Optical lens module

Abstract

The utility model relates to an optical lens module, including protection glass and optical lens, protection glass includes: glass substrate department, sets up in the object side of optical lens, the image side surface of glass substrate department is at least partly with the object side surface of optical lens contact setting, fixed part, sets up on the image side surface of glass substrate department, fixed part sets up on the outside surface of optical lens, fixed part is at least partly with the outside surface of optical lens cooperation, the utility model discloses, the structure of protection glass and optical lens is designed to make protection glass directly with optical lens fixed connection, improves the assembly effect of protection glass and optical lens, is favorable to optimization protection glass and the space structure between optical lens, reduces the whole machine thickness, improves the assembly accuracy of optical lens module.

Description

Technical Field

[0001] This utility model relates to the field of imaging lens technology, and in particular to an optical lens module. Background Technology

[0002] With the advancement and development of the mobile phone industry and smart wearable devices, consumers' demand for thinner, lighter, and more portable products is increasing. Under this trend, the camera module, as a crucial optical component, requires optimized design and innovative spatial structure to enhance overall product competitiveness. To achieve thinner and lighter products, camera module design must continuously break through traditional frameworks to meet the market's pursuit of ultimate thinness and lightness.

[0003] Conventional camera modules typically use an external glass plate to protect the optical lens. While this design provides some protection against water, dust, and dirt, its modular assembly method introduces several problems. First, the increased space between the two components directly increases the overall thickness of the device, contradicting consumer demand for a slim and lightweight design. Second, it's often difficult to achieve perfect parallelism between the glass plate and the optical axis of the lens, resulting in some degree of tilt and parallelism deviation. This deviation not only affects the direction of light transmission and refraction, leading to decreased image quality, but can also cause aberrations, distortions, and other optical problems, ultimately impacting overall optical performance.

[0004] Therefore, how to further optimize the spatial structure, reduce the overall thickness, and improve the assembly precision while ensuring optical performance has become a key issue that needs to be addressed in camera module design. Summary of the Invention

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide an optical lens module that optimizes the spatial structure and assembly method, reduces the overall thickness, and improves assembly accuracy.

[0006] To achieve the above-mentioned objectives, this utility model provides an optical lens module, comprising a protective glass and an optical lens; the protective glass comprises:

[0007] A glass substrate portion is disposed on the object side of the optical lens; the image side of the glass substrate portion is at least partially in contact with the object side of the optical lens.

[0008] A fixing part is disposed on the image-side surface of the glass substrate portion; the fixing part is disposed on the outer surface of the optical lens; the fixing part at least partially engages with the outer surface of the optical lens.

[0009] According to one technical solution of this utility model, the protective glass satisfies the following:

[0010] 0.5mm <L1<1mm;

[0011] Wherein, L1 is the thickness of the glass substrate portion.

[0012] According to one technical solution of this utility model, the protective glass satisfies the following:

[0013] 0.5mm <L2<1mm;

[0014] Wherein, L2 is the thickness of the fixing part.

[0015] According to one technical solution of this utility model, the protective glass satisfies the following:

[0016] 1.5mm <L3<2mm;

[0017] 1mm <L4<1.5mm;

[0018] Wherein, L3 is the height of the protective glass, and L4 is the mating length of the fixing part that mates with the optical lens.

[0019] According to one technical solution of this utility model, the outer surface of the optical lens is provided with stepped surfaces arranged sequentially from the object side to the image side along the optical axis; the protective glass is disposed on the stepped surface, the stepped surface includes a longitudinal stepped surface and a transverse stepped surface, the longitudinal stepped surface is used to cooperate with the inner surface of the fixing part; the transverse stepped surface is used to cooperate with the object side of the fixing part.

[0020] According to one technical solution of this utility model, the fixing part and the optical lens are fixed by dispensing adhesive, and the inner side of the fixing part is fixed to the longitudinal step surface and the image side of the fixing part is fixed to the transverse step surface by adhesive.

[0021] According to one technical solution of this utility model, the protective glass satisfies the following:

[0022] 0.05 <L5<0.1mm;

[0023] 0.05 <L6<0.1mm;

[0024] Wherein, L5 is the thickness of the adhesive between the inner side of the fixing part and the longitudinal step surface, and L6 is the thickness of the adhesive between the image side of the fixing part and the transverse step surface.

[0025] According to one technical solution of this utility model, the fixing part and the optical lens are fixed by threaded fastening, and the inner side surface of the fixing part and the longitudinal step surface are provided with threads.

[0026] According to one technical solution of this utility model, the protective glass satisfies: L7 > 0.05 mm;

[0027] Wherein, L7 is the distance between the image side of the fixing part and the transverse step surface.

[0028] According to one technical solution of this utility model, the protective glass satisfies: P > 0.3 mm;

[0029] Wherein, P is the pitch of the thread.

[0030] According to one technical solution of this utility model, the glass substrate portion and the fixing portion are integrally disposed.

[0031] The beneficial effects of this utility model are:

[0032] This invention relates to an optical lens module comprising a protective glass and an optical lens. By optimizing the structural design of the protective glass and the optical lens, the image-side of the glass substrate is at least partially in contact with the object-side of the optical lens. This reduces the overall thickness while ensuring good parallelism between the protective glass and the optical lens, solving the problems of excessive overall thickness caused by conventional split structures and parallelism deviations during assembly. In this invention, the fixing part at least partially mates with the outer surface of the optical lens, enabling direct assembly of the protective glass and the optical lens, reducing assembly steps and effectively improving the assembly precision of the optical lens module. Attached Figure Description

[0033] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0034] Figure 1 This diagram illustrates the structure of an optical lens module in the prior art.

[0035] Figure 2 A schematic diagram of the structure of an optical lens module according to the present invention is shown;

[0036] Figure 3 A schematic diagram of the structure of an optical lens module according to Embodiment 1 of the present invention is shown;

[0037] Figure 4 The diagrams show the structure of an optical lens module according to Embodiment 2 of the present invention.

[0038] Among them, the correspondence between the component names and the reference numerals is as follows:

[0039] 1. Protective glass; 2. Optical lens; 3. Adhesive

[0040] 11. Glass substrate part; 12. Fixing part;

[0041] 21. Longitudinal stepped surface; 22. Transverse stepped surface. Specific embodiments

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings required for use in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0043] When describing the embodiments of the present invention, the orientation or positional relationship expressed by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" is based on the orientation or positional relationship shown in the relevant accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention.

[0044] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is at least convex in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is at least concave in the paraxial region. The surface of each lens closest to the object is called the object side surface of the lens, and the surface of each lens closest to the imaging side is called the image side surface of the lens.

[0045] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments cannot be enumerated here one by one, but the embodiments of the present invention are not limited to the following embodiments.

[0046] Figure 1 Exemplarily, it shows a schematic structural diagram of an optical lens module in the prior art. The conventional design of the optical lens module in the prior art is that the distance between the object side surface of the lens and the protective glass is 0.7 < L < 1.0 mm. The space distance between the protective glass and the lens increases, thereby increasing the thickness of the whole machine. And because the protective glass and the lens are designed separately, there is an easy problem of parallelism between the protective glass and the lens during the assembly process, which affects the imaging effect of the lens module.

