Led based illumination module with a reflective mask

An LED based illumination device, comprising:

• a first LED including a light emitting surface area, the light emitting surface area being less than an aperture area of the LED based illumination device;
• an interspatial reflector disposed adjacent to the first LED, the interspatial reflector including a reflective surface area, wherein the aperture area of the LED based illumination device is at least as great as the light emitting surface area combined with the reflective surface area;
• and
• an overmolded lens formed over the first LED and the interspatial reflector, wherein the overmolded lens fixes the interspatial reflector with respect to the first LED.

An LED based illumination device, comprising:

• a plurality of light emitting diodes (LEDs);
• a lens element disposed above the plurality of LEDs;
• and
• a patterned reflective layer disposed between the plurality of LEDs and the lens element, wherein a void in the patterned reflective layer is filled with a material that mechanically and optically couples the plurality of LEDs and the lens element.