Abstract: Photo-emitting and/or photo-receiving diode array device, comprising: a stack of first and second semiconductor layers doped according to different types; first trenches passing through the stack and surrounding a region of the stack wherein several diodes are formed; dielectric portions arranged in the first trenches and covering lateral flanks of said region over the entire thickness of the second layer and a first part of the thickness of the first layer; first electrically conductive portions arranged in the first trenches and covering the lateral flanks of said region over a second part of the thickness of the first layer, and forming first electrodes of the diodes of said region; at least one second trench partially passing through the first layer and separating the portions of the first layer from the diodes of said region.

Abstract: 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.

Abstract: The invention relates to a directional lighting device (10) which comprises: a light emission source (30); a cover (40) covering the light emission source (30), and provided with an inner wall (41) and an outer wall (42) which delimit an inter-wall space (44), and filled with a fluid, the cover (40) comprising transmission zones (45), each formed of an inner zone (45a) and an outer zone (45b), facing one another, and at which an electric field is capable of being applied to the functional fluid by means of a first electrode (46a) and a second electrode (46b), the functional fluid being adapted to, under the effect of an electric field sensed at a given transmission zone, form with the latter a window transparent to the luminous radiation, and be either opaque or reflective and/or diffusive to said radiation in the remainder of the inter-wall volume (43).

Abstract: Photo-emitting and/or photo-receiving diode array device, comprising: a stack of first and second semiconductor layers doped according to different types; first trenches passing through the stack and surrounding a region of the stack wherein several diodes are formed; dielectric portions arranged in the first trenches and covering lateral flanks of said region over the entire thickness of the second layer and a first part of the thickness of the first layer; first electrically conductive portions arranged in the first trenches and covering the lateral flanks of said region over a second part of the thickness of the first layer, and forming first electrodes of the diodes of said region; at least one second trench partially passing through the first layer and separating the portions of the first layer from the diodes of said region.

Abstract: 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.

Abstract: 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.

Abstract: The invention relates to a directional lighting device (10) which comprises: a light emission source (30); a cover (40) covering the light emission source (30), and provided with an inner wall (41) and an outer wall (42) which delimit an inter-wall space (44), and filled with a fluid, the cover (40) comprising transmission zones (45), each formed of an inner zone (45a) and an outer zone (45b), facing one another, and at which an electric field is capable of being applied to the functional fluid by means of a first electrode (46a) and a second electrode (46b), the functional fluid being adapted to, under the effect of an electric field sensed at a given transmission zone, form with the latter a window transparent to the luminous radiation, and be either opaque or reflective and/or diffusive to said radiation in the remainder of the inter-wall volume (43).

Abstract: 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.

Abstract: The invention relates to a method of adapting light extraction LEE from at least one light emitting diode (10) with surface area S and perimeter P, the method being characterised in that it comprises a step to encapsulate the light emitting diode with an encapsulation layer (12) with a refraction index N, the refraction index N being determined based on a model taking account of an internal quantum efficiency IQE of the light emitting diode, and such that extraction of light resulting from use of the encapsulation layer is such that the light emitting diode can achieve a predetermined external quantum efficiency EQEK.

Abstract: 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.

Abstract: 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.

Abstract: 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.