CN203980145U - A kind of lens and there is the asymmetrical beam distribution of illumination device of these lens - Google Patents
A kind of lens and there is the asymmetrical beam distribution of illumination device of these lens Download PDFInfo
- Publication number
- CN203980145U CN203980145U CN201420429160.3U CN201420429160U CN203980145U CN 203980145 U CN203980145 U CN 203980145U CN 201420429160 U CN201420429160 U CN 201420429160U CN 203980145 U CN203980145 U CN 203980145U
- Authority
- CN
- China
- Prior art keywords
- internal reflection
- total internal
- incidence
- plane
- exit facet
- 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.)
- Withdrawn - After Issue
Links
Abstract
The utility model discloses a kind of lens and there is the asymmetrical beam distribution of illumination device of these lens.Lens have top and bottom, and wherein said bottom comprises the plane of incidence (1) and lay respectively at the first supporting surface (41) and second supporting surface (42) of the described plane of incidence (1) both sides, and described top comprises exit facet (2) and total internal reflection surface (3).Wherein, at cross section, described exit facet (2) is connected to described the first supporting surface (41), and described total internal reflection surface (3) is connected to exit facet (2) and the second supporting surface (42).Described total internal reflection surface (3) comprises the first total internal reflection surface (31) and the second total internal reflection surface (32).Wherein the Part I light of linear light sorurce is incident in the described plane of incidence (1), and outgoing after described exit facet (2) refraction, the Part II light of linear light sorurce is incident in the described plane of incidence (1), and outgoing after described exit facet (2) refraction after described the first total internal reflection surface (31) total internal reflection, the Part III light of linear light sorurce is incident in the described plane of incidence (1), and extremely outgoing after described exit facet (2) refraction after described first, second total internal reflection surface (31,32) total internal reflection first.
Description
Technical field
The utility model relates to a kind of lens and lighting device, especially refers to a kind of asymmetric photodistributed lens and lighting device.
Background technology
Asymmetrical beam distribution of illumination application of installation is in a lot of different applications, and for example exhibition booth of museum, trade fair, exhibition, sales field, publicity are put on display region, Xi Qiang, washed smallpox, street lamp and garden illumination etc.Such lighting device throws light on to content, article or metope, the road surface etc. put on display pointedly, and can not thrown light in other regions, thereby more effectively throws light on targetedly.In current asymmetrical beam distribution of illumination device, conventionally adopt T5 fluorescent tube to use as linear light sorurce.The light being sent by T5 fluorescent tube is by being fixed on metope illumination reflector on housing towards predetermined direction deflection.
But, because people are to the improving constantly of lighting requirement, and the continuous enhancing of environmental protection and energy saving consciousness, people are more and more ready to use LED lighting device as light source, this is because LED lighting device has long service life, high luminous efficiency and lower energy consumption.But in asymmetrical beam distribution of illumination device, while adopting the linear light sorurce of being made by LED lighting device to use as light source, be difficult to obtain by existing metope illumination reflector the asymmetrical beam distribution effect that existing common asymmetrical beam distribution of illumination device produces.
Summary of the invention
The purpose of this utility model is to provide a kind of lens for linear light sorurce, and the light that LED light source sends can be realized asymmetric light after by these lens and distribute, thereby throws light on targetedly better.In addition, the utility model has also proposed a kind of asymmetrical beam distribution of illumination device with said lens.
To achieve these goals, the utility model adopts following technical scheme: a kind of lens for linear light sorurce, there is top and bottom, and wherein said bottom comprises the plane of incidence and lays respectively at the first supporting surface and second supporting surface of described plane of incidence both sides.Described top comprises exit facet and total internal reflection surface.Wherein, at cross section, described exit facet is connected to described the first supporting surface, and described total internal reflection surface is connected to exit facet and the second supporting surface.Described total internal reflection surface comprises the first total internal reflection surface and the second total internal reflection surface.Wherein the Part I light of linear light sorurce is incident in the described plane of incidence, and outgoing after described exit facet refraction; The Part II light of linear light sorurce is incident in the described plane of incidence (1), and outgoing after described exit facet refraction after described the first total internal reflection surface total internal reflection; The Part III light of linear light sorurce is incident in the described plane of incidence, and extremely outgoing after described exit facet refraction after described first, second total internal reflection surface total internal reflection first.
