Zoom Lens

摘要

A zoom lens comprises a first lens unit G1 having a positive refractive power, a second lens unit G2 having a negative refractive power, a third lens unit G3 having a positive refractive power, a fourth lens unit G4 having a negative refractive power, a fifth lens unit G5, and a sixth lens unit G6 having a positive refractive power. Zooming from a wide angle end to a telephoto end is carried out by changing a distance between the lens units, and a distance between the first lens unit G1 and the third lens unit G3 narrows at the telephoto end than at the wide angle end, and the first lens unit G1 is stationary at the time of zooming from the wide angle end to the telephoto end, and lens units from the second lens unit G2 to the fifth lens unit G5 move.

主权项

1. A zoom lens comprising in order from an object side to an image side:
a first lens unit having a positive refractive power; a second lens unit having a negative refractive power; a third lens unit having a positive refractive power; a fourth lens unit having a negative refractive power; a fifth lens unit which includes a lens; and a sixth lens unit having a positive refractive power, wherein a distance between the first lens unit and the second lens unit widens at a telephoto end than at a wide angle end, and a distance between the second lens unit and the third lens unit narrows at the telephoto end than at the wide angle end, and a distance between the third lens unit and the fourth lens unit changes at the time of zooming from the wide angle end to the telephoto end, and a distance between the fourth lens unit and the fifth lens unit changes at the time of zooming from the wide angle end to the telephoto end, and a distance between the fifth lens unit and the sixth lens unit changes at the time of zooming from the wide angle end to the telephoto end, the fourth lens unit and the fifth lens unit move at the time of zooming from the wide angle end to the telephoto end.