| 摘要 |
A wide-angle lens (1) comprises: a first lens (2) placed on an object side; and a lens group (3) arranged closer to an image plane than the first lens (2). The first lens (2) is a resin-made meniscus lens: which has a convex surface on the object side; which has negative power; at least one surface of which is aspherical; whose refractive index at d line is equal to or greater than 1.58; whose Abbe number is equal to or less than 35; and on the convex surface on the object side of which is formed a hard coat layer (4). The lens group (3) comprises a plurality of lenses (a second lens (5), a third lens (6), and a fourth lens (8)) which have positive power in total. This provides a wide-angle lens that has a wide angle of view, is inexpensive, and is scratch proof.
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