CN216411720U - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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CN216411720U
CN216411720U CN202123205200.5U CN202123205200U CN216411720U CN 216411720 U CN216411720 U CN 216411720U CN 202123205200 U CN202123205200 U CN 202123205200U CN 216411720 U CN216411720 U CN 216411720U
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lens
optical imaging
focal length
satisfy
effective focal
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吴旭炯
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 element with positive refractive power; a second lens element with negative refractive power; a third lens element with negative refractive power; a fourth lens element with positive refractive power; a fifth lens; a sixth lens; a seventh lens; and an eighth 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 < 1.35. And, there is a space between each adjacent lens on the optical axis.

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
In recent years, with the continuous development of electronic devices such as smart phones, consumers have higher and higher expectations for the performance of optical imaging lenses mounted on such electronic products, and in order to meet the market demands, miniaturized optical imaging systems have been continuously developed and advanced. In addition, the performance of the electronic photosensitive element is rapidly improved due to the progress of the semiconductor process, the requirement on the camera lens is higher and higher, and the camera lens needs to be developed towards the trend of large image plane and ultra-thinning in order to obtain better imaging effect and more precise process. Therefore, an optical imaging lens which has the characteristics of large image plane, large aperture, ultra-thin property and the like and can meet the design requirements of intelligent equipment manufacturers is needed in the market at present.
SUMMERY OF THE UTILITY MODEL
An aspect of the present disclosure provides an optical imaging lens, sequentially from an object side to an image side along an optical axis, comprising: a first lens element with positive refractive power; a second lens element with negative refractive power; a third lens element with negative refractive power; a fourth lens element with positive refractive power; a fifth lens; a sixth lens; a seventh lens; and an eighth 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 < 1.35. And, there is a space between each adjacent lens on the optical axis.
In one embodiment, the effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy: f/EPD < 1.8.
In one embodiment, the effective focal length f2 of the second lens and the effective focal length f1 of the first lens may satisfy: 2.0< | f2/f1| < 3.0.
In one embodiment, a radius of curvature R13 of an object-side surface of the seventh lens and a radius of curvature R14 of an image-side surface of the seventh lens and an effective focal length f7 of the seventh lens may satisfy: 1.0< | R13+ R14|/f7< 1.9.
In one embodiment, a separation distance T78 between the seventh lens and the eighth lens on the optical axis and a separation distance T45 between the fourth lens and the fifth lens on the optical axis may satisfy: 3.0< T78/T45< 4.3.
In one embodiment, the effective focal length f8 of the eighth lens and the effective focal length f7 of the seventh lens may satisfy: 0.9< | f8/f7| < 1.5.
In one embodiment, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens may satisfy: 2.0< R3/(R3-R4) < 2.8.
In one embodiment, the effective focal length f6 of the sixth lens, the effective focal length f7 of the seventh lens, the effective focal length f8 of the eighth lens, and the effective focal length f of the optical imaging lens may satisfy: 2.2< (| f6| + | f7| + | f8|)/f < 3.4.
In one embodiment, a combined focal length f23 of the second lens and the third lens and an effective focal length f of the optical imaging lens can satisfy: -2.5< f23/f < -1.5.
In one embodiment, the effective focal length f4 of the fourth lens and the effective focal length f1 of the first lens may satisfy: 1.8< | f4/f1| < 3.5.
In one embodiment, the half of the diagonal ImgH of the effective pixel area on the imaging plane and the maximum effective radius SD11 of the object side surface of the first lens may satisfy: 3.0< ImgH/SD11< 3.8.
In one embodiment, a combined focal length f678 of the sixth lens, the seventh lens and the eighth lens and an effective focal length f of the optical imaging lens may satisfy: 1.6< | f678/f | < 3.8.
In one embodiment, a separation distance T23 between the second lens and the third lens on the optical axis and a separation distance T45 between the fourth lens and the fifth lens on the optical axis may satisfy: 1.0< T23/T45< 1.8.
In one embodiment, the effective focal length f6 of the sixth lens and the effective focal length f8 of the eighth lens may satisfy: 1.0< f6/f8< 1.8.
In one embodiment, a central thickness CT5 of the fifth lens on the optical axis and a central thickness CT6 of the sixth lens on the optical axis and a separation distance T56 of the fifth lens and the sixth lens on the optical axis may satisfy: 1.0< (CT5+ CT6)/T56< 2.3.
Another aspect of the present disclosure provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens element with positive refractive power; a second lens element with negative refractive power; a third lens element with negative refractive power; a fourth lens; a fifth lens element having a concave object-side surface and a convex image-side surface; a sixth lens; a seventh lens; and an eighth lens. The half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens can satisfy: ImgH >6.0 mm. And, there is a space between each adjacent lens on the optical axis.
In one embodiment, the effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy: f/EPD < 1.8.
In one embodiment, the effective focal length f2 of the second lens and the effective focal length f1 of the first lens may satisfy: 2.0< | f2/f1| < 3.0.
In one embodiment, a radius of curvature R13 of an object-side surface of the seventh lens and a radius of curvature R14 of an image-side surface of the seventh lens and an effective focal length f7 of the seventh lens may satisfy: 1.0< | R13+ R14|/f7< 1.9.
In one embodiment, a separation distance T78 between the seventh lens and the eighth lens on the optical axis and a separation distance T45 between the fourth lens and the fifth lens on the optical axis may satisfy: 3.0< T78/T45< 4.3.
In one embodiment, the effective focal length f8 of the eighth lens and the effective focal length f7 of the seventh lens may satisfy: 0.9< | f8/f7| < 1.5.
In one embodiment, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens may satisfy: 2.0< R3/(R3-R4) < 2.8.
In one embodiment, the effective focal length f6 of the sixth lens, the effective focal length f7 of the seventh lens, the effective focal length f8 of the eighth lens, and the effective focal length f of the optical imaging lens may satisfy: 2.2< (| f6| + | f7| + | f8|)/f < 3.4.
In one embodiment, a combined focal length f23 of the second lens and the third lens and an effective focal length f of the optical imaging lens can satisfy: -2.5< f23/f < -1.5.
In one embodiment, the effective focal length f4 of the fourth lens and the effective focal length f1 of the first lens may satisfy: 1.8< | f4/f1| < 3.5.
In one embodiment, the half of the diagonal ImgH of the effective pixel area on the imaging plane and the maximum effective radius SD11 of the object side surface of the first lens may satisfy: 3.0< ImgH/SD11< 3.8.
In one embodiment, a combined focal length f678 of the sixth lens, the seventh lens and the eighth lens and an effective focal length f of the optical imaging lens may satisfy: 1.6< | f678/f | < 3.8.
In one embodiment, a separation distance T23 between the second lens and the third lens on the optical axis and a separation distance T45 between the fourth lens and the fifth lens on the optical axis may satisfy: 1.0< T23/T45< 1.8.
In one embodiment, the effective focal length f6 of the sixth lens and the effective focal length f8 of the eighth lens may satisfy: 1.0< f6/f8< 1.8.
