公开(公告)号：US10585231B2

公开(公告)日：2020-03-10

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

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：US10429573B2

公开(公告)日：2019-10-01

申请号：US15404553

申请日：2017-01-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Joonyong Park ,  Bongsu Shin ,  Dongouk Kim ,  Hyunjoon Kim ,  Jihyun Bae ,  Dongsik Shim ,  Sunghoon Lee ,  Jaeseung Chung ,  Seokho Song

IPC: F21V8/00

Abstract: A double-sided glassless three-dimensional (3D) display apparatus including a backlight unit may include an light source unit configured to emit light to the front and the rear thereof by diffracting incident light, and first and second display devices configured to use the light emitted by the light source unit as light for a 3D image formation and to form the 3D image on both sides of the light source unit. The light source unit may include a light source portion configured to emit three lights that have three different respective wavelengths and a light guide panel configured to transmit the lights emitted by the light source portion to the first and second display devices.

公开(公告)号：US10393945B2

公开(公告)日：2019-08-27

申请号：US15860202

申请日：2018-01-02

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dongouk Kim ,  Joonyong Park ,  Jaeseung Chung ,  Alexander V. Morozov ,  Bongsu Shin ,  Jihyun Bae ,  Seokho Song ,  Dongsik Shim ,  Sunghoon Lee

IPC: F21V7/04 ,  F21V8/00

Abstract: Provided are a directional backlight unit and an image display apparatus including the same. The directional backlight unit includes at least one light source, a light guide plate arranged at a side of the at least one light source and configured to guide light emitted from the at least one light source by total reflection, a plurality of diffraction gratings arranged in a pattern at a surface of the light guide plate and configured to diffract the light and to emit the light diffracted by the plurality of diffraction gratings at a predetermined angle from a front surface; and a mirror arranged at a rear surface of the light guide plate and configured to reflect the light diffracted by the plurality of diffraction gratings toward the light guide plate, the rear surface of the light guide plate being opposite to the front surface of the light guide plate.

公开(公告)号：US20170249522A1

公开(公告)日：2017-08-31

申请号：US15444959

申请日：2017-02-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sanghun Lee ,  Seokho Song ,  Dongkyun Kim ,  Sunghyun Nam ,  Younghun Sung ,  Seokyoon Jung ,  Yangho Cho ,  Byounglyong Choi

IPC: G06K9/22 ,  H04N5/232 ,  H04N5/225 ,  G06F3/0354 ,  G06F3/038

CPC classification number: G06K9/222 ,  G06F3/03545 ,  G06F3/038 ,  G06F3/0383 ,  H04N5/2257 ,  H04N5/23296

Abstract: The electric pen device includes an optical system including a lens and an image sensor configured to convert an image signal of light that has passed through the optical system to an electrical signal. The electric pen device includes a control board configured to interact with an electronic device and a communication module configured to communicate by wire or wirelessly with the electronic device, so that an image or a picture taken by a camera is confirmed and an optical zoom is controlled from the external electronic device.