CN113433665B - Optical imaging lens - Google Patents
Optical imaging lens Download PDFInfo
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- CN113433665B CN113433665B CN202110793632.8A CN202110793632A CN113433665B CN 113433665 B CN113433665 B CN 113433665B CN 202110793632 A CN202110793632 A CN 202110793632A CN 113433665 B CN113433665 B CN 113433665B
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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
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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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
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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Abstract
The application discloses an optical imaging lens, which sequentially comprises from an object side to an image side along an optical axis: a first lens having an optical power; a second lens having positive optical power; a third lens having positive optical power; a fourth lens having a focal power; a fifth lens element with a focal power, wherein the object-side surface of the fifth lens element is convex, and the image-side surface of the fifth lens element is convex; and a sixth lens having optical power. At least one of the first lens to the sixth lens has a non-rotationally symmetric aspherical surface; half of the maximum field angle of the optical imaging lens is satisfied by the HFOV: HFOV > 60 °; and the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens meet the following requirements: TTL/(f 1+ f 2) > 1.38.
Description
Technical Field
The application relates to the field of optical elements, in particular to an optical imaging lens.
Background
In recent years, with the rapid development of the semiconductor industry, the performance of a Charge Coupled Device (CCD) is rapidly improved, so that the imaging quality of an optical imaging lens carrying the CCD is higher and higher. With the upgrading speed of portable electronic products such as smart phones and the like becoming faster and faster, the optical imaging lens mounted on the smart phone gradually develops in a wide-angle direction at present. However, because the conventional technology cannot guarantee that the optical imaging lens has characteristics of wide angle, miniaturization, small distortion and the like, the wide-angle lens will generate large distortion on the basis of guaranteeing miniaturization, and further the imaging quality of the lens is not improved.
Therefore, how to make the lens have wide angle and small distortion while ensuring the miniaturization of the lens has become one of the problems to be solved by many lens designers.
Disclosure of Invention
An aspect of the present application provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens having an optical power; a second lens having a positive optical power; a third lens having positive optical power; a fourth lens having an optical power; a fifth lens element with a focal power, wherein the object-side surface of the fifth lens element is convex, and the image-side surface of the fifth lens element is convex; and a sixth lens having optical power. At least one of the first to sixth lenses has a non-rotationally symmetric aspherical mirror surface; half of the maximum field angle of the optical imaging lens HFOV may satisfy: HFOV > 60 °; and the distance TTL on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens can satisfy the following conditions: TTL/(f 1+ f 2) > 1.38.
In one embodiment, the object-side surface of the first lens element and the image-side surface of the sixth lens element have at least one aspheric mirror surface.
In one embodiment, imgH, the effective focal length f5 of the fifth lens, and the effective focal length f6 of the sixth lens, which are half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens, may satisfy: imgH/(f 5-f 6) < 1.6 and is more than 0.49.
In one embodiment, the radius of curvature R3 of the object-side surface of the second lens, the radius of curvature R4 of the image-side surface of the second lens, and the effective focal length f2 of the second lens may satisfy: f 2/(R3 + R4) is more than 0 and less than or equal to 1.52.
In one embodiment, a distance SAG12 on the optical axis from an intersection point of an air interval T12 of the first lens and the optical axis to an effective radius vertex of the image side surface of the first lens to the first lens may satisfy: 0.5 < SAG12/T12 < 1.5.
In one embodiment, the radius of curvature R9 of the object-side surface of the fifth lens, the radius of curvature R10 of the image-side surface of the fifth lens, and the total effective focal length f of the optical imaging lens may satisfy: f/(R9 + R10) is more than 0 and less than or equal to 0.73.
In one embodiment, the effective focal length f3 of the third lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy: f3 × EPD < 2.85mm 2 。
In one embodiment, the central thickness CT5 of the fifth lens on the optical axis and the edge thickness ET5 of the fifth lens may satisfy: ET5/CT5 is less than or equal to 0.35.
In one embodiment, a center thickness CT5 of the fifth lens on the optical axis, an air interval T23 of the second lens and the third lens on the optical axis, an air interval T34 of the third lens and the fourth lens on the optical axis, and an air interval T45 of the fourth lens and the fifth lens on the optical axis may satisfy: 1 < CT 5/(T23 + T34+ T45) < 2.5.
In one embodiment, a distance SAG31 on the optical axis from the intersection point of the object-side surface of the third lens and the optical axis to the effective radius vertex of the object-side surface of the third lens and a distance SAG61 on the optical axis from the intersection point of the object-side surface of the sixth lens and the optical axis to the effective radius vertex of the object-side surface of the sixth lens may satisfy: -0.5 < SAG31/SAG61 < 0.
In one embodiment, the air space T12 of the first lens and the second lens on the optical axis and the effective semi-aperture DT31 of the object side surface of the third lens can satisfy: 1 < T12/DT31 < 2.
In one embodiment, a sum Σ AT of an air interval T56 of the fifth lens and the sixth lens on the optical axis and air intervals of any adjacent two lenses of the first lens to the sixth lens on the optical axis may satisfy: 0mm 2 ＜T56×∑AT≤0.06mm 2 。
In one embodiment, the central thickness CT3 of the third lens on the optical axis and the edge thickness ET3 of the third lens may satisfy: ET3/CT3 is more than 0.3 and less than 0.6.
In one embodiment, the effective half aperture DT22 of the image side surface of the second lens and the effective half aperture DT32 of the image side surface of the third lens satisfy: DT22/DT32 is less than or equal to 1.01.
Another aspect of the present disclosure provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens having an optical power; a second lens having a positive optical power; a third lens having positive optical power; a fourth lens having an optical power; a fifth lens element with a focal power, wherein the object-side surface of the fifth lens element is convex, and the image-side surface of the fifth lens element is convex; and a sixth lens having optical power; at least one of the first to sixth lenses has a non-rotationally symmetric aspherical mirror surface. Half of the maximum field angle of the optical imaging lens HFOV may satisfy: HFOV > 60 °; and the air space T12 of the first lens and the second lens on the optical axis and the effective semi-caliber DT31 of the object side surface of the third lens can satisfy the following conditions: 1 < T12/DT31 < 2.
In one embodiment, the half of the diagonal length ImgH of the effective pixel area on the imaging plane of the optical imaging lens, the effective focal length f5 of the fifth lens, and the effective focal length f6 of the sixth lens may satisfy: 0.49 < ImgH/(f 5-f 6) < 1.6.
In one embodiment, the radius of curvature R3 of the object-side surface of the second lens, the radius of curvature R4 of the image-side surface of the second lens, and the effective focal length f2 of the second lens may satisfy: f 2/(R3 + R4) is more than 0 and less than or equal to 1.52.
In one embodiment, a distance SAG12 on the optical axis from an intersection point of an air interval T12 of the first lens and the optical axis to an effective radius vertex of the image side surface of the first lens to the first lens may satisfy: 0.5 < SAG12/T12 < 1.5.
In one embodiment, the radius of curvature R9 of the object-side surface of the fifth lens, the radius of curvature R10 of the image-side surface of the fifth lens, and the total effective focal length f of the optical imaging lens may satisfy: f/(R9 + R10) is more than 0 and less than or equal to 0.73.
In one embodiment, the effective focal length f3 of the third lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy: f3 × EPD < 2.85mm 2 。
In one embodiment, the central thickness CT5 of the fifth lens on the optical axis and the edge thickness ET5 of the fifth lens may satisfy: ET5/CT5 is less than or equal to 0.35.
In one embodiment, a center thickness CT5 of the fifth lens on the optical axis, an air interval T23 of the second lens and the third lens on the optical axis, an air interval T34 of the third lens and the fourth lens on the optical axis, and an air interval T45 of the fourth lens and the fifth lens on the optical axis may satisfy: 1 < CT 5/(T23 + T34+ T45) < 2.5.
In one embodiment, a distance SAG31 on the optical axis from the intersection point of the object-side surface of the third lens and the optical axis to the effective radius vertex of the object-side surface of the third lens and a distance SAG61 on the optical axis from the intersection point of the object-side surface of the sixth lens and the optical axis to the effective radius vertex of the object-side surface of the sixth lens may satisfy: -0.5 < SAG31/SAG61 < 0.
In one embodiment, a sum Σ AT of an air interval T56 of the fifth lens and the sixth lens on the optical axis and air intervals of any adjacent two lenses of the first lens to the sixth lens on the optical axis may satisfy: 0mm 2 ＜T56×∑AT≤0.06mm 2 。
In one embodiment, the central thickness CT3 of the third lens on the optical axis and the edge thickness ET3 of the third lens may satisfy: ET3/CT3 is more than 0.3 and less than 0.6.
In one embodiment, the effective semi-aperture DT22 of the image-side surface of the second lens and the effective semi-aperture DT32 of the image-side surface of the third lens satisfy: DT22/DT32 is less than or equal to 1.01.
In one embodiment, the distance TTL on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens, the effective focal length f1 of the first lens, and the effective focal length f2 of the second lens may satisfy: TTL/(f 1+ f 2) > 1.38.
The application provides an optical imaging lens which is applicable to portable electronic products and has at least one characteristic of wide angle, miniaturization, small distortion, high pixel, good imaging quality and the like through reasonable distribution of focal power and optimization of optical parameters.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application;
fig. 2A to 2C respectively show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of an optical imaging lens according to embodiment 1 of the present application;
fig. 3 is a schematic structural view showing an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4C respectively show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of an optical imaging lens according to embodiment 2 of the present application;
fig. 5 is a schematic structural view showing an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6C respectively show axial chromatic aberration curves, astigmatism curves, and distortion curves of an optical imaging lens according to embodiment 3 of the present application;
fig. 7 is a schematic structural view showing an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8C respectively show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of an optical imaging lens according to embodiment 4 of the present application;
fig. 9 is a schematic structural view showing an optical imaging lens according to embodiment 5 of the present application;
fig. 10A to 10C respectively show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of an optical imaging lens according to embodiment 5 of the present application;
fig. 11 is a schematic structural view showing an optical imaging lens according to embodiment 6 of the present application;
fig. 12A to 12C respectively show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of an optical imaging lens according to embodiment 6 of the present application;
fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application; and
fig. 14A to 14C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve, respectively, of an optical imaging lens according to embodiment 7 of the present application.
Detailed Description
For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.
It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after the list of listed features, that the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The following provides a detailed description of the features, principles, and other aspects of the present application.
An optical imaging lens according to an exemplary embodiment of the present application may include six lenses having optical powers, which are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, respectively. The six lenses are arranged along the optical axis in sequence from the object side to the image side. Any two adjacent lenses of the first lens to the sixth lens may have an air space therebetween.
In an exemplary embodiment, the first lens may have a positive power or a negative power; the second lens may have a positive optical power; the third lens may have a positive optical power; the fourth lens may have a positive power or a negative power; the fifth lens can have positive focal power or negative focal power, and the object side surface of the fifth lens can be a convex surface, and the image side surface of the fifth lens can be a convex surface; and the sixth lens may have a positive power or a negative power.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: the HFOV is more than 60 degrees, wherein the HFOV is half of the maximum field angle of the optical imaging lens. Meets the HFOV more than 60 degrees and is beneficial to realizing the wide-angle characteristic.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: TTL/(f 1+ f 2) > 1.38, wherein TTL is the distance on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens, f1 is the effective focal length of the first lens, and f2 is the effective focal length of the second lens. More specifically, TTL, f1, and f2 further can satisfy: TTL/(f 1+ f 2) > 1.80. The TTL/(f 1+ f 2) > 1.38 is satisfied, which is beneficial to the lens to balance aberration and the lens to obtain better imaging quality.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.49 < ImgH/(f 5-f 6) < 1.6, wherein ImgH is a half of a diagonal length of an effective pixel region on an imaging plane of the optical imaging lens, f5 is an effective focal length of the fifth lens, and f6 is an effective focal length of the sixth lens. More specifically, imgH, f5, and f6 further satisfy: imgH/(f 5-f 6) < 1.2 < 0.7. The requirement that ImgH/(f 5-f 6) is more than 0.49 and less than 1.6 is met, the coma aberration of the lens is favorably corrected, the size of the lens is favorably reduced, and the economic benefit is improved.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: f 2/(R3 + R4) is more than 0 and less than or equal to 1.52, wherein R3 is the curvature radius of the object side surface of the second lens, R4 is the curvature radius of the image side surface of the second lens, and f2 is the effective focal length of the second lens. More specifically, f2, R3 and R4 further may satisfy: f 2/(R3 + R4) is more than 0.7 and less than or equal to 1.52. F 2/(R3 + R4) is more than 0 and less than or equal to 1.52, which is beneficial to the size smooth transition of the second lens and the reduction of the molding and assembling difficulty of the second lens.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.5 < SAG12/T12 < 1.5, wherein T12 is an air interval between the first lens and the second lens on the optical axis, and SAG12 is a distance on the optical axis from an intersection point of the image side surface of the first lens and the optical axis to an effective radius vertex of the image side surface of the first lens. More specifically, SAG12 and T12 further satisfy: 0.7 < SAG12/T12 < 1.2. The requirement that 0.5 < SAG12/T12 < 1.5 is met, and the structure of the first lens can be reasonably distributed.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: f/(R9 + R10) is more than 0 and less than or equal to 0.73, wherein R9 is the curvature radius of the object side surface of the fifth lens, R10 is the curvature radius of the image side surface of the fifth lens, and f is the total effective focal length of the optical imaging lens. f/(R9 + R10) is more than 0 and less than or equal to 0.73, the structural size of the fifth lens can be uniformly distributed, and the processing risk of the fifth lens can be remarkably reduced.