The 10QW20-4 is a Excimer Grade UV Fused Silica window, 25.0 mm in diameter and 3.0 mm thick with high damage threshold V-coating at 266 nm.

10QW20-4是一种准分子级UV熔融石英玻璃,直径25.0 mm,厚度3.0 mm,在266 nm处有高损伤阈值v涂层。