Intermediate infrared optical glass for fine molding and molding

Abstract

The invention discloses intermediate infrared optical glass for fine molding and molding. The intermediate infrared optical glass comprises the following components by molar ratio: 40-80% of GeS2, 5-40% of Ga2S3, 1-15% of La2S3 and 1-20% of Sb2S3. The intermediate infrared optical glass disclosed by the invention has a wide infrared transmission range, good glass-forming ability, simple preparation process, high refractive index, high mechanical strength and low glass transition temperature, and does not contain any ingredients adverse to the environment and the mold, such as lead, arsenic, fluorine, chromium and the like.

Description

technical field [0001] The invention relates to the technical field of infrared optical glass materials, in particular to an optical glass for precision molding that acts in the mid-infrared range. Background technique [0002] Infrared optical lenses are widely used in the fields of communication, laser, medical treatment, electric power, metallurgy, chemical industry, testing, fire protection and national defense. Aspherical mirrors have been widely used because of the advantages of good imaging quality, small size, light weight, and simple structure in optical systems. [0003] Glass lens precision molding technology is a high-precision optical element processing technology. It puts the glass preform into a high-precision mold, and under the conditions of heating, pressure and oxygen-free, it is directly molded at one time to meet the requirements of use. Optical parts required. Precision molding technology can directly mold precision aspheric or spherical optical parts...

AI Technical Summary

Problems solved by technology

However, the disclosed chalcogenide glass formulations are either doped with rare earth elements to make laser materials, or the raw materials contain toxic elements such as As and Cd, or the glass formulations need to be quenched and formed. These formulations are not suitable for precision molding lenses. Materials, chalcogenide glass formulations that are really suitable for precision molding are rare

Images