Array-shaped microstructure and lens
By arranging a needle hair-like convex structure with low reflectivity on the lens and the pressing ring surface of the optical lens, the lens matte problem is solved, high image quality and matte removal are achieved, and the lens assembly glue matte is reduced.
Patent Information
- Application Number
- CN202420976260.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-08
AI Technical Summary
Inadequate light, halo, insufficient contrast or overexposed problems caused by misty light phenomena during photography or imaging, existing optical lenses affect the quality of the picture. The existing technology is difficult to meet the needs of high image quality and eliminate misty light.
Design an array-like microstructure, including n-needle hair-like protrusions, arranged on the surface of the lens lens, press ring and other components, using its low reflectivity material and specific shapes and angles, combined with adhesives and the fixing method of holding the gasket, forming needle hair-like bulges to reduce mist.
By standardizing the scattering direction, the surface reflection is reduced, stray light problems are significantly improved, high image quality requirements are met, and the miscellaneous light generated by lens assembly glue is reduced.
Smart Images
Figure CN222259614U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of optical lenses, and in particular to an array-shaped microstructure and a lens. Background Art
[0002] As competition in the mobile phone industry becomes increasingly fierce, mobile phone manufacturers are doing everything they can to win the favor of consumers. Mobile phone imaging is a major selling point of mobile phone products, and the requirements of major mobile phone consumer terminals for mobile phone camera products are constantly increasing, and the quality performance is constantly developing in the direction of specialization.
[0003] The evaluation of optical imaging lenses is usually multi-dimensional and comprehensive. During the process of photography or videography, a light and shadow phenomenon caused by the reflection, refraction or scattering of light on the lens surface is called stray light. Lens stray light may cause problems such as light spots, halos, lack of contrast or overexposure in photos or videos, affecting the image quality. Usually, stray light can be eliminated through lens internal component process processing, chip algorithm compensation, external lens hood, etc. However, the existing technical solutions can no longer meet the needs, and it is necessary to design a micro-structure that can meet the use requirements and has a good extinction effect.
[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content
[0005] The present application aims to provide an array-like microstructure and lens that can meet the requirements of manufacturers and customers for "high image quality" and "eliminating stray light". At the same time, when the lens, pressure ring and other components of the lens are coordinated and arranged to meet certain conditions, the stray light generated by the lens assembly glue can be significantly reduced.
[0006] The present application provides an array-like microstructure, which includes: n needle-like protrusions, n≥2; the needle-like protrusions are arranged in an array on a surface; the needle-like protrusions are made of a material that is not easy to break, and the reflectivity R of the material satisfies: 0.5%≤R≤20%.
[0007] According to one embodiment of the present application, the needle-like protrusion is a cylinder or a truncated cone with a gradually tapered tip.
[0008] According to one embodiment of the present application, when the needle-hair-like protrusion is a cylinder, the cross-sectional diameter a of the needle-hair-like protrusion and the length b of the needle-hair-like protrusion satisfy: 3
[0009] According to one embodiment of the present application, when the needle-hair-like protrusion is a truncated cone with a gradually tapered tip, the lateral tip inclination angle c of the needle-hair-like protrusion satisfies: 75°≤c≤95°.
[0010] According to one embodiment of the present application, an angle d between the needle-like protrusion and the surface satisfies: 30°≤d≤90°.
[0011] According to one embodiment of the present application, the needle-hair-like protrusions are fixedly connected to the surface via an adhesive.
[0012] According to one embodiment of the present application, a retaining gasket is further included, through which the needle-hair-like protrusions are locked to the surface.
[0013] According to one embodiment of the present application, the ends of at least two of the needle-like protrusions are fused to form a needle-like protrusion cluster, and the needle-like protrusion cluster array is distributed on the surface.
[0014] According to one embodiment of the present application, the cluster of needle-hair-like protrusions is formed by fusing long needle-hair protrusions and short needle-hair-like protrusions, or by fusing needle-hair-like protrusions of the same length.
[0015] The present application also provides a lens, comprising the array-shaped microstructure as described above, wherein the array-shaped microstructure is attached to the surface of at least one of the lens barrel, lens, spacer, pressure ring and shading element of the lens.
[0016] According to one embodiment of the present application, when the array-shaped microstructure is disposed on the surface of the pressure ring, it is used to shield stray light from the lens assembly glue.
