Optical lens, wafer-level optical module and manufacturing method therefor

Abstract

The embodiments of the present application relate to the technical field of optical devices. Disclosed are an optical lens, a wafer-level optical module and a manufacturing method therefor. The optical lens comprises: a first surface lens and a second surface lens which are respectively formed by photocuring; a connection member formed by photocuring between the first surface lens and the second surface lens, the connection member being used for connecting the first surface lens and the second surface lens into a whole; and a shielding member covering the edges of the first surface lens and the second surface lens, the shielding member being used for shielding external light rays from entering the first surface lens and the second surface lens. In this way, the present application can improve the optical quality of the optical lens, increase the flexibility of optical module design, minimize the size of the optical module, and achieve the effects of preventing light leakage of the optical module and optical interferences caused by adjacent optical elements.

Description

Optical lenses, wafer-level optical modules and their manufacturing methods Technical Field

[0001] This application relates to the field of optical equipment technology, specifically to an optical lens, a wafer-level optical module, and a method for manufacturing the same. Background Technology

[0002] With the rapid development of modern technology, the demand for miniature optical systems in numerous fields is increasing, such as smartphones, drone photography, and miniature medical devices. Traditional optical lens manufacturing technologies have many limitations in meeting the requirements of miniaturization, lightweighting, and high performance. The emergence of wafer-level optical lenses provides a completely new solution to this problem. Wafer-level optical lenses utilize advanced optical manufacturing technologies to successfully and precisely integrate optical components onto tiny wafers. This innovative design not only significantly reduces the size and weight of the optical lens but also achieves excellent optical characteristics and high reliability, injecting new vitality into the development of miniature optical systems.

[0003] Existing wafer-level optical lenses include an A-side lens and a B-side lens, which are integrally molded from transparent epoxy resin using a mold. Because the optical materials of the A-side and B-side lenses are in a liquid state before molding, a siphon effect occurs between the optical materials of the A-side and B-side lenses during the molding and fusion process. This makes it difficult to control the shape and thickness of the molded A-side and B-side lenses, affecting the optical quality of the wafer-level optical lens. Furthermore, air bubbles are easily generated between the A-side and B-side lenses during the molding and fusion process, impacting the optical characteristics of the lens and reducing its optical quality. Summary of the Invention

[0004] In view of the above problems, this application provides an optical lens, a wafer-level optical module and a method for manufacturing the same, which can improve the optical quality of the optical lens, increase the flexibility of the optical module design, minimize the size of the optical module, and prevent light leakage and optical interference from nearby optical elements.

[0005] According to one aspect of the embodiments of this application, an optical lens is provided, the optical lens comprising: a first lens and a second lens respectively photopolymerized; a connector photopolymerized between the first lens and the second lens, the connector being used to connect the first lens and the second lens into one unit; and a shielding member covering the edges of the first lens and the second lens, the shielding member being used to block external light from entering the first lens and the second lens.

[0006] In the optical lens of this application embodiment, the first lens and the second lens are respectively photopolymerized, allowing for precise control of their shape and thickness. By using a photopolymerized connector to link the first and second lenses together, air bubbles can be avoided during the integral molding process, improving the optical characteristics of the lens. Furthermore, the shielding elements covering the edges of the first and second lenses effectively block external light from entering them, ensuring that the lens performance is not affected. Moreover, when multiple optical lenses are combined to form an optical module, the design flexibility of the optical module is increased, minimizing its size and preventing light leakage and optical interference from nearby optical elements.

[0007] In one alternative approach, the first and second lenses have the same refractive index. Having the same refractive index improves the consistency in shape and thickness between the first and second lenses, reduces forming errors caused by differences in material properties, and improves the forming accuracy of the optical lens.

[0008] In one alternative approach, the first and second lenses have different refractive indices. This allows for the design of optical lenses with different optical characteristics to meet specific needs, increasing the design flexibility of optical lenses and enabling them to better adapt to different application scenarios.

[0009] In one alternative embodiment, the surfaces of the first lens and / or the second lens are covered with an anti-reflective layer. The anti-reflective layer reduces reflections from the surfaces of the first and second lenses, thereby increasing their light transmittance.

[0010] In one alternative approach, the shielding component is coated onto the edges of the first and second lenses using photopolymerization technology. By molding the shielding component using photopolymerization, there is no need to spray a light-blocking coating onto the edges of the first and second lenses, reducing processing costs. Furthermore, photopolymerization technology ensures rapid material curing and seamless connection with the first and second lenses, improving the stability of the connection between the shielding component and the first and second lenses.

[0011] According to another aspect of the embodiments of this application, a wafer-level optical module is provided, which includes at least two optical lenses provided in any of the above embodiments; in two adjacent optical lenses, a shielding member of one optical lens is connected to a shielding member of the other optical lens to fix the two adjacent optical lenses and to make a gap between one optical lens and the adjacent first and second lenses of the other optical lens.

[0012] In the wafer-level optical module of this application embodiment, when at least two optical lenses are used to form the wafer-level optical module, the design flexibility of the wafer-level optical module is increased. Furthermore, the shielding member can not only connect and fix two adjacent optical lenses, but also allow there to be a gap between the first and second lenses of the two adjacent optical lenses, effectively ensuring the independence of each optical lens.

[0013] In one alternative approach, the shielding components of two adjacent optical lenses are bonded together using screen-printed adhesive. Screen-printing the adhesive allows for precise control of the adhesive thickness and ensures that the adhesive is applied only to the fixed area of ​​the shielding component. This prevents excess adhesive from contaminating the non-bonded areas of the shielding component or the first and second lenses, thus guaranteeing the reliability of the optical lenses.

[0014] According to another aspect of the embodiments of this application, a method for manufacturing an optical lens is provided. The method includes: fabricating a first mold and a second mold, each having an annular groove on one side, the portion surrounded by the annular groove forming a carrier structure; depositing a first optical material on both the carrier structure of the first mold and the carrier structure of the second mold; irradiating the first optical material with ultraviolet light to solidify the first optical material on the carrier structure of the first mold and the carrier structure of the second mold to form a first lens and a second lens, respectively; depositing a second optical material on the surface of the first lens or the second lens; aligning the annular groove of the first mold with the annular groove of the second mold, and placing the first mold on the second mold, so that... The annular grooves of the first mold and the second mold are aligned, as are the carrier structures of the first mold and the second mold, so that the annular grooves of the first mold and the second mold form an annular cavity, and the second optical material connects the first lens and the second lens; ultraviolet light is irradiated onto the second optical material to cure it and form a connector to connect the first lens and the second lens into one piece; injection molding material is injected into the annular cavity to form a shield covering the edges of the first lens and the second lens, and the annular cavity is constructed such that the height of the shield is greater than the total height of the first lens and the second lens after they are connected into one piece; the first mold and the second mold are separated to obtain a single optical lens.

[0015] In this embodiment, a first mold and a second mold are fabricated, with annular grooves formed on both molds. The portion surrounded by the annular grooves forms a carrier structure. A first optical material is placed on the carrier structure, and ultraviolet light is irradiated onto the first optical material, allowing it to solidify into a first lens and a second lens on the carrier structure. This avoids a siphon effect during the molding of the first and second lenses, accurately controlling their shape and thickness. Furthermore, by placing a second optical material on the surface of the first or second lens, and placing the first mold on the second mold with the annular grooves facing each other, aligning the annular grooves and the carrier structure, an annular cavity is formed between the annular grooves. The second optical material connects the first and second lenses. Irradiating the second optical material with ultraviolet light causes it to solidify, forming a connector between the first and second lenses. This prevents air bubbles from forming during the integral molding of the first and second lenses, improving the optical characteristics of the lenses. Finally, by injecting injection molding material into the annular cavity, a shielding component covering the edges of the first and second lenses is formed, which can effectively block external light from entering the first and second lenses and effectively ensure the performance of the optical lenses.

[0016] In an alternative embodiment, before aligning the annular groove of the first mold with the annular groove of the second mold, the method further includes: placing a shim around the outer periphery of the annular groove of the first or second mold. By changing the height of the shim, the vertical distance between the first and second lenses can be controlled, allowing the second optical material to fully fill the gap between the first and second lenses, thereby enabling control over the height of the center position of the connector.

[0017] In one optional approach, an array of annular grooves is formed on one side of both the first mold and the second mold. The array of annular grooves includes multiple interconnected annular grooves, and the portion surrounded by each annular groove forms a carrier structure. Separating the first mold and the second mold yields a single optical lens. The method further includes: separating the first mold and the second mold to obtain an optical lens array; and cutting the optical lens array to obtain multiple optical lenses. Through this method, multiple optical lenses can be manufactured rapidly, enabling mass production of optical lenses and improving manufacturing efficiency.

[0018] According to another aspect of the embodiments of this application, an optical lens is provided, which is obtained using the manufacturing method of the optical lens provided in any of the above embodiments.

[0019] According to another aspect of the embodiments of this application, a method for manufacturing a wafer-level optical module is provided. The method includes: manufacturing at least two optical lenses, wherein each optical lens is manufactured by the following steps: fabricating a first mold and a second mold, each of the first mold and the second mold having an annular groove on one side, the portion surrounded by the annular groove forming a carrier structure; depositing a first optical material on both the carrier structure of the first mold and the carrier structure of the second mold; irradiating the first optical material with ultraviolet light to solidify the first optical material on the carrier structure of the first mold and the carrier structure of the second mold to form a first lens and a second lens, respectively; depositing a second optical material on the surface of the first lens or the second lens; aligning the annular groove of the first mold with the annular groove of the second mold, and placing the first mold on the second mold. The first and second molds are aligned to form an annular cavity, and the carrier structures of the first and second molds are aligned to form an annular cavity. A second optical material is used to connect the first and second lenses. Ultraviolet light is irradiated onto the second optical material to cure it and form a connector to connect the first and second lenses into one unit. Injection molding material is injected into the annular cavity to form a shielding component covering the edges of the first and second lenses. The annular cavity is configured such that the height of the shielding component is greater than the total height of the first and second lenses after they are connected into one unit. The first and second molds are separated to obtain optical lenses. The shielding components of at least two optical lenses are connected and fixed to form a wafer-level optical module.

[0020] In this embodiment, by photopolymerizing the first and second lenses onto the carrier structures of the first and second molds, a siphon effect during molding can be avoided, allowing for precise control of their shape and thickness. By photopolymerizing a connector between the first and second lenses, air bubbles can be prevented during integral molding, ensuring the optical properties of the lenses. Injection molding material into the annular cavity forms a shielding component covering the edges of the first and second lenses. When at least two optical lenses are connected and fixed to form a wafer-level optical module, the shielding component effectively blocks external light from entering the first and second lenses, and also creates a gap between adjacent first and second lenses, effectively ensuring the independence of each optical lens.

[0021] In one optional approach, an array of annular grooves is formed on one side of both the first mold and the second mold. The array of annular grooves includes multiple interconnected annular grooves, and the portion surrounded by each annular groove forms a carrier structure. Separating the first mold and the second mold to obtain an optical lens further includes: separating the first mold and the second mold to obtain an optical lens array, wherein the optical lens array includes multiple optical lenses. The method further includes: manufacturing a first optical lens array and a second optical lens array; connecting and fixing the shielding components of the multiple optical lenses to form a wafer-level optical module, further including: screen printing adhesive onto the shielding components of the multiple optical lenses in the optical lens array; bonding and fixing the shielding components of the multiple optical lenses in the first optical lens array to the shielding components of the multiple optical lenses in the second optical lens array to form a wafer-level optical module array; and cutting the wafer-level optical module array to obtain multiple wafer-level optical modules. Through the above method, multiple wafer-level optical modules can be manufactured quickly, improving the manufacturing efficiency of wafer-level optical modules.

[0022] According to another aspect of the embodiments of this application, a wafer-level optical module is provided, which is obtained using the manufacturing method of the wafer-level optical module provided in any of the above embodiments.

[0023] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0024] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0025] Figure 1 is a schematic diagram of the structure of an existing wafer-level optical module;

[0026] Figure 2 is a schematic diagram of the structure of the optical lens provided in an embodiment of this application;

[0027] Figure 3 is a schematic diagram of the structure of the optical lens provided in an embodiment of this application;

[0028] Figure 4 is a schematic diagram of the structure of the wafer-level optical module provided in the embodiment of this application;

[0029] Figure 5 is a flowchart illustrating the manufacturing method of the optical lens provided in an embodiment of this application;

[0030] Figure 6 is a schematic diagram of the structure of the first mold and the second mold provided in the embodiment of this application;

[0031] Figure 7 is a schematic diagram of the structure of the first mold placed on the second mold according to an embodiment of this application;

[0032] Figure 8 is a flowchart illustrating a method for manufacturing an optical lens according to another embodiment of this application;

[0033] Figure 9 is a schematic diagram of the structure of the first mold and the second mold provided in another embodiment of this application;

[0034] Figure 10 is a schematic diagram of a structure in which a first mold is placed on a second mold according to another embodiment of this application;

[0035] Figure 11 is a schematic diagram of the structure of the optical lens array provided in an embodiment of this application;

[0036] Figure 12 is a schematic flowchart of the manufacturing method of the wafer-level optical module provided in the embodiment of this application;

[0037] Figure 13 is a schematic flowchart of a method for manufacturing a wafer-level optical module according to another embodiment of this application;

[0038] Figure 14 is a schematic diagram of the structure of the wafer-level optical module array provided in the embodiment of this application.

