Patent ID: 11923475
Assignee: S.V.V. TECHNOLOGY INNOVATIONS, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 13:
14. A method of making a light converting optical system, comprising:
providing a microstructured broad-area front surface having an array of linear grooves which are disposed side by side and extend along a straight line, each of the linear grooves having a triangular cross section and being configured to reflect light using a total internal reflection and deflect light using refraction;
providing a thin sheet of opaque reflective material;
positioning the thin sheet of opaque reflective material parallel to the microstructured broad-area front surface;
providing a photoabsorptive film approximately coextensive with the microstructured broad-area front surface and having an active layer comprising a first light converting semiconductor material having a first bandgap and a second light converting semiconductor material having a second bandgap which is different than the first bandgap, and wherein a thickness of the active layer is less than a minimum thickness sufficient for absorbing substantially all light in a visible spectrum traversing through the photoabsorptive film; and
disposing the photoabsorptive film in an energy receiving relationship with respect to a light source and between the microstructured broad-area front surface and the thin sheet of opaque reflective material.