Patents by Inventor Hee-sun Yoon
Hee-sun Yoon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20210288472Abstract: A vertical cavity surface emitting laser (VCSEL) array, comprising: a first sub-array includes a plurality of VCSEL units arranged along a first axis, and wherein the first sub-array includes: a first VCSEL unit includes a first upper contact and a first bottom contact; and a second VCSEL unit includes a second upper contact and a second bottom contact; a first contact electrically connected to the first upper contact and the second bottom contact; and a second contact electrically connected to the second upper contact and the first bottom contact, wherein the first VCSEL unit is operated when a first voltage is applied to the first contact and a second voltage smaller than the first voltage is applied to the second contact, and wherein the second VCSEL unit is operated when the second voltage is applied to the first contact and the first voltage is applied to the second contact.Type: ApplicationFiled: May 28, 2021Publication date: September 16, 2021Inventors: Jun Hwan JANG, Hee Sun YOON, Chan M LIM, Hoon Il JEONG, Chang Mo JEONG, Jai Hi CHO
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Patent number: 11063408Abstract: A vertical cavity surface emitting laser (VCSEL) array, comprising: a first sub-array includes a plurality of VCSEL units arranged along a first axis, and wherein the first sub-array includes: a first VCSEL unit includes a first upper contact and a first bottom contact; and a second VCSEL unit includes a second upper contact and a second bottom contact; a first contact electrically connected to the first upper contact and the second bottom contact; and a second contact electrically connected to the second upper contact and the first bottom contact, wherein the first VCSEL unit is operated when a first voltage is applied to the first contact and a second voltage smaller than the first voltage is applied to the second contact, and wherein the second VCSEL unit is operated when the second voltage is applied to the first contact and the first voltage is applied to the second contact.Type: GrantFiled: August 28, 2020Date of Patent: July 13, 2021Assignee: SOS Lab Co., Ltd.Inventors: Jun Hwan Jang, Hee Sun Yoon, Chan M Lim, Hoon Il Jeong, Chang Mo Jeong, Jai Hi Cho
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Publication number: 20210066893Abstract: A vertical cavity surface emitting laser (VCSEL) array, comprising: a first sub-array includes a plurality of VCSEL units arranged along a first axis, and wherein the first sub-array includes: a first VCSEL unit includes a first upper contact and a first bottom contact; and a second VCSEL unit includes a second upper contact and a second bottom contact; a first contact electrically connected to the first upper contact and the second bottom contact; and a second contact electrically connected to the second upper contact and the first bottom contact, wherein the first VCSEL unit is operated when a first voltage is applied to the first contact and a second voltage smaller than the first voltage is applied to the second contact, and wherein the second VCSEL unit is operated when the second voltage is applied to the first contact and the first voltage is applied to the second contact.Type: ApplicationFiled: August 28, 2020Publication date: March 4, 2021Inventors: Jun Hwan JANG, Hee Sun YOON, Chan M LIM, Hoon Il JEONG, Chang Mo JEONG, Jai Hi CHO
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Publication number: 20200319316Abstract: A lidar device comprises: a laser emitting unit for including a plurality of VCSEL elements emitting a laser beam; a metasurface for including a plurality of beam steering cells arranged in a form of two-dimensional array by a row direction and a column direction, wherein the plurality of beam steering cells guide the laser beam by using nanopillars; wherein the nanopillars included in the plurality of beam steering cells form a subwavelength pattern, wherein the increase of an attribute related to at least one of the width, height, and number per unit length of the nanopillars is repetitive along the direction from the center of the metasurface to the position of the row corresponding to the plurality of beam steering cells.Type: ApplicationFiled: May 27, 2020Publication date: October 8, 2020Inventors: Jun Hwan JANG, Hee Sun YOON
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Patent number: 10705190Abstract: A lidar device comprises: a laser emitting unit for including a plurality of VCSEL elements emitting a laser beam; a metasurface for including a plurality of beam steering cells arranged in a form of two-dimensional array by a row direction and a column direction, wherein the plurality of beam steering cells guide the laser beam by using nanopillars; wherein the nanopillars included in the plurality of beam steering cells form a subwavelength pattern, wherein the increase of an attribute related to at least one of the width, height, and number per unit length of the nanopillars is repetitive along the direction from the center of the metasurface to the position of the row corresponding to the plurality of beam steering cells.Type: GrantFiled: March 4, 2019Date of Patent: July 7, 2020Assignee: SOS LAB CO., LTDInventors: Jun Hwan Jang, Hee Sun Yoon
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Patent number: 10578721Abstract: A lidar device comprises: a laser emitting unit for including a plurality of VCSEL elements emitting a laser beam; a metasurface for including a plurality of beam steering cells arranged in a form of two-dimensional array by a row direction and a column direction, wherein the plurality of beam steering cells guide the laser beam by using nanopillars; wherein the nanopillars included in the plurality of beam steering cells form a subwavelength pattern, wherein the increase of an attribute related to at least one of the width, height, and number per unit length of the nanopillars is repetitive along the direction from the center of the metasurface to the position of the row corresponding to the plurality of beam steering cells.Type: GrantFiled: February 22, 2019Date of Patent: March 3, 2020Assignee: SOS LAB CO., LTDInventors: Jun Hwan Jang, Hee Sun Yoon
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Patent number: 10557924Abstract: A lidar device comprises: a laser emitting unit for including a plurality of VCSEL elements emitting a laser beam; a metasurface for including a plurality of beam steering cells arranged in a form of two-dimensional array by a row direction and a column direction, wherein the plurality of beam steering cells guide the laser beam by using nanopillars; wherein the nanopillars included in the plurality of beam steering cells form a subwavelength pattern, wherein the increase of an attribute related to at least one of the width, height, and number per unit length of the nanopillars is repetitive along the direction from the center of the metasurface to the position of the row corresponding to the plurality of beam steering cells.Type: GrantFiled: March 22, 2019Date of Patent: February 11, 2020Assignee: SOS LAB CO., LTDInventors: Jun Hwan Jang, Hee Sun Yoon
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Publication number: 20200025893Abstract: A lidar device comprises: a laser emitting unit for including a plurality of VCSEL elements emitting a laser beam; a metasurface for including a plurality of beam steering cells arranged in a form of two-dimensional array by a row direction and a column direction, wherein the plurality of beam steering cells guide the laser beam by using nanopillars; wherein the nanopillars included in the plurality of beam steering cells form a subwavelength pattern, wherein the increase of an attribute related to at least one of the width, height, and number per unit length of the nanopillars is repetitive along the direction from the center of the metasurface to the position of the row corresponding to the plurality of beam steering cells.Type: ApplicationFiled: March 4, 2019Publication date: January 23, 2020Inventors: Jun Hwan JANG, Hee Sun YOON
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Publication number: 20200025892Abstract: A lidar device comprises: a laser emitting unit for including a plurality of VCSEL elements emitting a laser beam; a metasurface for including a plurality of beam steering cells arranged in a form of two-dimensional array by a row direction and a column direction, wherein the plurality of beam steering cells guide the laser beam by using nanopillars; wherein the nanopillars included in the plurality of beam steering cells form a subwavelength pattern, wherein the increase of an attribute related to at least one of the width, height, and number per unit length of the nanopillars is repetitive along the direction from the center of the metasurface to the position of the row corresponding to the plurality of beam steering cells.Type: ApplicationFiled: February 22, 2019Publication date: January 23, 2020Inventors: Jun Hwan JANG, Hee Sun YOON
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Publication number: 20200025888Abstract: A lidar device comprises: a laser emitting unit for including a plurality of VCSEL elements emitting a laser beam; a metasurface for including a plurality of beam steering cells arranged in a form of two-dimensional array by a row direction and a column direction, wherein the plurality of beam steering cells guide the laser beam by using nanopillars; wherein the nanopillars included in the plurality of beam steering cells form a subwavelength pattern, wherein the increase of an attribute related to at least one of the width, height, and number per unit length of the nanopillars is repetitive along the direction from the center of the metasurface to the position of the row corresponding to the plurality of beam steering cells.Type: ApplicationFiled: March 22, 2019Publication date: January 23, 2020Inventors: Jun Hwan JANG, Hee Sun YOON
