66results about How to "Aberration correction" patented technology

The invention provides an optical lens, which sequentially comprises a first lens with negative focal power from an object side to an imaging surface along an optical axis, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with negative focal power from the object side to the imaging surface, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a convex surface; the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a convex surface; the object side surface of the seventh lens is a concave surface; and the object side surface of the eighth lens is a convex surface, and the image side surface of the eighth lens is a concave surface. The optical lens provided by the invention has the advantage of excellent imaging quality through specific surface shape arrangement and reasonable focal power distribution.

The invention discloses an optical lens, a camera module and terminal equipment, the optical lens comprises seven lenses with refractive power, the first lens has negative refractive power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; the second lens element with negative refractive power has a concave object-side surface and a convex image-side surface. The third lens element with positive refractive power has a convex object-side surface and a convex image-side surface. The fourth lens element with positive refractive power has a convex object-side surface and a convex image-side surface. A fifth lens element with refractive power; the sixth lens has refractive power, the seventh lens has positive refractive power, and the object side surface of the seventh lens is a convex surface; the optical lens satisfies the following relational expressions: FOV is greater than or equal to 140deg and less than or equal to 151deg, 6.4 lt; tTL / IMGHlt; 7 and 1lt; sAGs1 / CT1lt; and 1.25. According to the optical lens, the camera module and the terminal equipment, high-pixel imaging can be taken into account while the miniaturization design of the optical lens is met.

The invention provides an optical lens, which sequentially comprises a first lens with positive focal power from an object side to an imaging surface along an optical axis, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with negative focal power from the object side to the imaging surface, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a convex surface; the fifth lens has positive focal power, and the object side surface of the fifth lens is a convex surface near the optical axis; the image-side surface is a concave surface in a paraxial region; the sixth lens has negative focal power; and the object side surface of the seventh lens is a concave surface, and the image side surface of the seventh lens is a concave surface near the optical axis. According to the optical lens provided by the invention, through specific surface shape matching and reasonable focal power distribution, the imaging quality of the optical lens can be improved, the aberration can be reduced, and the imaging quality of the optical lens can be improved.

The invention relates to a small projection lens. Comprising a first lens with positive focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with positive focal power, a fifth lens with positive focal power, a diaphragm, a sixth lens with positive focal power and a seventh lens with negative focal power which are sequentially arranged along the direction of an optical axis, the small projection lens comprises a first lens with positive focal power, an eighth lens with positive focal power, a ninth lens with negative focal power, a tenth lens with positive focal power and an eleventh lens with positive focal power, and the effective focal length and the total length of the small projection lens are reasonably set. The camera lens is small in size, low in cost, small in projection ratio and large in aperture, can be matched with multiple DMD chips, provides enough projection brightness and size, is clear and sharp in projection picture, high in contrast ratio and accurate in color restoration, and meets strict use requirements under vehicle-mounted high and low temperature environment conditions at the same time.

The invention relates to a light and miniature big-target-surface low-light lens, and the lens comprises a front lens group A, a diaphragm B and a rear lens group C, wherein the front lens group A, the diaphragm B and the rear lens group C are sequentially arranged in an incident direction of an optical path. The front lens group A includes a positive meniscus lens A1, a negative meniscus lens A2,a biconcave lens A3 and a biconvex lens A4, wherein the positive meniscus lens A1, the negative meniscus lens A2, the biconcave lens A3 and the biconvex lens A4 are sequentially arranged in an incident direction of the optical path. The biconcave lens A3 and the biconvex lens A4 are in close connection with each other as a first bonding group. The rear lens group C includes a biconcave lens C1, abiconvex lens C2, a biconvex lens C3, a plano-convex lens C4 and a negative meniscus lens C5, wherein the biconcave lens C1, the biconvex lens C2, the biconvex lens C3, the plano-convex lens C4 and the negative meniscus lens C5 are sequentially arranged in an incident direction of the optical path. The biconcave lens C1 and the biconvex lens C2 are in close connection with each other as a secondbonding group. The invention also relates to an imaging method of the lens. The lens is reasonable in design, effectively improves the imaging quality under the requirement of the large target surfaceof the lens, reduces the number of optical lenses, and realizes light and miniature lens. The lens has strong light collecting and light transmitting ability, and the target surface of the lens is large. The lens is high in optical resolution, is large in angle of view, and is large in observable range.

