CN104344334A - Lens and light source module using same - Google Patents
Lens and light source module using same Download PDFInfo
- Publication number
- CN104344334A CN104344334A CN201310327815.6A CN201310327815A CN104344334A CN 104344334 A CN104344334 A CN 104344334A CN 201310327815 A CN201310327815 A CN 201310327815A CN 104344334 A CN104344334 A CN 104344334A
- Authority
- CN
- China
- Prior art keywords
- lens
- light source
- light
- source module
- incidence surface
- 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
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a lens which is used for adjusting light emitted by a light source. The lens comprises a light incoming face, a light outgoing face and a bottom face, the light incoming face concaves from the bottom face to the inside of the lens, the top of the light incoming face protrudes in the direction of the bottom face to form a diverging portion, the light outgoing face is positioned above the light incoming face, and part of forward light emitted by the light source is diverged through the diverging portion to be emitted out from the side direction of the lens. The invention further provides a light source module using the lens.
Description
Technical field
The present invention relates to a kind of lens and apply the light source module of these lens.
Background technology
Compared to traditional light emitting source, light emitting diode (Light Emitting Diode, LED) there is the advantages such as lightweight, volume is little, it is low to pollute, the life-span is long, it is as a kind of novel light emitting source, applied more and more widely, such as, in backlight module, light emitting diode is applied in a large number at present.
In backlight module, usually the light emitting diode of some is installed in side or the bottom of light guide plate, utilizes light emitting diode to realize the illumination of light guide plate.But limited and its forward light intensity of the rising angle of light emitting diode is much larger than side direction light intensity, backlight module bright dipping can be caused so uneven, thus occur bright blanking bar and luminous point.In the prior art, for solving the problem, often needing the quantity of the light emitting diode increasing installing, thus reaching better illuminating effect.But the electric power that the usage quantity of light emitting diode consumes more at most also can be higher, thus can cause the rising of cost.
Summary of the invention
In view of this, be necessary to provide a kind of lens reduced costs and the light source module applying these lens.
A kind of lens, it adjusts for the light sent light source.These lens comprise incidence surface, exiting surface and bottom surface.Described incidence surface caves in lens interior from bottom surface, and the top of incidence surface is outstanding towards direction, bottom surface, forms one and disperses portion.Described exiting surface is positioned at the top of incidence surface.Part forward light the dispersing through the portion of dispersing that light source sends, penetrates from the side direction of described lens.
A kind of light source module, it comprises light source and above-mentioned lens.
In above-mentioned lens and light source module, the incidence surface of lens caves in lens interior from bottom surface, and its top forms one disperses portion, the forward light that light source sends can incide this and disperse in portion, wherein part forward light is dispersed by this portion of dispersing, and this some light is penetrated by towards the side direction departing from lens axis, thus while weakening the forward light intensity of light source, increase side direction light intensity and rising angle, make that the rising angle of light source module is larger, luminous intensity is more even.Thus, lens only need a small amount of light source of collocation can realize the illuminating effect of wide scope, thus are conducive to reducing costs.
Accompanying drawing explanation
Fig. 1 is the sectional view of the light source module in embodiment of the present invention.
Fig. 2 is the perspective view of the lens of light source module in Fig. 1.
Fig. 3 is the inversion perspective view of the lens in Fig. 2.
Fig. 4 is the sectional views of the lens in Fig. 2 along IV-IV direction.
Main element symbol description
| Light source module | 100 |
| Lens | 10 |
| Light source | 20 |
| Incidence surface | 11 |
| Exiting surface | 12 |
| Bottom surface | 13 |
| Side | 14 |
| Groove | 15 |
| Disperse portion | 111 |
| Plane | 121 |
| Cambered surface | 122 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Refer to Fig. 1, a kind of light source module 100 that embodiment of the present invention provides comprises lens 10 and is arranged at the light source 20 in these lens 10.
Please then consult Fig. 2 to Fig. 4, described lens 10 are roughly in a cylindrical shape, and it comprises incidence surface 11, exiting surface 12, bottom surface 13 and side 14.Described bottom surface 13 is a circular flat, and its center forms a groove 15 to lens 10 inner recess, and the inner surface of this groove 15 forms described incidence surface 11.Described incidence surface 11 is the optical axis coincidence of a curved surface, its axis and lens 10.The top of described incidence surface 11 is outstanding towards direction, described bottom surface 13, forms one and disperses portion 111.This disperses portion 111 in an inverted cone shape, and its summit is positioned on the optical axis of described lens 10.
Described exiting surface 12 correspondence is positioned at the top of described bottom surface 13, and it comprises the plane 121 of the circle being positioned at central authorities and is positioned at the cambered surface 122 of this plane 121 periphery.Described plane 121 is positioned at the top of incidence surface 11, and it is centrally located on the optical axis of described lens 10.Described cambered surface 122 is bent downwardly extension gradually by the periphery of plane 121.Described plane 121 is in smoothing junction with described cambered surface 122.In the present embodiment, the line at center, on described exiting surface 12 and described bottom surface 13 and the angle of lens 10 optical axis-45 spending ~+45 spend between region be described plane 121, the region exceeding this angle is then be bent downwardly gradually to extend to form described cambered surface 122.In other words, the outer peripheral edge of plane 121 and the line at center, bottom surface 13 are 45 degree relative to the angle of lens 10 optical axis.
