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:
Aug. 09, 2016
Filed:
Jun. 19, 2015
Konica Minolta, Inc., Chiyoda-ku, JP;
Keiko Yamada, Sakai, JP;
Konica Minolta, Inc., Tokyo, JP;
Abstract
An imaging optical system includes first to third lens groups, and performs focusing by moving the second lens group, to satisfy the following conditional expressions:0.8<1_<1.2,0.6<|2_|<2.5,0.6<3_<1.80.8<1__/1_<1.1, and−0.6<2__/2_<1.6where FL, 1Gr_Fl, 2Gr_Fl, and 3Gr_Fl represent focal lengths of the entire system, and the first to third lens groups, respectively, 1Gr_R_nop represents a distance from the outermost surface of the first lens group on the object side to a rear principal point of the first lens group, 1Gr_Thi represents a total length of the first lens group, 2Gr_R_nop represents a distance from the outermost surface of the second lens group on the object side to a rear principal point of the second lens group, and 2Gr_Thi represents a total length of the second lens group.