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公开(公告)号：US11487153B2
公开(公告)日：2022-11-01
申请号：US17001395
申请日：2020-08-24
发明人： Sang Ho Kim , Duk Ho Lee , Young Chan Kim , Ki Seung Bang , Chang Won Jang , Ji Won Lee , Cheon Myeong Lee , Byoung Ho Lee
IPC分类号： G02F1/13357 , G03H1/32
摘要： A backlight device includes: a light source to emit coherent light; an optical path difference generator on the light source, the optical path difference generator including an incident surface and a plurality of light emitting surfaces, the light emitting surfaces being parallel to the incident surface and having different separation distances from the incident surface; a light condenser on the optical path difference generator; a diffuser on the light condenser; and a collimator on the diffuser.
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公开(公告)号：US11816922B2
公开(公告)日：2023-11-14
申请号：US16975244
申请日：2019-12-31
发明人： Byoung Ho Lee , Jae Bum Cho , Dong Heon Yoo , Min Seok Chae , Ju Hyun Lee
CPC分类号： G06V40/1359 , G06T11/00 , G06V10/70
摘要： A fingerprint extraction apparatus includes a fingerprint generation module configured to generate first and second virtual fingerprint images, perform primary image processing on the first virtual fingerprint image and primary and secondary image processing on the second virtual fingerprint images, and generate virtual overlapped fingerprint images by combining the first and second virtual fingerprint images on which image processing is performed; a machine learning module configured to generate a learning model by performing machine learning using the virtual overlapped fingerprint images as input data; and a fingerprint extraction module configured to extract a fingerprint located vertically on a center of a real image by inputting the real image to a target fingerprint extraction learning model, and the primary image processing comprises image processing on a curve forming a fingerprint, and the secondary image processing comprises image processing on a location of the fingerprint in the image.
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公开(公告)号：US11429016B2
公开(公告)日：2022-08-30
申请号：US17290696
申请日：2019-10-31
发明人： Young Jin Jo , Seung Jae Lee , Dong Heon Yoo , Byoung Ho Lee
IPC分类号： G03B21/14 , H04N13/322 , G03B21/20 , H04N13/32 , H04N13/363 , H04N13/398 , H04N9/31
摘要： The present disclosure relates to a projection device, and more particularly, to a projection device including: a projector module configured to provide an image to a screen; and a lens module between a user's eyes and the screen, wherein the project module includes: a display module configured to provide a certain image; and a backlight module configured to provide light to the display module such that the image provided by the display module is projected on the screen, wherein the display module is between the backlight module and the screen, the display module is configured to induce a convergence reaction on the user's eyes such that the image projected on the screen has a convergence distance, and the lens module is configured to induce a focus reaction on the user's eyes and change a focal length of the image reproduced by the display module within a certain range.
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公开(公告)号：US11466838B2
公开(公告)日：2022-10-11
申请号：US16780924
申请日：2020-02-04
发明人： Yongtaek Hong , Seung Hwan Lee , Hyung Soo Yoon , Byoung Ho Lee , Chan Hyung Yoo , Dong Yeon Kim
摘要： Provided are a multi-flexible display device having improved image discontinuity at a panel boundary, and a method of manufacturing a double-sided reflector therefor. An image discontinuity phenomenon at a boundary between panels of a multi-flexible display device manufactured by tiling a plurality of flexible displays including a bendable panel may be easily and simply ameliorated using a double-sided reflector capable of being manufactured through a simple process and at low cost.
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