CN201421024Y - Optical lens for LED street lamp - Google Patents
Optical lens for LED street lamp Download PDFInfo
- Publication number
- CN201421024Y CN201421024Y CN2009200541685U CN200920054168U CN201421024Y CN 201421024 Y CN201421024 Y CN 201421024Y CN 2009200541685 U CN2009200541685 U CN 2009200541685U CN 200920054168 U CN200920054168 U CN 200920054168U CN 201421024 Y CN201421024 Y CN 201421024Y
- Authority
- CN
- China
- Prior art keywords
- light
- optical lens
- street lamp
- led street
- bowl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The utility model relates to optical lens technical field, in particular to an optical lens for a LED street lamp; the optical lens comprises a light guide cylinder shaped like a hollow cylinder, thefront end of the light guide cylinder extends forwards and outwards to be provided with a trumpet-shaped condensing bowl, and a light entry hole is arranged at the rear end of the light guide cylinder; when in use, light emitted by the LED bulb enters the light guide cylinder through the light entry hole and forms a bundle along the inner wall of the light guide cylinder; part of the light bundleis directly emitted and the other part of the light bundle is condensed and reflected through the condensing bowl, the scattering of light is greatly eliminated, the light forms a light spot along theedge of the condensing bowl, the loss of light is reduced, the directional lighting strength is enhanced, the lighting brightness is improved, the light strength in lighting area is even, and the lighting demand of large lighting area is satisfied.
Description
Technical field:
The utility model relates to the optical lens technical field, particularly the optical lens of LED street lamp.
Background technology:
In the LED lighting engineering, for the light extraction efficiency that improves LED and easy to use, generally need once encapsulate, such as the packaged type that adopts globe lens to led chip.For specific application scenario, as the LED street lighting, require the light cover, so that form the hot spot that needs, handle thereby need carry out secondary optics to the led chip (generally claiming the LED bulb) after once encapsulating.The processing mode of prior art is to install a public secondary lens additional before one group of LED bulb, to reach the purpose of optically focused.Adopt this mode to carry out after-treatment, because must preset a distance between LED bulb and the secondary lens, the light that enters secondary lens has been veiling glare, so the light emission rate that secondary optics is handled is low, thereby cause light loss big, brightness is low, and the range of exposures that is combined into array is little, and brightness of illumination is low.
The utility model content:
The purpose of this utility model is to provide at the deficiencies in the prior art a kind of optical lens of LED street lamp, and this optical lens light emission rate height can improve the range of exposures and the brightness of illumination of LED street lamp.
For achieving the above object, the utility model adopts following technical scheme:
The optical lens of LED street lamp, it comprises the light conducting cylinder that is hollow tubular, and described light conducting cylinder front end has extended trumpet-shaped convergent bowl forward and outwards, and the light conducting cylinder rear end is a light well.
Offer axial beam split groove on the described convergent bowl bowl wall.
Axle center, described convergent bowl bowl wall upper edge symmetry offers two beam split grooves.
The height of described beam split groove equates with the height of convergent bowl.
The taper angle of described convergent bowl is 30 °～60 °.
Further, the taper angle of described convergent bowl is 45 °.
Be coated with adhesive-layer on the end face of described light conducting cylinder rear end.
The utility model beneficial effect is: the utility model comprises the light conducting cylinder that is hollow tubular, and described light conducting cylinder front end has extended trumpet-shaped convergent bowl forward and outwards, and the light conducting cylinder rear end is a light well; During use, the light that the LED bulb sends enters light conducting cylinder through described light well, and forms light beam along the light conducting cylinder inwall; This light beam part light directly penetrates, another part light is through the optically focused reflection of convergent bowl, greatly eliminated scattering of light, make light form a hot spot along described convergent bowl edge, reduce the loss of light, strengthened the directional illumination light intensity, improved brightness of illumination, and the light intensity in the irradiated area is even, thereby can satisfy the lighting requirement of big irradiated area.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is that the utility model is installed on the structural representation on the led chip;
Accompanying drawing 3 is that the utility model is installed on the interior structural representation of street lamp that the LED array is formed.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is further described, sees shown in the accompanying drawing 1, this is preferred embodiment of the present utility model; The optical lens of LED street lamp, it comprises the light conducting cylinder 11 that is hollow tubular, and described light conducting cylinder 11 front ends have extended trumpet-shaped convergent bowl 12 forward and outwards, and light conducting cylinder 11 rear ends are light well.
See shown in the accompanying drawing 2 that the utility model is installed on the led chip substrate 22, LED bulb 21 is arranged in the described light well, and during use, the light that LED bulb 21 sends enters light conducting cylinder 11 through described light well, and forms light beam along light conducting cylinder 11 inwalls; This light beam part light directly penetrates, another part light is through the optically focused reflection of convergent bowl 12, greatly eliminated scattering of light, make light form a hot spot along described convergent bowl 12 edges, reduce the loss of light, strengthened the directional illumination light intensity, improved brightness of illumination, and the light intensity in the irradiated area is even, thereby can satisfy the lighting requirement of big irradiated area.
