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Far-infrared sapphire window protection screen for night vision

A protective screen and sapphire technology, applied in the direction of instruments, optics, layered products, etc., can solve the problems that the far-infrared coating structure cannot be realized, and achieve the effect of good transparency and uniform coating composition

Active Publication Date: 2015-04-22
ZHEJIANG XINGXING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although this patent also uses the coating to achieve infrared optical functions, the patented coating is used to emit far-infrared rays, but it does not involve high-transparency coatings for far-infrared rays, and cannot achieve a coating structure that can transmit far-infrared rays.

Method used

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  • Far-infrared sapphire window protection screen for night vision
  • Far-infrared sapphire window protection screen for night vision
  • Far-infrared sapphire window protection screen for night vision

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Embodiment 1

[0019] Such as figure 1 As shown, the sapphire window protection screen includes a substrate 1, the substrate 1 is sapphire, the side of the substrate 1 is coated with a multilayer film 2, and the multilayer film 2 is Ti 3 o 5 Plating and SiO 2 Plating layers are formed in combination. In this embodiment, the multilayer film 2 is an even-numbered layer, and Ti 3 o 5 Plating and SiO 2 The number of coating layers is the same, Ti 3 o 5 The plating layer is the first layer attached to the substrate 1 . Ti 3 o 5 Plating and SiO 2 The advantage of the same number of layers of coating is that SiO 2 The coating is the outermost layer, SiO 2 The coating is relatively hard and wear-resistant, Ti 3 o 5 The advantage of the plating being the innermost layer is that it combines better with sapphire and can comprehensively improve the cut-off effect. In this embodiment, the multilayer film 2 includes: 23.41nm thick Ti 3 o 5 Plating, 36.93nm thick SiO 2 Coating, 39.91nm thi...

Embodiment 2

[0029] The general content of this embodiment is the same as that of Embodiment 1, the difference is that, in this embodiment, the multilayer film 2 is an odd number of layers, Ti 3 o 5 Coating ratio SiO 2 The number of coating layers is one more, Ti 3 o 5 The coating is the first layer attached to the substrate 1, and the outermost layer of the multilayer film 2 is also Ti 3 o 5 plating. Ti 3 o 5 Plating and SiO 2 The advantage of the same number of coating layers is that Ti 3 o 5 Coating is the outermost layer, Ti3 o 5 Coating optical performance is good, Ti 3 o 5 The advantage of the plating being the innermost layer is that it combines better with sapphire and can comprehensively improve the cut-off effect. The multilayer film 2 includes: 23.41nm thick Ti 3 o 5 Plating, 36.93nm thick SiO 2 Coating, 39.91nm thick Ti 3 o 5 nm coating, 74.13nm thick SiO 2 Coating, 13.89nm thick Ti 3 o 5 Plating, 89.74nm thick SiO 2 Coating, 33.02nm thick Ti 3 o 5 Plati...

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Abstract

The invention provides a far-infrared sapphire window protection screen for night vision, and belongs to the technical field of optical equipment. The technical problems that far-infrared rays cannot permeate a coating film structure of the existing protection screen and the like are solved. The far-infrared sapphire window protection screen for night vision comprises a substrate made from sapphire, wherein the side of the substrate is coated by a multilayer film, and the multilayer film is formed by compounding a Ti3O5 coating with an SiO2 coating; high permeability is realized by the multilayer film at a visible light waveband from 420nm to 720nm, the cut-off is realized by the multilayer film at a waveband below 400nm, the cut-off is realized by the multilayer film at a near-infrared waveband from 720nm to 1100nm, and the high permeability is realized by the multilayer film at a far-infrared waveband above 1100nm. The far-infrared sapphire window protection screen for night vision provided by the invention has the advantages of stable optical properties, relatively low cost, good transparency, uniform coating components, realization of selective cut-off of light rays at different wavebands and the like.

Description

technical field [0001] The invention belongs to the technical field of optical equipment and relates to a far-infrared sapphire window protection screen for night vision. Background technique [0002] With the rapid development of science and technology, the function of the window protection screen is also gradually improving, and the appearance of night vision function has also raised the technical requirements of optical coating, which needs to realize the transmission in the 8-14μm far infrared band, so as to achieve the night vision function. In addition, in terms of material, the surface hardness of sapphire is higher than that of other materials, and it is more resistant to scratches, which is more suitable for field operations of night vision products. [0003] Related technologies such as patent CN01141694.7 discloses a protective film product capable of radiating far-infrared rays with a wavelength of 4 μm to 14 μm. Because certain ceramic materials can absorb ambie...

Claims

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Application Information

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IPC IPC(8): G02B1/14G02B5/20B32B33/00
CPCB32B33/00G02B5/208
Inventor 王先玉夏永光
Owner ZHEJIANG XINGXING TECH CO LTD
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