The utility model provides a transmission-type imaging spectrometer. The transmission-type imaging spectrometer comprises a slit, a collimating lens group, a light splitting module, an imaging group and a detector which are arranged in sequence, the light splitting module comprises a grating and a prism; polychromatic light enters the collimating lens group through the slit, is collimated into parallel light, is projected to the grating for diffraction light splitting, then enters the prism for refraction light splitting, and is converged on the detector through the imaging group after light splitting. According to the utility model, the light transmission efficiency can be improved, aberration can be corrected, and large-area image correction can be realized.

The invention discloses an optical lens, a camera module and a terminal device, the optical lens comprises six lenses, the first lens has negative refractive power, and the object side surface and the image side surface of the first lens are respectively a convex surface and a concave surface; the second lens has negative refractive power, and the object side surface and the image side surface of the second lens are respectively a convex surface and a concave surface; the third lens has positive refractive power, and the object side surface and the image side surface of the third lens are convex surfaces; the object side surface and the image side surface of the fourth lens are convex surfaces; the fifth lens has negative refractive power, and the object side surface and the image side surface of the fifth lens are concave surfaces; the sixth lens has positive refractive power, and the object side surface and the image side surface of the sixth lens are convex surfaces; the optical lens satisfies the following relational expression: 195 default; a FOVlt; 215deg, FNOlt, 215deg, FNOlt; and 1.7. According to the optical lens, the camera module and the terminal equipment, a wide angle can be achieved, and meanwhile good imaging quality can be achieved in a weak light environment.

The invention discloses an optical lens, an image capturing module and a terminal device, the optical lens comprises seven lenses with refractive power, the first lens has negative refractive power, the object side surface is a convex surface, and the image side surface is a concave surface; the second lens element with negative refractive power has a concave object-side surface and a convex image-side surface. The third lens element with positive refractive power has a convex object-side surface and a concave image-side surface, respectively. The fourth lens element with positive refractive power has a convex object-side surface and a convex image-side surface. The fifth lens element with refractive power has a convex object-side surface and a convex image-side surface. The sixth lens has negative refractive power, the object side surface and the image side surface are both concave surfaces, the seventh lens has positive refractive power, and the object side surface and the image side surface are respectively a convex surface and a concave surface; the optical lens satisfies the following relational expressions: FOV is greater than or equal to 130 deg and less than or equal to 140 deg, and TTL / IMGH is greater than or equal to 7.1 and less than or equal to 7.9. According to the optical lens, the image capturing module and the terminal equipment, the miniaturization design of the optical lens can be met, meanwhile, the large field angle can be achieved, and meanwhile the imaging quality can be improved.

The invention provides an optical lens, which sequentially comprises a first lens with negative focal power from an object side to an imaging surface along an optical axis, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with negative focal power from the object side to the imaging surface, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a concave surface, and the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a convex surface; and the object side surface of the seventh lens is a convex surface, and the image side surface of the seventh lens is a concave surface. According to the optical lens provided by the invention, through specific surface shape arrangement and reasonable focal power distribution, the lens has the advantage of excellent imaging quality.

The present invention provides an optical lens, which includes, from the object side to the imaging surface along the optical axis, a first lens with negative optical power, whose object side surface is convex and whose image side surface is concave; a second lens with optical power, whose object side surface is convex and whose image side surface is concave; a third lens with positive optical power, whose object side surface is concave and whose image side surface is convex; a fourth lens with negative optical power, whose object side surface is convex and whose image side surface is concave; a fifth lens with positive optical power, whose object side surface is convex and whose image side surface is convex; a sixth lens with optical power, whose object side surface is concave and whose image side surface is convex; a seventh lens with negative optical power, whose object side surface is convex and whose image side surface is concave near the optical axis. The optical lens of the present invention has one or more advantages such as a large field of view, large target surface imaging, and high imaging quality.

