Simulation of power distribution in prescription sunglasses using the coordinate transformation method

In this study, the whole-surface power distributions in prescription sunglasses at different face form angles were simulated using the coordinate transformation method. The lens was tilted with respect to the optical center by directly transforming its Cartesian coordinate system at the desired face form angle. The results show that prescription sunglasses display different whole-surface power maps compared to plano sunglasses. Moreover, when the tilt angle of the lens is high, a greater power error is observed in the temporal area of prescription sunglass lenses, which makes the power distribution more asymmetric. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement