Abstract: An imaging lens includes a first lens element, a second lens element, a third lens element, and a fourth lens element arranged from an object side to an image side in the given order. The image-side surface of the first lens element comprises a convex portion in a vicinity of a periphery of the first lens element. The imaging lens has a system length less than 3.0 mm. The imaging lens does not have any lens element with refractive power other than the first, second, third, and fourth 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 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: 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: An imaging lens includes a first lens element, a second lens element, a third lens element, and a fourth lens element arranged from an object side to an image side in the given order. The image-side surface of the first lens element comprises a convex portion in a vicinity of a periphery of the first lens element. The imaging lens has a system length less than 3.0 mm. The imaging lens does not have any lens element with refractive power other than the first, second, third, and fourth lens elements.

Abstract: A storage apparatus includes a storage device having a first storage assembly with a plurality of first storage racks and a second storage assembly with a plurality of second storage racks surrounding the first storage racks. At least one of the first and second storage assemblies includes a removable carrier rack configured to align with a selected storage rack of the other first or second storage assembly. A protective cover device includes first and second protective cover assemblies respective disposed on top ends of the first and second storage assemblies. At least one of the first and second protective cover assemblies is openable at an area corresponding to the top of the carrier rack to permit removal of the same.

Abstract: An optical imaging lens includes a first lens element, a second lens element, a third lens element, a fourth lens element, and a fifth lens element sequentially arranged along an optical axis from an object side to an image side. Each of the first lens element to the fifth lens element has an object-side surface facing toward the object side and an image-side surface facing toward the image side. A distance between the image-side surface of the fifth lens element and an image plane along the optical axis is BFL, an air gap between the first lens element and the second lens element along the optical axis is G12, an air gap between the fourth lens element and the fifth lens element along the optical axis is G45, a central thickness of the fifth lens element along the optical axis is T5, satisfying the equation: 1.861?(BFL+G12)/(G45+T5)?3.055.

Abstract: An optical imaging lens includes a first lens element, a second lens element, a third lens element, a fourth lens element, and a fifth lens element sequentially arranged along an optical axis from an object side to an image side. Each of the first lens element to the fifth lens element has an object-side surface facing toward the object side and an image-side surface facing toward the image side. A distance between the image-side surface of the fifth lens element and an image plane along the optical axis is BFL, an air gap between the first lens element and the second lens element along the optical axis is G12, an air gap between the fourth lens element and the fifth lens element along the optical axis is G45, a central thickness of the fifth lens element along the optical axis is T5, satisfying the equation: 1.861?(BFL+G12)/(G45+T5)?3.055.

Abstract: An imaging lens includes a first lens element, a second lens element, a third lens element, and a fourth lens element arranged from an object side to an image side in the given order. The first lens element has positive refractive power and an image-side surface with a concave portion in the vicinity of an optical axis. The object-side surface of the third lens element has a concave portion in a vicinity of an optical axis of the imaging lens. The object-side surface of the fourth lens element has a convex portion in a vicinity of the optical axis of the imaging lens. The imaging lens does not have any lens element with refractive power other than the first, second, third, and fourth lens elements.

Abstract: The optical imaging lens includes, sequentially from an object side to an image side in order from an optical axis, first, second, third, fourth, and fifth lens elements. The first lens element is made of plastic. The object-side of the second lens element has a convex portion in a vicinity of the optical axis. The third lens element is made of plastic. The object-side surface of the fourth lens element has a concave portion in the vicinity of its periphery. The sum of thicknesses of all five lens elements along the optical axis is ALT, the distance between the image-side surface of the fifth lens element and an image plane along the optical axis is BFL, and the optical imaging lens satisfies the equation: 1.167?ALT/BFL?1.685.

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: 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 an image-side surface with a concave portion in the vicinity of its periphery. The second lens element has an image-side surface with a convex portion in the vicinity of the optical axis. The third lens element has a positive refractive power. The imaging lens does not have any lens element with refractive power other than the first, second, third, and fourth lens elements.

Abstract: The optical imaging lens includes, sequentially from an object side to an image side in order from an optical axis, first, second, third, fourth, and fifth lens elements. The first lens element is made of plastic. The object-side of the second lens element has a convex portion in a vicinity of the optical axis. The third lens element is made of plastic. The object-side surface of the fourth lens element has a concave portion in the vicinity of its periphery. The sum of thicknesses of all five lens elements along the optical axis is ALT, the distance between the image-side surface of the fifth lens element and an image plane along the optical axis is BFL, and the optical imaging lens satisfies the equation: 1.167?ALT/BFL?1.685.

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 serum-free culture medium for hematopoietic stem cell (HSC) expansion is provided. The serum-free culture medium includes a serum-free base medium, cytokines, an umbilical cord mesenchymal stem cell conditioned medium and supplemental components. The cytokines comprise stem cell factor, thrombopoietin and hematopoietic growth factor Flt3 ligand. The umbilical cord mesenchymal stern cell conditioned medium is derived from culturing human umbilical cord mesenchymal stem cells. The supplemental components comprise vitamin C, vitamin E or a combination of vitamin C and vitamin E.

Abstract: The optical imaging lens includes, sequentially from an object side to an image side, an aperture stop, first, second, third, fourth, and fifth lens elements. The first lens element is made of plastic. The object-side of the second lens element has a convex portion in a vicinity of its periphery. The third lens element has positive refracting power. The object-side surface of the fourth lens element has a concave 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. 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 method for cryopreserving an umbilical cord tissue strip includes the steps of: (a) applying tension to a segment of an umbilical cord to expand spaces between umbilical cord vessels; (b) cutting the segment of the umbilical cord, at the spaces between the umbilical cord vessels in a longitudinal direction that parallels a length of the umbilical cord vessels, to obtain the umbilical cord tissue strip, wherein the umbilical cord tissue strip contains Wharton's jelly from a perivascular region, a intervascular region, and a subamnion region; (c) incubating the umbilical cord tissue strip with a cryogenic composition; and (d) cryopreserving the umbilical cord tissue strip containing the Wharton's jelly and the cryogenic composition.

Abstract: A storage apparatus includes a storage device having a first storage assembly with a plurality of first storage racks and a second storage assembly with a plurality of second storage racks surrounding the first storage racks. At least one of the first and second storage assemblies includes a removable carrier rack configured to align with a selected storage rack of the other first or second storage assembly. A protective cover device includes first and second protective cover assemblies respective disposed on top ends of the first and second storage assemblies. At least one of the first and second protective cover assemblies is openable at an area corresponding to the top of the carrier rack to permit removal of the same.

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