The boundaries of indoor light environment can be affected by the determination of window coating. The introduced paper manages a two way assessment of phantom qualities of a determination of unique window sheets. The size of tests incorporates different colored glasses, low emissivity window sheets and other current window coating. In the initial segment, phantom conveyance of the examples is estimated with a spectrophotometer. The results are ordered as far as their visual and photobiological reaction. The subsequent part incorporates estimations, where a portion of the chose tests are utilized in our exploratory models. One of the models is viewed as the reference model outfitted with single clear glass.