公开(公告)号：US20200073031A1

公开(公告)日：2020-03-05

申请号：US16557421

申请日：2019-08-30

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  The Board of Trustees of the Leland Stanford Junior University

Inventor： Brandon BORN ,  Mark L. BRONGERSMA ,  Sunghoon LEE

IPC: G02B5/18

Abstract: Provided are a diffraction grating device, a method of manufacturing the diffraction grating device, and an optical apparatus including the diffraction grating device. The diffraction grating device includes a diffraction grating arranged on a light reflection substrate. The diffraction grating includes a plurality of diffraction elements, each diffraction element from among the plurality of diffraction elements having a height that causes a destructive interference between first light rays reflected by a top surface therefore and second light rays reflected by a bottom surface thereof, the first and second light rays being incident on the top and bottom surfaces, respectively, at an incidence angle greater than 45°.

公开(公告)号：US20190113761A1

公开(公告)日：2019-04-18

申请号：US15937288

申请日：2018-03-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sunil KIM ,  Chilsung CHOI ,  Hoon SONG ,  Jungkwuen AN ,  Sunghoon LEE

IPC: G02B27/09 ,  G02B27/30 ,  F21V8/00

Abstract: A beam expander and a displays including the beam expander are provided. The beam expander includes a holographic optical element (HOE) configured to generate collimated light by diffracting incident light incident thereon from a light source that emits coherent light. The beam expander also includes a diffraction optical element that diffracts light received from the HOE. The light source and the HOE may face each other with the diffraction optical element therebetween. Both the light source and the HOE may be arranged on a side of the diffraction optical element. The light source may be arranged above or below the diffraction optical element.

公开(公告)号：US20180210130A1

公开(公告)日：2018-07-26

申请号：US15870291

申请日：2018-01-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sunghoon LEE ,  Joonyong PARK ,  Dongouk KIM ,  Jihyun BAE ,  Bongsu SHIN ,  Dongsik SHIM ,  Jaeseung CHUNG

IPC: F21V8/00 ,  G02B27/22 ,  G03H1/26

Abstract: An input coupler includes: a plurality of semi-reflectors located along an optical path along which a light incident from a light source travels, each of the plurality of semi-reflectors comprising a reflective surface that is inclined with respect to the optical path and configured to reflect a first portion of the light and transmit a second portion of the light; and a plurality of optical path changing members configured to change an optical path of the light transmitted through the plurality of semi-reflectors, wherein the plurality of semi-reflectors and the plurality of optical path changing members are arranged such that the light passing through at least one of the plurality of semi-reflectors and emitted in one direction has a linear beam distribution.

公开(公告)号：US20180128962A1

公开(公告)日：2018-05-10

申请号：US15656349

申请日：2017-07-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hyunjoon KIM ,  Bongsu SHIN ,  Dongouk KIM ,  Joonyong PARK ,  Jihyun BAE ,  Dongsik SHIM ,  Sunghoon LEE ,  Jaeseung CHUNG ,  Seokho SONG

IPC: F21V8/00

CPC classification number: G02B6/0061 ,  G02B6/0035 ,  G02B6/0036 ,  G02B6/005 ,  G02B6/0068

Abstract: A directional backlight unit and an image display apparatus including the directional backlight unit are provided. The directional backlight unit includes at least one light source and a light guide plate that guides light emitted by the light source. An interval between grating patterns formed on the light guide plate satisfies at least one condition of a first range and a second range in order to minimize a spreading of light caused by the grating patterns.

公开(公告)号：US20180113250A1

公开(公告)日：2018-04-26

申请号：US15440535

申请日：2017-02-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sunghoon LEE ,  Joonyong PARK ,  Bongsu SHIN ,  Dongouk KIM ,  Jihyun BAE ,  Dongsik SHIM ,  Jaeseung CHUNG

IPC: F21V8/00 ,  G02F1/1335 ,  G02B5/30

CPC classification number: G02F1/133504 ,  G02B5/3058 ,  G02B6/005 ,  G02B6/0056 ,  G02F1/133528 ,  G02F2001/133548 ,  G02F2001/133626

Abstract: A three-dimensional (3D) image display apparatus includes a directional backlight unit and a display panel. The 3D image display apparatus may include an absorptive wire grid polarizer in the directional backlight unit or the display panel, for minimizing a distance between a diffraction device of the directional backlight unit and a pixel of the display panel.

公开(公告)号：US20170059961A1

公开(公告)日：2017-03-02

申请号：US15213792

申请日：2016-07-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Joonyong PARK ,  Dongouk KIM ,  Hyunjoon KIM ,  Jihyun BAE ,  Alexander V. MOROZOV ,  Bongsu SHIN ,  Sunghoon LEE ,  Changsoo LEE ,  Jaeseung CHUNG

IPC: G02F1/31 ,  F21V8/00

CPC classification number: G02F1/31 ,  G02B3/12 ,  G02B6/003 ,  G02B6/0051 ,  G02B6/0068 ,  G02B27/22 ,  G02B27/225 ,  G02F1/1323 ,  G02F1/1334 ,  G02F1/133621 ,  G02F1/136 ,  G02F1/29 ,  H04N13/00 ,  H04N13/305 ,  H04N13/359 ,  H04N13/398 ,  H04N2213/001

Abstract: Provided are a lighting system, a backlight unit and a 3D image display apparatus including the backlight unit. The backlight unit includes: a lighting system configured to selectively output collimated light and diverging light, a diffraction device, and a light guide plate configured to guide the collimated light and the diverging light from the lighting system to the diffraction device. An exit direction of the collimated light from the diffraction device depends on at least one of an angle of incidence of the collimated light and the wavelength of the collimated light.

Abstract translation: 提供了一种照明系统，背光单元和包括背光单元的3D图像显示装置。 背光单元包括：被配置为选择性地输出准直光和发散光的照明系统，衍射装置和导光板，所述衍射装置和导光板被配置为将来自照明系统的准直光和发散光引导到衍射装置。 来自衍射装置的准直光的出射方向取决于准直光的入射角和准直光的波长中的至少一个。