Lens of non-fixed defocusing amount aspheric micro lens design

Abstract

The utility model relates to the technical field of lenses, in particular to a lens with a non-fixed defocusing amount aspheric micro-lens design, which comprises a lens body, the lens body is of a circular structure, a plurality of micro-lenses are distributed on the front surface of the lens body, an annular convex edge is arranged outside the lens body, and the lens body is provided with a plurality of micro-lenses. A plurality of mounting holes penetrating through the interior of the annular convex edge are distributed in the annular convex edge, a plurality of mounting grooves are formed in the outer ring wall of the annular convex edge, and two mounting grooves are symmetrically distributed in the two sides of any mounting hole. According to the scheme, the microstructures are additionally arranged on the periphery of the lens, so that the lens presents a non-periodic complex form, the design not only increases optical disturbance of images around the retina and makes the retina difficult to capture and filter, but also continuously plays a myopia control role, and the problem that a traditional out-of-focus lens is simple in microstructure and periodically distributed to cause optical drug resistance is solved; the lens adopts a multi-layer composite structure, so that the mechanical strength of the lens is enhanced, and abrasion, collision and oil pollution in daily use can be resisted.

Description

Technical Field

[0001] This utility model relates to the field of lens technology, and in particular to a lens with a non-fixed defocus aspherical microlens design. Background Technology

[0002] Aspherical microlenses with non-fixed defocus are advanced optical lenses with unique design and performance characteristics. These lenses are commonly used in high-precision optical systems such as microscopes, telescopes, and camera lenses to improve image quality and optical performance.

[0003] Non-fixed defocus: Defocus refers to the distance between the focal point formed after light passes through the lens and the ideal focal point. Non-fixed defocus means that the lens has different defocus in different positions or under different conditions.

[0004] Aspherical design: Aspherical lenses are lenses whose surface curvature is not a simple sphere. Aspherical design can effectively reduce aberrations produced by spherical lenses, such as spherical aberration, coma, and distortion.

[0005] Currently, most defocus lenses have relatively simple microstructures, relying on only a small number of micro-dot structures for design. In addition, these lenses are mostly clamped and fastened to the frame, which makes them prone to detachment after prolonged use, resulting in damage from drops and impacts. Furthermore, most lenses lack protective structures, significantly reducing their lifespan. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a non-fixed defocus aspherical microlens design.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] Design a lens with a non-fixed defocus aspherical microlens design, including a lens body, the lens body having a circular structure, a number of microlenses distributed on the front of the lens body, an annular convex edge on the outside of the lens body, a number of mounting holes distributed on the annular convex edge, a number of mounting grooves opened on the outer wall of the annular convex edge, and two mounting grooves symmetrically distributed on both sides of any mounting hole.

[0009] The microlenses are arranged in a ring around the center of the lens body and diffused along the center of the lens body. There are 943 microlenses, each with a diameter of 1.14 mm. The innermost microlens has a diameter of 10.1 mm, and the spacing between adjacent inner and outer rings of microlenses is 2.54 mm.

[0010] Dynamic optical control is achieved through 943 precisely arranged microlenses. The microlenses are distributed in a ring array, spreading outward from the center, with adjacent layers spaced 2.54 mm apart, forming a gradient defocus effect. This design optimizes the optical path through an aspherical structure, allowing the defocus amount in different areas to change dynamically, thereby adapting to complex optical needs (such as myopia control or image correction).

[0011] The lens body consists of a protective layer, a base layer, a buffer layer, and an oil-resistant layer. The protective layer is coated on one side of the base layer, and the buffer layer is bonded to the other side of the base layer with resin adhesive. The oil-resistant layer is coated on the other side of the buffer layer. The high refractive index of the protective layer (titanium dioxide coating) reduces light reflection and increases light transmittance. The abrasion resistance of the base layer (acrylic resin) ensures the stability of the optical surface. The diameter (1.14 mm) and distribution density (innermost diameter 10.1 mm) of the microlenses are calculated to ensure that light undergoes controllable scattering or focusing when passing through the lens, balancing aberrations between the central and peripheral fields of view. Simultaneously, the buffer layer (polycarbonate film) absorbs external impact forces, preventing deformation of the microlens structure due to mechanical stress and maintaining the accuracy of defocusing.

[0012] In detail, the thickness of the lens body is twice the thickness of the annular convex edge.

[0013] In detail, the inner wall of the mounting hole and the interior of the mounting groove are both smooth or threaded surfaces.

[0014] In detail, the protective layer is made of titanium dioxide coating material.

[0015] In detail, the base layer is made of acrylic resin material.

[0016] In detail, the buffer layer is made of polycarbonate film material.

[0017] In detail, the oil-resistant layer is made of a silica coating material.

[0018] The design scheme proposed in this utility model has the following beneficial effects in application:

[0019] 1. This solution adds microstructures around the lens to make it present a non-periodic complex shape. This design not only increases the optical disturbance of the image around the retina, making it difficult for the retina to capture and filter, but also continuously plays a role in myopia control, breaking the problem of optical resistance caused by the simple and periodic distribution of microstructures in traditional defocus lenses.

[0020] 2. As described in 1, the lens adopts a multi-layer composite structure, including a titanium dioxide protective layer (anti-reflective), an acrylic resin base layer (shatterproof), a polycarbonate buffer layer (impact resistant), and a silica anti-oil layer (easy to clean). This layered design not only enhances the mechanical strength of the lens, but also resists wear, collisions, and oil contamination during daily use. In addition, the mounting holes and mounting grooves on the annular convex edge, together with the screws, ensure the stability of the lens installation and avoid the loosening or displacement that may be caused by traditional clamping methods. It is especially suitable for long-term use in vibration environments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a side view of the present invention.

[0023] Figure 3 This is an enlarged schematic diagram of point A in this utility model;

[0024] Figure 4 This is a schematic diagram of the lens body assembly of this utility model.

[0025] In the diagram: 1. Lens body; 11. Microlens; 12. Annular convex edge; 13. Mounting hole; 14. Mounting groove; 1001. Protective layer; 1002. Base layer; 1003. Buffer layer; 1004. Oil-proof layer. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Reference Figures 1-4 A lens with a non-fixed defocus aspherical microlens design includes a lens body 1, which is circular in structure. Several microlenses 11 are distributed on the front side of the lens body 1. An annular convex edge 12 is provided on the outside of the lens body 1. Several mounting holes 13 are distributed on the annular convex edge 12, and several mounting grooves 14 are provided on the outer wall of the annular convex edge 12. Two mounting grooves 14 are symmetrically distributed on both sides of any mounting hole 13.

[0028] Microlenses 11 are arranged in a ring around the center of the lens body 1 and diffused along the center of the lens body 1. There are 943 microlenses 11. The diameter of a single microlens 11 is 1.14 mm. The diameter of the microlenses 11 in the innermost ring is 10.1 mm. The spacing between adjacent inner and outer rings of microlenses 11 is 2.54 mm.

[0029] The lens body 1 consists of a protective layer 1001, a base layer 1002, a buffer layer 1003, and an oil-proof layer 1004. The protective layer 1001 is coated on one side of the base layer 1002, and the buffer layer 1003 is bonded to the other side of the base layer 1002 with resin adhesive. The oil-proof layer 1004 is coated on the other side of the buffer layer 1003.

[0030] It should be further noted that the thickness of the lens body 1 is twice the thickness of the annular convex edge 12.

[0031] It should be further noted that the inner wall of the mounting hole 13 and the interior of the mounting groove 14 are both smooth or threaded surfaces, which facilitates the fixing of the lens body 1 with screws during installation, making it more secure than non-screw-based installation methods such as ordinary clamping.

[0032] It should be further noted that the protective layer 1001 is made of titanium dioxide coating material, which has a high refractive index and enhances the anti-reflective ability of the lens.

[0033] It should be further noted that the base layer 1002 is made of acrylic resin material, which has good anti-crack and wear resistance.

[0034] It should be further noted that the buffer layer 1003 is made of polycarbonate film material, which can provide a buffer protection effect for the lens body 1 when it is slightly impacted.

[0035] It should be further noted that the anti-oil coating 1004 is made of silica coating material, which can reduce the adhesion of oil and dirt to the inner layer of the lens body 1 when used facing outwards, and is also easy to clean.

[0036] Operating Method: This solution achieves dynamic optical control through a precisely arranged array of 943 microlenses. The microlenses are distributed in a ring array, spreading outwards from the center, with adjacent layers spaced 2.54 mm apart, creating a gradient defocus effect. This design optimizes the optical path through an aspherical structure, allowing the defocus amount in different areas to dynamically change, thus adapting to complex optical needs (such as myopia control or image correction). The high refractive index of the protective layer 1001 (titanium dioxide coating) reduces light reflection and increases light transmittance. The abrasion resistance of the base layer 1002 (acrylic resin) ensures the stability of the optical surface. The diameter (1.14 mm) and distribution density (innermost circle diameter 10.1 mm) of the microlenses 11 are calculated to ensure controllable scattering or focusing of light as it passes through the lenses, balancing aberrations between the central and peripheral fields of view. Simultaneously, the buffer layer 1003 (polycarbonate film) absorbs external impact forces, preventing deformation of the microlens structure due to mechanical stress and maintaining the accuracy of the defocus amount.

[0037] The lens body 1 in this design achieves physical stability and long-term protection through a composite layered structure and mechanical fixing design. The mounting holes 13 (smooth or threaded) on the annular convex edge are fixed with the mounting grooves 14 by screws, ensuring that the lens body 1 is firmly installed in the equipment and avoiding displacement that affects optical performance. The thickness of the lens body 1 is twice that of the convex edge, which not only ensures the load-bearing strength of the microlens 11 array, but also reduces the adhesion of stains through the oleophobic properties of the anti-oil layer 1004 (silica coating). The multi-layer materials work together: the protective layer 1001 resists environmental ultraviolet rays, the base layer provides rigid support, the buffer layer absorbs vibration energy, and the anti-oil layer 1004 simplifies cleaning and maintenance. This design is especially suitable for optical equipment (such as cameras or medical instruments) that are exposed to complex environments for a long time. The mounting grooves 14 of its annular convex edge 12 are distributed (two grooves symmetrically on both sides of each hole) to further disperse the stress at the fixing point and prevent optical axis displacement caused by screw loosening, thereby maintaining the long-term accurate operation of the aspherical microlens.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lens with a non-fixed defocus aspherical microlens design, comprising a lens body (1), characterized in that: The lens body (1) has a circular structure. Several microlenses (11) are distributed on the front of the lens body (1). An annular convex edge (12) is provided on the outside of the lens body (1). Several mounting holes (13) are distributed on the annular convex edge (12) and penetrate its interior. Several mounting grooves (14) are opened on the outer ring wall of the annular convex edge (12). Two mounting grooves (14) are symmetrically distributed on both sides of any mounting hole (13). The microlenses (11) are arranged in a ring around the center of the lens body (1) and diffused around the center of the lens body (1). There are 943 microlenses (11). The diameter of a single microlens (11) is 1.14 mm. The diameter of the microlens (11) in the innermost ring is 10.1 mm. The spacing between adjacent microlenses (11) in the inner and outer rings is 2.54 mm. The lens body (1) consists of a protective layer (1001), a base layer (1002), a buffer layer (1003), and an oil-proof layer (1004) in sequence. The base layer (1002) is coated with the protective layer (1001) on one side, and the buffer layer (1003) is bonded to the other side of the base layer (1002) with resin adhesive. The buffer layer (1004) is coated on the other side of the buffer layer (1003).

2. The lens with a non-fixed defocus aspherical microlens design according to claim 1, characterized in that: The thickness of the lens body (1) is twice the thickness of the annular convex edge (12).

3. The lens with a non-fixed defocus aspherical microlens design according to claim 1, characterized in that: The inner wall of the mounting hole (13) and the interior of the mounting groove (14) are both smooth or threaded.

4. The lens with a non-fixed defocus aspherical microlens design according to claim 1, characterized in that: The protective layer (1001) is made of titanium dioxide coating material.

5. The lens with a non-fixed defocus amount aspherical microlens design according to claim 1, characterized in that: The base layer (1002) is made of acrylic resin material.

6. The lens with a non-fixed defocus aspherical microlens design according to claim 1, characterized in that: The buffer layer (1003) is made of polycarbonate film material.

7. The lens with a non-fixed defocus aspherical microlens design according to claim 1, characterized in that: The oil-resistant layer (1004) is made of a silica coating material.

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