CN114647065B - Optical imaging lens - Google Patents
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- CN114647065B CN114647065B CN202210416872.0A CN202210416872A CN114647065B CN 114647065 B CN114647065 B CN 114647065B CN 202210416872 A CN202210416872 A CN 202210416872A CN 114647065 B CN114647065 B CN 114647065B
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- 238000012634 optical imaging Methods 0.000 title claims abstract description 239
- 230000003287 optical effect Effects 0.000 claims abstract description 76
- 238000003384 imaging method Methods 0.000 claims abstract description 75
- 210000001747 pupil Anatomy 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 abstract description 3
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- 230000009286 beneficial effect Effects 0.000 description 6
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- 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
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
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Classifications
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- 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
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The application providesAn optical imaging lens is provided, comprising: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein the first lens has optical power; the second lens has optical power; the third lens has positive focal power, the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface; the fourth lens has negative focal power; the fifth lens has optical power; the sixth lens element has optical power, wherein a distance TTL from an object side surface to an imaging surface of the first lens element along the optical axis and a half of a diagonal length ImgH of an effective pixel region on the imaging surface satisfy: TTL/ImgH<1.5; the sum Σat of the center thickness CT5 of the fifth lens and the air interval on the optical axis between any adjacent two lenses of the first to sixth lenses satisfies: 2.35mm 2 <CT5*∑AT<4.5mm 2 The method comprises the steps of carrying out a first treatment on the surface of the The maximum half field angle Semi-FOV of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy the following conditions: tan (Semi-FOV) EPD>2.90mm。
Description
Technical Field
The present application relates to the field of optical elements, and more particularly, to an optical imaging lens.
Background
In recent years, various portable electronic products such as smart phones and tablet computers have become indispensable tools in life, and portable electronic products have been rapidly developed. At present, the number of lenses of an optical imaging lens is the most direct means for increasing the resolution of the optical imaging lens and improving the shooting image quality, but with the increase of the number of lenses of the optical imaging lens, the miniaturization of the optical imaging lens is difficult. Therefore, on the basis of ensuring miniaturization of the optical imaging lens, how to enable the optical imaging lens to have a large aperture and a larger image surface and good imaging quality is one of the problems to be solved in the field.
Disclosure of Invention
The application provides an optical imaging lens, which sequentially comprises the following components from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein the first lens has optical power; the second lens has optical power; the third lens has positive focal power, the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface; the fourth lens has negative focal power; the fifth lens has optical power; the sixth lens element has optical power, wherein a distance TTL from an object side surface to an imaging surface of the first lens element along the optical axis and a half of a diagonal length ImgH of an effective pixel region on the imaging surface satisfy: TTL/ImgH <1.5; the sum Σat of the center thickness CT5 of the fifth lens and the air interval on the optical axis between any adjacent two lenses of the first to sixth lenses satisfies: 2.35mm 2 <CT5*∑AT<4.5mm 2 The method comprises the steps of carrying out a first treatment on the surface of the The maximum half field angle Semi-FOV of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy the following conditions: tan (Semi-FOV) EPD>2.90mm。
In some embodiments, the maximum effective half-caliber DT11 of the object side surface of the first lens and the maximum effective half-caliber DT31 of the object side surface of the third lens satisfy: 0.7< DT11/DT31<1.8.
In some embodiments, the separation distance T12 of the first lens and the second lens along the optical axis and the separation distance T34 of the third lens and the fourth lens along the optical axis satisfy: 0< T12/T34<1.
In some embodiments, the combined focal length f12 of the first lens and the second lens and the total effective focal length f of the optical imaging lens satisfy: 1< f12/f <2.
In some embodiments, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy: -1< f1/f2<0.
In some embodiments, the center thickness CT5 of the fifth lens and the edge thickness ET5 of the fifth lens satisfy: ET5/CT5<1.5.
In some embodiments, the edge thickness ET1 of the first lens, the edge thickness ET2 of the second lens, the edge thickness ET3 of the third lens, and the edge thickness ET4 of the fourth lens satisfy: (ET 1+ ET 2)/(ET 3+ ET 4) of 0.65 <1.6.
In some embodiments, the center thickness CT1 of the first lens and the center thickness CT5 of the fifth lens satisfy: and 0< CT1/CT5 is less than or equal to 1.02.
In some embodiments, the effective focal length f4 of the fourth lens and the radius of curvature R8 of the image side of the fourth lens satisfy: -1< R8/f4<0.
In some embodiments, a sum Σat of a separation distance T45 of the fourth lens and the fifth lens along the optical axis, a separation distance T56 of the fifth lens and the sixth lens along the optical axis, and an air separation on the optical axis between any adjacent two lenses of the first lens to the sixth lens satisfies: and (T45+T56)/(Sigma AT < 1) of 0.59.
In some embodiments, an on-axis distance SAG41 between an intersection of the object side surface of the fourth lens and the optical axis and an effective radius vertex of the fourth lens object side surface and a separation distance T34 of the third lens and the fourth lens along the optical axis satisfy: -0.4< SAG41/T34< -1.4.
In some embodiments, an on-axis distance SAG42 between an intersection of an image side surface of the fourth lens and an optical axis and an effective radius vertex of the fourth lens image side surface and a center thickness CT4 of the fourth lens satisfy: -2.5< SAG42/CT 4< 0.78.
In some embodiments, the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R4 of the image-side surface of the second lens satisfy: 0< R1/R4<1.
