Optoelectronic device having controlled light emission profile

The use of photonic crystals in LED devices allows for direct control of light emission profiles and polarization, addressing the limitations of Lambertian LEDs by eliminating the need for additional optical elements and enabling dynamic illumination control.

WO2026131404A1PCT designated stage Publication Date: 2026-06-25ALEDIA INC
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
ALEDIA INC
Filing Date
2025-12-11
Publication Date
2026-06-25

AI Technical Summary

Technical Problem

Conventional LED devices emit light with a Lambertian profile, which is unsuitable for many applications requiring uniform illumination or specific angular and polarization control, and integrating optical elements to modify this profile is complex, expensive, and energy-inefficient.

Method used

An optoelectronic device using an array of photonic crystals with distinct elementary structures to emit light beams with controlled angular emission profiles and polarization, allowing direct generation of desired emission profiles without additional optical elements.

Benefits of technology

Enables efficient control of light emission profiles and polarization, reducing the need for additional optical elements, enabling dynamic control of illumination patterns and multiple display modes from a single device.

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Abstract

The invention relates to an optoelectronic device (1) comprising an assembly (10) of photonic crystals (100, 200, 300, 400) intended to emit a light beam mainly having a wavelength λ. This assembly comprises at least one first elementary photonic crystal (100) that comprises an assembly of first nanowires (101) and is configured to emit a first elementary light beam mainly having the wavelength λ, and a second elementary photonic crystal (200) that comprises an assembly of second nanowires (201) and is configured to emit a second elementary light beam mainly having the wavelength λ. The elementary photonic crystals (100, 200) have distinct structures, so as to give the elementary light beams at least one distinct optical characteristic. The light beam emitted by the photonic crystal assembly can be formed by the first elementary light beam and / or the second elementary light beam.
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