Abstract: From an object plane to an image plane along an optical axis, a camera lens including a first lens, a diffractive optical element and a lens module is provided in various embodiments. The first lens has a positive focal power. The diffractive optical element has a positive focal power and a negative dispersion property. A surface that is of the diffractive optical element or the first lens and that faces the object plane side is a convex surface at the optical axis, a surface that is of the diffractive optical element or the first lens and that faces the image plane side is a concave surface at the optical axis. The lens module includes N lenses. At least one of a surface facing the object plane side and a surface facing the image plane side that are of each of the N lenses is an aspheric surface.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens having positive refractive power; and a sixth lens, arranged in this order from an object side to an image plane side. The second lens is formed in a shape so that a surface thereof on the object side is convex near an optical axis thereof. The fourth lens is formed in a shape so that a surface thereof on the image plane side is convex near an optical axis thereof. The fifth lens is formed in a shape so that a surface thereof on the object side is convex near an optical axis thereof. The sixth lens is formed in a shape so that a surface thereof on the image plane side is concave toward the image plane side near an optical axis thereof.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens having positive refractive power; and a sixth lens having negative refractive power, arranged from an object side to an image plane side. The fourth lens is formed in a shape so that a surface on the object side is concave and a surface on the image plane side is convex near an optical axis. The fifth lens is formed in a shape so that surfaces on the object side and the image plane side are convex near an optical axis. The sixth lens is formed in a shape so that surfaces on the object side and the image plane side are concave near an optical axis. The fifth lens and the sixth lens have specific focal lengths, and the fourth lens has a specific Abbe's number.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens having positive refractive power; and a sixth lens having negative refractive power, arranged in this order from an object side to an image plane side. The first lens is formed in a shape so that surfaces on the object side and the image plane side are convex near an optical axis. The second lens is formed in a meniscus shape near an optical axis. The fifth lens is formed in a shape so that surfaces on the object side and the image plane side are convex near an optical axis. The sixth lens is formed in a shape so that surfaces on the object side and the image plane side are concave near an optical axis. The first lens has a specific Abbe's number.

Abstract: An imaging lens includes a stop; a first lens; a second lens; a third lens having positive refractive power; a fourth lens; a fifth lens having positive refractive power; and a sixth lens, arranged in this order from an object side to an image plane side. The fourth lens is formed in a shape so that a surface thereof on the image plane side is convex near an optical axis thereof. The sixth lens is formed in a shape so that a surface thereof on the image plane side is concave near an optical axis thereof. The second lens is formed in a shape so that a surface thereof on the object side and a surface thereof on the image plane side have specific curvature radii.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens having positive refractive power; and a sixth lens having negative refractive power, arranged from an object side to an image plane side. The fourth lens is formed in a shape so that a surface on the object side is concave and a surface on the image plane side is convex near an optical axis. The fifth lens is formed in a shape so that surfaces on the object side and the image plane side are convex near an optical axis. The sixth lens is formed in a shape so that surfaces on the object side and the image plane side are concave near an optical axis. The fifth lens and the sixth lens have specific focal lengths, and the fourth lens has a specific Abbe's number.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens having positive refractive power; and a sixth lens having negative refractive power, arranged in this order from an object side to an image plane side. The first lens is formed in a shape so that surfaces on the object side and the image plane side are convex near an optical axis. The second lens is formed in a meniscus shape near an optical axis. The fifth lens is formed in a shape so that surfaces on the object side and the image plane side are convex near an optical axis. The sixth lens is formed in a shape so that surfaces on the object side and the image plane side are concave near an optical axis. The first lens has a specific Abbe's number.

