CN114265180B - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

Info

Publication number
CN114265180B
CN114265180B CN202210001207.5A CN202210001207A CN114265180B CN 114265180 B CN114265180 B CN 114265180B CN 202210001207 A CN202210001207 A CN 202210001207A CN 114265180 B CN114265180 B CN 114265180B
Authority
CN
China
Prior art keywords
lens
optical imaging
optical
imaging lens
satisfy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202210001207.5A
Other languages
Chinese (zh)
Other versions
CN114265180A (en
Inventor
谢丽
黄林
戴付建
赵烈烽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Sunny Optics Co Ltd
Original Assignee
Zhejiang Sunny Optics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Sunny Optics Co Ltd filed Critical Zhejiang Sunny Optics Co Ltd
Priority to CN202210001207.5A priority Critical patent/CN114265180B/en
Publication of CN114265180A publication Critical patent/CN114265180A/en
Application granted granted Critical
Publication of CN114265180B publication Critical patent/CN114265180B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Lenses (AREA)

Abstract

The application discloses an optical imaging lens, which sequentially comprises the following components 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 negative optical power; a fifth lens; and a sixth lens. The distance TTL from the object side surface of the first lens element to the imaging surface of the optical imaging lens along the optical axis and half of the diagonal length ImgH of the effective pixel area on the imaging surface satisfy: TTL/ImgH <1.3. The f-number Fno of the optical imaging lens satisfies: 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, the requirements of the mobile phone market on photographing are continuously improved, the main camera of the main-flow mobile phone flagship machine basically reaches more than 4800 ten thousand pixels, and six-piece or seven-piece lens structures are adopted, so that the mobile phone flagship machine is also a development trend of high-end photographing mobile phones in the future. It is known that the larger the pixel, the larger the image plane. Moreover, on the basis of ensuring the performance, the smaller and better the optical total length of the lens is, which are all technical challenges facing lens manufacturers. Therefore, there is a need in the market for an optical imaging lens with characteristics of large aperture, small FNO, ultra-thin and good imaging quality, so as to better meet the requirements of manufacturers of smart devices such as mobile phones.
Disclosure of Invention
The application provides an optical imaging lens, which sequentially comprises the following components 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 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 half of the diagonal length ImgH of the effective pixel area on the imaging surface may satisfy: TTL/ImgH <1.3. The f-number Fno of the optical imaging lens can satisfy: 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 between the diaphragm and the imaging surface of the optical imaging lens along the optical axis may satisfy: 0.5< EPD/SL <0.6.
In one embodiment, half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens, the distance TD 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 Semi-FOV 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 may 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< (f 5-f 6)/f 56<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 lens and the second lens and the effective focal length f2 of the second lens may satisfy: 0.3< |f12/f2| <0.7.
In one embodiment, 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 may satisfy: 1.3< (R7+R8)/f 4<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, 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 may satisfy: 1< R1/R12<1.2.
In one embodiment, the radius of curvature R7 of the object-side surface of the fourth lens and the radius of curvature R11 of the object-side surface of the sixth lens may satisfy: 0.9< |R7/R11| <1.3.
In one embodiment, the sum Σet of the edge thicknesses of the first lens to the sixth lens and the sum Σat of the spacing distances on the optical axis between any adjacent two lenses of the first lens to the sixth lens may satisfy: sigma ET/Sigma 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, the sum Σat of the distance BFL between the image side surface of the sixth lens element and the imaging surface of the optical imaging lens element along the optical axis and the distance between any two adjacent lens elements of the first lens element and the sixth lens element on the optical axis may satisfy: 0.5< BFL/ΣAT <0.7.
In one embodiment, the center thickness CT1 of the first lens on the optical axis, the center thickness CT3 of the third lens on the optical axis, the center thickness CT5 of the fifth lens on the optical axis, and the 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 Σat of a separation distance T45 of the fourth lens and the fifth lens on the optical axis, a separation distance T56 of the fifth lens and the sixth lens on the optical axis, and a separation distance of any adjacent two lenses of the first lens to the sixth lens on the optical axis may satisfy: 0.45< (T45+T56)/(Sigma AT < 0.55).
In one embodiment, the distance Tr11r41 from the object side of the first lens to the object side of the fourth lens along the optical axis and the distance TD from the object side of the first lens to the image side of the sixth lens along the optical axis may 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 element, the maximum effective radius DT42 of the image side surface of the fourth lens element, the maximum effective radius DT52 of the image side surface of the fifth lens element, and the maximum effective radius DT32 of the image side surface of the third lens element may satisfy: 1< (DT 62-DT 42)/(DT 52-DT 32) <1.4.
In one embodiment, at least one of the first to sixth lenses is made of glass.
The application adopts a six-lens framework, and provides the optical imaging lens with at least one of large aperture, small FNO, ultra-thin, good imaging quality and the like by reasonably distributing the focal power of each lens, optimally selecting the surface and thickness of each lens, the interval distance between each lens and the like, thereby being beneficial to better meeting the demands of smart equipment manufacturers such as mobile phones and the like.
Drawings
Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application;
fig. 2A to 2C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve, respectively, of the optical imaging lens of embodiment 1;
fig. 3 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve, respectively, of the optical imaging lens of embodiment 2;
fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;
Fig. 6A to 6C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 shows a schematic configuration diagram of an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve, respectively, of the optical imaging lens of embodiment 4;
fig. 9 shows a schematic configuration diagram of an optical imaging lens according to embodiment 5 of the present application; and
fig. 10A to 10C show an on-axis 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 application, various aspects of the 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 application and is not intended to limit the scope of the 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 the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are 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, then 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 subject is referred to herein as the object side of the lens, and the surface of each lens closest to the imaging plane is referred to as the image side of the lens.
It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," 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. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the application, use of "may" means "one or more embodiments of the 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, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
The optical imaging lens according to the 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 sequentially arranged from the object side to the image side along the optical axis.
In an exemplary embodiment, the first lens may have positive or negative optical power; the second lens may have positive or negative optical power; the third lens may have positive or negative optical power; the fourth lens may have negative optical power; the fifth lens may have positive or negative optical power; the sixth lens may have positive or negative optical 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 from an object side surface of the first lens to an imaging surface of the optical imaging lens along an optical axis, 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 in the range, the total size of the optical lens can be effectively reduced, the ultrathin characteristic and miniaturization of the optical lens can be realized, and the optical lens can be better suitable for more ultrathin electronic products in the market. More specifically, TTL and ImgH can satisfy 1.2< TTL/ImgH <1.3. Illustratively, TTL may satisfy 5.4mm < TTL < 6.3mm and ImgH may satisfy 4.4mm < ImgH < 5.1mm.
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 in the range, the lens has the characteristic of large aperture, which is beneficial to increasing the quantity of the entering light rays and improving the image quality. More specifically, FNo may satisfy FNo.ltoreq.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 from a diaphragm of the optical imaging lens to an imaging surface of the optical imaging lens along an optical axis. The imaging effect of the large aperture of the system can be realized by controlling 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 in the range, so that the optical performance of the system is improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition 1< ImgH/(td×tan (Semi-FOV)) <1.1, where ImgH is half the diagonal length of the effective pixel region on the imaging plane of the optical imaging lens, TD is the distance along the optical axis from the object side surface of the first lens to the image side surface of the sixth lens, and Semi-FOV is half the maximum field angle of the optical imaging lens. By controlling 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 the half of the maximum field angle of the optical imaging lens to satisfy 1< ImgH/(TD×TAN (Semi-FOV)) <1.1, the imaging effect of the large image plane of the system can be realized, and further the imaging device has higher optical performance and better processing technology. 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< (f 5-f 6)/f 56<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 this range, it is possible to facilitate improvement of the imaging quality of the system and reduction of the sensitivity of the system. Illustratively, f56 may satisfy 15.7mm < f56< 19.6mm.
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 avoided, and the problems of poor imaging quality and higher sensitivity of the system caused by overlarge aperture of the fourth lens are 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 in the range, the focal power of the first 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 < 8.1mm.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.3< (r7+r8)/f 4<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 radius of curvature of the object side surface of the fourth lens to the radius of curvature 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 optical power of the system can be reasonably distributed, the optical power is not excessively concentrated on the fourth lens, aberration correction of other lenses is facilitated, and meanwhile, the fourth lens can maintain good process processability.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression of 1.9< (R2-R1)/(R11-R12) <2.8, wherein 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 radius of curvature of the image side surface of the first lens and the radius of curvature of the object side surface of the first lens to the difference between the radius of curvature of the object side surface of the sixth lens and the radius of curvature of the image side surface of the sixth lens in the range, the total length of the compression system can be facilitated, the angle of view of the lens structure can be increased, the angle magnification can be increased, and clearer shot details can be presented.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition 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 radius of curvature of the object side surface of the first lens to the radius of curvature of the image side surface of the sixth lens in this range, astigmatism and coma between the first lens and the sixth lens can be effectively balanced, so that the lens can maintain 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 the object side surface of the fourth lens and R11 is a radius of curvature of the object side surface of the sixth lens. The absolute value of the ratio of the curvature radius of the object side surface of the fourth lens to the curvature radius of the object side surface of the sixth lens is controlled within the range, so that the object space is increased, the aberration of the marginal view field is reduced, and the image quality is improved.