[0039] The reference numerals in the detailed embodiments are as follows: 10. Existing wafer-level optical module; 1. Existing optical lens; 2. A-side lens; 3. B-side lens; 4. Shielding layer; 5. Separating layer; 20. Wafer-level optical module; 30. Optical lens array; 30a. First optical lens array; 30b. Second optical lens array; 40. Wafer-level optical module array; 100. Optical lens; 100a. First optical lens; 100b. Second optical lens; 110. First-side lens; 111. Anti-reflective layer; 120. Second-side lens; 130. Connector; 140. Shielding component; 210. First mold; 220. Second mold; 201, 202. Annular groove; 203, 204. Carrier structure; 205. Annular cavity; 206. Gasket. Detailed Implementation

[0040] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0042] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0043] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0044] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A exists, A and B exist simultaneously, and B exists. In addition, the character " / " in this document generally indicates that the related objects before and after it have an "or" relationship.

[0045] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0046] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0047] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0048] Optical lenses have a wide range of applications, from everyday smartphone cameras and miniature projectors to professional fields such as drone photography and miniature medical devices (e.g., endoscopes), where they have demonstrated great advantages and potential.

[0049] As shown in Figure 1, the existing wafer-level optical module 10 includes multiple sets of existing optical lenses 1. Each set of existing optical lenses 1 includes an A-side lens 2, a B-side lens 3, a shielding layer 4, and a separating layer 5. The A-side lens 2 and B-side lens 3 are integrally molded from transparent epoxy resin using a mold. Specifically, transparent liquid epoxy resin is injected into the lens areas of the molds for the A-side lens 2 and the B-side lens 3, respectively. The two molds are then aligned and assembled, fusing the transparent liquid epoxy resin on the two molds. Afterward, ultraviolet light is used to irradiate the transparent liquid epoxy resin, causing it to cure and solidify, thus integrally molding the A-side lens 2 and B-side lens 3.

[0050] However, since the optical materials of lens A2 and lens B3 are in a liquid state before molding, a siphon effect occurs during the imprinting and fusion process. This causes the shape and thickness of lens A2 and lens B3 after solidification to deviate from the expected values. In other words, during the integral molding process of lens A2 and lens B3, it is difficult to control their shape and thickness, affecting the optical quality of the lens. Furthermore, air bubbles are easily generated between lens A2 and lens B3 during the imprinting and fusion process, affecting the optical characteristics of the lens and reducing its optical quality.

[0051] Based on this, this application provides an optical lens in which a first lens and a second lens are first photopolymerized and molded separately, and then a connector is photopolymerized and molded between the first lens and the second lens, so that the connector can connect the first lens and the second lens into one piece. Photopolymerizing and molding the first lens and the second lens separately allows for precise control of the shape and thickness of the first lens and the second lens respectively. Furthermore, connecting the first lens and the second lens after photopolymerization and molding by the photopolymerized connector can avoid the generation of air bubbles during the process of connecting the first lens and the second lens into one piece, thereby improving the optical characteristics of the optical lens and thus improving the optical quality of the optical lens.

[0052] The optical lenses provided in this application include, but are not limited to, those used in smartphones, drone photography, miniature medical devices, miniature projectors, AR (Augmented Reality) / VR (Virtual Reality) fields.

[0053] Please refer to Figure 2, which shows a schematic diagram of the structure of an optical lens provided in an embodiment of the present invention. As shown, the optical lens 100 includes a first lens 110 and a second lens 120, a connector 130, and a shielding member 140. The first lens 110 and the second lens 120 are respectively photopolymerized. The connector 130 is photopolymerized between the first lens 110 and the second lens 120, and is used to connect the first lens 110 and the second lens 120 into one unit. The shielding member 140 covers the edges of the first lens 110 and the second lens 120, and is used to block external light from entering the first lens 110 and the second lens 120.

[0054] The shape and thickness of the first lens 110 and the second lens 120 can be the same or different.

[0055] The first lens 110 and the second lens 120 can be formed by photopolymerization using optical materials with different refractive indices, resulting in the first lens 110 and the second lens 120 having different refractive indices. This allows for the design of optical lenses 100 with different optical characteristics according to requirements, improving the design flexibility of the optical characteristics of the optical lens 100 and enabling it to better adapt to different application scenarios.

[0056] Alternatively, optical materials with the same refractive index can be used to photopolymerize and form the first lens 110 and the second lens 120, thus giving the first lens 110 and the second lens the same refractive index. The same refractive index improves the consistency of the shape and thickness of the first lens 110 and the second lens 120, reduces molding errors caused by differences in material properties, and improves the molding accuracy of the optical lens 100.

[0057] As shown in Figure 6, optical materials can be sprayed onto the first mold 210 and the second mold 220 respectively. Then, ultraviolet light is irradiated onto the optical materials on the first mold 210 and the second mold 220 respectively, causing the optical materials on the first mold 210 and the second mold 220 to be solidified and formed on the first mold 210 and the second mold 220 respectively, resulting in the first lens 110 and the second lens 120. In this way, by setting the shape of the structure carrying the optical material in the first mold 210 and the second mold 220, and by controlling the amount of optical material used, the shape and thickness of the first lens 110 and the second lens 120 can be precisely controlled.

[0058] Please refer to Figure 2. When the first lens 110 and the second lens 120 have the same refractive index, a photopolymerized connector 130 made of an optical material with the same refractive index as the first lens 110 can be used, so that the connector 130 has the same refractive index as both the first lens 110 and the second lens 120. When the first lens 110 and the second lens 120 have different refractive indices, depending on the optical characteristics required, a photopolymerized connector 130 made of an optical material with the same refractive index as the first lens 110 can be used, or a photopolymerized connector 130 made of an optical material with the same refractive index as the second lens 120 can be used, so that the refractive index of the connector 130 is the same as either the first lens 110 or the second lens 120. Of course, depending on the different optical characteristics required, a connector 130 made of an optical material with a refractive index different from both the first lens 110 and the second lens 120 can also be used.

[0059] The connector 130 connects the first lens 110 and the second lens 120 into one unit, meaning that the connector 130 basically fills the gap between the first lens 110 and the second lens 120, and does not affect the optical characteristics of the first lens 110 and the second lens 120.

[0060] Please refer to Figure 6 and Figure 2 simultaneously. Specifically, after forming the first lens 110 and the second lens 120, optical material is sprayed onto the surface of either the first lens 110 or the second lens 120. Then, the first mold 210 is aligned and gradually moved closer to the second mold. As the first lens 110 moves closer to the second lens 120, the optical material is squeezed and flows outwards, gradually filling the gap between the first lens 110 and the second lens 120. Afterwards, ultraviolet light is irradiated onto the optical material, which then solidifies into a connector 130 that connects the first lens 110 and the second lens 120, thereby connecting the first lens 110 and the second lens 120 into a single unit. By first photocuring the first lens 110 and the second lens 120, and then photocuring the connector 130 connecting the first lens 110 and the second lens 120, the shape and thickness of the first lens 110 and the second lens 120 can be accurately controlled. This also avoids air bubbles during the process of connecting the first lens 110 and the second lens 120 into one piece, ensuring the optical characteristics of the optical lens 100 and thus ensuring the optical quality of the optical lens 100.

