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1.发明授权公开(公告)号：US11874475B2
公开(公告)日：2024-01-16
申请号：US17993362
申请日：2022-11-23
Applicant: ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
Inventor： Guoyong Ye , Yalin Zhang , Tao Yuan , Shaobo Jin , Tong Wang , Xuling Liu , Hui Wang
CPC classification number: G02B27/0938 , G01B11/02 , G02B27/0916 , G02B27/1026
Abstract: A vortex beam-excited precision grating displacement measurement apparatus, which performs displacement measurement by taking a vortex beam carrying topological charges as an excitation light source of a grating and by using the interference of a ±m-order diffracted vortex beam. In the vortex beam-excited precision grating displacement measurement method and apparatus, the displacement p/m of the measured displacement corresponds to the rotation of a circle 2π rad of an interference petal pattern, and then the rotation of 1° of the interference petal pattern corresponds to the measured displacement amount of p/360m. Compared with a conventional grating measurement method, the present disclosure provides a grating interference sensing signal that realizes a higher optical subdivision rate itself.
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公开(公告)号：US20240217033A1
公开(公告)日：2024-07-04
申请号：US18137434
申请日：2023-04-21
Inventor： Guoyong Ye , Zhendong Liu , Shaobo Jin , Haifeng Xiao , Xiaoyu Wen , Xuling Liu , Yalin Zhang
IPC: B23K26/361 , B23K26/0622 , B23K26/08 , B23K26/70 , B23K37/04
CPC classification number: B23K26/361 , B23K26/0624 , B23K26/083 , B23K26/705 , B23K37/0408 , B23K2103/04
Abstract: An ultra-long steel strip grating manufacturing system using femtosecond laser with spatiotemporal parameters cooperative control, the manufacturing system comprising an unwinding roller, a traction roller and a winding roller, a linear femtosecond laser unit and an electronic shutter being disposed between the unwinding roller and the traction roller and directly above the electronic shutter, a cleaning unit being disposed between the traction roller and the winding roller, a first inspection unit being disposed between the cleaning unit and the winding roller, a second inspection unit being disposed directly above the winding roller, and a plurality of auxiliary roller systems which are driven rollers being disposed along a conveying direction of the steel strip, which achieves a horizontal movement of the steel strip under the electronic shutter, and also achieves a smooth entry of the steel strip into the cleaning unit for cleaning.
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3.发明公开公开(公告)号：US20230359049A1
公开(公告)日：2023-11-09
申请号：US17993362
申请日：2022-11-23
Applicant: ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
Inventor： Guoyong YE , Yalin Zhang , Tao Yuan , Shaobo Jin , Tong Wang , Xuling Liu , Hui Wang
CPC classification number: G02B27/0938 , G01B11/02 , G02B27/0916 , G02B27/1026
Abstract: A vortex beam-excited precision grating displacement measurement apparatus, which performs displacement measurement by taking a vortex beam carrying topological charges as an excitation light source of a grating and by using the interference of a ±m-order diffracted vortex beam. In the vortex beam-excited precision grating displacement measurement method and apparatus, the displacement p/m of the measured displacement corresponds to the rotation of a circle 2π rad of an interference petal pattern, and then the rotation of 1° of the interference petal pattern corresponds to the measured displacement amount of p/360m. Compared with a conventional grating measurement method, the present disclosure provides a grating interference sensing signal that realizes a higher optical subdivision rate itself.
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