Method and system for dynamic in-situ phosphor mixing and jetting

A system for dispensing a phosphor composition onto a light emitting device, comprising:

• a light sensor configured to detect a characteristic of light emitted from the light emitting device;
• a plurality of phosphor dispensers, each configured to dispense a respective color phosphor onto a surface of the light emitting device;
• and
• a controller configured to adjust relative amounts of the color phosphors during dispensation to reduce a difference between the detected characteristic of the light and a desired characteristic of the light and determining whether the detected characteristic of light is within a predetermined range for the desired characteristic of the light,
• wherein the controller is further configured to iteratively:
• control the phosphor dispensers dispense one or more of the phosphors, detect the characteristic of the light, and adjusts the relative amounts of the color phosphor while the detected characteristic of the light emitted from the light emitting device is outside of the predetermined range for the desired characteristic of the light, and
• wherein the controller is further configured to control the phosphor dispensers to dispense the one or more of the phosphors until one of a predetermined volume or a predetermined weight of the phosphor composition has been dispensed while the detected characteristic of the light is within the predetermined range.