Wherein, the described optical lens 1 of present embodiment is made for transparent material; Described light conducting cylinder 11 is cylindrical, and correspondingly, the cross section of described convergent bowl 12 is rounded; Like this, the light major part that LED bulb 21 sends forms cylindrical light beam through light conducting cylinder 11 guiding, and reflects to form circular light spot through convergent bowl 12 optically focused; And small part light is through light conducting cylinder 11 barrels and 12 bowls of wall transmissions of convergent bowl and refraction, and in the street lamp of being made up of the LED array 3, each LED bulb 21 formed hot spot has overlapping mutually and forms a whole hot spot.
See shown in the accompanying drawing 1, offer axial beam split groove 13 on 12 bowls of walls of the described convergent bowl of present embodiment; And axle center, 12 bowls of wall upper edges of described convergent bowl symmetry offers two beam split grooves 13.As shown in Figure 3, on the street lamp 3 that the utility model is mainly used in being made up of a plurality of LED bulb 21 arrays, in above-mentioned street lamp 3, optical lens 1 its beam split groove 13 of being installed on every row LED bulb 21 is towards unanimity, like this, during the described beam split of light directive groove 13, penetrate described convergent bowl 12 by ease in the beam split groove 13, thereby the hot spot that each LED bulb 21 is sent partially overlaps, and has further strengthened the globality of street lamp 3 hot spots.
The height of described beam split groove 13 equates with the height of convergent bowl 12.
See shown in the accompanying drawing 1 that the described convergent bowl 12 of present embodiment, its taper angle are 30 °～60 °.Generally speaking, described taper angle is big more, and then formed hot spot is big more, and irradiated area is big more, but the light intensity in the range of exposures is low more, and illumination brightness is low more; And taper angle is more little, and then hot spot is more little, and irradiated area is more little, and the light intensity in the range of exposures is strong more, and illumination brightness is high more; So according to actual needs, described taper angle can be chosen suitable value in above-mentioned scope; Preferably, the taper angle of the described convergent bowl 12 of present embodiment is 45 °.
See shown in the accompanying drawing 2, be coated with adhesive-layer on the described light conducting cylinder 11 rear end end faces of present embodiment.Like this, described optical lens 1 can be bonded on the described led chip substrate 22 by described adhesive-layer.Certainly, this optical lens 1 is fixed in purpose on the described led chip substrate 22 as long as can reach, also can adopt be spirally connected, other connected mode such as clamping.
The above only is a better embodiment of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.
Claims (7)
1, the optical lens of LED street lamp is characterized in that: it comprises the light conducting cylinder (11) that is hollow tubular, and described light conducting cylinder (11) front end has extended trumpet-shaped convergent bowl (12) forward and outwards, and light conducting cylinder (11) rear end is a light well.
2, the optical lens of LED street lamp according to claim 1 is characterized in that: offer axial beam split groove (13) on described convergent bowl (12) the bowl wall.
3, the optical lens of LED street lamp according to claim 2 is characterized in that: described convergent bowl (12) bowl axle center, wall upper edge symmetry offers two beam split grooves (13).
4, the optical lens of LED street lamp according to claim 3 is characterized in that: the height of described beam split groove (13) equates with the height of convergent bowl (12).
5, the optical lens of LED street lamp according to claim 4 is characterized in that: the taper angle of described convergent bowl (12) is 30 °～60 °.
6, the optical lens of LED street lamp according to claim 5 is characterized in that: the taper angle of described convergent bowl (12) is 45 °.
7, the optical lens of LED street lamp according to claim 6 is characterized in that: be coated with adhesive-layer on the end face of described light conducting cylinder (11) rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200541685U CN201421024Y (en) | 2009-04-08 | 2009-04-08 | Optical lens for LED street lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200541685U CN201421024Y (en) | 2009-04-08 | 2009-04-08 | Optical lens for LED street lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201421024Y true CN201421024Y (en) | 2010-03-10 |
Family
ID=41807683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200541685U Expired - Fee Related CN201421024Y (en) | 2009-04-08 | 2009-04-08 | Optical lens for LED street lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201421024Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900295A (en) * | 2010-08-17 | 2010-12-01 | 王海军 | High-power LED small angle-packaged lens structure |
| WO2016188117A1 (en) * | 2015-05-25 | 2016-12-01 | 广州市雅江光电设备有限公司 | Reflective light guide barrel, led light source and optical system |
-
2009
- 2009-04-08 CN CN2009200541685U patent/CN201421024Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900295A (en) * | 2010-08-17 | 2010-12-01 | 王海军 | High-power LED small angle-packaged lens structure |
| WO2016188117A1 (en) * | 2015-05-25 | 2016-12-01 | 广州市雅江光电设备有限公司 | Reflective light guide barrel, led light source and optical system |
| US10139075B2 (en) | 2015-05-25 | 2018-11-27 | Guangzhou Yajiang Photoelectric Equipment Co., Ltd | Reflective light guide tube and LED light source, and optical system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100310 Termination date: 20110408 |