Laser light incident on the polycarbonate surface will be refracted at a greater angle into the surface 激光射入聚碳酸脂表面將產(chǎn)生較大的折射角。
Tn order to eliminatc the error caused hylight power drift of incident light, we adopt the method of the ration of scattering light to measure the concentration of protein in milk . that is to measure 90 " scattering light intensity and 0 " transmitting light intensity in the light incident plane . the ratio of them is to be used to express measured optical parameter 由于牛乳蛋白質(zhì)的測(cè)量精度要求很高,為了消除因入射光的光功率漂移而引起的誤差,我們采用散透比法來測(cè)量牛乳蛋白質(zhì)的含量,即在光的入射平面內(nèi)同時(shí)90處的散射光光強(qiáng)is和測(cè)量0處的透射光光強(qiáng)it,用它們的比值來表征測(cè)試牛乳蛋白質(zhì)含量的光學(xué)參量。