公开(公告)号：US11476385B2

公开(公告)日：2022-10-18

申请号：US16884674

申请日：2020-05-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Byunghoon Na ,  Changyoung Park ,  Yonghwa Park

IPC: H01L33/04 ,  H01L33/06 ,  G02F1/017 ,  H01L33/30 ,  H01L33/60

Abstract: Provided is an optical device including an active layer, which includes two outer barriers and a coupled quantum well between the two outer barriers. The coupled quantum well includes a first quantum well layer, a second quantum well layer, a third quantum well layer, a first coupling barrier between the first quantum well layer and the second quantum well layer, and a second coupling barrier between the second quantum well layer and the third quantum well layer. The second quantum well layer is between the first quantum well layer and the third quantum well layer. An energy band gap of the second quantum well layer is less than an energy band gap of the first quantum well layer, and an energy band gap of the third quantum well layer is equal to or less than the energy band gap of the second quantum well layer.

公开(公告)号：US10746878B2

公开(公告)日：2020-08-18

申请号：US15076947

申请日：2016-03-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Heesun Yoon ,  Jangwoo You ,  Yonghwa Park

IPC: G01C3/08 ,  G01S17/89 ,  G01S17/32

Abstract: A method of measuring a distance by using a 3-dimensional (3D) depth sensor is provided. The method may include: measuring m number of frames using light modulated at a first frequency to determine a first tentative distance from a viewpoint to an object at the first frequency, m being a positive integer; measuring n number of frames using light modulated at a second frequency to determine a second tentative distance from the viewpoint to the object at the second frequency, n being a positive integer, a sum of m and n being four; and determining a resulting distance to the object based on the first distance and the second distance.

公开(公告)号：US10516875B2

公开(公告)日：2019-12-24

申请号：US15410127

申请日：2017-01-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ji Zhao ,  Wen Zhou ,  Haitao Wang ,  Yonghwa Park

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N13/254 ,  G06T5/00 ,  G06T5/50 ,  G06T7/521 ,  G06T7/55 ,  H04N13/271 ,  H04N13/128 ,  G01S17/36 ,  G01S7/497 ,  H04N13/00

Abstract: A method and an apparatus for obtaining a depth image by using a time-of-flight sensor may generate a depth image based on a plurality of images in which a motion blur area caused by a movement of an object was corrected. In this case, since the motion blur area is corrected after an initial phase difference of emitted light is compensated, an accuracy of the depth image may be enhanced.

公开(公告)号：US10430956B2

公开(公告)日：2019-10-01

申请号：US15713149

申请日：2017-09-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jisan Lee ,  Yonghwa Park

IPC: G06T5/50 ,  G01S7/486 ,  G06T7/50 ,  G01S17/36 ,  G01S17/89 ,  G01S7/491 ,  G01S7/493 ,  G06T5/00 ,  G01S13/00 ,  G01S15/00 ,  G01S17/00

Abstract: An image processing method for reducing distortion of a depth image may include: obtaining a plurality of original images based on light beams which are emitted to and reflected from a subject; determining original depth values of original depth images obtained from the plurality of original images, based on phase delays of the light beams, the reflected light beams comprising multi-reflective light beams that distort the original depth values; determining imaginary intensities of the multi-reflective light beams with respective to each phase of the multi-reflective light beams, based on regions having intensities greater than a predetermined intensity in the original depth images; correcting the original depth values of the original depth images, based on the imaginary intensities of the multi-reflective light beams; and generating corrected depth images based on the corrected original depth values.

公开(公告)号：US10362294B2

公开(公告)日：2019-07-23

申请号：US15096783

申请日：2016-04-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yongchul Cho ,  Myungjae Jeon ,  Yonghwa Park

IPC: G01J3/00 ,  H04N13/254 ,  G01S17/36 ,  G01S17/89 ,  G01S7/481 ,  G01S7/497 ,  G02F1/015 ,  G02F1/03

Abstract: Provided are a three-dimensional (3D) camera including a wavelength-variable light source for directly measuring transmittance and a method of measuring the transmittance. The 3D camera includes, as well as a light source, a transmission type shutter, and an image sensor, and a wavelength-variable light source capable of irradiating a light with a variable wavelength without being thermally affected by the light source, the image sensor, and the transmission type shutter. The wavelength-variable light source may directly measure a change in transmittance by irradiating light toward the transmission type shutter while the 3D camera operates.

公开(公告)号：US10122999B2

公开(公告)日：2018-11-06

申请号：US15157633

申请日：2016-05-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jinmyoung Kim ,  Sunguk Bin ,  Namseop Kwon ,  Yonghwa Park ,  Myungjae Jeon

IPC: H04N13/00 ,  H04N5/33 ,  H04N13/296 ,  H04N13/254 ,  G01S17/89 ,  G01S7/491

Abstract: A camera includes: a light source configured to emit an infrared (IR) signal; a receiver configured to receive a reflected IR signal, the reflected signal corresponding to the IR signal being reflected from an object; and a processor configured to generate an IR image based on the reflected IR signal, determine whether the IR image is saturated based on comparison between at least one pixel value of the IR image and a reference pixel value, and control an intensity of the IR signal emitted by the light source based on a result of the determination.

公开(公告)号：US09857877B2

公开(公告)日：2018-01-02

申请号：US14624715

申请日：2015-02-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Heesun Yoon ,  Jangwoo You ,  Myungjae Jeon ,  Yonghwa Park

IPC: G06F3/01 ,  G06F1/16 ,  G06F3/03 ,  G06F3/042 ,  G06F3/0488

CPC classification number: G06F3/017 ,  G06F1/163 ,  G06F3/0304 ,  G06F3/0425 ,  G06F3/04883

Abstract: Provided is an apparatus and method of recognizing a movement of a subject. The apparatus includes a light source configured to emit light to the subject and an image sensor configured to receive light reflected from the subject. The apparatus includes a processor configured to detect a pixel that is receiving the reflected light, the pixel being included in a pixel array of the image sensor. The processor is configured to track the movement of the subject based on a change in a position of the detected pixel.

公开(公告)号：US09769456B2

公开(公告)日：2017-09-19

申请号：US14699068

申请日：2015-04-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jangwoo You ,  Byunghoon Na ,  Yonghwa Park ,  Changyoung Park ,  Heesun Yoon ,  Sanghun Lee ,  Myungjae Jeon

IPC: H04N13/02 ,  G01S17/06 ,  G01S17/02 ,  G01S17/89 ,  G01S7/481

CPC classification number: H04N13/204 ,  G01S7/4816 ,  G01S17/023 ,  G01S17/06 ,  G01S17/89 ,  H04N13/254 ,  H04N13/286 ,  H04N13/289

Abstract: A depth image measuring camera includes an illumination device configured to irradiate an object with light, and a light-modulating optical system configured to receive the light reflected from the object. The depth image measuring camera includes an image sensor configured to generate an image of the object by receiving light incident on the image sensor that passes through the light-modulating optical system. The light-modulating optical system includes a plurality of lenses having a same optical axis, and an optical modulator configured to operate in two modes for measuring a depth of the object.

公开(公告)号：US11327488B2

公开(公告)日：2022-05-10

申请号：US15644173

申请日：2017-07-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jangwoo You ,  Namseop Kwon ,  Yonghwa Park ,  Jisan Lee ,  Myungjae Jeon

IPC: G05D1/00 ,  G01S17/89 ,  G01S17/04 ,  G01S17/931 ,  G01S7/481 ,  G05D1/02

Abstract: Provided are non-uniform light-emitting lidar (light detection and ranging) apparatuses and autonomous robots including the same. A lidar apparatus may include a light source configured to emit light, an optical unit arranged on an optical path of light emitted from the light source and configured to change an optical profile of the light to be non-uniform, and a 3D sensor configured to sense location of an object by receiving reflection light from the object.

公开(公告)号：US20200287081A1

公开(公告)日：2020-09-10

申请号：US16884674

申请日：2020-05-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Byunghoon NA ,  Changyoung Park ,  Yonghwa Park

IPC: H01L33/06 ,  G02F1/017 ,  H01L33/04 ,  H01L33/30 ,  H01L33/60

Abstract: Provided is an optical device including an active layer, which includes two outer barriers and a coupled quantum well between the two outer barriers. The coupled quantum well includes a first quantum well layer, a second quantum well layer, a third quantum well layer, a first coupling barrier between the first quantum well layer and the second quantum well layer, and a second coupling barrier between the second quantum well layer and the third quantum well layer. The second quantum well layer is between the first quantum well layer and the third quantum well layer. An energy band gap of the second quantum well layer is less than an energy band gap of the first quantum well layer, and an energy band gap of the third quantum well layer is equal to or less than the energy band gap of the second quantum well layer.