The 81389R Air Mass Filter simulates the solar spectrum at ground level when the sun is directly overhead. This 2 inch x 2 inch filter fits into a solar simulator's integral filter holder, sold separately, or can be mounted into an external filter holder which will flange to the Oriel Research Arc Lamp Housings. The 81389R is an AM Direct type filter which meets the AM 1.5 D spectrum per the ASTM E 891 standard. It can also match the AM 1.0 D and AM 2.0 D spectra.

81389R空气质量过滤器在地面上模拟太阳直射时的光谱。这款2英寸x 2英寸的滤光片适合安装在太阳能模拟器的整体滤光片支架上，可以单独出售，也可以安装在外接的滤光片支架上，这样就可以将法兰连接到Oriel研究用的弧光灯外壳上。81389R是一种AM直接型滤波器，符合ASTM e891标准的AM 1.5 D光谱。它还可以匹配AM 1.0 D和AM 2.0 D光谱。