CN208222420U - LED light-guiding pillar and light-conducting system - Google Patents
LED light-guiding pillar and light-conducting system Download PDFInfo
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- CN208222420U CN208222420U CN201820839232.XU CN201820839232U CN208222420U CN 208222420 U CN208222420 U CN 208222420U CN 201820839232 U CN201820839232 U CN 201820839232U CN 208222420 U CN208222420 U CN 208222420U
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- light
- led light
- guiding pillar
- light guide
- plane
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Abstract
The utility model relates to a kind of LED light-guiding pillar and light-conducting systems, wherein the LED light-guiding pillar includes at least four light guide being successively arranged from the inside to the outside, the refractive index of adjacent light guide is different, adjacent light guide is bonded to each other to form plane of refraction, centrally located light guide is solid construction, and the lateral surface of light guide on the outermost side is reflecting surface.When light transmits in the LED light-guiding pillar, refractive index based on adjacent light guide is different, so that adjacent light guide is bonded to form plane of refraction, light can be reflected in each plane of refraction, under the action of the reflecting surface, light continuous vibrating type refraction and reflection in the LED light-guiding pillar, enable light further to be mixed, mix the light transferred out more uniform.
Description
Technical field
The utility model relates to technical field of LED illumination, more particularly to a kind of LED light-guiding pillar and light-conducting system.
Background technique
Light-guiding pillar is mainly used for light transmission, and light beam is injected from one end of light-guiding pillar, projects, leads from the other end of light-guiding pillar
The structure of light beam directly affects the quality of light beam final output.Multiple stripeds generally are set in the outer wall of light-guiding pillar or will be led
Light beam is designed as non-rotational symmetry structure, so that nondirectional reflection, different light occur when transmitting in light-guiding pillar for light
Be uniformly mixed during doing non-directional reflection, but the uncertainty based on reflection direction, final output hot spot it is uniform
Property is bad.
Summary of the invention
Based on this, it is necessary to a kind of LED light-guiding pillar and light-conducting system are provided, to improve the uniformity of light mixing.
Its technical solution is as follows:
A kind of LED light-guiding pillar, including at least four light guide being successively arranged from the inside to the outside, the refractive index of adjacent light guide
Difference, adjacent light guide are bonded to each other to form plane of refraction, and centrally located light guide is solid construction, on the outermost side to lead
The lateral surface of body of light is reflecting surface.
Above scheme provides a kind of LED light-guiding pillar, by least four light guide being successively arranged from the inside to the outside, and phase
Refractive index between adjacent light guide is different, and adjacent light guide is bonded to form plane of refraction.So that light is being led in light transmission
Each plane of refraction in light beam constantly reflects, and the continuous vibrating type reflection in LED light-guiding pillar, passes through under the action of reflecting surface
The refraction of such vibrating type and reflection are crossed so that light is sufficiently mixed, finally makes the light transferred out mixing more equal
It is even.
Further, the refractive index difference between adjacent light guide is less than 0.5, and from the inside to the outside the refractive index of light guide by
Gradually it is incremented by, or the refractive index of two inside and outside any light guide light guide is identical.
Further, the light guide is axially symmetric structure, the friendship between the reflecting surface and the plane for passing through central axis
Line is the distance between side line, point and central axis on the direction from the incidence end of light guide to exit end on the side line
It gradually increases.
Further, the intersection between the plane of refraction and the plane for passing through central axis is straight line, the side line and position
The straight line parallel between the side line and the central axis.
Further, the intersection between the plane of refraction and the plane for passing through central axis is waveform curve.
Further, the plane of refraction and be round, regular polygon or wave perpendicular to the intersection between the plane of central axis
Shape wave closed curve.
Further, when the intersection between the plane of refraction and the plane perpendicular to central axis is round, the LED is led
The length of light beam is greater than 15 times of the end face diameter of the incidence end of LED light-guiding pillar, the exit end of light guide on the outermost side
End face diameter is 1.5~2.5 times of the end face diameter of incidence end.
Further, the reflecting surface and perpendicular to the intersection between the plane of central axis be waveform closed curve.
A kind of light-conducting system, including LED light source and above-mentioned LED light-guiding pillar, it is guide-lighting that the LED light source is located at the LED
The incidence end of column, the LED light source include the light source of multiple color, and the shorter light source of wavelength is located at the end face of incidence end and relatively leans on
The position at nearly middle part.
Above scheme provides a kind of light-conducting system, mainly by using LED light-guiding pillar described in above scheme, so that
The light that the light-conducting system emits is more uniform.Moreover, used LED light source is the light source of multiple color, pass through
The shorter light source of wavelength is arranged in the position at the closer middle part of injection section of LED light-guiding pillar, enables longer wavelengths of light
It is enough to undergo longer light path during transmission, so that light can be mixed more fully.
