CN210954461U - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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CN210954461U
CN210954461U CN201921881832.3U CN201921881832U CN210954461U CN 210954461 U CN210954461 U CN 210954461U CN 201921881832 U CN201921881832 U CN 201921881832U CN 210954461 U CN210954461 U CN 210954461U
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lens
optical imaging
optical
axis
imaging lens
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张锐
贺凌波
李建军
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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Abstract

The application provides an optical imaging lens, has mutually perpendicular's X optical axis and Y optical axis, and this optical imaging lens includes that the thing side along the X optical axis sets gradually to picture side: the prism comprises an incident surface, a reflecting surface and an emergent surface, wherein the normal of the incident surface is parallel to the Y optical axis, the reflecting surface forms an angle of 45 degrees with the Y optical axis and the X optical axis, and the normal of the emergent surface is parallel to the X optical axis; a diaphragm; 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 a positive optical power; a third lens with positive focal power, wherein the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface; a fourth lens having an optical power; and hasA fifth lens having an optical power; radius of curvature R of incident surfaceG1Radius of curvature R with the exit surfaceG2Satisfy-3.0 < RG1/RG2< -2.5; the half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens satisfies ImgH > 5.0 mm.

Description

Optical imaging lens
Technical Field
The application relates to the field of optical elements, in particular to an optical imaging lens.
Background
In recent years, the spread of portable electronic products such as mobile phones, tablets, and digital cameras has led to a vigorous development of optical imaging lens technology. The current market puts forward higher and higher requirements on the imaging function of portable electronic products, for example, the optical imaging lens is expected to have a larger focal length, a higher magnification and a better long-range shooting effect. For better imaging quality, the optical imaging lens is usually designed to be more complex and larger in size. Since the portable electronic device is expected to have a small size, the size of the optical imaging lens provided thereon is also limited, and when designing the optical imaging lens, an optical imaging lens having both a small size and good imaging quality can be manufactured without simply scaling down the optical imaging lens having good imaging quality on an equal scale.
For example, in the mobile phone industry, multiple optical imaging lenses tend to be used for multiple shooting, different optical characteristics are respectively highlighted among the multiple optical imaging lenses, wherein one telephoto lens with a longer focal length is usually included, and due to the limitation of the thickness of the mobile phone, the length of the telephoto lens on the mobile phone is more strictly limited, so that the optical characteristics of the telephoto lens are limited, and the imaging effects of the mobile phone, such as background blurring, object magnification and the like, are limited. Therefore, how to realize a telephoto lens having good optical characteristics and capable of meeting the miniaturization requirement is a problem to be solved.
SUMMERY OF THE UTILITY MODEL
The present application provides an optical imaging lens including a prism. This application is through increasing the light transmission route that reflection prism comes the deflection lens group for light is longitudinal propagation completely no longer. The arrangement can convert the volume of the module originally stacked on the longitudinal axis into the transverse direction, so that the long focal length can be realized under the condition of meeting the light and thin characteristics of the mobile phone.
The application provides an optical imaging lens, has mutually perpendicular's X optical axis and Y optical axis, and optical imaging lens includes that the thing side along the X optical axis sets gradually to picture side: a prism, the prism comprising: the optical lens comprises an incident surface, a reflecting surface and an emergent surface, wherein the normal of the incident surface is parallel to a Y optical axis, the reflecting surface forms an angle of 45 degrees with the Y optical axis and an X optical axis, and the normal of the emergent surface is parallel to the X optical axis; a diaphragm; the first lens with negative focal power, the object side surface of the first lens can be a concave surface, and the image side surface of the first lens can be a concave surface; a second lens having a positive optical power; the object side surface of the third lens can be a convex surface, and the image side surface of the third lens can be a convex surface; a fourth lens having an optical power; and a fifth lens having optical power.
According to the embodiments of the present application, the incident surface may be a convex surface, and the exit surface may be a convex surface.
According to an embodiment of the present application, the radius of curvature R of the entrance faceG1Radius of curvature R with the exit surfaceG2Can satisfy that R is more than-3.0G1/RG2＜-2.5。
According to the embodiment of the present application, ImgH, which is half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens, may satisfy ImgH > 5.0 mm.
According to the embodiment of the application, the effective focal length f2 of the second lens and the effective focal length f3 of the third lens can satisfy 1.0 < f2/f3 < 4.0.
According to the embodiment of the application, the curvature radius R1 of the object side surface of the first lens and the effective focal length f1 of the first lens can satisfy 3.5 < R1/f1 < 4.5.
According to an embodiment of the present application, a radius of curvature R2 of the image-side surface of the first lens, a radius of curvature R3 of the object-side surface of the second lens, and a radius of curvature R5 of the object-side surface of the third lens may satisfy 1.0 < (R2+ R3)/R5 < 1.5.
According to the embodiment of the application, the central thickness CT3 of the third lens on the X-axis and the central thickness CT4 of the fourth lens on the X-axis can satisfy 1.0 < CT4/CT3 < 3.5.
According to the embodiment of the present application, the separation distance T23 of the second lens and the third lens on the X-axis and the separation distance T45 of the fourth lens and the fifth lens on the X-axis may satisfy 1.0 < T45/T23 < 2.5.
According to an embodiment of the present application, a center thickness CT1 of the first lens on the X-axis, a center thickness CT2 of the second lens on the X-axis, and a center thickness CT5 of the fifth lens on the X-axis may satisfy 1.5 < (CT1+ CT2)/CT5 < 3.5.
According to the embodiment of the application, the central thickness CT4 of the fourth lens on the X-ray axis and the edge thickness ET4 of the fourth lens can satisfy 0.5 < ET4/CT4 < 1.5.
According to the embodiment of the present application, in a direction parallel to the X-optical axis, a distance SAG11 from an intersection point of the object-side surface of the first lens and the X-optical axis to an effective radius vertex of the object-side surface of the first lens and a distance SAG12 from an intersection point of the image-side surface of the first lens and the X-optical axis to an effective radius vertex of the image-side surface of the first lens may satisfy 1.0 < | SAG12/SAG11| < 3.0.
According to the embodiment of the present application, the combined focal length f12 of the first and second lenses and the combined focal length f34 of the third and fourth lenses may satisfy 0.5 < | f34/f12| < 2.0.
The application provides an optical imaging lens including prism and multi-disc (for example, five) lens, through setting up the prism for become 90 degrees contained angles between the incident direction of light and the array direction of multi-disc lens, thereby make optical imaging lens reduce in the size of light incident direction. Meanwhile, the optical imaging lens group has the beneficial effects of miniaturization, high imaging quality and long focal length 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
The above and other advantages of embodiments of the present application will become apparent from the detailed description with reference to the following drawings, which are intended to illustrate and not to limit exemplary embodiments of the present application. In the drawings:
fig. 1 is a schematic configuration diagram showing an optical imaging lens according to embodiment 1 of the present application;
fig. 2A to 2D sequentially show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve according to embodiment 1 of the present application;
fig. 3 is a schematic configuration diagram showing an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4D sequentially show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve according to embodiment 2 of the present application;
fig. 5 is a schematic configuration diagram showing an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6D sequentially show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve according to embodiment 3 of the present application;
fig. 7 is a schematic configuration diagram showing an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8D sequentially show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve according to embodiment 4 of the present application;
fig. 9 is a schematic configuration diagram showing an optical imaging lens according to embodiment 5 of the present application;
fig. 10A to 10D sequentially show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve according to embodiment 5 of the present application;
fig. 11 is a schematic configuration diagram showing an optical imaging lens according to embodiment 6 of the present application;
fig. 12A to 12D sequentially show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve according to embodiment 6 of the present application;
fig. 13 is a schematic configuration diagram showing an optical imaging lens according to embodiment 7 of the present application;
fig. 14A to 14D sequentially show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve according to embodiment 7 of the present application;
fig. 15 is a schematic configuration diagram showing an optical imaging lens according to embodiment 8 of the present application;
fig. 16A to 16D sequentially show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve according to embodiment 8 of the present application.
Detailed Description
For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Accordingly, the first lens of the optical imaging 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. In each lens, the surface closest to the subject is referred to as the object side of the lens; in each lens, the surface closest to the imaging plane is referred to as 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: the lens system comprises a prism, a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are arranged in sequence from an object side to an image side of an X optical axis. The prism is used for changing the direction of the light path and comprises a reflecting surface with an included angle of 45 degrees with the X-ray axis, so that the light rays incident to the prism along the direction vertical to the X-ray axis change by 90 degrees in the direction after passing through the prism. The prism further includes an exit surface located in an image-side direction of the reflection surface along the X-axis, and an incident surface located in an object-side direction of the reflection surface perpendicular to the X-axis. The optical imaging lens further has a Y-axis perpendicular to the X-axis, and the incident surface and the reflective surface may be disposed along a direction from an object side to an image side of the Y-axis. Illustratively, the incident surface and the reflecting surface are both spherical surfaces or aspherical surfaces that are rotationally symmetric, and then a normal line of the incident surface refers to a normal line at an intersection of a rotation axis of the incident surface and the incident surface, and a normal line of the incident surface may be parallel to the Y optical axis, and a normal line of the exit surface refers to a normal line at an intersection of a rotation axis of the exit surface and the exit surface, and a normal line of the exit surface may be parallel to the X optical axis. Specifically, the reflection surface may be located at an intersection of the Y optical axis and the X optical axis. Specifically, the normal of the incident surface coincides with the Y optical axis; the normal of the exit surface coincides with the X-ray axis. The five lenses are arranged in sequence from the emergent surface of the prism to the image side along the X-ray axis, and air spaces can be reserved between every two adjacent lenses and between the prism and the first lens. For example, the incident surface may be a convex surface, and the exit surface may be a convex surface.
The reflection prism is used for refracting and converting incident light rays, so that the direction of the incident light rays is approximately vertical to the arrangement direction of the lenses, the length space of the mobile phone is used as the installation space and the use space of the lenses, and the limitation of the thickness of the mobile phone to the focal length of the lens is avoided.
In an exemplary embodiment, the optical imaging lens may further include at least one diaphragm. The diaphragm may be disposed at an appropriate position as required, for example, between the prism and the first lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located at the imaging surface.
In an exemplary embodiment, the first lens may have a negative optical power, and the object side surface thereof may be concave and the image side surface thereof may be concave; the second lens may have a positive optical power; the third lens can have positive focal power, and the object side surface of the third lens can be a convex surface, and the image side surface of the third lens can be a convex surface; the fourth lens has positive focal power or negative focal power; the fifth lens has positive power or negative power. By configuring the focal power and the surface type of each lens, the spherical aberration and chromatic aberration of the optical imaging lens can be effectively corrected, the focal power can be prevented from being excessively concentrated on a single lens, the sensitivity of the optical imaging lens is effectively reduced, and the processability of each lens can be improved.
In exemplary embodiments, the present application providesThe optical imaging lens can satisfy the conditional expression that R is more than-3.0G1/RG2< -2.5 >, wherein RG1Is the radius of curvature of the incident surface, RG2Is the radius of curvature of the exit face. More specifically, RG1And RG2Can satisfy that R is more than-2.85G1/RG2< -2.65. The ratio of the curvature radius of the incident surface of the prism to the curvature radius of the emergent surface of the prism is controlled, so that the sensitivity of the optical imaging lens is favorably reduced, and the imaging effect of the optical imaging lens is favorably improved.
In an exemplary embodiment, the optical imaging lens provided herein may satisfy the conditional expression ImgH > 5.0mm, where ImgH is half of a diagonal length of an effective pixel area on an imaging plane of the optical imaging lens. More specifically, ImgH may satisfy 5.0mm < ImgH < 6.05 mm. By controlling the image height of the optical imaging lens, the optical imaging lens can have a larger imaging area and a good imaging effect while the miniaturization of the optical imaging lens is ensured.
In an exemplary embodiment, the optical imaging lens provided by the present application may satisfy the conditional expression 1.0 < f2/f3 < 4.0, where f2 is an effective focal length of the second lens and f3 is an effective focal length of the third lens. More specifically, f2 and f3 satisfy 1.4 < f2/f3 < 3.6. By controlling the ratio of the effective focal lengths of the second lens and the third lens, the coma aberration and astigmatism generated by the second lens and the coma aberration and astigmatism generated by the third lens are correspondingly and effectively balanced.
In an exemplary embodiment, the optical imaging lens provided by the present application may satisfy the conditional expression 3.5 < R1/f1 < 4.5, where R1 is a radius of curvature of an object side surface of the first lens and f1 is an effective focal length of the first lens. More specifically, R1 and f1 satisfy 3.55 < R1/f1 < 4.45. By controlling the ratio of the curvature radius of the object side surface of the first lens to the effective focal length of the first lens, the spherical aberration, chromatic aberration and chromatic dispersion generated by the prism can be effectively balanced.
In an exemplary embodiment, the optical imaging lens provided herein may satisfy the conditional expression 1.0 < (R2+ R3)/R5 < 1.5, where R2 is a radius of curvature of an image-side surface of the first lens, R3 is a radius of curvature of an object-side surface of the second lens, and R5 is a radius of curvature of an object-side surface of the third lens. More specifically, R2, R3 and R5 may satisfy 1.05 < (R2+ R3)/R5 < 1.40. The curvature radius of the image side surface of the first lens, the curvature radius of the object side surface of the second lens and the curvature radius of the object side surface of the third lens are matched, so that a light path in the optical imaging lens has a better deflection form, the relative illumination of the imaging surface of the optical imaging lens is improved, and the imaging quality of the optical imaging lens can be effectively improved.
In an exemplary embodiment, the optical imaging lens provided by the present application may satisfy the conditional expression 1.0 < CT4/CT3 < 3.5, where CT3 is a central thickness of the third lens on the X-ray axis and CT4 is a central thickness of the fourth lens on the X-ray axis. More specifically, CT3 and CT4 satisfy 1.15 < CT4/CT3 < 3.20. By controlling the ratio of the central thickness of the fourth lens to the central thickness of the third lens, each lens can be easily injection molded, so that the processability of the optical imaging lens is improved, and the optical imaging lens has better imaging quality.
In an exemplary embodiment, the optical imaging lens provided by the present application may satisfy the conditional expression 1.0 < T45/T23 < 2.5, where T23 is a separation distance of the second lens and the third lens on the X-axis, and T45 is a separation distance of the fourth lens and the fifth lens on the X-axis. More specifically, T23 and T45 satisfy 1.01 < T45/T23 < 2.21. By controlling the ratio of the air interval between the fourth lens and the fifth lens to the air interval between the second lens and the third lens, the field curvature of the optical imaging lens can be effectively ensured, so that the off-axis field of view of the optical imaging lens has good imaging quality, and the total optical length of the optical imaging lens can be effectively compressed.
In an exemplary embodiment, the optical imaging lens provided herein may satisfy the conditional expression 1.5 < (CT1+ CT2)/CT5 < 3.5, where CT1 is a central thickness of the first lens on the X-axis, CT2 is a central thickness of the second lens on the X-axis, and CT5 is a central thickness of the fifth lens on the X-axis. More specifically, CT1, CT2, and CT5 may satisfy 1.85 < (CT1+ CT2)/CT5 < 3.03. The center thickness of the first lens, the center thickness of the second lens and the center thickness of the fifth lens are matched, so that the thickness sensitivity of the optical imaging lens is favorably and effectively reduced, and the chromatic aberration of the optical imaging lens is favorably corrected.
In an exemplary embodiment, the optical imaging lens provided by the present application may satisfy the conditional expression 0.5 < ET4/CT4 < 1.5, where CT4 is a center thickness of the fourth lens on the X-optical axis and ET4 is an edge thickness of the fourth lens. More specifically, CT4 and ET4 satisfy 0.76 < ET4/CT4 < 1.42. By controlling the ratio of the edge thickness of the fourth lens to the center thickness thereof, it is advantageous to have good workability of the fourth lens and to bring the optical total length of the optical imaging lens within a desired range.
In an exemplary embodiment, the optical imaging lens provided herein may satisfy the conditional expression 1.0 < | SAG12/SAG11| < 3.0, where SAG11 is a distance from an intersection of an object-side surface of the first lens and an X optical axis to an effective radius vertex of the object-side surface of the first lens in a direction parallel to an X optical axis, and SAG12 is a distance from an intersection of an image-side surface of the first lens and the X optical axis to an effective radius vertex of the image-side surface of the first lens in a direction parallel to the X optical axis. More specifically, SAG11 and SAG12 can satisfy 1.30 < | SAG12/SAG11| < 2.83. By controlling the ratio of the rise of the two side surfaces of the first lens in the direction parallel to the X-ray axis, the deflection angle of the light rays at the first lens is favorably reduced, and meanwhile, the aberration of the marginal field of view is favorably reduced.
In an exemplary embodiment, the optical imaging lens provided herein may satisfy the conditional expression 0.5 < | f34/f12| < 2.0, where f12 is a combined focal length of the first lens and the second lens, and f34 is a combined focal length of the third lens and the fourth lens. More specifically, f12 and f34 satisfy 0.8 < | f34/f12| < 1.7. By controlling the ratio of the combined focal length of the third lens and the fourth lens to the combined focal length of the first lens and the second lens, the chromatic aberration of the smaller optical imaging lens is facilitated, and meanwhile, the spherical aberration and the coma aberration of the optical imaging lens are reduced.
The optical imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, the five lenses 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 lens can be effectively reduced, the sensitivity of the lens can be reduced, and the machinability of the lens can be improved, so that the camera lens group is more beneficial to production and processing and can be suitable for portable electronic products.
In the embodiment of the present application, an aspherical mirror surface is often used as the mirror surface of each lens. At least one mirror surface of the object side surface of the first lens to the image side surface of the fifth 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 during imaging can be eliminated as much as possible, thereby improving the imaging quality.
Alternatively, at least one of the object-side surface and the image-side surface of each of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens may be aspheric. Alternatively, at least one of the incident surface and the exit surface of the prism may be aspherical. For example, the object-side surface and the image-side surface of the first lens element are aspheric, and the object-side surface of the second lens element is aspheric; for example, the image-side surface of the first lens element is aspheric, the object-side surface of the second lens element is aspheric, and the image-side surface of the third lens element and the object-side surface of the fourth lens element are aspheric; for example, the incident surface and the exit surface are aspheric, and the object-side surface and the image-side surface of the fifth lens element are aspheric. Alternatively, the object-side surface and the image-side surface of each of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens, and the incident surface and the exit surface of the prism may be aspheric.
Specific examples of an optical imaging lens applicable to the above-described embodiments are further described below with reference to the drawings.
Example 1
Referring to fig. 1 to fig. 2D, the optical imaging lens of the present embodiment, in order from an object side to an image side along an optical axis, includes: the lens comprises a prism G, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a filter E6. A stop STO may be provided between the prism G and the first lens E1. Any two adjacent lenses may have an air space therebetween, and the prism G and the first lens E1 may also have an air space therebetween.
The light incident on the incident surface G1 of the prism G along the Y-axis changes in direction after passing through the reflecting surface G3 of the prism G and exits from the exit surface G2 of the prism G along the X-axis. The incident surface G1 is convex, the exit surface G2 is convex, and the reflecting surface G3 may be planar. 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 concave image-side surface S4. The third lens element E3 has positive power, and has a convex 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 negative power, and has a concave object-side surface S9 and a convex image-side surface S10. Filter E6 has an object side S11 and an image side S12. The optical imaging lens of the present embodiment has an imaging surface S13. Light from the object sequentially passes through the surfaces (G1 to S12) and is imaged on the imaging surface S13.
Table 1 shows a basic parameter table of the optical imaging lens of the present embodiment, in which the units of the curvature radius, the thickness, and the focal length are all millimeters (mm), specifically as follows:
TABLE 1
Figure BDA0002259532430000061
Figure BDA0002259532430000071
Here, the value of half ImgH of the length of the diagonal line of the effective pixel area on the imaging plane S13 is 5.10mm, the value of the maximum half field angle Semi-FOV of the optical imaging lens is 18.6 °, and the value of the f-number Fno of the optical imaging lens is 2.94.
The object-side surface and the image-side surface of any one of the prism G, the incident surface G1, the exit surface G2, and the first lens E1 to the fifth lens E5 of the optical imaging lens are aspheric, and the surface shape x of each aspheric lens can be defined by, but is not limited to, the following aspheric formula:
Figure BDA0002259532430000072
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 coefficients A of the high-order terms which can be used for the aspherical surfaces G1, G2 and S1 to S10 according to example 14、A6、A8、A10、A12、A14、A16、A18And A20。
TABLE 2
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
G1 -1.0141E-01 -5.1090E-03 -2.8122E-04 -1.8527E-05 -3.0426E-06 -9.4708E-07 -1.8957E-07 -4.9589E-07 -5.5007E-07
G2 5.7023E-03 6.0009E-04 -6.0944E-05 -2.3651E-06 -1.2686E-05 1.3550E-05 -4.8443E-06 1.5830E-06 9.6058E-07
S1 -2.1142E-02 5.2172E-03 5.0013E-04 -2.3549E-04 1.3520E-05 2.2080E-05 -1.4126E-05 3.7444E-06 2.5664E-07
S1 -1.3067E-01 -1.5490E-02 2.3882E-03 -3.0199E-03 -1.5024E-04 -9.9567E-05 -9.2227E-05 1.8056E-05 -7.7652E-06
S3 -1.7779E-01 -2.7605E-02 -1.6696E-04 -3.0410E-03 -4.0738E-04 -2.0287E-04 -1.0481E-04 9.7550E-07 -9.7713E-06
S4 -1.0255E-01 -8.1156E-03 -2.4658E-03 -1.9112E-06 -8.7602E-05 2.9634E-05 2.0433E-05 4.4166E-06 1.2178E-06
S5 -2.1466E-01 2.8264E-02 -2.7342E-03 -3.7803E-03 -3.2273E-04 1.3092E-04 3.7919E-05 1.9486E-05 7.7306E-06
S6 5.1842E-01 -5.7476E-02 1.3628E-04 -3.3261E-03 1.7607E-04 3.8762E-04 7.5370E-05 1.1046E-04 -1.4084E-05
S7 8.9638E-01 -1.1176E-01 9.9377E-05 4.4434E-04 1.3278E-03 5.0679E-04 8.1061E-05 1.2009E-04 -2.0336E-05
S8 7.1909E-02 -6.2343E-03 2.0236E-03 5.0953E-04 2.1289E-04 4.1627E-06 -4.0806E-06 -2.0544E-06 -3.7958E-08
S9 -7.1896E-01 9.1884E-02 -1.0059E-02 3.1567E-03 -8.2832E-04 8.2083E-05 -1.1088E-04 -1.1379E-05 -1.0755E-05
S10 -2.2198E-01 6.0187E-02 -9.9541E-03 2.5426E-03 -8.5756E-04 1.6101E-04 -1.1422E-04 3.6850E-06 -1.3851E-05
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the optical imaging lens. Fig. 2B shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 1, which represents a deviation of different image heights on the imaging plane after light passes through the optical imaging lens. Fig. 2C shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of embodiment 1. Fig. 2D shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 2A to 2D, 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 4D, and in the present exemplary embodiment and the following embodiments, a description of a portion similar to that of the optical imaging lens of embodiment 1 will be omitted for the sake of brevity.
Referring to fig. 3, the optical imaging lens of the present embodiment, in order from an object side to an image side along an optical axis, includes: the lens comprises a prism G, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a filter E6. A stop STO may be provided between the prism G and the first lens E1. Any two adjacent lenses may have an air space therebetween, and the prism G and the first lens E1 may also have an air space therebetween.
The light incident on the incident surface G1 of the prism G along the Y-axis changes in direction after passing through the reflecting surface G3 of the prism G and exits from the exit surface G2 of the prism G along the X-axis. The incident surface G1 is convex, the exit surface G2 is convex, and the reflecting surface G3 may be planar. 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 concave image-side surface S4. The third lens element E3 has positive power, and has a convex 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 negative power, and has a concave object-side surface S9 and a convex image-side surface S10. Filter E6 has an object side S11 and an image side S12. The optical imaging lens of the present embodiment has an imaging surface S13. Light from the object sequentially passes through the surfaces (G1 to S12) and is imaged on the imaging surface S13.
In the present embodiment, the value of the f-number Fno of the optical imaging lens is 2.97, the value of half ImgH of the diagonal length of the effective pixel area on the imaging plane S13 is 5.10mm, and the value of half Semi-FOV of the maximum angle of view is 17.6 °.
Table 3 shows a basic parameter table of the optical imaging lens of the present embodiment, in which the units of the curvature radius, the thickness, and the focal length are all millimeters (mm), and table 4 shows high-order term coefficients of each aspheric surface that can be used in the optical imaging lens of the present embodiment, wherein each aspheric surface type can be defined by the foregoing formula (1), specifically as follows:
TABLE 3
Figure BDA0002259532430000081
TABLE 4
Figure BDA0002259532430000082
Figure BDA0002259532430000091
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of the present embodiment, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the optical imaging lens. Fig. 4B shows a chromatic aberration of magnification curve of the optical imaging lens of the present embodiment, which represents a deviation of different image heights on the imaging surface after light passes through the optical imaging lens. Fig. 4C shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of the present embodiment. Fig. 4D shows a distortion curve of the optical imaging lens of the present embodiment, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 4A to 4D, the optical imaging lens provided in the present embodiment can achieve good imaging quality.
Example 3
An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D.
Referring to fig. 5, the optical imaging lens of the present embodiment, in order from an object side to an image side along an optical axis, includes: the lens comprises a prism G, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a filter E6. A stop STO may be provided between the prism G and the first lens E1. Any two adjacent lenses may have an air space therebetween, and the prism G and the first lens E1 may also have an air space therebetween.
The light incident on the incident surface G1 of the prism G along the Y-axis changes in direction after passing through the reflecting surface G3 of the prism G and exits from the exit surface G2 of the prism G along the X-axis. The incident surface G1 is convex, the exit surface G2 is convex, and the reflecting surface G3 may be planar. 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 concave image-side surface S4. The third lens element E3 has positive power, and has a convex 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 concave image-side surface S10. Filter E6 has an object side S11 and an image side S12. The optical imaging lens of the present embodiment has an imaging surface S13. Light from the object sequentially passes through the surfaces (G1 to S12) and is imaged on the imaging surface S13.
In the present embodiment, the value of the f-number Fno of the optical imaging lens is 2.97, the value of half ImgH of the diagonal length of the effective pixel area on the imaging plane S13 is 5.10mm, and the value of half Semi-FOV of the maximum angle of view is 18.4 °.
Table 5 shows a basic parameter table of the optical imaging lens of the present embodiment, in which the units of the curvature radius, the thickness, and the focal length are all millimeters (mm), and table 6 shows high-order term coefficients of each aspheric surface that can be used in the optical imaging lens of the present embodiment, wherein each aspheric surface type can be defined by the foregoing formula (1), specifically as follows:
TABLE 5
Figure BDA0002259532430000092
Figure BDA0002259532430000101
TABLE 6
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
G1 -9.4021E-02 -3.8357E-03 -6.6434E-04 -1.2625E-04 -2.5966E-05 -5.6636E-06 -2.1455E-06 -1.5366E-06 -1.6115E-06
G2 -6.7224E-03 1.3828E-03 -2.3429E-04 -1.4768E-04 1.0227E-04 -3.4020E-05 8.2691E-06 -1.8398E-06 3.1217E-07
S1 -2.8480E-02 -1.9567E-03 2.6580E-03 -9.2480E-04 7.9309E-04 -1.8015E-04 8.7392E-05 -1.8575E-06 5.0742E-06
S1 -1.2951E-01 -1.7685E-02 6.7751E-03 -2.7286E-03 1.0402E-03 -2.6661E-04 4.9254E-05 -3.2386E-06 -2.6625E-07
S3 -2.0402E-01 -1.1062E-02 4.3137E-03 -1.5516E-03 6.3717E-04 -1.3436E-04 2.2706E-05 2.7310E-06 -1.4734E-08
S4 -1.2815E-01 5.4674E-03 -1.6823E-03 6.0134E-04 -1.1885E-04 5.8593E-05 -1.4403E-05 5.3667E-06 -3.2616E-07
S5 -2.0051E-01 2.5134E-02 -6.5023E-03 -9.6376E-04 -4.0807E-04 -1.1217E-04 -8.6190E-05 -5.5106E-06 -1.8945E-06
S6 4.8813E-01 6.9670E-03 -3.8147E-03 -2.5677E-03 -1.0853E-03 -4.0545E-04 -2.6700E-04 2.9532E-05 -1.2327E-05
S7 6.1276E-01 -5.0308E-02 3.4553E-03 5.1344E-05 -1.9799E-04 -1.8663E-04 -1.2642E-04 1.0592E-04 -2.4411E-05
S8 1.0740E-02 -1.5817E-03 7.7368E-04 7.5738E-05 2.3129E-05 -2.8271E-06 -8.7121E-06 -1.4247E-07 -2.3468E-07
S9 -1.0994E+00 2.4950E-01 4.8560E-04 1.0045E-02 -6.1053E-04 -2.2230E-03 -1.4000E-03 -3.6363E-04 -2.0579E-05
S10 -1.4431E+00 1.5094E-01 -1.4916E-02 1.4827E-02 6.5239E-03 3.5027E-03 1.0658E-03 2.6124E-04 5.1815E-05
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of the present embodiment, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the optical imaging lens. Fig. 6B shows a chromatic aberration of magnification curve of the optical imaging lens of the present embodiment, which represents a deviation of different image heights on the imaging plane after light passes through the optical imaging lens. Fig. 6C shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of the present embodiment. Fig. 6D shows a distortion curve of the optical imaging lens of the present embodiment, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 6A to 6D, the optical imaging lens provided in the present embodiment can achieve good imaging quality.
Example 4
An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D.
Referring to fig. 7, the optical imaging lens of the present embodiment, in order from an object side to an image side along an optical axis, includes: the lens comprises a prism G, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a filter E6. A stop STO may be provided between the prism G and the first lens E1. Any two adjacent lenses may have an air space therebetween, and the prism G and the first lens E1 may also have an air space therebetween.
The light incident on the incident surface G1 of the prism G along the Y-axis changes in direction after passing through the reflecting surface G3 of the prism G and exits from the exit surface G2 of the prism G along the X-axis. The incident surface G1 is convex, the exit surface G2 is convex, and the reflecting surface G3 may be planar. 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 concave image-side surface S4. The third lens element E3 has positive power, and has a convex 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 negative power, and has a concave object-side surface S9 and a concave image-side surface S10. Filter E6 has an object side S11 and an image side S12. The optical imaging lens of the present embodiment has an imaging surface S13. Light from the object sequentially passes through the surfaces (G1 to S12) and is imaged on the imaging surface S13.
In the present embodiment, the value of the f-number Fno of the optical imaging lens is 2.97, the value of half ImgH of the diagonal length of the effective pixel area on the imaging plane S13 is 5.10mm, and the value of half Semi-FOV of the maximum angle of view is 18.2 °.
Table 7 shows a basic parameter table of the optical imaging lens of the present embodiment, in which the units of the curvature radius, the thickness, and the focal length are all millimeters (mm), and table 8 shows high-order term coefficients of each aspheric surface that can be used in the optical imaging lens of the present embodiment, wherein each aspheric surface type can be defined by the foregoing formula (1), specifically as follows:
TABLE 7
Figure BDA0002259532430000111
TABLE 8
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
G1 -9.7116E-02 -4.5695E-03 -2.5276E-04 -2.0526E-05 -2.4832E-06 -2.7018E-07 1.3050E-07 -3.3210E-07 1.6583E-07
G2 2.7416E-03 4.0249E-04 -1.2421E-04 -4.3714E-05 5.6940E-05 -3.3772E-05 1.4230E-05 -5.5106E-06 1.5495E-06
S1 -2.9876E-02 8.5155E-03 9.7086E-04 -5.7455E-04 3.9869E-04 -1.4389E-04 5.6141E-05 -1.4833E-05 5.7807E-06
S1 -1.5622E-01 -1.6178E-02 5.8521E-03 -5.0265E-03 9.6669E-04 -5.3372E-04 1.8389E-06 -2.3609E-05 5.6981E-06
S3 -1.9965E-01 -2.7815E-02 3.3864E-03 -4.1471E-03 3.5533E-04 -4.0113E-04 -9.6120E-05 -2.0810E-05 -3.0365E-06
S4 -1.2040E-01 -5.2675E-03 -2.2475E-03 3.5061E-04 -2.2018E-04 3.6161E-05 -2.7539E-05 9.3320E-06 5.1152E-06
S5 -1.8119E-01 1.3993E-02 -1.4692E-03 -2.3319E-04 -1.6141E-05 -2.5570E-05 1.8992E-05 3.4852E-05 5.9869E-06
S6 5.1708E-01 -3.3830E-02 3.9785E-03 -8.4319E-04 -6.0490E-04 -2.8822E-04 -2.1425E-05 1.4243E-04 -3.8971E-05
S7 7.4686E-01 -7.0691E-02 3.7112E-03 -1.5745E-03 -1.1894E-03 -4.8322E-04 -4.2001E-05 1.3585E-04 -8.5538E-05
S8 1.5662E-02 -6.9537E-04 1.6532E-03 -7.9532E-05 -1.9904E-04 -1.4432E-04 -5.5064E-05 -6.1119E-06 -1.6001E-06
S9 -7.2051E-01 7.3503E-02 -6.3916E-03 2.5601E-03 -6.7484E-04 -4.6571E-05 -1.5254E-04 -4.7311E-05 -1.9664E-05
S10 -3.5913E-01 4.8782E-02 -7.4913E-03 1.6668E-03 -3.9359E-04 9.6101E-05 -2.2045E-05 4.7257E-06 -6.4617E-07
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of the present embodiment, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the optical imaging lens. Fig. 8B shows a chromatic aberration of magnification curve of the optical imaging lens of the present embodiment, which represents a deviation of different image heights on the imaging plane after light passes through the optical imaging lens. Fig. 8C shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of the present embodiment. Fig. 8D shows a distortion curve of the optical imaging lens of the present embodiment, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 8A to 8D, the optical imaging lens provided in the present embodiment can achieve good imaging quality.
Example 5
An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Referring to fig. 9, the optical imaging lens of the present embodiment, in order from an object side to an image side along an optical axis, includes: the lens comprises a prism G, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a filter E6. A stop STO may be provided between the prism G and the first lens E1. Any two adjacent lenses may have an air space therebetween, and the prism G and the first lens E1 may also have an air space therebetween.
The light incident on the incident surface G1 of the prism G along the Y-axis changes in direction after passing through the reflecting surface G3 of the prism G and exits from the exit surface G2 of the prism G along the X-axis. The incident surface G1 is convex, the exit surface G2 is convex, and the reflecting surface G3 may be planar. 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 concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. Filter E6 has an object side S11 and an image side S12. The optical imaging lens of the present embodiment has an imaging surface S13. Light from the object sequentially passes through the surfaces (G1 to S12) and is imaged on the imaging surface S13.
In the present embodiment, the value of the f-number Fno of the optical imaging lens is 2.94, the value of half ImgH of the diagonal length of the effective pixel area on the imaging plane S13 is 5.10mm, and the value of half Semi-FOV of the maximum angle of view is 18.6 °.
Table 9 shows a basic parameter table of the optical imaging lens of the present embodiment, in which the units of the curvature radius, the thickness, and the focal length are all millimeters (mm), and table 10 shows high-order term coefficients of respective aspherical surfaces that can be used in the optical imaging lens of the present embodiment, wherein each aspherical surface type can be defined by the foregoing formula (1), specifically as follows:
TABLE 9
Figure BDA0002259532430000121
Watch 10
Figure BDA0002259532430000122
Figure BDA0002259532430000131
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of the present embodiment, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the optical imaging lens. Fig. 10B shows a chromatic aberration of magnification curve of the optical imaging lens of the present embodiment, which represents a deviation of different image heights on the imaging plane after light passes through the optical imaging lens. Fig. 10C shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of the present embodiment. Fig. 10D shows a distortion curve of the optical imaging lens of the present embodiment, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 10A to 10D, the optical imaging lens provided in the present embodiment can achieve good imaging quality.
Example 6
An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Referring to fig. 11, the optical imaging lens of the present embodiment, in order from an object side to an image side along an optical axis, includes: the lens comprises a prism G, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a filter E6. A stop STO may be provided between the prism G and the first lens E1. Any two adjacent lenses may have an air space therebetween, and the prism G and the first lens E1 may also have an air space therebetween.
The light incident on the incident surface G1 of the prism G along the Y-axis changes in direction after passing through the reflecting surface G3 of the prism G and exits from the exit surface G2 of the prism G along the X-axis. The incident surface G1 is convex, the exit surface G2 is convex, and the reflecting surface G3 may be planar. 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 concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. Filter E6 has an object side S11 and an image side S12. The optical imaging lens of the present embodiment has an imaging surface S13. Light from the object sequentially passes through the surfaces (G1 to S12) and is imaged on the imaging surface S13.
In the present embodiment, the value of the f-number Fno of the optical imaging lens is 2.94, the value of half ImgH of the diagonal length of the effective pixel area on the imaging plane S13 is 5.42mm, and the value of half Semi-FOV of the maximum angle of view is 18.6 °.
Table 11 shows a basic parameter table of the optical imaging lens of the present embodiment, in which the units of the curvature radius, the thickness, and the focal length are all millimeters (mm), and table 12 shows high-order term coefficients of respective aspherical surfaces that can be used in the optical imaging lens of the present embodiment, wherein each aspherical surface type can be defined by the foregoing formula (1), specifically as follows:
TABLE 11
Figure BDA0002259532430000132
Figure BDA0002259532430000141
TABLE 12
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
G1 -1.0755E-01 -5.6035E-03 -2.9383E-04 -2.0244E-05 -4.0055E-06 -1.5365E-06 -2.1820E-07 -7.5109E-07 -7.0725E-07
G2 2.0936E-03 2.0445E-03 -6.3636E-04 1.8754E-04 -8.2530E-05 4.0033E-05 -1.3906E-05 3.4233E-06 5.8133E-07
S1 -4.8174E-02 5.7108E-03 7.8115E-04 -3.1004E-04 -4.5900E-05 8.1182E-05 -3.9481E-05 9.5757E-06 -8.3166E-07
S1 -1.5916E-01 -1.5515E-02 5.1685E-03 -3.2967E-03 3.3155E-04 5.9288E-05 -1.0082E-04 3.4014E-05 -5.4301E-06
S3 -2.2889E-01 -2.3681E-02 1.5270E-03 -3.1085E-03 6.3500E-05 -7.5837E-05 -7.1999E-05 9.4688E-06 -4.7166E-06
S4 -1.4388E-01 -1.7351E-03 -3.4632E-03 7.5588E-05 -2.7864E-04 4.6365E-05 7.3637E-06 -2.0357E-06 5.5915E-06
S5 -2.0618E-01 5.6612E-02 -2.3067E-03 -1.0619E-03 -4.6313E-04 -1.4788E-04 6.4595E-05 -4.3560E-06 -4.9193E-06
S6 5.1621E-01 -2.8046E-02 1.7736E-02 4.3594E-04 -1.1473E-03 1.1228E-05 -1.6405E-04 1.7971E-05 -1.1794E-05
S7 8.8913E-01 -1.3553E-01 2.1629E-02 -2.3534E-03 -1.1882E-03 6.0134E-04 -2.6930E-04 7.3654E-05 -2.3264E-05
S8 2.2649E-01 1.0703E-02 -2.3712E-03 -5.5634E-04 -7.6112E-06 -2.2864E-06 -7.0970E-06 -9.6273E-07 2.6457E-07
S9 -1.0174E+00 2.0957E-01 -4.4023E-02 1.1842E-02 -4.5866E-03 7.4800E-04 -6.6513E-04 -4.9751E-06 -8.3622E-05
S10 -5.1744E-01 1.4652E-01 -4.1676E-02 1.2392E-02 -4.9976E-03 1.0941E-03 -7.6908E-04 4.4632E-05 -1.0475E-04
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of the present embodiment, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the optical imaging lens. Fig. 12B shows a chromatic aberration of magnification curve of the optical imaging lens of the present embodiment, which represents a deviation of different image heights on the imaging plane after light passes through the optical imaging lens. Fig. 12C shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of the present embodiment. Fig. 12D shows a distortion curve of the optical imaging lens of the present embodiment, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 12A to 12D, the optical imaging lens provided in the present embodiment can achieve good imaging quality.
Example 7
An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Referring to fig. 13, the optical imaging lens of the present embodiment, in order from an object side to an image side along an optical axis, includes: the lens comprises a prism G, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a filter E6. A stop STO may be provided between the prism G and the first lens E1. Any two adjacent lenses may have an air space therebetween, and the prism G and the first lens E1 may also have an air space therebetween.
The light incident on the incident surface G1 of the prism G along the Y-axis changes in direction after passing through the reflecting surface G3 of the prism G and exits from the exit surface G2 of the prism G along the X-axis. The incident surface G1 is convex, the exit surface G2 is convex, and the reflecting surface G3 may be planar. 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 convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has positive power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. Filter E6 has an object side S11 and an image side S12. The optical imaging lens of the present embodiment has an imaging surface S13. Light from the object sequentially passes through the surfaces (G1 to S12) and is imaged on the imaging surface S13.
In the present embodiment, the value of the f-number Fno of the optical imaging lens is 2.94, the value of half ImgH of the diagonal length of the effective pixel area on the imaging plane S13 is 5.10mm, and the value of half Semi-FOV of the maximum angle of view is 18.8 °.
Table 13 shows a basic parameter table of the optical imaging lens of the present embodiment, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm), and table 14 shows high-order term coefficients of respective aspherical surfaces that can be used in the optical imaging lens of the present embodiment, wherein each aspherical surface type can be defined by the foregoing formula (1), specifically as follows:
watch 13
Figure BDA0002259532430000151
TABLE 14
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
G1 -1.1868E-01 -5.6524E-03 -4.4115E-04 -6.2676E-05 -1.0259E-05 -1.7024E-06 -3.6166E-07 5.3010E-08 -2.2386E-07
G2 6.8791E-03 -5.4309E-03 1.8779E-03 -6.7293E-04 2.1896E-04 -6.4226E-05 2.0495E-05 -5.2452E-06 2.2761E-06
S1 -4.5774E-02 6.6740E-03 2.6575E-03 -6.5922E-04 3.5041E-04 -5.5378E-05 2.8732E-05 -3.6356E-06 2.3616E-06
S1 -1.5747E-01 7.4250E-03 1.1361E-03 -1.0431E-03 2.3274E-04 -1.1629E-04 2.5669E-05 -1.0392E-05 4.6012E-06
S3 -1.1510E-01 -1.5998E-02 -4.1429E-03 -1.4057E-03 -5.4037E-04 -1.8639E-04 -6.7928E-05 -2.3864E-05 -3.9044E-06
S4 -1.1372E-01 -1.7618E-02 -7.3643E-03 -1.3719E-03 -5.8820E-04 -1.7149E-04 -5.8825E-05 -1.6043E-05 -2.8032E-06
S5 -2.7800E-01 4.3751E-02 1.4522E-03 8.7148E-04 1.6746E-04 -2.1825E-04 -1.9995E-04 -5.1022E-05 -6.1488E-07
S6 5.7746E-01 -3.6589E-02 1.5247E-02 -4.5051E-03 2.1213E-03 -1.0878E-03 -6.9778E-05 -1.3239E-04 -5.1354E-06
S7 1.0767E+00 -9.8066E-02 1.8338E-02 -8.1380E-03 2.4337E-03 -1.2725E-03 1.8646E-04 -5.7421E-05 7.2230E-06
S8 9.7004E-02 -8.3892E-03 7.9724E-03 -1.1625E-03 -9.8672E-05 -1.2068E-04 -3.5198E-05 -6.9795E-06 -2.4630E-07
S9 -8.9425E-01 9.5663E-02 -6.4460E-03 2.2066E-03 -1.0779E-03 1.1805E-05 -6.2590E-05 2.0950E-06 3.6069E-06
S10 -7.4524E-01 1.3271E-01 -2.1155E-02 3.7825E-03 -1.3840E-03 3.6895E-04 -9.9296E-05 3.2074E-05 -1.4257E-06
Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of the present embodiment, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the optical imaging lens. Fig. 14B shows a chromatic aberration of magnification curve of the optical imaging lens of the present embodiment, which represents a deviation of different image heights on the imaging plane after light passes through the optical imaging lens. Fig. 14C shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of the present embodiment. Fig. 14D shows a distortion curve of the optical imaging lens of the present embodiment, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 14A to 14D, the optical imaging lens provided in the present embodiment can achieve good imaging quality.
Example 8
An optical imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16D. Referring to fig. 15, the optical imaging lens of the present embodiment, in order from an object side to an image side along an optical axis, includes: the lens comprises a prism G, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a filter E6. A stop STO may be provided between the prism G and the first lens E1. Any two adjacent lenses may have an air space therebetween, and the prism G and the first lens E1 may also have an air space therebetween.
The light incident on the incident surface G1 of the prism G along the Y-axis changes in direction after passing through the reflecting surface G3 of the prism G and exits from the exit surface G2 of the prism G along the X-axis. The incident surface G1 is convex, the exit surface G2 is convex, and the reflecting surface G3 may be planar. 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 convex 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 negative power, and has a concave object-side surface S9 and a concave image-side surface S10. Filter E6 has an object side S11 and an image side S12. The optical imaging lens of the present embodiment has an imaging surface S13. Light from the object sequentially passes through the surfaces (G1 to S12) and is imaged on the imaging surface S13.
In the present embodiment, the value of the f-number Fno of the optical imaging lens is 2.94, the value of half ImgH of the diagonal length of the effective pixel area on the imaging plane S13 is 6.00mm, and the value of half Semi-FOV of the maximum angle of view is 18.8 °.
Table 15 shows a basic parameter table of the optical imaging lens of the present embodiment, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm), and table 16 shows high-order term coefficients of respective aspherical surfaces that can be used in the optical imaging lens of the present embodiment, wherein each aspherical surface type can be defined by the foregoing formula (1), specifically as follows:
watch 15
Figure BDA0002259532430000161
TABLE 16
Figure BDA0002259532430000162
Figure BDA0002259532430000171
Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of the present embodiment, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the optical imaging lens. Fig. 16B shows a chromatic aberration of magnification curve of the optical imaging lens of the present embodiment, which represents a deviation of different image heights on the imaging plane after light passes through the optical imaging lens. Fig. 16C shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of the present embodiment. Fig. 16D shows a distortion curve of the optical imaging lens of the present embodiment, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 16A to 16D, the optical imaging lens provided in the present embodiment can achieve good imaging quality.
In summary, examples 1 to 8 correspond to satisfy the relationship shown in table 17 below.
TABLE 17
Conditional expression (A) example 1 2 3 4 5 6 7 8
RG1/RG2 -2.83 -2.80 -2.82 -2.77 -2.79 -2.77 -2.69 -2.73
f2/f3 3.33 3.21 2.68 3.57 3.01 3.18 1.63 1.43
R1/f1 4.37 3.98 4.43 3.89 3.59 3.65 4.13 4.14
(R2+R3)/R5 1.09 1.16 1.15 1.24 1.38 1.37 1.21 1.26
CT4/CT3 1.43 1.66 1.88 1.20 3.11 2.80 1.65 1.60
T45/T23 2.20 1.92 1.21 1.97 1.54 1.57 1.02 1.35
(CT1+CT2)/CT5 2.82 2.30 1.86 2.43 2.70 2.65 3.02 2.66
ET4/CT4 1.13 1.14 1.40 1.16 0.80 0.78 1.21 1.31
|SAG12/SAG11| 2.62 1.94 2.80 2.00 1.45 1.34 2.30 2.27
|f34/f12| 0.96 1.04 1.64 1.01 0.92 0.94 0.83 1.51
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 five lenses are exemplified in the embodiment, the optical imaging lens is not limited to include five lenses. The optical imaging lens may also include other numbers of lenses, if desired.
In an exemplary embodiment, the present application also provides an image pickup apparatus provided with an electron photosensitive element, which may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS), to form an image. The camera device can be a stand-alone camera device such as a digital camera, or a camera module integrated on a mobile electronic device such as a mobile phone. The image pickup apparatus is equipped with the optical imaging lens described above.
Exemplary embodiments of the present application are described above with reference to the accompanying drawings. It should be understood by those skilled in the art that the above-described embodiments are merely examples for illustrative purposes and are not intended to limit the scope of the present application. Any modifications, equivalents and the like which come within the teachings of this application and the scope of the claims should be considered to be within the scope of this application.

Claims (20)

1. The optical imaging lens is characterized by having an X optical axis and a Y optical axis which are perpendicular to each other, and the optical imaging lens comprises the following components which are arranged in sequence from an object side to an image side along the X optical axis:
the prism comprises an incident surface, a reflecting surface and an emergent surface, wherein the normal of the incident surface is parallel to the Y optical axis, the reflecting surface forms an angle of 45 degrees with the Y optical axis and the X optical axis, and the normal of the emergent surface is parallel to the X optical axis;
a diaphragm;
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 a positive optical power;
a third lens with positive focal power, wherein the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface;
a fourth lens having an optical power; and
a fifth lens having optical power;
radius of curvature R of the incident surfaceG1Radius of curvature R with said exit surfaceG2Satisfy-3.0 < RG1/RG2＜-2.5；
The half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfies ImgH > 5.0 mm.
2. The optical imaging lens of claim 1, wherein the effective focal length f2 of the second lens and the effective focal length f3 of the third lens satisfy 1.0 < f2/f3 < 4.0.
3. The optical imaging lens of claim 1, wherein a radius of curvature R1 of an object side surface of the first lens and an effective focal length f1 of the first lens satisfy 3.5 < R1/f1 < 4.5.
4. The optical imaging lens of claim 1, wherein the radius of curvature R2 of the image-side surface of the first lens, the radius of curvature R3 of the object-side surface of the second lens, and the radius of curvature R5 of the object-side surface of the third lens satisfy 1.0 < (R2+ R3)/R5 < 1.5.
5. The optical imaging lens of claim 1, wherein a central thickness CT3 of the third lens on the X-axis and a central thickness CT4 of the fourth lens on the X-axis satisfy 1.0 < CT4/CT3 < 3.5.
6. The optical imaging lens according to claim 1, wherein a separation distance T23 on the X-optical axis between the second lens and the third lens and a separation distance T45 on the X-optical axis between the fourth lens and the fifth lens satisfy 1.0 < T45/T23 < 2.5.
7. The optical imaging lens according to claim 1, wherein a center thickness CT1 of the first lens on the X-axis, a center thickness CT2 of the second lens on the X-axis, and a center thickness CT5 of the fifth lens on the X-axis satisfy 1.5 < (CT1+ CT2)/CT5 < 3.5.
8. The optical imaging lens of claim 1, wherein a center thickness CT4 of the fourth lens on the X-ray axis and an edge thickness ET4 of the fourth lens satisfy 0.5 < ET4/CT4 < 1.5.
9. The optical imaging lens according to claim 1, wherein in a direction parallel to the X-optical axis, a distance SAG11 from an intersection point of an object-side surface of the first lens and the X-optical axis to a vertex of an effective radius of the object-side surface of the first lens and a distance SAG12 from an intersection point of an image-side surface of the first lens and the X-optical axis to a vertex of an effective radius of the image-side surface of the first lens satisfy 1.0 < | SAG12/SAG11| < 3.0.
10. The optical imaging lens according to any one of claims 1 to 9, characterized in that a combined focal length f12 of the first lens and the second lens and a combined focal length f34 of the third lens and the fourth lens satisfy 0.5 < | f34/f12| < 2.0.
11. The optical imaging lens is characterized by having an X optical axis and a Y optical axis which are perpendicular to each other, and the optical imaging lens comprises the following components which are arranged in sequence from an object side to an image side along the X optical axis:
a prism, the prism comprising: the optical lens comprises an incident surface, a reflecting surface and an emergent surface, wherein the normal of the incident surface is parallel to the Y optical axis, the reflecting surface forms an angle of 45 degrees with the Y optical axis and the X optical axis, and the normal of the emergent surface is parallel to the X optical axis;
a diaphragm;
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 a positive optical power;
a third lens with positive focal power, wherein the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface;
a fourth lens having an optical power; and
a fifth lens having optical power;
the effective focal length f2 of the second lens and the effective focal length f3 of the third lens satisfy 1.0 < f2/f3 < 4.0;
the half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfies ImgH > 5.0 mm.
12. The optical imaging lens of claim 11, wherein a radius of curvature R1 of an object side surface of the first lens and an effective focal length f1 of the first lens satisfy 3.5 < R1/f1 < 4.5.
13. According to the rightThe optical imaging lens as claimed in claim 12, wherein the radius of curvature R of the incident surfaceG1Radius of curvature R with said exit surfaceG2Satisfy-3.0 < RG1/RG2＜-2.5。
14. The optical imaging lens of claim 11, wherein the radius of curvature R2 of the image-side surface of the first lens, the radius of curvature R3 of the object-side surface of the second lens, and the radius of curvature R5 of the object-side surface of the third lens satisfy 1.0 < (R2+ R3)/R5 < 1.5.
15. The optical imaging lens of claim 11, wherein a central thickness CT3 of the third lens on the X-axis and a central thickness CT4 of the fourth lens on the X-axis satisfy 1.0 < CT4/CT3 < 3.5.
16. The optical imaging lens according to claim 11, wherein a separation distance T23 on the X-optical axis between the second lens and the third lens and a separation distance T45 on the X-optical axis between the fourth lens and the fifth lens satisfy 1.0 < T45/T23 < 2.5.
17. The optical imaging lens of claim 11, wherein a center thickness CT1 of the first lens on the X-axis, a center thickness CT2 of the second lens on the X-axis, and a center thickness CT5 of the fifth lens on the X-axis satisfy 1.5 < (CT1+ CT2)/CT5 < 3.5.
18. The optical imaging lens of claim 11, wherein a center thickness CT4 of the fourth lens on the X-ray axis and an edge thickness ET4 of the fourth lens satisfy 0.5 < ET4/CT4 < 1.5.
19. The optical imaging lens of claim 11, wherein in a direction parallel to the X-optical axis, a distance SAG11 from an intersection point of an object-side surface of the first lens and the X-optical axis to a vertex of an effective radius of the object-side surface of the first lens and a distance SAG12 from an intersection point of an image-side surface of the first lens and the X-optical axis to a vertex of an effective radius of the image-side surface of the first lens satisfy 1.0 < | SAG12/SAG11| < 3.0.
20. The optical imaging lens according to any one of claims 11 to 19, characterized in that a combined focal length f12 of the first lens and the second lens and a combined focal length f34 of the third lens and the fourth lens satisfy 0.5 < | f34/f12| < 2.0.
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