Patents by Inventor Jang-woo YOU
Jang-woo YOU 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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Patent number: 10869018Abstract: An optical imaging system for a three-dimensional image acquisition apparatus includes an object lens which focuses light, a first image sensor which senses light in a visible light band of the light focused by the object lens, and a second image sensor which senses light in an infrared ray band of light transmitted through the first image sensor. A three-dimensional image acquisition apparatus includes the optical imaging system for a three-dimensional image acquisition apparatus.Type: GrantFiled: January 25, 2016Date of Patent: December 15, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyu Sik Kim, Yong Hwa Park, Ryuichi Satoh, Jang Woo You
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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: 9998730Abstract: An imaging optical system includes an objective lens configured to focus light having a first wavelength band and light having a second wavelength band, an optical shutter module configured to reflect the light having the first wavelength band, which is focused by the objective lens, without modulating the light having the first wavelength band and to modulate the light having the second wavelength band, which is focused by the objective lens, and reflect the modulated light having the second wavelength band, and an image sensor configured to respectively sense the light having the first wavelength band and the modulated light having the second wavelength band, which are reflected by the optical shutter module, and to output a first image signal with respect to the light having the first wavelength band and a second image signal with respect to the modulated light having the second wavelength band.Type: GrantFiled: May 8, 2017Date of Patent: June 12, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-hwa Park, Jang-woo You
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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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Patent number: 9874637Abstract: An illumination optical system of a 3-dimensional (3D) image acquisition apparatus and a 3D image acquisition apparatus including the illumination optical system. The illumination optical system of a 3D image acquisition apparatus includes a beam shaping element which outputs light having a predetermined cross-sectional shape which is proportional to a field of view of the 3D image acquisition apparatus. The beam shaping element may adjust a shape of illumination light according to its cross-sectional shape. The beam shaping element may uniformly homogenize the illumination light without causing light scattering or absorption.Type: GrantFiled: September 24, 2011Date of Patent: January 23, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-hwa Park, Alexander Shirankov, Jang-woo You, Oleg Vladimirovich Rozhkov
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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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Publication number: 20170244953Abstract: An imaging optical system includes an objective lens configured to focus light having a first wavelength band and light having a second wavelength band, an optical shutter module configured to reflect the light having the first wavelength band, which is focused by the objective lens, without modulating the light having the first wavelength band and to modulate the light having the second wavelength band, which is focused by the objective lens, and reflect the modulated light having the second wavelength band, and an image sensor configured to respectively sense the light having the first wavelength band and the modulated light having the second wavelength band, which are reflected by the optical shutter module, and to output a first image signal with respect to the light having the first wavelength band and a second image signal with respect to the modulated light having the second wavelength band.Type: ApplicationFiled: May 8, 2017Publication date: August 24, 2017Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-hwa PARK, Jang-woo YOU
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Patent number: 9667944Abstract: An imaging optical system includes an objective lens configured to focus light having a first wavelength band and light having a second wavelength band, an optical shutter module configured to reflect the light having the first wavelength band, which is focused by the objective lens, without modulating the light having the first wavelength band and to modulate the light having the second wavelength band, which is focused by the objective lens, and reflect the modulated light having the second wavelength band, and an image sensor configured to respectively sense the light having the first wavelength band and the modulated light having the second wavelength band, which are reflected by the optical shutter module, and to output a first image signal with respect to the light having the first wavelength band and a second image signal with respect to the modulated light having the second wavelength band.Type: GrantFiled: September 17, 2013Date of Patent: May 30, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-hwa Park, Jang-woo You
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Patent number: 9638941Abstract: A photonic crystal type light modulator is provided. The photonic crystal type light modulator includes: a substrate; a first electrode disposed on the substrate; an active layer disposed on the first electrode, where an optical characteristic of the active layer changes according to application of an electric field; a second electrode disposed on the active layer; and a photonic crystal layer disposed on the second electrode and comprising a 2D grating.Type: GrantFiled: October 28, 2011Date of Patent: May 2, 2017Assignees: SAMSUNG ELECTRONICS CO., LTD., INHA Industry Partnership InstituteInventors: Jang-woo You, Yong-hwa Park, Yong-ho Lee, Chang-kwon Hwangbo, Jin-joo Kim
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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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Publication number: 20160227194Abstract: An optical imaging system for a three-dimensional image acquisition apparatus includes an object lens which focuses light, a first image sensor which senses light in a visible light band of the light focused by the object lens, and a second image sensor which senses light in an infrared ray band of light transmitted through the first image sensor. A three-dimensional image acquisition apparatus includes the optical imaging system for a three-dimensional image acquisition apparatus.Type: ApplicationFiled: January 25, 2016Publication date: August 4, 2016Inventors: Kyu Sik KIM, Yong Hwa PARK, Ryuichi SATOH, Jang Woo YOU
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Patent number: 9402067Abstract: An imaging optical system and a three-dimensional (3D) image acquisition apparatus which includes the imaging optical system are provided. The imaging optical system includes an object lens configured to transmit light; first and second image sensors having different sizes from each other; a beamsplitter on which the light transmitted by the object lens is incident, the beamsplitter being configured to split the light incident thereon into light of a first wavelength band and light of a second wavelength band, and to direct the light of the first wavelength band to the first image sensor and the light of the second wavelength band to the second image sensor; and at least one optical element, disposed between the beamsplitter and the second image sensor, configured to reduce an image that is incident on the second image sensor, the optical element including at least one of a Fresnel lens and a diffractive optical element.Type: GrantFiled: October 22, 2013Date of Patent: July 26, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-hwa Park, Alexander Gorelov, Jang-woo You, Alexander Shirankov, Seung-wan Lee
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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: 9188662Abstract: A beam splitter and a 3D image acquisition apparatus including the beam splitter are provided. The beam splitter includes a light incident surface on which light having a first wavelength and light having a second wavelength are incident; a beam splitting surface which is inclined to the light incident surface and reflects the light having the first wavelength and transmits the light having the second wavelength; a first light exit surface through which the light having the first wavelength reflected from the beam splitting surface exits; a first reflective surface which reflects the light having the second wavelength transmitted by the beam splitting surface; a second reflective surface which reflects the light having the second wavelength reflected from the first reflective surface; and a second light exit surface through which the light having the second wavelength reflected from the second reflective surface exits.Type: GrantFiled: June 16, 2011Date of Patent: November 17, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jang-woo You, Yong-hwa Park, Yong-chul Cho
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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
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Patent number: 9170471Abstract: An optical system including integrated illumination and imaging optical systems, and a 3-dimensional (3D) image acquisition apparatus including the optical system. In the optical system of the 3D image acquisition apparatus, the illumination optical system and the imaging optical system are integrated to have a coaxial optical path. Accordingly, there is no parallax between the illumination optical system and the imaging optical system, so that depth information about an object acquired using illumination light may reflect actual distances between the object and the 3D image acquisition apparatus. Consequently, the depth information about the object may be more precise. The zero parallax between the illumination optical system and the imaging optical system may improve utilization efficiency of the illumination light. As a result, a greater amount of light may be incident on the 3D image acquisition apparatus, which ensures to acquire further precise depth information about the object.Type: GrantFiled: June 9, 2011Date of Patent: October 27, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-hwa Park, Jang-woo You, Alexander Shirankov, Stanislav Shtykov, Viktor Pavlov
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Patent number: 9123164Abstract: A method for extracting depth information, which may include extracting depth information relating to an object by using an actual nonlinear waveform instead of a mathematically ideal waveform and simultaneously may include effectively removing errors due to random noises that may be caused in a light source, an light modulator, an imaging device, or the like, is provided. The method may include performing simple multiplex and addition on captured images and performing a search of a look-up table. Thus, correct distance information may be extracted without being affected by a type of waveform being used, and an amount of memory which is used and calculated for removing random noise may be reduced.Type: GrantFiled: February 5, 2013Date of Patent: September 1, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-hwa Park, Jang-woo You, Hee-sun Yoon
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Publication number: 20150163474Abstract: 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: June 24, 2014Publication date: June 11, 2015Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jang-woo YOU, Yong-hwa PARK, Hee-sun YOON