CN104676482A - Lens and light source module with same - Google Patents
Lens and light source module with same Download PDFInfo
- Publication number
- CN104676482A CN104676482A CN201310634659.8A CN201310634659A CN104676482A CN 104676482 A CN104676482 A CN 104676482A CN 201310634659 A CN201310634659 A CN 201310634659A CN 104676482 A CN104676482 A CN 104676482A
- Authority
- CN
- China
- Prior art keywords
- lens
- light
- light source
- curved surface
- optical axis
- 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
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- 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
- F21V5/046—Refractors for light sources of lens shape the lens having a rotationally symmetrical shape about an axis for transmitting light in a direction mainly perpendicular to this axis, e.g. ring or annular lens with light source disposed inside the ring
Abstract
The invention provides a lens. The lens is a rotary paraboloidal revolution body of which a revolution shaft is an optical axis; a rotary paraboloid is arranged in the periphery of the lens; the large end of the lens comprises a first curved surface and a second curved surface; the second curved surface is arranged around the first curved surface; a light source storing cavity is formed in the small end of the lens, comprising a bottom part and a sidewall, wherein the sidewall is a cylindrical surface of which the center axis is the optical axis of the lens; the bottom part is a convex curved surface and used for refracting light generated by a light source and within the range of +/-30 degrees to the first curved surface, and then a light in an included angle of +/ -3 degrees relative to the optical axis of the lens is refracted by the first curved surface; the sidewall is used for refracting the light which is sent by the light source and more than +/ -30 degrees and less than or equal to +/ -90 degrees to the periphery, the light is completely reflected by the whole periphery to the second curved surface, the light in the included angle of +/ -3.5 degrees relative to the optical axis of the lens is refracted by the second curved surface, and finally the light is overlapped with the light refracted by the first curved surface to form a light beam with half light intensity angle of 7 degrees. The lens is simple and compact in structure. The invention further provides a light source assembly with the lens.
Description
Technical field
The present invention relates to lighting field, particularly relate to a kind of lens and there is the light source assembly of these lens.
Background technology
At present along with the maturation of LED chip and packaging technology, LED luminance requires to be enough to the demand meeting each lighting field, and LED solid-state illumination becomes trend.Because LED is energy-conservation, environmental protection, safety, has colour rendering index high, the life-span long etc. performance characteristics; Simultaneously its also to have volume little, the distinguishing features such as light efficiency is high, and energy consumption is little.So LED light source is widely applied to the every field of scientific experiment, production, life with its obvious advantage.
Now general flashlight is all the patten's design adopting optically focused reflector to add LED light source, some flashlight is in order to reach low-angle optically focused and illumination requirement and adopt multiple reflector to combine an overall mode, and lens combination design outline size is larger, sometimes also adopt plurality of LEDs chip, its circuit configuration is compact is unfavorable for heat radiation.
Summary of the invention
The object of the present invention is to provide a kind of lens simple and compact for structure and there is the light source assembly of these lens.
In order to solve the problems of the technologies described above, the invention provides a kind of lens, described lens take optical axis as the paraboloid of revolution revolving body of gyroaxis, the periphery of described lens is the paraboloid of revolution, the large end of described lens comprises first surface and the second curved surface, described second curved surface is arranged around described first surface, described lens small end offers light source container cavity, described light source container cavity comprises bottom and sidewall, described sidewall is the face of cylinder of axle centered by the optical axis of described lens, described bottom is convex surface, described bottom is used for light source to send ± and the light of 30 ° of scopes refracts to described first surface through described bottom, and to reflect with the optical axis included angle of described lens through described first surface be the light of ± 3 °, what described sidewall was used for described light source to send be greater than ± and 30 ° and be less than or equal to ± 90 ° of light refract to described periphery through described sidewall, be totally reflected to described second curved surface by described periphery, going out with the optical axis included angle of described lens through described second curved refractive is the light of ± 3.5 °, and form with the optical superposition that described first surface reflects the light beam that half light intensity angle is 7 °.
