OPTICAL EQUIPMENT HAVING ZOOM LENS

摘要

PROBLEM TO BE SOLVED: To obtain optical equipment having a zoom lens capable of having high optical performance although the number of component lenses is decreased to five or less in order to greatly miniaturize the whole optical system while coping with an imaging device. SOLUTION: The optical equipment forms an image onto the imaging device having an effective image plane with a diagonal line 2Y by using a zoom lens which includes, in order of object side to image side, a 1st lens group having negative refractive power, a 2nd lens group having positive refractive power, and a 3rd lens group having positive refractive power, is composed of five or less lenses in total and zooms by changing intervals between the lens groups. In the zoom lens, the incident angle of the main rays of light among rays of light forming an image at the edge of the imaging device in a zoom position at a wide angle end, is 35°or less. The zoom lens satisfies conditional formula, 0.7