Abstract: An imaging lens includes a stop; a first lens; a second lens; a third lens having positive refractive power; a fourth lens; a fifth lens having positive refractive power; and a sixth lens, arranged in this order from an object side to an image plane side. The fourth lens is formed in a shape so that a surface thereof on the image plane side is convex near an optical axis thereof. The sixth lens is formed in a shape so that a surface thereof on the image plane side is concave near an optical axis thereof. The second lens is formed in a shape so that a surface thereof on the object side and a surface thereof on the image plane side have specific curvature radii.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens having positive refractive power; and a sixth lens, arranged in this order from an object side to an image plane side. The second lens is formed in a shape so that a surface thereof on the object side is convex near an optical axis thereof. The fourth lens is formed in a shape so that a surface thereof on the image plane side is convex near an optical axis thereof. The fifth lens is formed in a shape so that a surface thereof on the object side is convex near an optical axis thereof. The sixth lens is formed in a shape so that a surface thereof on the image plane side is concave toward the image plane side near an optical axis thereof.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side. The second lens is formed in a meniscus shape. The fourth lens is formed in a shape so that a surface thereof on the image plane side is convex toward the image plane side. The fifth lens is formed in a shape so that a surface thereof on the object side is convex toward the object side, and a surface thereof on the image plane side is convex toward the image plane side. The sixth lens is formed in a shape so that a surface thereof on the image plane side is concave toward the image plane side.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side. The fourth lens is formed in a shape so that a surface thereof on the image plane side is convex on an optical axis thereof. The sixth lens is formed in a shape so that a surface thereof on the image plane side is concave toward the image plane side near an optical axis thereof. The fifth lens has a specific Abbe's number and the third lens has a specific focal length.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side. The second lens is formed in a shape so that an entire surface thereof on the object side is convex. The fifth lens is formed in a shape so that a surface thereof on the object side is convex toward the object side near an optical axis thereof, and a surface thereof on the image plane side is convex toward the image plane side near the optical axis thereof. The fourth lens has a specific Abbe's number.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side. The fourth lens is formed in a shape so that a surface thereof on the image plane side is convex on an optical axis thereof. The sixth lens is formed in a shape so that a surface thereof on the image plane side is concave toward the image plane side near an optical axis thereof. The fifth lens has a specific Abbe's number and the third lens has a specific focal length.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side. The second lens is formed in a shape so that an entire surface thereof on the object side is convex. The fifth lens is formed in a shape so that a surface thereof on the object side is convex toward the object side near an optical axis thereof, and a surface thereof on the image plane side is convex toward the image plane side near the optical axis thereof. The fourth lens has a specific Abbe's number.

Abstract: An image pickup lens includes a first lens with positive refractive power having a convex object side surface, an aperture stop, a second lens with negative refractive power having a convex image side surface, a third lens with positive refractive power having a concave image side surface, a fourth lens with positive refractive power having a convex image side surface, and a fifth lens with negative refractive power as a double-sided aspheric lens having a concave image side surface near the optical axis; wherein the first lens and the second lens satisfy following conditional expressions (1) and (2); 50<?1<85??(1) 20<?2<35??(2) where ?1 represents an Abbe number of the first lens, and ?2 represents an Abbe number of the second lens, and where the second lens satisfies a following conditional expression (3); 1.55<Nd2<1.70??(3) where Nd2 represents a refractive index of d-ray of the second lens.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens having negative refractive power, arranged from an object side to an image plane side. The first lens has an object-side surface and an image plane-side surface having positive curvature radii. The third lens has an object-side surface and an image plane-side surface having positive curvature radii. The fourth lens has an object-side surface and an image plane-side surface having negative curvature radii. The sixth lens is formed so that at least one of an object-side surface and an image plane-side surface is an aspherical surface and has at least one inflexion point. The first lens and the second lens have a specific composite focal length.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens; a fourth lens having negative refractive power; a fifth lens having positive refractive power; and a sixth lens, arranged in this order from an object side to an image plane side. The first lens is formed so that a surface thereof on the object side has a positive curvature radius. The sixth lens is formed so that a surface thereof on the object side and a surface thereof on the image plane side have positive curvature radii. Each of the first to sixth lenses has an Abbe's number within a specific range.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens; a fourth lens having negative refractive power; a fifth lens having positive refractive power; and a sixth lens, arranged in this order from an object side to an image plane side. The first lens is formed so that a surface thereof on the object side has a positive curvature radius. The sixth lens is formed so that a surface thereof on the object side and a surface thereof on the image plane side have positive curvature radii. Each of the first to sixth lenses has an Abbe's number within a specific range.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens having negative refractive power, arranged from an object side to an image plane side. The first lens has an object-side surface and an image plane-side surface having positive curvature radii. The third lens has an object-side surface and an image plane-side surface having positive curvature radii. The fourth lens has an object-side surface and an image plane-side surface having negative curvature radii. The sixth lens is formed so that at least one of an object-side surface and an image plane-side surface is an aspherical surface and has at least one inflexion point. The first lens and the second lens have a specific composite focal length.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens having negative refractive power; and a sixth lens. The first lens is formed in a shape so that a surface thereof on the object side and a surface thereof on the image plane side have positive curvature radii. The fifth lens is formed in a shape so that a surface thereof on the image plane side has a negative curvature radius. The sixth lens is formed in a shape so that a surface thereof on the image plane side has a positive curvature radius.