公开(公告)号：US11754767B1

公开(公告)日：2023-09-12

申请号：US17151170

申请日：2021-01-17

Applicant: Apple Inc.

Inventor： Yakov G. Soskind ,  Alexander Shpunt ,  Graham C. Townsend

IPC: F21V8/00 ,  G02B6/35 ,  G02B27/00 ,  H04N13/332

CPC classification number: G02B6/0016 ,  G02B6/35 ,  G02B27/0093 ,  H04N13/332 ,  H04N2213/001

Abstract: An optoelectronic device includes a display configured to emit first optical radiation in a first wavelength band through a front surface of the display. A planar optical waveguide, which is transparent in the first wavelength band, is overlaid on the display and is configured to guide second optical radiation in a second wavelength band along a direction transverse to the front surface. One or more diffractive structures are formed in the planar optical waveguide so as to couple the guided second optical radiation between the planar optical waveguide and a region in front of or behind the display.

公开(公告)号：US12111421B2

公开(公告)日：2024-10-08

申请号：US17549914

申请日：2021-12-14

Applicant: APPLE INC.

Inventor： Yakov G. Soskind ,  Alexander Shpunt ,  Graham C. Townsend

IPC: G01S7/484 ,  G01B11/22 ,  G01S17/89 ,  G02F1/21

CPC classification number: G01S7/484 ,  G01B11/22 ,  G01S17/89 ,  G02F1/216

Abstract: An optical transmission device includes a waveguide including a transparent medium having mutually-parallel first and second surfaces arranged so that light propagates within the waveguide by internal reflection between the first and second surfaces. At least one light source is configured to inject coherent light into the waveguide. A first array of diffractive structures is applied to the waveguide and configured to couple respective beams of the coherent light out through the first surface of the waveguide. The device includes a second array of tunable optical phase modulators, which are overlaid on respective ones of the diffractive structures in the first array and are configured to apply different respective phase shifts to the respective beams, thereby modulating a far-field light pattern formed by interference between the beams.

公开(公告)号：US20220299605A1

公开(公告)日：2022-09-22

申请号：US17549914

申请日：2021-12-14

Applicant: APPLE INC.

Inventor： Yakov G. Soskind ,  Alexander Shpunt ,  Graham C. Townsend

IPC: G01S7/484 ,  G02F1/21 ,  G01B11/22 ,  G01S17/89

Abstract: An optical transmission device includes a waveguide including a transparent medium having mutually-parallel first and second surfaces arranged so that light propagates within the waveguide by internal reflection between the first and second surfaces. At least one light source is configured to inject coherent light into the waveguide. A first array of diffractive structures is applied to the waveguide and configured to couple respective beams of the coherent light out through the first surface of the waveguide. The device includes a second array of tunable optical phase modulators, which are overlaid on respective ones of the diffractive structures in the first array and are configured to apply different respective phase shifts to the respective beams, thereby modulating a far-field light pattern formed by interference between the beams.