CN117539030A - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

Info

Publication number
CN117539030A
CN117539030A CN202311768114.6A CN202311768114A CN117539030A CN 117539030 A CN117539030 A CN 117539030A CN 202311768114 A CN202311768114 A CN 202311768114A CN 117539030 A CN117539030 A CN 117539030A
Authority
CN
China
Prior art keywords
lens
optical imaging
optical
imaging lens
image
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311768114.6A
Other languages
Chinese (zh)
Inventor
张战飞
黄林
戴付建
赵烈烽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Sunny Optics Co Ltd
Original Assignee
Zhejiang Sunny Optics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Sunny Optics Co Ltd filed Critical Zhejiang Sunny Optics Co Ltd
Priority to CN202311768114.6A priority Critical patent/CN117539030A/en
Priority claimed from CN201910112528.0A external-priority patent/CN109683286B/en
Publication of CN117539030A publication Critical patent/CN117539030A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses

Abstract

The application discloses an optical imaging lens, which sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens with focal power from an object side to an image side along an optical axis. The first lens has positive focal power, and the object side surface of the first lens is a convex surface; the second lens has negative focal power; the image side surface of the fourth lens is a convex surface; the fifth lens has negative focal power, the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a concave surface; the first lens and the second lens are glued to form a glued lens group; any one of the third lens, the fourth lens and the fifth lens has an air space between the adjacent lens; the number of lenses of the optical imaging lens with focal power is five; and the effective focal length f5 of the fifth lens and the total effective focal length f of the optical imaging lens satisfy-0.9 < f5/f < -0.5.

Description

Optical imaging lens
Filing and applying for separate cases
The present application is a divisional application of the Chinese patent application with the application number 201910112528.0, which is filed on 13 days of 2019, 02 and 13 and has the name of an optical imaging lens.
Technical Field
The present application relates to an optical imaging lens, and more particularly, to an optical imaging lens including five lenses.
Background
With the continuous development of optical systems in various fields, higher and higher requirements are being placed on the imaging quality of optical lenses. Meanwhile, a lens mounted on an electronic product such as a mobile phone is required to be miniaturized and have low processing cost. In general, reducing the lens aperture is an effective way to reduce the size of an optical lens, however, the imaging quality of the lens, particularly the detail performance, tends to deteriorate with the reduction of the lens aperture. Therefore, how to balance the relationship between the small-caliber feature and the high-quality imaging is a problem to be solved.
Disclosure of Invention
The present application provides an optical imaging lens that may at least address or partially address at least one of the above-mentioned shortcomings in the prior art.
In one aspect, the present application provides an optical imaging lens including, in order from an object side to an image side along an optical axis, a first lens having optical power, a second lens, a third lens, a fourth lens, and a fifth lens. The first lens may have positive optical power, and an object side surface thereof may be convex; the second lens may have negative optical power; the image side surface of the fourth lens element may be convex; the fifth lens element with negative refractive power may have a convex object-side surface and a concave image-side surface; the first lens and the second lens are glued to form a glued lens group; any one of the third lens, the fourth lens and the fifth lens has an air space between the adjacent lens; the number of lenses of the optical imaging lens with focal power is five; and the effective focal length f5 of the fifth lens and the total effective focal length f of the optical imaging lens satisfy-0.9 < f5/f < -0.5.
In one embodiment, the combined focal length f12 of the first lens and the second lens and the center thickness CT1 of the first lens on the optical axis may satisfy 4 < f12/CT1 < 7.
In one embodiment, the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R8 of the image-side surface of the fourth lens may satisfy-1.2 < R1/R8 < -0.4.
In one embodiment, the radius of curvature R9 of the object-side surface of the fifth lens and the radius of curvature R10 of the image-side surface of the fifth lens may satisfy 0.3 < (R9-R10)/(R9 + R10) < 0.8.
In one embodiment, the full field angle FOV of the optical imaging lens may satisfy 69 ° < FOV < 81 °.
In one embodiment, the maximum effective half-caliber DT11 of the object side surface of the first lens, the maximum effective half-caliber DT12 of the image side surface of the first lens, the maximum effective half-caliber DT21 of the object side surface of the second lens, and the maximum effective half-caliber DT22 of the image side surface of the second lens may satisfy 1 < (dt11+dt12+dt21+dt22)/ImgH < 1.3 with half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens.
In one embodiment, the distances TTL between the object side surface of the first lens element and the imaging plane of the optical imaging lens element on the optical axis may be 0.7 < (dt11+dt12+dt21+dt22)/TTL < 0.9.
In one embodiment, the maximum effective half-caliber DT11 of the object side of the first lens and the maximum effective half-caliber DT22 of the image side of the second lens satisfy 0.5mm (DT 11+DT 22)/2. Ltoreq.0.9 mm.
In one embodiment, the air space T23 on the optical axis of the second lens and the third lens, the air space T34 on the optical axis of the third lens and the fourth lens, the air space T45 on the optical axis of the fourth lens and the fifth lens, the center thickness CT3 on the optical axis of the third lens and the center thickness CT4 on the optical axis of the fourth lens may satisfy 0.4 < (t23+t34+t45)/(CT 3+ct 4) < 1.2.
In one embodiment, the optical imaging lens further includes a diaphragm, and the sum Σct of the distance SL between the diaphragm and the imaging surface of the optical imaging lens on the optical axis and the thicknesses of centers of the first lens to the fifth lens on the optical axis, respectively, may satisfy 0.4 < Σct/SL < 0.8.
In one embodiment, a distance TTL between an object side surface of the first lens and an imaging surface of the optical imaging lens on an optical axis and a half of a diagonal length ImgH of an effective pixel area on the imaging surface of the optical imaging lens may satisfy 1.3.ltoreq.ttl/imgh.ltoreq.1.75.
In one embodiment, the distance SAG41 between the intersection point of the fourth lens object side surface and the optical axis and the effective half-caliber vertex of the fourth lens object side surface on the optical axis, the distance SAG42 between the intersection point of the fourth lens image side surface and the optical axis and the effective half-caliber vertex of the fourth lens image side surface on the optical axis and the central thickness CT4 of the fourth lens on the optical axis can satisfy 0.6 < |SAG41+SAG42|/CT4 < 1.5.
In one embodiment, the distance SAG52 on the optical axis from the intersection of the fifth lens image side surface and the optical axis to the effective half-caliber vertex of the fifth lens image side surface and the distance SAG51 on the optical axis from the intersection of the fifth lens object side surface and the optical axis to the effective half-caliber vertex of the fifth lens object side surface may satisfy 0.1 < |SAG52/SAG51| < 1.
The optical imaging lens has at least one beneficial effect of small caliber, high imaging quality, miniaturization and the like by properly introducing the cemented lens, reasonably distributing the focal power, the surface of each lens, the center thickness of each lens, the axial spacing between each lens and the like.
Drawings
Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application;
fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 1;
fig. 3 shows a schematic structural view of an optical imaging lens according to embodiment 2 of the present application;
Fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 2;
fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 4;
fig. 9 shows a schematic structural view of an optical imaging lens according to embodiment 5 of the present application;
fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 5;
fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application;
fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 6;
fig. 13 shows a schematic structural view of an optical imaging lens according to embodiment 7 of the present application;
Fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 7;
fig. 15 shows a schematic structural view of an optical imaging lens according to embodiment 8 of the present application;
fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of embodiment 8, 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. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, then the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the subject is referred to as the object side of the lens, and the surface of each lens closest to the imaging plane is referred to as the image side of the lens.
It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the 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.
The optical imaging lens according to the exemplary embodiment of the present application may include, for example, five lenses having optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The five lenses are sequentially arranged from the object side to the image side along the optical axis.
In an exemplary embodiment, the first lens may have positive optical power, and its object-side surface may be convex; the second lens may have negative optical power; the third lens has positive optical power or negative optical power; the fourth lens has positive focal power or negative focal power, and the image side surface of the fourth lens can be a convex surface; the fifth lens element may have negative refractive power, wherein the object-side surface thereof may be convex and the image-side surface thereof may be concave. The focal power and the surface shape of the fifth lens are reasonably distributed, so that the aberration of the system can be ensured to be within a reasonable range.
In the optical imaging lens, the first lens and the second lens can be glued to form a glued lens group; the third lens, the fourth lens and the fifth lens may be independent from each other and have an air space between adjacent lenses. By introducing the cemented lens, chromatic aberration of each lens in the cemented lens group is eliminated, partial chromatic aberration can be remained to balance chromatic aberration of the system, and therefore the capacity of balancing chromatic aberration of the lens can be enhanced, and imaging resolution is improved. And the gluing of the lenses omits the air interval between the two lenses, so that the whole structure of the lens is compact, the structure is simple, the optical total length of the lens is shortened, and the miniaturization requirement is met. In addition, the gluing of the lens can reduce tolerance sensitivity problems of the lens unit caused by inclination/eccentric core and the like in the assembling process, and the mass production of the lens can be improved. Meanwhile, the cemented lens has the advantages of small light energy loss and high transverse and axial resolution.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression (dt11+dt22)/2+.0.9 mm, where DT11 is the maximum effective half-caliber of the object side surface of the first lens and DT22 is the maximum effective half-caliber of the image side surface of the second lens. More specifically, DT11 and DT22 may further satisfy 0.5 mm.ltoreq.12DT 22/2.ltoreq.0.9 mm, e.g., 0.80 mm.ltoreq.12DT 22/2.ltoreq.0.90 mm. The maximum effective half caliber of the object side surface of the first lens and the maximum effective half caliber of the image side surface of the second lens are reasonably controlled, and the miniaturization of the system is facilitated.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 4 < f12/CT1 < 7, where f12 is a combined focal length of the first lens and the second lens, and CT1 is a center thickness of the first lens on the optical axis. More specifically, f12 and CT1 may further satisfy 4.66.ltoreq.f12/CT 1.ltoreq.6.39. Satisfies the condition that f12/CT1 is less than 7, can effectively reduce the chromatic aberration of the optical imaging lens, and avoids the overlarge spherical aberration and coma aberration of the system.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-0.9 < f5/f < -0.5, where f5 is an effective focal length of the fifth lens and f is a total effective focal length of the optical imaging lens. More specifically, f5 and f may further satisfy-0.87.ltoreq.f5/f.ltoreq.0.68. Satisfies the condition that f5/f is less than-0.9 and less than-0.5, can avoid overlarge light deflection, simultaneously adjusts the light focusing position, improves the light converging capability of the system, and shortens the total length of the optical imaging lens.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition of-1.2 < R1/R8 < -0.4, where R1 is a radius of curvature of an object side surface of the first lens element and R8 is a radius of curvature of an image side surface of the fourth lens element. More specifically, R1 and R8 may further satisfy-1.19.ltoreq.R1/R8.ltoreq.0.50. The curvature radius of the object side surface of the first lens and the curvature radius of the image side surface of the fourth lens are reasonably controlled, so that the processing difficulty can be effectively reduced, and meanwhile, the chromatic aberration balance capacity and the distortion balance capacity of the optical imaging lens can be improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.3 < (R9-R10)/(r9+r10) < 0.8, where R9 is the radius of curvature of the object side surface of the fifth lens element and R10 is the radius of curvature of the image side surface of the fifth lens element. More specifically, R9 and R10 may further satisfy 0.47.ltoreq.R 9-R10)/(R9+R10). Ltoreq.0.66. The curvature radius of the object side surface and the image side surface of the fifth lens is reasonably controlled, the fifth lens can be effectively prevented from being excessively bent, the processing difficulty is reduced, meanwhile, astigmatism and coma between the fifth lens and the front end lens can be reduced, and the imaging quality of the system is improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional 69 ° < FOV < 81 °, where FOV is the full field angle of the optical imaging lens. More specifically, the FOV may further satisfy 69.9.ltoreq.FOV.ltoreq.80.8. The full field angle of the optical imaging lens is controlled in a reasonable range, so that the optical imaging lens has good aberration balance capability while meeting the small-size characteristic, the deflection angle of the main light can be reasonably adjusted, and the matching degree with a chip is improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.4 < (t23+t34+t45)/(CT 3+ct4) < 1.2, where T23 is an air space on the optical axis of the second lens and the third lens, T34 is an air space on the optical axis of the third lens and the fourth lens, T45 is an air space on the optical axis of the fourth lens and the fifth lens, CT3 is a center thickness on the optical axis of the third lens, and CT4 is a center thickness on the optical axis of the fourth lens. More specifically, T23, T34, T45, CT3 and CT4 may further satisfy 0.43.ltoreq.T23+T34+T45)/(C3+C4). Ltoreq.1.16. The air interval between the lenses and the center thickness of the air interval on the optical axis are reasonably distributed, so that the processing and assembling difficulty of the lenses can be reduced, and meanwhile, the sufficient interval space between the lenses can be ensured, and the astigmatism and field curvature correcting capacity of the optical imaging lens can be improved.
In an exemplary embodiment, the optical imaging lens may further include a diaphragm to improve imaging quality of the lens. Alternatively, a diaphragm may be provided between the object side and the first lens.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.4 < Σct/SL < 0.8, where Σct is the sum of the thicknesses of the centers of the first lens to the fifth lens on the optical axis, respectively, and SL is the distance of the stop to the imaging surface of the optical imaging lens on the optical axis. More specifically, sigma CT and SL may further satisfy 0.57 Sigma CT/SL 0.72. Meets the condition that the ratio of sigma CT/SL is less than 0.4 and less than 0.8, can better balance the chromatic aberration of the system, control the distortion of the lens, and is also beneficial to adjusting the total length of the system and controlling the size of the lens.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition 1 < (dt11+dt12+dt21+dt22)/ImgH < 1.3, where DT11 is the maximum effective half-caliber of the object side surface of the first lens, DT12 is the maximum effective half-caliber of the image side surface of the first lens, DT21 is the maximum effective half-caliber of the object side surface of the second lens, DT22 is the maximum effective half-caliber of the image side surface of the second lens, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens. More specifically, DT11, DT12, DT21, DT22 and ImgH may further satisfy 1.09.ltoreq. (DT 11+DT12+DT21+DT 22)/ImgH.ltoreq.1.26. The relative sizes of DT11, DT12, DT21, DT22 and ImgH are reasonably adjusted, so that the total size of the optical imaging lens can be effectively reduced, and the miniaturization of the system is facilitated, thereby better meeting the miniaturization size requirements of more and more portable electronic products in the market.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition that (dt11+dt12+dt21+dt22)/TTL < 0.9, where DT11 is the maximum effective half-caliber of the object side surface of the first lens, DT12 is the maximum effective half-caliber of the image side surface of the first lens, DT21 is the maximum effective half-caliber of the object side surface of the second lens, DT22 is the maximum effective half-caliber of the image side surface of the second lens, and TTL is the distance between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis. More specifically, DT11, DT12, DT21, DT22 and TTL may further satisfy 0.72.ltoreq. (DT 11+DT12+DT21+DT 22)/TTL.ltoreq.0.80. The relationship among DT11, DT12, DT21, DT22 and TTL is reasonably controlled, which is beneficial to reducing the system size, the processing difficulty and the processing cost, and simultaneously, the off-axis aberration can be effectively improved by controlling the maximum effective half caliber of the lens.
In an exemplary embodiment, the optical imaging lens can satisfy the condition that TTL/ImgH is less than or equal to 1.75, where TTL is a distance between an object side surface of the first lens and an imaging surface of the optical imaging lens on an optical axis, and ImgH is a half of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens. More specifically, TTL and ImgH can further satisfy 1.3.ltoreq.TTL/ImgH.ltoreq.1.75, e.g., 1.41.ltoreq.TTL/ImgH.ltoreq.1.71. The total length and the image height of the system are ensured to be in a reasonable range, the image height can be effectively prevented from being too small, and the miniaturization of the system is facilitated.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition that 0.6 < |sag41+sag42|/CT4 < 1.5, where SAG41 is a distance on the optical axis between an intersection point of the object side surface of the fourth lens and the optical axis and an effective half-caliber vertex of the object side surface of the fourth lens, SAG42 is a distance on the optical axis between an intersection point of the image side surface of the fourth lens and the optical axis and an effective half-caliber vertex of the image side surface of the fourth lens, and CT4 is a center thickness of the fourth lens on the optical axis. More specifically, SAG41, SAG42 and CT4 may further satisfy 0.66.ltoreq.ISAG41+SAG42.ltoreq.Ct4.ltoreq.1.40. SAG41, SAG42 and CT4 are reasonably controlled, so that the angle of the principal ray of the optical imaging lens is adjusted, the relative brightness of the optical imaging lens can be effectively improved, and the definition of an imaging surface is improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.1 < |sag52/SAG51| < 1, where SAG52 is a distance on the optical axis from an intersection point of the image side surface of the fifth lens and the optical axis to an effective half-caliber vertex of the image side surface of the fifth lens, and SAG51 is a distance on the optical axis from an intersection point of the object side surface of the fifth lens and the optical axis to an effective half-caliber vertex of the object side surface of the fifth lens. More specifically, SAG52 and SAG51 further satisfy 0.15.ltoreq.SAG 52/SAG 51.ltoreq.0.99. By reasonably controlling SAG52 and SAG51, the fifth lens has better processing manufacturability, and meanwhile, the imaging quality of the lens can be improved, and the sensitivity of the lens can be improved.
Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on the imaging surface.
The optical imaging lens according to the above-described embodiments of the present application may employ a plurality of lenses, for example, five lenses as described above. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like, the volume of the lens can be effectively reduced, the sensitivity of the lens can be reduced, and the processability of the lens can be improved, so that the optical imaging lens is more beneficial to production and processing and is applicable to portable electronic products. Meanwhile, the optical imaging lens with the configuration has the beneficial effects of small caliber, high imaging quality, miniaturization and the like.
In an embodiment of the present application, at least one of the mirrors of each lens is an aspherical mirror, i.e., at least one of the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens is an aspherical mirror. The aspherical lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens and the fifth lens are aspherical mirror surfaces.
However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens may be varied to achieve the various results and advantages described in the specification without departing from the technical solutions claimed herein. For example, although the description has been made by taking five lenses as an example in the embodiment, the optical imaging lens is not limited to include five lenses. The optical imaging lens may also include other numbers of lenses, if desired.
Specific examples of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6 and imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has 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 filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In the present embodiment, the image side surface S2 of the first lens element E1 is glued to the object side surface S3 of the second lens element E2 to form a cemented lens assembly; any one of the third lens E3, the fourth lens E4 and the fifth lens E5 is independent from the adjacent lens with an air space therebetween.
Table 1 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 1, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 1
As can be seen from table 1, the object side surface and the image side surface of any one of the first lens element E1 to the fifth lens element E5 are aspheric. In the present embodiment, the surface shape x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is the conic coefficient (given in table 1); ai is the correction coefficient of the aspherical i-th order. Table 2 below shows the higher order coefficients A that can be used for each of the aspherical mirrors S1-S10 in example 1 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 。
TABLE 2
Table 3 gives the effective focal lengths f1 to f5 of the respective lenses of the optical imaging lens in embodiment 1, the total effective focal length f, the total optical length TTL (i.e., the distance on the optical axis from the object side surface S1 to the imaging surface S13 of the first lens E1), and half the diagonal length ImgH of the effective pixel region on the imaging surface S13 of the optical imaging lens.
f1(mm) 2.66 f5(mm) -2.84
f2(mm) -5.48 f(mm) 3.25
f3(mm) -32.91 TTL(mm) 4.06
f4(mm) 3.14 ImgH(mm) 2.81
TABLE 3 Table 3
The optical imaging lens in embodiment 1 satisfies the following relationship:
(dt11+dt22)/2=0.82 mm, wherein DT11 is the maximum effective half-caliber of the object side surface S1 of the first lens element E1, and DT22 is the maximum effective half-caliber of the image side surface S4 of the second lens element E2;
f12/CT1 = 6.39, where f12 is the combined focal length of the first lens E1 and the second lens E2, CT1 is the center thickness of the first lens E1 on the optical axis;
f5/f= -0.87, wherein f5 is the effective focal length of the fifth lens E5, and f is the total effective focal length of the optical imaging lens;
r1/r8= -0.71, wherein R1 is a radius of curvature of the object side surface S1 of the first lens element E1, and R8 is a radius of curvature of the image side surface S8 of the fourth lens element E4;
(R9-R10)/(r9+r10) =0.49, wherein R9 is the radius of curvature of the object-side surface S9 of the fifth lens element E5, and R10 is the radius of curvature of the image-side surface S10 of the fifth lens element E5;
FOV = 80.6 °, wherein FOV is the full field angle of the optical imaging lens;
(t23+t34+t45)/(CT 3+ct 4) =1.06, wherein T23 is the air space on the optical axis of the second lens E2 and the third lens E3, T34 is the air space on the optical axis of the third lens E3 and the fourth lens E4, T45 is the air space on the optical axis of the fourth lens E4 and the fifth lens E5, CT3 is the center thickness on the optical axis of the third lens E3, and CT4 is the center thickness on the optical axis of the fourth lens E4;
Σct/sl=0.58, where Σct is the sum of the thicknesses of the centers of the first lens element E1 to the fifth lens element E5 on the optical axis, respectively, and SL is the distance between the stop STO and the imaging surface S13 of the optical imaging lens on the optical axis;
(dt11+dt12+dt21+dt22)/imgh=1.16, wherein DT11 is the maximum effective half-caliber of the object side surface S1 of the first lens element E1, DT12 is the maximum effective half-caliber of the image side surface S2 of the first lens element E1, DT21 is the maximum effective half-caliber of the object side surface S3 of the second lens element E2, DT22 is the maximum effective half-caliber of the image side surface S4 of the second lens element E2, and ImgH is half of the diagonal length of the effective pixel region on the imaging surface S13 of the optical imaging lens;
(dt11+dt12+dt21+dt22)/ttl=0.80, wherein DT11 is the maximum effective half-caliber of the object side surface S1 of the first lens element E1, DT12 is the maximum effective half-caliber of the image side surface S2 of the first lens element E1, DT21 is the maximum effective half-caliber of the object side surface S3 of the second lens element E2, DT22 is the maximum effective half-caliber of the image side surface S4 of the second lens element E2, TTL is the distance between the object side surface S1 of the first lens element E1 and the imaging surface S13 of the optical imaging lens on the optical axis;
TTL/imgh=1.44, where TTL is the distance between the object side surface S1 of the first lens E1 and the imaging surface S13 of the optical imaging lens on the optical axis, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface S13 of the optical imaging lens;
SAG41+sag42|/CT4 = 1.15, where SAG41 is the distance on the optical axis between the intersection of the object side S7 of the fourth lens E4 and the optical axis and the effective half-caliber vertex of the object side S7 of the fourth lens E4, SAG42 is the distance on the optical axis between the intersection of the image side S8 of the fourth lens E4 and the optical axis and the effective half-caliber vertex of the image side S8 of the fourth lens E4, CT4 is the center thickness of the fourth lens E4 on the optical axis;
SAG52/SAG 51|=0.65, wherein SAG52 is the distance on the optical axis between the intersection point of the image side surface S10 of the fifth lens E5 and the optical axis and the effective half-caliber vertex of the image side surface S10 of the fifth lens E5, and SAG51 is the distance on the optical axis between the intersection point of the object side surface S9 of the fifth lens E5 and the optical axis and the effective half-caliber vertex of the object side surface S9 of the fifth lens E5.
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 2B shows an astigmatism curve of the optical imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different image heights. Fig. 2D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the optical imaging lens provided in embodiment 1 can achieve good imaging quality.
Example 2
An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for 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 according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6 and imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has 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 filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In the present embodiment, the image side surface S2 of the first lens element E1 is glued to the object side surface S3 of the second lens element E2 to form a cemented lens assembly; any one of the third lens E3, the fourth lens E4 and the fifth lens E5 is independent from the adjacent lens with an air space therebetween.
Table 4 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 2, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 4 Table 4
As can be seen from table 4, in embodiment 2, the object side surface and the image side surface of any one of the first lens element E1 to the fifth lens element E5 are aspherical surfaces. Table 5 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -9.4700E-03 5.8376E-01 -5.4639E+00 2.7977E+01 -8.5115E+01 1.5852E+02 -1.7713E+02 1.0895E+02 -2.8328E+01
S2 -8.7690E+00 1.5308E+02 -1.3962E+03 7.5866E+03 -2.5775E+04 5.5004E+04 -7.1396E+04 5.1415E+04 -1.5740E+04
S3 -1.8125E+00 2.9443E+01 -2.6821E+02 1.4567E+03 -4.9450E+03 1.0548E+04 -1.3702E+04 9.8890E+03 -3.0388E+03
S4 -4.2200E-02 4.2585E-01 -3.0964E+00 1.2678E+01 -3.1063E+01 4.6183E+01 -4.0694E+01 1.9531E+01 -3.9328E+00
S5 -3.6957E-01 1.6478E+00 -1.0685E+01 4.5843E+01 -1.3189E+02 2.5011E+02 -3.0098E+02 2.0831E+02 -6.2785E+01
S6 -2.3193E-01 -2.8041E-01 2.4242E+00 -9.8098E+00 2.2648E+01 -3.1186E+01 2.4959E+01 -1.0471E+01 1.7563E+00
S7 -2.6020E-02 -1.5820E-01 4.1701E-01 -1.0854E+00 1.7271E+00 -1.6052E+00 8.4908E-01 -2.3446E-01 2.6072E-02
S8 -9.6530E-02 4.8010E-01 -1.0828E+00 1.3933E+00 -1.0798E+00 5.2262E-01 -1.5627E-01 2.6590E-02 -1.9800E-03
S9 -5.7168E-01 5.9281E-01 -5.0581E-01 3.4666E-01 -1.6050E-01 4.7192E-02 -8.4700E-03 8.4900E-04 -3.6000E-05
S10 -2.6043E-01 2.3462E-01 -1.5339E-01 6.9609E-02 -2.2030E-02 4.7270E-03 -6.5000E-04 5.1600E-05 -1.8000E-06
TABLE 5
Table 6 shows effective focal lengths f1 to f5 of the respective lenses of the optical imaging lens in embodiment 2, a total effective focal length f, an optical total length TTL, and a half of the diagonal length ImgH of the effective pixel region on the imaging surface S13 of the optical imaging lens.
f1(mm) 2.74 f5(mm) -2.70
f2(mm) -5.59 f(mm) 3.42
f3(mm) 495.93 TTL(mm) 4.13
f4(mm) 3.48 ImgH(mm) 2.81
TABLE 6
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 4B shows an astigmatism curve of the optical imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different image heights. Fig. 4D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the optical imaging lens provided in embodiment 2 can achieve good imaging quality.
Example 3
An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. 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 according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6 and imaging surface S12.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S2 thereof is concave, and an image-side surface S3 thereof is concave. In the present embodiment, the image side surface S2 of the first lens element E1 and the object side surface S2 of the second lens element E2 are substantially completely overlapped, and the two lens elements are bonded together to form a cemented lens assembly.
The third lens element E3 has positive refractive power, wherein an object-side surface S4 thereof is convex, and an image-side surface S5 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S6 thereof is concave and an image-side surface S7 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S8 thereof is convex, and an image-side surface S9 thereof is concave. In the present embodiment, any one of the third lens E3, the fourth lens E4, and the fifth lens E5 and the adjacent lens are independent from each other with an air space therebetween.
The filter E6 has an object side surface S10 and an image side surface S11. Light from the object sequentially passes through the respective surfaces S1 to S11 and is finally imaged on the imaging surface S12.
Table 7 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 3, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 7
As can be seen from table 7, in embodiment 3, the object side surface and the image side surface of any one of the first lens element E1 to the fifth lens element E5 are aspherical surfaces. Table 8 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 8
Table 9 gives the effective focal lengths f1 to f5 of the respective lenses of the optical imaging lens in embodiment 3, the total effective focal length f, the total optical length TTL, and half the diagonal length ImgH of the effective pixel region on the imaging surface S12 of the optical imaging lens.
f1(mm) 2.93 f5(mm) -3.03
f2(mm) -5.88 f(mm) 4.01
f3(mm) 5.00 TTL(mm) 4.82
f4(mm) -400.18 ImgH(mm) 2.81
TABLE 9
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the optical imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different image heights. Fig. 6D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the optical imaging lens provided in embodiment 3 can achieve good imaging quality.
Example 4
An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. 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 according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6 and imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave, 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 filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In the present embodiment, the image side surface S2 of the first lens element E1 is glued to the object side surface S3 of the second lens element E2 to form a cemented lens assembly; any one of the third lens E3, the fourth lens E4 and the fifth lens E5 is independent from the adjacent lens with an air space therebetween.
Table 10 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 4, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
/>
Table 10
As can be seen from table 10, in example 4, the object side surface and the image side surface of any one of the first lens element E1 to the fifth lens element E5 are aspherical surfaces. Table 11 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -3.7803E-03 7.0166E-02 -3.8004E-01 1.3251E+00 -2.7467E+00 3.4189E+00 -2.4580E+00 9.3142E-01 -1.4347E-01
S2 -1.5717E+00 2.6064E+01 -2.3025E+02 1.2050E+03 -3.7533E+03 6.9871E+03 -7.6160E+03 4.4839E+03 -1.1011E+03
S3 -2.0760E-01 2.6324E+00 -2.7627E+01 1.5788E+02 -5.1689E+02 9.8493E+02 -1.0789E+03 6.2995E+02 -1.5185E+02
S4 -5.8978E-02 3.6748E-01 -2.8605E+00 1.3696E+01 -4.1895E+01 7.9007E+01 -8.9407E+01 5.5807E+01 -1.4706E+01
S5 -3.6471E-01 1.6848E+00 -1.2939E+01 6.3127E+01 -2.0002E+02 4.0379E+02 -5.0361E+02 3.5372E+02 -1.0651E+02
S6 -3.6066E-01 1.0515E+00 -5.0082E+00 1.6053E+01 -3.4440E+01 4.8235E+01 -4.2364E+01 2.1214E+01 -4.5798E+00
S7 -5.5156E-02 -1.0811E-01 5.1879E-01 -1.3989E+00 2.1059E+00 -1.9115E+00 1.0195E+00 -2.8939E-01 3.3469E-02
S8 -4.3617E-02 1.1180E-01 -1.3485E-01 1.3233E-01 -9.7540E-02 5.2348E-02 -1.8870E-02 3.9540E-03 -3.6000E-04
S9 -5.7929E-01 5.7063E-01 -4.6273E-01 3.1509E-01 -1.4814E-01 4.4498E-02 -8.1700E-03 8.3900E-04 -3.7000E-05
S10 -2.4920E-01 2.2679E-01 -1.5207E-01 6.9445E-02 -2.1280E-02 4.2570E-03 -5.3000E-04 3.7900E-05 -1.2000E-06
TABLE 11
Table 12 shows effective focal lengths f1 to f5 of the respective lenses of the optical imaging lens in embodiment 4, a total effective focal length f, an optical total length TTL, and a half of the diagonal length ImgH of the effective pixel region on the imaging surface S13 of the optical imaging lens.
f1(mm) 2.70 f5(mm) -2.66
f2(mm) -5.96 f(mm) 3.35
f3(mm) -26.75 TTL(mm) 4.19
f4(mm) 3.13 ImgH(mm) 2.81
Table 12
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve of the optical imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different image heights. Fig. 8D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the optical imaging lens provided in embodiment 4 can achieve good imaging quality.
Example 5
An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. 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, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6 and imaging surface S12.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S2 thereof is concave, and an image-side surface S3 thereof is convex. In the present embodiment, the image side surface S2 of the first lens element E1 and the object side surface S2 of the second lens element E2 are substantially completely overlapped, and the two lens elements are bonded together to form a cemented lens assembly.
The third lens element E3 has negative refractive power, wherein an object-side surface S4 thereof is concave, and an image-side surface S5 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S6 thereof is convex, and an image-side surface S7 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S8 thereof is convex, and an image-side surface S9 thereof is concave. In the present embodiment, any one of the third lens E3, the fourth lens E4, and the fifth lens E5 and the adjacent lens are independent from each other with an air space therebetween.
The filter E6 has an object side surface S10 and an image side surface S11. Light from the object sequentially passes through the respective surfaces S1 to S11 and is finally imaged on the imaging surface S12.
Table 13 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 5, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 13
As can be seen from table 13, in example 5, the object side surface and the image side surface of any one of the first lens element E1 to the fifth lens element E5 are aspherical surfaces. Table 14 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 14
Table 15 shows effective focal lengths f1 to f5 of the respective lenses of the optical imaging lens in embodiment 5, a total effective focal length f, an optical total length TTL, and a half of the diagonal length ImgH of the effective pixel region on the imaging surface S12 of the optical imaging lens.
f1(mm) 2.86 f5(mm) -2.37
f2(mm) -8.06 f(mm) 3.36
f3(mm) -13.94 TTL(mm) 4.56
f4(mm) 2.63 ImgH(mm) 2.81
TABLE 15
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve of the optical imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different image heights. Fig. 10D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens provided in 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 12D. Fig. 11 shows a schematic structural diagram of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6 and imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave and an image-side surface S6 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In the present embodiment, the image side surface S2 of the first lens element E1 is glued to the object side surface S3 of the second lens element E2 to form a cemented lens assembly; any one of the third lens E3, the fourth lens E4 and the fifth lens E5 is independent from the adjacent lens with an air space therebetween.
Table 16 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 6, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
/>
Table 16
As can be seen from table 16, in example 6, the object side surface and the image side surface of any one of the first lens element E1 to the fifth lens element E5 are aspherical surfaces. Table 17 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 6, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 1.0221E-02 7.8101E-02 -5.8740E-01 3.0289E+00 -9.2911E+00 1.7619E+01 -2.0135E+01 1.2717E+01 -3.4060E+00
S2 -6.8858E+00 1.2520E+02 -1.1986E+03 6.8284E+03 -2.3944E+04 5.1910E+04 -6.7648E+04 4.8500E+04 -1.4689E+04
S3 -1.2943E+00 2.0848E+01 -1.9859E+02 1.1309E+03 -3.9645E+03 8.5899E+03 -1.1180E+04 8.0016E+03 -2.4187E+03
S4 -5.9275E-02 3.2041E-01 -3.1915E+00 1.9176E+01 -7.0076E+01 1.5695E+02 -2.0979E+02 1.5429E+02 -4.7825E+01
S5 -1.8490E-01 8.7269E-02 -1.1249E+00 5.6531E+00 -2.0290E+01 4.6822E+01 -6.7538E+01 5.6112E+01 -1.9783E+01
S6 -1.6318E-01 5.7158E-02 -6.3482E-01 2.6692E+00 -7.4425E+00 1.3065E+01 -1.3865E+01 8.2179E+00 -2.0431E+00
S7 -5.1970E-02 -2.2982E-02 -7.9550E-02 1.6325E-01 -2.0916E-01 1.0840E-01 7.9790E-03 -2.0770E-02 4.0960E-03
S8 -2.8311E-02 8.3616E-02 -1.4660E-01 1.8176E-01 -1.5732E-01 9.2615E-02 -3.3930E-02 6.8320E-03 -5.7000E-04
S9 -5.7049E-01 6.0787E-01 -5.1819E-01 3.4602E-01 -1.5619E-01 4.5037E-02 -7.9700E-03 7.9000E-04 -3.4000E-05
S10 -2.4061E-01 2.2746E-01 -1.6047E-01 7.7672E-02 -2.5280E-02 5.4330E-03 -7.4000E-04 5.7700E-05 -2.0000E-06
TABLE 17
Table 18 shows effective focal lengths f1 to f5 of the respective lenses of the optical imaging lens in embodiment 6, a total effective focal length f, an optical total length TTL, and a half of the diagonal length ImgH of the effective pixel region on the imaging surface S13 of the optical imaging lens.
f1(mm) 2.58 f5(mm) -2.58
f2(mm) -5.16 f(mm) 3.67
f3(mm) -679.98 TTL(mm) 4.39
f4(mm) 3.87 ImgH(mm) 2.81
TABLE 18
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve of the optical imaging lens of embodiment 6, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different image heights. Fig. 12D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens provided in 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 14D. Fig. 13 shows a schematic structural diagram of an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6 and imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. 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 filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In the present embodiment, the image side surface S2 of the first lens element E1 is glued to the object side surface S3 of the second lens element E2 to form a cemented lens assembly; any one of the third lens E3, the fourth lens E4 and the fifth lens E5 is independent from the adjacent lens with an air space therebetween.
Table 19 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 7, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 19
As can be seen from table 19, in example 7, the object side surface and the image side surface of any one of the first lens element E1 to the fifth lens element E5 are aspherical surfaces. Table 20 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 7, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
/>
Table 20
Table 21 shows effective focal lengths f1 to f5 of the respective lenses of the optical imaging lens in embodiment 7, a total effective focal length f, an optical total length TTL, and a half of the diagonal length ImgH of the effective pixel region on the imaging surface S13 of the optical imaging lens.
f1(mm) 2.57 f5(mm) -2.62
f2(mm) -4.91 f(mm) 3.24
f3(mm) 351.46 TTL(mm) 3.98
f4(mm) 3.37 ImgH(mm) 2.81
Table 21
Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve of the optical imaging lens of embodiment 7, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 14C shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different image heights. Fig. 14D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 14A to 14D, the optical imaging lens provided in embodiment 7 can achieve good imaging quality.
Example 8
An optical imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16D. Fig. 15 shows a schematic structural diagram of an optical imaging lens according to embodiment 8 of the present application.
As shown in fig. 15, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6 and imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In the present embodiment, the image side surface S2 of the first lens element E1 is glued to the object side surface S3 of the second lens element E2 to form a cemented lens assembly; any one of the third lens E3, the fourth lens E4 and the fifth lens E5 is independent from the adjacent lens with an air space therebetween.
Table 22 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 8, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
/>
Table 22
As can be seen from table 22, in example 8, the object side surface and the image side surface of any one of the first lens element E1 to the fifth lens element E5 are aspherical surfaces. Table 23 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 8, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 7.5010E-03 9.3693E-02 -7.0815E-01 3.4456E+00 -1.0062E+01 1.8182E+01 -1.9824E+01 1.1961E+01 -3.0685E+00
S2 -6.8246E+00 1.1087E+02 -9.5575E+02 4.9647E+03 -1.6038E+04 3.2234E+04 -3.9065E+04 2.6080E+04 -7.3570E+03
S3 -1.2825E+00 1.8711E+01 -1.6059E+02 8.3343E+02 -2.6910E+03 5.4034E+03 -6.5388E+03 4.3579E+03 -1.2273E+03
S4 -6.5880E-02 4.8435E-01 -4.2072E+00 2.2224E+01 -7.3780E+01 1.5311E+02 -1.9311E+02 1.3568E+02 -4.0648E+01
S5 -2.8744E-01 1.5434E+00 -1.3569E+01 6.9708E+01 -2.2703E+02 4.6557E+02 -5.8463E+02 4.0996E+02 -1.2223E+02
S6 -2.1641E-01 6.2884E-01 -4.0195E+00 1.5076E+01 -3.6478E+01 5.6196E+01 -5.3315E+01 2.8415E+01 -6.4440E+00
S7 -2.8430E-02 -1.0046E-01 2.5195E-01 -6.4392E-01 1.0589E+00 -1.1361E+00 7.2134E-01 -2.3711E-01 3.0801E-02
S8 -3.0970E-02 1.0001E-01 -1.8401E-01 2.3918E-01 -1.9909E-01 1.0618E-01 -3.4800E-02 6.3270E-03 -4.9000E-04
S9 -5.9128E-01 6.0348E-01 -4.9224E-01 3.2497E-01 -1.4658E-01 4.2136E-02 -7.3900E-03 7.2400E-04 -3.0000E-05
S10 -2.5167E-01 2.3951E-01 -1.6740E-01 8.0340E-02 -2.6020E-02 5.5700E-03 -7.5000E-04 5.8300E-05 -2.0000E-06
Table 23
Table 24 shows effective focal lengths f1 to f5 of the respective lenses of the optical imaging lens in embodiment 8, a total effective focal length f, an optical total length TTL, and a half of the diagonal length ImgH of the effective pixel region on the imaging surface S13 of the optical imaging lens.
f1(mm) 2.64 f5(mm) -2.44
f2(mm) -5.27 f(mm) 3.57
f3(mm) 370.86 TTL(mm) 4.37
f4(mm) 3.35 ImgH(mm) 2.81
Table 24
Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 8, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve of the optical imaging lens of embodiment 8, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 16C shows a distortion curve of the optical imaging lens of embodiment 8, which represents distortion magnitude values corresponding to different image heights. Fig. 16D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 8, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 16A to 16D, the optical imaging lens provided in embodiment 8 can achieve good imaging quality.
In summary, examples 1 to 8 each satisfy the relationship shown in table 25.
Table 25
The present application also provides an image pickup apparatus, in which the electron photosensitive element may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device may be a stand-alone imaging apparatus such as a digital camera, or may be an imaging module integrated on a mobile electronic apparatus such as a cellular phone. The image pickup apparatus is equipped with the optical imaging lens described above.
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 it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. 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 (10)

1. The optical imaging lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens with focal power from an object side to an image side along an optical axis, and is characterized in that,
The first lens has positive focal power, and the object side surface of the first lens is a convex surface;
the second lens has negative optical power;
the image side surface of the fourth lens is a convex surface;
the fifth lens has negative focal power, the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a concave surface;
the first lens and the second lens are glued to form a glued lens group;
any one of the third lens, the fourth lens and the fifth lens has an air space between the adjacent lens;
the number of lenses of the optical imaging lens with focal power is five; and
the effective focal length f5 of the fifth lens and the total effective focal length f of the optical imaging lens meet-0.9 < f5/f < -0.5.
2. The optical imaging lens according to claim 1, wherein a combined focal length f12 of the first lens and the second lens and a center thickness CT1 of the first lens on the optical axis satisfy 4 < f12/CT1 < 7.
3. The optical imaging lens as claimed in claim 1, wherein a radius of curvature R1 of an object side surface of the first lens and a radius of curvature R8 of an image side surface of the fourth lens satisfy-1.2 < R1/R8 < -0.4.
4. The optical imaging lens as claimed in claim 1, wherein a radius of curvature R9 of an object side surface of the fifth lens and a radius of curvature R10 of an image side surface of the fifth lens satisfy 0.3 < (R9-R10)/(r9+r10) < 0.8.
5. The optical imaging lens of claim 1, wherein the full field angle FOV of the optical imaging lens satisfies 69 ° < FOV < 81 °.
6. The optical imaging lens as claimed in claim 1, wherein a half of a diagonal length between a maximum effective half-caliber DT11 of an object side surface of the first lens, a maximum effective half-caliber DT12 of an image side surface of the first lens, a maximum effective half-caliber DT21 of an object side surface of the second lens, a maximum effective half-caliber DT22 of an image side surface of the second lens, and an effective pixel area on an imaging surface of the optical imaging lens satisfies 1 < (dt11+dt12+dt21+dt22)/ImgH < 1.3.
7. The optical imaging lens as claimed in claim 1, wherein a distance TTL between the object side surface of the first lens element, the maximum effective half-aperture DT11 of the object side surface of the first lens element, the maximum effective half-aperture DT12 of the image side surface of the first lens element, the maximum effective half-aperture DT21 of the object side surface of the second lens element, the maximum effective half-aperture DT22 of the image side surface of the second lens element and the imaging surface of the first lens element on the optical axis satisfies 0.7 < (dt11+dt12+dt21+dt22)/TTL < 0.9.
8. The optical imaging lens according to claim 7, wherein a maximum effective half-diameter DT11 of an object side surface of the first lens and a maximum effective half-diameter DT22 of an image side surface of the second lens satisfy 0.5mm (dt11+dt22)/2 is 0.9mm or less.
9. The optical imaging lens according to any one of claims 1 to 8, wherein an air space T23 of the second lens and the third lens on the optical axis, an air space T34 of the third lens and the fourth lens on the optical axis, an air space T45 of the fourth lens and the fifth lens on the optical axis, a center thickness CT3 of the third lens on the optical axis and a center thickness CT4 of the fourth lens on the optical axis satisfy 0.4 < (t23+t34+t45)/(CT 3+ct 4) < 1.2.
10. The optical imaging lens according to any one of claims 1 to 8, further comprising a diaphragm, wherein a sum Σct of a distance SL of the diaphragm to an imaging surface of the optical imaging lens on the optical axis and center thicknesses of the first lens to the fifth lens on the optical axis, respectively, satisfies 0.4 < Σct/SL < 0.8.
CN202311768114.6A 2019-02-13 2019-02-13 Optical imaging lens Pending CN117539030A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311768114.6A CN117539030A (en) 2019-02-13 2019-02-13 Optical imaging lens

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910112528.0A CN109683286B (en) 2019-02-13 Optical imaging lens
CN202311768114.6A CN117539030A (en) 2019-02-13 2019-02-13 Optical imaging lens

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN201910112528.0A Division CN109683286B (en) 2019-02-13 2019-02-13 Optical imaging lens

Publications (1)

Publication Number Publication Date
CN117539030A true CN117539030A (en) 2024-02-09

Family

ID=66195747

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311768114.6A Pending CN117539030A (en) 2019-02-13 2019-02-13 Optical imaging lens

Country Status (1)

Country Link
CN (1) CN117539030A (en)

Also Published As

Publication number Publication date
CN109683286A (en) 2019-04-26

Similar Documents

Publication Publication Date Title
CN110068915B (en) Optical imaging system
CN109164560B (en) Imaging lens
CN108646394B (en) Optical imaging lens
CN108445610B (en) Optical imaging lens group
CN109814238B (en) Imaging lens
CN108287403B (en) Optical imaging lens
CN108508581B (en) Optical imaging system
CN109407284B (en) Optical imaging system
CN114236754B (en) Optical imaging system
CN108469669B (en) Image pickup lens
CN108089317B (en) Optical imaging lens
CN109116520B (en) Optical imaging lens
CN108490588B (en) Optical imaging lens
CN107219614B (en) Optical imaging lens
CN108802972B (en) Optical imaging system
CN108490587B (en) Imaging lens
CN107656358B (en) Optical lens
CN108279484B (en) Optical imaging system
CN112799218A (en) Optical imaging lens
CN109856782B (en) Optical imaging lens
CN108345092B (en) Optical imaging lens
CN114047607B (en) Optical imaging lens
CN108681039B (en) Imaging lens
CN211086742U (en) Optical imaging system
CN108919468B (en) Optical imaging lens

Legal Events

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