CN204153699U - A kind of lens and glare prevention LED lamp - Google Patents
A kind of lens and glare prevention LED lamp Download PDFInfo
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- CN204153699U CN204153699U CN201420600622.3U CN201420600622U CN204153699U CN 204153699 U CN204153699 U CN 204153699U CN 201420600622 U CN201420600622 U CN 201420600622U CN 204153699 U CN204153699 U CN 204153699U
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- lens
- delustring
- mold insert
- deep gouge
- light
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Abstract
The utility model discloses a kind of lens and glare prevention LED lamp, the end face of described lens is exiting surface, the side of lens is a fully reflecting surface or reflecting surface, lens base is provided with deep gouge, this deep gouge has makes light enter into the incident side (624) of lens, incident end face, and the incident end face of deep gouge is fixed with delustring mold insert; A kind of glare prevention LED lamp, comprise LED light source and said lens, LED light source is in the center position place of deep gouge notch; The utility model is provided with delustring mold insert at lens deep gouge internal fixtion, and with the former optical system ratio not adding delustring mold insert, the edge glare of inactive area has clear improvement, and the light intensity change of effective coverage, center is very little simultaneously.It is simple that the program has structure, the advantages such as compact, applied widely, versatility is good, cost is low, easy to control, anti-dazzle scope is large.
Description
Technical field
The utility model relates to LED traffic lights technical field, particularly a kind of lens and glare prevention LED lamp.
Background technology
Along with the lifting of control of traffic and road, get more and more at the supervising device of taking pictures at crossing, intelligent transportation light compensating lamp, as one of its part, plays the effect become more and more important.In the process of taking pictures, need stronger light could be clear by scene capture, but high light causes dazzling uncomfortable to the pedestrian in roadside and automobile driver, namely dazzle, for the glare problem that the invalid light of one-lane light compensating lamp produces, the effective optical angle in bicycle road is 14 degree, and dazzle Que Jiao is 20 degree, being namely the light intensity of normal direction 0 degree to monolateral 10 degree of these scopes that rotate a circle, is exactly invalid light beyond 20 degree.
Anti-glare lamp of the prior art is divided into three kinds:
The first scheme as shown in Figure 1, Anti-glare lamp comprises support 1, lens 3, LED light source 2 is provided with in LED light source accommodation space bottom support 1, lens interior is provided with groove 4, and the bottom land of groove 4 is a plane, does not have optically focused effect, therefore the light of intermediate beam is very low for central light strength contribution, central light strength is the light intensity in 0 degree of direction, and namely along the direction of the normal 7 of LED light-emitting area, the normal 7 of LED light-emitting area is also optical axis; According to optical simulation software and actual product test, the light of intermediate beam is no more than 5% for the contribution proportion of central light strength, and affecting very little, is but the basic source of edge glare, and therefore that people can be made to occur is dazzling for the first scheme, makes people uncomfortable.
First scheme as shown in Figure 2, the bottom land 41 of groove 4 is for changing convex outward into, by refraction of light path, intermediate beam is collimated, avoid the generation of invalid dazzle, the program is effective for approximate spot light, but LED light source itself is not spot light, light-emitting area has geometry, this convex outward is close to LED light source simultaneously, cannot realize a light beam all controls within 20 degree of scopes, this convex surface can the geometry imaging of LED out simultaneously, there will be piebald, the lens ensemble mechanical dimension of first scheme is larger, make the spot light that LED light source becomes approximate, intermediate beam can be realized to control within the scope of 20 degree, because lens sizes is larger, therefore corresponding whole lamp build volumes is also very large, manufacturing cost is high.
The third scheme as shown in Figure 3, a delustring grid 6 is placed at its outer, for eliminating the invalid dazzle beyond 20 degree, as Fig. 3 can find out, delustring grid 6 is not only high but also long relative to lens, and make the increase of whole lamp height very many, build is bigger than normal, be unfavorable for the installation of whole lamp, and the cost of delustring grid 6 is very high.
Utility model content
The purpose of this utility model overcomes deficiency in existing product, provide firstly a kind of lens can eliminating dazzle, more further the utility model further provide that a kind of structure is simple, compact, cost is low, not dazzling, the glare prevention LED lamp that can cover LED light source.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
A kind of lens, the end face of described lens is exiting surface, the side of lens is a fully reflecting surface or reflecting surface, lens base is provided with deep gouge, this deep gouge has makes light enter into the incident side (624) of lens, incident end face, and the incident end face of deep gouge is fixed with delustring mold insert.
As preferably, delustring mold insert identical with lens material and both be connected together by supersonic welding.
As preferably, the incident end face of delustring mold insert and deep gouge is bonded together by glue.
As preferably, deep gouge shape is cylindrical or truncated cone-shaped.
As preferably, the shape of delustring mold insert is cylinder or Rotary-table.
As preferably, the size of described delustring mold insert end face is identical with the size of deep gouge bottom land.
As preferably, described delustring mold insert is a solid.
As preferably, delustring mold insert is the plastics or the metal that play photoextinction.
A kind of glare prevention LED lamp, comprise LED light source and said lens, LED light source is in the center position place of deep gouge notch.
As preferably, the position crossing with incident side of the plane residing for the bottom surface of delustring mold insert is just the incidence point of the outermost light path in the effective light region of lens profile.
The beneficial effects of the utility model are as follows:
1, the utility model is provided with delustring mold insert at lens deep gouge internal fixtion, and with the former optical system ratio not adding delustring mold insert, the edge glare of inactive area has clear improvement, and the light intensity change of effective coverage, center is very little simultaneously.It is simple that the program has structure, the advantages such as compact, applied widely, versatility is good, cost is low, easy to control, anti-dazzle scope is large.
2, the utility model is relative to traditional structure, there is compact conformation, with low cost, versatility is good, without hot spot defects such as piebalds, and the advantages such as central light strength impact is little, the most important thing is that naked eyes can not be eliminated to the invalid veiling glare of LED light source and edge in direct viewing, thus fundamentally improve the dazzle of whole lamp, decrease intelligent traffic light and disturb for the light of neighbouring pedestrian, resident, driver, impact is taken pictures required luminous intensity hardly again simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first scheme of the prior art;
Fig. 2 is the structural representation of first scheme of the prior art;
Fig. 3 is the structural representation of the third scheme of the prior art;
Fig. 4 is the structural representation of a kind of glare prevention LED lamp of the utility model;
Fig. 5 is that in embodiment, in TRACEPRO software, light-emitting area is the surface of intensity distribution of the LED light source of 1.7mm × 1.7mm;
Fig. 6 is the curve of light distribution figure arranged in TRACEPRO software in embodiment without delustring mold insert in deep gouge;
Fig. 7 be increase delustring mold insert in embodiment TRACEPRO software, curve of light distribution figure that h is 3mm;
Fig. 8 be increase delustring mold insert in embodiment TRACEPRO software, curve of light distribution figure that h is 3.3mm;
Fig. 9 be increase delustring mold insert in embodiment TRACEPRO software, curve of light distribution figure that h is 3.5mm;
Figure 10 be increase delustring mold insert in embodiment TRACEPRO software, curve of light distribution figure that h is 3.8mm;
Figure 11 be increase delustring mold insert in TRACEPRO software, curve of light distribution figure that h is 4.5mm;
Figure 12 is the illumination effect schematic diagram of LED when delustring mold insert thickness being set in embodiment 0;
Figure 13 is delustring mold insert height 1.7mm in embodiment, and offers the interstitial hole that diameter is 1mm, illumination effect figure when H value is 3.5mm;
Figure 14 is embodiment delustring mold insert height 6.61mm, and interstitial hole diameter is 1mm, the illumination effect figure that delustring mold insert height is 6.61mm, H when being 3.5mm;
Figure 15 is the curve of light distribution figure that the basis based on Figure 14 obtains.
Detailed description of the invention
Below in conjunction with Figure of description, the technical solution of the utility model is described further:
As shown in Figure 4, a kind of glare prevention LED lamp, comprise LED light source 61, lens 62 and support 6, the end face 623 of lens 62 is exiting surface, the side 622 of lens 62 is a fully reflecting surface or reflecting surface, lens 62 bottom surface is provided with deep gouge 621, this deep gouge 621 has the incident side 624 making light enter into lens 62, incident end face 625, LED light source 61 is in the center position place of deep gouge 621 notch, the incident end face 625 of deep gouge 621 is fixed with delustring mold insert 5, the plane residing for bottom surface 51 of delustring mold insert 5 position crossing with incident side 624 is just the incidence point 8 of the outermost light path in effective light region, lens 62 side.
Specifically, delustring mold insert 5 is for playing plastics or the metal of photoextinction, and as delustring mold insert 5 is identical with lens 62 material, both are connected together by supersonic welding; Or delustring mold insert 5 is bonded together by glue with the incident end face 625 of deep gouge 621.
Deep gouge 621 shape is up-small and down-big truncated cone-shaped.The shape of delustring mold insert 5 is cylinder.The intermediate rays of LED light source 61 is blocked by delustring mold insert 5, and therefore intermediate rays cannot penetrate, and the side 622 being in the rays pass through lens 62 of the both sides of intermediate rays is reflected, then collimate light penetrates by the end face 623 of scioptics 62.
Distance h between the notch of delustring mold insert 5 bottom surface and deep gouge 621 is an important parameter, the side 622 of lens 62 is divided into ray effective area S and allowance section Y, if the distance bottom delustring mold insert 5 and between LED light source 61 is bigger than normal, just have light and penetrate light from allowance section Y, be exactly specifically, light directly penetrates from the position beyond the border of the effective coverage S of lens 62 side by the end face of light injection or the direct scioptics 62 of light, now will produce dazzle.If the distance h bottom delustring mold insert 5 and between the notch of deep gouge 621 is on the low side, the too much light beam of the incident side 624 of deep gouge 621 can be caused to be kept off, affect the light intensity of LED illumination intensity and intermediate light.
Therefore, the distance h extremely best h value adjusted between delustring mold insert 5 bottom surface and the notch of deep gouge 621 is needed when designing, namely the position making the plane residing for the bottom surface of the bottom of delustring mold insert 5 or delustring mold insert 5 crossing with the incident side of deep gouge 621 is just the incidence point 8 of the outermost light path of reflecting surface effective coverage S, reflecting surface effective coverage S refers to the effective coverage that reflection place occurs in the incident side of lens 62 light, the side 622 of incidence point 8 scioptics 62 of outermost light path is reflected, then collimate light penetrates by the end face of scioptics 62.Region outside the S of effective coverage, place, lens 62 side is allowance section Y, if there is light to penetrate light from allowance section Y, then can produce glare problem.Intermediate light is blocked by delustring mold insert 5, and intermediate light cannot penetrate, naked eyes cannot direct viewing to LED light source, efficiently solve glare problem.
The utility model is compared with the first scheme in prior art, and the incident end face of deep gouge is fixed with delustring mold insert, and the intermediate rays of LED light source is blocked by delustring mold insert, makes naked eyes cannot direct view led light source, and eliminates the invalid veiling glare beyond 20 degree.
In the utility model and prior art, first scheme contrasts, the intermediate rays of LED light source 61 of the present utility model is blocked by delustring mold insert 5, and therefore intermediate rays cannot penetrate, and of the present utility modelly sacrifices intermediate beam, make its not light spill, thus just there is not the problem of piebald yet.
In the utility model and prior art, the third scheme compares, and its whole height also with originally keeps the same, and make structure compacter, versatility is good, and be therefore conducive to the installation of whole lamp, volume is little.
Needing the distance h extremely best h value adjusted between delustring mold insert 5 bottom surface and the notch of deep gouge 621 when designing, can be realized by the mode of software simulation, comprising the following steps:
Adopt TRACEPRO software to simulate, import in software by a kind of for the utility model structure of glare prevention LED lamp, arrange LED light source light-emitting area and be defined as 1.7mm × 1.7mm, whole lamp is of a size of φ 20.8mm × 13.2mm; The light intensity curve of LED light source self as shown in Figure 5.
By TRACEPRO software whole lamp simulated optical system: as shown in Figure 6, arrange and obtain the original curve of light distribution without delustring mold insert, the initial value obtaining 0 degree of central light strength is 3000cd, and the initial value of half-angle 12 degree of place's light intensity is 200cd, and the initial value of half-angle 14 degree of place's light intensity is 100cd.
As shown in Figure 7, delustring mold insert is increased in TRACEPRO software, and obtaining the curve of light distribution figure that h value is 3mm, the value of central light strength is 2580cd, is 86% of initial value, the light intensity at half-angle 12 degree of places is 100cd, for 50% of initial value, the dazzle in this direction comparatively initial value has decayed 50%, and the light intensity at half-angle 14 degree of places is 40cd, for 60% of initial value, the dazzle in this direction comparatively initial value has decayed 60%;
As shown in Figure 8, delustring mold insert is increased in TRACEPRO software, and obtaining the curve of light distribution figure that h value is 3.3mm, the value of central light strength is 2580cd, is 96.7% of initial value, the light intensity at half-angle 12 degree of places is 100cd, for 50% of initial value, the dazzle in this direction comparatively initial value has decayed 50%, and the light intensity at half-angle 14 degree of places is 40cd, for 60% of initial value, the dazzle in this direction comparatively initial value has decayed 60%;
As shown in Figure 9, delustring mold insert is increased in TRACEPRO software, and obtaining the curve of light distribution figure that h value is 3.5mm, the value of central light strength is 2950cd, is 98.3% of initial value, the light intensity at half-angle 12 degree of places is 100cd, for 50% of initial value, the dazzle in this direction comparatively initial value has decayed 50%, and the light intensity at half-angle 14 degree of places is 40cd, for 60% of initial value, the dazzle in this direction comparatively initial value has decayed 60%;
As shown in Figure 10, delustring mold insert is increased in TRACEPRO software, and obtaining the curve of light distribution figure that h value is 3.8mm, the value of central light strength is 2900cd, is 98.7% of initial value, the light intensity at half-angle 12 degree of places is 100cd, for 50% of initial value, the dazzle in this direction comparatively initial value has decayed 50%, and the light intensity at half-angle 14 degree of places is 40cd, for 60% of initial value, the dazzle in this direction comparatively initial value has decayed 60%;
As shown in figure 11, delustring mold insert is increased in TRACEPRO software, and obtaining the curve of light distribution figure that h value is 4.5mm, the value of central light strength is 2970cd, is 98.8% of initial value, the light intensity at half-angle 12 degree of places is 148cd, for 74% of initial value, the dazzle in this direction comparatively initial value has decayed 26%, and the light intensity at half-angle 14 degree of places is 52cd, for 52% of initial value, the dazzle in this direction comparatively initial value has decayed 48%;
Can draw from above Data Comparison, H is proper between 3.3-3.8.Central light strength decay is within 5%, and at 12 degree, the dazzle in 14 degree of directions has decayed 50% and 60% respectively.
H value is too low, such as 3mm, and central light strength decay reaches 14%.
H value is too high, such as 4.5mm, and the dazzle in 12 degree of .14 degree directions has only decayed 26% and 48% respectively, and effect is not as H value is between 3.3-3.8.
For proving practicality of the present utility model and validity, then carry out the theoretical modeling of delustring mold insert central aperture:
Because delustring mold insert is all absorbed by the light of centre, therefore think from general knowledge and not only the veiling glare beyond 20 degree is eliminated, also the effective light within 20 degree is also absorbed simultaneously, if a hole is opened in centre, the light within 20 degree is only allowed to pass through, can is the light beyond 20 degree eliminated, be better?
Do now following Systems Theory analysis:
LED light source light-emitting area definition 1.7*1.7mm, so diagonal is 2.4mm, so calculate by 2.4mmLED source diameter:
Scheme one, as shown in figure 12, a point (diameter of point is approximately 0) is dug in centre, and delustring mold insert thickness is approximately 0; When H value is 3.5mm, beam angle corresponding to intermediate light is 38 degree, more than 20 degree.
Scheme two, as shown in figure 13, highly brings up to 1.7mm by delustring mold insert 5, and offer penetrating interstitial hole 52 in the middle of delustring mold insert 5, the diameter of interstitial hole 52 is 1mm, H value is 3.5mm, and as figure shows, middle largest beam angle still has 36 degree, more than 20 degree.
Scheme three, as shown in figure 14, interstitial hole 52 diameter is 1mm, delustring mold insert height is 6.61mm, H is 3.5mm, largest beam angle is 20 degree, without the light beyond 20 degree, in tracepro software, then simulates the contribution of this part light, obtain light intensity curve figure as shown in figure 15, in fig .15, central light strength (the namely light intensity in 0 degree of direction, the namely normal orientation of LED light-emitting area), central light strength I0=15.3cd, initial value is 3000,15.3/3000=0.51%, almost negligible.This structure manufacture difficulty is large simultaneously, manufacturability complex structure more of the present utility model, is unfavorable for batch production.
It should be noted that above what enumerate is only a kind of specific embodiment of the present utility model.Obviously, the utility model is not limited to above embodiment, can also have many distortion.
In a word, all distortion that those of ordinary skill in the art can directly derive from content disclosed in the utility model or associate, all should think protection domain of the present utility model.
Claims (10)
1. lens, it is characterized in that, the end face (623) of described lens (62) is exiting surface, the side (622) of lens (62) is a fully reflecting surface or reflecting surface, lens (62) bottom surface is provided with deep gouge (621), this deep gouge (621) has makes light enter into the incident side (624) of lens (62), incident end face (625), and the incident end face (625) of deep gouge (621) is fixed with delustring mold insert (5).
2. a kind of lens according to claim 1, is characterized in that, delustring mold insert (5) identical with lens (62) material and both be connected together by supersonic welding.
3. a kind of lens according to claim 1, is characterized in that, delustring mold insert (5) is bonded together by glue with the incident end face of deep gouge (621).
4. a kind of lens according to claim 1, it is characterized in that, described deep gouge (621) shape is cylindrical or truncated cone-shaped.
5. a kind of lens according to claim 1, it is characterized in that, the shape of described delustring mold insert (5) is cylinder or Rotary-table.
6. a kind of lens according to claim 1, it is characterized in that, the size of described delustring mold insert (5) end face is identical with the size of deep gouge (621) bottom land.
7. a kind of lens according to claim 1, it is characterized in that, described delustring mold insert (5) is a solid.
8. a kind of lens according to claim 1, it is characterized in that, described delustring mold insert (5) is for playing plastics or the metal of photoextinction.
9. a glare prevention LED lamp, is characterized in that, comprise LED light source (61) and the lens described in any one of claim 1 ~ 8 (62), LED light source (61) is in the center position place of deep gouge (621) notch.
10. a kind of glare prevention LED lamp according to claim 9, it is characterized in that, the plane residing for bottom surface (51) of delustring mold insert (5) position crossing with incident side (624) is just the incidence point (8) of the outermost light path in effective light region, lens (62) side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420600622.3U CN204153699U (en) | 2014-10-16 | 2014-10-16 | A kind of lens and glare prevention LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420600622.3U CN204153699U (en) | 2014-10-16 | 2014-10-16 | A kind of lens and glare prevention LED lamp |
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| Publication Number | Publication Date |
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| CN204153699U true CN204153699U (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420600622.3U Expired - Fee Related CN204153699U (en) | 2014-10-16 | 2014-10-16 | A kind of lens and glare prevention LED lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329633A (en) * | 2014-10-16 | 2015-02-04 | 杭州意博高科电器有限公司 | Lens and anti-glare LED (light-emitting diode) lamp |
-
2014
- 2014-10-16 CN CN201420600622.3U patent/CN204153699U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329633A (en) * | 2014-10-16 | 2015-02-04 | 杭州意博高科电器有限公司 | Lens and anti-glare LED (light-emitting diode) lamp |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 311113 568 Huabao street, Qian Yuan Town, Deqing County, Huzhou, Zhejiang Patentee after: ZHEJIANG EBOY HIGH-TECH TECHNOLOGY Co.,Ltd. Address before: 311112 Liangyuan street, Liangzhu street, Yuhang District, Hangzhou, Zhejiang, 326 Patentee before: Hangzhou Eboylamp Electronics Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20211016 |