CN219367496U - Strip lens of asymmetric grading - Google Patents
Strip lens of asymmetric grading Download PDFInfo
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- CN219367496U CN219367496U CN202320111299.2U CN202320111299U CN219367496U CN 219367496 U CN219367496 U CN 219367496U CN 202320111299 U CN202320111299 U CN 202320111299U CN 219367496 U CN219367496 U CN 219367496U
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Abstract
The utility model discloses a strip lens with asymmetric light distribution, which comprises a lens body, wherein the right side of the lens body is a quasi-straight light distribution structure and comprises a third light incident surface, a right side curved surface, a right side total reflection surface and the right end of a light emergent surface; the left side of the lens body is a convergent light distribution structure which comprises a second light incident surface, a left curved surface, a left total reflection surface and the left end of the light emergent surface; the absolute value of the slope of the left side total reflection surface is larger than that of the right side total reflection surface, so that the light rays reflected by the left side total reflection surface can be emitted rightward from the left end of the light emitting surface and converged below the light emitting surface, and meanwhile, the light rays reflected by the right side total reflection surface can be collimated and emitted from the light emitting surface; the curvature of the left curved surface is different from that of the right curved surface; the depth of the second light incident surface is different from that of the third light incident surface; the different depths and curvatures are set to enable partial light rays emitted by the LED light source to generate polarized light distribution effect after being reflected by the left side total reflection surface, glare generated by direct incidence human eyes is reduced, and the practicality is high.
Description
Technical Field
The utility model belongs to the technical field of illumination, and particularly relates to a strip lens with asymmetric light distribution.
Background
Lighting fixtures are everywhere visible in human life; the conventional fluorescent lamp may cause bad phenomena such as glare, dim light, etc., thereby affecting the vision health and eye comfort of the user. Later, with the development of LED (Lighting Emitting Diode, light emitting diode) lighting technology and optical lens technology, existing lighting fixtures have performed secondary optical design on LEDs to redistribute light rays by adding lenses.
However, when the LED distributes light through the lens, the light is generally concentrated in a certain irradiation range as much as possible, but it is impossible to concentrate and uniformly concentrate all the light in a certain irradiation range, so that glare with extremely strong light intensity is easily generated and directed to eyes, resulting in discomfort to the user.
As in the prior art CN201520098300.8, an LED bar lamp is disclosed, wherein the problem that an LED lamp generates glare is also mentioned; this prior art is directed to glare exiting a lens in a direction along the length of a bar LED lamp.
However, the anti-dazzle effect of the light distribution lens of the conventional strip-shaped LED lamp is not ideal, so that the use experience of a user is affected; therefore, a strip lens for asymmetric light distribution is demanded.
Disclosure of Invention
Aiming at the problems in the related art, the utility model provides an asymmetric light distribution strip lens to overcome the technical problems in the prior art.
The technical scheme of the utility model is realized as follows: the strip-shaped lens with the asymmetric light distribution comprises a strip-shaped lens body with the same section, wherein an incident light groove formed on the lens body is formed on the upper side of the lens body, the incident light groove is concaved on the lens body and extends along the lens body, and the lower side of the lens body is a light-emitting surface;
the inner wall of the incident light groove comprises a first light incident surface positioned at the bottom, wherein the first light incident surface is an arc-shaped curved surface which is divided into a left curved surface and a right curved surface along the middle, and the curvatures of the left curved surface and the right curved surface are different; the inner wall of the incident light groove further comprises a second light incident surface positioned on the left side wall, the second light incident surface is connected with the left side curved surface at the bottom of the incident light groove, the inner wall of the incident light groove comprises a third light incident surface positioned on the right side wall, the third light incident surface is connected with the right side curved surface at the bottom of the incident light groove, and the depth of the second light incident surface is different from that of the third light incident surface;
the width of the upper end of the lens body is smaller than that of the lower end of the lens body;
the lens further comprises total reflection surfaces arranged on the outer walls of the two sides of the lens body, the total reflection surfaces on the two sides extend and transition between the upper end and the lower end of the lens body, and the absolute values of slopes of the left total reflection surface and the right total reflection surface are different.
Preferably, the right side of the lens body is a collimated light distribution structure, which comprises the third light incident surface, a right curved surface, a right total reflection surface and the right end of the light emergent surface, after the right light is emitted from the LED light source opposite to the incident light slot, part of light rays are emitted into the lens body from the third light incident surface to the right total reflection surface, reflected by the right total reflection surface and collimated and emitted from the light emergent surface, and the other part of light rays are emitted into the lens body from the right curved surface and collimated and emitted from the light emergent surface directly;
the left side of the lens body is a convergent light distribution structure, the convergent light distribution structure comprises a second light inlet surface, a left curved surface, a left total reflection surface and the left end of a light outlet surface, after left light rays are emitted from the LED light source, part of the light rays are emitted into the lens body from the second light inlet surface to the left total reflection surface, reflected by the left total reflection surface, emitted from the light outlet surface to the right, and the other part of the light rays are emitted from the light outlet surface to the right after being emitted into the lens body from the left curved surface.
Preferably, in the process that the total reflection surfaces on two sides of the lens body extend from bottom to top, the absolute value of the slope of the left total reflection surface is larger than that of the right total reflection surface, so as to ensure that the light rays reflected by the left total reflection surface can exit from the left end of the light exit surface to the right and converge below the light exit surface, and meanwhile, the light rays reflected by the right total reflection surface can be collimated and exit from the light exit surface.
Preferably, the depth of the second light incident surface is greater than the depth of the third light incident surface.
Preferably, the curvature of the left curved surface is smaller than the curvature of the right curved surface.
Different depths and curvatures are set, so that partial light rays emitted by the LED light source can generate polarized light distribution effect after being reflected by the left side total reflection surface.
Preferably, the LED light source is an LED light bar.
Preferably, the included angle between the left curved surface and the second light incident surface is smaller than the included angle between the right curved surface and the third light incident surface.
Preferably, the light emitting surface is a plane.
Preferably, a first positioning part and a second positioning part are arranged on the left side and the right side of the lens body;
further, a limiting groove connected with the bottom of the right side total reflection surface is formed in the second positioning part; the first positioning part and the second positioning part are used for being connected with the lamp in a clamping mode, so that the lens body is fixed inside the lamp.
The utility model has the beneficial effects that:
(1) The utility model provides an asymmetric light distribution strip lens, which comprises a lens body, wherein the right side of the lens body is a quasi-straight light distribution structure and comprises a third light incident surface, a right side curved surface, a right side total reflection surface and the right end of a light emergent surface; the left side of the lens body is a convergent light distribution structure which comprises a second light incident surface, a left curved surface, a left total reflection surface and the left end of the light emergent surface; the absolute value of the slope of the left side total reflection surface is larger than that of the right side total reflection surface, so that the light rays reflected by the left side total reflection surface can be emitted rightward from the left end of the light emitting surface and converged below the light emitting surface, and meanwhile, the light rays reflected by the right side total reflection surface can be collimated and emitted from the light emitting surface;
(2) The curvatures of the left curved surface and the right curved surface are different; the depth of the second light incident surface is different from that of the third light incident surface; different depths and curvatures are set so that partial light rays emitted by the LED light source can generate polarized light distribution effect after being reflected by the left side total reflection surface;
(3) The left side and the right side of the lens body are also provided with a first positioning part and a second positioning part, so that the lens body can be fixed inside the lamp.
Drawings
FIG. 1 is a schematic view of the overall structure of a strip lens according to the present utility model;
FIG. 2 is a cross-sectional view of a strip lens of the present utility model;
fig. 3 is a light path diagram after the light distribution of the strip lens of the present utility model.
Marking:
1. a lens body; 2. an incident light groove; 21. a first light incident surface; 211. a left curved surface; 212. a right side curved surface; 22. a second light incident surface; 23. a third light incident surface; 3. a light-emitting surface; 4. a left total reflection surface; 5. a right side total reflection surface; 6. a first positioning portion; 7. a second positioning portion; 71. a limit groove; 8. an LED light source.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
As shown in fig. 1, a strip lens with asymmetric light distribution comprises a strip lens body 1 with the same cross section, wherein an incident light groove 2 formed on the lens body 1 is arranged on the upper side of the lens body 1, the incident light groove 2 is concaved on the lens body 1 and extends along the lens body 1, and a light emergent surface 3 is arranged on the lower side of the lens body 1;
as shown in fig. 2, the inner wall of the incident light slot 2 includes a first light incident surface 21 at the bottom, where the first light incident surface 21 is an arc-shaped curved surface, the arc-shaped curved surface is divided into a left curved surface 211 and a right curved surface 212 along the middle, and the curvatures of the left curved surface 211 and the right curved surface 212 are different; the inner wall of the incident light groove 2 further comprises a second light incident surface 22 positioned on the left side wall, the second light incident surface 22 is connected with the left curved surface 211 at the bottom of the incident light groove 2, and comprises a third light incident surface 23 positioned on the right side wall, the third light incident surface 23 is connected with the right curved surface 212 at the bottom of the incident light groove 2, and the depth of the second light incident surface 22 is different from the depth of the third light incident surface 23;
the width of the upper end of the lens body 1 is smaller than that of the lower end of the lens body 1;
the lens further comprises total reflection surfaces arranged on the outer walls of the two sides of the lens body 1, the total reflection surfaces on the two sides extend and transition between the upper end and the lower end of the lens body 1, and the absolute values of slopes of the left total reflection surface 4 and the right total reflection surface 5 are different.
In this embodiment, as shown in fig. 3, the right side of the lens body 1 is a collimated light distribution structure, which includes the third light incident surface 23, a right curved surface 212, a right total reflection surface 5 and the right end of the light emergent surface 3, after the right light is emitted from the LED light source 8 opposite to the incident light slot 2, part of the light is emitted from the third light incident surface 23 into the lens body 1 to the right total reflection surface 5, reflected by the right total reflection surface 5, collimated and emitted from the light emergent surface 3, and the other part of the light is emitted from the right curved surface 212 into the lens body 1, and then collimated and emitted directly from the light emergent surface 3;
the left side of the lens body 1 is a converging light distribution structure, which comprises the second light incident surface 22, a left curved surface 211, a left total reflection surface 4 and the left end of the light emergent surface 3, after the left light is emitted from the LED light source 8, part of the light is emitted from the second light incident surface 22 into the lens body 1 to the left total reflection surface 4, reflected by the left total reflection surface 4, emitted from the light emergent surface 3 to the right, and the other part of the light is emitted from the left curved surface 211 into the lens body 1 and then emitted from the light emergent surface 3 to the right.
In the process that the total reflection surfaces on both sides of the lens body 1 extend from bottom to top, as shown in fig. 2, the absolute value of the slope of the left total reflection surface 4 is greater than that of the right total reflection surface 5, so as to ensure that the light reflected by the left total reflection surface 4 can exit from the left end of the light exit surface 3 to the right and converge below the light exit surface 3, and the light reflected by the right total reflection surface 5 can exit from the light exit surface 3 in a collimated manner.
Specifically, the depth of the second light incident surface 22 is greater than the depth of the third light incident surface 23.
Specifically, the curvature of the left curved surface 211 is smaller than the curvature of the right curved surface 212.
The different depths and curvatures are arranged such that the LED light source 8 emits portions the light rays can generate polarized light distribution effect after being reflected by the left total reflection surface.
Specifically, the LED light source 8 is an LED light bar.
Specifically, the included angle between the left curved surface 211 and the second light incident surface 22 is smaller than the included angle between the right curved surface 212 and the third light incident surface 23.
Specifically, the light-emitting surface 3 is a plane.
Specifically, a first positioning part 6 and a second positioning part 7 are also arranged on the left side and the right side of the lens body 1;
specifically, a limiting groove 71 connected with the bottom of the right total reflection surface 5 is arranged at the second positioning part 7; the first positioning part 6 and the second positioning part 7 are used for being in clamping connection with the lamp, so that the lens body 1 is fixed inside the lamp.
Variations and modifications to the above would be obvious to persons skilled in the art to which the utility model pertains from the foregoing description and teachings. Therefore, the utility model is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the utility model should be also included in the scope of the claims of the utility model. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present utility model in any way.
