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A kind of manufacturing method of electromagnetic shielding optical window

An electromagnetic shielding and manufacturing method technology, applied in the field of optical windows, can solve the problems of reducing the light transmission performance and electromagnetic shielding performance of the optical window, uneven distribution of high-order diffraction energy, reducing the light transmission performance of the optical window, etc., so as to achieve good electromagnetic shielding. performance, good light transmission performance, the effect of improving light transmission performance

Active Publication Date: 2017-07-04
哈尔滨时代仪器设备有限公司
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Problems solved by technology

[0009] In view of the above-mentioned shortcomings and deficiencies, the present invention discloses a method for manufacturing an electromagnetic shielding optical window. This method not only avoids the use of titanium dioxide solution, avoids the problem of reducing the light transmission performance of the optical window due to the increase of the metal line width, but also does not need to use mechanical friction. The method removes the template, avoids the traditional mechanical friction method and reduces the light transmission performance and electromagnetic shielding performance of the optical window at the same time, and also provides specific processing conditions that can solve the problem of uneven distribution of high-order diffraction energy, so that the electromagnetic shielding optical window produced by the method of the present invention The window not only has good electromagnetic shielding performance, but also achieves the effect of no obvious diffraction when solving the problem of uneven distribution of high-order diffraction energy, and has good light transmission performance

Method used

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  • A kind of manufacturing method of electromagnetic shielding optical window

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specific Embodiment 1

[0040] The manufacturing method of the electromagnetic shielding optical window of the present embodiment, the flowchart is as follows figure 1 As shown, the method includes the following steps:

[0041] In step a, first drop-coat a masking liquid on the upper surface of the flat substrate 11, the masking liquid is cracked nail polish containing water-based acrylic resin, and then uniformly coat the masking liquid on the surface of the substrate by a spin coating method , forming a mask layer film 12;

[0042] Step b, in a closed chamber, control the temperature of the chamber to 20-25°C and the humidity to 50-80% RH, and dry the mask layer film 12 naturally to form the crack template 13;

[0043] Step c, using magnetron sputtering or electron beam evaporation to deposit a conductive metal layer 14 on the surface of the cracked template 13;

[0044] In step d, the cracked template 13 is dissolved and removed with a cracked nail polish cleaning agent or a chloroform solution ...

specific Embodiment 2

[0048] The manufacturing method of the electromagnetic shielding optical window of this embodiment, the method flow and the process flow are exactly the same as the specific embodiment 1, the difference is that the limited cracked nail polish is diluted with a diluent, and the dilution ratio k is defined as the volume of the diluent and the cracked nail polish ratio, and 1≤k≤7.

[0049] Under the above-mentioned ratio conditions, it is found that the relationship between the average crack width w of the crack template 13 and the thickness h of the mask layer film 12 is:

[0050] w=0.342e 0.266h

[0051] In the formula, w is the average crack width of the crack template 13 in μm; h is the thickness of the mask layer film 12 in μm.

[0052] The relationship between the average crack interval d of the crack template 13 and the thickness h of the mask layer film 12 is:

[0053] d=15.8e 0.169h

[0054]In the formula, d is the average crack interval of the crack template 13 in ...

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Abstract

The invention discloses an electromagnetic shielding optical window making method, which belongs to the technical field of optical windows. The method comprises steps: crack nail polish containing waterborne acrylic resin is dispensed on the upper surface of a flat substrate, a spin coating method is adopted for coating the crack nail polish on the surface of the substrate uniformly, and a mask layer thin film is formed; in a specific temperature and humidity range, the mask layer thin film is dried naturally, and a crack template is formed; a conductive metal layer is deposited on the surface of the crack template; and finally, the crack template is dissolved and removed, and the electromagnetic shielding optical window is obtained. The problems of reducing light transmission performance of the optical window as the metal line width is increased, and reducing light transmission performance and electromagnetic shielding performance of the optical window due to a traditional mechanical friction way can be solved, a specific processing condition for solving the problem of uneven high-order diffraction energy distribution can be given, and thus the electromagnetic shielding optical window made by the method has good electromagnetic shielding performance and good optical performance.

Description

technical field [0001] A method for manufacturing an electromagnetic shielding optical window belongs to the technical field of optical windows. Background technique [0002] Optical windows are widely used in telemetry and remote sensing, medical diagnosis, secure communication, aerospace equipment and other fields. Traditional optical windows are pure electromagnetic wave transmission windows. However, the continuous growth of electrical equipment will not only greatly increase the intensity of electromagnetic waves, but also broaden the wave band of electromagnetic waves, resulting in the deterioration of the space electromagnetic environment. Because traditional optical windows are transparent to electromagnetic waves, the deterioration of the electromagnetic environment May adversely affect electromagnetically sensitive equipment. In order to reduce electromagnetic interference, an electromagnetic shielding function needs to be added to the optical window. [0003] I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K9/00C23C14/04C23C14/20
Inventor 金鹏韩余
Owner 哈尔滨时代仪器设备有限公司
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