Chemical treatment method for blackening mobile phone lens module component

Abstract

The invention discloses a chemical treatment method for blackening a mobile phone lens module element in the optical field, which comprises the following steps: step 1), placing a workpiece in a cleaning agent for soaking and washing, and then washing with pure water; (2) under the normal temperature condition, the workpiece is put into an ultrasonic cleaning machine to be cleaned for 5 min, and then the workpiece is washed clean with flowing clear water; (3) washing is conducted again for 2 min through pure water; step 4), under the condition of normal temperature, soaking for 5 minutes by mixing 5% hydrochloric acid with pure water; (5) washing with pure water for 2 minutes; step 6), soaking in Ba-1 liquid medicine for 2 minutes; (7) washing with hot water for 2 minutes; step 8), soaking in H2 liquid medicine for 6 minutes; (9) flushing with hot water at 45 DEG C for 2 minutes; and step 10), spin-drying for 6 minutes through a centrifugal machine. The ultra-low reflectivity of 0.2%-0.3% can be achieved, the low-reflection function is directly achieved in the product, the weight is reduced, and the occupied space is reduced.

Description

Technical Field

[0001] The invention relates to the field of optics, and in particular to a chemical treatment method for blackening components of a mobile phone lens module. Background Art

[0002] At present, the mainstream optical shading sheet material market is PET and PI sheets. Their main advantages are easy molding and the reflectivity is reduced compared to the original material after the surface is treated with a carbon layer. Their disadvantages are poor temperature resistance and difficulty in processing special-shaped surfaces, which makes them easy to deform after ring testing and cannot adapt to the processing needs of various types of special-shaped surfaces.

[0003] With the advancement of science and technology and the improvement of people's quality of life, mobile phones, flat panel lights and portable electronic products have developed rapidly, which has led to an increasing demand for the imaging lenses used therein. The lens generally includes a lens barrel, a lens group assembled in the lens barrel and a shading sheet. The function of the shading sheet is to adjust the luminous flux in the optical system. When external light enters the lens, the shading sheet between the lenses can block the entry of unwanted light.

[0004] The existing mobile phone lens shading process is mostly through spraying or coating. The mobile phone lenses treated by these processes have a high reflectivity, a large weight, and a high space occupancy rate. Therefore, those skilled in the art provide a chemical treatment method for blackening mobile phone lens module components to solve the problems raised in the above background technology. Summary of the invention

[0005] The purpose of the present invention is to provide a chemical treatment method for blackening components of a mobile phone lens module, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The chemical treatment method for blackening of mobile phone lens module components comprises the following steps:

[0008] Step 1) Place the workpiece in a cleaning agent for soaking and washing, and then rinse with pure water;

[0009] Step 2) Place the workpiece in an ultrasonic cleaning machine and clean it for 5 minutes at room temperature, then rinse it with running water;

[0010] Step 3), rinse again with pure water for 2 minutes;

[0011] Step 4), soak in 5% hydrochloric acid and pure water for 5 minutes at room temperature;

[0012] Step 5), rinse with pure water for 2 minutes;

[0013] Step 6), soak in Ba-1 solution for 2 minutes;

[0014] Step 7), rinse with hot water for 2 minutes;

[0015] Step 8), soak in H2 solution for 6 minutes;

[0016] Step 9), rinse with 45°C hot water for 2 minutes;

[0017] Step 10), spin dry in a centrifuge for 6 minutes.

[0018] As a further solution of the present invention: the cleaning agent in step 1) is prepared by mixing KS cleaning agent with pure water in a ratio of 1:1, and the soaking time is 3-4 minutes.

[0019] As a further solution of the present invention: the ratio of hydrochloric acid to pure water in step 4) is 1:20.

[0020] As a further solution of the present invention: the concentration of the Ba-1 solution in step 6) is 18-19° Bé, and the soaking temperature is 81-83°C.

[0021] As a further solution of the present invention: the hot water in step 7) is 40-45°C hot water.

