CN114265179B - Optical imaging lens and camera module - Google Patents
Optical imaging lens and camera module Download PDFInfo
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- CN114265179B CN114265179B CN202111630749.0A CN202111630749A CN114265179B CN 114265179 B CN114265179 B CN 114265179B CN 202111630749 A CN202111630749 A CN 202111630749A CN 114265179 B CN114265179 B CN 114265179B
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Abstract
The invention discloses an optical imaging lens and a camera module, which belong to the technical field of optical imaging, wherein the optical imaging lens comprises a first lens with positive focal power, and the object side surface of the first lens is a convex surface near an optical axis; a second lens having optical power, an image side surface of which is concave near the optical axis; a third lens having optical power; a fourth lens having optical power; a fifth lens element with negative refractive power having a concave object-side surface near the optical axis and a concave image-side surface near the optical axis; wherein, the optical imaging lens satisfies the following conditional expression: TTL/ImgH <1.55, -0.6< CT4/f5< -0.2,0.75< SAG42/SAG51<1.37. The optical imaging lens provided by the invention can meet the requirement of small TTL, and can obtain higher imaging performance.
Description
Technical Field
The invention relates to the technical field of optical imaging, in particular to an optical imaging lens and a camera module.
Background
In recent years, with the rapid development of portable electronic devices such as smartphones and tablet computers, there is an increasing demand for a small-sized camera head size while pursuing good performance of the portable electronic devices such as smartphones and tablet computers.
The image height of the existing miniaturized camera is generally smaller, the head is larger, and the requirement of a small head of a lens cannot be met while a large image plane is ensured. Currently, the full screen is gradually developed into one of the mainstream screens of portable electronic devices such as smart phones and tablet computers, which are circulated in the market. For functional purposes, the full screen typically leaves only a small fraction of the light transmitted by the front camera, and therefore places more stringent demands on the size of the front camera head. How to reduce the size of the head of the camera on the basis of ensuring a large image plane and image quality is one development direction of the current small-head lens.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an optical imaging lens and a camera module, which can enable the optical imaging lens to meet the requirement of small TTL and obtain higher imaging performance.
In a first aspect, an optical imaging lens sequentially includes, from an object side to an image side along an optical axis:
a first lens having positive optical power, an object side surface of which is convex near an optical axis;
a second lens having optical power, an image side surface of which is concave near the optical axis;
A third lens having optical power;
a fourth lens having optical power;
a fifth lens element with negative refractive power having a concave object-side surface near the optical axis and a concave image-side surface near the optical axis;
wherein, the optical imaging lens satisfies the following conditional expression:
TTL/ImgH<1.55,-0.6<CT4/f5<-0.2,0.75<SAG42/SAG51<1.37;
wherein TTL is the distance between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis; imgH is the maximum image height of the optical imaging lens; CT4 is the center thickness of the fourth lens on the optical axis; f5 is the effective focal length of the fifth lens; SAG42 is the distance on the optical axis from the intersection of the image side of the fourth lens and the optical axis to the vertex of the effective radius of the image side of the fourth lens; SAG51 is the distance on the optical axis from the point of intersection of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side surface of the fifth lens.
Optionally, the optical imaging lens satisfies the following conditional expression:
0.35<DT11/DT52<0.50;
wherein DT11 is the maximum effective radius of the object-side surface of the first lens element, and DT52 is the maximum effective radius of the image-side surface of the fifth lens element.
Optionally, the optical imaging lens satisfies the following conditional expression: 1.45< ET5/ET4<2.4;
wherein ET5 is the edge thickness of the fifth lens; ET4 is the edge thickness of the fourth lens.
Optionally, the optical imaging lens satisfies the following conditional expression:
-0.3<f123/f45<0.15;
wherein f123 is a combined focal length of the first lens, the second lens, and the third lens; f45 is a combined focal length of the fourth lens and the fifth lens.
Optionally, the optical imaging lens satisfies the following conditional expression:
0.9<CT4/T34<1.82;
wherein CT4 is the center thickness of the fourth lens on the optical axis; t34 is a separation distance of the third lens and the fourth lens on the optical axis.
Optionally, the optical imaging lens satisfies the following conditional expression: 1.7< CT4/CT5<2.61;
wherein CT4 is the center thickness of the fourth lens on the optical axis; CT5 is the center thickness of the fifth lens on the optical axis.
Optionally, the optical imaging lens satisfies the following conditional expression: 1.7< f/EPD <1.9;
wherein f is the total effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens.
Optionally, the optical imaging lens satisfies the following conditional expression:
0.55<EPD/ImgH<0.75;
wherein EPD is the entrance pupil diameter of the optical imaging lens, and ImgH is the maximum image height of the optical imaging lens.
Alternatively, 1.1< TTL/f <1.3;
wherein TTL is the distance between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis; f is the total effective focal length of the optical imaging lens.
In a second aspect, a camera module is provided, comprising an optical imaging lens in any one of the possible implementations of the first aspect.
The application has the beneficial effects that:
according to the relation and the range given in the above summary, when the TTL/ImgH is smaller than 1.55, the miniaturization of the optical imaging lens is facilitated at a certain maximum image height by the combination of the configuration mode of the lens and the lens with a specific optical design; when the ratio of-0.6 < CT4/f5< -0.2 and 0.75< SAG42/SAG51<1.37 is satisfied, the aberration and distortion of imaging can be improved, and higher imaging quality can be obtained. Therefore, when the TTL/ImgH is smaller than 1.55, the CT4/f5 is smaller than-0.2, and the SAG42/SAG51 is smaller than 1.37, the optical imaging lens is favorable for meeting the requirement of small TTL, and meanwhile, higher imaging performance can be obtained.
Drawings
Fig. 1 is a schematic structural view of an optical imaging lens according to a first embodiment of the present application;
FIG. 2 is a graph showing spherical aberration of an optical imaging lens according to a first embodiment of the present application;
FIG. 3 is an astigmatic curve diagram of an optical imaging lens according to a first embodiment of the present application;
fig. 4 is a distortion diagram of an optical imaging lens according to a first embodiment of the present application;
fig. 5 is a chromatic aberration of magnification graph of an optical imaging lens according to a first embodiment of the present application;
Fig. 6 is a schematic structural diagram of an optical imaging lens according to a second embodiment of the present application;
FIG. 7 is a graph of spherical aberration curves of an optical imaging lens according to a second embodiment of the present application;
FIG. 8 is an astigmatic curve diagram of an optical imaging lens according to a second embodiment of the present application;
fig. 9 is a distortion graph of an optical imaging lens according to a second embodiment of the present application;
fig. 10 is a chromatic aberration of magnification graph of an optical imaging lens according to a second embodiment of the present application;
fig. 11 is a schematic structural view of an optical imaging lens of a third embodiment of the present application;
FIG. 12 is a graph of spherical aberration curves of an optical imaging lens according to a third embodiment of the present application;
FIG. 13 is an astigmatic curve diagram of an optical imaging lens according to a third embodiment of the present application;
FIG. 14 is a graph of distortion of an optical imaging lens according to a third embodiment of the present application;
FIG. 15 is a chart of chromatic aberration of magnification of an optical imaging lens according to a third embodiment of the present application;
fig. 16 is a schematic structural view of an optical imaging lens of a fourth embodiment of the present application;
FIG. 17 is a graph of spherical aberration curves of an optical imaging lens according to a fourth embodiment of the present application;
FIG. 18 is an astigmatic curve diagram of an optical imaging lens according to a fourth embodiment of the present application;
FIG. 19 is a graph of distortion of an optical imaging lens according to a fourth embodiment of the present application;
FIG. 20 is a chart of chromatic aberration of magnification of an optical imaging lens according to a fourth embodiment of the present application;
FIG. 21 is a schematic configuration diagram of an optical imaging lens according to a fifth embodiment of the present application;
FIG. 22 is a spherical aberration diagram of an optical imaging lens according to a fifth embodiment of the present application;
FIG. 23 is an astigmatic curve diagram of an optical imaging lens according to a fifth embodiment of the present application;
FIG. 24 is a graph of distortion of an optical imaging lens according to a fifth embodiment of the present application;
FIG. 25 is a chart of chromatic aberration of magnification of an optical imaging lens according to a fifth embodiment of the present application;
fig. 26 is a schematic structural diagram of an optical imaging lens of a sixth embodiment of the present application;
FIG. 27 is a spherical aberration diagram of an optical imaging lens according to a sixth embodiment of the present application;
FIG. 28 is an astigmatic curve diagram of an optical imaging lens according to a sixth embodiment of the present application;
fig. 29 is a distortion graph of an optical imaging lens according to a sixth embodiment of the present application;
