Gradient microstructure optical lens adaptive to simulated outdoor environment

Abstract

The utility model discloses a gradient microstructure optical lens adapted to a simulated outdoor environment, which comprises a substrate and a microstructure layer, the microstructure layer comprises a lower high-density area, a middle transition area and an upper low-density area, the microstructure layer is provided with a plurality of uniformly distributed microstructures, and the microstructures are arranged on the substrate. The density of the microstructures is gradually reduced from the lower part to the upper part along the vertical direction of the lens, and the gradient change range of the density of the microstructures is that 2-5 microstructures are reduced per millimeter. According to the gradient microstructure optical lens adaptive to the simulated outdoor environment, targeted anti-dazzle is achieved, and the dense microstructures on the lower portion effectively restrain ground reflection light which accounts for more than 60% of an outdoor dazzle source; visual field definition optimization: the upper sparse arrangement reduces interference to a long-distance visual field; and ergonomic adaptation: the visual behavior characteristic that the downward watching proportion of human eyes is 70% during outdoor activities is met.

Description

Technical Field

[0001] This utility model relates to the field of optical lens technology, and in particular to a gradient microstructure optical lens adapted to simulate outdoor environments. Background Technology

[0002] Existing lens surface microstructures, such as anti-glare structures, mostly employ uniform arrangement or fixed partition design, which have the following drawbacks:

[0003] Insufficient light adaptability: Evenly distributed light cannot effectively cope with light from different directions in outdoor environments, such as ground reflection light and low-angle glare;

[0004] Poor human-machine adaptability: It does not take into account the natural changes in the direction of human vision when outdoors, such as the higher frequency of looking downwards when walking;

[0005] Functional limitations: Existing lenses cannot simultaneously achieve both anti-glare and visual clarity. Summary of the Invention

[0006] To address the aforementioned shortcomings in existing technologies, this invention provides a gradient microstructure optical lens that simulates outdoor environments. Through a dense microstructure distribution at the bottom and a sparse microstructure distribution at the top, it adapts to the characteristics of high ground reflection intensity and high frequency of downward gaze in outdoor environments, thereby improving anti-glare performance and visual comfort.

[0007] To achieve the aforementioned objectives, the technical solution adopted by this utility model is as follows:

[0008] A gradient microstructure optical lens adapted to simulate outdoor environments includes a substrate and a microstructure layer. The microstructure layer includes a lower high-density region, a middle transition region, and an upper low-density region. The microstructure layer has a number of uniformly distributed microstructures. The density of the microstructures gradually decreases from the bottom to the top along the vertical direction of the lens. The microstructure density gradient range is 2-5 microstructures per millimeter.

[0009] Furthermore, the microstructure density of the lower high-density region is 200-400 structures / cm², and the microstructure density of the upper low-density region is 50-150 structures / cm².

[0010] Furthermore, the microstructure is prismatic, with a height of 10-30 μm and a base width of 20-50 μm.

[0011] Furthermore, the long axis of the microstructure in the lower high-density region forms an angle of 15-30° with the horizontal plane.

[0012] Furthermore, the microstructure layer is vertically divided into a lower high-density region, a middle transition region, and an upper low-density region, with the ratios of the lower high-density region, the middle transition region, and the upper low-density region being 40%, 20%, and 40%, respectively.

[0013] Furthermore, the substrate is made of CR-39 resin with a thickness of 2.0 mm and a radius of curvature of 100 mm.

[0014] The beneficial effects of this utility model are as follows:

[0015] Targeted anti-glare: The dense microstructure at the bottom effectively suppresses ground-reflected light, accounting for more than 60% of outdoor glare sources;

[0016] Optimized field of view clarity: The sparse arrangement at the top reduces interference with the field of view at long distances;

[0017] Human-computer interaction adaptation: It conforms to the visual behavior characteristic of human eyes looking downwards 70% of the time during outdoor activities. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the substrate and microstructure layer structure of this utility model;

[0019] Figure 2 This is a top view schematic diagram of the microstructure gradient arrangement of this utility model;

[0020] Figure 3 This is a schematic diagram of the prism-shaped microstructure of this utility model.

