CN115128767A

CN115128767A - Optical imaging lens

Info

Publication number: CN115128767A
Application number: CN202210894450.4A
Authority: CN
Inventors: 胡亚斌; 赵烈烽; 戴付建
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2022-09-30
Anticipated expiration: 2042-07-28
Also published as: CN115128767B

Abstract

The application discloses optical imaging lens, this optical imaging lens includes along optical axis from the thing side to image side in proper order: a first lens, a second lens, a third lens, a fourth lens, and a fifth lens; wherein the second lens has a positive focal power; at least two lenses of the first lens to the fifth lens are glass lenses; the effective focal length f of the optical imaging lens meets the following conditions: 15mm < f <18 mm; and the effective focal length f of the optical imaging lens and the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis satisfy the following conditions: 1< f/TTL < 1.2.

Description

Optical imaging lens

Technical Field

The application relates to the field of optical elements, in particular to an optical imaging lens.

Background

In recent years, with the rapid development of smart phones, the consumer market has also made wider demands on the optical performance and the diversity of shooting functions of imaging lenses of mobile phones. The telephoto lens has the characteristics of long focal length and high magnification, and the telephoto local magnification effect of the telephoto lens is better for telephoto shooting. The glass lens has better reliability than plastic, but the glass material has high price, the processing and assembling process is complex, the yield is not easy to control, the weight of the lens is reduced by adopting the mixing and matching of the plastic lens and the glass lens, the length of the lens is effectively controlled, and the manufacturing cost is reduced. In order to enable consumers to have better photographing experience, the design of the five-piece glass-plastic hybrid optical imaging lens with the long focal length and the telephoto effect has important practical significance.

Disclosure of Invention

The present application provides an optical imaging lens, which includes, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, and a fifth lens; wherein the second lens has a positive focal power; at least two lenses of the first lens to the fifth lens are glass lenses; the effective focal length f of the optical imaging lens meets the following conditions: 15mm < f <18 mm; and the effective focal length f of the optical imaging lens and the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis satisfy the following conditions: 1< f/TTL < 1.2.

In one embodiment, ImgH which is half of the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens, TTL which is the distance on the optical axis from the object side surface of the first lens to the imaging plane of the optical imaging lens, and the maximum half field angle Semi-FOV of the optical imaging lens satisfy: 0.8< TTL × tan (Semi-FOV)/ImgH <1.

In one embodiment, a distance BFL on the optical axis from the image side surface of the fifth lens element to the image surface of the optical imaging lens, an effective focal length f of the optical imaging lens, and an aperture value fno of the optical imaging lens satisfy: f/fno/BFL is more than 0.5 and less than or equal to 0.6.

In one embodiment, the half length ImgH of the diagonal line of the effective pixel area on the imaging surface of the optical imaging lens, the aperture value fno of the optical imaging lens and the effective focal length f of the optical imaging lens satisfy: 0.6< ImgH × fno/f < 0.8.

In one embodiment, the effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens and the effective focal length f3 of the third lens satisfy: 0.7< (f1+ f2+ f3)/f < 1.2.

In one embodiment, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the effective focal length f3 of the third lens satisfy: 1< (f2-f3)/f1< 2.

In one embodiment, the first to fifth lenses respectively have a center thickness on an optical axis, and any two adjacent lenses of the first to fifth lenses have an air space on the optical axis, a maximum value CTmax of the center thickness, a minimum value CTmin of the center thickness, a maximum value ATmax of the air space, and a minimum value ATmin of the air space satisfy: 0.6< (CTmin + CTmax)/(ATmin + ATmax) < 1.1.

In one embodiment, the first to fifth lenses each have a center thickness on an optical axis, and any adjacent two of the first to fifth lenses have an air space on the optical axis, a sum Σ CT of the center thicknesses and a sum Σ AT of the air spaces satisfy: 0.6< ∑ AT/Σ CT <1.

In one embodiment, a central thickness CT3 of the third lens on the optical axis, a central thickness CT4 of the fourth lens on the optical axis, a central thickness CT5 of the fifth lens on the optical axis, an air space T34 of the third lens and the fourth lens on the optical axis, and an air space T45 of the fourth lens and the fifth lens on the optical axis satisfy: 0.7< (CT3+ CT4+ CT5)/(T34+ T45) < 1.3.

In one embodiment, a distance BFL on the optical axis from the image-side surface of the fifth lens element to the imaging surface of the optical imaging lens and a distance TD on the optical axis from the object-side surface of the first lens element to the image-side surface of the fifth lens element satisfy: 0.8< TD/BFL < 1.1.

