公开(公告)号：WO2022096588A1

公开(公告)日：2022-05-12

申请号：PCT/EP2021/080665

申请日：2021-11-04

Applicant: INTERDIGITAL CE PATENT HOLDINGS, SAS

Inventor： SHRAMKOVA, Oksana ,  ALLIE, Valérie ,  DRAZIC, Valter

IPC: G02B27/01 ,  F21V8/00

Abstract: Example embodiments include an optical system comprising a waveguide substrate. A diffractive coupler is associated with the waveguide substrate, the diffractive coupler comprising at least two diffraction gratings. Each of the diffraction gratings includes a first layer of grating elements and a second layer of grating elements, the first and second layers of grating elements being arranged in different planes. The first and second layers of grating elements each have a grating period associated with the respective diffraction grating, and the grating elements of the second layer have a lateral offset with respect to the grating elements of the first layer.

公开(公告)号：WO2022034060A1

公开(公告)日：2022-02-17

申请号：PCT/EP2021/072246

申请日：2021-08-10

Applicant: INTERDIGITAL CE PATENT HOLDINGS, SAS

Inventor： DRAZIC, Valter ,  SHRAMKOVA, Oksana

IPC: G02B27/01 ,  G02B27/42 ,  G02B27/00

Abstract: Embodiments include an optical system that may be included in a waveguide display. A waveguide apparatus according to some embodiments includes an in-coupler grating having a first grating vector G1 substantially perpendicular to a first axis, x; a first eye pupil expander grating having a second grating vector G2 and a first angle ΦG with respect to the first axis; a second eye pupil expander grating having a third grating vector G3 and an angle substantially equal to 90° + ΦG with respect to the first axis; and an out-coupler grating having a fourth grating vector G4 substantially perpendicular to the first axis. Example embodiments describe relationships among the grating vectors, the angle ΦG, and associated parameters to achieve a satisfactory field of view while reducing distortion.

公开(公告)号：WO2023061919A1

公开(公告)日：2023-04-20

申请号：PCT/EP2022/078068

申请日：2022-10-10

Applicant: INTERDIGITAL CE PATENT HOLDINGS, SAS

Inventor： SHRAMKOVA, Oksana ,  DRAZIC, Valter ,  BOURCIN, Guillaume

IPC: G02B27/00 ,  G02B27/01 ,  G02B5/18

Abstract: In example embodiments, a waveguide apparatus is provided that may be used in a display device. The waveguide includes an in-coupler, an out-coupler, and at least a first eye-pupil expander along a first optical path from the in-coupler to the out-coupler. The in-coupler comprises a first diffraction grating and a second diffraction grating overlaying the first diffraction grating, wherein grating lines of the first and second diffraction gratings are parallel to one another. The first eye-pupil expander comprises a third diffraction grating and a fourth diffraction grating overlaying the third diffraction grating. The out-coupler comprises a fifth diffraction grating and a sixth diffraction grating overlaying the fifth diffraction grating.

公开(公告)号：WO2022268954A1

公开(公告)日：2022-12-29

申请号：PCT/EP2022/067177

申请日：2022-06-23

Applicant: INTERDIGITAL CE PATENT HOLDINGS, SAS

Inventor： DRAZIC, Valter ,  BRAC DE LA PERRIERE, Vincent

IPC: G02B27/00 ,  G02B27/42 ,  G02B27/01 ,  G02B2027/0123 ,  G02B2027/0134 ,  G02B2027/0174 ,  G02B2027/0178 ,  G02B27/0081 ,  G02B27/4205 ,  G02B27/4272

Abstract: In example embodiments, an apparatus includes a waveguide having an in-coupler, an out-coupler, and at least one exit pupil expander along an optical path from the in-coupler to the out-coupler. A holographic optical element is provided on a surface of the waveguide substantially opposite the exit pupil expander. The holographic optical element being configured to selectively reflect light having a first characteristic and to selectively transmit light that does not have the first characteristic. The first characteristic may include light having an incident angle greater than a threshold angle, light having a propagation direction along the optical path from the in-coupler to the out-coupler, and/or light having a selected wavelength.

