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:
Mar. 13, 2018
Filed:
Sep. 03, 2014
Han's Laser Technology Industry Group Co., Ltd., Shenzhen, CN;
HAN'S LASER TECHNOLOGY INDUSTRY GROUP CO., LTD., Shenzhen, CN;
Abstract
A photographic objective lens includes a first lens (L), a second lens (L), a third lens (L), a fourth lens (L), a fifth lens (L), a sixth lens (L), and a seventh lens (L), which are sequentially coaxially arranged along a propagation direction of incident light, wherein the first lens (L) is a negative meniscus lens; the second lens (L) is a drum lens; the third lens (L) is a negative meniscus lens; the fourth lens (L) is a drum lens; the fifth lens (L) is a biconcave lens; the sixth lens (L) is a positive meniscus lens; the seventh lens (L) is a biconvex lens; the two curved surfaces of each lens are the light incidence surface and the light outgoing surface of the lens, respectively.