公开(公告)号：US20210318480A1

公开(公告)日：2021-10-14

申请号：US17034923

申请日：2020-09-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jong-Young Hong ,  Hoon Song ,  Jungkwuen An ,  Hongseok Lee

IPC: F21V8/00

Abstract: An optical device includes a first backlight configured to output first light of a first wavelength through a first output coupler, a first lens disposed to face the first output coupler and having a focal length with respect to the first light, a second backlight including a second output coupler, the second backlight being configured to output second light of a second wavelength through the second output coupler, a second lens disposed to face the second output coupler and having different focal lengths with respect to the first light and the second light, a third backlight including a third output coupler, the third backlight being configured to output third light of a third wavelength through the third output coupler, and a third lens disposed to face the third output coupler and having different focal lengths with respect to the first light, the second light, and the third light.

公开(公告)号：US11073794B2

公开(公告)日：2021-07-27

申请号：US16732928

申请日：2020-01-02

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  Korea University Research and Business Foundation, Sejong Campus

Inventor： Hoon Song ,  Hwi Kim ,  Jungkwuen An ,  Hongseok Lee ,  Yunhee Kim ,  Chilsung Choi

IPC: G06T3/40 ,  G03H1/22

Abstract: A holographic display apparatus capable of providing an expanded viewing window and a display method are provided. The holographic display apparatus includes an image processor configured to provide computer generated hologram (CGH) data to a spatial light modulator, wherein the image processor is further configured to generate a hologram data array comprising information of the holographic image to be reproduced at the first resolution or a resolution less than the first resolution, perform an off-axis phase computation on the hologram data array at the second resolution, and then, generate the CHG data at the first resolution.

公开(公告)号：US10802199B2

公开(公告)日：2020-10-13

申请号：US15691091

申请日：2017-08-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chilsung Choi ,  Sunil Kim ,  Hoon Song ,  Jungkwuen An ,  Hongseok Lee

IPC: G03H1/22 ,  G03H1/04 ,  G02B5/32 ,  F21V8/00 ,  G03H1/02 ,  G03H1/18 ,  G06F3/01

Abstract: A backlight device having a light guide, a first holographic optical element and a second holographic element are provided. The light guide plate guides light emitted by a light source towards the first holographic optical element. The first holographic optical element, which has a multi-layered structure, is provided on a first side of the light guide plate and reflects the light according to the wavelength ranges based on the characteristics of the multi-layered structure. The second holographic optical element, which concentrates light reflected by the first holographic optical element onto at least two points is provided on a second side of the light guide plate perpendicular to the first side.

公开(公告)号：US20200285110A1

公开(公告)日：2020-09-10

申请号：US16883596

申请日：2020-05-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kanghee WON ,  Young Kim ,  Hoon Song ,  Sunil Kim ,  Jungkwuen An ,  Sunghoon Lee ,  Hongseok Lee ,  Chilsung Choi

IPC: G02F1/1335 ,  G02F1/13363 ,  G02B5/30 ,  G03H1/22 ,  G02F1/29 ,  G02B30/25 ,  G02B30/56

Abstract: A beam deflector includes a first wavelength selective polarizer configured to convert a polarization state of light in a first wavelength band into a first polarization state, a first liquid crystal deflector including liquid crystal molecules and an optical path change surface to deflect light incident from the first wavelength selective polarizer, and a controller configured to control the first liquid crystal deflector to adjust an angle of the first optical path change surface.

公开(公告)号：US20200166764A1

公开(公告)日：2020-05-28

申请号：US16591152

申请日：2019-10-02

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

Inventor： Changkun LEE ,  Seokil Moon ,  Byoungho Lee ,  Wontaek Seo ,  Geeyoung Sung ,  Hongseok Lee

IPC: G02B27/22 ,  G02B3/10 ,  G02B27/10

Abstract: Provided is a multi-image display apparatus including an image forming device configured to form a first image, a first polarization plate configured to transmit a first polarization component of the first image provided from the image forming device, a second polarization plate configured to transmit a second polarization component of a second image that is provided from a path different from the first image, the second polarization component being different from the first polarization component, a screen configured to reflect and diffuse the first image, and transmit the second image, and a polarization selective lens configured to focus the first image having the first polarization component, and transmit the second image having the second polarization component without refraction.

