Abstract: An imaging lens includes plastic-made first, second, third, and fourth lens elements arranged in the given order from an object side to an imaging side. The first lens element has a positive focusing power and is biconvex. The second lens element has a negative focusing power, is biconcave, and has an abbe number not greater than 30. The third lens element has a positive focusing power and has a convex imaging-side surface facing toward the imaging side. The fourth lens element has an imaging-side surface formed with a concave area in a vicinity of an optical axis of the fourth lens element. The imaging lens further includes an aperture stop disposed between the first and second lens elements.

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. Through surface designs of the lens elements, the imaging lens has a relatively short overall length while maintaining good optical performance.

Abstract: An optical imaging lens includes, from an object side to an image side, an aperture stop, first, second, third, fourth, and fifth lens elements. The first lens element has a positive refracting power, and its object-side surface has a convex portion near an optical axis and a convex portion near its periphery. The second lens element has a negative refracting power. The third lens element has a negative refracting power, and its object-side surface has a concave portion near its periphery. The fourth lens element has a positive refracting power, an object-side surface having a concave portion near the optical axis and a concave portion near its periphery, and an image-side surface having a convex portion near the optical axis and a convex portion near its periphery. The image-side surface of the fifth lens element has a concave portion near the optical axis and a convex portion near its periphery.

Abstract: A lens barrel includes a barrel wall disposed about a longitudinal axis, an external thread continuously formed on the barrel wall and having a continuous crest, and two parting lines that are longitudinally formed on the external thread and that are symmetrical about the longitudinal axis. A projection of the crest of the external thread on a plane orthogonal to the longitudinal axis has a maximum diameter and a minimum diameter. A difference between the maximum and minimum diameters is between 0.04 mm and 0.18 mm. Each of the two parting lines is disposed on portions of the external thread that define the minimum diameter.

Abstract: An imaging lens includes plastic-made first, second, third, and fourth lens elements arranged in the given order from an object side to an imaging side. The first lens element has a positive focusing power and is biconvex. The second lens element has a negative focusing power, is biconcave, and has an abbe number not greater than 30. The third lens element has a positive focusing power and has a convex imaging-side surface facing toward the imaging side. The fourth lens element has an imaging-side surface formed with a concave area in a vicinity of an optical axis of the fourth lens element. The imaging lens further includes an aperture stop disposed between the first and second lens elements.

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: 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, the refracting power of the lens elements and/or equations between parameters, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.

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: An optical imaging lens includes five lens elements. The first lens element has a positive refracting power, and its object-side surface has a convex portion near the optical axis and a concave portion near its periphery. The second lens element has a negative refracting power, and its object-side surface has a convex portion near its periphery. The third lens element has an object-side surface having a concave portion near its periphery and an image-side surface having a convex portion near its periphery. The fourth lens element has an object-side surface having a concave portion near its periphery and an image-side surface having a convex portion near its periphery. The image-side surface of the fifth lens element has a concave portion in a vicinity of the optical axis and a convex portion near its periphery.

Abstract: An optical imaging lens includes, from an object side to an image side, an aperture stop, first, second, third, fourth, and fifth lens elements. The first lens element has a positive refracting power, its object-side surface has a convex portion in a vicinity of an optical axis, and its image-side surface has a concave portion in the vicinity of the optical axis. The second lens element has a negative refracting power, and its image-side surface is concave. The fourth lens element has a convex image-side surface. The object-side surface of the fifth lens element has a convex portion in the vicinity of the optical axis, and the image-side surface of the fifth lens element has a concave portion in the vicinity of the optical axis.

Abstract: An optical imaging lens includes first, second, third, fourth and fifth lens elements positioned sequentially from an object side to an image side. The first lens element with positive refractive power has an object-side surface comprising a convex portion in the optical axis vicinity. The second lens element with negative refractive power has an object-side surface comprising a convex portion in the optical axis vicinity and an image-side surface comprising a concave portion in the optical axis vicinity. The third lens element has an image-side surface comprising a convex portion in the periphery. The fourth lens element has an image-side surface comprising a convex portion in the optical axis vicinity. The fifth lens element has an object-side surface comprising a convex portion in the optical axis vicinity and an image-side surface comprising a concave portion in the optical axis vicinity and a convex portion in the periphery.

Abstract: An optical imaging lens includes, from an object side to an image side, an aperture stop, first, second, third, fourth, and fifth lens elements. The first lens element has a positive refracting power, its object-side surface has a convex portion in a vicinity of an optical axis, and its image-side surface has a concave portion in the vicinity of the optical axis. The second lens element has a negative refracting power, and its image-side surface is concave. The fourth lens element has a convex image-side surface. The object-side surface of the fifth lens element has a convex portion in the vicinity of the optical axis, and the image-side surface of the fifth lens element has a concave portion in the vicinity of the optical axis.

Abstract: An optical imaging lens includes five lens elements. The first lens element has a positive refracting power, and its object-side surface has a convex portion near the optical axis and a concave portion near its periphery. The second lens element has a negative refracting power, and its object-side surface has a convex portion near its periphery. The third lens element has an object-side surface having a concave portion near its periphery and an image-side surface having a convex portion near its periphery. The fourth lens element has an object-side surface having a concave portion near its periphery and an image-side surface having a convex portion near its periphery. The image-side surface of the fifth lens element has a concave portion in a vicinity of the optical axis and a convex portion near its periphery.

Abstract: An optical imaging lens includes, from an object side to an image side, an aperture stop, first, second, third, fourth, and fifth lens elements. The first lens element has a positive refracting power, and its object-side surface has a convex portion near an optical axis and a convex portion near its periphery. The second lens element has a negative refracting power. The third lens element has a negative refracting power, and its object-side surface has a concave portion near its periphery. The fourth lens element has a positive refracting power, an object-side surface having a concave portion near the optical axis and a concave portion near its periphery, and an image-side surface having a convex portion near the optical axis and a convex portion near its periphery. The image-side surface of the fifth lens element has a concave portion near the optical axis and a convex portion near its periphery.

Abstract: An imaging lens includes: a first lens element having a positive refracting power, and having a convex object-side surface facing toward an object side; a second lens element having a negative refracting power, and having a concave image-side surface facing toward an image side; a third lens element having a negative refracting power; a fourth lens having a convex image-side surface facing toward the image side; and a fifth lens element having an image-side surface with concave and convex portions and facing toward the image side. Absolute value of a difference between Abbe numbers of the second and third lens elements is less than 10. A quotient of a thickness of the fourth lens element divided by a sum of widths of air gap among the lens elements ranges between 0.5 and 1.

Abstract: An imaging lens includes a lens barrel having a base wall with a light incident hole around an optical axis, an imaging unit disposed in the lens barrel and including imaging components arranged along the optical axis, and a light shielding plate having an annular fixing portion for positioning the light shielding plate and a bent portion bent from an inner periphery of the fixing portion and extending slantingly toward the optical axis. The light shielding plate is disposed at one of a position between the base wall and one of the imaging components that is adjacent to the base wall, and a position between two adjacent ones of the imaging components.

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: A light-guide module includes a light-guide strip having opposite first and second ends, a light-entry surface disposed at the first end, a light-exit surface extending between the first and second ends, and first and second working surfaces disposed parallel to each other and extending between the first and second ends. One of the first and second working surfaces defines a light-scatter zone and includes a plurality of micro-scatter structures that are disposed within the light-scatter zone and that configure the light-scatter zone with a light-scattering ability that varies from the first end to the second end. The light-guide module also includes a reflecting element disposed to reflect light that exits from the light-guide strip via the first and second working surfaces back into the light-guide strip via the first and second working surfaces, respectively.

Abstract: An imaging lens includes first, second, third, and fourth lens elements arranged from an object side to an image side in the given order. The first lens element has a positive refractive power, and a convex object-side surface. The second lens element has a negative refractive power, and an image-side surface with a convex portion. The third lens element has an object-side surface with a concave portion. The fourth lens element has an object-side surface with a convex portion, and an image-side surface with a convex portion and a concave portion.

Abstract: An imaging lens includes first, second, third, and fourth lens elements arranged from an object side to an image side in the given order. The first lens element has a positive refractive power, and a convex object-side surface. The second lens element has a negative refractive power, and an image-side surface with a convex portion. The third lens element has a convex image-side surface. The fourth lens element has an object-side surface with a convex portion, and a curved image-side surface with a concave portion and a convex portion.