An anti-reflection film and an optical component comprising the anti-reflection film

Abstract

The invention discloses an anti-reflection film. The anti-reflection film is arranged on the surface of a substrate layer. The antireflection film includes a multilayer film arranged on the surface of the substrate layer and a protective film arranged outside the multilayer film. The multi-layer film is formed by stacking two or three low-reflection layers, and the outer side of the multi-layer film of the anti-reflection film is provided with two layers of protective films in sequence; and an optical component comprising the anti-reflection film, the The anti-reflection film is provided on both sides or one side of the optical component filter. The present invention can obtain an anti-reflection film with high performance and anti-reflection performance for broadband wavelengths from 400nm to 800nm, and when the anti-reflection film is used in an optical system, ghosting or flare can be reduced.

Description

technical field [0001] The invention relates to the technical field of optical equipment, in particular to an anti-reflection film and an optical component comprising the anti-reflection film. Background technique [0002] Most of the optical elements included in the optical system, such as lenses and optical filters, are made of transparent members (substrates) such as optical glass or optical plastics. When the refractive index of such a substrate increases, the light incident surface and the light exit surface ( The reflectance of the light entrance and exit surface) will become higher. If an optical element with a high reflectance of the light entrance and exit surface is used, the effective amount of light reaching the image surface will decrease, and unnecessary reflection from the light entrance and exit surface of the optical element will be reduced. Reflection and incident on the image plane will cause ghosting and flare, which will reduce the optical performance of...

AI Technical Summary

Problems solved by technology

[0005] In some multilayer films using vapor deposition, the reflectivity is reduced in the broadband wavelength range of wavelength 400nm to wavelength 730nm. To obtain a good anti-reflection function, a large number of film layers is required. If the number of film layers increases, then When the incidence is at a strict oblique angle, the ripple and wavelength shift in the visible field will be greatly affected, and it will become difficult to obtain a good reflection effect in the broadband wavelength range

It is known that the reflectance can be reduced in the broadband wavelength range from 400nm to 730nm, and a good anti-reflection function can be obtained. A low refractive index material (C 0024) is placed on the outermost layer. Although Sol-Gel is used for the configuration of the low refractive index material It is effective to manufacture by this method, but because the film structure is very fragile in the above method, it is difficult to perform necessary wiping work when assembling the camera, etc.

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