CN205746194U - A kind of optical system being applied to LED - Google Patents
A kind of optical system being applied to LED Download PDFInfo
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- CN205746194U CN205746194U CN201620641895.1U CN201620641895U CN205746194U CN 205746194 U CN205746194 U CN 205746194U CN 201620641895 U CN201620641895 U CN 201620641895U CN 205746194 U CN205746194 U CN 205746194U
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Abstract
The utility model discloses a kind of optical system being applied to LED, including lens and parabolic reflector；Lens include central part have convergence effect to light, that at least have first surface, and with central part around the planar portions being connected, its two sides is plane；Parabolic reflector has the second curved surface in surface of revolution, and the second curved surface is reflective surface, and its central shaft overlaps with the central optical axis of lens, and one end of lens and the second curved surface engages；LED light source is positioned at the central axis of parabolic reflector.This optical system lens has the planar portions of cincture, light will not change through planar portions light path, the light shining directly into lens plane portion either sent by LED light source, or through parabolic reflector reflective surface reflect after light be irradiated to planar portions, all directly can penetrate through planar portions.Therefore, when optical design, pointedly lens centre portion, parabolic reflector the second curved surface are designed according to light distribution requirements, it is not necessary to take into account, reduce optical design difficulty.
Description
Technical field
This utility model relates to LED optically focused luminous intensity distribution technical field, particularly relates to a kind of optical system being applied to LED.
Background technology
The patent documentation of Patent No. CN 204477928U discloses a kind of LED optical system, is used for realizing LED point light
The optically focused luminous intensity distribution in source, specifically includes plus lens, reflective support and LED light source.Wherein, plus lens is by first surface and
The lens of the non-uniform thickness that two curved surfaces are constituted, reflective support has the 3rd curved surface as reflective surface, by the first of lens
Curved surface, the second curved surface and be the 3rd curved surface of reflective surface, it is achieved adjust emitting beam of LED point light source, it is achieved to LED light source
Optically focused luminous intensity distribution.
But above-mentioned LED optical system there is problems in that in above-mentioned optical system, the light that sends of LED light source is divided into two kinds,
A kind of direct light being to shine directly into lens, the another kind of reflection light for being irradiated to lens after reflective surface reflects, but
At the portion of lens, direct light and reflection light can be had simultaneously to inject, therefore to take into account this when carrying out optical design simultaneously
Two parts light, this makes optical design difficulty bigger.
Utility model content
The purpose of this utility model is to provide a kind of optical system being applied to LED, overcomes the existing LED that is applied to and gathers
The optical system of the light luminous intensity distribution problem that design difficulty is bigger when carrying out optical design.
For solving above-mentioned technical problem, this utility model following technical scheme of offer:
A kind of optical system being applied to LED, including lens and parabolic reflector；
Described lens include central part have convergence effect to light, that at least have first surface, and with described in
Heart portion is around the planar portions connected, and its two sides is plane；
Described parabolic reflector has the second curved surface in surface of revolution, and described second curved surface is reflective surface, and its central shaft with
The central optical axis of described lens overlaps, and described lens engage with one end of described second curved surface；
LED light source is positioned at the central axis of described parabolic reflector.
Alternatively, the one side of the LED light source dorsad of described central part is described first surface.
Alternatively, the one side towards described LED light source of described central part is plane or curved surface.
Alternatively, described central part and described planar portions are not in same plane, and described centre is in described reflective
In frame, described lens also include the connecting portion connecting described central part with described planar portions.
Alternatively, any one in described central part, described connecting portion, described planar portions three is separate part, with
Additionally parts removably connect；
Or, described central part, described connecting portion, described planar portions are separate part, removably connect each other.
Alternatively, described central part, described connecting portion, described planar portions three can be by identical or different material systems
Become.
Alternatively, the circuit board of LED light source engages with the other end of described second curved surface, and described LED light source is positioned at described
In the closing space that lens, described second curved surface and described circuit board are formed.
Alternatively, described parabolic reflector is rotary body, and the medial wall of described rotary body has described second curved surface.
Alternatively, the thickness of described planar portions is uniform.
Alternatively, described lens are clear glass lens or Clear plastic lenses.
By technique scheme it can be seen that the optical system being applied to LED provided by the utility model, including lens
And parabolic reflector, wherein, lens include central part have convergence effect to light, that at least have first surface, and and center
Portion is around the planar portions connected；Parabolic reflector has the second curved surface in surface of revolution, and this second curved surface is reflective surface, and wherein
Mandrel overlaps with the central optical axis of lens, and lens engage with one end of parabolic reflector the second curved surface, and LED light source is positioned at parabolic reflector
Central axis.This optical system is for realizing the optically focused luminous intensity distribution to LED light source, and the light that sends of LED light source is divided into two parts, wherein
A part shines directly into the central part of lens, pools low-angle light beam or collimated light beam injection through lens centre portion；Another
The light that sends of part is irradiated to the second curved surface of parabolic reflector, is irradiated to the planar portions of lens, directly penetrates after the second camber reflection
Go out.
These lens have planar portions, and light will not change through planar portions light path, the most either by LED light source send straight
Connect the light being irradiated to lens plane portion, or the light after parabolic reflector reflective surface reflects is irradiated to planar portions, all can be through
Planar portions directly penetrates.Therefore, when carrying out optical design, according to light distribution requirements, lens centre portion, parabolic reflector the second curved surface are entered
Row respective design, it is not necessary to take into account, compared with existing optical system, reduces optical design difficulty.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, the accompanying drawing in describing below is only
It is embodiments more of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work
Under, it is also possible to other accompanying drawing is obtained according to these accompanying drawings.
The structural representation of a kind of optical system being applied to LED that Fig. 1 provides for this utility model embodiment；
Fig. 2 is the light path schematic diagram of optical system shown in Fig. 1；
The structural representation of a kind of optical system being applied to LED that Fig. 3 provides for the another embodiment of this utility model；
Fig. 4 is the light path schematic diagram of optical system shown in Fig. 3.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in this utility model, below in conjunction with this reality
With the accompanying drawing in new embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that
Described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on this utility model
In embodiment, the every other enforcement that those of ordinary skill in the art are obtained under not making creative work premise
Example, all should belong to the scope of this utility model protection.
This utility model embodiment provides a kind of optical system being applied to LED, including lens and parabolic reflector；
Described lens include central part have convergence effect to light, that at least have first surface, and with described in
Heart portion is around the planar portions connected, and its two sides is plane；
Described parabolic reflector has the second curved surface in surface of revolution, and described second curved surface is reflective surface, and its central shaft with
The central optical axis of described lens overlaps, and described lens engage with one end of described second curved surface；
LED light source is positioned at the central axis of described parabolic reflector.
The optical system being applied to LED that this utility model embodiment provides, including lens and parabolic reflector, wherein, lens
Including the central part that light is had convergence effect, at least there is first surface, and with central part around the planar portions being connected；
Parabolic reflector has the second curved surface in surface of revolution, and this second curved surface is reflective surface, and the center light of its central shaft and lens
Axle overlaps, and lens engage with one end of parabolic reflector the second curved surface, and LED light source is positioned at the central axis of parabolic reflector.This optical system
System is for realizing the optically focused luminous intensity distribution to LED light source, and the light that sends of LED light source is divided into two parts, a portion to shine directly into
The central part of lens, pools low-angle light beam or collimated light beam injection through lens centre portion；Another part sends light and is irradiated to
Second curved surface of parabolic reflector, is irradiated to the planar portions injection of lens after the second camber reflection.
This optical system lens has planar portions, and light will not change through planar portions light path, the most either by LED light source
The light shining directly into lens plane portion sent, or through parabolic reflector reflective surface reflect after light be irradiated to plane
Portion, all directly can penetrate through planar portions.Therefore when carrying out optical design, according to light distribution requirements pointedly to lens centre
Portion, parabolic reflector the second curved surface are designed, it is not necessary to take into account, and compared with existing optical system, reduce optical design difficult
Degree.
The optical system that this utility model is applied to LED below in conjunction with the accompanying drawings is described in detail.
Refer to Fig. 1, for the structural representation of a kind of optical system being applied to LED that this utility model one embodiment provides
Figure, as seen from the figure, this optical system includes lens 1 and parabolic reflector 2.
Wherein, lens 1 include central part 10 and planar portions 11, and central part 10 has convergence effect to light, at least have
One curved surface 100.LED light source 3 sends the part of light and shines directly into the central part 10 of lens, pools little angle after central part
Degree light beam or collimated light beam injection, refer to the light path schematic diagram that Fig. 2, Fig. 2 are optical system shown in Fig. 1.
Described planar portions 11 is with central part 10 around being connected, and the two sides of planar portions 11 is plane, and light is through planar portions
11 light paths will not change.
Concrete, the one side of the LED light source dorsad of described central part 10 is first surface 100, central part 10 towards LED
The one side of light source can be plane, as shown in Figure 1；Optionally, the one side towards LED light source of central part 10 can also be bent
Face.In actual applications, according to the light distribution requirements of LED light source, the optical dimensions on the two sides in lens centre portion can be carried out phase
Should design.For central part one side be curved surface one side be plane lens arrangement, processing technology is relatively easy；For central part two
Face is the lens arrangement of curved surface, can meet higher light distribution requirements, but moulding process is more complicated.
In the present embodiment, it is preferred that the thickness in lens plane portion 11 is uniform.For existing LED optical system, as the back of the body
Scape technology segment describes, and its lens are the lens of the non-uniform thickness being made up of two curved surfaces, two curved surfaces in actual production molding
All there is a certain degree of shrink problem, cause its optical dimensions and standard size to have deviation, make the light cannot be fully according to design
Light path is irradiated, the biggest especially for the impact of ultra-low-angle designed system.And its lens of this utility model optical system use
The planar structure of cincture, planar portions thickness is uniform, can stop shrink problem when making, and molding is easy, and yield rate is high.
Parabolic reflector 2 has the second curved surface 20 in surface of revolution, and described second curved surface 20 is reflective surface, and its central shaft
Overlapping with the central optical axis of described lens 1, lens 1 engage with one end of the second curved surface 20, with reference to shown in Fig. 1, and LED light source 3
Central axis in parabolic reflector.A part for LED light source sends light can be irradiated to the second curved surface of parabolic reflector, through the second curved surface
The planar portions injection of lens it is irradiated to, with reference to shown in Fig. 2 after reflection.
When carrying out optical design, can be according to the rising angle of LED light source, the face shape of respective design parabolic reflector the second curved surface
And size, the reflection light making LED light source be formed after being irradiated to parabolic reflector the second curved surface, can mostly be penetrated by lens plane portion
Go out, it is to avoid be irradiated to lens centre portion.
The present embodiment is applied to the optical system of LED, for realizing the optically focused luminous intensity distribution to LED light source, sending of LED light source
Light is divided into two parts, a portion to shine directly into the central part of lens, through lens centre portion pool low-angle light beam or
Collimated light beam penetrates；Another part sends light and is irradiated to the second curved surface of parabolic reflector, is irradiated to lens after the second camber reflection
Planar portions injection.This optical system is based on lens and the second curved surface in reflective surface, it is achieved that all light to LED light source
Carry out secondary light-distribution, preferable optically focused light distribution effect can be reached.
Additionally, it is preferred that, the present embodiment optical system, central part and planar portions can be separate part, and both detachably connect
Connecing, so make lens when making, lens centre portion and planar portions can independently make, it is simple to processing, it helps improve and add
Work precision.
Wherein, lens centre portion and planar portions can use identical material, or may be used without different materials.
Refer to a kind of optical system being applied to LED that Fig. 3 and Fig. 4, Fig. 3 provide for the another embodiment of this utility model
Structural representation, Fig. 4 is the light path schematic diagram of optical system shown in Fig. 3.As seen from the figure, during in the present embodiment, lens 1 include
Heart portion 10, planar portions 11, also include that connecting portion 12, central part 10 and planar portions 11 are not in same plane, central part 10
In described parabolic reflector 2, by connecting portion 12, central part 10 and planar portions 11 are connected.
This lens arrangement designs, and makes central part 10 reduce with the distance of LED light source 3, by light path design, can make
LED light source shines directly into the wide of lens and penetrates partially by central part, and wide by parabolic reflector the second camber reflection
Partly penetrated by planar portions, light distribution effect can be optimized.
Wherein preferred, any one in the central part 10 of lens 1, connecting portion 12, planar portions 11 three can be single
Solely parts, removably connect with other parts；Or, the central part 10 of lens 1, connecting portion 12, planar portions 11 are independent portion
Part, removably connects each other.So lens make time, central part, planar portions and connecting portion can independent fabrication and processing,
Easy to process, it helps to control and improve machining accuracy.
The central part 10 of lens, connecting portion 12, planar portions 11 three can use identical material to make, or can also adopt
Make with different materials.
In the present embodiment, the preferably thickness in lens plane portion 11 is uniform, can stop shrink problem when lens make,
Not interfering with light path, molding is easy, and yield rate is high.
The present embodiment is applied to the optical system of LED, and for realizing the optically focused luminous intensity distribution to LED light source, it is right that its lens include
Light has the central part of convergence effect, and planar portions, connection central part and the connecting portion of planar portions that two sides is plane, reflective
Frame has the second curved surface as reflective surface, and this optical system is based on the second curved surface that lens and parabolic reflector are reflective surface, it is achieved
All light of LED light source are carried out secondary light-distribution；By light path design, LED light source can be made to shine directly into the light of lens
Mostly penetrated by central part, and mostly penetrated by planar portions by the light of parabolic reflector the second camber reflection, Ke Yiyou
Change light distribution effect.