[0021] Reference table for attached figures:

[0022] 1. Substrate; 2. Microstructure layer; 3. Lower high-density region; 4. Upper low-density region; 5. Middle transition region; 6. Microstructure. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0024] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0025] To make the content of this utility model easier to understand, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0026] like Figures 1 to 3As shown, a gradient microstructure optical lens adapted to simulate outdoor environments is proposed for the first time, which proposes an arrangement scheme in which the density of the microstructure 6 varies with a gradient along the vertical direction; the directional deflection of ground reflected light is achieved through the tilting design of the microstructure direction.

[0027] Gradient microstructure optical lens adapted to simulate outdoor environment: including substrate 1 and microstructure layer 2. Substrate 1 is made of CR-39 resin with a thickness of 2.0 mm and a radius of curvature of 100 mm.

[0028] The microstructure layer 2 includes a lower high-density region 3, a middle transition region 5, and an upper low-density region 4. Several uniformly distributed microstructures 6 are provided on the microstructure layer 2.

[0029] Microstructure 6 fabrication: Using nanoimprinting technology, a prism structure with a density of 350 structures / cm² is formed in the lower high-density region 3, with a height of 25μm, a width of 40μm, and a major axis at an angle of 25° to the horizontal plane.

[0030] The density of microstructures 6 in the upper low-density region 4 is 125 per cm².

[0031] The zoning percentage parameters were determined based on big data analysis of human outdoor visual behavior. The percentages of the lower high-density zone 3, the middle transition zone 5, and the upper low-density zone 4 were 40%, 20%, and 40%, respectively.

[0032] In a simulated outdoor environment with a ground-reflected light intensity of 2000 lux, the glare reduction rate is 45% higher than that of uniformly arranged lenses.

[0033] The light transmittance of the lower field of view is maintained at ≥85%, and the light transmittance of the upper field of view is maintained at ≥92%.

[0034] This invention discloses a gradient microstructure optical lens adapted to simulate outdoor environments. By setting high-density, tilted prismatic microstructures in the lower high-density area 3, ground reflection interference is effectively suppressed, while a low-density arrangement in the upper low-density area 4 maintains clarity in the distance field of view. This design conforms to the visual behavior characteristics of the human eye outdoors and combines anti-glare with high light transmittance.

[0035] The above description is merely a preferred embodiment of this utility model patent and is not intended to limit this utility model patent. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model patent should be included within the protection scope of this utility model patent.

Claims

1. A gradient microstructured optical lens adapted to mimic an outdoor environment, characterized in that, The application relates to a lens, which comprises a substrate (1) and a microstructure layer (2), wherein the microstructure layer (2) comprises a lower high-density area (3), a middle transition area (5) and an upper low-density area (4), a plurality of microstructures (6) are uniformly distributed on the microstructure layer (2), the density of the microstructures (6) gradually decreases from the lower part to the upper part along the vertical direction of the lens, and the density gradient change range of the microstructures (6) is 2-5 microstructures (6) per millimeter.

2. The gradient microstructured optical lens of claim 1, wherein: The density of the microstructures (6) in the lower high-density area (3) is 200-400 / cm2, and the density of the microstructures (6) in the upper low-density area (4) is 50-150 / cm2.

3. The gradient microstructured optical lens of claim 2, wherein: The microstructures (6) are prismatic, the height is 10-30 mu m, and the bottom width is 20-50 mu m.

4. The gradient microstructured optical lens of claim 3, wherein: The long axis direction of the microstructures (6) in the lower high-density area (3) forms an angle of 15-30 DEG with the horizontal plane.

5. The gradient microstructured optical lens of claim 4, wherein: The microstructure layer (2) is divided into the lower high-density area (3), the middle transition area (5) and the upper low-density area (4) in the vertical direction, and the proportion of the lower high-density area (3), the middle transition area (5) and the upper low-density area (4) is 40%, 20% and 40% respectively.

6. The gradient microstructured optical lens of claim 1, wherein: The substrate (1) is made of CR-39 resin, the thickness is 2.0 mm, and the curvature radius is 100 mm.

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