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. 25, 2015
Filed:
Jan. 23, 2013
Atsuo Masui, Sakai, JP;
Atsuo Masui, Sakai, JP;
KONICA MINOLTA ADVANCED LAYERS, INC., Tokyo, JP;
Abstract
A projection lens system is constructed as a zoom lens system which is for use with a laser light source and performs magnification variation by moving at least a lens group along the optical axis, and the projection lens system fulfills the following conditional formula: (|AC(B−G)|+|AC(R−G)|)/(|AC(B−G)|+|AC(R−G)|)<0.8, where AC(B−G) represents longitudinal chromatic aberration between the wavelengths λBand λG; AC(R−G) represents longitudinal chromatic aberration between the wavelengths λRand λG; AC(B−G) represents longitudinal chromatic aberration between the wavelengths λBand λG; and AC(R−G) represents longitudinal chromatic aberration between the wavelengths λRand λG.