The 5231 Neutral Density Filter is made with an Inconel® metallic coating on a glass substrates. This 1.0 inch (25.4 mm) diameter ND filter provides 0.1 OD spectrally uniform attenuation over the wavelength range from 400 to 2000 nm. The reflective nature of the coating helps reduce thermal effects when this filters are used with moderate power lasers.

5231中性密度滤光片是用一个铬镍铁合金®金属涂层在玻璃基板上。直径1.0英寸(25.4 mm)的ND滤波器在400至2000 nm波长范围内提供0.1 OD光谱均匀衰减。涂层的反射性质有助于减少热效应,当这种过滤器与中等功率激光器一起使用。