Abstract: The present disclosure discloses an optical imaging system including, sequentially 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, a sixth lens and a seventh lens, each of which has refractive power. Each of the first lens, the third lens and the fourth lens has positive refractive power. Half of a diagonal length ImgH on an imaging plane of the optical imaging system satisfies ImgH>5 mm. A total effective focal length f of the optical imaging system and an effective focal length f3 of the third lens satisfy 2.0<f3/f<3.0.

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

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system, wherein the optical imaging system satisfies 1<|f134567?f|/f, where f134567 is a composite focal length of the first to seventh lenses calculated with an index of refraction of the second lens set to 1.0, f is an overall focal length of the optical imaging system, and f134567 and f are expressed in a same unit of measurement.

Abstract: An optical photographing assembly includes, in order from an object side to an image side along an optical axis, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element has positive refractive power. The third lens element has at least one of an object-side surface and an image-side surface being aspheric. The fourth lens element has at least one of an object-side surface and an image-side surface being aspheric. The fifth lens element has at least one of an object-side surface and an image-side surface being aspheric, wherein at least one of the object-side surface and the image-side surface of the fifth lens element includes at least one inflection point.

Abstract: Provided is a camera optical lens, which includes a first lens having a negative refractive power, a second lens having a positive refractive power, a third lens having a positive refractive power, a fourth lens having a negative refractive power, a fifth lens having a positive refractive power, and a sixth lens having a negative refractive power. The camera optical lens satisfies ?10.00?f1/f??4.00, 0.40?f5/f?0.70, and 8.00?d5/d6?15.00, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; f5 denotes a focal length of the fifth lens; d5 denotes an on-axis thickness of the third lens; and d6 denotes an on-axis distance from an image side surface of the third lens to an object side surface of the fourth lens. The camera optical lens has good optical performance and satisfies design requirements for ultra-thin, wide-angle lenses having large apertures.

Abstract: An image capturing lens assembly includes seven lens elements, which are, in order from an object side to an image side, 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. The fifth lens element with positive refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The sixth lens element has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The seventh lens element has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, and the image-side surface thereof includes at least one convex shape in an off-axis region thereof.

Abstract: A method according to the present disclosure includes providing a substrate, depositing an underlayer over the substrate, depositing a photoresist layer over the underlayer, exposing a portion of the photoresist layer and a portion of the underlayer to a radiation source according to a pattern, baking the photoresist layer and underlayer, and developing the exposed portion of the photoresist layer to transfer the pattern to the photoresist layer. The underlayer includes a polymer backbone, a polarity switchable group, a cross-linkable group bonded to the polymer backbone, and photoacid generator. The polarity switchable group includes a first end group bonded to the polymer backbone, a second end group including fluorine, and an acid labile group bonded between the first end group and the second end group. The exposing decomposes the photoacid generator to generate an acidity moiety that detaches the second end group from the polymer backbone during the baking.

Abstract: A lens module may include a first lens having positive refractive power, a second lens having refractive power, a third lens having positive refractive power, a fourth lens having refractive power, a fifth lens having refractive power, a sixth lens having refractive power, and a seventh lens having negative refractive power. An inflection point may be formed on an image-side surface of the sixth lens. A turning point may be formed on an image-side surface of the seventh lens. The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are disposed in a sequential order from the first lens to the seventh lens.

Abstract: A photographing optical lens system includes seven lens elements which are, in order from an object side to an image side along an optical path: 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. Each of the seven lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The object-side surface of the sixth lens element is concave in a paraxial region thereof, and the image-side surface of the sixth lens element is convex in a paraxial region thereof. At least one of the object-side surface and the image-side surface of at least one lens element of the photographing optical lens system has at least one inflection.

Abstract: A camera optical lens is provided. The camera optical lens includes, from an object side to an image side, a first lens, a second lens having a negative refractive power, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens. The camera optical lens satisfies following conditions: 0.60?f1/f?1.80; and 1.50?d11/d12?8.00, where f denotes a focal length of the camera optical lens, f1 denotes a focal length of the first lens, d11 denotes an on-axis thickness of the sixth lens, and d12 denotes an on-axis distance from an image side surface of the sixth lens to an object side surface of the seventh lens. The camera optical lens according to the present disclosure satisfies design requirements for large-aperture, wide-angle, and ultra-thin lenses while achieving good optical performance.

