Evaluation methods for retroreflectors and quantitative analysis of near-infrared upward reflective solar control window film-Part II: Optical properties evaluation and verification results

It was confirmed that these results are appropriate through verification with the results obtained from commercially available apparatus and from optical simulations. With respect to the effect of NIR URSCF, it was confirmed that downward reflectance of solar radiation at the incident polar angle of 70° and the incident azimuth angle of 0° was approximately half of that of conventional specular reflective solar control window film.