In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional expression 1 Σet/Σat <1.2, where Σet is the sum of the edge thicknesses of the first lens to the sixth lens and Σat is the sum of the spacing distances on the optical axis between any adjacent two lenses of the first lens to the sixth lens. The ratio of the sum of the edge thicknesses of the first lens to the sixth lens to the sum of the interval distances between any two adjacent lenses in the first lens to the sixth lens on the optical axis is controlled within the range, so that the miniaturization of the system is facilitated, the ghost image risk of the system is reduced, and meanwhile, 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 an edge thickness of the first lens and ET2 is an 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 the excessive thinness of the first lens and the second lens can be avoided.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition 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 the 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 the 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/Σat <0.7, where BFL is a distance between an image side surface of the sixth lens element and an imaging surface of the optical imaging lens element along an optical axis, Σat is a sum of distances between any adjacent two lens elements of the first lens element to the sixth lens element on the optical axis. 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 interval distances between any two adjacent lenses in the first lens and the sixth lens on the optical axis is controlled within the range, so that the ultrathin system characteristic is realized, and meanwhile, the actual processing difficulty caused by too 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 center thickness of the first lens on the optical axis, CT3 is a center thickness of the third lens on the optical axis, CT5 is a center thickness of the fifth lens on the optical axis, and CT6 is a center thickness of the sixth lens on the optical axis. By controlling the ratio of the sum of the center thickness of the first lens on the optical axis and the center thickness of the third lens on the optical axis to the sum of the center thickness of the fifth lens on the optical axis and the center thickness of the sixth lens on the optical axis within the range, the center 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 of the center of the image plane can be improved, and 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)/(Σat <0.55, where T45 is the distance between the fourth lens and the fifth lens on the optical axis, T56 is the distance between the fifth lens and the sixth lens on the optical axis, Σat is the sum of the distances between any adjacent two lenses of the first lens to the sixth lens on the optical axis. The ratio of the sum of the interval distance between the fourth lens and the fifth lens on the optical axis and the interval distance between the fifth lens and the sixth lens on the optical axis to the sum of the interval distances between any two adjacent lenses from the first lens to the sixth lens on the optical axis is controlled within the range, so that the optical lens can better balance the chromatic aberration of the system, the distortion amount of the lens can be effectively controlled, the ghost image risk between the fourth lens and the fifth lens can be effectively reduced, and the lens has more excellent imaging quality.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.45+.tr1r41/TD <0.5, where Tr11r41 is a distance from the object side of the first lens element to the object side of the fourth lens element along the optical axis, and TD is a distance from the object side of the first lens element to the image side of the sixth lens element along the optical axis. By controlling the ratio of the distance from the object side surface of the first lens element to the object side surface of the fourth lens element along the optical axis to the distance from the object side surface of the first lens element to the image side surface of the sixth lens element along the optical axis within this range, the gap between the lens elements can be effectively distributed, and the sensitivity of the system can be reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.35< d 11/DT62<0.4, where DT11 is the maximum effective radius of the object side surface of the first lens and DT62 is the maximum effective radius of the 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 in the range, so that the angle of the principal ray of the optical imaging lens can be adjusted, the relative brightness of the optical imaging lens can be effectively improved, and the definition of the image plane is improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition 1< (DT 62-DT 42)/(DT 52-DT 32) <1.4, wherein DT62 is the maximum effective radius of the image side of the sixth lens, DT42 is the maximum effective radius of the image side of the fourth lens, DT52 is the maximum effective radius of the image side of the fifth lens, and DT32 is the maximum effective radius of the image side 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 within the range, the lens throughput can be effectively increased, and the relative illuminance of the system, particularly the fringe field of view, can be improved, so that the system still has good imaging quality in the dark-light environment.
In an exemplary embodiment, at least one of the first lens to the sixth lens is made of glass. At least one lens of the first lens to the sixth lens is made of glass material, so that the sensitivity of the lens group to temperature can be effectively reduced, the lens has better temperature drift performance, and the imaging performance of the lens is improved.
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 diaphragm may be provided at an appropriate position as required, for example, 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 located on the imaging surface.
The optical imaging lens according to the above embodiment of the present application may employ a plurality of lenses, for example, six lenses as described above. Through the optical power, the face type, the material of each lens of rational distribution, the center thickness of each lens and the epaxial interval etc. between each lens, can provide an optical imaging lens that has characteristics such as big aperture, little FNO, ultra-thin and formation of image quality are good, be favorable to satisfying the high demand in market better.
In an embodiment of the present application, at least one of the mirrors of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element may have at least one aspherical mirror surface, i.e., at least one aspherical mirror surface may be included in the object-side surface of the first lens element to the image-side surface of the sixth lens element. The aspherical 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 a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring during imaging can be eliminated as much as possible, thereby improving 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, the fifth lens, and the sixth lens is an aspherical mirror surface. Optionally, the object side surface and the 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 are aspherical mirror surfaces.
