Abstract: An imaging lens includes first, second, third, fourth, fifth, sixth and seventh lens elements arranged in a sequence from an object side to an image side along an optical axis. Each lens element has an object-side surface and an image-side surface. The object-side of the third lens element has a convex portion in a vicinity of a periphery. The object-side of the fifth lens element has a convex portion in a vicinity of the optical axis and a concave portion in a vicinity of a periphery. The object-side of the sixth lens element has a concave portion in a vicinity of a periphery. All of lens elements having refracting power of the imaging lens are the first, second, third, fourth, fifth, sixth and seventh lens elements.

Abstract: An optical imaging lens includes a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element arranged in order from an object side to an image side along an optical axis. Each lens element has an object-side surface and an image-side surface. The optical imaging lens satisfies: V4+V5+V6+V7?175.00, wherein V4 is an Abbe number of the fourth lens element, V5 is an Abbe number of the fifth lens element, V6 is an Abbe number of the sixth lens element, and V7 is an Abbe number of the seventh lens element.

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: An ocular optical system includes a first lens element, a second lens element and a third lens element from an eye-side to a display-side in order along an optical axis. The first lens element, the second lens element and the third lens element each include an eye-side surface and a display-side surface. The eye-side surface of the first lens element has a concave portion in a vicinity of the optical axis. The display-side surface of the third lens element has a concave portion in a vicinity of a periphery of the third lens element. The ocular optical system satisfies 1?TTL/ER?10, wherein TTL is a distance from the eye-side surface of the first lens element to the display screen along the optical axis, and ER is a distance from a pupil of the observer to the eye-side surface of the first lens element along the optical axis.

Abstract: An ocular optical system includes a first lens element, a second lens element, and a third lens element from an eye-side to a display-side in order along an optical axis. The first lens element, the second lens element, and the third lens element each include an eye-side surface and a display-side surface. The first lens element has refracting power. The display-side surface of the second lens element has a convex portion in a vicinity of the optical axis. The third lens element has refracting power. The ocular optical system satisfies: T3/G23?4.3; and G3D/T3?3.51, where T3 is a thickness of the third lens element along the optical axis, G23 is an air gap from the second lens element to the third lens element along the optical axis, and G3D is a distance from the third lens element to the display screen along the optical axis.

Abstract: An ocular optical system includes a first lens element and a second lens element from an eye-side to a display-side in order along an optical axis. The first lens element and the second lens element each include an eye-side surface and a display-side surface. The eye-side surface of the first lens element has a convex portion in a vicinity of the optical axis. The second lens element has negative refracting power. The ocular optical system satisfies 1.5?|f2/f1| and 250 millimeters/EFL?10, wherein f2 is the focal length of the second lens element, fl is the focal length of the first lens element, and EFL is the effective focal length of the ocular optical system.

Abstract: An ocular optical system adapted for an imaging ray of a display image being entered an observer's eye through the ocular optical system to form an image is provided. The ocular optical system includes a first lens and a second lens arranged in order from an eye-side to a display-side along an optical axis. Each of the first lens and the second lens has an eye-side surface and a display-side surface. A maximum distance between the display-side surface of the first lens and the eye-side surface of the second lens parallel to a direction of the optical axis is less than 5 millimeters, and the ocular optical system satisfies: 6?DLD/EPD?20. DLD is a diagonal length of the displayed image corresponding to a single pupil of the observer, and EPD represents an exit pupil diameter of the ocular optical system.

Abstract: An ocular optical system for imaging of imaging rays entering an eye of an observer via the ocular optical system from a display screen is provided. A side facing towards the eye is an eye-side, and a side facing towards the display screen is a display-side. The ocular optical system includes a first lens element, a second lens element, and a third lens element from the eye-side to the display-side in order along an optical axis. The first lens element, the second lens element, and the third lens element each include an eye-side surface and a display-side surface. The second lens element has positive refracting power, and the display-side surface of the second lens element has a concave portion in a vicinity of the optical axis.

Abstract: An optical imaging lens including an aperture stop, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element arranged in sequence from an object side to an image side along an optical axis is provided. Each lens element includes an object-side surface and an image-side surface. The material of the first lens element is plastic. The object-side surface of the second lens element has a concave portion in a vicinity of the optical axis. The image-side surface of the second lens element has a concave portion in a vicinity of a periphery of the second lens element. The object-side surface of the third lens element has a concave portion in a vicinity of a periphery of the third lens element. The image-side surface of the third lens element has a concave portion in a vicinity of the optical axis. The fourth lens element has positive refractive power.

Abstract: An optical imaging lens includes a first lens element, a second lens element, a third lens element, and a fourth lens element from an object side to an image side in order along an optical axis. The first lens element to the fourth lens element each include an object-side surface and an image-side surface. The first lens element has positive refracting power. The second lens element has negative refracting power. At least one of the object-side surface and the image-side surface of the third lens element is an aspheric surface. At least one of the object-side surface and the image-side surface of the fourth lens element is an aspheric surface. A maximum distance between the image-side surface of the first lens element and the object-side surface of the second lens element in a direction parallel to the optical axis is less than 0.2 mm.

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: A first optical imaging system includes, in order from the object side to the image side, a first lens element, a second lens element, and a third lens element, arranged along an optical axis. A second optical imaging system includes, in order from the object side to the image side, a first lens element, a second lens element, a third lens element, and a fourth lens element, arranged along an optical axis. A third optical imaging system is a telecentric lens system having only lens elements having a refractive power and a chief ray angle smaller than 1 degree. The lens elements of the optical imaging systems may be made of the same material having absorption in visible wavelengths and high transmission in near infrared radiation. The lens elements may be coated with an antireflective coating that is optimized for near infrared radiation.

Abstract: Example embodiments provide for an optical lens assembly and imaging lens with IR light filtering. The lens comprises a body having two surfaces and a plurality of layers of optical thin film layered along a direction formed on at least one surface. The optical thin films comprise less than 20 layers and thicker than 400 nm and thinner than 2000 nm thickness. Through the alternately layered layers of optical thin film, the transmittance of the lens for incident light in infrared ray band is reduced. Therefore, the infrared ray is mostly filtered without use of an additional infrared ray filter.

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

Abstract: the An optical imaging lens includes four lens elements positioned in order from object side to the image side of the optical imaging lens. Through controlling the convex or concave shape of the surfaces of lens elements, the refracting power of lens elements, the thickness of the at least one lens element, one or more air gaps between lens elements along the optical axis, and a half field of view HFOV of the optical imaging lens, an embodiment satisfies the relation: 4.21?T3/(G12×tan(HFOV))?7.55, for which T3 is the thickness of the third lens element and G12 is the air gap between the first lens element and the second lens element. The optical imaging lens provided by embodiments of the present invention has better optical characteristics and a reduced total length in comparison to conventional lenses.

Abstract: Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises an aperture stop and five lens elements positioned sequentially from an object side to an image side. Through controlling the convex or concave shape of the surfaces of the lens elements and designing parameters satisfying at least one inequality, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.

Abstract: An optical imaging lens includes six lens elements disposed sequentially from an object side to an image side. The first lens element has a positive refracting power and the image-side surface of the second lens element comprises a concave portion in a vicinity of the optical axis. The third lens element has a positive refracting power and the image-side surface of the fourth lens element comprises a convex portion in a vicinity of the optical axis. The image-side surface of the fifth lens element comprises a convex portion in a vicinity of the optical axis, the image-side surface of the sixth lens element comprises a concave portion in a vicinity of the optical axis, and the optical imaging lens as a whole has only the six lens elements having refractive power.

Abstract: An optical imaging lens includes, first, second, third, fourth and fifth lens elements arranged sequentially from an object side to an image side along an optical axis. The first lens element has a positive refractive power and the object-side surface of the first lens element comprises a convex portion in a vicinity of its periphery. The image-side surface of the second lens element comprises a concave portion in a vicinity of the optical axis. The object-side surface of the third lens element comprises a concave portion in a vicinity of its periphery. The image-side surface of the fourth lens element comprises a convex portion in a vicinity of the optical axis. The image-side surface of the fifth lens element comprises a concave portion in a vicinity of the optical axis and for the optical imaging lens as a whole, only the five lens elements have refractive power.

Abstract: An optical lens assembly includes a hollow retainer having an inner surface, an object-side opening, and an image-side opening, and an optical lens integrally formed with formation of the retainer and filled a portion of the retainer. The optical lens includes an object-side surface facing toward the object-side opening, and image-side surface facing toward the image-side opening, and a lateral surface extending from the object-side surface to the image-side surface. The retainer and the optical lens are aligned along an optical axis.

Abstract: An optical imaging lens includes: a first, second, third, fourth, fifth and sixth lens element, the first lens element having an image-side surface with a concave part in a vicinity of its periphery, the second lens element has negative refractive power, the third lens element has an image-side surface with a convex part in a vicinity of its periphery, the fourth lens element has positive refractive power, the fifth lens element has an image-side surface with a concave part in a vicinity of the optical axis, the sixth lens element has an image-side surface with a concave part in a vicinity of the optical axis, and with a convex part in a vicinity of its periphery, where the optical imaging lens set does not include any lens element with refractive power other than said first, second, third, fourth, fifth and sixth lens elements.