[0061] The shielding member 140 of this application not only has the function of preventing light from passing through, but also has the function of separating the first lens 110 and the second lens 120 from other components or optical devices when the optical lens 100 is connected to other components or optical devices through the shielding member 140.

[0062] Specifically, the shielding member 140 can be made of an opaque polymer material to effectively prevent light from passing through. The shielding member 140 covering the edges of the first lens 110 and the second lens 120 means that the inner side of the shielding member 140 is connected to the edges of the first lens 110 and the second lens 120, so that the shielding member 140 completely covers the first lens 110 and the second lens 120 inside.

[0063] As shown in Figure 2, the thickness t of the shielding member 140 is greater than the total thickness T of the first lens 110 and the second lens 120 after they are connected as a single unit, leaving spaces at both ends of the shielding member 140 where no lenses are present. In this way, the shielding member 140 can completely block the first lens 110 and the second lens 120, completely preventing external light from entering them. Furthermore, when the optical lens 100 is connected to other components or optical devices via the shielding member 140, the shielding member 140 can separate the first lens 110 from other components or optical devices, and also separate the second lens 120 from other components or optical devices, ensuring that the first lens 110 and the second lens 120 are not affected by other components or optical devices, thus guaranteeing the performance of the optical lens 100.

[0064] In the optical lens 100 of this embodiment, the first lens 110 and the second lens 120 are photopolymerized, allowing for precise control of their shape and thickness. By using a photopolymerized connector 130 to connect the first lens 110 and the second lens 120 into a single unit, air bubbles can be avoided during the integral molding process, thus improving the optical characteristics of the optical lens 100. Furthermore, the shielding member 140 covering the edges of the first lens 110 and the second lens 120 effectively blocks external light from entering them, ensuring that the performance of the optical lens 100 is not affected. Moreover, the use of multiple optical lenses 100 to form an optical module increases the flexibility of the optical module design, minimizes the module size, and prevents light leakage and optical interference from nearby optical elements.

[0065] To ensure the optical characteristics of the optical lens 100, this application further proposes an implementation method. Please refer to FIG3, which shows a schematic diagram of the structure of the wafer-level optical module provided in the embodiment of this application. As shown in the figure, the surfaces of the first lens 110 and / or the second lens 120 are covered with an anti-reflection layer 111.

[0066] The anti-reflective layer 111 can be disposed on the side of the first lens 110 and the second lens 120 that is opposite to each other, as shown in Figure 3. Of course, the anti-reflective layer 111 can also be disposed only on the surface of the first lens 110 or the second lens 120. The anti-reflective layer 111 can reduce the reflection on the surfaces of the first lens 110 and the second lens 120 and improve the light transmittance of the first lens 110 and the second lens 120.

[0067] The anti-reflection layer 111 can be an ARC (Anti-Reflection Coating), deposited on the surfaces of the first lens 110 and the second lens 120. The anti-reflection layer 111 can also be an ARS (Anti-Reflection Structure), such as a moth-eye structure, a microlens array, or a subwavelength structure.

[0068] To improve the reliability of the optical lens 100, this application further proposes an implementation method. Please refer to FIG2. As shown in FIG2, the shielding member 140 is wrapped around the edges of the first lens 110 and the second lens 120 by photopolymerization technology.

[0069] By using edge photocuring technology to form the shielding component 140 of the first lens 110 and the second lens 120, there is no need to spray a light-shielding coating on the edges of the first lens 110 and the second lens 120, which reduces processing costs. In addition, it can also ensure rapid curing of the material and seamless connection with the first lens 110 and the second lens 120, improve the connection stability between the shielding component 140 and the first lens 110 and the second lens 120, thereby improving the reliability of the optical lens 100.

[0070] According to another aspect of the embodiments of this application, a wafer-level optical module is proposed. FIG4 shows a schematic diagram of the structure of the wafer-level optical module provided in the embodiment of the present invention. As shown in the figure, the wafer-level optical module 20 includes at least two optical lenses of the embodiment shown in FIG2 (two optical lenses are taken as examples in FIG4, and are shown as 100a and 100b). In two adjacent optical lenses 100, the shielding member 140 of one optical lens 100 is connected to the shielding member 140 of the other optical lens 100 to fix the two adjacent optical lenses 100, and to make a gap between one optical lens 100 and the adjacent first lens 110 and second lens 120 of the other optical lens 100.

[0071] Specifically, the number of optical lenses 100 in the wafer-level optical module 20 can be set according to the actual optical characteristic requirements. For example, the wafer-level optical module 20 may include two optical lenses 100 as shown in FIG4, or it may include three or more optical lenses 100. This application uses the wafer-level optical module 20 including two optical lenses 100 as an example for illustration, which does not constitute a limitation.

[0072] As shown in Figure 4, the refractive indices of the first lens 110 and the second lens 120 of the first optical lens 100a can be the same, while the refractive indices of the first lens 110 and the second lens 120 of the second optical lens 100b can be the same or different; the refractive indices of the first lens 110 and the second lens 120 of the first optical lens 100a can be different, while the refractive indices of the first lens 110 and the second lens 120 of the second optical lens 100b can be the same or different.

[0073] When optical materials with different refractive indices are used to photopolymerize and form the first lens 110 and the second lens 120, the first lens 110 and the second lens 120 have different refractive indices. In this way, more wafer-level optical modules 20 with different optical characteristics can be designed according to requirements, which improves the design flexibility of the optical characteristics of the wafer-level optical module 20 and makes the wafer-level optical module 20 better adaptable to different application scenarios.

[0074] The shielding member 140 of the first optical lens 100a can be bonded and fixed to the shielding member 140 of the second optical lens 100b. For example, adhesive can be applied to the shielding member 140 of the first optical lens 100a and then bonded and fixed to the shielding member 140 of the second optical lens 100b. Bonding and fixing the two optical lenses 100 with adhesive is convenient and allows for quick connection of the two optical lenses 100, improving the manufacturing efficiency of the wafer-level optical module 20.

[0075] As shown in Figure 4, when the thickness t of the shielding member 140 is greater than the total thickness T of the first lens 110 and the second lens 120 after they are connected as a whole, the shielding member 140 can separate the second lens 120 of the first optical lens 100a from the first lens 110 of the second optical lens 100b after the shielding member 140 of the first optical lens 100a is connected to the shielding member 140 of the second optical lens 100b. This ensures that there is a gap between the second lens 120 of the first optical lens 100a and the first lens 110 of the second optical lens 100b, effectively avoiding optical path cross-interference between different optical lenses 100 and ensuring the independence of each optical lens 100.

[0076] In the wafer-level optical module 20 of this application embodiment, when at least two optical lenses 100 are used to form the wafer-level optical module 20, the design flexibility of the wafer-level optical module 20 is increased. Furthermore, the shielding member 140 can not only connect and fix two adjacent optical lenses 100, but also make the first lens 110 and the second lens 120 of the two adjacent optical lenses 100 have a gap, effectively ensuring the independence of each optical lens 100.

[0077] To ensure the reliability of the wafer-level optical module 20, this application further proposes an implementation method. Please continue to refer to Figure 4, where the shielding members 140 of two adjacent optical lenses 100 are bonded and fixed by screen-printed adhesive.

[0078] Specifically, in two adjacent optical lenses 100, adhesive can be screen-printed onto the shield 140 of the first optical lens 100a, and then adhered to the shield 140 of the second optical lens 100b, thereby bonding and fixing the two optical lenses 100 together. By screen-printing the adhesive, not only can the thickness of the adhesive be precisely controlled, but it can also ensure that the adhesive is applied to the fixing area of ​​the shield 140, avoiding excess adhesive contaminating the non-bonding areas of the shield 140 or the first lens 110 and the second lens 120, thus ensuring the reliability of the optical lenses 100.

[0079] According to another aspect of the embodiments of this application, a method for manufacturing an optical lens is proposed. This method is used to manufacture the optical lens 100 in the foregoing embodiments. Figure 5 shows a flowchart illustrating the manufacturing method of the optical lens provided in the embodiments of this application. Figure 6 shows a structural schematic diagram of the first mold and the second mold provided in the embodiments of this application. Figure 7 shows a structural schematic diagram of the first mold placed on the second mold provided in the embodiments of this application. As shown in Figures 2, 5, 6, and 7, the manufacturing method of the optical lens includes the following steps:

[0080] Step S110: Make a first mold 210 and a second mold 220. An annular groove (201, 202) is provided on one side of both the first mold 210 and the second mold 220. The part surrounded by the annular groove (201, 202) forms a carrier structure (203, 204).

[0081] Both the first mold 210 and the second mold 220 are made of light-transmitting material. The first mold 210 and the second mold 220 can be the same; they can also be different. For example, while ensuring that the outer contour of the carrier structure 203 is the same as that of the carrier structure 204, the shape of the carrier structure 203 can be different from that of the carrier structure 204. The shape of the carrier structures (203, 204) is designed according to the shape requirements of the lens.

[0082] Step S120: The first optical material is provided on the carrier structure 203 of the first mold 210 and the carrier structure 204 of the second mold 220.

[0083] Specifically, a first optical material can be sprayed onto carrier structure 203 and carrier structure 204, and the first optical material can cover carrier structure 203 and carrier structure 204. The refractive indices of the first optical material on carrier structure 203 and the first optical material on carrier structure 204 can be the same or different.

[0084] Step S130: Irradiate the first optical material with ultraviolet light so that the first optical material is cured on the carrier structure 203 of the first mold 210 and the carrier structure 204 of the second mold 220 to form the first lens 110 and the second lens 120, respectively.

[0085] For example, ultraviolet light can be irradiated onto the first optical material on the carrier structure 203 and the carrier structure 204 to solidify the first optical material, forming a first lens 110 on the carrier structure 203 and a second lens 120 on the carrier structure 204.

[0086] Step S140: Deposit a second optical material on the surface of the first lens 110 or the second lens 120.

[0087] For example, a second optical material can be sprayed onto the surface of the first lens 110, or onto the surface of the second lens 120. The refractive index of the second optical material can be the same as that of the first lens 110, or the same as that of the second lens 120.

[0088] Step S150: Orient the annular groove 201 of the first mold 210 toward the annular groove 202 of the second mold 220, and place the first mold 210 on the second mold 220 so that the annular groove 201 of the first mold 210 and the annular groove 202 of the second mold 220 are aligned, and the carrier structure 203 of the first mold 210 and the carrier structure 204 of the second mold 220 are aligned, so that the annular groove 201 of the first mold 210 and the annular groove 202 of the second mold 220 form an annular cavity 205, and the second optical material connects the first lens 110 and the second lens 120.

[0089] Taking the second optical material set on the second lens 120 as an example, during the process of placing the first mold 210 on the second mold 220, the second optical material first comes into contact with the first lens 110. Then, as the first mold 210 approaches, the first lens 110 squeezes the second optical material into the gap between the first lens 110 and the second lens 120 to fill the gap between the first lens 110 and the second lens 120.

[0090] In some embodiments, alignment marks may be provided on the opposite arrangement of the first mold 210 and the second mold 220, so that the first mold 210 can be quickly aligned with the second mold 220 and placed on the second mold 220.

[0091] Step S160: Irradiate the second optical material with ultraviolet light to cure the second optical material and form a connector 130 to connect the first lens 110 and the second lens 120 into one piece.

[0092] For example, ultraviolet light can be irradiated onto the second optical material through the first mold 210 or the second mold 220 to cure the second optical material and form a connector 130 between the first lens 110 and the second lens 120.

[0093] Preferably, before step S150, a shim 206 can be provided around the annular groove 201 of the first mold 210 or the annular groove 202 of the second mold 220, as shown in FIG6. This allows the shim 206 to support the first mold 210 when it is placed on the second mold 220, thus creating a gap between the first lens 110 and the second lens 120. In this way, by changing the height H of the shim 206, the vertical distance between the first lens 110 and the second lens 120 can be controlled, allowing the second optical material to fully fill the gap between them, thereby controlling the height h of the center position of the connector 130.

[0094] Step S170: Injection molding material into the annular cavity 205 to form a shield 140 covering the edges of the first lens 110 and the second lens 120. The annular cavity 205 is configured such that the height of the shield 140 is greater than the total height of the first lens 110 and the second lens 120 after they are connected as one unit.

[0095] The injection molding material is an opaque polymer material that can be cured by ultraviolet light.

[0096] Injection molding material is injected into the annular cavity 205, and after the injection molding material fills the annular cavity 205 and makes full contact with the first lens 110, the second lens 120 and the connector 130, ultraviolet light is irradiated through the first mold 210 or the second mold 220 to solidify the injection molding material and form the shielding member 140.

[0097] If the height of the annular cavity 205 is greater than the total height of the first lens 110 and the second lens 120 connected together, then the shielding member 140 is greater than the total height of the first lens 110 and the second lens 120 connected together.

[0098] Preferably, since the injection molding material is an opaque material, ultraviolet light cannot completely penetrate it. Therefore, while irradiating the injection molding material with ultraviolet light, it can also be heat-baked to ensure that the injection molding material is completely cured.

[0099] Step S180: Separate the first mold 210 and the second mold 220 to obtain a single optical lens 100.

[0100] This step yields the optical lens 100 shown in Figure 2.

[0101] In this embodiment, a first mold 210 and a second mold 220 are fabricated, wherein annular grooves (201, 202) are formed on the first mold 210 and the second mold 220, and the portion surrounded by the annular grooves (201, 202) forms a carrier structure (203, 204). By setting a first optical material on the carrier structure (203, 204) and irradiating the first optical material with ultraviolet light, the first optical material can be cured on the carrier structure 203 and the carrier structure 204 to form a first lens 110 and a second lens 120, respectively. In this way, the siphon effect of the first lens 110 and the second lens 120 during molding can be avoided, and the shape and thickness of the first lens 110 and the second lens 120 can be accurately controlled.

[0102] Furthermore, by providing a second optical material on the surface of the first lens 110 or the second lens 120, and placing the first mold 210 on the second mold 220 with the annular groove 201 facing the annular groove 202, so that the annular groove 201 is aligned with the annular groove 202 and the carrier structure 203 is aligned with the carrier structure 204, the annular groove 201 and the annular groove 202 can form an annular cavity 205. The second optical material connects the first lens 110 and the second lens 120. In this way, by irradiating the second optical material with ultraviolet light, the second optical material can be cured to form a connector 130 connecting the first lens 110 and the second lens 120, thereby avoiding the generation of air bubbles when the first lens 110 and the second lens 120 are integrally formed, and improving the optical characteristics of the optical lens 100.

[0103] Finally, by injecting injection molding material into the annular cavity 205, a shielding member 140 is formed covering the edges of the first lens 110 and the second lens 120, which can effectively block external light from entering the first lens 110 and the second lens 120, effectively ensuring the performance of the optical lens 100.

[0104] To improve the manufacturing efficiency of the optical lens 100, please continue to refer to Figure 2, and in conjunction with Figures 8-11. Figure 8 shows a schematic flowchart of the manufacturing method of an optical lens provided in another embodiment of this application. Figure 9 shows a schematic diagram of the structure of the first mold and the second mold provided in another embodiment of this application. Figure 10 shows a schematic diagram of the structure of the first mold placed on the second mold provided in another embodiment of this application. Figure 11 shows a schematic diagram of the structure of the optical lens array provided in an embodiment of this application. As shown in the figures, the manufacturing method of the optical lens includes the following steps:

[0105] Step S210: Fabricate a first mold 210 and a second mold 220. Both the first mold 210 and the second mold 220 have an array of annular grooves on one side. The array of annular grooves includes multiple interconnected annular grooves (201, 202). The portion surrounded by each annular groove (201, 202) forms a carrier structure (203, 204).

[0106] As shown in Figure 9, the first mold 210 has multiple annular grooves 201, and the second mold 220 has multiple annular grooves 202. The first mold 210 has multiple carrier structures 203, and the second mold 220 has multiple carrier structures 204.

[0107] Step S220: The first optical material is provided on both the carrier structure 203 of the first mold 210 and the carrier structure 204 of the second mold 220.

[0108] Step S230: Irradiate the first optical material with ultraviolet light so that the first optical material is solidified on the carrier structure 203 of the first mold 210 and the carrier structure 204 of the second mold 220 to form the first lens 110 and the second lens 120, respectively.

[0109] Step S240: Deposit a second optical material on the surface of the first lens 110 or the second lens 120.

[0110] Step S250: Orient the annular groove 201 of the first mold 210 toward the annular groove 202 of the second mold 220, and place the first mold 210 on the second mold 220 so that the annular groove 201 of the first mold 210 and the annular groove 202 of the second mold 220 are aligned, and the carrier structure 203 of the first mold 210 and the carrier structure 204 of the second mold 220 are aligned, so that the annular groove 201 of the first mold 210 and the annular groove 202 of the second mold 220 form an annular cavity 205, and the second optical material connects the first lens 110 and the second lens 120.

[0111] Step S260: Irradiate the second optical material with ultraviolet light to cure the second optical material and form a connector 130 to connect the first lens 110 and the second lens 120 into one piece.

[0112] Step S270: Injection molding material into the annular cavity 205 to form a shield 140 covering the edges of the first lens 110 and the second lens 120. The annular cavity 205 is configured such that the height of the shield 140 is greater than the total height of the first lens 110 and the second lens 120 after they are connected as one unit.

[0113] Since the multiple annular grooves (201, 202) on the first mold 210 and the second mold 220 are interconnected, the multiple annular cavities 205 are interconnected. Thus, by injecting injection material into one annular cavity 205, injection material can be injected into all annular cavities 205, thereby improving manufacturing efficiency.

[0114] Step S280: Separate the first mold 210 and the second mold 220 to obtain the optical lens array 30.

[0115] As shown in Figure 11, the optical lens array 30 includes multiple optical lenses 100.

[0116] The steps S210-S280 described above can be referred to as steps S110-S180 in the embodiment shown in Figure 5, and will not be repeated here.

[0117] Step S290: Cut the optical lens array 30 to obtain multiple optical lenses 100.

[0118] By cutting along the dotted line in Figure 11, multiple optical lenses 100 as shown in Figure 2 can be obtained.

[0119] The above method can be used to quickly manufacture multiple optical lenses 100, realize the mass production of optical lenses 100, and improve the manufacturing efficiency of optical lenses 100.

[0120] According to another aspect of the embodiments of this application, an optical lens is provided, which is manufactured using the optical lens manufacturing method provided in the above embodiments.

[0121] According to another aspect of the embodiments of this application, a method for manufacturing a wafer-level optical module is provided. This method is used to manufacture the wafer-level optical module 20 in the foregoing embodiments. Please continue to refer to Figures 2, 4, 6, and 7, and in conjunction with Figure 12. Figure 12 shows a schematic flowchart of the method for manufacturing a wafer-level optical module provided in the embodiments of this application. As shown in the figure, the method for manufacturing the wafer-level optical module includes the following steps:

[0122] Step S300: Manufacture at least two optical lenses 100, wherein each optical lens 100 is manufactured by steps S310-S380.

[0123] The specific structure of each optical lens 100 can be referred to in the embodiment shown in Figure 2, and will not be described in detail here.

[0124] Step S310: Make a first mold 210 and a second mold 220. Both the first mold 210 and the second mold 220 have annular grooves (201, 202) on one side. The portion surrounded by the annular grooves (201, 202) forms a carrier structure (203, 204).

[0125] Step S320: The first optical material is disposed on the carrier structure 203 of the first mold 210 and the carrier structure 204 of the second mold 220.