In the various embodiments described above, lens 1 can be clear glass lens or Clear plastic lenses, it is possible to understand that
It is, it is also possible to be the lens of other transparent material making.
In the various embodiments described above, referring to Fig. 1, Fig. 3, the circuit board 4 of LED light source 3 is another with described second curved surface 20
One end engages, and described LED light source 3 is positioned at the closing space that described lens 1, described second curved surface 20 and described circuit board 4 are formed
In, all light that so LED light source can be sent by this optical system carry out secondary light-distribution, and ensure light energy.
In a kind of detailed description of the invention, described parabolic reflector 2 has institute as rotary body, the medial wall of described rotary body
State the second curved surface 20.
Described second curved surface 20 preferably employs the curved surface of high reflectance, it is possible to reduce when light reflects on this curved surface
Energy loss, it is ensured that the energy of final outgoing beam.
Therefore, this utility model is applied to the optical system of LED, for realizing the optically focused luminous intensity distribution to LED light source, LED light
The light that sends in source is divided into two parts, a portion to shine directly into the central part of lens, pools little angle through lens centre portion
Degree light beam or collimated light beam injection；Another part sends light and is irradiated to the second curved surface of parabolic reflector, shines after the second camber reflection
It is mapped to the planar portions injection of lens.This optical system is based on lens and the second curved surface in reflective surface, it is achieved the institute to LED light source
There is light to carry out secondary light-distribution, preferable optically focused light distribution effect can be reached.
This utility model optical system lens has planar portions, and planar portions thickness is uniform, can stop when lens make
Shrink problem, molding is easy, and yield rate is high；Planar portions will not change light path, when carrying out optical design, according to light distribution requirements pin
Lens centre portion, parabolic reflector the second curved surface are designed by property, it is not necessary to take into account, fall compared with existing optical system
Low optical design difficulty.
Above the optical system of a kind of LED of being applied to provided by the utility model is described in detail.Herein
Applying specific case to be set forth principle of the present utility model and embodiment, the explanation of above example is only intended to
Help to understand method of the present utility model and core concept thereof.It should be pointed out that, those skilled in the art are come
Saying, on the premise of without departing from this utility model principle, it is also possible to this utility model is carried out some improvement and modification, these change
Enter and modification also falls in this utility model scope of the claims.
Claims (10)
1. the optical system being applied to LED, it is characterised in that include lens and parabolic reflector；
Described lens include central part have convergence effect to light, that at least have first surface, and with described central part
Around the planar portions connected, its two sides is plane；
Described parabolic reflector has the second curved surface in surface of revolution, and described second curved surface is reflective surface, and its central shaft is with described
The central optical axis of lens overlaps, and described lens engage with one end of described second curved surface；
LED light source is positioned at the central axis of described parabolic reflector.
2. optical system as claimed in claim 1, it is characterised in that the one side of the LED light source dorsad of described central part is institute
State first surface.
3. optical system as claimed in claim 2, it is characterised in that the one side towards described LED light source of described central part
For plane or curved surface.
4. optical system as claimed in claim 1, it is characterised in that described central part and described planar portions are not at same flat
In face, described centre is in described parabolic reflector, and described lens also include the company connecting described central part with described planar portions
Meet portion.
5. optical system as claimed in claim 4, it is characterised in that described central part, described connecting portion, described planar portions three
Any one in person is separate part, removably connects with other parts；
Or, described central part, described connecting portion, described planar portions are separate part, removably connect each other.
6. optical system as claimed in claim 5, it is characterised in that described central part, described connecting portion, described planar portions three
Person can be made up of identical or different materials.
7. optical system as claimed in claim 1, it is characterised in that the circuit board of LED light source is another with described second curved surface
One end engages, and described LED light source is positioned at the closing space that described lens, described second curved surface and described circuit board are formed.
8. optical system as claimed in claim 7, it is characterised in that described parabolic reflector is rotary body, described rotary body interior
Sidewall has described second curved surface.
9. the optical system as described in any one of claim 1-8, it is characterised in that the thickness of described planar portions is uniform.
10. the optical system as described in any one of claim 1-8, it is characterised in that described lens be clear glass lens or
Clear plastic lenses.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620641895.1U CN205746194U (en) | 2016-06-22 | 2016-06-22 | A kind of optical system being applied to LED |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620641895.1U CN205746194U (en) | 2016-06-22 | 2016-06-22 | A kind of optical system being applied to LED |
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| CN205746194U true CN205746194U (en) | 2016-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972466A (en) * | 2016-06-22 | 2016-09-28 | 杭州上达光电科技有限公司 | Optical system applied to LED |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972466A (en) * | 2016-06-22 | 2016-09-28 | 杭州上达光电科技有限公司 | Optical system applied to LED |
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