Further, the end face of the LED light-guiding pillar incidence end is plane or spherical crown curved surface, the LED light-guiding pillar outgoing
The end face at end is plane or spherical crown curved surface.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of LED light-guiding pillar described in the present embodiment；
Fig. 2 is another structural schematic diagram of LED light-guiding pillar described in the present embodiment；
Fig. 3 is the cross-sectional view of LED light-guiding pillar described in the present embodiment；
Fig. 4 is another cross-sectional view of LED light-guiding pillar described in the present embodiment；
Fig. 5 is the another cross-sectional view of LED light-guiding pillar described in the present embodiment；
Fig. 6 is the structural schematic diagram of light-conducting system described in the present embodiment；
Fig. 7 is the structural schematic diagram that light source described in the present embodiment presses wavelength arrangement.
Description of symbols:
10, light-conducting system, 11, LED light source, 12, LED light-guiding pillar, 121, light guide, 122, plane of refraction, 123, reflecting surface,
124, incidence end, 125, exit end.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The better embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms
It realizes, however it is not limited to embodiments described herein.On the contrary, the purpose of providing these embodiments is that making practical new to this
The disclosure of type understands more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element is referred to as " directly existing " another element "upper",
There is no intermediary elements.Term as used herein "vertical", "horizontal", "left" and "right" and similar statement are
For illustrative purposes, it is not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein packet
Include any and all combinations of one or more related listed items.
As shown in Figures 1 to 5, a kind of LED light-guiding pillar 12 is provided in one embodiment, including is successively covered from the inside to the outside
If at least four light guide 121, the refractive index of adjacent light guide 121 is different, and adjacent light guide 121 is bonded to each other to form folding
Face 122 is penetrated, centrally located light guide 121 is solid construction, and the lateral surface of light guide 121 on the outermost side is reflecting surface
123。
Above scheme provides a kind of LED light-guiding pillar 12, when light transmits in the LED light-guiding pillar 12, based on adjacent
The refractive index of light guide 121 is different, so that the fitting of adjacent light guide 121 forms plane of refraction 122, enables light in each folding
Face 122 is penetrated to reflect, under the action of reflecting surface 123, light continuous vibrating type refraction in the LED light-guiding pillar 12
And reflection, light is further mixed, mixes the light transferred out more uniform.
Further, the light guide 121 being successively arranged from the inside to the outside in above scheme mainly passes through adjacent 121 folding of light guide
The difference for penetrating rate forms the plane of refraction 122, light is enabled constantly to reflect and reflect in LED light-guiding pillar 12, improves mixed
Light effect.Specifically, the light guide 121 is transparent monomers, in manufacturing process, can first integrated thermoplastic shaping it is centrally located
Light guide 121, then in the outside of the light guide 121 of the injection molding successively next light guide 121 of injection molding, so that each
The injection molding of light guide 121 links together, and forms the plane of refraction 122.Or first by the respectively injection molding of each transparent monomers, so
Each transparent monomers are set-located from the inside to the outside afterwards, and are formed between adjacent transparent monomers with guide-lighting glue bonding
The LED light-guiding pillar 12.
Further, to improve the efficiency that light reflects between each light guide 121, enable light described
Mixed in LED light-guiding pillar 12 it is more uniform, in one embodiment, as shown in Figures 1 to 5, will be between adjacent light guide 121
Refractive index difference setting less than 0.5, and from the inside to the outside, the refractive index of light guide 121 is gradually incremented by, or be located at any light guide
The refractive index of two light guides 121 inside and outside 121 is identical.
Above scheme, less than 0.5, enables light to obtain preferably by the refractive index difference between adjacent light guide 121
Mixing.Moreover, further by being gradually incremented by the refractive index setting of each light guide 121 from the inside to the outside, so that light
The case where line is totally reflected in the LED light-guiding pillar 12, avoids light leakage generation.Alternatively, by by any light guide 121
Inside and outside two light guides 121 refractive index setting it is identical, it is described here be located at any light guide 121 inside and outside
Two light guides 121 refer to two light guides 121 connecting with the same light guide 121 so that light is in LED light-guiding pillar 12
The refraction of generating period, so that light mixing is more uniform.
