The FSR-U340 Visible Absorbing Filter is a 25.4 mm diameter dark glass optical filter that passes UV and absorbs visible wavelengths made of Hoya U-340 filter glass.  These filters are precision polished for demanding research or OEM applications and are ideal for extration of UV wavelengths.


FSR-U340可见光吸收滤光片是一种直径25.4 mm的黑色玻璃滤光片,它通过紫外线,吸收Hoya U-340滤光片制成的可见光波长。这些滤光片经过精密抛光,可用于高要求的研究或OEM应用,是提取紫外波长的理想选择。