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Infrared metallization all-pass germanium window sheet and preparation method thereof

A metallization and infrared technology, applied in metal material coating process, final product manufacturing, sustainable manufacturing/processing, etc. Transmission spectrum, simple structure, and the effect of reducing manufacturing cost

Pending Publication Date: 2022-08-09
WUXI HONGRUI AEROSPACE MECHANICAL & ELECTRICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The high transmittance band of the window described in the above scheme is concentrated in 8 μm-12 μm and it is difficult to realize the metallized film layer, which increases the difficulty of window welding. Therefore, it is urgent to develop a method that simultaneously realizes the expansion of the infrared transmission band of the window. And solutions for peripheral metallization of germanium windows

Method used

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  • Infrared metallization all-pass germanium window sheet and preparation method thereof
  • Infrared metallization all-pass germanium window sheet and preparation method thereof
  • Infrared metallization all-pass germanium window sheet and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0032] This embodiment provides an infrared metallized all-pass germanium window, and the preparation method of the infrared metallized all-pass germanium window is as follows:

[0033] (1) Using germanium as the base, use a vacuum cleaner to remove impurities in the vacuum chamber, wipe the inner wall of the vacuum chamber with a degreased gauze dipped in anhydrous ethanol, and then use anhydrous acetone and anhydrous ethanol to microwave the substrate respectively for 15min, and use absorbent cotton Wipe the substrate clean, and use a vacuum coating machine to coat the optical film on the substrate. The outer edge of the optical film is provided with a blank area, and the thickness of the film layer is as follows:

[0034] layers film material Film thickness / nm 1 ZnS 72.3 2 YbF 3

543 3 ZnS 933.6 4 Ge 175.5 5 ZnS 189.1

[0035] The schematic diagram of the structure of the optical film on the substrate is as follows f...

Embodiment 2

[0038] This embodiment provides an infrared metallized all-pass germanium window, and the preparation method of the infrared metallized all-pass germanium window is as follows:

[0039] (1) Using germanium as the base, use a vacuum cleaner to remove impurities in the vacuum chamber, wipe the inner wall of the vacuum chamber with a degreased gauze dipped in anhydrous ethanol, and then use anhydrous acetone and anhydrous ethanol to microwave the substrate respectively for 15min, and use absorbent cotton Wipe the substrate clean, and use a vacuum coating machine to coat the optical film on the substrate. The outer edge of the optical film is provided with a blank area, and the thickness of the film layer is as follows:

[0040] layers film material Film thickness / nm 1 ZnS 72.8 2 YbF 3

[0041] (2) Cover the optical film with a ceramic sheet, use DC magnetron sputtering to carry out metallization coating in the blank area, sequentially coat Cr layer, Ni...

Embodiment 3

[0043] This embodiment provides an infrared metallized all-pass germanium window, and the preparation method of the infrared metallized all-pass germanium window is as follows:

[0044](1) Using germanium as the base, use a vacuum cleaner to remove impurities in the vacuum chamber, wipe the inner wall of the vacuum chamber with a degreased gauze dipped in anhydrous ethanol, and then use anhydrous acetone and anhydrous ethanol to microwave the substrate respectively for 15min, and use absorbent cotton Wipe the substrate clean, and use a vacuum coating machine to coat the optical film on the substrate. The outer edge of the optical film is provided with a blank area, and the thickness of the film layer is as follows:

[0045]

[0046]

[0047] (2) Cover the optical film with a ceramic sheet, use DC magnetron sputtering to carry out metallization coating in the blank area, sequentially coat a Cr layer, a Ni layer and an Au layer from the substrate upward, and peel off the ce...

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Abstract

The invention provides an infrared metallization all-pass germanium window sheet and a preparation method thereof.The infrared metallization all-pass germanium window sheet comprises a germanium substrate, a metal film, a transition area and an optical film, the metal film, the transition area and the optical film are arranged on the surface of the germanium substrate, the transition area is arranged on the outer edge of the optical film in the circumferential direction, and the metal film is arranged on the outer edge of the transition area in the circumferential direction; the film system structure of the optical film is MLMHM, through the brand new film system design, the number of film layers is smaller, meanwhile, the window piece expands the infrared transmission wave band, the three-layer metal film structure is adopted, the adhesion of the germanium substrate to the metal adhesion layer is enhanced, the metallized film is firmer, meanwhile, the welding difficulty of the metal film layers is reduced, and the service life of the window piece is prolonged. And the utilization rate of the target material is improved, so that low-consumable thick film layer plating can be realized, and the manufacturing cost is saved on the premise of realizing a design function.

Description

technical field [0001] The invention belongs to the technical field of optical films, and relates to an infrared metallized all-pass germanium window and a preparation method thereof. Background technique [0002] Anti-reflection coating is also known as anti-reflection coating. In optical components, light energy is lost due to the reflection on the surface of the component. In order to reduce the reflection loss on the surface of the component, a transparent dielectric film is often deposited on the surface of the optical component, so that the component achieves anti-reflection enhancement. transparent effect. The original anti-reflection coating is achieved by depositing a single layer of anti-reflection film material on the surface of the component, which can only anti-reflect electromagnetic waves of a single specific wavelength. To achieve antireflection over a wider range and at more wavelengths, it can be achieved by depositing multiple layers. With the research e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/115C23C14/04C23C14/06C23C14/16C23C14/35
CPCG02B1/115C23C14/0629C23C14/0694C23C14/165C23C14/042C23C14/35Y02P70/50
Inventor 王济洲陆春王云飞王小军王多书陈昱翰周玲许斌王际充
Owner WUXI HONGRUI AEROSPACE MECHANICAL & ELECTRICAL EQUIP CO LTD