Abstract: An electronic device includes at least one optical lens system. The optical lens system includes five lens elements, and the five lens elements are, in order from an outside to an inside, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. At least one of outside surfaces and inside surfaces of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element is aspheric and includes at least one inflection point.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens having negative refractive power, a fifth lens having positive refractive power, a sixth lens having a convex image-side surface, and a seventh lens, disposed sequentially from an object side. The optical imaging system satisfies ?5.0<f2/f<?2.0, where f is a focal length of the optical imaging system and f2 is a focal length of the second lens. An F No. of the optical imaging system is less than 1.7.

Abstract: The present invention provides an optical imaging lens. The optical imaging lens comprises seven 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, the optical imaging lens may shorten system length and enlarge field of view and aperture size.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side with spaces in between each of the lenses. The first lens has one aspheric surface. The third lens has one aspheric surface. The fourth lens has one aspheric surface. The fifth lens has two aspheric surfaces and the surface thereof on the object side is convex toward the object side near an optical axis thereof. The sixth lens has two aspheric surfaces and the surface thereof on the image plane side is convex toward the image plane side near an optical axis thereof. The second lens and the third lens have a specific focal length. The second lens and the fifth lens have a specific Abbe's number.

Abstract: An optical system includes a first lens having negative refractive power and having two concave surfaces, a second lens having positive refractive power, a third lens having refractive power, a fourth lens having refractive power, a fifth lens having refractive power, a sixth lens having refractive power, and a seventh lens having refractive power. The first to seventh lenses are sequentially disposed from an object side.

Abstract: The present disclosure discloses an imaging lens assembly. Sequentially from an object side to an image side along an optical axis, the imaging lens assembly includes a first lens having a positive refractive power; a second lens having a negative refractive power, and both an object-side surface and an image-side surface thereof being concave surfaces; a third lens having a positive refractive power, and an image-side surface thereof being a convex surface; a fourth lens having a negative refractive power, and an object-side surface thereof being a concave surface; a fifth lens having a refractive power; and a sixth lens having a refractive power. A total effective focal length f of the imaging lens assembly and half of a diagonal length ImgH of an effective pixel area on an imaging plane of the imaging lens assembly satisfy 2.0?f/ImgH?3.0.

Abstract: An imaging lens includes a first lens; a second lens; a third lens having negative refractive power; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The first lens is formed in a meniscus shape at a paraxial region thereof. The sixth lens is formed in a shape so that a surface thereof on the object side is convex at a paraxial region thereof. The fourth lens and the fifth lens have a specific composite focal length. The sixth lens and the seventh lens have a specific composite focal length.

Abstract: An imaging lens includes a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The sixth lens is formed in a shape so that a surface thereof on the image plane side is concave at a paraxial region thereof. The seventh lens is formed in a shape so that a surface thereof on the image plane side is aspheric. The first lens and the second lens have a specific composite focal length. The third lens have a specific focal length. The fourth lens and the fifth lens have a specific composite focal length. The sixth lens and the seventh lens have a specific composite focal length.

Abstract: Disclosed is an apparatus for measuring subjective ocular refraction including a display device configured to display a least one optotype and a refractive optical system arranged between an eye of a viewer and the display device, the refractive optical system having an optical power that can be varied according to a determined minimum step. The display device further includes a unit for varying optical power designed to generate a variation in the spherical and/or cylindrical optical power, such that the display device and the refractive optical system form a first image of the optotype with a first total optical power and, respectively, a second image of the optotype with a second total optical power, the variation in optical power between the first total optical power and the second total optical power being less than the determined minimum step.

Abstract: Provided is a camera optical lens including, sequentially from an object side to an image side: a first lens having a negative refractive power; a second lens; a third lens having a positive refractive power; a fourth lens having a negative refractive power; a fifth lens; a sixth lens having a positive refractive power; and a seventh lens having a negative refractive power. At least one of the first to seventh lenses comprises a free-form surface. The camera optical lens satisfies following conditions: ?5.00?f1/f??1.00; and 1.50?d1/d2?7.00. The camera optical lens can achieve high optical performance while satisfying design requirements for ultra-thin, wide-angle lenses.

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 refractive power; a second lens having refractive power; and a third lens having refractive power. A center thickness CT1 of the first lens along the optical axis and a maximum effective radius DT11 of an object-side surface of the first lens satisfy: 1.0<CT1/DT11<2.0.

Abstract: A fixed focal imaging lens includes two lens sets and an aperture stop. One of the two lens sets is disposed between a magnified side and the aperture stop. The other one of the two lens sets is disposed between the aperture stop and a minified side. The lens set disposed between the magnified side and the aperture stop includes an aspheric lens and a compound lens, wherein the aspheric lens is a lens closest to the magnified side in the lens set, and the compound lens includes a plurality of lenses combined together. The lens set disposed between the aperture stop and the minified side includes a compound lens and an aspheric lens, wherein the compound lens includes a plurality of lenses combined together, and the aspheric lens is a lens closest to the minified side in the lens set.

Abstract: An imaging lens system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens disposed in order from an object side, and a stop disposed on an image side of one of the first to sixth lenses, and one or more of the second to seventh lenses, disposed on an image side of the stop, each has a positive refractive power and a negative refractive index temperature coefficient.

Abstract: A photographing optical lens assembly includes, in order from an object side to an image side, 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. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The second lens element has negative refractive power. The sixth lens element has at least one of an object-side surface and an image-side surface being aspheric, wherein at least one of the object-side surface and the image-side surface of the sixth lens element comprises at least one inflection point. The seventh lens element has an object-side surface and an image-side surface being both aspheric.

Abstract: An optical imaging lens assembly includes, in order from an object side to an image side, 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. The second lens element has positive refractive power. The third lens element has positive refractive power. The fourth lens element has positive refractive power. The fifth lens element has positive refractive power. The sixth lens element has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface of the sixth lens element has at least one inflection point. The optical imaging lens assembly has a total of six lens elements.

Abstract: An optical imaging lens may include eight lens elements positioned in an order from an object side to an image side. Through designing concave and/or convex surfaces of the eight lens elements, the optical imaging lens may provide improved imaging quality and optical characteristics while the total length of the optical imaging lens may be shortened.

Abstract: Some embodiments of the disclosure provide an optical imaging lens assembly. From an object side to an image side along an optical axis, the optical imaging lens assembly sequentially includes: a first lens having a refractive power; a second lens having a refractive power, and an object-side surface of the second lens is a convex surface, and an image-side surface of the second lens is a concave surface; a third lens having a refractive power; a fourth lens having a refractive power; a fifth lens having a refractive power; a sixth lens having a positive refractive power, an object-side surface of the sixth lens is a convex surface, and an image-side surface of the sixth lens is a convex surface; and a seventh lens having a negative refractive power, an object-side surface of the seventh lens is a concave surface, and an image-side surface is a concave surface.

Abstract: An optical imaging lens including a first lens element to an eighth lens element arranged in sequence from an object side to an image side along an optical axis is provided. A periphery region of the image-side surface of the first lens element is concave. An optical axis region of the object-side surface of the fourth lens element is convex. The sixth lens element has positive refracting power. An optical axis region of the object-side surface of the seventh lens element is convex, and an optical axis region of the image-side surface of the seventh lens element is concave.

Abstract: An optical imaging lens may include a first, a second, a third, a fourth, a fifth, a sixth, a seventh, and an eighth lens elements positioned in an order from an object side to an image side. Through designing concave and/or convex surfaces of the eight lens elements, the improved optical imaging lens may provide better imaging quality while the system length may be shortened, the F-number may be reduced, the field of view may be extended, and the image height may be increased.

Abstract: An optical imaging lens may include a first, a second, a third, a fourth, a fifth, a sixth, a seventh, and an eighth lens elements positioned in an order from an object side to an image side. Through designing concave and/or convex surfaces of the eight lens elements, the improved optical imaging lens may provide better imaging quality while the system length of the lens may be shortened, the F-number may be reduced, the field of view may be extended, and the image height may be increased.

Abstract: An optical imaging lens including a first to a seventh lens elements 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. An optical axis region of the image-side surface of the first lens element is concave. An optical axis region of the object-side surface of the third lens element is concave. The fourth lens element has positive refracting power and an optical axis region of the image-side surface of the fourth lens element is concave. An optical axis region of the image-side surface of the fifth lens element is concave. Furthermore, other optical imaging lenses are also provided.

Abstract: A photographing optical lens system includes seven lens elements, the seven lens elements being, in order from an object side to an image side: 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. Each of the seven lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one lens surface of the seven lens elements has at least one inflection point thereon.

Abstract: A photographing lens assembly includes a total of eight lens elements which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The second lens element has negative refractive power. The eighth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof. At least one lens element of the photographing lens assembly has at least one lens surface having at least one inflection point.

Abstract: An optical imaging lens includes a first, a second, a third, a fourth, a fifth, a sixth, a seventh and an eighth lens elements from an object side to an image side in order along an optical axis. The eight lens elements are the only lens elements having refracting power in the optical imaging lens. The optical imaging lens satisfies: (T1+T2+T3)/(G23+G34)?2.700, wherein T1 is a thickness of the first lens element along the optical axis, T2 is a thickness of the second lens element along the optical axis, 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 G34 is an air gap from the third lens element to the fourth lens element along the optical axis.

Abstract: The present disclosure discloses an optical imaging lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens having refractive power; a second lens having refractive power; a third lens having negative refractive power; a fourth lens having refractive power and a convex object-side surface; a fifth lens having refractive power and a concave object-side surface; a sixth lens having refractive power; a seventh lens having refractive power; and an eighth lens having refractive power. A total effective focal length f of the optical imaging lens assembly and half of a maximal field-of-view Semi-FOV of the optical imaging lens assembly satisfy: f*tan(Semi-FOV)>5.5 mm. A total effective focal length f of the optical imaging lens assembly and an effective focal length f1 of the first lens satisfy: 0.5<f/f1<1.5.

Abstract: The present invention relates to the field of optical lenses and provides a camera optical lens sequentially including, from an object side to an image side: a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a negative refractive power; a fourth lens; a fifth lens; a sixth lens having a positive refractive power; and a seventh lens having a negative refractive power. The camera optical lens satisfies following conditions: 2.80?v1/v2?4.50; and ?10.00?f3/f??3.00, where f denotes a focal length of the camera optical lens; f3 denotes a focal length of the third lens; and v1 and v2 denote abbe numbers of the first and second lenses, respectively. The camera optical lens according to the present invention can achieve high optical performance while satisfying design requirements for ultra-thin, wide-angle lenses having large apertures.

Abstract: The imaging lens includes, as lens groups, only a positive first lens group, a positive second lens group, and a negative third lens group in order from the object side. An aperture stop is disposed between a lens surface closest to the image side in the first lens group and a lens surface closest to the object side in the third lens group. During focusing, the first lens group and the third lens group do not move, and the second lens group moves. The first lens group consists of a negative lens and a positive lens in order from the object side. The third lens group has a negative lens and a positive lens in order from the object side.

Abstract: An imaging lens includes a first lens; a second lens having positive refractive power; a third lens; a fourth lens; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side with spaces in between each of the lenses. The second lens is formed in a shape of a meniscus lens near an optical axis thereof. The third lens has at least one aspheric surface. The fourth lens has at least one aspheric surface. The fifth lens is formed in a shape so that a surface thereof on the object side is convex toward the object side near an optical axis thereof. The sixth lens has two aspheric surfaces and the surface on the image plane side is convex toward the image plane side near an optical axis thereof. The second lens has a specific Abbe's number.

Abstract: A lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, all of which are arranged in order from an object side to an image side along an optical axis. The first lens is with positive refractive power and includes a convex surface facing the object side. The second lens is with negative refractive power and includes a concave surface facing the image side. The third lens is with refractive power and includes a convex surface facing the image side. The fourth, fifth, and sixth lenses are with refractive power. The lens assembly satisfies: 2 mm<f5+f6<35 mm, wherein f5 is an effective focal length of the fifth lens and f6 is an effective focal length of the sixth lens.

Abstract: An optical photographing assembly includes, in order from an object side to an image side along an optical axis, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element has positive refractive power. The third lens element has at least one of an object-side surface and an image-side surface being aspheric. The fourth lens element has at least one of an object-side surface and an image-side surface being aspheric. The fifth lens element has at least one of an object-side surface and an image-side surface being aspheric, wherein at least one of the object-side surface and the image-side surface of the fifth lens element includes at least one inflection point.

Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of wide field of view, low profile and low F-number. An imaging lens comprises, in order from an object side to an image side, a first lens with positive or negative refractive power in a paraxial region, a second lens with positive or negative refractive power in a paraxial region, a third lens with positive refractive power in a paraxial region, a fourth lens with negative refractive power in a paraxial region, a fifth lens with positive refractive power in a paraxial region, a sixth lens with positive refractive power in a paraxial region, and a seventh lens with negative refractive power.

Abstract: A lens module includes first to seventh lenses each having refractive power and sequentially disposed in numerical order from the first lens to the seventh lens starting from an object side of the lens module, wherein each of the first and second lenses has a meniscus shape and an image-side surface that is convex, and the seventh lens has one or more inflection points on an image-side surface thereof.

Abstract: The present invention provides an optical imaging lens. The optical imaging lens comprises seven lens elements positioned in an order from an object side to an image side. Through controlling convex or concave shape of surfaces of the lens elements and parameters to meet (EFL+ALT)/D67?4.800, the optical imaging lens may shorten system length with a good imaging quality.

Abstract: The present disclosure discloses an optical imaging lens assembly including, sequentially 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, a sixth lens, a seventh lens and an eighth lens. The first lens has a positive refractive power; the second lens has a negative refractive power; the third lens has a positive or negative refractive power; the fourth lens has a positive refractive power, an object-side surface thereof is a convex surface, and an image-side surface thereof is a convex surface; the fifth lens has a positive or negative refractive power, and an image-side surface thereof is a concave surface; the sixth lens has a positive or negative refractive power; the seventh lens has a positive refractive power; and the eighth lens has a negative refractive power.

Abstract: A compact folded projection system is described that includes a laser light source, a folded lens system comprising a lens stack including two or more refractive lenses and a light folding element (e.g., a prism), and a diffractive beam splitter that includes at least one diffractive surface. The light folding element provides a “folded” optical axis for the lens system to reduce the Z-height of the projection system, for example to within a range of 1.7 to 4 millimeters (e.g., 2 millimeters in some implementations). The laser light source emits light that is refracted by the lens stack to the folding element. The folding element redirects the light to the beam splitter which replicates the light into N×M duplications or tiles to thus generate a larger field of view (FOV) than the internal FOV of the lens system.

Abstract: A nanocomposite-ink refractive gradient optic with variable focus optic comprising a first optical-element, a second optical-element, each the optical-elements comprised of a cured nanocomposite-ink wherein the first and second optical-element have a cubic volumetric gradient complex optical index such that when arranged in tandem along an optical axis the optical power varies based on linear translation with respect to another.

Abstract: An imaging lens which uses a larger number of constituent lenses for higher performance and features a low F-value, low-profile design and a wide field of view. Designed for a solid-state image sensor, the imaging lens includes constituent lenses arranged in order from an object side to an image side: a first positive refractive power lens; a second negative refractive power lens; a third lens; a fourth lens; a fifth lens; a sixth lens having a concave image-side surface near an optical axis; and a seventh negative refractive power lens.

Abstract: A lens module includes a first lens, a second lens, and a third lens comprising a convex object-side surface and a convex image-side surface. The lens module also includes a fourth lens including a concave object-side surface and a concave image-side surface, a fifth lens including a concave object-side surface, and a sixth lens including an inflection point formed on an image-side surface thereof. The first to sixth lenses are sequentially disposed from an object side to an image side.

Abstract: An optical imaging lens includes a first lens element to a seventh lens element, and each lens element has an object-side surface and an image-side surface. The second lens element has negative refracting power, a periphery region of the object-side surface of the third lens element is concave, an optical axis region of the image-side surface of the third lens element is convex, the fifth lens element has positive refracting power, an optical axis region of the image-side surface of the fifth lens element is convex, an optical axis region of the image-side surface of the sixth lens element is concave, an optical axis region of the image-side surface of the seventh lens element is concave, a periphery region of the image-side surface of the seventh lens element is convex. The optical imaging lens satisfies the following conditions: D11t42/AAG37?1.700 and D11t31/G34?12.000.

Abstract: The present disclosure discloses an optical imaging system including, sequentially 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, a sixth lens and a seventh lens, each of which has refractive power. An object-side surface of the first lens is concave, and an image-side surface thereof is convex; the sixth lens has a positive refractive power; and the seventh lens has a negative refractive power, and an object-side surface thereof is convex. Half of a diagonal length ImgH of an effective pixel area on an imaging plane of the optical imaging system satisfies 6 mm<ImgH<7 mm; and a total effective focal length f of the optical imaging system and an effective focal length f6 of the sixth lens satisfy 0.22?f/f6<1.