Polarizing optical system

Abstract

The polarized optical system sequentially comprises a light source, a polarized lens and a polarized element, wherein the polarized lens is used for downwards shifting incident light for the first time; the polarized element is used for downwards shifting the incident light for the second time; the polarizing lens comprises a first lens part located at the lower part and a second lens part located at the upper part, the wall thickness of the first lens part is uniform, the wall thickness of the second lens part is gradually reduced from bottom to top, the upper end of the first lens part is in butt joint with the lower end of the second lens part, and the polarizing element is arranged in front of the second lens part. The first lens part allows light rays at a downward angle to freely penetrate and does not deflect; the second lens part deflects the upward light for the first time, so that self-emitted light at an upward angle is deflected to a horizontal angle; the polarizing element deflects the emergent light of the second lens part for the second time and uniformly deflects downwards; overall irradiation light spots shift downwards and are uniform.

Description

Technical Field

[0001] This utility model relates to the field of optical technology, and in particular to a polarizing optical system. Background Technology

[0002] Vehicle lights refer to the lights on a vehicle. There are many types of work lights on vehicles, each with different functions, mainly including headlights and taillights. Vehicle work lights generally serve a lighting and signaling function. For example, the light emitted by headlights illuminates the road ahead, allowing drivers to drive safely at night. However, due to limitations in the beam angle of existing work lights, the light spot does not fully reach the ground, resulting in insufficient effective light spot area or brightness. To address the beam angle issue, some work light optical systems use polarizing lenses, but the polarization effect is not ideal, resulting in a narrow center of brightness for the light spot. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a polarizing optical system that solves the technical problems existing in the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a polarizing optical system, comprising, in sequence according to the light output direction, a light source, a polarizing lens that deflects the incident light rays downward for the first time, and a polarizing element that deflects the incident light rays downward for the second time; the polarizing lens includes a first lens portion located at the bottom and a second lens portion located at the top, the first lens portion having a uniform wall thickness, and the second lens portion having a wall thickness that gradually decreases from bottom to top, the upper end of the first lens portion being aligned with the lower end of the second lens portion, and the polarizing element being located in front of the second lens portion. The principle of this utility model is as follows: the first lens portion allows downward-angled light rays to pass freely without deflection; the second lens portion deflects upward-angled light rays for the first time, causing all upward-angled self-emitted light rays to be deflected to a horizontal angle; the polarizing element deflects the light rays emitted from the second lens portion for the second time, uniformly deflecting them downward.

[0005] As an improvement, the polarizing element includes an arc-shaped plate covering the front of the second lens section and a serrated pattern on the downward-facing surface of the arc-shaped plate.

[0006] As an improvement, the light source is an LED lamp bead, which is positioned between the first lens section and the second lens section.

[0007] The beneficial effects of this utility model compared with the prior art are:

[0008] The first lens section allows downward-angled light to pass freely without deflection; the second lens section deflects upward-angled light for the first time, causing all upward-angled self-emitted light to be deflected to a horizontal angle; the polarizing element deflects the light emitted from the second lens section for the second time, deflecting it downwards uniformly; the overall illumination spot is shifted downwards and is uniform. Attached Figure Description

[0009] Figure 1 This is a cross-sectional view of a polarizing optical system.

[0010] Figure 2 This is an exploded view of a polarizing optical system.

[0011] Figure 3 This is the optical path diagram of a polarizing optical system.

[0012] Figure 4 This is a diagram of the illumination spot of a polarizing optical system. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] like Figures 1 to 4 As shown, a polarizing optical system applicable to work lights includes, in sequence according to the light emission direction, a light source 1, a polarizing lens 2 that deflects the incident light downwards for the first time, and a polarizing element 3 that deflects the incident light downwards a second time. The polarizing lens 2 includes a first lens section 21 located at the bottom and a second lens section 22 located at the top. The first lens section 21 has a uniform wall thickness, allowing downward-angled light to pass freely without deflection. The wall thickness of the second lens section 22 gradually decreases from bottom to top. The upper end of the first lens section 21 is aligned with the lower end of the second lens section 22, and the second lens section 22 deflects upward-angled light for the first time, causing all upward-angled self-emissions to be deflected to a horizontal angle. The polarizing element 3 is located in front of the second lens section 22. The polarizing element 3 includes an arc-shaped plate covering the front of the second lens section 22 and a downward-facing serrated pattern on the surface of the arc-shaped plate. The polarizing element 3 deflects the emitted light from the second lens section 22 a second time, uniformly deflecting it downwards. The light source 1 is an LED lamp bead, which is located between the first lens section 21 and the second lens section 22.

Claims

1. A polarizing optical system, characterized in that: The light source, polarizing lens that deflects the incident light downwards for the first time, and polarizing element that deflects the incident light downwards for the second time are arranged in sequence according to the light emission direction. The polarizing lens includes a first lens part located at the bottom and a second lens part located at the top. The wall thickness of the first lens part is uniform, and the wall thickness of the second lens part gradually decreases from bottom to top. The upper end of the first lens part is connected to the lower end of the second lens part, and the polarizing element is located in front of the second lens part.

2. The polarizing optical system according to claim 1, characterized in that: The polarizing element includes an arc-shaped plate covering the front of the second lens section and a serrated pattern on the downward-facing surface of the arc-shaped plate.

3. The polarizing optical system according to claim 1, characterized in that: The light source is an LED lamp bead, which is positioned between the first lens section and the second lens section.

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