CN112748553A - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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Publication number
CN112748553A
CN112748553A CN202110233238.9A CN202110233238A CN112748553A CN 112748553 A CN112748553 A CN 112748553A CN 202110233238 A CN202110233238 A CN 202110233238A CN 112748553 A CN112748553 A CN 112748553A
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Prior art keywords
lens
optical imaging
optical
imaging lens
satisfy
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CN202110233238.9A
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CN112748553B (en
Inventor
肖亮
戴付建
赵烈烽
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Zhejiang Sunny Optics Co Ltd
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Zhejiang Sunny Optics Co Ltd
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    • 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
    • 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
    • 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

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 a negative refractive power, an object side surface of which is a concave surface; a diaphragm; a second lens having an optical power; a third lens having a positive refractive power, an object side surface of which is concave; a fourth lens having an optical power; a fifth lens having optical power; and a sixth lens having a negative optical power. At least one mirror surface of the object side surface of the first lens to the image side surface of the sixth lens is an aspheric mirror surface; the Semi-FOV of the maximum field angle of the optical imaging lens and the distance SD between the diaphragm and the image side surface of the sixth lens on the optical axis satisfy that: 0.5mm < SD/tan (Semi-FOV) < 1.5 mm; and the curvature radius R4 of the image side surface of the second lens, the curvature radius R6 of the image side surface of the third lens and the total effective focal length f of the optical imaging lens satisfy: -5.5 < R4/f + R6/f < -2.5.

Description

Optical imaging lens
Technical Field
The application relates to the field of optical elements, in particular to an optical imaging lens.
Background
With the continuous development of mobile phone photography technology, ultra-wide-angle lenses are more and more favored by consumers due to the ultra-large viewing range, and meanwhile, the ultra-wide-angle lenses are also carried on mobile phones of various well-known brands. Compared with a common lens, the ultra-wide-angle lens can obtain a wider picture at the same position, and can enhance the depth feeling and the space feeling of the picture.
Currently, lens designers are gradually beginning to utilize the characteristics of large distortion (e.g., image distortion) of ultra-wide-angle lenses to study the possible unexpected shooting effect. For example, the super wide-angle lens can photograph an exaggerated elongation and enlargement effect, and can photograph special effects of small upper body and elongated lower body during portrait photographing, and the like, so as to meet the entertainment mood of the user. This also encourages lens designers to continually explore over ultra-wide angle lens designs in the direction of larger and wider field angles.
Disclosure of Invention
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 a negative refractive power, an object side surface of which is a concave surface; a diaphragm; a second lens having an optical power; a third lens having a positive refractive power, an object side surface of which is concave; a fourth lens having an optical power; a fifth lens having optical power; and a sixth lens having a negative optical power. At least one mirror surface of the object side surface of the first lens to the image side surface of the sixth lens is an aspherical mirror surface. The Semi-FOV of the maximum field angle of the optical imaging lens and the distance SD between the diaphragm and the image side surface of the sixth lens on the optical axis can satisfy the following conditions: 0.5mm < SD/tan (Semi-FOV) < 1.5 mm. The curvature radius R4 of the image side surface of the second lens, the curvature radius R6 of the image side surface of the third lens and the total effective focal length f of the optical imaging lens can satisfy the following conditions: -5.5 < R4/f + R6/f < -2.5.
In one embodiment, the effective focal length f1 of the first lens and the effective focal length f4 of the fourth lens may satisfy: f4/f1 is more than 1.0 and less than 4.5.
In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f2 of the second lens and the effective focal length f3 of the third lens may satisfy: 4.0 < f2/f + f3/f < 5.5.
In one embodiment, the effective focal length f5 of the fifth lens and the effective focal length f6 of the sixth lens satisfy: 1.0
mm-1＜|1/f5-1/f6|＜2.0mm-1。
In one embodiment, the radius of curvature R11 of the object-side surface of the sixth lens and the radius of curvature R12 of the image-side surface of the sixth lens may satisfy: 2.5 < R11/R12 < 4.0.
In one embodiment, the radius of curvature R1 of the object-side surface of the first lens in millimeters, the radius of curvature R2 of the image-side surface of the first lens in millimeters, and the total effective focal length f of the optical imaging lens in millimeters may satisfy: -4.0 < R2/R1-f < -3.0.
In one embodiment, a central thickness CT4 of the fourth lens on the optical axis, a central thickness CT5 of the fifth lens on the optical axis, and a central thickness CT6 of the sixth lens on the optical axis may satisfy: 1.0 < CT5/(CT4+ CT6) < 2.0.
In one embodiment, a separation distance T12 on the optical axis of the first lens and the second lens, a separation distance T23 on the optical axis of the second lens and the third lens, and a separation distance T34 on the optical axis of the third lens and the fourth lens may satisfy: 2.0 < T12/(T23+ T34) < 3.0.
In one embodiment, the central thickness CT6 of the sixth lens on the optical axis and the edge thickness ET6 of the sixth lens may satisfy: 2.0 < ET6/CT6 < 3.5.
In one embodiment, the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT21 of the object side surface of the second lens may satisfy: 2.0 < DT11/DT21 < 3.0.
In one embodiment, the maximum effective radius DT41 of the object-side surface of the fourth lens and the maximum effective radius DT61 of the object-side surface of the sixth lens may satisfy: 1.0 < DT61/DT41 < 2.0.
In one embodiment, the maximum field angle FOV of the optical imaging lens may satisfy: the FOV is more than or equal to 120 degrees.
Another 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 a negative refractive power, an object side surface of which is a concave surface; a diaphragm; a second lens having an optical power; a third lens having a positive refractive power, an object side surface of which is concave; a fourth lens having an optical power; a fifth lens having optical power; and a sixth lens having a negative optical power. At least one mirror surface of the object side surface of the first lens to the image side surface of the sixth lens is an aspherical mirror surface. The Semi-FOV of the maximum field angle of the optical imaging lens and the distance SD between the diaphragm and the image side surface of the sixth lens on the optical axis can satisfy the following conditions: 0.5mm < SD/tan (Semi-FOV) < 1.5 mm; and a separation distance T12 on the optical axis of the first lens and the second lens, a separation distance T23 on the optical axis of the second lens and the third lens, and a separation distance T34 on the optical axis of the third lens and the fourth lens may satisfy: 2.0 < T12/(T23+ T34) < 3.0.
In one embodiment, the effective focal length f1 of the first lens and the effective focal length f4 of the fourth lens may satisfy: f4/f1 is more than 1.0 and less than 4.5.
In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f2 of the second lens and the effective focal length f3 of the third lens may satisfy: 4.0 < f2/f + f3/f < 5.5.
In one embodiment, the effective focal length f5 of the fifth lens and the effective focal length f6 of the sixth lens satisfy: 1.0mm-1＜|1/f5-1/f6|＜2.0mm-1。
In one embodiment, the radius of curvature R11 of the object-side surface of the sixth lens and the radius of curvature R12 of the image-side surface of the sixth lens may satisfy: 2.5 < R11/R12 < 4.0.
In one embodiment, the radius of curvature R1 of the object-side surface of the first lens in millimeters, the radius of curvature R2 of the image-side surface of the first lens in millimeters, and the total effective focal length f of the optical imaging lens in millimeters may satisfy: -4.0 < R2/R1-f < -3.0.
In one embodiment, a central thickness CT4 of the fourth lens on the optical axis, a central thickness CT5 of the fifth lens on the optical axis, and a central thickness CT6 of the sixth lens on the optical axis may satisfy: 1.0 < CT5/(CT4+ CT6) < 2.0.
In one embodiment, the central thickness CT6 of the sixth lens on the optical axis and the edge thickness ET6 of the sixth lens may satisfy: 2.0 < ET6/CT6 < 3.5.
In one embodiment, the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT21 of the object side surface of the second lens may satisfy: 2.0 < DT11/DT21 < 3.0.
In one embodiment, the maximum effective radius DT41 of the object-side surface of the fourth lens and the maximum effective radius DT61 of the object-side surface of the sixth lens may satisfy: 1.0 < DT61/DT41 < 2.0.
In one embodiment, the maximum field angle FOV of the optical imaging lens may satisfy: the FOV is more than or equal to 120 degrees.
The optical imaging lens adopts a plurality of lenses (for example, six lenses), and has at least one beneficial effect of ultra-wide angle, small size, high imaging quality and the like 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.
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 structural view of an optical imaging lens according to embodiment 1 of the present application;
fig. 2A to 2C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 1, respectively;
fig. 3 is a schematic structural view showing an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 2, respectively;
fig. 5 is a schematic structural view showing an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 3, respectively;
fig. 7 is a schematic structural view showing an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 4, respectively;
fig. 9 is a schematic structural view showing an optical imaging lens according to embodiment 5 of the present application;
fig. 10A to 10C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 5, respectively;
fig. 11 is a schematic structural view showing an optical imaging lens according to embodiment 6 of the present application; and
fig. 12A to 12C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 6, respectively.
Detailed Description
For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that 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 a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The features, principles, and other aspects of the present application are described in detail below.
An optical imaging lens according to an exemplary embodiment of the present application may include 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 adjacent two lenses of the first lens to the sixth lens can have a spacing distance therebetween.
In an exemplary embodiment, the first lens may have a negative optical power, and the object side surface thereof may be concave; the second lens may have a positive or negative optical power; the third lens can have positive focal power, and the object side surface of the third lens can be concave; the fourth lens may have a positive power or a negative power; the fifth lens may have a positive power or a negative power; and the sixth lens may have a negative optical power.
In an exemplary embodiment, an optical imaging lens according to the present application further includes a stop disposed between the object side and the first lens. The optical imaging lens according to the present application can satisfy: 0.5mm < SD/tan (Semi-FOV) < 1.5mm, wherein the Semi-FOV is half of the maximum field angle of the optical imaging lens, and the SD is the distance between the diaphragm and the image side surface of the sixth lens on the optical axis. More specifically, SD and Semi-FOV further satisfy: 1.0mm < SD/tan (Semi-FOV) < 1.5 mm. The requirement that 0.5mm < SD/tan (Semi-FOV) < 1.5mm is satisfied, which is beneficial to ensuring that the lens can obtain a larger field angle under the condition that the total length is smaller.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1.0 < f4/f1 < 4.5, wherein f1 is the effective focal length of the first lens and f4 is the effective focal length of the fourth lens. More specifically, f4 and f1 may further satisfy: 1.3 < f4/f1 < 4.2. The requirement that f4/f1 is more than 1.0 and less than 4.5 is met, so that the optical imaging lens is favorable for balancing aberration better and improving the resolution power of the lens.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 4.0 < f2/f + f3/f < 5.5, where f is the total effective focal length of the optical imaging lens, f2 is the effective focal length of the second lens, and f3 is the effective focal length of the third lens. More specifically, f2, f3, and f further satisfy: 4.3 < f2/f + f3/f < 5.5. The requirement that f2/f + f3/f is more than 4.0 and less than 5.5 is met, the second lens and the third lens contribute positive third-order spherical aberration and negative fifth-order spherical aberration reasonably so as to balance negative third-order spherical aberration and positive fifth-order spherical aberration generated by other lenses, so that the lens has smaller spherical aberration, and the field of view on the lens axis has good imaging quality.
In an exemplary embodimentIn the formula, the optical imaging lens according to the present application can satisfy: 1.0mm-1＜|1/f5-1/f6|＜2.0mm-1Where f5 is the effective focal length of the fifth lens and f6 is the effective focal length of the sixth lens. More specifically, f5 and f6 may further satisfy: 1.2mm-1＜|1/f5-1/f6|＜1.6mm-1. Satisfies the condition of 1.0mm-1＜|1/f5-1/f6|＜2.0mm-1The size of the lens can be effectively reduced, and the spherical aberration contribution amount of the fifth lens and the sixth lens can be controlled within a reasonable range, so that the lens can obtain better imaging quality.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 2.5 < R11/R12 < 4.0, wherein R11 is a radius of curvature of an object-side surface of the sixth lens, and R12 is a radius of curvature of an image-side surface of the sixth lens. More specifically, R11 and R12 may further satisfy: 2.5 < R11/R12 < 3.9. Satisfying 2.5 < R11/R12 < 4.0, the ghost image formed by total reflection inside the sixth lens can be reduced.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: -4.0 < R2/R1-f < -3.0, wherein R1 is the radius of curvature of the object-side surface of the first lens in millimeters, R2 is the radius of curvature of the image-side surface of the first lens in millimeters, and f is the total effective focal length of the optical imaging lens in millimeters. More specifically, R2, R1, and f further may satisfy: -3.7 < R2/R1-f < -3.0. Satisfy-4.0 < R2/R1-f < -3.0, can both reduce the size of the lens effectively, make the focal power of the lens obtain the rational distribution, can correct the aberration that the back lens produces.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: -5.5 < R4/f + R6/f < -2.5, wherein R4 is the radius of curvature of the image-side surface of the second lens, R6 is the radius of curvature of the image-side surface of the third lens, and f is the total effective focal length of the optical imaging lens. More specifically, R4, R6, and f further may satisfy: -5.2 < R4/f + R6/f < -2.5. The optical lens meets the requirement that R4/f + R6/f is less than-2.5 which is more than-5.5, is favorable for reducing the sensitivity of the lens, and is favorable for realizing the characteristics of large field angle, large aperture, high resolution and the like of the imaging lens.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1.0 < CT5/(CT4+ CT6) < 2.0, where CT4 is the central thickness of the fourth lens on the optical axis, CT5 is the central thickness of the fifth lens on the optical axis, and CT6 is the central thickness of the sixth lens on the optical axis. More specifically, CT5, CT4, and CT6 may further satisfy: 1.4 < CT5/(CT4+ CT6) < 1.9. The requirements of 1.0 < CT5/(CT4+ CT6) < 2.0 are met, the fourth lens to the sixth lens are easy to be subjected to injection molding, the processability of the imaging lens is improved, and the imaging lens is ensured to have better imaging quality.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 2.0 < T12/(T23+ T34) < 3.0, where T12 is a separation distance of the first lens and the second lens on the optical axis, T23 is a separation distance of the second lens and the third lens on the optical axis, and T34 is a separation distance of the third lens and the fourth lens on the optical axis. More specifically, T12, T23, and T34 may further satisfy: 2.0 < T12/(T23+ T34) < 2.9. The requirements of 2.0 < T12/(T23+ T34) < 3.0 are met, the assembly stability of each lens is favorably improved, the consistency of batch production is favorably improved, and the production yield of the optical imaging lens is favorably improved.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 2.0 < ET6/CT6 < 3.5, wherein CT6 is the central thickness of the sixth lens on the optical axis and ET6 is the edge thickness of the sixth lens. More specifically, ET6 and CT6 further satisfy: 2.3 < ET6/CT6 < 3.2. The requirements that ET6/CT6 is more than 2.0 and less than 3.5 are met, the processing difficulty of the sixth lens can be reduced, the included angle between the principal ray and the optical axis when the principal ray is incident on the image plane can be reduced, and the relative illumination of the image plane can be improved.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 2.0 < DT11/DT21 < 3.0, where DT11 is the maximum effective radius of the object-side surface of the first lens and DT21 is the maximum effective radius of the object-side surface of the second lens. More specifically, DT11 and DT21 further satisfy: 2.1 < DT11/DT21 < 2.6. The requirement of DT11/DT21 being more than 2.0 and less than 3.0 is met, and the stability of lens assembly is facilitated.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1.0 < DT61/DT41 < 2.0, where DT41 is the maximum effective radius of the object-side surface of the fourth lens and DT61 is the maximum effective radius of the object-side surface of the sixth lens. More specifically, DT61 and DT41 further satisfy: 1.3 < DT61/DT41 < 1.9. The optical imaging lens meets the requirement that DT61/DT41 is more than 1.0 and less than 2.0, is favorable for the structural compactness of the optical imaging lens, ensures the stability of the assembly process and avoids overlarge deflection of the object side light rays of the fourth lens and the sixth lens.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: the FOV is more than or equal to 120 degrees, wherein the FOV is the maximum field angle of the optical imaging lens. The FOV is more than or equal to 120 degrees, so that the lens has a larger field angle, and larger ultra-wide-angle photography is facilitated.
