CN104566203A - Lens and light source module using lens - Google Patents
Lens and light source module using lens Download PDFInfo
- Publication number
- CN104566203A CN104566203A CN201310474693.3A CN201310474693A CN104566203A CN 104566203 A CN104566203 A CN 104566203A CN 201310474693 A CN201310474693 A CN 201310474693A CN 104566203 A CN104566203 A CN 104566203A
- Authority
- CN
- China
- Prior art keywords
- lens
- light
- light source
- incidence surface
- exiting
- 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.)
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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
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
- F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
-
- 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)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a light source module. The light source module comprises a light source and a lens over against the light source, wherein the lens comprises a light-incoming surface over against the light source, a light-exiting surface opposite to the light-incoming surface and a connection surface which is used for connecting the light-incoming surface with the light-exiting surface; the connection surface is an annular plane which is arranged around the light-incoming surface; the light-exiting surface is butted with the outer periphery of the connection surface; the light-incoming surface comprises a top wall surface above the light-incoming surface and a side wall surface which is formed by extending the outer periphery of the connection surface upwards and butted with the outer periphery of the top wall surface; the top wall surface comprises a central surface right above the light-incoming surface, a first curved surface arranged around the central surface and a second curved surface arranged around the first curved surface and smoothly butted with the first curved surface. Compared with the prior art, the optical effects of reducing front light intensity, improving lateral light intensity and enlarging light-exiting angle are realized by the light source module.
Description
Technical field
The present invention relates to optical field, particularly relate to a kind of lens and use the light source module of these lens.
Background technology
At present, in the middle of back lighting, in order to uniform light, diverging lens of usually arranging in pairs or groups uses, and the light that light source is sent with larger angle outgoing, thus can reach the effect of large area lighting.
But in actual use, the light that light source sends, after the diffusion of lens, because light is more concentrated near the optical axis of light source, sometimes can not be eliminated the yellow dizzy phenomenon of central bright spot and edge completely, be unfavorable for back lighting.
Summary of the invention
In view of this, be necessary to provide a kind of can emit beam to light source make the lens that directive property is improved and the light source module using these lens.
A kind of lens, light in order to send a light source adjusts, these lens comprise with light source just to the incidence surface arranged, the exiting surface be oppositely arranged with this incidence surface and be connected the joint face of this incidence surface and exiting surface, described joint face is the ring plain arranged around this incidence surface, the outer peripheral edge of described exiting surface and joint face connects, described exiting surface comprises the roof face that is positioned at above described incidence surface and upwards extends to form from the outer peripheral edge of described joint face, and the side wall surface connected with the outer peripheral edge in this roof face, described roof face comprises the first surface that is positioned at median plane directly over this incidence surface and arrange around this median plane and arranges around this first surface and the second curved surface smoothly docked with this first surface.
A kind of light source module, comprise a light source and just to the lens that this light source is arranged, these lens comprise with light source just to the incidence surface arranged, the exiting surface be oppositely arranged with this incidence surface and be connected the joint face of this incidence surface and exiting surface, described joint face is the ring plain arranged around this incidence surface, the outer peripheral edge of described exiting surface and joint face connects, described exiting surface comprises the roof face that is positioned at above described incidence surface and upwards extends to form from the outer peripheral edge of described joint face, and the side wall surface connected with the outer peripheral edge in this roof face, described roof face comprises the first surface that is positioned at median plane directly over this incidence surface and arrange around this median plane and arranges around this first surface and the second curved surface smoothly docked with this first surface.
In using, the light sent when described light source after the incidence surface of lens enters lens, via the exiting surface injection lens of described lens.From light source relative to its optical axis with the light of smaller angle outgoing respectively through after the refraction of the median plane of lens, first surface, the second curved surface and side wall surface with relative to its optical axis larger angle outgoing, make light towards all sides directional divergence of lens.Compared with prior art, light source module of the present invention achieves and reduces forward light intensity, strengthens side direction light intensity and expand the optical effect of rising angle.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the light source module of one embodiment of the invention.
Fig. 2 is the inversion schematic diagram of the lens of the light source module shown in Fig. 1.
Fig. 3 is for the light source module shown in Fig. 1 is along the cross-sectional schematic of III-III line.
Fig. 4 is for the light source module shown in Fig. 1 is at different conditions along the brightness value change schematic diagram measured by its forward light direction.
Main element symbol description
| Light source module | 100 |
| Light source | 10 |
| Pedestal | 12 |
| Light-emitting diode chip for backlight unit | 14 |
| Lens | 20 |
| Incidence surface | 21 |
| Exiting surface | 22 |
| Roof face | 221 |
| First surface | 2210 |
| Second curved surface | 2212 |
| Side wall surface | 222 |
| Joint face | 23 |
| Accommodation space | 24 |
| Leg | 25 |
| Scattering particles | 30 |
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 light source module 100 that one embodiment of the invention provides comprises a light source 10, the lens 20 just arranged this light source 10 and some scattering particles 30 of being formed in these lens 20.Described lens 20 comprise the exiting surface 22 be just oppositely arranged the incidence surface 21 arranged and this incidence surface 21 with light source 10 and the joint face 23 being connected this incidence surface 21 and exiting surface 22.Described light source 10 has an optical axis I.The light that this light source 10 sends roughly is distributed in the Space Angle in 180 degree relative to this optical axis I, and wherein most of light is relative in the Space Angle of this optical axis I integrated distribution in 120 degree.
In the present embodiment, described light source 10 is light emitting diode, comprises pedestal 12 and is fixed on the light-emitting diode chip for backlight unit 14 on pedestal 12.Described pedestal 12 is made up of insulating materials such as epoxy resin, silica gel or potteries.Described light-emitting diode chip for backlight unit 14 is made up of semi-conducting materials such as gallium nitride, InGaN, aluminum indium gallium nitride, and it can excite generation visible ray by electric current.
Said lens 20 is made into integration by the transparent material such as Merlon or polymethyl methacrylate, also can layering make.Can have fluorescent material by Uniform Doped further in described lens 20, fluorescent material can be made up of the fluorescent material such as yttrium-aluminium-garnet, silicate.
Described lens 20 to be positioned at directly over described light source 10 and and this light source 10 interval arrange.Described incidence surface 21 is formed to this lens 20 inner recess by the middle part of the bottom surface of these lens 20.Described joint face 23 is around the ring plain that this incidence surface 21 is arranged in the bottom surface of these lens 20.Described exiting surface 22 comprise the roof face 221 that is positioned at above described incidence surface 21 and upwards extend to form from the outer peripheral edge of described joint face 23 and the side wall surface 222 connected with the outer peripheral edge in this roof face 221.In the present embodiment, described side wall surface 222 is cylinder, and understandably, described side wall surface 222 also can be the conical surface or surface of revolution.In use, described lens 20 joint face 23 with fit in order to the mounting plane (not shown) carrying described lens 20.The bottom peripheral edge of the side wall surface 222 of described exiting surface 22 and the outer peripheral edge of joint face 23 connect.In the present embodiment, the incidence surface 21 of these lens 20 is a free form surface, and understandably, the incidence surface 21 of these lens 20 also can be ellipsoid, sphere or parabola.The incidence surface 21 of these lens 20 surrounds an accommodation space 24 in order to accommodate described light source 10.The roof face 221 of this exiting surface 22 comprise a first surface 2210 and around this first surface 2210 arrange and with one second curved surface 2212 of this first surface 2210 smooth connection.Described first surface 2210 is formed to this lens 20 inner recess by the middle part of the end face of these lens 20.In the present embodiment, the first surface 2210 in the roof face 221 of this exiting surface 22 is a free form surface, and understandably, this first surface 2210 also can be ellipsoid, sphere or parabola.Second curved surface 2212 in the roof face 221 of described exiting surface 22 bends towards the direction away from incidence surface 21.In the present embodiment, this second curved surface 2212 is a free form surface, and understandably, this second curved surface 2212 also can be ellipsoid, sphere or parabola.
In the present embodiment, axially symmetric structure centered by described lens 20, it has a central shaft X.The incidence surface 21 of these lens 20 is that central shaft is symmetrical about the central shaft X of these lens 20.The exiting surface 22 of these lens 20 is that central shaft is symmetrical about the central shaft X of these lens 20.The first surface 2210 of this exiting surface 22 is that central shaft is symmetrical about the central shaft X of these lens 20.Second curved surface 2212 of this exiting surface 22 is that central shaft is symmetrical about the central shaft X of these lens 20.The joint face 23 of these lens 20 is perpendicular to the central shaft X of these lens 20.The joint face 23 of these lens 20 is perpendicular to side wall surface 222.The optical axis I of described the light source 10 and central shaft X of this lens 20 coincides and arranges.
