The 70291 Beam Aperture Disk is a 1.0 inch (25.4 mm) diameter aluminum disc with a 0.04 inch circular opening. Beam Aperture Disks are useful for limiting the angular aperture entering a detector or monochromator. Use them with or without a diffuser. The 1.0 inch discs fit into the 7123 Optic Holder.


70291光圈圆盘是直径为1.0英寸(25.4毫米)的铝制圆盘，圆形开口为0.04英寸。光束孔径圆盘对于限制进入检测器或单色器的角度孔径非常有用。使用或不使用扩散器。1.0英寸的光盘适合7123视点架。