The FSQ-RG645 Colored Glass Longpass Filter is a 50.8 x 50.8 mm 645 nm cut-on optical filter made of Schott RG645 glass. This long-wave pass edge filter is precision polished for demanding research or OEM applications.

FSQ-RG645彩色玻璃长通滤波器是由肖特RG645玻璃制成的50.8×50.8 mm 645 nm的直通光学滤波器。这种长波通边滤波器是经过精密抛光,以满足需要的研究或OEM应用。