[0047] As shown Figure 2 in the figure Figure 2 exemplarily shows an optical lens module of the present utility model, including a protective glass 1 and an optical lens 2. The optical lens 2 includes a lens barrel and a lens disposed in the accommodation space inside the lens barrel. The protective glass 1 is disposed on the object side of the optical lens 2. The protective glass 1 includes a glass substrate portion 11 and a fixing portion 12. The glass substrate portion 11 is disposed on the object side of the optical lens 2, and at least part of the image side surface of the glass substrate portion 11 is directly in contact with the object side surface of the lens barrel. The fixing portion 12 is disposed on the image side surface of the glass substrate portion 11. The fixing portion 12 is disposed on the outer side surface of the optical lens 2, and at least part of the fixing portion 12 cooperates with the outer side surface of the optical lens 2 to realize the fixed connection between the protective glass 1 and the optical lens 2. The protective glass 1 is directly connected to the optical lens 2, having good assembly characteristics. At the same time, the distance between the protective glass and the optical lens is compressed, realizing the optimization of the spatial structure of the protective glass and the optical lens, which is beneficial to reducing the thickness of the whole machine and realizing the miniaturization of the module.

[0048] In some embodiments of the present utility model, the protective glass 2 satisfies: 0.5mm < L1 < 1mm; where L1 is the thickness of the glass substrate portion 11. By defining the thickness of the glass substrate portion 11, it is beneficial to further reduce the thickness of the whole optical module.

[0049] In some embodiments of the present utility model, the protective glass 2 satisfies: 0.5mm < L2 < 1mm; where L2 is the thickness of the fixing portion 12. Through the thickness of the fixing portion 12, it is ensured that the protective glass 1 has good structural strength and avoids cracking of the protective glass 1.

[0050] In some embodiments of the present utility model, the protective glass 2 satisfies: 1.5mm < L3 < 2mm; 1mm < L4 < 1.5mm; L3 is the height of the protective glass 1, and L4 is the fitting length of the fixing portion 12 that cooperates with the optical lens 2. The height of the protective glass 1 is defined as the distance on the optical axis from the object side surface of the protective glass 1 to the image side surface of the protective glass 1. By defining the height of the protective glass 1 and the fitting length of the fixing portion 12 that cooperates with the optical lens 2, while reducing the thickness of the whole machine, it is ensured that the protective glass 1 and the optical lens 2 maintain a good connection, improving the overall structural strength of the optical lens module.

[0051] By optimizing the structural design of the protective glass, the thickness of the whole machine is effectively reduced, solving the problem of excessive thickness of the whole machine caused by the conventional split structure; at the same time, the assembly process is reduced, avoiding the problem of parallelism deviation existing in the assembly, and effectively improving the assembly accuracy.

[0052] As shown Figure 3As shown, in some embodiments of the present utility model, the outer side surface of the optical lens 2 is provided with step surfaces arranged in sequence from the object side to the image side along the optical axis of the optical lens module. The step surfaces include a longitudinal step surface 21 and a transverse step surface 22. The longitudinal step surface 21 is used to cooperate with the inner side surface of the fixing part 12, and the transverse step surface 22 is used to cooperate with the object side surface of the fixing part 12. A stepped structure is formed by the longitudinal step surface 21 and the transverse step surface 22, which provides good support for the protective glass and improves the connection strength between the optical lens and the protective glass.

[0053] In some embodiments of the present utility model, the fixing part 12 and the optical lens 2 are fixed by means of dispensing. The inner side surface of the fixing part 12 and the longitudinal step surface 21, and the image side surface of the fixing part 12 and the transverse step surface 22 are fixed by an adhesive. The fixing part 12 and the optical lens 2 are fixed by means of dispensing, and the assembly process is simple and easy to operate.

[0054] In some embodiments of the present utility model, the protective glass 1 satisfies: 0.05 < L5 < 0.1 mm; 0.05 < L6 < 0.1 mm; where L5 is the thickness of the adhesive between the inner side surface of the fixing part 12 and the longitudinal step surface 21, and L6 is the thickness of the adhesive between the image side surface of the fixing part 12 and the transverse step surface 22.

[0055] By limiting the thickness L5 of the adhesive between the inner side surface of the fixing part and the longitudinal step surface and the thickness L6 of the adhesive between the image side surface of the fixing part and the transverse step surface, while ensuring sufficient dispensing area and overflow space, it is ensured that the optical lens module takes into account assembly eccentricity and avoids the problem of parallelism deviation in assembly, thereby effectively improving the assembly accuracy.

