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Light emitter devices and methods with reduced dimensions and improved light output

  • US 10,008,637 B2
  • Filed: 12/06/2011
  • Issued: 06/26/2018
  • Est. Priority Date: 12/06/2011
  • Status: Active Grant
First Claim
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1. A light emitter device comprising:

  • a submount having a surface comprising a length, a width, and a planar surface area of 6 square millimeters (mm2) or less;

    first and second electrical elements disposed over the upper surface of the submount;

    a light emitting chip disposed over the submount, wherein the light emitting chip electrically communicates with the first and second electrical elements, and wherein the first and second electrical elements extend radially outwardly from a center of the submount and around each edge of the light emitting chip, so as to extend towards each edge of the submount to occupy a majority of the planar surface area; and

    a lens formed over the light emitting chip and the submount from a material and/or encapsulant dispensed over the submount and light emitting chip in liquid form, wherein the lens comprises a circular lens base, a substantially solid hemispheric portion extending above the circular lens base, and a protective layer extending around the circular lens base, wherein the circular lens base comprises a circular diameter of a constant value in all directions coplanar with the circular lens base, wherein the circular diameter is substantially equal to the length or the width of the submount for maximizing light extraction therefrom;

    wherein substantially all of the planar upper surface of the submount located radially inside the circular lens base is occupied by the first and second electrical elements;

    wherein a portion of each of the first and second electrical elements extends along the planar upper surface outside the circular lens base towards a respective edge of the planar upper surface;

    wherein the light emitter device is operable for emitting light at 100 lumens or more at 350 milliamps (mA); and

    wherein the light emitter device has a maximum height of 1.85 mm.

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