Zoom optical system, as well as device and camera equipped with the same

摘要

Fluid lens and two (22, 40), the invention provides a zoom optical system including a (20) positioned on the object side of the zoom optical system, a lens group that is fixed in the first optical power of the negative provide. Negative lens in the first (20) ensures that the beams are in the zoom optical system, but relatively narrow, additional elements, which, for the smaller ones diameter (22, 40), especially fluid lens allowing that this is but the optical quality of these it is that and is advantageous for their sensitivity to impact, such as temperature difference and gravity.