公开(公告)号：US20240125902A1

公开(公告)日：2024-04-18

申请号：US18219448

申请日：2023-07-07

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  POSTECH Research and Business Development Foundation

Inventor： Sunil KIM ,  Junsuk RHO ,  Younghwan YANG ,  Junghyun PARK

IPC: G01S7/481 ,  G01S17/08 ,  G02F1/21

CPC classification number: G01S7/4814 ,  G01S17/08 ,  G02F1/21 ,  G01S17/931

Abstract: Provided is a spatial light modulator configured to modulate light, the spatial light modulator including a first reflective layer, a resonance layer on the first reflective layer, and a second reflective layer on the resonance layer, the second reflective layer including a plurality of grating structures space apart from each other, wherein the plurality of grating structures include silicon (Si) having an extinction coefficient k that is less than or equal to 1e-5 with respect to light in the predetermined wavelength band.

公开(公告)号：US20220308369A1

公开(公告)日：2022-09-29

申请号：US17842327

申请日：2022-06-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Duhyun LEE ,  Changgyun SHIN ,  Sunil KIM ,  Junghyun PARK ,  Byunggil JEONG

IPC: G02F1/017 ,  G02F1/01 ,  G02F1/19

Abstract: A light modulator for amplifying an intensity of incident light and modulating a phase of the incident light is provided. The light modulator includes: a first distributed Bragg reflector (DBR) layer having a first reflectivity and comprising at least two first refractive index layers that have different refractive indices from each other and are repeatedly alternately stacked; a second DBR layer having a second reflectivity and comprising at least two second refractive index layers that have different refractive indices from each other and are repeatedly alternately stacked; and an active layer disposed between the first DBR layer and the second DBR layer, and comprising a quantum well structure.

公开(公告)号：US20220137402A1

公开(公告)日：2022-05-05

申请号：US17575189

申请日：2022-01-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Junghyun PARK ,  Sunil KIM ,  Duhyun LEE ,  Byunggil JEONG

IPC: G02B26/12 ,  G01S7/481

Abstract: Provided are a beam scanning device and a system including the beam scanning device. The beam scanning device includes: a spatial light modulator configured to modulate a phase of a light for a corresponding pixel of a plurality of pixels; and a phase mask including a support plate arranged in an output direction of the light that is output from the spatial light modulator and a plurality of nanostructures arranged on the support plate differently for each of the plurality of pixels to control the phase of the light.

公开(公告)号：US20220011642A1

公开(公告)日：2022-01-13

申请号：US17365674

申请日：2021-07-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Duhyun LEE ,  Sunil KIM ,  Junghyun PARK ,  Changgyun SHIN ,  Byunggil JEONG

IPC: G02F1/29

Abstract: Provided is a light modulation element including a first contact layer, a second contact layer, an active layer provided between the first contact layer and the second contact layer, a first contact plug provided between the first contact layer and the active layer, and a second contact plug provided between the second contact layer and the active layer, wherein a width of at least one of the first contact plug and the second contact plug is less than a width of the active layer.

公开(公告)号：US20210149208A1

公开(公告)日：2021-05-20

申请号：US17090999

申请日：2020-11-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Andrey N. PUTILIN ,  Aleksander V. MOROZOV ,  Vladislav V. DRUZHIN ,  Sergey E. DUBYNIN ,  Kseniia I. LVOVA ,  Polina I. MALININA ,  Sergey S. KOPENKIN ,  Yurii P. BORODIN ,  Anastasiia S. PEREVOZNIKOVA ,  Bongsu SHIN ,  Sunil KIM

IPC: G02B27/01

Abstract: Provided is a device configured to enlarge an exit pupil area of a visual optical apparatus, the device including a diffraction grating configured to output a plurality of diffracted light beams of a plurality of diffraction orders by diffracting an incident light beam, and a waveguide provided on the diffraction grating and configured to form an exit pupil based on a first diffracted light beam among the plurality of diffracted light beams output from the diffraction grating and to form exit pupil orders based on a second diffracted light beam among the plurality of diffracted light beams output from the diffraction grating.

公开(公告)号：US20210055626A1

公开(公告)日：2021-02-25

申请号：US16790993

申请日：2020-02-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Byunggil JEONG ,  Sunil KIM ,  Junghyun PARK ,  Duhyun LEE

IPC: G02F1/31

Abstract: Provided a light modulating device including a variable mirror including a plurality of lattice structures, the plurality of lattice structures including a material having a refractive index that changes based on a temperature of the material, a distributed Bragg mirror spaced apart from the variable mirror and provided above the variable mirror, the distributed Bragg mirror including a first material layer and a second material layer that are alternately stacked, and a refractive index of the first material layer being different from a refractive index of the second material layer, and a heating portion configured to heat the plurality of lattice structures and provided below the variable mirror opposite to the distributed Bragg mirror.

公开(公告)号：US20200183148A1

公开(公告)日：2020-06-11

申请号：US16416972

申请日：2019-05-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Junghyun PARK ,  Sunil KIM ,  Duhyun LEE ,  Byunggil JEONG

IPC: G02B26/06 ,  G02B26/10 ,  G01S7/481

Abstract: Provided are a beam scanning device and a system including the beam scanning device. The beam scanning device includes: a spatial light modulator configured to modulate a phase of a light for a corresponding pixel of a plurality of pixels; and a phase mask including a support plate arranged in an output direction of the light that is output from the spatial light modulator and a plurality of nanostructures arranged on the support plate differently for each of the plurality of pixels to control the phase of the light.

公开(公告)号：US20200006923A1

公开(公告)日：2020-01-02

申请号：US16159173

申请日：2018-10-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sunil KIM ,  Junghyun PARK

IPC: H01S5/40 ,  H01S3/00 ,  H01S5/026 ,  G02F1/29

Abstract: A beam steering device is provided and includes: a first layer including a plurality of reflection regions; a second layer on the first layer and including a plurality of refractive-index-variable regions, each having a refractive index that is controlled by an applied voltage; an antenna layer on the second layer and including a plurality of nano-structures; and a driving circuit layer on a lower side of the first layer and comprising a plurality of circuit units, each respectively configured to control a voltage applied to one of the refractive-index-variable regions. The antenna layer is divided into a first region configured to control a travelling direction of incident light and a second region that is not configured to control the travelling direction of the incident light.

公开(公告)号：US20190064420A1

公开(公告)日：2019-02-28

申请号：US15894370

申请日：2018-02-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sunghoon LEE ,  Hoon SONG ,  Jungkwuen AN ,  Sunil KIM ,  Chilsung CHOI ,  Young KIM ,  Kanghee WON ,  Hongseok LEE

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

Abstract: A backlight unit including an input coupler, a holographic display apparatus including the backlight unit, and a method of manufacturing the input coupler are provided. The backlight unit includes the input coupler configured to cause light incident on a light incident surface of a light guide plate to travel into the light guide plate, the input coupler has a binary grating structure in which a plurality of barriers are arranged parallel to one another at a constant grating period, and the plurality of barriers are tilted from the light incident on the light incident surface.

公开(公告)号：US20190049739A1

公开(公告)日：2019-02-14

申请号：US15946282

申请日：2018-04-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

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

Abstract: Provided are a light guide plate, a backlight unit, and a holographic display apparatus including the backlight unit. The backlight unit includes a light source and a light guide plate including two or more layers configured to guide light from the light source, wherein the two or more layers are configured to control a ratio of light transmitted therethrough to light reflected thereby.