CN217978676U - Ultra-low glare track lamp lens - Google Patents
Ultra-low glare track lamp lens Download PDFInfo
- Publication number
- CN217978676U CN217978676U CN202222105640.1U CN202222105640U CN217978676U CN 217978676 U CN217978676 U CN 217978676U CN 202222105640 U CN202222105640 U CN 202222105640U CN 217978676 U CN217978676 U CN 217978676U
- Authority
- CN
- China
- Prior art keywords
- light
- lens
- hole
- inlet hole
- refraction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to a lens, in particular to an ultra-low glare track lamp lens, the whole lens is in a rotary body shape and comprises a light inlet cambered surface, a light inlet side surface, a light outlet reflection side surface, a light outlet refraction cambered surface and a total reflection surface; the light inlet hole cambered surface and the side surface of the light inlet hole are positioned at the bottom of the lens and form a concave light inlet hole, the top edge of the side surface of the light inlet hole is connected with the light inlet hole cambered surface, and the bottom edge of the side surface of the light inlet hole is connected with the bottom surface of the lens; the light-emitting surface of the lens is formed by the light-emitting hole reflection side surface and the light-emitting hole refraction cambered surface and is positioned at the top of the lens, and the light-emitting hole reflection side surface is positioned at the central position of the light-emitting hole refraction cambered surface and faces the light-emitting hole cambered surface to form a conical reflection surface; the total reflection surface is a side surface of the lens, is upwards connected to the edge of the refraction cambered surface of the light outlet and is downwards connected to the bottom surface of the lens. The lens has the advantages of low glare and high brightness.
Description
Technical Field
The utility model belongs to the technical field of commercial illumination and specifically relates to an ultra-low dizzy track lamp lens.
Background
When the existing commercial lighting lamp is applied, when the traditional Total Internal Reflection (TIR) lens is adopted as an optical mode for light distribution, the common problems are mainly reflected in the trade-off between the efficiency and the glare. Conventional TIR lens structures split the light emitted by the LED into two portions, one being a middle refractive portion and the other being side reflective portions. At present, main sources of visual glare to a certain extent are reflected in the middle refraction part, light of the part is directly refracted to emit light, the light is refracted to directly exit, the refraction process of a light path is short, and the visual glare of the part is particularly serious. However, in order to achieve high luminous efficiency as much as possible, two parts of light emitted by the LED must be used, but since the light-emitting mode of the middle refracted light is the direct refracted light, especially when the lamp is viewed directly, the light in the middle part is directly projected to eyes, which is very glaring. However, some people design the lens to avoid that the middle refracted light directly emits light to cause high glare, and directly cover the middle refracted light on the top of the middle refracted light by using a device such as a lightproof black awl, and directly discard the part of light, so that the problem of glare is solved to a certain extent, but the efficiency of the whole lens is very low because the middle refracted light is directly shielded, and only 50% of efficiency can be left after the middle refracted light is shielded under partial size, thereby seriously affecting the brightness and efficiency parameters of the whole lamp.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need for an ultra-low glare track light lens that addresses at least one of the problems described above.
An ultra-low glare track lamp lens, characterized in that: the lens is integrally in a shape of a rotator and comprises a light inlet hole cambered surface, a light inlet hole side surface, a light outlet hole reflection side surface, a light outlet hole refraction cambered surface and a total reflection surface;
the light inlet hole cambered surface and the side surface of the light inlet hole are positioned at the bottom of the lens and form a sunken light inlet hole, the top edge of the side surface of the light inlet hole is connected with the light inlet hole cambered surface, and the bottom edge of the side surface of the light inlet hole is connected with the bottom surface of the lens;
the light-emitting surface of the lens is formed by the light-emitting hole reflection side surface and the light-emitting hole refraction cambered surface and is positioned at the top of the lens, and the light-emitting hole reflection side surface is positioned at the central position of the light-emitting hole refraction cambered surface and faces the light-emitting hole cambered surface to form a conical reflection surface;
the total reflection surface is a lens side surface, is upwards connected to the edge of the light outlet refraction arc surface, and is downwards connected to the bottom surface of the lens.
