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Interdigital Madison Patent Holdings

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Thomson Licensing S.a.

Deutsche Thomson-brandt Gmbh

Thomson Licensing Dtv

Laurent Blonde

Valter Drazic

Didier Doyen

Artem Boriskin

Jurgen Stauder

Paul Kerbiriou

Mitra Damghanian

Guillaume Boisson

Oksana Shramkova

Mozhdeh Seifi

Patrick Morvan

Jürgen Stauder

Arno Schubert

Olivier Bureller

Sylvain Thiebaud

Thierry Borel

Julien Thollot

Wolfgang Endress

Jonathan Kervec

Benoit Vandame

Khaled Sarayeddine

Ingo Tobias Doser

David J Bancroft

Cyril Vienne

Edouard Francois

David Touze

Thierry Tapie

Philippe Robert

Cedric Thebault

Christel Chamaret

Emmanuel Jolly

Erik Reinhard

Pascal Bourdon

Hassane Guermoud

Bongsun Lee

Michel Kerdranvat

Joel Sirot

Jérôme Vieron

Thierry Viellard

Edouard François

Luis Montalvo

Claire-Helene Demarty

Eric Auffret

Pierre Alfred David

David Sahuc

Abhijit Sarkar

Milos Radosavljevic

Zoubida Ameur

Marine Le Breton

Bobin Varghese

Laurent Bizos

Thai-Quan Huynh-Thu

Kervec Jonathan

Dar'ya Khaustova

Virginie Hallier

Djibril Coulibaly

Remi Gendrot

Ingo Doser

Pierre David

Thai Q Huynh-Thu

Carolone Moine

A method and device for reducing power consumption of display devices proposes to reduce the total amount of light emitted in a perceptually indistinguishable manner based on the on the human visual sensitivity at the position of a pixel. The visibility of the processing can be made to remain provably below threshold, whereas other techniques may not be able to provide such proof. This is achieved by determining a minimum detectable modulation or a corresponding just-noticeable difference based on frequency intensity information for a pixel representative of how much there is of a set of frequencies at the pixel and a contrast sensitivity function representative of a model of human vision that predicts which contrasts at which frequencies are visible to the human eye. Pixel values may be reduced based on this minimum detectable modulation or just-noticeable difference. The contrast sensitivity function may be given by Barten's model and the frequency intensity information may be based on a hierarchical map built using a discrete wavelet transform or a continuous wavelet transform.

Pixel modification to reduce energy consumption of a display device

There are several types of plenoptic devices having their proprietary file format. At present there is no standard supporting the acquisition and transmission of multi-dimensional information for an exhaustive over-view of the different parameters upon which a light-field depends. As such acquired light-field data for different cameras have a diversity of formats. The notion of pixel beam, which represents a volume occupied by a set of rays of light in an object space of an optical system of a camera is thus introduced. The method according to the invention enables to provide data representative of a collection of pixel beams describing a first optical system that is agnostic since these data are obtained by imaging the collection of pixel beams through a second optical system. Such data representative of a collection of pixel beams enable the generation of parameterized output images from which post-processing.

Apparatus and a method for generating data representative of a pixel beam

An optically-transparent device () is disclosed which comprises a main part () of dielectric material having a refractive index n, said device being configured for forming a field intensity distribution in a near zone of said device from electromagnetic waves incidentally illuminating said device, when said device is embedded into a dielectric material having a refractive index nlower than said refractive index n. Said device () further comprises at least one insert () of dielectric material having a refractive index nhigher than said refractive index n, said at least one insert being at least partly inserted into said main part, said refractive index nbeing different from said refractive index n, and wherein Formula (I) with Wbeing a half width of said insert and Formula (II), Formula (III) with Wbeing a half width of said main part and Formula (IV), with λ being the wavelength of the electromagnetic wave propagating in the dielectric material having refractive index n.

Device for near-field focusing and beam forming

A device configured for radiating a focused electromagnetic beam is proposed. Such device comprises: —a first () and a second () part having respectively a second nand third nrefractive index and a first Wand second W; —a first contact area () intended to be between a host medium having a first refractive index nand in which the micro or nanoparticles are intended to be trapped or moved by a focused electromagnetic beam radiated by the device; —a second contact area () between the first part and the second part; and —a third contact area () intended to be between the second part and the host medium. The focused electromagnetic beam results from a combination of at least two beams among a first (NJ), a second (NJ) and a third (NJ) jet beams radiated respectively by the first, second and third contact areas when an incoming electromagnetic wave (IEM) illuminates the device. The device is configured for having a direction of propagation of the focused electromagnetic beam tilted in respect of a direction of propagation of the incoming electromagnetic wave.

Optical manipulation apparatus

A device () is proposed comprising a first part () of a first material having a first refractive index nand a second part () of a second material having a second refractive index nhigher than n. Such device further comprises at least one contact area () in between the first and second parts, radiating an outgoing electromagnetic wave () when the device is illuminated by an incoming electromagnetic wave (). A projection of the at least one contact area along a direction of propagation of the incoming electromagnetic wave has a non-vanishing height lower than 1.2 times a critical height equal to a wavelength in vacuum of the incoming electromagnetic wave divided by the difference between the second refractive index nand the first refractive index n

Device for radiating at least one outgoing electromagnetic wave when illuminated by an incoming electromagnetic wave

It is proposed an image sensor comprising pixels for acquiring color information from incoming visible light, wherein said image sensor comprising three pixels being partially covered by a color splitter structure for deviating only one color channel of said incoming visible light towards one of said three pixels, and for deviating other colors of said incoming visible light towards the other pixels among said three pixels. The color splitter structure comprises a first (), a second () and a third () parallelepiped structures arranged so that the first and the third parallelepiped structures are side by side and in contact with the second parallelepiped structure, and wherein the first and the third parallelepiped structures have same dimensions, and are made of a same dielectric material, with a refractive index n, and wherein said second parallelepiped structure being smaller in height (H) compared to said first and third parallelepiped structures (H), and wherein said second parallelepip ed structure being made of a dielectric material with a refractive index n L, and wherein the refractive index n H is greater than the refractive index n L.

Image sensor comprising a color splitter with two different refractive indexes, and different height

A device includes a host medium having a first refractive index value; a first layer comprising a first dielectric material having a second refractive index value, wherein the second refractive index value is greater than the first refractive index value, and wherein the first layer comprises a first step structure at a boundary between the first layer and the host medium; and a second layer comprising a second dielectric material and comprising a second step structure, the second layer having a third refractive index value higher than the first refractive index value of the host medium, wherein the second step structure is stacked on the first step structure, and, in response to an incident electromagnetic wave reaching the device, a first nanojet beam generated by the first step structure and a second nanojet beam generated by the second step structure are combined and focused around a first focusing point.

Device for deviating and focusing light

A method for presenting an image on a display device () includes modifying the image by applying a geometric transformation to the image so that an area of the image on the display device is presented to a viewer with higher density of pixels than that in the rest of the image (S).

Method and a display device with pixel repartition optimization

A diffraction grating includes a plurality of grating unit cells positioned in a periodic array on a substrate surface. In cross-section, a grating unit cell includes a homogeneous dielectric host medium with a first refractive index n, embedding at least a first block of a first dielectric material with a second refractive index n, a side edge of which is in direct contact with at least a second block of a second dielectric material with a third refractive index n. Both the first block and the second block have a trapezoidal cross-section. The plurality of grating unit cells provides a non-symmetrical response for positive first diffraction order and negative first diffraction order based on nanojet hot spot positions, the nanojets being generated at edges between dielectric materials with different refractive indexes.

Diffraction grating comprising double-materials structures

The present disclosure concerns an image sensor comprising a set of pixels, wherein each pixel of the set comprises a first and a second element, the first element comprising a photodiode module unit, and the second element being an element for filtering color and focusing incident light into said first element. The image sensor further comprises at least two consecutive pixels from the set of pixels, for which first elements are put side by side, and wherein the image sensor comprises a gap between second elements of said at least two consecutive pixels.

Image sensor comprising pixels for preventing or reducing the crosstalk effect

A device for forming at least one focused beam in a near-field zone, from an electromagnetic wave incident on the device, is remarkable in that it comprises at least one layer of dielectric material comprising at least partially at least one cavity, the at least one cavity being filled in with a medium having a refractive index lower than that of the dielectric material. The at least one cavity is targeted to be cylindrical or cone-shaped and comprises at least one base surface, defined with respect to an arrival direction of the electromagnetic wave, and at least one lateral surface. The at least one base surface is delineated by a base edge line which has a shape of a crescent moon, comprising a concave base edge line segment and a convex base edge line segment, which shape, and/or orientation and/or associated base angles between the at least one base surface and the at least one lateral surface control an angular position of a projection of the at least one focused beam on a plane orthogonal to the arrival direction of the electromagnetic wave and comprising at least part of the at least one base surface, called an azimuth angle.

Device for forming at least one tilted focused beam in the near zone, from incident electromagnetic waves

The present disclosure concerns a device for forming a field intensity pattern in the near zone, from electromagnetic waves which are incident on said device. Notably, such a device allows confining electromagnetic waves, which are incident on the device, into beams of radiation in the near zone. It comprises at least one layer of dielectric material, which surface has at least one abrupt change of level forming a step. A lower and lateral part of said surface with respect to said step is in contact with a substance having a refractive index lower than that of said dielectric material. For an incident electromagnetic wave impinging upon the device in the vicinity of such a step, the corresponding step of index it encounters produces a complex electromagnetic phenomenon, which allows generating low-dispersive condensed beams and specific field patterns in the near zone.

Device for forming a field intensity pattern in the near zone, from incident electromagnetic waves

There are several types of plenoptic devices having their proprietary file format. At present there is no standard supporting the acquisition and transmission of multidimensional information for an exhaustive over-view of the different parameters upon which a light-field depends. As such acquired light-field data for different cameras have a diversity of formats. The notion of pixel beam, which represents a volume occupied by a set of rays of light in an object space of an optical system of a camera is thus introduced. The method according to the invention enables to provide data representative of a collection of pixel beams describing a first optical system that is agnostic since these data are obtained by imaging the collection of pixel beams through a second optical system. Such data representative of a collection of pixel beams enable the generation of parametrized output images from which post-processing.

A device for shielding a sub-wavelength-scale object from an electromagnetic wave incident on the device. The device includes a layer of dielectric material, a surface of which has a change of level forming a step. The step is in contact with a medium having a refractive index that is lower than a refractive index of the dielectric material. The sub-wavelength-scale object is located within the device in a quiet zone where an electromagnetic field intensity is below a threshold, the quiet zone extending above said surface, in a vicinity of the step, in a direction of incidence of said incident electromagnetic wave.

Device and method for shielding at least one sub-wavelength-scale object from an incident electromagnetic wave

The present disclosure concerns a device for forming a field intensity distribution in the near zone, from a propagating electromagnetic waves which are incident on said device. The device comprises:

Device for forming nanojet beams in a near zone, from incident electromagnetic waves

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Thorigne-Fouillard, France

Laurent Blonde