In one embodiment, a central thickness CT5 of the fifth lens on the optical axis and a central thickness CT6 of the sixth lens on the optical axis and a separation distance T56 of the fifth lens and the sixth lens on the optical axis may satisfy: 1.0< (CT5+ CT6)/T56< 2.3.
The optical imaging lens has the beneficial effects of large image plane, large aperture, ultra-thin and the like, and is favorable for better meeting the design requirements of intelligent equipment manufacturers.
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 on-axis chromatic aberration curve, an astigmatic curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 1;
fig. 3 is a schematic structural view showing an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4C show an on-axis chromatic aberration curve, an astigmatic curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 2;
fig. 5 is a schematic structural view showing an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6C show an on-axis chromatic aberration curve, an astigmatic curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 is a schematic structural view showing an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8C show an on-axis chromatic aberration curve, an astigmatic curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 4;
fig. 9 is a schematic structural view showing an optical imaging lens according to embodiment 5 of the present application;
fig. 10A to 10C show an on-axis chromatic aberration curve, an astigmatic curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 5;
fig. 11 is a schematic structural view showing an optical imaging lens according to embodiment 6 of the present application;
fig. 12A to 12C show an on-axis chromatic aberration curve, an astigmatic curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 6;
fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application; and
fig. 14A to 14C show an on-axis chromatic aberration curve, an astigmatism curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 7.
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, eight lenses, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The eight lenses are arranged in order from an object side to an image side along an optical axis.
In an exemplary embodiment, the first lens element may have positive refractive power; the second lens element has negative refractive power; the third lens element with negative refractive power; the fourth lens element with positive refractive power; the fifth lens element with positive or negative refractive power; the sixth lens element with positive or negative refractive power; the seventh lens element with positive or negative refractive power; the eighth lens element with positive refractive power or negative refractive power.
In an exemplary embodiment, the object-side surface of the fifth lens element may be concave, and the image-side surface may be convex.
In an exemplary embodiment, adjacent lenses may have a space therebetween on the optical axis, respectively.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression TTL/ImgH <1.35, where TTL is a distance along the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens, and ImgH is half a diagonal length of the effective pixel area on the imaging surface. 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 is controlled within the range, so that the characteristic of ultra-thinning of the lens is favorably realized. Illustratively, TTL can satisfy 8.8mm < TTL < 9.6mm, and ImgH can satisfy 6.5mm < ImgH < 7.5 mm.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression ImgH >6.0mm, where ImgH is half the diagonal length of an effective pixel area on an imaging plane of the optical imaging lens. By controlling the value of half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens to be in the range, the lens has the characteristic of large image surface and high pixels. More specifically, the ImgH can satisfy ImgH ≧ 6.58 mm.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression f/EPD <1.8, where f is an effective focal length of the optical imaging lens and EPD is an entrance pupil diameter of the optical imaging lens. The ratio of the effective focal length of the optical imaging lens to the entrance pupil diameter of the optical imaging lens is the F number of the optical imaging lens, and the characteristic of large aperture of the lens can be realized by controlling the F number of the optical imaging lens in the range.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 2.0< | f2/f1| <3.0, where f2 is an effective focal length of the second lens and f1 is an effective focal length of the first lens. By controlling the absolute value of the ratio of the effective focal length of the second lens to the effective focal length of the first lens to be within this range, off-axis aberrations of the system can be advantageously balanced. More specifically, f2 and f1 can satisfy 2.1 ≦ f2/f1| ≦ 2.7.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0< | R13+ R14|/f7<1.9, where R13 is a radius of curvature of an object-side surface of the seventh lens, R14 is a radius of curvature of an image-side surface of the seventh lens, and f7 is an effective focal length of the seventh lens. By controlling the ratio of the absolute value of the sum of the curvature radius of the object side surface of the seventh lens and the curvature radius of the image side surface of the seventh lens to the effective focal length of the seventh lens within the range, the bending shape of the seventh lens can be adjusted, and the macro performance is improved. More specifically, R13, R14, and f7 can satisfy 1.2 ≦ R13+ R14|/f7 ≦ 1.8.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 3.0< T78/T45<4.3, where T78 is a separation distance of the seventh lens and the eighth lens on the optical axis, and T45 is a separation distance of the fourth lens and the fifth lens on the optical axis. By controlling the ratio of the distance between the seventh lens and the eighth lens on the optical axis to the distance between the fourth lens and the fifth lens on the optical axis within the range, the field curvature change of the image plane can be controlled favorably. More specifically, T78 and T45 can satisfy 3.1. ltoreq. T78/T45. ltoreq.4.2.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.9< | f8/f7| <1.5, where f8 is an effective focal length of the eighth lens and f7 is an effective focal length of the seventh lens. By controlling the absolute value of the ratio of the effective focal length of the eighth lens to the effective focal length of the seventh lens to be within this range, the contribution amounts of the field curvature of the seventh lens and the eighth lens can be controlled reasonably and balanced in a reasonable state. More specifically, f8 and f7 can satisfy 1.0. ltoreq. f8/f 7. ltoreq.1.4.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 2.0< R3/(R3-R4) <2.8, where R3 is a radius of curvature of an object-side surface of the second lens and R4 is a radius of curvature of an image-side surface of the second lens. By controlling the curvature radius of the object side surface of the second lens and the curvature radius of the image side surface of the second lens to meet 2.0< R3/(R3-R4) <2.8, the total deflection angle of the object side surface and the image side surface of the second lens at the marginal field of view can be reasonably controlled within a reasonable range, and the sensitivity of the system can be effectively reduced. More specifically, R3 and R4 may satisfy 2.1. ltoreq. R3/(R3-R4). ltoreq.2.7.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 2.2< (| f6| + | f7| + | f8|)/f <3.4, where f6 is an effective focal length of the sixth lens, f7 is an effective focal length of the seventh lens, f8 is an effective focal length of the eighth lens, and f is an effective focal length of the optical imaging lens. By controlling the effective focal length of the sixth lens, the seventh lens, the eighth lens and the optical imaging lens to satisfy 2.2< (| f6| + | f7| + | f8|)/f <3.4, the system can have good imaging quality and the sensitivity of the system can be effectively reduced. More specifically, f6, f7, f8 and f can satisfy 2.5 ≦ (| f6| + | f7| + | f8|)/f ≦ 3.3.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-2.5 < f23/f < -1.5, where f23 is a combined focal length of the second lens and the third lens, and f is an effective focal length of the optical imaging lens. By controlling the ratio of the combined focal length of the second lens and the third lens to the effective focal length of the optical imaging lens within the range, the tendency of light entering the first three lenses can be more gradual, and the size of the front part of the lens can be favorably reduced. More specifically, f23 and f can satisfy-2.4. ltoreq. f 23/f. ltoreq. 1.6.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.8< | f4/f1| <3.5, where f4 is an effective focal length of the fourth lens and f1 is an effective focal length of the first lens. By controlling the absolute value of the ratio of the effective focal length of the fourth lens to the effective focal length of the first lens to be within the range, the spherical aberration contribution of the fourth lens and the first lens can be effectively controlled within a reasonable level, so that the on-axis field of view obtains good imaging quality. More specifically, f4 and f1 can satisfy 1.85 ≦ f4/f1| ≦ 3.4.