| 摘要 |
<p>This imaging lens comprises, arranged in order from the object to the image plane, a first lens having a positive power in which both lens surfaces are convex, an aperture diaphragm, a second lens which is a meniscus lens having a negative power in which the lens surface on the object side is convex, a third lens which is a meniscus lens having a positive power in which the lens surface on the object side is concave, and a fourth lens having a negative power in which both lens surfaces are concave. Through this configuration, an imaging lens can be achieved in which various aberrations are satisfactorily corrected, despite the lens being small-sized in the radial direction of the lens and thin in the optical axis direction.</p> |