In one embodiment, any adjacent two lenses of the first to fifth lenses have an air space on the optical axis, a sum Σ AT of the air spaces, an air space T34 on the optical axis of the third and fourth lenses, and an air space T45 on the optical axis of the fourth and fifth lenses satisfy: 0.9< (T34+ T45)/. E AT <1.

In one embodiment, the central thickness CT3 of the third lens on the optical axis and the effective radius DT32 of the image side surface of the third lens satisfy: 0.6< CT3/DT32< 1.4.

In one embodiment, the effective radius DT11 of the object-side surface of the first lens, the effective radius DT31 of the object-side surface of the third lens and the effective radius DT51 of the object-side surface of the fifth lens satisfy: less than or equal to 0.1 | (DT11/DT31) - (DT51/DT31) | < 0.3.

In one embodiment, the first to fifth lenses respectively have edge thicknesses, the first to fifth lenses respectively have center thicknesses on the optical axis, and a maximum value ETmax of the edge thicknesses and a maximum value CTmax of the center thicknesses satisfy: ETmax/CTmax is more than or equal to 0.9 and less than 1.5.

In one embodiment, the edge thickness ET3 of the third lens, the edge thickness ET5 of the fifth lens, the center thickness CT3 of the third lens on the optical axis, and the center thickness CT5 of the fifth lens on the optical axis satisfy: 1< (ET3+ ET5)/(CT3+ CT5) < 1.2.

In one embodiment, the first to fifth lenses each have an edge thickness, and a sum Σ ET of the edge thicknesses, ET3 of the third lens, and ET5 of the fifth lens satisfy: 0.6< (ET3+ ET 5)/[ sigma ] ET < 0.8.

In one embodiment, the first to fifth lenses include a spherical lens and an aspherical lens.

In one embodiment, the first lens has a positive optical power and the third lens has a negative optical power.

In one embodiment, the object-side surface of the first lens element is convex, the object-side surface of the second lens element is convex, the image-side surface of the third lens element is concave, and the object-side surface of the fourth lens element is concave.

The utility model provides an optical imaging lens adopts five lens, and effective focal length and optics overall length through control optical imaging lens are in reasonable scope for optical imaging lens has the long burnt characteristic, guarantees simultaneously that effective focal length is greater than the total long purpose of taking a photograph of in order to reach of optics overall length, and in addition, the optical imaging lens of this application adopts the glass to mould the lens of mixing under the condition that satisfies long burnt telephoto, can improve the stability under the high low temperature environment.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 shows a schematic structural view of an optical imaging lens according to embodiment 1 of the present application;

fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 1;

fig. 3 is a schematic structural view showing an optical imaging lens according to embodiment 2 of the present application;

fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 2;

fig. 5 is a schematic structural view showing an optical imaging lens according to embodiment 3 of the present application;

fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 3;

fig. 7 is a schematic structural view showing an optical imaging lens according to embodiment 4 of the present application;

fig. 8A to 8D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve of the optical imaging lens of embodiment 4, respectively;

fig. 9 is a schematic structural view showing an optical imaging lens according to embodiment 5 of the present application; and

fig. 10A to 10D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 5.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of the present application.

In the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.

Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The features, principles, and other aspects of the present application are described in detail below.

An optical imaging lens according to an exemplary embodiment of the present application may include five lenses having optical powers, which are a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, respectively. The five lenses are arranged along the optical axis in sequence from the object side to the image side. Any two adjacent lenses of the first lens to the fifth lens can have a spacing distance therebetween.

In an exemplary embodiment, the first lens may have a positive or negative optical power; the second lens may have a positive optical power; the third lens may have a positive optical power or a negative optical power; the fourth lens may have a positive power or a negative power; and the fifth lens may have a positive power or a negative power. In an exemplary embodiment, the object-side surface of the first lens element is convex, the object-side surface of the second lens element is convex, the image-side surface of the third lens element is concave, and the object-side surface of the fourth lens element is concave. The surface type arrangement of the optical imaging lens is beneficial to more reasonable distribution of the focal power of the optical imaging lens, and is of great importance for improving the aberration correction capability of the optical imaging lens and reducing the sensitivity of the optical imaging lens.

