公开(公告)号：US11150132B2

公开(公告)日：2021-10-19

申请号：US16872856

申请日：2020-05-12

Applicant: Zolix Instruments Co., Ltd.

Inventor： Hongtai Cai ,  Haixia Chen

IPC: G01J3/18 ,  G01J3/02 ,  G01J3/06

Abstract: The present disclosure provides a grating rotation method and apparatus for improving spectrograph wavelength accuracy. The grating rotation method comprises: acquiring a start wavelength and an end wavelength of a scanning range; determining a start angle and an end angle of a grating rotation according to preset grating rotation angle series values, the start wavelength and the end wavelength, wherein a wavelength corresponding to the start angle is smaller than the start wavelength, and a wavelength corresponding to the end angle is larger than the end wavelength; and rotating the grating according to the start angle and the end angle to obtain required spectral information. According to the grating rotation scheme provided by the present disclosure, the problem that the obtained spectral accuracy is inconsistent due to different grating rotation angles can be avoided.

公开(公告)号：US20210199502A1

公开(公告)日：2021-07-01

申请号：US16872856

申请日：2020-05-12

Applicant: Zolix Instruments Co., Ltd.

Inventor： Hongtai Cai ,  Haixia Chen

IPC: G01J3/18 ,  G01J3/02 ,  G01J3/06

Abstract: The present disclosure provides a grating rotation method and apparatus for improving spectrograph wavelength accuracy. The grating rotation method comprises: acquiring a start wavelength and an end wavelength of a scanning range; determining a start angle and an end angle of a grating rotation according to preset grating rotation angle series values, the start wavelength and the end wavelength, wherein a wavelength corresponding to the start angle is smaller than the start wavelength, and a wavelength corresponding to the end angle is larger than the end wavelength; and rotating the grating according to the start angle and the end angle to obtain required spectral information. According to the grating rotation scheme provided by the present disclosure, the problem that the obtained spectral accuracy is inconsistent due to different grating rotation angles can be avoided.