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公开(公告)号：US20210248952A1
公开(公告)日：2021-08-12
申请号：US17167151
申请日：2021-02-04
摘要： A display apparatus including: image renderer including light-emitting diodes that are to be employed as sub-pixels of image renderer; liquid-crystal device including liquid-crystal structure and control circuit, wherein liquid-crystal structure is arranged in front of light-emitting diodes of image renderer, wherein liquid-crystal structure is to be electrically controlled, via control circuit, to shift light emanating from light-emitting diode to target positions on image plane according to shifting sequence in repeated manner; and processor(s) configured to render output sequence of output image frames via image renderer, wherein shift in light emanating from light-emitting o diode to target positions causes resolution of output image frames to appear higher than display resolution of image renderer.
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公开(公告)号：US20210247607A1
公开(公告)日：2021-08-12
申请号：US17155621
申请日：2021-01-22
摘要： A display apparatus including pose-tracking means; image renderer per eye; liquid-crystal device including liquid-crystal structure and control circuit; and processor. Processor is configured to: process pose-tracking data to determine user's head pose; detect if rate at which head pose is changing is below predefined threshold rate; if yes, switch on lock mode, select head pose for session of lock mode, and generate output image frames according to head pose during session; if no, generate output image frames according to corresponding head poses of user using pose-tracking data; and display output image frames, whilst shifting light emanating to from pixels of image renderer to multiple positions (P1-P9) in sequential and repeated manner, said shifting causes resolution of output image frames to appear higher than display resolution of image renderer.
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公开(公告)号：US11030720B2
公开(公告)日：2021-06-08
申请号：US16431335
申请日：2019-06-04
发明人： Klaus Melakari , Mikko Ollila
IPC分类号： G06T3/40 , G06T5/00 , H04N13/383 , H04N13/239 , H04N13/344
摘要： A direct retinal projection apparatus including means for detecting a gaze direction of a user, a projector, a first optical element, an actuator and a processor. The first optical element includes different optical portions having different optical properties with respect to magnification. The processor is configured to render a warped image having a spatially-uniform angular resolution via the projector, whilst adjusting an orientation of the first optical element via the actuator, based on the detected gaze direction, to direct a projection of the warped image from the first optical element towards a retina of a user's eye. Projections of different portions of the warped image are differently magnified by the different optical portions of the first optical element to produce on the retina of the user's eye a de-warped image having a spatially-variable angular resolution.
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4.发明授权公开(公告)号：US10771774B1
公开(公告)日：2020-09-08
申请号：US16361669
申请日：2019-03-22
发明人： Klaus Melakari , Evgeny Shirko
IPC分类号： H04N13/383 , H04N13/332 , H04N13/106 , G06F3/01
摘要： A display apparatus includes an image renderer per eye, at least one optical element arranged on an optical path between the image renderer and an image plane and a processor coupled to the image renderer. The processor or an image source communicably coupled to the processor is configured to generate a warped image based upon the optical properties of the first optical portion and the second optical portion. The processor is configured to render the warped image via the image renderer, wherein projections of a first portion and a second portion of the warped image are to be differently magnified by the first optical portion and the second optical portion of the at least one optical element, respectively, to produce the image on the image plane in a manner that the produced image appears de-warped to a user. The image has a spatially-variable angular resolution on an image plane.
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公开(公告)号：US20200166752A1
公开(公告)日：2020-05-28
申请号：US16200020
申请日：2018-11-26
摘要： A display for use in a display apparatus. The display includes a first display part having a first display resolution, and a second display part having a second display resolution, the second display resolution being higher than the first display resolution, the first display part and the second display part being arranged in a manner that a display area of the second display part is substantially surrounded by a display area of the first display part.
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公开(公告)号：US10564429B2
公开(公告)日：2020-02-18
申请号：US15885984
申请日：2018-02-01
摘要： A gaze-tracking system for use in a head-mounted display apparatus, and a method of tracking a user's gaze, via such a gaze-tracking system. The gaze-tracking system includes a plurality of illuminators for emitting light pulses to illuminate a user's eye when the head-mounted display apparatus is worn by the user, the illuminators including at least a first illuminator and a second illuminator; at least one lens positioned on an optical path of reflections of the light pulses from the user's eye, the at least one lens having no chromatic-aberration correction; at least one camera for capturing an image of the reflections of the light pulses; and a processor coupled with illuminators and the at least one camera, the processor being configured to control operations of the illuminators and the at least one camera, and to process the captured image to detect a gaze direction of the user.
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公开(公告)号：US10382699B2
公开(公告)日：2019-08-13
申请号：US15643574
申请日：2017-07-07
发明人： Roope Rainisto , Klaus Melakari
摘要： An imaging system and a method of producing images for a display apparatus, via the imaging system includes at least one focusable camera for capturing at least one image of a given real-world scene; means for generating a depth map or a voxel map of the given real-world scene; and a processor coupled to the focusable camera and the aforesaid means. The processor is communicably coupled with the display apparatus. The processor is configured to receive information of the gaze direction of the user; map the gaze direction to the depth map or the voxel map to determine an optical depth of a region of interest in the given real-world scene; and control the focusable camera to employ a focus length that is substantially similar to the determined optical depth of the region of interest when capturing the at least one image.
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公开(公告)号：US20180157910A1
公开(公告)日：2018-06-07
申请号：US15886040
申请日：2018-02-01
摘要： A gaze-tracking system for use in a head-mounted display apparatus. The gaze-tracking system includes: at least one first optical element comprising particles of a phosphorescent or fluorescent material dispersed therein, the particles of the phosphorescent or fluorescent material being dispersed in a manner that when excited by electromagnetic radiation incident thereupon, the particles produce structured light of a given wavelength, wherein the produced structured light illuminates a user's eye; at least one camera for capturing an image of reflections of the structured light from the user's eye, wherein the image is representative of a form of the reflections and a position of the reflections on an image plane of the at least one camera; and a processor coupled in communication with the at least one camera, wherein the processor is configured to process the captured image to detect a gaze direction of the user.
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公开(公告)号：US20210141450A1
公开(公告)日：2021-05-13
申请号：US16676517
申请日：2019-11-07
发明人： Klaus Melakari , Urho Konttori
摘要： A system for producing images for a display apparatus. The system includes image source(s) and processor. The processor is configured to obtain information indicative of angular size of field of view providable by image renderer of display apparatus; obtain information indicative of gaze direction of user; receive sequence of images from image source(s); and process sequence of images to generate sequence of processed images. When processing sequence of images, processor is configured to crop a given image, based on gaze direction of user and angular size of field of view, to generate processed image. Angular size of field of view represented by processed image is larger than angular size of field of view providable by the image renderer.
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公开(公告)号：US20200241298A1
公开(公告)日：2020-07-30
申请号：US16260254
申请日：2019-01-29
摘要： A display apparatus includes a plurality of housings connected by adjustable device for setting spacing between centers of the plurality of housings, each housing including: first image source mounted to side of housing; second image source mounted to housing angularly offset from first image source, wherein second image source includes higher resolution and narrower image field of view than first image source; optical combiner positioned in housing between first and second image sources, on which first image from first image source and second image from second image source are superimposed and made visible to user's eye; magnification lens for magnifying second image to increase image field of view; eyepiece lens for reducing focal distance between the optical combiner and the user's eye; and controller configured to control output of second image source to render colors to compensate for distortion and chromatic aberrations introduced by magnification lens.
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