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: f3 × EPD < 2.85mm 2 Where f3 is the effective focal length of the third lens and EPD is the entrance pupil diameter of the optical imaging lens. More specifically, f3 and EPD may further satisfy: 1.1mm 2 ＜f3×EPD＜1.8mm 2 . F3 multiplied by EPD is less than 2.85mm 2 On the premise of realizing a large aperture and a large caliber, the focal power of each lens can be reasonably distributed, the spherical aberration of the lens is reduced, the sinusoidal aberration of the lens is improved, and the characteristics of small aberration and the like are further facilitated.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: ET5/CT5 is less than or equal to 0.35, wherein CT5 is the central thickness of the fifth lens on the optical axis, and ET5 is the edge thickness of the fifth lens. The ET5/CT5 is less than or equal to 0.35, the thickness uniformity of the fifth lens can be realized, the chromatic aberration and the off-axis aberration can be improved, and the distortion of the lens can be reduced.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1 < CT 5/(T23 + T34+ T45) < 2.5, where CT5 is the center thickness of the fifth lens on the optical axis, T23 is the air space between the second lens and the third lens on the optical axis, T34 is the air space between the third lens and the fourth lens on the optical axis, and T45 is the air space between the fourth lens and the fifth lens on the optical axis. More specifically, CT5, T23, T34, and T45 may further satisfy: 1.4 < CT 5/(T23 + T34+ T45) < 2.1. The requirement that 1 < CT 5/(T23 + T34+ T45) < 2.5 is met, the space occupancy of the fifth lens is restrained, the reasonable distribution of the lenses is realized, and the integral space utilization rate of the lens is improved.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: -0.5 < SAG31/SAG61 < 0, wherein SAG31 is a distance on the optical axis from an intersection of the object-side surface of the third lens and the optical axis to an effective radius vertex of the object-side surface of the third lens, and SAG61 is a distance on the optical axis from an intersection of the object-side surface of the sixth lens and the optical axis to an effective radius vertex of the object-side surface of the sixth lens. More specifically, SAG31 and SAG61 further satisfy: -0.4 < SAG31/SAG61 < 0. And the requirements of-0.5 & lt SAG31/SAG61 & lt 0 are favorable for controlling the surface type and the focal power of the third lens and the sixth lens and reducing the forming risk of the third lens and the sixth lens.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1 < T12/DT31 < 2, where T12 is the air separation on the optical axis of the first and second lenses and DT31 is the effective half aperture of the object side of the third lens. T12/DT31 is more than 1 and less than 2, so that the space between the lenses in the lens can be reasonably distributed, partial aberration can be eliminated, and the imaging quality of the lens is improved.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0mm 2 ＜T56×∑AT≤0.06mm 2 Where T56 is an air interval on the optical axis of the fifth lens and the sixth lens, and Σ AT is a sum of air intervals on the optical axis of any adjacent two lenses of the first lens to the sixth lens. Satisfy 0mm 2 ＜T56×∑AT≤0.06mm 2 The proportion of the air space between the fifth lens and the sixth lens is restrained, the total length of the lens is reduced, and the economy is improved.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.3 < ET3/CT3 < 0.6, where CT3 is the central thickness of the third lens on the optical axis and ET3 is the edge thickness of the third lens. More specifically, ET3 and CT3 further satisfy: ET3/CT3 is more than 0.4 and less than 0.6. The requirement that ET3/CT3 is more than 0.3 and less than 0.6 is met, the thickness uniformity of the third lens can be realized, the forming defect of the third lens is avoided, and the production yield of the third lens is improved.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: DT22/DT32 is less than or equal to 1.01, wherein DT22 is the effective half aperture of the image side surface of the second lens, and DT32 is the effective half aperture of the image side surface of the third lens. The requirement that DT22/DT32 is less than or equal to 1.01 is met, the light output quantity of the second lens and the light output quantity of the third lens are favorably controlled, and the low-order aberration of the lens is favorably and effectively balanced by controlling the marginal rays.
In an exemplary embodiment, at least one lens among the first lens to the sixth lens in the optical imaging lens according to the present application has an aspherical mirror surface that is not rotationally symmetric. Illustratively, the object-side surface and the image-side surface of the sixth lens may be non-rotationally symmetric aspherical mirror surfaces.
In an embodiment of the present application, at least one mirror surface of the object side surface of the first lens element to the image side surface of the fifth lens element is an aspheric mirror surface. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics, and has advantages of improving distortion aberration and improving astigmatic aberration. After the aspheric lens is adopted, the aberration generated in imaging can be eliminated as much as possible, and the imaging quality is further improved. Optionally, at least one of 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 aspheric mirror surface. Optionally, each of the first, second, third, fourth, and fifth lenses has an object-side surface and an image-side surface that are aspheric mirror surfaces.
In an exemplary embodiment, an optical imaging lens according to the present application further includes a stop disposed between the second lens and the third lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element on the imaging surface. The application provides an optical imaging lens which has the characteristics of wide angle, small distortion, high pixel, miniaturization and the like and adopts an aspheric surface and a free-form surface. The optical imaging lens according to the above-described 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 type, the central thickness of each lens, the on-axis distance between each lens and the like, the volume of the optical imaging lens can be effectively reduced, the processability of the optical imaging lens can be improved, and the optical imaging lens is more favorable for production and processing.
However, it will be appreciated by those skilled in the art that the number of lenses constituting an optical imaging lens may be varied to achieve the various results and advantages described in the present specification without departing from the claimed subject matter. For example, although six lenses are exemplified in the embodiment, the optical imaging lens is not limited to including six lenses. The optical imaging lens may also include other numbers of lenses, if desired.
Specific examples of an optical imaging lens applicable to the above-described embodiments are further described below with reference to the drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2C. Fig. 1 shows a schematic structural diagram of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens element E1 has a negative refractive power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive refractive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has a negative refractive power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging plane S15.
Table 1 shows a basic parameter table of the optical imaging lens of embodiment 1, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
TABLE 1
In this example, the total effective focal length f of the optical imaging lens is 1.73mm, the total length TTL of the optical imaging lens (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 of the optical imaging lens) is 5.38mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S15 of the optical imaging lens is 3.05mm, the half HFOV of the maximum field angle of the optical imaging lens is 61.06 °, and the aperture value Fno of the optical imaging lens is 2.27.
In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 to the fifth lens E5 are both rotationally symmetric aspheric surfaces, and the surface type x of each rotationally symmetric aspheric lens can be defined by, but is not limited to, the following aspheric surface formula:
wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c =1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspherical surface. The high-order term coefficients A for each of the rotationally symmetric aspherical mirror surfaces S1 to S10 that can be used in example 1 are given in tables 2-1 and 2-2 below 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 、A 22 、A 24 、A 26 、A 28 And A 30 。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 1.8928E+00 | -2.6612E-01 | 9.9734E-02 | -3.1225E-02 | 1.4297E-02 | -4.9523E-03 | 2.7647E-03 |
| S2 | 5.3288E-01 | -1.1253E-01 | 8.9317E-03 | -2.4249E-03 | 2.5051E-03 | 1.6451E-04 | 1.9479E-04 |
| S3 | -4.4165E-02 | -1.1646E-02 | 9.7234E-04 | 8.1750E-04 | 3.7840E-04 | 7.7897E-05 | 6.4864E-06 |
| S4 | 1.7100E-02 | 1.4035E-03 | 4.6426E-04 | 1.5190E-04 | 5.3107E-05 | 2.2284E-05 | 4.7781E-06 |
| S5 | 2.1388E-03 | -8.9667E-04 | -2.0932E-04 | -5.2017E-05 | -2.7878E-05 | -1.0840E-05 | -4.2215E-06 |
| S6 | -1.1766E-01 | -4.1191E-04 | -2.5503E-03 | 1.5081E-04 | -4.6014E-05 | -5.7572E-05 | -5.3027E-06 |
| S7 | -1.8858E-01 | 1.2661E-02 | -5.5370E-03 | 8.0444E-04 | 1.9214E-04 | 1.0645E-05 | -4.0599E-05 |
| S8 | -1.5004E-01 | 3.3796E-02 | -6.6574E-03 | 1.4669E-03 | -1.3779E-05 | -6.4599E-07 | -6.0395E-05 |
| S9 | -4.4670E-02 | -1.7927E-02 | 6.7959E-03 | -1.7932E-03 | 4.5527E-04 | 4.6386E-05 | -2.2941E-06 |
| S10 | 8.9282E-01 | -1.8877E-01 | 6.2832E-02 | -1.3709E-02 | 4.9826E-03 | -2.4438E-03 | 1.5658E-03 |
TABLE 2-1
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -1.0545E-03 | 5.2435E-04 | -2.4168E-04 | 8.7418E-05 | -3.0856E-05 | 8.5620E-06 | -4.0904E-06 |
| S2 | -2.9693E-05 | -2.4144E-05 | 2.2920E-05 | -4.1100E-06 | 1.4966E-05 | 6.7213E-06 | -7.3673E-06 |
| S3 | -8.4902E-06 | -8.0022E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | -2.1540E-07 | -2.1046E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | 3.7790E-06 | 9.9440E-07 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | 8.8322E-06 | 5.8680E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | 1.5698E-05 | -3.1551E-06 | 3.6165E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | 1.6718E-05 | -6.8171E-06 | 9.9778E-07 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S9 | -2.0944E-05 | -1.7243E-05 | 9.0309E-06 | -4.2023E-06 | 1.1278E-07 | -3.8349E-06 | 2.0903E-06 |
| S10 | -8.1661E-04 | 1.9252E-04 | -2.5457E-04 | 1.0637E-04 | -1.8603E-05 | 3.8850E-05 | -1.4068E-05 |
Tables 2 to 2
In embodiment 1, the object-side surface S11 and the image-side surface S12 of the sixth lens E6 are non-rotationally symmetric aspheric surfaces (i.e., AAS surfaces), and the surface type of the non-rotationally symmetric aspheric surfaces can be defined by, but is not limited to, the following non-rotationally symmetric aspheric surface formula:
wherein z is a rise of a plane parallel to the optical axis direction; c is the curvature of the apex of the non-rotationally symmetric aspheric surface; k is a conic coefficient; r is the radius value; ZP j Is the jth Zernike polynomial; c (j+1) Is ZP j The coefficient of (a). In the AAS surface coefficient list of example 1, the Zernike term is derived from ZP 1 To ZP 66 Having a corresponding SCO coefficient C 2 To C 67 The SCO coefficients not given are all 0. The Zernike polynomial coefficients C of the non-rotationally symmetric aspherical surfaces S11 and S12 usable in example 1 are given in tables 3-1 to 3-3 below 2 、C 5 、C 6 、C 12 、C 13 、C 14 、C 23 、C 24 、C 25 、C 26 、C 38 、C 39 、C 40 、C 41 、C 42 、C 57 、C 58 、C 59 、C 60 、C 61 And C 62 。
| AAS noodle | C2 | C5 | C6 | C12 | C13 | C14 | C23 |
| S11 | -6.6492E-01 | 0.0000E+00 | -8.7612E-01 | 0.0000E+00 | 0.0000E+00 | -1.4636E-01 | 0.0000E+00 |
| S12 | -4.9238E-01 | 1.8865E-02 | -6.5018E-01 | 8.8394E-03 | 8.1220E-03 | -1.4041E-01 | 7.1379E-03 |
TABLE 3-1
| AAS noodle | C24 | C25 | C26 | C38 | C39 | C40 | C41 |
| S11 | 0.0000E+00 | 0.0000E+00 | 6.1231E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | 2.6434E-03 | 2.1989E-03 | 1.3886E-02 | 2.4873E-03 | -3.2364E-04 | 9.6670E-04 | 2.5060E-05 |
TABLE 3-2
| AAS noodle | C42 | C57 | C58 | C59 | C60 | C61 | C62 |
| S11 | 3.1094E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 6.7165E-03 |
| S12 | 1.7701E-03 | -1.7581E-03 | -4.2581E-04 | -8.4701E-05 | -1.7906E-04 | -3.0694E-04 | 5.2661E-03 |
Tables 3 to 3
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 2A to 2C, the optical imaging lens according to embodiment 1 can achieve good imaging quality.
Example 2
An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4C. In this embodiment and the following embodiments, descriptions of parts similar to those of embodiment 1 will be omitted for the sake of brevity. Fig. 3 shows a schematic structural diagram of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens element E1 has a negative refractive power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive refractive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive refractive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has a negative refractive power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging plane S15.
In this example, the total effective focal length f of the optical imaging lens is 1.48mm, the total length TTL of the optical imaging lens is 5.38mm, a half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.05mm, a half HFOV of the maximum field angle of the optical imaging lens is 61.10 °, and the aperture value Fno of the optical imaging lens is 2.27.
Table 4 shows a basic parameter table of the optical imaging lens of embodiment 2, in which the units of the radius of curvature, the thickness/distance, and the focal length are millimeters (mm). Tables 5-1 and 5-2 show the high-order term coefficients that can be used for each rotationally symmetric aspherical mirror surface in example 2, wherein each rotationally symmetric aspherical mirror surface type can be defined by formula (1) given in example 1 above. Tables 6-1 to 6-3 show the Zernike polynomial coefficients of the non-rotationally symmetric aspherical surfaces that can be used in example 2, respectively, wherein the non-rotationally symmetric aspherical surface types can be defined by the formulas (2), (3) given in example 1 above.
TABLE 4
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 1.8584E+00 | -2.6293E-01 | 1.0359E-01 | -3.4315E-02 | 1.6005E-02 | -6.1515E-03 | 3.2115E-03 |
| S2 | 5.1602E-01 | -1.1191E-01 | 1.2754E-02 | -5.2833E-03 | 2.6042E-03 | -7.1687E-05 | 1.5532E-04 |
| S3 | -5.7043E-02 | -7.6713E-03 | 1.4390E-03 | 6.5719E-04 | 2.5847E-04 | 2.0016E-05 | -4.0322E-06 |
| S4 | 1.6477E-02 | 2.0951E-03 | 6.4563E-04 | 1.7855E-04 | 5.2915E-05 | 1.3820E-05 | -1.8320E-07 |
| S5 | -4.8289E-04 | -1.0439E-03 | -1.9505E-04 | -1.1245E-05 | 5.7402E-06 | 2.9687E-06 | 8.1593E-07 |
| S6 | -1.2365E-01 | -9.8323E-03 | -2.8121E-03 | -2.4033E-04 | 1.9989E-04 | 1.2924E-04 | 1.0317E-04 |
| S7 | -1.8418E-01 | 5.9271E-03 | 3.7241E-03 | 2.7595E-03 | 9.3883E-04 | -1.9628E-04 | -2.4335E-04 |
| S8 | -7.8103E-02 | 3.3577E-02 | 2.4857E-03 | 8.7178E-04 | -3.8984E-04 | -9.9967E-04 | -5.1377E-04 |
| S9 | -1.3183E-01 | -1.0932E-02 | 6.1469E-03 | -1.6096E-03 | -8.4277E-04 | 2.1753E-04 | 7.2237E-05 |
| S10 | 7.8812E-01 | -1.4839E-01 | 7.5603E-02 | -1.4576E-02 | -2.7849E-03 | -3.9908E-03 | 2.2039E-03 |
TABLE 5-1
TABLE 5-2
| AAS noodle | C2 | C5 | C6 | C12 | C13 | C14 | C23 |
| S11 | -9.6558E-01 | 0.0000E+00 | -1.2028E+00 | 0.0000E+00 | 0.0000E+00 | -1.1313E-01 | 0.0000E+00 |
| S12 | -5.9180E-01 | 6.6356E-02 | -7.1862E-01 | 6.5120E-03 | 2.0087E-02 | -1.1329E-01 | 9.2233E-02 |
TABLE 6-1
| AAS noodle | C24 | C25 | C26 | C38 | C39 | C40 | C41 |
| S11 | 0.0000E+00 | 0.0000E+00 | 1.0556E-01 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | 1.0519E-02 | 2.4367E-03 | 2.7275E-02 | 3.0916E-02 | -1.8682E-02 | 8.8214E-03 | 2.5060E-05 |
TABLE 6-2
| AAS noodle | C42 | C57 | C58 | C59 | C60 | C61 | C62 |
| S11 | -9.7110E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 8.8660E-03 |
| S12 | -2.5154E-03 | 2.2342E-04 | -6.8863E-03 | -1.1577E-03 | -3.5257E-03 | -1.3039E-03 | 8.1815E-04 |
Tables 6 to 3
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 2. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 4A to 4C, the optical imaging lens according to embodiment 2 can achieve good imaging quality.
Example 3
An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6C. Fig. 5 shows a schematic structural diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image plane S15.
The first lens element E1 has a negative refractive power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has a negative refractive power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive refractive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the optical imaging lens is 1.38mm, the total length TTL of the optical imaging lens is 5.36mm, a half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.05mm, a half HFOV of the maximum field angle of the optical imaging lens is 60.50 °, and the aperture value Fno of the optical imaging lens is 2.27.
Table 7 shows a basic parameter table of the optical imaging lens of embodiment 3, in which the units of the radius of curvature, the thickness/distance, and the focal length are millimeters (mm). Tables 8-1 and 8-2 show the high-order term coefficients that can be used for each rotationally symmetric aspherical mirror surface in embodiment 3, wherein each rotationally symmetric aspherical mirror surface type can be defined by formula (1) given in embodiment 1 above. Tables 9-1 to 9-3 show the Zernike polynomial coefficients of the non-rotationally symmetric aspherical surfaces usable in example 3, respectively, wherein the non-rotationally symmetric aspherical surface types can be defined by formulas (2), (3) given in example 1 above.
TABLE 7
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 3.3755E-01 | -4.5115E-02 | 9.7757E-03 | -2.3507E-03 | 5.6848E-04 | -1.2638E-04 | 2.4312E-05 |
| S2 | 1.7117E-01 | -1.7212E-02 | 2.5023E-03 | -3.1030E-04 | -7.9992E-05 | 8.9340E-05 | -4.4165E-05 |
| S3 | -2.2167E-03 | -1.7392E-03 | -1.4347E-04 | -6.6909E-05 | 2.2215E-05 | -4.2596E-06 | 2.5229E-06 |
| S4 | 1.7163E-02 | 3.4609E-04 | 1.2139E-04 | 7.1335E-05 | 7.4606E-06 | -3.1268E-06 | 7.5531E-07 |
| S5 | -5.1753E-02 | -3.9226E-02 | -3.5109E-02 | -2.8200E-02 | -1.8617E-02 | -9.6987E-03 | -3.8159E-03 |
| S6 | -1.0450E-01 | 8.8415E-02 | 8.5525E-03 | -6.0331E-02 | -8.2275E-02 | -5.8741E-02 | -2.7747E-02 |
| S7 | -1.4971E-01 | 1.0235E-02 | -3.5496E-03 | 8.4642E-04 | 3.7404E-04 | 7.1115E-05 | 8.3285E-06 |
| S8 | -1.3955E-01 | 1.9567E-02 | -3.8038E-03 | 1.1004E-03 | 2.0612E-04 | 4.0741E-06 | 1.6639E-06 |
| S9 | -8.2843E-03 | -9.3782E-03 | 3.3179E-03 | -3.3343E-04 | -5.7474E-05 | -2.2185E-05 | 4.7640E-05 |
| S10 | 5.0083E-01 | -8.0058E-02 | 1.9132E-02 | -3.6875E-03 | 2.8043E-03 | -1.6904E-03 | 7.1655E-04 |
TABLE 8-1
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -3.8448E-06 | 4.7510E-07 | -4.3655E-08 | 2.8329E-09 | -1.2142E-10 | 3.0639E-12 | -3.4338E-14 |
| S2 | 1.3499E-05 | -2.7505E-06 | 3.8876E-07 | -3.8108E-08 | 2.4756E-09 | -9.5420E-11 | 1.6414E-12 |
| S3 | -5.2744E-07 | 2.9430E-08 | 4.8080E-10 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | 2.4172E-07 | -1.4903E-07 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | -1.0333E-03 | -1.5132E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | -8.4982E-03 | -1.3239E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | 1.6978E-05 | -8.2542E-06 | -1.8611E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | 1.2088E-05 | -4.4536E-06 | -1.1493E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S9 | -3.3786E-05 | 1.3897E-05 | -5.4887E-08 | -2.6974E-06 | 1.1279E-06 | -1.9406E-07 | 1.2609E-08 |
| S10 | -3.5236E-04 | 2.6231E-04 | -1.5808E-04 | 5.7933E-05 | -1.2332E-05 | 1.4161E-06 | -6.7955E-08 |
TABLE 8-2
| AAS noodle | C2 | C5 | C6 | C12 | C13 | C14 | C23 |
| S11 | -6.7626E+02 | 0.0000E+00 | -1.4579E+03 | 0.0000E+00 | 0.0000E+00 | -1.2303E+03 | 0.0000E+00 |
| S12 | -6.7376E-01 | -2.2933E-03 | -8.0576E-01 | -1.1905E-01 | 2.1870E-02 | -1.4478E-01 | 1.3343E-01 |
TABLE 9-1
| AAS noodle | C24 | C25 | C26 | C38 | C39 | C40 | C41 |
| S11 | 0.0000E+00 | 0.0000E+00 | -5.8559E+02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | 3.7852E-02 | 1.4066E-02 | 7.1894E-02 | 3.7269E-02 | -2.5425E-02 | 1.1048E-02 | -6.3914E-03 |
TABLE 9-2
| AAS noodle | C42 | C57 | C58 | C59 | C60 | C61 | C62 |
| S11 | -1.5463E+02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | -1.7726E+01 |
| S12 | -1.6482E-02 | -1.0189E-02 | -6.5730E-03 | -2.2087E-03 | -8.9928E-03 | -5.2865E-03 | 9.4437E-04 |
Tables 9 to 3
Fig. 6A shows on-axis chromatic aberration curves of the optical imaging lens of embodiment 3, which represent the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 3. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 6A to 6C, the optical imaging lens according to embodiment 3 can achieve good imaging quality.
Example 4
An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8C. Fig. 7 shows a schematic configuration diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens element E1 has negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive refractive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has a negative refractive power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging plane S15.
In this example, the total effective focal length f of the optical imaging lens is 1.38mm, the total length TTL of the optical imaging lens is 5.36mm, a half ImgH of a diagonal length of an effective pixel area on the imaging surface S15 of the optical imaging lens is 3.05mm, a half HFOV of a maximum field angle of the optical imaging lens is 60.69 °, and an aperture value Fno of the optical imaging lens is 2.27.
Table 10 shows a basic parameter table of the optical imaging lens of embodiment 4, in which the units of the radius of curvature, the thickness/distance, and the focal length are millimeters (mm). Tables 11-1 and 11-2 show high-order term coefficients that can be used for each rotationally symmetric aspherical mirror surface in example 4, wherein each rotationally symmetric aspherical mirror surface type can be defined by formula (1) given in example 1 above. Tables 12-1 to 12-3 show Zernike polynomial coefficients of non-rotationally symmetric aspheric surfaces that can be used in example 4, wherein the non-rotationally symmetric aspheric surface profiles can be defined by the formulas (2), (3) given in example 1 above.
TABLE 11-1
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -3.5597E-03 | 3.7116E-04 | -1.3641E-03 | 5.2385E-04 | 1.4716E-04 | 4.1248E-04 | 5.7837E-05 |
| S2 | 6.3054E-05 | -2.9432E-05 | 5.2002E-05 | -5.2560E-05 | 2.3400E-05 | -4.4950E-06 | 2.6924E-07 |
| S3 | -1.6248E-06 | -7.1958E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | 3.7431E-07 | -4.4940E-07 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | -9.8350E-07 | 3.5481E-07 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | 3.3328E-05 | 1.2337E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -1.5505E-04 | -5.3422E-05 | -7.6705E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | -2.5297E-04 | -8.1838E-05 | -1.4123E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S9 | 4.8462E-06 | -1.4676E-05 | -2.4325E-05 | 3.0386E-07 | 6.4292E-06 | 1.9214E-06 | -1.0170E-06 |
| S10 | 1.3747E-04 | 5.1747E-04 | -3.1158E-04 | -1.3648E-04 | -2.8100E-05 | 7.4132E-05 | -1.2210E-05 |
TABLE 11-2
| AAS noodle | C2 | C5 | C6 | C12 | C13 | C14 | C23 |
| S11 | -1.0356E+00 | 0.0000E+00 | -1.2114E+00 | 0.0000E+00 | 0.0000E+00 | -3.8261E-02 | 0.0000E+00 |
| S12 | -8.1460E-01 | 3.6989E-02 | -9.3409E-01 | 6.5120E-03 | 7.7471E-03 | -6.1015E-02 | 3.5168E-02 |
TABLE 12-1
| AAS noodle | C24 | C25 | C26 | C38 | C39 | C40 | C41 |
| S11 | 0.0000E+00 | 0.0000E+00 | 9.0584E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | 1.9541E-03 | 2.4367E-03 | -5.4795E-03 | 1.2473E-02 | -3.0775E-03 | 8.8214E-03 | 2.5060E-05 |
TABLE 12-2
| AAS noodle | C42 | C57 | C58 | C59 | C60 | C61 | C62 |
| S11 | -3.0225E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 1.6722E-02 |
| S12 | 6.9714E-03 | 6.6644E-03 | -1.7203E-03 | -1.1577E-03 | -3.5257E-03 | -1.7033E-03 | 4.1264E-04 |
TABLE 12-3
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 4. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 8A to 8C, the optical imaging lens according to embodiment 4 can achieve good imaging quality.
Example 5
An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10C. Fig. 9 shows a schematic structural diagram of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image plane S15.
The first lens element E1 has a negative refractive power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive refractive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has a negative refractive power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the optical imaging lens is 1.41mm, the total length TTL of the optical imaging lens is 5.40mm, a half ImgH of a diagonal length of an effective pixel area on the imaging surface S15 of the optical imaging lens is 3.05mm, a half HFOV of a maximum field angle of the optical imaging lens is 60.76 °, and an aperture value Fno of the optical imaging lens is 2.27.
Table 13 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of the radius of curvature, thickness/distance, and focal length are millimeters (mm). Tables 14-1 and 14-2 show high-order term coefficients that can be used for each rotationally symmetric aspherical mirror surface in example 5, wherein each rotationally symmetric aspherical mirror surface type can be defined by formula (1) given in example 1 above. Tables 15-1 to 15-3 show Zernike polynomial coefficients of non-rotationally symmetric aspherical surfaces that can be used in example 5, wherein the non-rotationally symmetric aspherical surface types can be defined by formulas (2), (3) given in example 1 above.
Watch 13
TABLE 14-1
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -1.4387E-03 | 7.1108E-04 | -3.2027E-04 | 1.2977E-04 | -4.6440E-05 | 1.1172E-05 | -8.3198E-07 |
| S2 | -4.0228E-05 | -2.0191E-05 | 5.1565E-05 | -3.7504E-05 | 1.4387E-05 | -3.7875E-06 | 5.6687E-07 |
| S3 | -2.1960E-06 | 8.0584E-07 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | -9.1225E-07 | -3.1696E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | -6.8193E-08 | -4.3897E-07 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | 1.9507E-05 | 7.6337E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | 3.8306E-05 | 9.2076E-06 | 1.8685E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | -1.3112E-04 | -3.6567E-05 | -8.5691E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S9 | 6.0904E-05 | -4.1967E-05 | 7.0808E-06 | -7.8680E-06 | 1.2471E-05 | 1.5311E-06 | -2.1682E-06 |
| S10 | 2.5714E-04 | 6.6794E-04 | -3.7516E-04 | -5.7438E-05 | -7.6039E-05 | 9.0643E-05 | -1.9236E-05 |
TABLE 14-2
| AAS noodle | C2 | C5 | C6 | C12 | C13 | C14 | C23 |
| S11 | -5.9715E-01 | 0.0000E+00 | -7.1374E-01 | 0.0000E+00 | 0.0000E+00 | -2.5149E-02 | 0.0000E+00 |
| S12 | -9.4634E-01 | 2.1415E-02 | -1.1763E+00 | 6.5120E-03 | -4.7619E-02 | -1.2127E-01 | -2.8920E-02 |
TABLE 15-1
| AAS noodle | C24 | C25 | C26 | C38 | C39 | C40 | C41 |
| S11 | 0.0000E+00 | 0.0000E+00 | 7.1769E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | 3.2666E-03 | 2.4367E-03 | -2.1408E-02 | -1.8505E-02 | 2.1455E-02 | 6.8832E-02 | 2.5060E-05 |
TABLE 15-2
| AAS noodle | C42 | C57 | C58 | C59 | C60 | C61 | C62 |
| S11 | -1.7479E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 2.1927E-03 |
| S12 | 8.8761E-03 | 3.9046E-02 | 3.7601E-02 | -1.1577E-03 | -8.3166E-03 | -1.1898E-02 | -1.8046E-02 |
Tables 15-3
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 5. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 10A to 10C, the optical imaging lens system according to embodiment 5 can achieve good imaging quality.
Example 6
An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12C. Fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image plane S15.
The first lens element E1 has a negative refractive power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive refractive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has a negative refractive power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive refractive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative refractive power, and has a concave object-side surface S11 and a concave image-side surface S12. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging plane S15.
In this example, the total effective focal length f of the optical imaging lens is 1.39mm, the total length TTL of the optical imaging lens is 5.36mm, a half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.05mm, a half HFOV of the maximum field angle of the optical imaging lens is 60.83 °, and the aperture value Fno of the optical imaging lens is 2.27.
Table 16 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of the radius of curvature, thickness/distance, and focal length are millimeters (mm). Tables 17-1 and 17-2 show the high-order term coefficients that can be used for each rotationally symmetric aspherical mirror surface in embodiment 6, wherein each rotationally symmetric aspherical mirror surface type can be defined by formula (1) given in embodiment 1 above. Tables 18-1 to 18-3 show Zernike polynomial coefficients of non-rotationally symmetric aspherical surfaces usable in example 6, wherein the non-rotationally symmetric aspherical surface types can be defined by formulas (2), (3) given in example 1 above.
