Patent ID: 8596826

Claim:
An active cooling system comprising: a. a mounting board having a first surface, a second surface opposite the first surface, and a thickness between the first and second surfaces; b. a first light emitting diode mounted on the first surface of the mounting board; c. a first optic having a first chamber, the first optic being positioned on the first surface of the mounting board to process light from the first light emitting diode and such that a first coolant space is formed between the first chamber and the first light emitting diode for coolant flow around a light emitting portion of the first light emitting diode; d. a second light emitting diode mounted on the first surface of the mounting board; e. a second optic having a second chamber, the second optic being positioned on the first surface of the mounting board to process light from the second light emitting diode and such that a second coolant space is formed between the second chamber and the second light emitting diode for coolant flow around a light emitting portion of the second light emitting diode, the second coolant space being separate from the first coolant space; f. a coolant inlet to the first coolant space; g. a coolant outlet from the first coolant space; h. a coolant inlet to the second coolant space; i. a coolant outlet from the second coolant space; j. a channel connecting the coolant outlet from the first coolant space to the coolant inlet to the second coolant space, wherein the channel extends at least partially through the thickness of the mounting board; and k. a circulating member for actively circulating coolant (i) into the coolant inlet to the first coolant space, (ii) through the first coolant space and around the light emitting portion of the first light emitting diode, (iii) through the channel, (iv) through the second coolant space and around the light emitting portion of the second light emitting diode, and (v) out of the coolant outlet from the second coolant space so as to actively transfer heat away from the first and second light emitting diodes.