Patents by Inventor Seokil Moon

Seokil Moon 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).

  • Publication number: 20230252780
    Abstract: An image processing method and apparatus include: obtaining a plurality of input optical images and a plurality of output optical images for a near-eye display apparatus; training a neural network for modeling the waveguide optical system by using a training set including the obtained input and output optical images; and obtaining a uniformity correction image to be input to the trained neural network such that the trained neural network then outputs a target uniformity image having certain brightness uniformity.
    Type: Application
    Filed: August 19, 2022
    Publication date: August 10, 2023
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seokil Moon, Changkun Lee, Geeyoung Sung
  • Patent number: 11682325
    Abstract: Provided is a display apparatus including an image generator configured to time-sequentially generate a plurality of images by modulating light, and an optical system including a freeform surface that is configured to time-sequentially form a plurality of virtual images respectively corresponding to the plurality of images at different depths from a user's eye, wherein each error value among error values between the plurality of images and the plurality of virtual images respectively corresponding to the plurality of images on the freeform surface is less than or equal to a profile value of the freeform surface.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: June 20, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seokil Moon, Changkun Lee, Geeyoung Sung
  • Publication number: 20230168509
    Abstract: A display apparatus includes a waveguide; an input coupler on the waveguide and configured to introduce light containing an image into the waveguide; and an output coupler on the waveguide and configured to output light traveling in the waveguide to the outside of the waveguide, wherein the output coupler includes a plurality of first diffraction grating elements arranged apart from each other and configured to diffract a first light portion in a first wavelength band among the light traveling in the waveguide.
    Type: Application
    Filed: May 16, 2022
    Publication date: June 1, 2023
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Changkun LEE, Seokil MOON
  • Publication number: 20230161160
    Abstract: Provided are a waveguide optical device and a near-eye display apparatus including the same. The waveguide optical device includes a waveguide that propagates light, an input coupler that inputs the light into the waveguide, and an output coupler that outputs the light propagating in the waveguide to the outside, wherein the output coupler includes a plurality of grating regions, which are arranged to be spaced apart from each other.
    Type: Application
    Filed: May 23, 2022
    Publication date: May 25, 2023
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seokil Moon, Changkun Lee, Geeyoung Sung
  • Publication number: 20220342366
    Abstract: A holographic display apparatus including a freeform curved surface and an operating method of the holographic display apparatus are provided. The holographic display apparatus includes: an image generator configured to generate a hologram image by modulating light; an optical system including a freeform curved surface for forming the hologram image generated by the image generator in a predetermined depth; and a processor configured to generate a computer-generated hologram (CGH) based on three-dimensional image information by using a phase map including information about an optical aberration with respect to the freeform curved surface and to control the image generator to modulate the light based on the CGH.
    Type: Application
    Filed: November 4, 2021
    Publication date: October 27, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seokil MOON, Changkun LEE, Geeyoung SUNG
  • Publication number: 20220343815
    Abstract: Provided is a display apparatus including an image generator configured to time-sequentially generate a plurality of images by modulating light, and an optical system including a freeform surface that is configured to time-sequentially form a plurality of virtual images respectively corresponding to the plurality of images at different depths from a user's eye, wherein each error value among error values between the plurality of images and the plurality of virtual images respectively corresponding to the plurality of images on the freeform surface is less than or equal to a profile value of the freeform surface.
    Type: Application
    Filed: October 27, 2021
    Publication date: October 27, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seokil MOON, Changkun LEE, Geeyoung SUNG
  • Publication number: 20220317626
    Abstract: Provided is a method of generating a hologram, the method including generating a kernel and a neural network configured to model an aberration of a holographic display device, obtaining second image data output from the neural network to which first image data obtained by propagating a first hologram based on the kernel is input, updating the kernel and the neural network based on comparing the second image data and predetermined image data, and generating a second hologram based on the kernel and the neural network.
    Type: Application
    Filed: March 8, 2022
    Publication date: October 6, 2022
    Applicants: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Seokil Moon, Dongheon Yoo, Seungwoo Nam, Byoungho Lee, Changkun Lee, Hongseok Lee
  • Publication number: 20220299776
    Abstract: Provided is a display apparatus including a combiner having asymmetric magnification. The display apparatus may include: an image forming device configured to form a virtual image; and a combiner configured to mix the virtual image with light containing an outside landscape and provide a viewer with the virtual image and the light that are mixed with each other, wherein the combiner may include a curved surface that varies a size of the virtual image with a first magnification in a first direction and a second magnification in a second direction perpendicular to the first direction, the second magnification being less than the first magnification.
    Type: Application
    Filed: March 22, 2022
    Publication date: September 22, 2022
    Applicants: SAMSUNG ELECTRONICS CO., LTD., MYONGJI UNIVERSITY INDUSTRY AND ACADEMIA COOPERATION
    Inventors: Changkun Lee, Woojun Han, Jaisoon Kim, Seokil Moon, Geeyoung Sung, Seunga Lim
  • Publication number: 20220299939
    Abstract: Provided are holographic display systems and methods for generating a hologram by compensating for aberrations of a holographic display device. The holographic display system may include a holographic display device and a hologram generating device. The hologram generating device may generate a hologram by propagating hologram segments, using kernels generated by modeling each aberration corresponding to each of hologram plane segments to compensate for aberrations.
    Type: Application
    Filed: November 29, 2021
    Publication date: September 22, 2022
    Applicants: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Seokil Moon, Dongheon Yoo, Seungwoo Nam, Byoungho Lee, Changkun Lee, Hongseok Lee
  • Publication number: 20220187599
    Abstract: A waveguide type display apparatus is provided. This waveguide type display apparatus includes a waveguide through which an image proceeds and a leakage image reducer configured to reduce emission of a leakage image leaked from the waveguide without total internal reflection in the waveguide, from among images, to the outside by a volume grating.
    Type: Application
    Filed: July 8, 2021
    Publication date: June 16, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Changkun LEE, Seokil Moon, Geeyoung Sung, Bongsu Shin, Hongseok Lee
  • Publication number: 20220179214
    Abstract: A foveated display apparatus includes a first display panel configured to form a two-dimensional (2D) image; a second display panel configured to form a hologram image comprising a three-dimensional (3D) image; a light guide plate configured to transmit the 2D image at a first angle of view to an eye of a user; and a holographic optical element configured to transmit the hologram image at a second angle of view to the eye of the user, the second angle of view being smaller than the first angle of view.
    Type: Application
    Filed: November 15, 2021
    Publication date: June 9, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Changkun Lee, Seokil Moon, Geeyoung Sung, Hongseok Lee, Jong-Young Hong
  • Publication number: 20220171186
    Abstract: A display device includes a light source array including a plurality of light sources where at least one of the plurality of light sources is selectively driven, a spatial light modulator for modulating light from the light source array to form image light, a focusing optical system for focusing the image light formed by the spatial light modulator at a position in a predetermined eye box, a micro mirror array arranged in an optical path formed in the focusing optical system and including a plurality of mirror cells. The plurality of mirror cells are controlled to be in an ON state in that light is reflected in a direction toward an inside of the eye box or to be in an OFF state in that light is reflected in a direction toward an outside of the eye box.
    Type: Application
    Filed: May 21, 2021
    Publication date: June 2, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Wontaek SEO, Hongseok LEE, Sunil KIM, Seokil MOON, Bongsu SHIN, Daeho YANG, Changkun LEE
  • Publication number: 20220171189
    Abstract: A holographic lens and a display apparatus using the same as a combiner, the holographic lens including a phase profile obtained through an optimization process for each position to form an imaging optical system for forming a virtual image of lights emitted from a plurality of areas.
    Type: Application
    Filed: June 4, 2021
    Publication date: June 2, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seokil MOON, Changkun Lee, Geeyoung Sung, Hongseok Lee
  • Publication number: 20220171209
    Abstract: A display device including a meta surface is provided. The display device includes an image provider comprising a spatial light modulator configured to modulate light according to image information, wherein the image provider is configured to provide the light comprising the image information; an optical element configured to focus the light from the image provider; and a meta surface deflector positioned between the image provider and the optical element to deflect the light, and change a deflection direction of the light according to a polarization of the light so that a first position of the light of a first polarization focused by the optical element is different than a second position of the light of a second polarization orthogonal to the first polarization focused by the optical element.
    Type: Application
    Filed: April 27, 2021
    Publication date: June 2, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seokil MOON, Sangeun MUN, Sunil KIM, Wontaek SEO, Geeyoung SUNG, Bongsu SHIN, Daeho YANG, Hongseok LEE, Seunghoon HAN
  • Publication number: 20220082832
    Abstract: An image display device includes a main light source configured to emit a first light; a display panel configured to modulate the first light to add image information to the first light; a holographic optical element (HOE) configured to diffract the first light emitted from the display panel to make the first light travel to a first region to generate a main image; a first optical system provided on a traveling path of the first light between the main light source and the HOE, the first optical system being configured to change the traveling path of the first light to be incident on the HOE along a first path; an auxiliary light source configured to emit a second light; and a second optical system provided on a traveling path of the second light, the second optical system being configured to change a traveling path of the second light to be incident on the HOE along a second path different from the first path.
    Type: Application
    Filed: March 2, 2021
    Publication date: March 17, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Bongsu SHIN, Geeyoung Sung, Sunil Kim, Seokil Moon, Wontaek Seo, Daeho Yang, Changkun Lee, Hongseok Lee
  • Publication number: 20210405388
    Abstract: Provided is a multi-image display apparatus including an image forming device configured to form a first image, a first polarization plate configured to transmit a first polarization component of the first image provided from the image forming device, a second polarization plate configured to transmit a second polarization component of a second image that is provided from a path different from the first image, the second polarization component being different from the first polarization component, a screen configured to reflect and diffuse the first image, and transmit the second image, and a polarization selective lens configured to focus the first image having the first polarization component, and transmit the second image having the second polarization component without refraction.
    Type: Application
    Filed: September 14, 2021
    Publication date: December 30, 2021
    Applicants: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Changkun LEE, Seokil Moon, Byoungho Lee, Wontaek Seo, Geeyoung Sung, Hongseok Lee
  • Patent number: 11150485
    Abstract: Provided is a multi-image display apparatus including an image forming device configured to form a first image, a first polarization plate configured to transmit a first polarization component of the first image provided from the image forming device, a second polarization plate configured to transmit a second polarization component of a second image that is provided from a path different from the first image, the second polarization component being different from the first polarization component, a screen configured to reflect and diffuse the first image, and transmit the second image, and a polarization selective lens configured to focus the first image having the first polarization component, and transmit the second image having the second polarization component without refraction.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: October 19, 2021
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Changkun Lee, Seokil Moon, Byoungho Lee, Wontaek Seo, Geeyoung Sung, Hongseok Lee
  • Publication number: 20210263318
    Abstract: An optical apparatus and a near-eye display apparatus including the same are provided. The optical apparatus includes a display panel configured to form an image, a first polarization rotator configured to electrically control a light emitted from the display panel to have a first polarization state, a first ¼ wave plate configured to convert the first polarization state of a light transmitted from the first polarization rotator to a second polarization state, and an optical element group configured to display a first image having a first viewing angle and a second image having a second viewing angle that is greater than the first viewing angle based on the second polarization state of a light transmitted from the first ¼ wave plate.
    Type: Application
    Filed: September 30, 2020
    Publication date: August 26, 2021
    Applicants: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Changkun Lee, Seokil Moon, Byoungho Lee, Geeyoung Sung, Hongseok Lee
  • Publication number: 20210191129
    Abstract: A display apparatus including a volume grating-based combiner is disclosed. The display apparatus includes: an image providing device; and a combiner, wherein the combiner includes a plurality of volume gratings configured to diffract light containing an image, which is emitted from the image providing device, each volume grating has a first surface and a second surface facing each other, and each volume grating is further configured to diffract light incident on the first surface and transmit therethrough light incident on the second surface without diffraction.
    Type: Application
    Filed: December 22, 2020
    Publication date: June 24, 2021
    Applicants: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Changkun LEE, Byoungho LEE, Jinsoo JEONG, Seokil MOON, Geeyoung SUNG, Hongseok LEE
  • Publication number: 20210048677
    Abstract: A see-through type display apparatus includes a see-through type optical system configured to transmit a first image via a first-path light, which is light traveling on a first path, to an ocular organ of a user, and a second image via a second-path light, which is light traveling on a second path, to the ocular organ of the user; and an incident light-dependent lens unit provided between the see-through type optical system and the ocular organ of the user and having different refractive powers according to characteristics of incident light, where the incident light-dependent lens unit has a positive first refractive power with respect to the first-path light and has a second refractive power different from the first refractive power with respect to the second-path light.
    Type: Application
    Filed: November 4, 2020
    Publication date: February 18, 2021
    Applicants: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Geeyoung Sung, Hongseok Lee, Byoungho Lee, Changkun Lee, Seokil Moon, Jongyoung Hong