Wafer-level nanoimprint structure of optical array lens
By setting an annular venting groove around the lens surface of the optical glass lens assembly, the problems of air bubbles and glue overflow in the manufacturing of optical array lenses are solved, improving the optical performance and yield of the lens and reducing production costs.
Patent Information
- Application Number
- CN202423056909.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing technologies struggle to effectively prevent air bubbles and glue overflow in the manufacture of optical array lenses, leading to decreased optical performance, reduced yield, and increased manufacturing costs.
Several annular venting grooves are set around the lens surface of the optical glass lens assembly to serve as channels for gas escape. The distribution of adhesive is controlled by dispensing and imprinting technology to ensure tight bonding and stability.
It effectively reduces air bubble buildup, prevents glue overflow, improves the optical performance and yield of lenses, and reduces production costs.
Smart Images
Figure CN223513435U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the precision manufacturing technical field of optical device, concretely is a wafer level nanoimprint structure of optical array lens. BACKGROUND
[0002] The manufacture of optical array lens is a complex and delicate process that requires extremely high precision and strict quality control to ensure the optical performance and reliability of the final product. The core of this manufacturing process lies in precisely replicating fine micro-nano patterns onto optical glass substrates using a precisely designed imprint mold. This process involves the precision of the mold, the uniformity of the material, and the precise control of the imprint parameters. Subsequently, through the dispensing process, the optical glass with the replicated pattern is bonded with another optical glass with a specific optical surface type to form a complete optical array lens. This step not only requires the uniformity and precision of dispensing, but also needs to ensure the close fit between the two optical glasses to avoid loss of optical performance.
[0003] However, in actual operation, this process often faces a series of technical challenges, the most prominent of which is the problem of bubbles and glue overflow. The presence of bubbles can seriously damage the optical uniformity of the lens, leading to light scattering and a decrease in optical performance. Glue overflow may contaminate the lens surface, affecting light transmission and aesthetics, and even causing the lens to be scrapped. These technical challenges not only reduce the yield of the product, increase the manufacturing cost, but also may cause irreversible damage to the optical performance of the final lens.
[0004] In view of these technical challenges, existing technologies have proposed some solutions, but there are still some drawbacks. For example, for the bubble problem, some methods use vacuum treatment or ultrasonic vibration to remove bubbles, but these methods may introduce new contamination or damage the surface of the optical glass. In addition, these methods have limited effect on the removal of small bubbles, and it is difficult to completely solve the bubble problem. For the glue overflow problem, some methods control the amount of glue by optimizing the dispensing parameters or using precise dispensing equipment, but these methods often require high-precision equipment and complex operation processes, increasing the manufacturing cost and difficulty. UTILITY MODEL CONTENTS
[0005] In order to overcome the defects existing in the prior art, the purpose of the utility model is to provide a wafer level nanoimprint structure of optical array lens to solve the technical problem of how to avoid the generation of bubbles and glue overflow in the prior art.
[0006] The utility model is realized by the following technical solutions:
[0007] A wafer level nanoimprint structure of optical array lens, comprising a first optical glass lens assembly and a second optical glass lens assembly;
[0008] The lens face type of the first optical glass lens assembly and the second optical glass lens assembly is bonded by bonding glue;
[0009] The lens face type of the first optical glass lens assembly and the second optical glass lens assembly is bonded by bonding glue;
[0010] Preferably, the first optical glass lens assembly comprises a first optical glass and a first lens model;
[0011] The first optical glass and the first lens model are connected by dispensing and embossing;
[0012] The first lens model is provided with a first lens face type; and the plurality of annular exhaust grooves are arranged around the first lens face type.
[0013] Further, the plurality of annular exhaust grooves comprise a first lens model first exhaust groove and a first lens model second exhaust groove;
[0014] The annular inner diameter of the first lens model first exhaust groove is greater than the inner diameter of the first lens face type, and the annular inner diameter of the first lens model first exhaust groove is smaller than the annular inner diameter of the first lens model second exhaust groove.
[0015] Further, the annular structure of the first lens model first exhaust groove and the first lens model second exhaust groove includes but is not limited to a circle, a rectangle or a diamond.
[0016] Further, the depth of the first lens model first exhaust groove and the first lens model second exhaust groove ranges from 10 to 30 μm; and the width ranges from 10 to 20 μm.
[0017] Preferably, the second optical glass lens assembly comprises a second optical glass and a second lens model;
[0018] The second optical glass and the second lens model are connected by dispensing and embossing;
[0019] The second lens model is provided with a second lens face type; and the plurality of annular exhaust grooves are arranged around the second lens face type.
[0020] Further, the plurality of annular exhaust grooves comprise a second lens model first exhaust groove and a second lens model second exhaust groove;
[0021] The annular inner diameter of the second lens model first exhaust groove is greater than the inner diameter of the second lens face type, and the annular inner diameter of the second lens model first exhaust groove is smaller than the annular inner diameter of the second lens model second exhaust groove.
[0022] Further, the annular structure of the first exhaust groove and the second exhaust groove of the second lens model includes but is not limited to a circle, a rectangle or a diamond.
[0023] Further, the depth of the first exhaust groove and the second exhaust groove of the second lens model ranges from 10 to 30 μm; the width ranges from 10 to 20 μm.
[0024] Preferably, the lens face type of the first optical glass lens assembly and the second optical glass lens assembly includes a concave mirror or a convex mirror.
[0025] Compared with the prior art, the utility model has the following beneficial technical effects:
[0026] The utility model provides a wafer level nanoimprint structure of optical array lens, through using bonding glue to carry out relative bonding setting at the lens face type side of the first optical glass lens assembly and the second optical glass lens assembly, can effectively enhance the bonding strength between two components. A plurality of annular exhaust grooves are arranged around the lens face type of the first optical glass lens assembly and the second optical glass lens assembly, can significantly optimize the exhaust effect. In the bonding process, these exhaust grooves can be used as the channel of gas escape, effectively reduce the accumulation of bubbles between the lens assemblies.
[0027] Further, the first optical glass and the first lens model and the second optical glass and the second lens model are connected by dispensing imprint, this connection mode not only ensures the close fit between two, also improves the accuracy and stability of connection. Dispensing imprint technology can control the distribution and solidification process of glue, thereby avoiding the problems such as glue overflow or uneven solidification, guaranteeing the manufacturing quality of lens assembly. A plurality of annular exhaust grooves are arranged around the first lens face type and the second lens face type, play a key exhaust role in the lens manufacturing process. These exhaust grooves provide effective escape channels for gas, reduce the accumulation of bubbles in the lens, thereby avoiding the adverse effects of bubbles on the optical performance of the lens. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 It is wafer level nanoimprint structure schematic diagram in the utility model embodiment;
[0029] Figure 2 It is the first lens model's plan view in the utility model embodiment;
[0030] In the figure: 1, first optical glass lens assembly; 2, second optical glass lens assembly; 3, bonding glue; 11, first optical glass; 12, first lens model; 21, second optical glass; 22, second lens model; 121, first lens model first exhaust groove; 122, first lens model second exhaust groove; 123, first lens face type; 211, second lens model first exhaust groove; 212, second lens model second exhaust groove; 213, second lens face type. DETAILED DESCRIPTION
[0031] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.
[0032] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, products or devices.
[0033] The purpose of the present application is to provide a wafer-level nanoimprint structure of an optical array lens, to solve the technical problem of how to avoid the generation of bubbles and glue overflow in the prior art.
[0034] The present application will be described in further detail below in conjunction with the drawings:
[0035] Reference is made to Figure 1 and Figure 2The utility model discloses an optical array lens wafer level nanoimprint structure, including first optical glass lens subassembly 1 and second optical glass lens subassembly 2, the lens face type side of first optical glass lens subassembly 1 and second optical glass lens subassembly 2 is bonded by bonding glue 3 relative bonding arrangement, the lens face type of first optical glass lens subassembly 1 and second optical glass lens subassembly 2 is correspondingly provided with several annular exhaust groove around lens model respectively, bonding glue 3 is located between several annular exhaust groove.
[0036] Specifically, the first optical glass lens subassembly 1 includes a first optical glass 11 and a first lens model 12; the first optical glass 11 and the first lens model 12 are connected by dispensing imprint; the first lens model 12 is provided with a first lens face type 123; the several annular exhaust grooves are arranged around the first lens face type 123.
[0037] Among them, the several annular exhaust grooves include a first lens model first exhaust groove 121 and a first lens model second exhaust groove 122; the annular inner diameter of the first lens model first exhaust groove 121 is greater than the inner diameter of the first lens face type 123, and the annular inner diameter of the first lens model first exhaust groove 121 is less than the annular inner diameter of the first lens model second exhaust groove 122.
[0038] Among them, the annular structure of the first lens model first exhaust groove 121 and the first lens model second exhaust groove 122 includes but is not limited to circle, rectangle or diamond. The depth of the first lens model first exhaust groove 121 and the first lens model second exhaust groove 122 ranges from 10 to 30 μm; the width ranges from 10 to 20 μm.
[0039] Specifically, the second optical glass lens subassembly 2 includes a second optical glass 21 and a second lens model 22; the second optical glass 21 and the second lens model 22 are connected by dispensing imprint; the second lens model 22 is provided with a second lens face type 213; the several annular exhaust grooves are arranged around the second lens face type 213.
[0040] Among them, the several annular exhaust grooves include a second lens model first exhaust groove 211 and a second lens model second exhaust groove 212; the annular inner diameter of the second lens model first exhaust groove 211 is greater than the inner diameter of the second lens face type 213, and the annular inner diameter of the second lens model first exhaust groove 211 is less than the annular inner diameter of the second lens model second exhaust groove 212.
[0041] The annular structure of the second lens model first exhaust groove 211 and the second lens model second exhaust groove 212 includes but is not limited to a circle, a rectangle or a diamond. The depth of the second lens model first exhaust groove 211 and the second lens model second exhaust groove 212 ranges from 10 to 30 microns; the width ranges from 10 to 20 microns.
[0042] In this embodiment, a plurality of annular exhaust grooves are provided around each lens face type, and these exhaust grooves include exhaust grooves with different inner diameters. The design of these exhaust grooves helps to remove gas during the manufacturing process and reduces the formation of bubbles. The annular structure of the exhaust grooves can be circular, rectangular or diamond-shaped, etc. The specific shape can be selected according to actual needs. The depth and width of the exhaust grooves are also carefully designed to ensure effective exhaust effect.
[0043] Specifically, the lens face type of the first optical glass lens assembly 1 and the second optical glass lens assembly 2 includes a concave mirror or a convex mirror. Each lens assembly is provided with a lens model on the lens face type, and these face types determine the optical performance of the lens.
[0044] The wafer-level nanoimprint structure of the optical array lens provided by the utility model, in the manufacturing process, first, a plurality of annular exhaust grooves are provided on the imprint mold, and a pattern face mold is arranged in the plurality of annular exhaust grooves, the pattern face mold and the plurality of annular exhaust grooves are replicated on the optical glass by using point gluing, and the point gluing machine draws glue around the pattern face mold, when the two pieces of optical glass are bonded, the bubbles and excess glue generated by the flow of glue will be discharged into the exhaust groove. These exhaust grooves provide an escape channel for gas, thereby reducing the accumulation of bubbles inside the lens.
[0045] When the glue begins to solidify, the gas generated by the chemical reaction and the air inside the lens assembly will gradually be discharged through the exhaust groove. Due to the reasonable design of the exhaust groove, the gas can smoothly escape, thereby avoiding the retention of bubbles inside the lens.
[0046] By optimizing the exhaust effect, the adverse effects of bubbles on the optical performance of the lens are reduced. This helps to improve the transmittance, clarity and imaging quality of the lens. At the same time, the precise manufacturing process and optimized structure design also ensure the high precision and stability of the lens assembly.
[0047] In summary, the wafer-level nanoimprint structure of the optical array lens is provided, and the lens face type sides of the first optical glass lens assembly and the second optical glass lens assembly are relatively bonded by using bonding glue, so that the bonding strength between the two assemblies can be effectively enhanced. A plurality of annular exhaust grooves are arranged around the lens face type of the first optical glass lens assembly and the second optical glass lens assembly, so that the exhaust effect can be significantly optimized. During the bonding process, the exhaust grooves can serve as channels for gas escape, effectively reducing the accumulation of bubbles between the lens assemblies. Compared with no groove or single groove, the problems of bubbles and glue overflow can be effectively prevented, the bonding yield is improved, and the production cost is reduced.
