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Optical antireflection film adopting two coating materials

A technology of optical anti-reflection coating and film layer, which is applied in the direction of coating, etc., can solve the problems that are difficult to meet, the optical performance limitation of optical components, and the narrow light transmission band, so as to improve the imaging quality, ensure the green appearance, and increase the luminous flux. Effect

Active Publication Date: 2014-08-27
GUANGDONG XUYE OPTOELECTRONICS TECH
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AI Technical Summary

Problems solved by technology

However, this kind of anti-reflection coating has many kinds of materials and a large amount, the actual coating production cost is high, and the light transmission band is narrow, which limits the optical performance of optical components.
In addition, industry customers require that the lens coating color is close to green, and the reflectivity is less than 0.5% in the range of 420 to 680nm. The existing anti-reflection coatings are also difficult to meet these design requirements.

Method used

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  • Optical antireflection film adopting two coating materials
  • Optical antireflection film adopting two coating materials
  • Optical antireflection film adopting two coating materials

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Embodiment Construction

[0019] The present invention will be described below in conjunction with specific embodiments.

[0020] Such as Figure 1 to Figure 3 As shown, an optical anti-reflection coating using two kinds of coating materials, including the lens, the lens is coated with four layers of coating, the coating formula is: G|HLHL|A; where G is the lens, A is air, two vertical lines It has no practical significance, and the vertical lines represent the coating layer; H is Ti 3 o 5 , L is SiO 2 ; that is, the four-layer film layer is the first layer of SiO from top to bottom 2 Film layer, second layer Ti 3 o 5 Film layer, the third layer of SiO 2 Film layer, the fourth layer Ti 3 o 5 film layer, the first layer of SiO 2 The film layer is the surface film in contact with the air, the fourth layer Ti 3 o 5 The film layer is the lens film layer close to the lens;

[0021] The total physical thickness of the four layers is 256.69nm;

[0022] The thickness of each layer is:

[0023] Th...

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Abstract

The invention relates to the technical field of optical antireflection film design, in particular to an optical antireflection film adopting two coating materials. The four-layer film design is adopted, only the Ti3O5 and SiO2 coating materials are adopted, the design requirement that the transmittance is relatively high within the wide wavelength coverage is met, the phenomenon that the edge of a lens becomes red due to lack of films can be effectively reduced, meanwhile, the green appearance of the lens can be stably ensured, the luminous flux of an optical system is improved to a certain degree, and the imaging quality is improved.

Description

technical field [0001] The invention relates to the technical field of optical anti-reflection coating design, in particular to an optical anti-reflection coating using two coating materials. Background technique [0002] In optical components, the 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 coated on the surface of the optical component. This film is called an anti-reflection coating. In many application fields, the anti-reflection coating is indispensable, otherwise, the application requirements cannot be met. Taking a 35mm automatic zoom camera composed of 18 lenses, it is assumed that each glass and air interface has a 4% Reflection, the light transmittance of the lens without anti-reflection is 27%, the light transmittance of the lens coated with a layer of film is 66%, and the light transmittance of the lens coated with multi-la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/11
Inventor 李超
Owner GUANGDONG XUYE OPTOELECTRONICS TECH
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