Abstract: A camera lens group including a first to a fifth lens arranged sequentially from the object side to image side is provided. The first lens has a positive refractive power, and object-side surface thereof is a convex surface; the second lens has a negative refractive power, and image-side surface thereof is a concave surface; the third and the fourth lens each has a refractive power, and an object-side surface of the third lens is a convex surface; the fifth lens has a negative refractive power, and an image-side surface thereof is a concave surface; an effective focal length f of the camera lens group and half of a diagonal length ImgH of an effective pixel area on an image plane of the camera lens group satisfy: 3.5<f/ImgH<4.5; and an effective focal length f1 of the first lens and an entrance pupil diameter EPD of the camera lens group satisfy: 3<f1/EPD<4.5.

Abstract: The present disclosure discloses a lens module. The lens module includes a lens barrel, a lens, and a pressing ring abutted against the lens from an image side. The pressing ring includes an upper surface, a lower surface, an inner connecting surface connecting the upper surface and the lower surface, and an outer connecting surface opposite to the inner connecting surface, the outer connecting surface is abutted against the lens barrel. The lens includes an optical portion and a bearing portion. The bearing portion includes an image-side surface close to the image side. The lens module of the present disclosure can ensure the assembly precision of the pressing ring and improve the yield rate of the lens module.

Abstract: An imaging lens system comprises, in order from an object side to an image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with refractive power; a third lens element with refractive power having object-side and image-side surfaces being aspheric, at least one surface thereof having at least one inflection point; a fourth lens element with refractive power having a concave object-side surface and a convex image-side surface; a fifth lens element with refractive power having an aspheric object-side surface and an aspheric concave image-side surface, the image-side surface thereof having at least one inflection point.

Abstract: The present disclosure provides a lens module and an electronic device. The lens module includes a lens barrel, a first lens and a second lens accommodated in the lens barrel. The first lens includes a first optical portion and a first supporting portion wound around a periphery of the first optical portion, the second lens includes a second optical portion corresponding to the first optical portion and a second supporting portion wound around a periphery of the second optical portion. An image side of the first supporting portion is provided with a first inclined surface, and an object side of the second supporting portion is provided with a second inclined surface for adhering with the first inclined surface. The lens module of the present disclosure can improve the assembly precision of the first lens and the second lens, and thereby improving the imaging quality of the lens module.

Abstract: An imaging lens includes a first lens group and a second lens group, arranged in this order from an object side to an image plane side. The first lens group includes a first lens having negative refractive power, a second lens having negative refractive power, and a third lens. The second lens group includes a fourth lens and a fifth lens having negative refractive power. The first lens is formed in a shape so that a curvature radius of a surface thereof on the image plane side is positive. The fifth lens is formed in a shape so that a surface thereof on the image plane side is aspheric.

Abstract: A five-piece optical lens for capturing image and a five-piece optical module for capturing image, along the optical axis in order from an object side to an image side, include a first lens which can have positive refractive power, and has an object-side surface which can be convex; a second lens with refractive power; a third lens with refractive power; a fourth lens with refractive power; and a fifth lens which can have negative refractive power, wherein an image-side surface thereof can be concave, and at least one surface of the fifth lens has an inflection point; both surfaces of each of the five lenses are aspheric. The optical lens can increase aperture value and improve the imaging quality for use in compact cameras.

Abstract: An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. At least one lens among the first to the fifth lenses has positive refractive force. The fifth lens can have negative refractive force, wherein both surfaces thereof are aspheric, and at least one surface thereof has an inflection point. The lenses in the optical image capturing system which have refractive power include the first to the fifth lenses. The optical image capturing system can increase aperture value and improve the imaging quality for use in compact cameras.

Abstract: An optical lens includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens arranged sequentially along an optical axis from an magnified side to a minified side. A center thickness of the first lens is TH1, a center thickness of the second lens is TH2, a center thickness of the third lens is TH3, a center thickness of the fourth lens is TH4, a center thickness of the fifth lens is TH5, and an effective focal length of the optical lens is EFL, wherein the optical lens fits at least one of the following conditions: (1) 0.52<(TH1+TH2+TH3)/EFL<1.0; (2) 0.5<(TH3+TH4+TH5)/EFL<0.65; and (3) (TH1+TH2+TH3)/(TH3+TH4+TH5)>1.20. The optical lens can reduce aberration and has high resolution.

Abstract: This optical system includes: a device (106) for generating a plane light wave, called a collimated light wave (OLcol); and a device (114) for deviating the collimated light wave so as to provide a light wave, called a test light wave (OLtest), the deviating device (114) having an adjustable focal length.

Abstract: An imaging lens substantially consists of five lenses consisting of, in order from the object side: a first lens having a positive refractive power with a convex surface toward the object side; a second lens having a negative refractive power and having a meniscus shape with a convex surface toward the image side; a third lens having a positive refractive power and having a meniscus shape with a convex surface toward the image side; a fourth lens having a positive refractive power and having a meniscus shape with a convex surface toward the image side; and a fifth lens having a negative refractive power, wherein an image-side surface of the fifth lens includes a concave surface and at least one inflection point, wherein a predetermined conditional expression is satisfied.

Abstract: An optical imaging lens includes: a first, second, third, fourth and fifth lens element, the first lens element has an object-side surface with a convex part in a vicinity of the optical axis and a convex part in a vicinity of its periphery; the second lens element has an object-side surface with a convex part in a vicinity of its periphery; the third lens element has positive refractive power, having an object-side surface with a concave part in a vicinity of its periphery; the fourth lens element has positive refractive power, having an object-side surface with a concave part in a vicinity of its periphery and an image-side surface with a convex part in a vicinity of the optical axis; the fifth lens element has an image-side surface with a concave part in a vicinity of the optical axis and a convex part in a vicinity of its periphery.

Abstract: There is provided a lens module including: a first lens having positive refractive power; a second lens having refractive power, an image-side surface thereof being concave; a third lens having positive refractive power; a fourth lens having negative refractive power, an object-side surface thereof being convex; and a fifth lens having refractive power and having one or more inflection point formed on at least one of an object-side surface and an image-side surface thereof, wherein the first, second, third, fourth and fifth lenses are disposed in a sequential order from the first lens to the fifth lens.

Abstract: A wide-angle image taking lens system includes an aperture stop and an optical assembly including: in order from an object side to an image side: first, second, third, fourth and fifth lens elements, the system has a total of five lens elements with refractive power, wherein Abbe numbers of the first and fifth lens element are V1, V5, a distance along an optical axis between the first and second lens element is T12, a central thickness of the first lens element is CT1, focal lengths of the system, second and third lens elements are f, f2, f3, maximum effective diameters of an object-side surface of the first lens element and an image-side surface of the fifth lens element are CA11, CA52, satisfying: 1.5<V1/V5<3; 1.1<T12/CT1<2.5; 0.2<|f/f3|+|f/f2|<1.5; 0.2<CA11/CA52<0.5.

Abstract: An photographing optical lens assembly includes, in order from an object side to an image side, a first lens element with refractive power including a convex object-side surface, a second lens element with positive refractive power including a convex image-side surface, a third lens element with positive refractive power including a concave object-side surface and a convex image-side surface, a fourth lens element with negative refractive power, and a fifth lens element with positive refractive power including a convex object-side surface, a concave image-side surface and at least one inflection point. The surfaces of the fifth lens element are aspheric. By adjusting the photographing optical lens assembly, the total length of the photographing optical lens assembly is reduced, the aberration is corrected, and the image quality is improved.

Abstract: An image capturing optical lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has refractive power. The third lens element with positive refractive power has a convex image-side surface. The fourth lens element with negative refractive power has a concave object-side surface and a convex image-side surface, wherein the surfaces of the fourth lens element are aspheric. The fifth lens element with negative refractive power has a convex object-side surface and a concave image-side surface, wherein the surfaces of the fifth lens element are aspheric, and the fifth lens element has at least one inflection point on the image-side surface thereof.

Abstract: Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises five lens elements positioned sequentially from an object side to an image side. Though controlling the convex or concave shape of the surfaces and/or the refracting power of the lens elements, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.

Abstract: Disclosed herein is an imaging lens, including: a first lens having positive (+) power and being biconvex; a second lens having negative (?) power and being concave toward an image side; a third lens having positive (+) power and being biconvex; a fourth lens having positive (+) power and being convex toward the image side; and a fifth lens having negative (?) power and being concave toward the image side, wherein the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are sequentially disposed from an object side.

Abstract: An imaging lens is substantially constituted by six lenses, including: a first lens having a positive refractive power and a convex surface toward the object side; a second lens, which is cemented to the first lens, having a negative refractive power and a concave surface toward the image side; a third lens; a fourth lens; a fifth lens; and a sixth lens. The imaging lens satisfies predetermined conditional formulae.

Abstract: An optical imaging lens set includes: a first lens element with positive refractive power having an image-side surface with a convex part in a vicinity of a circular periphery of the first lens element, a second lens element having an object-side surface with a convex part in a vicinity of a circular periphery of the second lens element, a third lens element having an object-side surface with a concave part in a vicinity of a circular periphery of the third lens element, a fourth lens element having a concave object-side surface, and a plastic fifth lens element having an image-side surface with a concave part in a vicinity of the optical axis. The air gap between the second lens element and the third lens element G23, and the air gap between the third lens element and the fourth lens element G34, satisfied the relation 1.40?G23/G34.

Abstract: Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises five lens elements positioned sequentially from an object side to an image side. Through controlling the convex or concave shape of the surfaces and/or the refracting power of the lens elements, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.

Abstract: The present embodiments provide a mobile device and an optical imaging lens thereof. The optical imaging lens comprises a first lens element, an aperture, a second lens element, a third lens element, a fourth lens element, and a fifth lens element positioned in an order from an object side to an image side. Through controlling the convex or concave shape of the surfaces and/or the refracting power of the lens elements, the total length of the optical image lens is shortened, the field of view is broadened, and the better image performance is maintained. Above all, the optical imaging lens of the present invention is capable of shortening the total length of the optical imaging lens efficiently, enlarging the half field of view of the optical imaging lens, and showing better optical characteristics.

Abstract: Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises five lens elements positioned in an order from an object side to an image side. Through controlling the convex or concave shape of the surfaces of the lens elements to allow the thickness of the second lens element and the sum of all air gaps between all five lens elements along the optical axis satisfying the relation: 0.20<T2<0.50 (mm) and 0.27<(T2/Gaa)<0.40, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.

Abstract: A lens module for capturing an object light-beam from an object-side is provided. The lens module includes a first lens group, a second lens group, a third lens group, a fourth lens group and a fifth lens group sequentially-arranged from the object-side to an image-side. The five lens groups respectively have at least one lens with positive refractive-power and at least one lens with negative refractive-power. The first, third and fifth lens groups are fixed groups, while the second and fourth lens groups are movable groups. An image apparatus including the lens module is also provided.

Abstract: An imaging lens includes a positive first lens; a negative second lens with a meniscus lens shape directing a convex surface thereof to an object side near an optical axis; a positive third lens; a negative fourth lens with a meniscus lens shape directing a concave surface thereof to the object side near the optical axis; a negative fifth lens with a meniscus lens shape directing a convex surface thereof to the object side near the optical axis, arranged in this order from the object side. The imaging lens satisfies the following conditional expressions when the first lens has a focal length f1, the second lens has a focal length f2, the third lens has a focal length f3, the fourth lens has a focal length f4, and the fifth lens has a focal length f5: f1<f3 and |f2|<f3 f3<|f4| and |f2|<|f5|.

Abstract: An optical image system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has negative refractive power. The third lens element has refractive power, wherein two surfaces of the third lens element are aspheric. The fourth lens element with refractive power has a convex image-side surface, wherein two surfaces of the fourth lens element are aspheric. The fifth lens element with refractive power has a concave image-side surface, wherein two surfaces of the fifth lens element are aspheric, and the fifth lens element has an inflection point on the image-side surface thereof.

Abstract: The imaging lens substantially consists of a first lens having a biconvex shape, a second lens having a negative refractive power, a third lens having a negative refractive power and a convex surface that faces the object side, a fourth lens having a positive refractive power, and a fifth lens having a negative refractive power, of which at least one of the object-side surface and the image-side surface has at least one inflection point, in this order from the object side; and wherein conditional expression (1A): ?0.38<f/f45<?0.01 is satisfied. This conditional expression is related to the focal length f of the entire system and the combined focal length f45 of the fourth lens and the fifth lens.

Abstract: An exemplary embodiment of the present invention relates to an imaging lens, the imaging lens including, in an ordered way from an object side, a first lens having positive (+) refractive power, a second lens having negative (?) refractive power, a third lens having positive (+) refractive power, a fourth lens having negative (?) refractive power, and a fifth lens having a negative (?) refractive power, wherein the third lens takes a meniscus shape convexly formed at an object side.

Abstract: Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises five lens elements positioned in an order from an object side to an image side. Through controlling the convex or concave shape of the surfaces of the lens elements to allow the thickness of the second lens element and the sum of all air gaps between all five lens elements along the optical axis satisfying the relation: 0.20<T2<0.50 (mm) and 0.27<(T2/Gaa)<0.40, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.

Abstract: The image pickup optical system comprises: an aperture is placed on the most object side, the image pickup optical system comprises, 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 positive refractive power; a fourth lens having a positive refractive power; and a fifth lens having a negative refractive power, and the following conditional expression is satisfied: ?1.49<(r6+r7)/(r6?r7)<1.24??(1) where r6 is the paraxial radius of curvature of an object side surface of the third lens, and r7 is the paraxial radius of curvature of an image plane side surface of the third lens.