The invention relates to a method for characterizing microorganisms present in a biological sample, said method comprising acquiring a real-time holographic digital image of the sample, generating a focused image by using a digital model for reconstructing the focused image, and characterizing bacteria based on the focused image. According to the invention, a plurality of calibration objects are provided in the acquisition field of view prior to acquisition of the holographic image, these objects having pre-characterized dimensions and refractive indexes and selected shapes, such that the interference pattern of the objects can be calculated using an image forming model for integrating the optical aberrations of the acquisition device. The optical aberration is limited according to the interference pattern of the object and the calculated interference pattern before the computer generates the focused image, and a digital model used to reconstruct the focused image integrates the quantized optical aberration.

The invention discloses an optical lens and electronic equipment comprising the same. The optical lens sequentially comprises a first lens, a second lens, a third lens and a fourth lens, the second lens has negative focal power; the third lens has positive focal power; a fourth lens; a fifth lens, wherein the fifth lens has positive focal power; a sixth lens, wherein the sixth lens has negative focal power; a seventh lens, wherein the seventh lens has positive focal power; the curvature radius R3 of the object side face of the second lens and the curvature radius R4 of the image side face of the second lens meet the condition that R3 / R4 is larger than or equal to 0.512 and smaller than or equal to 0.7735. The curvature radius R13 of the object side face of the seventh lens and the curvature radius R14 of the image side face of the seventh lens meet the condition that R13 / R14 is larger than or equal to 0.4207 and smaller than or equal to 5.7963. The radius of curvature R3 of the object side surface of the second lens and the radius of curvature R4 of the image side surface of the second lens satisfy 0.02 < = (R3-R4) / (R3 + R4) < = 0.4. The optical lens can realize at least one of the beneficial effects of high resolution, low cost, miniaturization, small aperture, small CRA, good temperature performance and the like.

The present invention provides an optical lens, which includes, from the object side to the imaging surface along the optical axis: a first lens with negative optical power, whose object side surface is convex and whose image side surface is concave; a second lens with positive optical power, whose object side surface is convex; a third lens with positive optical power, whose object side surface is concave and whose image side surface is convex; a fourth lens with optical power, whose object side surface is convex and whose image side surface is concave; a fifth lens with positive optical power, whose object side surface is convex and whose image side surface is convex; a sixth lens with negative optical power, whose object side surface is concave and whose image side surface is concave; a seventh lens with positive optical power, whose object side surface is convex and whose image side surface is concave; an eighth lens with positive optical power, whose object side surface is convex and whose image side surface is convex. The optical lens of the present invention has one or more advantages such as ultra-wide angle, large aperture, and high imaging quality.

The application discloses a zoom lens and an imaging device, the zoom lens comprising a lens barrel, a light source and a lens group, the lens group comprising a fixed group, a zoom group, a compensation group and an image plane arranged in sequence from an object side to an image side, the zoom group and the compensation group moving along the optical axis direction, the compensation group being used for adjusting the imaging distance when the zoom group zooms, the fixed group comprising a first cylindrical lens and a second free-form surface lens, the first cylindrical lens shaping the light beam projected by the light source in the x direction, and the second free-form surface lens shaping the light beam projected by the first cylindrical lens in the y direction, so that the zoom lens has a strong shaping effect, can stretch the light rays in two directions, and maximally compresses the volume, and the free-form surface has high surface type freedom degree, can effectively correct the light aberration, and increases the definition around the final light spot, so as to solve the problems of poor aberration correction ability, large volume and low zoom ratio of the existing laser lens.

The utility model discloses a large-aperture half-frame lens, which belongs to the technical field of optical lenses and comprises a first lens group, a second lens group, a third lens group and a fourth lens group which are sequentially arranged from an object side to an image side along an optical axis. The focal lengths of all the lens groups meet the following conditional expressions: 1.2 < f (G1) / f (G2-G4) < 3.7; -3.8 < f (G3) / f (G2-G4) <-1.3; 1.6 < f (G1) / f < 4.8. According to the large-aperture half-frame lens, various aberrations of various wave bands are corrected, the central field of view and the edge field of view have enough resolution, the large-aperture half-frame lens has the advantages of being simple in structure, small in size and large in aperture, and the high resolution of imaging with the object distance from infinity to close distance can be achieved.