Preferably, described exit facet comprises the first exit facet and the second exit facet, wherein said Part I light is outgoing after the first exit facet refraction after plane of incidence refraction, and described second, third part light is outgoing after the second exit facet refraction after total internal reflection surface total internal reflection after plane of incidence refraction.
Preferably, the Extrude Face that described the first exit facet is free curve, the angular range of the optical axis of its tangent line and linear light sorurce is that-20 degree change between 90 degree.
Preferably, described the second exit facet is connected with the first exit facet and the second total internal reflection surface, and wherein the second exit facet is linear parallel with the optical axis of linear light sorurce.
Preferably, described the second exit facet is connected with the first exit facet and the second total internal reflection surface, and wherein the second exit facet is linear and is the angle of 1 degree to 5 degree with the optical axis of linear light sorurce.
Preferably, the described plane of incidence comprises first plane of incidence, second plane of incidence and the 3rd plane of incidence, and wherein second plane of incidence is connected with first plane of incidence and the 3rd plane of incidence respectively, and the optical axis of linear light sorurce is through the point of interface of first plane of incidence and second plane of incidence.
Preferably, described first plane of incidence is connected with the first supporting surface, and is the concave surface that is arranged with away from linear light sorurce direction, and it increases to the angular range of the tangent line of upper end and the optical axis of linear light source gradually from lower end.
Preferably, described second plane of incidence is the convex surface being convexly equipped with towards linear light sorurce direction, wherein, the light that the Part II light of linear light sorurce becomes almost parallel after the second plane of incidence refraction then after the second total internal reflection surface total internal reflection through exit facet outgoing.
Preferably, described the 3rd plane of incidence is connected with the second supporting surface, is linear parallel with the optical axis of linear light sorurce or be the angle of 1 degree to 10 degree.
Preferably, described the first total internal reflection surface is the concave surface being arranged with away from linear light sorurce direction, and described the second total internal reflection surface is convex surface or the linear towards linear light sorurce.
Preferably, the angle forming between described the first total internal reflection surface and the second total internal reflection surface is greater than 90 degree, and the angle forming between the second total internal reflection surface and the second exit facet is less than 90 degree.
Preferably, the angular range between the tangent line of described the first total internal reflection surface and the optical axis of linear light source is between 5 degree to 45 degree.
Preferably, the angular range between the tangent line of described the second total internal reflection surface and the optical axis of linear light source is between 35 degree to 45 degree, and reduces gradually along short transverse.
Preferably, described lens are the lens of extruding that extend along the direction parallel with the bearing of trend of linear light sorurce.
To achieve these goals, the utility model also adopts following technical scheme: a kind of asymmetrical beam distribution of illumination device, it comprises lens as above and linear light sorurce.
Preferably, described linear light sorurce is LED linear light sorurce.
Compared to prior art, the utility model lens and asymmetrical beam distribution of illumination device have following advantage: the light by the different piece to linear light source carries out different optical treatment, and emergent ray has been realized the deviation of wide-angle.
brief description of the drawings
Fig. 1 is the three-dimensional view that meets the lens of the utility model preferred embodiment;
Fig. 2 is the front view of the lens shown in Fig. 1;
Fig. 3 is the light path schematic diagram of the optical axis left side light of lens shown in Fig. 2;
Fig. 4 is the light path schematic diagram of the optical axis right side light of lens shown in Fig. 2;
Fig. 5 is the luminous intensity distribution figure of lens shown in Fig. 2.
detailed description of the invention
Please refer to shown in Fig. 1 to Fig. 2, the lens 100 that meet the utility model preferred embodiment are formed as the basic lens that extend along the direction parallel with the bearing of trend of linear light sorurce 5.These lens 100 have top and bottom.Bottom comprises the plane of incidence 1 and lays respectively at the first supporting surface 41 and second supporting surface 42 of the plane of incidence 1 both sides.Top comprises exit facet 2 and total internal reflection surface 3.Wherein, from cross section (front view, Fig. 2), see, exit facet 2 is connected to the first supporting surface 41, and total internal reflection surface 3 is connected to the second supporting surface 42.The outgoing after the plane of incidence 1 and exit facet 2 refractions of a part of light of linear light sorurce 5, a part of light is outgoing after exit facet 2 refractions after the plane of incidence 1 refracts to total internal reflection surface 3 and carrying out total internal reflection.
From Fig. 1, further, the plane of incidence 1 comprises first plane of incidence 11, second plane of incidence 12 and the 3rd plane of incidence 13, and at a certain angle mutually each other, has formed the container cavity 10 that holds linear light sorurce 5.In the utility model preferred embodiment, first plane of incidence 11 is for one end of closing on container cavity 10 from the first supporting surface 41 is upwards and to the concave surface being arranged with away from linear light sorurce 5 directions, be the Extrude Face of free curve, it is gradually and increases to the angular range of the tangent line of upper end and the optical axis Y of linear light source 5 from lower end.Second plane of incidence 12 is that it also can think the Extrude Face of free curve towards the convex surface of the direction of linear light sorurce 5 and between first plane of incidence 11 and the 3rd plane of incidence 13.The optical axis Y that the 3rd plane of incidence 13 is parallel to linear light sorurce 5 arranges, and also can arrange tilting certain angle away from the direction of total internal reflection surface 3 with respect to optical axis Y, and for example tilt 1 degree to 10 degree or 5 degree are to 10 degree.Wherein, first plane of incidence 11 is positioned at the left side of the optical axis Y of linear light sorurce 5, is positioned at the homonymy of optical axis Y with the first supporting surface 41 and exiting surface 2.Second and third plane of incidence 12,13 is positioned at the right side of optical axis Y, is positioned at the homonymy of optical axis Y with the second supporting surface 42 and total internal reflection surface 3.In the utility model preferred embodiment, the optical axis Y of linear light sorurce 5 is through the point of interface of first plane of incidence 11 and second plane of incidence 12.
Refer to Fig. 1 and Fig. 2, exit facet 2 one end are connected away from one end of container cavity 10 with the first supporting surface 41, and the other end is connected with total internal reflection surface 3.Exit facet 2 further comprises the first exit facet 21 and the second exit facet 22.Wherein, the Extrude Face that the first exit facet 21 is free curve, the angular range of the optical axis Y of its tangent line and linear light sorurce 5 is to change between 0 degree to 90 degree.The second exit facet 22 is linear parallel with optical axis Y, therefore between the two, is formed with one and is close to 90 angles of spending and be less than 90 degree.Certainly, the angle that the second exit facet 22 also can be certain with optical axis Y, this angle is the smaller the better, and in the utility model preferred embodiment, this angle is preferably 2 degree to 5 degree.The curved profile of exit facet 2 is not limited only to above-mentioned form, can meet the shooting angle control to the utility model first, second and third part light.
Please continue to refer to Fig. 1 and Fig. 2, total internal reflection surface 3 comprises the first total internal reflection surface 31 and the second total internal reflection surface 32.The first total internal reflection surface 31, for towards the concave surface being arranged with away from linear light sorurce 5 directions, can be thought along the Extrude Face of a free curve.Angular range between the optical axis Y of the tangent line of the first total internal reflection surface 31 and linear light source 5 is between 5 degree to 45 degree.And the second total internal reflection surface 32 is the convex surface away from linear light sorurce 5 directions,, along the Extrude Face of a free curve, it can also be a tapered plane, but is preferably the Extrude Face of free curve so that control more neatly the total reflection angle of light.In the utility model preferred embodiment, the angular range between the tangent line of the second total internal reflection surface 32 and the optical axis Y of linear light source 5 is between 35 degree to 45 degree, and reduces gradually along short transverse.Above-mentioned first, second total internal reflection surface 31,32 also can be set to linear or other line styles, as long as meet incident ray generation total reflection.Between the first total internal reflection surface 31 and the second total internal reflection surface 32, form the angle that is greater than 90 degree, and the second total internal reflection surface 32 and the second exit facet 22 are formed with the angle that is less than 90 degree.The second total internal reflection surface 32 is crossing with optical axis Y.
Known in conjunction with the index path shown in Fig. 3 and Fig. 4, be divided into three parts from the light of linear light sorurce 5, be respectively the Part I light in the optical axis Y left side that is positioned at linear light sorurce 5 and be positioned at Part II light and the Part III light on described optical axis Y right side.Part I light is by first plane of incidence 11 and the rear outgoing of the first exit facet 21 refraction.In the utility model preferred embodiment, the angle between angle and the optical axis Y of the outgoing after the first exit facet refraction of Part I light is between 0 degree to 80 degree, fully to realize irradiation light intensity and the distance of dipped beam.Part II light refracts to the second total internal reflection surface 32 by second plane of incidence 12 to carry out reflecting rear outgoing by the second exit facet 22 after total internal reflection, wherein, the light that the Part II light of linear light sorurce 5 becomes almost parallel after the second plane of incidence 12 refraction then after the second total internal reflection surface 32 total internal reflections through exit facet 2 outgoing.Part III light refracts to the first total internal reflection surface 31 by the 3rd plane of incidence 13 to carry out total internal reflection to the second total internal reflection surface 32 and carries out reflecting rear outgoing by the second exit facet 22 after total internal reflection for the second time.In utility model preferred embodiment, the angle after second, third part deflection of light and between optical axis Y is preferably 80 degree, thereby realizes the asymmetrical beam distribution of wide-angle, guarantees that light has irradiation distance far away and larger range of exposures.But this angle can change between 70 degree to 89 degree, fully to realize irradiation light intensity and the distance of distance light.In sum, this three parts light is all deflected to a side of lens 100, and deviation angle and optical axis Y angular range can realize from the comprehensive covering between 0 degree to 90, thereby the asymmetrical beam of having realized wide-angle distributes.
Fig. 5 shows the light distribution map of the utility model lens 100, as seen from the figure, can obtain a kind of asymmetrical light distribution effect by applying lens of the present utility model, the angle between its largest light intensity value and the optical axis Y of linear light sorurce 5 is 77 degree left and right, and distribution of light is more concentrated.
The asymmetrical beam distribution of illumination device that the utlity model has said lens comprises above-mentioned linear light sorurce 5 and said lens 100.Linear light sorurce 5 can adopt the LED lamp bar of middle low power, forms line source.
Should be noted that, embodiment of the present utility model has preferably implementation, and not the utility model is done to any type of restriction, any person skilled in art of being familiar with may utilize the technology contents of above-mentioned announcement to change or be modified to the effective embodiment being equal to, in every case do not depart from the content of technical solutions of the utility model, any amendment or equivalent variations and the modification above embodiment done according to technical spirit of the present utility model, all still belong in the scope of technical solutions of the utility model.
Claims (16)
1. the lens for linear light sorurce, there is top and bottom, wherein said bottom comprises the plane of incidence (1) and lays respectively at the first supporting surface (41) and second supporting surface (42) of the described plane of incidence (1) both sides, and described top comprises exit facet (2); It is characterized in that: described top also comprises total internal reflection surface (3), wherein, at cross section, described exit facet (2) is connected to described the first supporting surface (41), and described total internal reflection surface (3) is connected to exit facet (2) and the second supporting surface (42); Described total internal reflection surface (3) comprises the first total internal reflection surface (31) and the second total internal reflection surface (32); Wherein the Part I light of linear light sorurce is incident in the described plane of incidence (1), and outgoing after described exit facet (2) refraction, the Part II light of linear light sorurce is incident in the described plane of incidence (1), and outgoing after described exit facet (2) refraction after described the first total internal reflection surface (31) total internal reflection, the Part III light of linear light sorurce is incident in the described plane of incidence (1), and extremely outgoing after described exit facet (2) refraction after described first, second total internal reflection surface (31,32) total internal reflection first.
2. lens as claimed in claim 1, it is characterized in that: described exit facet (2) comprises the first exit facet (21) and the second exit facet (22), wherein said Part I light is outgoing after the first exit facet (21) refraction after the plane of incidence (1) refraction, and described second, third part light is outgoing after the second exit facet (22) refraction after total internal reflection surface (3) total internal reflection after the plane of incidence (1) refraction.
3. lens as claimed in claim 2, is characterized in that: the Extrude Face that described the first exit facet (21) is free curve, the angular range of the optical axis (Y) of its tangent line and linear light sorurce (5) is that-20 degree change between 90 degree.
4. lens as claimed in claim 2 or claim 3, it is characterized in that: described the second exit facet (22) is connected with the first exit facet and the second total internal reflection surface (32), wherein the second exit facet (22) is linear parallel with the optical axis (Y) of linear light sorurce (5).
5. lens as claimed in claim 2 or claim 3, it is characterized in that: described the second exit facet (22) is connected with the first exit facet and the second total internal reflection surface (32), wherein the second exit facet (22) is the angle of 1 degree to 5 degree for linear and with the optical axis (Y) of linear light sorurce (5).