In an exemplary embodiment, an optical imaging lens according to an exemplary embodiment of the present application further includes a stop disposed on an object side surface of the first lens.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 15mm < f <18mm and 1< f/TTL <1.2, wherein f is the effective focal length of the optical imaging lens, and TTL is the distance from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis. More specifically, f and TTL further can satisfy: 17.29mm < f <17.69mm and 1.02< f/TTL < 1.12. The requirements that f is more than 17.29mm and less than 17.69mm and f/TTL is more than 1.02 and less than 1.12 are met, the purpose of telephoto is favorably achieved by ensuring that the effective focal length is more than the total optical length, and the optical imaging lens is favorably enabled to achieve the effect of amplifying the 5 multiplied by equivalent focal length by controlling the effective focal length and the total optical length of the optical imaging lens within a reasonable range.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.8< TTL × tan (Semi-FOV)/ImgH <1, where ImgH is half of a diagonal length of an effective pixel area on an imaging surface of the optical imaging lens, TTL is a distance on an optical axis from an object-side surface of the first lens to the imaging surface of the optical imaging lens, and Semi-FOV is a maximum half field angle of the optical imaging lens. More specifically, ImgH, TTL and Semi-FOV further satisfy: 0.88< TTL × tan (Semi-FOV)/ImgH < 0.96. The optical imaging lens meets the requirement that 0.8< TTL multiplied by tan (Semi-FOV)/ImgH <1, is favorable for restraining the total optical length and the field angle of the optical imaging lens in a reasonable range under the condition of fixing an imaging target surface, can reduce the volume of the module by restraining the total optical length TTL, and is favorable for adjusting the balance of the field angle to off-axis astigmatism and field curvature.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: f/fno/BFL is more than 0.5 and less than or equal to 0.6, wherein BFL is the distance between the image side surface of the fifth lens and the imaging surface of the optical imaging lens on the optical axis, f is the effective focal length of the optical imaging lens, and fno is the aperture value of the optical imaging lens. More specifically, f, fno and BFL may further satisfy: f/fno/BFL is more than 0.52 and less than or equal to 0.6. The optical imaging lens meets the condition that f/fno/BFL is more than 0.5 and less than or equal to 0.6, the size relation between the effective focal length and the aperture and the size relation between the effective focal length and the aperture are favorably controlled, the BFL is long enough to meet the space size of other components in the module, and meanwhile, the light transmission aperture of the optical imaging lens is ensured to be in a required range.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.6< ImgH × fno/f <0.8, where ImgH is half of the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens, fno is the aperture value of the optical imaging lens, and f is the effective focal length of the optical imaging lens. More specifically, ImgH, fno, and f further satisfy: 0.63< ImgH × fno/f < 0.79. The requirement that 0.6< ImgH x fno/f <0.8 is met, the size of the aperture and the effective focal length of the optical imaging lens is restrained under the condition that the imaging surface is fixed, and the light flux of the optical imaging lens is ensured to be in the required range and the size of the magnification.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.7< (f1+ f2+ f3)/f <1.2, wherein f is an effective focal length of the optical imaging lens, f1 is an effective focal length of the first lens, f2 is an effective focal length of the second lens, and f3 is an effective focal length of the third lens. More specifically, f1, f2, f3 and f further satisfy: 0.76< (f1+ f2+ f3)/f < 1.11. The optical power of the first lens, the second lens and the third lens can be controlled, and the high-order spherical aberration and the coma aberration of the off-axis field of view under the large aperture can be reduced.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1< (f2-f3)/f1<2, wherein f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, and f3 is the effective focal length of the third lens. More specifically, f1, f2, and f3 may further satisfy: 1.05< (f2-f3)/f1< 1.83. Satisfying 1< (f2-f3)/f1<2 is beneficial to balancing the primary spherical aberration of the optical imaging lens and further correcting the optical distortion of the optical imaging lens.

In an exemplary embodiment, the first lens to the fifth lens each have a center thickness on an optical axis, and any adjacent two lenses of the first lens to the fifth lens have an air space on the optical axis, the optical imaging lens according to the present application may satisfy: 0.6< (CTmin + CTmax)/(ATmin + ATmax) <1.1, where CTmax is the maximum value of the center thickness, CTmin is the minimum value of the center thickness, ATmax is the maximum value of the air space, and ATmin is the minimum value of the air space. More specifically, CTmin, CTmax, ATmin, and ATmax may further satisfy: 0.68< (CTmin + CTmax)/(ATmin + ATmax) < 1.03. The method meets the requirement of 0.6< (CTmin + CTmax)/(ATmin + ATmax) <1.1, and is beneficial to reducing the meridional astigmatism of the off-axis field of view.

In an exemplary embodiment, the first lens to the fifth lens each have a center thickness on an optical axis, and any adjacent two lenses of the first lens to the fifth lens have an air space on the optical axis, the optical imaging lens according to the present application may satisfy: 0.6< ∑ AT/Σ CT <1, where Σ CT is the sum of the center thicknesses and Σ AT is the sum of the air spaces. More specifically, Σ AT and Σ CT further can satisfy: 0.64< ∑ AT/Σ CT < 0.97. The optical lens meets the requirement of 0.6< ∑ AT/sigma CT <1, which is beneficial to ensuring the bearing space between adjacent lenses and reducing the deflection of partial lens surface light rays so as to reduce tolerance sensitivity.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.7< (CT3+ CT4+ CT5)/(T34+ T45) <1.3, wherein CT3 is a central thickness of the third lens on the optical axis, CT4 is a central thickness of the fourth lens on the optical axis, CT5 is a central thickness of the fifth lens on the optical axis, T34 is an air space between the third lens and the fourth lens on the optical axis, and T45 is an air space between the fourth lens and the fifth lens on the optical axis. More specifically, CT3, CT4, CT5, T34 and T45 may further satisfy: 0.7< (CT3+ CT4+ CT5)/(T34+ T45) < 1.22. The optical imaging lens meets the requirement of 0.7< (CT3+ CT4+ CT5)/(T34+ T45) <1.3, is favorable for ensuring the manufacturability of the optical imaging lens, and simultaneously balances and optimizes the coma aberration and the spherical aberration of the optical imaging lens.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.8< TD/BFL <1.1, wherein BFL is the distance on the optical axis from the image side surface of the fifth lens element to the imaging surface of the optical imaging lens, and TD is the distance on the optical axis from the object side surface of the first lens element to the image side surface of the fifth lens element. More specifically, TD and BFL may further satisfy: 0.85< TD/BFL < 1.09. The requirement that TD/BFL is more than 0.8 and less than 1.1 is met, and the problem that serious stray light is generated due to the fact that the thickness of a spacer bearing structure is too large due to too large space between adjacent lenses is avoided.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.9< (T34+ T45)/∑ AT <1, where Σ AT is the sum of the air intervals on the optical axis of any adjacent two lenses of the first lens to the fifth lens, T34 is the air interval on the optical axis of the third lens and the fourth lens, and T45 is the air interval on the optical axis of the fourth lens and the fifth lens. The optical lens meets the requirement that 0.9< (T34+ T45)/[ sigma ] AT <1, and the fourth lens and the fifth lens are relatively close to an imaging surface by restraining the air interval between the third lens and the fourth lens and the air interval between the fourth lens and the fifth lens, so that long-focus telephoto is realized, the calibers of the two lenses are reduced, and the processing is facilitated.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.6< CT3/DT32<1.4, where CT3 is the central thickness of the third lens on the optical axis and DT32 is the effective radius of the image side surface of the third lens. More specifically, CT3 and DT32 further satisfy: 0.68< CT3/DT32< 1.35. The requirement that the diameter of the image side surface of the third lens is controlled within a certain range is met, the requirement that the CT3/DT32 is 0.6 is met, the aperture of the image side surface of the third lens is controlled within a certain range, the reduction of the aperture and coma aberration and the like is facilitated, the relative illumination is guaranteed within an acceptable range, the thickness of the center and the size of the aperture are restrained, and the manufacturability of the lens is guaranteed.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.1 ≦ l (DT11/DT31) - (DT51/DT31) | <0.3, where DT11 is the effective radius of the object-side face of the first lens, DT31 is the effective radius of the object-side face of the third lens, and DT51 is the effective radius of the object-side face of the fifth lens. More specifically, DT11, DT31 and DT51 may further satisfy: 0.1 ≦ l (DT11/DT31) - (DT51/DT31) | < 0.22. Satisfy | (DT11/DT31) - (DT51/DT31) | <0.3 more than or equal to 0.1, be favorable to controlling the bore size of first lens, third lens and fifth lens to satisfy the aperture size of design, still be favorable to guaranteeing marginal visual field relative illuminance size.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.9 ≦ ETmax/CTmax <1.5, where ETmax is a maximum value of edge thicknesses of the first lens to the fifth lens, and CTmax is a maximum value of center thicknesses of the first lens to the fifth lens on the optical axis. ETmax/CTmax is more than or equal to 0.9 and less than or equal to 1.5, so that the thicknesses of the edges and the centers of the first lens and the fifth lens are favorably controlled within a reasonable range, and the thickness uniformity of each lens is ensured.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1< (ET3+ ET5)/(CT3+ CT5) <1.2, wherein ET3 is the edge thickness of the third lens, ET5 is the edge thickness of the fifth lens, CT3 is the central thickness of the third lens on the optical axis, and CT5 is the central thickness of the fifth lens on the optical axis. More specifically, ET3, ET5, CT3 and CT5 may further satisfy: 1.02< (ET3+ ET5)/(CT3+ CT5) < 1.13. The method meets the requirement that 1< (ET3+ ET5)/(CT3+ CT5) <1.2, and is favorable for ensuring the uniformity of the lens to be in a reasonable processing range.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.6< (ET3+ ET5)/∑ ET <0.8, where Σ ET is the sum of the edge thicknesses of the first lens to the fifth lens, ET3 is the edge thickness of the third lens, and ET5 is the edge thickness of the fifth lens. More specifically, ET3, ET5, and Σ ET further may satisfy: 0.61< (ET3+ ET 5)/[ sigma ] ET < 0.79. The requirements of 0.6< (ET3+ ET 5)/. SIGMA ET <0.8 are met, the processing requirements of taking the glass spherical lens core by the third lens and the fifth lens are favorably met, and the strength of the lens is also ensured.

