CN111679402A - Optical imaging lens - Google Patents
Optical imaging lens Download PDFInfo
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- CN111679402A CN111679402A CN202010599298.8A CN202010599298A CN111679402A CN 111679402 A CN111679402 A CN 111679402A CN 202010599298 A CN202010599298 A CN 202010599298A CN 111679402 A CN111679402 A CN 111679402A
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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 invention discloses an optical imaging lens, which comprises five lenses in sequence from an object side to an image side: the first lens with negative focal power, the object side surface of the first lens is a concave surface, and the image side surface of the first lens is a concave surface; a second lens having an optical power; a third lens having a negative optical power; a fourth lens having an optical power; a fifth lens having optical power; wherein the effective focal length f1 of the first lens and half of the Semi-FOV of the maximum field angle of the optical imaging system satisfy: the effective focal length f1 of the first lens and half of the maximum field angle Semi-FOV of the optical imaging system satisfy: 9mm2<f12×tan(Semi‑FOV)<15mm2. The invention provides an optical imaging system with wide angle and small optical distortion by controlling relevant parameters of each lens.
Description
Technical Field
The invention relates to an optical imaging lens, in particular to an optical imaging lens consisting of five lenses.
Background
In recent years, with the development of science and technology, portable electronic products have been increasingly developed, and particularly, portable electronic products having an image capturing function have been more favored. Each large terminal manufacturer puts more new demands on the lens specifications, which poses more difficult challenges to the design of optical systems. The invention provides an optical imaging system with wide angle and small optical distortion.
Disclosure of Invention
In view of the above problems, the present invention provides an optical lens with five lenses, which is an optical imaging system with wide angle and small optical distortion.
The invention discloses an optical imaging lens, which comprises five lenses, namely a first lens, a second lens, a third lens, a fourth lens and a fifth lens, wherein the first lens, the second lens, the third lens, the fourth lens and the fifth lens have focal power in sequence from an object side to an image side along an optical axis; the first lens element has negative focal power, and has a concave object-side surface and a concave image-side surface.
According to one embodiment of the invention, the effective focal length f1 of the first lens and half the Semi-FOV of the maximum field angle of the optical imaging system satisfy: 9mm2<f12×tan(Semi-FOV)<15mm2。
According to one embodiment of the present invention, the maximum field angle FOV of the optical imaging system satisfies: 110 < FOV < 130.
According to one embodiment of the invention, the effective focal length f4 of the fourth lens and the effective focal length f5 of the fifth lens satisfy: i f5/f 4I < 3.0.
According to one embodiment of the invention, the half Semi-FOV of the maximum field angle of the optical imaging system and the maximum effective radius DT11 of the object-side surface of the first lens satisfy: 0.5< tan (Semi-FOV)/DT11< 1.0.
According to one embodiment of the present invention, the axial distance SAG42 between the maximum effective radius DT42 of the image side surface of the fourth lens and the intersection point of the image side surface of the fourth lens and the optical axis to the effective radius vertex of the image side surface of the fourth lens satisfies: -2.5< DT42/SAG42< -1.0.
According to one embodiment of the invention, the edge thickness ET5 of the fifth lens and the central thickness CT5 of the fifth lens on the optical axis satisfy: 1.5< ET5/CT5< 3.5.
According to one embodiment of the present invention, an on-axis distance SAG41 between an intersection point of the fourth lens object-side surface and the optical axis to an effective radius vertex of the fourth lens object-side surface and an on-axis distance SAG42 between an intersection point of the fourth lens image-side surface and the optical axis to an effective radius vertex of the fourth lens image-side surface satisfy: 2.0< | SAG42/SAG41| < 7.0.
According to one embodiment of the present invention, an on-axis distance TTL from an object side surface of the first lens to an imaging surface and a combined focal length f123 of the first lens, the second lens, and the third lens satisfy: 1.5< TTL/f123< 3.0.
According to one embodiment of the invention, the distance BFL between the image side surface of the last lens of the optical imaging system and the imaging surface on the optical axis and the central thickness CT5 of the fifth lens on the optical axis satisfy that: 1.0< BFL/CT5< 5.0.
According to one embodiment of the present invention, a center thickness CT4 of the fourth lens on the optical axis and a center thickness CT5 of the fifth lens on the optical axis satisfy: 0.2< CT5/CT4< 0.7.
According to one embodiment of the present invention, 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 a center thickness CT4 of the fourth lens on the optical axis satisfy: (T23+ T34). times.2 < CT 4.
According to one embodiment of the invention, 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: 0< (R3+ R4)/(R3-R4) < 0.6.
According to one embodiment of the invention, the fourth lens satisfies, between a central thickness CT4 on the optical axis and an edge thickness ET4 of the fourth lens: 3< CT4/ET 4< 5.
One aspect of the present invention provides an optical imaging lens, wherein an on-axis distance TTL from an object-side surface of a first lens element to an imaging surface and a combined focal length f123 of the first lens element, a second lens element and a third lens element satisfy: 1.5< TTL/f123< 3.0; and the distance BFL between the image side surface of the last lens of the optical imaging system and the image plane and the center thickness CT5 of the fifth lens on the optical axis satisfy that: 1.0< BFL/CT5< 5.0.
According to one embodiment of the invention, the half Semi-FOV of the maximum field angle of the optical imaging system and the maximum effective radius DT11 of the object-side surface of the first lens satisfy: 0.5< tan (Semi-FOV)/DT11< 1.0; the axial distance SAG42 between the maximum effective radius DT42 of the image side surface of the fourth lens and the intersection point of the image side surface of the fourth lens and the optical axis and the effective radius vertex of the image side surface of the fourth lens satisfies the following conditions: -2.5< DT42/SAG42< -1.0.
According to one embodiment of the invention, the effective focal length f4 of the fourth lens and the effective focal length f5 of the fifth lens satisfy: i f5/f 4I < 3.0.
According to one embodiment of the present invention, a center thickness CT4 of the fourth lens on the optical axis and a center thickness CT5 of the fifth lens on the optical axis satisfy: 0.2< CT5/CT4< 0.7; the air interval T23 of the second lens and the third lens on the optical axis, the air interval T34 of the third lens and the fourth lens on the optical axis and the central thickness CT4 of the fourth lens on the optical axis satisfy: (T23+ T34). times.2 < CT 4.
According to one embodiment of the invention, 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: 0< (R3+ R4)/(R3-R4) < 0.6; the fourth lens satisfies, between a central thickness CT4 on the optical axis and an edge thickness ET4 of the fourth lens: 3< CT4/ET 4< 5.
One aspect of the present invention provides an optical imaging lens, wherein an edge thickness ET5 of a fifth lens and a central thickness CT5 of the fifth lens on an optical axis satisfy: 1.5< ET5/CT5< 3.5; the following condition is satisfied between the on-axis distance SAG41 from the intersection point of the fourth lens object-side surface and the optical axis to the effective radius vertex of the fourth lens object-side surface and the on-axis distance SAG42 from the intersection point of the fourth lens image-side surface and the optical axis to the effective radius vertex of the fourth lens image-side surface: 2.0< | SAG42/SAG41| < 7.0.
According to one embodiment of the present invention, the maximum field angle FOV of the optical imaging system satisfies: 110 ° < FOV <130 °; the fourth lens satisfies, between a central thickness CT4 on the optical axis and an edge thickness ET4 of the fourth lens: 3< CT4/ET 4< 5.
According to one embodiment of the invention, the effective focal length f4 of the fourth lens and the effective focal length f5 of the fifth lens satisfy: l f5/f4 l < 3.0; and the curvature radius R3 of the object side surface of the second lens and the curvature radius R4 of the image side surface of the second lens satisfy that: 0< (R3+ R4)/(R3-R4) < 0.6.
According to one embodiment of the invention, the half Semi-FOV of the maximum field angle of the optical imaging system and the maximum effective radius DT11 of the object-side surface of the first lens satisfy: 0.5< tan (Semi-FOV)/DT11< 1.0; the air interval T23 of the second lens and the third lens on the optical axis, the air interval T34 of the third lens and the fourth lens on the optical axis, and the center thickness CT4 of the fourth lens on the optical axis satisfy: (T23+ T34). times.2 < CT 4.
According to one embodiment of the present invention, the maximum effective radius DT42 of the image-side surface of the fourth lens and the on-axis distance SAG42 from the intersection point of the image-side surface of the fourth lens and the optical axis to the apex of the effective radius of the image-side surface of the fourth lens satisfy: -2.5< DT42/SAG42< -1.0; the central thickness CT4 of the fourth lens on the optical axis and the central thickness CT5 of the fifth lens on the optical axis satisfy that: 0.2< CT5/CT4< 0.7.
According to one embodiment of the present invention, an on-axis distance TTL from the object-side surface of the first lens to the imaging surface and a combined focal length f123 of the first lens, the second lens, and the third lens satisfy: 1.5< TTL/f123< 3.0; the distance BFL between the image side surface of the last lens of the optical imaging system and the imaging surface on the optical axis and the central thickness CT5 of the fifth lens on the optical axis satisfy that: 1.0< BFL/CT5< 5.0.
According to one embodiment of the invention, the effective focal length f1 of the first lens and half the Semi-FOV of the maximum field angle of the optical imaging system satisfy: 9mm2<f12×tan(Semi-FOV)<15mm2。
The invention has the following positive effects: by using the technical scheme provided by the invention, the size of the camera lens of the optical system is smaller and smaller, so that the miniaturization is facilitated. A wide-angle, small optical distortion optical imaging system is provided.
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 is a schematic structural diagram of an optical imaging lens according to a first embodiment of the present invention;
fig. 2-5 are diagrams illustrating an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of an optical imaging lens according to a first embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an optical imaging lens according to a second embodiment of the present invention;
FIGS. 7-10 are diagrams illustrating an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of an optical imaging lens according to a second embodiment of the present invention;
FIG. 11 is a schematic structural diagram of an optical imaging lens system according to a third embodiment of the present invention;
fig. 12 to 15 show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of an optical imaging lens according to a third embodiment of the present invention;
fig. 16 is a schematic structural diagram of an optical imaging lens according to a fourth embodiment of the present invention;
fig. 17-20 show axial chromatic aberration curves, astigmatic curves, distortion curves, and chromatic aberration of magnification curves of an optical imaging lens according to a fourth embodiment of the present invention;
fig. 21 is a schematic structural diagram of an optical imaging lens according to a fifth embodiment of the present invention;
fig. 22-25 show axial chromatic aberration curves, astigmatic curves, distortion curves, and chromatic aberration of magnification curves of an optical imaging lens according to a fifth embodiment of the present invention;
fig. 26 is a schematic structural diagram of an optical imaging lens according to a sixth embodiment of the present invention;
fig. 27 to 30 show an axial chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve of an optical imaging lens according to a sixth embodiment of the present invention;
fig. 31 is a schematic structural view of an optical imaging lens according to a seventh embodiment of the present invention;
fig. 32 to 35 are diagrams showing an axial chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve of an optical imaging lens according to a seventh embodiment of the present invention;
fig. 36 is a schematic structural view of an optical imaging lens according to an eighth embodiment of the present invention;
fig. 37 to 40 show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve of an optical imaging lens according to an eighth embodiment of the present invention.
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 invention are described in detail below.
The optical imaging lens according to an exemplary embodiment of the present invention may include five lens elements, in order from an object side to an image side: the lens includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens.
In the embodiment of the invention, the low-order aberration of the control system is effectively balanced by reasonably controlling the focal power of each optical component of the system, the first lens has negative focal power, the object side surface of the first lens is a concave surface, and the image side surface of the first lens is a concave surface; the second lens has positive focal power or negative focal power; the third lens has a negative optical focus; the fourth lens has positive focal power or negative focal power; the fifth lens has positive or negative focal powerThe focal power; the optical imaging lens of the application can satisfy: 9mm2<f12×tan(Semi-FOV)<15mm2The conditions of (a); where f1 is the effective focal length of the first lens and the Semi-FOV is half the maximum field angle of the optical imaging system. The ratio of the focal length of the L1 to the field angle can be adjusted to ensure that the lens is small at a certain field angle and the effective diameter of the L1 is as small as possible. More specifically, f1 and Semi-FOV satisfy: f1 not less than 9.282×tan(Semi-FOV)≤14.94。
In the embodiment of the invention, the optical imaging lens can meet the condition of 110 degrees < FOV <130 degrees; where FOV is the maximum field angle of the optical imaging system. The imaging range of the system can be effectively controlled by controlling the maximum field angle. More specifically, the FOV may satisfy: FOV is greater than or equal to 116.08 degrees and less than or equal to 117.34 degrees
In the embodiment of the invention, the optical imaging lens can meet the condition of | f5/f4| < 3.0; wherein f4 is the effective focal length of the fourth lens, and f5 is the effective focal length of the fifth lens. By controlling the effective focal lengths of the fourth lens and the fifth lens, the contribution amount of the fourth lens and the fifth lens to the aberration of the whole optical system can be controlled, and the off-axis aberration of the system is balanced, so that the imaging quality of the system is improved. More specifically, f5 and f4 satisfy the following conditions: the absolute value of f5/f4 is more than or equal to 0.4 and less than or equal to 2.45.
In the embodiment of the invention, the optical imaging lens can meet the following requirements: a condition of 0.5< tan (Semi-FOV)/DT11< 1.0; where Semi-FOV is half of the maximum field angle of the optical imaging system and DT11 is the maximum effective radius of the object-side surface of the first lens. The ratio of the effective diameter of the L1 to the field angle can be adjusted to ensure that the lens is small at a certain field angle and the effective diameter of the L1 is as small as possible. More specifically, tan (Semi-FOV) and DT11 satisfy: 0.71-tan (Semi-FOV)/DT 11-0.90.
In the embodiment of the invention, the optical imaging lens can meet the condition of-2.5 < DT42/SAG42< -1.0; DT42 is the maximum effective radius of the image side surface of the fourth lens. The ratio of the rise to the effective diameter of the fourth lens can be controlled, the diameter of the lens is ensured to be as small as possible, and the resolution is ensured. More specifically, DT42 and SAG42 satisfy: -2.39 < DT42/SAG42< 1.39.
In the embodiment of the invention, the optical imaging lens can meet the condition that 1.5< ET5/CT5< 3.5; where ET5 is the edge thickness of the fifth lens, and CT5 is the center thickness of the fifth lens on the optical axis. The processing manufacturability of the lens can be ensured by controlling the ratio of the edge thickness and the center thickness of the fifth lens. More specifically, ET5 and CT5 satisfy: ET5/CT5 is more than or equal to 1.71 and less than or equal to 3.36.
In the embodiment of the invention, the optical imaging lens can meet the condition of 2.0< | SAG42/SAG41| < 7.0; SAG41 is an on-axis distance between an intersection point of the object side surface of the fourth lens and the optical axis and an effective radius vertex of the object side surface of the fourth lens, and SAG42 is an on-axis distance between an intersection point of the image side surface of the fourth lens and the optical axis and an effective radius vertex of the image side surface of the fourth lens. The deflection of marginal light rays can be effectively controlled by controlling the rise ratio of the object plane to the image plane of the fourth lens, and the high-level spherical aberration generated by an imaging system is balanced. More specifically, SAG42 and SAG41 satisfy: 2.27 ≦ SAG42/SAG41 ≦ 6.83.
