Optical lens and processing method and processing device thereof

Abstract

The invention relates to the technical field of optical lenses, in particular to an optical lens and a processing method and a processing device thereof, the processing method is used for processing the optical lens, the optical lens is provided with processing surfaces which are oppositely arranged and a lens coating, and the processing method comprises the following steps: cleaning a lens base material for multiple times, and hardening; cleaning the lens base material; the lens base material is placed in a vacuum coating cavity for vacuum coating, and then ion beam bombardment is carried out with argon ions or oxygen ions, so that the front surface of the antireflection film group layer is activated; the anti-fog layer is plated through resistance heat radiation heating evaporation, and film material heating is controlled for film plating; and evaporating the film material of the oil-stain-resistant film layer by adopting an electronic gun to form the oil-stain-resistant film layer. The lens can continuously resist fog, can be washed with water for multiple times, and is good in oil stain resistance, free of antifogging spray, convenient to use and low in cost; the surface hardness is high, the use hardness of the lens can be improved, and the influence of surface scratches on the lens is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of optical lenses, and in particular to an optical lens and a processing method and a processing device thereof. Background Art

[0002] Optical glass is made of high-purity silicon, boron, sodium, potassium, zinc, lead, magnesium, calcium, barium and other oxides mixed according to a specific formula, melted in a platinum crucible at high temperature, stirred evenly with ultrasound to remove bubbles; then slowly cooled for a long time to prevent the glass block from generating internal stress. The cooled glass block must be measured by optical instruments to check whether the purity, transparency, uniformity, refractive index and dispersion rate meet the specifications. Qualified glass blocks are heated and forged to become optical lens blanks.

[0003] The existing announcement number is CN113926774A, and the name is "The present invention relates to the field of optical lens technology, and specifically to an optical lens and its processing method and processing device; the optical lens processing device includes a cleaning box, an ultrasonic generator, a lifting mechanism, a supporting assembly, a motor, a connecting shaft, a placement plate, a pumping mechanism and a nozzle; the lifting mechanism is arranged on the cleaning box, the supporting assembly is arranged on the side of the lifting mechanism, the motor is arranged below the supporting assembly, the connecting shaft and the motor output end are fixedly connected, and the placement plate is fixedly connected below the connecting shaft; the placement plate has a plurality of contoured grooves; the placement plate is used to provide limiting support for the optical lens, and the placement plate is immersed in the cleaning liquid in the cleaning box through the lifting mechanism to perform ultrasonic cleaning on the optical lens; after the optical lens is removed from the cleaning liquid, the cleaning liquid is extracted through the pumping mechanism, and the cleaning liquid is sprayed out through the nozzle to rinse the optical lens, thereby removing impurities attached to the surface of the optical lens.

[0004] However, the above lenses lack coating operations and coating on the lenses after processing to improve lens performance and increase lens service life. Summary of the invention

[0005] The present invention solves the problems in the related art and proposes an optical lens and a processing method and a processing device thereof, aiming to improve the performance of the optical lens and optimize the lens processing technology.

[0006] In order to solve the above technical problems, the present invention is implemented by the following technical solutions: A method for processing an optical lens, for processing an optical lens, wherein the optical lens has a processing surface and a lens coating arranged relatively, comprising the following steps:

[0007] Step A, multiple cleaning of the lens substrate and hardening;

[0008] Step B, cleaning the lens substrate treated in step A;

[0009] Step C, placing the lens substrate cleaned in step B in a vacuum coating chamber for vacuum coating, the vacuum coating process is: setting the coating chamber temperature at 35-55°C, bombarding the lens surface with Ar ion beam for activation, and using an electron gun to evaporate and coat SiO2, ZrO2, SiO2, ZrO2, ITO, Al2O3, SiO2 in sequence to obtain an anti-reflection film layer;

[0010] Step D, bombarding the front surface of the anti-reflection film assembly with argon ions or oxygen ions for 2 to 10 minutes to activate the front surface of the anti-reflection film assembly;

[0011] Step E, using resistance thermal radiation heating to evaporate and plate the anti-fog layer, controlling the heating of the film material to perform the coating, and the evaporation thickness is 10 to 100 nm according to the performance requirements;

[0012] Step F: After evaporating the anti-oil film material using an electron gun, the film material is deposited on the lens substrate of step E in the form of nano-scale molecules under the action of an ion source to form an anti-oil film layer with a thickness of 0.1-600 nm.

[0013] Furthermore, in step A, the lens substrate is immersed in a methyl silicone resin strengthening solution, the hardening treatment temperature is 100-120°C, the treatment time is 1 hour, and after the hardening treatment, the cleaned lens is placed in a dryer at a drying temperature of 90°C for 4-5 hours, and the coating thickness is about 3-5 microns.

[0014] Further, the cleaning process in step B is

[0015] 1) Place various cleaning liquids in the cleaning tank;

[0016] 2) Then put the lens substrate into the cleaning liquid in the cleaning device, turn on the cleaning device to clean the optical lens, and the cleaning time is 5-10 minutes;

[0017] 3) The cleaned optical lens is transferred to another cleaning device for a second cleaning, and the optical lens is taken out after cleaning.

[0018] Furthermore, in step D, the surface of the lens substrate forms alternatingly stacked high refractive index film layers and low refractive index film layers.

[0019] Furthermore, the film material of the oil-proof film layer in step F comprises a mixture of the following components in weight ratio: 60%-80% of magnesium fluoride; 20%-40% of zirconium oxide.

[0020] Furthermore, the lens substrate is molded from a polymer resin.

[0021] An optical lens, wherein the optical lens is manufactured by the optical lens processing method as described in any one of claims 1 to 6.

[0022] Furthermore, the optical lens includes a lens substrate, and both the inner and outer sides of the lens substrate are wrapped with a hardening layer, and the lens substrate also has an anti-reflection film layer, an anti-fog layer, and an anti-oil film layer in sequence outward.

[0023] An optical lens processing device is used for optical lens coating. The processing device includes a vacuum coating machine, and the vacuum coating machine includes a plasma surface activation machine. A plasma nozzle is arranged on one side of the plasma surface activation machine, and the plasma nozzle is installed on a nozzle seat.

[0024] Furthermore, a lens substrate is correspondingly arranged at the front end of the plasma nozzle, a moving device is arranged at the bottom of the lens substrate, and a lens clamp is arranged on the moving device.

[0025] Beneficial effects: The optical lens and preparation method of the present invention have the following advantages:

[0026] 1. The lenses can be continuously anti-fogging and can be washed many times. The lenses have good anti-oil performance, no anti-fogging spray is required, no environmental pollution, easy to use and low cost;

[0027] 2. High surface hardness can improve the hardness of the lens and effectively reduce the impact of surface scratches on the lens;

[0028] 3. The surface is coated with an anti-oil film layer to cover the film layer that has been coated on the surface of the substrate, and can reduce the contact area between water and oil and the lens, making it difficult for oil and water droplets to adhere to the surface of the lens;

[0029] 4. Its anti-reflection film layer can reduce or eliminate the reflected light from optical surfaces such as lenses, prisms, and plane mirrors, thereby increasing the light transmittance of these components and reducing or eliminating the stray light of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the optical lens of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the lens processing device of the present invention.

[0032] In the figure: 1. lens body; S01. anti-oil film layer; S02. anti-fog layer; S03. anti-reflection film group layer; S04. hardening layer; S05. lens substrate; 2. lens clip; 3. moving device; 4. plasma surface activation machine; 5. nozzle seat; 6. plasma nozzle. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0036] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0037] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0038] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0039] A method for processing an optical lens, for processing an optical lens, wherein the optical lens has relatively arranged processing surfaces and lens coatings, comprising the following steps:

[0040] Step A, cleaning the lens substrate multiple times, immersing the lens substrate in a methyl silicone resin strengthening solution, hardening treatment temperature 100-120°C, treatment time 1 hour, after hardening treatment, putting the cleaned lens into the inside of a drying machine, drying temperature 90°C, polymerization 4-5 hours, coating thickness of about 3-5 microns, hardening;

[0041] Step B: clean the lens substrate treated in step A. The cleaning process is:

[0042] 1) Place various cleaning liquids in the cleaning tank;

[0043] 2) Then put the lens substrate into the cleaning liquid in the cleaning device, turn on the cleaning device to clean the optical lens, and the cleaning time is 5-10 minutes;

[0044] 3) The cleaned optical lens is transferred to another cleaning device for a second cleaning, and the optical lens is taken out after cleaning.

[0045] Step C, placing the lens substrate cleaned in step B in a vacuum coating chamber for vacuum coating, the vacuum coating process is: setting the coating chamber temperature at 35-55°C, bombarding the lens surface with Ar ion beam for activation, using an electron gun to evaporate and coat SiO2, ZrO2, SiO2, ZrO2, ITO, Al2O3, SiO2 in sequence to obtain an anti-reflection film group layer; the anti-reflection film system is arranged on at least one surface of the lens substrate, the anti-reflection film system includes a plurality of high refractive index film layers and a plurality of low refractive index film layers, the high refractive index film layers and the low refractive index film layers are alternately stacked, and the anti-reflection film system is in contact with the air. The above resin lens is placed in a vacuum coating machine for coating an anti-fog film, and the specific process is: vacuuming to 1.0*10-5Pa, bombarding the lens surface with ion beams for activation, and coating SiO2, ZrO2, SiO2, ZrO2, ITO, Al2O3, SiO2 in sequence;

[0046] Among them, the reflectivity of the optical lens to light with a wavelength greater than or equal to 600 nanometers and less than or equal to 730 nanometers is less than 2%. The anti-reflection film group layer includes multiple layers, and the anti-reflection film system is arranged in the form of multiple high-refractive index film layers and multiple low-refractive index film layers alternately stacked, which can reduce the reflectivity of the edge of the lens base to light, so as to increase the transmittance of light, thereby increasing the relative illumination, reducing the vignetting phenomenon, and increasing the imaging quality of the optical lens. Reducing the relative illumination can reduce color distortion and avoid the "missing corner" phenomenon where the four corners of the image formed by the optical lens are completely black. The reflectivity of the optical lens to light with a wavelength greater than or equal to 600 nanometers and less than or equal to 730 nanometers is less than 2%, which can increase the imaging quality of the optical lens and reduce color distortion.

[0047] Step D, bombarding with argon ions or oxygen ions for 2 to 10 minutes to activate the front surface of the anti-reflection film assembly, and forming alternating high-refractive index film layers and low-refractive index film layers on the surface of the lens substrate;

[0048] Step E, using resistance thermal radiation heating to evaporate and plate the anti-fog layer, controlling the heating of the film material to perform the coating, and the evaporation thickness is 10 to 100 nm according to the performance requirements;

[0049] Step F, after evaporating the film material of the anti-oil film layer by using an electron gun, the film material is deposited on the lens substrate of step E in the form of nano-scale molecules under the action of an ion source to form an anti-oil film layer, the film material of the anti-oil film layer includes a mixture of the following components in weight ratio: 60%-80% magnesium fluoride; 20%-40% zirconium oxide, the thickness of the anti-oil film layer is 0.1-600nm, the anti-oil film layer can be bidirectionally coated, so that the anti-oil film layer covers the film layer coated on the surface of the substrate, and can reduce the contact area between water and oil and the lens, so that oil and water droplets are not easy to adhere to the lens surface, and double-sided coating can improve the anti-fouling effect of the lens.

[0050] See attached Figure 1 The processing method of the optical lens is used to produce an optical lens, which includes a lens substrate S05, and the inner and outer sides of the lens substrate S05 are wrapped with a hardening layer S04, and the lens substrate S05 is also provided with an anti-reflection film group layer S03, an anti-fog layer S02, and an anti-oil film layer S01 in sequence outward.

[0051] See attached Figure 2 , an optical lens processing device, used for optical lens coating, the processing device includes a vacuum coating machine, and the vacuum coating machine includes a plasma surface activation machine 4, and a plasma nozzle 6 is arranged on one side of the plasma surface activation machine, and the plasma nozzle 6 is installed on the nozzle seat, and a lens body 1 is arranged correspondingly at the front end of the plasma nozzle, and a moving device 3 is arranged at the bottom of the lens body 1, and a lens clamp 2 is arranged on the moving device 3. During the implementation process, the plasma surface activation machine 4 is combined with the vacuum coating machine for coating, wherein the plasma nozzle 6 is arranged inside the cavity of the vacuum coating machine, and the two are used in combination to achieve the coating operation together.