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Patent number: 10097741Abstract: Provided are a depth camera and methods of measuring a depth image by using the depth camera. The depth camera is a time-of-flight (TOF) depth camera including: an illumination device that illuminates a patterned light to an object; a filter unit that reduces noise light included in light reflected by the object; and an image sensor that provides a depth image of the object by receiving light that enters through the filter unit. The illumination device includes: a light source; and a patterned light generator that changes the light emitted from the light source into the patterned light. The filter unit includes a band pass filter and an optical modulator. The patterned light generator may be a diffractive optical element or a refractive optical element.Type: GrantFiled: August 30, 2017Date of Patent: October 9, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jang-woo You, Yong-hwa Park, Hee-sun Yoon
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Patent number: 9894347Abstract: Provided is a 3-dimensional (3D) image acquisition apparatus and a method of driving the same. The 3D image acquisition apparatus includes a light source, an optical shutter, an image sensor, an image signal processor, and a controller. The light source is configured to project illumination light on an object. The optical shutter is configured to modulate the illumination light reflected from the object with a predetermined gain waveform. The image sensor is configured to generate a depth image by detecting the illumination light modulated by the optical shutter. The image signal processor is configured to calculate a distance from the 3D image acquisition apparatus to the object using the depth image generated by the image sensor. The controller is configured to control an operation of the light source and an operation of the optical shutter.Type: GrantFiled: April 14, 2014Date of Patent: February 13, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hee-sun Yoon, Jang-woo You, Yong-hwa Park, Yong-chul Cho, Min-chul Yu
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Publication number: 20170366713Abstract: Provided are a depth camera and methods of measuring a depth image by using the depth camera. The depth camera is a time-of-flight (TOF) depth camera including: an illumination device that illuminates a patterned light to an object; a filter unit that reduces noise light included in light reflected by the object; and an image sensor that provides a depth image of the object by receiving light that enters through the filter unit. The illumination device includes: a light source; and a patterned light generator that changes the light emitted from the light source into the patterned light. The filter unit includes a band pass filter and an optical modulator. The patterned light generator may be a diffractive optical element or a refractive optical element.Type: ApplicationFiled: August 30, 2017Publication date: December 21, 2017Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jang-woo YOU, Yong-hwa PARK, Hee-sun YOON
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Patent number: 9781318Abstract: Provided are a depth camera and methods of measuring a depth image by using the depth camera. The depth camera is a time-of-flight (TOF) depth camera including: an illumination device that illuminates a patterned light to an object; a filter unit that reduces noise light included in light reflected by the object; and an image sensor that provides a depth image of the object by receiving light that enters through the filter unit. The illumination device includes: a light source; and a patterned light generator that changes the light emitted from the light source into the patterned light. The filter unit includes a band pass filter and an optical modulator. The patterned light generator may be a diffractive optical element or a refractive optical element.Type: GrantFiled: June 24, 2014Date of Patent: October 3, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jang-woo You, Yong-hwa Park, Hee-sun Yoon
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Patent number: 9749613Abstract: Provided are a three-dimensional (3D) image acquisition apparatus, and a method of generating a depth image in the 3D image acquisition apparatus. The method may include sequentially projecting a light transmission signal, which is generated from a light source, to a subject, modulating reflected light, which is reflected by the subject, using a light modulation signal, calculating a phase delay using a combination of a first plurality of images of two groups, from among a second plurality of images of all groups obtained by capturing the modulated reflected light, and generating a depth image based on the phase delay.Type: GrantFiled: April 8, 2014Date of Patent: August 29, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-hwa Park, Sun-kwon Kim, Hee-sun Yoon
