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公开(公告)号：US20200285195A1
公开(公告)日：2020-09-10
申请号：US16464229
申请日：2019-01-03
Applicant: BOE Technology Group Co., Ltd.
Inventor： Bingchuan Shi
Abstract: A two-dimensional holographic image projection display method. The method includes illuminating a first modulating part of a spatial light modulator with a first incident light beam at a first incident angle with respect to a direction normal to a main surface of the spatial light modulator to form a first projection region on an imaging plane; and illuminating a second modulating part of the spatial light modulator with a second incident light beam at a second incident angle with respect to the direction normal to the main surface of the spatial light modulator to form a second projection region on the imaging plane. The first projection region abuts or partially overlaps with the second projection region at an interface substantially parallel to a lateral direction of the spatial light modulator.
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公开(公告)号：US10215908B1
公开(公告)日：2019-02-26
申请号：US15960802
申请日：2018-04-24
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Naifu Wu , Bingchuan Shi
Abstract: The present disclosure provides an optical waveguide and an optical device. The optical waveguide includes a first total reflection surface, a second total reflection surface, at least two transflective films, a first phase retardation film, and a second phase retardation film, each of the transflective films being configured to completely transmit light having a first polarization state, half transmit and half reflect light having a second polarization state, so that reflected light having the second polarization state propagates through the second phase retardation film and the second total reflection surface toward a target, thereby ensuring a transmission angle of the light output to the outside of the optical waveguide to be sufficiently small, which effectively solves the problem of the stray light, ensures the imaging quality, and improves the user's experience.
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公开(公告)号：US12010460B2
公开(公告)日：2024-06-11
申请号：US17427476
申请日：2020-10-29
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Tong Liu , Hao Chen , Bingchuan Shi , Hao Fang
Abstract: The monitoring device of the disclosure includes a carrying unit having at least one carrying area for carrying a monitored object, at least part of the carrying area is provided with a corresponding image capturing unit and a corresponding optical path adjusting unit; the image capturing unit captures a monitoring image of the carrying area, each image capturing unit has a preset field of view, each image capturing unit forms the monitoring image according to light incident from the field of view; at least part of the carrying area is an extension area, the extension area is positioned outside the field of view of the image capturing unit; the optical path adjusting unit enables the light emitted from the extension area of the carrying area corresponding thereto to enter the image capturing unit from the field of view of the image capturing unit corresponding to the carrying area.
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公开(公告)号：US11854249B2
公开(公告)日：2023-12-26
申请号：US17420114
申请日：2020-09-07
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Yue Li , Jibo Zhao , Guangwei Huang , Ruibin Xue , Bingchuan Shi
Abstract: A character recognition method includes: performing feature extraction on an image to be recognized to obtain a first feature map; processing the first feature map to at least obtain N first candidate carrier detection boxes, each first candidate carrier detection box being configured to outline a region of a character carrier; screening the N first candidate carrier detection boxes to obtain K first target carrier detection boxes; performing a feature extraction on the first feature map to obtain a second feature map; processing the second feature map to obtain L first candidate character detection boxes, each first candidate character detection box being configured to outline a region containing at least one character; screening the L first candidate character detection boxes to obtain J first target character detection boxes; and recognizing characters in the J first target character detection boxes to obtain J target character informations.
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公开(公告)号：US11561509B2
公开(公告)日：2023-01-24
申请号：US16464229
申请日：2019-01-03
Applicant: BOE Technology Group Co., Ltd.
Inventor： Bingchuan Shi
Abstract: A two-dimensional holographic image projection display method. The method includes illuminating a first modulating part of a spatial light modulator with a first incident light beam at a first incident angle with respect to a direction normal to a main surface of the spatial light modulator to form a first projection region on an imaging plane; and illuminating a second modulating part of the spatial light modulator with a second incident light beam at a second incident angle with respect to the direction normal to the main surface of the spatial light modulator to form a second projection region on the imaging plane. The first projection region abuts or partially overlaps with the second projection region at an interface substantially parallel to a lateral direction of the spatial light modulator.
