To obtain a wide-angle projection lens having high projection performance while securing a long back focus, and also, capable of using an inexpensive light reflection mirror as an optical path bending component, and whose manufacturing cost is reduced.

The projection lens is constituted by arraying a first group G1 having negative refractive power and a second group G2 having positive refractive power in order from an enlargement side, the projection lens is nearly telecentric on a reduction side. The first group G1 comprises at least seven lenses in order from the enlargement side, that is, an aspheric lens L1, a negative meniscus lens L2 with a convex surface facing the enlargement side, negative lenses L3 and L4 each with a concave surface facing the reduction side, a negative lens L5 with a concave surface facing the reduction side, a biconvex lens L6 and a negative lens L7with a concave surface facing the enlargement side (three-cemented lens composed of lenses L5, L6 and L7). Further, the projection lens satisfies three conditional expressions (1) to (3).