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:
Feb. 18, 2014
Filed:
Jun. 15, 2009
Makoto Jin, Sakai, JP;
Keiji Matsusaka, Osaka, JP;
Toru Nakatani, Uda, JP;
Konica Minolta Opto, Inc., Tokyo, JP;
Abstract
The present invention provides a wide-angle optical system constituted of, in order from the object side to the image side, front group, stop, and rear group. The front groupis constituted, in order from the object side to the image side, of first lenshaving negative optical power, second lenshaving negative optical power, and third lenshaving positive optical power. The rear groupis constituted, in order from the object side to the image side, of fourth lenshaving positive optical power, and fifth lenshaving negative optical power. The opposite surface from the stop of each of the paired lensesandarranged at the both sides of the stopis a convex surface.