Optical elements providing collimation and fan-out or diffusion
AssigneeNIL Technology ApS
InventorsOlivier Francois, Yuriy Elesin
Life of this patent
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Abstract
The present disclosure describes optical elements, as well as methods for designing and fabricating such optical elements. An example apparatus includes an optical element having a first surface and a second surface, wherein the first and second surfaces are on opposite sides of the optical element from one another. The first surface is structured to collimate a light beam incident on the first surface, and the second surface is structured to provide correction to collimation imparted by the first surface and to provide at least one of optical fan-out or diffusion for the light beam.
Claims21
An apparatus comprising:
- an optical element having a first surface and a second surface, wherein the first and second surfaces are on opposite sides of the optical element from one another,
- the first surface being structured to collimate a light beam incident on the first surface, and
- the second surface being structured to provide correction to collimation imparted by the first surface and to provide at least one of optical fan-out or diffusion for the light beam.
A method comprising:
- splitting a phase function into first and second components, wherein the first component represents collimation to be implemented on a first surface of an optical element, and the second component represents a collimation correction to be implemented on a second surface of the optical element;
- combining at least one of a fan-out phase function or a diffusion phase function with the second component of the collimator phase function to obtain a combined phase function;
- determining a first optical element structure corresponding to the first component of the collimator phase function;
- determining a second optical element structure corresponding to the combined phase function;
- and
- fabricating an optical device including a substrate that has a first surface and a second surface respectively on opposite sides of the substrate, wherein the first optical element structure is on the first surface, and wherein the second optical element structure is on the second surface.
A method comprising:
- splitting a phase function into first and second components, wherein the first component represents collimation to be implemented on a first surface of an optical element, and the second component represents a collimation correction to be implemented on a second surface of the optical element;
- converting the first component of the collimator phase function to a corresponding first optical element structure;
- converting the second component of the phase function to a corresponding second optical element structure;
- combining a fan-out structure with the second optical element structure to obtain a combined optical element structure;
- fabricating an optical device including a substrate that has a first surface and a second surface respectively on opposite sides of the substrate, wherein the first optical element structure in on the first surface, and wherein the combined optical element structure is on the second surface.
Dependencies are inferred from the claim text.