Wherein, the optical superposition that the light that goes out of described second curved refractive and described first surface reflect forms the light beam that half light intensity angle is 7 °.
Wherein, described first surface is convex surface.
Wherein, described second curved surface is convex annular curved surface.
Wherein, described lens adopt optical-grade transparent plastic material to make.
The present invention also provides a kind of light source assembly, it comprises light source and lens, described lens take optical axis as the paraboloid of revolution revolving body of gyroaxis, the periphery of described lens is the paraboloid of revolution, the large end of described lens comprises first surface and the second curved surface, described second curved surface is arranged around described first surface, described lens small end offers light source container cavity, described light source container cavity comprises bottom and sidewall, described sidewall is the face of cylinder of axle centered by the optical axis of described lens, described bottom is convex surface, described light source is contained in described light source container cavity, the optical axis coincidence of described light source is in the optical axis of described lens, the light that described light source is launched injects described lens by described lens small end, described light source sends ± and the light of 30 ° of scopes refracts to described first surface through described bottom, and to reflect with the optical axis included angle of described lens through described first surface be the light of ± 3 °, what described light source sent be greater than ± and 30 ° and be less than or equal to ± 90 ° of light refract to described periphery through described sidewall, be totally reflected to described second curved surface by described periphery, going out with the optical axis included angle of described lens through described second curved refractive is the light of ± 3.5 °, and form with the optical superposition that described first surface reflects the light beam that half light intensity angle is 7 °.
Wherein, described light source is Lambertian source.
Wherein, the optical superposition that the light that goes out of described second curved refractive and described first surface reflect forms the light beam that half light intensity angle is 7 °.
Wherein, described first surface is convex surface.
Wherein, described second curved surface is convex annular curved surface.
Described lens arrangement provided by the present invention is simple, compact, can realize light source assembly miniaturization, ultrathin.In addition, die sinking is easily shaping, and cost is low is easy to a large amount of production.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the light source assembly that embodiment of the present invention provides;
Fig. 2 is the schematic diagram at another visual angle of the light source assembly of Fig. 1;
Fig. 3 is the sectional view along III-III direction of the light source assembly of Fig. 2;
Fig. 4 is the Illumination Distribution figure of the light source assembly of Fig. 1.
Detailed description of the invention
Below in conjunction with the accompanying drawing in embodiment of the present invention, the technical scheme in embodiment of the present invention is clearly and completely described.
See also Fig. 1 to Fig. 3, a kind of light source assembly 100 that embodiment of the present invention provides, described light source assembly 100 comprises light source 11 and lens 12.Described light source assembly 100 is for flashlight.
The paraboloid of revolution revolving body that described lens 120 are is gyroaxis with optical axis OO '.The periphery 120a of described lens 120 is the paraboloid of revolution.Described lens 120 greatly end 120b comprise first surface 120c and the second curved surface 120d, described second curved surface 120d is arranged around described first surface 120c, described lens 120 small end 120e offers light source container cavity 120f, it is the face of cylinder of axle centered by the optical axis OO ' of described lens 120 that described light source container cavity 120f comprises bottom 120g and sidewall 120h, described sidewall 120h.
Described bottom 120g is convex surface.Described bottom 120g is used for described light source 11 to send ± and the light L1 of 30 ° of scopes refracts to described first surface 120c, and to reflect with the optical axis OO ' included angle A of described lens 120 through described first surface 120c be the light L2 of 3 °.What described sidewall 120h was used for described light source 11 to send be greater than ± and 30 ° and be less than or equal to ± 90 ° of light L3 refract to described periphery 120a through described sidewall, be totally reflected to described second curved surface 120d by described periphery 120a, reflecting with the optical axis OO ' included angle B of described lens 120 through described second curved surface 120d is the light L4 of 3.5 °, and superposes with the light L2 that described first surface 120c reflects the light beam that formation half light intensity angle is 7 °.In present embodiment, the light L2 that the light L4 that described second curved surface 120d reflects and described first surface 120c reflect superposes the light beam that formation half light intensity angle is 7 °.Described lens 120 adopt optical-grade transparent plastic material to make.Particularly, described lens 120 adopt polymethyl methacrylate to make.Described first surface 120c is convex surface, and described second curved surface 120d is convex annular curved surface.Certainly, in other embodiments, the end face of described large end 120b also can be concave surface or aspheric curve.Described lens 120 also can adopt glass to make.
