Camera lens assembly with optical filter with anti-bending structure

Abstract

The utility model discloses a camera lens assembly with an optical filter of an anti-bending structure, which comprises a glass substrate, a coating and a film coating layer, the glass substrate is made of transparent materials, the coating is a silicon oxide mixed coating, the coating is coated on the upper wall of the glass substrate, and the film coating layer is coated on the lower wall of the glass substrate. The two coating layers are respectively arranged at the upper wall position of the coating and the lower wall position of the glass substrate, and each coating layer is formed by alternately overlapping a low-refractive-index film layer and a high-refractive-index film layer; compared with a traditional camera lens only provided with a coating layer, the camera lens has the advantages that the upper wall of the glass substrate is coated with the silicon oxide mixed coating, so that the structural stability of the outward part of the camera lens is improved, and the main factor is that the silicon oxide mixed coating can adopt existing materials such as turbid liquid of silicon dioxide, silicic acid and the like or silica sol and the like; the glass substrate has the characteristics that the glass substrate is a transparent material with better absorptivity, and silicon oxide is arranged in a matrix manner or a fiber structure manner in a coating manner, so that the pulling resistance and the structural flexibility of the glass substrate are improved.

Description

Technical Field

[0001] The utility model relates to the field of camera lens components, in particular to a camera lens component with an anti-bending structure filter. Background Art

[0002] The filter assembly is a component in the camera module. It is an optical device used to select the required radiation band. The filter can achieve special shooting effects to meet the requirements of photography, monitoring, etc. At present, the glass strength, puncture resistance, and bending resistance of IR filters are significantly reduced after coating, silk-screen cutting, etc., and it is necessary to add gaskets during the test process to meet the test requirements. Therefore, the glass strength has always been unstable during the actual test process, affecting the use of the finished product.

[0003] The disadvantages of the prior art are:

[0004] 1. In the coating production process, the mechanical properties of the lens surface and other conditions must be taken into consideration, and the pretreatment time before coating is relatively short. Prolonging the pretreatment time will cause batch defects on the lens surface. While adjusting the pretreatment conditions, the mechanical properties of the lens surface and other conditions may be missing, and the expected effect cannot be achieved;

[0005] 2. After the module is assembled after bonding, the puncture and three-point bending test instrument is used to simulate the extreme state of the camera module in normal use, which fails to achieve the expected effect and affects normal use. Utility Model Content

[0006] The main purpose of the utility model is to propose a camera lens assembly with an anti-bending structure filter, aiming to solve the impact of glass strength problems on the post-module use. Under the condition of not affecting the spectral requirements and film layer requirements, the lens surface is coated before production, which can effectively enhance the glass strength, puncture resistance, anti-bending and other effects.

[0007] To achieve the above-mentioned purpose, the utility model provides a camera lens assembly with an anti-bending structure filter, comprising:

[0008] A glass substrate, wherein the glass substrate is made of a transparent material;

[0009] A coating, wherein the coating is a silicon oxide mixed coating, and the coating is applied to the upper wall of the glass substrate;

[0010] A coating layer, wherein the coating layer has two layers, which are respectively arranged at the upper wall position of the coating layer and the lower wall position of the glass substrate, and the coating layer is formed by alternatingly stacking a low-refractive-index film layer and a high-refractive-index film layer;

[0011] Compared with traditional camera lenses with only a coating layer, the structural stability of the outward part of the camera lens is improved by coating a silicon oxide mixed coating on the upper wall of the glass substrate. The main factor is that the silicon oxide mixed coating can be made of existing materials such as silicon dioxide, silicic acid suspension or silica sol, which should be transparent and have good absorption properties. The silicon oxide is arranged in a matrix or fiber structure by coating, thereby improving the tensile strength and structural flexibility of the glass substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of the interconnection of dot-like coatings;

[0013] Figure 2 It is a schematic diagram of the mutual melting of the edges of the dot-shaped coatings;

[0014] Figure 3 is a schematic diagram of a camera lens;

[0015] Figure 4 A schematic diagram showing a comparison of spectral absorption rates of a camera lens with a coating and a camera lens without a coating;

[0016] Figure 5 Schematic diagram of the comparison of spectral penetration data between a camera lens with a coating and a camera lens without a coating.

[0017] In the figure, 1 is a glass substrate, 11 is a coating layer, and 12 is a coating layer. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0020] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0021] like Figures 1 to 4 As shown, a camera lens assembly with an anti-bending structure filter includes:

[0022] A glass substrate 1, wherein the glass substrate 1 is made of a transparent material;

[0023] A coating 11, wherein the coating 11 is a silicon oxide mixed coating 11, and the coating 11 is applied to the upper wall of the glass substrate 1;

[0024] The coating layer 12 includes two layers, which are respectively arranged on the upper wall of the coating layer 11 and the lower wall of the glass substrate 1. The coating layer 12 is formed by alternating low-refractive index film layers and high-refractive index film layers;

[0025] Compared with the traditional camera lens with only a coating layer 12, the silicon oxide mixed coating 11 is coated on the upper wall of the glass substrate 1, thereby improving the structural stability of the outward part of the camera lens. The main factor is that the silicon oxide mixed coating 11 can be made of existing materials such as suspensions of silicon dioxide, silicic acid or silica sol, and its characteristics should be a transparent and absorbent material. The silicon oxide is arranged in a matrix or fiber structure by coating, thereby improving the tensile strength and structural flexibility of the glass substrate 1.

