Blevin W R, Geist J
Appl Opt. 1974 Oct 1;13(10):2212-7. doi: 10.1364/AO.13.002212.
A new type of reflectometer has been developed for measuring directional-hemispherical spectral reflectances in the infrared region. The instrument is based upon a cavity-shaped pyroelectric detector that itself collects the radiation reflected by the test sample, thereby obviating the need for an intermediate collector such as an integrating sphere or concave mirror. This detector is made from an electrically polarized plastic film of polyvinyl fluoride, coated with gold-black on its inner surface and backed with brass him on its outer surface in order to provide mechanical strength. The reflectometer has been used with Fourier spectrometer to measure spectral reflectances over the wavelength range 5-30 microm.
已开发出一种新型反射计，用于测量红外区域的定向半球光谱反射率。该仪器基于一种腔形热释电探测器，它自身收集测试样品反射的辐射，从而无需诸如积分球或凹面镜之类的中间收集器。这种探测器由聚偏氟乙烯的极化塑料薄膜制成，其内表面涂有黑金，外表面衬有黄铜箔以提供机械强度。该反射计已与傅里叶光谱仪配合使用，以测量5至30微米波长范围内的光谱反射率。