[0056] In some embodiments of the present utility model, the fixing part 12 and the optical lens 2 are fixed by means of screw threading. Threads are provided on the inner side surface of the fixing part 12 and the longitudinal step surface 21, and the assembly operation is convenient and simple, and has good reliability.

[0057] In some embodiments of the present utility model, the protective glass 2 satisfies: L7 > 0.05 mm; where L7 is the distance between the image side surface of the fixing part 12 and the transverse step surface 22. By limiting the distance L7 between the image side surface of the fixing part 12 and the transverse step surface 22, it is ensured that the protective glass 1 does not interfere with the step surface of the lens barrel and avoids affecting the assembly of the lens barrel.

[0058] In some embodiments of the present utility model, the protective glass 1 satisfies: P > 0.3 mm; where P is the pitch of the thread. By limiting the thread pitch on the inner side surface of the fixing part 12 and the longitudinal step surface 21, it is ensured that the protective glass has good processability.

[0059] In some embodiments of the present utility model, the glass substrate portion 11 and the fixing portion 12 are integrally provided, ensuring that the protective glass has good integrity, thereby ensuring the installation characteristics of the protective glass 1 and the optical lens.

[0060] The following gives two specific embodiments according to the above settings of the present utility model to specifically illustrate the optical lens module according to the present utility model.

[0061] Embodiment 1

[0062] As Figure 2 and Figure 3 shown, an optical lens module provided in this embodiment includes a protective glass 1 and an optical lens 2. The protective glass 1 and the optical lens 2 are arranged in sequence along the optical axis from the object side to the image side. The protective glass 1 includes an integrally provided glass substrate portion 11 and a fixing portion 12. The glass substrate portion 11 is provided on the object side of the optical lens 2 and is at least partially in direct contact with the object side surface of the optical lens 2. The fixing portion 12 is provided on the side surface of the optical lens 2, and the fixing portion 12 is provided on the image side of the glass substrate portion 11. At least part of the fixing portion 12 cooperates with the side surface of the optical lens 2.

[0063] The protective glass 1 satisfies: 0.5 mm < L1 < 1 mm; 0.5 mm < L2 < 1 mm; 1.5 mm < L3 < 2 mm; 1 mm < L4 < 1.5 mm; where L1 is the thickness of the glass substrate portion 11, L2 is the thickness of the fixing portion 12, L3 is the height of the protective glass 1, and L4 is the mating length of the fixing portion 12 that mates with the optical lens 2. The height of the protective glass 1 is defined as the distance on the optical axis from the object side surface of the protective glass 1 to the image side surface of the protective glass 1.

[0064] The side surface of the optical lens 2 is stepped, including a longitudinal stepped surface 21 that mates with the inner side surface of the fixing portion 12 and a transverse stepped surface 22 that mates with the object side surface of the fixing portion 12. The fixing between the fixing portion 11 and the optical lens 2 is achieved by dispensing glue.

[0065] When assembling the protective glass 1 and the optical lens 2, first, an adhesive 3 is coated on the inner side surface and the object side surface of the fixing portion 12. The thickness of the adhesive 3 satisfies: 0.05 < L5 < 0.1 mm; 0.05 < L6 < 0.1 mm; where L5 is the thickness of the adhesive 3 between the inner side surface of the fixing portion and the longitudinal stepped surface, and L6 is the thickness of the adhesive 3 between the image side surface of the fixing portion and the transverse stepped surface. Then, the adhesive 3 is cured to complete the fixed connection between the protective glass 1 and the optical lens 2.

[0066] Embodiment 2

[0067] As Figure 4 shown, Figure 4This embodiment illustrates an optical lens module. The optical lens module provided in this embodiment includes a protective glass 1 and an optical lens 2. The protective glass 1 and the optical lens 2 are arranged sequentially along the optical axis from the object side to the image side. The protective glass 1 includes an integrally formed glass substrate portion 11 and a fixing portion 12. The glass substrate portion 11 is disposed on the object side of the optical lens 2, and the fixing portion 12 is disposed on the side surface of the optical lens 2. The fixing portion 12 is disposed on the image side of the glass substrate portion 11. The fixing portion 12 at least partially engages with the side surface of the optical lens 2.

[0068] The difference between the optical lens module in this embodiment 2 and the optical lens module provided in the embodiment is that the optical lens module provided in this embodiment 2 uses a screw thread locking method to fix the fixing part 12 and the optical lens 2. At the same time, the locking screw thread size satisfies: L7>0.05mm; P>0.3mm; where L7 is the distance between the image side surface of the fixing part and the transverse step surface; P is the screw thread pitch.

[0069] When assembling the protective glass 1 and the optical lens 2, the protective glass 1 is placed on the object side of the optical lens 2 and tightened. The protective glass 1 and the optical lens 2 are fixedly connected by the thread engagement between the protective glass 1 and the optical lens 2.

[0070] The above description is merely a preferred embodiment of this utility model and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of this invention is not limited to the specific combination of the above-described technical features, but also includes other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this utility model.

Claims

1. An optical lens module comprising a protection glass and an optical lens; characterized in that, The protective glass includes: A glass substrate portion is disposed on the object side of the optical lens; the image side of the glass substrate portion is at least partially in contact with the object side of the optical lens. A fixing part is disposed on the image-side surface of the glass substrate portion; the fixing part is disposed on the outer surface of the optical lens; the fixing part at least partially engages with the outer surface of the optical lens.

2. The optical lens module according to claim 1, characterized in that, The protective glass satisfies: 0.5mm <L1<1mm; Wherein, L1 is the thickness of the glass substrate portion.

3. The optical lens module according to claim 1, characterized in that, The protective glass satisfies: 0.5mm <L2<1mm; Wherein, L2 is the thickness of the fixing part.

4. The optical lens module according to claim 1, characterized in that, The protective glass satisfies: 1.5mm <L3<2mm; 1mm <L4<1.5mm; Wherein, L3 is the height of the protective glass, and L4 is the mating length of the fixing part that mates with the optical lens.

5. The optical lens module according to any one of claims 1 to 4, characterized in that, The outer surface of the optical lens is provided with stepped surfaces arranged sequentially from the object side to the image side along the optical axis. The protective glass is disposed on the stepped surfaces. The stepped surfaces include longitudinal stepped surfaces and transverse stepped surfaces. The longitudinal stepped surfaces are used to cooperate with the inner surface of the fixing part; the transverse stepped surfaces are used to cooperate with the object side of the fixing part.

6. The optical lens module according to claim 5, characterized in that, The fixing part is fixed to the optical lens by dispensing adhesive, and the inner side of the fixing part is fixed to the longitudinal step surface and the image side of the fixing part is fixed to the transverse step surface by adhesive.

7. The optical lens module according to claim 6, characterized in that, The protective glass satisfies: 0.05 <L5<0.1mm; 0.05 <L6<0.1mm; Wherein, L5 is the thickness of the adhesive between the inner side of the fixing part and the longitudinal step surface, and L6 is the thickness of the adhesive between the image side of the fixing part and the transverse step surface.

8. The optical lens module according to claim 5, characterized in that, The fixing part is fixed to the optical lens by a threaded locking method, and the inner side of the fixing part and the longitudinal step surface are provided with threads.

9. The optical lens module according to claim 8, characterized in that, The protective glass meets the following requirement: L7 > 0.05 mm; Wherein, L7 is the distance between the image side of the fixing part and the transverse step surface.

10. The optical lens module according to claim 8, characterized in that, The protective glass satisfies the following condition: P > 0.3 mm; Wherein, P is the pitch of the thread.

11. The optical lens module according to claim 1, characterized in that, The glass substrate portion is integrally formed with the fixing portion.

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