CN104296066A - Lens and power source module - Google Patents
Lens and power source module Download PDFInfo
- Publication number
- CN104296066A CN104296066A CN201310296136.7A CN201310296136A CN104296066A CN 104296066 A CN104296066 A CN 104296066A CN 201310296136 A CN201310296136 A CN 201310296136A CN 104296066 A CN104296066 A CN 104296066A
- Authority
- CN
- China
- Prior art keywords
- lens
- exiting
- incidence
- incidence surface
- light source
- 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
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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
- F21V5/043—Refractors for light sources of lens shape the lens having cylindrical faces, e.g. rod lenses, toric lenses
-
- 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
Abstract
The invention relates to a lens. The lens is used for adjusting light emitted by a power source and comprises a first lens, a second lens and a third lens, wherein the third lens covers the second lens; the second lens covers the first lens; the first lens, the second lens and the third lens are sequentially superposed; the refractive index of the third lens is smaller than that of the second lens; the refractive index of the second lens is smaller than that of the first lens; and light emitted by the light source sequentially passes through the first lens, the second lens and the third lens to be finally emitted out of the lens, so that light emitted into the lens can be better deflected to the side of the lens, accordingly, the forward light intensity is reduced, the side light intensity is enhanced and the viewing angle is enlarged. The invention also relates to a power source module employing the lens.
Description
Technical field
The present invention relates to optical field, particularly relate to a kind of lens and light source module thereof.
Background technology
Utilize its effect of the light fixture of conventional light source substantially can meet the demand of various aspects, but power consumption is too large, therefore light emitting diode (LED, Light Emitting Diode) has as the light source of a new generation the trend replacing conventional light source gradually.The light source of the backlight module of existing display is replaced by light emitting diode gradually.
Existing display backlight module is generally directly-down light source.The advantage of directly-down light source is the use of scioptics, and therefore a small amount of light emitting diode can satisfy the demands.Namely through lens, first time pH effect is carried out to the light of light emitting diode and forms the light comparatively dispersed, then inject diffuser plate and further spread, thus obtain emergent ray more uniformly.But the pH effect ability of existing lens is still not enough, therefore, how designing that light that a lens can make light emitting diode send disperses to both sides is better the problem that industry is sought always.
Summary of the invention
In view of this, the lens being necessary to provide a kind of light that light emitting diode can be made to send to disperse better and light source module thereof.
A kind of lens, it adjusts for the light sent light source, described lens comprise the first lens, the second lens and the 3rd lens, 3rd lens cover the second lens, second lens cover the first lens, first lens, the second lens and the 3rd lens are stacked successively, the refractive index of the 3rd lens is less than the refractive index of the second lens, the refractive index of the second lens is less than the refractive index of the first lens, and the light that light source sends finally shines its outer through the first lens, the second lens and the 3rd lens successively.
A kind of light source module, it comprises light source and above-mentioned lens.
The lens of embodiment of the present invention are owing to adopting the lens that three kinds of refractive indexes are different, when light enters the lower lens of refractive index from one deck that refractive index is higher, light deflects, thus can better make light deflect to the sidepiece of lens, reduce forward light intensity, strengthen side direction light intensity and expand rising angle.
Accompanying drawing explanation
The schematic perspective view of the lens that Fig. 1 provides for embodiment of the present invention.
Fig. 2 is the three-dimensional exploded view of the lens in Fig. 1.
Fig. 3 is that the lens in Fig. 1 form the sectional view of light source module along the sectional view of III-III and collocation light source.
Main element symbol description
| Light source module | 100 |
| Lens | 10 |
| First lens | 11 |
| First incidence surface | 111 |
| First exiting surface | 112 |
| Second lens | 12 |
| Second incidence surface | 121 |
| Second exiting surface | 122 |
| Concave surface | 1221 |
| Cambered surface | 1222 |
| Bottom surface | 123 |
| Side | 124、133 |
| 3rd lens | 13 |
| 3rd incidence surface | 131 |
| 3rd exiting surface | 132 |
| Light source | 20 |
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 and Fig. 2, the lens 10 that embodiment of the present invention provides comprise three lens, and the refractive index of these three lens is different.In the present embodiment, these three lens are respectively the first lens 11, second lens 12 and the 3rd lens 13, wherein the first lens 11 are positioned at the innermost layer of lens 10,3rd lens 13 are positioned at the outermost layer of lens 10, second lens 12 are between the first lens 11 and the 3rd lens 13, that is, the 3rd lens 13 cover the second lens 12, second lens 12 and cover the first lens 11.
Please refer to Fig. 3, lens 10 entirety is in cylinder.First lens 11 comprise the first incidence surface 111 and the first exiting surface 112.First incidence surface 111 is a plane, and the first exiting surface 112 is curved surface, and this curved surface upwards protrudes out from the first incidence surface 111 the level and smooth curved surface that formation one raises up.The axis of the first exiting surface 112 overlaps with the axis of lens 10.The slope in the first exiting surface 112 cross section reduces to lens 10 top gradually from the bottom of the first incidence surface 111, and in top horizontal slip.
Second lens 12 are arranged on the first lens 11.These second lens 12 comprise the second incidence surface 121, second exiting surface 122, bottom surface 123 and side 124.
Described second incidence surface 121 from bottom surface 123 to lens 10 inner recess.Second incidence surface 121 is curved surface, the shape of this curved surface is identical with the curve form of the first exiting surface 112 of the first lens 11, fits to be covered completely on the first lens 11 by the second lens 12 completely with the first exiting surface 112 of the second incidence surface 121 and the first lens 11 that make the second lens 12.In the present embodiment, the profile of this second incidence surface 121 is roughly an ellipsoid, and its minor axis is positioned in the plane at place, bottom surface 123, and major axis is vertical with bottom surface 123.After light incides the first lens 11 from the first incidence surface 111, through the refraction of the first exiting surface 112, light is dispersed towards the both sides of the first lens 11, and due to this kind of curve form of the first exiting surface 112, thus more light is deflected towards sidepiece.
Described second exiting surface 122 is located at above the second incidence surface 121.This second exiting surface 122 is aspheric surface, and it comprises the cambered surface 1222 of concave surface 1221 and concave surface 1221 periphery being positioned at center of top.This concave surface 1221 is positioned at the central authorities of lens 10, and just caves in the direction of the second incidence surface 121 towards the second incidence surface 121.This concave surface 1221 can be the cambered surface etc. of indent, for dispersing the forward light arriving concave surface 1221.This cambered surface 1222 is to the outwardly curved surface in the direction away from light source 20, and this cambered surface 1222 is in smoothing junction with concave surface 1221.
First incidence surface 111 of described bottom surface 123 and the first lens 11 is coplanar, and when covering on the first lens 11 to make the second lens 12, a plane is formed on both bottoms.
Described side 124 extends to form towards the direction parallel with the optical axis of lens 10 from bottom surface 123.This side 124 extend vertically upward along the direction of optical axis and with the edge of the second exiting surface 122 crossing formation second exiting surface 122.This side 124 is cylindric, and its center of circle is positioned on the optical axis of lens 10.This side 124 in the plane at place, bottom surface 123 be projected as one circle.
3rd lens 13 comprise the 3rd incidence surface 131, the 3rd exiting surface 132 and side 133.3rd incidence surface 131 is aspheric surface, and its curve form is identical with the second exiting surface 122 of the second lens 12, can be fitted in completely on the second exiting surface 122 of the second lens 12 to make the 3rd incidence surface 131 of the 3rd lens 13.3rd exiting surface 132 is plane, and it is vertical with the optical axis of lens 10.This side 133 connects the 3rd incidence surface 131 and the 3rd exiting surface 132.This side 133 to extend towards the direction parallel with the optical axis of lens 10 from the 3rd incidence surface 131 and crossingly with the 3rd exiting surface 132 to be formed.This side 133 is cylindric, and its center of circle is positioned on the optical axis of lens 10.This side 133 in the plane at the 3rd exiting surface 132 place be projected as one circle.
First lens 11, second lens 12 and the 3rd lens 13 stacked successively, first exiting surface 112 of the first lens 11 and the second incidence surface 121 of the second lens 12 is fitted, the second exiting surface 122 of the second lens 12 and the 3rd incidence surface 131 of the 3rd lens 13 are fitted, thus make the lens after combination 10 for cylindrical shape.Wherein, the first incidence surface 111 of the first lens 11 and the bottom surface 123 of the second lens 12 form a plane, and this plane is parallel with the 3rd exiting surface 132 of the 3rd lens 13.First lens 11, second lens 12 and the 3rd lens 13 adopt different materials to make respectively, wherein the refractive index of the material of the first lens 11 is greater than the refractive index of the material of the second lens 12, and the refractive index of the material of the second lens 12 is greater than the refractive index of the material of the 3rd lens 13.In the present embodiment, first lens 11 adopt optical grade glass material lead glass (ZF6), second lens 12 adopt dimethyl silicone polymer (polydimethylsiloxane, PDMS), 3rd lens 13 adopt polymethyl methacrylate (polymethylmethacrylate, PMMA).The dimethyl silicone polymer that wherein the second lens 12 adopt has good adhesiveness, can preferably in conjunction with the first lens 11 and the 3rd lens 13.
