Patent ID: 11874476
Assignee: IMAGIA, INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 45:
46. An optical display with integrated inverted metalenses, comprising:
a two-dimensional array of light-emitting diodes (LEDs), wherein each LED comprises:
a planar face to emit optical radiation with a Lambertian emission profile; and
an integrated metalens in an inverted configuration with a two-dimensional array of passive pillars that extend between the planar face of the LED and a substrate, wherein the passive pillars are arranged in a radially symmetric pattern of varying pillar diameters,
wherein the diameter of each pillar and a subwavelength interelement spacing between adjacent pillars are selected as functions of an operational wavelength of the optical radiation emitted by the LED to provide a target phase gradient that modifies the Lambertian emission profile of the optical radiation generated by the LED to have a modified transmission profile.