A low refractive index optical coating material with uniform film formation and preparation method thereof

A low-refractive-index, optical coating technology, applied in optics, optical components, sputtering, etc., can solve problems such as microscopic unevenness of the film layer, reduce stress, solve the problem of film cracking, and ensure stability.

Active Publication Date: 2019-06-28
北京富兴凯永兴光电技术有限公司 +1
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Problems solved by technology

[0003] In order to overcome the deficiencies of the existing technology and aim at the problem of microscopic inhomogeneity of the film layer of magnesium fluoride material in the special coating technology, the present invention provides a low refractive index optical coating material with uniform film formation and its preparation method

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  • A low refractive index optical coating material with uniform film formation and preparation method thereof

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Embodiment Construction

[0016] Obviously, many modifications and changes made by those skilled in the art based on the gist of the present invention belong to the protection scope of the present invention.

[0017] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in this specification refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, Steps, operations, elements, components and / or groups thereof. It will be understood that when an element or component is referred to as being "connected" to another element or component, it can be directly connected to the other element or component or intervening elements or components may also be present. As used herein, the term "and / or" includes any and all co...

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Abstract

The invention provides a low-refractive-index optical film coating material of uniform film forming and a preparation method thereof, and belongs to the technical field of optical film coating material. The low-refractive-index optical film coating material is composed of magnesium fluoride and additive calcium fluoride, barium fluoride or strontium fluoride. The components of the low-refractive-index optical film coating material are prepared and mixed according to the weight ratio through granulation. The weight preparation of the low-refractive-index optical film coating material is listed as follows: 80-99.5 of magnesium fluoride and 0.5-20 of the total additive fluoride, and 3-6h sintering is performed under the temperature of over 800 DEG C. According to the film coating material, the magnesium fluoride and the calcium fluoride, the barium fluoride and the strontium fluoride are simultaneously evaporated and deposited on the optical surface in the process of depositing on the optical element, and the situation of oriented growth in the conventional deposition process of single magnesium fluoride is prevented because of the effect of the calcium fluoride, barium fluoride and strontium fluoride molecules so as to form optical film layers of low uniform stress, stability of multilayer films can be guaranteed in coating the multilayer films because of reduction of stress and the problem of film cracking of the multilayer films can be solved.

Description

technical field [0001] The invention relates to a low-refractive-index optical coating material with uniform film formation and a preparation method thereof, belonging to the technical field of optical coating materials. Background technique [0002] In the field of optical coatings, magnesium fluoride is a commonly used low refractive index optical coating material. Due to its low refractive index, it is widely used to coat anti-reflection coatings. During the film formation process, magnesium fluoride is deposited on the surface of optical components. The process is also the process of recrystallization on the optical surface. Since the growth of crystals has a certain directionality, for example, in the process of freezing water, it usually grows in a specific direction, which usually leads to the microscopic inhomogeneity of the formed film. Stress builds up in multilayer films, leading to film cracking. Contents of the invention [0003] In order to overcome the def...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/00G02B1/115G02B5/08C23C14/06C23C14/24
CPCC23C14/0694C23C14/24G02B1/00G02B1/115G02B5/08
Inventor 秦海波欧德旭潘硕
Owner 北京富兴凯永兴光电技术有限公司
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