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公开(公告)号：US11630381B2
公开(公告)日：2023-04-18
申请号：US16612725
申请日：2017-07-28
发明人： Zuqiang Guo , Fei Hu , Yi Li
摘要： An excitation light intensity control system, including a lighting part, an imaging part and a control part. The lighting part includes a light source; the imaging part includes a light modulator and a color conversion element; the excitation light emitted from the light source is imported to the light modulator for modulation; the modulated excitation light excites the color conversion element to produce multicolor excited light; the lighting part further includes a light recycling system used for recoupling part of the excitation light emitted from the light modulator to be incident to the light modulator; the control part includes a controller used for receiving original image data and controlling the intensity of the excitation light emitted from the light modulator and/or the light source.
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公开(公告)号：US20220412807A1
公开(公告)日：2022-12-29
申请号：US16622512
申请日：2017-09-26
发明人： Zhengde Zhang , Qiang Lv , Le Pan , Yi Li
IPC分类号： G01J9/00
摘要： A color wheel phase detection method and system, and a projection device. The phase detection system comprises a color wheel (1), a color wheel motor (2) that drives the color wheel (1) to rotate, and a control circuit (3); the color wheel motor (2) is a three-phase motor, and the control circuit (3) comprises a three-phase driving circuit (31) for driving the color wheel motor (2) to operate. The phase detection system further comprises a phase detection device (4) for detecting the three-phase driving circuit (31); when detecting a preset phase, the phase detection device (4) sends a pulse signal to the control circuit (3) to implement color wheel phase detection. Therefore, the effects of low costs, high accuracy, and high reliability are achieved.
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公开(公告)号：US20220269158A1
公开(公告)日：2022-08-25
申请号：US17663405
申请日：2022-05-13
摘要： The present disclosure provides a display device and a control method thereof. The control method of the display device comprises: obtaining, based on the first light output ratio and the second light output ratio, a first luminous flux set composed of values of luminous fluxes output by a combination path at a current bit depth, and a second luminous flux set composed of values of luminous fluxes output by the combination path at a target bit depth respectively; obtaining, based on the first luminous flux set and the second luminous flux set, a value of a luminous flux to be expanded to achieve the target bit depth at the current bit depth; and adjusting a mapping relationship between the value of each luminous flux to be expanded and a value of a maximum luminous flux in the first luminous flux set corresponding to the current bit depth based on a display bit depth of the display device.
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公开(公告)号：US11422450B2
公开(公告)日：2022-08-23
申请号：US17048570
申请日：2018-12-03
发明人： Zu-Qiang Guo , Bing-Ke Yang , Yi Li
IPC分类号： G03B21/20
摘要： A light source device, comprising an excitation light source, a wavelength conversion element, a transparent substrate, and a light splitter. The wavelength conversion element comprises a wavelength conversion area and a scattering area. The excitation light source emits excitation light that has a first polarization state. The transparent substrate guides first part of the excitation light to the scattering area and guides second part of the excitation light to the light splitter; and the light splitter guides, directly or by means of a guiding device, the second part of the excitation light to the wavelength conversion area. The scattering area scatters the first part of the excitation light and guides the scattered first part of the excitation light to the transparent substrate; and the transparent substrate and the light splitter guide the scattered first excitation light to a light-emitting channel directly or by means of the guiding device.
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公开(公告)号：US11388345B2
公开(公告)日：2022-07-12
申请号：US16626061
申请日：2017-09-26
IPC分类号： H04N5/235 , G09G3/20 , G09G3/34 , G09G3/36 , G09G3/3233
摘要： An image data processing device includes a data acquisition module for acquiring image data including original data information of images, the original data information of each image including the luminance value of each pixel in the image, and the luminance range that the image data may represent being Lmin-Lmax; a data conversion module for receiving the image data and converting the original data information of each image into new data information; and a data output module for outputting the new data information of each image in the data conversion module together with the corresponding maximum relative luminance value η thereof. A capturing equipment and a display system are also provided.
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公开(公告)号：US11378876B2
公开(公告)日：2022-07-05
申请号：US17273250
申请日：2019-03-01
发明人： Zuqiang Guo , Ning Lu , Yi Li
摘要： A light source device, including: an excitation light source; a supplementary light source; and a color wheel, the excitation light source emits first color light to the color wheel, the color wheel includes a first light-emitting region and a wavelength conversion region sequentially arranged along circumferential direction, and a supplementary light-emitting region located on inner or outer side of the wavelength conversion region, the first light-emitting region receives the first color light in a first time period and emit it, the wavelength conversion region receives the first color light in a second time period and emit excited light, and the supplementary light source emits, during the second time period, a supplementary light that broadens a color gamut and at least partially overlaps with a spectrum of the excited light, and the supplementary light from the supplementary light-emitting region is combined with the excited light from the wavelength conversion region.
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公开(公告)号：US11306899B2
公开(公告)日：2022-04-19
申请号：US16614105
申请日：2017-08-09
发明人： Zuqiang Guo , Peng Du , Yi Li
摘要： A light source system includes an exciting light source, a collection system, a wavelength conversion device, a relay system, an optical-mechanical system, a detection device, and a distance adjustment device. The exciting light source emits exciting light. The conversion region converts the exciting light into excited light. Optical axes of the excited light and the exciting light that are emitted from the wavelength conversion device do not coincide with each other. The excited light and exciting light collected by the collection system are guided to the optical-mechanical system via the relay system. The detection device detects information on brightness and/or color coordinates of the light emitted from the optical-mechanical system. The distance adjustment device adjusts a distance between the collection system and the wavelength conversion device in such a manner that the brightness and/or color coordinates of the light emitted from the optical-mechanical system meet a preset condition.
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公开(公告)号：US11300868B2
公开(公告)日：2022-04-12
申请号：US16772641
申请日：2018-01-31
发明人： Fei Hu , Zuqiang Guo , Yi Li
IPC分类号： G03B21/60 , G03B21/56 , G03B21/604 , G02B5/18 , G03B21/62
摘要： A projection screen, comprising a screen substrate and a plurality of light reflecting portions, wherein the light reflecting portion is arranged on an incident side of the screen substrate, and has a first surface and a second surface that face different directions, the first surface facing an incident direction of projection light, and the plurality of light reflecting portions are continuously arranged on the screen substrate to form a structure of sawtooth shape, wherein a light absorbing layer is provided on the second surface; and a wavelength-selection filter layer is provided on the first surface, and the wavelength-selection filter layer is configured to reflect the projection light and transmit and absorb at least part of ambient light.
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公开(公告)号：US11202042B2
公开(公告)日：2021-12-14
申请号：US16981389
申请日：2018-11-05
发明人： Xin Yu , Fei Hu , Zu-Qiang Guo , Yi Li
IPC分类号： H04N9/31
摘要： A display apparatus comprising a light source device, an image data processing module, a light modulation device, and an image synthesizing device. The light source device is configured to emit first light and second light. The image data processing module is configured to receive original image data of an image to be displayed, the original image data of the image to be displayed being image data based on a second color gamut range and comprising original control signal values of m colors of pixels, and the second color gamut range covers a first color gamut range and has a portion beyond the first color gamut range. The image data processing module further maps the original control signal values as m corrected control signal values and n control signal values.
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公开(公告)号：US20210286246A1
公开(公告)日：2021-09-16
申请号：US17336076
申请日：2021-06-01
发明人： Fei Hu , Zuqiang Guo , Yi Li
摘要： Provided is a light-source system, comprising excitation light source, first supplementary light source, first light-guiding assembly, wavelength conversion apparatus, and second light-guiding assembly. The excitation light source is for emitting excitation light; the first supplementary light source is for emitting first supplementary light. The first light-guiding assembly is for guiding the excitation light to the wavelength conversion apparatus. The wavelength conversion apparatus is far converting, excitation light to excited light and irradiate onto the first light-guiding assembly. The first light-guiding assembly is for guiding excited light to irradiate onto the second light-guiding assembly At least some components of the second light-guiding assembly are arranged on the light path from the first light-guiding assembly. The second light-guiding assembly is for guiding the excited light and/or the first supplementary light, such that the first supplementary light and at least part of the excited light are output from same emission channel.
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