The present invention provides an optical lens, which includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens in order from the object side to the imaging surface along the optical axis. The first lens has a negative focal power, the object side surface is a convex surface, and the image side surface is a concave surface. The second lens has a negative focal power, the object side surface is a concave surface, and the image side surface is a concave surface. The third lens has a positive focal power, the object side surface is a convex surface, and the image side surface is a convex surface. The fourth lens has a negative focal power, the object side surface is a concave surface, and the image side surface is a convex surface. The fifth lens has a positive focal power, the object side surface is a convex surface, and the image side surface is a convex surface. The sixth lens has a negative focal power, the object side surface is a concave surface, and the image side surface is a concave surface. The seventh lens has a positive focal power, the object side surface is a convex surface, and the image side surface is a convex surface. The eighth lens has a positive focal power, the object side surface is a convex surface, and the image side surface is a concave surface. The optical lens of the present invention has one or more advantages such as ultra-wide angle, large aperture, and high imaging quality.

The utility model provides an imaging lens. The imaging lens sequentially comprises a first element, a second element and a third element from the first side to the second side, the first element is composed of a first substrate and a first imprinting structure which are connected with each other, the first imprinting structure is located on the second side of the first substrate, and the second element is composed of a second substrate and a second imprinting structure which are connected with each other. The second component is composed of a second substrate and a second imprint structure, the second imprint structure is located on the second side of the second substrate, the third component is composed of a third substrate and a third imprint structure which are connected, and the third imprint structure is located on the second side of the third substrate; the surface of the side, away from the first substrate, of the first imprinting structure, the surface of the side, away from the second substrate, of the second imprinting structure and the surface of the side, away from the third substrate, of the third imprinting structure are all curved surfaces. The imaging lens solves the problem that an imaging lens in the prior art is complex in structure.

An optical lens group is suitable for being applied to a projection lens. The optical lens group is used for generating a plurality of light beams from the plurality of lights emitted by the multi-light source generating unit through the optical lens group. The direction facing the multi-light-source generating unit is a light inlet side, and the opposite side is a light outlet side. The optical lens group sequentially comprises a first lens to a sixth lens from the light emitting side to the light incident side along the optical axis, and each of the first lens to the sixth lens comprises a light emitting surface facing the light emitting side and a light incident surface facing the light incident side. The first lens has a negative refractive index, the second lens has a positive refractive index, the fourth lens has a negative refractive index, the fifth lens has a positive refractive index, the circumferential area of the light-out surface of the fifth lens is a concave surface, and the circumferential area of the light-in surface of the sixth lens is a convex surface. The optical lens group only comprises the six lenses, and the projection lens and the optical lens group respectively meet the following conditional expressions: EDmax / EDmin is less than or equal to 2.100; v1 + V2 + V3 < = 140.

The present invention provides an optical lens, which sequentially includes, along the optical axis from the object side to the imaging surface: a first lens with a negative optical power, whose object side surface is concave and image side surface is concave; a second lens with a positive optical power, and the second lens is a meniscus lens; a third lens with an optical power, whose object side surface is convex and image side surface is concave; a fourth lens with a positive optical power, whose object side surface is convex and image side surface is convex; a fifth lens with a positive optical power, whose object side surface is concave and image side surface is convex; a sixth lens with a negative optical power, whose object side surface is convex near the optical axis and image side surface is concave near the optical axis; the curvature radius R3 of the object side surface of the second lens and the curvature radius of the image side surface of the second lens satisfy: 0.5 < R3 / R4 < 2; the curvature radius R1 of the object side surface of the first lens and the curvature radius R2 of the image side surface of the first lens satisfy: -0.9 < (R1 + R2) / (R1 - R2) < -0.1. The optical lens provided by the present invention can reasonably correct the overall aberration of the optical lens and improve the imaging quality of the optical lens.

The invention provides an optical lens group, an image capturing device and an electronic device. The optical lens group includes five lens elements including a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element from an object side to an image side. Each lens has an object-side surface facing the object side and an image-side surface facing the image side. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The fifth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. When specific conditions are satisfied, miniaturization of the optical lens group can be maintained, and sensitivity of the optical lens group can be reduced.