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Patent Agency Ranking
公开(公告)号：US10802441B2
公开(公告)日：2020-10-13
申请号：US15920771
申请日：2018-03-14
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Bingchuan Shi
Abstract: The present disclosure provides an optical modulation device, an optical modulation method and a holographic display apparatus. The optical modulation device is configured to perform optical modulation of a light beam and comprising: an amplitude modulator, configured to perform amplitude modulation of the light beam based on amplitude information in complex amplitude information of each pixel of a digital hologram; an optical scanning assembly, configured to scan the light beam within a predetermined range; a phase modulator, configured to perform phase modulation of the light beam based on phase information in the complex amplitude information.
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公开(公告)号：US10775607B2
公开(公告)日：2020-09-15
申请号：US15750756
申请日：2017-06-30
Applicant: BOE Technology Group Co., Ltd.
Inventor： Yuxin Zhang , Bingchuan Shi , Xinyin Wu , Yong Qiao
Abstract: A backlight module, a holographic display device and a holographic display method thereof are provided. The backlight module includes a semi-transparent layer and a reflective layer which are disposed opposite to each other, a light source, and a deflectable optical device. The light source is configured to emit a light beam, the deflectable optical device is configured to deflect a propagation direction of the light beam emitted from the light source and make the reflected light beam enter between the semi-transparent layer and the reflective layer in an angle, and is deflectable to change the angle.
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公开(公告)号：US10698365B2
公开(公告)日：2020-06-30
申请号：US15710059
申请日：2017-09-20
Applicant: BOE Technology Group Co., Ltd.
Inventor： Bingchuan Shi
Abstract: The present disclosure provides a method for calculating a light field distribution in the process of generating a computer-generated hologram, including: performing a three-dimensional modeling to an object for which a hologram is to be generated so as to obtain a three-dimensional model of the object; determining the luminous characteristics of each voxel of the three-dimensional model at various azimuth angles within a viewing angle range of the hologram to be formed; and calculating a light field distribution of the object light wave of each voxel on the holographic plane based on the luminous characteristics of each voxel at various azimuth angles within the viewing angle range of the hologram to be formed. The present disclosure also provides a method and a system for generating a computer-generated hologram.
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公开(公告)号：US10558040B2
公开(公告)日：2020-02-11
申请号：US16022872
申请日：2018-06-29
Applicant: BOE Technology Group Co., Ltd.
Inventor： Bingchuan Shi
Abstract: The present disclosure provides in some embodiments a vehicle-mounted head-up display system, including a projector, a diffuser, and an imaging plate. The projector is configured to generate projection light beams in accordance with a to-be-projected image, so as to form a real image of the to-be-projected image at a light-entering surface of the diffuser. The diffuser is configured to expand the light beams and transmit the expanded light beams to the imaging plate. The imaging plate is configured to converge the expanded light beams into an imaging light beam, and transmit the imaging light beam to an interior of a vehicle through a front windshield of the vehicle, so as to form a virtual image of the to-be-projected image on a reverse extension line of the imaging light beam outside the vehicle.
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公开(公告)号：US10509227B2
公开(公告)日：2019-12-17
申请号：US15986931
申请日：2018-05-23
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Bingchuan Shi
Abstract: The present disclosure provides a head up display device and system, relating to the field of display technology. The head up display device includes: a first display image generator, configured to generate a first linearly polarized light containing a first image; a second display image generator configured to generate a second linearly polarized light containing a second image; wherein the polarization direction of the first linearly polarized light is perpendicular to the polarization direction of the second linearly polarized light; a first polarizing beam splitter configured to combine the first linearly polarized light and the second linearly polarized light; and an optical component containing a plurality of reflective imaging elements, wherein the optical component is configured to reflect the first image and the second image into a user's eye.
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