As a further aspect of the present invention: the light inlet hole arc surface protrudes towards the bottom direction of the lens, the Gaussian curvature range of the light inlet hole arc surface is 0.0047-0.2481, the maximum value of the Gaussian curvature is the center of the light inlet hole arc surface, and the minimum value is the edge.
As a further aspect of the present invention: the side surface of the light inlet hole is narrow at the top and wide at the bottom, and the included angle between a bus and the central axis of the lens is 10 degrees.
As a further aspect of the present invention: the reflecting side surface of the light-emitting hole is an inverted conical side surface, and the included angle between a bus of the light-emitting hole and the central axis of the lens is 35 degrees.
As a further aspect of the present invention: the refraction arc surface of the light outlet is concave downwards towards the bottom of the lens, the Gaussian curvature range of the refraction arc surface is 0.0005-0.0009, the maximum value of the Gaussian curvature is the joint with the reflection side surface of the light outlet, and the minimum value is the joint with the top of the lens.
As a further aspect of the present invention: the total reflection surface is the outermost surface of the lens, the Gaussian curvature range of the total reflection surface is 0.0006-0.0027, and the Gaussian curvature is gradually increased from top to bottom.
As a further aspect of the present invention: and a plurality of convex refraction surfaces which are closely arranged are arranged on the surface of the light outlet refraction arc surface.
As a further aspect of the present invention: the convex refracting surface has a gaussian curvature of 0.4444.
The ultra-low glare track lamp lens adopts the combination of the light inlet cambered surface, the light inlet side surface, the light outlet reflection side surface, the light outlet refraction cambered surface and the total reflection surface, so that the ratio of internal light to external light is adjusted, the light refraction and reflection path is improved, the light of the middle refraction part is kept without reducing the efficiency, the light is not directly refracted out to form glare, the mode not only keeps about 30 percent of light of the middle refraction part, but also increases the light path refraction and reflection path, and the glare effect is greatly reduced after the light is emitted compared with the prior mode of directly refracting the light.
Drawings
Fig. 1 is a cross-sectional view of an embodiment of the invention;
fig. 2 is a first structural schematic diagram of an embodiment of the present invention;
fig. 3 is a second schematic structural diagram of the embodiment of the present invention;
fig. 4 is an optical diagram of an embodiment of the present invention;
fig. 5 is a light extraction efficiency diagram of an embodiment of the present invention;
fig. 6 is a light path diagram of comparative example one of the present invention;
fig. 7 is a light extraction efficiency diagram of comparative example one of the present invention;
fig. 8 is a light path diagram of a second comparative example of the present invention;
fig. 9 is a light extraction efficiency diagram of comparative example of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following description, with reference to the accompanying drawings and embodiments, will explain in further detail the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "central," "longitudinal," "lateral," "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Referring to fig. 1-3, an ultra-low glare orbit lamp lens is a revolving lens, which includes a light entrance arc surface 1, a light entrance side surface 2, a light exit reflection side surface 3, a light exit refraction arc surface 4, and a total reflection surface 5;
the light inlet hole cambered surface 1 and the light inlet hole side surface 2 are positioned at the bottom of the lens and form a concave light inlet hole, the top edge of the light inlet hole side surface 2 is connected with the light inlet hole cambered surface 1, and the bottom edge of the light inlet hole side surface 2 is connected with the bottom surface of the lens;
the light-emitting surface of the lens is formed by the light-emitting hole reflection side surface 3 and the light-emitting hole refraction arc surface 4 and is positioned at the top of the lens, and the light-emitting hole reflection side surface 3 is positioned at the central position of the light-emitting hole refraction arc surface 4 and faces the light-entering hole arc surface 1 to form a conical reflection surface;
the total reflection surface 5 is a lens side surface, is upwards connected to the edge of the light outlet refraction arc surface 4, and is downwards connected to the bottom surface of the lens.
Furthermore, the light inlet cambered surface 1 protrudes towards the bottom of the lens, the gaussian curvature range is 0.0047-0.2481, the maximum value of the gaussian curvature is the center of the light inlet cambered surface 1, and the minimum value is the edge.
