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. 28, 2015
Filed:
Feb. 21, 2014
Ether Precision, Inc., Grand Cayman, KY;
Jianhua Wang, Suzhou, CN;
Xiaoxiong Qiu, Suzhou, CN;
Jean-Pierre Lusinchi, Suzhou, CN;
Wanghu Wu, Suzhou, CN;
Ether Precision Inc., Grand Cayman, KY;
Abstract
An optical module having an object side and an image side; the module comprising, from the object side to the image side: a first positive meniscus lens having a convergence C1, made of a material having a refractive index Nd1 and an Abbe number Vd1, a second negative meniscus lens having a convergence C2 made of a material having a refractive index Nd2 and an Abbe number Vd2, a third positive meniscus lens having a convergence C3, made of a material having a refractive index Nd3 and an Abbe number Vd3, a fourth negative lens having a convergence C4, made of a material having a refractive index Nd4 and an Abbe number Vd4, wherein: 1.1<C1/C<1.35 II C1/C2 II>2 0.5<C1/C3<1.1 C1/Vd1<<5.2 II C2/Vd2 II<7 IIå(Ci/Vdi)II<4 with i=1 to 4.