Wide-angle projection zoom lens and projection type display apparatus

A wide-angle projection zoom lens, which is telecentric on a reduction side, comprising, in order from a magnification side:

• a first lens group having a negative refractive power;
• a second lens group having a positive refractive power;
• a third lens group having a negative refractive power;
• a fourth lens group having a positive refractive power;
• and
• a fifth lens group having a positive refractive power,
• wherein during zooming from a wide-angle end to a telephoto end, the first lens group and the fifth lens group remain stationary, and the second lens group, the third lens group, and the fourth lens group are movable in a direction of an optical axis so as to narrow a space between the first lens group and the second lens group and widen a space between the fourth lens group and the fifth lens group, and
• wherein the first lens group includes five lenses having negative, negative, negative, positive, negative refractive powers in order from the magnification side, and
• in the first lens group, the negative lens closest to the magnification side and the negative lens closest to the reduction side are formed as aspheric lenses made of plastic.