Abstract: An imaging lens substantially includes six lenses, constituted by: a first lens having a positive refractive power and a convex surface that faces an object side; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens having a positive refractive power; a fifth lens having a negative refractive power and a concave surface that faces the object side; and an aspherical sixth lens having a negative refractive power, the surface of which is concave toward an image side in the vicinity of an optical axis and convex toward the image side at the peripheral portion thereof. The imaging lens satisfies a predetermined conditional formula.

Abstract: An imaging lens substantially includes six lenses, constituted by: a first lens having a negative refractive power, which is of a meniscus shape having a concave surface toward an image side; a second lens; a third lens; a fourth lens; a fifth lens having a positive refractive power; and a sixth lens having a negative refractive power, a concave surface toward the image side, and at least one inflection point in the surface toward the image side; provided in this order from an object side. The imaging lens satisfies a predetermined conditional formula.

Abstract: An imaging lens substantially includes seven lenses, constituted by: a first lens having a positive refractive power and a convex surface toward an image side; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens; a fifth lens having a positive refractive power; a sixth lens; and a seventh lens having a negative refractive power, a concave surface toward an image side, and at least one inflection point in the surface toward the image side; provided in this order from an object side. All of the first lens through the seventh lens are single lenses.

Abstract: An imaging device with a short length and small aberration is provided. A total length D of an image-forming optical system is less than 3.6 mm. A maximum incidence angle of a principle ray on an image forming plane exceeds 33°. Conditions f/fL<?1.50 or f/fL<?0.9, and D/f<1.10 are satisfied where f denotes a focal length of the entire image-forming optical system and fL denotes a focal length of a last lens.

Abstract: The distance along the optical axis from the surface of a first lens toward the object side to an image formation plane is 10 mm or less in an imaging lens. The imaging lens is constituted by: the first lens having a positive refractive power and a convex surface toward an object side; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power; and a sixth lens having a surface toward an image side which is concave in the vicinity of an optical axis and convex at the peripheral portions thereof. An aperture stop is provided more toward the object side than the surface of the third lens toward the image side.

Abstract: An imaging lens substantially consists of five lenses of a first lens having positive-power and a meniscus shape with its convex surface facing an object side, and at least one of the surfaces of which is aspherical, a second lens having negative-power and a concave surface facing an image side, and at least one of the surfaces of which is aspherical, a third lens having negative-power and a convex surface facing the object side, and at least one of the surfaces of which is aspherical, a fourth lens having positive-power and a convex surface facing the object side, and at least one of the surfaces of which is aspherical, and a fifth lens having negative-power and a concave surface facing the image side, and at least one of the surfaces of which is aspherical, which are in this order from the object side. A predetermined formula is satisfied.

Abstract: An image capturing lens which substantially consists of five lenses, composed of a first aspherical lens having a convex surface on the object side and a positive refractive power; a second aspherical lens having a concave surface on the image side and a negative refractive power; a third aspherical lens having a positive refractive power near the optical axis; a fourth aspherical lens having a negative refractive power; and a fifth aspherical lens which is a meniscus lens having a concave surface on the image side and a negative refractive power, arranged in this order from the object side, and satisfies predetermined conditional expressions.

Abstract: An image capturing lens which substantially consists of five lenses, composed of a first aspherical lens having a convex surface on the object side and a positive refractive power; a second aspherical lens having a concave surface on the image side and a negative refractive power; a third aspherical lens having a positive refractive power near the optical axis; a fourth aspherical lens having a negative refractive power; and a fifth aspherical lens which is a meniscus lens having a concave surface on the image side and a negative refractive power, arranged in this order from the object side, and satisfies predetermined conditional expressions.

Abstract: An imaging lens substantially includes six lenses, constituted by: a first lens having a positive refractive power and a convex surface that faces an object side; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens having a positive refractive power; a fifth lens having a negative refractive power and a concave surface that faces the object side; and an aspherical sixth lens having a negative refractive power, the surface of which is concave toward an image side in the vicinity of an optical axis and convex toward the image side at the peripheral portion thereof. The imaging lens satisfies a predetermined conditional formula.

Abstract: An imaging lens substantially consists of five lenses of an aspheric first lens having a convex surface facing an object side and positive refractive power, an aspheric second lens having a concave surface facing the object side and negative refractive power, an aspheric third lens having a meniscus shape in which its object-side surface is convex toward the object side, and positive refractive power, an aspheric fourth lens having negative refractive power and a fifth lens having a convex surface facing the object side and positive refractive power, which are in this order from the object side. Further, the imaging lens satisfies predetermined conditional formulas.