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 3.0< ImgH/SD11<3.8, where ImgH is a half of a diagonal length of an effective pixel area on an imaging plane of the optical lens, and SD11 is a maximum effective radius of an object side surface of the first lens. By controlling the ratio of half of the diagonal length of the effective pixel area on the imaging surface of the optical lens to the maximum effective radius of the object side surface of the first lens within the range, the whole structure of the lens can be favorably ensured to be small, and the requirement of miniaturization can be favorably met. More specifically, ImgH and SD11 may satisfy 3.2 ≦ ImgH/SD11 ≦ 3.7.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.6< | f678/f | <3.8, where f678 is a combined focal length of the sixth lens, the seventh lens, and the eighth lens, and f is an effective focal length of the optical imaging lens. By controlling the absolute value of the ratio of the combined focal length of the sixth lens element, the seventh lens element and the eighth lens element to the effective focal length of the optical imaging lens assembly within the range, the sixth lens element, the seventh lens element and the eighth lens element can be combined to form a lens assembly with reasonable negative refractive power to balance the aberration generated by the lens assembly with positive refractive power at the front end, thereby obtaining good imaging quality and achieving the effect of high resolving power. More specifically, f678 and f can satisfy 1.8 ≦ f678/f ≦ 3.7.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0< T23/T45<1.8, where T23 is a separation distance of the second lens and the third lens on the optical axis, and T45 is a separation distance of the fourth lens and the fifth lens on the optical axis. By controlling the ratio of the distance between the second lens and the third lens on the optical axis to the distance between the fourth lens and the fifth lens on the optical axis within this range, the amount of contribution of curvature of field of each field of view can be controlled within a reasonable range. More specifically, T23 and T45 can satisfy 1.05 ≦ T23/T45 ≦ 1.7.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0< f6/f8<1.8, where f6 is an effective focal length of the sixth lens and f8 is an effective focal length of the eighth lens. By controlling the ratio of the effective focal length of the sixth lens to the effective focal length of the eighth lens within the range, the deflection angle of light can be reduced, and the imaging quality of the optical system is improved. More specifically, f6 and f8 can satisfy 1.1. ltoreq. f6/f 8. ltoreq.1.7.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0< (CT5+ CT6)/T56<2.3, where CT5 is a central thickness of the fifth lens on the optical axis, CT6 is a central thickness of the sixth lens on the optical axis, and T56 is a separation distance of the fifth lens and the sixth lens on the optical axis. By controlling the ratio of 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 the distance between the fifth lens and the sixth lens on the optical axis within the range, the field curvature and the distortion of the system can be effectively ensured, so that the off-axis field has good imaging quality. More specifically, CT5, CT6 and T56 may satisfy 1.2 ≦ (CT5+ CT6)/T56 ≦ 2.1.
In an exemplary embodiment, the effective focal length f of the optical imaging lens may be, for example, in the range of 6.8mm to 7.5mm, the effective focal length f1 of the first lens may be, for example, in the range of 6.6mm to 7.5mm, the effective focal length f2 of the second lens may be, for example, in the range of-19.2 mm to-14.3 mm, the effective focal length f3 of the third lens may be, for example, in the range of-222.7 mm to-35.4 mm, the effective focal length f4 of the fourth lens may be, for example, in the range of 13.9mm to 22.1mm, the effective focal length f5 of the fifth lens may be, for example, in the range of-331.2 mm to 799.1mm, the effective focal length f6 of the sixth lens may be, for example, in the range of-9.4 mm to-8.4 mm, the effective focal length f7 of the seventh lens may be, for example, in the range of-5.4 mm to 6.0mm, and the effective focal length f7 of the eighth lens may be, for example, in the range of-6.7.2 mm to-6.3 mm. The Semi-FOV of the maximum field angle of the optical imaging lens may be, for example, in the range of 42.6 ° to 43.7 °.
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, eight lenses as described above. By reasonably distributing the refractive power, the surface shape and the material of each lens, the central thickness of each lens, the on-axis distance between the lenses and the like, the optical imaging lens with the characteristics of large image surface, large aperture, ultra-thin and the like can be provided, and the high requirements of the market can be better met.
In the embodiment of the present application, the mirror surfaces of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, and the eighth 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 eighth 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, the sixth lens, the seventh lens, and the eighth lens is an aspherical mirror surface. Optionally, each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, and the eighth lens has an object-side surface and an image-side surface which are aspheric mirror surfaces.
However, it will be appreciated by those skilled in the art that the number of lenses constituting an optical imaging lens may be varied to achieve the various results and advantages described in the present specification without departing from the claimed subject matter. For example, although eight lenses are exemplified in the embodiment, the optical imaging lens is not limited to include eight 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, a seventh lens E7, an eighth lens E8, and a filter E9.
The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with negative refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with negative refractive power has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 with positive refractive power has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 with negative refractive power has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 with negative refractive power has a concave object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 with positive refractive power has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 with negative refractive power has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The optical imaging lens has an imaging surface S19, and light from the object passes through the respective surfaces S1 to S18 in order and is finally imaged on the imaging surface S19.
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 BDA0003412015860000071
Figure BDA0003412015860000081
TABLE 1
In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 through the eighth lens E8 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 BDA0003412015860000082
whereinX is the distance rise from 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 S16 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 7.1985E-03 2.1951E-04 6.8686E-04 -2.6847E-03 4.5864E-03 -4.6874E-03 3.1771E-03
S2 -2.6638E-02 6.3106E-02 -1.0298E-01 1.2843E-01 -1.2265E-01 8.9430E-02 -4.9633E-02
S3 -3.7750E-02 6.6435E-02 -1.0455E-01 1.3447E-01 -1.3533E-01 1.0492E-01 -6.2097E-02
S4 -1.2820E-02 1.0981E-02 -3.2416E-03 -1.4016E-02 3.7643E-02 -5.1948E-02 4.6906E-02
S5 -1.7698E-02 -4.6019E-04 6.1168E-03 -2.0524E-02 3.8893E-02 -4.8297E-02 4.1362E-02
S6 -1.9649E-02 -5.2309E-04 5.9018E-03 -1.5655E-02 2.4816E-02 -2.6309E-02 1.9554E-02
S7 -8.4065E-03 -1.1682E-03 2.9770E-03 -5.1457E-03 5.5129E-03 -4.0185E-03 2.0667E-03
S8 -1.0507E-02 -2.2272E-03 -1.9535E-04 3.3694E-03 -4.9309E-03 4.1951E-03 -2.4513E-03
S9 9.9482E-04 -2.5581E-02 1.0524E-02 2.1010E-03 -6.8074E-03 6.1204E-03 -3.5271E-03
S10 2.8674E-02 -3.5649E-02 1.5553E-02 -1.8410E-03 -2.9035E-03 2.7326E-03 -1.3752E-03
S11 7.5497E-02 -6.3300E-02 4.7573E-02 -3.0093E-02 1.4803E-02 -5.5293E-03 1.5522E-03
S12 -1.9064E-02 -1.3567E-02 2.0186E-02 -1.3780E-02 6.2302E-03 -2.0096E-03 4.7256E-04
S13 -4.7459E-02 1.8198E-02 -6.8233E-03 1.8321E-03 -3.3644E-04 3.7615E-05 -1.2435E-06
S14 2.1039E-02 -7.7233E-03 9.1737E-04 9.5171E-05 -6.5132E-05 1.4665E-05 -2.0602E-06
S15 -3.7493E-02 7.0631E-03 -8.9848E-04 5.7810E-05 3.8167E-06 -1.3294E-06 1.5378E-07
S16 -4.2947E-02 9.2391E-03 -1.6642E-03 2.3314E-04 -2.4830E-05 1.9844E-06 -1.1835E-07
TABLE 2-1
Figure BDA0003412015860000083
Figure BDA0003412015860000091
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 chromatic aberration of magnification curve of the optical imaging lens of embodiment 1, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 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, a seventh lens E7, an eighth lens E8, and a filter E9.
The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with negative refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with negative refractive power has a concave object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 with positive refractive power has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 with positive refractive power has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 with negative refractive power has a concave object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 with positive refractive power has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 with negative refractive power has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The optical imaging lens has an imaging surface S19, and light from the object passes through the respective surfaces S1 to S18 in order and is finally imaged on the imaging surface S19.
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 S16 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 BDA0003412015860000092
Figure BDA0003412015860000101
TABLE 3
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 7.1956E-03 -9.0221E-04 3.4658E-03 -6.3870E-03 7.5831E-03 -6.2005E-03 3.6295E-03
S2 -2.6661E-02 5.3367E-02 -8.3136E-02 1.1452E-01 -1.2900E-01 1.1127E-01 -7.1429E-02
S3 -3.5249E-02 4.9544E-02 -6.6325E-02 8.8643E-02 -1.0629E-01 1.0152E-01 -7.2646E-02
S4 -1.1409E-02 8.3751E-03 -5.0661E-03 3.9659E-03 -3.6935E-03 2.4114E-03 -1.8759E-04
S5 -1.4910E-02 -9.7589E-03 2.7336E-02 -5.2061E-02 6.7900E-02 -6.2609E-02 4.1506E-02
S6 -1.4741E-02 -1.0579E-02 1.8476E-02 -2.2519E-02 2.0302E-02 -1.4677E-02 9.0018E-03
S7 -4.5394E-03 -1.5142E-02 3.0748E-02 -4.5812E-02 5.0127E-02 -4.0996E-02 2.5130E-02
S8 -9.1065E-03 -8.5378E-03 1.5060E-02 -2.2749E-02 2.6098E-02 -2.1596E-02 1.2767E-02
S9 -1.2340E-03 -1.8746E-02 9.2690E-04 1.1542E-02 -1.4069E-02 1.0388E-02 -5.3890E-03
S10 2.4778E-02 -2.7480E-02 7.4929E-03 3.5854E-03 -5.7392E-03 3.9198E-03 -1.7713E-03
S11 7.8807E-02 -6.8914E-02 5.6350E-02 -3.8890E-02 2.0699E-02 -8.2855E-03 2.4720E-03
S12 -2.3243E-02 -1.0325E-02 2.0383E-02 -1.5622E-02 7.7284E-03 -2.6907E-03 6.7606E-04
S13 -5.3347E-02 2.5136E-02 -1.1333E-02 3.8306E-03 -9.7124E-04 1.8455E-04 -2.6164E-05
S14 2.4779E-02 -1.0014E-02 1.9642E-03 -2.6281E-04 2.2006E-05 -3.9522E-07 -1.8601E-07
S15 -2.7496E-02 1.6031E-03 8.4457E-04 -3.1194E-04 5.6883E-05 -6.5569E-06 5.1319E-07
S16 -3.4508E-02 5.3881E-03 -6.5947E-04 6.4260E-05 -5.4577E-06 4.1576E-07 -2.6941E-08
TABLE 4-1
Figure BDA0003412015860000102
Figure BDA0003412015860000111
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 chromatic aberration of magnification curve of the optical imaging lens of embodiment 2, which represents a deviation of different image heights on the imaging plane after light passes through the lens. 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, a seventh lens E7, an eighth lens E8, and a filter E9.
The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with negative refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with negative refractive power has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 with positive refractive power has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 with negative refractive power has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 with negative refractive power has a concave object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 with positive refractive power has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 with negative refractive power has a concave object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The optical imaging lens has an imaging surface S19, and light from the object passes through the respective surfaces S1 to S18 in order and is finally imaged on the imaging surface S19.
