RONGYANG OPT is a hightech Company . Our mission is to foster an innovative solution for lighting, architecture and real-estate industries aiming at creating the perception of an extraordinarily wide space, by means of a genuine physical reproduction of optical atmospheric phenomena indoors. Our unique lighting systems reproduce the true effect of natural sunlight entering through the opening in the integrated ceiling, with a realistic sun perceived at infinite distance surrounded by a clear deep blue sky.Objects shine in the exceptional light casting sharp sky-blue shadows, " lighting systems-reproduce a virtual experience of the sun and sky; especially in a below-ground environment, the effect is so powerful that it may radically change our perception of reality. It allows us to rediscover natural light in the real world in a totally new and surprising way". The result is achieved thanks to the comprehensive work carried on by an interdisciplinary team of researchers in the field of optical physics, numerical modelling, chemistry, material science, architecture and design.