CN214751059U - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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CN214751059U
CN214751059U CN202120942567.6U CN202120942567U CN214751059U CN 214751059 U CN214751059 U CN 214751059U CN 202120942567 U CN202120942567 U CN 202120942567U CN 214751059 U CN214751059 U CN 214751059U
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lens
optical imaging
image
optical
imaging lens
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翁小凤
闻人建科
戴付建
赵烈烽
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Zhejiang Sunny Optics Co Ltd
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Zhejiang Sunny Optics Co Ltd
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Abstract

The utility model discloses an optical imaging lens includes according to the preface by thing side to picture side along the optical axis: a first lens having an optical power; a second lens having an optical power; a third lens having a refractive power, an image-side surface of which is concave; a fourth lens having an optical power; and a fifth lens with a focal power, an image side surface of which is convex; the on-axis distance TTL from the object side surface of the first lens to the imaging surface, the effective focal length f of the optical imaging lens and the maximum field angle FOV of the optical imaging lens meet the following requirements: TTL/f × tan (FOV/2) < 1.3; an effective focal length f5 of the fifth lens, a radius of curvature R9 of an object-side surface of the fifth lens, and a radius of curvature R10 of an image-side surface of the fifth lens satisfy: 0< f5/(R9+ R10) < 0.8; 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 meet: 0< R1/R2< 0.7. The utility model provides an optical imaging lens makes camera lens realize the miniaturization and guarantee less camera lens front end screen trompil size under the prerequisite of guaranteeing good image quality.

Description

Optical imaging lens
Technical Field
The utility model belongs to the optical imaging field especially relates to an optical imaging lens including five lens.
Background
In modern life, products such as intelligent electronic devices, such as mobile phones, computers, tablets and the like, become an essential part of life of people, and for most consumers, the photographing performance is an important index of the performance of the mobile phones and is more and more focused. Besides excellent imaging quality, high resolution, large depth of field and large aperture, the miniaturization requirement of the electronic equipment on the camera lens is more and more urgent, and the design of a high-pixel light and thin mobile phone lens has important practical significance.
Therefore, a five-piece type image capturing lens assembly is needed, which enables the image capturing lens to be miniaturized and ensures a smaller opening size of a front screen of the lens on the premise of ensuring excellent imaging quality.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an optical imaging lens that five lenses are constituteed is guaranteeing under good image quality's the prerequisite, makes camera lens realize the miniaturation and guarantees less camera lens front end screen trompil size.
An aspect of the present invention provides an optical imaging lens, which includes, along an optical axis, from an object side to an image side according to a predetermined order: a first lens having an optical power; a second lens having an optical power; a third lens having a refractive power, an image-side surface of which is concave; a fourth lens having an optical power; and a fifth lens with a focal power, an image side surface of which is convex; air space is arranged between every two adjacent lenses; comprising a glass aspherical surface.
The on-axis distance TTL from the object side surface of the first lens to the imaging surface, the effective focal length f of the optical imaging lens and the maximum field angle FOV of the optical imaging lens meet the following requirements: TTL/f × tan (FOV/2) < 1.3.
According to an embodiment of the present invention, the effective focal length f5 of the fifth lens, the curvature radius R9 of the object side surface of the fifth lens, and the curvature radius R10 of the image side surface of the fifth lens satisfy: 0< f5/(R9+ R10) < 0.8.
According to an embodiment of the present invention, the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R2 of the image-side surface of the first lens satisfy: 0< R1/R2< 0.7.
According to the utility model discloses an embodiment, the effective focal length f of optical imaging lens satisfies with the radius of curvature R6 of third lens image side: 0.3< f/R6< 1.3.
According to an embodiment of the present invention, the central thickness CT5 of the fifth lens on the optical axis and the central thickness CT4 of the fourth lens on the optical axis satisfy: 0.57 is less than or equal to CT5/CT4< 1.
According to an embodiment of the present invention, the on-axis distance T12 of the first lens to the second lens and the on-axis distance T34 of the third lens to the fourth lens satisfy: 0< T12/T34 is less than or equal to 0.71.
According to an embodiment of the present invention, the on-axis distance T23 of the second lens to the third lens, the on-axis distance T45 of the fourth lens to the fifth lens, and the center thickness CT1 of the first lens on the optical axis satisfy: 1 ≦ (T23+ T45)/CT1< 1.5.
According to an embodiment of the present invention, the effective semi-bore DT21 of the object side surface of the second lens and the effective semi-bore DT12 of the image side surface of the first lens satisfy: DT21/DT12 is not less than 1.01.
According to an embodiment of the present invention, the effective semi-bore DT22 of the image side of the second lens and the effective semi-bore DT31 of the object side of the third lens satisfy: 0.6< DT22/DT31 <1.
According to the utility model discloses an embodiment, optical imaging lens's effective focal length f, the effective focal length f1 of first lens and the effective focal length f4 of fourth lens satisfy: 1< f/f1+ f/f4< 2.
According to an embodiment of the present invention, the sum Σ AT of the air space on the optical axis between any two adjacent lenses having refractive power in the first lens to the closest imaging surface lens and the maximum field angle FOV of the optical imaging lens satisfy: 1.04mm ≦ Σ AT/tan (FOV/2) <2 mm.
According to an embodiment of the present invention, the effective half-bore DT32 of the effective radius side of the second lens image side and the axial distance SAG21 between the intersection point of the second lens object side and the optical axis and the effective radius vertex of the second lens object side satisfies: 0< SAG21/DT32< 0.6.
According to an embodiment of the present invention, the axial distance SAG41 between the effective radius vertex of the fourth lens object side and the intersection of the fourth lens object side and the optical axis and the axial distance SAG42 between the effective radius vertex of the fourth lens image side and the intersection of the fourth lens image side and the optical axis satisfy: 0< SAG41/SAG42< 0.6.
Another aspect of the present invention provides an optical imaging lens, which includes, along an optical axis, from an object side to an image side according to a predetermined order: a first lens having an optical power; a second lens having an optical power; a third lens having a refractive power, an image-side surface of which is concave; a fourth lens having an optical power; and a fifth lens with a focal power, an image side surface of which is convex; air space is arranged between every two adjacent lenses; comprising a glass aspherical surface.
Wherein, each lens is independent, and there is air space on the optical axis between each lens; the effective focal length f of the optical imaging lens and the curvature radius R6 of the image side surface of the third lens meet the following conditions: 0.3< f/R6< 1.3.
The utility model has the advantages that:
the utility model provides an optical imaging camera lens includes multi-disc lens, like first lens to fifth lens. The utility model discloses an optical imaging lens makes camera lens realize the miniaturation and guarantee less camera lens front end screen trompil size under the prerequisite of guaranteeing good image quality.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of a lens assembly according to embodiment 1 of the present invention;
fig. 2a to fig. 2d are an axial chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, according to the optical imaging lens of embodiment 1 of the present invention;
fig. 3 is a schematic view of a lens assembly according to embodiment 2 of the optical imaging lens of the present invention;
fig. 4a to 4d are an axial chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, according to embodiment 2 of the optical imaging lens of the present invention;
fig. 5 is a schematic view of a lens assembly structure according to embodiment 3 of the optical imaging lens system of the present invention;
fig. 6a to 6d are an axial chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, according to embodiment 3 of the optical imaging lens of the present invention;
fig. 7 is a schematic view of a lens assembly structure according to embodiment 4 of the optical imaging lens system of the present invention;
fig. 8a to 8d are an axial chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, according to embodiment 4 of the optical imaging lens of the present invention;
fig. 9 is a schematic view of a lens assembly structure according to embodiment 5 of the present invention;
fig. 10a to 10d are an axial chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, according to embodiment 5 of the optical imaging lens of the present invention;
fig. 11 is a schematic view of a lens assembly according to embodiment 6 of the present invention;
fig. 12a to 12d are an axial chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, according to embodiment 6 of the optical imaging lens of the present invention;
fig. 13 is a schematic view of a lens group structure according to embodiment 7 of the optical imaging lens system of the present invention;
fig. 14a to 14d are an axial chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve according to embodiment 7 of the present invention, respectively.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
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 invention.
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.
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.
In the description of the present invention, the paraxial region means 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.
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, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. Features, principles and other aspects of the present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.
Exemplary embodiments
The optical imaging lens of the exemplary embodiment of the present invention includes five lenses, and includes in order from the object side to the image side along the optical axis: the lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens, wherein the lenses are independent from each other, and an air space is formed between the lenses on an optical axis.
In the present exemplary embodiment, the first lens may have a positive power or a negative power; the second lens may have a positive or negative optical power; the third lens can have positive focal power or negative focal power, and the image side surface of the third lens is a concave surface; the fourth lens may have a positive power or a negative power; the fifth lens can have positive focal power or negative focal power, and the image side surface of the fifth lens is a convex surface; comprising a glass aspherical surface.
In the present exemplary embodiment, the on-axis distance TTL from the object-side surface of the first lens to the imaging plane, the effective focal length f of the optical imaging lens, and the maximum field angle FOV of the optical imaging lens satisfy the conditional expression: TTL/f × tan (FOV/2) < 1.3. By controlling the ratio of the total length of the lens to the effective focal length of the optical imaging lens and the maximum field angle of the imaging lens, the total size of the camera lens group can be effectively reduced, and the ultrathin characteristic and miniaturization of the camera lens group are realized, so that the camera lens group can be better suitable for more and more ultrathin electronic products in the market. More specifically, TTL, f and FOV satisfy: 1< TTL/f × tan (FOV/2) <1.2, for example, 1.06 ≦ TTL/f × tan (FOV/2) ≦ 1.15.
In the present exemplary embodiment, the effective focal length f5 of the fifth lens, the radius of curvature R9 of the object-side surface of the fifth lens, and the radius of curvature R10 of the image-side surface of the fifth lens satisfy the conditional expression: 0< f5/(R9+ R10) < 0.8. The curvature radius and the effective focal length ratio of the image side surface and the object side surface of the fifth lens are controlled in a reasonable range, so that the assembling process of the lens can be ensured, and the fifth lens has higher aberration correction capability. More specifically, f5, R9 and R10 satisfy: 0.3< f5/(R9+ R10) <0.6, for example, 0.34. ltoreq. f5/(R9+ R10). ltoreq.0.53.
In the present exemplary embodiment, the conditional expression that the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R2 of the image-side surface of the first lens satisfy is: 0< R1/R2< 0.7. The ratio of the curvature radius of the image side surface and the curvature radius of the object side surface of the first lens is reasonably constrained, and the deflection angle of light rays passing through the first lens can be controlled, so that the sensitivity of an optical system is effectively reduced, good processing performance is ensured, and the field curvature contribution amount of the first lens is in a reasonable range. More specifically, R1 and R2 satisfy: 0.3< R1/R2<0.5, e.g., 0.36. ltoreq. R1/R2. ltoreq.0.40.
In the present exemplary embodiment, the effective focal length f of the optical imaging lens and the radius of curvature R6 of the image-side surface of the third lens satisfy the conditional expression: 0.3< f/R6< 1.3. The curvature radius of the image side surface of the third lens and the total effective focal length ratio are reasonably controlled, the field sensitivity of the central area is favorably reduced, the camera lens group can keep miniaturization, has higher aberration correction capability and can obtain better manufacturability. More specifically, f and R6 satisfy: 0.6< f/R6<1.2, e.g., 0.62 ≦ f/R6 ≦ 1.00.
In the present exemplary embodiment, the central thickness CT5 of the fifth lens on the optical axis and the central thickness CT4 of the fourth lens on the optical axis satisfy the conditional expression: 0.57 is less than or equal to CT5/CT4< 1. Through the reasonable ratio of the central thickness of the fourth lens on the optical axis to the central thickness of the fifth lens on the optical axis, the assembly process of the lens is favorably ensured, the miniaturization of the optical lens is realized, and the processing sensitivity of the optical system can be reduced. More specifically, CT5 and CT4 satisfy: 0.57. ltoreq. CT5/CT4<0.7, for example 0.57. ltoreq. CT5/CT 4. ltoreq.0.66.
In the present exemplary embodiment, the on-axis distance T12 of the first lens to the second lens and the on-axis distance T34 of the third lens to the fourth lens satisfy the conditional expression: 0< T12/T34 is less than or equal to 0.71. By reasonably controlling the distance between the first lens and the second lens and the distance between the third lens and the fourth lens, the deflection angle of light can be reduced, and the sensitivity of the optical system is reduced. More specifically, T12 and T34 satisfy: 0.5< T12/T34 ≦ 0.71, e.g., 0.52 ≦ T12/T34 ≦ 0.71.
In the present exemplary embodiment, the on-axis distance T23 of the second lens to the third lens, the on-axis distance T45 of the fourth lens to the fifth lens, and the center thickness CT1 of the first lens on the optical axis satisfy the conditional expression: 1 ≦ (T23+ T45)/CT1< 1.5. The air gap between the second lens and the third lens and the air gap between the fourth lens and the fifth lens are reasonably adjusted, so that the risk of ghost images between lenses can be effectively reduced, and the size compression of the camera lens group is facilitated. More specifically, T23, T45 and CT1 satisfy: 1 ≦ (T23+ T45)/CT1<1.3, for example, 1.00 ≦ (T23+ T45)/CT1 ≦ 1.21.
In the present exemplary embodiment, the effective half aperture DT21 of the object-side surface of the second lens and the effective half aperture DT12 of the image-side surface of the first lens satisfy the conditional expression: DT21/DT12 is not less than 1.01. The effective semi-apertures of the first lens and the second lens are reasonably controlled, so that the size of the front end of the lens is favorably reduced, and the whole camera lens group is lighter and thinner; on the other hand, the range of incident light rays is reasonably limited, light rays with poor edge quality are removed, off-axis aberration is reduced, and the resolution of the camera lens group is effectively improved. More specifically, DT21 and DT12 satisfy: 1.01 ≦ DT21/DT12<1.1, e.g., 1.01 ≦ DT21/DT12 ≦ 1.03.
In the present exemplary embodiment, the effective half aperture DT22 of the image-side surface of the second lens and the effective half aperture DT31 of the object-side surface of the third lens satisfy the conditional expression: 0.6< DT22/DT31 <1. The effective half bore of reasonable control second lens and third lens can reduce the total size of the camera lens group when guaranteeing camera lens formation of image quality, high resolution effectively, reduces camera lens front end screen trompil size simultaneously for whole camera lens group is more frivolous. More specifically, DT22 and DT31 satisfy: 0.8< DT22/DT31<0.9, e.g., 0.83 ≦ DT22/DT31 ≦ 0.87.
In the present exemplary embodiment, the effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens, and the effective focal length f4 of the fourth lens satisfy the conditional expression: 1< f/f1+ f/f4< 2. The focal power of the first lens is reasonably distributed, the deflection angle of light rays on the first lens is reduced, and the sensitivity is reduced. Meanwhile, the overlarge surface inclination angle is avoided, so that the good manufacturability of the first lens is ensured. More specifically, f1 and f4 satisfy: 1.6< f/f1+ f/f4<1.9, e.g., 1.63. ltoreq. f/f1+ f/f 4. ltoreq.1.82.
In the present exemplary embodiment, the conditional expression that the sum Σ AT of the air intervals on the optical axis between any adjacent two lenses having optical powers of the first lens to the closest imaging surface lens and the maximum field angle FOV of the optical imaging lens satisfy is: 1.04mm ≦ Σ AT/tan (FOV/2) <2 mm. The reasonable distribution lens group air gap of making a video recording can guarantee processing and equipment characteristic, avoids appearing the clearance undersize and leads to the lens to interfere the scheduling problem around the assembling process appears. Meanwhile, the light deflection is favorably slowed down, the curvature of field of the camera lens group is adjusted, the sensitivity is reduced, and the better imaging quality is obtained. More specifically, Σ AT satisfies with FOV: 1.04mm ≦ Σ AT/tan (FOV/2) <1.2mm, for example, 1.04mm ≦ Σ AT/tan (FOV/2) ≦ 1.18 mm.
In the present exemplary embodiment, the on-axis distance SAG21 between the intersection point of the second lens object-side surface and the optical axis to the effective radius vertex of the second lens object-side surface and the effective half aperture DT32 of the third lens image-side surface satisfies the conditional expression: 0< SAG21/DT32< 0.6. The ratio of the rise of the object side surface of the second lens to the center thickness of the third lens is reasonably controlled, so that the processing, forming and assembling of the imaging lens are favorably ensured, and good imaging quality is obtained. An unreasonable ratio may cause difficulty in adjusting the molding surface shape, and the molding surface shape is easily deformed obviously after being assembled, so that the imaging quality cannot be ensured. More specifically, SAG21 and DT32 satisfy: 0.2< SAG21/DT32<0.55, e.g., 0.22 ≦ SAG21/DT32 ≦ 0.54.
In the present exemplary embodiment, the conditional expression that an on-axis distance SAG41 between an intersection point of the fourth lens object-side surface and the optical axis to an effective radius vertex of the fourth lens object-side surface and an on-axis distance SAG42 between an intersection point of the fourth lens image-side surface and the optical axis to an effective radius vertex of the fourth lens image-side surface satisfies: 0< SAG41/SAG42< 0.6. The ratio of the object-side vector height of the fourth lens to the image-side vector height of the fourth lens is reasonably controlled, so that the field curvature, the on-axis spherical aberration and the chromatic spherical aberration of the imaging lens group can be balanced easily, and the imaging lens group can obtain good imaging quality and low system sensitivity, thereby better ensuring the processability of the optical imaging lens group. More specifically, SAG41 and SAG42 satisfy: 0.3< SAG41/SAG42<0.5, e.g., 0.38 ≦ SAG41/SAG42 ≦ 0.47.
In the present exemplary embodiment, the above-described optical imaging lens may further include a diaphragm. The stop may be disposed at an appropriate position as needed, for example, the stop may be disposed between the object side and the first lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element on the imaging surface.
The optical imaging lens according to the above embodiments of the present invention may adopt a plurality of lenses, for example, the above five lenses. The optical imaging lens has the characteristics of large imaging image surface, wide imaging range and high imaging quality by reasonably distributing the focal power and the surface type of each lens, the central thickness of each lens, the on-axis distance between each lens and the like, and the ultrathin property of the mobile phone is ensured.
In an exemplary embodiment, at least one of the mirror surfaces of each lens is an aspheric mirror surface, i.e., at least one of the object side surface of the first lens to the image side surface of the fifth lens is an aspheric mirror surface. The aspheric lens is characterized in that: the aspherical lens has a better curvature radius characteristic, and has advantages of improving distortion aberration and astigmatic aberration, unlike a spherical lens having a constant curvature from the lens center to the lens periphery, in which the curvature is continuously varied from the lens center to the lens periphery. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of an object-side surface and an image-side surface of each of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens is an aspheric mirror surface. Optionally, each of the first lens, the second lens, the third lens, the fourth lens and the fifth lens has an object-side surface and an image-side surface which are aspheric mirror surfaces.
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, and may include other numbers of lenses if necessary.
Specific embodiments of an optical imaging lens suitable for the above-described embodiments are further described below with reference to the drawings.
Detailed description of the preferred embodiment 1
Fig. 1 is a schematic view of a lens assembly according to embodiment 1 of the present invention, wherein the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: 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 negative power, and has a concave 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 convex 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 plane S13.
As shown in table 1, a basic parameter table of the optical imaging lens of embodiment 1 is shown, in which the units of the curvature radius, the thickness, and the focal length are all millimeters (mm).
Flour mark Surface type Radius of curvature Thickness/distance Focal length Refractive index Coefficient of dispersion Coefficient of cone
OBJ Spherical surface All-round All-round
STO Spherical surface All-round -0.2222
S1 Aspherical surface 0.9410 0.4593 2.77 1.50 81.5 -0.0646
S2 Aspherical surface 2.4824 0.1928 10.6988
S3 Aspherical surface -8.1999 0.2100 -24.44 1.68 19.24 9.1506
S4 Aspherical surface -16.4094 0.2173 -50.0000
S5 Aspherical surface 4.7551 0.2350 -13.25 1.67 20.37 -15.8834
S6 Aspherical surface 3.0307 0.2869 6.8500
S7 Aspherical surface 28.2173 0.5206 1.67 1.55 56.11 0.9144
S8 Aspherical surface -0.9342 0.2928 -0.8660
S9 Aspherical surface -0.5330 0.3396 -1.42 1.54 55.65 -1.0000
S10 Aspherical surface -2.1607 0.2927 -0.3417
S11 Spherical surface All-round 0.2100 1.52 64.17
S12 Spherical surface All-round 0.1931
S13 Spherical surface All-round All-round
TABLE 1
As shown in table 2, in embodiment 1, the total effective focal length f of the optical imaging lens is 3.03mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S13 is 3.45mm, the half ImgH of the diagonal line length of the effective pixel region on the imaging surface S13 is 2.90mm, and the half semifov of the maximum field angle of the optical imaging lens is 42.99 °.
Figure BDA0003051311540000081
TABLE 2
The optical imaging lens in embodiment 1 satisfies:
TTL/f × tan (FOV/2) ═ 1.06, where TTL is an on-axis distance from an object-side surface of the first lens to an imaging surface, f is an effective focal length of the optical imaging lens, and FOV is a maximum field angle of the optical imaging lens;
f5/(R9+ R10) ═ 0.53, wherein f5 is the effective focal length of the fifth lens, R9 is the radius of curvature of the object-side surface of the fifth lens, and R10 is the radius of curvature of the image-side surface of the fifth lens;
R1/R2 is 0.38, where R1 is the radius of curvature of the object-side surface of the first lens and R2 is the radius of curvature of the image-side surface of the first lens;
f/R6 is 1.00, wherein f is the effective focal length of the optical imaging lens, and R6 is the curvature radius of the image side surface of the third lens;
CT5/CT4 is 0.65, where CT5 is the central thickness of the fifth lens on the optical axis, and CT4 is the central thickness of the fourth lens on the optical axis;
T12/T34 is 0.67, where T12 is the on-axis distance from the first lens to the second lens and T34 is the on-axis distance from the third lens to the fourth lens;
(T23+ T45)/CT1 is 1.11, where T23 is an on-axis distance of the second lens to the third lens, T45 is an on-axis distance of the fourth lens to the fifth lens, and CT1 is a center thickness of the first lens on the optical axis;
DT21/DT12 is 1.01, where DT21 is the effective half aperture of the object-side surface of the second lens and DT12 is the effective half aperture of the image-side surface of the first lens;
DT22/DT31 is 0.83, where DT22 is the effective half aperture of the image-side surface of the second lens and DT31 is the effective half aperture of the object-side surface of the third lens;
f/f1+ f/f4 is 1.82, where f is the effective focal length of the optical imaging lens, f1 is the effective focal length of the first lens, and f4 is the effective focal length of the fourth lens;
Σ AT/tan (FOV/2) is 1.06mm, where Σ AT is the sum of air intervals on the optical axis between any two adjacent lenses having optical powers in the first lens to the lens closest to the imaging surface, and FOV is the maximum field angle of the optical imaging lens;
SAG21/DT32 is 0.28, wherein SAG21 is the on-axis distance between the intersection point of the object side surface of the second lens and the optical axis and the effective radius vertex of the object side surface of the second lens, and DT32 is the effective half caliber of the image side surface of the third lens;
SAG41/SAG42 is 0.45, wherein SAG41 is the on-axis distance between the intersection of the fourth lens object side surface and the optical axis and the effective radius vertex of the fourth lens object side surface, and SAG42 is the on-axis distance between the intersection of the fourth lens image side surface and the optical axis and the effective radius vertex of the fourth lens image side surface.
In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 to the fifth lens E5 are aspheric surfaces, and the surface shape x of each aspheric lens can be defined by, but is not limited to, the following aspheric surface formula:
Figure BDA0003051311540000091
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); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspheric surface.
In example 1, the object-side surface and the image-side surface of any one of the first lens element E1 through the fifth lens element E5 are aspheric, and table 3 shows the high-order term coefficients a that can be used for the aspheric mirror surfaces S1 through S10 in example 14、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30。
Figure BDA0003051311540000092
Figure BDA0003051311540000101
TABLE 3
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 the deviation of different image heights on the imaging surface after the 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.
Specific example 2
Fig. 3 is a schematic view of a lens assembly according to embodiment 2 of the present invention, wherein the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: 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 negative power, and has a concave 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 convex 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 plane S13.
As shown in table 4, the basic parameter table of the optical imaging lens of embodiment 2 is shown, in which the units of the curvature radius, the thickness, and the focal length are all millimeters (mm).
Flour mark Surface type Radius of curvature Thickness/distance Focal length Refractive index Coefficient of dispersion Coefficient of cone
OBJ Spherical surface All-round All-round
STO Spherical surface All-round -0.2169
S1 Aspherical surface 0.9439 0.4619 2.79 1.50 81.5 -0.0533
S2 Aspherical surface 2.4728 0.2058 11.3567
S3 Aspherical surface -8.5778 0.2100 -44.03 1.68 19.24 -9.4787
S4 Aspherical surface -12.1581 0.2188 49.6693
S5 Aspherical surface 6.1827 0.2401 -11.14 1.67 20.37 -13.6562
S6 Aspherical surface 3.3225 0.2979 4.7640
S7 Aspherical surface 30.4488 0.5255 1.67 1.55 56.11 1.3606
S8 Aspherical surface -0.9366 0.2857 -0.8591
S9 Aspherical surface -0.5668 0.3484 -1.38 1.54 55.65 -1.0000
S10 Non-ballNoodle -2.9002 0.2706 -0.5214
S11 Spherical surface All-round 0.2100 1.52 64.17
S12 Spherical surface All-round 0.1753
S13 Spherical surface All-round All-round
TABLE 4
As shown in table 5, in embodiment 2, the total effective focal length f of the optical imaging lens is 3.03mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S13 is 3.45mm, the half ImgH of the diagonal line length of the effective pixel region on the imaging surface S13 is 3.01mm, and the half semifov of the maximum field angle of the optical imaging lens is 44.24 °. The parameters of each relation are as explained in the first embodiment, and the values of each relation are as listed in the following table.
Figure BDA0003051311540000111
TABLE 5
In example 2, the object-side surface and the image-side surface of any one of the first lens element E1 through the fifth lens element E5 are aspheric, and table 6 shows the high-order term coefficients a that can be used for the aspheric mirror surfaces S1 through S10 in example 24、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30。
Figure BDA0003051311540000112
Figure BDA0003051311540000121
TABLE 6
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 a meridional field curvature and a 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 surface after the 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.
Specific example 3
Fig. 5 is a schematic view of a lens assembly according to embodiment 3 of the present invention, wherein the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: 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 concave 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 convex 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 plane S13.
As shown in table 7, the basic parameter table of the optical imaging lens of embodiment 3 is shown, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).
Flour mark Surface type Radius of curvature Thickness/distance Focal length Refractive index Coefficient of dispersion Coefficient of cone
OBJ Spherical surface All-round All-round
STO Spherical surface All-round -0.2141
S1 Aspherical surface 0.9322 0.4423 2.83 1.50 81.5 -0.0089
S2 Aspherical surface 2.3340 0.1951 11.1024
S3 Aspherical surface -5.6299 0.2173 60.00 1.68 19.24 44.8862
S4 Aspherical surface -5.0221 0.2442 43.4267
S5 Aspherical surface 8.0258 0.2400 -7.98 1.67 20.37 11.5448
S6 Aspherical surface 3.1614 0.2761 5.3877
S7 Aspherical surface 19.6994 0.5908 1.67 1.55 56.11 98.0000
S8 Aspherical surface -0.9443 0.2906 -0.8499
S9 Aspherical surface -0.5707 0.3380 -1.38 1.54 55.65 -0.9993
S10 Aspherical surface -2.9982 0.2508 -0.6630
S11 Spherical surface All-round 0.2100 1.52 64.17
S12 Spherical surface All-round 0.1548
S13 Spherical surface All-round All-round
TABLE 7
As shown in table 8, in embodiment 3, the total effective focal length f of the optical imaging lens is 2.97mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S13 is 3.45mm, the half ImgH of the diagonal line length of the effective pixel region on the imaging surface S13 is 2.90mm, and the half semifov of the maximum field angle of the optical imaging lens is 43.59 °. The parameters of each relation are as explained in the first embodiment, and the values of each relation are as listed in the following table.
Figure BDA0003051311540000131
TABLE 8
In example 3, the object-side surface and the image-side surface of any one of the first lens E1 to the fifth lens E5 are aspheric, and table 9 shows the high-order term coefficients a usable for the aspheric mirror surfaces S1 to S10 in example 34、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30。
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -1.4390E-02 1.8143E+00 -3.7865E+01 5.3300E+02 -4.9289E+03 3.0428E+04 -1.2490E+05
S2 -1.2909E-02 -2.3406E+00 1.0358E+02 -2.7352E+03 4.6354E+04 -5.3410E+05 4.3218E+06
S3 -1.3688E-01 -4.9133E-02 5.2919E+00 -8.6438E+01 6.5690E+02 -2.6568E+03 5.5550E+03
S4 -1.3743E-01 8.0647E-02 3.7068E+00 -2.9783E+01 1.2389E+02 -2.5036E+02 2.1074E+02
S5 -6.3402E-01 1.4093E+00 -9.6571E+00 5.7301E+01 -2.5019E+02 7.1873E+02 -1.2845E+03
S6 -6.0749E-01 1.2831E+00 -3.7919E+00 9.0296E+00 -1.5160E+01 1.3348E+01 5.2229E+00
S7 -3.2724E-01 1.3146E-01 1.3443E+00 -8.1563E+00 2.9650E+01 -7.1318E+01 1.1741E+02
S8 9.4419E-02 -7.1330E-01 4.5241E+00 -1.6191E+01 3.7791E+01 -5.7971E+01 6.0245E+01
S9 1.0693E+00 -2.1396E+00 3.7025E+00 -4.4394E+00 3.7657E+00 -2.3290E+00 1.0662E+00
S10 5.5675E-01 -1.0653E+00 1.2814E+00 -9.9519E-01 4.4097E-01 -3.4637E-02 -9.0790E-02
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 3.3129E+05 -5.2400E+05 3.8239E+05 5.5672E+04 -1.8927E+05 0.0000E+00 0.0000E+00
S2 -2.4981E+07 1.0361E+08 -3.0573E+08 6.2621E+08 -8.4582E+08 6.7725E+08 -2.4344E+08
S3 -4.7495E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S4 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S5 1.2940E+03 -5.6573E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S6 -2.9027E+01 3.1274E+01 -9.0018E+00 -1.0417E+01 1.1179E+01 -4.1828E+00 5.5941E-01
S7 -1.3581E+02 1.1164E+02 -6.4883E+01 2.6041E+01 -6.8611E+00 1.0672E+00 -7.4235E-02
S8 -4.3585E+01 2.2247E+01 -7.9898E+00 1.9756E+00 -3.1991E-01 3.0492E-02 -1.2940E-03
S9 -3.6242E-01 9.0893E-02 -1.6541E-02 2.1168E-03 -1.8000E-04 9.0965E-06 -2.0581E-07
S10 6.6420E-02 -2.5417E-02 6.2024E-03 -9.9667E-04 1.0255E-04 -6.1445E-06 1.6342E-07
TABLE 9
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 a meridional field curvature and a 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 the deviation of different image heights on the imaging surface after the 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.
Specific example 4
Fig. 7 is a schematic view of a lens assembly according to embodiment 4 of the present invention, wherein the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: 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 negative power, and has a concave object-side surface S3 and a convex image-side surface S4. The third lens element E3 has positive 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 convex 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 plane S13.
As shown in table 10, the basic parameter table of the optical imaging lens of embodiment 4 is shown, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).
Flour mark Surface type Radius of curvature Thickness/distance Focal length Refractive index Coefficient of dispersion Coefficient of cone
OBJ Spherical surface All-round All-round
STO Spherical surface All-round -0.2080
S1 Aspherical surface 0.9567 0.4430 2.79 1.50 81.5 -0.0074
S2 Aspherical surface 2.6031 0.2116 12.3860
S3 Aspherical surface -4.7362 0.2100 -11.93 1.68 19.24 19.1063
S4 Aspherical surface -11.6443 0.1577 -62.1935
S5 Aspherical surface 4.0287 0.2400 60.00 1.67 20.37 23.0663
S6 Aspherical surface 4.3728 0.4225 11.0720
S7 Aspherical surface 52.1711 0.5104 1.83 1.55 56.11 -98.0000
S8 Aspherical surface -1.0142 0.3042 -0.8325
S9 Aspherical surface -0.5807 0.3380 -1.37 1.54 55.65 -0.9996
S10 Aspherical surface -3.2938 0.2489 -0.7060
S11 Spherical surface All-round 0.2100 1.52 64.17
S12 Spherical surface All-round 0.1537
S13 Spherical surface All-round All-round
Watch 10
As shown in table 11, in embodiment 4, the total effective focal length f of the optical imaging lens is 2.97mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S13 is 3.45mm, the half ImgH of the diagonal line length of the effective pixel region on the imaging surface S13 is 3.01mm, and the half semifov of the maximum field angle of the optical imaging lens is 44.78 °. The parameters of each relation are as explained in the first embodiment, and the values of each relation are as listed in the following table.
Figure BDA0003051311540000151
TABLE 11
In example 4, the object-side surface and the image-side surface of any one of the first lens element E1 through the fifth lens element E5 are aspheric, and table 12 shows the high-order term coefficients a that can be used for the aspheric mirror surfaces S1 through S10 in example 44、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30。
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -1.3852E-02 1.6456E+00 -3.3092E+01 4.4843E+02 -4.0018E+03 2.3909E+04 -9.5170E+04
S2 -1.5105E-02 -2.2589E+00 9.6891E+01 -2.4141E+03 3.8660E+04 -4.2282E+05 3.2636E+06
S3 -1.4529E-01 7.7719E-01 -2.6952E+00 -2.0870E+01 2.9126E+02 -1.3769E+03 3.0476E+03
S4 -2.6517E-01 1.4673E+00 -5.6246E+00 1.7097E+01 -2.5249E+01 1.3027E+01 8.3634E+00
S5 -5.9980E-01 1.1529E+00 -3.5335E+00 3.0811E+00 2.1429E+01 -1.0095E+02 1.9910E+02
S6 -3.9844E-01 5.6068E-01 -1.8308E-02 -8.9199E+00 4.7700E+01 -1.4101E+02 2.7159E+02
S7 -2.4082E-01 7.5305E-03 1.0384E+00 -5.3543E+00 1.7847E+01 -3.9447E+01 5.9775E+01
S8 8.9970E-02 -6.9533E-01 4.2697E+00 -1.4892E+01 3.3949E+01 -5.0995E+01 5.2019E+01
S9 1.0401E+00 -2.0568E+00 3.5126E+00 -4.1604E+00 3.4894E+00 -2.1362E+00 9.6940E-01
S10 5.4662E-01 -1.0575E+00 1.3285E+00 -1.1436E+00 6.6642E-01 -2.4985E-01 4.8648E-02
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 2.4503E+05 -3.7619E+05 2.6629E+05 3.7522E+04 -1.2344E+05 0.0000E+00 0.0000E+00
S2 -1.8069E+07 7.1994E+07 -2.0451E+08 4.0367E+08 -5.2564E+08 4.0576E+08 -1.4061E+08
S3 -2.6731E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S4 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S5 -1.9453E+02 7.4868E+01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S6 -3.5306E+02 3.0603E+02 -1.6611E+02 4.6258E+01 -3.6429E-01 -2.8601E+00 3.7227E-01
S7 -6.3862E+01 4.8603E+01 -2.6171E+01 9.7253E+00 -2.3691E+00 3.4013E-01 -2.1805E-02
S8 -3.7030E+01 1.8647E+01 -6.6281E+00 1.6281E+00 -2.6311E-01 2.5166E-02 -1.0790E-03
S9 -3.2722E-01 8.1689E-02 -1.4845E-02 1.9054E-03 -1.6346E-04 8.3999E-06 -1.9534E-07
S10 3.1304E-03 -5.0746E-03 1.5953E-03 -2.7785E-04 2.9032E-05 -1.7089E-06 4.3767E-08
TABLE 12
Fig. 8a shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which represents 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 a meridional field curvature and a 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 the 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.
Specific example 5
Fig. 9 is a schematic view of a lens assembly according to embodiment 5 of the present invention, wherein the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: 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 negative power, and has a concave 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 convex 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 plane S13.
As shown in table 13, the basic parameter table of the optical imaging lens of example 5 is shown, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).
Flour mark Surface type Radius of curvature Thickness/distance Focal length Refractive index Coefficient of dispersion Coefficient of cone
OBJ Spherical surface All-round All-round
STO Spherical surface All-round -0.2112
S1 Aspherical surface 0.9712 0.4436 2.83 1.50 81.5 -0.0196
S2 Aspherical surface 2.6509 0.2079 12.8195
S3 Aspherical surface -11.0920 0.2100 -11.65 1.68 19.24 56.4653
S4 Aspherical surface 27.6238 0.1842 -94.7956
S5 Aspherical surface 4.3822 0.2428 -242.12 1.67 20.37 23.3807
S6 Aspherical surface 4.1719 0.3950 11.4927
S7 Aspherical surface 23.7326 0.5280 1.83 1.55 56.11 -89.6234
S8 Aspherical surface -1.0348 0.3287 -0.8264
S9 Aspherical surface -0.5898 0.3380 -1.42 1.54 55.65 -0.9995
S10 Aspherical surface -3.1418 0.2537 -1.0730
S11 Spherical surface All-round 0.2100 1.52 64.17
S12 Spherical surface All-round 0.1581
S13 Spherical surface All-round All-round
Watch 13
As shown in table 14, in embodiment 5, the total effective focal length f of the optical imaging lens is 3.02mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S13 is 3.50mm, the half ImgH of the diagonal line length of the effective pixel region on the imaging surface S13 is 2.92mm, and the half semifov of the maximum field angle of the optical imaging lens is 43.47 °. The parameters of each relation are as explained in the first embodiment, and the values of each relation are as listed in the following table.
Figure BDA0003051311540000171
TABLE 14
In example 5, the object-side surface and the image-side surface of any one of the first lens element E1 through the fifth lens element E5 are aspheric, and table 15 shows the high-order term coefficients a that can be used for the aspheric mirror surfaces S1 through S10 in example 54、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30。
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -2.4863E-02 2.1306E+00 -4.3172E+01 5.6345E+02 -4.7889E+03 2.7152E+04 -1.0257E+05
S2 -2.3767E-02 -2.0147E+00 9.3287E+01 -2.3844E+03 3.8695E+04 -4.2684E+05 3.3152E+06
S3 -1.5058E-01 6.3822E-01 -1.9487E-01 -3.9981E+01 3.4778E+02 -1.3714E+03 2.6752E+03
S4 -2.0850E-01 1.2994E+00 -5.0794E+00 1.4847E+01 -2.1560E+01 1.0772E+01 7.0397E+00
S5 -5.8799E-01 1.4581E+00 -7.1978E+00 2.7670E+01 -8.1484E+01 1.7117E+02 -2.4315E+02
S6 -4.4690E-01 7.8307E-01 -1.1456E+00 -5.2514E+00 4.1899E+01 -1.4610E+02 3.1762E+02
S7 -2.3903E-01 2.0616E-02 1.0920E+00 -5.7912E+00 1.8836E+01 -4.0136E+01 5.8555E+01
S8 9.8084E-02 -7.6886E-01 4.7383E+00 -1.6570E+01 3.7519E+01 -5.6109E+01 5.7328E+01
S9 1.0335E+00 -2.0705E+00 3.5944E+00 -4.3516E+00 3.7512E+00 -2.3709E+00 1.1150E+00
S10 5.4037E-01 -1.0011E+00 1.1291E+00 -7.5231E-01 1.9312E-01 1.2889E-01 -1.6063E-01
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 2.5101E+05 -3.6708E+05 2.4846E+05 3.2078E+04 -1.0416E+05 0.0000E+00 0.0000E+00
S2 -1.8441E+07 7.3751E+07 -2.1013E+08 4.1587E+08 -5.4287E+08 4.2010E+08 -1.4594E+08
S3 -2.1051E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S4 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S5 2.0835E+02 -8.2327E+01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S6 -4.5789E+02 4.3536E+02 -2.5753E+02 7.9112E+01 -2.9093E+00 -4.3533E+00 5.8388E-01
S7 -6.0340E+01 4.4450E+01 -2.3269E+01 8.4448E+00 -2.0176E+00 2.8514E-01 -1.8050E-02
S8 -4.1153E+01 2.1045E+01 -7.6520E+00 1.9373E+00 -3.2519E-01 3.2571E-02 -1.4748E-03
S9 -3.9151E-01 1.0207E-01 -1.9456E-02 2.6326E-03 -2.3942E-04 1.3121E-05 -3.2750E-07
S10 8.4811E-02 -2.7763E-02 6.0505E-03 -8.8182E-04 8.2775E-05 -4.5319E-06 1.1007E-07
Watch 15
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 a meridional field curvature and a 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 the deviation of different image heights on the imaging surface after the 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.
Specific example 6
Fig. 11 is a schematic view of a lens assembly according to embodiment 6 of the present invention, wherein the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: 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 negative power, and has a concave object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive 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 convex 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 plane S13.
As shown in table 16, the basic parameter table of the optical imaging lens of example 6 is shown, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).
Flour mark Surface type Radius of curvature Thickness/distance Focal length Refractive index Coefficient of dispersion Coefficient of cone
OBJ Spherical surface All-round All-round
STO Spherical surface All-round -0.2091
S1 Aspherical surface 0.9753 0.4429 2.83 1.50 81.5 -0.0166
S2 Aspherical surface 2.6882 0.2079 12.8759
S3 Aspherical surface -8.7671 0.2101 -10.32 1.68 19.24 62.6604
S4 Aspherical surface 34.9017 0.1845 -98.0000
S5 Aspherical surface 4.0021 0.2410 70.00 1.67 20.37 22.6707
S6 Aspherical surface 4.2718 0.3987 11.3529
S7 Aspherical surface 24.1212 0.5250 1.83 1.55 56.11 -69.3692
S8 Aspherical surface -1.0345 0.3235 -0.8280
S9 Aspherical surface -0.5873 0.3397 -1.41 1.54 55.65 -1.0001
S10 Aspherical surface -3.1379 0.2560 -1.0862
S11 Spherical surface All-round 0.2100 1.52 64.17
S12 Spherical surface All-round 0.1607
S13 Spherical surface All-round All-round
TABLE 16
As shown in table 17, in embodiment 6, the total effective focal length f of the optical imaging lens is 3.01mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S13 is 3.50mm, the half ImgH of the diagonal line length of the effective pixel region on the imaging surface S13 is 2.95mm, and the half semifov of the maximum field angle of the optical imaging lens is 43.76 °. The parameters of each relation are as explained in the first embodiment, and the values of each relation are as listed in the following table.
Figure BDA0003051311540000191
TABLE 17
In example 6, the object-side surface and the image-side surface of any one of the first lens element E1 to the fifth lens element E5 are aspheric, and table 18 shows the high-order term coefficients a that can be used for the aspheric mirror surfaces S1 to S10 in example 64、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30。
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -2.1311E-02 1.8267E+00 -3.6138E+01 4.8561E+02 -4.3076E+03 2.5480E+04 -9.9840E+04
S2 -2.3700E-02 -2.1512E+00 9.5789E+01 -2.3281E+03 3.6026E+04 -3.8125E+05 2.8597E+06
S3 -1.2159E-01 1.1042E-02 5.9549E+00 -7.5020E+01 4.6759E+02 -1.6067E+03 2.9080E+03
S4 -1.9436E-01 9.0611E-01 -1.8213E+00 -1.3018E-01 1.8435E+01 -4.6558E+01 4.0786E+01
S5 -5.8699E-01 1.3817E+00 -5.7605E+00 1.4830E+01 -2.0136E+01 8.6926E-01 3.2640E+01
S6 -4.3148E-01 7.9011E-01 -1.7448E+00 1.0566E+00 5.9299E+00 -1.9553E+01 2.8552E+01
S7 -2.4102E-01 3.5702E-02 1.0340E+00 -5.6520E+00 1.8578E+01 -3.9768E+01 5.8220E+01
S8 9.4432E-02 -7.1268E-01 4.3660E+00 -1.5104E+01 3.3803E+01 -4.9726E+01 4.9673E+01
S9 1.0258E+00 -1.9986E+00 3.3381E+00 -3.8470E+00 3.1264E+00 -1.8503E+00 8.1139E-01
S10 5.3535E-01 -9.7583E-01 1.0590E+00 -6.3720E-01 6.8986E-02 2.2154E-01 -2.0984E-01
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 2.5162E+05 -3.7643E+05 2.5903E+05 3.3916E+04 -1.1064E+05 0.0000E+00 0.0000E+00
S2 -1.5450E+07 6.0266E+07 -1.6792E+08 3.2544E+08 -4.1624E+08 3.1560E+08 -1.0742E+08
S3 -2.1849E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S4 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S5 -3.3944E+01 7.1031E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S6 -2.0858E+01 1.4006E+00 1.3916E+01 -1.6776E+01 1.0532E+01 -3.5323E+00 4.6675E-01
S7 -6.0225E+01 4.4553E+01 -2.3421E+01 8.5316E+00 -2.0443E+00 2.8951E-01 -1.8347E-02
S8 -3.4640E+01 1.7095E+01 -5.9569E+00 1.4348E+00 -2.2737E-01 2.1318E-02 -8.9528E-04
S9 -2.6499E-01 6.4162E-02 -1.1350E-02 1.4251E-03 -1.2032E-04 6.1313E-06 -1.4266E-07
S10 1.0367E-01 -3.2987E-02 7.0868E-03 -1.0253E-03 9.5944E-05 -5.2516E-06 1.2780E-07
Watch 18
Fig. 12a shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 12b shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of embodiment 6. Fig. 12c shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different image heights. Fig. 12d shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 6, which represents the deviation of different image heights on the imaging plane after the light passes through the lens. As can be seen from fig. 12a to 12d, the optical imaging lens according to embodiment 6 can achieve good imaging quality.
Specific example 7
Fig. 13 is a schematic view of a lens assembly according to embodiment 7 of the present invention, wherein the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: 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 negative power, and has a concave object-side surface S3 and a convex image-side surface S4. The third lens element E3 has positive 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 plane S13.
As shown in table 19, the basic parameter table of the optical imaging lens of example 7 is shown, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).
Flour mark Surface type Radius of curvature Thickness/distance Focal length Refractive index Coefficient of dispersion Coefficient of cone
OBJ Spherical surface All-round All-round
STO Spherical surface All-round -0.2150
S1 Aspherical surface 0.9631 0.4485 2.78 1.50 81.5 -0.0137
S2 Aspherical surface 2.6810 0.2309 13.1939
S3 Aspherical surface -4.3521 0.2100 -11.86 1.68 19.24 20.2407
S4 Aspherical surface -9.6767 0.1501 41.7680
S5 Aspherical surface 4.5062 0.2400 70.00 1.67 20.37 22.4768
S6 Aspherical surface 4.8812 0.4278 13.8975
S7 Aspherical surface -70.0000 0.5314 1.81 1.55 56.11 -98.0000
S8 Aspherical surface -0.9762 0.2967 -0.8294
S9 Aspherical surface -0.5812 0.3380 -1.36 1.54 55.65 -0.9993
S10 Aspherical surface -3.4035 0.2566 -0.5945
S11 Spherical surface All-round 0.2100 1.52 64.17
S12 Spherical surface All-round 0.1600
S13 Spherical surface All-round All-round
Watch 19
As shown in table 20, in example 7, the total effective focal length f of the optical imaging lens is 3.02mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S13 is 3.50mm, the half ImgH of the diagonal line length of the effective pixel region on the imaging surface S13 is 3.01mm, and the half semifov of the maximum field angle of the optical imaging lens is 44.27 °. The parameters of each relation are as explained in the first embodiment, and the values of each relation are as listed in the following table.
Figure BDA0003051311540000211
Watch 20
In example 7, the object-side surface and the image-side surface of any one of the first lens element E1 to the fifth lens element E5 are aspheric, and table 21 shows the high-order term coefficients a that can be used for the aspheric mirror surfaces S1 to S10 in example 74、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30。
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -1.4413E-02 1.7190E+00 -3.4833E+01 4.6903E+02 -4.1306E+03 2.4254E+04 -9.4675E+04
S2 -1.0286E-02 -2.1507E+00 9.2803E+01 -2.2954E+03 3.6414E+04 -3.9422E+05 3.0115E+06
S3 -1.3125E-01 6.5969E-01 -7.5613E-01 -3.4581E+01 3.3284E+02 -1.3859E+03 2.8221E+03
S4 -2.6608E-01 1.3215E+00 -4.2863E+00 9.6681E+00 -3.5744E+00 -2.0646E+01 2.9243E+01
S5 -6.0354E-01 1.0548E+00 -2.5866E+00 -1.8551E+00 3.5819E+01 -1.2131E+02 2.0344E+02
S6 -3.8984E-01 4.8251E-01 3.2348E-01 -1.0009E+01 5.0305E+01 -1.4709E+02 2.8655E+02
S7 -2.3661E-01 -3.8238E-02 1.3182E+00 -6.5849E+00 2.1633E+01 -4.7323E+01 7.1087E+01
S8 9.9534E-02 -7.0590E-01 4.3630E+00 -1.5437E+01 3.5430E+01 -5.3353E+01 5.4490E+01
S9 1.0401E+00 -2.0538E+00 3.5069E+00 -4.1587E+00 3.4957E+00 -2.1466E+00 9.7769E-01
S10 5.3720E-01 -1.0580E+00 1.3594E+00 -1.2047E+00 7.3159E-01 -2.9554E-01 7.1302E-02
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 2.3883E+05 -3.5923E+05 2.4936E+05 3.3943E+04 -1.1073E+05 0.0000E+00 0.0000E+00
S2 -1.6502E+07 6.5080E+07 -1.8300E+08 3.5757E+08 -4.6094E+08 3.5224E+08 -1.2084E+08
S3 -2.3101E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S4 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S5 -1.7232E+02 5.5378E+01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S6 -3.8247E+02 3.4420E+02 -1.9598E+02 5.8587E+01 -1.8965E+00 -3.2727E+00 4.3009E-01
S7 -7.5438E+01 5.7209E+01 -3.0815E+01 1.1500E+01 -2.8233E+00 4.0977E-01 -2.6621E-02
S8 -3.8841E+01 1.9602E+01 -6.9913E+00 1.7260E+00 -2.8081E-01 2.7094E-02 -1.1744E-03
S9 -3.3143E-01 8.3134E-02 -1.5188E-02 1.9610E-03 -1.6936E-04 8.7699E-06 -2.0576E-07
S10 -5.1033E-03 -2.8535E-03 1.1541E-03 -2.1518E-04 2.3034E-05 -1.3638E-06 3.4785E-08
TABLE 21
Fig. 14a shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 14b shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 7. Fig. 14c shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different image heights. Fig. 14d shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 7, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. As can be seen from fig. 14a to 14d, the optical imaging lens according to embodiment 7 can achieve good imaging quality.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, improvements, equivalents, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (26)

1. An optical imaging lens, in order from an object side to an image side along an optical axis, comprising:
a first lens having an optical power;
a second lens having an optical power;
a third lens having a refractive power, an image-side surface of which is concave;
a fourth lens having an optical power;
a fifth lens with focal power, wherein the image side surface of the fifth lens is convex;
air space is arranged between every two adjacent lenses;
comprises a glass aspheric surface;
wherein, the on-axis distance TTL from the object-side surface of the first lens element to the imaging surface, the effective focal length f of the optical imaging lens, and the maximum field angle FOV of the optical imaging lens satisfy: TTL/f × tan (FOV/2) < 1.3.
2. The optical imaging lens according to claim 1, characterized in that: an effective focal length f5 of the fifth lens, a radius of curvature R9 of the object-side surface of the fifth lens, and a radius of curvature R10 of the image-side surface of the fifth lens satisfy: 0< f5/(R9+ R10) < 0.8.
3. The optical imaging lens according to claim 1, characterized in that: a radius of curvature R1 of the first lens object-side surface and a radius of curvature R2 of the first lens image-side surface satisfy: 0< R1/R2< 0.7.
4. The optical imaging lens according to claim 1, characterized in that: the effective focal length f of the optical imaging lens and the curvature radius R6 of the image side surface of the third lens meet the following conditions: 0.3< f/R6< 1.3.
5. The optical imaging lens according to claim 1, characterized in that: the central thickness CT5 of the fifth lens on the optical axis and the central thickness CT4 of the fourth lens on the optical axis satisfy that: 0.57 is less than or equal to CT5/CT4< 1.
6. The optical imaging lens according to claim 1, characterized in that: the first-to-second on-axis distance T12 and the third-to-fourth on-axis distance T34 satisfy: 0< T12/T34 is less than or equal to 0.71.
7. The optical imaging lens according to claim 1, characterized in that: the on-axis distance T23 of the second to third lenses, the on-axis distance T45 of the fourth to fifth lenses, and the center thickness CT1 of the first lens on the optical axis satisfy: 1 ≦ (T23+ T45)/CT1< 1.5.
8. The optical imaging lens according to claim 1, characterized in that: the effective semi-aperture DT21 of the object side surface of the second lens and the effective semi-aperture DT12 of the image side surface of the first lens meet the following conditions: DT21/DT12 is not less than 1.01.
9. The optical imaging lens according to claim 1, characterized in that: the effective semi-aperture DT22 of the image side surface of the second lens and the effective semi-aperture DT31 of the object side surface of the third lens meet the following conditions: 0.6< DT22/DT31 <1.
10. The optical imaging lens according to claim 1, characterized in that: the effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens and the effective focal length f4 of the fourth lens satisfy: 1< f/f1+ f/f4< 2.
11. The optical imaging lens according to claim 1, characterized in that: the sum Sigma AT of air intervals on the optical axis between any two adjacent lenses with optical power in the first lens to the lens closest to the imaging surface and the maximum field angle FOV of the optical imaging lens meet the following conditions: 1.04mm ≦ Σ AT/tan (FOV/2) <2 mm.
12. The optical imaging lens according to claim 1, characterized in that: the on-axis distance SAG21 between the intersection point of the second lens object-side surface and the optical axis and the effective radius vertex of the second lens object-side surface and the effective semi-aperture DT32 of the third lens image-side surface satisfy that: 0< SAG21/DT32< 0.6.
13. The optical imaging lens according to claim 1, characterized in that: an on-axis distance SAG41 between an intersection point of the fourth lens object-side surface and the optical axis and an effective radius vertex of the fourth lens object-side surface and an on-axis distance SAG42 between an intersection point of the fourth lens image-side surface and the optical axis and an effective radius vertex of the fourth lens image-side surface satisfy: 0< SAG41/SAG42< 0.6.
14. An optical imaging lens, in order from an object side to an image side along an optical axis, comprising:
a first lens having an optical power;
a second lens having an optical power;
a third lens having a refractive power, an image-side surface of which is concave;
a fourth lens having an optical power;
a fifth lens with focal power, wherein the image side surface of the fifth lens is convex;
air space is arranged between every two adjacent lenses;
comprises a glass aspheric surface;
the effective focal length f of the optical imaging lens and the curvature radius R6 of the image side surface of the third lens meet the following conditions: 0.3< f/R6< 1.3.
15. The optical imaging lens according to claim 14, characterized in that: the on-axis distance TTL from the object side surface of the first lens to the imaging surface, the effective focal length f of the optical imaging lens and the maximum field angle FOV of the optical imaging lens meet the following requirements: TTL/f × tan (FOV/2) < 1.3.
16. The optical imaging lens according to claim 14, characterized in that: an effective focal length f5 of the fifth lens, a radius of curvature R9 of the object-side surface of the fifth lens, and a radius of curvature R10 of the image-side surface of the fifth lens satisfy: 0< f5/(R9+ R10) < 0.8.
17. The optical imaging lens according to claim 14, characterized in that: a radius of curvature R1 of the first lens object-side surface and a radius of curvature R2 of the first lens image-side surface satisfy: 0< R1/R2< 0.7.
18. The optical imaging lens according to claim 14, characterized in that: the central thickness CT5 of the fifth lens on the optical axis and the central thickness CT4 of the fourth lens on the optical axis satisfy that: 0.57 is less than or equal to CT5/CT4< 1.
19. The optical imaging lens according to claim 14, characterized in that: the first-to-second on-axis distance T12 and the third-to-fourth on-axis distance T34 satisfy: 0< T12/T34 is less than or equal to 0.71.
20. The optical imaging lens according to claim 14, characterized in that: the on-axis distance T23 of the second to third lenses, the on-axis distance T45 of the fourth to fifth lenses, and the center thickness CT1 of the first lens on the optical axis satisfy: 1 ≦ (T23+ T45)/CT1< 1.5.
21. The optical imaging lens according to claim 14, characterized in that: the effective semi-aperture DT21 of the object side surface of the second lens and the effective semi-aperture DT12 of the image side surface of the first lens meet the following conditions: DT21/DT12 is not less than 1.01.
22. The optical imaging lens according to claim 14, characterized in that: the effective semi-aperture DT22 of the image side surface of the second lens and the effective semi-aperture DT31 of the object side surface of the third lens meet the following conditions: 0.6< DT22/DT31 <1.
23. The optical imaging lens according to claim 14, characterized in that: the effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens and the effective focal length f4 of the fourth lens satisfy: 1< f/f1+ f/f4< 2.
24. The optical imaging lens according to claim 14, characterized in that: the sum Sigma AT of air intervals on the optical axis between any two adjacent lenses with optical power in the first lens to the lens closest to the imaging surface and the maximum field angle FOV of the optical imaging lens meet the following conditions: 1.04mm ≦ Σ AT/tan (FOV/2) <2 mm.
25. The optical imaging lens according to claim 14, characterized in that: the on-axis distance SAG21 between the intersection point of the second lens object-side surface and the optical axis and the effective radius vertex of the second lens object-side surface and the effective semi-aperture DT32 of the third lens image-side surface satisfy that: 0< SAG21/DT32< 0.6.
26. The optical imaging lens according to claim 14, characterized in that: an on-axis distance SAG41 between an intersection point of the fourth lens object-side surface and the optical axis and an effective radius vertex of the fourth lens object-side surface and an on-axis distance SAG42 between an intersection point of the fourth lens image-side surface and the optical axis and an effective radius vertex of the fourth lens image-side surface satisfy: 0< SAG41/SAG42< 0.6.
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