Abstract: Disclosed is an optical system for imaging, which enables high resolution. An optical system for imaging, which focuses inspection light and monitoring light on an inspection target, includes a dioptric group configured to receive inspection light and monitoring light and to primarily focus the inspection light and the monitoring light on different locations, and a reflection dioptric group configured to reflect and refract the inspection light and the monitoring light that have passed through the dioptric group and to bring the inspection light and the monitoring light into one focus.

Abstract: There is provided a compact and high-resolution imaging lens at a low cost.

Abstract: The present disclosure provides an optical imaging lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens having positive refractive power; a second lens having positive refractive power and a convex object-side surface; and a third lens having negative refractive power. A distance TTL along the optical axis from an object-side surface of the first lens to an imaging plane of the optical imaging lens assembly and half of a diagonal length ImgH of an effective pixel area on the imaging plane satisfy 2.0<TTL/ImgH<2.5.

Abstract: The disclosure provides an optical imaging lens assembly, which sequentially includes from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens with a refractive power respectively; a center thickness CT3 of the third lens on the optical axis and a center thickness CT4 of the fourth lens on the optical axis satisfy 1.0?CT4/CT3<1.5; and a spacing distance T34 between the third lens and the fourth lens on the optical axis and a spacing distance T45 between the fourth lens and the fifth lens on the optical axis satisfy 4.0<T34/T45<15.5.

Abstract: There is provided a compact and high-resolution imaging lens at a low cost.

Abstract: The disclosure provides an optical imaging lens assembly, which sequentially includes, from an object side to an image side along an optical axis, a first lens with a positive refractive power, a second lens, a third lens with a positive refractive power, a fourth lens, a fifth lens with a positive refractive power and a sixth lens with a negative refractive power, wherein a total effective focal length f of the optical imaging lens assembly and an entrance pupil diameter (EPD) of the optical imaging lens assembly meet f/EPD<1.35; and an effective focal length f3 of the third lens, an effective focal length f5 of the fifth lens and an effective focal length f1 of the first lens meet 0.9<(f3+f5)/f1<1.7.

Abstract: There is provided a compact imaging lens configured to properly correct aberrations. The imaging lens includes, in order from an object side to an image side, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, a third lens L3 with positive refractive power, a fourth lens L4 with positive refractive power, a fifth lens L5, a sixth lens L6, a seventh lens L7 with positive refractive power, and an eighth lens L8 with negative refractive power. The eighth lens L8 is formed in a shape of a meniscus lens in a paraxial region, and has an aspheric image-side surface having at least one inflection point. In addition, the following conditional expressions are satisfied: ?5.00<f2/f<?2.00 10.00<f4/f<25.00 where f: a focal length of the overall optical system of the imaging lens, f2: a focal length of the second lens, and f4: a focal length of the fourth lens.

Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of low profile and low F-number. An imaging lens comprising in order from an object side to an image side, a first lens with positive refractive power having an object-side surface being convex in a paraxial region, a second lens with negative refractive power in a paraxial region, a third lens with negative refractive power having an object-side surface being convex in a paraxial region, a fourth lens having an object-side surface being convex in a paraxial region, a fifth lens with negative refractive power in a paraxial region, and a sixth lens with positive refractive power having an image-side surface being convex in a paraxial region, and predetermined conditional expressions are satisfied.

Abstract: An optical imaging lens sequentially includes, from an object side to an image side along an optical axis: a first lens (E1) with refractive power; a second lens (E2) with positive refractive power; a third lens (E3) with positive refractive power; a fourth lens (E4) with refractive power; a fifth lens (E5) with positive refractive power; a sixth lens (E6) with refractive power; and a seventh lens (E7) with refractive power. A total effective focal length f of the optical imaging lens and a curvature radius R4 of an image-side surface of the second lens meet 0.6<R4/f<1.5. TTL is a distance from an object-side surface of the first lens to an imaging surface of the optical imaging lens on the optical axis, and ImgH is a half of a diagonal length of an effective pixel region on the imaging surface of the optical imaging lens, TTL and ImgH meet 0.55<TTL/(ImgH×2)<0.75.

