Imaging lens
AssigneeFuji Photo Optical Co., Ltd.
InventorYoshikazu Shinohara
Life of this patent
Estimating the term…
Abstract
An imaging lens, is formed of, in order from the object side, a zoom section for focusing and zooming, and a master section for imaging and vibration control. The master section is formed of, in order from the object side, a front lens group, and a rear lens group. The front lens group is afocal so that collimated light enters the rear lens group. The rear lens group includes, in order from the object side, a lens subgroup which is movable normal to the optical axis of the imaging lens for vibration control, and a lens subgroup for macro-imaging adjustment and tracking adjustment, which is movable along the optical axis. Preferably, a fixed lens subgroup is positioned between the lens subgroup for vibration control and the lens subgroup for macro-imaging adjustment and tracking adjustment.
Claims4
An imaging lens, is formed of, in order from the object side, a zoom section, which performs both a focusing function and a zoom function, and a master section, which performs an imaging function;
- the master section is formed of, in order from the object side, a front lens group which is afocal, and a rear lens group which receives collimated light from the front lens group;
- the rear lens group includes, in order from the object side,
- a lens subgroup for vibration control which is movable in a direction normal to the optical axis of the imaging lens, and
- a lens subgroup for macro-imaging and tracking adjustment which is movable along the optical axis of the imaging lens for the purpose of the macro-imaging adjustment and tracking adjustment.
Dependencies are inferred from the claim text.