In the embodiment of the invention, the optical imaging lens can meet the condition that TTL/f123 is less than 3.0 and is more than 1.5; wherein, TTL is an on-axis distance from the object-side surface of the first lens element to the image plane, and f123 is a combined focal length of the first lens element, the second lens element and the third lens element. The lens focal length can be controlled in the range of TTL (transistor-transistor logic) as small as possible by controlling the combined focal length and the lens length of the first lens, the second lens and the third lens, so that the lens distortion is controlled. More specifically, the following conditions are satisfied between TTL and f 123: TTL/f123 is more than or equal to 1.94 and less than or equal to 2.85.
In the embodiment of the invention, the optical imaging lens can meet the condition that BFL/CT5 is less than 5.0; the BFL is a distance from an image-side surface of the last lens of the optical imaging system to an image plane on an optical axis, and the CT5 is a central thickness of the fifth lens on the optical axis. The field curvature of the lens can be balanced by controlling the central thickness of the fifth lens and the distance ratio of the last lens to the imaging surface, so that the resolution is effectively improved. More specifically, 1.45 ≦ BFL/CT5 ≦ 4.65.
In the embodiment of the invention, the optical imaging lens can meet the condition that 0.2< CT5/CT4< 0.7; where CT4 is the central thickness of the fourth lens on the optical axis, and CT5 is the central thickness of the fifth lens on the optical axis. The curvature of field contribution of each field of the system can be controlled within a reasonable range by restricting the ratio of the central thicknesses of the fourth lens and the fifth lens, so that the curvature of field generated by other lenses is balanced, and the resolution of the lens is effectively improved. More specifically, the following is satisfied between CT5 and CT 4: 0.22 is less than or equal to CT5/CT4 is less than or equal to 0.67.
In the embodiment of the invention, the optical imaging lens can meet the requirements of 0< (R3+ R4)/(R3-R4) < 0.6; wherein R3 is the curvature radius of the object-side surface of the second lens, and R4 is the curvature radius of the image-side surface of the second lens. The curvature radius of two side faces of the object image of the first lens can be controlled, so that the system can well realize light path deflection and balance high-level spherical aberration generated by an imaging system. More specifically, R3 and R4 satisfy: not less than 0.35 (R3+ R4)/(R3-R4) not more than 0.54.
In the embodiment of the invention, the optical imaging lens can meet the condition that 3< CT4/ET 4< 5; where CT4 is the central thickness of the fourth lens on the optical axis, and ET4 is the edge thickness of the fourth lens. The processing manufacturability of the lens can be ensured by controlling the ratio of the edge thickness and the center thickness of the fifth lens. More specifically, the following conditions are satisfied between CT4 and ET 4: CT4/ET4 is more than or equal to 3.28 and less than or equal to 4.38.
All technical features of the optical imaging lens of the invention can be combined and configured to achieve corresponding effects.
The optical imaging lens according to the above-described embodiment of the present invention may employ a plurality of lenses, for example, five lenses as described above. The low-order aberration of the control system is effectively balanced by reasonably controlling the focal power of each optical component of the system, the lens is ensured to be small at a certain angle of view by adjusting the ratio of the focal length of L1 to the angle of view and the ratio of the effective diameter of L1 to the angle of view, the effective diameter of L1 is as small as possible, and the imaging system has the characteristics of wide angle and small optical distortion.
Specific embodiments of an optical imaging lens suitable for the above-described embodiments are further described below with reference to the drawings.
Example one
Fig. 1 is a schematic structural diagram of an optical imaging lens assembly according to a first embodiment of the present invention, and as shown in fig. 1, the imaging lens assembly includes, in order from an object side surface to an image side surface, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.
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 negative power, and has a convex object-side surface S5 and a concave image-side surface S6; the fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8; the fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
Table 1 shows the basic parameters of the optical imaging lens of the first embodiment, wherein the curvature radius, the thickness, and the focal length are in millimeter units.
TABLE 1
In the first embodiment, the effective focal length f of the optical imaging system is 1.24mm, the on-axis distance TTL from the object side surface to the image side surface of the first lens in the direction from the object side to the image side surface of the nine lenses is 5.08mm, the maximum half image height ImgH is 2.00mm, half semifov of the maximum field angle of the optical imaging system is 58.67mm, and the f-number Fno of the optical imaging system is 2.25.
In the present first embodiment, the effective focal length f1 of the first lens and half of the maximum field angle Semi-FOV of the optical imaging system, the relation f12× tan (Semi-FOV) is 10.50, and satisfies 9mm2<f12×tan(Semi-FOV)<15mm2。
In the first embodiment, the maximum field angle FOV of the optical imaging system, where the relational expression FOV is 117.34 °, satisfies: 110 < FOV < 130.
In the present first embodiment, the effective focal length f4 of the fourth lens and the effective focal length f5 of the fifth lens satisfy the relationship | f5/f4| > 2.45: i f5/f 4I < 3.0.
In the present first embodiment, the Semi-FOV of the maximum field angle of the optical imaging system and the maximum effective radius DT11 of the object-side surface of the first lens, where tan (Semi-FOV)/DT11 is 0.88, satisfy: 0.5< tan (Semi-FOV)/DT11< 1.0.
In the first embodiment, the maximum effective radius DT42 of the image-side surface of the fourth lens and the on-axis distance SAG42 from the intersection of the image-side surface of the fourth lens and the optical axis to the apex of the effective radius of the image-side surface of the fourth lens are satisfied in the relationship DT42/SAG42 of-2.21: -2.5< DT42/SAG42< -1.0.
In the first embodiment, the edge thickness ET5 of the fifth lens and the center thickness CT5 of the fifth lens on the optical axis satisfy the relationship ET5/CT5 equal to 1.93: 1.5< ET5/CT5< 3.5.
In the present first embodiment, an on-axis distance SAG41 between the intersection of the fourth lens object-side surface and the optical axis to the effective radius vertex of the fourth lens object-side surface and an on-axis distance SAG42 between the intersection of the fourth lens image-side surface and the optical axis to the effective radius vertex of the fourth lens image-side surface, and a relation | SAG42/SAG41| ═ 3.61, satisfy: 2.0< | SAG42/SAG41| < 7.0.
In the first embodiment, the on-axis distance TTL from the object-side surface of the first lens to the image plane and the combined focal length f123 of the first lens, the second lens and the third lens satisfy the following equation, where TTL/f123 is 2.09: 1.5< TTL/f123< 3.0.
In the first embodiment, the distance BFL from the image-side surface of the last lens to the image-side surface of the optical imaging system on the optical axis and the central thickness CT5 of the fifth lens on the optical axis satisfy the following relation BFL/CT5 ═ 2.87: 1.0< BFL/CT5< 5.0.
In the present first embodiment, the central thickness CT4 of the fourth lens on the optical axis and the central thickness CT5 of the fifth lens on the optical axis satisfy the relationship CT5/CT4 equal to 0.34: 0.2< CT5/CT4< 0.7.
In the present first embodiment, the air interval T23 of the second lens and the third lens on the optical axis, the air interval T34 of the third lens and the fourth lens on the optical axis, and the center thickness CT4 of the fourth lens on the optical axis satisfy: (T23+ T34). times.2 < CT 4.
In the present first embodiment, 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 the relationship (R3+ R4)/(R3-R4) of 0.54: 0< (R3+ R4)/(R3-R4) < 0.6.
In the first embodiment, the central thickness CT4 of the fourth lens on the optical axis and the edge thickness ET4 of the fourth lens satisfy the relationship CT4/ET4 equal to 4.18: 3< CT4/ET 4< 5.
In the first embodiment, the object-side surface and the image-side surface of any one of the first lens E1 to the fifth lens E5 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:
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 the conic coefficient (given in table 1); ai is the correction coefficient of the i-th order of the aspherical surface.
Table 2 below shows the high-order term coefficients a4, a6, A8, a10, a12, a14, a16, a18, and a20 of each aspherical surface S1 to S10 that can be used for each aspherical lens in the first embodiment of the present application.
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 2.1937E-01 | -1.6976E-01 | 1.2890E-01 | -7.4025E-02 | 3.0162E-02 | -8.1635E-03 | 1.3612E-03 | -1.2237E-04 | 4.3398E-06 |
| S2 | 5.4190E-01 | -3.4207E-01 | 5.3369E+00 | -6.4046E+01 | 4.6233E+02 | -1.9200E+03 | 4.6711E+03 | 6.1752E+03 | 3.4474E+03 |
| S3 | -3.8158E-02 | 6.0690E-01 | -3.0840E+01 | 5.6358E+02 | -5.8585E+03 | 3.5989E+04 | -1.2936E+05 | 2.5030E+05 | -2.0058E+05 |
| S4 | -1.9482E-01 | 5.8501E+00 | -4.6010E+01 | 2.0251E+02 | -5.4627E+02 | 8.6074E+02 | -6.8395E+02 | 1.2440E+02 | 9.9838E+01 |
| S5 | -1.4353E+00 | 9.0332E+00 | -5.7151E+01 | 2.5861E+02 | -7.9242E+02 | 1.6037E+03 | -2.0706E+03 | 1.5525E+03 | -5.1774E+02 |
| S6 | 3.2881E-01 | -2.6333E+00 | 8.6367E+00 | -1.6432E+01 | 2.0279E+01 | -1.7286E+01 | 1.0242E+01 | -3.8446E+00 | 6.6903E-01 |
| S7 | 1.2484E+00 | -4.4000E+00 | 9.6464E+00 | -1.2528E+01 | 8.9761E+00 | -2.3147E+00 | -1.2079E+00 | 1.0267E+00 | -2.1631E-01 |
| S8 | -2.3262E-01 | 1.7020E+00 | -7.6012E+00 | 1.9527E+01 | -3.0550E+01 | 2.9825E+01 | -1.7770E+01 | 5.9189E+00 | -8.4453E-01 |
| S9 | -1.0031E+00 | 2.4415E+00 | -9.1569E+00 | 2.1600E+01 | -3.0403E+01 | 2.6236E+01 | -1.3694E+01 | 3.9818E+00 | -4.9657E-01 |
| S10 | 1.5475E-01 | -1.5380E+00 | 3.2584E+00 | -3.7669E+00 | 2.6804E+00 | -1.2013E+00 | 3.3011E-01 | -5.0746E-02 | 3.3375E-03 |
TABLE 2
Fig. 2 is an axial chromatic aberration curve of the optical imaging lens according to the first embodiment, which shows the convergent focus deviation of light rays with different wavelengths after passing through the lens. Fig. 3 shows astigmatism curves of the optical imaging lens in the first embodiment, which represent meridional field curvature and sagittal field curvature. Fig. 4 is a distortion curve of the optical imaging lens in the first embodiment, which shows distortion magnitude values corresponding to different image heights. Fig. 5 is a chromatic aberration of magnification curve of the optical imaging lens according to the first embodiment, which shows the deviation of different image heights of the light beam on the imaging surface after passing through the lens. As can be seen from fig. 2 to 5, the optical imaging lens of the first embodiment can achieve good imaging quality.
Example two
Fig. 6 is a schematic structural diagram of an optical imaging lens assembly according to a second embodiment of the present application, and as shown in fig. 6, the imaging lens assembly includes, in order from an object side surface to an image side surface, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.
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 negative power, and has a convex object-side surface S5 and a concave image-side surface S6; the fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8; the fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In the second embodiment of the present application, the parameters of each relation are as explained in the first embodiment, and the values of each relation are as listed in table 3 below.
TABLE 3
Table 4 shows basic parameters of the optical imaging lens according to the second embodiment of the present application, where the curvature radius, the thickness, and the focal length are all in millimeter units.
TABLE 4
Table 5 below shows the high-order term coefficients a4, a6, A8, a10, a12, a14, a16, a18, and a20 for each aspherical surface S1-S10 that can be used for each aspherical lens in the second embodiment of the present application. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 2.2027E-01 | -1.7333E-01 | 1.4114E-01 | -9.4177E-02 | 4.7860E-02 | -1.7112E-02 | 3.9450E-03 | -5.1484E-04 | 2.8411E-05 |
| S2 | 4.9757E-01 | 4.7815E-01 | -8.3604E+00 | 7.5789E+01 | -4.0225E+02 | 1.3203E+03 | -2.5760E+03 | 2.7313E+03 | -1.1996E+03 |
| S3 | -6.3157E-02 | 9.5509E-01 | -3.4752E+01 | 5.7481E+02 | -5.6546E+03 | 3.3472E+04 | -1.1744E+05 | 2.2434E+05 | -1.7956E+05 |
| S4 | -2.7831E-01 | 8.4358E+00 | -7.2258E+01 | 3.5770E+02 | -1.1429E+03 | 2.3616E+03 | -3.0590E+03 | 2.2584E+03 | -7.2599E+02 |
| S5 | -1.5706E+00 | 1.0700E+01 | -6.9726E+01 | 3.0967E+02 | -9.0511E+02 | 1.6967E+03 | -1.9534E+03 | 1.2364E+03 | -3.1896E+02 |
| S6 | 3.2522E-01 | -2.5832E+00 | 8.7525E+00 | -1.8228E+01 | 2.6556E+01 | -2.8439E+01 | 2.1346E+01 | -9.7243E+00 | 1.9588E+00 |
| S7 | 1.2923E+00 | -4.6130E+00 | 1.0378E+01 | -1.4009E+01 | 1.0414E+01 | -2.5343E+00 | -1.9621E+00 | 1.6296E+00 | -3.6136E-01 |
| S8 | -1.1648E-01 | 7.5976E-01 | -3.8722E+00 | 1.0841E+01 | -1.7893E+01 | 1.8147E+01 | -1.1135E+01 | 3.8099E+00 | -5.5999E-01 |
| S9 | -9.9287E-01 | 1.9251E+00 | -7.0795E+00 | 1.7995E+01 | -2.7196E+01 | 2.4839E+01 | -1.3519E+01 | 4.0412E+00 | -5.1107E-01 |
| S10 | 1.4169E-01 | -1.5538E+00 | 3.6291E+00 | -4.5634E+00 | 3.4820E+00 | -1.6506E+00 | 4.7409E-01 | -7.5461E-02 | 5.1030E-03 |
TABLE 5
Fig. 7 is a diagram illustrating an axial chromatic aberration curve of an optical imaging lens according to a second embodiment of the present application, which shows the convergent focus deviation of light rays with different wavelengths after passing through the lens. Fig. 8 shows astigmatism curves of an optical imaging lens according to a second embodiment of the present application, which represent meridional field curvature and sagittal field curvature. Fig. 9 is a distortion curve of the optical imaging lens according to the second embodiment of the present application, which shows distortion magnitude values corresponding to different image heights. Fig. 10 is a chromatic aberration of magnification curve of an optical imaging lens according to a second embodiment of the present application, which shows the deviation of different image heights of light rays on an imaging surface after passing through the lens. As can be seen from fig. 7 to 10, the optical imaging lens according to the second embodiment of the present application can achieve good imaging quality.
EXAMPLE III
Fig. 11 is a schematic structural diagram of an optical imaging lens assembly according to a third embodiment of the present application, and as shown in fig. 11, the imaging lens assembly includes, in order from an object side surface to an image side surface, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.
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 negative power, and has a convex object-side surface S5 and a concave image-side surface S6; the fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8; the fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In the third embodiment of the present application, the parameters of each relation are as explained in the first embodiment, and the values of each relation are as listed in table 6 below.
TABLE 6
Table 7 shows basic parameters of the optical imaging lens according to the third embodiment of the present application, where the radius of curvature, the thickness, and the focal length are all in millimeter units.
| Flour mark | Surface type | Radius of curvature | Thickness of | Focal length | Refractive index | Coefficient of dispersion | Coefficient of cone |
| OBJ | Spherical surface | All-round | All-round | ||||
| S1 | Aspherical surface | -3.4466 | 1.0481 | 1.2064 | |||
| S2 | Aspherical surface | 2.5263 | 0.5852 | -2.51 | 1.55 | 56.1 | -2.1422 |
| STO | Spherical surface | 0.1467 | |||||
| S3 | Aspherical surface | 2.3832 | 0.8902 | 1.22 | 1.55 | 56.1 | 3.9348 |
| S4 | Aspherical surface | -0.8055 | 0.0300 | -0.9069 | |||
| S5 | Aspherical surface | 4.1119 | 0.2426 | -3.26 | 1.68 | 19.2 | -18.7462 |
| S6 | Aspherical surface | 1.4018 | 0.2109 | -24.1836 | |||
| S7 | Aspherical surface | -2.2150 | 0.8829 | 1.30 | 1.55 | 56.1 | 2.9403 |
| S8 | Aspherical surface | -0.6122 | 0.0328 | -1.7925 | |||
| S9 | Aspherical surface | 3.6005 | 0.4478 | -1.49 | 1.67 | 20.4 | 2.6201 |
| S10 | Aspherical surface | 0.7395 | 0.4451 | -6.9740 | |||
| S11 | Spherical surface | All-round | 0.2100 | 1.51 | 64.2 | ||
| S12 | Spherical surface | All-round | 0.2192 | ||||
| S13 | Spherical surface | All-round |
TABLE 7
Table 8 below shows the high-order term coefficients a4, a6, A8, a10, a12, a14, a16, a18, and a20 of each aspherical surface S1 to S10 that can be used for each aspherical lens in the third embodiment of the present application. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 8
Fig. 12 is a diagram illustrating an axial chromatic aberration curve of an optical imaging lens according to a third embodiment of the present application, which shows the convergent focus deviation of light rays with different wavelengths after passing through the lens. Fig. 13 shows astigmatism curves of the optical imaging lens in the third embodiment of the present application, which represent meridional field curvature and sagittal field curvature. Fig. 14 shows distortion curves of the optical imaging lens according to the third embodiment of the present application, which show distortion magnitude values corresponding to different image heights. Fig. 15 is a chromatic aberration of magnification curve of an optical imaging lens according to a third embodiment of the present application, which shows the deviation of different image heights of light rays on an imaging surface after passing through the lens. As can be seen from fig. 12 to 15, the optical imaging lens according to the third embodiment of the present application can achieve good imaging quality.
Example four
Fig. 16 is a schematic structural diagram of an optical imaging lens assembly according to a fourth embodiment of the present application, and as shown in fig. 16, the imaging lens assembly includes, in order from an object side surface to an image side surface, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.
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 negative power, and has a convex object-side surface S5 and a concave image-side surface S6; the fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8; the fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In the fourth embodiment of the present application, the parameters of each relation are as explained in the first embodiment, and the values of each relation are as listed in the following table 9.
TABLE 9
Table 10 shows basic parameters of the optical imaging lens according to the fourth embodiment of the present application, where the radius of curvature, the thickness, and the focal length are all in millimeter units.
| Flour mark | Surface type | Radius of curvature | Thickness of | Focal length | Refractive index | Coefficient of dispersion | Coefficient of cone |
| OBJ | Spherical surface | All-round | All-round | ||||
| S1 | Aspherical surface | -4.7426 | 1.0214 | 1.9439 | |||
| S2 | Aspherical surface | 2.1096 | 0.6814 | -2.54 | 1.55 | 56.1 | -1.4808 |
| STO | Spherical surface | 0.1563 | |||||
| S3 | Aspherical surface | 1.9462 | 0.8961 | 1.29 | 1.68 | 56.1 | 3.6432 |
| S4 | Aspherical surface | -0.9241 | 0.0300 | -0.9212 | |||
| S5 | Aspherical surface | 1.9808 | 0.1500 | -3.99 | 1.67 | 19.2 | -19.3518 |
| S6 | Aspherical surface | 1.1082 | 0.2316 | -15.9836 | |||
| S7 | Aspherical surface | -2.2609 | 0.8517 | 1.22 | 1.55 | 56.1 | 2.9682 |
| S8 | Aspherical surface | -0.5837 | 0.1658 | -2.0353 | |||
| S9 | Aspherical surface | -10.0753 | 0.3825 | -1.29 | 1.54 | 56.1 | -90.0000 |
| S10 | Aspherical surface | 0.9531 | 0.4053 | -7.6600 | |||
| S11 | Spherical surface | All-round | 0.2100 | 1.51 | 64.2 | ||
| S12 | Spherical surface | All-round | 0.1814 | ||||
| S13 | Spherical surface | All-round |
Table 11 below shows the coefficients of the high-order terms a4, a6, A8, a10, a12, a14, a16, a18, and a20 for each of the aspherical surfaces S1 to S10 that can be used for each of the aspherical lenses in the fourth embodiment of the present application. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 1.5881E-01 | -1.0797E-01 | 7.2389E-02 | -3.7280E-02 | 1.3805E-02 | -3.4782E-03 | 5.6031E-04 | -5.1570E-05 | 2.0457E-06 |
| S2 | 4.2972E-01 | -8.6037E-02 | 1.3134E-01 | -3.9297E+00 | 4.4778E+01 | -1.9346E+02 | 4.3699E+02 | -5.0955E+02 | 2.4682E+02 |
| S3 | -5.8929E-02 | -3.9282E-01 | 6.9888E+00 | -9.1468E+01 | 6.4031E+02 | -2.6116E+03 | 6.1731E+03 | -7.8491E+03 | 4.1335E+03 |
| S4 | -7.6096E-02 | 5.5003E-02 | 6.7714E+00 | -4.4889E+01 | 1.4238E+02 | -2.7653E+02 | 3.3233E+02 | -2.2579E+02 | 6.5126E+01 |
| S5 | -7.6165E-01 | 5.9055E-01 | -7.3070E+00 | 6.6095E+01 | -2.7453E+02 | 6.2392E+02 | -8.1393E+02 | 5.6225E+02 | -1.5467E+02 |
| S6 | 5.6572E-01 | -5.4957E+00 | 2.1692E+01 | -5.3737E+01 | 8.8130E+01 | -9.5278E+01 | 6.4703E+01 | -2.4700E+01 | 3.9671E+00 |
| S7 | 3.8472E-01 | 1.3549E+00 | -1.0240E+01 | 3.0993E+01 | -6.0744E+01 | 8.1200E+01 | -7.0017E+01 | 3.4609E+01 | -7.3921E+00 |
| S8 | 5.1865E-01 | -2.5506E+00 | 7.6862E+00 | -1.6477E+01 | 2.3765E+01 | -2.2972E+01 | 1.4400E+01 | -5.3494E+00 | 9.0811E-01 |
| S9 | 4.2868E-01 | -2.1683E+00 | 5.4859E+00 | -9.8521E+00 | 1.1837E+01 | -9.1595E+00 | 4.3813E+00 | -1.1791E+00 | 1.3631E-01 |
| S10 | -9.3084E-02 | 7.1497E-02 | -1.5886E-01 | 2.1655E-01 | -1.7232E-01 | 8.5374E-02 | -2.6233E-02 | 4.6011E-03 | -3.5269E-04 |
TABLE 11
Fig. 17 is a diagram illustrating an axial chromatic aberration curve of an optical imaging lens according to a fourth embodiment of the present application, which shows the convergent focus deviation of light rays with different wavelengths after passing through the lens. Fig. 18 shows astigmatism curves of the optical imaging lens system according to the fourth embodiment of the present application, which represent meridional field curvature and sagittal field curvature. Fig. 19 is a distortion curve of the optical imaging lens according to the fourth embodiment of the present application, which shows distortion magnitude values corresponding to different image heights. Fig. 20 is a chromatic aberration of magnification curve of an optical imaging lens according to a fourth embodiment of the present application, which shows the deviation of different image heights of light rays on an imaging surface after passing through the lens. As can be seen from fig. 17 to 20, the optical imaging lens according to the fourth embodiment of the present application can achieve good imaging quality.
