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:
Jun. 30, 2015
Filed:
Mar. 18, 2011
Xiaoxiong Qiu, Suzhou, CN;
Jean-pierre Lusinchi, Suzhou, CN;
Xiaoxiong Qiu, Suzhou, CN;
Jean-Pierre Lusinchi, Suzhou, CN;
AO ETHER CORPORATION, Taichung, TW;
Abstract
An optical module comprises: a first positive meniscus lens having a focal length Fand comprising a first convex optical surface facing an object side, and a second concave optical surface facing an image side; a second positive meniscus lens having a focal length Fand comprising a third concave optical surface facing the object side, and a fourth convex optical surface facing the image side. The four surfaces follow the curvature equation: Zi=CURViYi/(1+(1−(1+Ki)CURViYi))+(Ai)Yi+(Bi)Yi+(Ci)Yi+(Di)Yiwith Mi=1−(1+Ki)(CURVi)(Ri)where: i is the surface number, Ki is the conic constant of the i-th surface; CURVi is the curvature of the i-th surface at the optical axis; Ai, Bi, Ci, Di, are aspheric coefficients of the i-th surface; Ri is the effective radius of aperture of the i-th surface. The following relations are satisfied: 0.60<F/F<1.45, 2<sqrt(M/M)<7.