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公开(公告)号：US11256008B2
公开(公告)日：2022-02-22
申请号：US16498760
申请日：2018-10-10
Applicant: South China Normal University , Shenzhen Guohua Optoelectronics Co., Ltd. , Academy of Shenzhen Guohua Optoelectronics
Inventor： Guofu Zhou , Xiaowen Hu , Wei Zhao , Qiumei Nie , Weijie Zeng , Haitao Sun
Abstract: Disclosed are a laser protective film and a laser protective device comprising the same. The laser protective film comprises, stackingly disposed: a first liquid crystal polymer layer for reflecting left-hand polarized light, a second liquid crystal polymer layer for reflecting right-hand polarized light, and a third liquid crystal polymer layer for absorbing incident laser. In the above way, the laser protective film of the present disclosure has a large angle of protection, high flexibility. In addition, it is easy to find any damage to the laser protective film of the present disclosure. Moreover, it can make modification to existing equipment. Thus, the present disclosure has a good application prospect in many fields such as laser goggles, window glass and the like.
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82.发明申请公开(公告)号：US20220003607A1
公开(公告)日：2022-01-06
申请号：US17298615
申请日：2020-03-30
Applicant: SOUTH CHINA NORMAL UNIVERSITY
Inventor： Xiaoxu Lv , Chengxin Zhou , Liyun Zhong , Qinwen Ning , Shengde Liu
IPC: G01J3/45 , G01J3/02 , G01J3/12 , G02F1/13363
Abstract: A differential interference imaging system capable of rapidly changing shear direction and amount includes: a light source (101), a filter (102), a polarizer (103), a sample stage (104), an infinite imaging microobjective (105), a tube lens (106), a shear component, an analyzer (113), and an image sensor (114). After the light intensity and a polarization direction is adjusted, the linearly polarized light passes through a transparent sample, to be collected by the infinite imaging microobjective (105) and to implement imaging through the tube lens (106). An imaging beam is divided into two linearly polarized light fields which are perpendicular to each other in the polarization directions and have tiny shear amount, then they are further combined into an interference light filed by the analyzer (103) to form a differential interference image in the image sensor (114). The system may be flexibly assembled, is simple in structure and easy to implement.
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公开(公告)号：US11175436B2
公开(公告)日：2021-11-16
申请号：US16499035
申请日：2018-10-10
Applicant: South China Normal University , Shenzhen Guohua Optoelectronics Co., Ltd. , Academy of Shenzhen Guohua Optoelectronics
Inventor： Guofu Zhou , Xiaowen Hu , Wei Zhao , Haitao Sun , Qiumei Nie
Abstract: A dye-doped laser protective film is disclosed, comprising a polymer layer A and a polymer layer B. The polymer molecules in the polymer layer A are arranged in a left-handed helical structure which can reflect a left-handed polarized laser. The polymer molecules in the polymer layer B are arranged in a right-handed helical structure which can reflect a right-handed polarized laser. The combination of the polymer layer having the left-handed helical structure and the polymer layer having the right-handed helical structure can completely reflect circularly polarized light. In addition, the dye can absorb incident laser, so as to expand the protection angle of the laser protective film. The dye-doped laser protective film of the present disclosure has a simple manufacturing process, large protection angle and good flexibility, and can refit existing devices. Thus, the dye-doped laser protective film of the present disclosure has a good application prospect in many fields such as laser goggles, window films and the like.
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84.发明授权公开(公告)号：US11111317B2
公开(公告)日：2021-09-07
申请号：US16770983
申请日：2018-12-12
Applicant: SOUTH CHINA NORMAL UNIVERSITY
Inventor： Ruqiang Huang , Jingwen Zhang , Jinghui Wang , Qian Wang , Linlin Gao
IPC: C08B37/00 , A61P19/06 , A61K31/715
Abstract: A Cordyceps militaris medium polysaccharide, a method for separating and purifying same, and the use thereof, wherein the polysaccharide comprises the following monosaccharides in mole percentages: 0.11% ribose, 0.11% rhamnose, 0.45% arabinose, 0.13% xylose, 14.50% mannose, 83.96% glucose, and 0.73% galactose. The extraction method does not affect the biological activity of the Cordyceps militaris medium polysaccharide P1; the obtained purified polysaccharide P1 has high purity and stable properties, and has significant effects on resistance to oxidation, lowering uric acid and bacteriostasis, which are beneficial to human metabolism; due to the low cost, the purified polysaccharide P1 can be further used in the development of health products, drugs and cosmetics.
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公开(公告)号：US20210166390A1
公开(公告)日：2021-06-03
申请号：US16794897
申请日：2020-02-19
Applicant: South China Normal University , Guangmeiyuan R & D Center, Key Laboratory of Insect Developmental Biology and Applied Technology, So
Abstract: A method, apparatus and storage medium for analyzing insect feeding behaviors are disclosed. The method comprises detecting insects in a video recording feeding activities of the insects by deep learning using a neural network to obtain a detection result, obtaining insect trajectories according to the detection result, and obtaining an analysis result according to the insect trajectories. According to the present disclosure, the detection and analysis are performed on a pre-recorded video by deep learning using a neural network, and then the insect trajectories and an analysis result are obtained according to the detection result, thus manual observation, recording and analysis are not needed, the efficiency is high. Besides, subjective assumptions are eliminated for higher accuracy. The present disclosure, as a method, apparatus and storage medium for analyzing insect feeding behaviors, can be widely used in the field of insect behavior analysis.
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Patent Agency Ranking
公开(公告)号：US20200326591A1
公开(公告)日：2020-10-15
申请号：US16498733
申请日：2018-10-10
Applicant: South China Normal University , Shenzhen Guohua Optoelectronics Co., Ltd. , Academy of Shenzhen Guohua Optoelectronics
Inventor： Guofu ZHOU , Xiaowen HU , Wei ZHAO , Weijie ZENG
IPC: G02F1/1335 , G02F1/137 , G02F1/1334 , C08F2/50 , C08K5/07 , C08K5/3475 , C08F222/20
Abstract: An electrically-responsive infrared reflective device filled with positive liquid crystals, a chiral doping agent, a light absorbing agent and a polymer network. The light absorbing agent is capable of causing a gradient change in light intensity in the filled area irradiated by ultraviolet light, so that the concentration of the polymer network changes in a gradient, thereby forming a gradient of pitch of the positive liquid crystal helix structure. When a power supply voltage is applied, the long axis of the positive liquid crystal will rotate in a direction parallel to the electric field. Since the anchoring effect of the polymer network on the liquid crystals decreases with the decrease of the concentration of the polymer network, the pitch of the positive liquid crystals is gradually damaged, such that the infrared reflection bandwidth of the infrared reflective device gradually reduces from a long wavelength to 0 nm.
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公开(公告)号：US20200041827A1
公开(公告)日：2020-02-06
申请号：US16491490
申请日：2017-11-15
Applicant: South China Normal University , Shenzhen Guohua Optoelectronics Co., Ltd. , G.H.S ADVANCED EQUIPMENT TECHNOLOGY CO., LTD.
Inventor： Guofu ZHOU , Xiaowen HU , Nan LI
IPC: G02F1/1334 , G02F1/137
Abstract: A total-reflection infrared reflection device and a preparation method thereof. The device includes two light-transmitting conductive substrates disposed oppositely, the two light-transmitting conductive substrates are packaged to form a seal cavity, in the seal cavity, opposite surfaces of the two light-transmitting conductive substrates are respectively coated with a first liquid crystal layer capable of reflecting left-handed polarized light and a second liquid crystal layer capable of reflecting right-handed polarized light, the first liquid crystal layer includes a polymer network and a cholesteric liquid crystal with a left-handed spiral structure, the second liquid crystal layer includes a polymer network and a cholesteric liquid crystal with a right-handed spiral structure, the cholesteric liquid crystal with the left-handed spiral structure can reflect left-handed polarized light, and the cholesteric liquid crystal with the right-handed spiral structure can reflect right-handed polarized light.
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公开(公告)号：US20200041701A1
公开(公告)日：2020-02-06
申请号：US16499035
申请日：2018-10-10
Applicant: South China Normal University , Shenzhen Guohua Optoelectronics Co., Ltd. , Academy of Shenzhen Guohua Optoelectronics
Inventor： Guofu ZHOU , Xiaowen HU , Wei ZHAO , Haitao SUN , Qiumei NIE
Abstract: A dye-doped laser protective film is disclosed, comprising a polymer layer A and a polymer layer B. The polymer molecules in the polymer layer A are arranged in a left-handed helical structure which can reflect a left-handed polarized laser. The polymer molecules in the polymer layer B are arranged in a right-handed helical structure which can reflect a right-handed polarized laser. The combination of the polymer layer having the left-handed helical structure and the polymer layer having the right-handed helical structure can completely reflect circularly polarized light. In addition, the dye can absorb incident laser, so as to expand the protection angle of the laser protective film. The dye-doped laser protective film of the present disclosure has a simple manufacturing process, large protection angle and good flexibility, and can refit existing devices. Thus, the dye-doped laser protective film of the present disclosure has a good application prospect in many fields such as laser goggles, window films and the like.
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公开(公告)号：US10410592B2
公开(公告)日：2019-09-10
申请号：US15764228
申请日：2016-04-13
Applicant: Shenzhen Guohua Optoelectronics Co. Ltd , South China Normal University , Academy of Shenzhen Guohua Optoelectronics
Inventor： Zichuan Yi , Li Wang , Guofu Zhou
IPC: G09G3/34
Abstract: A driving method for reducing ghosting in an electrophoretic display is provided without prolonging driving waveform time and scintillation by improving a driving waveform design. The method comprises four steps: erasing an original image (S1); activating activity of electrophoretic particle (S2); activating electrophoretic particle (S3); and writing a new image (S4). At the electrophoretic particle activating (S3) stage, the electrophoretic particle activating is carried out for a preset duration time (tx), wherein the voltage of the driving waveform is 0V within the preset duration time (tx).
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公开(公告)号：US10263020B2
公开(公告)日：2019-04-16
申请号：US15311221
申请日：2014-12-23
Applicant: SOUTH CHINA NORMAL UNIVERSITY
Inventor： Kunyuan Xu
IPC: H01L27/13 , H01Q21/06 , H01L29/772 , H01L29/861 , H01L23/31 , H01L29/20 , H01L29/205 , H03L7/26 , H01L49/02 , B82Y20/00
Abstract: Provided is a planar nano-oscillator array having phase locking function, including two or more planar nano-oscillators which are arranged in parallel. The two oscillators are connected by planar resistors and capacitors, and a structure thereof includes: electrodes; respectively introducing two pairs of laterally arranged parallel insulation notch grooves into two-dimensional electron gas layers, so as to form oscillation channels; vertically disposing separating insulation notch grooves, so that a planar resistor A with low resistance which is connected to the electrode is formed on the left side, and a planar resistor B with low resistance which is connected to the electrode is formed on the right side; and arranging, between the two oscillators, an insulation capacitor notch groove which is parallel to the oscillation channels, insulating materials having a high dielectric constant being filled therein.
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