FIG. 30 is a chart showing the chromatic aberration of magnification of an optical imaging lens according to a sixth embodiment of the present application;
FIG. 31 is a schematic configuration diagram of an optical imaging lens according to a seventh embodiment of the present application;
FIG. 32 is a graph of spherical aberration curves of an optical imaging lens according to a seventh embodiment of the present application;
FIG. 33 is an astigmatic curve diagram of an optical imaging lens according to a seventh embodiment of the present application;
FIG. 34 is a graph of distortion of an optical imaging lens according to embodiment seven of the present application;
FIG. 35 is a graph of chromatic aberration of magnification of an optical imaging lens according to a seventh embodiment of the present application;
FIG. 36 is a schematic configuration diagram of an optical imaging lens according to an eighth embodiment of the present application;
FIG. 37 is a graph of spherical aberration curves of an optical imaging lens according to an eighth embodiment of the present application;
FIG. 38 is an astigmatic curve diagram of an optical imaging lens according to an eighth embodiment of the present application;
FIG. 39 is a graph of distortion of an optical imaging lens according to an eighth embodiment of the present application;
FIG. 40 is a chart of chromatic aberration of magnification of an optical imaging lens according to an eighth embodiment of the present application;
fig. 41 is a schematic structural view of an optical imaging lens of a ninth embodiment of the present application;
FIG. 42 is a graph of spherical aberration curves of an optical imaging lens according to embodiment nine of the present application;
FIG. 43 is an astigmatic curve diagram of an optical imaging lens according to a ninth embodiment of the present application;
fig. 44 is a distortion graph of an optical imaging lens according to a ninth embodiment of the present application;
fig. 45 is a chromatic aberration of magnification graph of an optical imaging lens of embodiment nine of the present application;
FIG. 46 is a schematic block diagram of an optical imaging lens according to an embodiment ten of the present application;
FIG. 47 is a spherical aberration diagram of an optical imaging lens according to an embodiment ten of the present application;
FIG. 48 is an astigmatic curve diagram of an optical imaging lens according to an embodiment ten of the present application;
FIG. 49 is a graph of distortion of an optical imaging lens according to embodiment ten of the present application;
FIG. 50 is a graph of chromatic aberration of magnification of an optical imaging lens according to embodiment ten of the present application;
FIG. 51 is a schematic configuration diagram of an optical imaging lens according to an eleventh embodiment of the present application;
FIG. 52 is a graph of spherical aberration curves of an optical imaging lens according to an eleventh embodiment of the present application;
FIG. 53 is an astigmatic curve diagram of an optical imaging lens according to an eleventh embodiment of the present application;
FIG. 54 is a graph of distortion of an optical imaging lens according to an eleventh embodiment of the present application;
fig. 55 is a chromatic aberration of magnification graph of an optical imaging lens of the eleventh embodiment of the application.
In the figure:
100. an optical imaging lens; 101. a first lens; 102. a second lens; 103. a third lens; 104. a fourth lens; 105. a fifth lens; 106. a light filter; 107. an image sensor.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.
For ease of understanding, the technical terms involved in the present application are explained and described first.
TTL is the distance between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis;
ImgH is the maximum image height of the optical imaging lens;
EPD is the entrance pupil diameter of the optical imaging lens;
f is the total effective focal length of the optical imaging lens;
f123 is a combined focal length of the first lens, the second lens, and the third lens;
f45 is a combined focal length of the fourth lens and the fifth lens;
f5 is the effective focal length of the fifth lens;
CT4 is the center thickness of the fourth lens on the optical axis;
CT5 is the center thickness of the fifth lens on the optical axis;
ET4 is the edge thickness of the fourth lens;
ET5 is the edge thickness of the fifth lens;
SAG42 is the distance on the optical axis from the intersection of the image side of the fourth lens and the optical axis to the vertex of the effective radius of the image side of the fourth lens;
SAG51 is the distance on the optical axis from the intersection point of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side surface of the fifth lens;
DT11 is the maximum effective radius of the object side of the first lens;
DT52 is the maximum effective radius of the image-side surface of the fifth lens;
t34 is a separation distance of the third lens and the fourth lens on the optical axis.
As shown in fig. 1, an optical imaging lens 100 according to an embodiment of the present application includes 5 lenses. For convenience of description, the left side of the optical imaging lens 100 is defined as a subject side (hereinafter, may also be referred to as an object side), a surface of the lens facing the object side may be referred to as an object side, the object side may also be referred to as a surface of the lens near the object side, the right side of the optical imaging lens 100 is an image side (hereinafter, may also be referred to as an image side), and the surface of the lens facing the image side may be referred to as an image side, and the image side may also be referred to as a surface of the lens near the image side. From the object side to the image side, the optical imaging lens 100 of the embodiment of the present application sequentially includes: a first lens 101, a second lens 102, a third lens 103, a fourth lens 104, and a fifth lens 105; a stop may also be provided before the first lens 101. An image sensor 107, such as a CCD, CMOS, or the like, may also be provided behind the fifth lens 105. A filter 106, such as a flat infrared cut filter, may also be provided between the fifth lens 105 and the image sensor 107. The optical imaging lens 100 is described in detail below.
It should be noted that, for convenience of understanding and description, the embodiment of the present application defines a representation form of relevant parameters of the optical imaging lens, for example, a TTL is used to represent a distance from an object side surface of the first lens to an imaging surface of the optical imaging lens on an optical axis; imgH represents the maximum image height of the optical imaging lens, and letter representations similar to the definition are merely schematic, and of course, may be represented in other forms, and the present application is not limited in any way.
In the following relation, the unit of the parameter related to the ratio is kept uniform, for example, the unit of the numerator is millimeter (mm), and the unit of the denominator is millimeter.
The positive and negative of the radius of curvature means that the optical surface is convex toward the object side or convex toward the image side, and when the optical surface (including the object side or the image side) is convex toward the object side, the radius of curvature of the optical surface is positive; when the optical surface (including the object side surface or the image side surface) is convex toward the image side, the optical surface is concave toward the object side surface, and the radius of curvature of the optical surface is negative.
It should be noted that, the shapes of the lenses and the concave-convex degree of the object side and the image side in the drawings are only schematic, and the embodiments of the present application are not limited in any way. In the present application, the material of the lens may be resin (resin), plastic (plastic), glass (glass). The lens includes a spherical lens and an aspherical lens. The lens can be a fixed focal length lens or a zoom lens, and can also be a standard lens, a short focal length lens or a long focal length lens.
Referring to fig. 1, a broken line is used to represent the optical axis of the lens in fig. 1.
The optical imaging lens 100 according to the embodiment of the present application includes, in order from an object side to an image side:
a first lens 101, a second lens 102, a third lens 103, a fourth lens 104, and a fifth lens 105.
It should be understood that the above-mentioned "each lens of the optical imaging lens" refers to a lens that constitutes the optical imaging lens, and in the embodiment of the present application, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are the first lens, the second lens, the third lens, and the fourth lens.
Alternatively, in an embodiment of the present application,
the first lens 101 may have positive optical power, the object-side surface of the first lens 101 being convex near the optical axis; the image side surface of the first lens 101 is concave near the optical axis;
the second lens 102 may have negative optical power, the object-side surface of the second lens 102 being concave near the optical axis, the image-side surface of the second lens 102 being concave near the optical axis;
the third lens 103 may have positive optical power, an object-side surface of the third lens 103 being convex near the optical axis, and an image-side surface of the third lens 103 being convex near the optical axis;
the fourth lens element 104 may have positive optical power, wherein an object-side surface of the fourth lens element 104 is concave near the optical axis and an image-side surface of the fourth lens element 104 is convex near the optical axis;
The fifth lens 105 may have negative optical power, the object-side surface of the fifth lens 105 being concave near the optical axis, and the image-side surface of the fifth lens 105 being concave near the optical axis.
The optical imaging lens 100 satisfies the following relationship:
TTL/ImgH<1.55,-0.6<CT4/f5<-0.2,0.75<SAG42/SAG51<1.37。
the above relation specifies a TTL/ImgH <1.55, preferably a TTL/ImgH <1.43. In the case where the image sensor 107 is of a certain size, the optical overall length can be shortened, the overall thickness of the optical imaging lens 100 can be reduced, and the occupied space of the optical imaging lens 100 can be reduced.
The above relation specifies-0.6 < CT4/f5< -0.2, preferably-0.49 < CT4/f5< -0.31, so that the distortion of the optical imaging lens 100 can be effectively controlled, and the imaging of the optical imaging lens 100 is clearer.
The above relation specifies 0.75< SAG42/SAG51<1.37, preferably 0.91< SAG42/SAG51<1.25, which is beneficial to ensuring the processability of the fourth lens and the fifth lens, facilitating the molding and assembly thereof, and further obtaining good imaging quality. If the ratio of SAG42 to SAG51 is not reasonable, the surface shapes of the fourth lens and the fifth lens are difficult to debug, and in addition, obvious deformation can occur after assembly, so that the imaging quality of the optical imaging lens applying the lens is difficult to ensure.
In certain implementations of the first aspect, the optical imaging lens satisfies: 0.35< DT11/DT52<0.50, preferably 0.35< DT11/DT52<0.42; by limiting DT11/DT52 within a reasonable range, the vignetting value of the optical imaging lens can be effectively controlled, partial light rays with poor optical imaging quality can be intercepted, the imaging quality of the optical imaging lens is increased, the caliber of the first lens 101 is larger, the optical imaging lens can be ensured to absorb sufficient luminous flux, and the resolution and the relative illuminance of the whole optical imaging lens can be improved; meanwhile, the problem of large step difference caused by overlarge caliber difference between the first lens 101 and the fifth lens 105 can be avoided, so that the whole structure of the optical imaging lens is more symmetrically balanced, and the assembling stability is ensured.
In certain implementations of the first aspect, the optical imaging lens satisfies: 1.45< ET5/ET4<2.4, preferably 1.70< ET5/ET4<2.3; the edge thicknesses of the fourth lens 104 and the fifth lens 105 are reasonably controlled, so that the lenses are easy to injection mold, the processability of an imaging system is improved, and better imaging quality is ensured.
In certain implementations of the first aspect, the optical imaging lens satisfies: -0.3< f123/f45<0.15, preferably
-0.19< f123/f45<0; the tolerance sensitivity of each lens is balanced, and the total length of the optical imaging lens is reduced.
In certain implementations of the first aspect, the optical imaging lens satisfies: 0.9< CT4/T34<1.82, preferably 1.0< CT4/T34<1.80; the on-axis space of the optical imaging lens can be reasonably distributed, and the structure of the optical imaging lens is more compact.
In certain implementations of the first aspect, the optical imaging lens satisfies: 1.7< CT4/CT5<2.61, preferably 1.8< CT4/CT5<2.60; the center thicknesses of the fourth lens and the fifth lens are reasonably configured, so that the thickness sensitivity of the lens can be effectively reduced, and the lens system is further beneficial to meeting the requirement of processing manufacturability.
In certain implementations of the first aspect, the optical imaging lens satisfies: 1.7< f/EPD <1.9, preferably 1.80< f/EPD <1.86; the system can have the advantage of large aperture in the process of increasing the light quantity, so that the imaging effect in dark environment is enhanced while the aberration of the edge view field is reduced.
In certain implementations of the first aspect, the optical imaging lens satisfies: 0.55< EPD/ImgH <0.75, preferably 0.63< EPD/ImgH <0.72; the ratio of the entrance pupil diameter to the image height of the optical imaging system is controlled, so that the relative aperture of the optical imaging lens is improved, the light flux of the optical imaging lens is increased, and the illumination of the optical imaging lens is improved.
In certain implementations of the first aspect, the optical imaging lens satisfies: 1.1< TTL/f <1.3, preferably 1.21< TTL/f <1.29; the miniaturization characteristic of the lens can be embodied. In addition, by controlling the total effective focal length of the lens within a reasonable range, the angle of view of the lens can be further controlled.
In a second aspect, a camera module is provided, including the optical imaging lens in any one of possible implementation manners of the first aspect, and may further include an image sensor, an analog-to-digital converter, an image processor, a memory, and the like, to implement an image capturing function of the optical imaging lens.
Some specific, but non-limiting examples of embodiments of the present application are described in more detail below in conjunction with fig. 2-34.
Note that, in the embodiment of the present application, the material of each lens of the optical imaging lens 100 is not particularly limited.
Example 1
The optical imaging lens 100 according to an embodiment of the present application sequentially comprises, from an object side to an image side: the first lens 101, the second lens 102, the third lens 103, the fourth lens 104, and the fifth lens 105 are shown in fig. 1.
For convenience of description, in the following embodiment, STO represents the surface of the diaphragm, S1 represents the object side surface of the first lens element 101, S2 represents the image side surface of the first lens element 101, S3 represents the object side surface of the second lens element 102, S4 represents the image side surface of the second lens element 102, S5 represents the object side surface of the third lens element 103, S6 represents the image side surface of the third lens element 103, S7 represents the object side surface of the fourth lens element 104, S8 represents the image side surface of the fourth lens element 104, S9 represents the object side surface of the fifth lens element 105, S10 represents the image side surface of the fifth lens element 105, S11 represents the object side surface of the infrared filter element, S12 represents the image side surface of the infrared filter element, and S13 represents the image plane. The total optical length of the optical imaging lens 100 is represented by TTL, the maximum image height of the optical imaging lens 100 is represented by ImgH, and the effective focal length of the optical imaging lens 100 is represented by EFL. The i-th order aspheric coefficients are denoted by αi, i=4, 6, 8, 10, 12, 14, 16, 18, 20, and the cone coefficients are denoted by K.
In accordance with the above relation, table 1 shows the effective focal length EFL, the full field angle FOV, the total optical length TTL, the aperture Fno, the surface type, the radius of curvature, the thickness, the refractive index of the material, and the conic coefficient of the optical imaging lens 100 according to the first embodiment, wherein the units of the radius of curvature and the thickness are millimeter (mm), as shown in table 1:
TABLE 1
Table 2 shows the aspherical coefficients of the optical imaging lens 100 according to the first embodiment of the present application, as shown in table 2:
TABLE 2
The non-curved surfaces of the respective lenses of the imaging optical lens 100 satisfy:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/r (i.e., paraxial curvature c is the inverse of radius r of curvature in table 1 above); k is the conic constant (given in table 1 above); ai is the correction coefficient of the i-n th order of the aspherical surface, and the higher order coefficients A4, A6, A8, a10, a12, a14, a16, a18, and a20 of the respective lens surfaces S1 to S10 are shown in table 2.
It should be understood that the aspherical surfaces of the respective lenses in the optical imaging lens 100 may use the aspherical surfaces shown in the above-mentioned aspherical surface formulas, or may use other aspherical surface formulas, and the present application is not limited thereto.
The design data of the optical imaging lens 100 according to the first embodiment of the present application are given above, the effective focal length EFL is 4.109mm, the full field angle FOV is 77 degrees, the total optical length TTL is 4.896mm, and the aperture F-number Fno is 1.841.
In one embodiment provided by the application, the ratio of the total optical length TTL to the maximum image height ImgH of the optical imaging lens satisfies: TTL/imgh=1.498.
In one embodiment provided by the present application, the ratio of the center thickness of the fourth lens on the optical axis to the effective focal length of the fifth lens satisfies: CT 4/f5= -0.495.
In one embodiment of the present application, a ratio of a distance between an intersection point of the image side surface of the fourth lens element and the optical axis and an effective radius vertex of the image side surface of the fourth lens element and a distance between an intersection point of the object side surface of the fifth lens element and the optical axis and an effective radius vertex of the object side surface of the fifth lens element on the optical axis satisfies: SAG 42/sag51=1.25.
In one embodiment provided by the application, DT11/DT52 = 0.404.
In one embodiment provided by the present application, ET 5/et4= 2.239.
In one embodiment provided by the application, f123/f45= -0.166.
In one embodiment provided by the application, CT 4/t34= 1.632.
In one embodiment provided by the present application, CT4/CT5 = 2.006.
In one embodiment provided by the present application, f/epd= 1.841.
In one embodiment provided by the present application, EPD/imgh=0.683.
In one embodiment provided by the present application, TTL/f= 1.191.
Fig. 2 to 5 illustrate the optical performance of the optical imaging lens 100 designed in such a lens combination manner as one embodiment.
In the first embodiment, the optical imaging lens meets the requirement of small TTL, and can obtain higher imaging performance.
Example two
The optical imaging lens 100 according to an embodiment of the present application sequentially comprises, from an object side to an image side: the first lens 101, the second lens 102, the third lens 103, the fourth lens 104, and the fifth lens 105 are illustrated in fig. 6.
For convenience of description, in the following embodiment, STO represents the surface of the diaphragm, S1 represents the object side surface of the first lens element 101, S2 represents the image side surface of the first lens element 101, S3 represents the object side surface of the second lens element 102, S4 represents the image side surface of the second lens element 102, S5 represents the object side surface of the third lens element 103, S6 represents the image side surface of the third lens element 103, S7 represents the object side surface of the fourth lens element 104, S8 represents the image side surface of the fourth lens element 104, S9 represents the object side surface of the fifth lens element 105, S10 represents the image side surface of the fifth lens element 105, S11 represents the object side surface of the infrared filter element, S12 represents the image side surface of the infrared filter element, and S13 represents the image plane. The total optical length of the optical imaging lens 100 is represented by TTL, the maximum image height of the optical imaging lens 100 is represented by ImgH, and the effective focal length of the optical imaging lens 100 is represented by EFL. The i-th order aspheric coefficients are denoted by αi, i=4, 6, 8, 10, 12, 14, 16, 18, 20, and the cone coefficients are denoted by K.
In accordance with the above relation, table 3 shows the effective focal length EFL, the full field angle FOV, the total optical length TTL, the aperture Fno, the surface type, the radius of curvature, the thickness, the refractive index of the material, and the conic coefficient of the optical imaging lens 100 in the second embodiment, wherein the units of the radius of curvature and the thickness are millimeter (mm), as shown in table 3:
TABLE 3 Table 3
Table 4 shows the aspherical coefficients of the optical imaging lens 100 of the second embodiment of the present application, as shown in table 4:
TABLE 4 Table 4
The non-curved surfaces of the respective lenses of the imaging optical lens 100 satisfy:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/r (i.e., paraxial curvature c is the inverse of radius r in table 3 above); k is the conic constant (given in table 3 above); ai is the correction coefficient of the i-n th order of the aspherical surface, and the higher order coefficients A4, A6, A8, a10, a12, a14, a16, a18, and a20 of the respective lens surfaces S1 to S10 are shown in table 4.
It should be understood that the aspherical surfaces of the respective lenses in the optical imaging lens 100 may use the aspherical surfaces shown in the above-mentioned aspherical surface formulas, or may use other aspherical surface formulas, and the present application is not limited thereto.
The design data of the optical imaging lens 100 according to the second embodiment of the present application is given above, the effective focal length EFL is 3.956mm, the full field angle FOV is 79 degrees, the total optical length TTL is 4.823mm, and the aperture F-number Fno is 1.859.
In one embodiment provided by the application, the ratio of the total optical length TTL to the maximum image height ImgH of the optical imaging lens satisfies: TTL/imgh=1.437.
In one embodiment provided by the present application, the ratio of the center thickness of the fourth lens on the optical axis to the effective focal length of the fifth lens satisfies: CT 4/f5= -0.597.
In one embodiment of the present application, a ratio of a distance between an intersection point of the image side surface of the fourth lens element and the optical axis and an effective radius vertex of the image side surface of the fourth lens element and a distance between an intersection point of the object side surface of the fifth lens element and the optical axis and an effective radius vertex of the object side surface of the fifth lens element on the optical axis satisfies: SAG 42/sag51=1.265.
In one embodiment provided by the application, DT11/DT52 = 0.388.
In one embodiment provided by the present application, ET 5/et4=2.308.
In one embodiment provided by the application, f123/f45= -0.144.
In one embodiment provided by the present application, CT 4/t34=1.804.
In one embodiment provided by the application, CT4/CT5 = 2.598.
In one embodiment provided by the present application, f/epd=1.859.
In one embodiment provided by the present application, EPD/imgh=0.641.
In one embodiment provided by the present application, TTL/f=1.219.
Fig. 7 to 10 describe the optical performance of the optical imaging lens 100 designed in the lens combination manner of the second embodiment.
In the second embodiment, the optical imaging lens meets the requirement of small TTL, and can obtain higher imaging performance.
Example III
The optical imaging lens 100 according to an embodiment of the present application sequentially comprises, from an object side to an image side: the first lens 101, the second lens 102, the third lens 103, the fourth lens 104, and the fifth lens 105 are illustrated in fig. 11.
For convenience of description, in the following embodiment, STO represents the surface of the diaphragm, S1 represents the object side surface of the first lens element 101, S2 represents the image side surface of the first lens element 101, S3 represents the object side surface of the second lens element 102, S4 represents the image side surface of the second lens element 102, S5 represents the object side surface of the third lens element 103, S6 represents the image side surface of the third lens element 103, S7 represents the object side surface of the fourth lens element 104, S8 represents the image side surface of the fourth lens element 104, S9 represents the object side surface of the fifth lens element 105, S10 represents the image side surface of the fifth lens element 105, S11 represents the object side surface of the infrared filter element, S12 represents the image side surface of the infrared filter element, and S13 represents the image plane. The total optical length of the optical imaging lens 100 is represented by TTL, the maximum image height of the optical imaging lens 100 is represented by ImgH, and the effective focal length of the optical imaging lens 100 is represented by EFL. The i-th order aspheric coefficients are denoted by αi, i=4, 6, 8, 10, 12, 14, 16, 18, 20, and the cone coefficients are denoted by K.
In accordance with the above relation, table 5 shows the effective focal length EFL, the full field angle FOV, the total optical length TTL, the aperture Fno, the surface type, the radius of curvature, the thickness, the refractive index of the material, and the conic coefficient of the optical imaging lens 100 in the third embodiment, wherein the units of the radius of curvature and the thickness are millimeter (mm), as shown in table 5:
TABLE 5
/>
Table 6 shows the aspherical coefficients of the optical imaging lens 100 of the third embodiment of the present application, as shown in table 6:
TABLE 6
The non-curved surfaces of the respective lenses of the imaging optical lens 100 satisfy:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/r (i.e., paraxial curvature c is the inverse of radius r in table 5 above); k is the conic constant (given in table 5 above); ai is the correction coefficient of the i-n th order of the aspherical surface, and the higher order coefficients A4, A6, A8, a10, a12, a14, a16, a18, and a20 of the respective lens surfaces S1 to S10 are shown in table 6.
It should be understood that the aspherical surfaces of the respective lenses in the optical imaging lens 100 may use the aspherical surfaces shown in the above-mentioned aspherical surface formulas, or may use other aspherical surface formulas, and the present application is not limited thereto.
The design data of the optical imaging lens 100 according to the third embodiment of the present application is given above, the effective focal length EFL is 4.112mm, the full field angle FOV is 76.967 degrees, the total optical length TTL is 4.723mm, and the aperture F-number Fno is 1.831.
In one embodiment provided by the application, the ratio of the total optical length TTL to the maximum image height ImgH of the optical imaging lens satisfies: TTL/imgh=1.430.
In one embodiment provided by the present application, the ratio of the center thickness of the fourth lens on the optical axis to the effective focal length of the fifth lens satisfies: CT 4/f5= -0.202.
In one embodiment of the present application, a ratio of a distance between an intersection point of the image side surface of the fourth lens element and the optical axis and an effective radius vertex of the image side surface of the fourth lens element and a distance between an intersection point of the object side surface of the fifth lens element and the optical axis and an effective radius vertex of the object side surface of the fifth lens element on the optical axis satisfies: SAG 42/sag51=0.85.
In one embodiment provided by the application, DT11/DT52 = 0.422.
In one embodiment provided by the present application, ET 5/et4=2.303.
In one embodiment provided by the application, f123/f45= -0.195.
In one embodiment provided by the present application, CT 4/t34=0.952.
In one embodiment provided by the present application, CT4/CT5 = 1.801.
In one embodiment provided by the present application, f/epd= 1.831.
In one embodiment provided by the present application, EPD/imgh=0.676.
In one embodiment provided by the present application, TTL/f=1.149.
Fig. 12 to 15 describe the optical performance of the optical imaging lens 100 designed in the three-lens combination manner of the embodiment.
In the third embodiment, the optical imaging lens satisfies the requirement of small TTL, and can obtain higher imaging performance.
Example IV
The optical imaging lens 100 according to an embodiment of the present application sequentially comprises, from an object side to an image side: the first lens 101, the second lens 102, the third lens 103, the fourth lens 104, and the fifth lens 105 are illustrated in fig. 16.
For convenience of description, in the following embodiment, STO represents the surface of the diaphragm, S1 represents the object side surface of the first lens element 101, S2 represents the image side surface of the first lens element 101, S3 represents the object side surface of the second lens element 102, S4 represents the image side surface of the second lens element 102, S5 represents the object side surface of the third lens element 103, S6 represents the image side surface of the third lens element 103, S7 represents the object side surface of the fourth lens element 104, S8 represents the image side surface of the fourth lens element 104, S9 represents the object side surface of the fifth lens element 105, S10 represents the image side surface of the fifth lens element 105, S11 represents the object side surface of the infrared filter element, S12 represents the image side surface of the infrared filter element, and S13 represents the image plane. The total optical length of the optical imaging lens 100 is represented by TTL, the maximum image height of the optical imaging lens 100 is represented by ImgH, and the effective focal length of the optical imaging lens 100 is represented by EFL. The i-th order aspheric coefficients are denoted by αi, i=4, 6, 8, 10, 12, 14, 16, 18, 20, and the cone coefficients are denoted by K.
