The FR-BG40 Colored Glass Bandpass Filter is a 12.7 mm diameter blue bandpass optical filter made of Schott BG40 filter glass. These bandpass filters are precision polished for demanding research or OEM applications.

FR-BG40彩色玻璃带通滤波器是由Schott BG40滤光玻璃制成的直径12.7 mm的蓝色带通光学滤波器。这些带通滤波器是为高要求的研究或OEM应用精密抛光。