternately have the side for reflecting and for reflecting from bottom to up successively, the refraction of each described optical lens and reflection limit alternately have the side for reflecting and for reflecting from bottom to up successively, and realizing LED lighting angle is that light within the scope of α reflects and reflects.Alternately arrange in ladder from top to bottom with the part for reflecting and reflection ray face 112 for the part that reflects and refracted ray face 111 in Fig. 5, described top concave lens portion 101, below concave lens portion 110, four optical lens internal vertical sides make the some light of LED form rectangular light spot, and uniform-illumination in the rectangular light spot of outgoing, forms the light of rectangular light spot and the angle 113 of lens centre axle is β; The refraction of four optical lenses and the common looping lens of the refraction of reflection corner and four lens and reflection limit, corresponding emergent ray is α to side and back side LED lighting angle 114, light within the scope of α to be reflected and reflection sends, the side of LED multifaceted light-emitting planar light source and the back side is made all to have Transmission light, described angle [alpha] is the angle of light and horizontal plane, and size is 90 ° of-β.The light that such as LED sends throws the light 116 that light that sideways light 115, LED sends invests the back side after reflection after superrefraction, invests the front i.e. light 121 of top.In this example, α is less than 20 °, and β is more than or equal to 70 °, ensures that the light major part that LED sends projects front.
In Figure 5, the light that rectangular optical lens reflection ray surface 111 and LED send is angled must be less than 120 degree, namely light refraction condition is met, the light that LED sends throws sideways light 115 after superrefraction, through the unirefringence of rectangular optical lens interior vertical side, again through refracted ray face 111 birefringence, finally project side.The light that reflection ray face 112 and LED send is angled must be greater than 120 degree, namely light reflection condition is met, the light that LED sends through the unirefringence of rectangular optical lens interior vertical side, then is launched through rectangular optical reflection from lens ray surface 112, and light throws into the back side.
In figure 6, four rectangular optical lens interior vertical side (117 ~ 120) form plane of refraction inside rectangle jointly, and both realized the light that side direction sends, the light that can send LED again plays unirefringence effect.
The transparent integral support plate of this example design LED planar lamp, side and rear section uniform light transmission are gone out, and ensure the surrounding bright dipping of flat lamp, realize the effect not having dark space after flat lamp is installed.Lens can adopt resin material and glass material.

Claims (8)

1.LED multifaceted light-emitting planar light source, it is characterized in that comprising the LED array be arranged in by multiple LED, each LED is equipped with non-imaged secondary optics head lens, multiple non-imaged secondary optics head lens forming optical lens array, characterized by further comprising poly-loose transparent panel and transparent integral support plate, non-imaged secondary optical lens is formed in one structure, non-imaged secondary optical lens comprises top concave lens portion, below concave lens portion, the refraction of four optical lenses and reflection corner, the refraction of four lens and reflection limit and four optical lens internal vertical sides, described side's concave lens portion, below concave lens portion form concavees lens, the refraction of described four optical lenses and the rectangular arrangement of reflection corner, refraction and the reflection limit of four lens are arranged on the four edges of described rectangle, described concavees lens and four optical lens internal vertical sides are positioned at the middle part of described rectangle, the also rectangular arrangement and be positioned at the below of described below concave lens portion of four optical lens internal vertical sides, LED is positioned at the bottom, space that four optical lens internal vertical sides surround.
2. LED multifaceted light-emitting planar light source according to claim 1, it is characterized in that described top concave lens portion, below concave lens portion, some light that four optical lens internal vertical sides make LED forms rectangular light spot, form the light of rectangular light spot and the angle of lens centre axle is β; The refraction of four optical lenses and the common looping lens of the refraction of reflection corner and four lens and reflection limit, be that light within the scope of α reflects and reflection sends to LED lighting angle, the side of LED multifaceted light-emitting planar light source and the back side is made all to have Transmission light, described angle [alpha] is the angle of light and horizontal plane, and size is 90 ° of-β.
3. LED multifaceted light-emitting planar light source according to claim 2, it is characterized in that described α is less than or equal to 20 °, β is more than or equal to 70 °.
4. LED multifaceted light-emitting planar light source according to claim 1, it is characterized in that the refraction of four optical lenses is concordant with four optical lens internal vertical sides bottoms with the bottom of reflection limit common looping lens with the refraction of four lens with reflection corner, top is concordant with concave lens portion edge, top.
5. LED multifaceted light-emitting planar light source according to claim 1, it is characterized in that refraction and the reflection corner of each described optical lens alternately have side for reflecting and for reflecting from bottom to up successively, realizing LED lighting angle is that light within the scope of α reflects and reflection sends.
6. LED multifaceted light-emitting planar light source according to claim 1, it is characterized in that refraction and the reflection limit of each described optical lens alternately have side for reflecting and for reflecting from bottom to up successively, realizing LED lighting angle is that light within the scope of α reflects and reflection sends.
7. the LED multifaceted light-emitting planar light source according to claim 5 or 6, is characterized in that the angle of the LED light line of side for reflecting and this side of directive is less than 120 °; Angle for the LED light line of the side reflected and this side of directive is greater than 120 °.
8. the LED multifaceted light-emitting planar light source according to claim 5 or 6, is characterized in that described poly-loose transparent panel comprises solar panel, astigmatism plate and light-passing board successively.
CN201410540343.7A 2014-10-14 2014-10-14 LED multifaceted light-emitting planar light source Active CN104295967B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104964247A (en) * 2015-06-16 2015-10-07 郭萌 Optical lens
CN106838650A (en) * 2017-03-28 2017-06-13 漳州立达信光电子科技有限公司 Led
CN111442213A (en) * 2020-04-10 2020-07-24 宁波贝克照明电器有限公司 Illumination and atmosphere integrated lamp

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013214449A (en) * 2012-04-03 2013-10-17 Yuichi Suzuki Toroidal lens and lighting device
WO2014069973A1 (en) * 2012-11-05 2014-05-08 주식회사 애니캐스팅 Side emitting led lens, and back light unit and display device having same
CN203605148U (en) * 2013-09-13 2014-05-21 东莞市欧科光电科技有限公司 Novel rectangular light spot LED lens
CN103851538A (en) * 2012-12-04 2014-06-11 欧司朗有限公司 Lens, and omnibearing lighting device and modified lamp with lens

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013214449A (en) * 2012-04-03 2013-10-17 Yuichi Suzuki Toroidal lens and lighting device
WO2014069973A1 (en) * 2012-11-05 2014-05-08 주식회사 애니캐스팅 Side emitting led lens, and back light unit and display device having same
CN103851538A (en) * 2012-12-04 2014-06-11 欧司朗有限公司 Lens, and omnibearing lighting device and modified lamp with lens
CN203605148U (en) * 2013-09-13 2014-05-21 东莞市欧科光电科技有限公司 Novel rectangular light spot LED lens

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104964247A (en) * 2015-06-16 2015-10-07 郭萌 Optical lens
CN104964247B (en) * 2015-06-16 2017-11-24 郭萌 A kind of optical lens
CN106838650A (en) * 2017-03-28 2017-06-13 漳州立达信光电子科技有限公司 Led
CN106838650B (en) * 2017-03-28 2020-02-28 漳州立达信光电子科技有限公司 LED lamp
CN111442213A (en) * 2020-04-10 2020-07-24 宁波贝克照明电器有限公司 Illumination and atmosphere integrated lamp
CN111442213B (en) * 2020-04-10 2021-12-14 宁波贝克照明电器有限公司 Illumination and atmosphere integrated lamp

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