公开(公告)号：WO2022023185A1

公开(公告)日：2022-02-03

申请号：PCT/EP2021/070613

申请日：2021-07-22

Applicant: INTERDIGITAL CE PATENT HOLDINGS, SAS

Inventor： VARGHESE, Bobin ,  SHRAMKOVA, Oksana ,  BLONDE, Laurent ,  DRAZIC, Valter

IPC: G01J1/04 ,  H01L27/146 ,  G02B5/00 ,  G02B5/28 ,  G01J1/44

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：WO2022002990A1

公开(公告)日：2022-01-06

申请号：PCT/EP2021/067931

申请日：2021-06-29

Applicant: INTERDIGITAL CE PATENT HOLDINGS, SAS

Inventor： SHRAMKOVA, Oksana ,  DRAZIC, Valter

IPC: G02B27/01 ,  F21V8/00 ,  G02B2027/0109 ,  G02B2027/0112 ,  G02B2027/0123 ,  G02B27/0172 ,  G02B6/0016 ,  G02B6/0036 ,  G02B6/0076

Abstract: In example embodiments, an optical system includes a waveguide having a first surface and a second surface substantially opposite the first surface. A reflective diffractive in-coupler is provided in the waveguide between the first and second surfaces for coupling blue light. A first transmissive diffractive in- coupler is provided in the waveguide between the reflective diffractive in-coupler and the second surface for coupling red light. Some embodiments further include a second transmissive diffractive in-coupler on the first surface for coupling blue light at high incident angles. Green light may be coupled by one or more of the in-couplers. The waveguide may further be provided with corresponding diffractive out-couplers for use in a waveguide display system.

公开(公告)号：WO2021191132A1

公开(公告)日：2021-09-30

申请号：PCT/EP2021/057234

申请日：2021-03-22

Applicant: INTERDIGITAL CE PATENT HOLDINGS, SAS

Inventor： SHRAMKOVA, Oksana ,  DRAZIC, Valter ,  ALLIE, Valerie

IPC: G02B27/01 ,  G02B2027/0112 ,  G02B2027/0123 ,  G02B2027/0174 ,  G02B27/0172

Abstract: Embodiments include an optical system that may be included in a waveguide display. An example optical system includes a first waveguide having a first transmissive diffractive in-coupler (DG1) and a first diffractive out-coupler (DG6) and a second waveguide having a second transmissive diffractive in-coupler (DG2), a reflective diffractive in-coupler (DG3), a second diffractive out-coupler (DG4), and a third diffractive out-coupler (DG5). The second transmissive diffractive in-coupler (DG2) is arranged between the first transmissive diffractive in-coupler (DG1) and the reflective diffractive in-coupler (DG3) in an input region.

公开(公告)号：WO2022233763A1

公开(公告)日：2022-11-10

申请号：PCT/EP2022/061660

申请日：2022-05-02

Applicant: INTERDIGITAL CE PATENT HOLDINGS, SAS

Inventor： DOYEN, Didier ,  DRAZIC, Valter ,  BRAC DE LA PERRIERE, Vincent ,  BOISSON, Guillaume

IPC: H04N19/597 ,  G03H1/08 ,  H04N19/70

Abstract: Methods and apparatuses for encoding/decoding data content representative of a volumetric video are provided, wherein, the encoding/decoding comprises encoding in/decoding from a bitstream, an indicator specifying whether data content has information representative of at least one set of depth layers, the information representative of a set of depth layers specifying a number of depth layers and a depth value for each of the depth layers for a layer-based representation of the volumetric video. Methods and apparatuses for reconstructing Computer Generated Holograms from a reconstructed layered-based representation of the volumetric video are also provided.

公开(公告)号：WO2022034011A1

公开(公告)日：2022-02-17

申请号：PCT/EP2021/072141

申请日：2021-08-09

Applicant: INTERDIGITAL CE PATENT HOLDINGS, SAS

Inventor： DRAZIC, Valter ,  ALLIE, Valerie

IPC: G02B27/01

Abstract: Example embodiments include a display apparatus having an image generator, a waveguide having an in- coupler and an out-coupler, and a prism or other light-deflecting component along an optical path between the image generator and the in-coupler. The image generator may have an optical axis that is not normal to the waveguide, and the waveguide may not be normal to a line of sight. The prism may be configured to deflect light such that light emitted along the optical axis is deflected to a direction such that the light from the optical axis is out-coupled at a direction substantially parallel to the line of sight. The non-normal arrangement of the image generator and line of sight with respect to the waveguide may allow a glasses- like display to better accommodate the form of a user's head.

公开(公告)号：WO2021204656A1

公开(公告)日：2021-10-14

申请号：PCT/EP2021/058583

申请日：2021-04-01

Applicant: INTERDIGITAL CE PATENT HOLDINGS, SAS

Inventor： DRAZIC, Valter ,  SHRAMKOVA, Oksana

IPC: G02B27/01 ,  G02B27/28

Abstract: Embodiments include an optical system that may be included in a waveguide display. An example apparatus includes an image generator configured to generate an image having an upper portion and a lower portion. A waveguide is provided with an in-coupler and an out-coupler, the in-coupler being arranged to couple the upper and lower portions of the image along an optical path to the out-coupler. Along the optical path, at least first and second polarization-selective diffraction gratings are configured to cooperatively direct the upper portion of the image toward the out-coupler. At least third and fourth polarization-selective diffraction gratings are configured to cooperatively direct the lower portion of the image toward the out-coupler.