However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens can be varied to achieve the various results and advantages described in this specification without departing from the technical solution claimed in the present application. For example, although six lenses are described as an example in the embodiment, the optical imaging lens is not limited to include six lenses. The optical imaging lens may also include other numbers of lenses, if desired.
Specific examples of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying 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 configuration diagram of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, and filter E7.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 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 curvature radius and thickness/distance is millimeter (mm).
TABLE 1
In embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are aspherical, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=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 aspherical i-th order. The following tables 2-1 and 2-2 give the higher order coefficients A that can be used for each of the aspherical mirror faces S1 to S12 in example 1 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 And A 30 。
Face number 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
TABLE 2-2
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve of the optical imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. 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 provided in 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 portions similar to embodiment 1 will be omitted for brevity. Fig. 3 shows a schematic configuration of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, and filter E7.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 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 curvature radius and thickness/distance is millimeter (mm). Tables 4-1 and 4-2 show the higher order coefficients A that can be used for each of the aspherical mirror surfaces S1 to S12 in example 2 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 And A 30 Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 3 Table 3
Face number 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
Face number 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 indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve of the optical imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. 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 provided in 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 configuration diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, and filter E7.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 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 curvature radius and thickness/distance is millimeter (mm). Tables 6-1 and 6-2 show the higher order term coefficients A that can be used for each of the aspherical mirror faces S1 to S12 in example 3 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 And A 30 Wherein each aspheric surfaceThe pattern may be defined by the formula (1) given in the above-mentioned embodiment 1.
TABLE 5
Face number 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
TABLE 6-2
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the optical imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. 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 provided in 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 configuration diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, and filter E7.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 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 curvature radius and thickness/distance is millimeter (mm). Tables 8-1 andtable 8-2 shows the higher order coefficients A that can be used for each of the aspherical mirrors S1 to S12 in example 4 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 And A 30 Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 7
Face number 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
Face number 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 indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve of the optical imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. 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 provided in 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 configuration of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, and filter E7.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 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 curvature radius and thickness/distance is millimeter (mm). Tables 10-1 and 10-2 show the higher order term coefficients A that can be used for each of the aspherical mirror faces S1 to S12 in example 5 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 And A 30 Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 9
Face number 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
Face number 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 indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve of the optical imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. 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 provided in 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 from the object side surface of the first lens to the imaging surface of the optical imaging lens along the optical axis, half of the diagonal length of the effective pixel area on the imaging surface ImgH, half of the maximum field angle Semi-FOV of the optical imaging lens, and the f-number Fno of the optical imaging lens are 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.
Table 12
The application also provides an imaging device provided with an electron-sensitive element for imaging, which can be a photosensitive coupling element (Charge Coupled Device, CCD) or a complementary metal-oxide-semiconductor element (Complementary Metal Oxide Semiconductor, CMOS). The imaging device may be a stand alone imaging device such as a digital camera or an imaging module integrated on a mobile electronic device such as a cell phone. The imaging device is equipped with the optical imaging lens described above.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the application is not limited to the specific combination of the above technical features, but also encompasses other technical features which may be combined with any combination of the above technical features or their equivalents without departing from the spirit of the application. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.

Claims (20)

1. The optical imaging lens is characterized by sequentially comprising, from an object side to an image side along an optical axis:
a first lens having positive optical power;
a second lens having negative optical power;
a third lens having positive optical power;
a fourth lens having negative optical power;
a fifth lens having positive optical power; and
a sixth lens having a negative optical power,
the optical imaging lens satisfies the following conditions:
TTL/ImgH<1.3，
0.6< f6/f4<1, and
fno <1.8, wherein TTL is a distance from an object side surface of the first lens to an imaging surface of the optical imaging lens along the optical axis, imgH is a half of a diagonal length of an effective pixel area on the imaging surface, f6 is an effective focal length of the sixth lens, f4 is an effective focal length of the fourth lens, and Fno is an f-number of the optical imaging lens;
the number of lenses having optical power in the optical imaging lens is six.
2. The optical imaging lens of claim 1, further comprising a stop, an entrance pupil diameter EPD of the optical imaging lens and a distance SL of the stop to an imaging surface of the optical imaging lens along the optical axis satisfying:
0.5<EPD/SL<0.6。
3. the optical imaging lens of claim 1, wherein a half of a diagonal length ImgH of an effective pixel region on an imaging surface of the optical imaging lens, a distance TD between an object side surface of the first lens and an image side surface of the sixth lens along the optical axis, and a half of a maximum field angle Semi-FOV of the optical imaging lens satisfy:
1<ImgH/(TD×TAN(Semi-FOV))<1.1。
4. The optical imaging lens of claim 1, wherein an effective focal length f1 of the first lens and an 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 an effective focal length f5 of the fifth lens, an effective focal length f6 of the sixth lens, and a 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 a combined focal length f12 of the first lens and the second lens and an effective focal length f2 of the second lens satisfy:
0.3<|f12/f2|<0.7。
7. the optical imaging lens of claim 1, wherein 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 satisfy:
1.3<(R7+R8)/f4<1.7。
8. the optical imaging lens of claim 1, wherein a radius of curvature R2 of an image side of the first lens, a radius of curvature R1 of an object side of the first lens, a radius of curvature R11 of an object side of the sixth lens, and a radius of curvature R12 of an image side of the sixth lens satisfy:
1.9<(R2-R1)/(R11-R12)<2.8。
9. The optical imaging lens of claim 1, wherein a radius of curvature R1 of an object side surface of the first lens and a radius of curvature R12 of an image side surface of the sixth lens satisfy:
1<R1/R12<1.2。
10. the optical imaging lens of claim 1, wherein a radius of curvature R7 of an object side surface of the fourth lens and a radius of curvature R11 of an object side surface of the sixth lens satisfy:
0.9<|R7/R11|<1.3。
11. the optical imaging lens according to any one of claims 1 to 10, wherein a sum Σet of edge thicknesses of the first lens to the sixth lens and a sum Σat of separation distances on the optical axis of any adjacent two lenses of the first lens to the sixth lens satisfy:
1≤∑ET/∑AT<1.2。
12. the optical imaging lens of any of claims 1 to 10, wherein an edge thickness ET1 of the first lens and an edge thickness ET2 of the second lens satisfy:
0.6<ET1/ET2<0.8。
13. the optical imaging lens according to any one of claims 1 to 10, wherein an edge thickness ET4 of the fourth lens and a center thickness CT4 of the fourth lens on the optical axis satisfy:
1<ET4/CT4<1.2。
14. the optical imaging lens according to any one of claims 1 to 10, wherein a sum Σat of a distance BFL along the optical axis from an image side surface of the sixth lens to an imaging surface of the optical imaging lens and a distance separating any adjacent two of the first lens to the sixth lens on the optical axis satisfies:
0.5<BFL/∑AT<0.7。
15. The optical imaging lens according to any one of claims 1 to 10, wherein a center thickness CT1 of the first lens on the optical axis, a center thickness CT3 of the third lens on the optical axis, 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 satisfy:
0.7<(CT1+CT3)/(CT5+CT6)<1。
16. the optical imaging lens according to any one of claims 1 to 10, wherein a sum Σat of a separation distance T45 of the fourth lens and the fifth lens on the optical axis, a separation distance T56 of the fifth lens and the sixth lens on the optical axis, and a separation distance of any adjacent two of the first lens to the sixth lens on the optical axis satisfies:
0.45<(T45+T56)/∑AT<0.55。
17. the optical imaging lens of any of claims 1 to 10, wherein a distance Tr11r41 from an object side surface of the first lens to an object side surface of the fourth lens along the optical axis and a distance TD from the object side surface of the first lens to an image side surface of the sixth lens along the optical axis satisfy:
0.45≤Tr11r41/TD<0.5。
18. the optical imaging lens of any of claims 1 to 10, wherein a maximum effective radius DT11 of an object-side surface of the first lens and a maximum effective radius DT62 of an image-side surface of the sixth lens satisfy:
0.35<DT11/DT62<0.4。
19. The optical imaging lens according to any one of claims 1 to 10, wherein a maximum effective radius DT62 of an image side surface of the sixth lens, a maximum effective radius DT42 of an image side surface of the fourth lens, and a maximum effective radius DT52 of an image side surface of the fifth lens, and a maximum effective radius DT32 of an image side surface of the third lens satisfy:
1<(DT62-DT42)/(DT52-DT32)<1.4。
20. the optical imaging lens according to any one of claims 1 to 10, wherein a material of at least one of the first lens to the sixth lens is glass.
CN202210001207.5A 2022-01-04 2022-01-04 Optical imaging lens Active CN114265180B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210001207.5A CN114265180B (en) 2022-01-04 2022-01-04 Optical imaging lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210001207.5A CN114265180B (en) 2022-01-04 2022-01-04 Optical imaging lens

