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:
Apr. 03, 2007
Filed:
May. 10, 2006
Ji-yong Zeng, Beijing, CN;
Guo-fan Jin, Beijing, CN;
Min-qiang Wang, Beijing, CN;
Ying-bai Yan, Beijing, CN;
Ji-Yong Zeng, Beijing, CN;
Guo-Fan Jin, Beijing, CN;
Min-Qiang Wang, Beijing, CN;
Ying-Bai Yan, Beijing, CN;
Hon Hai Precision Industry Co. Ltd, Taipei Hsien, TW;
Tsinghua University, Beijing, CN;
Abstract
A Fourier transform lens system includes: a first lens group having negative power and a second lens group having positive power disposed at one side of the first lens group with the first lens group and the second lens group being arranged on a common optical axis. The first lens group includes two negative meniscus lenses each having negative power, and each of the negative meniscus lenses has a concave lens surface facing toward a concave lens surface of the other negative meniscus lens. The second lens group includes a positive lens having a convex lens surface facing toward the first lens group. The Fourier transform lens system satisfies the following conditions: (1) 0.1<R/f<0.4; (2) −0.4<R/f<−0.1; and (3) 0.1<d/f<0.3. A holographic storage system using a Fourier transform lens system is also provided.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile