公开(公告)号：EP3093636A4

公开(公告)日：2017-11-29

申请号：EP15733176

申请日：2015-01-06

申请人： GRADUATE SCHOOL SHENZHEN TSINGHUA UNIV

发明人： MA HUI ,  CHANG JINTAO ,  ZENG NAN ,  HE YONGHONG ,  LIAO RAN ,  SUN SHUQING ,  HE HONGHUI ,  CHEN ZHENHUA

IPC分类号： G01J4/00

CPC分类号： G01J4/04

摘要： Disclosed are a light polarization state detection apparatus, a detection method and a light polarization state modulation method. The light polarization state detection apparatus comprises a lens with a variable birefringence feature as an optical phase modulator, a polarizer as a SOP analyzer, a plurality of common lenses and a CCD as imaging devices, and a data processing and displaying unit. The SOP detection apparatus uses special birefringence distribution of birefringence optical elements such as a GRIN lens to obtain the Stokes parameters of light to be measured by CCD in a single frame imaging, and can rapidly accurately measure the SOP. The SOP detection apparatus is simple in structure, lower in cost without containing any motion parts and electrical modulation devices, and is a fully static full Stokes parameters SOP detection apparatus. The light polarization state modulation apparatus comprises a GRIN lens with a variable birefringence feature. The modulation method is continuous in each position of a modulation aperture, rich in modulation variety and low in cost.

公开(公告)号：EP3112486A4

公开(公告)日：2017-11-15

申请号：EP15743006

申请日：2015-01-28

申请人： CHINA NUCLEAR POWER ENG COMPANY LTD ,  GRADUATE SCHOOL SHENZHEN TSINGHUA UNIV ,  CHINA GENERAL NUCLEAR POWER

发明人： SHU GUOGANG ,  LI QIULIN ,  LUO ZHIYUAN ,  LIU WEI ,  LIU YANZHANG ,  WANG XIN ,  LI XUEJUN ,  ZHANG TENGFEI

IPC分类号： C22C32/00 ,  B21B1/46 ,  C22C1/10 ,  C22C21/00

CPC分类号： B22D11/003 ,  B22D11/0622 ,  B22D11/0642 ,  B22D11/114 ,  B22D11/115 ,  B22D11/122 ,  B22D21/007 ,  B22F2202/01 ,  B22F2202/05 ,  C22C1/1036 ,  C22C21/00 ,  C22C32/0057 ,  G21F1/08

摘要： The present invention provides a method for producing B4C/Al neutron-absorbing material sheet by continuous cast rolling including the steps of: 1) providing B4C particles and aluminum matrix melt, adding the B4C particles into the aluminum matrix melt while stirring the composite of the B4C particles and the aluminum matrix melt; 2) applying an electromagnetic field to the B4C particle-containing aluminum matrix melt passing through a headbox; 3) applying an ultrasonic vibration to the B4C particle-containing aluminum matrix melt passing through a casting nozzle; and 4) conducing twin roll continuous cast rolling on the B4C particle-containing aluminum matrix melt from the casting nozzle to obtain B4C/Al neutron-absorbing material sheet. The method of the present invention uses twin roll continuous cast rolling under coupled ultrasonic and electromagnetic oscillation to rapidly cool and refine the grains of the solidified composite material and realize uniform distribution of B4C particles in the aluminum matrix.