Publications (2)

Publication Number Publication Date
CN114265180A CN114265180A (en) 2022-04-01
CN114265180B true CN114265180B (en) 2023-10-13

Family

ID=80832620

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210001207.5A Active CN114265180B (en) 2022-01-04 2022-01-04 Optical imaging lens

Country Status (1)

Country Link
CN (1) CN114265180B (en)

Citations (7)

* 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
CN109343204A (en) * 2018-12-13 2019-02-15 浙江舜宇光学有限公司 Optical imaging lens
CN212540857U (en) * 2020-08-19 2021-02-12 江西晶超光学有限公司 Optical lens group, image capturing device and electronic equipment
CN113433666A (en) * 2021-07-12 2021-09-24 浙江舜宇光学有限公司 Optical imaging lens
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

Patent Citations (7)

* 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
CN109343204A (en) * 2018-12-13 2019-02-15 浙江舜宇光学有限公司 Optical imaging lens
CN212540857U (en) * 2020-08-19 2021-02-12 江西晶超光学有限公司 Optical lens group, image capturing device and electronic equipment
CN214427672U (en) * 2021-04-25 2021-10-19 浙江舜宇光学有限公司 Optical imaging lens
CN113433666A (en) * 2021-07-12 2021-09-24 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

Also Published As

Publication number Publication date
CN114265180A (en) 2022-04-01

Similar Documents

Publication Publication Date Title
CN108681040B (en) Optical imaging lens group
CN113296244B (en) Camera optical system suitable for portable electronic product
CN107643586B (en) Image pickup lens group
CN107436481B (en) Image pickup lens group
CN108508581B (en) Optical imaging system
CN117741916A (en) Optical imaging lens group
CN110376710B (en) Optical imaging system
CN109254385B (en) Optical imaging lens
CN109358416B (en) Image pickup lens
CN116449535A (en) Image pickup lens
CN109358415B (en) Optical imaging lens
CN109613683B (en) Optical imaging system
CN110045488B (en) Optical imaging lens
CN110376720B (en) Optical imaging system
CN110286474B (en) Optical imaging system
CN113885179B (en) Image pickup lens group
CN109683286B (en) Optical imaging lens
CN110456485B (en) Image pickup lens group
CN110208925B (en) Optical imaging lens
CN109239894B (en) Optical imaging system
CN108279484B (en) Optical imaging system
CN110579864B (en) Optical imaging lens
CN113484994B (en) Optical imaging lens
CN108345092B (en) Optical imaging lens
CN108919468B (en) Optical imaging lens

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant