The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 28, 2018
Filed:
Jul. 21, 2016
Graduate School AT Shenzhen, Tsinghua University, Shenzhen, Guangdong, CN;
Qian Zhou, Guangdong, CN;
Jinchao Zhang, Guangdong, CN;
Xinghui Li, Guangdong, CN;
Kai Ni, Guangdong, CN;
Jinchao Pang, Guangdong, CN;
Haifei Hu, Guangdong, CN;
Hao Dong, Guangdong, CN;
Huanhuan Wang, Guangdong, CN;
Xiangwen Zhu, Guangdong, CN;
Lanlan Wang, Guangdong, CN;
Graduate School at Shenzhen, Tsinghua University, Shenzhen, Guangdong, CN;
Abstract
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)=<APPB>−<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.