In accordance with the above relation, table 7 shows the effective focal length EFL, the full field angle FOV, the total optical length TTL, the aperture Fno, the surface type, the radius of curvature, the thickness, the refractive index of the material, and the conic coefficient of the optical imaging lens 100 in the fourth embodiment, wherein the units of the radius of curvature and the thickness are millimeter (mm), as shown in table 7:
TABLE 7
Table 8 shows the aspherical coefficients of the optical imaging lens 100 of the fourth embodiment of the present application, as shown in table 8:
TABLE 8
The non-curved surfaces of the respective lenses of the imaging optical lens 100 satisfy:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/r (i.e., paraxial curvature c is the inverse of radius r of curvature in table 7 above); k is the conic constant (given in table 7 above); ai is the correction coefficient of the i-n th order of the aspherical surface, and the higher order coefficients A4, A6, A8, a10, a12, a14, a16, a18, and a20 of the respective lens surfaces S1 to S10 are shown in table 8.
It should be understood that the aspherical surfaces of the respective lenses in the optical imaging lens 100 may use the aspherical surfaces shown in the above-mentioned aspherical surface formulas, or may use other aspherical surface formulas, and the present application is not limited thereto.
The design data of the optical imaging lens 100 according to the fourth embodiment of the present application is given above, the effective focal length EFL is 4.105mm, the full field angle FOV is 77.068 degrees, the total optical length TTL is 4.881mm, and the aperture F-number Fno is 1.844.
In one embodiment provided by the application, the ratio of the total optical length TTL to the maximum image height ImgH of the optical imaging lens satisfies: TTL/imgh=1.467.
In one embodiment provided by the present application, the ratio of the center thickness of the fourth lens on the optical axis to the effective focal length of the fifth lens satisfies: CT 4/f5= -0.475.
In one embodiment of the present application, a ratio of a distance between an intersection point of the image side surface of the fourth lens element and the optical axis and an effective radius vertex of the image side surface of the fourth lens element and a distance between an intersection point of the object side surface of the fifth lens element and the optical axis and an effective radius vertex of the object side surface of the fifth lens element on the optical axis satisfies: SAG 42/sag51=0.756.
In one embodiment provided by the application, DT11/DT52 = 0.421.
In one embodiment provided by the present application, ET 5/et4= 1.702.
In one embodiment provided by the application, f123/f45= -0.247.
In one embodiment provided by the present application, CT 4/t34=1.612.
In one embodiment provided by the application, CT4/CT5 = 1.729.
In one embodiment provided by the present application, f/epd=1.844.
In one embodiment provided by the present application, EPD/imgh=0.671.
In one embodiment provided by the present application, TTL/f=1.189.
Fig. 17 to 20 describe the optical performance of the optical imaging lens 100 designed in the lens combination manner of the fourth embodiment.
In the fourth embodiment, the optical imaging lens satisfies the requirement of small TTL, and at the same time, higher imaging performance can be obtained.
Example five
The optical imaging lens 100 according to an embodiment of the present application sequentially comprises, from an object side to an image side: the first lens 101, the second lens 102, the third lens 103, the fourth lens 104, and the fifth lens 105 are illustrated in fig. 21.
For convenience of description, in the following embodiment, STO represents the surface of the diaphragm, S1 represents the object side surface of the first lens element 101, S2 represents the image side surface of the first lens element 101, S3 represents the object side surface of the second lens element 102, S4 represents the image side surface of the second lens element 102, S5 represents the object side surface of the third lens element 103, S6 represents the image side surface of the third lens element 103, S7 represents the object side surface of the fourth lens element 104, S8 represents the image side surface of the fourth lens element 104, S9 represents the object side surface of the fifth lens element 105, S10 represents the image side surface of the fifth lens element 105, S11 represents the object side surface of the infrared filter element, S12 represents the image side surface of the infrared filter element, and S13 represents the image plane. The total optical length of the optical imaging lens 100 is represented by TTL, the maximum image height of the optical imaging lens 100 is represented by ImgH, and the effective focal length of the optical imaging lens 100 is represented by EFL. The i-th order aspheric coefficients are denoted by αi, i=4, 6, 8, 10, 12, 14, 16, 18, 20, and the cone coefficients are denoted by K.
In accordance with the above relation, table 9 shows the effective focal length EFL, the full field angle FOV, the total optical length TTL, the aperture Fno, the surface type, the radius of curvature, the thickness, the refractive index of the material, and the conic coefficient of the optical imaging lens 100 in the fifth embodiment, wherein the units of the radius of curvature and the thickness are millimeter (mm), as shown in table 9:
TABLE 9
Table 10 shows the aspherical coefficients of the optical imaging lens 100 of the fifth embodiment of the present application, as shown in table 10:
table 10
The non-curved surfaces of the respective lenses of the imaging optical lens 100 satisfy:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/r (i.e., paraxial curvature c is the inverse of radius r of curvature in table 9 above); k is the conic constant (given in table 9 above); ai is the correction coefficient of the i-n th order of the aspherical surface, and the higher order coefficients A4, A6, A8, a10, a12, a14, a16, a18, and a20 of the respective lens surfaces S1 to S10 are shown in table 10.
It should be understood that the aspherical surfaces of the respective lenses in the optical imaging lens 100 may use the aspherical surfaces shown in the above-mentioned aspherical surface formulas, or may use other aspherical surface formulas, and the present application is not limited thereto.
The design data of the optical imaging lens 100 according to the fifth embodiment of the present application is given above, the effective focal length EFL is 4.010mm, the full field angle FOV is 78.375 degrees, the total optical length TTL is 5.196mm, and the aperture F-number Fno is 1.854.
In one embodiment provided by the application, the ratio of the total optical length TTL to the maximum image height ImgH of the optical imaging lens satisfies: TTL/imgh=1.543.
In one embodiment provided by the present application, the ratio of the center thickness of the fourth lens on the optical axis to the effective focal length of the fifth lens satisfies: CT 4/f5= -0.598.
In one embodiment of the present application, a ratio of a distance between an intersection point of the image side surface of the fourth lens element and the optical axis and an effective radius vertex of the image side surface of the fourth lens element and a distance between an intersection point of the object side surface of the fifth lens element and the optical axis and an effective radius vertex of the object side surface of the fifth lens element on the optical axis satisfies: SAG 42/sag51=1.298.
In one embodiment provided by the application, DT11/DT52 = 0.374.
In one embodiment provided by the present application, ET 5/et4= 1.799.
In one embodiment provided by the present application, f123/f45=0.144.
In one embodiment provided by the application, CT 4/t34= 1.803.
In one embodiment provided by the present application, CT4/CT5 = 1.802.
In one embodiment provided by the present application, f/epd= 1.854.
In one embodiment provided by the present application, EPD/imgh=0.647.
In one embodiment provided by the present application, TTL/f=1.296.
Fig. 22 to 25 describe the optical performance of the optical imaging lens 100 designed in the fifth lens combination manner of the embodiment.
In the fifth embodiment, the optical imaging lens satisfies the requirement of small TTL, and at the same time, higher imaging performance can be obtained.
Example six
The optical imaging lens 100 according to an embodiment of the present application sequentially comprises, from an object side to an image side: the first lens 101, the second lens 102, the third lens 103, the fourth lens 104, and the fifth lens 105 are illustrated in fig. 26.
For convenience of description, in the following embodiment, STO represents the surface of the diaphragm, S1 represents the object side surface of the first lens element 101, S2 represents the image side surface of the first lens element 101, S3 represents the object side surface of the second lens element 102, S4 represents the image side surface of the second lens element 102, S5 represents the object side surface of the third lens element 103, S6 represents the image side surface of the third lens element 103, S7 represents the object side surface of the fourth lens element 104, S8 represents the image side surface of the fourth lens element 104, S9 represents the object side surface of the fifth lens element 105, S10 represents the image side surface of the fifth lens element 105, S11 represents the object side surface of the infrared filter element, S12 represents the image side surface of the infrared filter element, and S13 represents the image plane. The total optical length of the optical imaging lens 100 is represented by TTL, the maximum image height of the optical imaging lens 100 is represented by ImgH, and the effective focal length of the optical imaging lens 100 is represented by EFL. The i-th order aspheric coefficients are denoted by αi, i=4, 6, 8, 10, 12, 14, 16, 18, 20, and the cone coefficients are denoted by K.
In accordance with the above relation, table 11 shows the effective focal length EFL, the full field angle FOV, the total optical length TTL, the aperture Fno, the surface type, the radius of curvature, the thickness, the refractive index of the material, and the conic coefficient of the optical imaging lens 100 in the sixth embodiment, wherein the units of the radius of curvature and the thickness are millimeter (mm), as shown in table 11:
TABLE 11
Table 12 shows the aspherical coefficients of the optical imaging lens 100 of the sixth embodiment of the present application, as shown in table 12:
table 12
/>
The non-curved surfaces of the respective lenses of the imaging optical lens 100 satisfy:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/r (i.e., paraxial curvature c is the inverse of radius r of curvature in table 11 above); k is the conic constant (given in table 11 above); ai is the correction coefficient of the i-n th order of the aspherical surface, and the higher order coefficients A4, A6, A8, a10, a12, a14, a16, a18, and a20 of the respective lens surfaces S1 to S10 are shown in table 12.
It should be understood that the aspherical surfaces of the respective lenses in the optical imaging lens 100 may use the aspherical surfaces shown in the above-mentioned aspherical surface formulas, or may use other aspherical surface formulas, and the present application is not limited thereto.
The design data of the optical imaging lens 100 according to the sixth embodiment of the present application is given above, the effective focal length EFL is 4.413mm, the full field angle FOV is 73.051 degrees, the total optical length TTL is 4.954mm, and the aperture F-number Fno is 1.823.
In one embodiment provided by the application, the ratio of the total optical length TTL to the maximum image height ImgH of the optical imaging lens satisfies: TTL/imgh=1.498.
In one embodiment provided by the present application, the ratio of the center thickness of the fourth lens on the optical axis to the effective focal length of the fifth lens satisfies: CT 4/f5= -0.375.
In one embodiment of the present application, a ratio of a distance between an intersection point of the image side surface of the fourth lens element and the optical axis and an effective radius vertex of the image side surface of the fourth lens element and a distance between an intersection point of the object side surface of the fifth lens element and the optical axis and an effective radius vertex of the object side surface of the fifth lens element on the optical axis satisfies: SAG 42/sag51= 0.831.
In one embodiment provided by the application, DT11/DT52 = 0.498.
In one embodiment provided by the present application, ET 5/et4= 1.479.
In one embodiment provided by the application, f123/f45= -0.191.
In one embodiment provided by the application, CT 4/t34= 1.113.
In one embodiment provided by the application, CT4/CT5 = 2.593.
In one embodiment provided by the present application, f/epd= 1.823.
In one embodiment provided by the present application, EPD/imgh=0.725.
In one embodiment provided by the present application, TTL/f=1.123.
Fig. 27 to 30 describe the optical performance of the optical imaging lens 100 designed in the lens combination manner of the sixth embodiment.
In the sixth embodiment, the optical imaging lens satisfies the requirement of small TTL, and at the same time, higher imaging performance can be obtained.
Example seven
The optical imaging lens 100 according to an embodiment of the present application sequentially comprises, from an object side to an image side: the first lens 101, the second lens 102, the third lens 103, the fourth lens 104, and the fifth lens 105 are illustrated in fig. 31.
For convenience of description, in the following embodiment, STO represents the surface of the diaphragm, S1 represents the object side surface of the first lens element 101, S2 represents the image side surface of the first lens element 101, S3 represents the object side surface of the second lens element 102, S4 represents the image side surface of the second lens element 102, S5 represents the object side surface of the third lens element 103, S6 represents the image side surface of the third lens element 103, S7 represents the object side surface of the fourth lens element 104, S8 represents the image side surface of the fourth lens element 104, S9 represents the object side surface of the fifth lens element 105, S10 represents the image side surface of the fifth lens element 105, S11 represents the object side surface of the infrared filter element, S12 represents the image side surface of the infrared filter element, and S13 represents the image plane. The total optical length of the optical imaging lens 100 is represented by TTL, the maximum image height of the optical imaging lens 100 is represented by ImgH, and the effective focal length of the optical imaging lens 100 is represented by EFL. The i-th order aspheric coefficients are denoted by αi, i=4, 6, 8, 10, 12, 14, 16, 18, 20, and the cone coefficients are denoted by K.
In accordance with the above relation, table 13 shows the effective focal length EFL, the full field angle FOV, the total optical length TTL, the aperture Fno, the surface type, the radius of curvature, the thickness, the refractive index of the material, and the conic coefficient of the optical imaging lens 100 in the seventh embodiment, wherein the units of the radius of curvature and the thickness are millimeter (mm), as shown in table 13:
TABLE 13
Table 14 shows the aspherical coefficients of the optical imaging lens 100 of the seventh embodiment of the present application, as shown in table 14:
TABLE 14
The non-curved surfaces of the respective lenses of the imaging optical lens 100 satisfy:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/r (i.e., paraxial curvature c is the inverse of radius r of curvature in table 13 above); k is the conic constant (given in table 13 above); ai is the correction coefficient of the i-n th order of the aspherical surface, and the higher order coefficients A4, A6, A8, a10, a12, a14, a16, a18, and a20 of the respective lens surfaces S1 to S10 are shown in table 14.
It should be understood that the aspherical surfaces of the respective lenses in the optical imaging lens 100 may use the aspherical surfaces shown in the above-mentioned aspherical surface formulas, or may use other aspherical surface formulas, and the present application is not limited thereto.
The design data of the optical imaging lens 100 according to the seventh embodiment of the present application is given above, the effective focal length EFL is 3.904mm, the full field angle FOV is 79.881 degrees, the total optical length TTL is 4.737mm, and the aperture F-number Fno is 1.858.
In one embodiment provided by the application, the ratio of the total optical length TTL to the maximum image height ImgH of the optical imaging lens satisfies: TTL/imgh=1.407.
In one embodiment provided by the present application, the ratio of the center thickness of the fourth lens on the optical axis to the effective focal length of the fifth lens satisfies: CT 4/f5= -0.542.
In one embodiment of the present application, a ratio of a distance between an intersection point of the image side surface of the fourth lens element and the optical axis and an effective radius vertex of the image side surface of the fourth lens element and a distance between an intersection point of the object side surface of the fifth lens element and the optical axis and an effective radius vertex of the object side surface of the fifth lens element on the optical axis satisfies: SAG 42/sag51=1.348.
In one embodiment provided by the application, DT11/DT52 = 0.351.
In one embodiment provided by the present application, ET 5/et4=1.727.
In one embodiment provided by the application, f123/f45= -0.164.
In one embodiment provided by the application, CT 4/t34= 1.816.
In one embodiment provided by the application, CT4/CT5 = 2.590.
In one embodiment provided by the present application, f/epd= 1.858.
In one embodiment provided by the present application, EPD/imgh=0.630.
In one embodiment provided by the present application, TTL/f= 1.213.
Fig. 32 to 35 describe the optical performance of the optical imaging lens 100 designed in the lens combination manner of the seventh embodiment.
In the seventh embodiment, the optical imaging lens satisfies the requirement of small TTL, and at the same time, higher imaging performance can be obtained.
Example eight
The optical imaging lens 100 according to an embodiment of the present application sequentially comprises, from an object side to an image side: the first lens 101, the second lens 102, the third lens 103, the fourth lens 104, and the fifth lens 105 are illustrated in fig. 36.
For convenience of description, in the following embodiment, STO represents the surface of the diaphragm, S1 represents the object side surface of the first lens element 101, S2 represents the image side surface of the first lens element 101, S3 represents the object side surface of the second lens element 102, S4 represents the image side surface of the second lens element 102, S5 represents the object side surface of the third lens element 103, S6 represents the image side surface of the third lens element 103, S7 represents the object side surface of the fourth lens element 104, S8 represents the image side surface of the fourth lens element 104, S9 represents the object side surface of the fifth lens element 105, S10 represents the image side surface of the fifth lens element 105, S11 represents the object side surface of the infrared filter element, S12 represents the image side surface of the infrared filter element, and S13 represents the image plane. The total optical length of the optical imaging lens 100 is represented by TTL, the maximum image height of the optical imaging lens 100 is represented by ImgH, and the effective focal length of the optical imaging lens 100 is represented by EFL. The i-th order aspheric coefficients are denoted by αi, i=4, 6, 8, 10, 12, 14, 16, 18, 20, and the cone coefficients are denoted by K.
In accordance with the above relation, table 15 shows the effective focal length EFL, the full field angle FOV, the total optical length TTL, the aperture Fno, the surface type, the radius of curvature, the thickness, the refractive index of the material, and the conic coefficient of the optical imaging lens 100 in the eighth embodiment, wherein the units of the radius of curvature and the thickness are millimeter (mm), as shown in table 15:
TABLE 15
Table 16 shows the aspherical coefficients of the optical imaging lens 100 of the eighth embodiment of the present application, as shown in table 16:
table 16
The non-curved surfaces of the respective lenses of the imaging optical lens 100 satisfy:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/r (i.e., paraxial curvature c is the inverse of radius r in table 15 above); k is the conic constant (given in table 15 above); ai is the correction coefficient of the i-n th order of the aspherical surface, and the higher order coefficients A4, A6, A8, a10, a12, a14, a16, a18, and a20 of the respective lens surfaces S1 to S10 are shown in table 16.
It should be understood that the aspherical surfaces of the respective lenses in the optical imaging lens 100 may use the aspherical surfaces shown in the above-mentioned aspherical surface formulas, or may use other aspherical surface formulas, and the present application is not limited thereto.
The design data of the optical imaging lens 100 according to the eighth embodiment of the present application is given above, the effective focal length EFL is 4.120mm, the full field angle FOV is 76.856 degrees, the total optical length TTL is 4.999mm, and the aperture F-number Fno is 1.720.
In one embodiment provided by the application, the ratio of the total optical length TTL to the maximum image height ImgH of the optical imaging lens satisfies: TTL/imgh=1.492.
In one embodiment provided by the present application, the ratio of the center thickness of the fourth lens on the optical axis to the effective focal length of the fifth lens satisfies: CT 4/f5= -0.435.
In one embodiment of the present application, a ratio of a distance between an intersection point of the image side surface of the fourth lens element and the optical axis and an effective radius vertex of the image side surface of the fourth lens element and a distance between an intersection point of the object side surface of the fifth lens element and the optical axis and an effective radius vertex of the object side surface of the fifth lens element on the optical axis satisfies: SAG 42/sag51=1.362.
In one embodiment provided by the application, DT11/DT52 = 0.412.
In one embodiment provided by the present application, ET 5/et4=2.254.
In one embodiment provided by the application, f123/f45= -0.034.
In one embodiment provided by the present application, CT 4/t34=1.775.
In one embodiment provided by the application, CT4/CT5 = 2.600.
In one embodiment provided by the present application, f/epd=1.708.
In one embodiment provided by the present application, EPD/imgh=0.720.
In one embodiment provided by the present application, TTL/f= 1.213.
Fig. 37 to 40 describe the optical performance of the optical imaging lens 100 designed in the lens combination manner of the eighth embodiment.
In the eighth embodiment, the optical imaging lens satisfies the requirement of small TTL, and at the same time, higher imaging performance can be obtained.
Example nine
The optical imaging lens 100 according to an embodiment of the present application sequentially comprises, from an object side to an image side: the first lens 101, the second lens 102, the third lens 103, the fourth lens 104, and the fifth lens 105 are illustrated in fig. 41.
For convenience of description, in the following embodiment, STO represents the surface of the diaphragm, S1 represents the object side surface of the first lens element 101, S2 represents the image side surface of the first lens element 101, S3 represents the object side surface of the second lens element 102, S4 represents the image side surface of the second lens element 102, S5 represents the object side surface of the third lens element 103, S6 represents the image side surface of the third lens element 103, S7 represents the object side surface of the fourth lens element 104, S8 represents the image side surface of the fourth lens element 104, S9 represents the object side surface of the fifth lens element 105, S10 represents the image side surface of the fifth lens element 105, S11 represents the object side surface of the infrared filter element, S12 represents the image side surface of the infrared filter element, and S13 represents the image plane. The total optical length of the optical imaging lens 100 is represented by TTL, the maximum image height of the optical imaging lens 100 is represented by ImgH, and the effective focal length of the optical imaging lens 100 is represented by EFL. The i-th order aspheric coefficients are denoted by αi, i=4, 6, 8, 10, 12, 14, 16, 18, 20, and the cone coefficients are denoted by K.
In accordance with the above relationships, table 17 shows the effective focal length EFL, the full field angle FOV, the total optical length TTL, the aperture Fno, the surface type, the radius of curvature, the thickness, the refractive index of the material, and the conic coefficient of the optical imaging lens 100 in the ninth embodiment, wherein the units of the radius of curvature and the thickness are millimeter (mm), as shown in table 17:
TABLE 17
Table 18 shows the aspherical coefficients of the optical imaging lens 100 of the ninth embodiment of the present application, as shown in table 18:
TABLE 18
The non-curved surfaces of the respective lenses of the imaging optical lens 100 satisfy:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/r (i.e., paraxial curvature c is the inverse of radius r in table 17 above); k is the conic constant (given in table 17 above); ai is the correction coefficient of the i-n th order of the aspherical surface, and the higher order coefficients A4, A6, A8, a10, a12, a14, a16, a18, and a20 of the respective lens surfaces S1 to S10 are shown in table 18.
It should be understood that the aspherical surfaces of the respective lenses in the optical imaging lens 100 may use the aspherical surfaces shown in the above-mentioned aspherical surface formulas, or may use other aspherical surface formulas, and the present application is not limited thereto.
The design data of the optical imaging lens 100 according to the ninth embodiment of the present application is given above, the effective focal length EFL is 3.391mm, the full field angle FOV is 87.897 degrees, the total optical length TTL is 4.129mm, and the aperture F-number Fno is 1.868.
In one embodiment provided by the application, the ratio of the total optical length TTL to the maximum image height ImgH of the optical imaging lens satisfies: TTL/imgh=1.237.
In one embodiment provided by the present application, the ratio of the center thickness of the fourth lens on the optical axis to the effective focal length of the fifth lens satisfies: CT 4/f5= -0.311.
In one embodiment of the present application, a ratio of a distance between an intersection point of the image side surface of the fourth lens element and the optical axis and an effective radius vertex of the image side surface of the fourth lens element and a distance between an intersection point of the object side surface of the fifth lens element and the optical axis and an effective radius vertex of the object side surface of the fifth lens element on the optical axis satisfies: SAG 42/sag51=0.91.
In one embodiment provided by the present application, DT11/DT52 = 0.355.
In one embodiment provided by the present application, ET 5/et4=1.829.
In one embodiment provided by the application, f123/f45= -0.009.
In one embodiment provided by the application, CT 4/t34=1.061.
In one embodiment provided by the present application, CT4/CT5 = 2.595.
In one embodiment provided by the present application, f/epd= 1.868.
In one embodiment provided by the present application, EPD/imgh=0.552.
In one embodiment provided by the present application, TTL/f=1.218.
Fig. 42 to 45 describe the optical performance of the optical imaging lens 100 designed in the lens combination manner of the ninth embodiment.
In the ninth embodiment, the optical imaging lens satisfies the requirement of small TTL, and at the same time, higher imaging performance can be obtained.
Examples ten
The optical imaging lens 100 according to an embodiment of the present application sequentially comprises, from an object side to an image side: the first lens 101, the second lens 102, the third lens 103, the fourth lens 104, and the fifth lens 105 are illustrated in fig. 46.
For convenience of description, in the following embodiment, STO represents the surface of the diaphragm, S1 represents the object side surface of the first lens element 101, S2 represents the image side surface of the first lens element 101, S3 represents the object side surface of the second lens element 102, S4 represents the image side surface of the second lens element 102, S5 represents the object side surface of the third lens element 103, S6 represents the image side surface of the third lens element 103, S7 represents the object side surface of the fourth lens element 104, S8 represents the image side surface of the fourth lens element 104, S9 represents the object side surface of the fifth lens element 105, S10 represents the image side surface of the fifth lens element 105, S11 represents the object side surface of the infrared filter element, S12 represents the image side surface of the infrared filter element, and S13 represents the image plane. The total optical length of the optical imaging lens 100 is represented by TTL, the maximum image height of the optical imaging lens 100 is represented by ImgH, and the effective focal length of the optical imaging lens 100 is represented by EFL. The i-th order aspheric coefficients are denoted by αi, i=4, 6, 8, 10, 12, 14, 16, 18, 20, and the cone coefficients are denoted by K.
In accordance with the above relation, table 19 shows the effective focal length EFL, the full field angle FOV, the total optical length TTL, the aperture Fno, the surface type, the radius of curvature, the thickness, the refractive index of the material, and the conic coefficient of the optical imaging lens 100 in embodiment ten, wherein the units of the radius of curvature and the thickness are millimeter (mm), as shown in table 19:
TABLE 19
Table 20 shows the aspherical coefficients of the optical imaging lens 100 of the tenth embodiment of the present application, as shown in table 20:
table 20
The non-curved surfaces of the respective lenses of the imaging optical lens 100 satisfy:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/r (i.e., paraxial curvature c is the inverse of radius r of curvature in table 19 above); k is the conic constant (given in table 19 above); ai is the correction coefficient of the i-n th order of the aspherical surface, and the higher order coefficients A4, A6, A8, a10, a12, a14, a16, a18, and a20 of the respective lens surfaces S1 to S10 are shown in table 20.