Furthermore, the side surface 2 of the light inlet hole is narrow at the top and wide at the bottom, and the included angle between the generatrix of the side surface and the central axis of the lens is 10 degrees.
Furthermore, the light exit hole reflection side surface 3 is an inverted conical side surface, and the included angle between the generatrix of the light exit hole reflection side surface and the central axis of the lens is 35 degrees.
Furthermore, the light exit hole refraction arc surface 4 is concave downwards towards the bottom of the lens, the Gaussian curvature range is 0.0005-0.0009, the maximum value of the Gaussian curvature is the joint with the light exit hole reflection side surface 3, and the minimum value is the joint with the top of the lens.
Furthermore, the total reflection surface 5 is the outermost surface of the lens, and the gaussian curvature range of the total reflection surface is 0.0006 to 0.0027, and the gaussian curvature is gradually increased from top to bottom.
Furthermore, a plurality of convex refraction surfaces 6 which are closely arranged are arranged on the surface of the light outlet refraction arc surface 4.
Further, the convex refracting surface 6 has a gaussian curvature of 0.4444.
Referring to fig. 4-5, fig. 4 shows a light-emitting optical path of the lens disclosed in the present application, a point-shaped LED light source is disposed at the bottom of the lens, at this time, light emitted by the LED is divided into two parts, one part of the light is directly emitted from the middle light-inlet arc surface 1, reflected by the light-outlet reflection side surface 3 at the upper end to the total reflection surface 5, and then reflected by the total reflection surface 5 to the top light-outlet refraction arc surface 4 to refract the light, the optical path has a long path length and has multiple refraction and reflection light-emitting, and the part of the light has low glare and is not glaring; the other part is emitted from the side edge refraction part to the total reflection surface and then is emitted from the upper end light-emitting cambered surface, the light path process is longer, and the glare of the part of light is relatively better and less glaring. At the moment, the overall efficiency of the structure is basically close to the highest state of a normal TIR lens, and all light is reflected and reflected to be utilized and then directly emitted. The integral efficiency is high, the glare of the middle part is low, so that the lower glare can increase the comfort of people when the people look at the light-emitting center of the lamp in most use scenes, and the low glare can not be dazzled. According to the graph shown in fig. 5, the light extraction efficiency is as high as 0.87946 through computer software simulation.
In comparison example I, please refer to fig. 6-7, fig. 6 shows a conventional light-emitting manner of the TIR lens in the prior art of the present application, where light emitted from the LED is divided into two parts, one part of the light is directly emitted from the middle refraction part and is refracted again through the light-emitting arc surface at the upper end, the light path process is short and is directly refracted, and glare of the part of the light is severe and very glaring; the other part is emitted from the side edge refraction part to the total reflection surface and then is emitted from the upper end light-emitting cambered surface, the light path process is longer, and the glare of the part of light is relatively better and less glaring. At the moment, the efficiency of the whole structure is the highest state of a normal TIR lens, and all light is refracted, reflected and utilized and then directly emitted. Although the overall efficiency is high, the glare of the middle part is high, so that the comfort of people is seriously reduced by the glare when the people look at the light-emitting center of the lamp in a part of using scenes, and the effect of the lamp is difficult to observe due to the strong glare. As shown in fig. 7, the light extraction efficiency is 0.88631.
In comparison example II, referring to FIGS. 8-9, FIG. 8 shows that when the TIR lens structure is in the middle light-out blocking mode, the light emitted from the LED is divided into two parts, one part is directly emitted from the middle refraction part, but a light-blocking structure is added on the top of the upper end, and the structure directly covers the middle light-out position, directly blocks the light in the middle part and directly discards the light in the middle part. The other part is emitted from the side edge refraction part to the total reflection surface and then is emitted from the upper end light-emitting cambered surface, the light path process is longer, and the glare of the part of light is relatively better and less glaring. In this case, the overall efficiency of the structure is very low, and the light ratio in the middle part can be more than 50% of the whole structure and at least about 30% under the condition of certain size. Although the glare of the structure is reduced, the overall efficiency is reduced, so that the brightness of the whole lamp is reduced, the efficiency value is low, and partial use scenes cannot be met. As shown in fig. 9, the light extraction efficiency of this method is 0.56387, which is the lowest of the three methods.
In the two comparative examples and the embodiment of the present application, the conventional TIR lens efficiency refers to the ratio of the luminous flux emitted by the LED that is actually left after being refracted and reflected by the lens, wherein the ratio mainly relates to the material light loss of the lens itself, the loss of the lens structure design, and the like, and the data is obtained through simulation in optical software (LightTools) and can also be obtained through testing by an optical testing instrument such as a photometric distributor/integrating sphere, and specifically, the visual representation of the light extraction efficiency in the actual use scene is the brightness of the lamp under the condition that the light emitting sources are the same.
The above three forms of the light-emitting efficiency comparison further perform computer simulation for the three forms of glare values;
the glare value UGR generally refers to a psychological parameter for measuring a subjective reaction of discomfort caused by light emitted from a lighting device in an indoor visual environment to human eyes, and the value of the psychological parameter can be calculated by a CIE unified glare value formula according to a specified calculation condition. The formula is: UGR =8lg (0.25/Lb) Σ ((La) a) 2 *ω)/(P 2 )). From this formula, the UGR value can be calculated. Usually, the optical design is simulated by optical software (LightTools) or tested by using a broadness distribution meter. The following data were obtained using optical software simulations.
Table 1 comparative example-glare value table
TABLE 2 comparative example glare value Table
TABLE 3 Glare value Table in the examples of the present application
From the above data diagram it follows that: the conventional light-emitting mode adopting the TIR structure has a high aging value of 88%, the effective efficiency of a transparent PC material (Polycarbonate, PC for short) used by a common optical lens under a certain thickness is 89%, the loss value after deducting the material loss is 1%, and the conventional light-emitting mode is basically close to the highest efficiency value after the loss of a normal material; however, the unified glare value is the largest among three, from the classification level of the unified glare value UGR, UGR19 is at the limit value of comfortable and uncomfortable feelings for human eyes, when the value is larger than 19, the feeling of discomfort for human eyes is more uncomfortable due to glare increase, and when the value is smaller than 19, the discomfort feeling is less likely to be caused. Since this value exceeds 20, it is easy to further cause discomfort in actual use. And the efficiency is lower when the middle shading light-emitting mode is adopted. Only 56%, the loss value has reached 33%, and it can be seen that a larger part of the light is lost in the light-shielding and light-emitting manner; the unified glare value is the minimum value among three, the value is less than 16, and the unified glare value can bring more comfortable effect to people in actual use. Finally, the efficiency of the low-glare high-efficiency light emitting mode is basically consistent with that of the conventional light emitting mode, the efficiency also reaches 88%, and the loss value is 1%. Therefore, the light emitting mode of the structure does not lose efficiency. Meanwhile, because the glare is improved, the unified glare value under the structure is in the middle of the three values, and the value is 17. Also below the 19-threshold glare value. Can also bring comfortable effects to people when in actual use.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description in any form, and although the present invention has been disclosed with reference to the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make modifications or changes equivalent to the equivalent embodiment of the above embodiments without departing from the scope of the present invention.
Claims (8)
1. An ultra-low glare track lamp lens, characterized in that: the lens is integrally in a shape of a revolution body and comprises a light inlet hole cambered surface (1), a light inlet hole side surface (2), a light outlet hole reflection side surface (3), a light outlet hole refraction cambered surface (4) and a total reflection surface (5);
the light inlet hole cambered surface (1) and the light inlet hole side surface (2) are positioned at the bottom of the lens and form a concave light inlet hole, the top edge of the light inlet hole side surface (2) is connected with the light inlet hole cambered surface (1), and the bottom edge of the light inlet hole side surface (2) is connected with the bottom surface of the lens;
the light-emitting hole reflection side face (3) and the light-emitting hole refraction arc face (4) form a light-emitting face of the lens and are positioned at the top of the lens, and the light-emitting hole reflection side face (3) is positioned at the central position of the light-emitting hole refraction arc face (4) and faces the light-entering hole arc face (1) to form a conical reflection face;
the total reflection surface (5) is a lens side surface, is upwards connected to the edge of the light outlet refraction arc surface (4), and is downwards connected to the bottom surface of the lens.
2. The ultra-low glare track light lens of claim 1, wherein: the light inlet hole cambered surface (1) protrudes towards the bottom of the lens, the Gaussian curvature range of the light inlet hole cambered surface is 0.0047-0.2481, the maximum value of the Gaussian curvature is the center of the light inlet hole cambered surface (1), and the minimum value is the edge.
3. The ultra-low glare track light lens of claim 1, wherein: the side surface (2) of the light inlet hole is narrow at the top and wide at the bottom, and the included angle between a bus and the central axis of the lens is 10 degrees.
4. The ultra-low glare track light lens of claim 1, wherein: the light-emitting hole reflection side surface (3) is an inverted conical side surface, and the included angle between a bus of the light-emitting hole reflection side surface and the central axis of the lens is 35 degrees.
5. The ultra-low glare track light lens of claim 1, wherein: the light-emitting hole refraction arc surface (4) is concave downwards towards the bottom of the lens, the Gaussian curvature range of the light-emitting hole refraction arc surface is 0.0005-0.0009, the maximum value of the Gaussian curvature is a joint with the light-emitting hole reflection side surface (3), and the minimum value is a joint with the top of the lens.
6. The ultra-low glare track light lens of claim 1, wherein: the total reflection surface (5) is the outermost surface of the lens, the Gaussian curvature range is 0.0006-0.0027, and the Gaussian curvature is gradually increased from top to bottom.
7. The ultra-low glare track light lens of claim 1, wherein: a plurality of convex refraction surfaces (6) which are closely arranged are arranged on the surface of the light outlet refraction arc surface (4).
8. The method of claim 7, wherein: the convex refraction surface (6) has a Gaussian curvature of 0.4444.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222105640.1U CN217978676U (en) | 2022-08-10 | 2022-08-10 | Ultra-low glare track lamp lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222105640.1U CN217978676U (en) | 2022-08-10 | 2022-08-10 | Ultra-low glare track lamp lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217978676U true CN217978676U (en) | 2022-12-06 |
Family
ID=84257984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222105640.1U Active CN217978676U (en) | 2022-08-10 | 2022-08-10 | Ultra-low glare track lamp lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217978676U (en) |
-
2022
- 2022-08-10 CN CN202222105640.1U patent/CN217978676U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2891536C (en) | Artificial lighting system for simulating a natural lighting | |
| JP6868016B2 (en) | Lighting system and how to generate light output | |
| CN105351822B (en) | LED blackboard lamp | |
| WO2013104878A1 (en) | Improved optical systems and led luminaires | |
| CN201897094U (en) | LED (light-emitting diode) plate-type lamp with single-faced light guide function | |
| CN110274168B (en) | Lens module grid lighting lamp | |
| TW201414957A (en) | Illumination device | |
| CN217978676U (en) | Ultra-low glare track lamp lens | |
| US20120039076A1 (en) | Energy-saving lighting device with even distribution of light | |
| CN112254026A (en) | Anti-dazzle lamp and lighting arrangement method adopting same | |
| CN217638769U (en) | Transparent object surface scratch defect detection device | |
| CN106838666B (en) | Small hole light emitting lamp with controllable shading angle | |
| CN206875349U (en) | Reflection unit and light source module group | |
| JP2011253711A (en) | Lighting system | |
| CN107798892A (en) | A kind of traffic lights | |
| CN201306675Y (en) | Lens | |
| CN210950941U (en) | Panel light with skylight effect | |
| CN114352959A (en) | LED lighting mechanism | |
| CN218720782U (en) | Side income formula desk lamp optical lens that luminous degree of consistency is high from top to bottom | |
| CN208222418U (en) | A kind of novel optical lens | |
| WO2012014239A1 (en) | Optical system for uniform distribution of light emitted by light sources | |
| CN102606901B (en) | LED (light emitting diode) planar light source | |
| CN117190126A (en) | Ultra-low glare lighting lens and lamp | |
| CN101634429A (en) | Light guide device and lighting device using same | |
| CN113551171B (en) | Dizziness-preventing optical structure and illumination die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |