CN104344344A - Lens and light source device using same - Google Patents
Lens and light source device using same Download PDFInfo
- Publication number
- CN104344344A CN104344344A CN201310338859.9A CN201310338859A CN104344344A CN 104344344 A CN104344344 A CN 104344344A CN 201310338859 A CN201310338859 A CN 201310338859A CN 104344344 A CN104344344 A CN 104344344A
- Authority
- CN
- China
- Prior art keywords
- lens
- exiting surface
- light
- exiting
- incidence
- 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.)
- Pending
Links
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2101/00—Point-like light sources
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Led Device Packages (AREA)
Abstract
The invention discloses a lens which comprises a first lens and a second lens matched with the first lens, wherein the first lens comprises an incident surface and an emergent surface opposite to the incident surface; a groove is formed in the first lens and is recessed towards the interior of the first lens from the middle of the emergent surface of the first lens; the second lens is arranged in the groove of the first lens and comprises an incident surface fitting the emergent surface of the first lens and an emergent surface opposite to the incident surface; the refraction index of the second lens is smaller than that of the first lens. According to the lens, the second lens is arranged in the groove of the first lens and the refraction index of the second lens is smaller than that of the first lens, so that the light intensity on two sides is enhanced and the light intensity in the center is reduced after light ray emitted by a light source is scattered through the lens, and then uniform light field distribution is formed. The invention further relates to a light source device using the lens.
Description
Technical field
The present invention relates to a kind of lens and use the light supply apparatus of these lens.
Background technology
Light emitting diode (light emitting diode, LED), as a kind of light emitting source efficiently, has the various features such as environmental protection, power saving, life-span length and has been applied to various field widely, particularly back lighting field.In back lighting field, in order to uniform light, LED light source usually can arrange in pairs or groups diverging lens use, make the light of LED light source with larger angle outgoing, thus the effect of large area lighting can be reached.
But, in actual use, the light that LED light source sends after the diffusion of lens, because light is more concentrated near the optical axis of LED light source, sometimes can not eliminate the yellow dizzy phenomenon of bright spot and light field edge of light field central authorities completely, be unfavorable for back lighting.
Summary of the invention
In view of this, be necessary that providing a kind of can make the lens of light supply apparatus uniform in light emission and use the light supply apparatus of these lens.
A kind of lens, the second lens that these lens comprise the first lens and coordinate with these first lens, these first lens comprise incidence surface and the exiting surface relative with this incidence surface, described first lens have a groove, this groove caves in towards the first lens interior in the middle part of the exiting surface of the first lens, these second lens are arranged in the groove of these the first lens, described second lens comprise the incidence surface and the exiting surface relative with this incidence surface of fitting with the first lens exiting surface, and the refractive index of these the second lens is less than the refractive index of the first lens.
A kind of light supply apparatus, comprise at least one LED light source and at least one lens that arrange corresponding to this at least one LED light source, the second lens that each lens comprises the first lens and coordinates with these first lens, these first lens comprise incidence surface and the exiting surface relative with this incidence surface, described first lens have a groove, this groove caves in towards the first lens interior in the middle part of the exiting surface of the first lens, these second lens are arranged in the groove of these the first lens, described second lens comprise the incidence surface and the exiting surface relative with this incidence surface of fitting with the first lens exiting surface, the refractive index of these the second lens is less than the refractive index of the first lens, the incidence surface of each LED light source and the first lens of corresponding lens is just to setting.
Compared with prior art, the second lens that in the present invention, these lens comprise the first lens and coordinate with these first lens, these first lens have groove, these second lens are arranged in the groove of these the first lens, the refractive index of these the first lens is less than the refractive index of the second lens, the light that light source is sent both sides light intensity after lens scatter strengthens, central light strength is weakened, thus forms uniform optical field distribution, and the Huang of the bright spot and light field edge of effectively eliminating the formation of light field central authorities is swooned.
Accompanying drawing explanation
Fig. 1 is the perspective view of the lens of first embodiment of the invention.
The inversion perspective view that Fig. 2 is lens shown in Fig. 1.
Fig. 3 is for lens shown in Fig. 1 are along the cross-sectional schematic in III-III line direction.
Fig. 4 is the generalized section of the light supply apparatus of the lens using first embodiment of the invention.
Fig. 5 is the curve of light distribution schematic diagram of a light supply apparatus in prior art.
The curve of light distribution schematic diagram that Fig. 6 is light supply apparatus shown in Fig. 4.
Fig. 7 is the generalized section of the light supply apparatus of the lens using second embodiment of the invention.
Main element symbol description
| Lens | 1 |
| First lens | 2 |
| Second lens | 3 |
| LED light source | 4 |
| Light supply apparatus | 10、20 |
| Exiting surface | 21、31 |
| Installed surface | 24 |
| Incidence surface | 25、30 |
| Groove | 26 |
| Accommodation space | 27 |
| Scattering particles | 33 |
| Micro-recesses | 34 |
| Bright dipping curved surface | 211 |
| Cylinder | 212 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Refer to Fig. 1 to Fig. 3, the second lens 3 that the lens 1 of first embodiment of the invention comprise the first lens 2 and coordinate with these first lens 2, the exiting surface 21 that these first lens 2 comprise an incidence surface 25 and are oppositely arranged with this incidence surface 25.These first lens 2 have a groove 26, this groove 26 from exiting surface 21 central authorities of these the first lens 2 towards the inner recess of these the first lens 2.These second lens 3 are positioned at the groove 26 of these the first lens 2.
The refractive index of these the second lens 3 is less than the refractive index of the first lens 2.These second lens 3 comprise the incidence surface 30 and the exiting surface 31 relative with this incidence surface 30 of fitting with the first lens 2 exiting surface 21.
These first lens 2 also comprise the installed surface 24 of this incidence surface 25 of a connection and exiting surface 21.The installed surface 24 of these the first lens 2 ringwise, the incidence surface 25 of these the first lens 2 be positioned at this installed surface 24 central authorities and towards this first lens 2 inner recess.
The exiting surface 21 of these the first lens 2 comprises the cylinder 212 extended vertically upward from the outer peripheral edge of this installed surface 24 and the bright dipping curved surface 211 being curved inwardly extension by this cylinder 212 top perimeter.The groove 26 of these the first lens 2 is positioned at the central authorities of the bright dipping curved surface 211 of these the first lens 2.This second lens 3 incidence surface 30 fits tightly on the bright dipping curved surface 211 of these the first lens 2.
The exiting surface 21 of these the first lens 2 is the curved surface of an evagination.The incidence surface 25 of these the first lens 2 is the curved surface of an indent.Incidence surface 25 and the exiting surface 21 of these the first lens 2 are axial symmetry face.In the present embodiment, the incidence surface 25 of these the first lens 2 and exiting surface 21 are all about same central shaft X symmetry (namely the central shaft of light incidence surface 25 and exiting surface 21 overlaps).The incidence surface 25 of these the first lens 2 is an ellipsoid, and the major axis of this incidence surface 25 is positioned on central shaft X.In other embodiments, the incidence surface 25 of these the first lens 2 can be sphere or parabola.
Distance between the exiting surface 21 of these the first lens 2 and the incidence surface 25 of the first lens 2 reduces after the central authorities of this exiting surface 21 first increase gradually gradually from the outer peripheral edge of the exiting surface 21 of the first lens 2, and the distance namely between the exiting surface 21 of these the first lens 2 and the incidence surface 25 of these the first lens 2 first increases rear reduction from the cylinder 212 of the exiting surface 21 of the first lens 2 towards bright dipping curved surface 211 central authorities of the exiting surface 21 of the first lens 2.
These second lens 3 cover the part of the bright dipping curved surface 211 of the exiting surface 21 of these the first lens 2.The mating shapes of the shape of these the second lens 3 and the groove 26 of these the first lens 2.The shape of these the second lens 3 is roughly in back taper.The exiting surface 31 of these the second lens 3 is concordant with the top of the bright dipping curved surface 211 of these the first lens 2.The thickness of these the second lens 3 successively decreases towards the outer peripheral edge of exiting surface 21 gradually from the central authorities of the exiting surface 21 of these the first lens 2.Particularly, the thickness of these the second lens 3 successively decreases towards the cylinder 212 of the exiting surface 21 of these the first lens 2 gradually from bright dipping curved surface 211 central authorities of the exiting surface 21 of these the first lens 2, and namely the thickness of these the second lens 3 is along radially outward successively decreasing gradually perpendicular to central shaft X.