Described lens 20 comprise the some legs 25 protruded out by joint face 23 further downwards.These legs 25 are even, interval is arranged, in order to support and to fix described lens 20.In the present embodiment, described leg 25 is in round table-like.
Above-mentioned scattering particles 30 is distributed in the inside of described lens 20 brokenly.In the present embodiment, described scattering particles 30 Arbitrary distribution is in the whole inside of lens 20, understandably, according to actual bright dipping needs, described scattering particles 30 can in the processing procedure of lens 20 optionally integrated distribution at the portion of described lens 20 inside, as near as described in the region of incidence surface 21 of lens 20.Described scattering particles 30 by titanium compound (as TiO
2), silicon compound is (as SiO
3or SiO
2) etc. material make.Each scattering particles 30 is spheroidal particle.The component ratio that described scattering particles 30 adulterates in lens 20 is preferably described scattering particles correspondence and accounts for 2%.
Please refer to Fig. 1 to Fig. 3, in using, the light sent when described light source 10 is after the incidence surface 21 of lens 20 enters lens 20, because lens 20 are thinner on thickness compared with the peripheral region outside central region in central region, described scattering particles 30 is distributed also less, the light sent from light source 10 is affected the bright dipping of lens 20 central region is less, namely major part still towards relative to its optical axis I with smaller angle outgoing, and the reflection of described scattering particles 30 is subject to from the bright dipping of the peripheral region of light source 10 outside lens 20 central region, wherein some light can turn to relative to its optical axis I with smaller angle outgoing, finally all light is again through the first surface 2210 of lens 20, by exiting surface 22 outgoing after second curved surface 2212 and side wall surface 222 reflect.
Compared with prior art, the light that light source module 100 of the present invention makes light source 10 send Relatively centralized after lens 20 is distributed near the optical axis I of light source 10, namely Relatively centralized is distributed in the middle part of the forward light emission direction of described light source 10, also improves the average luminance of light source module 100 orthodromic illumination simultaneously.Specifically refer to Fig. 4, be depicted as the change schematic diagram at different conditions of the brightness value on forward light direction of light source module 100 of the present invention, diagram ordinate is for measuring gained luminance values, and abscissa is for by upwards linearly got to peripheral region again to central region along its peripheral region 21 measured zone of the positive the other side of lens 20.Wherein, article 5, the condition that brightness value curve is got respectively does not add scattering particles 30 in lens 20, in lens 20, adding ingredient ratio is the scattering particles 30 of 0.5%, in lens 20, adding ingredient ratio is the scattering particles 30 of 1%, in lens 20 adding ingredient ratio be 1.5% scattering particles 30 and lens 20 in adding ingredient ratio be 2% scattering particles 30, the corresponding brightness value in middle part of brightness value curve corresponding under not adding the condition of scattering particles 30 in lens 20 is relatively minimum, then along with scattering particles 30 is in the increase of lens 20 component ratio, the brightness value (being also maximum brightness value) of the middle part correspondence of brightness value curve is increasing, simultaneously, the average luminance value that whole brightness value curve is corresponding is also increasing.
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, comprise with light source just to the incidence surface arranged, the exiting surface be oppositely arranged with this incidence surface and be connected the joint face of this incidence surface and exiting surface, described joint face is the ring plain arranged around this incidence surface, the outer peripheral edge of described exiting surface and joint face connects, described exiting surface comprises the roof face that is positioned at above described incidence surface and upwards extends to form from the outer peripheral edge of described joint face, and the side wall surface connected with the outer peripheral edge in this roof face, it is characterized in that: described roof face comprise be positioned at first surface directly over incidence surface and around this first surface arrange and with the second curved surface of this first surface smooth connection, described lens comprise the some scattering particles be formed in these lens further, these scattering particles in order to reflected illumination to the light on it.
2. lens as claimed in claim 1, is characterized in that: described scattering particles is made by titanium compound or rail compound-material.
3. lens as claimed in claim 1, is characterized in that: each scattering particles is spheroidal particle.
4. lens as claimed in claim 2, is characterized in that: the component ratio that described scattering particles adulterates in lens is 2%.
5. lens as claimed in claim 1, is characterized in that: described first surface bends towards the direction near incidence surface, and described first surface is any one in free form surface, ellipsoid, sphere, parabola.
6. lens as claimed in claim 1, it is characterized in that: described second curved surface is ring-type curved surface, and it bends towards the direction away from incidence surface, described second curved surface is any one in free form surface, ellipsoid, sphere, parabola.
7. lens as claimed in claim 1, is characterized in that: described incidence surface is formed by caving in this lens interior in the middle part of the bottom surface of these lens, and described incidence surface is any one in free form surface, ellipsoid, sphere, parabola.
8. lens as claimed in claim 1, it is characterized in that: axially symmetric structure centered by described lens, it has a central shaft.
9. lens as claimed in claim 8, is characterized in that: described incidence surface be that central shaft is symmetrical about the central shaft of these lens, and the exiting surface of these lens is central shaft symmetry about the central shaft of these lens, and the joint face of these lens is perpendicular to the central shaft of these lens.
10. a light source module, comprises a light source and just to the lens that this light source is arranged, it is characterized in that: these lens are lens as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310474693.3A CN104566203A (en) | 2013-10-12 | 2013-10-12 | Lens and light source module using lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310474693.3A CN104566203A (en) | 2013-10-12 | 2013-10-12 | Lens and light source module using lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104566203A true CN104566203A (en) | 2015-04-29 |
Family
ID=53082909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310474693.3A Pending CN104566203A (en) | 2013-10-12 | 2013-10-12 | Lens and light source module using lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104566203A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302471A (en) * | 2016-09-14 | 2018-07-20 | 英属维尔京群岛商博伦思国际股份有限公司 | Optical module and optical element |
| CN108775554A (en) * | 2018-06-27 | 2018-11-09 | 苏州欧普照明有限公司 | A kind of lens and lamp box |
| CN110579930A (en) * | 2018-06-11 | 2019-12-17 | 深圳Tcl新技术有限公司 | Laser projection television |
| CN111221058A (en) * | 2020-01-16 | 2020-06-02 | 深圳市海洋王照明工程有限公司 | Lens structure, processing technology thereof and lamp |
| JP2020518869A (en) * | 2017-05-08 | 2020-06-25 | ジェイ−テック カンパニー リミテッドＪ−Ｔｅｋ Ｃｏ．， Ｌｔｄ． | Diffusing lens and light emitting device employing the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090207586A1 (en) * | 2008-02-15 | 2009-08-20 | Sony Corporation | Lens, light source unit, backlight apparatus, and display apparatus |
| CN102074645A (en) * | 2009-11-19 | 2011-05-25 | Lg伊诺特有限公司 | Lens and light emitting apparatus having the same |
| CN102102847A (en) * | 2009-12-21 | 2011-06-22 | 金芃 | LED (light emitting diode) area light source lens |
| 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 |
-
2013
- 2013-10-12 CN CN201310474693.3A patent/CN104566203A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090207586A1 (en) * | 2008-02-15 | 2009-08-20 | Sony Corporation | Lens, light source unit, backlight apparatus, and display apparatus |
| CN102074645A (en) * | 2009-11-19 | 2011-05-25 | Lg伊诺特有限公司 | Lens and light emitting apparatus having the same |
| CN102102847A (en) * | 2009-12-21 | 2011-06-22 | 金芃 | LED (light emitting diode) area light source lens |
| 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 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302471A (en) * | 2016-09-14 | 2018-07-20 | 英属维尔京群岛商博伦思国际股份有限公司 | Optical module and optical element |
| CN108302471B (en) * | 2016-09-14 | 2020-08-28 | 英属维尔京群岛商博伦思国际股份有限公司 | Optical module and optical element |
| JP2020518869A (en) * | 2017-05-08 | 2020-06-25 | ジェイ−テック カンパニー リミテッドＪ−Ｔｅｋ Ｃｏ．， Ｌｔｄ． | Diffusing lens and light emitting device employing the same |
| CN110579930A (en) * | 2018-06-11 | 2019-12-17 | 深圳Tcl新技术有限公司 | Laser projection television |
| CN108775554A (en) * | 2018-06-27 | 2018-11-09 | 苏州欧普照明有限公司 | A kind of lens and lamp box |
| CN108775554B (en) * | 2018-06-27 | 2023-09-29 | 苏州欧普照明有限公司 | Lens and lamp box |
| CN111221058A (en) * | 2020-01-16 | 2020-06-02 | 深圳市海洋王照明工程有限公司 | Lens structure, processing technology thereof and lamp |
| CN111221058B (en) * | 2020-01-16 | 2022-05-17 | 深圳市海洋王照明工程有限公司 | Lens structure, processing technology thereof and lamp |
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Application publication date: 20150429 |
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| RJ01 | Rejection of invention patent application after publication |