[0052] The steps in implementing ion plating are as follows:

[0053] 1. Prepare the ion source: Use a high-energy ion source to generate an ion beam to perform surface treatment on the material;

[0054] 2. Clean the surface: Before ion bombardment, clean the surface to remove surface impurities and oxides;

[0055] 3. Ion bombardment: Place the lens surface under an ion beam to bombard the surface with ions to increase surface activity;

[0056] 4. Deposition of thin film: while ion bombardment is in progress, the evaporated material or sputtered material is deposited on the lens surface;

[0057] 5. Control the coating speed: According to the coating requirements, control the speed and thickness of the deposited film layer.

[0058] The above are preferred implementation modes of the present invention. Those skilled in the art to which the present invention belongs can also change and modify the above implementation modes. Therefore, the present invention is not limited to the above specific implementation modes. Any obvious improvements, substitutions or modifications made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention.

Claims

1. A method for processing an optical lens, for processing an optical lens, wherein the optical lens has a processing surface and a lens coating arranged opposite to each other, characterized in that: The following steps are involved: Step A, multiple cleaning of the lens substrate and hardening; Step B, cleaning the lens substrate treated in step A; Step C, placing the lens substrate cleaned in step B in a vacuum coating chamber for vacuum coating, the vacuum coating process is: setting the coating chamber temperature at 35-55°C, bombarding the lens surface with Ar ion beam for activation, and using an electron gun to evaporate and coat SiO2, ZrO2, SiO2, ZrO2, ITO, Al2O3, SiO2 in sequence to obtain an anti-reflection film layer; Step D, bombarding the front surface of the anti-reflection film assembly with argon ions or oxygen ions for 2 to 10 minutes to activate the front surface of the anti-reflection film assembly; Step E, using resistance thermal radiation heating to evaporate and plate the anti-fog layer, controlling the heating of the film material to perform the coating, and the evaporation thickness is 10 to 100 nm according to the performance requirements; Step F: After evaporating the anti-oil film material using an electron gun, the film material is deposited on the lens substrate of step E in the form of nano-scale molecules under the action of an ion source to form an anti-oil film layer with a thickness of 0.1-600 nm.

2. The method for processing an optical lens according to claim 1, characterized in that: Step A: Immerse the lens substrate in a methyl silicone resin strengthening solution, harden the lens at a temperature of 100-120°C for 1 hour, and place the cleaned lens into a dryer at a drying temperature of 90°C for 4-5 hours. The coating thickness is about 3-5 microns.

3. The method for processing an optical lens according to claim 2, characterized in that: The cleaning process in step B is as follows: 1) placing various cleaning liquids in the cleaning tank; 2) Then put the lens substrate into the cleaning liquid in the cleaning device, turn on the cleaning device to clean the optical lens, and the cleaning time is 5-10 minutes; 3) The cleaned optical lens is transferred to another cleaning device for a second cleaning, and the optical lens is taken out after cleaning is completed.

4. The method for processing an optical lens according to claim 3, characterized in that: In the step D, the surface of the lens substrate is formed with alternatingly stacked high refractive index film layers and low refractive index film layers.

5. The method for processing an optical lens according to claim 1, characterized in that: The film material of the oil-proof film layer in step F comprises a mixture of the following components in weight ratio: 60%-80% of magnesium fluoride; 20%-40% of zirconium oxide.

6. The method for processing an optical lens according to claim 4, characterized in that: The lens substrate is formed of a polymer resin.

7. An optical lens, characterized in that: The optical lens is manufactured by the optical lens processing method as described in any one of claims 1 to 6.

8. An optical lens according to claim 7, characterized in that: The optical lens comprises a lens substrate, and both the inner and outer sides of the lens substrate are wrapped with a hardening layer, and the lens substrate is also provided with an anti-reflection film layer, an anti-fog layer, and an anti-oil film layer in sequence outward.

9. An optical lens processing device, used for optical lens coating, characterized in that: The processing device comprises a vacuum coating machine, and the vacuum coating machine comprises a plasma surface activation machine, and a plasma nozzle is arranged on one side of the plasma surface activation machine, and the plasma nozzle is installed on a nozzle seat.

10. An optical lens processing device according to claim 9, characterized in that: A lens substrate is correspondingly arranged at the front end of the plasma spray head, a moving device is arranged at the bottom of the lens substrate, and a lens clamp is arranged on the moving device.

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