Evaluation methods for retroreflectors and quantitative analysis of near-infrared upward reflective solar control window film - Part I: Theory and evaluation methods

This article mainly describes theory and methods of the above-mentioned evaluation, and evaluates results of beam leakage compensated DHSR. Verification of the measurement results is discussed in Part II of this article, together with the properties and effects of the upward reflective solar control window film that was evaluated in this study.