In some embodiments, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f/EPD <2.
In some embodiments, the effective focal length f5 of the fifth lens, the effective focal length f6 of the sixth lens, and the total effective focal length f of the optical imaging lens satisfy: 0< (f5+f6)/f <1.
The application adopts a six-piece lens architecture, and at least one beneficial effect of miniaturization, large aperture, large image surface, good imaging quality and the like is realized while the optical imaging lens meets the imaging requirement by 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 is a schematic diagram showing the structure 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 configuration 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 configuration diagram 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 is a schematic diagram showing the structure 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; and
fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 8.
Detailed Description
For a better understanding of the application, various aspects of the application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the application and is not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, then the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the 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 a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the application, use of "may" means "one or more embodiments of the application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
The optical imaging lens according to the exemplary embodiment of the present application may include, for example, six lenses having optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The six lenses are sequentially arranged from the object side to the image side along the optical axis. In the first lens to the sixth lens, any adjacent two lenses may have an air space therebetween.
In an exemplary embodiment, the optical imaging lens may further include at least one diaphragm. The diaphragm may be provided at an appropriate position as required, for example, between the object side and the first lens.
In an exemplary embodiment, the first lens may have positive or negative optical power; the second lens may have positive or negative optical power; the third lens may have positive optical power; the fourth lens may have negative optical power; the fifth lens may have positive or negative optical power; the sixth lens may have positive or negative optical power. The positive and negative focal power of each lens of the optical imaging lens can be reasonably distributed, so that the low-order aberration of the control system can be effectively balanced, and the imaging quality is improved. The third lens has positive focal power and the fourth lens has negative focal power, which is favorable for correcting off-axis aberration of the optical imaging lens and improving imaging quality.
In an exemplary embodiment, the object side surface of the third lens element may be convex, and the image side surface may be convex, so that a larger adjustment space can be ensured to some extent by reasonably configuring the shape of the third lens element.
In an exemplary embodiment, the optical imaging lens may satisfy TTL/ImgH <1.5, where TTL is a distance from an object side surface of the first lens to an imaging surface along the optical axis, and ImgH is a half of a diagonal length of an effective pixel area on the imaging surface. The optical imaging lens meets TTL/ImgH <1.5, and is favorable for realizing ultrathin and high-pixel optical imaging lens. More specifically, TTL and ImgH satisfy 1.2< TTL/ImgH <1.4.
In an exemplary embodiment, the optical imaging lens may satisfy tan (Semi-FOV) ×epd >2.48mm, where Semi-FOV is a maximum half field angle of the optical imaging lens, and EPD is an entrance pupil diameter of the optical imaging lens. The optical imaging lens meets tan (Semi-FOV) EPD >2.48mm, is beneficial to improving the luminous flux of the optical imaging lens, ensures the relative illumination of an imaging surface and improves the imaging quality. More specifically, semi-FOV and EPD may satisfy: 3.0mm < tan (Semi-FOV) <3.2mm EPD.
In an exemplary embodiment, the optical imaging lens may satisfy 2.35mm 2 <CT5*∑AT<4.5mm 2 Wherein CT5 is the sum of the air intervals on the optical axis between any adjacent two lenses of Σat first to sixth lenses, the center thickness of the fifth lens. The optical imaging lens satisfies 2.35mm 2 <CT5*∑AT<4.5mm 2 The method is beneficial to balancing the field curvature generated by the front lens and the field curvature generated by the rear lens of the optical imaging lens. More specifically, CT5 and Σat may satisfy: 2.35mm 2 <CT5*∑
AT<3.8mm 2 。
In an exemplary embodiment, the optical imaging lens may satisfy 0.7< d 11/DT31<1.8, wherein DT11 is the maximum effective half-caliber of the object side of the first lens and DT31 is the maximum effective half-caliber of the object side of the third lens. The optical imaging lens meets 0.7< D11/DT 31<1.8, the size of the optical imaging lens is reduced, the miniaturization of the optical imaging lens is met, and the resolution power is improved. More specifically, DT11 and DT31 may satisfy: 0.9< DT11/DT31<1.3.
In an exemplary embodiment, the optical imaging lens may satisfy 0< T12/T34<1, where T12 is a separation distance of the first lens and the second lens along the optical axis, and T34 is a separation distance of the third lens and the fourth lens along the optical axis. The optical imaging lens satisfies 0< T12/T34<1, which is favorable for balancing the field curvature generated by the front lens and the field curvature generated by the rear lens of the optical imaging lens, so that the optical imaging lens has reasonable field curvature. More specifically, T12 and T34 may satisfy: 0.1< T12/T34<0.6.
In an exemplary embodiment, the optical imaging lens may satisfy 1< f12/f <2, where f12 is a combined focal length of the first lens and the second lens, and f is a total effective focal length of the optical imaging lens. The optical imaging lens satisfies 1< f12/f <2, is favorable for combining the first lens and the second lens to be used as a lens group with reasonable positive focal power to balance aberration generated by the lens at the rear end, further obtains good imaging quality and realizes high resolution. More specifically, f12 and f may satisfy: 1.3< f12/f <1.8.
In an exemplary embodiment, the optical imaging lens may satisfy-1 < f1/f2<0, where f1 is an effective focal length of the first lens and f2 is an effective focal length of the second lens. The optical imaging lens satisfies-1 < f1/f2<0, which is favorable for reducing the optical sensitivity of the first lens and the second lens and is more favorable for realizing mass production. More specifically, f1 and f2 may satisfy: -0.5< f1/f2< -0.3.
In an exemplary embodiment, the optical imaging lens may satisfy ET5/CT5<1.5, where CT5 is a center thickness of the fifth lens and ET5 is an edge thickness of the fifth lens. The optical imaging lens satisfies ET5/CT5<1.5, is favorable for reducing the processing difficulty of the lens, can reduce the angle between the main light ray and the optical axis when the main light ray is incident on the image plane, and improves the relative illuminance of the image plane. More specifically, CT5 and ET5 may satisfy: 0< ET5/CT5<1.5.
In an exemplary embodiment, the optical imaging lens may satisfy 0.65+ (ET 1+ ET 2)/(ET 3+ ET 4) <1.6, where ET1 is the edge thickness of the first lens, ET2 is the edge thickness of the second lens, ET3 is the edge thickness of the third lens, and ET4 is the edge thickness of the fourth lens. The optical imaging lens meets the requirement of 0.65-1 (ET 1+ ET 2)/(ET 3+ ET 4) <1.6, is favorable for reasonably distributing the edge thickness of the first lens to the fourth lens, can effectively reduce the size of the rear end of the optical imaging lens, ensures the miniaturization of the optical imaging lens, and is favorable for the assembly of the optical imaging lens. More specifically, ET1, ET2, ET3, and ET4 may satisfy: (ET 1+ ET 2)/(ET 3+ ET 4) of 0.65 <1.2.
In an exemplary embodiment, the optical imaging lens may satisfy 0< CT1/CT 5.ltoreq.1.02, where CT1 is the center thickness of the first lens. CT5 is the center thickness of the fifth lens. The optical imaging lens satisfies 0< CT1/CT5 less than or equal to 1.02, is favorable for enabling the optical imaging lens to obtain enough interval space and higher surface freedom degree, and improves the capability of the optical imaging lens for correcting field curvature and astigmatism. More specifically, CT1 and CT5 may satisfy: CT1/CT5 is less than or equal to 1.02 and 0.5.
In an exemplary embodiment, the optical imaging lens may satisfy-1 < R8/f4<0, where R8 is a radius of curvature of an image side surface of the fourth lens, and f4 is an effective focal length of the fourth lens. The optical imaging lens satisfies-1 < R8/f4<0, which is beneficial to improving the matching degree of the optical imaging lens and the chip and better controlling the angle of the principal ray of the maximum view field at the cut-off layer. More specifically, R8 and f4 may satisfy: -0.6< R8/f4< -0.3.
In an exemplary embodiment, the optical imaging lens may satisfy 0.59+ (t45+t56)/Σat1, where T45 is a separation distance of the fourth lens and the fifth lens along the optical axis, T56 is a separation distance of the fifth lens and the sixth lens along the optical axis, Σat is a sum of air intervals on the optical axis between any adjacent two lenses of the first lens to the sixth lens. The optical imaging lens satisfies 0.59 (T45+T56)/(Sigma AT < 1), which is beneficial to improving the lens assembly stability and the consistency of mass production in the optical imaging lens and the throughput rate of the optical imaging lens. More specifically, T45, T56, and Σat may satisfy: and (T45+T56)/(Sigma AT < 0.7) of 0.59.
In an exemplary embodiment, the optical imaging lens may satisfy-0.4 < SAG41/T34< -1.4, where SAG41 is an on-axis distance between an intersection point of an object side surface of the fourth lens and an optical axis to an effective radius vertex of the object side surface of the fourth lens, and T34 is a separation distance of the third lens and the fourth lens along the optical axis. The optical imaging lens meets the conditions of-0.4 < SAG41/T34< -1.4, and the relative brightness of the optical imaging lens is improved. More specifically, SAG41 and T34 may satisfy: 0.7< SAG41/T34< -1.2.
In an exemplary embodiment, the optical imaging lens may satisfy-2.5 < SAG42/CT4 +.0.78, where SAG42 is the on-axis distance between the intersection of the image side of the fourth lens and the optical axis to the apex of the effective radius of the image side of the fourth lens and CT4 is the center thickness of the fourth lens. The optical imaging lens meets the conditions of-2.5 < SAG42/CT4 less than or equal to-0.78, and the relative brightness of the optical imaging lens is improved. More specifically, SAG42 and CT4 satisfy: -2.0< SAG42/CT 4< 0.78.
In an exemplary embodiment, the optical imaging lens may satisfy 0< R1/R4<1, where R1 is a radius of curvature of an object side surface of the first lens and R4 is a radius of curvature of an image side surface of the second lens. The optical imaging lens satisfies 0< R1/R4<1, is favorable for controlling the incidence angle of light rays of an off-axis visual field on an imaging surface, and increases the matching performance with the photosensitive element and the band-pass filter. More specifically, R1 and R4 satisfy 0.2< R1/R4<0.8.
In an exemplary embodiment, the optical imaging lens may satisfy f/EPD <2, where f is the total effective focal length of the optical imaging lens and EPD is the entrance pupil diameter of the optical imaging lens. The optical imaging lens satisfies f/EPD <2, is favorable for making the f-number of the optical imaging lens with a large image plane smaller, can ensure that the optical imaging lens has a large aperture, and also has good imaging quality in a dark environment. More specifically, f and EPD satisfy: 1.5< f/EPD <2.
In an exemplary embodiment, the optical imaging lens may satisfy 0< (f5+f6)/f <1, where f5 is an effective focal length of the fifth lens, f6 is an effective focal length of the sixth lens, and f is a total effective focal length of the optical imaging lens. The optical imaging lens satisfies 0< (f5+f6)/f <1, is favorable for improving chromatic aberration of the optical imaging lens, can adjust a light focusing position, and improves the convergence capacity of the optical imaging lens on light. More specifically, f5, f6, and R14 satisfy: 0.2< (f5+f6)/f <0.4.
In an exemplary embodiment, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on the imaging surface.
The optical imaging lens according to the above embodiment of the present application may employ a plurality of lenses, for example, six lenses as described above. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like of each lens, the volume of the optical imaging lens can be effectively reduced, the sensitivity of the optical imaging lens can be reduced, and the processability of the optical imaging lens can be improved, so that the optical imaging lens is more beneficial to production and processing and is applicable to portable electronic products. The optical imaging lens provided by the embodiment of the application has the characteristics of meeting the imaging requirement and achieving a large aperture and a large image surface.
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 of the first lens to the image side surface of the sixth 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, at least one of an object side surface and an image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are aspherical mirror surfaces.
However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens can be varied to achieve the various results and advantages described in this specification without departing from the technical solution claimed in the present application. For example, although six lenses are described as an example in the embodiment, the optical imaging lens is not limited to include six lenses. The optical imaging lens may also include other numbers of lenses, if desired.
Specific examples of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 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, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, and filter E7.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 1 shows the basic parameter table of the optical imaging lens of embodiment 1, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm).
TABLE 1
In embodiment 1, the total effective focal length f of the optical imaging lens is 6.12mm, the distance TTL from the object side surface of the first lens to the imaging surface along the optical axis is 7.50mm, the half of the diagonal length ImgH of the effective pixel area on the imaging surface is 5.75mm, the half of the maximum field angle Semi-FOV of the optical imaging lens is 42.62 °, and the aperture value Fno of the optical imaging lens is 1.80.
In embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are aspherical, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the aspherical i-th order. Table 2 below shows the higher order coefficients A that can be used for each of the aspherical mirrors S1 to S12 in example 1 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 And A 30 。
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 2.5424E-01 | -2.3103E-02 | 1.0978E-03 | -1.2150E-03 | 2.1677E-06 | -5.2092E-05 | 5.3345E-06 |
| S2 | -7.1028E-02 | 7.8794E-03 | -3.4440E-03 | 5.3501E-04 | -1.2877E-04 | 2.5988E-06 | -9.7820E-06 |
| S3 | -9.4407E-02 | 1.5370E-02 | -2.8266E-03 | 6.4453E-04 | -7.5129E-05 | -1.7036E-06 | 6.8402E-06 |
| S4 | -1.2860E-02 | 9.2435E-03 | -6.1842E-05 | 4.0776E-04 | 8.4870E-05 | 2.8166E-05 | 1.3522E-05 |
| S5 | -1.1021E-01 | -8.0782E-03 | -5.1827E-04 | 5.4681E-04 | 2.6927E-04 | 1.3686E-04 | 5.4415E-05 |
| S6 | -2.5723E-01 | -7.7928E-03 | 6.3716E-04 | 2.4185E-03 | 6.0628E-04 | 3.2551E-04 | 1.3537E-04 |
| S7 | -4.8446E-01 | 4.3048E-02 | -3.0761E-03 | -1.8842E-04 | -2.0396E-03 | -4.8186E-04 | -2.6053E-05 |
| S8 | -6.3360E-01 | 1.2749E-01 | -5.7122E-03 | -2.1074E-03 | -3.0033E-03 | 5.8134E-04 | 4.3941E-04 |
| S9 | -9.9790E-01 | -6.9271E-03 | 5.6821E-02 | 2.7088E-02 | -4.5185E-03 | -6.2593E-03 | -5.3951E-04 |
| S10 | 5.8578E-01 | -1.4374E-01 | 6.0680E-02 | 1.8414E-02 | -9.2575E-03 | -2.6146E-03 | 3.6197E-03 |
| S11 | -8.3589E-01 | 7.9012E-01 | -3.6989E-01 | 1.5732E-01 | -6.5137E-02 | 2.5313E-02 | -1.0461E-02 |
| S12 | -2.8141E+00 | 4.1294E-01 | -9.0818E-02 | 1.0485E-01 | -3.6940E-02 | 7.6517E-03 | -1.5257E-02 |
| Face number | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | 1.6929E-06 | 9.5818E-07 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | -3.2217E-06 | -1.6988E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | 6.2530E-07 | 5.8269E-07 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | 4.4491E-06 | -4.4279E-07 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | 1.8342E-05 | 4.9168E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | 5.4007E-05 | 2.5414E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -1.0271E-06 | -1.6474E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | -3.7853E-06 | -7.5439E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S9 | 2.3203E-04 | 2.0981E-04 | 1.1265E-04 | 5.7220E-05 | -9.8908E-06 | -4.4203E-05 | 4.6590E-06 |
| S10 | -9.0952E-04 | -4.7921E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S11 | 3.5145E-03 | -8.5134E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | -3.5670E-04 | -1.0941E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
TABLE 2
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve of the optical imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different 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 configuration of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, and filter E7.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is 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 negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In embodiment 2, the total effective focal length f of the optical imaging lens is 5.77mm, the distance TTL from the object side surface of the first lens to the imaging surface along the optical axis is 7.50mm, the half of the diagonal length ImgH of the effective pixel area on the imaging surface is 5.70mm, the half of the maximum field angle Semi-FOV of the optical imaging lens is 44.62 °, and the aperture value Fno of the optical imaging lens is 1.87.
Table 3 shows the basic parameter table of the optical imaging lens of embodiment 2, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 4 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.
TABLE 3 Table 3
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -2.2222E-02 | -4.7618E-03 | -9.5211E-04 | -1.5029E-04 | -1.4707E-05 | -7.6688E-06 | -4.2592E-06 |
| S2 | -2.6316E-02 | 2.5815E-03 | -1.6360E-03 | 4.3415E-04 | -7.2207E-05 | -1.0059E-05 | -1.2625E-05 |
| S3 | -2.5085E-03 | 1.0075E-02 | -9.1349E-04 | 6.5265E-04 | -7.7206E-05 | 1.3172E-05 | -1.1503E-05 |
| S4 | 1.9074E-03 | 5.6664E-03 | 2.3788E-04 | 3.4521E-04 | 1.4324E-05 | 1.9130E-05 | -7.4784E-08 |
| S5 | -1.6828E-01 | -8.0895E-03 | 1.5342E-03 | 1.3285E-03 | 4.8346E-04 | 1.5882E-04 | 1.7181E-05 |
| S6 | -3.6011E-01 | -2.4041E-02 | 4.9590E-04 | 1.3342E-03 | 8.5356E-04 | 4.2765E-04 | 2.0776E-04 |
| S7 | -6.5061E-01 | 3.3162E-02 | -1.5497E-02 | -5.8002E-03 | -3.2507E-03 | -1.6525E-03 | -5.2710E-04 |
| S8 | -7.0898E-01 | 1.1073E-01 | -9.7369E-03 | -2.6065E-03 | 2.3408E-03 | -5.9046E-05 | 8.5794E-04 |
| S9 | 7.2680E-01 | 2.9044E-01 | -2.3937E-01 | 4.5185E-02 | 7.1227E-02 | -5.7031E-02 | 1.4235E-02 |
| S10 | 5.1357E-01 | -2.2045E-01 | 3.1761E-02 | 1.5146E-02 | -1.1756E-03 | -2.6125E-03 | -1.0393E-03 |
| S11 | -2.0815E+00 | 1.1560E+00 | -5.7274E-01 | 2.2194E-01 | -6.7527E-02 | 1.9838E-02 | -1.5374E-02 |
| S12 | -2.4346E+00 | 2.5905E-01 | -3.7270E-01 | 6.9390E-02 | -5.7840E-02 | 3.4381E-02 | -1.7069E-02 |
| Face number | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -6.9451E-06 | 2.3168E-06 | 1.0855E-06 | 4.2689E-06 | 4.4615E-06 | 6.6175E-07 | -3.0230E-06 |
| S2 | -2.2973E-05 | -1.0236E-05 | -4.7302E-07 | 6.8746E-06 | 3.3566E-06 | 4.1769E-06 | 2.9352E-06 |
| S3 | -7.1989E-06 | -6.9971E-06 | 2.1346E-06 | 8.7598E-07 | 1.2462E-06 | -1.9609E-06 | 1.5618E-06 |
| S4 | 4.8431E-06 | 1.8250E-06 | 2.6728E-06 | -2.0720E-06 | -7.7071E-07 | -2.8703E-07 | 2.8132E-07 |
| S5 | 3.0031E-06 | -9.1479E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | 7.7492E-05 | 3.9412E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -4.3603E-04 | -6.4193E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | -3.2037E-05 | 4.2306E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S9 | 2.3063E-03 | 2.5033E-04 | -7.2130E-03 | 5.6993E-03 | -2.5098E-03 | 2.1301E-04 | 1.6777E-04 |
| S10 | 8.7135E-05 | 6.9213E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S11 | 1.2442E-02 | -3.6073E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | -1.8329E-03 | -8.9670E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
TABLE 4 Table 4
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve of the optical imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different 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 configuration diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, and filter E7.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is 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 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 negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In embodiment 3, the total effective focal length f of the optical imaging lens is 5.80mm, the distance TTL from the object side surface of the first lens to the imaging surface along the optical axis is 7.50mm, the half of the diagonal length ImgH of the effective pixel area on the imaging surface is 5.70mm, the half of the maximum field angle Semi-FOV of the optical imaging lens is 44.48 °, and the aperture value Fno of the optical imaging lens is 1.87.
Table 5 shows the basic parameter table of the optical imaging lens of embodiment 3, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 6 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 5
TABLE 6
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the optical imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different 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 configuration diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, and filter E7.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In embodiment 4, the total effective focal length f of the optical imaging lens is 5.83mm, the distance TTL from the object side surface of the first lens to the imaging surface along the optical axis is 7.50mm, the half of the diagonal length ImgH of the effective pixel area on the imaging surface is 5.70mm, the half of the maximum field angle Semi-FOV of the optical imaging lens is 44.32 °, and the aperture value Fno of the optical imaging lens is 1.87.
Table 7 shows a basic parameter table of the optical imaging lens of example 4, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 8 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.
TABLE 7
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -1.8262E-02 | -4.9724E-03 | -1.1136E-03 | -2.4401E-04 | -8.4801E-06 | -1.3361E-05 | 4.0527E-06 |
| S2 | -2.9227E-02 | 2.7123E-03 | -1.6872E-03 | 4.4061E-04 | -3.6153E-05 | -4.2066E-05 | -1.6095E-05 |
| S3 | -2.6919E-03 | 1.0703E-02 | -8.2358E-04 | 7.1963E-04 | -4.7176E-05 | 3.8161E-06 | -8.6208E-06 |
| S4 | 3.1309E-03 | 5.6816E-03 | 2.2007E-04 | 3.4659E-04 | 2.2145E-05 | 1.2475E-05 | -6.2860E-07 |
| S5 | -1.6311E-01 | -7.7578E-03 | 9.2556E-04 | 9.3298E-04 | 3.2403E-04 | 1.1158E-04 | 1.1405E-05 |
| S6 | -3.4940E-01 | -2.2860E-02 | 2.6881E-04 | 9.4649E-04 | 5.6686E-04 | 2.7894E-04 | 1.2619E-04 |
| S7 | -6.2994E-01 | 3.5264E-02 | -1.4594E-02 | -4.4481E-03 | -2.8827E-03 | -1.5315E-03 | -4.8941E-04 |
| S8 | -6.8606E-01 | 1.0316E-01 | -8.4694E-03 | -2.1260E-03 | 1.2408E-03 | -4.4660E-04 | 6.5782E-04 |
| S9 | -8.9585E-01 | -6.8916E-02 | 2.1190E-02 | 2.4701E-02 | 6.6830E-03 | -4.2344E-03 | -1.7694E-03 |
| S10 | 5.0574E-01 | -2.1215E-01 | 2.4564E-02 | 1.2597E-02 | -1.6417E-03 | -1.1550E-03 | 4.7182E-04 |
| S11 | -2.1498E+00 | 1.1382E+00 | -5.7355E-01 | 2.1604E-01 | -7.4186E-02 | 2.4861E-02 | -1.4713E-02 |
| S12 | -2.3412E+00 | 2.9422E-01 | -4.1243E-01 | 4.2820E-02 | -9.0516E-02 | 1.3867E-02 | -3.1273E-02 |
| Face number | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -1.0993E-05 | 2.9265E-06 | -3.9741E-06 | 2.9331E-06 | 1.7504E-06 | 3.2911E-06 | -2.8549E-06 |
| S2 | -2.8193E-05 | -8.2632E-06 | -4.0473E-06 | 7.0196E-06 | 1.7465E-06 | 2.2168E-06 | 5.4603E-08 |
| S3 | -4.8021E-06 | -7.9989E-06 | -7.7376E-07 | -1.1001E-06 | 1.5049E-06 | -1.2770E-06 | 2.1018E-06 |
| S4 | 4.3287E-06 | 2.8831E-06 | 2.8245E-07 | -2.0264E-06 | 2.1529E-08 | 7.4934E-08 | 4.6470E-08 |
| S5 | 1.1864E-05 | -7.0285E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | 5.1812E-05 | 3.1956E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -4.1772E-04 | -4.3444E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | -4.7157E-05 | 3.8795E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S9 | -5.6206E-04 | 9.0062E-04 | 2.1290E-04 | -4.7793E-05 | -1.7866E-04 | -9.6232E-05 | -2.9003E-05 |
| S10 | 1.6829E-04 | 5.0927E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S11 | 1.1314E-02 | -3.1372E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | -8.4390E-03 | -1.1068E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
TABLE 8
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve of the optical imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different 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 configuration of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, and filter E7.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is 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 negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In embodiment 5, the total effective focal length f of the optical imaging lens is 5.81mm, the distance TTL from the object side surface of the first lens to the imaging surface along the optical axis is 7.50mm, the half of the diagonal length ImgH of the effective pixel area on the imaging surface is 5.70mm, the half of the maximum field angle Semi-FOV of the optical imaging lens is 44.31 °, and the aperture value Fno of the optical imaging lens is 1.87.
Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 10 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.
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TABLE 9
Table 10
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve of the optical imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different 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, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, and filter E7.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In embodiment 6, the total effective focal length f of the optical imaging lens is 5.53mm, the distance TTL from the object side surface of the first lens to the imaging surface along the optical axis is 7.35mm, the half of the diagonal length ImgH of the effective pixel area on the imaging surface is 5.70mm, the half of the maximum field angle Semi-FOV of the optical imaging lens is 45.76 °, and the aperture value Fno of the optical imaging lens is 1.86.
Table 11 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 12 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.
TABLE 11
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 2.1113E-02 | -6.4637E-03 | -6.6908E-03 | -3.2240E-03 | -1.1784E-03 | -2.4926E-04 | -6.6168E-05 |
| S2 | -3.4682E-02 | -6.1372E-03 | -4.6945E-03 | -2.4579E-03 | -1.2690E-03 | -6.1754E-04 | -2.5722E-04 |
| S3 | -2.4142E-02 | 1.4645E-02 | -3.9149E-03 | -2.3617E-03 | -1.8490E-03 | -9.5594E-04 | -3.5583E-04 |
| S4 | 3.1145E-04 | 9.7079E-03 | 7.7573E-05 | 2.8214E-04 | 5.9107E-05 | 2.1253E-05 | 5.2716E-06 |
| S5 | -1.3130E-01 | -1.1259E-02 | -9.1520E-04 | 2.6386E-04 | 1.3537E-04 | 8.6373E-05 | 2.9540E-05 |
| S6 | -2.8246E-01 | -1.3341E-02 | 4.9683E-04 | 1.1173E-03 | 3.9513E-04 | 2.1281E-04 | 1.2627E-04 |
| S7 | -5.0707E-01 | 4.4054E-02 | -1.9304E-03 | -1.4668E-04 | -1.5519E-03 | -4.4958E-04 | 2.1883E-06 |
| S8 | -6.7805E-01 | 1.2588E-01 | -3.6724E-03 | -1.7791E-04 | -2.4731E-03 | 5.2732E-04 | 5.5916E-04 |
| S9 | -1.1124E+00 | -4.6656E-02 | 6.7595E-02 | 3.2780E-02 | -2.7150E-03 | -7.7467E-03 | -1.8391E-03 |
| S10 | 3.2275E-01 | -1.4139E-01 | 4.7264E-02 | -2.4714E-04 | -1.6025E-02 | -6.2544E-03 | 2.9180E-03 |
| S11 | -9.1390E-01 | 9.6356E-01 | -3.9773E-01 | 1.3754E-01 | -5.6149E-02 | 2.8710E-02 | -1.4386E-02 |
| S12 | -2.1818E+00 | 3.4229E-01 | -2.1654E-01 | 1.2991E-01 | -3.1770E-02 | 2.5154E-02 | -1.8916E-02 |
| Face number | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -7.1207E-05 | -1.0800E-04 | -6.4015E-05 | -2.1894E-05 | 1.6144E-05 | 1.7000E-05 | 9.4141E-06 |
| S2 | -1.1642E-04 | -6.7906E-05 | -4.8146E-05 | -1.8592E-05 | 2.9427E-06 | 1.5442E-05 | 1.1061E-05 |
| S3 | -5.4238E-05 | 3.7478E-05 | 3.8259E-05 | 9.4596E-06 | -2.9335E-06 | -6.8228E-06 | -4.1914E-06 |
| S4 | 4.9329E-06 | -2.1129E-06 | 5.9535E-07 | -5.8993E-07 | 3.9500E-08 | -2.9675E-07 | 1.1645E-07 |
| S5 | 1.7285E-05 | -3.1798E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | 5.6958E-05 | 3.4475E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -2.5286E-05 | -1.0469E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | 6.4083E-05 | 2.1267E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S9 | 2.1751E-04 | 6.9087E-04 | 2.7970E-04 | -4.3212E-05 | -1.4015E-04 | -9.1240E-05 | -2.2014E-05 |
| S10 | 1.0331E-03 | 6.5139E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S11 | 5.0952E-03 | -9.8752E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | -3.8916E-03 | -5.7710E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
Table 12
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which indicates the 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 configuration diagram of an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, and filter E7.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In embodiment 7, the total effective focal length f of the optical imaging lens is 5.75mm, the distance TTL from the object side surface of the first lens to the imaging surface along the optical axis is 7.40mm, the half of the diagonal length ImgH of the effective pixel area on the imaging surface is 5.70mm, the half of the maximum field angle Semi-FOV of the optical imaging lens is 44.01 °, and the aperture value Fno of the optical imaging lens is 1.85.
Table 13 shows a basic parameter table of the optical imaging lens of embodiment 7, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 14 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 13
TABLE 14
Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which indicates the 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 sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, and filter E7.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In embodiment 8, the total effective focal length f of the optical imaging lens is 6.10mm, the distance TTL from the object side surface of the first lens to the imaging surface along the optical axis is 7.60mm, the half of the diagonal length ImgH of the effective pixel area on the imaging surface is 5.70mm, the half of the maximum field angle Semi-FOV of the optical imaging lens is 42.53 °, and the aperture value Fno of the optical imaging lens is 1.80.
Table 15 shows a basic parameter table of the optical imaging lens of example 8, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 16 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.
TABLE 15
Table 16
Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 8, which indicates the 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 17.
| Condition/example | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| tan(Semi-FOV)*EPD | 3.13 | 3.05 | 3.05 | 3.05 | 3.04 | 3.06 | 3.00 | 3.11 |
| TTL/ImgH | 1.30 | 1.32 | 1.32 | 1.32 | 1.32 | 1.29 | 1.30 | 1.33 |
| T12/T34 | 0.33 | 0.11 | 0.11 | 0.11 | 0.11 | 0.50 | 0.38 | 0.33 |
| f12/f | 1.36 | 1.59 | 1.59 | 1.59 | 1.59 | 1.75 | 1.70 | 1.35 |
| CT1/CT5 | 0.95 | 0.95 | 1.01 | 1.02 | 0.99 | 0.54 | 0.93 | 0.84 |
| f1/f2 | -0.41 | -0.43 | -0.43 | -0.44 | -0.44 | -0.37 | -0.48 | -0.39 |
| DT11/DT31 | 1.19 | 0.97 | 0.99 | 1.00 | 0.99 | 1.00 | 1.03 | 1.20 |
| (f5+f6)/f | 0.21 | 0.30 | 0.33 | 0.34 | 0.33 | 0.28 | 0.26 | 0.27 |
| SAG41/T34 | -1.18 | -0.93 | -0.88 | -0.87 | -0.90 | -0.85 | -0.80 | -1.12 |
| (T45+T56)/∑AT | 0.61 | 0.59 | 0.59 | 0.59 | 0.59 | 0.64 | 0.61 | 0.60 |
| R8/f4 | -0.39 | -0.40 | -0.41 | -0.40 | -0.39 | -0.57 | -0.46 | -0.46 |
| SAG42/CT4 | -0.83 | -1.55 | -1.76 | -1.85 | -1.69 | -0.89 | -1.30 | -0.78 |
| (ET1+ET2)/(ET3+ET4) | 1.12 | 1.11 | 1.11 | 1.13 | 1.14 | 0.65 | 0.79 | 1.08 |
| CT5*∑AT | 2.46 | 2.83 | 2.70 | 2.65 | 2.72 | 3.79 | 2.37 | 2.53 |
| ET5/CT5 | 0.92 | 0.58 | 0.56 | 0.60 | 0.63 | 0.53 | 0.44 | 1.06 |
| R1/R4 | 0.61 | 0.41 | 0.34 | 0.34 | 0.42 | 0.21 | 0.32 | 0.60 |
| f/EPD | 1.80 | 1.87 | 1.87 | 1.87 | 1.87 | 1.86 | 1.85 | 1.80 |
TABLE 17
The present application also provides an image forming apparatus, wherein 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 device such as a digital camera or may be an imaging module integrated on a mobile electronic device such as a cell phone. The imaging device is equipped with the optical imaging lens described above.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the application is not limited to the specific combination of the above technical features, but also encompasses other technical features which may be combined with any combination of the above technical features or their equivalents without departing from the spirit of the application. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.
Claims (15)
1. The optical imaging lens is characterized by sequentially comprising, from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, wherein,
The first lens has positive optical power;
the second lens has negative optical power;
the third lens has positive focal power, the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface;
the fourth lens has negative focal power;
the fifth lens has positive optical power;
the sixth lens has a negative optical power,
the distance TTL from the object side surface of the first lens to the imaging surface along the optical axis and half of the diagonal length ImgH of the effective pixel area on the imaging surface satisfy: TTL/ImgH <1.5;
the sum Σat of the center thickness CT5 of the fifth lens and the air interval on the optical axis between any adjacent two lenses of the first to sixth lenses satisfies: 2.35 mm (mm) 2 <CT5*∑AT<4.5 mm 2 ；
The maximum half field angle Semi-FOV of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy the following conditions: tan (SemiFOV) ×epd >2.90 mm;
the number of lenses having optical power in the optical imaging lens is six.
2. The optical imaging lens of claim 1, wherein a maximum effective half-caliber DT11 of an object side surface of the first lens and a maximum effective half-caliber DT31 of an object side surface of the third lens satisfy: 0.7< DT11/DT31<1.8.
3. The optical imaging lens of claim 1, wherein a separation distance T12 of the first lens and the second lens along the optical axis and a separation distance T34 of the third lens and the fourth lens along the optical axis satisfy:
0<T12/T34<1。
4. the optical imaging lens of claim 1, wherein a combined focal length f12 of the first lens and the second lens and a total effective focal length f of the optical imaging lens satisfy:
1<f12/f<2。
5. the optical imaging lens of claim 1, wherein an effective focal length f1 of the first lens and an effective focal length f2 of the second lens satisfy:
-1<f1/f2<0。
6. the optical imaging lens of claim 1, wherein a center thickness CT5 of the fifth lens and an edge thickness ET5 of the fifth lens satisfy:
ET5/CT5<1.5。
7. the optical imaging lens of claim 1, wherein an edge thickness ET1 of the first lens, an edge thickness ET2 of the second lens, an edge thickness ET3 of the third lens, and an edge thickness ET4 of the fourth lens satisfy:
0.65≤(ET1+ET2)/(ET3+ET4)<1.6。
8. the optical imaging lens of claim 1, wherein a center thickness CT1 of the first lens and a center thickness CT5 of the fifth lens satisfy:
0<CT1/CT5≤1.02。
9. The optical imaging lens of claim 1, wherein an effective focal length f4 of the fourth lens and a radius of curvature R8 of an image side surface of the fourth lens satisfy:
-1<R8/f4<0。
10. the optical imaging lens according to claim 1, wherein a sum Σat of a separation distance T45 of the fourth lens and the fifth lens along the optical axis, a separation distance T56 of the fifth lens and the sixth lens along the optical axis, and an air separation on an optical axis between any adjacent two lenses of the first lens to the sixth lens satisfies:
0.59≤(T45+T56)/∑AT<1。
11. the optical imaging lens according to any one of claims 1 to 10, wherein an on-axis distance SAG41 between an intersection point of an object side surface of the fourth lens and an optical axis and an effective radius vertex of the object side surface of the fourth lens and a separation distance T34 of the third lens and the fourth lens along the optical axis satisfy:
-0.4<SAG41/T34<-1.4。
12. the optical imaging lens according to any one of claims 1 to 10, wherein an on-axis distance SAG42 between an intersection point of an image side surface of the fourth lens and an optical axis to an effective radius vertex of the image side surface of the fourth lens and a center thickness CT4 of the fourth lens satisfy:
-2.5<SAG42/CT4≤-0.78。
13. The optical imaging lens of any of claims 1-10, wherein a radius of curvature R1 of an object-side surface of the first lens and a radius of curvature R4 of an image-side surface of the second lens satisfy:
0<R1/R4<1。
14. the optical imaging lens of any of claims 1-10, wherein a total effective focal length f of the optical imaging lens and an entrance pupil diameter EPD of the optical imaging lens satisfy:
f/EPD<2。
15. the optical imaging lens of any of claims 1-10, wherein an effective focal length f5 of the fifth lens, an effective focal length f6 of the sixth lens, and a total effective focal length f of the optical imaging lens satisfy:
0<(f5+f6)/f<1。
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