CN208997998U - A kind of optical lens for realizing Homogeneous Circular hot spot - Google Patents
A kind of optical lens for realizing Homogeneous Circular hot spot Download PDFInfo
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- CN208997998U CN208997998U CN201822117241.0U CN201822117241U CN208997998U CN 208997998 U CN208997998 U CN 208997998U CN 201822117241 U CN201822117241 U CN 201822117241U CN 208997998 U CN208997998 U CN 208997998U
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- free form
- form surface
- mirror body
- transparent mirror
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Abstract
The utility model discloses a kind of optical lenses for realizing Homogeneous Circular hot spot, including transparent mirror body and the LED light source for being set to transparent mirror body bottom；The transparent mirror body includes the incidence surface of transparent mirror body bottom part body, the face TIR of side, free form surface light-emitting surface around center free form surface light-emitting surface and top；The incidence surface is the hemisphere face being recessed to transparent mirror body outside direction；The face TIR is a total internal reflection free form surface；The center free form surface light-emitting surface is free form surface UV；Free form surface light-emitting surface is free form surface WM around the top.The lens are ultra-thin, and quality is small, mitigate the burden of lamps and lanterns loading lens, reduce lens shared volume in lamps and lanterns, keep fitting structure more compact.
Description
Technical field
The utility model belongs to optical technical field, specially a kind of optical lens for realizing Homogeneous Circular hot spot.
Background technique
The light distribution of LED is similar to lambertian distribution, and light intensity can decay rapidly with the increase of the angle of emergence, and due to
Its solid angle not can be used directly greatly the requirement that miniaturization is unable to satisfy in existing lighting system, it is necessary to carry out light distribution to it
Design, improves the utilization efficiency of light, increases it in the brightness value of illumination region, reach illumination region with relatively low power
The lighting standard of demand.
General lens design is all that wide-angle is emitted, because such lens are easy design, and light efficiency is high, uniformity
Also very high.There is the uncontrollable problem of most of light in the lens of narrow angle, cause the light utilization efficiency of illumination region low, Er Qiepu
Penetrating mirror is generally flat or convex, higher cost, and lens are heavier.
Summary of the invention
The utility model aim is to provide a kind of optical lens for realizing Homogeneous Circular hot spot, to solve prior art shape
At the high defect of low efficiency, weight when Homogeneous Circular hot spot.
To achieve the goals above, the technical solution of the utility model is:
A kind of optical lens for realizing Homogeneous Circular hot spot, including transparent mirror body and the LED for being set to transparent mirror body bottom
Light source；The transparent mirror body includes the incidence surface of transparent mirror body bottom part body, the face TIR of side, center free form surface light-emitting surface
And free form surface light-emitting surface around top；The incidence surface is the hemisphere face being recessed to transparent mirror body outside direction；The face TIR
For a total internal reflection free form surface；The center free form surface light-emitting surface is free form surface UV；Free form surface around the top
Light-emitting surface is free form surface WM.
As improvement to above-mentioned technical proposal, the hemisphere radius surface of the incidence surface is 10mm.
As improvement to above-mentioned technical proposal, the height of free form surface UV is less than 7mm.
As improvement to above-mentioned technical proposal, the centre of sphere of incidence surface is arranged in the LED light source.
As improvement to above-mentioned technical proposal, the transparent mirror body uses refractive index for the transparent material system of 1.3-4.2
At.
As improvement to above-mentioned technical proposal, the transparent mirror body is made of PMMA, PC or glass material.
As improvement to above-mentioned technical proposal, the transparent mirror body maximum height is 38mm, width 66mm.
The basis mechanism of the utility model is:
The incidence surface of lens body bottom is hemisphere face, and LED light source is placed on the centre of sphere, and light is substantially vertical to be incident on spherical surface
On.It is being issued from light source to be incident on central axis angle (range is 0 degree to 40 degree) light with UV line segment around 360 degree of central axis
The free form surface UV that rotation is formed is reflected, and is emitted from free form surface UV；Remaining light (is at the angle of emergence with central axis institute
41 degree to 90 degree) after the face the TIR, that is, total internal reflection surface is totally reflected, it is incident on WM line segment around central axis 360
The free form surface WM that degree rotation is formed is reflected, and is emitted from free form surface WM.The angle of emergence be 0 degree to 40 degree when light with
The angle of emergence increases, and the spot radius being emitted from free form surface UV is also bigger and obtains maximum hot spot when the angle of emergence is 40 degree
Radius；With the increase at beam projecting angle, the angle of emergence is that 41 degree to 90 degree of light is emitted to obtain hot spot by free form surface WM
Radius is smaller, and when the angle of emergence is 90 degree, light obtains critical spot radius, the annular region of uniform-illumination is formed, with freedom
The Homogeneous Circular hot spot complementation that curved surface UV forms the anaclasis of the small shooting angle of light source becomes a big Homogeneous Circular hot spot.
In loss of weight processing, equal proportion scaling is carried out to free form surface UV, changes the size of free form surface UV, without changing
The curvature of some position free form surface UV.Free form surface UV is carried out to the equal proportion of origin scaling, can obtain one it is more frivolous
Lens, significantly become smaller by the visible lens middle section size of Fig. 2, Fig. 3, in Fig. 2 below broken line be that ultra-thin treated
Line, the thin circular arc line in top are then the obtained lines of original free form surface.Free form surface UV loss of weight processing before height be
15mm, treated highly less than 7mm for loss of weight.
In conjunction with the ultra-thin homogeneous circular light spot LED spotlight lens of TIR lens and double free form surface Mixed Designs, using refraction
Rate is the transparent material of 1.3-4.2, and light-emitting angle is 15 degree, and the efficiency of light energy utilization is greater than 90%, and illumination region uniformity of illuminance is big
In 85%, loss of weight processing is carried out to lens by the way of curved section scaling, so that lens is internally recessed, lens maximum height
For 38mm, width 66mm, lens material is saved.
Compared with prior art, the utility model has the advantages and positive effects of:
There is no the ultra-thin homogeneous circular light spot using TIR lens and double free form surface Mixed Designs in domestic similar technique
LED spotlight lens, the lens are smaller than general shot-light lens height, maximum height 38mm, width 66mm；It is computed this thoroughly
The efficiency of light energy utilization (luminous flux/emitting light flux) of the mirror in 270mm radius is greater than 90%, much higher than general lens
40%；Section optical property of the lens is fairly good, and when being greater than 15 degree, light intensity declines rapidly, can realize applied to illuminator good
Good giddy light by dominated effect.
The optical lens of the realization Homogeneous Circular hot spot of the utility model.The illuminating light distribution angle of lens is 15 degree, illumination
The uniformity is greater than 80%, and light utilization efficiency is greater than 90%.Suitable for lighting areas such as household, commercial lighting and exhibition centers, luminous energy is big
The advantages of part projects on photographed object, both highlighted illuminated object, is in turn avoided the loss of luminous energy, is reached with smaller power
Higher illumination；Section optical property of the lens is fairly good, and the efficiency of light energy utilization is high, and when being greater than 15 degree, light intensity declines rapidly, without miscellaneous
Light, dazzle, belong to Healthy Lighting；The flexibility of the lens is high, and user can select the light of different capacity according to practical illumination requirement
Source collocation；The lens are ultra-thin, and quality is small, mitigate the burden of lamps and lanterns loading lens, reduce lens shared volume in lamps and lanterns, make lamp
Lamps structure is more compact.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the bus figure before the processing of transparent mirror body loss of weight；
Fig. 2 is the bus comparison diagram of transparent mirror body loss of weight before and after the processing；
Fig. 3 is transparent mirror body loss of weight treated front view.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, any modification, equivalent replacement, improvement and so on should be included in the utility model
Within protection scope.
Please refer to shown in Fig. 1 to 3, the utility model realize Homogeneous Circular hot spot optical lens, including transparent mirror body and
It is set to the LED light source of transparent mirror body bottom；The transparent mirror body includes the incidence surface of transparent mirror body bottom part body, side
Free form surface light-emitting surface around the face TIR, center free form surface light-emitting surface and top；The incidence surface is to transparent mirror body outside side
To the hemisphere face of recess；The face TIR is a total internal reflection free form surface；The center free form surface light-emitting surface is free form surface
UV；Free form surface light-emitting surface is free form surface WM around the top.
The hemisphere radius surface of the incidence surface is 10mm.The height of free form surface UV is less than 7mm.The transparent mirror body uses
Refractive index is made of the transparent material of 1.3-4.2.As improvement to above-mentioned technical proposal, the transparent mirror body is PMMA, PC
Or glass material is made.The transparent mirror body maximum height is 38mm, width 66mm.