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Publication number: 20160318208Abstract: A method for forming concrete poles using centrifugal force comprises steps of positioning first and second inner moulds into first and second outer moulds, wherein a decoration and function shaping part is detachably attached on the inner circumference of each of the first and second inner moulds, assembling the first and second outer moulds with the first and second inner moulds, wherein the assembled first and second outer moulds and first and second inner moulds constitute a concrete pole mould, pouring concrete into inside of the concrete pole mould, rotating the concrete pole mould at high speed, and disassembling the first and second inner moulds from the first and second outer moulds. The mould device for performing the method and the concreted pole made by the method are also provided.Type: ApplicationFiled: January 25, 2016Publication date: November 3, 2016Inventors: HEE SUN YOON, MYUNG SECK LIM
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Patent number: 9451240Abstract: A 3-dimensional (3D) image acquisition apparatus capable of simultaneously obtaining a color image and a depth image in a single shooting operation is provided. The apparatus includes a light source for radiating illumination light having a predetermined wavelength onto an object; a lens unit having at least four object lenses; an image sensor including at least four sensing regions for individually receiving light focused by the object lenses and for generating images; and at least three optical shutters individually facing at least three of the at least four object lenses and for modulating incident light with predetermined gain waveforms.Type: GrantFiled: August 7, 2013Date of Patent: September 20, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jang-woo You, Yong-hwa Park, Hee-sun Yoon, Yong-chul Cho
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Patent number: 9418425Abstract: A 3-dimensional (3D) image acquisition apparatus and a method of calculating depth information in the 3D image acquisition apparatus, the 3D image acquisition apparatus including: an optical modulator for modulating light reflected from a subject by sequentially projected N (N is 3 or a larger natural number) light beams; an image sensor for generating N sub-images by capturing the light modulated by the optical modulator; and a signal processor for calculating depth information regarding a distance to the subject by using the N sub-images.Type: GrantFiled: August 24, 2012Date of Patent: August 16, 2016Assignee: SAMSUNG ELECTRONIC CO., LTD.Inventors: Yong-hwa Park, Jang-woo You, Hee-sun Yoon
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Patent number: 9398200Abstract: Provided are a wavelength separation device and a 3-dimensional (3D) image acquisition apparatus including the same. The wavelength separation device includes a first prism having an inclined surface and a second prism bonded to a first region of the inclined surface of the first prism. A wavelength separation coating may be disposed at a junction between the first portion of the inclined surface of the first prism and the second prism, and a second portion of the inclined surface of the first prism, different from the first portion, is a total reflection surface that totally internally reflects light.Type: GrantFiled: July 22, 2014Date of Patent: July 19, 2016Assignee: Samsung Electronics Co., Ltd.Inventors: Jang-woo You, Yong-hwa Park, Hee-sun Yoon
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Patent number: 9182614Abstract: A large-area transmissive type optical image modulator, a method of manufacturing the same, and an optical apparatus including the transmissive type optical image modulator are provided. The large-area transmissive type optical image modulator includes: a base substrate; a first expitaxial layer formed on the base substrate; a second expitaxial layer formed on the first expitaxial layer; a first electrode formed on the first expitaxial layer and spaced apart from the second expitaxial layer; a second electrode formed on the second expitaxial layer; and a transparent substrate covering the second expitaxial layer and the second electrode, wherein the base substrate includes a through hole corresponding to a light emitting area, and the first expitaxial layer may include an n-type or p-type doping material.Type: GrantFiled: December 21, 2012Date of Patent: November 10, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-chul Cho, Sang-hun Lee, Yong-hwa Park, Chang-young Park, Jong-oh Kwon, Jang-woo You, Hee-sun Yoon