Described light source 11 is contained in described light source container cavity 120f, the optical axis NN ' of described light source 11 coincides with the optical axis OO ' of described lens 120, described light source 11 sends ± and the light L1 of 30 ° of scopes refracts to described first surface 120c through described bottom 120g, and to reflect with the optical axis OO ' angle of described lens 120 through described first surface 120c be the light L2 of 3 °, what described light source 11 sent be greater than ± and 30 ° and be less than or equal to ± 90 ° of light L3 refract to described periphery 120a through described sidewall 120h, be totally reflected to described second curved surface 120d by described periphery 120a, reflecting with the optical axis OO ' angle of described lens 120 through described second curved surface 120d is the light L4 of 3.5 °, and superpose with the light L2 that described first surface 120c reflects the light beam that formation half light intensity angle is 7 °.Particularly, described light source 11 is Lambertian source.Particularly, described light source 11 adopts the 1W High Power LED chip of CREE XP-E, and described light source 11 luminous flux is 1001m.Certainly, in other embodiments, described light source 11 also can adopt tengsten lamp, fluorescent lamp or Halogen lamp LED.
Refer to Fig. 4, it is 4800cd that light source assembly 100 provided by the present invention sends center light intensity values, and half luminous light intensity angle is 7 °.
Described lens arrangement provided by the present invention is simple, compact, can realize light source assembly miniaturization, ultrathin.In addition, die sinking is easily shaping, and cost is low is easy to a large amount of production.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. lens, described lens take optical axis as the paraboloid of revolution revolving body of gyroaxis, the periphery of described lens is the paraboloid of revolution, the large end of described lens comprises first surface and the second curved surface, described second curved surface is arranged around described first surface, described lens small end offers light source container cavity, described light source container cavity comprises bottom and sidewall, described sidewall is the face of cylinder of axle centered by the optical axis of described lens, described bottom is convex surface, described bottom is used for light source to send ± and the light of 30 ° of scopes refracts to described first surface through described bottom, and to reflect with the optical axis included angle of described lens through described first surface be the light of ± 3 °, what described sidewall was used for described light source to send be greater than ± and 30 ° and be less than or equal to ± 90 ° of light refract to described periphery through described sidewall, be totally reflected to described second curved surface by described periphery, going out with the optical axis included angle of described lens through described second curved refractive is the light of ± 3.5 °, and form with the optical superposition that described first surface reflects the light beam that half light intensity angle is 7 °.
2. lens according to claim 1, is characterized in that, the light that described second curved refractive goes out and the optical superposition that described first surface reflects form the light beam that half light intensity angle is 7 °.
3. lens according to claim 1, is characterized in that, described first surface is convex surface.
4. lens according to claim 3, is characterized in that, described second curved surface is convex annular curved surface.
5. lens according to claim 1, is characterized in that, described lens adopt optical-grade transparent plastic material to make.
6. a light source assembly, it comprises light source and lens, described lens take optical axis as the paraboloid of revolution revolving body of gyroaxis, the periphery of described lens is the paraboloid of revolution, the large end of described lens comprises first surface and the second curved surface, described second curved surface is arranged around described first surface, described lens small end offers light source container cavity, described light source container cavity comprises bottom and sidewall, described sidewall is the face of cylinder of axle centered by the optical axis of described lens, described bottom is convex surface, described light source is contained in described light source container cavity, the optical axis coincidence of described light source is in the optical axis of described lens, the light that described light source is launched injects described lens by described lens small end, described light source sends ± and the light of 30 ° of scopes refracts to described first surface through described bottom, and to reflect with the optical axis included angle of described lens through described first surface be the light of ± 3 °, what described light source sent be greater than ± and 30 ° and be less than or equal to ± 90 ° of light refract to described periphery through described sidewall, be totally reflected to described second curved surface by described periphery, going out with the optical axis included angle of described lens through described second curved refractive is the light of ± 3.5 °, and form with the optical superposition that described first surface reflects the light beam that half light intensity angle is 7 °.
7. light source assembly according to claim 6, is characterized in that, described light source is Lambertian source.
8. light source assembly according to claim 6, is characterized in that, the light that described second curved refractive goes out and the optical superposition that described first surface reflects form the light beam that half light intensity angle is 7 °.
9. light source assembly according to claim 6, is characterized in that, described first surface is convex surface.
10. light source assembly according to claim 9, is characterized in that, described second curved surface is convex annular curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310634659.8A CN104676482A (en) | 2013-11-29 | 2013-11-29 | Lens and light source module with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310634659.8A CN104676482A (en) | 2013-11-29 | 2013-11-29 | Lens and light source module with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104676482A true CN104676482A (en) | 2015-06-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310634659.8A Pending CN104676482A (en) | 2013-11-29 | 2013-11-29 | Lens and light source module with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104676482A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414487A (en) * | 2018-03-08 | 2018-08-17 | 北京航空航天大学 | A kind of optical collection method and system for solid outgoing fluorescence |
| EP3839593A1 (en) * | 2019-12-17 | 2021-06-23 | T.Y.C. Brother Industrial Co., Ltd. | Lens device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251611A (en) * | 2007-02-20 | 2008-08-27 | 赛克尼克斯股份有限公司 | Focusing lens for LED |
| US20100128233A1 (en) * | 2008-11-21 | 2010-05-27 | Hong Kong Applied Science And Technology Research Institute | Led light shaping device and illumination system |
| CN201652173U (en) * | 2010-04-09 | 2010-11-24 | 包永浩 | High-power LED secondary optical lens with adjustable beam angle |
| CN202012853U (en) * | 2011-04-15 | 2011-10-19 | 暨南大学 | Beam angle adjustment lens group for LED (light-emitting diode) light source |
| CN102401319A (en) * | 2011-11-25 | 2012-04-04 | 东莞市永兴电子科技有限公司 | Light emitting diode (LED) secondary optical lens |
-
2013
- 2013-11-29 CN CN201310634659.8A patent/CN104676482A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251611A (en) * | 2007-02-20 | 2008-08-27 | 赛克尼克斯股份有限公司 | Focusing lens for LED |
| US20100128233A1 (en) * | 2008-11-21 | 2010-05-27 | Hong Kong Applied Science And Technology Research Institute | Led light shaping device and illumination system |
| CN201652173U (en) * | 2010-04-09 | 2010-11-24 | 包永浩 | High-power LED secondary optical lens with adjustable beam angle |
| CN202012853U (en) * | 2011-04-15 | 2011-10-19 | 暨南大学 | Beam angle adjustment lens group for LED (light-emitting diode) light source |
| CN102401319A (en) * | 2011-11-25 | 2012-04-04 | 东莞市永兴电子科技有限公司 | Light emitting diode (LED) secondary optical lens |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414487A (en) * | 2018-03-08 | 2018-08-17 | 北京航空航天大学 | A kind of optical collection method and system for solid outgoing fluorescence |
| CN108414487B (en) * | 2018-03-08 | 2021-02-12 | 北京航空航天大学 | Optical collection method and system for solid emergent fluorescence |
| EP3839593A1 (en) * | 2019-12-17 | 2021-06-23 | T.Y.C. Brother Industrial Co., Ltd. | Lens device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150603 |
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| RJ01 | Rejection of invention patent application after publication |