The material of these the first lens 2 can be PC plastics (Merlon), PS plastics (polystyrene) or MS resin (Methyl Methacrylate-Styrene), and its refractive index is between 1.57 ~ 1.59.The material PMMA plastics (PMA) of these the second lens 3 or silicon plastics (silicone plasties), its refractive index is between 1.41 ~ 1.49.
The molding mode of these the second lens 3 is as follows: the groove 26 first raw material (PMMA plastics or silicon plastics) being filled in these the first lens 2 is interior until fill up whole groove 26, then extrude to make this raw material top concordant with the top of the exiting surface 21 of the first lens 2 to raw material, finally UV(ultraviolet light carried out to raw material) solidify to form the second lens 3.Adopt and thisly fill and lead up mode to be formed the adaptation that the second lens 3 effectively can promote these second lens 3 and the first lens 2; And being less than the refractive index of these the first lens 2 due to the refractive index of these the second lens 3, in the optical field distribution that light is formed after the refraction of these lens 1, the Light distribation of light field zone line can be improved and become more even.
Refer to Fig. 4, the LED light source 4 that the light supply apparatus 10 of first embodiment of the invention comprises lens 1 and arranges towards the incidence surface 25 of these lens 1.The installed surface 24 of the incidence surface 25 of the first lens 2 of these lens 1 and the annular of the first lens 2 surrounds the accommodation space 27 of this LED light source 4 of a collecting jointly.This LED light source 4 is contained in this accommodation space 27.The central shaft X of the exiting surface 21 of the optical axis of this LED light source 4 and the first lens 2 of this lens 1 and the incidence surface 25 of these the first lens 2 coincides.
The light that this LED light source 4 sends enters the first lens 2 through incidence surface 25 refraction of the first lens 2 of these lens 1, wherein inject the most of light in these first lens 2 after the bright dipping curved surface 211 of the first lens 2 reflects, enter into the second lens 3 of these lens 1 and be refracted into air through these second lens 3, the small part light injected in the first lens 2 of these lens 1 then enters in air through the refraction of the cylinder 212 of these the first lens 2.
When light m that LED light source 4 sends refraction enters the first lens 2 of these lens 1 and propagates towards the second lens 3 of these lens 1, because the refractive index of these the first lens 2 is large compared with the refractive index of these the second lens 3, light m easily occurs to be totally reflected and is limited in the first lens 2 on the interface of the first lens 2 and the second lens 3.Specifically, the refractive index of these the first lens 2 is 1.57 in the present embodiment, and the refractive index of these the second lens 3 is 1.49, then the cirtical angle of total reflection θ of light m on the interface of the first lens 2 and the second lens 3
0=71.63 degree; And when light m is at the first lens 2 and the cirtical angle of total reflection θ on the interface of air
1=39.57 degree.
Because these second lens 3 are in back taper, the incident angle θ of the light m that LED light source 4 sends on the interface of the first lens 2 and the second lens 3 increases gradually along with the increase of the angle of light m and central shaft X, i.e. incident angle θ radially outward gradually the increasing along optical axis (the central shaft Xs of this first lens 2) perpendicular to this LED light source 4 of this light m on the interface of the first lens 2 and the second lens 3.And the angle of the exiting surface line of centres of the periphery of these the second lens 3 and LED light source 4 is greater than light m that LED light source 4 sends at the first lens 2 and the cirtical angle of total reflection degree θ on the interface of air
1.
When in the groove 26 of the first lens 2, the second lens 3 are not set, in the first lens 2 this bright dipping curved surface 211 of directive light in incidence angle be greater than θ
1light be totally reflected the inside getting back to the first lens 2, make to tail off from the light of the second lens 3 both sides outgoing, light extraction efficiency (light extraction efficiency) step-down.Be provided with these second lens 3 in the groove 26 of the first lens 2 after, the cirtical angle of total reflection θ of light m on the interface of the first lens 2 and the second lens 3
0be 71.63 degree, compared with when the second lens 3 are not set in the groove 26 of the first lens 2, make the light through the second lens 3 both sides outgoing increase after the second lens 3 are set in the groove 26 of these the first lens 2, be namely positioned at θ
1=39.57 degree to θ
0light between=71.63 degree enters to the second lens 3 of these lens 1 from the first lens 2 refraction of these lens 1, and light takes out (light extraction) efficiency and uprises.
Simultaneously, compared with when the second lens 3 are not set in the groove 26 of the first lens 2, reflect by bright dipping curved surface 211 central authorities of the first lens 2 light entering the second lens 3 central authorities (central shaft X near zone) after arranging the second lens 3 in the groove 26 of these the first lens 2 not reduce, this is because these light are all positioned at cirtical angle of total reflection θ
1in, thus these light by the bright dipping curved surface 211 of the first lens 2 central authorities refraction enter the second lens 3.But because the thickness of these the second lens 3 successively decreases towards the outer peripheral edge of exiting surface 21 gradually from the central authorities of the exiting surface 21 of these the first lens 2, this stop portions can enter the light of these the second lens 3 central authorities from the refraction of the bright dipping curved surface 211 of the first lens 2 central authorities, such that the light through the central outgoing of the second lens 3 reduces, light intensity is by partial impairment.
Refer to Fig. 5 and Fig. 6, as can be seen from Figure 5 when the groove 26 of the first lens 2 does not arrange these second lens 3, in the optical field distribution that the light that LED light source 4 sends is formed after the first lens 2 reflect, the beam intensity ratio at light field center (central shaft X near zone) is comparatively strong, and the light intensity being positioned at light field both sides is more weak.As can be seen from Figure 6 after the groove 26 of the first lens 2 arranges these second lens 3, the light that LED light source 4 sends is after lens 1 reflect, the light intensity grow of lens 1 both sides, and the light intensity at lens 1 center dies down, thus the light making LED light source 4 inject lens 1 forms uniform optical field distribution after lens 1 outgoing, the Huang of the bright spot and light field edge of effectively eliminating the formation of light field central authorities is swooned.
Refer to Fig. 7, with the light supply apparatus 10 described in Fig. 4 unlike, in the light supply apparatus 20 of second embodiment of the invention, in the second lens 3 of these lens 1 doped with scattering particles 33 to strengthen the dispersion effect of light.In the present embodiment, this scattering particles 33 is fluorescent powder grain, the light that this fluorescent powder grain sends for scattering and converted LED light source 4.When this LED light source 4 sends blue light, this fluorescent powder grain be preferably yellow fluorescent powder in order to some blue light is converted to gold-tinted and with residue blue light after form white light.
Further, the top of the second lens 3 of these lens 1 processes through atomization with the light of these the second lens 3 of scattering directive, in the present embodiment, the micro-recesses 34 of some micron-scale sizes is formed to strengthen light scattering effect through the top of the second lens 3 of atomization process.In other embodiments, can select to etch or the mode of photoetching forms the aperture of some micron-scale sizes or projection to strengthen light scattering effect at the top of the second lens 3.
Be understandable that, for the person of ordinary skill of the art, the change and distortion that other various picture answers can be made by technical conceive according to the present invention, and all these change the protection domain that all should belong to the claims in the present invention with distortion.
Claims (10)
1. lens, the second lens that these lens comprise the first lens and coordinate with these first lens, these first lens comprise incidence surface and the exiting surface relative with this incidence surface, it is characterized in that: described first lens have a groove, this groove caves in towards the first lens interior in the middle part of the exiting surface of the first lens, these second lens are arranged in the groove of these the first lens, described second lens comprise the incidence surface and the exiting surface relative with this incidence surface of fitting with the first lens exiting surface, and the refractive index of these the second lens is less than the refractive index of the first lens.
2. lens as claimed in claim 1, it is characterized in that: the exiting surface of these the first lens is the curved surface of an evagination, the incidence surface of these the first lens is the curved surface of an indent, and the exiting surface of these the first lens and the incidence surface of the first lens are axial symmetry face.
3. lens as claimed in claim 2, it is characterized in that: described first lens also comprise the installed surface of the incidence surface of these the first lens of a connection and the annular of exiting surface, the incidence surface of these the first lens is positioned at the central authorities of annular installed surface and caves in towards the first lens interior.
4. lens as claimed in claim 2, is characterized in that: the distance between the exiting surface of these the first lens and incidence surface first increases rear reduction from the periphery of exiting surface towards exiting surface central authorities.
5. lens as claimed in claim 2, is characterized in that: the exiting surface of described second lens is concordant with the exiting surface top of these the first lens.
6. lens as claimed in claim 5, is characterized in that: the thickness of described second lens successively decreases gradually towards the exiting surface periphery of the first lens in the middle part of the exiting surface of these the first lens.
7. lens as claimed in claim 2, is characterized in that: include fluorescent powder grain further in described second lens.
8. lens as claimed in claim 2, is characterized in that: the exiting surface of described second lens processes through atomization with the light of these the second lens of scattering directive.
9. lens as claimed in claim 3, it is characterized in that: the exiting surface of these the first lens comprises the cylinder extended vertically upward from the installed surface outer peripheral edge of these the first lens and the bright dipping curved surface being curved inwardly extension by this cylinder top perimeter, this groove is positioned at the bright dipping curved surface central authorities of the exiting surface of these the first lens.
10. a light supply apparatus, comprise at least one LED light source and at least one lens that arrange corresponding to this at least one LED light source, it is characterized in that: the lens of described lens according to any one of such as claim 2 to 9, the incidence surface of each LED light source and the first lens of corresponding lens is just to setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310338859.9A CN104344344A (en) | 2013-08-06 | 2013-08-06 | Lens and light source device using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310338859.9A CN104344344A (en) | 2013-08-06 | 2013-08-06 | Lens and light source device using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104344344A true CN104344344A (en) | 2015-02-11 |
Family
ID=52500520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310338859.9A Pending CN104344344A (en) | 2013-08-06 | 2013-08-06 | Lens and light source device using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104344344A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017113253A1 (en) * | 2015-12-30 | 2017-07-06 | 周肇梅 | Background module for liquid crystal display |
| CN106989317A (en) * | 2017-03-23 | 2017-07-28 | 厦门佰明光电股份有限公司 | A kind of lens and LED warning lamp |
| CN107490922A (en) * | 2016-06-13 | 2017-12-19 | 富港电子（东莞）有限公司 | Camera module |
| CN108279528A (en) * | 2018-01-17 | 2018-07-13 | 惠州市华星光电技术有限公司 | A kind of backlight |
| CN108386819A (en) * | 2018-05-15 | 2018-08-10 | 东莞市旭瑞光电科技有限公司 | A kind of optical lens |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5013144A (en) * | 1988-10-15 | 1991-05-07 | Hewlett-Packard Company | Light source having a multiply conic lens |
| CN101201415A (en) * | 2006-12-15 | 2008-06-18 | 鸿富锦精密工业（深圳）有限公司 | Light guide lens and LED containing the same |
| US20090279312A1 (en) * | 2004-10-18 | 2009-11-12 | Ju-Young Yoon | Light emitting diode and lens for the same |
| CN201425257Y (en) * | 2009-05-14 | 2010-03-17 | 上海广电光电子有限公司 | Led light source device |
| CN201680287U (en) * | 2009-12-21 | 2010-12-22 | 金芃 | LED surface light source optical lens |
| CN101988644A (en) * | 2009-07-31 | 2011-03-23 | 富准精密工业(深圳)有限公司 | Light-emitting diode (LED) module |
| CN102270629A (en) * | 2010-06-01 | 2011-12-07 | Lg伊诺特有限公司 | Light emitting device package and lighting system |
| CN202392611U (en) * | 2011-12-16 | 2012-08-22 | 深圳Tcl新技术有限公司 | High-power LED (light-emitting diode) and LED backlight module |
| WO2012130495A1 (en) * | 2011-03-29 | 2012-10-04 | Osram Opto Semiconductors Gmbh | Optical element and radiation-emitting device comprising such an optical element |
| CN103062707A (en) * | 2011-10-18 | 2013-04-24 | 一品光学工业股份有限公司 | Light-emitting diode lens and light source device thereof |
| CN103187513A (en) * | 2013-02-22 | 2013-07-03 | 慧创就光电有限公司 | Intensity scattering light-emitting diode (LED) device |
| CN103216786A (en) * | 2013-05-02 | 2013-07-24 | 深圳市裕富照明有限公司 | Light-emitting diode (LED) lens |
-
2013
- 2013-08-06 CN CN201310338859.9A patent/CN104344344A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5013144A (en) * | 1988-10-15 | 1991-05-07 | Hewlett-Packard Company | Light source having a multiply conic lens |
