A polarizing lens for a lighting fixture

Abstract

The present invention discloses a polarizing lens for a lamp, which includes a lens body and a light-emitting surface provided on the lens body. It is characterized in that: a plurality of polarizing holes are provided on the lens body, and the light emitted by the light source is deflected by the polarizing holes and then emitted through the light-emitting surface. The present invention adopts the structure in which a plurality of polarizing holes are provided on the lens body, and the light emitted by the light source is deflected by the polarizing holes and then emitted through the light-emitting surface. This not only reduces the weight and volume of the lens, but also can adjust the through holes to achieve polarization at various angles, thus eliminating the need to add multiple layers of lenses to achieve polarization.

Description

Technical Field

[0001] The present invention relates to a lamp, in particular to a polarizing lens for an automotive rear fog lamp. Background Art

[0002] The light emitted by an automotive rear fog lamp bulb needs to be polarized to achieve a large-range illumination. Previously, a multi-layer lens stacking method was used, which not only had a large volume and heavy weight, but also had a high cost. Therefore, the applicant designed a polarizing lens for an automotive rear fog lamp (of course, this polarizing lens can also be used for lamps in homes, offices, etc.), which can achieve a large-range polarized illumination without adding multi-layer lenses. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a polarizing lens for a lamp.

[0004] The technical solution adopted by the present invention to solve its technical problems is:

[0005] A polarizing lens for a lamp, comprising a lens body and a light-emitting surface provided on the lens body, characterized in that: a plurality of polarizing holes are provided on the lens body, and the light emitted by the light source is deflected by the polarizing holes and then emitted through the light-emitting surface.

[0006] Mounting holes are provided on the lens body, and the light source is located in the mounting holes.

[0007] The polarizing holes are through holes.

[0008] The polarizing holes include primary polarizing holes and secondary polarizing holes, and the light is deflected by the primary polarizing holes and the secondary polarizing holes and then emitted through the light-emitting surface.

[0009] The secondary polarizing holes include two oppositely arranged side holes and a middle hole located between the two side holes.

[0010] The primary polarizing holes include a first polarizing surface arranged oppositely and a second polarizing surface arranged oppositely, and the light is deflected by the first polarizing surface and the second polarizing surface and then enters the secondary polarizing holes.

[0011] The side holes include a side hole reflecting surface, a first side hole polarizing surface and a second side hole polarizing surface. The light entering the side holes is deflected by the first side hole polarizing surface and the second side hole polarizing surface and then emitted through the light-emitting surface, and the light incident on the side hole reflecting surface can be reflected into the middle hole.

[0012] Both of the first polarizing surfaces are flat and the two first polarizing surfaces intersect to form an angle A, and the second polarizing surface is an arc surface.

[0013] The first side hole polarizing surface and the side hole reflecting surface are both flat and the side hole reflecting surface is vertical, the first side hole polarizing surface is perpendicular to the side hole reflecting surface, and the second side hole polarizing surface is an arc surface.

[0014] The beneficial effects of the present invention are as follows: The present invention adopts a structure in which a plurality of polarization holes are provided on the lens body, and the light emitted by the light source is deflected by the polarization holes and then emitted through the light-emitting surface. This not only reduces the weight and volume of the lens, but also can adjust the through holes to achieve polarization at various angles, thus eliminating the need to add multiple layers of lenses to achieve polarization. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the drawings and embodiments.

[0016] Figure 1 is a three-dimensional view of the present invention;

[0017] Figure 2 is a schematic optical path diagram of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Referring to Figure 1 and Figure 2 , the present invention discloses a polarization lens for a lamp, including a lens body 1 and a light-emitting surface 2 provided on the lens body 1. A plurality of polarization holes are provided on the lens body 1. The polarization holes in this application are all through holes, which is convenient for manufacturing and processing. The light emitted by the light source is deflected by the polarization holes and then emitted through the light-emitting surface 2. An installation hole is provided on the lens body 1, and the light source is located in the installation hole. The light source is an LED lamp bead.

[0019] As shown in the figure, the polarization holes include a primary polarization hole 3 and a secondary polarization hole. The light is deflected by the primary polarization hole 3 and the secondary polarization hole and then emitted through the light-emitting surface 2. Through the secondary polarization, a greater polarization effect can be obtained on the basis of a compact structure, realizing large-range illumination. The secondary polarization hole includes two relatively arranged side holes 4 and a middle hole 5 located between the two side holes 4. The middle hole 5 is located directly below the primary polarization hole 3. Through the above structure, not only large-range illumination is realized, but also the light irradiation uniformity effect is good. The specific principle is as follows: The primary polarization hole 3 performs the first polarization, refracting the central light to both sides, deflecting the LED central light by 30° - 80°; the side hole 4 performs the second polarization, mainly deflecting the light on both sides to the maximum extent to both sides, realizing a large-angle deviation of the light, deflecting to 10° - 90°; the middle hole 5 performs the second polarization, mainly filtering the central light again and deflecting it to both sides, realizing a large-angle deviation, and deflecting a part of the light passing through the middle hole 5 to 80° - 140°.

[0020] As shown in the figure, the primary polarization aperture 3 includes a first polarization surface 31 arranged oppositely and a second polarization surface 32 arranged oppositely. The light enters the secondary polarization aperture after being deflected by the first polarization surface 31 and the second polarization surface 32. The function of the first polarization surface 31 is to deflect the light, and the function of the second polarization surface 32 is to diffuse the light. Both of the first polarization surfaces 31 are flat surfaces, and the two first polarization surfaces 31 intersect to form an angle A. The range of the angle A can be: 150° - 170°. The angle of A is preferably 160°. The smaller the angle, the larger the deflection angle. The second polarization surface 32 is an arc surface. The smaller the R value, the larger the light deflection angle. The R value cannot be infinitely small because the smaller the R value, the smaller the via area and the lower the diffusion efficiency. Therefore, the radius R of the arc surface is preferably 8 mm. Thus, combined with the above angle A, the uniformity of the deflected light can be adjusted. And the hole shape of the middle hole 5 is the same as that of the primary polarization aperture 3, only the R value is different. The R value of the arc polarization surface of the middle hole 5 is preferably 2.8 mm.

[0021] As shown in the figure, the side hole 4 includes a side hole reflecting surface 41, a first side hole polarization surface 42, and a second side hole polarization surface 43. The light entering the side hole 4 is deflected by the first side hole polarization surface 42 and the second side hole polarization surface 43 and then exits through the light-emitting surface 2, and the light incident on the side hole reflecting surface 41 can be reflected into the middle hole 5. The first side hole polarization surface 42 is a flat surface and the angle with the vertical surface is B. The range of the angle B can be: 75° - 85°. The angle of A is preferably 80°. The smaller the angle, the larger the deflection angle. The second side hole polarization surface 43 is an arc surface. The smaller the R value, the larger the light deflection angle. The R value cannot be infinitely small because the smaller the R value, the smaller the via area and the lower the diffusion efficiency. Therefore, the radius R of the arc surface is preferably 4 mm. Thus, combined with the above angle A, the uniformity of the deflected light can be adjusted. The side hole reflecting surface 41 can refract the light to the middle to ensure the middle brightness, thereby playing a role in adjusting the light uniformity.

[0022] In summary, through the combined action of the primary polarization aperture 3, the side hole 4, and the middle hole 5, uniform light distribution and light supplement at any angle can be achieved; through the left and right arc surfaces of the side hole 4 or the middle hole 5 respectively, asymmetric light emission can be achieved.

[0023] The above has introduced in detail a polarization lens for a lamp provided by an embodiment of the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A polarizing lens for a lamp, comprising a lens body and a light-emitting surface provided on the lens body, characterized in that: A plurality of polarization holes are provided on the lens body, and the light emitted by the light source is deflected by the polarization holes and then emitted through the light-emitting surface. The polarization holes include a primary polarization hole and a secondary polarization hole. The light is deflected by the primary polarization hole and the secondary polarization hole and then emitted through the light-emitting surface. The secondary polarization hole includes two oppositely arranged side holes and a middle hole located between the two side holes. The primary polarization hole includes a polarization surface one and a polarization surface two that are oppositely arranged. The light is deflected by the polarization surface one and the polarization surface two and then enters the secondary polarization hole. The side hole includes a side hole reflecting surface, a side hole polarization surface one, and a side hole polarization surface two. The light entering the side hole is deflected by the side hole polarization surface one and the side hole polarization surface two and then emitted through the light-emitting surface, and the light incident on the side hole reflecting surface can be reflected into the middle hole.

2. The polarizing lens for a lamp according to claim 1, characterized in that: An installation hole is provided on the lens body, and the light source is located in the installation hole.

3. The polarizing lens for a lamp according to claim 1, wherein: The polarization hole is a through hole.

4. A polarizing lens for a lamp according to claim 1, characterized in that: Both of the polarization surfaces one are flat surfaces, and the included angle formed by the intersection of the two polarization surfaces one is A, and the polarization surface two is an arc surface.

5. A polarizing lens for a lamp according to claim 1, characterized in that: Both the side hole polarization surface one and the side hole reflecting surface are flat surfaces and the side hole reflecting surface is vertical. The side hole polarization surface one is perpendicular to the side hole reflecting surface, and the side hole polarization surface two is an arc surface.

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