[0017] Beneficial effects of this application:
[0018] Through the array-like microstructure of the present application, the scattering direction of the attached surface can be standardized, thereby achieving the purpose of reducing surface reflection and improving stray light, meeting the requirements of manufacturers and customers for "high image quality" and "eliminating stray light"; at the same time, when the lens, pressure ring and other components of the lens are coordinated and arranged to meet certain conditions, the stray light generated by the lens assembly glue can be significantly reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0020] Figure 1 A schematic diagram of an array-shaped microstructure provided in an embodiment of the present application;
[0021] Figure 2 A schematic longitudinal cross-sectional view of an array-shaped microstructure provided in an embodiment of the present application;
[0022] Figure 3 A schematic diagram of the principle of suppressing stray light with an array of needle hair structures provided in an embodiment of the present application;
[0023] Figure 4 A schematic diagram of the principle of suppressing stray light with an array of needle hair structures provided in an embodiment of the present application;
[0024] Figure 5 A schematic diagram of the principle of suppressing stray light with an array of needle hair structures provided in an embodiment of the present application;
[0025] Figure 6 A schematic diagram of a method for fixing needle hair provided in an embodiment of the present application;
[0026] Figure 7 A schematic diagram of tufted long guard hair and short guard hair provided in an embodiment of the present application;
[0027] Figure 8 A schematic diagram of the imaging lens structure provided in an embodiment of the present application;
[0028] Fig. 9 This is a schematic diagram of the pin hairs of the pressure ring blocking stray light at the glue position provided in an embodiment of the present application. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0030] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.
[0031] It should also be understood that the terms "comprises", "including", "having", "includes" and / or "comprising", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.
[0032] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.
[0033] In the description of this application, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region. If the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the first surface of the lens, and the surface of each lens closest to the imaging surface is called the second surface of the lens.
[0034] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal way unless explicitly defined in this article.
[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The features, principles and other aspects of the present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0036] Exemplary Embodiments
[0037] The array-shaped microstructure of the exemplary embodiment of the present application comprises: n needle-hair-shaped protrusions arranged in an array on a surface, wherein all needle-hair-shaped protrusions are made of a material that is not easy to break, and the reflectivity of the material is 0.5%≤R≤20%. Figure 1 and Figure 2 As shown, in an embodiment of the present application, the array-like microstructure includes: 240 needle-hair-like protrusions, and the 240 needle-hair-like protrusions are arranged and deployed on the surface in an array of 15X 16. Through the arrangement in the array, the interior of the array-like microstructure has the effect of suppressing surface stray light. In an embodiment of the present application, the needle-hair-like array arrangement can also be a 10X 16 array, or a 10X 10 array. The above is only an exemplary description and cannot be used to interpret the scope of protection of the present application. Other array arrangements based on the above concept, such as a hexagonal array arrangement, a quadrilateral array arrangement, a curved array arrangement, and a ray array arrangement, are all within the scope of protection of the present application and will not be described in detail here.
[0038] In an embodiment of the present application, the needle-like protrusions are made of a material that is not easy to break, and the lower the reflectivity R of the material is generally, the better the stray light suppression effect is, and the reflectivity of the preferred material is 0.5%≤R≤20%; in an embodiment of the present application, the material made of the needle-like protrusions can also be nylon of the polyamide material type, or a polyester compound, such as polybutylene terephthalate, single-fiber nylon 512 or other nylon modified materials.
[0039] refer to Figure 3 As shown, in the embodiment of the present application, the needle-hair-like protrusion may be in a cylindrical shape, and the cross-section a of the needle-hair-like protrusion and the length b of the needle-hair-like protrusion satisfy: 3 Figure 4 As shown, in the embodiment of the present application, the needle-hair-like protrusion can be in the shape of a truncated cone with a gradually tapered tip, and form a hemisphere at the tip. In the embodiment of the present application, when the tip of the needle-hair-like protrusion gradually tapers, a fillet with an inclination angle c can also be formed at the tip, and the lateral tip inclination angle c of the needle-hair-like protrusion satisfies: 75°≤c≤95°. In the embodiment of the present application, when the needle-hair-like protrusion is manufactured into a cylindrical shape or a truncated cone shape, it is remanufactured by a chemical etching process or a mechanical abrasion process, and the needle-hair-like protrusion can also be manufactured into specific needle hairs of other complex shapes by any of these two methods.
[0040] refer to Figure 5 As shown, in order to enhance the stray light elimination effect of the array-like microstructure, further, when the needle-like protrusions are fixed to the surface, an angle d is formed with the fixed surface. By controlling the angle d to 30°≤d≤90°, the stray light elimination effect can be optimized.
[0041] refer to Figure 6 As shown, in the embodiment of the present application, when the needle-hair-like protrusions are fixed to the surface, on the one hand, the needle-hair-like protrusions can be bonded to the fixed surface by an adhesive, such as by gel bonding. On the other hand, a retaining pad can be provided on the fixed surface, and the needle-hair-like protrusions can be locked to the surface by the retaining pad.
[0042] In the embodiments of the present application, in order to conveniently fix the needle-hair-like protrusions on the surface, the ends of multiple needle-hair-like protrusions can be fused to form a needle-hair-like protrusion cluster, and the array-like microstructure of the present application is formed by multiple needle-hair-like protrusion clusters. In a preferred embodiment, the ends of needle-hair-like protrusions of the same length can be fused to form needle-hair-like protrusion clusters of different lengths; in another preferred embodiment, needle-hair-like protrusions of different lengths can be fused to form a needle-hair-like protrusion cluster, for example, a long needle-hair-like protrusion is fused with a short needle-hair-like protrusion, refer to Figure 7 In the implementation of the present application, when fusing the needle-like protrusion clusters, different numbers of needle-like protrusions can be set according to the size of the surface to be fixed, for example, 5, 10, 20, 50, 100, etc., which are not limited in the implementation of the present application. The above is only an exemplary description and does not represent the scope of protection of the present application.
[0043] refer to Figure 8 As shown, in the lens of the exemplary embodiment of the present application, the array-like microstructure can be attached to the surface of at least one element among the lens barrel, the lens, the spacer, the pressure ring and the shading element in the lens.
[0044] refer to Fig. 9 As shown, in the embodiment of the present application, by setting the array-shaped microstructure on the surface of the pressure ring, it can be effectively used to block the glue stray light during lens assembly.
[0045] Through the array-like microstructure of the present application, the scattering direction of the attached surface can be standardized, thereby achieving the purpose of reducing surface reflection and improving stray light, meeting the requirements of manufacturers and customers for "high image quality" and "eliminating stray light"; at the same time, when the lens, pressure ring and other components of the lens are coordinated and arranged to meet certain conditions, the stray light generated by the lens assembly glue can be significantly reduced.
[0046] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, improvements, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. An array-shaped microstructure, characterized in that: The array-shaped microstructure comprises: n needle-like protrusions, n≥2; The needle-hair-like protrusions are arranged in an array on a surface; The needle-like protrusions are made of a material that is not easy to break, and the reflectivity R of the material satisfies: 0.5%≤R≤20%.
2. The array-like microstructure according to claim 1, characterized in that: The needle-like protrusions are cylindrical or truncated cones with gradually tapering tips.
3. The array-like microstructure according to claim 2, characterized in that: When the needle-like protrusion is a cylinder, the cross-sectional diameter a of the needle-like protrusion and the length b of the needle-like protrusion satisfy:
3. When the needle-like protrusion is a truncated cone with a gradually tapering tip, the lateral tip inclination angle c of the needle-like protrusion satisfies: 75°≤c≤95°.
4. The array-like microstructure according to claim 2, characterized in that: An angle d between the needle-like protrusion and the surface satisfies: 30°≤d≤90°.
5. The array-like microstructure according to claim 1, characterized in that: The needle-hair-like protrusions are fixedly connected to the surface via an adhesive.
6. The array-like microstructure according to claim 1, characterized in that: It also includes a retaining gasket, through which the needle-hair-like protrusions are locked to the surface.
7. The arrayed microstructure according to claim 1, characterized in that: The ends of at least two of the needle-like protrusions are fused to form a needle-like protrusion cluster, and the needle-like protrusion cluster array is distributed on the surface.
8. The arrayed microstructure according to claim 1, characterized in that: The needle-hair-like protrusion cluster is formed by fusing long needle-hair protrusions and short needle-hair-like protrusions, or by fusing needle-hair-like protrusions of the same length.
9. The array-like microstructure according to claim 1, characterized in that: It comprises an array-like microstructure as described in any one of claims 1 to 9, wherein the array-like microstructure is attached to the surface of at least one of the lens barrel, lens, spacer, pressure ring and shading element of the lens.
10. A lens, characterized in that: When the array-shaped microstructure is arranged on the surface of the pressing ring, it is used to shield stray light from the lens assembly glue.
11. The lens according to claim 10, characterized in that: