Light sources with chip-level integrated diffusers
AssigneeII-Vi Delaware, Inc.
InventorsJimmy A. Tatum, James K. Guenter
Life of this patent
Estimating the term…
Abstract
An embodiment includes a light source. The light source may include a substrate and a diffuser. The substrate may include a first surface and a second surface. The second surface may be opposite the first surface. The diffuser may be carried by the substrate. The diffuser may be configured to receive an optical signal from the substrate after the optical signal propagates through the substrate and to control a particular profile of a resultant beam of the optical signal over two axes after the optical signal propagates through the integrated diffuser.
Claims25
A light source, comprising:
- a substrate having first surface and a second surface opposite the first surface;
- an optical element, positioned at the first surface of the substrate, configured to transmit an optical signal through the substrate;
- and
- a diffuser, positioned at the second surface of the substrate, comprising a plurality of lenslets having a pseudorandom distribution of two or more focal lengths.
A method, comprising:
- transmitting an optical signal from an optical element positioned at a first surface of a substrate;
- passing the optical signal through the substrate toward a second surface of the substrate opposite to the first surface;
- propagating the optical signal through a diffuser positioned at the second surface of the substrate, the diffuser comprising a plurality of lenslets having a pseudorandom distribution of two or more focal lengths;
- and
- diffracting or refracting the optical signal after the optical signal passes through the substrate, by the plurality of lenslets, to control a particular profile of a resultant beam of the optical signal.
A method of forming a light source, the method comprising:
- forming an optical element at a first surface of a substrate, the optical element being configured to transmit an optical signal through the substrate;
- and
- forming a diffuser at a second surface of the substrate opposite the first surface of the substrate by arranging a plurality of lenslets having a pseudorandom distribution of two or more focal lengths.
Dependencies are inferred from the claim text.