VARIABLE MAGNIFICATION OPTICAL SYSTEM, OPTICAL APPARATUS, AND METHOD FOR MANUFACTURING VARIABLE MAGNIFICATION OPTICAL SYSTEM

WIPO Patent Application WO/2022/259649

A1

This variable magnification optical system has a plurality of lens groups, i.e., six or more lens groups. The plurality of lens groups include a first lens group having a positive refractive power, and back groups disposed closer to an image than the first lens group. When the magnification is to be changed, the intervals among the lens groups are changed. The first lens group is composed of not more than two lenses, and is configured to satisfy the following conditional formulae.　8.00