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1. 发明公开

EP4431999A1 IMAGE GENERATION APPARATUS, DISPLAY DEVICE AND VEHICLE 审中-实审
公开(公告)号：EP4431999A1
公开(公告)日：2024-09-18
申请号：EP22902920.2
申请日：2022-09-06
申请人： Huawei Technologies Co., Ltd.
发明人： CHEN, Yanzhe , FANG, Yuanrong , FANG, Zhifang
IPC分类号： G02B27/28
CPC分类号： G02B27/01 , G02B27/28
摘要： A picture generation apparatus (100), a display device, and a transportation means are provided, to alleviate a display defect of a part of colored lights, and improve overall imaging effect. The picture generation apparatus (100) includes: a light source (110), configured to provide a light beam; and a beam splitting unit (120), configured to separate a linearly polarized polychromatic light from the light beam, and input the linearly polarized polychromatic light into a spatial light modulator (130), where the spatial light modulator (130) is configured to perform light modulation on the linearly polarized polychromatic light based on picture data, and input a modulated linearly polarized polychromatic light into a polarization conversion unit (140); and the polarization conversion unit (140) is configured to convert a polarization direction of a first colored light in the modulated linearly polarized polychromatic light, and output an imaging light, where the imaging light includes the first colored light and a second colored light whose polarization directions are perpendicular to each other.

2. 发明公开

EP4105698A1 OPTICAL FIBER CONNECTOR, SINGLE-FIBER BIDIRECTIONAL OPTICAL ASSEMBLY, AND OPTICAL FIBER TRANSMISSION SYSTEM 审中-实审
公开(公告)号：EP4105698A1
公开(公告)日：2022-12-21
申请号：EP21776190.7
申请日：2021-03-19
申请人： Huawei Technologies Co., Ltd.
发明人： WEI, Su , LI, Shu , FANG, Zhifang
IPC分类号： G02B6/42
摘要： An optical fiber connector (15, 25, 35, 45, 55), a single-fiber bidirectional optical assembly, and an optical fiber transmission system are provided. The optical fiber connector (15, 25, 35, 45, 55) is used in the single-fiber bidirectional optical assembly. The single-fiber bidirectional optical assembly further includes a first optical module and a light filter (13, 23, 33, 43, 53). The optical fiber connector (15, 25, 35, 45, 55) includes an optical path changing module, an optical fiber (15.3, 25.3, 35.3, 45.3, 55.3), a ferrule (15.2, 25.4, 35.4, 45.4, 55.4), and a tube (25.5, 35.5, 45.5, 55.5). The optical fiber (15.3, 25.3, 35.3, 45.3, 55.3) is disposed in the ferrule (15.2, 25.4, 35.4, 45.4, 55.4), the optical path changing module is in contact connection to the ferrule (15.2, 25.4, 35.4, 45.4, 55.4), the optical path changing module and the ferrule (15.2, 25.4, 35.4, 45.4, 55.4) that are in contact connection are fastened through the tube (25.5, 35.5, 45.5, 55.5), and an optical path port (25.5.1, 35.5.1, 45.5.1, 55.5.1) is disposed at a location that is on the tube (25.5, 35.5, 45.5, 55.5) and that opposites to the first optical module. The optical path changing module is configured to change a transmission path of a first optical signal. When the single-fiber bidirectional optical assembly distinguishes between beams with a small wavelength difference, after an offset angle of the light filter (13, 23, 33, 43, 53) is changed, the transmission path of the first optical signal can be changed by the optical path changing module, so that the first optical module can transmit or receive the first optical signal through the optical path port (25.5.1, 35.5.1, 45.5.1, 55.5.1). In this way, there is no need to adjust a location of the first optical module or increase a volume of the single-fiber bidirectional optical assembly.

3. 发明公开

EP3512154A1 ENCODING APPARATUS, AND QUANTUM KEY DISTRIBUTION DEVICE AND SYSTEM BASED ON SAME 有权
公开(公告)号：EP3512154A1
公开(公告)日：2019-07-17
申请号：EP17854788.1
申请日：2017-09-23
申请人： Huawei Technologies Co., Ltd.
发明人： LIANG, Wenye , SU, Changzheng , XIAO, Xinhua , FANG, Zhifang
IPC分类号： H04L9/08 , H04B10/70
摘要： The present invention discloses an encoding apparatus, including: a polarization splitter-rotator PSR, a polarization rotation structure, and a modulator, where the PSR is configured to: receive an input signal light, split the input signal light into two parts whose polarization modes are the same, and send the two parts to the polarization rotation structure and the modulator respectively; the polarization rotation structure, which is connected to the PSR and the modulator, has functions of rotating, by 180 degrees, a polarization direction of an optical signal entering the polarization rotation structure from one end, and keeping a polarization direction of an optical signal entering the polarization rotation structure from the other end unchanged; the modulator is configured to modulate a light input to the modulator; and the PSR is further configured to receive signal lights sent by the polarization rotation structure and the modulator, combine the two signal lights to obtain an output signal light, and send the output signal light. According to embodiments of the present invention, a high-rate modulator can be supported, to meet high-speed communication requirements.

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