The basis mechanism of the utility model is:
The incidence surface of lens body bottom is hemisphere face, and LED light source is placed on the centre of sphere, and light is substantially vertical to be incident on spherical surface
On.It is being issued from light source to be incident on central axis angle (range is 0 degree to 40 degree) light with UV line segment around 360 degree of central axis
The free form surface UV that rotation is formed is reflected, and is emitted from free form surface UV；Remaining light (is at the angle of emergence with central axis institute
41 degree to 90 degree) after the face the TIR, that is, total internal reflection surface is totally reflected, it is incident on WM line segment around central axis 360
The free form surface WM that degree rotation is formed is reflected, and is emitted from free form surface WM.The angle of emergence be 0 degree to 40 degree when light with
The angle of emergence increases, and the spot radius being emitted from free form surface UV is also bigger and obtains maximum hot spot when the angle of emergence is 40 degree
Radius；With the increase at beam projecting angle, the angle of emergence is that 41 degree to 90 degree of light is emitted to obtain hot spot by free form surface WM
Radius is smaller, and when the angle of emergence is 90 degree, light obtains critical spot radius, the annular region of uniform-illumination is formed, with freedom
The Homogeneous Circular hot spot complementation that curved surface UV forms the anaclasis of the small shooting angle of light source becomes a big Homogeneous Circular hot spot.
In loss of weight processing, equal proportion scaling is carried out to free form surface UV, changes the size of free form surface UV, without changing
The curvature of some position free form surface UV.Free form surface UV is carried out to the equal proportion of origin scaling, can obtain one it is more frivolous
Lens, significantly become smaller by the visible lens middle section size of Fig. 2, Fig. 3, in Fig. 2 below broken line be that ultra-thin treated
Line, the thin circular arc line in top are then the obtained lines of original free form surface.Free form surface UV loss of weight processing before height be
15mm, treated highly less than 7mm for loss of weight.
In conjunction with the ultra-thin homogeneous circular light spot LED spotlight lens of TIR lens and double free form surface Mixed Designs, using refraction
Rate is the transparent material of 1.3-4.2, and light-emitting angle is 15 degree, and the efficiency of light energy utilization is greater than 90%, and illumination region uniformity of illuminance is big
In 85%, loss of weight processing is carried out to lens by the way of curved section scaling, so that lens is internally recessed, lens maximum height
For 38mm, width 66mm, lens material is saved.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one of the utility model
In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiment or examples
In can be combined in any suitable manner.
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, also not limiting the utility model is only the specific embodiment.Obviously, according to this theory
The content of bright book can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably
The principles of the present invention and practical application are explained, so that skilled artisan be enable to better understand and utilize this
Utility model.The utility model is limited only by the claims and their full scope and equivalents.
Claims (7)
1. a kind of optical lens for realizing Homogeneous Circular hot spot, it is characterised in that: including transparent mirror body and be set to transparent mirror body
The LED light source of bottom；The transparent mirror body includes the incidence surface of transparent mirror body bottom part body, the face TIR of side, center freely song
Free form surface light-emitting surface around face light-emitting surface and top；The incidence surface is the hemisphere face being recessed to transparent mirror body outside direction；
The face TIR is a total internal reflection free form surface；The center free form surface light-emitting surface is free form surface UV；Around the top
Free form surface light-emitting surface is free form surface WM.
2. optical lens according to claim 1, which is characterized in that the hemisphere radius surface of the incidence surface is 10mm.
3. optical lens according to claim 1, which is characterized in that the height of free form surface UV is less than 7mm.
4. optical lens according to claim 1, which is characterized in that the centre of sphere of incidence surface is arranged in the LED light source.
5. optical lens according to claim 1, which is characterized in that the transparent mirror body uses refractive index for 1.3-4.2
Transparent material be made.
6. optical lens according to claim 5, which is characterized in that the transparent mirror body is PMMA, PC or glass material
Material is made.
7. optical lens according to claim 1, which is characterized in that the transparent mirror body maximum height is 38mm, width
For 66mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822117241.0U CN208997998U (en) | 2018-12-17 | 2018-12-17 | A kind of optical lens for realizing Homogeneous Circular hot spot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822117241.0U CN208997998U (en) | 2018-12-17 | 2018-12-17 | A kind of optical lens for realizing Homogeneous Circular hot spot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208997998U true CN208997998U (en) | 2019-06-18 |
Family
ID=66808930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822117241.0U Active CN208997998U (en) | 2018-12-17 | 2018-12-17 | A kind of optical lens for realizing Homogeneous Circular hot spot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208997998U (en) |
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2018
- 2018-12-17 CN CN201822117241.0U patent/CN208997998U/en active Active
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