CN102410493A - Lens and light source module - Google Patents
Lens and light source module Download PDFInfo
- Publication number
- CN102410493A CN102410493A CN 201010289483 CN201010289483A CN102410493A CN 102410493 A CN102410493 A CN 102410493A CN 201010289483 CN201010289483 CN 201010289483 CN 201010289483 A CN201010289483 A CN 201010289483A CN 102410493 A CN102410493 A CN 102410493A
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- China
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- lens
- light source
- optical axis
- exiting surface
- incidence surface
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Abstract
The invention relates to a lens, which comprises an incident plane and a first emergent plane, wherein the first emergent plane is a convex curved surface and is opposite to the incident plane. The incident plane is a concave surface, and forms a convex lens part with the first emergent plane, and the convex lens part is provided with an optical axis. The lens further comprises a second emergent plane which is opposite to the incident plane, and the distance between the area of the second emergent plane close to the optical axis and the incident plane is smaller than that between the area of the second emergent plane far away from the optical axis and the incident plane. The invention further relates to a light source module which is provided 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 convex surface and relative with said incidence surface.Said incidence surface is a concave surface, and forms convex lens portions with said first exiting surface, and this convex lens portions has an optical axis.Said lens further comprise second exiting surface, and this second exiting surface is relative with said incidence surface, this second exiting surface near the distance of the zone of said optical axis and incidence surface less than said second exiting surface away from the zone of said optical axis and the distance of incidence surface.
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 convex surface and relative with said incidence surface.Said incidence surface is a concave surface, and forms convex lens portions with said first exiting surface, and this convex lens portions has an optical axis.Said lens further comprise second exiting surface, and this second exiting surface is relative with said incidence surface, this second exiting surface near the distance of the zone of said optical axis and incidence surface less than said second exiting surface away from the zone of said optical axis and the distance of incidence surface.Said incidence surface surrounds a groove, and said light source is arranged in the said groove.
Said first exiting surface and incidence surface are formed a convex lens portions, and this convex lens portions can be with the light of light source irradiation on it to concentrating near its optical axis direction, to be used for realizing the illumination of remote areas; Said second exiting surface can be with shining light on it to the direction deviation away from optical axis, to be used for realizing 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
Encapsulation base 11
Light-emitting diode chip for backlight unit 12
First exiting surface 22
Second exiting surface 23
Second surface 112
Groove 211
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.In this embodiment, said light source 10 is a light emitting diode, and it comprises encapsulation base 11, light-emitting diode chip for backlight unit 12 and packaging body 13.Said encapsulation base 11 has opposite first 111 and second surface 112.Said light-emitting diode chip for backlight unit 12 is sticked on the first surface 111 of encapsulation base 11, and said packaging body 13 is formed on the first surface 111 of encapsulation base 11 and coats said light-emitting diode chip for backlight unit 12.The mixing of one or more in the be selected from epoxy resin of said packaging body 13, the silicones etc.Also can be doped with fluorescent material in the said packaging body 13, said fluorescent material can be selected from one or more the combination in yttrium-aluminium-garnet, terbium yttrium-aluminium-garnet, nitride, sulfide and the silicate.Said light emitting diode can be fixed on the circuit board 30 through modes such as surface mount, and is electrically connected with circuit board 30.
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 is a concave surface, and this concave surface surrounds a groove 211, and said groove 211 can be used for accommodating light source 10.Said concave surface can be made up of several planes, also can be made up of at least one curved surface, also can be made up of at least one plane and at least one curved surface.In this embodiment, said concave surface is made up of a concave spherical surface, and promptly said incidence surface 21 is a concave spherical surface, and said lens 20 also comprise a plane 25 around incidence surface 21.Because light source 10 is housed in the said groove 211, light source 10 nearly all emergent lights all can incide in the lens 20.In this embodiment, because said light source 10 is light emitting diode, the plane 25 of said lens 20 can directly be fixed on the circuit board 30 through viscose glue etc., thereby need not to adopt other supporting construction to fix lens 20.
