Patent attributes
Lighting control systems are disclosed that have a lighting fixture, a microprocessor, and a single dimmer control that enables a user to adjust a total current to the lighting fixture. The lighting fixture includes a first LED channel that emits a first spectrum comprising white light and a second LED channel that emits a second spectrum comprising biologically-tailored light. The microprocessor is configured to take measurements of current, store a plurality of average values of total current, set a setpoint that defines a maximum current for a dimming profile of the lighting fixture, and control a biological light ratio according to the dimming profile. The ratio may be an M/P ratio of melanopic lux to photopic lux or an OPN5/OPN4 ratio of OPN5 lux to melanopic lux. The dimming profile correlates the ratio to a percentage of the maximum current.
