Ultraviolet, visible and near-infrared light absorbing glass as well as preparation method and application thereof

Abstract

The invention provides ultraviolet, visible and near-infrared light absorbing glass. The glass contains the following elements, in percentages by molar: 0-10% of an iron element, 0-5% of a vanadium element, 0-5% of a nickel element, 0-5% of a cobalt element, 0-3% of a copper element, and 0-0.5% of a molybdenum element. The invention also provides a preparation method and application of the above visible light absorbing glass. According to the method provided by the invention, the ultraviolet, visible and near-infrared light absorbing glass prepared by the method has a higher light absorption effect in the range from 200 nm to 2500 nm, and the ultraviolet, visible and near-infrared light absorbing glass has transmittance of <=0.1% at a thickness of 0.20 mm; and meanwhile the ultraviolet, visible and near-infrared light absorbing glass is easy to form, has no internal defects such as bubbles, stone and stripes, and has good anti-crystallization performance, moisture-resistant stability and component stability, and the thermal performance satisfies requirements for a preparation process of optical fiber imaging components.

Description

technical field [0001] The invention relates to the technical field of optical glass, in particular to an ultraviolet, visible and near-infrared light-absorbing glass and its preparation method and application. Background technique [0002] Light-absorbing glass is an important type of optical glass, which mainly realizes the absorption effect of interfering stray light and improves the clarity and contrast of optical components. The most typical applications are stray light absorption in fiber optic imaging components such as fiber optic faceplates, fiber optic inverters, fiber optic tapers, and fiber optic microlens arrays. With the expansion of application fields, the requirements for ultra-thin, high-definition, and high-contrast ratio have become higher and higher in recent years. Therefore, light-absorbing glass is required to have better light absorption effect, more thorough absorption of stray light, and to cover ultraviolet, Visible to the near-infrared band. [...

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Problems solved by technology

[0008] (3) Compositional stability. Light-absorbing glass usually contains more coloring ions. Once it diffuses into the optical fiber during thermal processing, it will greatly increase the loss of the optical fiber and affect the imaging quality.

[0009] However, the light-absorbing glass materials described in the prior art cannot meet the above requirements

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