Composition for eco-friendly infrared transmissive glass and method for manufacturing optical glass using the same
AssigneeKorea Photonics Technology Institute
InventorsJuhyeon Choi, Seonhoon Kim, Weesam Lee, Jeonghwan In
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Abstract
A composition for eco-friendly infrared transmissive glass and a method for optical glass using the same are disclosed. According to an embodiment of the present invention, there is provided a method for manufacturing optical glass transmitting an infrared wavelength band of light by a preset reference value or more, comprising mixing preset contents of Ge, Ga, and Se and charging the mixture into a preset container, performing fusion on the preset container in a first preset environment, and gradually cooling the container in a second preset environment.
Claims2
A composition for glass transmitting an infrared wavelength band of light by 60% or more and having a hardness of 170 HK or more and a refractive index of 2.5 or more,
- wherein the composition consists of 22.5 mol % to 46.875 mol % of Ge, 1.875 mol % to 12.5 mol % of Ga, 43 mol % to 69 mol % of Se, and 1 mol % to 7 mol % of Te.
A composition for glass transmitting an infrared wavelength band and having a hardness of 175 HK or more and a refractive index of 2.45 or more,
- wherein the composition consists of 22.5 mol % to 46.875 mol % of Ge, 1.875 mol % to 12.5 mol % of Ga, 10 mol % to 57.5 mol % of Se, and 2.5 mol % to 50 mol % of S.
Dependencies are inferred from the claim text.