Patent ID: 9137874
Filing Date: 2015-09-15
Classification: A01G,H05B,Y02P

Abstract:
1. A lighting system with selectable emission characteristics comprising: a controller; and a plurality of light sources operatively coupled to the controller; wherein each of the plurality of light sources is individually operable to emit a combined light comprising a first light having a wavelength within the range of about 650 nanometers to about 700 nanometers, a second light having a wavelength within the range of about 500 nanometers to about 570 nanometers, and a third light having a wavelength within the range of about 430 nanometers to about 470 nanometers; wherein the controller controls emission characteristics of the plurality of light sources to alter the combined light; wherein the second light is characterized by a relative human photopic response of greater than 0.0 and less than 0.4 throughout the range from about 500 nanometers to about 570 nanometers; wherein the combined light has a color temperature greater than about 3000 Kelvin, a Color Rendering Index of greater than about 65, and a photosynthetic efficiency of greater than about 1 micromole Yield Photon Flux per Watt.