Hamre, Schumann, Mueller & Larson, P.C.
Optimized design method for manufacturing fresnel grating
An optimized design method for manufacturing a Fresnel grating is disclosed, including the following steps: (1) making a Fresnel surface type of the Fresnel grating equivalent to a curved surface type, and determining, based on the curved surface type to which the Fresnel surface type is equivalent, an optical path difference function of the Fresnel grating: Φ (λ)=<AP1P2B>−<AOB>+Nmλ; and (2) determining a Fresnel grating parameter that minimizes a function value of the optical path difference function, so as to manufacture a Fresnel grating that has an aberration elimination effect. The manufactured Fresnel grating may effectively eliminate a portion of aberrations of the Fresnel grating, and increase a resolution of a spectrometer.
Graduate School at Shenzhen, Tsinghua University
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Xinghui Jinchao Huanhuan Lanlan Haifei Xiangwen Qian Hao Jinchao Kai
Li Zhang Wang Wang Hu Zhu Zhou Dong Pang Ni