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公开(公告)号：US11815655B2
公开(公告)日：2023-11-14
申请号：US17323495
申请日：2021-05-18
发明人： Kyookeun Lee , Kyusub Kwak , Bonkon Koo , Jeonggeun Yun , Wonjun Lee , Myongjo Choi , Jongchul Choi
CPC分类号： G02B7/287 , G02B27/0172 , G02B27/0179 , G02F1/29 , G02B2027/0187
摘要： An augmented reality (AR) device including a variable focus lens of which a focal length may be changed by adjusting refractive power and adjusting the position of a focus adjustment region of the variable focus lens according to a direction of the user's view. The AR device may obtain an eye vector indicating a direction of the user's view using an eye tracker, adjust a refractive power of a first focus adjustment region of a first variable focus lens to change a focal length for displaying a virtual image, and complementarily adjust a refractive power of a second focus adjustment lens with respect to the adjusted refractive power of the first focus adjustment region.
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公开(公告)号：US20210278630A1
公开(公告)日：2021-09-09
申请号：US17323495
申请日：2021-05-18
发明人： Kyookeun Lee , Kyusub Kwak , Bonkon Koo , Jeonggeun Yun , Wonjun Lee , Myongjo Choi , Jongchul Choi
摘要： An augmented reality (AR) device including a variable focus lens of which a focal length may be changed by adjusting refractive power and adjusting the position of a focus adjustment region of the variable focus lens according to a direction of the user's view. The AR device may obtain an eye vector indicating a direction of the user's view using an eye tracker, adjust a refractive power of a first focus adjustment region of a first variable focus lens to change a focal length for displaying a virtual image, and complementarily adjust a refractive power of a second focus adjustment lens with respect to the adjusted refractive power of the first focus adjustment region.
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3.发明授权公开(公告)号：US11543662B2
公开(公告)日：2023-01-03
申请号：US17027860
申请日：2020-09-22
发明人： Kyookeun Lee , Jeonggeun Yun , Myongjo Choi , Kyusub Kwak , Wonjun Lee , Jongchul Choi
摘要： Provided is an augmented reality device including a display element configured to generate a first image, an optical coupler including a first surface through which the first image is input and a second surface opposite the first surface and configured to output light that is input through the first surface to the second surface and output light that is input through the second surface to the first surface, a reflective polarizer provided on the side of the second surface of the optical coupler and configured to reflect light with a first polarization and transmit light with a second polarization different from the first polarization, and a polarization selective variable focus lens provided in a traveling path of the light with the first polarization reflected by the reflective polarizer and having variable refractive power with respect to the light with the first polarization.
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公开(公告)号：US11061238B2
公开(公告)日：2021-07-13
申请号：US16921180
申请日：2020-07-06
发明人： Myongjo Choi , Kyusub Kwak , Jeongeun Yun , Kyookeun Lee , Wonjun Lee , Jongchul Choi
摘要： An electronic device for displaying AR includes: an optical engine; a first polarizer; a polarization converter configured to maintain or convert a polarization direction of light of a real scene; a waveguide from which light of a virtual image is output and through which the light of the real scene is transmitted; a focus tunable lens; a second polarizer; and one or more processors. The one or more processors are configured to, during a first period, control the polarization converter to convert a polarization direction of a first light of the real scene such that at least part of the first light of the real scene is blocked by the second polarizer, and during a second period, control the polarization converter to maintain a polarization direction of a second light of the real scene such that the second light of the real scene is transmitted through the second polarizer.
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公开(公告)号：US11543566B2
公开(公告)日：2023-01-03
申请号：US16715163
申请日：2019-12-16
发明人： Kyusub Kwak , Kyookeun Lee , Wonjun Lee , Myongjo Choi
摘要： An image display apparatus including a first waveguide, a second waveguide, a focus tunable lens positioned between the first waveguide and the second waveguide, and a display engine configured to control a focal length of the focus tunable lens and control the display engine to output first light forming the first virtual image and second light forming the second virtual image, wherein at least a portion of the first light is diffracted from the first waveguide and at least a portion of the second light diffracted from the second waveguide is incident on the first waveguide through the focus tunable lens.
