An ipRGC-influenced/Non-Visual Spectral Occupant Model (iNSOM) for lighting design, Part 1: Light simulation method.

This paper describes the light simulation development of an intrinsically photosensitive retinal ganglion cell (ipRGC)-influenced/Non-Visual Spectral Occupant Model (iNSOM). The light simulation framework of iNSOM combines multi-spectral lighting simulations into time-series annualized melanopic irradiance. The model integrates daylight, electric light and light from screen devices into the calculation methods. The applicability of the light simulation method is demonstrated using an example hospital ward model and tested under three daylight, electric light and evening monitor screen use scenarios.