ta-C Y2O3 Infrared optical lens equipped with ta-C and yttrium oxide thin film

摘要

The present invention relates to a hybrid infrared optical lens having YbF_3 and Y_2O_3 coating thin film layers and, more specifically, to a hybrid infrared optical lens having ta-C and Y_2O_3 coating thin film layers capable of maintaining a double-side ARC to secure high transmittance and to secure a total transmittance and durability. A far-infrared optical lens having a YbF_3 coating thin film layer, in accordance with the present invention, maintains the double-sided ARC to ensure high transmittance, and is capable of replacing an existing DLC with a ta-C protective layer having a thickness of 100-200 nm to secure total transmittance and durability.