CN102434849A - Lens and light source module - Google Patents
Lens and light source module Download PDFInfo
- Publication number
- CN102434849A CN102434849A CN 201010296643 CN201010296643A CN102434849A CN 102434849 A CN102434849 A CN 102434849A CN 201010296643 CN201010296643 CN 201010296643 CN 201010296643 A CN201010296643 A CN 201010296643A CN 102434849 A CN102434849 A CN 102434849A
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- lens
- light source
- exiting surface
- optical axis
- plane
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Abstract
The invention relates to a lens. The lens comprises a light incident surface and a first light emitting surface, wherein the first light emitting surface is a Fresnel lens surface and is opposite to the light incident surface; the first light emitting surface and the light incident surface form a Fresnel lens part; the lens also comprises a second light emitting surface opposite to the light incident surface and a connecting surface connecting the first light emitting surface with the second light emitting surface; the Fresnel lens surface comprises a plurality of concentric annular curved surfaces; partial annular curved surfaces in the Fresnel lens surface and the connecting surface are intersected and form an intersecting line; and the included angle between the second light emitting surface and the plane vertical to an optical axis of the Fresnel lens part is smaller than that between a tangent plane of the intersected annular curved surfaces passing through any point on the intersecting line of all intersected annular curved surfaces and being intersected with the connecting surface and the plane vertical to the optical axis. The invention also relates to a light source module with the lens.
Description
Technical field
The present invention relates to optical field, relate in particular to a kind of lens and have the light source module of these lens.
Background technology
At present; Big multiple light courcess, like light emitting diode, discharge lamp and Halogen lamp LED etc., emergent ray all have the bigger angle of divergence; If will realize remote illumination; Generally need a condenser lens be set in these light source fronts, reduce the angle of divergence of its light, make its light concentrate near the outgoing of optical axis of condenser lens.But at some product, in flashlight or car light etc., a part of light of both having hoped light source can be realized the illumination of remote areas, hopes that again a part of light of light source can be realized the illumination of ground region nearby.
Summary of the invention
In view of this, be necessary to provide a kind of a part of light that can either let light source realize the illumination of remote areas, can let a part of light of light source realize the lens of the illumination in zone nearby again and adopt the light source module of these lens.
A kind of lens comprise the incidence surface and first exiting surface, and this first exiting surface is a Fei Nieer minute surface and relative with said incidence surface, and this first exiting surface and incidence surface are formed a Fei Nieer lens section.Said lens also comprise second exiting surface relative with said incidence surface and are connected first exiting surface and the joint face of second exiting surface.Said Fei Nieer minute surface comprises a plurality of concentric annular surfaces, and part annular surface and said joint face intersect in the said Fei Nieer minute surface, and forms intersecting lens.Said second exiting surface with perpendicular to the angle on the plane of the optical axis of said Fei Nieer lens section less than the tangent plane of any point on the said intersecting lens of mistake of each annular surface that intersects with said joint face and angle perpendicular to the plane of said optical axis.
A kind of light source module comprises light source and lens.These lens comprise the incidence surface and first exiting surface, and this first exiting surface is a Fei Nieer minute surface and relative with said incidence surface, and this first exiting surface and incidence surface are formed a Fei Nieer lens section.Said lens also comprise second exiting surface relative with said incidence surface and are connected first exiting surface and the joint face of second exiting surface.Said Fei Nieer minute surface comprises a plurality of concentric annular surfaces, and part annular surface and said joint face intersect in the said Fei Nieer minute surface, and forms intersecting lens.Said second exiting surface with perpendicular to the angle on the plane of the optical axis of said Fei Nieer lens section less than the tangent plane of any point on the said intersecting lens of mistake of each annular surface that intersects with said joint face and angle perpendicular to the plane of said optical axis.Said light source is arranged on incidence surface one side of said lens.
Said first exiting surface and incidence surface are formed a Fei Nieer lens section, and this Fei Nieer lens section can be with the light of light source irradiation on it to concentrating near optical axis direction, to be used for realizing the illumination of remote areas; Said second exiting surface has relatively poor light gathering compared to said first exiting surface, thereby makes that departing from said optical axis from the light of the said second exiting surface outgoing realizes the illumination in zone nearby.So, said lens can let a part of light of light source realize the illumination of remote areas, can let a part of light of light source realize the illumination in zone nearby again.
Description of drawings
Fig. 1 is the schematic perspective view of the light source module that provides of embodiment of the present invention.
Fig. 2 is that light source module among Fig. 1 is along the cutaway view of II-II direction among Fig. 1.
The main element symbol description
First exiting surface 22
Second exiting surface 23
Bulge loop 25
Annular surface 221
Intersecting lens 222
The specific embodiment
Below will combine accompanying drawing that the present invention is done further detailed description.
See also Fig. 1 and Fig. 2, the light source module 100 that embodiment of the present invention provides comprises light source 10 and lens 20.Said light source 10 can be a kind of in light emitting diode, discharge lamp and the Halogen lamp LED etc.
Said lens 20 comprise incidence surface 21, first exiting surface 22 relative with said incidence surface 21 and second exiting surface 23 and the joint face 24 that is connected first exiting surface 22 and second exiting surface 23.
Said incidence surface 21 can be convex surface, concave surface or plane.In this embodiment, said incidence surface 21 is a plane.
