Ultraviolet-radiation-resistant optical glass high in ultraviolet band transmittance

Abstract

The invention provides ultraviolet-radiation-resistant optical glass high in ultraviolet band transmittance. The optical glass is prepared from, by weight, 60-70 parts of phosphoric acid, 13-15 parts of boric acid, 8-12 parts of aluminum oxide, 4-6 parts of barium carbonate, 4-6 parts of potassium carbonate, 3-5 parts of calcium carbonate, 1-1.8 parts of a coloring agent A, 2-2.8 parts of a coloring agent B, 0.5-1 part of a reducing agent and 0.5-1 part of a stabilizing agent, wherein the stabilizing agent is composed of cerium oxide and strontium oxide, a ratio of strontium oxide to cerium oxide is 2:1, the coloring agent A refers to cobalt oxide, the coloring agent B refers to nickel oxide, a ratio of nickel oxide to cobalt oxide is 1:2, and tartaric acid serves as the reducing agent. The optical glass has advantages that a great ultraviolet radiation resistance function of the ultraviolet glass is achieved while ultraviolet band transmittance of the ultraviolet glass is increased, and the technical problem that the peak transmittance, which is required to be 85% or above in practical application, of current ultraviolet glass at an ultraviolet band is only about 80% is solved.

Description

technical field [0001] The invention relates to a glass used for medical fluorescence detection equipment, in particular to an optical glass with high transmittance in the ultraviolet band and resistance to ultraviolet radiation. Background technique [0002] Ultraviolet technology has a wide range of applications in medical fluorescence detection. Ultraviolet glass needs to have high pass rates in different ultraviolet bands (254nm; 313nm; 365nm), and at the same time cut off the visible light band. [0003] At present, domestic ultraviolet transmission glass has two defects: [0004] 1. The transmittance in the ultraviolet band is not high, generally about 80%; the current peak transmittance of ultraviolet glass in the ultraviolet band is only about 80%, and the current practical application requirements need to reach more than 85%. [0005] 2. After the UV glass is irradiated by UV optics for a long time, the transmittance of the UV part will decline. This phenomenon i...

AI Technical Summary

Problems solved by technology

[0004] 1. The transmittance in the ultraviolet band is not high, generally around 80%. At present, the peak transmittance of ultraviolet glass in the ultraviolet band is only about 80%, and the current practical application requirements need to reach more than 85%.

[0005] 2. After the ultraviolet glass is exposed to ultraviolet light for a long time, the transmittance of the ultraviolet part will decline

[0006] At present, in view of the above two defects, the general practice of the industry is to minimize the start-up time. Due to the impact of equipment detection accuracy, the UV glass needs to be replaced continuously, resulting in waste of cost.

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