標準號：BS ISO 15368-2001
中文標準名稱：光學和光學儀器.平面反射系數的測量和平行面元件的透射率
英文標準名稱：Optics and optical instruments - Measurement of reflectance of plane surfaces and transmittance of plane parallel elements
標準類型：N04
發布日期：2001/9/26 12:00:00
實施日期：2001/9/26 12:00:00
中國標準分類號：N04
國際標準分類號：17.180.01
適用范圍：This International Standard gives rules for the measurement of the spectral reflectance of plane surfaces and spectral transmittance of plane parallel elements using spectrophotometers over the spectral range 190 nm to 25μm. The transmittance τ and the reflectance ρ of optical components are generally divided into two parts as follows: τ = τr + τd (1) ρ = ρr + ρd (2) where τr is the regular transmittance; τd is the diffuse transmittance; ρr is the regular reflectance; ρd is the diffuse reflectance. This International Standard applies only to measurements of the regular transmittance and the regular reflectance; it does not apply to those of the diffuse transmittance and the diffuse reflectance. This International Standard is applicable to test specimens which are coated or uncoated optical components without optical power.