The present invention provides an optical lens, which sequentially includes, along the optical axis from the object side to the imaging surface: a first lens with positive optical power, whose object side is convex and whose image side is concave; a second lens with negative optical power, whose object side is convex near the optical axis and whose image side is concave; a third lens with positive optical power; a fourth lens with positive optical power, whose object side is concave and whose image side is convex; a fifth lens with negative optical power, whose object side is concave near the optical axis and whose image side is concave near the optical axis; wherein, the focal length f1 of the first lens and the focal length f2 of the second lens satisfy: -0.08 < f1 / f2 < 0; the maximum optical aperture SD1 of the first lens satisfies: 0.95 mm < SD1 < 1.1 mm. The optical lens provided by the present invention has an ultra-thin and small head size and a small overall length; it ensures the balance of the miniaturization of the head size of the lens and a large field of view. It can reasonably correct the overall aberration of the optical lens and improve the imaging quality of the optical lens.

The present invention provides an optical lens, which includes, from the object side to the imaging surface along the optical axis: a first lens with positive optical power, whose object side surface is convex, and whose image side surface is concave at the near optical axis; a second lens with positive optical power, whose object side surface is convex, and whose image side surface is concave; a third lens with positive optical power, whose object side surface is convex; a fourth lens with negative optical power, whose object side surface is concave; a fifth lens with positive optical power, whose object side surface is convex at the near optical axis, and whose image side surface is concave at the near optical axis; a sixth lens with positive optical power, whose object side surface is convex at the near optical axis; a seventh lens with negative optical power, whose object side surface is concave, and whose image side surface is concave at the near optical axis. The optical lens provided by the present invention has one or more advantages such as telephoto performance, large target surface, large aperture, and high pixel.

An optical lens, a camera module and a terminal device are provided, the optical lens has seven lenses with refractive power, the optical lens sequentially comprises a first lens to a seventh lens from an object side to an image side along an optical axis, the refractive power of the first lens is negative, negative, positive, positive, positive, negative and positive, and the object side surface and the image side surface of the first lens are respectively a convex surface and a concave surface near the optical axis; the object-side surface and the image-side surface of the second lens element are respectively a concave surface and a convex surface near the optical axis; the object-side surface and the image-side surface of the third lens element are respectively a convex surface and a concave surface near the optical axis; the fourth lens element has an object-side surface and an image-side surface being convex in a paraxial region. The fifth lens element has an object-side surface and an image-side surface being convex in a paraxial region. The sixth lens element has an object-side surface and an image-side surface being concave in a paraxial region. The seventh lens element has a convex object-side surface and a concave image-side surface in paraxial regions, respectively. The optical lens satisfies the following relational expressions: FOV is greater than or equal to 140 degrees and less than or equal to 150 degrees, 7.2 lt; tTL / Flt; and 7.6. The optical lens provided by the invention can realize miniaturization, has the characteristic of a large field angle, and improves the imaging quality of the optical lens.

The invention relates to a large-aperture projection lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens, a seventh lens and an eighth lens which are sequentially arranged along the direction of an optical axis, and is characterized in that the first lens, the fourth lens, the fifth lens, the seventh lens and the eighth lens have positive focal power; the second lens, the third lens and the sixth lens have negative focal power, and the sixth lens and the seventh lens are doublet lenses and have positive focal power; by reasonably setting the focal length and the entrance pupil diameter of the lens, the lens has the characteristics of large aperture, small size and low cost, does not defocus under the environmental condition of large temperature difference, and is stable in working performance, high in projection quality and wide in application range.

Disclosed are a large-aperture achromatic metalens, a metalens system, and an optical system. The large-aperture metalens includes: a substrate, which permits transmission of light of different wave bands, including visible light and infrared light; and a plurality of unit cells disposed in an array on a surface of the substrate. A center of each unit cell or each of the center and vertexes of each unit cell is provided with one nanostructure. A metalens surface is the surface of the substrate having the plurality of unit cells and is divided into a plurality of concentric circular regions in a radial direction, and for each circular region, incident broadband light is able to focus without chromatic aberration. The large-aperture achromatic metalens having the nanostructures is insensitive to polarization of incident light, and compared with existing common lenses, the large-aperture achromatic metalens is thin in thickness and light in weight as well as being able to correct chromatic aberrations of a conventional metalens to obtain an image with higher resolution.

The present invention provides an optical lens, which includes, from the object side to the imaging surface along the optical axis: a first lens with positive focal power, whose object side surface is convex and whose image side surface is concave; a second lens with negative focal power, whose object side surface is convex and whose image side surface is concave; a third lens with positive focal power, whose object side surface is convex and whose image side surface is concave; a fourth lens with negative focal power, whose object side surface is concave near the optical axis and whose image side surface is concave; a fifth lens with positive focal power, whose object side surface is convex and whose image side surface is concave; a sixth lens with negative focal power; a seventh lens with negative focal power, whose object side surface is concave and whose image side surface is convex; and an eighth lens with negative focal power, whose object side surface is concave. The optical lens provided by the present invention has one or more advantages such as telephoto performance, large target surface, large aperture, and short total length.

The present invention discloses a anamorphic lens, comprising a cylindrical lens and a spherical lens arranged in sequence from the object side to the image side. A first lens, a second lens and a third lens are arranged in sequence from the object side to the image side, wherein the first lens and the second lens are negative optical power cylindrical lenses, and the third lens is a positive optical power cylindrical lens. By utilizing the optical properties of the cylindrical lens, the incoming horizontal light is "compressed", while the light entering the vertical field of view remains unchanged, and then after comprehensive aberration correction of the light, the horizontal field of view angle is increased by 33%, thereby achieving 1.33X anamorphic shooting. At the same time, since the lens of this solution is smaller in size, lighter in weight, and relatively lower in cost, it can better meet the usage needs of most ordinary users.

This application discloses an optical lens, a camera module, and an electronic device that can meet the requirements of miniaturization and high imaging quality, and can stably image under complex lighting conditions. The optical lens has six refractive lenses, which are arranged sequentially from the object side to the image side along the optical axis: the first lens has negative refractive power, and its object side is concave near the optical axis, and its image side is concave near the optical axis; the second lens has positive refractive power, and its object side is convex near the optical axis, and its image side is convex near the optical axis; the third lens has positive refractive power, and its object side is convex near the optical axis; the fourth lens has positive refractive power, and its object side is convex near the optical axis, and its image side is convex near the optical axis; the fifth lens has negative refractive power, and its object side is concave near the optical axis; the sixth lens has negative refractive power, and its image side is concave near the optical axis; the optical lens satisfies the following relationship: 30°≤FOV≤40°, 1≤CT4 / CT5≤1.4.

The present invention provides an optical lens, which sequentially includes, along the optical axis from the object side to the imaging surface: a first lens with a positive optical power, whose object side is convex and whose image side is concave; a second lens with a negative optical power, whose object side is convex and whose image side is concave; a third lens with a positive optical power, whose object side is convex and whose image side is concave near the optical axis; a fourth lens with a positive optical power, whose object side is convex near the optical axis and whose image side is convex; a fifth lens with a negative optical power, whose object side is concave and whose image side is concave; a sixth lens with a positive optical power, whose object side is concave and whose image side is convex; a seventh lens with a negative optical power, whose object side is concave and whose image side is concave near the optical axis; the focal length f6 of the sixth lens and the focal length f7 of the seventh lens satisfy: -6 < f6 / f7 < -3.5. The optical lens provided by the present invention has one or more advantages such as long focal length performance, large target surface, large aperture, and high pixel.

The present invention provides an optical lens, which sequentially includes, along the optical axis from the object side to the imaging surface: a first lens with a negative optical power, whose object side is concave and whose image side is concave; a second lens with a positive optical power, whose object side is convex and whose image side is concave; a third lens with a positive optical power, whose object side is convex and whose image side is concave; a fourth lens with a positive optical power, whose object side is convex and whose image side is convex; a fifth lens with a positive optical power, whose object side is concave and whose image side is convex; a sixth lens with a negative optical power, whose image side is concave near the optical axis; wherein, the maximum field of view FOV of the optical lens and the aperture value Fno of the optical lens satisfy: 27° < FOV / Fno < 34°. The optical lens provided by the present invention can reasonably correct the overall aberration of the optical lens and improve the imaging quality of the optical lens.