Abstract: An imaging lens substantially consisting of six lenses, composed of a first lens having a positive refractive power and a convex surface on the object side, a second lens having a negative refractive power and a concave surface on the image side, a third lens having a positive refractive power and a convex surface on the object side, a fourth lens having a positive refractive power, a fifth lens having a negative refractive power and a concave surface on the image side, and a sixth lens having a negative refractive power with the image side surface having an aspherical shape which is concave on the image side near the optical axis and convex in a peripheral region.

Abstract: An imaging lens substantially consists of five lenses of an aspheric first lens having a convex surface facing an object side and positive refractive power, an aspheric second lens having a concave surface facing the object side and negative refractive power, an aspheric third lens having a meniscus shape in which its object-side surface is convex toward the object side, and positive refractive power, an aspheric fourth lens having negative refractive power and a fifth lens having a convex surface facing the object side and positive refractive power, which are in this order from the object side. Further, the imaging lens satisfies predetermined conditional formulas.

Abstract: An imaging lens substantially consists of five lenses of a first lens having positive-power and a meniscus shape with its convex surface facing an object side, and at least one of the surfaces of which is aspherical, a second lens having negative-power and a concave surface facing an image side, and at least one of the surfaces of which is aspherical, a third lens having negative-power and a convex surface facing the object side, and at least one of the surfaces of which is aspherical, a fourth lens having positive-power and a convex surface facing the object side, and at least one of the surfaces of which is aspherical, and a fifth lens having negative-power and a concave surface facing the image side, and at least one of the surfaces of which is aspherical, which are in this order from the object side. A predetermined formula is satisfied.

Abstract: An imaging lens substantially consisting of six lenses, composed of a first lens having a positive refractive power and a convex surface on the object side, a second lens having a negative refractive power and a concave surface on the image side, a third lens having a positive refractive power and a convex surface on the object side, a fourth lens having a positive refractive power, a fifth lens having a negative refractive power and a concave surface on the image side, and a sixth lens having a negative refractive power with the image side surface having an aspherical shape which is concave on the image side near the optical axis and convex in a peripheral region.

Abstract: An image capturing lens which substantially consists of five lenses, composed of a first aspherical lens having a convex surface on the object side and a positive refractive power; a second aspherical lens having a concave surface on the image side and a negative refractive power; a third aspherical lens having a positive refractive power near the optical axis; a fourth aspherical lens having a negative refractive power; and a fifth aspherical lens which is a meniscus lens having a concave surface on the image side and a negative refractive power, arranged in this order from the object side, and satisfies predetermined conditional expressions.

Abstract: An imaging lens is provided and includes: in order from the object side, a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a concave surface on the image side near the optical axis and having a positive refractive power; a fourth lens having a positive refractive power near the optical axis; and a fifth lens having a negative refractive power near the optical axis. An image side surface of the fifth lens is concave near the optical axis and has a region where a negative power of the region decreases toward a periphery of the fifth lens as compared with a negative power near the optical axis.

Abstract: An imaging lens is provided and includes: in order from the object side, a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a convex surface on the image side near the optical axis and having a positive refractive power; a fourth lens having a positive refractive power near the optical axis; and a fifth lens having a negative refractive power near the optical axis. An image side surface of the fifth lens is concave near the optical axis and has a region where a negative power of the region decreases toward a periphery of the fifth lens as compared with a negative power near the optical axis.

Abstract: A filter, to be disposed concentrically with an optical axis of an imaging lens, capable of accurately controlling light transmission variation characteristics and effectively providing an apodization effect or a peripheral light intensity correction effect. The filter includes opaque dots disposed according to a honeycomb arrangement from a central portion toward a peripheral portion so as to have, at least partially, a Gaussian distribution like dot density and is structured to satisfy Condition Expression (1) given below when a size of the dots is taken as d. 0.003 mm?d?0.010 mm??(1).

Abstract: An imaging lens is provided and includes: in order from the object side, a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a concave surface on the image side near the optical axis and having a positive refractive power; a fourth lens having a positive refractive power near the optical axis; and a fifth lens having a negative refractive power near the optical axis. An image side surface of the fifth lens is concave near the optical axis and has a region where a negative power of the region decreases toward a periphery of the fifth lens as compared with a negative power near the optical axis.

Abstract: A compact photographic lens for a digital camera is disclosed. The photographic lens has only two lens elements, yet provides excellent imaging even at the periphery of the image field. The photographic lens of the invention and an image sensor, together, fit within a volume of about 10 cm3. The lens is formed of, in order from the object side, a biconvex lens element having two aspherical surfaces, and a negative meniscus lens element having two aspherical surfaces. The convex surface of the meniscus lens element is positioned on the image side, and various conditions are satisfied in order to provide the photographic lens with a short overall length while favorably correcting various aberrations.