Said first exiting surface 22 is a Fei Nieer minute surface, and itself and said incidence surface 21 are formed a Fei Nieer lens section, and this Fei Nieer lens section is used to assemble the light that sends from light source 10, to be used for realizing the illumination of remote areas.Said Fei Nieer minute surface comprises a plurality of concentric annular surfaces 221, and part annular surface 221 intersects with said joint face 24 in the said Fei Nieer minute surface, and forms intersecting lens 222.Said Fei Nieer lens section has an optical axis O and a focus that is positioned at said incidence surface 21 1 sides.Said light source 10 is arranged on this along, thereby makes the light of warp first exiting surface 22 outgoing be roughly directional light, so, can reduce the angle of divergence of first exiting surface, 22 emergent raies greatly.In this embodiment, said optical axis O is perpendicular to incidence surface 21.
Said second exiting surface 23 is positioned at a side of said first exiting surface 22, and it is a plane.This second exiting surface 23 with perpendicular to the angle on the plane of said optical axis O less than the tangent plane of any point on the said intersecting lens 222 of mistake of each annular surface 221 that intersects with said joint face 24 and angle perpendicular to the plane of said optical axis O; So; Can make said second exiting surface 23 have relatively poor light gathering, thereby make that departing from said optical axis O from the light of said second exiting surface 23 outgoing realizes the illumination in zone nearby compared to said first exiting surface 22.In this embodiment; Said second exiting surface 23 perpendicular to the area of the projection on the plane of said optical axis O less than said first exiting surface 22 at area perpendicular to the projection on the plane of said optical axis O, thereby more light that can make light source 10 send can be used to carry out the illumination of remote areas.
Said joint face 24 can be with reflecting to optical axis O direction to the light on it from the lens internal radiation, to be used for the remote areas illumination.24 reflections of said joint face can be reached through coating reflectance coating above that from the ability of the light of lens internal radiation on it, or utilize total reflection principle to reach.In this embodiment, be coated with on the said joint face 24 and be coated with reflectance coating, said joint face 24 is parallel to said optical axis O.In addition, said first exiting surface 22, second exiting surface 23 and joint face 24 are being formed a circle perpendicular to the projection on the plane of optical axis O.
In this embodiment, said lens 20 peripheries also are formed with a bulge loop 25, and this bulge loop 25 can supply the fixing structure of lens 20 to control when lens 20 install and fix.
In this embodiment, said first exiting surface 22 is formed a Fei Nieer lens section with incidence surface 21, and this Fei Nieer lens section can shine light on it near optical axis O direction set, to be used for realizing the illumination of remote areas with light source 10; Said second exiting surface 23 has relatively poor light gathering compared to said first exiting surface 22, thereby makes that departing from said optical axis O from the light of said second exiting surface 23 outgoing realizes the illumination in zone nearby.So, said lens 20 can let a part of light of light source 10 realize the illumination of remote areas, can let a part of light of light source 10 realize the illumination in zone nearby again.
It is understandable that, for the person of ordinary skill of the art, can make change and the distortion that other various pictures are answered by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (10)
1. lens; Comprise the incidence surface and first exiting surface; This first exiting surface is a Fei Nieer minute surface and relative with said incidence surface; This first exiting surface and incidence surface are formed a Fei Nieer lens section; It is characterized in that: said lens also comprise second exiting surface relative with said incidence surface and are connected first exiting surface and the joint face of second exiting surface, and said Fei Nieer minute surface comprises a plurality of concentric annular surfaces, and part annular surface and said joint face intersect in the said Fei Nieer minute surface; And the formation intersecting lens, said second exiting surface with perpendicular to the angle on the plane of the optical axis of said Fei Nieer lens section less than the tangent plane of any point on the said intersecting lens of mistake of each annular surface that intersects with said joint face and angle perpendicular to the plane of said optical axis.
2. lens as claimed in claim 1 is characterized in that: said incidence surface is a plane, and vertical with said optical axis.
3. lens as claimed in claim 1 is characterized in that: said second exiting surface perpendicular to the area of the projection on the plane of said optical axis less than said first exiting surface at area perpendicular to the projection on the plane of said optical axis.
4. lens as claimed in claim 1 is characterized in that: said joint face is parallel with said optical axis.
5. lens as claimed in claim 1 is characterized in that: be coated with on the said joint face and be coated with reflectance coating.
6. lens as claimed in claim 1 is characterized in that: said first exiting surface, second exiting surface and joint face are being formed a circle perpendicular to the projection on the plane of said optical axis.
7. lens as claimed in claim 1 is characterized in that: said lens periphery also is formed with a bulge loop.
8. a light source module comprises that light source reaches like each described lens of claim 1 to 7, and said light source is arranged on incidence surface one side of said lens.
9. light source module as claimed in claim 8 is characterized in that: said light source is located at the along of the Fei Nieer lens section of said lens.
10. light source module as claimed in claim 8 is characterized in that: said light source is a light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010296643 CN102434849A (en) | 2010-09-29 | 2010-09-29 | Lens and light source module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010296643 CN102434849A (en) | 2010-09-29 | 2010-09-29 | Lens and light source module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102434849A true CN102434849A (en) | 2012-05-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010296643 Pending CN102434849A (en) | 2010-09-29 | 2010-09-29 | Lens and light source module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102434849A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764806A (en) * | 2017-01-06 | 2017-05-31 | 上海小糸车灯有限公司 | Lens, car headlamp and automobile for car light |
| WO2018126564A1 (en) * | 2017-01-06 | 2018-07-12 | 上海小糸车灯有限公司 | Lens for automotive lamp, automobile headlamp and automobile |
-
2010
- 2010-09-29 CN CN 201010296643 patent/CN102434849A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764806A (en) * | 2017-01-06 | 2017-05-31 | 上海小糸车灯有限公司 | Lens, car headlamp and automobile for car light |
| WO2018126564A1 (en) * | 2017-01-06 | 2018-07-12 | 上海小糸车灯有限公司 | Lens for automotive lamp, automobile headlamp and automobile |
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| 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: 20120502 |