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 S16 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 BDA0003412015860000112
Figure BDA0003412015860000121
TABLE 5
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 7.9026E-03 -6.7146E-04 3.5932E-03 -7.4079E-03 9.2456E-03 -7.5837E-03 4.2780E-03
S2 -1.4194E-02 1.7693E-02 -1.0022E-02 -1.8074E-03 1.0368E-02 -1.1734E-02 8.0815E-03
S3 -2.7115E-02 2.1636E-02 -2.3449E-03 -2.2706E-02 3.9450E-02 -3.8675E-02 2.5755E-02
S4 -1.3399E-02 7.5309E-03 1.3097E-02 -4.9294E-02 9.0923E-02 -1.1150E-01 9.6422E-02
S5 -1.4960E-02 -9.8942E-03 2.8255E-02 -5.2258E-02 6.5369E-02 -5.6847E-02 3.4535E-02
S6 -1.3748E-02 -1.7885E-02 4.4507E-02 -7.4779E-02 9.0932E-02 -8.1629E-02 5.4387E-02
S7 -3.5809E-03 -1.6209E-02 3.5975E-02 -5.5613E-02 6.2269E-02 -5.1345E-02 3.1278E-02
S8 -8.2400E-03 -1.6387E-03 -8.5528E-03 2.2534E-02 -3.0885E-02 2.7939E-02 -1.7823E-02
S9 5.9626E-03 -3.1547E-02 1.7941E-02 -7.0039E-03 1.3141E-03 9.8053E-04 -1.1078E-03
S10 3.1683E-02 -4.3531E-02 3.0271E-02 -2.1256E-02 1.4180E-02 -7.6754E-03 3.1623E-03
S11 7.4370E-02 -7.0142E-02 6.4883E-02 -4.9171E-02 2.7964E-02 -1.1798E-02 3.6905E-03
S12 -2.3027E-02 -1.2255E-02 2.3772E-02 -1.8074E-02 8.8448E-03 -3.0589E-03 7.6752E-04
S13 -4.8071E-02 1.9961E-02 -8.5358E-03 2.8027E-03 -6.9869E-04 1.3152E-04 -1.8661E-05
S14 2.3390E-02 -1.0440E-02 2.1436E-03 -2.7103E-04 1.5077E-05 1.2882E-06 -3.5908E-07
S15 -4.4141E-02 1.1356E-02 -2.2361E-03 2.8334E-04 -1.7301E-05 -4.3564E-07 1.7932E-07
S16 -5.0125E-02 1.3851E-02 -3.1121E-03 5.2163E-04 -6.5132E-05 6.0527E-06 -4.1777E-07
TABLE 6-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 -1.6956E-03 4.7422E-04 -9.2463E-05 1.2164E-05 -1.0105E-06 4.6254E-08 -8.2155E-10
S2 -3.8398E-03 1.2993E-03 -3.1305E-04 5.2515E-05 -5.8275E-06 3.8420E-07 -1.1382E-08
S3 -1.2247E-02 4.2203E-03 -1.0491E-03 1.8379E-04 -2.1561E-05 1.5215E-06 -4.8839E-08
S4 -5.9882E-02 2.6772E-02 -8.5284E-03 1.8857E-03 -2.7467E-04 2.3679E-05 -9.1443E-07
S5 -1.4466E-02 3.9955E-03 -6.3291E-04 2.1855E-05 1.1576E-05 -2.1180E-06 1.2062E-07
S6 -2.6854E-02 9.7533E-03 -2.5618E-03 4.7140E-04 -5.7380E-05 4.1306E-06 -1.3251E-07
S7 -1.4061E-02 4.6363E-03 -1.1045E-03 1.8453E-04 -2.0463E-05 1.3498E-06 -4.0014E-08
S8 8.2003E-03 -2.7324E-03 6.5291E-04 -1.0897E-04 1.2048E-05 -7.9188E-07 2.3385E-08
S9 5.5588E-04 -1.7248E-04 3.5300E-05 -4.7942E-06 4.1902E-07 -2.1608E-08 5.0827E-10
S10 -9.7267E-04 2.2074E-04 -3.6323E-05 4.2014E-06 -3.2301E-07 1.4779E-08 -3.0378E-10
S11 -8.5421E-04 1.4524E-04 -1.7848E-05 1.5378E-06 -8.7894E-08 2.9861E-09 -4.5556E-11
S12 -1.4067E-04 1.8759E-05 -1.7945E-06 1.1965E-07 -5.2705E-09 1.3768E-10 -1.6140E-12
S13 1.9846E-06 -1.5637E-07 8.9576E-09 -3.6217E-10 9.8163E-12 -1.6086E-13 1.2131E-15
S14 3.7064E-08 -2.2180E-09 7.7516E-11 -1.2112E-12 -1.1931E-14 7.6976E-16 -8.7797E-18
S15 -1.6779E-08 9.1150E-10 -3.2351E-11 7.6407E-13 -1.1635E-14 1.0376E-16 -4.1269E-19
S16 2.1362E-08 -8.0438E-10 2.1996E-11 -4.2481E-13 5.4945E-15 -4.2715E-17 1.5092E-19
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 chromatic aberration of magnification curve of the optical imaging lens of embodiment 3, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 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, a seventh lens E7, an eighth lens E8, and a filter E9.
The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with negative refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with negative refractive power has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 with positive refractive power has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 with positive refractive power has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 with negative refractive power has a concave object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 with positive refractive power has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 with negative refractive power has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The optical imaging lens has an imaging surface S19, and light from the object passes through the respective surfaces S1 to S18 in order and is finally imaged on the imaging surface S19.
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 S16 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 BDA0003412015860000131
TABLE 7
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 7.1074E-03 5.8046E-04 -4.2270E-04 -4.9625E-04 1.6553E-03 -1.9640E-03 1.3898E-03
S2 -2.5931E-02 6.0744E-02 -9.7846E-02 1.1982E-01 -1.1192E-01 7.9717E-02 -4.3261E-02
S3 -3.7245E-02 6.4958E-02 -1.0225E-01 1.3188E-01 -1.3317E-01 1.0372E-01 -6.1740E-02
S4 -1.2709E-02 1.0167E-02 8.8232E-05 -2.2561E-02 5.2017E-02 -6.8413E-02 6.0147E-02
S5 -1.7757E-02 -6.2208E-04 6.9470E-03 -2.2671E-02 4.2008E-02 -5.1122E-02 4.3049E-02
S6 -1.9601E-02 -1.0386E-03 7.9576E-03 -1.9612E-02 2.9273E-02 -2.9450E-02 2.0909E-02
S7 -8.4542E-03 -1.4488E-03 4.1563E-03 -6.8110E-03 6.7351E-03 -4.4010E-03 1.9363E-03
S8 -1.0727E-02 -3.2053E-03 3.4316E-03 -3.2099E-03 2.7911E-03 -2.0582E-03 1.1488E-03
S9 -3.9051E-04 -1.9787E-02 -2.0679E-03 1.9677E-02 -2.3604E-02 1.7402E-02 -8.9454E-03
S10 2.7826E-02 -3.1931E-02 8.6205E-03 6.2454E-03 -9.3684E-03 6.3935E-03 -2.8691E-03
S11 7.5706E-02 -6.3645E-02 4.7674E-02 -2.9891E-02 1.4547E-02 -5.3737E-03 1.4916E-03
S12 -1.8749E-02 -1.3928E-02 2.0509E-02 -1.4004E-02 6.3456E-03 -2.0531E-03 4.8458E-04
S13 -4.7471E-02 1.8142E-02 -6.7303E-03 1.7895E-03 -3.2420E-04 3.4937E-05 -7.8079E-07
S14 2.0623E-02 -7.6084E-03 9.6783E-04 6.2322E-05 -5.6158E-05 1.3092E-05 -1.8638E-06
S15 -3.8008E-02 7.2506E-03 -9.5781E-04 7.3496E-05 9.8180E-07 -9.8374E-07 1.2463E-07
S16 -4.2866E-02 9.1315E-03 -1.6172E-03 2.2126E-04 -2.2889E-05 1.7681E-06 -1.0142E-07
TABLE 8-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 -6.5481E-04 2.1338E-04 -4.8439E-05 7.5332E-06 -7.6598E-07 4.5893E-08 -1.2289E-09
S2 1.7809E-02 -5.5036E-03 1.2522E-03 -2.0291E-04 2.2098E-05 -1.4464E-06 4.2905E-08
S3 2.7843E-02 -9.3911E-03 2.3211E-03 -4.0649E-04 4.7617E-05 -3.3378E-06 1.0565E-07
S4 -3.7074E-02 1.6271E-02 -5.0658E-03 1.0940E-03 -1.5586E-04 1.3172E-05 -4.9998E-07
S5 -2.5655E-02 1.0900E-02 -3.2800E-03 6.8254E-04 -9.3351E-05 7.5422E-06 -2.7245E-07
S6 -1.0660E-02 3.9215E-03 -1.0329E-03 1.9019E-04 -2.3260E-05 1.6974E-06 -5.5886E-08
S7 -5.5350E-04 8.9014E-05 -2.1039E-06 -2.2977E-06 4.9578E-07 -4.6088E-08 1.7265E-09
S8 -4.6230E-04 1.3082E-04 -2.5318E-05 3.1872E-06 -2.3482E-07 7.6483E-09 2.4774E-12
S9 3.3101E-03 -8.8741E-04 1.7076E-04 -2.2962E-05 2.0455E-06 -1.0829E-07 2.5756E-09
S10 9.0809E-04 -2.0635E-04 3.3500E-05 -3.7914E-06 2.8386E-07 -1.2614E-08 2.5142E-10
S11 -3.0878E-04 4.7153E-05 -5.2141E-06 4.0445E-07 -2.0800E-08 6.3474E-10 -8.6731E-12
S12 -8.3906E-05 1.0616E-05 -9.6793E-07 6.1847E-08 -2.6281E-09 6.6766E-11 -7.6854E-13
S13 -4.1518E-07 7.6811E-08 -7.2506E-09 4.2268E-10 -1.5313E-11 3.1702E-13 -2.8708E-15
S14 1.8222E-07 -1.2634E-08 6.2207E-10 -2.1294E-11 4.8202E-13 -6.4875E-15 3.9299E-17
S15 -9.0048E-09 4.2843E-10 -1.3911E-11 3.0660E-13 -4.4021E-15 3.7224E-17 -1.4087E-19
S16 4.3086E-09 -1.3489E-10 3.0717E-12 -4.9529E-14 5.3658E-16 -3.5084E-18 1.0475E-20
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 chromatic aberration of magnification curve of the optical imaging lens of embodiment 4, which represents a deviation of different image heights on the imaging plane after light passes through the lens. 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, a seventh lens E7, an eighth lens E8, and a filter E9.
The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with negative refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with negative refractive power has a concave object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 with positive refractive power has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 with negative refractive power has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 with negative refractive power has a concave object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 with positive refractive power has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 with negative refractive power has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The optical imaging lens has an imaging surface S19, and light from the object passes through the respective surfaces S1 to S18 in order and is finally imaged on the imaging surface S19.
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 S16 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 BDA0003412015860000151
TABLE 9
Figure BDA0003412015860000152
Figure BDA0003412015860000161
TABLE 10-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 2.4096E-04 -8.1092E-05 1.9339E-05 -3.1476E-06 3.3046E-07 -2.0066E-08 5.3236E-10
S2 2.9236E-02 -9.8221E-03 2.4054E-03 -4.1591E-04 4.7999E-05 -3.3117E-06 1.0317E-07
S3 4.9880E-02 -1.7844E-02 4.6194E-03 -8.3971E-04 1.0147E-04 -7.3079E-06 2.3711E-07
S4 -4.2893E-02 1.9029E-02 -6.0054E-03 1.3162E-03 -1.9038E-04 1.6337E-05 -6.2979E-07
S5 1.4104E-02 -6.5747E-03 2.1467E-03 -4.8080E-04 7.0359E-05 -6.0587E-06 2.3282E-07
S6 -1.1444E-03 4.4941E-04 -1.3670E-04 3.0313E-05 -4.5415E-06 4.0555E-07 -1.6128E-08
S7 -1.3065E-03 4.5873E-04 -1.1564E-04 2.0340E-05 -2.3737E-06 1.6495E-07 -5.1372E-09
S8 -2.0066E-04 -2.4252E-05 2.4143E-05 -6.6070E-06 9.7121E-07 -7.7362E-08 2.6332E-09
S9 4.2563E-03 -1.2323E-03 2.5542E-04 -3.6956E-05 3.5428E-06 -2.0204E-07 5.1832E-09
S10 1.2603E-03 -3.0338E-04 5.2006E-05 -6.1986E-06 4.8788E-07 -2.2772E-08 4.7666E-10
S11 -3.8110E-04 5.9019E-05 -6.5982E-06 5.1530E-07 -2.6539E-08 8.0584E-10 -1.0869E-11
S12 -1.1065E-04 1.4032E-05 -1.2677E-06 7.9184E-08 -3.2371E-09 7.7659E-11 -8.2628E-13
S13 1.7473E-06 -1.2466E-07 6.2868E-09 -2.1405E-10 4.5326E-12 -5.0424E-14 1.8270E-16
S14 6.2661E-08 -4.8334E-09 2.5620E-10 -9.2526E-12 2.1792E-13 -3.0227E-15 1.8766E-17
S15 -2.5675E-08 9.8699E-10 -2.6839E-11 5.0550E-13 -6.2803E-15 4.6334E-17 -1.5384E-19
S16 1.4688E-09 -5.9778E-11 1.7332E-12 -3.4693E-14 4.5467E-16 -3.5065E-18 1.2057E-20
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 chromatic aberration of magnification curve of the optical imaging lens of embodiment 5, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 10A to 10C, the optical imaging lens according to embodiment 5 can achieve good imaging quality.
Example 6
An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12C. Fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, 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, a seventh lens E7, an eighth lens E8, and a filter E9.
The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with negative refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with negative refractive power has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 with positive refractive power has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 with negative refractive power has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 with negative refractive power has a concave object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 with positive refractive power has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 with negative refractive power has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The optical imaging lens has an imaging surface S19, and light from the object passes through the respective surfaces S1 to S18 in order and is finally imaged on the imaging surface S19.
Table 11 shows basic parameters of the optical imaging lens of embodiment 6, in which the radius of curvature and the unit of thickness/distanceAll in millimeters (mm). Tables 12-1 and 12-2 show the high-order term coefficients A that can be used for the aspherical mirror surfaces S1 to S16 in example 64、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 BDA0003412015860000171
TABLE 11
Figure BDA0003412015860000172
Figure BDA0003412015860000181
TABLE 12-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 4.7929E-03 -1.4881E-03 3.2856E-04 -5.0248E-05 5.0509E-06 -2.9967E-07 7.9394E-09
S2 2.1552E-02 -7.6294E-03 1.9666E-03 -3.5666E-04 4.2995E-05 -3.0863E-06 9.9680E-08
S3 2.2553E-02 -8.6763E-03 2.4178E-03 -4.7108E-04 6.0636E-05 -4.6221E-06 1.5777E-07
S4 -1.1775E-01 5.1888E-02 -1.6338E-02 3.5822E-03 -5.1918E-04 4.4678E-05 -1.7275E-06
S5 6.3981E-03 -2.4233E-03 6.5096E-04 -1.2223E-04 1.5467E-05 -1.2059E-06 4.4476E-08
S6 -2.0791E-02 8.1147E-03 -2.2885E-03 4.5257E-04 -5.9370E-05 4.6281E-06 -1.6189E-07
S7 3.7752E-03 -1.2938E-03 3.1262E-04 -5.2306E-05 5.7913E-06 -3.8344E-07 1.1548E-08
S8 2.2615E-03 -7.8821E-04 1.9444E-04 -3.3126E-05 3.7029E-06 -2.4410E-07 7.1834E-09
S9 6.3973E-04 -8.3605E-05 5.3694E-07 1.7991E-06 -3.0393E-07 2.2345E-08 -6.4668E-10
S10 3.3093E-04 -6.4929E-05 9.1174E-06 -8.9360E-07 5.8027E-08 -2.2386E-09 3.8627E-11
S11 -2.7367E-04 4.2608E-05 -4.7734E-06 3.7236E-07 -1.9092E-08 5.7524E-10 -7.6732E-12
S12 -7.3866E-05 9.4601E-06 -8.6825E-07 5.5473E-08 -2.3379E-09 5.8345E-11 -6.5260E-13
S13 1.1825E-06 -8.4989E-08 4.2793E-09 -1.4328E-10 2.8986E-12 -2.8487E-14 5.5108E-17
S14 -8.6352E-08 4.9237E-09 -1.9750E-10 5.3732E-12 -9.2290E-14 8.6097E-16 -2.9165E-18
S15 -3.9231E-08 1.6355E-09 -4.8954E-11 1.0284E-12 -1.4416E-14 1.2122E-16 -4.6280E-19
S16 -2.0455E-09 6.9699E-11 -1.6898E-12 2.8546E-14 -3.1960E-16 2.1320E-18 -6.4146E-21
TABLE 12-2
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 6. Fig. 12C shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 6, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 12A to 12C, the optical imaging lens according to embodiment 6 can achieve good imaging quality.
Example 7
An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14C. Fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, 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, a seventh lens E7, an eighth lens E8, and a filter E9.
The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with negative refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with negative refractive power has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 with positive refractive power has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 with negative refractive power has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 with negative refractive power has a concave object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 with positive refractive power has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 with negative refractive power has a concave object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The optical imaging lens has an imaging surface S19, and light from the object passes through the respective surfaces S1 to S18 in order and is finally imaged on the imaging surface S19.
Table 13 shows basic parameters of the optical imaging lens of embodiment 7, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 14-1 and 14-2 show the high-order term coefficients A that can be used for the aspherical mirror surfaces S1 to S16 in example 74、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 BDA0003412015860000191
Watch 13
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 7.5697E-03 1.3095E-03 -2.4343E-03 3.1631E-03 -2.4744E-03 1.1147E-03 -1.7698E-04
S2 -1.4979E-02 2.0843E-02 -1.7754E-02 1.1598E-02 -6.0308E-03 2.6158E-03 -1.0306E-03
S3 -2.7670E-02 2.2861E-02 -2.3750E-03 -3.2193E-02 6.6025E-02 -7.7164E-02 6.0879E-02
S4 -1.3051E-02 5.4634E-03 1.8259E-02 -5.9859E-02 1.0588E-01 -1.2619E-01 1.0668E-01
S5 -1.5288E-02 -1.3444E-02 4.8359E-02 -1.1540E-01 1.8945E-01 -2.1947E-01 1.8215E-01
S6 -1.2841E-02 -2.4368E-02 6.7201E-02 -1.2617E-01 1.6787E-01 -1.6046E-01 1.1140E-01
S7 -3.3157E-03 -1.4176E-02 2.6931E-02 -3.8535E-02 4.0946E-02 -3.2094E-02 1.8550E-02
S8 -7.7196E-03 -2.6600E-03 -5.0284E-03 1.1975E-02 -1.4427E-02 1.1928E-02 -7.2217E-03
S9 4.0307E-03 -2.2777E-02 5.4470E-04 1.2974E-02 -1.4828E-02 1.0875E-02 -5.8156E-03
S10 2.8539E-02 -3.3153E-02 1.3921E-02 -5.3102E-03 3.4137E-03 -2.3638E-03 1.2029E-03
S11 7.2982E-02 -6.3234E-02 5.4533E-02 -3.9641E-02 2.1932E-02 -9.0678E-03 2.7898E-03
S12 -2.2787E-02 -1.4032E-02 2.5685E-02 -1.9538E-02 9.6970E-03 -3.4171E-03 8.7455E-04
S13 -4.7357E-02 1.8951E-02 -7.7870E-03 2.4070E-03 -5.5904E-04 9.8466E-05 -1.3208E-05
S14 2.7663E-02 -1.2036E-02 2.5423E-03 -3.8087E-04 4.5838E-05 -5.2981E-06 6.3114E-07
S15 -4.3584E-02 7.8842E-03 -3.3718E-05 -4.3162E-04 1.2788E-04 -2.0342E-05 2.0950E-06
S16 -4.2474E-02 8.8058E-03 -1.3478E-03 1.4588E-04 -1.1729E-05 7.3729E-07 -3.6607E-08
TABLE 14-1
Figure BDA0003412015860000192
Figure BDA0003412015860000201
TABLE 14-2
Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 7. Fig. 14C shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 7, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 14A to 14C, the optical imaging lens according to embodiment 7 can achieve good imaging quality.
Further, in embodiments 1 to 7, the effective focal length values f1 to f8 of the respective lenses, the effective focal length f of the optical imaging lens, the distance TTL along the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens, half ImgH of the diagonal length of the effective pixel area on the imaging surface, and half Semi-FOV of the maximum angle of view of the optical imaging lens are as shown in table 15.
Parameters/embodiments 1 2 3 4 5 6 7
f1(mm) 7.46 7.35 6.67 7.43 7.33 7.08 6.68
f2(mm) -17.71 -19.14 -14.38 -17.57 -19.02 -17.16 -14.84
f3(mm) -53.63 -35.48 -222.64 -49.08 -40.58 -222.64 -222.64
f4(mm) 13.94 15.95 22.00 14.37 15.14 14.51 16.66
f5(mm) -128.76 799.03 -331.17 798.95 -93.07 -37.57 -69.34
f6(mm) -8.75 -8.48 -9.05 -8.41 -8.84 -9.37 -9.00
f7(mm) 5.85 5.70 5.84 5.87 5.67 5.95 5.49
f8(mm) -6.97 -7.32 -6.32 -7.03 -7.59 -7.11 -6.24
f(mm) 7.41 7.42 7.42 7.42 7.28 7.16 6.83
TTL(mm) 9.51 9.53 9.11 9.51 9.51 9.51 8.81
ImgH(mm) 7.40 7.38 7.15 7.40 7.40 7.40 6.58
Semi-FOV(°) 43.66 43.61 42.64 43.68 43.67 43.63 42.65
Watch 15
The conditional expressions in examples 1 to 7 satisfy the conditions shown in table 16, respectively.
Figure BDA0003412015860000202
Figure BDA0003412015860000211
TABLE 16
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 (30)

1. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:
a first lens element with positive refractive power;
a second lens element with negative refractive power;
a third lens element with negative refractive power;
a fourth lens element with positive refractive power;
a fifth lens;
a sixth lens;
a seventh lens; and
a fourth lens element for forming a third lens element,
the optical imaging lens satisfies:
TTL/ImgH <1.35, wherein, TTL is the distance between the object side surface of the first lens and the imaging surface of the optical imaging lens along the optical axis, and ImgH is half of the length of the diagonal of the effective pixel area on the imaging surface; and
there is a space between adjacent lenses on the optical axis.
2. The optical imaging lens of claim 1, wherein the effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy:
f/EPD<1.8。
3. the optical imaging lens of claim 1, wherein the effective focal length f2 of the second lens and the effective focal length f1 of the first lens satisfy:
2.0<|f2/f1|<3.0。
4. the optical imaging lens of claim 1, wherein the radius of curvature R13 of the object-side surface of the seventh lens, the radius of curvature R14 of the image-side surface of the seventh lens, and the effective focal length f7 of the seventh lens satisfy:
1.0<|R13+R14|/f7<1.9。
5. the optical imaging lens according to claim 1, wherein a separation distance T78 on the optical axis between the seventh lens and the eighth lens and a separation distance T45 on the optical axis between the fourth lens and the fifth lens satisfy:
3.0<T78/T45<4.3。
6. the optical imaging lens of claim 1, wherein the effective focal length f8 of the eighth lens and the effective focal length f7 of the seventh lens satisfy:
0.9<|f8/f7|<1.5。
7. the optical imaging lens of claim 1, wherein the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens satisfy:
2.0<R3/(R3-R4)<2.8。
8. the optical imaging lens of claim 1, wherein the effective focal length f6 of the sixth lens, the effective focal length f7 of the seventh lens, the effective focal length f8 of the eighth lens, and the effective focal length f of the optical imaging lens satisfy:
2.2<(|f6|+|f7|+|f8|)/f<3.4。
9. the optical imaging lens according to any one of claims 1 to 8, wherein a combined focal length f23 of the second lens and the third lens and an effective focal length f of the optical imaging lens satisfy:
-2.5<f23/f<-1.5。
10. the optical imaging lens according to any one of claims 1 to 8, characterized in that the effective focal length f4 of the fourth lens and the effective focal length f1 of the first lens satisfy:
1.8<|f4/f1|<3.5。
11. the optical imaging lens according to any one of claims 1 to 8, wherein the half ImgH of the diagonal length of the effective pixel area on the imaging plane and the maximum effective radius SD11 of the object side surface of the first lens satisfy:
3.0<ImgH/SD11<3.8。
12. the optical imaging lens according to any one of claims 1 to 8, wherein a combined focal length f678 of the sixth lens, the seventh lens and the eighth lens and an effective focal length f of the optical imaging lens satisfy:
1.6<|f678/f|<3.8。
13. the optical imaging lens according to any one of claims 1 to 8, wherein a separation distance T23 of the second lens and the third lens on the optical axis and a separation distance T45 of the fourth lens and the fifth lens on the optical axis satisfy:
1.0<T23/T45<1.8。
14. the optical imaging lens according to any one of claims 1 to 8, characterized in that the effective focal length f6 of the sixth lens and the effective focal length f8 of the eighth lens satisfy:
1.0<f6/f8<1.8。
15. the optical imaging lens according to any one of claims 1 to 8, wherein 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 and a separation distance T56 of the fifth lens and the sixth lens on the optical axis satisfy:
1.0<(CT5+CT6)/T56<2.3。
16. the optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:
a first lens element with positive refractive power;
a second lens element with negative refractive power;
a third lens element with negative refractive power;
a fourth lens;
a fifth lens element having a concave object-side surface and a convex image-side surface;
a sixth lens;
a seventh lens; and
a fourth lens element for forming a third lens element,
the optical imaging lens satisfies:
ImgH is greater than 6.0mm, wherein ImgH is half of the diagonal length of an effective pixel area on an imaging surface of the optical imaging lens; and
there is a space between adjacent lenses on the optical axis.
17. The optical imaging lens of claim 16, wherein the effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy:
f/EPD<1.8。
18. the optical imaging lens of claim 16, wherein the effective focal length f2 of the second lens and the effective focal length f1 of the first lens satisfy:
2.0<|f2/f1|<3.0。
19. the optical imaging lens of claim 16, wherein the radius of curvature R13 of the object-side surface of the seventh lens, the radius of curvature R14 of the image-side surface of the seventh lens, and the effective focal length f7 of the seventh lens satisfy:
1.0<|R13+R14|/f7<1.9。
20. the optical imaging lens of claim 16, wherein a separation distance T78 between the seventh lens and the eighth lens on the optical axis and a separation distance T45 between the fourth lens and the fifth lens on the optical axis satisfy:
3.0<T78/T45<4.3。
21. the optical imaging lens of claim 16, wherein the effective focal length f8 of the eighth lens and the effective focal length f7 of the seventh lens satisfy:
0.9<|f8/f7|<1.5。
22. the optical imaging lens of claim 16, wherein the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens satisfy:
2.0<R3/(R3-R4)<2.8。
23. the optical imaging lens of claim 16, wherein the effective focal length f6 of the sixth lens, the effective focal length f7 of the seventh lens, the effective focal length f8 of the eighth lens, and the effective focal length f of the optical imaging lens satisfy:
2.2<(|f6|+|f7|+|f8|)/f<3.4。
24. the optical imaging lens according to any one of claims 16 to 23, wherein a combined focal length f23 of the second lens and the third lens and an effective focal length f of the optical imaging lens satisfy:
-2.5<f23/f<-1.5。
25. the optical imaging lens according to any one of claims 16 to 23, wherein the effective focal length f4 of the fourth lens and the effective focal length f1 of the first lens satisfy:
1.8<|f4/f1|<3.5。
26. the optical imaging lens according to any one of claims 16 to 23, wherein the half ImgH of the diagonal length of the effective pixel area on the imaging plane and the maximum effective radius SD11 of the object side surface of the first lens satisfy:
3.0<ImgH/SD11<3.8。
27. the optical imaging lens according to any one of claims 16 to 23, wherein a combined focal length f678 of the sixth lens, the seventh lens and the eighth lens and an effective focal length f of the optical imaging lens satisfy:
1.6<|f678/f|<3.8。
28. the optical imaging lens according to any one of claims 16 to 23, wherein a separation distance T23 between the second lens and the third lens on the optical axis and a separation distance T45 between the fourth lens and the fifth lens on the optical axis satisfy:
1.0<T23/T45<1.8。
29. the optical imaging lens according to any one of claims 16 to 23, wherein the effective focal length f6 of the sixth lens and the effective focal length f8 of the eighth lens satisfy:
1.0<f6/f8<1.8。
30. the optical imaging lens according to any one of claims 16 to 23, wherein a central thickness CT5 of the fifth lens on the optical axis and a central thickness CT6 of the sixth lens on the optical axis and a separation distance T56 of the fifth lens and the sixth lens on the optical axis satisfy:
1.0<(CT5+CT6)/T56<2.3。
CN202123205200.5U 2021-12-15 2021-12-15 Optical imaging lens Active CN216411720U (en)

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