CN220271656U - Optical imaging lens - Google Patents
Optical imaging lens Download PDFInfo
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- CN220271656U CN220271656U CN202321611527.9U CN202321611527U CN220271656U CN 220271656 U CN220271656 U CN 220271656U CN 202321611527 U CN202321611527 U CN 202321611527U CN 220271656 U CN220271656 U CN 220271656U
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- 238000012634 optical imaging Methods 0.000 title claims abstract description 145
- 230000003287 optical effect Effects 0.000 claims abstract description 85
- 125000006850 spacer group Chemical group 0.000 claims description 218
- 239000006059 cover glass Substances 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 13
- 230000004075 alteration Effects 0.000 description 12
- 238000003384 imaging method Methods 0.000 description 11
- 201000009310 astigmatism Diseases 0.000 description 6
- 238000013461 design Methods 0.000 description 3
- 238000002372 labelling Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The application discloses optical imaging lens, it includes lens group, interval component group and lens cone, the lens group includes the first lens that arranges in proper order along the optical axis from object side to image side, the second lens, the third lens, the fourth lens, fifth lens and sixth lens, interval component group is including setting up the third interval component in the image side of third lens, the fourth interval component in the image side of fourth lens, and the fifth interval component in the image side of fifth lens sets up, lens group and interval component group are held in the lens cone, wherein, the center thickness CT4 of fourth lens on the optical axis, interval EP34 along the optical axis of third interval component and fourth interval component, the internal diameter D5s of the object side of fifth interval component, the external diameter D5s of the object side of fifth interval component and the effective focal length f5 of fifth lens satisfy: 1.2< CT4/EP34<1.7, and | (D5 s-D5 s)/f 5|is less than or equal to 0.3.
Description
Technical Field
The application relates to the field of optical devices, in particular to a six-piece optical imaging lens.
Background
Along with the rapid development of optoelectronic technology, the application field of the optical imaging lens is more and more wide, and the optical imaging lens gradually permeates from the field of traditional electronic products such as mobile phones and tablet computers to the field of security video monitoring, wearable display devices and the like. Along with the diversification of application scenes, a plurality of application fields are increasingly demanding on the requirements of structural stability and optical performance of the optical imaging lens. Aiming at different application scenes, the stability of the internal structure of the optical imaging lens is ensured, and meanwhile, the good performance of the optical imaging lens is ensured.
For the six-piece optical imaging lens, when the center thickness of the fourth lens is greater than the distance between the object side spacing element of the fourth lens and the image side spacing element of the fourth lens, the fourth lens may deform due to insufficient supporting force in the optical axis direction, which is not beneficial to the structural stability of the lens, and further affects the imaging definition of the lens, so that the requirements of the optical imaging lens in various application occasions cannot be met.
Disclosure of Invention
The present application provides an optical imaging lens that may at least solve or partially solve at least one problem or other problems occurring in the prior art.
An aspect of the present application provides an optical imaging lens, which includes a lens group, a spacing element group, and a lens barrel, the lens group includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens sequentially arranged from an object side to an image side along an optical axis, the spacing element group includes a third spacing element disposed at the image side of the third lens, a fourth spacing element disposed at the image side of the fourth lens, and a fifth spacing element disposed at the image side of the fifth lens, the lens group and the spacing element group are accommodated in the lens barrel, wherein a center thickness CT4 of the fourth lens on the optical axis, an inner diameter D5s of the third spacing element and the fourth spacing element along the optical axis, an outer diameter D5s of the object side of the fifth spacing element, and an effective focal length f5 of the fifth lens satisfy: 1.2< CT4/EP34<1.7, and | (D5 s-D5 s)/f 5|is less than or equal to 0.3.
For the six-piece optical imaging lens, and under the condition that the center thickness of the fourth lens is larger than the interval between the third interval element and the fourth interval element along the optical axis, the interval between the third interval element and the fourth interval element along the optical axis is slightly smaller than the center thickness of the fourth lens by configuration, so that the supporting strength of the edge of the fourth lens in the optical axis direction can be favorably improved, and the deformation of the fourth lens is avoided from being excessive during the reliability test. In addition, considering that the focal length of the fifth lens is generally large, by controlling the difference between the inner and outer diameters of the fifth spacing element within a reasonable range, the problem of excessive deformation of the fifth spacing element caused by a high-temperature and high-humidity environment can be avoided as much as possible. Therefore, according to the optical imaging lens provided by the aspect of the application, the deformation of the fourth lens and the fifth interval element is controlled within an acceptable range by reasonably controlling the relation of the center thickness CT4 of the fourth lens on the optical axis, the interval EP34 of the third interval element and the fourth interval element along the optical axis, the inner diameter D5s of the object side surface of the fifth interval element, the outer diameter D5s of the object side surface of the fifth interval element and the effective focal length f5 of the fifth lens, so that the structural stability of the optical imaging lens is improved.
In another aspect, the present application further provides an optical imaging lens, including a lens group, a spacer element group, and a lens barrel, where the lens group includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens sequentially arranged from an object side to an image side along an optical axis, the spacer element group includes a fifth spacer element disposed on the image side of the fifth lens, and the lens group and the spacer element group are accommodated in the lens barrel, where an effective focal length f5 of the fifth lens, an outer diameter D0m of an image side end surface of the lens barrel, and an inner diameter D5m of the image side surface of the fifth spacer element satisfy: 0.5< |f5|/(D0 m-D5 m) <3.0.
According to the optical imaging lens provided by the other aspect of the application, the fifth lens focal length, the caliber of the spacing element arranged on the object side surface of the fifth lens and the caliber distribution of the end surface of the lens barrel can be effectively controlled by configuring the proportionality coefficient of the difference value between the effective focal length of the fifth lens and the outer diameter of the end surface of the image side surface of the lens barrel and the inner diameter of the image side surface of the fifth spacing element, so that the structure is more stable, and the focusing precision and the imaging definition can be better controlled.
According to an exemplary embodiment of the present application, the spacer element group further includes a fourth spacer element disposed at the image side of the fourth lens, the effective focal length f4 of the fourth lens, the radius of curvature R4 of the image side of the second lens, the inner diameter D4s of the object side of the fourth spacer element, and the outer diameter D4s of the object side of the fourth spacer element satisfy: 1.0< f4/d4s+|R4/d4s| <4.0.
According to an exemplary embodiment of the present application, the spacer element group further includes a second spacer element disposed at the image side of the second lens, and the radius of curvature R3 of the object side of the second lens, the center thickness CT2 of the second lens on the optical axis, the inner diameter d2s of the object side of the second spacer element, and the inner diameter d2m of the image side of the second spacer element satisfy:
3.5<R3/d2s+d2m/CT2<4.5。
according to an exemplary embodiment of the present application, the effective focal length f1 of the first lens, the outer diameter D0s of the object side end surface of the lens barrel, and the inner diameter D0s of the object side end surface of the lens barrel satisfy: -10< f 1/(D0 s-D0 s) < -2.0.
According to an exemplary embodiment of the present application, the spacer element group further includes a third spacer element disposed at an image side of the third lens, an effective focal length f1 of the first lens, a radius of curvature R1 of an object side of the first lens, a radius of curvature R7 of an object side of the fourth lens, and an outer diameter D3s of the object side of the third spacer element satisfy: 4< f1/R1+R7/D3s <6.5.
According to an exemplary embodiment of the present application, the spacer element group further includes a third spacer element disposed on the image side of the third lens and a fourth spacer element disposed on the image side of the fourth lens, and the radius of curvature R5 of the object side of the third lens, the radius of curvature R7 of the object side of the fourth lens, the inner diameter d3s of the object side of the third spacer element, and the inner diameter d4m of the image side of the fourth spacer element satisfy: 2.5< |R5+R7|/(d3s+d4m) <4.5.
According to an exemplary embodiment of the present application, the spacer element group further includes a third spacer element disposed on the image side of the third lens and a fourth spacer element disposed on the image side of the fourth lens, and the radius of curvature R3 of the object side surface of the second lens, the radius of curvature R4 of the image side surface of the second lens, the outer diameter D4m of the image side surface of the fourth spacer element, and the inner diameter D3m of the image side surface of the third spacer element satisfy: 2.0< (R3-R4)/(D4 m-D3 m) <4.0.
According to an exemplary embodiment of the present application, the spacer element group further includes a second spacer element disposed on the image side of the second lens and a third spacer element disposed on the image side of the third lens, and a spacing EP23 of the second spacer element and the third spacer element along the optical axis, a radius of curvature R4 of the image side of the second lens, and a radius of curvature R5 of the object side of the third lens satisfy: EP23/|R5-R4| <0.1.
According to an exemplary embodiment of the present application, the spacer element group further includes a fourth spacer element disposed at the image side of the fourth lens, an inner diameter d5s of the object side surface of the fifth spacer element, a spacing EP45 of the fourth spacer element and the fifth spacer element along the optical axis, an inner diameter d5m of the image side surface of the fifth spacer element, and a maximum thickness CP5 of the fifth spacer element satisfy: 11< d5s/EP45+d5m/CP5<19.
According to an exemplary embodiment of the present application, both the object-side and image-side surfaces of the second lens are convex.
According to an exemplary embodiment of the present application, the object-side surface and the image-side surface of the fourth lens are both convex.
According to an exemplary embodiment of the present application, the largest of the absolute values of the focal lengths of the respective lenses of the lens group
The inner diameter d0s of the object side end surface of the lens barrel and the inner diameter d0m of the image side end surface of the lens barrel satisfy: (d 0m-d0 s)/|fmax| <0.2.
According to an exemplary embodiment of the present application, the minimum value |fmin| of the maximum height L of the lens barrel in the optical axis direction, the sum Σct of the center thicknesses of the respective lenses of the lens group on the optical axis, and the absolute value of the focal length of the respective lenses of the lens group satisfies: 4.0mm < L/ΣCT|fmin| <5.5mm.
According to an exemplary embodiment of the present application, an optical element is disposed between the first lens and the second lens, and the optical element may be one of a cover glass, a filter assembly, or an auto focus assembly.
According to an exemplary embodiment of the present application, a lens barrel includes a first barrel part in which a first lens is accommodated and a second barrel part in which an optical element and second to sixth lenses are accommodated.
Still another aspect of the present application provides an optical imaging lens including a lens group including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged in order from an object side to an image side along an optical axis, a spacer element group including a third spacer element disposed on the image side of the third lens and a fourth spacer element disposed on the image side of the fourth lens, and a lens barrel in which the lens group and the spacer element group are accommodated, wherein a radius of curvature R3 of an object side surface of the second lens, a radius of curvature R4 of an image side surface of the second lens, an outer diameter D4m of the image side surface of the fourth spacer element, and an inner diameter D3m of the image side surface of the third spacer element satisfy: 2.0< (R3-R4)/(D4 m-D3 m) <4.0.
According to the optical imaging lens provided in the further aspect of the application, the ratio of the difference between the curvature radius of the object side surface and the curvature radius of the image side surface of the second lens to the difference between the outer diameter of the image side surface of the fourth spacing element and the inner diameter of the image side surface of the third spacing element is reasonably controlled, namely, the curvature radius R3 of the object side surface of the second lens, the curvature radius R4 of the image side surface of the second lens, the outer diameter D4m of the image side surface of the fourth spacing element and the inner diameter D3m of the image side surface of the third spacing element are enabled to meet 2.0< (R3-R4)/(D4 m-D3 m) <4.0, so that the shape range of the second lens is effectively controlled, and the stability of optical distribution is increased.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings. In the drawings:
FIG. 1 shows a schematic structural view of an optical imaging lens according to the present application;
fig. 2 shows a schematic structural view of an optical imaging lens according to embodiment 1 of the present application;
fig. 3 shows a schematic structural view of an optical imaging lens according to embodiment 2 of the present application;
fig. 4 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;
fig. 5A to 5C show an on-axis chromatic aberration curve, an astigmatism curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens according to embodiments 1 to 3 of the present application;
fig. 6 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application;
fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 5 of the present application;
fig. 8 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application;
fig. 9A to 9C show on-axis chromatic aberration curves, astigmatism curves, and magnification chromatic aberration curves of the optical imaging lenses according to embodiments 4 to 6 of the present application, respectively;
fig. 10 shows a schematic structural view of an optical imaging lens according to embodiment 7 of the present application;
Fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 8 of the present application;
fig. 12 shows a schematic structural diagram of an optical imaging lens according to embodiment 9 of the present application; and
fig. 13A to 13C show on-axis chromatic aberration curves, astigmatism curves, and magnification chromatic aberration curves of the optical imaging lenses according to embodiments 7 to 9 of the present application, respectively.
Detailed Description
For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed description are merely illustrative of exemplary embodiments of the application and are not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification.
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. Specifically, 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 object is referred to 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 describing embodiments of the present application, use of "may" means "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, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
Fig. 1 shows a schematic diagram of a structural layout and a part of parameters of an optical imaging lens according to an exemplary embodiment of the present application. Fig. 1 illustrates only part of parameters of a lens barrel and a spacer element of an optical imaging lens of the present application for better understanding of the present application, as shown in fig. 1, D2s represents an inner diameter of an object side surface of a second spacer element, D2m represents an inner diameter of an image side surface of a second spacer element, D3s represents an inner diameter of an object side surface of a third spacer element, D3m represents an inner diameter of an image side surface of a third spacer element, D3s represents an outer diameter of an object side surface of a third spacer element, D4s represents an outer diameter of an object side surface of a fourth spacer element, D4s represents an inner diameter of an object side surface of a fourth spacer element, D4m represents an outer diameter of an image side surface of a fourth spacer element, d4m represents the inner diameter of the image side surface of the fourth spacing element, D5s represents the inner diameter of the object side surface of the fifth spacing element, D5m represents the inner diameter of the image side surface of the fifth spacing element, EP23 represents the spacing of the second spacing element and the third spacing element along the optical axis, EP34 represents the spacing of the third spacing element and the fourth spacing element along the optical axis, EP45 represents the spacing of the fourth spacing element and the fifth spacing element along the optical axis, L represents the length of the lens barrel in the optical axis direction, D0s represents the outer diameter of the object side end surface of the lens barrel, D0s represents the inner diameter of the object side end surface of the lens barrel, D0m represents the outer diameter of the image side end surface of the lens barrel, and D0m represents the inner diameter of the image side end surface of the lens barrel.
As shown in fig. 2 to 4, 6 to 8, and 10 to 12, the optical imaging lens according to the exemplary embodiment of the present application may include a lens group, a spacing element group, and a lens barrel. The lens group is a six-piece lens group including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged in order from an object side to an image side along an optical axis. The spacer element group comprises at least one spacer element arranged between adjacent lenses, for example for supporting the lenses and shielding stray light. The lens barrel is used for accommodating the lens group and the spacing element group.
In an exemplary embodiment, the lens barrel may be a split type lens barrel and include a first lens barrel part and a second lens barrel part. As an example, the first lens may be accommodated in the first barrel part, and the second to sixth lenses may be accommodated in the second barrel part. With this arrangement, it is advantageous to adjust the position of the first lens with respect to the second lens to the sixth lens during lens assembly. The second barrel part has an outer annular surface and an inner annular surface, and the inner annular surface may be stepped.
In an exemplary embodiment, an optical element may be disposed between the first lens and the second lens, and the optical element may be one of a cover glass, a filter assembly, or an auto focus assembly. As an example, the optical element may be disposed within the second barrel part of the barrel.
In an exemplary embodiment, the spacer element group may include a third spacer element disposed at the image side of the third lens, a fourth spacer element disposed at the image side of the fourth lens, and a fifth spacer element disposed at the image side of the fifth lens, a center thickness CT4 of the fourth lens on the optical axis, a spacing EP34 of the third and fourth spacer elements along the optical axis, an effective focal length f5 of the fifth lens, an inner diameter D5s of the object side of the fifth spacer element, and an outer diameter D5s of the object side of the fifth spacer element P5 may satisfy: 1.2< CT4/EP34<1.7, and | (D5 s-D5 s)/f 5|is less than or equal to 0.3. By reasonably controlling the relation among CT4, EP34, D5s, D5s and f5, the deformation of the fourth lens and the fifth interval element is favorably controlled within an acceptable range, thereby improving the structural stability of the optical imaging lens.
In an exemplary embodiment, the interval element group may include a fifth interval element disposed at an image side of the fifth lens, and an effective focal length f5 of the fifth lens, an outer diameter D0m of an image side end surface of the lens barrel, and an inner diameter D5m of the image side surface of the fifth interval element may satisfy: 0.5< |f5|/(D0 m-D5 m) <3.0. The effective focal length of the fifth lens and the caliber of the spacing element arranged on the object side surface of the fifth lens and the caliber distribution of the end surface of the lens barrel can be effectively controlled by configuring the proportionality coefficient of the difference value between the effective focal length of the fifth lens and the outer diameter of the end surface of the image side surface of the lens barrel and the inner diameter of the image side surface of the fifth spacing element, so that the structure is more stable, and the focusing precision and the imaging definition can be better controlled.
In an exemplary embodiment, the spacer element group may include a fourth spacer element disposed at an image side of the fourth lens, and an effective focal length f4 of the fourth lens, a radius of curvature R4 of an image side of the second lens, an inner diameter D4s of an object side of the fourth spacer element P4, and an outer diameter D4s of the object side of the fourth spacer element P4 may satisfy: 1.0< f4/d4s+|R4/d4s| <4.0. The shape and sensitivity of the fourth lens can be better controlled by controlling the sum of the ratio of the effective focal length of the fourth lens to the outer diameter of the object side of the fourth spacing element and the ratio of the curvature radius of the image side of the fourth lens to the inner diameter of the image side of the fourth spacing element, so that the rationality of the arrangement of the whole lens group is improved.
In an exemplary embodiment, the spacer element group includes a second spacer element disposed at the image side of the second lens, and the radius of curvature R3 of the object side of the second lens, the center thickness CT2 of the second lens on the optical axis, the inner diameter d2s of the object side of the second spacer element, and the inner diameter d2m of the image side of the second spacer element may satisfy: 3.5< R3/d2s+d2m/CT2<4.5. The shape and sensitivity of the second lens can be better controlled by controlling the sum of the ratio of the curvature radius of the object side surface of the second lens to the inner diameter of the object side surface of the second spacing element and the ratio of the inner diameter of the image side surface of the second spacing element to the middle thickness of the second lens, so that the rationality of the whole lens group arrangement is improved.
In an exemplary embodiment, the effective focal length f1 of the first lens, the outer diameter D0s of the object-side end surface of the lens barrel, and the inner diameter D0s of the object-side end surface of the lens barrel may satisfy: -10< f 1/(D0 s-D0 s) < -2.0. The size of the first lens can be better controlled by controlling the ratio of the effective focal length of the first lens to the difference value of the outer diameter and the inner diameter of the object side end surface of the lens barrel, and the compactness of the lens is improved.
In an exemplary embodiment, the spacer element group may include a third spacer element disposed at an image side of the third lens, and the effective focal length f1 of the first lens, the radius of curvature R1 of the object side of the first lens, the radius of curvature R7 of the object side of the fourth lens, and the outer diameter D3s of the object side of the third spacer element may satisfy: 4< f1/R1+R7/D3s <6.5. By controlling the sum of the ratio of the focal length of the first lens and the curvature radius of the object side surface of the first lens and the ratio of the curvature radius of the object side surface of the fourth lens and the outer diameter of the object side surface of the third spacing element, more reasonable optical layout is achieved, and the compactness of the optical imaging lens is improved.
In an exemplary embodiment, the spacer element group may include a third spacer element disposed at the image side of the third lens and a fourth spacer element disposed at the image side of the fourth lens, and the radius of curvature R5 of the object side of the third lens, the radius of curvature R7 of the object side of the fourth lens, the inner diameter d3s of the object side of the third spacer element, and the inner diameter d4m of the image side of the fourth spacer element may satisfy: 2.5< |R5+R7|/(d3s+d4m) <4.5. By controlling the ratio of the absolute value of the sum of the object-side surface curvature radiuses of the third lens and the fourth lens to the sum of the object-side surface inner diameter of the third spacing element and the image-side surface inner diameter of the fourth spacing element, the compactness between the third lens and the fourth lens is improved, and the stability of the lens is improved.
In an exemplary embodiment, the spacer element group may include a third spacer element disposed at the image side of the third lens and a fourth spacer element disposed at the image side of the fourth lens, and the radius of curvature R3 of the object side of the second lens, the radius of curvature R4 of the image side of the second lens, the outer diameter D4m of the image side of the fourth spacer element, and the inner diameter D3m of the image side of the third spacer element may satisfy: 2.0< (R3-R4)/(D4 m-D3 m) <4.0. By controlling the ratio of the difference between the radius of curvature of the object-side surface and the image-side surface of the second lens element to the difference between the outer diameter of the image-side surface of the fourth spacer element and the inner diameter of the image-side surface of the third spacer element, the range of shapes of the second lens element is controlled, and the stability of the optical distribution is increased.
In an exemplary embodiment, the interval element group may include a second interval element disposed at the image side of the second lens and a third interval element disposed at the image side of the third lens, and an interval EP23 of the second interval element and the third interval element along the optical axis, a radius R4 of curvature of the image side of the second lens, and a radius R5 of curvature of the object side of the third lens may satisfy: EP23/|R5-R4| <0.1. By controlling the ratio of the difference between the radius of curvature of the object-side surface of the third lens and the radius of curvature of the image-side surface of the second lens to the distance between the second spacer element and the third spacer element, the rationality and compactness of the optical layout are increased.
In an exemplary embodiment, the interval element group may include a fourth interval element disposed at the image side of the fourth lens and a fifth interval element disposed at the image side of the fifth lens, and an inner diameter d5s of an object side surface of the fifth interval element, an interval EP45 of the fourth interval element and the fifth interval element along the optical axis, an inner diameter d5m of an image side surface of the fifth interval element, and a maximum thickness CP5 of the fifth interval element may satisfy: 11< d5s/EP45+d5m/CP5<19. The distance between the fourth interval element and the fifth interval element and the inner diameters of the two sides of the object image of the fifth interval element are controlled, so that the position distribution of the fourth lens and the fifth lens is controlled, and the stability of the lens structure is improved.
In an exemplary embodiment, both the object side and the image side of the second lens are convex. The second lens is arranged as a biconvex lens, which is favorable for controlling the light trend and improving the optical performance of the lens.
In an exemplary embodiment, the fourth lens element has a convex object-side surface and a convex image-side surface. The fourth lens is arranged as a biconvex lens, which is favorable for controlling the light ray trend and improving the optical performance of the lens.
In an exemplary embodiment, the maximum of absolute values of focal lengths of the respective lenses of the lens group |fmax|, an inner diameter d0s of the object side end surface of the lens barrel, and an inner diameter d0m of the image side end surface of the lens barrel may satisfy: (d 0m-d0 s)/|fmax| <0.2. The balance between the optical distribution and the structural design of the lens barrel can be effectively controlled by controlling the proportion of the distribution of the focal length and the inner diameters of the two sides of the lens barrel in the whole optical design, and the stability of the lens is improved. As an example, 0< (d 0m-d0 s)/|fmax| <0.2.
In the exemplary embodiment, the minimum one |fmin| among the maximum height L of the lens barrel in the optical axis direction, the sum Σct of the center thicknesses of the respective lenses of the lens group on the optical axis, and the absolute values of the focal lengths of the respective lenses of the lens group may satisfy: 4.0mm < L/ΣCT|fmin| <5.5mm. By controlling the ratio of the height dimension of the lens barrel to the sum of thicknesses of all lenses, the rationality of the lens structure and optical distribution is improved, and the stability of the lens is increased.
The optical imaging lens according to the above-described embodiments of the present application may employ six lenses and at least one spacer element. Through the reasonable parameter distribution in the aspects, on one hand, the compactness between lenses of the optical imaging lens can be improved, and on the other hand, the balance between the optical layout and the structural design of the lens barrel can be controlled, so that the overall arrangement layout of the optical imaging lens is more reasonable, the stability of the optical imaging lens is improved, the focusing accuracy of the optical imaging lens is higher, and the imaging quality is better. However, it will be appreciated by those skilled in the art that the number of lenses and spacer elements constituting the optical imaging lens may be varied to achieve the various results and advantages described in the present specification without departing from the technical solutions claimed herein.
Specific examples of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.
An optical imaging lens according to embodiments 1 to 3 of the present application is described below with reference to fig. 2 to 5C.
Example 1
Fig. 2 shows a schematic configuration diagram of an optical imaging lens 110 according to embodiment 1 of the present application.
As shown in fig. 2, the optical imaging lens 110 includes a lens barrel P0, and a lens group and a spacer element group disposed within the lens barrel P0. The lens group may include, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. An optical element, which may be, for example, a cover glass, may be disposed between the first lens E1 and the second lens E2. The spacer element group may include a second spacer element P2 disposed between the second lens E2 and the third lens E3, a third spacer element P3 disposed between the third lens E3 and the fourth lens E4, a fourth spacer element P4 disposed between the fourth lens E4 and the fifth lens E5, and a fifth spacer element P5 disposed between the fifth lens E5 and the sixth lens E6. As an example, the lens barrel P0 may be a segmented lens barrel and include a first lens barrel part and a second lens barrel part, wherein the first lens E1 may be accommodated in the first lens barrel part of the lens barrel P0, and the cover glass and the second to sixth lenses E2 to E6 may be accommodated in the second lens barrel part of the lens barrel P0.
The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is concave, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is convex. The third lens element E3 has negative 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 positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave.
A stop STO (not shown) may be provided between, for example, the second lens E2 and the third lens E3 according to actual needs.
Table 1 shows the basic parameter table of the lens group in the optical imaging lens of embodiment 1, in which the unit of radius of curvature, thickness/distance is millimeter (mm).
TABLE 1
In embodiment 1, the value of the f-number Fno of the optical imaging lens is 2.22, and the object side surface and the image side surface of any one of the first lens element E1, the second lens element E2, the third lens element E3, the fourth lens element E4, the fifth lens element E5, and the sixth lens element E6 are aspherical surfaces.
Table 2 shows the higher order coefficients A that can be used for each of the aspherical mirror surfaces S1-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 And A 28 。
TABLE 2
Table 3 shows some basic parameters of the lens barrel, the spacer element, of the optical imaging lens 110 of embodiment 1, such as D2s, D2m, D3s, D3m, D3s, D4m, D4s, D4m, D5s, D5m, D5s, D0m, D0s, D0m, EP23, EP34, EP45, CP5, and L, some of the basic parameters listed in table 3 were measured according to the labeling method shown in fig. 1, and the basic parameters listed in table 3 were all in millimeters (mm).
| Examples/parameters | d2s | d2m | d3s | d3m | D3s | d4s | d4m |
| 1 | 1.42 | 1.43 | 1.38 | 1.38 | 2.38 | 1.74 | 1.74 |
| Examples/parameters | D4s | D4m | d5s | d5m | D5s | d0s | d0m |
| 1 | 3.04 | 3.04 | 2.56 | 2.82 | 3.48 | 2.99 | 4.42 |
| Examples/parameters | D0s | D0m | EP23 | EP34 | EP45 | CP5 | L |
| 1 | 3.53 | 6.57 | 0.40 | 0.35 | 0.56 | 0.32 | 5.58 |
TABLE 3 Table 3
Example 2
Fig. 3 shows a schematic structural diagram of an optical imaging lens 120 according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens 120 includes a lens barrel P0, and a lens group and a spacer element group disposed within the lens barrel P0. The lens group may include, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. An optical element, which may be, for example, a cover glass, may be disposed between the first lens E1 and the second lens E2. The spacer element group may include a second spacer element P2 disposed between the second lens E2 and the third lens E3, a third spacer element P3 disposed between the third lens E3 and the fourth lens E4, a fourth spacer element P4 disposed between the fourth lens E4 and the fifth lens E5, and a fifth spacer element P5 disposed between the fifth lens E5 and the sixth lens E6. As an example, the lens barrel P0 may be a segmented lens barrel and include a first lens barrel part and a second lens barrel part, wherein the first lens E1 may be accommodated in the first lens barrel part of the lens barrel P0, and the cover glass and the second to sixth lenses E2 to E6 may be accommodated in the second lens barrel part of the lens barrel P0.
The optical imaging lens 120 in embodiment 2 is the same as the lens group portion of the optical imaging lens 110 of embodiment 1, i.e., the basic parameter table and the aspherical coefficient table of the lens group in the optical imaging lens 120 of the present embodiment are the same as table 1 and table 2, respectively. The present embodiment is different from embodiment 1 in that the structural dimensions of the lens barrel and the spacer member included are different. The structural dimensions of the barrel, spacer element of the optical imaging lens 120 in embodiment 2 are listed in table 4 below, and the basic parameters listed in table 4 are all in millimeters (mm).
| Examples/parameters | d2s | d2m | d3s | d3m | D3s | d4s | d4m |
| 2 | 1.47 | 1.43 | 1.38 | 1.38 | 2.51 | 1.74 | 1.74 |
| Examples/parameters | D4s | D4m | d5s | d5m | D5s | d0s | d0m |
| 2 | 3.04 | 3.04 | 2.56 | 2.28 | 3.48 | 3.09 | 4.42 |
| Examples/parameters | D0s | D0m | EP23 | EP34 | EP45 | CP5 | L |
| 2 | 3.53 | 6.70 | 0.39 | 0.34 | 0.56 | 0.32 | 5.58 |
TABLE 4 Table 4
Example 3
Fig. 4 shows a schematic structural diagram of an optical imaging lens 130 according to embodiment 3 of the present application.
As shown in fig. 4, the optical imaging lens 130 includes a lens barrel P0, and a lens group and a spacer element group disposed within the lens barrel P0. The lens group may include, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. An optical element, which may be, for example, a cover glass, may be disposed between the first lens E1 and the second lens E2. The spacer element group may include a second spacer element P2 disposed between the second lens E2 and the third lens E3, a third spacer element P3 disposed between the third lens E3 and the fourth lens E4, a fourth spacer element P4 disposed between the fourth lens E4 and the fifth lens E5, and a fifth spacer element P5 disposed between the fifth lens E5 and the sixth lens E6. As an example, the lens barrel P0 may be a segmented lens barrel and include a first lens barrel part and a second lens barrel part, wherein the first lens E1 may be accommodated in the first lens barrel part of the lens barrel P0, and the cover glass and the second to sixth lenses E2 to E6 may be accommodated in the second lens barrel part of the lens barrel P0.
The optical imaging lens 130 in embodiment 3 is the same as the lens group portion of the optical imaging lens 110 of embodiment 1, that is, the basic parameter table and the aspherical coefficient table of the lens group in the optical imaging lens 130 of the present embodiment are the same as table 1 and table 2, respectively. The present embodiment is different from embodiment 1 in that the structural dimensions of the lens barrel and the spacer member included are different. The structural dimensions of the barrel, spacer element of the optical imaging lens 130 in embodiment 3 are listed in table 5 below, and the basic parameters listed in table 5 are all in millimeters (mm).
| Examples/parameters | d2s | d2m | d3s | d3m | D3s | d4s | d4m |
| 3 | 1.42 | 1.43 | 1.38 | 1.38 | 2.38 | 1.74 | 1.74 |
| Examples/parameters | D4s | D4m | d5s | d5m | D5s | d0s | d0m |
| 3 | 3.04 | 3.04 | 2.61 | 2.87 | 3.48 | 3.26 | 4.49 |
| Examples/parameters | D0s | D0m | EP23 | EP34 | EP45 | CP5 | L |
| 3 | 4.42 | 6.17 | 0.40 | 0.35 | 0.56 | 0.32 | 5.58 |
TABLE 5
Fig. 5A shows on-axis chromatic aberration curves of the optical imaging lenses 110, 120, 130 of embodiments 1-3, which represent the deviation of the converging focal points of light rays of different wavelengths via the optical imaging lenses 110, 120, 130. Fig. 9B shows astigmatism curves of the optical imaging lenses 110, 120, 130 of embodiments 1-3, which represent meridional image surface curvature and sagittal image surface curvature corresponding to different image heights. Fig. 9C shows the magnification chromatic aberration curves of the optical imaging lenses 110, 120, 130 of embodiments 1-3, which represent the deviation of different image heights on the imaging plane after light passes through the lenses. As can be seen from fig. 9A to 9C, the optical imaging lenses 110, 120, 130 according to embodiments 1-3 can achieve good imaging quality.
An optical imaging lens according to embodiments 4 to 6 of the present application is described below with reference to fig. 6 to 9C.
Example 4
Fig. 6 shows a schematic structural diagram of an optical imaging lens 210 according to embodiment 4 of the present application.
As shown in fig. 6, the optical imaging lens 210 includes a lens barrel P0, and a lens group and a spacer element group disposed within the lens barrel P0. The lens group may include, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. An optical element may be disposed between the first lens E1 and the second lens E2, and the optical element may be, for example, a filter element. The spacer element group may include a second spacer element P2 disposed between the second lens E2 and the third lens E3, a third spacer element P3 disposed between the third lens E3 and the fourth lens E4, a fourth spacer element P4 disposed between the fourth lens E4 and the fifth lens E5, and a fifth spacer element P5 disposed between the fifth lens E5 and the sixth lens E6. As an example, the lens barrel P0 may be a segmented lens barrel and include a first lens barrel part and a second lens barrel part, wherein the first lens E1 may be accommodated in the first lens barrel part of the lens barrel P0, and the filter element and the second to sixth lenses E2 to E6 may be accommodated in the second lens barrel part of the lens barrel P0.
The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is concave, and an image-side surface S2 thereof is convex. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is convex. The third lens element E3 has negative 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 positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative 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 stop STO (not shown) may be provided between, for example, the first lens E1 and the second lens E2 according to actual needs.
Table 6 shows the basic parameter table of the lens group in the optical imaging lens of embodiment 4, in which the unit of radius of curvature, thickness/distance is millimeter (mm).
TABLE 6
In embodiment 4, the value of the f-number Fno of the optical imaging lens is 2.22, and the object side surface and the image side surface of any one of the first lens element E1, the second lens element E2, the third lens element E3, the fourth lens element E4, the fifth lens element E5, and the sixth lens element E6 are aspherical surfaces.
Table 7 shows the higher order coefficients A that can be used for each of the aspherical mirror surfaces S1-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 And A 26 。
TABLE 7
Table 8 shows some basic parameters of the lens barrel, the spacer element, of the optical imaging lens 210 of embodiment 4, such as D2s, D2m, D3s, D3m, D3s, D4m, D4s, D4m, D5s, D5m, D5s, D0m, D0s, D0m, EP23, EP34, EP45, CP5, and L, some of the basic parameters listed in table 8 were measured according to the labeling method shown in fig. 1, and the basic parameters listed in table 8 were all in millimeters (mm).
| Examples/parameters | d2s | d2m | d3s | d3m | D3s | d4s | d4m |
| 4 | 1.33 | 1.33 | 1.63 | 1.63 | 3.10 | 2.12 | 2.14 |
| Examples/parameters | D4s | D4m | d5s | d5m | D5s | d0s | d0m |
| 4 | 3.15 | 3.15 | 2.97 | 3.11 | 3.57 | 3.13 | 4.49 |
| Examples/parameters | D0s | D0m | EP23 | EP34 | EP45 | CP5 | L |
| 4 | 5.07 | 6.57 | 0.49 | 0.44 | 0.62 | 0.23 | 5.16 |
TABLE 8
Example 5
Fig. 7 shows a schematic structural diagram of an optical imaging lens 220 according to embodiment 5 of the present application.
As shown in fig. 7, the optical imaging lens 220 includes a lens barrel P0, and a lens group and a spacer element group disposed within the lens barrel P0. The lens group may include, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. An optical element may be disposed between the first lens E1 and the second lens E2, and the optical element may be, for example, a filter element. The spacer element group may include a second spacer element P2 disposed between the second lens E2 and the third lens E3, a third spacer element P3 disposed between the third lens E3 and the fourth lens E4, a fourth spacer element P4 disposed between the fourth lens E4 and the fifth lens E5, and a fifth spacer element P5 disposed between the fifth lens E5 and the sixth lens E6. As an example, the lens barrel P0 may be a segmented lens barrel and include a first lens barrel part and a second lens barrel part, wherein the first lens E1 may be accommodated in the first lens barrel part of the lens barrel P0, and the filter element and the second to sixth lenses E2 to E6 may be accommodated in the second lens barrel part of the lens barrel P0.
The optical imaging lens 220 in embodiment 5 is the same as the lens group portion of the optical imaging lens 210 of embodiment 4, that is, the basic parameter table and the aspherical coefficient table of the lens group in the optical imaging lens 220 of the present embodiment are the same as table 6 and table 7, respectively. The present embodiment is different from embodiment 4 in that the structural dimensions of the lens barrel and the spacer member included are different. The structural dimensions of the barrel, spacer element of the optical imaging lens 220 in embodiment 5 are listed in table 9 below, and the basic parameters listed in table 9 are all in millimeters (mm).
| Examples/parameters | d2s | d2m | d3s | d3m | D3s | d4s | d4m |
| 5 | 1.33 | 1.33 | 1.70 | 1.70 | 3.10 | 2.23 | 2.25 |
| Examples/parameters | D4s | D4m | d5s | d5m | D5s | d0s | d0m |
| 5 | 3.09 | 3.10 | 2.94 | 3.15 | 3.57 | 3.13 | 4.49 |
| Examples/parameters | D0s | D0m | EP23 | EP34 | EP45 | CP5 | L |
| 5 | 5.06 | 6.47 | 0.48 | 0.44 | 0.62 | 0.23 | 5.26 |
TABLE 9
Example 6
Fig. 8 shows a schematic structural diagram of an optical imaging lens 230 according to embodiment 6 of the present application.
As shown in fig. 8, the optical imaging lens 230 includes a lens barrel P0, and a lens group and a spacer element group disposed within the lens barrel P0. The lens group may include, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. An optical element may be disposed between the first lens E1 and the second lens E2, and the optical element may be, for example, a filter element. The spacer element group may include a second spacer element P2 disposed between the second lens E2 and the third lens E3, a third spacer element P3 disposed between the third lens E3 and the fourth lens E4, a fourth spacer element P4 disposed between the fourth lens E4 and the fifth lens E5, and a fifth spacer element P5 disposed between the fifth lens E5 and the sixth lens E6. As an example, the lens barrel P0 may be a segmented lens barrel and include a first lens barrel part and a second lens barrel part, wherein the first lens E1 may be accommodated in the first lens barrel part of the lens barrel P0, and the filter element and the second to sixth lenses E2 to E6 may be accommodated in the second lens barrel part of the lens barrel P0.
The optical imaging lens 230 in embodiment 6 is the same as the lens group portion of the optical imaging lens 210 of embodiment 4, that is, the basic parameter table and the aspherical coefficient table of the lens group in the optical imaging lens 230 of the present embodiment are the same as table 6 and table 7, respectively. The present embodiment is different from embodiment 4 in that the structural dimensions of the lens barrel and the spacer member included are different. The structural dimensions of the barrel, spacer element of the optical imaging lens 230 in embodiment 6 are listed in table 10 below, and the basic parameters listed in table 10 are all in millimeters (mm).
Table 10
Fig. 9A shows on-axis chromatic aberration curves of the optical imaging lenses 210, 220, and 230 of examples 4 to 6, which represent the deviation of the converging focal points of light rays of different wavelengths after passing through the optical imaging lenses 210, 220, and 230. Fig. 9B shows astigmatism curves of the optical imaging lenses 210, 220, and 230 of embodiments 4 to 6, which represent meridional image surface curvature and sagittal image surface curvature corresponding to different image heights. Fig. 9C shows the magnification chromatic aberration curves of the optical imaging lenses 210, 220, and 230 of examples 4 to 6, which represent the deviation of different image heights on the imaging plane after light passes through the lenses. As can be seen from fig. 9A to 9C, the optical imaging lenses 210, 220, and 230 according to embodiments 4 to 6 can achieve good imaging quality.
An optical imaging lens according to embodiments 7 to 9 of the present application is described below with reference to fig. 10 to 13C.
Example 7
Fig. 10 shows a schematic structural diagram of an optical imaging lens 310 according to embodiment 7 of the present application.
As shown in fig. 10, the optical imaging lens 310 includes a lens barrel P0, and a lens group and a spacer element group disposed within the lens barrel P0. The lens group may include, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. An optical element may be disposed between the first lens E1 and the second lens E2, and the optical element may be, for example, an auto-focusing element. The spacer element group may include a second spacer element P2 disposed between the second lens E2 and the third lens E3, a third spacer element P3 disposed between the third lens E3 and the fourth lens E4, a fourth spacer element P4 disposed between the fourth lens E4 and the fifth lens E5, and a fifth spacer element P5 disposed between the fifth lens E5 and the sixth lens E6. As an example, the lens barrel P0 may be a segmented lens barrel and include a first lens barrel part and a second lens barrel part, wherein the first lens E1 may be accommodated within the first lens barrel part of the lens barrel P0, and the auto-focusing element and the second to sixth lenses E2 to E6 may be accommodated within the second lens barrel part of the lens barrel P0.
The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is concave, and an image-side surface S2 thereof is convex. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is convex. The third lens element E3 has negative 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 positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave 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 stop STO (not shown) may be provided between, for example, the first lens E1 and the second lens E2 according to actual needs.
Table 11 shows a basic parameter table of a lens group in the optical imaging lens of embodiment 7, in which the unit of curvature radius, thickness/distance is millimeter (mm).
TABLE 11
In embodiment 7, the value of the f-number Fno of the optical imaging lens is 2.22, and the object side surface and the image side surface of any one of the first lens element E1, the second lens element E2, the third lens element E3, the fourth lens element E4, the fifth lens element E5, and the sixth lens element E6 are aspherical.
Table 12 shows the higher order coefficients A that can be used for each of the aspherical mirror surfaces S1-S12 in example 7 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 And A 26 。
| Face number | A4 | A6 | A8 | A10 | A12 | A14 |
| S1 | 3.44E-01 | -5.70E-02 | 9.86E-03 | -1.50E-03 | 4.86E-04 | -9.19E-05 |
| S2 | 3.53E-01 | -1.44E-02 | 4.06E-03 | -2.16E-04 | 4.69E-04 | 1.11E-04 |
| S3 | 1.00E-02 | -1.46E-03 | -2.68E-04 | -4.93E-05 | -9.00E-06 | -5.15E-06 |
| S4 | -2.52E-02 | -5.28E-03 | -9.01E-04 | 6.29E-05 | -1.15E-04 | 5.01E-05 |
| S5 | -6.11E-02 | -3.57E-03 | 2.60E-04 | 3.76E-04 | -6.50E-05 | 5.34E-05 |
| S6 | -2.27E-02 | 2.27E-03 | 7.64E-04 | 4.08E-04 | -1.59E-04 | 5.04E-06 |
| S7 | -6.79E-02 | 4.08E-03 | 1.68E-03 | 7.54E-04 | -4.13E-04 | -1.84E-04 |
| S8 | 1.97E-02 | 7.06E-03 | 6.47E-03 | 2.93E-03 | -1.58E-04 | -2.77E-04 |
| S9 | 3.37E-02 | -2.84E-02 | 2.78E-03 | 3.06E-03 | -1.66E-03 | 4.02E-04 |
| S10 | 1.73E-01 | -2.07E-02 | -6.16E-03 | 5.12E-03 | -6.22E-03 | 3.69E-03 |
| S11 | -7.65E-01 | 1.81E-01 | -2.03E-02 | -5.58E-03 | -1.81E-03 | 2.23E-03 |
| S12 | -8.58E-01 | 9.80E-02 | -1.77E-02 | 8.32E-03 | -4.22E-03 | 4.40E-04 |
| Face number | A16 | A18 | A20 | A22 | A24 | A26 |
| S1 | 1.64E-05 | -2.79E-06 | 5.79E-07 | 0.00E+00 | 0.00E+00 | 0.00E+00 |
| S2 | 7.35E-05 | 2.36E-05 | 8.38E-06 | 0.00E+00 | 0.00E+00 | 0.00E+00 |
| S3 | 1.10E-06 | -1.51E-06 | 3.54E-06 | 0.00E+00 | 0.00E+00 | 0.00E+00 |
| S4 | -1.97E-05 | 1.04E-06 | -1.15E-05 | 0.00E+00 | 0.00E+00 | 0.00E+00 |
| S5 | -2.93E-05 | -3.64E-06 | -1.18E-05 | 0.00E+00 | 0.00E+00 | 0.00E+00 |
| S6 | -1.83E-05 | -1.11E-05 | -3.32E-06 | 0.00E+00 | 0.00E+00 | 0.00E+00 |
| S7 | -3.67E-05 | 1.57E-05 | -6.94E-07 | 0.00E+00 | 0.00E+00 | 0.00E+00 |
| S8 | -1.02E-04 | -2.92E-05 | 1.29E-05 | 0.00E+00 | 0.00E+00 | 0.00E+00 |
| S9 | -1.38E-04 | -8.12E-05 | -5.33E-05 | -4.05E-05 | 0.00E+00 | 0.00E+00 |
| S10 | -1.52E-03 | 1.74E-04 | -1.15E-04 | 8.06E-05 | 0.00E+00 | 0.00E+00 |
| S11 | 3.95E-04 | -9.65E-04 | 1.57E-04 | -4.27E-05 | 8.25E-05 | -1.26E-04 |
| S12 | -8.26E-05 | 3.45E-04 | 1.03E-04 | 0.00E+00 | 0.00E+00 | 0.00E+00 |
Table 12
Table 13 shows some basic parameters of the lens barrel, the spacer element, of the optical imaging lens 310 of example 7, such as D2s, D2m, D3s, D3m, D3s, D4m, D4s, D4m, D5s, D5m, D5s, D0m, D0s, D0m, EP23, EP34, EP45, CP5, and L, some of the basic parameters listed in table 13 were measured according to the labeling method shown in fig. 1, and the basic parameters listed in table 13 were all in millimeters (mm).
| Examples/parameters | d2s | d2m | d3s | d3m | D3s | d4s | d4m |
| 7 | 1.55 | 1.56 | 1.54 | 1.54 | 3.02 | 2.21 | 2.21 |
| Examples/parameters | D4s | D4m | d5s | d5m | D5s | d0s | d0m |
| 7 | 3.21 | 3.21 | 2.77 | 3.15 | 3.87 | 3.00 | 4.77 |
| Examples/parameters | D0s | D0m | EP23 | EP34 | EP45 | CP5 | L |
| 7 | 4.02 | 6.70 | 0.41 | 0.44 | 0.75 | 0.22 | 5.29 |
TABLE 13
Example 8
Fig. 11 shows a schematic structural diagram of an optical imaging lens 320 according to embodiment 8 of the present application.
As shown in fig. 11, the optical imaging lens 310 includes a lens barrel P0, and a lens group and a spacer element group disposed within the lens barrel P0. The lens group may include, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. An optical element may be disposed between the first lens E1 and the second lens E2, and the optical element may be, for example, an auto-focusing element. The spacer element group may include a second spacer element P2 disposed between the second lens E2 and the third lens E3, a third spacer element P3 disposed between the third lens E3 and the fourth lens E4, a fourth spacer element P4 disposed between the fourth lens E4 and the fifth lens E5, and a fifth spacer element P5 disposed between the fifth lens E5 and the sixth lens E6. As an example, the lens barrel P0 may be a segmented lens barrel and include a first lens barrel part and a second lens barrel part, wherein the first lens E1 may be accommodated within the first lens barrel part of the lens barrel P0, and the auto-focusing element and the second to sixth lenses E2 to E6 may be accommodated within the second lens barrel part of the lens barrel P0.
The optical imaging lens 320 in embodiment 8 is the same as the lens group portion of the optical imaging lens 310 of embodiment 7, that is, the basic parameter table and the aspherical coefficient table of the lens group in the optical imaging lens 320 of the present embodiment are the same as table 11 and table 12, respectively. The present embodiment is different from embodiment 7 in that the structural dimensions of the lens barrel and the spacer member included are different. The structural dimensions of the lens barrel and the spacer element of the optical imaging lens 320 in embodiment 8 are as follows
Table 14 shows the basic parameters in millimeters (mm) and Table 14 shows the basic parameters.
| Examples/parameters | d2s | d2m | d3s | d3m | D3s | d4s | d4m |
| 8 | 1.66 | 1.60 | 1.50 | 1.50 | 3.13 | 2.21 | 2.21 |
| Examples/parameters | D4s | D4m | d5s | d5m | D5s | d0s | d0m |
| 8 | 3.29 | 3.29 | 2.77 | 3.15 | 3.63 | 3.00 | 4.77 |
| Examples/parameters | D0s | D0m | EP23 | EP34 | EP45 | CP5 | L |
| 8 | 4.00 | 6.70 | 0.41 | 0.44 | 0.74 | 0.22 | 5.29 |
TABLE 14
Examples9
Fig. 12 shows a schematic configuration diagram of an optical imaging lens 330 according to embodiment 9 of the present application.
As shown in fig. 12, the optical imaging lens 310 includes a lens barrel P0, and a lens group and a spacer element group disposed within the lens barrel P0. The lens group may include, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. An optical element may be disposed between the first lens E1 and the second lens E2, and the optical element may be, for example, an auto-focusing element. The spacer element group may include a second spacer element P2 disposed between the second lens E2 and the third lens E3, a third spacer element P3 disposed between the third lens E3 and the fourth lens E4, a fourth spacer element P4 disposed between the fourth lens E4 and the fifth lens E5, and a fifth spacer element P5 disposed between the fifth lens E5 and the sixth lens E6. As an example, the lens barrel P0 may be a segmented lens barrel and include a first lens barrel part and a second lens barrel part, wherein the first lens E1 may be accommodated within the first lens barrel part of the lens barrel P0, and the auto-focusing element and the second to sixth lenses E2 to E6 may be accommodated within the second lens barrel part of the lens barrel P0.
The optical imaging lens 330 in embodiment 9 is the same as the lens group portion of the optical imaging lens 310 of embodiment 7, that is, the basic parameter table and the aspherical coefficient table of the lens group in the optical imaging lens 330 of the present embodiment are the same as table 11 and table 12, respectively. The present embodiment is different from embodiment 7 in that the structural dimensions of the lens barrel and the spacer member included are different. The structural dimensions of the barrel and spacer element of the optical imaging lens 330 in embodiment 9 are as follows
Table 15 shows the basic parameters listed in Table 15 in millimeters (mm).
| Examples/parameters | d2s | d2m | d3s | d3m | D3s | d4s | d4m |
| 9 | 1.68 | 1.67 | 1.52 | 1.52 | 3.02 | 2.32 | 2.42 |
| Examples/parameters | D4s | D4m | d5s | d5m | D5s | d0s | d0m |
| 9 | 3.00 | 3.08 | 2.72 | 3.15 | 3.42 | 3.06 | 4.77 |
| Examples/parameters | D0s | D0m | EP23 | EP34 | EP45 | CP5 | L |
| 9 | 4.34 | 6.70 | 0.41 | 0.43 | 0.63 | 0.22 | 5.29 |
TABLE 15
Fig. 13A shows on-axis chromatic aberration curves of the optical imaging lenses 310, 320, and 330 of examples 7 to 9, which represent the deviation of the converging focal points of light rays of different wavelengths after passing through the optical imaging lenses 310, 320, and 330. Fig. 13B shows astigmatism curves of the optical imaging lenses 310, 320, and 330 of embodiments 7 to 9, which represent meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Fig. 13C shows the magnification chromatic aberration curves of the optical imaging lenses 310, 320, and 330 of examples 7 to 9, which represent the deviation of different image heights on the imaging plane after light passes through the lenses. As can be seen from fig. 13A to 13C, the optical imaging lenses 310, 320, and 330 of embodiments 7 to 9 can achieve good imaging quality.
Table 16 shows the optical imaging lenses of embodiments 1 to 9 and the focal length values of the respective lenses, in which the unit of focal length is millimeters (mm).
Table 16
Table 17 shows the values of the conditional expressions of each of examples 1 to 9.
| Conditional\embodiment | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| |(D5s-d5s)/f5| | 0.30 | 0.30 | 0.29 | 0.13 | 0.13 | 0.14 | 0.11 | 0.09 | 0.07 |
| f4/D4s+|R4/d4s| | 3.32 | 3.32 | 3.32 | 2.24 | 2.18 | 2.07 | 1.87 | 1.85 | 1.85 |
| CT4/EP34 | 1.49 | 1.55 | 1.49 | 1.61 | 1.61 | 1.68 | 1.24 | 1.24 | 1.27 |
| R3/d2s+d2m/CT2 | 4.00 | 3.96 | 4.00 | 4.90 | 4.90 | 4.94 | 4.53 | 4.53 | 4.66 |
| (D0s-d0s)/f1 | -0.14 | -0.11 | -0.29 | -0.45 | -0.45 | -0.36 | -0.22 | -0.22 | -0.28 |
| (d0m-d0s)/|fmax| | 0.12 | 0.11 | 0.10 | 0.04 | 0.04 | 0.04 | 0.18 | 0.18 | 0.17 |
| |f5|/(D0m-d5m) | 0.82 | 0.69 | 0.93 | 1.35 | 1.41 | 1.64 | 2.79 | 2.79 | 2.79 |
| f1/R1+R7/D3s | 4.80 | 4.62 | 4.80 | 6.01 | 6.01 | 6.01 | 4.54 | 4.45 | 4.54 |
| L/∑CT*|fmin| | 5.08 | 5.08 | 5.08 | 5.06 | 5.15 | 5.06 | 4.26 | 4.26 | 4.26 |
| |R5+R7|/(d3s+d4m) | 3.63 | 3.63 | 3.63 | 4.14 | 3.95 | 4.04 | 2.94 | 2.97 | 2.80 |
| (R3-R4)/(D4m-d3m) | 3.82 | 3.82 | 3.82 | 3.46 | 3.75 | 3.62 | 2.75 | 2.56 | 2.93 |
| EP23/|R5-R4| | 0.05 | 0.05 | 0.05 | 0.08 | 0.07 | 0.07 | 0.07 | 0.07 | 0.07 |
| d5s/EP45+d5m/CP5 | 13.44 | 11.74 | 13.66 | 18.12 | 18.26 | 17.64 | 17.96 | 18.02 | 18.54 |
TABLE 17
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but also covers other technical solutions which may be formed by any combination of the features described above or their equivalents without departing from the inventive concept. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (30)
1. An optical imaging lens, comprising:
a lens group including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged in order from an object side to an image side along an optical axis;
a spacer element group including a third spacer element disposed on an image side of the third lens, a fourth spacer element disposed on an image side of the fourth lens, and a fifth spacer element disposed on an image side of the fifth lens; and
A lens barrel in which the lens group and the spacing element group are accommodated;
wherein a center thickness CT4 of the fourth lens on an optical axis, a spacing EP34 of the third spacing element and the fourth spacing element along the optical axis, an inner diameter D5s of an object side surface of the fifth spacing element, an outer diameter D5s of the object side surface of the fifth spacing element, and an effective focal length f5 of the fifth lens satisfy:
1.2< CT4/EP34<1.7, and
|(D5s-d5s)/f5|≤0.3。
2. the optical imaging lens of claim 1, wherein an effective focal length f4 of the fourth lens, a radius of curvature R4 of an image side surface of the second lens, an inner diameter D4s of an object side surface of the fourth spacer element, and an outer diameter D4s of the object side surface of the fourth spacer element satisfy:
1.0<f4/D4s+|R4/d4s|<4.0。
3. the optical imaging lens according to claim 1, wherein the spacer element group further includes a second spacer element disposed on an image side of the second lens, a radius of curvature R3 of an object side surface of the second lens, a center thickness CT2 of the second lens on an optical axis, an inner diameter d2s of the object side surface of the second spacer element, and an inner diameter d2m of the image side surface of the second spacer element satisfy:
3.5<R3/d2s+d2m/CT2<4.5。
4. The optical imaging lens according to claim 1, wherein an effective focal length f1 of the first lens, an outer diameter D0s of an object side end surface of the lens barrel, and an inner diameter D0s of the object side end surface of the lens barrel satisfy:
-10<f1/(D0s-d0s)<-2.0。
5. the optical imaging lens of claim 1, wherein an effective focal length f1 of the first lens, a radius of curvature R1 of an object side of the first lens, a radius of curvature R7 of an object side of the fourth lens, and an outer diameter D3s of an object side of the third spacer element satisfy:
4<f1/R1+R7/D3s<6.5。
6. the optical imaging lens of claim 1, wherein a radius of curvature R5 of an object-side surface of the third lens, a radius of curvature R7 of an object-side surface of the fourth lens, an inner diameter d3s of an object-side surface of the third spacer element, and an inner diameter d4m of an image-side surface of the fourth spacer element satisfy:
2.5<|R5+R7|/(d3s+d4m)<4.5。
7. the optical imaging lens of claim 1, wherein a radius of curvature R3 of an object side surface of the second lens, a radius of curvature R4 of an image side surface of the second lens, an outer diameter D4m of an image side surface of the fourth spacer element, and an inner diameter D3m of an image side surface of the third spacer element satisfy:
2.0<(R3-R4)/(D4m-d3m)<4.0。
8. the optical imaging lens according to claim 1, wherein the spacer element group further includes a second spacer element disposed on an image side of the second lens, a spacing EP23 of the second spacer element and the third spacer element along the optical axis, a radius of curvature R4 of the image side of the second lens, and a radius of curvature R5 of the object side of the third lens satisfy:
EP23/|R5-R4|<0.1。
9. The optical imaging lens according to claim 1, wherein an inner diameter d5s of an object side surface of the fifth spacer element, a spacing EP45 of the fourth spacer element and the fifth spacer element along the optical axis, an inner diameter d5m of an image side surface of the fifth spacer element, and a maximum thickness CP5 of the fifth spacer element satisfy:
11<d5s/EP45+d5m/CP5<19。
10. the optical imaging lens of any of claims 1 to 9, wherein the object-side and image-side surfaces of the second lens are both convex.
11. The optical imaging lens of any of claims 1 to 9, wherein the fourth lens element has a convex object-side surface and a convex image-side surface.
12. The optical imaging lens according to any one of claims 1 to 9, wherein a largest one of absolute values of focal lengths of respective lenses of the lens group, |fmax|, an inner diameter d0s of an object-side end surface of the lens barrel, and an inner diameter d0m of an image-side end surface of the lens barrel satisfy:
(d0m-d0s)/|fmax|<0.2。
13. the optical imaging lens according to any one of claims 1 to 9, wherein a minimum of a maximum height L of the lens barrel in the optical axis direction, a sum Σct of center thicknesses of respective lenses of the lens group on the optical axis, and an absolute value of focal lengths of the respective lenses of the lens group, |fmin|, satisfies:
4.0mm<L/∑CT*|fmin|<5.5mm。
14. The optical imaging lens of any of claims 1 to 9, wherein an optical element is disposed between the first lens and the second lens, the optical element being one of a cover glass, a filter assembly, or an autofocus assembly.
15. The optical imaging lens of claim 14, wherein the barrel comprises a first barrel part and a second barrel part, the first lens being housed within the first barrel part, the optical element and the second to sixth lenses being housed within the second barrel part.
16. An optical imaging lens, comprising:
a lens group including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged in order from an object side to an image side along an optical axis;
a spacer element group including a fifth spacer element disposed on an image side of the fifth lens; and
a lens barrel in which the lens group and the spacing element group are accommodated;
wherein an effective focal length f5 of the fifth lens, an outer diameter D0m of an image side end surface of the lens barrel, and an inner diameter D5m of an image side surface of the fifth spacer element satisfy:
0.5<|f5|/(D0m-d5m)<3.0。
17. The optical imaging lens of claim 16, wherein the spacer element group further comprises a fourth spacer element disposed on an image side of the fourth lens, an effective focal length f4 of the fourth lens, a radius of curvature R4 of an image side of the second lens, an inner diameter D4s of an object side of the fourth spacer element, and an outer diameter D4s of the object side of the fourth spacer element satisfy:
1.0<f4/D4s+|R4/d4s|<4.0。
18. the optical imaging lens as claimed in claim 16, wherein the spacer element group further includes a second spacer element disposed on an image side of the second lens, a radius of curvature R3 of an object side surface of the second lens, a center thickness CT2 of the second lens on an optical axis, an inner diameter d2s of the object side surface of the second spacer element, and an inner diameter d2m of the image side surface of the second spacer element satisfy:
3.5<R3/d2s+d2m/CT2<4.5。
19. the optical imaging lens according to claim 16, wherein an effective focal length f1 of the first lens, an outer diameter D0s of an object side end surface of the lens barrel, and an inner diameter D0s of the object side end surface of the lens barrel satisfy:
-10<f1/(D0s-d0s)<-2.0。
20. the optical imaging lens of claim 16, wherein the spacer element group further comprises a third spacer element disposed on an image side of the third lens, an effective focal length f1 of the first lens, a radius of curvature R1 of an object side of the first lens, a radius of curvature R7 of an object side of the fourth lens, and an outer diameter D3s of an object side of the third spacer element satisfy:
4<f1/R1+R7/D3s<6.5。
21. The optical imaging lens of claim 16, wherein the spacer element group further comprises a third spacer element disposed on the image side of the third lens and a fourth spacer element disposed on the image side of the fourth lens, and wherein a radius of curvature R5 of the object side of the third lens, a radius of curvature R7 of the object side of the fourth lens, an inner diameter d3s of the object side of the third spacer element, and an inner diameter d4m of the image side of the fourth spacer element satisfy:
2.5<|R5+R7|/(d3s+d4m)<4.5。
22. the optical imaging lens according to claim 16, wherein the spacer element group further includes a third spacer element disposed on the image side of the third lens and a fourth spacer element disposed on the image side of the fourth lens, a radius of curvature R3 of the object side surface of the second lens, a radius of curvature R4 of the image side surface of the second lens, an outer diameter D4m of the image side surface of the fourth spacer element, and an inner diameter D3m of the image side surface of the third spacer element satisfy:
2.0<(R3-R4)/(D4m-d3m)<4.0。
23. the optical imaging lens according to claim 16, wherein the spacer element group further includes a second spacer element disposed on an image side of the second lens and a third spacer element disposed on an image side of the third lens, a spacing EP23 of the second spacer element and the third spacer element along the optical axis, a radius of curvature R4 of the image side of the second lens, and a radius of curvature R5 of the object side of the third lens satisfy:
EP23/|R5-R4|<0.1。
24. The optical imaging lens according to claim 16, wherein the spacer element group further includes a fourth spacer element disposed on an image side of the fourth lens, an inner diameter d5s of an object side surface of the fifth spacer element, a spacing EP45 of the fourth spacer element and the fifth spacer element along the optical axis, an inner diameter d5m of an image side surface of the fifth spacer element, and a maximum thickness CP5 of the fifth spacer element satisfy:
11<d5s/EP45+d5m/CP5<19。
25. the optical imaging lens of any of claims 16 to 24, wherein the object-side and image-side surfaces of the second lens are convex.
26. The optical imaging lens of any of claims 16 to 24, wherein the fourth lens element has a convex object-side surface and a convex image-side surface.
27. The optical imaging lens according to any one of claims 16 to 24, wherein a largest one of absolute values of focal lengths of respective lenses of the lens group, |fmax|, an inner diameter d0s of an object-side end surface of the lens barrel, and an inner diameter d0m of an image-side end surface of the lens barrel satisfy:
(d0m-d0s)/|fmax|<0.2。
28. the optical imaging lens according to any one of claims 16 to 24, wherein a minimum of a maximum height L of the lens barrel in the optical axis direction, a sum Σct of center thicknesses of respective lenses of the lens group on the optical axis, and an absolute value of focal lengths of the respective lenses of the lens group, |fmin|, satisfies:
4.0mm<L/∑CT*|fmin|<5.5mm。
29. The optical imaging lens of any of claims 16 to 24, wherein an optical element is disposed between the first lens and the second lens, the optical element being one of a cover glass, a filter assembly, or an autofocus assembly.
30. The optical imaging lens of claim 29, wherein the barrel comprises a first barrel part and a second barrel part, the first lens being housed within the first barrel part, the optical element and the second to sixth lenses being housed within the second barrel part.
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