Further, as depicted in figs. 1 and 2, in one embodiment, the light guide 121 is axially symmetric structure, described
Intersection between reflecting surface 123 and the plane for passing through central axis is side line, from the incidence end 124 of light guide 121 to exit end
The distance between point on 125 direction on the side line and central axis gradually increase.Above scheme is by by the leaded light
In the incidence end 124 to the direction of exit end 125 of body 121, the setting of the distance between point and central axis on the side line
It gradually increases, i.e., so that the outer diameter of the LED light-guiding pillar 12 is gradually increased by incidence end 124 to exit end 125, so that most
The hot spot launched eventually is larger, while making the process of the LED light-guiding pillar 12 more convenient.
Further, in one embodiment, as shown in Figure 1, being to enable light is relatively reliable comprehensively to lead from LED
The case where exit end 125 of light beam 12 is launched, and avoiding light from scattering can not project from exit end 125, by the folding
Penetrate face 122 and be set as straight line by the intersection between the plane of central axis, the side line be located at the side line and institute
State the straight line parallel between central axis.
Further, in one embodiment, as shown in Fig. 2, between the plane of refraction 122 and the plane of process central axis
Intersection be waveform curve.By being set as wave by the plane of refraction 122 and by the intersection between the plane of central axis
Shape curve increases refraction number when light transmits in LED light-guiding pillar 12, to further increase the uniform of light mixing
Property.
Specifically, in one embodiment, waveform curve described in above scheme is sine curve, the sine curve
Coincidence formula y=0.05 × sin (2 × π × x), and with the intersection point of the sine curve and 121 incidence end of light guide, 124 end face
For origin, x-axis and central axis are in 0 °~5 ° angles, and the x-axis is forward direction close to the direction of 121 exit end 125 of light guide.
Further, as shown in Figures 3 to 5, in one embodiment, according to the distribution form of light source by the plane of refraction
It 122 and is provided in round perpendicular to the intersection between the plane of central axis, regular polygon or waveform closed curve.Specifically,
In one embodiment, as shown in figure 5, plane of refraction 122 and perpendicular to the intersection between the plane of central axis be wave Shape closed
Curve, and the waveform curve meets formula R=R0+ A × sin (2 × π × θ/T), wherein R is the point on waveform curve
The distance between central axis, θ are orientation angles, R0For the average distance of point and central axis on waveform curve, A is wave
The amplitude of shape, T are the period of waveform.
Further, in one embodiment, when the intersection between the plane of refraction 122 and plane perpendicular to central axis
When for circle, the length of the LED light-guiding pillar 12 is greater than 15 times of the end face diameter of the incidence end 124 of outermost light guide 121,
The end face diameter of the exit end 125 of light guide 121 on the outermost side is 1.5~2.5 times of the end face diameter of incidence end 124.
When light transmits in LED light-guiding pillar 12, by the setting of the light guide 121, enable light in LED light-guiding pillar 12
The refraction and reflection of vibrating type, and to ensure that light has enough light mixing distances, so that light mixing is more uniform, by institute
15 times for stating the end face diameter of the incidence end 124 greater than LED light-guiding pillar 12 of the length setting of LED light-guiding pillar 12.Moreover, passing through
By the end face diameter of the exit end 125 of light guide 121 on the outermost side be set as the end face diameter of incidence end 124 1.5~
2.5 times, while ensureing light efficiency of transmission, so that the spot size transferred out is moderate.
It further, is the uniformity for further increasing light mixing, as shown in Figures 3 to 5, in one embodiment,
It is waveform closed curve by the reflecting surface 123 and perpendicular to the intersection between the plane of central axis.
As shown in Figure 6 and Figure 7, a kind of light-conducting system 10 is provided in another embodiment, including LED light source 11 and upper
The LED light-guiding pillar 12 stated, the LED light source 11 are located at the incidence end 124 of the LED light-guiding pillar 12, and the LED light source 11 includes
The light source of multiple color, and the shorter light source of wavelength is located at the position at the closer middle part in end face of incidence end 124.
Above scheme provides a kind of light-conducting system 10, by the way that any of the above-described LED light-guiding pillar as described in the examples is arranged
12, so that the light that the LED light source 11 is launched after the transmission of the LED light-guiding pillar 12, can mix more
It is even.And as shown in fig. 7, the LED light source 11 is the light source for including multiple color, in the position that the LED light source 11 is arranged
When, the shorter light source of wavelength is placed on to position of the end face close to middle part of incidence end 124, longer wavelengths of light source is placed on
The end face of incidence end 124 is close to the position of periphery, so that longer wavelengths of light can undergo more light path, further protects
Barrier light is sufficiently mixed, and the mixed effect of output light is improved.
Further, in one embodiment, the end face of the incidence end 124 of the LED light-guiding pillar 12 is plane or spherical crown
Curved surface, the end face of the exit end 125 of the LED light-guiding pillar 12 are plane or spherical crown curved surface.It in the design process, can be according to making
With needs, plane or spherical crown curved surface are set by the end face of 12 incidence end 124 of LED light-guiding pillar and exit end 125, to meet
The demand of emergent light hot spot.Such as emergent light spot can be made more by setting spherical crown curved surface for the end face of exit end 125
Convergence.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of LED light-guiding pillar, which is characterized in that including at least four light guide being successively arranged from the inside to the outside, adjacent light guide
Refractive index it is different, adjacent light guide is bonded to each other to form plane of refraction, and centrally located light guide is solid construction, is located at most
The lateral surface of the light guide in outside is reflecting surface.
2. LED light-guiding pillar according to claim 1, which is characterized in that the refractive index difference between adjacent light guide is less than
0.5, and the refractive index of light guide is gradually incremented by from the inside to the outside, or two inside and outside any light guide light guide
Refractive index is identical.
3. LED light-guiding pillar according to claim 1 or 2, which is characterized in that the light guide is axially symmetric structure, described
Intersection between reflecting surface and the plane for passing through central axis is side line, institute on the direction from the incidence end of light guide to exit end
The distance between point on the line of side and central axis is stated to gradually increase.
4. LED light-guiding pillar according to claim 3, which is characterized in that the plane of refraction and by central axis plane it
Between intersection be straight line, the side line and the straight line parallel between the side line and the central axis.
5. LED light-guiding pillar according to claim 3, which is characterized in that the plane of refraction and by central axis plane it
Between intersection be waveform curve.
6. LED light-guiding pillar according to claim 3, which is characterized in that the plane of refraction and the plane perpendicular to central axis
Between intersection be round, regular polygon or waveform closed curve.
7. LED light-guiding pillar according to claim 6, which is characterized in that when the plane of refraction and putting down perpendicular to central axis
When intersection between face is round, the length of the LED light-guiding pillar is greater than the 15 of the end face diameter of the incidence end of LED light-guiding pillar
Times, the end face diameter of the exit end of light guide on the outermost side is 1.5~2.5 times of the end face diameter of incidence end.
8. LED light-guiding pillar according to claim 3, which is characterized in that the reflecting surface and the plane perpendicular to central axis
Between intersection be waveform closed curve.
9. a kind of light-conducting system, which is characterized in that including LED light source and the described in any item LED light-guiding pillars of claim 1 to 8,
The LED light source is located at the incidence end of the LED light-guiding pillar, and the LED light source includes the light source of multiple color, and wavelength is shorter
Light source be located at incidence end the closer middle part in end face position.
10. light-conducting system according to claim 9, which is characterized in that the end face of the LED light-guiding pillar incidence end is plane
Or spherical crown curved surface, the end face of the LED light-guiding pillar exit end are plane or spherical crown curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820839232.XU CN208222420U (en) | 2018-05-31 | 2018-05-31 | LED light-guiding pillar and light-conducting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820839232.XU CN208222420U (en) | 2018-05-31 | 2018-05-31 | LED light-guiding pillar and light-conducting system |
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| Publication Number | Publication Date |
|---|---|
| CN208222420U true CN208222420U (en) | 2018-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820839232.XU Expired - Fee Related CN208222420U (en) | 2018-05-31 | 2018-05-31 | LED light-guiding pillar and light-conducting system |
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| CN (1) | CN208222420U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613137A (en) * | 2018-05-31 | 2018-10-02 | 广州赛西标准检测研究院有限公司 | LED light-guiding pillars and light-conducting system |
-
2018
- 2018-05-31 CN CN201820839232.XU patent/CN208222420U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613137A (en) * | 2018-05-31 | 2018-10-02 | 广州赛西标准检测研究院有限公司 | LED light-guiding pillars and light-conducting system |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 510170 First to Second Floors, Building 10, 828 Maogang Road, Huangpu District, Guangzhou City, Guangdong Province Co-patentee after: CHINA ELECTRONICS STANDARDIZATION INSTITUTE Patentee after: GUANGZHOU CESI STANDARD DETECTION RESEARCH INSTITUTE Co.,Ltd. Address before: 510170 First Floor of Self-compiled M2 Building, 228-238 Qiaozhong Road, Liwan District, Guangzhou City, Guangdong Province Co-patentee before: CHINA ELECTRONICS STANDARDIZATION INSTITUTE Patentee before: GUANGZHOU CESI STANDARD DETECTION RESEARCH INSTITUTE Co.,Ltd. |
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| CP02 | Change in the address of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |