The PBS-2 Pellicle Beam Sampler is 74.9 mm in diameter by 12.7 mm housing with a 51.6 mm Clear Aperture. This uncoated pellicle yields an average reflectivity of 8% from 375–2400 nm. It is well suited for beam sampling applications requiring high transmission and low reflectance. Pellicle beams samplers are ultra-lightweight components that virtually eliminate multiple reflections commonly associated with thicker glass beamsplitters. Pellicles are manufactured by stretching a 5 µm thick polymer membrane (index=1.47 @ 550 nm) over a flat metal frame. The extreme thinness eliminates secondary reflections by making them coincident with the original beam. Multiple wavelength versatility is an added benefit of an ultra-thin reflective membrane.


PBS-2薄膜梁取样器直径74.9毫米，外壳12.7毫米，孔径51.6毫米。这种无涂层薄膜的平均反射率为8%，从375-2400纳米。它非常适合需要高透射率和低反射率的光束采样应用。薄膜光束采样器是一种超轻量元件，它可以消除与较厚的玻璃分束器相关联的多次反射。制造薄膜拉伸5µm厚聚合物膜(指数= 1.47 @ 550海里)在一个平坦的金属框架。这种极端的厚度通过使二次反射与原光束一致来消除二次反射。多波长通用性是超薄反射膜的额外优点。