Claims (10)
1. The strip-shaped lens with the asymmetric light distribution comprises a strip-shaped lens body with the same section, wherein an incident light groove formed on the lens body is formed on the upper side of the lens body, the incident light groove is concaved on the lens body and extends along the lens body, and the lower side of the lens body is a light-emitting surface; it is characterized in that the method comprises the steps of,
the inner wall of the incident light groove comprises a first light incident surface positioned at the bottom, wherein the first light incident surface is an arc-shaped curved surface which is divided into a left curved surface and a right curved surface along the middle, and the curvatures of the left curved surface and the right curved surface are different; the inner wall of the incident light groove further comprises a second light incident surface positioned on the left side wall, the second light incident surface is connected with the left side curved surface at the bottom of the incident light groove, the inner wall of the incident light groove comprises a third light incident surface positioned on the right side wall, the third light incident surface is connected with the right side curved surface at the bottom of the incident light groove, and the depth of the second light incident surface is different from that of the third light incident surface;
the width of the upper end of the lens body is smaller than that of the lower end of the lens body;
the lens further comprises total reflection surfaces arranged on the outer walls of the two sides of the lens body, the total reflection surfaces on the two sides extend and transition between the upper end and the lower end of the lens body, and the absolute values of slopes of the left total reflection surface and the right total reflection surface are different.
2. The strip lens with asymmetric light distribution according to claim 1, wherein the right side of the lens body is a collimated light distribution structure, and the strip lens comprises a third light incident surface, a right curved surface, a right total reflection surface and a right end of the light emergent surface, wherein after the right light is emitted from an LED light source opposite to the incident light groove, part of light is emitted from the third light incident surface into the lens body to the right total reflection surface, reflected by the right total reflection surface and then collimated and emitted from the light emergent surface, and the other part of light is emitted from the right curved surface into the lens body and then collimated and emitted directly from the light emergent surface;
the left side of the lens body is a convergent light distribution structure, the convergent light distribution structure comprises a second light inlet surface, a left curved surface, a left total reflection surface and the left end of a light outlet surface, after left light rays are emitted from the LED light source, part of the light rays are emitted into the lens body from the second light inlet surface to the left total reflection surface, reflected by the left total reflection surface, emitted from the light outlet surface to the right, and the other part of the light rays are emitted from the light outlet surface to the right after being emitted into the lens body from the left curved surface.
3. The bar lens for asymmetric light distribution as claimed in claim 2, wherein the absolute value of the slope of the left side total reflection surface is larger than the absolute value of the slope of the right side total reflection surface in the process that the total reflection surfaces at both sides of the lens body extend from bottom to top.
4. The strip lens of claim 2, wherein the depth of the second light incident surface is greater than the depth of the third light incident surface.
5. The strip lens for asymmetrical light distribution as claimed in claim 2, wherein the curvature of the left side curved surface is smaller than the curvature of the right side curved surface.
6. The bar lens of claim 2, wherein the LED light source is an LED light bar.
7. The strip lens for asymmetric light distribution as claimed in claim 1, wherein an included angle between the left curved surface and the second light incident surface is smaller than an included angle between the right curved surface and the third light incident surface.
8. The bar lens for asymmetrical light distribution as claimed in claim 1, wherein the light exit surface is a plane.
9. The strip lens for asymmetric light distribution as claimed in claim 1, wherein a first positioning portion and a second positioning portion are further provided on both left and right sides of the lens body.
10. The strip lens of claim 9, wherein a limiting groove connected with the bottom of the right total reflection surface is arranged at the second positioning part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320111299.2U CN219367496U (en) | 2023-01-18 | 2023-01-18 | Strip lens of asymmetric grading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320111299.2U CN219367496U (en) | 2023-01-18 | 2023-01-18 | Strip lens of asymmetric grading |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219367496U true CN219367496U (en) | 2023-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320111299.2U Active CN219367496U (en) | 2023-01-18 | 2023-01-18 | Strip lens of asymmetric grading |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219367496U (en) |
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2023
- 2023-01-18 CN CN202320111299.2U patent/CN219367496U/en active Active
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