[0022] As a further solution of the present invention: the temperature of the medicine solution in step 8) is 85-88°C, and the concentration of the medicine solution is 23-24°Bé.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention can achieve an extremely low reflectivity of 0.2%-0.3%, and the low reflection function is directly realized in the product itself, thereby reducing weight and occupying less space. DETAILED DESCRIPTION

[0025] The following will be combined with 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, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] In an embodiment of the present invention, a chemical treatment method for blackening components of a mobile phone lens module comprises the following steps:

[0027] Step 1) Place the workpiece in a cleaning agent for soaking and washing, and then rinse with pure water;

[0028] Step 2) Place the workpiece in an ultrasonic cleaning machine and clean it for 5 minutes at room temperature, then rinse it with running water;

[0029] Step 3), rinse again with pure water for 2 minutes;

[0030] Step 4), soak in 5% hydrochloric acid and pure water for 5 minutes at room temperature;

[0031] Step 5), rinse with pure water for 2 minutes;

[0032] Step 6), soak in Ba-1 solution for 2 minutes;

[0033] Step 7), rinse with hot water for 2 minutes;

[0034] Step 8), soak in H2 solution for 6 minutes;

[0035] Step 9), rinse with 45°C hot water for 2 minutes;

[0036] Step 10), spin dry in a centrifuge for 6 minutes.

[0037] After adopting the above technical solution, a layer of oxide film can be formed on the surface of the mobile phone lens. This method can make the surface of the copper product turn black, which plays a role in blocking light (absorbing stray light).

[0038] In this embodiment, the cleaning agent in step 1) is prepared by mixing KS cleaning agent with pure water in a ratio of 1:1, and the soaking time is 3-4 minutes.

[0039] Wherein, the ratio of hydrochloric acid to pure water in step 4) is 1:20.

[0040] Wherein, the concentration of the Ba-1 solution in step 6) is 18-19° Bé, and the soaking temperature is 81-83°C.

[0041] Wherein, the hot water in step 7) is 40-45°C hot water.

[0042] Wherein, the temperature of the medicine solution in step 8) is 85-88°C, and the concentration of the medicine solution is 23-24°Bé.

[0043] In this embodiment, compared with the traditional spraying process, the reflectivity of the prepared lens (oxidized black layer) in different bands is measured, and the data are shown in the following table:

[0044]

[0045]

[0046]

[0047]

[0048]

[0049]

[0050]

[0051]

[0052]

[0053] It can be seen from the table:

[0054] The present invention can achieve an extremely low reflectivity of 0.2%-0.3%, and the low reflection function is directly realized in the product itself, thereby reducing weight and occupying less space.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A chemical treatment method for blackening of mobile phone lens module components, characterized in that: The steps include: Step 1) Place the workpiece in a cleaning agent for soaking and washing, and then rinse with pure water; Step 2) Place the workpiece in an ultrasonic cleaning machine and clean it for 5 minutes at room temperature, then rinse it with running water; Step 3), rinse again with pure water for 2 minutes; Step 4), soak in 5% hydrochloric acid and pure water for 5 minutes at room temperature; Step 5), rinse with pure water for 2 minutes; Step 6), soak in Ba-1 solution for 2 minutes; Step 7), rinse with hot water for 2 minutes; Step 8), soak in H2 solution for 6 minutes; Step 9), rinse with 45°C hot water for 2 minutes; Step 10), spin dry in a centrifuge for 6 minutes.

2. The chemical treatment method for blackening of mobile phone lens module components according to claim 1, characterized in that: The cleaning agent in step 1) is prepared by mixing KS cleaning agent with pure water in a ratio of 1:1, and the soaking time is 3-4 minutes.

3. The chemical treatment method for blackening of mobile phone lens module components according to claim 1, characterized in that: The ratio of hydrochloric acid to pure water in step 4) is 1:

20.

4. The chemical treatment method for blackening of mobile phone lens module components according to claim 1, characterized in that: The concentration of the Ba-1 solution in step 6) is 18-19° Bé, and the soaking temperature is 81-83°C.

5. The chemical treatment method for blackening of mobile phone lens module components according to claim 1, characterized in that: The hot water in step 7) is 40-45°C hot water.

6. The chemical treatment method for blackening of mobile phone lens module components according to claim 1, characterized in that: The temperature of the medicine solution in step 8) is 85-88°C, and the concentration of the medicine solution is 23-24°Bé.

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