| US20090279312A1 (en) * | 2004-10-18 | 2009-11-12 | Ju-Young Yoon | Light emitting diode and lens for the same |
| CN101201415A (en) * | 2006-12-15 | 2008-06-18 | 鸿富锦精密工业（深圳）有限公司 | Light guide lens and LED containing the same |
| CN201425257Y (en) * | 2009-05-14 | 2010-03-17 | 上海广电光电子有限公司 | Led light source device |
| CN101988644A (en) * | 2009-07-31 | 2011-03-23 | 富准精密工业(深圳)有限公司 | Light-emitting diode (LED) module |
| CN201680287U (en) * | 2009-12-21 | 2010-12-22 | 金芃 | LED surface light source optical lens |
| CN102270629A (en) * | 2010-06-01 | 2011-12-07 | Lg伊诺特有限公司 | Light emitting device package and lighting system |
| WO2012130495A1 (en) * | 2011-03-29 | 2012-10-04 | Osram Opto Semiconductors Gmbh | Optical element and radiation-emitting device comprising such an optical element |
| CN103062707A (en) * | 2011-10-18 | 2013-04-24 | 一品光学工业股份有限公司 | Light-emitting diode lens and light source device thereof |
| CN202392611U (en) * | 2011-12-16 | 2012-08-22 | 深圳Tcl新技术有限公司 | High-power LED (light-emitting diode) and LED backlight module |
| CN103187513A (en) * | 2013-02-22 | 2013-07-03 | 慧创就光电有限公司 | Intensity scattering light-emitting diode (LED) device |
| CN103216786A (en) * | 2013-05-02 | 2013-07-24 | 深圳市裕富照明有限公司 | Light-emitting diode (LED) lens |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017113253A1 (en) * | 2015-12-30 | 2017-07-06 | 周肇梅 | Background module for liquid crystal display |
| CN107490922A (en) * | 2016-06-13 | 2017-12-19 | 富港电子（东莞）有限公司 | Camera module |
| CN106989317A (en) * | 2017-03-23 | 2017-07-28 | 厦门佰明光电股份有限公司 | A kind of lens and LED warning lamp |
| CN106989317B (en) * | 2017-03-23 | 2023-08-11 | 厦门佰明光电股份有限公司 | Lens and LED warning lamp |
| CN108279528A (en) * | 2018-01-17 | 2018-07-13 | 惠州市华星光电技术有限公司 | A kind of backlight |
| CN108386819A (en) * | 2018-05-15 | 2018-08-10 | 东莞市旭瑞光电科技有限公司 | A kind of optical lens |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104344344A (en) | Lens and light source device using same | |
| TWI582344B (en) | Lens and light source device incorporating the same | |
| CN102203964A (en) | Led with molded bi-directional optics | |
| CN201680288U (en) | Area light source lens of LED point light source | |
| CN201281290Y (en) | Both-side illuminating optical lens | |
| US9335023B2 (en) | Quantum dot lens and manufacturing method thereof | |
| CN102073092A (en) | Light guide plate, illuminating device and method for manufacturing light guide plate | |
| JP2016110869A (en) | Light-emitting device and light flux control member | |
| CN104421832A (en) | Lens and light-emitting element comprising same | |
| US9323095B2 (en) | Lens with light-diffusion capping layers and backlight module incorporating the same | |
| CN104566211A (en) | Compound lens and light source device using compound lens | |
| CN205560626U (en) | Grading lens and adopt lighting device of these grading lens | |
| CN204496037U (en) | A kind of reflective lens | |
| CN103901524A (en) | Light guide plate and manufacturing method thereof | |
| TW201500775A (en) | Lens and light source device with the same | |
| US9335450B2 (en) | Optical element and method for manufacturing the same | |
| CN106257316A (en) | Composite pattern light guide plate and manufacture method thereof | |
| CN201974542U (en) | Light guiding board and illuminating apparatus | |
| CN104235758A (en) | Lens, light guiding cover with same and illuminating device comprising lens | |
| CN203880606U (en) | Lens structure composed of diffusion particles | |
| CN103775970A (en) | Diffuser plate, manufacturing method thereof and backlight module | |
| CN104515029A (en) | Lateral type backlight module | |
| CN104421834A (en) | Compound lens and manufacturing method thereof and light source device using same | |
| CN104165329A (en) | Reflective sheet capable of conducting plastic absorption | |
| CN104180298A (en) | Total-reflection type light projection lens and lamp using light projection lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150211 |