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.
类型
Visible Absorbing Filter
尺寸
Ø25.4 mm
中心波长
340 nm
材料
Hoya U340 or equivalent
表面质量
60-40 scratch-dig
表面平面度
≤1λ at 632.8 nm over the clear aperture
厚度
2.0 to 3.0 mm, typical
尺寸公差
±0.3 mm
通光孔径
central ≥ 80% of diameter
入射角
0°
损伤阈值
30 W/cm2 CW, Typical
楔形
≤3 arc min
倒角
Up to 1 mm face width
倒角公差
45° ±15°
清洁
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。