In an exemplary embodiment, an optical imaging lens according to the present application further includes a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on an imaging 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 and can be suitable for portable electronic products. The optical imaging lens configured as described above can have features such as an ultra wide angle, a small size, good imaging quality, and the like.
In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, 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 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 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 aspheric mirror surface. Optionally, each of the first, second, third, fourth, fifth, and sixth lenses has an object-side surface and an image-side surface that are aspheric mirror surfaces.
However, it will be appreciated by those skilled in the art that the number of lenses constituting an optical imaging lens may be varied to achieve the various results and advantages described in the present specification without departing from the claimed subject matter. For example, although 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 stop STO, a second lens E2, 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 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 convex 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 negative 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 concave 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. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface 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).
Figure BDA0002959484950000071
Figure BDA0002959484950000081
TABLE 1
In the present example, the total effective focal length f of the optical imaging lens is 1.67mm, 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 4.51mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S15 of the optical imaging lens is 2.40mm, and the half Semi-FOV of the maximum angle of view of the optical imaging lens is 62.9 °.
In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 through the sixth lens E6 are aspheric surfaces, and the surface shape x of each aspheric lens can be defined by, but is not limited to, the following aspheric surface formula:
Figure BDA0002959484950000082
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 being 1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1 to S12 used in example 14、A6、A8、A10、A12、A14、A16、A18And A20。
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 5.5203E-01 -5.7896E-02 8.7461E-03 -3.3244E-03 9.9835E-04 -8.5529E-05 1.0264E-04 -1.2034E-05 3.4059E-06
S2 2.2889E-01 6.9335E-03 3.6939E-03 -4.2930E-04 -3.7971E-04 -2.4326E-04 -1.2246E-04 -4.4669E-05 -1.3030E-05
S3 -3.7202E-03 -5.9381E-04 2.7792E-05 6.1021E-05 2.1636E-05 4.2799E-06 4.8360E-07 1.7137E-06 6.5932E-07
S4 7.7676E-01 -7.2203E-03 5.2284E-02 -4.1835E-02 1.0568E-02 -1.3075E-02 1.5140E-02 -1.4443E-03 5.5966E-03
S5 2.7901E-02 -3.2504E-03 2.0000E-03 -1.0305E-03 2.8570E-04 1.5390E-03 -2.8824E-04 2.7064E-04 -7.9069E-04
S6 -6.8231E-02 5.2311E-04 -1.5558E-03 2.7460E-04 1.4748E-04 9.9832E-05 2.3284E-05 6.1889E-06 -9.3891E-07
S7 -1.6245E-01 -5.1558E-03 5.6199E-04 -8.8483E-04 1.1830E-03 4.3453E-04 3.4702E-04 8.8931E-05 3.9515E-05
S8 -1.3268E-01 1.6311E-02 -2.7920E-03 5.3902E-04 4.3091E-04 1.2376E-04 7.5358E-05 8.1252E-06 5.3125E-06
S9 1.2458E-01 -1.9053E-02 -2.4543E-03 -1.4755E-03 -7.0179E-04 -3.9025E-04 3.3368E-05 -7.7682E-05 2.4253E-05
S10 6.9783E-01 -3.6306E-03 4.0332E-03 -1.4267E-02 -6.4524E-04 -9.4464E-05 1.0971E-03 3.7888E-04 1.9140E-04
S11 -1.5766E+00 2.7640E-01 -1.3967E-02 9.1980E-03 -8.6124E-03 2.8504E-03 3.2862E-03 1.5187E-03 3.5600E-04
S12 -1.1423E+00 2.0114E-01 -6.5032E-02 3.6536E-02 -7.4845E-03 5.0128E-03 -1.9716E-03 3.9142E-04 -3.8368E-04
TABLE 2
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 a meridional field curvature and a 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 stop STO, a second lens E2, 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 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 convex 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 negative 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 concave 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. Filter E7 has an object side S13 and an image side 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 1.65mm, the total length TTL of the optical imaging lens is 4.65mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 of the optical imaging lens is 2.40mm, and the half Semi-FOV of the maximum field angle of the optical imaging lens is 68.8 °.
Table 3 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 all millimeters (mm). Table 4 shows high-order term coefficients that can be used for each aspherical mirror surface in example 2, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Figure BDA0002959484950000091
Figure BDA0002959484950000101
TABLE 3
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 5.5024E-01 -5.1736E-02 1.0939E-02 -2.8848E-03 1.0214E-03 -1.2978E-04 1.1570E-04 -6.5544E-06 1.0459E-05
S2 2.2139E-01 8.3054E-03 4.3796E-03 -5.9167E-05 -1.8083E-04 -1.4909E-04 -5.8633E-05 -1.4948E-05 -8.0782E-07
S3 -4.1499E-03 -3.7998E-04 -3.7737E-07 2.4872E-05 1.5792E-06 1.6438E-06 9.0358E-07 2.0600E-06 -1.1803E-06
S4 6.3512E-01 2.1082E-02 4.2614E-02 -3.7757E-02 8.4932E-03 -1.1922E-02 1.4427E-02 -9.9488E-04 5.2949E-03
S5 8.8513E-02 -6.3879E-03 5.9258E-03 -3.2301E-03 1.2157E-03 9.0584E-04 -4.8231E-05 2.5581E-04 -9.3276E-04
S6 -6.9759E-02 3.6822E-03 -1.2363E-03 1.0152E-04 6.7590E-06 6.5339E-06 2.7266E-06 -2.9012E-06 1.6179E-06
S7 -1.6799E-01 -2.8764E-03 1.1901E-03 -1.3039E-03 4.6166E-04 -1.0240E-04 6.2729E-05 -1.5871E-05 1.0475E-05
S8 -1.3878E-01 1.4277E-02 -2.8789E-03 1.8848E-05 4.0512E-04 -2.2694E-04 8.3245E-05 -3.0634E-05 8.1004E-06
S9 1.1797E-01 -1.8944E-02 -3.7460E-04 -7.4528E-04 -3.6544E-04 -4.6290E-04 1.6913E-04 -1.2768E-04 2.9015E-05
S10 6.4378E-01 -1.3023E-02 1.1500E-02 -1.3195E-02 -3.2236E-03 -1.5024E-03 1.0222E-03 5.3935E-04 2.1987E-04
S11 -1.6073E+00 2.5838E-01 5.1803E-03 2.0227E-02 -4.1965E-03 5.0653E-03 4.3222E-03 1.3120E-03 6.6560E-05
S12 -1.1619E+00 1.7006E-01 -7.6213E-02 3.4041E-02 -6.9579E-03 6.7557E-03 -5.9164E-04 8.8974E-04 -1.1920E-04
TABLE 4
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 stop STO, a second lens E2, 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 concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a concave object-side surface S3 and a convex 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 negative 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. Filter E7 has an object side S13 and an image side 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 1.66mm, the total length TTL of the optical imaging lens is 4.85mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 of the optical imaging lens is 2.40mm, and the half Semi-FOV of the maximum field angle of the optical imaging lens is 68.5 °.
Table 5 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 all millimeters (mm). Table 6 shows high-order term coefficients that can be used for each aspherical mirror surface in example 3, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Figure BDA0002959484950000111
TABLE 5
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 5.6133E-01 -5.5272E-02 9.0638E-03 -4.4077E-03 6.8442E-04 -2.6479E-04 1.1122E-04 -5.3686E-06 1.3735E-05
S2 2.3308E-01 1.3136E-02 5.9456E-03 1.1900E-04 -5.1489E-04 -4.4070E-04 -2.7600E-04 -1.0460E-04 -3.8785E-05
S3 -6.9773E-03 -6.1474E-05 1.0144E-04 5.5389E-05 2.0313E-05 1.3337E-05 1.4567E-05 1.5166E-05 7.1229E-06
S4 6.3047E-01 2.1940E-02 4.2300E-02 -3.7631E-02 8.4354E-03 -1.1885E-02 1.4405E-02 -9.8050E-04 5.2853E-03
S5 9.1001E-02 -6.8998E-03 6.0923E-03 -3.3033E-03 1.2524E-03 8.8503E-04 -3.5319E-05 2.4765E-04 -9.2730E-04
S6 -6.9397E-02 1.5688E-03 -2.3635E-04 5.3000E-05 5.1429E-05 -3.4818E-06 4.9130E-06 -2.2953E-06 9.6747E-07
S7 -1.7412E-01 5.2945E-03 8.8011E-06 -1.2041E-04 1.7232E-04 3.0770E-05 2.6869E-06 -5.0742E-07 -7.9188E-07
S8 -1.4835E-01 5.6158E-03 -1.9060E-03 -6.0143E-05 5.4994E-04 -1.7858E-04 7.1777E-05 -1.6863E-05 5.8629E-06
S9 8.6144E-02 -1.1889E-02 1.8203E-03 -6.7961E-04 -3.3434E-05 -2.6164E-04 1.5415E-04 -7.0324E-05 2.7151E-05
S10 6.2459E-01 -1.3621E-02 2.0010E-02 -9.2423E-03 -1.3270E-03 -1.5297E-03 3.8335E-04 1.3768E-04 1.2464E-04
S11 -1.6282E+00 2.0111E-01 -9.1148E-03 3.4157E-02 6.2976E-03 5.5188E-03 2.4858E-03 7.9530E-04 9.4426E-05
S12 -1.1426E+00 1.8948E-01 -7.0192E-02 3.5512E-02 -5.3063E-03 6.7263E-03 -6.7971E-04 7.2706E-04 -3.1868E-04
TABLE 6
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which represents 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 structural 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 stop STO, a second lens E2, 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 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 convex 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 negative 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. Filter E7 has an object side S13 and an image side 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 1.67mm, the total length TTL of the optical imaging lens is 4.81mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 of the optical imaging lens is 2.40mm, and the half Semi-FOV of the maximum field angle of the optical imaging lens is 69.8 °.
Table 7 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 all millimeters (mm). Table 8 shows high-order term coefficients that can be used for each aspherical mirror surface in example 4, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Figure BDA0002959484950000121
Figure BDA0002959484950000131
TABLE 7
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 5.4333E-01 -5.4295E-02 1.0083E-02 -3.0599E-03 9.8847E-04 -1.3154E-04 1.1348E-04 -9.7554E-06 1.1297E-05
S2 2.2176E-01 1.0871E-02 4.8417E-03 6.7107E-05 -2.0434E-04 -1.8065E-04 -7.6753E-05 -2.5887E-05 -4.3526E-06
S3 -3.5956E-03 -3.4814E-04 2.2473E-05 2.2067E-05 -3.1514E-06 -1.5114E-06 2.3693E-07 1.6748E-06 -2.7030E-07
S4 6.3358E-01 2.1376E-02 4.2511E-02 -3.7715E-02 8.4707E-03 -1.1909E-02 1.4420E-02 -9.9001E-04 5.2916E-03
S5 8.9394E-02 -6.5640E-03 5.9851E-03 -3.2556E-03 1.2287E-03 8.9859E-04 -4.3834E-05 2.5295E-04 -9.3096E-04
S6 -6.5482E-02 1.8013E-03 -3.2699E-04 5.1983E-05 7.0514E-05 -1.5920E-06 5.3923E-06 -3.7114E-06 1.3237E-06
S7 -1.7782E-01 2.4730E-03 -1.0340E-04 4.5417E-05 2.2210E-04 3.9439E-05 1.6650E-06 -2.9247E-06 -1.3090E-06
S8 -1.4222E-01 8.2350E-03 -1.0132E-03 6.8936E-05 4.1922E-04 -1.4549E-04 7.9565E-05 -2.6284E-05 3.2114E-06
S9 8.3438E-02 -1.2821E-02 1.3472E-03 -1.0167E-03 -8.3597E-05 -2.9143E-04 1.6181E-04 -9.3062E-05 3.1339E-05
S10 6.2018E-01 -9.4829E-03 1.7640E-02 -8.8189E-03 -2.1995E-03 -1.7690E-03 4.0659E-04 2.8139E-04 1.7292E-04
S11 -1.6072E+00 2.2748E-01 7.5476E-03 2.6178E-02 -2.0391E-03 4.4441E-03 4.1764E-03 1.5988E-03 2.4592E-04
S12 -1.1309E+00 1.7909E-01 -8.8523E-02 3.1721E-02 -7.9857E-03 7.7345E-03 -8.0473E-04 8.5437E-04 -3.2997E-04
TABLE 8
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 stop STO, a second lens E2, 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 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 convex 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 negative 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 concave 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. Filter E7 has an object side S13 and an image side 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 1.71mm, the total length TTL of the optical imaging lens is 4.82mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 of the optical imaging lens is 2.40mm, and the half Semi-FOV of the maximum field angle of the optical imaging lens is 69.7 °.
Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 10 shows high-order term coefficients that can be used for each aspherical mirror surface in example 5, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Figure BDA0002959484950000141
TABLE 9
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 5.5541E-01 -5.2720E-02 9.1123E-03 -3.3575E-03 7.2112E-04 -1.5378E-04 9.5995E-05 -1.3251E-06 4.8121E-06
S2 2.2634E-01 1.3787E-02 5.4813E-03 2.4657E-04 -3.0702E-04 -2.8948E-04 -1.4473E-04 -5.0815E-05 -9.2652E-06
S3 -3.2801E-03 -3.2534E-04 5.6675E-05 4.4692E-05 -3.4520E-06 -3.8511E-06 -5.7752E-07 1.8553E-06 -5.2211E-07
S4 6.5043E-01 1.8022E-02 4.3642E-02 -3.8197E-02 8.7154E-03 -1.2046E-02 1.4502E-02 -1.0434E-03 5.3276E-03
S5 7.9802E-02 -4.6465E-03 5.3429E-03 -2.9766E-03 1.0882E-03 9.7773E-04 -9.1987E-05 2.8388E-04 -9.5200E-04
S6 -6.8850E-02 1.6373E-03 -2.0614E-04 -5.1666E-05 4.8473E-05 3.7967E-07 6.9241E-06 -4.3263E-06 1.2147E-06
S7 -1.8075E-01 -7.0856E-04 1.5925E-04 -2.6802E-04 1.8887E-04 8.5488E-05 1.9892E-05 -7.8956E-07 1.1288E-06
S8 -1.1399E-01 -1.2099E-04 6.9694E-04 8.2534E-04 8.3487E-04 -6.7277E-05 2.4079E-04 2.1186E-05 5.4840E-05
S9 1.0255E-01 -1.7140E-02 2.0511E-03 -6.1288E-04 -3.3053E-04 -2.1489E-04 1.3119E-04 -9.3748E-05 2.5473E-05
S10 5.9652E-01 -8.4548E-03 2.0536E-02 -7.6371E-03 -1.4830E-03 -2.1111E-03 2.0341E-04 2.2051E-04 1.8049E-04
S11 -1.5577E+00 2.7948E-01 -2.0578E-02 1.9824E-02 -2.5290E-03 5.7453E-03 4.4007E-03 1.0002E-03 -1.5141E-04
S12 -1.1046E+00 2.0003E-01 -9.1752E-02 3.7631E-02 -9.7485E-03 7.4594E-03 -1.1731E-03 7.7061E-04 -2.7316E-04
Watch 10
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 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 stop STO, a second lens E2, 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 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 convex 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 negative 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. Filter E7 has an object side S13 and an image side 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 1.67mm, the total length TTL of the optical imaging lens is 4.71mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 of the optical imaging lens is 2.40mm, and the half Semi-FOV of the maximum field angle of the optical imaging lens is 69.0 °.
Table 11 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 12 shows high-order term coefficients that can be used for each aspherical mirror surface in example 6, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Figure BDA0002959484950000151
TABLE 11
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 5.4905E-01 -5.1527E-02 1.0893E-02 -2.8385E-03 1.0129E-03 -1.2941E-04 1.1507E-04 -8.6152E-06 1.1708E-05
S2 2.2070E-01 8.9335E-03 4.5471E-03 5.8614E-05 -1.2622E-04 -1.2089E-04 -4.2140E-05 -9.0561E-06 9.5814E-07
S3 -4.1149E-03 -3.8097E-04 -1.6910E-05 1.8910E-05 -4.1507E-07 7.8763E-07 1.0837E-07 2.4603E-06 -1.0952E-06
S4 6.3683E-01 2.0740E-02 4.2729E-02 -3.7807E-02 8.5181E-03 -1.1936E-02 1.4435E-02 -1.0003E-03 5.2985E-03
S5 8.7538E-02 -6.1921E-03 5.8601E-03 -3.2017E-03 1.2014E-03 9.1389E-04 -5.3138E-05 2.5897E-04 -9.3499E-04
S6 -6.9743E-02 3.8674E-03 -1.1374E-03 9.9065E-05 -3.0716E-06 6.3023E-06 1.5201E-06 -2.0059E-06 1.1315E-06
S7 -1.6660E-01 -2.6879E-03 1.0842E-03 -1.1221E-03 4.3055E-04 -9.0484E-05 5.4466E-05 -1.2092E-05 8.4144E-06
S8 -1.4153E-01 1.3524E-02 -2.6425E-03 1.5401E-04 4.3492E-04 -2.1933E-04 8.2592E-05 -2.4722E-05 5.3341E-06
S9 1.0081E-01 -1.8086E-02 2.9904E-04 -6.1588E-04 -1.5432E-04 -4.1561E-04 1.9480E-04 -1.1419E-04 3.1109E-05
S10 6.3202E-01 -1.4586E-02 1.2434E-02 -1.0921E-02 -2.4715E-03 -1.4409E-03 6.4146E-04 2.8828E-04 1.4248E-04
S11 -1.6096E+00 2.5134E-01 1.3808E-02 2.4124E-02 -1.7244E-03 6.1967E-03 5.0929E-03 1.6581E-03 1.8830E-04
S12 -1.1629E+00 1.6909E-01 -8.2359E-02 3.3203E-02 -7.8429E-03 6.8819E-03 -6.7683E-04 9.8534E-04 -1.6284E-04
TABLE 12
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of the convergent focal points 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.
In summary, examples 1 to 6 each satisfy the relationship shown in table 13.
Conditions/examples 1 2 3 4 5 6
SD/tan(Semi-FOV)(mm) 1.40 1.12 1.19 1.12 1.14 1.13
f4/f1 2.35 3.78 2.08 1.44 4.13 3.43
f/EPD 2.28 2.28 2.28 2.28 2.28 2.28
f2/f+f3/f 4.85 5.48 4.69 4.52 4.51 5.49
|1/f5-1/f6|(mm-1) 1.32 1.36 1.36 1.35 1.42 1.37
R11/R12 2.58 2.87 2.87 2.89 3.80 3.06
R2/R1-f -3.59 -3.38 -3.13 -3.24 -3.32 -3.35
R4/f+R6/f -5.12 -3.70 -2.52 -2.91 -2.86 -3.70
CT5/(CT4+CT6) 1.82 1.72 1.76 1.48 1.76 1.72
T12/(T23+T34) 2.67 2.76 2.12 2.42 2.18 2.77
ET6/CT6 2.44 2.59 2.75 2.78 3.13 2.65
DT11/DT21 2.22 2.15 2.52 2.20 2.07 2.16
DT61/DT41 1.84 1.65 1.49 1.74 1.42 1.62
Watch 13
The present application also provides an imaging device whose electron photosensitive element may be a photo-coupled device (CCD) or a complementary metal oxide semiconductor device (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 (10)

1. 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 refractive power, an object side surface of which is a concave surface;
a diaphragm;
a second lens having an optical power;
a third lens having a positive refractive power, an object side surface of which is concave;
a fourth lens having an optical power;
a fifth lens having optical power; and
a sixth lens having a negative optical power;
at least one mirror surface of the object side surface of the first lens to the image side surface of the sixth lens is an aspheric mirror surface;
a half Semi-FOV of the maximum field angle of the optical imaging lens and a distance SD between the diaphragm and the image side surface of the sixth lens on the optical axis satisfy that: 0.5mm < SD/tan (Semi-FOV) < 1.5 mm; and
the radius of curvature R4 of the image side surface of the second lens, the radius of curvature R6 of the image side surface of the third lens and the total effective focal length f of the optical imaging lens satisfy: -5.5 < R4/f + R6/f < -2.5.
2. The optical imaging lens of claim 1, wherein the effective focal length f1 of the first lens and the effective focal length f4 of the fourth lens satisfy: f4/f1 is more than 1.0 and less than 4.5.
3. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens, the effective focal length f2 of the second lens and the effective focal length f3 of the third lens satisfy: 4.0 < f2/f + f3/f < 5.5.
4. The optical imaging lens of claim 1, characterized in that the effective focal length f5 of the fifth lens and the sixth lensThe effective focal length f6 satisfies: 1.0mm-1＜|1/f5-1/f6|＜2.0mm-1。
5. The optical imaging lens of claim 1, wherein the radius of curvature R11 of the object-side surface of the sixth lens and the radius of curvature R12 of the image-side surface of the sixth lens satisfy: 2.5 < R11/R12 < 4.0.
6. The optical imaging lens of claim 1, wherein the radius of curvature in millimeters of the object-side surface of the first lens, R1, the radius of curvature in millimeters of the image-side surface of the first lens, R2, and the total effective focal length f of the optical imaging lens in millimeters satisfy: -4.0 < R2/R1-f < -3.0.
7. The optical imaging lens according to claim 1, wherein a center thickness CT4 of the fourth lens on the optical axis, a center thickness CT5 of the fifth lens on the optical axis, and a center thickness CT6 of the sixth lens on the optical axis satisfy: 1.0 < CT5/(CT4+ CT6) < 2.0.
8. The optical imaging lens according to claim 1, wherein a separation distance T12 on the optical axis of the first lens and the second lens, a separation distance T23 on the optical axis of the second lens and the third lens, and a separation distance T34 on the optical axis of the third lens and the fourth lens satisfy: 2.0 < T12/(T23+ T34) < 3.0.
9. The optical imaging lens of claim 1, wherein a center thickness CT6 of the sixth lens on the optical axis and an edge thickness ET6 of the sixth lens satisfy: 2.0 < ET6/CT6 < 3.5.
10. 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 refractive power, an object side surface of which is a concave surface;
a diaphragm;
a second lens having an optical power;
a third lens having a positive refractive power, an object side surface of which is concave;
a fourth lens having an optical power;
a fifth lens having optical power; and
a sixth lens having a negative optical power;
at least one mirror surface of the object side surface of the first lens to the image side surface of the sixth lens is an aspheric mirror surface;
a half Semi-FOV of the maximum field angle of the optical imaging lens and a distance SD between the diaphragm and the image side surface of the sixth lens on the optical axis satisfy that: 0.5mm < SD/tan (Semi-FOV) < 1.5 mm; and
a separation distance T12 on the optical axis of the first lens and the second lens, a separation distance T23 on the optical axis of the second lens and the third lens, and a separation distance T34 on the optical axis of the third lens and the fourth lens satisfy: 2.0 < T12/(T23+ T34) < 3.0.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113433665A (en) * 2021-07-12 2021-09-24 浙江舜宇光学有限公司 Optical imaging lens
WO2024061220A1 (en) * 2022-09-22 2024-03-28 江西联创电子有限公司 Optical lens

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205049802U (en) * 2015-10-20 2016-02-24 浙江舜宇光学有限公司 Ultra wide -angle lens
CN207488602U (en) * 2017-11-23 2018-06-12 江西联益光学有限公司 Small-sized wide-angle lens
CN110542989A (en) * 2019-08-07 2019-12-06 瑞声声学科技(深圳)有限公司 Camera lens

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205049802U (en) * 2015-10-20 2016-02-24 浙江舜宇光学有限公司 Ultra wide -angle lens
CN207488602U (en) * 2017-11-23 2018-06-12 江西联益光学有限公司 Small-sized wide-angle lens
CN110542989A (en) * 2019-08-07 2019-12-06 瑞声声学科技(深圳)有限公司 Camera lens
JP6738470B1 (en) * 2019-08-07 2020-08-12 エーエーシー コミュニケーション テクノロジーズ（ジョウシュウ）カンパニーリミテッド Imaging lens

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113433665A (en) * 2021-07-12 2021-09-24 浙江舜宇光学有限公司 Optical imaging lens
CN113433665B (en) * 2021-07-12 2022-11-04 浙江舜宇光学有限公司 Optical imaging lens
WO2024061220A1 (en) * 2022-09-22 2024-03-28 江西联创电子有限公司 Optical lens

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