The edge-perpendicular of described side 14 from bottom surface 13 upwards extends and is connected to the edge of the cambered surface 122 of exiting surface 12.This side 14 is cylindric, and its center of circle is positioned on the optical axis of lens 10.
Described light source 20 is arranged in the groove 15 of described lens 10, the optical axis coincidence of its central shaft and lens 10.In the present embodiment, described light source 20 is light emitting diode.
Please then consult Fig. 1, described light source module 100 in use, the light that light source 20 sends enters into lens 10 through incidence surface 11, wherein forward light is to the portion of dispersing 111 of incidence surface 11, thus, part forward light is by the portion of dispersing 111, penetrated by the exiting surface 12 of lens 10, part forward light is reflected by the portion of dispersing 111, this some light is dispersed by towards the side direction departing from lens 10 optical axis, thus while weakening the forward light intensity of light source 20, increase side direction light intensity and rising angle, so, the adjustment of the rays pass through lens 10 that light source 20 sends, the gap of the light intensity of forward emergent ray and the light intensity of side direction emergent ray reduces, thus make the rising angle of light source module 100 larger, luminous intensity is more even.
Be understandable that, can also packaging body be filled in the groove 15 of lens 10, and cover light source 20, to protect light source 20 from the impact such as dust, steam.
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 (9)
1. lens, it adjusts for the light sent light source, it is characterized in that: described lens comprise incidence surface, exiting surface and bottom surface, described incidence surface caves in lens interior from bottom surface, and the top of incidence surface is outstanding towards direction, bottom surface, formed and disperse portion, described exiting surface is positioned at the top of incidence surface, part forward light the dispersing through the portion of dispersing that light source sends, penetrates from the side direction of described lens.
2. lens as claimed in claim 1, is characterized in that: described incidence surface is the optical axis coincidence of a curved surface, its axis and described lens.
3. lens as claimed in claim 1, is characterized in that: described in the portion of dispersing be an inverted cone shape, its summit is positioned on the optical axis of described lens.
4. lens as claimed in claim 1, is characterized in that: described exiting surface comprises the plane that is positioned at central authorities and by the reclinate cambered surface of the periphery of this plane.
5. lens as claimed in claim 4, is characterized in that: the line of any point in the plane of described exiting surface and described bottom center and the angle of described lens axis-45 spending ~+45 spend between.
6. lens as claimed in claim 1, is characterized in that: described lens also comprise the side at the edge connecting the edge of bottom surface and the cambered surface of exiting surface.
7. a light source module, it comprises light source and the lens as described in claim 1-6 any one.
8. light source module as claimed in claim 7, it is characterized in that: described incidence surface surrounds a groove, described light source is arranged in described groove.
9. light source module as claimed in claim 7, is characterized in that: the central shaft of described light source and the optical axis coincidence of described lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310327815.6A CN104344334A (en) | 2013-07-31 | 2013-07-31 | Lens and light source module using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310327815.6A CN104344334A (en) | 2013-07-31 | 2013-07-31 | Lens and light source module using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104344334A true CN104344334A (en) | 2015-02-11 |
Family
ID=52500510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310327815.6A Pending CN104344334A (en) | 2013-07-31 | 2013-07-31 | Lens and light source module using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104344334A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110864245A (en) * | 2019-12-27 | 2020-03-06 | 西安智海电力科技有限公司 | Lighting device with high light efficiency utilization rate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1866053A (en) * | 2005-05-16 | 2006-11-22 | 中强光电股份有限公司 | Side lighting type lens assembly |
| EP1989575B1 (en) * | 2006-02-28 | 2011-03-23 | Ghollam Tahmosybayat | Lens assembly |
| CN202955624U (en) * | 2012-04-25 | 2013-05-29 | 扬州雷笛克光学公司 | Lens with residual light resistant structure and module thereof |
| CN103163576A (en) * | 2011-12-14 | 2013-06-19 | 一品光学工业股份有限公司 | Light-emitting diode lens and light-emitting device thereof |
| CN104037312A (en) * | 2013-03-06 | 2014-09-10 | 鸿富锦精密工业（深圳）有限公司 | Lens and light emitting diode packaging structure using same |
-
2013
- 2013-07-31 CN CN201310327815.6A patent/CN104344334A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1866053A (en) * | 2005-05-16 | 2006-11-22 | 中强光电股份有限公司 | Side lighting type lens assembly |
| EP1989575B1 (en) * | 2006-02-28 | 2011-03-23 | Ghollam Tahmosybayat | Lens assembly |
| CN103163576A (en) * | 2011-12-14 | 2013-06-19 | 一品光学工业股份有限公司 | Light-emitting diode lens and light-emitting device thereof |
| CN202955624U (en) * | 2012-04-25 | 2013-05-29 | 扬州雷笛克光学公司 | Lens with residual light resistant structure and module thereof |
| CN104037312A (en) * | 2013-03-06 | 2014-09-10 | 鸿富锦精密工业（深圳）有限公司 | Lens and light emitting diode packaging structure using same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110864245A (en) * | 2019-12-27 | 2020-03-06 | 西安智海电力科技有限公司 | Lighting device with high light efficiency utilization rate |
| CN110864245B (en) * | 2019-12-27 | 2023-07-18 | 西安锐泽克斯光电科技有限公司 | Lighting device with high light efficiency utilization rate |
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| 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 |
Application publication date: 20150211 |
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| WD01 | Invention patent application deemed withdrawn after publication |