| 摘要 |
It is an object of this invention to provide a zoom lens capable of projecting an original projection image displayed by a liquid crystal display element onto a screen surface with high optical performance, and an image projection apparatus using the zoom lens. A zoom lens includes a first lens unit having negative refractive power, a second lens unit having positive refractive power, a stop, a third lens unit having negative refractive power, a fourth lens unit having negative refractive power, and a fifth lens unit having positive refractive power, which are sequentially arranged from the enlargement side and having one or a plurality of lenses. When the magnification is to be changed from the wide angle end to the telephoto end, the second, third, and fourth lens units and the stop move.
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