公开(公告)号：US10585330B2

公开(公告)日：2020-03-10

申请号：US15863453

申请日：2018-01-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Young Kim ,  Alexander V. Morozov ,  Hoon Song ,  Kanghee Won ,  Hongseok Lee

IPC: G02F1/31 ,  G02B27/22 ,  G02F1/1343

Abstract: A liquid crystal light deflector includes a first electrode layer including line electrodes, a second electrode layer including a common electrode, and a liquid crystal layer that forms an electrical prism using liquid crystal molecules according to an electric field formed between the first and second electrode layers. The orientations of the liquid crystal molecules may be reset by an electric field formed between line electrodes of adjacent channels within the first electrode layer. A method of deflecting light includes controlling the first electrode layer and the second electrode layer to reset the orientation of the liquid crystal molecules prior to forming an electrical prism in the liquid crystal layer.

公开(公告)号：US20200041958A1

公开(公告)日：2020-02-06

申请号：US16596933

申请日：2019-10-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Wontaek Seo ,  Hongseok Lee ,  Juwon Seo ,  Hoon Song ,  Jungkwuen An

IPC: G03H1/22 ,  G03H1/26 ,  G03H1/04 ,  G03H1/08

Abstract: Provided is a holographic display apparatus including a light source configured to emit light; a spatial light modulator configured to sequentially generate hologram patterns for modulating the light and to sequentially reproduce frames of hologram images based on the hologram patterns; and a controller configured to provide hologram data signals to the spatial light modulator, the hologram data signals being used to sequentially generate the hologram patterns. The controller is configured to further provide, to the spatial light modulator, diffraction pattern data signals for forming periodic diffraction patterns for adjusting locations of the hologram images to be reproduced on a hologram image plane, the diffraction pattern data signals being configured to move the periodic diffraction patterns on the spatial light modulator along a predetermined direction for each of the frames.

公开(公告)号：US10551795B2

公开(公告)日：2020-02-04

申请号：US15169849

申请日：2016-06-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Geeyoung Sung ,  Jungkwuen An ,  Hongseok Lee

IPC: G03H1/26 ,  G03H1/02 ,  G03H1/04

Abstract: A spatial light modulator providing an expanded viewing window and a holographic display apparatus including the spatial light modulator are provided. The spatial light modulator includes a mask member having a periodic pattern that is arranged to split an area of each of a plurality of pixels into at least two portions such that a space between lattice spots formed by a period structure of the spatial light modulator increases.

公开(公告)号：US20200012092A1

公开(公告)日：2020-01-09

申请号：US16233980

申请日：2018-12-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hoon SONG ,  Hongseok Lee ,  Young Kim ,  Jungkwuen An ,  Kanghee Won ,  Chilsung Choi

IPC: G02B27/00 ,  G02B7/09 ,  G03H1/22

Abstract: A holographic display device includes a light source configured to emit light, the light including first light of a first wavelength, second light of a second wavelength, and third light of a third wavelength; a spatial light modulator configured to form a holographic pattern to modulate the light emitted from the light source and to produce a holographic image; and a focusing optical system configured to focus the holographic image. The focusing optical system includes a fixed-focus optical system having a fixed focal length, and a variable focus optical system having a focal length that is changed by electrical control. The fixed-focus optical system is configured to focus the first light of the first wavelength, the second light of the second wavelength, and the third light of the third wavelength on different positions, respectively, on an optical axis to cancel a chromatic aberration by the variable focus optical system.

公开(公告)号：US20190339647A1

公开(公告)日：2019-11-07

申请号：US16514253

申请日：2019-07-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yunhee KIM ,  German B. Dubinin ,  Alexander V. Morozov ,  Sunil Kim ,  Hoon Song ,  Jungkwuen An ,  Young Kim ,  Hongseok Lee ,  Chilsung Choi

IPC: G03H1/22 ,  F21V8/00 ,  G02F1/29 ,  G02B27/14 ,  G02B27/09

Abstract: A backlight unit for a binocular-holographic display device and a holographic display device including the same are provided. The backlight unit includes a light source unit which outputs light, a first beam expansion unit which expands, in a first direction, the light output from the light source unit, a second beam expansion unit which expands, in a second direction perpendicular to the first direction, the light output from the first beam expansion unit, and a beam deflection unit which diffracts light incident on the first beam expansion unit. The holographic display device includes the backlight unit, a field lens, and a spatial light modulator.