6. the lens as described in claims 1 to 3 any one, it is characterized in that: the described plane of incidence (1) comprises first plane of incidence (11), second plane of incidence (12) and the 3rd plane of incidence (13), wherein second plane of incidence (12) is connected with first plane of incidence (11) and the 3rd plane of incidence (13) respectively, and the optical axis (Y) of linear light sorurce (5) is through the point of interface of first plane of incidence (11) and second plane of incidence (12).
7. lens as claimed in claim 6, it is characterized in that: described first plane of incidence (11) is connected with the first supporting surface (41), and be the concave surface being arranged with away from linear light sorurce (5) direction, it is gradually and increases to the angular range of the tangent line of upper end and the optical axis (Y) of linear light source (5) from lower end.
8. lens as claimed in claim 6, it is characterized in that: the convex surface of described second plane of incidence (12) for being convexly equipped with towards linear light sorurce (5) direction, wherein, the Part II light of linear light sorurce (5) through the light that becomes almost parallel after second plane of incidence (12) refraction then after the second total internal reflection surface (32) total internal reflection through exit facet (2) outgoing.
9. lens as claimed in claim 6, is characterized in that: described the 3rd plane of incidence (13) is connected with the second supporting surface (42), are linear parallel with the optical axis (Y) of linear light sorurce (5) or be the angle of 1 degree to 10 degree.
10. lens as claimed in claim 1 or 2, is characterized in that: the concave surface of described the first total internal reflection surface (31) for being arranged with away from linear light sorurce (5) direction, described the second total internal reflection surface (32) is convex surface or the linear towards linear light sorurce (5).
11. lens as claimed in claim 10, it is characterized in that: the angle forming between described the first total internal reflection surface (31) and the second total internal reflection surface (32) is greater than 90 degree, the angle forming between the second total internal reflection surface (32) and the second exit facet (22) is less than 90 degree.
12. lens as claimed in claim 1, is characterized in that: the angular range between the optical axis (Y) of the tangent line of described the first total internal reflection surface 31 and linear light source (5) is between 5 degree to 45 degree.
13. lens as described in claim 1 or 12, is characterized in that: the angular range between the optical axis (Y) of the tangent line of described the second total internal reflection surface 32 and linear light source (5) is between 35 degree to 45 degree, and reduces gradually along short transverse.
14. lens as claimed in claim 1, is characterized in that: the lens of extruding that described lens are the direction extension along parallel with the bearing of trend of linear light sorurce (5).
15. 1 kinds of asymmetrical beam distribution of illumination devices, it comprises lens (100) and linear light sorurce (5) as described in claim 1-14.
16. asymmetrical beam distribution of illumination devices as claimed in claim 15, is characterized in that: described linear light sorurce (5) is LED linear light sorurce (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420429160.3U CN203980145U (en) | 2014-07-31 | 2014-07-31 | A kind of lens and there is the asymmetrical beam distribution of illumination device of these lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420429160.3U CN203980145U (en) | 2014-07-31 | 2014-07-31 | A kind of lens and there is the asymmetrical beam distribution of illumination device of these lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203980145U true CN203980145U (en) | 2014-12-03 |
Family
ID=51977582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420429160.3U Withdrawn - After Issue CN203980145U (en) | 2014-07-31 | 2014-07-31 | A kind of lens and there is the asymmetrical beam distribution of illumination device of these lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203980145U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202482A (en) * | 2015-10-23 | 2015-12-30 | 欧普照明股份有限公司 | Lens and illumination device |