Light source 20 is arranged at the below of lens 10 thus forms a light source module 100.Further, light source 20 is light emitting diode, and the exiting surface of this light emitting diode is attached at the first incidence surface 111 of the first lens 11.The light of light source 20 outgoing directly injects lens 10, first enters the first lens 11, and when entering the second lens 12 from the first lens 11, the refractive index due to the first lens 11 is greater than the refractive index of the second lens 12, and therefore light is towards the lateral deflection of lens 10; When light enters the 3rd lens 13 from the second lens 12, the refractive index due to the second lens 12 is greater than the refractive index of the 3rd lens 13, and therefore light is further towards the lateral deflection of lens 10, reduces forward light intensity, strengthens side direction light intensity and expand rising angle.
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, it adjusts for the light sent light source, it is characterized in that: described lens comprise the first lens, the second lens and the 3rd lens, 3rd lens cover the second lens, second lens cover the first lens, first lens, the second lens and the 3rd lens are stacked successively, the refractive index of the 3rd lens is less than the refractive index of the second lens, the refractive index of the second lens is less than the refractive index of the first lens, and the light that light source sends finally shines its outer through the first lens, the second lens and the 3rd lens successively.
2. lens as claimed in claim 1, it is characterized in that: described first lens comprise the first incidence surface and the first exiting surface, second lens comprise the second incidence surface and the second exiting surface, first exiting surface is curved surface with the second incidence surface and shape is identical, and the second incidence surface and the first exiting surface are fitted and connected.
3. lens as claimed in claim 2, it is characterized in that: described 3rd lens comprise the 3rd incidence surface and the 3rd exiting surface, second exiting surface of the second lens is curved surface with the 3rd incidence surface of the 3rd lens and shape is identical, and the 3rd incidence surface and the second exiting surface are fitted and connected.
4. lens as claimed in claim 2, it is characterized in that: the second exiting surface of described second lens comprises the cambered surface of concave surface and the concave surface periphery being positioned at center of top, the direction depression of this concave surface facing second incidence surface, this cambered surface is towards the direction evagination away from the second incidence surface.
5. lens as claimed in claim 4, is characterized in that: described second lens also comprise bottom surface and side, and the first incidence surface of this bottom surface and the first lens is plane and coplanar, and this side being projected as on bottom surface one is justified.
6. lens as claimed in claim 5, it is characterized in that: described 3rd lens comprise the 3rd incidence surface and the 3rd exiting surface, second exiting surface of the 3rd incidence surface and the second lens is fitted, and the 3rd exiting surface is a plane parallel with the first incidence surface of the first lens.
7. lens as claimed in claim 6, is characterized in that: described 3rd lens also comprise side, and this side connects the 3rd incidence surface and the 3rd exiting surface, and this side is projected as a circle on the 3rd exiting surface.
8. lens as claimed in claim 1, is characterized in that: described first lens adopt optical grade glass material lead glass to manufacture, and the second lens adopt dimethyl silicone polymer manufacture, and the 3rd lens adopt polymethyl methacrylate manufacture.
9. a light source module, it comprises light source and the lens as described in claim 1-8 any one.
10. light source module as claimed in claim 9, it is characterized in that: described light source is light emitting diode, the exiting surface of this light emitting diode is attached at the first incidence surface of the first lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310296136.7A CN104296066A (en) | 2013-07-16 | 2013-07-16 | Lens and power source module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310296136.7A CN104296066A (en) | 2013-07-16 | 2013-07-16 | Lens and power source module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104296066A true CN104296066A (en) | 2015-01-21 |
Family
ID=52315911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310296136.7A Pending CN104296066A (en) | 2013-07-16 | 2013-07-16 | Lens and power source module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104296066A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344332A (en) * | 2013-07-29 | 2015-02-11 | 鸿富锦精密工业（深圳）有限公司 | Lens module and light source module comprising lens module |
| CN105605529A (en) * | 2016-03-16 | 2016-05-25 | 京东方科技集团股份有限公司 | Lens, illuminating device and display device |
| CN106681052A (en) * | 2016-11-16 | 2017-05-17 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN113419299A (en) * | 2021-05-31 | 2021-09-21 | 歌尔光学科技有限公司 | Optical lens, optical lens group and projection optical system |
-
2013
- 2013-07-16 CN CN201310296136.7A patent/CN104296066A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344332A (en) * | 2013-07-29 | 2015-02-11 | 鸿富锦精密工业（深圳）有限公司 | Lens module and light source module comprising lens module |
| CN105605529A (en) * | 2016-03-16 | 2016-05-25 | 京东方科技集团股份有限公司 | Lens, illuminating device and display device |
| CN106681052A (en) * | 2016-11-16 | 2017-05-17 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN113419299A (en) * | 2021-05-31 | 2021-09-21 | 歌尔光学科技有限公司 | Optical lens, optical lens group and projection optical system |
| CN113419299B (en) * | 2021-05-31 | 2023-09-22 | 歌尔光学科技有限公司 | Optical lens, optical lens group and projection optical system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150121 |