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Manufacturing method of electromagnetic shielding curved surface optical window with metal grid structure

An electromagnetic shielding and metal mesh grid technology, applied in the field of optical windows, can solve the problems of uneven distribution of high-order diffraction energy, reduce the light transmission performance of optical windows, reduce the light transmission performance and electromagnetic shielding performance of optical windows, etc., and achieve good electromagnetic shielding performance. The effect of shielding performance, expanding universality, and good light transmission performance

Active Publication Date: 2018-03-23
哈尔滨时代仪器设备有限公司
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Problems solved by technology

[0010] In view of the above-mentioned shortcomings and deficiencies, the present invention discloses a method for manufacturing an electromagnetic shielding curved surface optical window with a metal grid structure. The template is removed by mechanical friction, avoiding the reduction of the light transmission performance and electromagnetic shielding performance of the optical window at the same time as the traditional mechanical friction method, and also provides specific processing conditions that can solve the problem of uneven distribution of high-order diffraction energy, so that the method of the present invention can be produced. The electromagnetic shielding curved surface optical 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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  • Manufacturing method of electromagnetic shielding curved surface optical window with metal grid structure
  • Manufacturing method of electromagnetic shielding curved surface optical window with metal grid structure

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specific Embodiment 1

[0044] The manufacturing method of the electromagnetic shielding curved surface optical window with metal mesh structure in this embodiment, the flow chart is as follows figure 1 As shown, the method includes the following steps:

[0045] Step a, paste a circle of adhesive tape 2 with a width of 5-20 mm on the edge of the outer surface of the cleaned curved substrate 1;

[0046]Step b, coating the cracked paint 3 containing water-based acrylic resin on the curved substrate 1 not covered by the adhesive tape 2 by spraying or dipping;

[0047] Step c, in a closed chamber, control the temperature of the chamber to 20-25°C and the humidity to 50-80% RH, and dry the crack paint 3 naturally to form the crack template 4;

[0048] Step d, remove the adhesive tape 2;

[0049] Step e, using magnetron sputtering or electron beam evaporation to deposit a conductive metal layer 5 on the surface of the cracked template 4;

[0050] Step f, using chloroform solution or PGMEA solution to di...

specific Embodiment 2

[0053] The manufacturing method of the electromagnetic shielding curved surface optical window with a metal grid structure in this embodiment, the method flow and process flow are exactly the same as the specific embodiment 1, the difference is that the crack paint is diluted with a diluent, and the dilution ratio k is defined as the diluent and the crack The volume ratio of paint, and 2≤k≤5.

[0054] Under the above ratio conditions, it is found that:

[0055] The relationship between the average crack width w of the crack template 4 and the thickness h of the crack paint 3 is:

[0056] w=0.342e 0.266h

[0057] In the formula, w is the average crack width of the crack template 4 in μm; h is the thickness of the crack paint 3 in μm.

[0058] The relationship between the average crack interval d of the crack template 4 and the thickness h of the crack paint 3 is:

[0059] d=15.8e 0.169h

[0060] In the formula, d is the average crack interval of the crack template 4 in μm...

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Abstract

The method for manufacturing an electromagnetic shielding curved surface optical window with a metal grid structure belongs to the technical field of optical windows; in the method, an adhesive tape is pasted on the edge of the outer surface of a curved substrate, and crack paint is applied, and then the crack paint is naturally dried under suitable conditions. Form a crack template, then remove the tape, then deposit a conductive metal layer on the surface of the crack template, and finally dissolve and remove the crack template to obtain an electromagnetic shielding curved optical window; the invention not only avoids the problem of reducing the light transmission performance of the optical window due to the increase of the metal line width , and avoid the traditional mechanical friction method to reduce the light transmission performance and electromagnetic shielding performance of the optical window at the same time, and also provide 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, Not only has good electromagnetic shielding performance, but also has good optical performance, and at the same time has a wider range of applications.

Description

technical field [0001] The invention relates to a manufacturing method of an electromagnetic shielding curved surface optical window with a metal grid structure, which belongs to the technical field of optical windows. Background technique [0002] Curved optical window is a kind of optical window with special shape based on the principle of aerodynamics and optimized by spherical or aspheric technology. It breaks the status quo that traditional optical windows are mainly flat. In the field of aerospace, it is of great significance for reducing air resistance of aircraft and increasing flight speed. The traditional curved optical window is a pure electromagnetic wave through the window. However, the continuous growth of electrical equipment will not only increase the intensity of electromagnetic waves, but also widen the band of electromagnetic waves, resulting in the deterioration of the space electromagnetic environment. Due to the traditional optical Windows are transpar...

Claims

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Application Information

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