| CN105318275A (en) * | 2014-07-31 | 2016-02-10 | 欧普照明股份有限公司 | Lens and illuminating device capable of realizing asymmetrical light distribution and provided with lens |
| CN105627195A (en) * | 2016-01-30 | 2016-06-01 | 深圳市邦贝尔电子有限公司 | Novel light-emitting diode (LED) projection lamp |
| JP2016110076A (en) * | 2014-12-09 | 2016-06-20 | エルジー イノテック カンパニー リミテッド | Lens and light-emitting element module including the same |
| CN105715997A (en) * | 2016-01-30 | 2016-06-29 | 深圳市邦贝尔电子有限公司 | LED floodlight |
| CN105937749A (en) * | 2016-06-21 | 2016-09-14 | 欧普照明股份有限公司 | Light distribution element, light source assembly and lighting equipment |
| TWI684030B (en) * | 2017-12-04 | 2020-02-01 | 巨輪興業股份有限公司 | Optical element and light source module |
-
2014
- 2014-07-31 CN CN201420429160.3U patent/CN203980145U/en not_active Withdrawn - After Issue
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318275A (en) * | 2014-07-31 | 2016-02-10 | 欧普照明股份有限公司 | Lens and illuminating device capable of realizing asymmetrical light distribution and provided with lens |
| CN105318275B (en) * | 2014-07-31 | 2019-03-12 | 欧普照明股份有限公司 | A kind of lens and the asymmetrical beam distribution of illumination device with the lens |
| JP2016110076A (en) * | 2014-12-09 | 2016-06-20 | エルジー イノテック カンパニー リミテッド | Lens and light-emitting element module including the same |
| CN105202482A (en) * | 2015-10-23 | 2015-12-30 | 欧普照明股份有限公司 | Lens and illumination device |
| CN105202482B (en) * | 2015-10-23 | 2022-10-28 | 欧普照明股份有限公司 | Lens and lighting device |
| CN105627195A (en) * | 2016-01-30 | 2016-06-01 | 深圳市邦贝尔电子有限公司 | Novel light-emitting diode (LED) projection lamp |
| CN105715997A (en) * | 2016-01-30 | 2016-06-29 | 深圳市邦贝尔电子有限公司 | LED floodlight |
| CN105627195B (en) * | 2016-01-30 | 2020-05-01 | 深圳市邦贝尔电子有限公司 | Novel LED projecting lamp |
| CN105715997B (en) * | 2016-01-30 | 2020-05-01 | 深圳市邦贝尔电子有限公司 | LED projection lamp |
| CN105937749A (en) * | 2016-06-21 | 2016-09-14 | 欧普照明股份有限公司 | Light distribution element, light source assembly and lighting equipment |
| TWI684030B (en) * | 2017-12-04 | 2020-02-01 | 巨輪興業股份有限公司 | Optical element and light source module |
| US10760769B2 (en) | 2017-12-04 | 2020-09-01 | Juluen Enterprise Co., Ltd. | Optical element and light assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203980145U (en) | A kind of lens and there is the asymmetrical beam distribution of illumination device of these lens | |
| CN105318275A (en) | Lens and illuminating device capable of realizing asymmetrical light distribution and provided with lens | |
| EP2771729B1 (en) | A lens and an asymmetrical light distribution illuminating device having such lens | |
| CN106247279B (en) | Lens and its light emitting device | |
| US20190033508A1 (en) | Lightguides | |
| CN103912820A (en) | Light-emitting device and relevant display system thereof | |
| US20130151209A1 (en) | Method for designing uniform illumination reflector | |
| KR101541826B1 (en) | Asymmetric type lens and tunner lighting using the same | |
| CN107477517A (en) | A kind of lighting device | |
| TW201226799A (en) | Roadway lighting apparatus | |
| CN207162341U (en) | A kind of lighting device | |
| CN103574516A (en) | Light guide element capable of controlling light beam angle and lamp | |
| CN107477478A (en) | A kind of lighting device | |
| CN103511985B (en) | A kind ofly be applicable to the light distribution device of LED illumination for generation of slender type hot spot | |
| CN208670913U (en) | Flashlight lens and lighting device | |
| CN207610165U (en) | Lens and LED light | |
| CN208535908U (en) | A kind of special-shaped lens and LED lamp | |
| CN202938114U (en) | Light source | |
| KR20200101773A (en) | Lighting equipment to suppress light-pollution | |
| CN107062156B (en) | Wash pinup lens, have this light emitting module who washes pinup lens and wash pinup | |
| CN206582646U (en) | Transparent anti-dazzle grating | |
| CN204573913U (en) | A kind of light chopping LED tunnel lamp lens | |
| CN208058751U (en) | One word hot spot lens of one kind and light emitting module | |
| CN104197275A (en) | Lens used for light source | |
| CN204116641U (en) | For reducing lighting device and the optical element thereof of dazzle value |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141203 Effective date of abandoning: 20190312 |
|
| AV01 | Patent right actively abandoned |