Said first exiting surface 22 is a convex surface, and itself and said incidence surface 21 are formed a convex lens portions.In this embodiment, said convex lens portions has an optical axis O, and has a focus that is positioned at said groove 211, and said light source 10 is arranged on this along, thereby makes the light of warp first exiting surface 22 outgoing be roughly directional light.
Said second exiting surface 23 is positioned at said first exiting surface, 22 1 sides; Its near the distance of the zone of said optical axis O and incidence surface 21 less than said second exiting surface 23 away from the zone of said optical axis O and the distance of incidence surface 21, promptly on second exiting surface 23 each point to the distance of incidence surface 21 along with the distance between the optical axis O of itself and convex lens portions becomes big and becomes big.So, can be to away from optical axis O direction deviation from the light of second exiting surface, 23 outgoing, this partly light can be used to realize the illumination in zone nearby.In this embodiment, said second exiting surface 23 is a plane.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.
Said joint face 24 can be with shining light on it near optical axis O direction reflection, to be used for the remote areas illumination.The albedo of said joint face 24 can be reached through coating reflectance coating above that, or utilizes total reflection principle to reach.In this embodiment, said joint face 24 is a plane, and it is parallel with said optical axis O.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 first exiting surface 22 is formed a convex lens portions with incidence surface 21, and this convex lens portions 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 can be with shining light on it to away from optical axis O direction deviation, to be used for realizing 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 convex surface and relative with said incidence surface, it is characterized in that: said incidence surface is a concave surface, and forms convex lens portions with said first exiting surface; This convex lens portions has an optical axis; Said lens further comprise second exiting surface, and this second exiting surface is relative with said incidence surface, this second exiting surface near the distance of the zone of said optical axis and incidence surface less than said second exiting surface away from the zone of said optical axis and the distance of incidence surface.
2. lens as claimed in claim 1 is characterized in that: said incidence surface is a concave spherical surface.
3. lens as claimed in claim 1 is characterized in that: said lens also comprise a joint face between first exiting surface and second exiting surface, and this joint face is used for the light that shines on it is reflected to said optical axis direction.
4. lens as claimed in claim 3 is characterized in that: said joint face is parallel with said optical axis.
5. lens as claimed in claim 3 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 lens also comprise a plane around incidence surface.
7. lens as claimed in claim 1 is characterized in that: said incidence surface surrounds a groove, and the focus of said convex lens portions is positioned at said groove.
8. a light source module comprises that light source reaches like each described lens of claim 1 to 6, and said incidence surface surrounds a groove, and said light source is arranged in the said groove.
9. light source module as claimed in claim 8 is characterized in that: the focus of said convex lens portions is positioned at said groove, and said light source is located at said along.
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 201010289483 CN102410493A (en) | 2010-09-21 | 2010-09-21 | Lens and light source module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010289483 CN102410493A (en) | 2010-09-21 | 2010-09-21 | Lens and light source module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102410493A true CN102410493A (en) | 2012-04-11 |
Family
ID=45912718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010289483 Pending CN102410493A (en) | 2010-09-21 | 2010-09-21 | Lens and light source module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102410493A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749868A (en) * | 2015-04-01 | 2015-07-01 | 苏州佳世达光电有限公司 | Light source module and projecting device |
| CN105351885A (en) * | 2015-12-05 | 2016-02-24 | 中山市华南理工大学现代产业技术研究院 | Design method for optical lens for LED automobile front fog lamp |
-
2010
- 2010-09-21 CN CN 201010289483 patent/CN102410493A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749868A (en) * | 2015-04-01 | 2015-07-01 | 苏州佳世达光电有限公司 | Light source module and projecting device |
| CN105351885A (en) * | 2015-12-05 | 2016-02-24 | 中山市华南理工大学现代产业技术研究院 | Design method for optical lens for LED automobile front fog lamp |
| CN105351885B (en) * | 2015-12-05 | 2018-10-23 | 中山市华南理工大学现代产业技术研究院 | A kind of optical lens design method of automobile LED front fog lamp |
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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: 20120411 |