CN114265180A - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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Publication number
CN114265180A
CN114265180A CN202210001207.5A CN202210001207A CN114265180A CN 114265180 A CN114265180 A CN 114265180A CN 202210001207 A CN202210001207 A CN 202210001207A CN 114265180 A CN114265180 A CN 114265180A
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lens
optical imaging
imaging lens
image
optical
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CN202210001207.5A
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CN114265180B (en
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谢丽
黄林
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 application discloses optical imaging lens includes following preface from object side to image side along optical axis: a first lens; a second lens; a third lens; a fourth lens having a negative optical power; a fifth lens; and a sixth lens. The distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens along the optical axis and the half of the diagonal length ImgH of the effective pixel area on the imaging surface satisfy that: TTL/ImgH < 1.3. The f-number Fno of the optical imaging lens meets the following requirements: fno < 1.8.

Description

Optical imaging lens
Technical Field
The present application relates to the field of optical elements, and more particularly, to an optical imaging lens.
Background
At present, requirements of mobile phone markets for photographing are continuously improved, a main camera of a mainstream mobile phone flagship machine basically reaches more than 4800 ten thousand pixels, and six or seven lens architectures are adopted, which is a development trend of future high-end camera mobile phones. It is well known that the larger the pixel, the larger the image plane. Moreover, on the basis of ensuring the performance, the total optical length of the lens should be as small as possible, which is a technical challenge for lens manufacturers. Therefore, an optical imaging lens with characteristics of large aperture, small FNO, ultra-thin and the like and good imaging quality is needed in the market at present so as to better meet the requirements of manufacturers of intelligent devices such as mobile phones and the like.
Disclosure of Invention
The present application provides an optical imaging lens, sequentially comprising, from an object side to an image side along an optical axis: a first lens; a second lens; a third lens; a fourth lens having a negative optical power; a fifth lens; and a sixth lens. The distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens along the optical axis and the half of the diagonal length ImgH of the effective pixel area on the imaging surface can satisfy the following conditions: TTL/ImgH < 1.3. The f-number Fno of the optical imaging lens can meet the following requirements: fno < 1.8.
In one embodiment, the optical imaging lens further includes a diaphragm, and the entrance pupil diameter EPD of the optical imaging lens and the distance SL from the diaphragm to the imaging surface of the optical imaging lens along the optical axis may satisfy: 0.5< EPD/SL < 0.6.
In one embodiment, a half ImgH of a diagonal length of an effective pixel area on an imaging surface of the optical imaging lens, a distance TD along the optical axis from an object side surface of the first lens to an image side surface of the sixth lens, and a half Semi-FOV of a maximum field angle of the optical imaging lens may satisfy: 1< ImgH/(TD × TAN (Semi-FOV)) < 1.1.
In one embodiment, the effective focal length f1 of the first lens and the effective focal length f of the optical imaging lens satisfy: 0.95< f1/f < 1.1.
In one embodiment, the effective focal length f5 of the fifth lens, the effective focal length f6 of the sixth lens, and the combined focal length f56 of the fifth lens and the sixth lens may satisfy: 0.6< (f5-f6)/f56 <1.
In one embodiment, the effective focal length f6 of the sixth lens and the effective focal length f4 of the fourth lens may satisfy: 0.6< f6/f4< 1.
In one embodiment, the combined focal length f12 of the first and second lenses and the effective focal length f2 of the second lens may satisfy: 0.3< | f12/f2| < 0.7.
In one embodiment, a radius of curvature R7 of an object-side surface of the fourth lens, a radius of curvature R8 of an image-side surface of the fourth lens, and an effective focal length f4 of the fourth lens may satisfy: 1.3< (R7+ R8)/f4< 1.7.
In one embodiment, the radius of curvature R2 of the image-side surface of the first lens, the radius of curvature R1 of the object-side surface of the first lens, the radius of curvature R11 of the object-side surface of the sixth lens, and the radius of curvature R12 of the image-side surface of the sixth lens may satisfy: 1.9< (R2-R1)/(R11-R12) < 2.8.
In one embodiment, a radius of curvature R1 of the object-side surface of the first lens and a radius of curvature R12 of the image-side surface of the sixth lens may satisfy: 1< R1/R12< 1.2.
In one embodiment, a radius of curvature R7 of the object-side surface of the fourth lens and a radius of curvature R11 of the object-side surface of the sixth lens may satisfy: 0.9< | R7/R11| < 1.3.
In one embodiment, a sum Σ ET of edge thicknesses of the first lens to the sixth lens and a sum Σ AT of a separation distance on the optical axis of any adjacent two lenses of the first lens to the sixth lens may satisfy: 1 ≦ Σ ET/Σ AT < 1.2.
In one embodiment, the edge thickness ET1 of the first lens and the edge thickness ET2 of the second lens may satisfy: 0.6< ET1/ET2< 0.8.
In one embodiment, the edge thickness ET4 of the fourth lens and the center thickness CT4 of the fourth lens on the optical axis may satisfy: 1< ET4/CT4< 1.2.
In one embodiment, a distance BFL between an image side surface of the sixth lens element and an image plane of the optical imaging lens along the optical axis and a sum Σ AT of a distance between any two adjacent lenses of the first lens element to the sixth lens element on the optical axis may satisfy: 0.5< BFL/SIGMA AT < 0.7.
In one embodiment, a center thickness CT1 of the first lens on the optical axis, a center thickness CT3 of the third lens on the optical axis, and a center thickness CT5 of the fifth lens on the optical axis and a center thickness CT6 of the sixth lens on the optical axis may satisfy: 0.7< (CT1+ CT3)/(CT5+ CT6) <1.
In one embodiment, a sum Σ AT of a spacing distance T45 on the optical axis of the fourth lens and the fifth lens, a spacing distance T56 on the optical axis of the fifth lens and the sixth lens, and a spacing distance on the optical axis of any adjacent two lenses of the first lens to the sixth lens may satisfy: 0.45< (T45+ T56)/[ sigma ] AT < 0.55.
In one embodiment, a distance Tr11r41 between the object-side surface of the first lens and the object-side surface of the fourth lens along the optical axis and a distance TD between the object-side surface of the first lens and the image-side surface of the sixth lens along the optical axis satisfy: tr11r41/TD is more than or equal to 0.45 and less than or equal to 0.5.
In one embodiment, the maximum effective radius DT11 of the object-side surface of the first lens and the maximum effective radius DT62 of the image-side surface of the sixth lens may satisfy: 0.35< DT11/DT62< 0.4.
In one embodiment, the maximum effective radius DT62 of the image-side surface of the sixth lens, the maximum effective radius DT42 of the image-side surface of the fourth lens, the maximum effective radius DT52 of the image-side surface of the fifth lens, and the maximum effective radius DT32 of the image-side surface of the third lens may satisfy: 1< (DT62-DT42)/(DT52-DT32) < 1.4.
In one embodiment, at least one of the first lens element to the sixth lens element is made of glass.
This application has adopted six formula camera lens frameworks, through rational distribution each lens focal power, the face type, the thickness of each lens of optimal selection and each lens interval distance etc. provides the optical imaging camera lens that has the beneficial effect of at least one of large aperture, little FNO, ultra-thin, the imaging quality is good etc. be favorable to satisfying the demand of smart machine manufacturers such as cell-phones better.
Drawings
Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments when taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic structural view of an optical imaging lens according to embodiment 1 of the present application;
fig. 2A to 2C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 1, respectively;
fig. 3 is a schematic structural view showing an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 2, respectively;
fig. 5 is a schematic structural view showing an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 3, respectively;
fig. 7 is a schematic structural view showing an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8C show an axial chromatic aberration curve, an astigmatism curve, and a distortion 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 10C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 5, respectively.
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. In this document, the surface of each lens closest to the subject is referred to as the object-side surface of the lens, and the surface of each lens closest to the image plane is referred to as 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, for example, six lenses, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The six lenses are arranged in order from the object side to the image side along the optical axis.
In an 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 may have a positive optical power or a negative optical power; the fourth lens may have a negative optical power; the fifth lens may have a positive power or a negative power; the sixth lens may have a positive power or a negative power.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy a conditional expression TTL/ImgH <1.3, where TTL is a distance along an optical axis from an object side surface of the first lens to an imaging surface of the optical imaging lens, and ImgH is a half of a diagonal length of an effective pixel area on the imaging surface. By controlling the ratio of the distance from the object side surface of the first lens to the imaging surface of the optical imaging lens along the optical axis to half of the diagonal length of the effective pixel area on the imaging surface within the range, the total size of the optical lens can be effectively reduced, the ultrathin characteristic and the miniaturization of the optical lens are facilitated, and the optical lens can be better suitable for more and more ultrathin electronic products in the market. More specifically, TTL and ImgH may satisfy 1.2< TTL/ImgH < 1.3. Illustratively, TTL can satisfy 5.4mm < TTL < 6.3mm, and ImgH can satisfy 4.4mm < ImgH < 5.1 mm.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression Fno <1.8, where Fno is an f-number of the optical imaging lens. By controlling the aperture value of the optical imaging lens within the range, the lens has the characteristic of large aperture, which is beneficial to increasing the quantity of the entering light and improving the image quality. More specifically, Fno may satisfy Fno ≦ 1.78.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.5< EPD/SL <0.6, where EPD is an entrance pupil diameter of the optical imaging lens, and SL is a distance along an optical axis from a diaphragm of the optical imaging lens to an imaging surface of the optical imaging lens. The ratio of the diameter of the entrance pupil of the optical imaging lens to the distance from the diaphragm of the optical imaging lens to the imaging surface of the optical imaging lens along the optical axis is controlled within the range, so that the imaging effect of the large aperture of the system can be realized, and the optical performance of the system is improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1< ImgH/(TD × TAN (Semi-FOV)) <1.1, where ImgH is a half of a diagonal length of an effective pixel region on an imaging plane of the optical imaging lens, TD is a distance along an optical axis from an object-side surface of the first lens to an image-side surface of the sixth lens, and Semi-FOV is a half of a maximum field angle of the optical imaging lens. By controlling the distance between half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens and the distance between the object side surface of the first lens and the image side surface of the sixth lens along the optical axis and half of the maximum field angle of the optical imaging lens to meet 1< ImgH/(TD × TAN (Semi-FOV)) <1.1, the imaging effect of a large image surface of the system can be realized, and further higher optical performance and better processing technology can be achieved. Illustratively, ImgH may satisfy 4.4mm < ImgH < 5.1mm, and Semi-FOV may satisfy 42.5 ° < Semi-FOV < 43.7 °.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.95< f1/f <1.1, where f1 is an effective focal length of the first lens, and f is an effective focal length of the optical imaging lens. By controlling the ratio of the effective focal length of the first lens to the effective focal length of the optical imaging lens in the range, the aberration correction capability of the system can be well improved, and the size of the optical lens can be effectively reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.6< (f5-f6)/f56<1, where f5 is an effective focal length of the fifth lens, f6 is an effective focal length of the sixth lens, and f56 is a combined focal length of the fifth lens and the sixth lens. By controlling the ratio of the difference between the effective focal length of the fifth lens and the effective focal length of the sixth lens to the combined focal length of the fifth lens and the sixth lens within the range, the imaging quality of the system can be improved, and the sensitivity of the system can be reduced. Illustratively, f56 may satisfy 15.7mm < f56< 19.6 mm.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.6< f6/f4<1, where f6 is an effective focal length of the sixth lens and f4 is an effective focal length of the fourth lens. By controlling the ratio of the effective focal length of the sixth lens to the effective focal length of the fourth lens within the range, the aberration of the whole system can be effectively reduced, the sensitivity of the system is reduced, the problem of poor manufacturability caused by overlarge effective focal length of the sixth lens is favorably avoided, and the problems of poor imaging quality and high sensitivity of the system caused by overlarge aperture of the fourth lens are favorably avoided.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.3< | f12/f2| <0.7, where f12 is a combined focal length of the first lens and the second lens, and f2 is an effective focal length of the second lens. By controlling the absolute value of the ratio of the combined focal length of the first lens and the second lens to the effective focal length of the second lens to be within the range, the focal power of the front two lenses can be reasonably distributed, the imaging quality of the system can be improved, and the size of the optical lens can be effectively reduced. Illustratively, f12 may satisfy 5.8mm < f12 < 8.1 mm.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.3< (R7+ R8)/f4<1.7, where R7 is a radius of curvature of an object-side surface of the fourth lens, R8 is a radius of curvature of an image-side surface of the fourth lens, and f4 is an effective focal length of the fourth lens. By controlling the ratio of the sum of the curvature radius of the object side surface of the fourth lens and the curvature radius of the image side surface of the fourth lens to the effective focal length of the fourth lens within the range, the size of the system can be effectively reduced, the focal power of the system can be reasonably distributed, the system cannot be excessively concentrated on the fourth lens, the aberration correction of other lenses is facilitated, and meanwhile, the fourth lens can keep better process processability.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.9< (R2-R1)/(R11-R12) <2.8, where R2 is a radius of curvature of an image-side surface of the first lens, R1 is a radius of curvature of an object-side surface of the first lens, R11 is a radius of curvature of an object-side surface of the sixth lens, and R12 is a radius of curvature of an image-side surface of the sixth lens. By controlling the ratio of the difference between the curvature radius of the image-side surface of the first lens element and the curvature radius of the object-side surface of the first lens element to the difference between the curvature radius of the object-side surface of the sixth lens element and the curvature radius of the image-side surface of the sixth lens element within this range, the overall length of the system can be reduced, the field angle of the lens structure can be increased, the angular magnification can be increased, and clearer image-taking details can be presented.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1< R1/R12<1.2, where R1 is a radius of curvature of an object-side surface of the first lens and R12 is a radius of curvature of an image-side surface of the sixth lens. By controlling the ratio of the curvature radius of the object side surface of the first lens to the curvature radius of the image side surface of the sixth lens to be in the range, astigmatism and coma between the first lens and the sixth lens can be effectively balanced, and the lens can keep better imaging quality.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.9< | R7/R11| <1.3, where R7 is a radius of curvature of an object-side surface of the fourth lens and R11 is a radius of curvature of an object-side surface of the sixth lens. By controlling the absolute value of the ratio of the curvature radius of the object side surface of the fourth lens element to the curvature radius of the object side surface of the sixth lens element within this range, the imaging space can be increased, the aberration of the peripheral field can be reduced, and the image quality can be improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1 ≦ Σ ET/Σ AT <1.2, where Σ ET is a sum of edge thicknesses of the first lens to the sixth lens, and Σ AT is a sum of separation distances on an optical axis of any adjacent two lenses of the first lens to the sixth lens. By controlling the ratio of the sum of the edge thicknesses of the first lens to the sixth lens to the sum of the spacing distances of any two adjacent lenses in the first lens to the sixth lens on the optical axis within the range, the system is favorably miniaturized, the ghost risk of the system is favorably reduced, and the chromatic aberration of the system can be effectively reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.6< ET1/ET2<0.8, where ET1 is the edge thickness of the first lens and ET2 is the edge thickness of the second lens. By controlling the ratio of the edge thickness of the first lens to the edge thickness of the second lens within this range, difficulties in processing due to excessive thinness of the first and second lenses can be avoided.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1< ET4/CT4<1.2, where ET4 is an edge thickness of the fourth lens and CT4 is a center thickness of the fourth lens on an optical axis. By controlling the ratio of the edge thickness of the fourth lens to the center thickness of the fourth lens on the optical axis within this range, the thickness sensitivity of the lens can be reduced, and curvature of field can be corrected.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.5< BFL/∑ AT <0.7, where BFL is a distance along an optical axis from an image side surface of the sixth lens to an imaging surface of the optical imaging lens, and Σ AT is a sum of separation distances on the optical axis of any adjacent two lenses of the first lens to the sixth lens. The ratio of the distance from the image side surface of the sixth lens to the imaging surface of the optical imaging lens along the optical axis to the sum of the spacing distances of any two adjacent lenses in the first lens to the sixth lens on the optical axis is controlled within the range, so that the ultra-thin characteristic of the system is favorably realized, and the actual processing difficulty caused by over-short back focus of the lens can be avoided.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.7< (CT1+ CT3)/(CT5+ CT6) <1, where CT1 is a central thickness of the first lens on the optical axis, CT3 is a central thickness of the third lens on the optical axis, CT5 is a central thickness of the fifth lens on the optical axis, and CT6 is a central thickness of the sixth lens on the optical axis. By controlling the ratio of the sum of the central thickness of the first lens on the optical axis and the central thickness of the third lens on the optical axis to the sum of the central thickness of the fifth lens on the optical axis and the central thickness of the sixth lens on the optical axis to be in the range, the central thicknesses of the first lens, the third lens, the fifth lens and the sixth lens can be reasonably distributed, the longitudinal spherical aberration of the system can be improved, the ghost image at the center of the image plane can be improved, and meanwhile, the stability of the system structure can be enhanced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.45< (T45+ T56)/∑ AT <0.55, where T45 is a separation distance of the fourth lens and the fifth lens on the optical axis, T56 is a separation distance of the fifth lens and the sixth lens on the optical axis, and Σ AT is a sum of separation distances of any adjacent two lenses of the first lens to the sixth lens on the optical axis. The ratio of the sum of the spacing distance of the fourth lens and the fifth lens on the optical axis to the sum of the spacing distance of the fifth lens and the sixth lens on the optical axis to the sum of the spacing distance of any two adjacent lenses from the first lens to the sixth lens on the optical axis is controlled to be in the range, so that the optical lens can better balance the system chromatic aberration, can effectively control the distortion of the lens, can effectively reduce the ghost risk between the fourth lens and the fifth lens, and has more excellent imaging quality.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.45 ≦ Tr11r41/TD <0.5, where Tr11r41 is a distance along an optical axis from an object-side surface of the first lens to an object-side surface of the fourth lens, and TD is a distance along the optical axis from the object-side surface of the first lens to an image-side surface of the sixth lens. By controlling the ratio of the distance along the optical axis from the object side surface of the first lens to the object side surface of the fourth lens to the distance along the optical axis from the object side surface of the first lens to the image side surface of the sixth lens to be in the range, the gap between the lenses can be effectively distributed, and the sensitivity of the system is reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.35< DT11/DT62<0.4, where DT11 is a maximum effective radius of an object-side surface of the first lens and DT62 is a maximum effective radius of an image-side surface of the sixth lens. The ratio of the maximum effective radius of the object side surface of the first lens to the maximum effective radius of the image side surface of the sixth lens is controlled within the range, so that the chief ray angle of the optical imaging lens can be adjusted, the relative brightness of the optical imaging lens can be effectively improved, and the image plane definition is improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy conditional expression 1< (DT62-DT42)/(DT52-DT32) <1.4, where DT62 is a maximum effective radius of an image-side surface of the sixth lens, DT42 is a maximum effective radius of an image-side surface of the fourth lens, DT52 is a maximum effective radius of an image-side surface of the fifth lens, and DT32 is a maximum effective radius of an image-side surface of the third lens. By controlling the ratio of the difference between the maximum effective radius of the image side surface of the sixth lens and the maximum effective radius of the image side surface of the fourth lens to the difference between the maximum effective radius of the image side surface of the fifth lens and the maximum effective radius of the image side surface of the third lens to be within the range, the light flux of the lens can be effectively increased, the relative illumination of the system, particularly the marginal field of view, is improved, and the system still has good imaging quality in a dark environment.
In an exemplary embodiment, at least one of the first lens to the sixth lens is made of glass. At least one lens in first lens to sixth lens sets up to glass materials, can effectively reduce the sensitivity of lens group to the temperature, makes the camera lens have better temperature drift performance, is favorable to promoting the imaging performance of camera lens.
In an exemplary embodiment, the effective focal length f of the optical imaging lens may be, for example, in the range of 4.6mm to 5.4mm, the effective focal length f1 of the first lens may be, for example, in the range of 4.6mm to 5.6mm, the effective focal length f2 of the second lens may be, for example, in the range of-19.6 mm to-11.9 mm, the effective focal length f3 of the third lens may be, for example, in the range of 12.5mm to 21.4mm, the effective focal length f4 of the fourth lens may be, for example, in the range of-9.7 mm to-8.1 mm, the effective focal length f5 of the fifth lens may be, for example, in the range of 5.3mm to 7.6mm, and the effective focal length f6 of the sixth lens may be, for example, in the range of-8.4 mm to-5.2 mm.
In an exemplary embodiment, the optical imaging lens may further include at least one diaphragm. The diaphragm can restrict the light path and control the intensity of light. The stop may be disposed at an appropriate position as needed, for example, 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-described embodiment of the present application may employ a plurality of lenses, for example, six lenses as described above. By reasonably distributing the focal power, the surface type, the material and the center thickness of each lens, the on-axis distance between the lenses and the like, the optical imaging lens with the characteristics of large aperture, small FNO, ultra-thin property, good imaging quality and the like can be provided, and the high requirements of the market can be better met.
In the embodiments of the present application, the mirror surfaces of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens may have at least one aspherical mirror surface, that is, at least one aspherical mirror surface may be included from the object side surface of the first lens to the image side surface of the sixth lens. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics, and has advantages of improving distortion aberration and improving 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. 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, the fifth lens, and the sixth lens is an aspheric mirror surface. Optionally, each of the first, second, third, fourth, fifth, and sixth lenses has an object-side surface and an image-side surface that 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 six lenses are exemplified in the embodiment, the optical imaging lens is not limited to including six 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 2C. 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, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a filter E7.
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 convex 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 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 concave image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The optical imaging lens has an imaging surface S15, and light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging surface S15.
Table 1 shows basic parameters of the optical imaging lens of embodiment 1, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm).
Figure BDA0003454181400000071
Figure BDA0003454181400000081
TABLE 1
In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 through the sixth lens E6 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 BDA0003454181400000082
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. The high-order term coefficients A usable for the aspherical mirror surfaces S1 to S12 in example 1 are shown in Table 2-1 and Table 2-2 below4、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30。
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -2.0717E-02 1.4300E-01 -5.0207E-01 1.0624E+00 -1.4145E+00 1.2123E+00 -6.6532E-01
S2 -1.5905E-02 -1.0223E-02 1.2505E-01 -4.5715E-01 1.0176E+00 -1.5063E+00 1.5200E+00
S3 -3.7586E-02 -3.0798E-01 2.0492E+00 -7.2183E+00 1.6170E+01 -2.3637E+01 2.2160E+01
S4 -6.2646E-02 4.4571E-02 3.8232E-01 -4.1714E+00 2.2798E+01 -7.6469E+01 1.7030E+02
S5 -3.3714E-02 -1.0067E-01 6.4705E-01 -1.7513E+00 3.3293E-01 1.0720E+01 -3.3449E+01
S6 5.5606E-03 -2.1207E-01 7.5310E-01 -1.7219E+00 2.3703E+00 -1.8585E+00 5.0542E-01
S7 1.2304E-02 -2.3854E-01 7.2731E-01 -1.4215E+00 1.8371E+00 -1.5292E+00 7.3273E-01
S8 -9.7910E-02 2.3109E-02 -1.6707E-02 7.4973E-02 -1.1707E-01 9.6202E-02 -4.4301E-02
S9 -7.5504E-02 4.3166E-02 -3.9042E-02 2.3481E-02 -9.7656E-03 2.9983E-03 -6.8231E-04
S10 -1.4925E-03 3.3912E-02 -5.9050E-02 4.5825E-02 -2.3027E-02 8.2765E-03 -2.1950E-03
S11 -1.5776E-01 6.9884E-02 -2.8828E-02 1.0590E-02 -3.3890E-03 9.1398E-04 -1.9188E-04
S12 -1.7119E-01 8.8665E-02 -4.1819E-02 1.5340E-02 -4.1831E-03 8.3136E-04 -1.1933E-04
TABLE 2-1
Figure BDA0003454181400000083
Figure BDA0003454181400000091
Tables 2 to 2
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the convergent focus deviation 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 angles of view. As can be seen from fig. 2A to 2C, 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 4C. 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, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a filter E7.
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 convex 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 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 concave image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The optical imaging lens has an imaging surface S15, and light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging surface S15.
Table 3 shows basic parameters of the optical imaging lens of embodiment 2, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 4-1 and 4-2 show the high-order term coefficients A that can be used for the aspherical mirror surfaces S1 through S12 in example 24、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface shape can be defined by the formula (1) given in the above-described embodiment 1.
Figure BDA0003454181400000092
TABLE 3
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -2.4340E-02 1.7846E-01 -6.6347E-01 1.4795E+00 -2.0712E+00 1.8636E+00 -1.0728E+00
S2 -2.0029E-02 7.2440E-03 8.2812E-02 -4.5430E-01 1.2511E+00 -2.1368E+00 2.3981E+00
S3 -5.7418E-02 -1.9997E-01 1.5297E+00 -5.5161E+00 1.2248E+01 -1.6663E+01 1.1889E+01
S4 -6.9122E-02 -1.3068E-02 1.1526E+00 -9.1663E+00 4.4265E+01 -1.4178E+02 3.1435E+02
S5 -2.7010E-02 -1.9152E-01 1.0922E+00 -2.9741E+00 1.2958E+00 1.6013E+01 -5.5469E+01
S6 6.9474E-04 -1.8303E-01 5.5841E-01 -1.0063E+00 6.7085E-01 8.6584E-01 -2.5210E+00
S7 -2.4820E-03 -1.7626E-01 5.4825E-01 -1.1151E+00 1.5042E+00 -1.2553E+00 4.9212E-01
S8 -1.2207E-01 1.0445E-01 -2.1782E-01 4.0265E-01 -4.7116E-01 3.5491E-01 -1.7151E-01
S9 -8.6843E-02 6.7599E-02 -7.6825E-02 5.7490E-02 -2.8978E-02 1.0133E-02 -2.4553E-03
S10 -1.6041E-03 4.0626E-02 -7.5146E-02 6.1779E-02 -3.2638E-02 1.2263E-02 -3.3970E-03
S11 -1.6418E-01 7.5496E-02 -3.2702E-02 1.2638E-02 -4.2629E-03 1.2091E-03 -2.6595E-04
S12 -1.7783E-01 9.5119E-02 -4.6659E-02 1.7882E-02 -5.1100E-03 1.0648E-03 -1.6016E-04
TABLE 4-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 3.793E-01 -7.371E-02 5.497E-03 1.474E-04 0.000E+00 0.000E+00 0.000E+00
S2 -1.801E+00 8.973E-01 -2.846E-01 5.202E-02 -4.171E-03 0.000E+00 0.000E+00
S3 6.268E-01 -1.054E+01 1.129E+01 -6.447E+00 2.184E+00 -4.149E-01 3.424E-02
S4 -4.930E+02 5.508E+02 -4.353E+02 2.376E+02 -8.524E+01 1.806E+01 -1.713E+00
S5 9.777E+01 -1.092E+02 8.143E+01 -4.058E+01 1.300E+01 -2.421E+00 1.992E-01
S6 2.874E+00 -1.971E+00 8.852E-01 -2.622E-01 4.780E-02 -4.127E-03 0.000E+00
S7 1.612E-01 -3.376E-01 2.125E-01 -7.500E-02 1.572E-02 -1.833E-03 9.156E-05
S8 5.157E-02 -8.606E-03 3.811E-04 1.261E-04 -2.306E-05 1.243E-06 0.000E+00
S9 4.010E-04 -4.144E-05 2.295E-06 -1.898E-08 -5.079E-09 2.644E-10 -4.777E-12
S10 7.013E-04 -1.075E-04 1.204E-05 -9.543E-07 5.045E-08 -1.588E-09 2.235E-11
S11 4.286E-05 -4.926E-06 3.966E-07 -2.175E-08 7.715E-10 -1.588E-11 1.431E-13
S12 1.725E-05 -1.314E-06 6.889E-08 -2.366E-09 4.793E-11 -4.352E-13 0.000E+00
TABLE 4-2
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the convergent focus deviation 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 angles of view. As can be seen from fig. 4A to 4C, 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 6C. 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, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a filter E7.
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 convex 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 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. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The optical imaging lens has an imaging surface S15, and light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging surface S15.
Table 5 shows basic parameters of the optical imaging lens of embodiment 3, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 6-1 and 6-2 show the high-order term coefficients A that can be used for the aspherical mirror surfaces S1 to S12 in example 34、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface shape can be defined by the formula (1) given in the above-described embodiment 1.
Figure BDA0003454181400000111
TABLE 5
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -1.4435E-02 8.7471E-02 -2.6721E-01 5.0291E-01 -6.0139E-01 4.6473E-01 -2.2916E-01
S2 -2.0010E-02 2.9190E-02 -7.3419E-02 9.2067E-02 6.0615E-02 -3.8106E-01 5.9299E-01
S3 -7.1517E-02 6.9870E-02 -1.3754E-01 4.0014E-01 -1.1194E+00 3.0981E+00 -6.7896E+00
S4 -3.9791E-02 -1.5436E-01 1.7921E+00 -1.0531E+01 4.2014E+01 -1.1770E+02 2.3610E+02
S5 -1.2646E-02 -3.2467E-01 1.9163E+00 -7.0919E+00 1.6807E+01 -2.6309E+01 2.7160E+01
S6 -3.0782E-02 -2.5605E-02 -8.6941E-02 6.9534E-01 -2.4899E+00 5.4424E+00 -8.0420E+00
S7 -1.1905E-02 -1.3399E-01 4.6615E-01 -1.0464E+00 1.5457E+00 -1.4661E+00 8.2122E-01
S8 -1.0874E-01 9.2688E-02 -2.2324E-01 4.0863E-01 -4.6527E-01 3.4762E-01 -1.7115E-01
S9 -6.3901E-02 3.6071E-02 -5.3791E-02 4.3819E-02 -1.7030E-02 -7.8012E-05 3.3475E-03
S10 1.4051E-02 2.5812E-02 -5.1683E-02 3.9097E-02 -1.8491E-02 6.1758E-03 -1.5324E-03
S11 -1.6490E-01 7.6177E-02 -3.3562E-02 1.2907E-02 -4.3815E-03 1.2681E-03 -2.8300E-04
S12 -1.8540E-01 9.8952E-02 -4.6965E-02 1.7232E-02 -4.7051E-03 9.3974E-04 -1.3612E-04
TABLE 6-1
Figure BDA0003454181400000112
Figure BDA0003454181400000121
TABLE 6-2
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the convergent focus deviation 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 angles of view. As can be seen from fig. 6A to 6C, 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 8C. 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, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a filter E7.
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 convex 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 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. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The optical imaging lens has an imaging surface S15, and light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging surface S15.
Table 7 shows basic parameters of the optical imaging lens of embodiment 4, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 8-1 and 8-2 show the high-order term coefficients A that can be used for the aspherical mirror surfaces S1 to S12 in example 44、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface shape can be defined by the formula (1) given in the above-described embodiment 1.
Figure BDA0003454181400000122
Figure BDA0003454181400000131
TABLE 7
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -1.1698E-02 9.8820E-02 -4.1981E-01 1.1438E+00 -2.0033E+00 2.2755E+00 -1.6546E+00
S2 9.6588E-04 -2.3918E-01 1.2339E+00 -3.7063E+00 7.2658E+00 -9.7246E+00 9.1158E+00
S3 -1.0346E-01 2.3923E-01 -1.1732E+00 4.8829E+00 -1.4482E+01 3.2901E+01 -5.9479E+01
S4 -1.0691E-01 5.4714E-01 -2.1871E+00 -8.5067E-01 5.9600E+01 -3.3080E+02 1.0149E+03
S5 -9.6977E-02 6.7024E-01 -6.5282E+00 3.5913E+01 -1.2510E+02 2.8998E+02 -4.6010E+02
S6 -8.5854E-02 3.6918E-01 -2.5487E+00 1.0425E+01 -2.9277E+01 5.8480E+01 -8.4909E+01
S7 1.0976E-02 -3.6951E-01 1.1088E+00 -1.9293E+00 1.7451E+00 1.3151E-01 -2.5625E+00
S8 -8.8563E-02 -1.8774E-01 4.5737E-01 -4.8143E-01 2.1136E-01 1.0836E-01 -1.9784E-01
S9 -4.5050E-02 -1.4360E-01 3.6916E-01 -5.8615E-01 6.1883E-01 -4.4167E-01 2.1562E-01
S10 2.6832E-02 2.6702E-02 -8.6920E-02 8.3630E-02 -4.9013E-02 2.0380E-02 -6.4001E-03
S11 -2.2658E-01 1.3086E-01 -7.2838E-02 3.5921E-02 -1.5544E-02 5.5805E-03 -1.5145E-03
S12 -2.5614E-01 1.6981E-01 -9.8668E-02 4.4034E-02 -1.4543E-02 3.5021E-03 -6.1143E-04
TABLE 8-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 7.3606E-01 -1.7837E-01 1.6076E-02 6.7864E-04 0.0000E+00 0.0000E+00 0.0000E+00
S2 -6.0556E+00 2.8328E+00 -8.9841E-01 1.7427E-01 -1.5548E-02 0.0000E+00 0.0000E+00
S3 8.4932E+01 -9.2651E+01 7.4125E+01 -4.1545E+01 1.5318E+01 -3.3206E+00 3.1961E-01
S4 -2.0334E+03 2.7986E+03 -2.6763E+03 1.7523E+03 -7.5036E+02 1.8952E+02 -2.1420E+01
S5 5.0490E+02 -3.8079E+02 1.9232E+02 -6.1495E+01 1.1080E+01 -8.3558E-01 1.3769E-06
S6 9.0690E+01 -7.1573E+01 4.1566E+01 -1.7439E+01 5.0461E+00 -9.0574E-01 7.5962E-02
S7 3.6917E+00 -3.0250E+00 1.6201E+00 -5.7711E-01 1.3207E-01 -1.7599E-02 1.0388E-03
S8 1.1265E-01 -3.0914E-02 2.8609E-03 5.6891E-04 -1.6764E-04 1.2314E-05 0.0000E+00
S9 -7.1983E-02 1.6131E-02 -2.3165E-03 1.9240E-04 -7.0380E-06 2.3487E-09 -4.9845E-11
S10 1.5564E-03 -2.9200E-04 4.1048E-05 -4.1107E-06 2.7162E-07 -1.0375E-08 1.6767E-10
S11 2.9545E-04 -4.0712E-05 3.9171E-06 -2.5726E-07 1.0986E-08 -2.7480E-10 3.0508E-12
S12 7.6931E-05 -6.8837E-06 4.2638E-07 -1.7357E-08 4.1766E-10 -4.5046E-12 0.0000E+00
TABLE 8-2
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the convergent focus deviation 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 angles of view. As can be seen from fig. 8A to 8C, 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 10C. 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, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a filter E7.
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 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 concave image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The optical imaging lens has an imaging surface S15, and light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging surface S15.
Table 9 shows basic parameters of the optical imaging lens of embodiment 5, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 10-1 and 10-2 show the high-order term coefficients A that can be used for the aspherical mirror surfaces S1 to S12 in example 54、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface shape can be defined by the formula (1) given in the above-described embodiment 1.
Figure BDA0003454181400000141
TABLE 9
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -2.7669E-02 1.8301E-01 -6.2610E-01 1.3028E+00 -1.7223E+00 1.4768E+00 -8.1619E-01
S2 -4.1032E-03 -2.8729E-02 1.4816E-01 -4.6756E-01 9.7138E-01 -1.3832E+00 1.3648E+00
S3 -1.1127E-01 3.7532E-01 -1.3444E+00 3.6912E+00 -7.3439E+00 1.1213E+01 -1.3950E+01
S4 -1.3397E-01 5.6040E-01 -3.1061E+00 1.3701E+01 -4.1880E+01 8.8840E+01 -1.3213E+02
S5 -4.0999E-02 -1.5971E-01 1.1313E+00 -3.8644E+00 6.1961E+00 2.8766E-01 -2.1890E+01
S6 -7.6904E-02 6.8031E-01 -4.1056E+00 1.5287E+01 -3.8485E+01 6.8219E+01 -8.7234E+01
S7 -2.0174E-02 -1.0070E-01 3.9665E-01 -9.2866E-01 1.3941E+00 -1.3053E+00 6.8889E-01
S8 -1.1643E-01 8.8703E-02 -1.2750E-01 1.6911E-01 -1.3836E-01 6.2616E-02 -7.1589E-03
S9 -7.8727E-02 6.0750E-02 -7.2407E-02 5.6623E-02 -2.9923E-02 1.1035E-02 -2.8593E-03
S10 3.4837E-03 2.5285E-02 -5.1521E-02 4.0966E-02 -2.0306E-02 7.0388E-03 -1.7786E-03
S11 -1.3724E-01 5.4877E-02 -2.3082E-02 1.0076E-02 -3.9510E-03 1.2208E-03 -2.7519E-04
S12 -1.4765E-01 6.7519E-02 -2.9561E-02 1.0774E-02 -3.1219E-03 6.9911E-04 -1.1936E-04
TABLE 10-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 2.7921E-01 -5.3182E-02 4.0890E-03 6.0315E-05 0.0000E+00 0.0000E+00 0.0000E+00
S2 -9.2907E-01 4.2648E-01 -1.2558E-01 2.1337E-02 -1.5840E-03 0.0000E+00 0.0000E+00
S3 1.4444E+01 -1.2059E+01 7.6467E+00 -3.4511E+00 1.0293E+00 -1.8034E-01 1.3992E-02
S4 1.3842E+02 -1.0147E+02 5.0897E+01 -1.6630E+01 3.1870E+00 -2.7162E-01 0.0000E+00
S5 4.7820E+01 -5.6667E+01 4.2576E+01 -2.0829E+01 6.4446E+00 -1.1459E+00 8.9146E-02
S6 8.1439E+01 -5.5568E+01 2.7414E+01 -9.5208E+00 2.2074E+00 -3.0654E-01 1.9271E-02
S7 -8.8349E-02 -1.4144E-01 1.1079E-01 -4.0411E-02 8.3354E-03 -9.3470E-04 4.4401E-05
S8 -7.9095E-03 4.8285E-03 -1.3161E-03 1.9730E-04 -1.5668E-05 5.1184E-07 0.0000E+00
S9 5.1365E-04 -6.1875E-05 4.6663E-06 -1.8534E-07 1.3225E-09 1.3389E-10 -2.2978E-12
S10 3.3240E-04 -4.5925E-05 4.6272E-06 -3.2995E-07 1.5735E-08 -4.4864E-10 5.7570E-12
S11 4.4122E-05 -4.9991E-06 3.9682E-07 -2.1585E-08 7.6656E-10 -1.6017E-11 1.4939E-13
S12 1.5413E-05 -1.4891E-06 1.0568E-07 -5.3321E-09 1.8057E-10 -3.6684E-12 3.3700E-14
TABLE 10-2
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the convergent focus deviation 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 angles of view. As can be seen from fig. 10A to 10C, the optical imaging lens according to embodiment 5 can achieve good imaging quality.
Further, in embodiments 1 to 5, the effective focal length f of the optical imaging lens, the effective focal length values f1 to f6 of the respective lenses, the combined focal length f12 of the first lens and the second lens, the combined focal length f56 of the fifth lens and the sixth lens, the distance TTL along the optical axis from the object-side surface of the first lens to the imaging plane of the optical imaging lens, half ImgH of the diagonal length of the effective pixel area on the imaging plane, half Semi-FOV of the maximum angle of view of the optical imaging lens, and the f-number Fno of the optical imaging lens are as shown in table 11.
Parameters/embodiments 1 2 3 4 5
f(mm) 5.32 5.13 5.29 4.63 5.26
f1(mm) 5.59 5.43 5.17 4.66 5.31
f2(mm) -16.53 -16.26 -18.67 -17.42 -11.92
f3(mm) 13.15 13.13 21.00 19.31 12.56
f4(mm) -8.44 -8.35 -8.69 -8.15 -9.68
f5(mm) 7.02 6.94 6.04 5.34 7.52
f6(mm) -7.74 -7.70 -6.20 -5.26 -8.39
f12(mm) 7.46 7.21 6.51 5.82 8.02
f56(mm) 16.78 16.35 16.62 15.76 17.61
TTL(mm) 6.20 6.00 6.20 5.48 6.20
ImgH(mm) 5.00 4.83 5.00 4.50 5.00
Semi-FOV(°) 42.89 42.91 42.78 43.49 42.87
Fno 1.78 1.76 1.78 1.78 1.78
TABLE 11
The conditional expressions in examples 1 to 5 satisfy the conditions shown in table 12, respectively.
Figure BDA0003454181400000151
Figure BDA0003454181400000161
TABLE 12
The present application also provides an imaging Device, which is provided with an electron sensing element to form an image, wherein the electron sensing element may be a Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (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 protection covered by the present application is not limited to the embodiments with a specific combination of the features described above, but also covers other embodiments with any combination of the features described above or their equivalents without departing from the scope of the present application. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (10)

1. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:
a first lens;
a second lens;
a third lens;
a fourth lens having a negative optical power;
a fifth lens; and
a sixth lens element having a first lens element and a second lens element,
the optical imaging lens satisfies:
TTL/ImgH <1.3, and
fno <1.8, where TTL is a distance along the optical axis from the object-side surface of the first lens element to the imaging surface of the optical imaging lens, ImgH is a half of a diagonal length of an effective pixel area on the imaging surface, and Fno is an f-number of the optical imaging lens.
2. The optical imaging lens of claim 1, further comprising a diaphragm, wherein the entrance pupil diameter EPD of the optical imaging lens and the distance SL along the optical axis from the diaphragm to the imaging surface of the optical imaging lens satisfy:
0.5<EPD/SL<0.6。
3. 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 TD from the object side surface of the first lens to the image side surface of the sixth lens along the optical axis, and the half Semi-FOV of the maximum field angle of the optical imaging lens satisfy:
1<ImgH/(TD×TAN(Semi-FOV))<1.1。
4. the optical imaging lens of claim 1, wherein the effective focal length f1 of the first lens and the effective focal length f of the optical imaging lens satisfy:
0.95<f1/f<1.1。
5. the optical imaging lens of claim 1, wherein the effective focal length f5 of the fifth lens, the effective focal length f6 of the sixth lens, and the combined focal length f56 of the fifth lens and the sixth lens satisfy:
0.6<(f5-f6)/f56<1。
6. the optical imaging lens of claim 1, wherein the effective focal length f6 of the sixth lens and the effective focal length f4 of the fourth lens satisfy:
0.6<f6/f4<1。
7. the optical imaging lens of claim 1, wherein the combined focal length f12 of the first and second lenses and the effective focal length f2 of the second lens satisfy:
0.3<|f12/f2|<0.7。
8. the optical imaging lens of claim 1, wherein the radius of curvature R7 of the object-side surface of the fourth lens, the radius of curvature R8 of the image-side surface of the fourth lens, and the effective focal length f4 of the fourth lens satisfy:
1.3<(R7+R8)/f4<1.7。
9. the optical imaging lens of claim 1, wherein the radius of curvature R2 of the image-side surface of the first lens, the radius of curvature R1 of the object-side surface of the first lens, the radius of curvature R11 of the object-side surface of the sixth lens, and the radius of curvature R12 of the image-side surface of the sixth lens satisfy:
1.9<(R2-R1)/(R11-R12)<2.8。
10. the optical imaging lens of claim 1, wherein the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R12 of the image-side surface of the sixth lens satisfy:
1<R1/R12<1.2。
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CN214427672U (en) * 2021-04-25 2021-10-19 浙江舜宇光学有限公司 Optical imaging lens
CN215264209U (en) * 2021-08-02 2021-12-21 浙江舜宇光学有限公司 Optical imaging lens

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106249389A (en) * 2015-06-08 2016-12-21 株式会社光学逻辑 Pick-up lens
CN107272151A (en) * 2016-04-04 2017-10-20 康达智株式会社 Pick-up lens
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