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:
Jan. 23, 2018
Filed:
Jan. 08, 2016
General Electric Company, Schenectady, NY (US);
Zhangyi Zhong, South San Francisco, CA (US);
Kevin George Harding, Niskayuna, NY (US);
Daniel Curtis Gray, Cumberland, ME (US);
Yi Liao, Niskayuna, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
A lens system includes a tube lens and a lens assembly, with the tube lens disposed between an optical sensor and the lens assembly. The lens assembly is disposed between the tube lens and an imaged object. In order to solve the problem of some lens systems having focal lengths that are shorter than the working distances of the lens systems, one aspect of the inventive subject matter described herein provides the lens assembly with a negative lens and plural positive lenses. A first positive lens is located between a second positive lens and an imaging plane, the second positive lens is located between the first positive lens and the negative lens, and the negative lens is located between the second positive lens and the tube lens.