[0126] Step S330: Irradiate the first optical material with ultraviolet light so that the first optical material is cured on the carrier structure 203 of the first mold 210 and the carrier structure 204 of the second mold 220 to form the first lens 110 and the second lens 120, respectively.

[0127] Step S340: Deposit a second optical material on the surface of the first lens 110 or the second lens 120.

[0128] Step S350: Orient the annular groove 201 of the first mold 210 toward the annular groove 202 of the second mold 220, and place the first mold 210 on the second mold 220 so that the annular groove 201 of the first mold 210 and the annular groove 202 of the second mold 220 are aligned, and the carrier structure 203 of the first mold 210 and the carrier structure 204 of the second mold 220 are aligned, so that the annular groove 201 of the first mold 210 and the annular groove 202 of the second mold 220 form an annular cavity 205, and the second optical material connects the first lens 110 and the second lens 120.

[0129] Step S360: Irradiate the second optical material with ultraviolet light to cure the second optical material and form a connector 130 to connect the first lens 110 and the second lens 120 into one piece.

[0130] Preferably, before step S350, a gasket 206 may be provided around the annular groove 201 of the first mold 210 or the annular groove 202 of the second mold 220 as shown in FIG6. The specific structure, size and function of the gasket 206 are described in the embodiment shown in FIG8, and will not be repeated here.

[0131] Step S370: Injection molding material into the annular cavity 205 to form a shield 140 covering the edges of the first lens 110 and the second lens 120. The annular cavity 205 is configured such that the height of the shield 140 is greater than the total height of the first lens 110 and the second lens 120 after they are connected as one unit.

[0132] Step S380: Separate the first mold 210 and the second mold 220 to obtain the optical lens 100.

[0133] This step yields either the optical lens 100 shown in Figure 2, or one of the optical lenses 100 shown in Figure 4.

[0134] The steps S310-S380 described above can be referred to as steps S110-S180 in the embodiment shown in Figure 5, and will not be repeated here.

[0135] Step S400: Connect and fix the shielding parts 140 of at least two optical lenses 100 to form a wafer-level optical module 20.

[0136] After obtaining at least two optical lenses 100, for example, two optical lenses 100, the wafer-level optical module 20 shown in FIG4 can be obtained by bonding and fixing the shielding member 140 of the two optical lenses 100 together. Since the shielding member 140 is greater than the total height of the first lens 110 and the second lens 120 after being connected as a whole, as shown in FIG4, the second lens 120 of the first optical lens 100a and the first lens 110 of the second optical lens 100b in the wafer-level optical module 20 are spaced apart.

[0137] In this embodiment, by photopolymerizing the first lens 110 and the second lens 120 onto the carrier structures (203, 204) of the first mold 210 and the second mold 220, the siphon effect during molding of the first lens 110 and the second lens 120 can be avoided, and the shape and thickness of the first lens 110 and the second lens 120 can be accurately controlled. By photopolymerizing the connector 130 between the first lens 110 and the second lens 120, air bubbles can be avoided during the integral molding of the first lens 110 and the second lens 120, thus ensuring the optical characteristics of the optical lens 100. By injecting injection molding material into the annular cavity 205, a shielding member 140 is formed covering the edges of the first lens 110 and the second lens 120. When at least two optical lenses 100 are connected and fixed through the shielding member 140 to form a wafer-level optical module 20, the shielding member 140 can not only effectively block external light from entering the first lens 110 and the second lens 120, but also ensure that there is a gap between the adjacent first lens 110 and the second lens 120 of two adjacent optical lenses 100, effectively guaranteeing the independence of each optical lens 100.

[0138] To improve the manufacturing efficiency of the wafer-level optical module 20, please continue to refer to Figures 4, 9, 10, and 11, and in conjunction with Figures 13 and 14. Figure 13 shows a schematic flowchart of a manufacturing method for a wafer-level optical module provided in another embodiment of this application, and Figure 14 shows a schematic structural diagram of a wafer-level optical module array provided in an embodiment of this application. As shown in the figures, the manufacturing method of the wafer-level optical module includes the following steps:

[0139] Step S500: Manufacture at least two optical lens arrays 30, wherein each optical lens array 30 is manufactured by steps S510-S580.

[0140] As shown in Figure 11, the optical lens array 30 includes multiple optical lenses 100.

[0141] Step S510: Fabricate a first mold 210 and a second mold 220. An array of annular grooves is provided on one side of both the first mold 210 and the second mold 220. The array of annular grooves includes multiple interconnected annular grooves (201, 202). The portion surrounded by each annular groove (201, 202) forms a carrier structure (203, 204).

[0142] Step S520: The first optical material is provided on the carrier structure 203 of the first mold 210 and the carrier structure 204 of the second mold 220.

[0143] Step S530: Irradiate the first optical material with ultraviolet light so that the first optical material is cured on the carrier structure 203 of the first mold 210 and the carrier structure 204 of the second mold 220 to form the first lens 110 and the second lens 120, respectively.

[0144] Step S540: Deposit a second optical material on the surface of the first lens 110 or the second lens 120.

[0145] Step S550: Orient the annular groove 201 of the first mold 210 toward the annular groove 202 of the second mold 220, and place the first mold 210 on the second mold 220 so that the annular groove 201 of the first mold 210 and the annular groove 202 of the second mold 220 are aligned, and the carrier structure 203 of the first mold 210 and the carrier structure 204 of the second mold 220 are aligned, so that the annular groove 201 of the first mold 210 and the annular groove 202 of the second mold 220 form an annular cavity 205, and the second optical material connects the first lens 110 and the second lens 120.

[0146] Step S560: Irradiate the second optical material with ultraviolet light to cure the second optical material and form a connector 130 to connect the first lens 110 and the second lens 120 into one piece.

[0147] Step S570: Injection molding material into the annular cavity 205 to form a shield 140 covering the edges of the first lens 110 and the second lens 120. The annular cavity 205 is configured such that the height of the shield 140 is greater than the total height of the first lens 110 and the second lens 120 after they are connected as one unit.

[0148] Step S580: Separate the first mold 210 and the second mold 220 to obtain an optical lens array 30, which includes multiple optical lenses 100.

[0149] The steps S510-S580 described above can be referred to as steps S210-S280 in the embodiment shown in Figure 8, and will not be repeated here.

[0150] For example, as shown in Figure 14, both the first optical lens array 30a and the second optical lens array 30b can be manufactured through steps S510-S580.

[0151] Step S600: Screen print adhesive onto the shielding member 140 of the plurality of optical lenses 100 in the optical lens array 30.

[0152] Step S700: The shielding members 140 of the multiple optical lenses 100 in the first optical lens array 30a are bonded and fixed to the shielding members 140 of the multiple optical lenses 100 in the second optical lens array 30b to form a wafer-level optical module array 40.

[0153] By screen printing the adhesive, not only can excess adhesive be avoided from contaminating the non-bonding areas of the shield 140 or the first lens 110 and the second lens 120, but adhesive can also be quickly applied to the fixed areas of the shield 140 of each optical lens 100 in the optical lens array 30, thereby quickly bonding and fixing the two optical lens arrays (30a, 30b) together and improving manufacturing efficiency.

[0154] Step S800: Cut the wafer-level optical module array 40 to obtain multiple wafer-level optical modules 20.

[0155] By cutting the wafer-level optical module array 40 along the dashed line in Figure 14, multiple wafer-level optical modules 20 can be obtained.

[0156] The above method can be used to quickly manufacture multiple wafer-level optical modules 20, thereby improving the manufacturing efficiency of the wafer-level optical modules 20.

[0157] According to another aspect of the embodiments of this application, a wafer-level optical module is provided, which is manufactured using the wafer-level optical module manufacturing method provided in the above embodiments.

[0158] The specific implementation process and beneficial effects of the above embodiments can be referred to the foregoing embodiments, and will not be repeated here.

[0159] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An optical lens, characterized in that, The optical lens includes: The first and second lenses were respectively photopolymerized. A photopolymerizable connector is formed between the first lens and the second lens, the connector being used to connect the first lens and the second lens into a single unit; and A shielding member covering the edges of the first lens and the second lens, the shielding member being used to block external light from entering the first lens and the second lens.

2. The optical lens of claim 1, wherein, The first lens and the second lens have the same refractive index.

3. The optical lens according to claim 1, characterized in that, The first lens and the second lens have different refractive indices.

4. The optical lens according to claim 1, characterized in that, The surfaces of the first lens and / or the second lens are covered with an anti-reflective layer.

5. The optical lens of claim 1, wherein, The shielding element is applied to the edges of the first lens and the second lens using photopolymerization technology.

6. A wafer-level optical module, comprising: The wafer-level optical module includes at least two optical lenses as described in any one of claims 1 to 5; In two adjacent optical lenses, the shielding member of one optical lens is connected to the shielding member of the other optical lens to fix the two adjacent optical lenses and to create a gap between the first and second lenses of the adjacent optical lens of the other optical lens.

7. The wafer-level optical module of claim 6, wherein, The shielding parts of two adjacent optical lenses are bonded and fixed by screen-printed adhesive.

8. A method of manufacturing an optical lens, characterized in that, The method includes: A first mold and a second mold are made. An annular groove is provided on one side of both the first mold and the second mold. The portion surrounded by the annular groove forms a carrier structure. The first optical material is provided on both the carrier structure of the first mold and the carrier structure of the second mold; The first optical material is irradiated with ultraviolet light so that the first optical material is cured into a first lens and a second lens on the carrier structure of the first mold and the carrier structure of the second mold, respectively. A second optical material is disposed on the surface of the first lens or the second lens; The annular groove of the first mold is aligned with the annular groove of the second mold, and the first mold is placed on the second mold so that the annular groove of the first mold is aligned with the annular groove of the second mold, and the carrier structure of the first mold and the carrier structure of the second mold are aligned so that the annular groove of the first mold and the annular groove of the second mold form an annular cavity, and the second optical material connects the first lens and the second lens. Irradiate the second optical material with ultraviolet light to solidify the second optical material and form a connector to connect the first lens and the second lens into one piece; Injection molding material is injected into the annular cavity to form a shielding component covering the edges of the first lens and the second lens. The annular cavity is configured such that the height of the shielding component is greater than the total height of the first lens and the second lens after they are connected as a whole. Separate the first mold and the second mold to obtain a single optical lens.

9. The method for manufacturing an optical lens according to claim 8, characterized in that, Before aligning the annular groove of the first mold with the annular groove of the second mold, the method further includes: A gasket is provided around the outer periphery of the annular groove of the first mold or the second mold.

10. The method for manufacturing an optical lens according to claim 8, characterized in that, Both the first mold and the second mold have an array of annular grooves on one side. The array of annular grooves includes multiple interconnected annular grooves, and the portion surrounded by each annular groove forms a carrier structure. The step of separating the first mold and the second mold to obtain a single optical lens further includes: Separate the first mold and the second mold to obtain an optical lens array; The optical lens array is cut to obtain multiple optical lenses.

11. An optical lens, characterized in that, The optical lens is obtained using the manufacturing method of the optical lens according to any one of claims 8 to 10.

12. A method for manufacturing a wafer-level optical module, characterized in that, The method includes: Manufacture at least two optical lenses, wherein each optical lens is manufactured by the following steps: A first mold and a second mold are made. An annular groove is provided on one side of both the first mold and the second mold. The portion surrounded by the annular groove forms a carrier structure. The first optical material is provided on both the carrier structure of the first mold and the carrier structure of the second mold; The first optical material is irradiated with ultraviolet light so that the first optical material is cured on the carrier structure of the first mold and the carrier structure of the second mold to form a first lens and a second lens, respectively. A second optical material is disposed on the surface of the first lens or the second lens; The annular groove of the first mold is aligned with the annular groove of the second mold, and the first mold is placed on the second mold so that the annular groove of the first mold is aligned with the annular groove of the second mold, and the carrier structure of the first mold and the carrier structure of the second mold are aligned so that the annular groove of the first mold and the annular groove of the second mold form an annular cavity, and the second optical material connects the first lens and the second lens. Irradiate the second optical material with ultraviolet light to solidify the second optical material and form a connector to connect the first lens and the second lens into one piece; Injection molding material is injected into the annular cavity to form a shielding component covering the edges of the first lens and the second lens. The annular cavity is configured such that the height of the shielding component is greater than the total height of the first lens and the second lens after they are connected as one unit. Separate the first mold and the second mold to obtain the optical lens; The shielding components of the at least two optical lenses are connected and fixed to form a wafer-level optical module.

13. The method for manufacturing a wafer-level optical module according to claim 12, characterized in that, Both the first mold and the second mold have an array of annular grooves on one side. The array of annular grooves includes multiple interconnected annular grooves, and the portion surrounded by each annular groove forms a carrier structure. The step of separating the first mold and the second mold to obtain the optical lens further includes: Separating the first mold and the second mold yields an optical lens array, wherein the optical lens array comprises multiple optical lenses; The method further includes: Manufacturing the first and second optical lens arrays; The method of connecting and fixing multiple optical lens shielding components to form a wafer-level optical module further includes: Screen-printed adhesive for shielding components of multiple optical lenses in an optical lens array; The shielding components of multiple optical lenses in the first optical lens array are bonded and fixed to the shielding components of multiple optical lenses in the second optical lens array to form a wafer-level optical module array. The wafer-level optical module array is cut to obtain multiple wafer-level optical modules.

14. A wafer-level optical module, characterized in that, The wafer-level optical module is obtained using the manufacturing method of the wafer-level optical module as described in claim 12 or 13.

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