公开(公告)号：US20230280571A1

公开(公告)日：2023-09-07

申请号：US17908113

申请日：2022-03-18

Applicant: SOOCHOW UNIVERSITY

Inventor： Xinhua CHEN ,  Yueping LU ,  Zhicheng ZHAO ,  Qiao PAN ,  Weimin SHEN

IPC: G02B17/08 ,  G02B27/00 ,  G02B13/18

CPC classification number: G02B17/0812 ,  G02B27/0025 ,  G02B13/18

Abstract: The invention provides a wide-aperture spherical primary mirror off-axis afocal optical system, including a primary mirror, a secondary mirror and an aberration compensation mirror group. The primary mirror is a spherical reflector, the secondary mirror are higher-order aspherical reflectors. The primary mirror and the secondary mirror form an off-axis two-mirror system to compress the beam aperture. The aberration compensation mirror group is a coaxial reflective system that is used off-axis. The aberration compensation mirror group has focal power to produce compensation aberrations. The incident beam passes through and is reflected by the primary mirror and secondary mirror sequentially and enters the aberration compensation mirror group thereafter. A spherical reflector is used as the primary mirror, which significantly reduces the development and manufacture cost of the system, and an aberration compensation mirror group is used off-axis to correct residual aberration in the system, which effectively improves imaging quality of the system.

公开(公告)号：US20220244561A1

公开(公告)日：2022-08-04

申请号：US17623766

申请日：2020-05-06

Applicant: SOOCHOW UNIVERSITY

Inventor： Xinhua CHEN ,  Zhicheng ZHAO ,  Tuotuo YANG ,  Jiacheng ZHU ,  Weimin SHEN

IPC: G02B27/62

Abstract: A fast assembly method of an Offner spectral imaging optical system. The Offner spectral imaging optical system is a concentric or nearly concentric optical system, that is, its primary mirror (7), convex grating (5) and three-mirror (8) are all spherical, and respective centers of curvature coincide or basically coincide. Based on the self-collimation principle, the invention quickly determines the position of the center of curvature of the spherical mirror by observing the self-collimation image after the point light source is reflected by the spherical mirror. The assembly and adjustment method provided by the invention has the characteristics of fast assembly and adjustment speed, high precision, low requirements for assembly and adjustment environment and low required equipment cost, and can quickly and effectively complete the assembly and adjustment of the Offner spectral imaging optical system.