公开(公告)号：US12050329B2

公开(公告)日：2024-07-30

申请号：US17280768

申请日：2019-09-27

Applicant: InterDigital CE Patent Holdings

Inventor： Laurent Blonde ,  Mitra Damghanian ,  Valter Drazic ,  Bobin Varghese

IPC: G02B5/18

CPC classification number: G02B5/1809 ,  G02B2207/101

Abstract: A device (200) is proposed comprising a first part (101) of a first material having a first refractive index n1 and a second part (102) of a second material having a second refractive index n2 higher than n1. Such device further comprises at least one contact area (110) in between the first and second parts, radiating an outgoing electromagnetic wave (100o) when the device is illuminated by an incoming electromagnetic wave (100i). 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 n2 and the first refractive index n1.

公开(公告)号：US20230290796A1

公开(公告)日：2023-09-14

申请号：US18017257

申请日：2021-07-22

Applicant: InterDigital CE Patent Holdings, SAS

Inventor： Bobin Varghese ,  Oksana Shramkova ,  Laurent Blonde ,  Valter Drazic

IPC: H01L27/146

CPC classification number: H01L27/14621 ,  H01L27/14636 ,  H01L27/14643

Abstract: In example embodiments, an optical component includes a dielectric structure having a substantially rectangular cross-section with an upper surface and a lower surface. A first electrically conducting layer is provided on the upper surface, where the first electrically conducting layer has a first opening positioned to accept incoming electromagnetic radiation. The second electrically conducting layer has a second opening positioned to emit electromagnetic radiation, e.g. toward a CMOS sensor pixel in a silicon substrate. The dimensions of the optical component are configured to provide constructive interference for incident radiation of a selected wavelength.

公开(公告)号：US20240094537A1

公开(公告)日：2024-03-21

申请号：US18272991

申请日：2022-01-20

Applicant: INTERDIGITAL CE PATENT HOLDINGS, SAS

Inventor： Valter Drazic ,  Oksana Shramkova ,  Bobin Varghese ,  Valerie Allie

IPC: G02B27/01 ,  F21V8/00

CPC classification number: G02B27/0172 ,  G02B6/0026 ,  G02B27/0081

Abstract: In example embodiments, a waveguide display apparatus includes a waveguide comprising a substrate, a plurality of diffractive grating elements on the waveguide, and at least two coating layers on the waveguide between the substrate and the diffractive grating elements. The grating elements may be elements of a diffractive in-coupler. Some embodiments include three coating layers, with a middle layer having a refractive index greater than that of the substrate, the middle layer being between two layers having a refractive index lower than that of the substrate. Some embodiments further include a fourth coating layer.