Abstract: An imaging lens which uses a larger number of constituent lenses for higher performance and features compactness and a wide field of view. The imaging lens is composed of seven lenses to form an image of an object on a solid-state image sensor. The constituent lenses are arranged in the following order from an object side to an image side: a first lens with positive refractive power; a second lens with positive or negative refractive power; a third lens with negative refractive power; a fourth lens with positive or negative refractive power as a double-sided aspheric lens; a meniscus fifth lens having a convex surface on the image side; a sixth lens with positive or negative refractive power as a double-sided aspheric lens; and a seventh lens with negative refractive power, in which an air gap is provided between lenses.

Abstract: An imaging lens which uses a larger number of constituent lenses for higher performance and features compactness and a wide field of view. The imaging lens is composed of seven lenses to form an image of an object on a solid-state image sensor. The constituent lenses are arranged in the following order from an object side to an image side: a first lens with positive refractive power; a second lens with positive or negative refractive power; a third lens with negative refractive power; a fourth lens with positive or negative refractive power as a double-sided aspheric lens; a meniscus fifth lens having a convex surface on the image side; a sixth lens with positive or negative refractive power as a double-sided aspheric lens; and a seventh lens with negative refractive power, in which an air gap is provided between lenses.

Abstract: The disclosure provides a zoom lens group, sequentially including, from an object side to an image side along an optical axis: a first lens group with positive refractive power, including a first lens with refractive power and a second lens with refractive power, which are sequentially arranged along the optical axis; a second lens group with negative refractive power, including a third lens with negative refractive power and a fourth lens with refractive power, which are sequentially arranged along the optical axis; and a third lens group with positive refractive power, including a fifth lens with positive refractive power, a sixth lens with refractive power, a seventh lens with negative refractive power and an eighth lens with refractive power, which are sequentially arranged along the optical axis, Positions of the second lens group and the third lens group on the optical axis are adjustable.

Abstract: Disclosed herein is an optical imaging lens group, including, in order from an object side to an image side along an optical axis: a first lens group having a refractive power, in which an image side surface of a lens closest to an imaging side is concave; a second and a third lens group having a refractive power; and a fourth lens group having a negative refractive power, in which an image side surface of a lens closest to the imaging side is concave and includes at least one inflection point, wherein the first lens group is a fixed group, and the second, third and fourth lens groups move on the optical axis to realize continuous zoom from a wide-angle end to a telephoto end; and an on-axis distance TTL and an effective focal length ft of the optical imaging lens group at the telephoto end satisfy: 0.8<TTL/ft<1.5.

Abstract: An optical camera lens assembly is provided, including: a lens group, including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged sequentially along an optical axis from an object side to an image side, where, each of the first, the fourth, and the sixth lens has a positive refractive power, and each of the second, the third, the fifth, and the seventh lens has a negative refractive power; and a plurality of spacing elements, including a third spacing element disposed between the third lens and the fourth lens and in contact with an image-side surface of the third lens; the optical camera lens assembly satisfies: 3.0<(R3+R4)/d3s<5.0.

Abstract: There is provided a compact and high-resolution imaging lens at a low cost.

Abstract: There is provided a compact and high-resolution imaging lens at a low cost.

Abstract: Disclosed are an optical lens, a camera module and a camera. From an object side to an image side along an optical axis, the optical lens includes: a first lens having a positive focal power and a convex object side surface; a second lens having a negative focal power; a third lens having a negative focal power; a fourth lens having a negative focal power; a fifth lens having a positive focal power, an object side surface of the fifth lens is convex at a paraxial region thereof, and an image side surface of the fifth lens is concave at a paraxial region thereof; a stop disposed between the second and third lens; and a filter disposed between the fifth lens and an imaging plane. The camera module includes the optical lens and an image sensor, and the camera includes the camera module.

Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of a low profile and a low F-number. An imaging lens comprises in order from an object side to an image side, a first lens with positive refractive power having a convex object-side surface in a paraxial region, a second lens with negative refractive power in a paraxial region, a third lens with positive refractive power in a paraxial region, a fourth lens, a fifth lens with negative refractive power in a paraxial region, a sixth lens with positive refractive power having a convex object-side surface in a paraxial region, and a seventh lens with negative refractive power having a concave image-side surface in a paraxial region, and predetermined conditional expressions are satisfied.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens having negative refractive power; a fourth lens having negative refractive power; a fifth lens; a sixth lens; a seventh lens; an eighth lens; and a ninth lens having negative refractive power, arranged in this order from an object side to an image plane side. The ninth lens is formed in a shape so that a surface thereof on the image plane side has an aspherical shape having an inflection point.