Abstract: A wide range zoom system, for microscopes. The zoom system includes five lens groups, of which, starting at the object side, the second and fourth lens group are displaceable in the axial direction relative to the first, third and fifth lens group. A stop of variable opening diameter that is stationary relative to the first, third and fifth lens group is provided between the second and fourth lens group, wherein the maximum opening diameter of said stop is in middle zoom magnifications. As magnification increases, the object-side aperture increases non-linearly in relation to the magnification, such that in regions of low magnifications the object-side aperture increases more sharply than in regions of higher magnifications.

Abstract: A five element lens system for use with an imaging sensor includes first, second, third, fourth, and fifth lens elements and an optical filter that are arranged sequentially in order from an object side to an imaging side. The lens elements are coated with an anti-reflective film. The lens system further includes an optical filter that is disposed at a distance from the imaging sensor. The lens elements are relatively positioned to each other to satisfy specific conditions. The lens elements further include thickness to diameters ratios that satisfy specific conditions. The lens system is capable of focusing images of objects located from a range of 10 cm to infinity from the lens system.

Abstract: An imaging lens includes first, second, third, fourth, and fifth lens elements arranged from an object side to an image side in the given order. The first, second, and third lens elements have positive, negative, and negative refractive powers, respectively. The third lens element has an image-side surface having a convex portion in a vicinity of a periphery of the third lens element. The fourth lens element has a concave object-side surface. The fifth lens element has an object-side surface that has a convex portion in a vicinity of an optical axis of the imaging lens, and an image-side surface that has a concave portion in a vicinity of the optical axis and a convex portion in a vicinity of a periphery of the fifth lens element.

Abstract: An imaging lens includes first to fifth lens elements arranged from an object side to an image side in the given order. Through designs of surfaces of the lens elements and relevant optical parameters, a short system length of the imaging lens may be achieved while maintaining good optical performance.

Abstract: An optical imaging lens set includes a first lens element to a plastic fifth lens element from an object side toward an image side along an optical axis. The second lens element has an image-side surface with a convex portion in a vicinity of its periphery. The fourth lens element has an image-side surface with a concave portion in a vicinity of the optical axis and a convex portion in a vicinity of its periphery.

Abstract: Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises five lens elements positioned sequentially from an object side to an image side. Through controlling the convex or concave shape of the surfaces, the refracting power of the lens elements and two parameters to meet an inequality associated with the thickness of the second lens element, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.

Abstract: Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises five lens elements positioned sequentially from an object side to an image side. Though controlling the convex or concave shape of the surfaces and/or the refracting power of the lens elements, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.

Abstract: Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises five lens elements positioned sequentially from an object side to an image side. Through controlling the convex or concave shape of the surfaces and/or the refracting power of the lens elements and designing an equation, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.

Abstract: An imaging lens includes first to fifth lens elements arranged from an object side to an image side in the given order. The image-side surface of the first lens element has a convex portion in a vicinity of its periphery. The object-side surface of the second lens element has a concave portion in a vicinity of its periphery. The image-side surface of the second lens element has a convex portion in a vicinity of its periphery. The object-side surface of the third lens element has a concave portion in a vicinity of its periphery. The fourth lens element has a positive refractive power, and the object-side surface thereof has a concave portion in a vicinity of an optical axis. The fifth lens element is made of a plastic material.

Abstract: A wafer-level lens system includes a first substrate, a first lens having a planar surface in contact with the first substrate and a concave aspheric surface, a second substrate, a second lens having a convex aspheric surface facing the first lens and a planar surface in contact with the second substrate, a third lens having a planar surface in contact with the second substrate and a concave aspheric surface, a third substrate, a fourth lens having a convex aspheric surface facing the third lens and a planar surface in contact with the third substrate, and a fifth lens having a planar surface in contact with the third substrate and a concave aspheric surface.

Abstract: Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises five lens elements positioned in an order from an object side to an image side. Through controlling the convex or concave shape of the surfaces of the lens elements to allow the thickness of the second lens element and the sum of all air gaps between all five lens elements along the optical axis satisfying the relation: 0.20<T2<0.50 (mm) and 0.27<(T2/Gaa)<0.40, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.

Abstract: An image lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial. The second lens element with refractive power has an object-side surface being concave in a paraxial region. The third lens element with negative refractive power has an object-side surface being convex in a paraxial region and an image-side surface being concave in a paraxial region. The fourth lens element with positive refractive power has an object-side surface being concave in a paraxial region and an image-side surface being convex in a paraxial region. The fifth lens element with negative refractive power has an image-side surface being concave in a paraxial region.

Abstract: The zoom lens includes a front unit including a first positive lens unit and a second positive or negative lens unit, a reflective mirror and a rear unit including two or more lens units. During zooming, the reflective mirror is not moved, and the first lens unit and at least two lens units of the rear unit are moved. When the zoom lens is retracted into a body of an image pickup apparatus, at least one of rotation of the reflective mirror such that a normal line thereto is brought closer to parallel to an optical axis of the rear unit and axial movement thereof in a direction of the optical axis of the rear unit is performed. The front unit is moved into a space formed by the at least one of the rotation and the axial movement. Conditions of 10.5<ft/|fn|<30.0 and 0.80<(Lf?L)/Lm<1.30 are satisfied.

Abstract: An imaging lens assembly comprises a fixing diaphragm and an optical set including five lenses. An arranging order from an object side to an image side is: a first lens; the fixing diaphragm; a second lens; a third lens; a fourth lens; and a fifth lens. At least one surface of the five lenses is aspheric. By the concatenation between the lenses and the adapted curvature radius, thickness/interval, refractivity, and Abbe numbers, the assembly attains a big diaphragm with wide-angle, a shorter height, and a better optical aberration.

Abstract: An image-capturing lens has, in order from an object, an object side lens group G1 and an image side lens group G2 which is disposed next to the object side lens group G1 with an air space, and focusing is performed from a distant object to a close object by moving at least a part of the image side lens group G2 along an optical axis as a focusing lens group, and image stabilization is performed by moving at least a part of the image side lens group G2 as a shift lens group so as to have components roughly orthogonal to the optical axis.

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 includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens having positive refractive power; and a fourth and a fifth lens having negative refractive power. The first lens is formed so that a curvature radius of an object-side surface is positive and the second lens is formed so that a curvature radius of an object-side surface and a curvature radius of an image plane-side surface are positive. The third lens is formed so that a curvature radius of an object-side surface is positive, and the fifth lens is formed so that a curvature radius of an object-side surface and a curvature radius of an image plane-side surface are both positive. An Abbe's number from the first and the third to the fifth lens is greater than 45, and an Abbe's number of the second lens is less than 35.

Abstract: A zoom lens includes first to third lens units having positive, negative, and positive refractive power, respectively, and a rear lens group having positive refractive power. An aperture stop is arranged between a lens surface of the second lens unit closest to the image side and a lens surface of the third lens unit closest to the image side. The third lens unit includes first and second positive lenses each including an aspheric surface, and a negative lens. In the third lens unit, a refractive index of the first positive lens, and an Abbe number and relative partial dispersion of the second positive lens are appropriately set.

Abstract: A zoom lens includes: a first lens group having a positive refracting power; a second lens group having a negative refracting power; a third lens group having a positive refracting power; a fourth lens group having a positive refracting power; and a fifth lens group having a positive refracting power and configured of sub lens groups. The first, the second, the third, the fourth, and the fifth lens groups are arranged in this order from an object plane. The third lens group serves as a first compensation lens group, and one or more of the plurality of sub lens groups serves as a second compensation lens group. Each of the first compensation lens group and the second compensation lens group independently shifts in a direction perpendicular to a light axis to allow an image formed on an image plane to be shifted in the direction perpendicular to the light axis.

Abstract: A lens optical system includes first, second, third, fourth, and fifth lenses that are arranged between an object and an image sensor where an image of the object is formed, in order from an object side, wherein the first lens has a positive (+) refractive power and an incident surface that is convex toward the object, the second lens has a negative (?) refractive power and a meniscus shape that is convex toward the object, the third lens has a positive (+) refractive power and both convex surfaces, the fourth lens has a positive (+) refractive power and a meniscus shape that is convex toward the image sensor, and the fifth lens has a negative (?) refractive power and an incident surface and an exit surface, at least one of the incident surface and the exit surface is an aspherical surface.

Abstract: To provide an image pickup lens with a five-lens configuration in which aberrations are corrected favorably despite its compactness. An image pickup lens 10 includes a first lens L1 having a positive refractive power and having a convex face directed to an object side, a second lens L2 of a meniscus shape having a negative refractive power and having a concave face directed to an image side, a third lens L3 having a positive refractive power, a fourth lens L4 having a positive refractive power and having a convex face directed to the image side, and a fifth lens L5 having a negative refractive power and having a concave face directed to the image side, in this order from the object side. Here, the focal length of the fifth lens, the focal length of the entire system of the image pickup lens, and an air separation on an optical axis between the fourth lens and the fifth lens satisfy predetermined conditions.