Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Marianne Consonni

Anis Daami

Adrien Gasse

Etienne Quesnel

Gilles Le Blevennec

Benoit Racine

Jérôme Hazart

Frédéric Sermet

Gilles Lerondel

Ludovic Dupre

Sylvia Meunier

Photo-emitting and/or photo-receiving diode array device, comprising:

Photo-emitting and/or photo-receiving diode array device

A device includes first and second electrodes that are at least partially transparent in a spectral domain; an electroluminescent layer that lies between the first and second electrodes suitable for emitting electromagnetic radiation in the spectral domain, the electromagnetic radiation being circularly polarized in a first polarization direction; a structured substrate, the first electrode lying between the structured substrate and the electroluminescent layer, the structured substrate including features that are reflective in the spectral domain, and that possess a hollow geometric shape configured so that electromagnetic radiation that passes through the first electrode is reflected from the reflective features while preserving the first polarization direction, a filler material that is transparent in the spectral domain and that is arranged to fill the reflective features so that the structured substrate has a planar surface.

Electroluminescent device

The invention relates to a directional lighting device () which comprises:

Directional lighting device

A method of adapting light extraction LEE from at least one light emitting diode with surface area S and perimeter P includes a step to encapsulate the light emitting diode with an encapsulation layer with a refraction index N, the refraction index N being determined based on a model taking account of an internal quantum efficiency of the light emitting diode. The extraction of light resulting from use of the encapsulation layer is such that the light emitting diode can achieve a predetermined external quantum efficiency.

Method of adapting light extraction from a light emitting diode

An optical coupler including a first surface intended to receive a light beam and a second surface intended to supply at least part of the light beam, and a lateral wall connecting the first surface to the second surface, the lateral wall successively including, between the first and second surfaces, a first concave portion and a first convex portion.

Optical coupler

The general field of the invention is that of devices for focusing light to subwavelength dimensions including at least one focusing structure having a metal film provided with a first aperture that penetrates the film, the aperture having dimensions an order of magnitude smaller than the working wavelength of the focusing device. In the devices according to the invention, the focusing structure has at least one optical cavity placed around the aperture so that, when the structure is illuminated with a radiant flux at the working wavelength of the device, a large part of this flux is concentrated on the aperture by said cavity. Several embodiments are described using various cavities that may comprise plasmon reflectors.

Growing community of inventors

Grenoble, France

Marianne Consonni