EXAMPLE five
Fig. 21 is a schematic structural diagram of an optical imaging lens according to a fifth embodiment of the present application, and as shown in fig. 21, the imaging lens assembly includes, in order from an object side surface to an image side surface, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.
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 negative power, and has a convex object-side surface S5 and a concave image-side surface S6; the fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8; the fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In the fifth embodiment of the present application, the parameters of each relation are as explained in the first embodiment, and the values of each relation are as listed in table 12 below.
TABLE 12
Table 13 shows basic parameters of the imaging lens assembly according to the fifth embodiment of the present application, where the radius of curvature, the thickness, and the focal length are all in millimeter units.
Watch 13
The following table 14 shows the coefficients of the high-order terms a4, a6, A8, a10, a12, a14, a16, a18 and a20 for each of the aspherical surfaces S1 to S10 of each of the aspherical lenses used in the fifth embodiment of the present application. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 1.8052E-01 | -1.3230E-01 | 9.5861E-02 | -5.3218E-02 | 2.1167E-02 | -5.7283E-03 | 9.9466E-04 | -9.9343E-05 | 4.3189E-06 |
| S2 | 4.0504E-01 | 1.8229E-01 | -3.6770E+00 | 2.3774E+01 | -7.9635E+01 | 1.5636E+02 | -1.6886E+02 | 8.1921E+01 | -3.9719E+00 |
| S3 | -7.3997E-02 | -2.3267E-02 | 1.0261E+00 | -3.1514E+01 | 2.6275E+02 | -1.1259E+03 | 2.6611E+03 | -3.3082E+03 | 1.6823E+03 |
| S4 | 4.3008E-02 | -1.7623E+00 | 2.0210E+01 | -9.8999E+01 | 2.7111E+02 | -4.6169E+02 | 4.9017E+02 | -2.9904E+02 | 7.9813E+01 |
| S5 | -7.2447E-01 | -1.5154E-01 | -5.1198E+00 | 7.1480E+01 | -3.2006E+02 | 7.3597E+02 | -9.5387E+02 | 6.5647E+02 | -1.8348E+02 |
| S6 | 5.5874E-01 | -5.3523E+00 | 1.9921E+01 | -4.4600E+01 | 6.3283E+01 | -5.6352E+01 | 2.9489E+01 | -7.6737E+00 | 5.7819E-01 |
| S7 | 8.3152E-02 | 3.5466E+00 | -1.8517E+01 | 4.8695E+01 | -8.2688E+01 | 9.5733E+01 | -7.2821E+01 | 3.2430E+01 | -6.3332E+00 |
| S8 | 9.7997E-02 | -6.5846E-02 | -3.3273E-02 | -4.6051E-01 | 8.3872E-01 | -8.0471E-01 | 6.5758E-01 | -4.1642E-01 | 1.2626E-01 |
| S9 | 1.1711E+00 | -3.2274E+00 | 4.5002E+00 | -3.5622E+00 | 4.0356E-01 | 2.2176E+00 | -2.1944E+00 | 8.8790E-01 | -1.3700E-01 |
| S10 | 1.1632E+00 | -3.0819E+00 | 4.4729E+00 | -4.2763E+00 | 2.7530E+00 | -1.1709E+00 | 3.1331E-01 | -4.7548E-02 | 3.1083E-03 |
TABLE 14
Fig. 22 is a diagram illustrating an axial chromatic aberration curve of an optical imaging lens according to a fifth embodiment of the present application, which shows the convergent focus deviation of light rays with different wavelengths after passing through the lens. Fig. 23 shows astigmatism curves of an optical imaging lens according to a fifth embodiment of the present application, which represent meridional field curvature and sagittal field curvature. Fig. 24 shows distortion curves of the optical imaging lens in the fifth embodiment of the present application, which show distortion magnitude values corresponding to different image heights. Fig. 25 is a chromatic aberration of magnification curve of an optical imaging lens according to a fifth embodiment of the present application, which shows the deviation of different image heights of light rays on an imaging surface after passing through the lens. As can be seen from fig. 22 to 25, the optical imaging lens according to the fifth embodiment of the present application can achieve good imaging quality.
EXAMPLE six
Fig. 26 is a schematic structural diagram of an optical imaging lens according to a sixth embodiment of the present application, and as shown in fig. 26, the imaging lens assembly includes, in order from an object side surface to an image side surface, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.
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 negative power, and has a convex object-side surface S5 and a concave image-side surface S6; the fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8; the fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In the sixth embodiment of the present application, the parameters of each relation are as explained in the first embodiment, and the numerical values of each relation are as listed in the following table 15.
Watch 15
Table 16 shows basic parameters of the optical imaging lens according to the sixth embodiment of the present application, where the radius of curvature, the thickness, and the focal length are all in millimeter units.
| Flour mark | Surface type | Radius of curvature | Thickness of | Focal length | Refractive index | Coefficient of dispersion | Coefficient of cone |
| OBJ | Spherical surface | All-round | All-round | ||||
| S1 | Aspherical surface | -3.3676 | 0.9850 | 0.9167 | |||
| S2 | Aspherical surface | 2.7501 | 0.5584 | -2.62 | 1.55 | 56.1 | -4.0044 |
| STO | Spherical surface | 0.1386 | |||||
| S3 | Aspherical surface | 2.6526 | 0.9073 | 1.33 | 1.55 | 56.1 | 2.3465 |
| S4 | Aspherical surface | -0.8811 | 0.0479 | -0.9157 | |||
| S5 | Aspherical surface | 3.4733 | 0.1500 | -2.99 | 1.68 | 19.2 | -0.4903 |
| S6 | Aspherical surface | 1.2565 | 0.0792 | -20.5896 | |||
| S7 | Aspherical surface | 2612.0334 | 1.1047 | 1.77 | 1.55 | 56.1 | -90.0000 |
| S8 | Aspherical surface | -0.9687 | 0.1055 | -2.4091 | |||
| S9 | Aspherical surface | 0.8432 | 0.2726 | -2.70 | 1.67 | 20.4 | -1.1732 |
| S10 | Aspherical surface | 0.4999 | 0.4537 | -2.9462 | |||
| S11 | Spherical surface | All-round | 0.2100 | 1.51 | 64.2 | ||
| S12 | Spherical surface | All-round | 0.2279 | ||||
| S13 | Spherical surface | All-round |
TABLE 16
Table 17 below shows the coefficients of the high-order terms a4, a6, A8, a10, a12, a14, a16, a18, and a20 for each aspherical surface S1 to S10 that can be used for each aspherical lens in the sixth embodiment of the present application. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 2.0255E-01 | -1.4851E-01 | 1.0626E-01 | -5.7055E-02 | 2.1775E-02 | -5.6030E-03 | 9.1750E-04 | -8.5910E-05 | 3.5170E-06 |
| S2 | 4.7275E-01 | 7.1775E-03 | -5.3401E-01 | -1.0461E+01 | 1.3358E+02 | -6.1884E+02 | 1.4837E+03 | -1.8288E+03 | 9.2604E+02 |
| S3 | -2.9611E-02 | -4.1636E-01 | 7.3542E+00 | -1.1558E+02 | 9.5428E+02 | -4.6220E+03 | 1.3098E+04 | -2.0274E+04 | 1.3284E+04 |
| S4 | 8.5425E-02 | 1.8158E+00 | -1.6587E+01 | 7.0036E+01 | -1.7935E+02 | 2.7020E+02 | -2.2280E+02 | 8.0556E+01 | -4.0031E+00 |
| S5 | -1.3264E+00 | 6.7768E+00 | -3.6775E+01 | 1.4742E+02 | -4.0087E+02 | 7.0821E+02 | -7.7958E+02 | 4.7925E+02 | -1.2246E+02 |
| S6 | 1.6841E-01 | -1.1755E+00 | 2.9681E+00 | -4.0546E+00 | 3.6590E+00 | -3.4694E+00 | 3.4414E+00 | -2.1197E+00 | 5.3305E-01 |
| S7 | 8.3144E-01 | -2.2838E+00 | 3.5966E+00 | -3.0626E+00 | 9.1394E-01 | 7.1483E-01 | -8.2350E-01 | 3.2150E-01 | -4.7004E-02 |
| S8 | -1.4435E-01 | 1.0661E+00 | -4.1711E+00 | 9.5590E+00 | -1.3394E+01 | 1.1460E+01 | -5.8076E+00 | 1.6026E+00 | -1.8621E-01 |
| S9 | -1.2661E+00 | 2.6269E+00 | -7.0170E+00 | 1.3997E+01 | -1.7903E+01 | 1.4195E+01 | -6.7577E+00 | 1.7734E+00 | -1.9844E-01 |
| S10 | -3.0274E-01 | -8.1268E-02 | 7.0222E-01 | -9.8021E-01 | 7.2138E-01 | -3.1743E-01 | 8.4038E-02 | -1.2408E-02 | 7.8786E-04 |
TABLE 17
Fig. 27 is a diagram illustrating an axial chromatic aberration curve of an optical imaging lens according to a sixth embodiment of the present application, which shows the convergent focus deviation of light rays with different wavelengths after passing through the lens. Fig. 28 shows astigmatism curves of an optical imaging lens according to a sixth embodiment of the present application, which represent meridional field curvature and sagittal field curvature. Fig. 29 is a distortion curve of an optical imaging lens according to a sixth embodiment of the present application, which shows distortion magnitude values corresponding to different image heights. Fig. 30 is a chromatic aberration of magnification curve of an optical imaging lens according to a sixth embodiment of the present application, which shows the deviation of different image heights of light rays on an imaging surface after passing through the lens. As can be seen from fig. 27 to 30, the optical imaging lens according to the sixth embodiment of the present application can achieve good imaging quality.
EXAMPLE seven
Fig. 31 is a schematic structural diagram of an optical imaging lens assembly according to a seventh embodiment of the present application, and as shown in fig. 31, the imaging lens assembly includes, in order from an object side surface to an image side surface, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.
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 negative power, and has a convex object-side surface S5 and a concave image-side surface S6; the fourth lens element E4 has positive 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 concave image-side surface S10. The light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In the seventh embodiment of the present application, the parameters of each relation are as explained in the first embodiment, and the values of each relation are as listed in table 18 below.
Watch 18
Table 19 shows basic parameters of an optical imaging lens according to the seventh embodiment of the present application, in which the radius of curvature, the thickness, and the focal length are all in millimeter units.
| Flour mark | Surface type | Radius of curvature | Thickness of | Focal length | Refractive index | Coefficient of dispersion | Coefficient of cone |
| OBJ | Spherical surface | All-round | All-round | ||||
| S1 | Aspherical surface | -2.3159 | 1.0959 | -0.0583 | |||
| S2 | Aspherical surface | 3.3696 | 0.9537 | -2.51 | 1.53 | 66.0 | 1.6654 |
| STO | Spherical surface | -0.0052 | |||||
| S3 | Aspherical surface | 1.9894 | 1.0158 | 1.22 | 1.57 | 63.3 | 1.5773 |
| S4 | Aspherical surface | -0.8116 | 0.0300 | -0.8255 | |||
| S5 | Aspherical surface | 5.7205 | 0.1500 | -3.26 | 1.76 | 27.6 | -78.8139 |
| S6 | Aspherical surface | 1.1260 | 0.1195 | -13.6136 | |||
| S7 | Aspherical surface | -9.9105 | 0.6501 | 1.30 | 1.49 | 70.4 | 89.0439 |
| S8 | Aspherical surface | -2.9959 | 0.3488 | -2.3466 | |||
| S9 | Aspherical surface | 0.5692 | 0.2309 | -1.49 | 1.75 | 29.0 | -1.3900 |
| S10 | Aspherical surface | 0.5523 | 0.6888 | -1.3699 | |||
| S11 | Spherical surface | All-round | 0.2100 | 1.51 | 64.2 | ||
| S12 | Spherical surface | All-round | 0.1742 | ||||
| S13 | Spherical surface | All-round |
Watch 19
The following table 20 shows the high-order term coefficients a4, a6, A8, a10, a12, a14, a16, a18, and a20 of each aspherical surface S1 to S10 that can be used for each aspherical lens in the seventh embodiment of the present application. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
Fig. 32 is a diagram illustrating an axial chromatic aberration curve of an optical imaging lens according to a seventh embodiment of the present application, which shows the convergent focus deviation of light rays with different wavelengths after passing through the lens. Fig. 33 is an astigmatism curve showing meridional field curvature and sagittal field curvature of the optical imaging lens according to the seventh embodiment of the present application. Fig. 34 is a distortion curve of the optical imaging lens according to the seventh embodiment of the present application, which shows distortion magnitude values corresponding to different image heights. Fig. 35 is a chromatic aberration of magnification curve of an optical imaging lens according to a seventh embodiment of the present application, which shows the deviation of different image heights of light rays on an imaging surface after passing through the lens. As can be seen from fig. 32 to 35, the optical imaging lens according to the seventh embodiment of the present application can achieve good imaging quality.
Example eight
Fig. 36 is a schematic structural diagram of an optical imaging lens according to an eighth embodiment of the present application, and as shown in fig. 36, the imaging lens assembly includes, in order from an object side surface to an image side surface, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.
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 negative power, and has a convex object-side surface S5 and a concave 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 concave image-side surface S10. The light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In the eighth embodiment of the present application, the parameters of each relation are as explained in the first embodiment, and the numerical values of each relation are as listed in the following table 21.
TABLE 21
Table 22 shows basic parameters of the optical imaging lens according to the eighth embodiment of the present application, where the radius of curvature, the thickness, and the focal length are all in millimeter units.
TABLE 22
Table 23 below shows the coefficients of the high-order terms a4, a6, A8, a10, a12, a14, a16, a18, and a20 for each aspherical surface S1 to S10 that can be used for each aspherical lens in the eighth embodiment of the present application. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 2.1248E-01 | -1.4486E-01 | 9.1946E-02 | -4.3881E-02 | 1.4983E-02 | -3.4942E-03 | 5.2622E-04 | -4.5994E-05 | 1.7744E-06 |
| S2 | 2.7551E-01 | 4.2281E-01 | -3.6696E+00 | 1.4746E+01 | -3.5429E+01 | 5.3498E+01 | -4.9303E+01 | 2.5298E+01 | -5.4942E+00 |
| S3 | -4.8539E-02 | -3.5196E+00 | 9.2639E+01 | -1.4587E+03 | 1.3912E+04 | -8.2180E+04 | 2.9328E+05 | -5.7933E+05 | 4.8603E+05 |
| S4 | 4.2913E-01 | -2.3751E+00 | 1.4946E+01 | -8.5376E+01 | 3.4200E+02 | -9.2574E+02 | 1.5760E+03 | -1.5075E+03 | 6.1478E+02 |
| S5 | -6.9185E-01 | -7.3520E-01 | 2.1427E+00 | 4.5392E+01 | -3.3031E+02 | 1.0392E+03 | -1.7906E+03 | 1.6337E+03 | -6.1214E+02 |
| S6 | 4.6655E-01 | -4.8267E+00 | 2.1965E+01 | -5.9668E+01 | 1.0399E+02 | -1.1717E+02 | 8.1871E+01 | -3.1661E+01 | 4.9813E+00 |
| S7 | 7.8170E-01 | -8.4428E-01 | -5.8426E+00 | 3.1625E+01 | -7.7904E+01 | 1.1193E+02 | -9.5185E+01 | 4.4402E+01 | -8.7794E+00 |
| S8 | -2.5899E+00 | 1.1475E+01 | -3.9326E+01 | 9.7495E+01 | -1.6975E+02 | 1.9979E+02 | -1.5081E+02 | 6.5761E+01 | -1.2570E+01 |
| S9 | -1.8412E+00 | 5.3903E+00 | -1.5367E+01 | 3.4222E+01 | -5.7445E+01 | 6.9467E+01 | -5.6779E+01 | 2.7753E+01 | -6.0347E+00 |
| S10 | -9.0634E-01 | 1.4502E+00 | -1.9045E+00 | 1.8699E+00 | -1.2998E+00 | 6.1149E-01 | -1.8407E-01 | 3.1992E-02 | -2.4484E-03 |
TABLE 23
Fig. 37 is an axial chromatic aberration curve of an optical imaging lens according to an eighth embodiment of the present application, which shows the convergent focus deviation of light rays with different wavelengths after passing through the lens. Fig. 38 shows astigmatism curves of an optical imaging lens according to an eighth embodiment of the present application, which represent meridional field curvature and sagittal field curvature. Fig. 39 is a distortion curve of the optical imaging lens according to the eighth embodiment of the present application, which shows distortion magnitude values corresponding to different image heights. Fig. 40 is a chromatic aberration of magnification curve of an optical imaging lens according to an eighth embodiment of the present application, which shows the deviation of different image heights of light rays on an imaging surface after passing through the lens. As can be seen from fig. 37 to 40, the optical imaging lens according to the eighth embodiment of the present application can achieve good imaging quality.
In summary, in examples 1-8 of the present application, the optical parameters are as follows in Table 24:
table 24 in examples 1 to 8 of the present application, each conditional expression satisfies the conditions of table 25 below:
TABLE 25
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. An optical imaging lens includes five lens elements, in order from an object side to an image side:
the first lens with negative focal power, the object side surface of the first lens is a concave surface, and the image side surface of the first lens is a concave surface;
a second lens having an optical power;
a third lens having a negative optical power;
a fourth lens having an optical power;
a fifth lens having optical power;
wherein the effective focal length f1 of the first lens and half of the Semi-FOV of the maximum field angle of the optical imaging system satisfy: the effective focal length f1 of the first lens and half of the maximum field angle Semi-FOV of the optical imaging system satisfy: 9mm2<f12×tan(Semi-FOV)<15mm2。
2. The optical imaging lens of claim 1, wherein an effective focal length f4 of the fourth lens and an effective focal length f5 of the fifth lens satisfy: i f5/f 4I < 3.0.
3. The optical imaging lens of claim 1, wherein the half Semi-FOV of the maximum field angle of the optical imaging system and the maximum effective radius DT11 of the object-side surface of the first lens satisfy: 0.5< tan (Semi-FOV)/DT11< 1.0.
4. The optical imaging lens of claim 1, wherein an on-axis distance SAG41 between an intersection point of the fourth lens object-side surface and the optical axis to an effective radius vertex of the fourth lens object-side surface and an on-axis distance SAG42 between an intersection point of the fourth lens image-side surface and the optical axis to an effective radius vertex of the fourth lens image-side surface satisfy: 2.0< | SAG42/SAG41| < 7.0.
5. The optical imaging lens of claim 1, wherein an on-axis distance TTL from an object side surface of the first lens to an imaging surface and a combined focal length f123 of the first lens, the second lens, and the third lens satisfy: 1.5< TTL/f123< 3.0.
6. The optical imaging lens of claim 1, wherein a distance BFL between an image-side surface of a last lens of the optical imaging system and an image plane on an optical axis and a center thickness CT5 of the fifth lens on the optical axis satisfy: 1.0< BFL/CT5< 5.0.
7. An optical imaging lens includes five lens elements, in order from an object side to an image side:
the first lens with negative focal power, the object side surface of the first lens is a concave surface, and the image side surface of the first lens is a concave surface;
a second lens having an optical power;
a third lens having a negative optical power;
a fourth lens having an optical power;
a fifth lens having optical power;
wherein an on-axis distance TTL from the object-side surface of the first lens element to the image plane and a combined focal length f123 of the first lens element, the second lens element, and the third lens element satisfy: 1.5< TTL/f123< 3.0; and the distance BFL from the image side surface of the last lens of the optical imaging system to the imaging surface on the optical axis and the central thickness CT5 of the fifth lens on the optical axis satisfy the following conditions: 1.0< BFL/CT5< 5.0.
8. The optical imaging lens of claim 7, wherein the effective focal length f1 of the first lens and half Semi-FOV of the maximum field angle of the optical imaging system satisfy: 9mm2<f12×tan(Semi-FOV)<15mm2。
9. An optical imaging lens includes five lens elements, in order from an object side to an image side:
the first lens with negative focal power, the object side surface of the first lens is a concave surface, and the image side surface of the first lens is a concave surface;
a second lens having an optical power;
a third lens having a negative optical power;
a fourth lens having an optical power;
a fifth lens having optical power;
wherein the edge thickness ET5 of the fifth lens and the central thickness CT5 of the fifth lens on the optical axis satisfy: 1.5< ET5/CT5< 3.5; and an on-axis distance SAG41 between an intersection point of the fourth lens object-side surface and the optical axis to an effective radius vertex of the fourth lens object-side surface and an on-axis distance SAG42 between an intersection point of the fourth lens image-side surface and the optical axis to an effective radius vertex of the fourth lens image-side surface satisfy: 2.0< | SAG42/SAG41| < 7.0.
10. The optical imaging lens of claim 9, wherein the Semi-FOV of the maximum field angle of the optical imaging system and the maximum effective radius DT11 of the object-side surface of the first lens satisfy: 0.5< tan (Semi-FOV)/DT11< 1.0; and an air interval T23 of the second lens and the third lens on the optical axis, the air interval T34 of the third lens and the fourth lens on the optical axis and a center thickness CT4 of the fourth lens on the optical axis satisfying: (T23+ T34). times.2 < CT 4.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI765660B (en) * | 2021-02-09 | 2022-05-21 | 鴻海精密工業股份有限公司 | Optical imaging system,acquisition module and electronic equipment |
| CN114815150A (en) * | 2022-04-08 | 2022-07-29 | 惠州市星聚宇光学有限公司 | Optical lens and optical lens module |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI765660B (en) * | 2021-02-09 | 2022-05-21 | 鴻海精密工業股份有限公司 | Optical imaging system,acquisition module and electronic equipment |
| CN114911031A (en) * | 2021-02-09 | 2022-08-16 | 三营超精密光电(晋城)有限公司 | Optical imaging system, image capturing module and electronic device |
| CN114815150A (en) * | 2022-04-08 | 2022-07-29 | 惠州市星聚宇光学有限公司 | Optical lens and optical lens module |
| CN114815150B (en) * | 2022-04-08 | 2024-04-02 | 惠州市星聚宇光学有限公司 | Optical lens and optical lens module |
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