[0048] The optical array lens of the wafer-level nanoimprint structure can be widely applied to various optical systems, such as camera lenses, microscopes, telescopes, etc. The high precision, high stability and good optical performance of the lens assembly make it have a broad application prospect in the optical field.
[0049] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit it, although the present application has been described in detail with reference to the above examples, those skilled in the art should understand that: the specific embodiments of the present application can still be modified or replaced, without departing from the spirit and scope of the present application, any modification or equivalent replacement, which should be covered in the protection scope of the claims of the present application.
Claims
1. A wafer-level nanoimprint structure for an optical array lens, characterized in that, It includes a first optical glass lens assembly (1) and a second optical glass lens assembly (2); The lens surfaces of the first optical glass lens assembly (1) and the second optical glass lens assembly (2) are bonded to each other by bonding adhesive (3); The lens surfaces of the first optical glass lens assembly (1) and the second optical glass lens assembly (2) are respectively provided with a plurality of annular venting grooves around the lens model, and the bonding adhesive (3) is located between the plurality of annular venting grooves.
2. The wafer-level nanoimprint structure of an optical array lens according to claim 1, characterized in that, The first optical glass lens assembly (1) includes a first optical glass (11) and a first lens model (12); The first optical glass (11) and the first lens model (12) are connected by dispensing and pressing. The first lens model (12) is provided with a first lens surface (123); a number of annular exhaust grooves are arranged around the first lens surface (123).
3. The wafer-level nanoimprint structure of an optical array lens according to claim 2, characterized in that, The annular exhaust grooves include a first exhaust groove (121) of the first lens model and a second exhaust groove (122) of the first lens model; The annular inner diameter of the first exhaust groove (121) of the first lens model is larger than the inner diameter of the first lens surface (123), and the annular inner diameter of the first exhaust groove (121) of the first lens model is smaller than the annular inner diameter of the second exhaust groove (122) of the first lens model.
4. The wafer-level nanoimprint structure of an optical array lens according to claim 3, characterized in that, The annular structure of the first exhaust groove (121) of the first lens model and the second exhaust groove (122) of the first lens model includes, but is not limited to, a circle, a rectangle or a rhombus.
5. The wafer-level nanoimprint structure of an optical array lens according to claim 3, characterized in that, The depth range of the first exhaust groove (121) and the second exhaust groove (122) of the first lens model is 10-30 μm; the width range is 10-20 μm.
6. The wafer-level nanoimprint structure of an optical array lens according to claim 1, characterized in that, The second optical glass lens assembly (2) includes a second optical glass (21) and a second lens model (22); The second optical glass (21) and the second lens model (22) are connected by dispensing and pressing. The second lens model (22) is provided with a second lens surface (213); several annular exhaust grooves are arranged around the second lens surface (213).
7. The wafer-level nanoimprint structure of an optical array lens according to claim 6, characterized in that, Several annular exhaust grooves include a first exhaust groove (211) of the second lens model and a second exhaust groove (212) of the second lens model; The annular inner diameter of the first exhaust groove (211) of the second lens model is larger than the inner diameter of the second lens surface (213), and the annular inner diameter of the first exhaust groove (211) of the second lens model is smaller than the annular inner diameter of the second exhaust groove (212) of the second lens model.
8. The wafer-level nanoimprint structure of an optical array lens according to claim 7, characterized in that, The annular structure of the first exhaust groove (211) of the second lens model and the second exhaust groove (212) of the second lens model includes, but is not limited to, a circle, a rectangle or a rhombus.
9. A wafer-level nanoimprint structure for an optical array lens according to claim 7, characterized in that, The depth range of the first exhaust groove (211) of the second lens model and the second exhaust groove (212) of the second lens model is 10-30 μm; the width range is 10-20 μm.
10. The wafer-level nanoimprint structure of an optical array lens according to claim 1, characterized in that, The lens surface of the first optical glass lens assembly (1) and the second optical glass lens assembly (2) includes a concave mirror or a convex mirror.