An objective lens (1) for an endoscope (24, 25) comprises an object-sidelens element (2) including a plane-convex rod lens (7) and an image-side lenselement (3) including a biconvex lens (13) arranged at the image-side end oftheobjective lens (1). The object-side lens element (2) includes a plane-convexfirstlens (5) and a biconcave second lens (6) which form a front lens (4) and arearranged in this order on the object side of the plane-convex rod lens (7)forming athird lens. As viewed from the object side, the image-side lens element (3)includes a biconvex fourth lens (9), a concave-plane fifth lens (10) and abiconcavesixth lens (12) which are arranged in this order on the object side of thebiconvexlens (13) that is arranged at the image-side end of the objective lens (1) andformsa seventh lens.