TABLE 16
TABLE 17-1
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -1.4027E-03 | 7.2779E-04 | -3.1328E-04 | 1.3266E-04 | -4.5247E-05 | 1.1525E-05 | -3.0350E-07 |
| S2 | -3.9997E-05 | -2.1547E-05 | 5.2213E-05 | -3.6942E-05 | 1.4406E-05 | -3.7709E-06 | 4.7751E-07 |
| S3 | -2.4445E-06 | 6.8706E-07 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | -8.1484E-06 | -4.2687E-06 | 1.3402E-09 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | -8.5158E-09 | -6.9174E-07 | -6.2078E-07 | -7.1785E-08 | 4.2457E-07 | 6.1472E-07 | 6.0371E-07 |
| S6 | 1.8765E-05 | 7.3179E-06 | -8.9793E-08 | -1.4388E-08 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | 3.7734E-05 | 9.0381E-06 | 1.8279E-06 | -8.2431E-09 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | -3.4829E-05 | 1.0095E-05 | 7.6091E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S9 | 5.7216E-05 | -3.1866E-05 | 1.1904E-05 | -4.5807E-06 | 9.5319E-06 | 7.7061E-07 | -1.2175E-06 |
| S10 | 2.7743E-04 | 6.7233E-04 | -3.7450E-04 | -5.8847E-05 | -7.7018E-05 | 9.0536E-05 | -1.8761E-05 |
TABLE 17-2
| AAS noodle | C2 | C5 | C6 | C12 | C13 | C14 | C23 |
| S11 | -3.5983E-01 | 0.0000E+00 | -4.2100E-01 | 0.0000E+00 | 0.0000E+00 | 1.8484E-02 | 0.0000E+00 |
| S12 | -9.6282E-01 | -7.1135E-02 | -1.2203E+00 | 6.5120E-03 | -1.3216E-01 | -5.7967E-02 | -1.2878E-01 |
TABLE 18-1
| AAS noodle | C24 | C25 | C26 | C38 | C39 | C40 | C41 |
| S11 | 0.0000E+00 | 0.0000E+00 | 6.9495E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | -5.9566E-02 | 2.4367E-03 | -3.0976E-02 | -3.1058E-02 | 8.3397E-02 | 9.7923E-02 | 2.5060E-05 |
TABLE 18-2
| AAS noodle | C42 | C57 | C58 | C59 | C60 | C61 | C62 |
| S11 | -1.8567E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | -8.4129E-03 |
| S12 | 3.5316E-04 | 3.0233E-02 | 6.6824E-02 | -1.1577E-03 | -1.6020E-02 | -2.2801E-02 | -2.6377E-02 |
TABLE 18-3
Fig. 12A shows on-axis chromatic aberration curves of the optical imaging lens of embodiment 6, which represent deviation of convergence focuses of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 6. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 12A to 12C, the optical imaging lens according to embodiment 6 can achieve good imaging quality.
Example 7
An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14C. Fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image plane S15.
The first lens element E1 has a negative refractive power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive refractive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging plane S15.
In this example, the total effective focal length f of the optical imaging lens is 1.39mm, the total length TTL of the optical imaging lens is 5.50mm, a half ImgH of a diagonal length of an effective pixel area on an imaging surface S15 of the optical imaging lens is 3.05mm, a half HFOV of a maximum field angle of the optical imaging lens is 61.15 °, and an aperture value Fno of the optical imaging lens is 2.27.
Table 19 shows a basic parameter table of the optical imaging lens of embodiment 7, in which the units of the radius of curvature, thickness/distance, and focal length are millimeters (mm). Tables 20-1 and 20-2 show high-order term coefficients that can be used for each rotationally symmetric aspherical mirror surface in example 7, wherein each rotationally symmetric aspherical mirror surface type can be defined by formula (1) given in example 1 above. Tables 21-1 to 21-3 show Zernike polynomial coefficients of non-rotationally symmetric aspherical surfaces that can be used in example 7, wherein the non-rotationally symmetric aspherical surface types can be defined by formulas (2), (3) given in example 1 above.
Watch 19
TABLE 20-1
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -1.7563E-03 | 8.2848E-04 | -4.4099E-04 | 2.2644E-04 | -9.0782E-05 | 3.4938E-05 | -5.0439E-06 |
| S2 | -1.6383E-04 | -5.9800E-05 | 1.9002E-05 | -2.3035E-05 | 2.3079E-05 | -1.6321E-05 | 8.8834E-06 |
| S3 | -1.5610E-05 | 1.1510E-05 | -4.2029E-06 | 3.3123E-06 | -1.6248E-06 | 1.5009E-06 | -5.7639E-07 |
| S4 | 7.0440E-08 | 7.8059E-08 | -3.3660E-07 | 4.1666E-07 | -3.1512E-07 | 1.7798E-07 | -5.5221E-08 |
| S5 | -5.6425E-08 | 4.9108E-07 | 4.0475E-08 | -2.2509E-07 | -1.4033E-07 | -8.1809E-08 | 9.7315E-08 |
| S6 | 1.6875E-06 | -6.4022E-06 | 2.7018E-06 | -5.1844E-07 | 1.5967E-06 | -1.2029E-06 | 2.0101E-07 |
| S7 | -4.0827E-07 | -1.0864E-05 | 1.1746E-06 | 2.3755E-07 | 3.3708E-06 | 1.1408E-06 | 1.7229E-07 |
| S8 | -7.3691E-06 | -1.1428E-06 | -1.6930E-06 | 3.3172E-06 | -5.0550E-07 | 2.2679E-06 | -8.1587E-07 |
| S9 | 1.1404E-04 | -7.3727E-05 | 3.5230E-05 | 1.2566E-05 | 6.7544E-06 | -4.6150E-06 | 2.7893E-05 |
| S10 | -1.7839E-04 | -6.9048E-04 | -5.3746E-04 | 4.2248E-04 | 1.1100E-04 | 5.0026E-05 | -5.4467E-05 |
TABLE 20-2
| AAS noodle | C2 | C5 | C6 | C12 | C13 | C14 | C23 |
| S11 | -3.1400E-01 | 0.0000E+00 | -3.9295E-01 | 0.0000E+00 | 0.0000E+00 | -2.2483E-02 | 0.0000E+00 |
| S12 | -8.8465E-01 | 2.4101E-02 | -1.0396E+00 | 6.4607E-03 | -5.0032E-02 | 1.5336E-02 | -7.1349E-03 |
TABLE 21-1
| AAS noodle | C24 | C25 | C26 | C38 | C39 | C40 | C41 |
| S11 | 0.0000E+00 | 0.0000E+00 | 5.4136E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | -4.9211E-02 | 4.5208E-03 | -2.0255E-02 | -8.7934E-03 | 2.9505E-02 | 4.7094E-02 | 3.4736E-03 |
TABLE 21-2
| AAS noodle | C42 | C57 | C58 | C59 | C60 | C61 | C62 |
| S11 | -6.8495E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | -4.5207E-03 |
| S12 | -1.8313E-04 | 1.6074E-02 | 2.2820E-02 | -9.8008E-04 | -1.0214E-02 | -1.1325E-02 | -5.4505E-03 |
Tables 21 to 3
Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 7. Fig. 14C shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 14A to 14C, the optical imaging lens according to embodiment 7 can achieve good imaging quality.
In conclusion, examples 1 to 7 each satisfy the relationship shown in table 22.
TABLE 22
The present application also provides an imaging device whose 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 mobile phone. The imaging device is equipped with the optical imaging lens described above.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (22)
1. The optical imaging lens, in order from an object side to an image side along an optical axis, comprises:
a first lens having a negative optical power;
a second lens having positive optical power;
a third lens having a positive optical power;
a fourth lens having a focal power;
the fifth lens with positive focal power has a convex object-side surface and a convex image-side surface; and
a sixth lens having a negative optical power;
at least one of the first lens to the sixth lens has a non-rotationally symmetric aspherical mirror surface;
half of the maximum field angle of the optical imaging lens is satisfied by the HFOV: HFOV > 60 °;
the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens meet the following conditions: TTL/(f 1+ f 2) > 1.38;
the effective focal length f3 of the third lens and the entrance pupil diameter EPD of the optical imaging lens meet the following conditions: f3 × EPD < 1.8mm 2 ；
The curvature radius R9 of the object side surface of the fifth lens, the curvature radius R10 of the image side surface of the fifth lens and the total effective focal length f of the optical imaging lens meet the following conditions: f/(R9 + R10) is more than or equal to 0.36 and less than or equal to 0.73; and
the number of lenses having optical power of the optical imaging lens is six.
2. The optical imaging lens according to claim 1, wherein the half ImgH of the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens, the effective focal length f5 of the fifth lens, and the effective focal length f6 of the sixth lens satisfy: 0.49 < ImgH/(f 5-f 6) < 1.6.
3. The optical imaging lens according to claim 1, wherein the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens satisfy: f 2/(R3 + R4) is more than 0 and less than or equal to 1.52.
4. The optical imaging lens according to claim 1, wherein a distance SAG12 on the optical axis from an intersection point of an air space T12 of the first lens and the optical axis with the image side surface of the first lens to an effective radius vertex of the image side surface of the first lens satisfies: 0.5 < SAG12/T12 < 1.5.
5. The optical imaging lens according to claim 1, characterized in that a center thickness CT5 of the fifth lens on the optical axis and an edge thickness ET5 of the fifth lens satisfy: ET5/CT5 is less than or equal to 0.35.
6. The optical imaging lens according to claim 1, wherein a center thickness CT5 of the fifth lens on the optical axis, an air interval T23 of the second lens and the third lens on the optical axis, an air interval T34 of the third lens and the fourth lens on the optical axis, and an air interval T45 of the fourth lens and the fifth lens on the optical axis satisfy: 1 < CT 5/(T23 + T34+ T45) < 2.5.
7. The optical imaging lens according to claim 1, wherein a distance SAG31 on the optical axis from an intersection point of an object side surface of the third lens and the optical axis to an effective radius vertex of an object side surface of the third lens to a distance SAG61 on the optical axis from an intersection point of an object side surface of the sixth lens and the optical axis to an effective radius vertex of an object side surface of the sixth lens satisfies: -0.5 < SAG31/SAG61 < 0.
8. The optical imaging lens according to claim 1, wherein an air gap T12 between the first lens and the second lens on the optical axis and an effective semi-aperture DT31 of an object side surface of the third lens satisfy: 1 < T12/DT31 < 2.
9. The optical imaging lens according to claim 1, wherein an air space T56 on the optical axis of the fifth lens and the sixth lens and an air space on the optical axis of any adjacent two lenses of the first lens to the sixth lensThe sum of (sa) AT satisfies: 0mm 2 ＜T56×∑AT≤0.06mm 2 。
10. The optical imaging lens according to claim 1, wherein a center thickness CT3 of the third lens on the optical axis and an edge thickness ET3 of the third lens satisfy: ET3/CT3 is more than 0.3 and less than 0.6.
11. The optical imaging lens according to claim 1, wherein an effective semi-aperture diameter DT22 of the image side surface of the second lens and an effective semi-aperture diameter DT32 of the image side surface of the third lens satisfy: DT22/DT32 is less than or equal to 1.01.
12. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:
a first lens having a negative optical power;
a second lens having positive optical power;
a third lens having a positive optical power;
a fourth lens having an optical power;
a fifth lens with positive focal power, wherein the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; and
a sixth lens having a negative optical power;
at least one of the first to sixth lenses has a non-rotationally symmetric aspherical mirror surface;
half of the maximum field angle of the optical imaging lens is satisfied by the HFOV: HFOV > 60 °;
an air gap T12 between the first lens and the second lens on the optical axis and an effective semi-aperture DT31 of an object side surface of the third lens satisfy: T12/DT31 is more than 1 and less than 2;
the effective focal length f3 of the third lens and the entrance pupil diameter EPD of the optical imaging lens meet the following conditions: f3 × EPD < 1.8mm 2 ；
The curvature radius R9 of the object side surface of the fifth lens, the curvature radius R10 of the image side surface of the fifth lens and the total effective focal length f of the optical imaging lens meet the following conditions: f/(R9 + R10) is more than or equal to 0.36 and less than or equal to 0.73; and
the number of lenses having optical power of the optical imaging lens is six.
13. The optical imaging lens according to claim 12, wherein the effective semi-aperture DT22 of the image side surface of the second lens and the effective semi-aperture DT32 of the image side surface of the third lens satisfy: DT22/DT32 is less than or equal to 1.01.
14. The optical imaging lens according to claim 12, wherein the half ImgH of the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens, the effective focal length f5 of the fifth lens, and the effective focal length f6 of the sixth lens satisfy: imgH/(f 5-f 6) < 1.6 and is more than 0.49.
15. The optical imaging lens of claim 12, wherein the radius of curvature R3 of the object-side surface of the second lens, the radius of curvature R4 of the image-side surface of the second lens, and the effective focal length f2 of the second lens satisfy: f 2/(R3 + R4) is more than 0 and less than or equal to 1.52.
16. The optical imaging lens according to claim 12, wherein a distance SAG12 on the optical axis from an intersection point of an air space T12 of the first lens and the optical axis to an effective radius vertex of the image side surface of the first lens to the optical axis of the first lens satisfies: 0.5 < SAG12/T12 < 1.5.
17. The optical imaging lens according to claim 12, wherein a center thickness CT5 of the fifth lens on the optical axis and an edge thickness ET5 of the fifth lens satisfy: ET5/CT5 is less than or equal to 0.35.
18. The optical imaging lens of claim 12, wherein a center thickness CT5 of the fifth lens on the optical axis, an air interval T23 of the second lens and the third lens on the optical axis, an air interval T34 of the third lens and the fourth lens on the optical axis, and an air interval T45 of the fourth lens and the fifth lens on the optical axis satisfy: 1 < CT 5/(T23 + T34+ T45) < 2.5.
19. The optical imaging lens according to claim 12, wherein a distance SAG31 on the optical axis from an intersection point of an object side surface of the third lens and the optical axis to an effective radius vertex of an object side surface of the third lens to a distance SAG61 on the optical axis from an intersection point of an object side surface of the sixth lens and the optical axis to an effective radius vertex of an object side surface of the sixth lens satisfies: -0.5 < SAG31/SAG61 < 0.
20. The optical imaging lens according to claim 12, characterized in that a sum Σ AT of an air interval T56 of the fifth lens and the sixth lens on the optical axis and an air interval on the optical axis of any adjacent two lenses of the first lens to the sixth lens satisfies: 0mm 2 ＜T56×∑AT≤0.06mm 2 。
21. The optical imaging lens according to claim 12, characterized in that the center thickness CT3 of the third lens on the optical axis and the edge thickness ET3 of the third lens satisfy: ET3/CT3 is more than 0.3 and less than 0.6.
22. The optical imaging lens of claim 21, wherein the distance TTL, the effective focal length f1 of the first lens element and the effective focal length f2 of the second lens element on the optical axis from the object side surface of the first lens element to the imaging surface of the optical imaging lens satisfy: TTL/(f 1+ f 2) > 1.38.
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| CN114114627B (en) * | 2021-12-02 | 2024-04-19 | 浙江舜宇光学有限公司 | Optical lens group |
| CN114047605B (en) * | 2021-12-02 | 2024-04-19 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN114047606B (en) * | 2021-12-02 | 2024-04-19 | 浙江舜宇光学有限公司 | Photographic lens |
| CN114442280B (en) * | 2022-02-15 | 2023-09-22 | 浙江舜宇光学有限公司 | Imaging lens group |
| CN114879347B (en) * | 2022-07-01 | 2022-11-15 | 江西晶超光学有限公司 | Optical system, camera module and electronic equipment |
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| JP2016188895A (en) * | 2015-03-30 | 2016-11-04 | 日立マクセル株式会社 | Imaging lens system and imaging device |
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