【摘要】 为了得到农产品生物组织光学参数,设计了一套双积分球系统实验测量装置。文中描述了其测量原理、系统组成和测量技术,采用650nm的半导体激光器作为光源,对Intralipid溶液和EvansBlue溶液进行了实际测量,验证了该测量系统的准确性。通过实测,纯牛奶的散射系数为27.719±0.836,吸收系数为0.014±0.001,各向异性因子g=0.846±0.002。通过与其它测量方法对照,相对误差小于5%,该装置能够较准确地获得样品的散射与吸收系数,使之适用于农产品(如果品蔬菜、动物肉、牛奶等)光学参数的测量。更多还原

【Abstract】 In order to obtain optical properties of farm products, the double-integrating-sphere system was designed . The principle of measurement and configuration of system was described. The mixed solution of Intralipid and Evans Blue was detected to verify the veracity of the system by using a diode laser at 650 nm. Corresponding values of the optical properties for scattering coefficient μs, absorption coefficient μa, anisotropy coefficient g measured on pure milk sample were 27.719±0.836, 0.014±0.001, 0.846±0.002, respectively. The authors compared the values of optical parameters based on the double-integrating-sphere system with other measuring methods and obtained a <5% relative deviation. It is concluded that the method for determining the optical properties in agriculture products(vegetables, leaf, tissue of animals, milk etc.) based on double-integrating-sphere system is feasible.更多还原