19003363. VARIABLE MAGNIFICATION OPTICAL SYSTEM AND IMAGING APPARATUS (FUJIFILM Corporation)

VARIABLE MAGNIFICATION OPTICAL SYSTEM AND IMAGING APPARATUS

Organization Name

FUJIFILM Corporation

Inventor(s)

Masato Kondo of Saitama-shi JP

VARIABLE MAGNIFICATION OPTICAL SYSTEM AND IMAGING APPARATUS

This abstract first appeared for US patent application 19003363 titled 'VARIABLE MAGNIFICATION OPTICAL SYSTEM AND IMAGING APPARATUS

Original Abstract Submitted

A variable magnification optical system consists of, in order from an object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, an intermediate group consisting of two or more and five or fewer lens groups, and a final lens group having a refractive power. During changing magnification, a spacing between the first lens group and the second lens group changes, a spacing between the second lens group and the intermediate group changes, a spacing between the intermediate group and the final lens group changes, and all spacings between adjacent lens groups in the intermediate group change. The variable magnification optical system satisfies a predetermined conditional expression.