In an exemplary embodiment, at least two lenses of the first to fifth lenses are glass lenses. The high-refractive-index material adopts spherical glass, the difficulty of glass processing manufacturability is reduced while the optical performance is met, and meanwhile, the refractive index range of the adopted glass material is larger than that of plastic, so that the balance of chromatic aberration is facilitated. The material temperature characteristic of the glass is better than that of the plastic, and the reliability of the lens in a high-temperature and high-humidity environment is improved. The number of lenses made of plastic and glass is not particularly limited, and the lenses can be made of glass lenses if the temperature performance is focused.

In an exemplary embodiment, the first to fifth lenses include a spherical lens and an aspherical lens. The present application does not specifically limit the specific number of spherical lenses and aspheric lenses, and if the resolution quality is focused, the lenses may all use aspheric lenses. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. The spherical lens is characterized in that: there is a constant curvature from the center to the periphery of the lens. The aspheric lens has better curvature radius characteristics, and has the advantages of improving distortion aberration and astigmatic aberration. After the aspheric lens is adopted, the aberration generated in imaging can be eliminated as much as possible, and the imaging quality is further improved.

In an exemplary embodiment, according to the optical imaging lens of the present application, the spherical lens is made of glass, and the aspheric lens is made of plastic, so that the combination of the spherical glass and the aspheric plastic is not only beneficial to reducing the cost, but also beneficial to improving the reliability of the lens in a high-temperature and high-humidity environment.

In an exemplary embodiment, the effective focal length f1 of the first lens may be, for example, in the range of 8.64mm to 12.51mm, the effective focal length f2 of the second lens may be, for example, in the range of 7.90mm to 13.74mm, the effective focal length f3 of the third lens may be, for example, in the range of-5.41 mm to-4.33 mm, the effective focal length f4 of the fourth lens may be, for example, in the range of-112.28 mm to 254.08mm, and the effective focal length f5 of the fifth lens may be, for example, in the range of-5633.89 mm to 24.65 mm. The distance TTL between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis can meet the condition that TTL is more than or equal to 16.00mm and less than 16.76 mm. The ImgH, which is half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens, may be in the range of 3.31mm to 3.48mm, for example. The maximum half field angle Semi-FOV of the optical imaging lens meets the following requirements: Semi-FOV >10.5 deg., which may be, for example, in the range of 10.52 deg. to 11.15 deg..

In an exemplary embodiment, an optical imaging lens according to the present application further includes a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on an imaging surface.

The optical imaging lens according to the exemplary embodiment of the present application has a telephoto characteristic. In application, the optical imaging lens according to the exemplary embodiment of the present application may use a periscopic lens design, such that the length direction of the periscopic lens is arranged along the vertical or lateral direction of the electronic device, thereby achieving the purpose of reducing the thickness of the body of the electronic device. The optical imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, the above five lenses. Through each lens of reasonable setting optical imaging lens, realize the long burnt characteristic of camera lens to can realize good long shot effect.

However, it will be appreciated by those skilled in the art that the number of lenses constituting an optical imaging lens may be varied to achieve the various results and advantages described in the present specification without departing from the claimed subject matter. For example, although five lenses are exemplified in the embodiment, the optical imaging lens is not limited to include five lenses. The optical imaging lens may also include other numbers of lenses, if desired.

Specific examples of an optical imaging lens applicable to the above-described embodiments are further described below with reference to the drawings.

Example 1

An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic structural diagram of an optical imaging lens according to embodiment 1 of the present application.

As shown in fig. 1, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an image forming surface S13.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a concave object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. Filter E6 has an object side S11 and an image side S12. The light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.

In the present example, the effective focal length f of the optical imaging lens is 17.68mm, the total length TTL of the optical imaging lens (i.e., the distance on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the optical imaging lens) is 16.00mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S13 of the optical imaging lens is 3.47mm, and the maximum half field angle Semi-FOV of the optical imaging lens is 10.92 °.

Table 1 shows a basic parameter table of the optical imaging lens of embodiment 1, in which the units of the curvature radius, the thickness, the effective radius, and the effective focal length are all millimeters (mm).

TABLE 1

In embodiment 1, the object-side and image-side surfaces of the first lens E1, the second lens E2, and the fourth lens E4 are aspheric, and the object-side and image-side surfaces of the third lens E3 and the fifth lens E5 are spherical. The profile x of each aspheric lens can be defined using, but not limited to, the following aspheric equation:

wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c being 1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below gives the coefficients A of the higher-order terms which can be used for the aspherical mirrors S1-S4, S7 and S8 in example 1 ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ and A₁₆ 。

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

1.9790E-03

-1.0259E-03

-1.7594E-04

-1.8531E-04

-6.6032E-05

2.2001E-05

2.6989E-06

S2

3.8230E-02

-3.6302E-03

9.2707E-04

-4.5019E-04

7.2370E-06

7.7761E-05

-2.1002E-05

S3

3.2398E-02

2.4223E-03

3.4547E-03

5.6814E-04

2.9659E-04

1.8660E-04

1.4147E-05

S4

1.6477E-02

6.1280E-03

1.9154E-03

4.8563E-04

1.6728E-04

8.0212E-05

3.5185E-06

S7

1.2990E-02

-4.5662E-03

4.9619E-04

-8.5509E-05

2.6590E-05

-8.1897E-06

6.1669E-06

S8

1.5274E-02

-2.1464E-03

1.6286E-04

-3.0231E-05

5.5213E-06

-1.0006E-06

6.0071E-08

TABLE 2

Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different image heights. Fig. 2D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 1, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the optical imaging lens according to embodiment 1 can achieve good imaging quality.

Example 2

An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of parts similar to those of embodiment 1 will be omitted for the sake of brevity. Fig. 3 shows a schematic structural diagram of an optical imaging lens according to embodiment 2 of the present application.

As shown in fig. 3, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an image forming surface S13.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. Filter E6 has an object side S11 and an image side S12. The light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.

In the present example, the effective focal length f of the optical imaging lens is 17.48mm, the total length TTL of the optical imaging lens (i.e., the distance on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the optical imaging lens) is 16.65mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S13 of the optical imaging lens is 3.47mm, and the maximum half field angle Semi-FOV of the optical imaging lens is 11.14 °.

Table 3 shows a basic parameter table of the optical imaging lens of embodiment 2, in which the units of the radius of curvature, the thickness, the effective radius, and the effective focal length are all millimeters (mm). Table 4 shows high-order term coefficients that can be used for each aspherical mirror surface in example 2, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 3

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

1.7037E-03

2.8165E-03

3.7761E-04

-3.1758E-04

-4.6316E-05

1.6102E-05

-1.0426E-06

S2

4.0194E-02

4.3579E-04

4.8292E-04

-1.2314E-03

3.6670E-04

-2.9728E-05

-2.0914E-06

S3

4.2614E-02

8.0120E-03

2.0460E-03

-8.6747E-04

4.3944E-04

6.4071E-05

8.4546E-06

S4

1.8827E-02

8.6293E-03

1.3663E-03

5.9895E-05

2.4041E-05

6.8344E-05

2.0283E-06

S7

-5.5451E-03

-3.1078E-03

-4.3890E-04

-6.7664E-05

-8.7075E-06

4.8744E-07

-2.8135E-06

S8

6.7173E-03

-5.4268E-03

-1.1655E-03

-2.7387E-04

-9.3981E-05

-2.9888E-05

-1.3519E-05

TABLE 4

Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 2. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different image heights. Fig. 4D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the optical imaging lens according to embodiment 2 can achieve good imaging quality.

Example 3

An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic structural diagram of an optical imaging lens according to embodiment 3 of the present application.

As shown in fig. 5, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an image forming surface S13.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. Filter E6 has an object side S11 and an image side S12. The light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.

In the present example, the effective focal length f of the optical imaging lens is 17.30mm, the total length TTL of the optical imaging lens (i.e., the distance on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the optical imaging lens) is 16.75mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S13 of the optical imaging lens is 3.34mm, and the maximum half field angle Semi-FOV of the optical imaging lens is 10.71 °.

Table 5 shows a basic parameter table of the optical imaging lens of embodiment 3, in which the units of the radius of curvature, the thickness, the effective radius, and the effective focal length are all millimeters (mm). Table 6 shows high-order term coefficients that can be used for each aspherical mirror surface in example 3, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 5

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

-2.0899E-02

2.4149E-03

4.0213E-03

2.4500E-03

1.8050E-03

1.3966E-03

3.9170E-04

S2

4.2109E-02

5.2867E-03

1.0451E-03

-1.5596E-03

-5.2546E-04

-1.6181E-03

-2.0729E-03

S3

4.9069E-02

4.6450E-03

1.2261E-03

-1.0767E-03

-8.6883E-04

5.0672E-04

-5.5255E-05

S4

1.8392E-02

-1.8782E-04

1.4153E-03

8.0999E-04

1.0762E-03

8.1036E-04

1.7982E-04

S7

-3.2338E-02

-2.4281E-03

4.1706E-05

-3.7980E-05

6.0703E-06

-7.9585E-06

3.1767E-06

S8

-2.4978E-01

4.3253E-02

-2.9920E-02

-1.2184E-02

-6.5704E-03

-8.8199E-03

-3.0578E-04

TABLE 6

Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 3. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different image heights. Fig. 6D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 3, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the optical imaging lens according to embodiment 3 can achieve good imaging quality.

Example 4

An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application.

As shown in fig. 7, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an image forming surface S13.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a convex image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a concave object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. Filter E6 has an object side S11 and an image side S12. The light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.

In the present example, the effective focal length f of the optical imaging lens is 17.53mm, the total length TTL of the optical imaging lens (i.e., the distance on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the optical imaging lens) is 16.30mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S13 of the optical imaging lens is 3.32mm, and the maximum half field angle Semi-FOV of the optical imaging lens is 10.53 °.

Table 7 shows a basic parameter table of the optical imaging lens of embodiment 4, in which the units of the radius of curvature, the thickness, the effective radius, and the effective focal length are millimeters (mm). Table 8 shows high-order term coefficients that can be used for each aspherical mirror surface in example 4, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 7

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

-8.9804E-03

-3.8745E-04

5.3325E-04

1.9851E-04

1.1337E-05

1.1246E-05

6.2122E-06

S2

4.2226E-02

-2.0595E-03

2.3201E-03

-2.0422E-04

1.0886E-05

5.4601E-05

-9.9125E-06

S3

3.9440E-02

2.7854E-03

2.9358E-03

2.0068E-04

1.9750E-05

6.1655E-05

1.5710E-08

S4

2.1895E-02

4.5644E-03

1.2410E-03

2.0353E-04

2.4265E-05

2.6060E-05

-2.1139E-06

S7

1.2738E-02

-4.4717E-03

1.6430E-04

-4.2856E-05

6.6427E-08

-5.5319E-07

2.8157E-07

S8

3.0894E-02

-3.2730E-03

2.5056E-04

-2.5141E-05

1.3040E-06

4.7773E-08

-6.4288E-08

TABLE 8

Fig. 8A shows on-axis chromatic aberration curves of the optical imaging lens of embodiment 4, which represent the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 4. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different image heights. Fig. 8D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the optical imaging lens according to embodiment 4 can achieve good imaging quality.

Example 5

An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic structural diagram of an optical imaging lens according to embodiment 5 of the present application.

As shown in fig. 9, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an image forming surface S13.

In the present example, the effective focal length f of the optical imaging lens is 17.38mm, the total length TTL of the optical imaging lens (i.e., the distance on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the optical imaging lens) is 16.52mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S13 of the optical imaging lens is 3.40mm, and the maximum half field angle Semi-FOV of the optical imaging lens is 11.03 °.

Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of the radius of curvature, the thickness, the effective radius, and the effective focal length are all millimeters (mm). Table 10 shows high-order term coefficients that can be used for each aspherical mirror surface in example 5, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 9

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

2.8931E-03

1.8869E-03

1.0820E-03

3.4241E-05

8.6915E-05

5.7222E-05

-2.8193E-06

S2

4.0044E-02

-3.3274E-04

9.5646E-04

-1.0491E-03

5.7985E-04

-8.8476E-05

5.8478E-06

S3

4.5462E-02

9.1190E-03

1.7946E-03

-1.0731E-03

4.5251E-04

-4.3179E-05

-2.5657E-06

S4

1.5027E-02

9.6691E-03

6.6119E-04

-2.0129E-04

3.2811E-05

2.9657E-05

-1.2274E-05

S7

-9.7335E-03

-4.9231E-03

-8.3505E-04

-1.2464E-04

-2.3066E-05

-5.5149E-06

-1.7938E-06

S8

2.5512E-02

-6.2586E-03

-1.1504E-03

-1.4492E-04

-2.2066E-05

-4.0538E-06

2.1522E-06

TABLE 10

Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 5. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different image heights. Fig. 10D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 5, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens according to embodiment 5 can achieve good imaging quality.

In summary, examples 1 to 5 satisfy the relationships shown in table 11, respectively.

Conditions/examples	1	2	3	4	5
						f/TTL	1.11	1.05	1.03	1.08	1.05
TTL×tan(Semi-FOV)/ImgH	0.89	0.94	0.95	0.91	0.95
						f/fno/BFL	0.57	0.59	0.53	0.60	0.54
ImgH×fno/f	0.71	0.74	0.76	0.64	0.78
						(f1+f2+f3)/f	0.77	1.10	0.87	0.77	1.00
(f2-f3)/f1	1.33	1.82	1.06	1.57	1.49
						(CTmin+CTmax)/(ATmin+ATmax)	0.69	0.92	1.02	0.91	0.83
∑AT/∑CT	0.73	0.94	0.65	0.82	0.96
						(CT3+CT4+CT5)/(T34+T45)	0.86	0.74	1.21	0.70	0.73
TD/BFL	0.86	1.08	1.01	0.88	1.05
						(T34+T45)/∑AT	0.90	0.98	0.94	0.93	0.98
CT3/DT32	0.70	1.34	0.69	0.70	1.26
						\|(DT11/DT31)-(DT51/DT31)\|	0.21	0.10	0.19	0.18	0.20
ETmax/CTmax	1.43	1.22	0.90	1.46	1.21
						(ET3+ET5)/(CT3+CT5)	1.07	1.09	1.03	1.12	1.07
(ET3+ET5)/∑ET	0.64	0.78	0.77	0.62	0.75

TABLE 11

The present application also provides an imaging device whose electron photosensitive element may be a photo-coupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device may be a stand-alone imaging device such as a digital camera, or may be an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention according to the present application is not limited to the specific combination of the above-mentioned features, but also covers other embodiments where any combination of the above-mentioned features or their equivalents is made without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. The optical imaging lens is characterized by comprising the following components in sequence from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, and a fifth lens; wherein,

the second lens has positive focal power;

at least two lenses of the first lens to the fifth lens are glass lenses;

the effective focal length f of the optical imaging lens meets the following requirements: 15mm < f <18 mm; and

the effective focal length f of the optical imaging lens and the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis satisfy the following conditions: 1< f/TTL < 1.2.

2. The optical imaging lens of claim 1, wherein the half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens, the distance TTL on the optical axis from the object-side surface of the first lens to the imaging surface of the optical imaging lens, and the maximum half field angle Semi-FOV of the optical imaging lens satisfy: 0.8< TTL × tan (Semi-FOV)/ImgH <1.

3. The optical imaging lens of claim 1, wherein a distance BFL from an image side surface of the fifth lens element to an image surface of the optical imaging lens on the optical axis, an effective focal length f of the optical imaging lens, and an aperture value fno of the optical imaging lens satisfy: f/fno/BFL is more than 0.5 and less than or equal to 0.6.

4. The optical imaging lens according to claim 1, wherein the half of diagonal length of the effective pixel area on the imaging surface of the optical imaging lens, the aperture value fno of the optical imaging lens and the effective focal length f of the optical imaging lens satisfy: 0.6< ImgH × fno/f < 0.8.

5. The optical imaging lens of claim 1, wherein the effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the effective focal length f3 of the third lens satisfy: 0.7< (f1+ f2+ f3)/f < 1.2.

6. The optical imaging lens of claim 1, wherein the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the effective focal length f3 of the third lens satisfy: 1< (f2-f3)/f1< 2.

7. The optical imaging lens according to any one of claims 1 to 6, wherein the first lens to the fifth lens each have a center thickness on the optical axis, and any two adjacent lenses of the first lens to the fifth lens have an air space on the optical axis, and a maximum value CTmax of the center thickness, a minimum value CTmin of the center thickness, a maximum value ATmax of the air space, and a minimum value ATmin of the air space satisfy: 0.6< (CTmin + CTmax)/(ATmin + ATmax) < 1.1.

8. The optical imaging lens according to any one of claims 1 to 6, wherein the first lens to the fifth lens each have a center thickness on the optical axis, and any adjacent two lenses of the first lens to the fifth lens have an air space on the optical axis, and a sum Σ CT of the center thicknesses and a sum Σ AT of the air spaces satisfy: 0.6< ∑ AT/Σ CT <1.

9. The optical imaging lens according to any one of claims 1 to 6, wherein a center thickness CT3 of the third lens on the optical axis, a center thickness CT4 of the fourth lens on the optical axis, a center thickness CT5 of the fifth lens on the optical axis, an air space T34 of the third lens and the fourth lens on the optical axis, and an air space T45 of the fourth lens and the fifth lens on the optical axis satisfy: 0.7< (CT3+ CT4+ CT5)/(T34+ T45) < 1.3.

10. The optical imaging lens according to any one of claims 1 to 6, wherein a distance BFL on the optical axis from an image side surface of the fifth lens to an imaging surface of the optical imaging lens and a distance TD on the optical axis from an object side surface of the first lens to the image side surface of the fifth lens satisfy: 0.8< TD/BFL < 1.1.