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公开(公告)号：US11256098B2
公开(公告)日：2022-02-22
申请号：US17336707
申请日：2021-06-02
发明人： Myongjo Choi , Kyusub Kwak , Jeongeun Yun , Kyookeun Lee , Wonjun Lee , Jongchul Choi
摘要： An electronic device for displaying augmented reality (AR) includes: an optical engine configured to output light of virtual image; a waveguide from which the light of the virtual image is output and through which light of a real scene is transmitted; an optical shutter configured to transmit or block the light of the real scene; a focus tunable lens configured to adjust a focal length for the light of the virtual image output from the waveguide; and one or more processors configured to, during a first period, control the optical shutter to block at least part of a first light of the real scene, and control the focus tunable lens to have a first focal length, and during a second period, control the optical shutter to transmit a second light of the real scene, and control the focus tunable lens to have a second focal length different from the first focal length.
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公开(公告)号：US20230114190A1
公开(公告)日：2023-04-13
申请号：US17962176
申请日：2022-10-07
发明人： Jaeyeol RYU , Jeonggeun Yun , Kyusub Kwak , Youngmo Jeong , Myungjo Choi , Jongchul Choi
摘要： A waveguide and an augmented reality (AR) device employing the waveguide are disclosed. The waveguide includes a waveguide body, an input-coupling element inputting a light into the waveguide body, a reflective element disposed at one side of the waveguide body and again inputting a light that is not input into the waveguide body or is transmitted through the waveguide body into the waveguide body, and an output-coupling element outputting a light propagating inside the waveguide body to an outside.
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公开(公告)号：US20230085129A1
公开(公告)日：2023-03-16
申请号：US17877413
申请日：2022-07-29
发明人： Youngmo JEONG , Kyusub Kwak , Jaeyeol Ryu , Jeonggeun Yun , Myongjo Choi , Jongchul Choi
摘要： Provided is an electronic device including an optical engine including a projection lens configured to project light of a virtual image, a waveguide including an input grating on which the light of the virtual image is incident, an actuator configured to adjust a position of the projection lens relative to an optical axis of the projection lens, a light sensor configured to detect light passing through the input grating, a memory configured to store one or more instructions, and a processor configured to execute the one or more instructions to obtain a degree of parallelism of the light detected by the light sensor, obtain, based on the degree of parallelism of the light, a position adjustment value of the projection lens to detect light, and control the actuator to adjust a distance between the projection lens and the waveguide based on the position adjustment value.
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公开(公告)号：US20230077073A1
公开(公告)日：2023-03-09
申请号：US17967525
申请日：2022-10-17
发明人： Jeongwon Kim , Sangho Yoon , Kyusub Kwak , Jaewoo Ko
摘要： A method of obtaining a depth map, performed by an augmented reality (AR) device including a depth sensor, includes: sensing a motion of the AR device worn by a user; identifying an activity of the user, based on the sensed motion of the AR device; determining a light pattern of emission light to be emitted by the depth sensor, based on the identified activity; controlling the depth sensor to emit emission light in the determined light pattern; receiving reflection light obtained by reflection of the emission light by at least one object; and obtaining the depth map, based on the emission light and the received reflection light.
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公开(公告)号：US11092806B2
公开(公告)日：2021-08-17
申请号：US16718387
申请日：2019-12-18
发明人： Wonjun Lee , Kyusub Kwak , Kyookeun Lee , Myongjo Choi
IPC分类号： G02B27/01
摘要： An image display apparatus includes a first waveguide, a second waveguide positioned at one side of the first waveguide, a first diffraction grating positioned at an other side of the first waveguide, a second diffraction grating positioned between the first waveguide and the second waveguide and a display engine configured to control a shape of the second diffraction grating according to a quantity of light diffracted from the first diffraction grating, wherein at least a portion of light incident on the first waveguide is diffracted from the first diffraction grating, and at least a portion of light incident on the second waveguide, is diffracted from the second diffraction grating.
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