[0026] Specifically, the coating 11 is sprayed onto the glass substrate in dots by a digital printing device, which is a prior art, and a transparent silicon oxide solution is sprayed in dots to attach to the glass substrate, and the dot-shaped coatings 11 are connected to each other or their boundaries are melted to each other.

[0027] In the embodiment of the utility model, the dot-shaped coatings 11 are connected to each other or the boundaries are melted to each other, that is, they can be completely connected, or gaps or avoidance grooves can be generated, thereby reducing the absorption of light and improving the light transmission.

[0028] Specifically, the coating 11 is applied to the upper wall of the glass substrate by a centrifugal drying machine. The lens to be coated 11 is placed on a sample table (rotating chuck), and the lens is adsorbed on the sample table by a vacuum pump, and then more than 100 ml of dripping liquid is placed in a glass tube. A 2.5 ml syringe pump can be used to quantitatively discharge the silicon oxide mixed coating 11 liquid to drip onto the lens surface, and the silicon oxide mixed coating 11 liquid is evenly attached to the lens surface by the centrifugal drying effect.

[0029] The particle size of the coating 11 is 0.45um to 0.8um. ​​The lens surface is coated with coating 11 using a spin coating device before production. The coating 11 needs to be filtered with a 0.45um to 0.8um filter to prevent large particles from affecting the spectrum of the predetermined band.

[0030] The coating layer 12 is formed by evaporation on the upper wall of the coating 11 or the lower wall of the glass substrate 1. The coating is evaporated by the Guangchi OTFC-1550-IBS equipment. In order to ensure the tightness of the coating 11 and the evaporated layer structure, the OIS-Three 23cm RF ION Source parameter of the evaporation equipment is adjusted from 600v-600v to 500v-500v during the evaporation. After the coating is completed, the lens strength is verified after screen printing, cutting, and lamination. The data comparison greatly enhances the glass strength, puncture resistance, bending resistance and other effects.

[0031] The coating 11 is baked in a nitrogen oven and maintained at 100° for 120 minutes to dry the solution in the particles.

[0032] The coating 11 solution is a UV solution, and the UV solution is shaped by UV lamp irradiation. Baking is preferred, and filtering of ultraviolet rays is required in some spectra.

[0033] In the embodiment of the present invention, the glass substrate 1 having the coating layer 11 and the coating layer 12 has a spectral absorption rate of 91%-92% in the 400-1100 wavelength band.

[0034] in Figure 4 There are two line segments, the starting point is the structure with coating 11 at the top, and the starting point is the structure without coating 11 at the bottom. It can be obtained that the spectrum of the structure with coating 11 is still in the range of 91%-92% compared with the absorption of the structure without coating;

[0035] Figure 5 There are two line segments, the starting point at the top is a coated structure, and the starting point at the bottom is an uncoated structure. Through the test of three fulcrums, it can be clearly found that its compressive resistance effect is significantly increased.

[0036] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A camera lens assembly with an anti-bending structure filter, characterized in that: include: A glass substrate, wherein the glass substrate is made of a transparent material; A coating, wherein the coating is a silicon oxide mixed coating, and the coating is applied to the upper wall of the glass substrate; The coating layer comprises two layers which are respectively arranged at the upper wall position of the coating layer and the lower wall position of the glass substrate. The coating layer is formed by alternatingly stacking low-refractive index film layers and high-refractive index film layers.

2. The camera lens assembly with an anti-bending structure filter as claimed in claim 1, characterized in that: The coating is sprayed onto the glass substrate in a dotted form by a digital printing device.

3. The camera lens assembly with an anti-bending structure filter as claimed in claim 2, characterized in that: The dot coatings are connected to each other or the boundaries are fused to each other.

4. The camera lens assembly with an anti-bending structure filter as claimed in claim 1, characterized in that: The coating is coated on the upper wall of the glass substrate by a centrifugal dryer.

5. The camera lens assembly with an anti-bending structure filter as claimed in claim 1, characterized in that: The particle size of the coating is 0.45um to 0.8um.

6. The camera lens assembly with an anti-bending structure filter as claimed in claim 1, characterized in that: The coating layer is formed on the upper wall of the coating or the lower wall of the glass substrate by evaporation.

7. The camera lens assembly with an anti-bending structure filter as claimed in claim 1, characterized in that: The coating is baked in a nitrogen oven.

8. The camera lens assembly with an anti-bending structure filter as claimed in claim 1, characterized in that: The coating solution is a UV solution, and the UV solution is shaped by irradiation of a UV lamp.

9. The camera lens assembly with an anti-bending structure filter as claimed in claim 1, characterized in that: The glass substrate with the coating and the film layer has a spectral absorption rate of 91%-92% in the 400-1100 wavelength band.

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