It should be understood that the aspherical surfaces of the respective lenses in the optical imaging lens 100 may use the aspherical surfaces shown in the above-mentioned aspherical surface formulas, or may use other aspherical surface formulas, and the present application is not limited thereto.
The design data of the optical imaging lens 100 according to the tenth embodiment of the present application are given above, the effective focal length EFL is 4.254mm, the full field angle FOV is 75.084 degrees, the total optical length TTL is 4.703mm, and the aperture F-number Fno is 1.806.
In one embodiment provided by the application, the ratio of the total optical length TTL to the maximum image height ImgH of the optical imaging lens satisfies: TTL/imgh=1.427.
In one embodiment provided by the present application, the ratio of the center thickness of the fourth lens on the optical axis to the effective focal length of the fifth lens satisfies: CT 4/f5= -0.291.
In one embodiment of the present application, a ratio of a distance between an intersection point of the image side surface of the fourth lens element and the optical axis and an effective radius vertex of the image side surface of the fourth lens element and a distance between an intersection point of the object side surface of the fifth lens element and the optical axis and an effective radius vertex of the object side surface of the fifth lens element on the optical axis satisfies: SAG 42/sag51=0.912.
In one embodiment provided by the application, DT11/DT52 = 0.468.
In one embodiment provided by the present application, ET 5/et4= 1.702.
In one embodiment provided by the application, f123/f45= -0.297.
In one embodiment provided by the application, CT 4/t34=0.901.
In one embodiment provided by the application, CT4/CT5 = 1.934.
In one embodiment provided by the present application, f/epd= 1.806.
In one embodiment provided by the present application, EPD/imgh=0.701.
In one embodiment provided by the present application, TTL/f=1.106.
Fig. 47 to 50 describe optical performance of the optical imaging lens 100 designed in the manner of the ten lens combinations of the embodiment.
In the tenth embodiment, the optical imaging lens satisfies the requirement of a small TTL, and at the same time, higher imaging performance can be obtained.
Example eleven
The optical imaging lens 100 according to an embodiment of the present application sequentially comprises, from an object side to an image side: the first lens 101, the second lens 102, the third lens 103, the fourth lens 104, and the fifth lens 105 are illustrated in fig. 51.
For convenience of description, in the following embodiment, STO represents the surface of the diaphragm, S1 represents the object side surface of the first lens element 101, S2 represents the image side surface of the first lens element 101, S3 represents the object side surface of the second lens element 102, S4 represents the image side surface of the second lens element 102, S5 represents the object side surface of the third lens element 103, S6 represents the image side surface of the third lens element 103, S7 represents the object side surface of the fourth lens element 104, S8 represents the image side surface of the fourth lens element 104, S9 represents the object side surface of the fifth lens element 105, S10 represents the image side surface of the fifth lens element 105, S11 represents the object side surface of the infrared filter element, S12 represents the image side surface of the infrared filter element, and S13 represents the image plane. The total optical length of the optical imaging lens 100 is represented by TTL, the maximum image height of the optical imaging lens 100 is represented by ImgH, and the effective focal length of the optical imaging lens 100 is represented by EFL. The i-th order aspheric coefficients are denoted by αi, i=4, 6, 8, 10, 12, 14, 16, 18, 20, and the cone coefficients are denoted by K.
In accordance with the above relation, table 21 shows the effective focal length EFL, the full field angle FOV, the total optical length TTL, the aperture Fno, the surface type, the radius of curvature, the thickness, the refractive index of the material, and the conic coefficient of the optical imaging lens 100 in the eleventh embodiment, wherein the units of the radius of curvature and the thickness are millimeter (mm), as shown in table 21:
table 21
Table 22 shows the aspherical coefficients of the optical imaging lens 100 of the eleventh embodiment of the present application, as shown in table 22:
table 22
The non-curved surfaces of the respective lenses of the imaging optical lens 100 satisfy:
/>
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/r (i.e., paraxial curvature c is the inverse of radius r of curvature in table 21 above); k is the conic constant (given in table 21 above); ai is the correction coefficient of the i-n th order of the aspherical surface, and the higher order coefficients A4, A6, A8, a10, a12, a14, a16, a18, and a20 of the respective lens surfaces S1 to S10 are shown in table 22.
It should be understood that the aspherical surfaces of the respective lenses in the optical imaging lens 100 may use the aspherical surfaces shown in the above-mentioned aspherical surface formulas, or may use other aspherical surface formulas, and the present application is not limited thereto.
The above-described design data of the optical imaging lens 100 according to the eleventh embodiment of the present application is given, the effective focal length EFL is 4.044mm, the full field angle FOV is 77.001 degrees, the total optical length TTL is 4.760mm, and the aperture F-number Fno is 1.848.
In one embodiment provided by the application, the ratio of the total optical length TTL to the maximum image height ImgH of the optical imaging lens satisfies: TTL/imgh=1.456.
In one embodiment provided by the present application, the ratio of the center thickness of the fourth lens on the optical axis to the effective focal length of the fifth lens satisfies: CT 4/f5= -0.433.
In one embodiment of the present application, a ratio of a distance between an intersection point of the image side surface of the fourth lens element and the optical axis and an effective radius vertex of the image side surface of the fourth lens element and a distance between an intersection point of the object side surface of the fifth lens element and the optical axis and an effective radius vertex of the object side surface of the fifth lens element on the optical axis satisfies: SAG 42/sag51=0.970.
In one embodiment provided by the application, DT11/DT52 = 0.421.
In one embodiment provided by the present application, ET 5/et4= 2.022.
In one embodiment provided by the application, f123/f45= -0.175.
In one embodiment provided by the application, CT 4/t34=1.373.
In one embodiment provided by the application, CT4/CT5 = 2.269.
In one embodiment provided by the present application, f/epd=1.848.
In one embodiment provided by the present application, EPD/imgh=0.672.
In one embodiment provided by the present application, TTL/f=1.177.
Fig. 52 to 55 describe the optical performance of the optical imaging lens 100 designed in the lens combination manner of the eleventh embodiment.
In the eleventh embodiment, the optical imaging lens satisfies the requirement of a small TTL, and at the same time, a higher imaging performance can be obtained.
In addition, TTL/ImgH ratios, CT4/f5 ratios, SAG42/SAG51 ratios, DT11/DT52 ratios, ET5/ET4 ratios, f123/f45 ratios, CT4/T34 ratios, CT4/CT5 ratios, f/EPD ratios, EPD/ImgH ratios, and TTL/f ratios corresponding to examples one through eleven are shown in Table 23:
table 23
While the application has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the application. The application is not to be limited by the specific embodiments disclosed herein and other embodiments are within the scope of the application as defined by the appended claims.
Claims (10)
1. An optical imaging lens, comprising, in order from an object side to an image side along an optical axis:
a first lens having positive optical power, an object side surface of which is convex near an optical axis;
a second lens having optical power, an image side surface of which is concave near the optical axis;
a third lens having optical power;
a fourth lens having optical power;
a fifth lens element with negative refractive power having a concave object-side surface near the optical axis and a concave image-side surface near the optical axis;
wherein, the optical imaging lens satisfies the following conditional expression:
TTL/ImgH<1.55,-0.6<CT4/f5<-0.2,0.75<SAG42/SAG51<1.37;
wherein TTL is the distance between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis; imgH is the maximum image height of the optical imaging lens; CT4 is the center thickness of the fourth lens on the optical axis; f5 is the effective focal length of the fifth lens; SAG42 is the distance on the optical axis from the intersection of the image side of the fourth lens and the optical axis to the vertex of the effective radius of the image side of the fourth lens; SAG51 is the distance on the optical axis from the point of intersection of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side surface of the fifth lens.
2. The optical imaging lens of claim 1, wherein the optical imaging lens satisfies the following conditional expression:
0.35<DT11/DT52<0.50;
Wherein DT11 is the maximum effective radius of the object-side surface of the first lens element, and DT52 is the maximum effective radius of the image-side surface of the fifth lens element.
3. The optical imaging lens according to claim 1 or 2, wherein the optical imaging lens satisfies the following conditional expression: 1.45< ET5/ET4<2.4;
wherein ET5 is the edge thickness of the fifth lens; ET4 is the edge thickness of the fourth lens.
4. The optical imaging lens of claim 3, wherein the optical imaging lens satisfies the following conditional expression:
-0.3<f123/f45<0.15;
wherein f123 is a combined focal length of the first lens, the second lens, and the third lens; f45 is a combined focal length of the fourth lens and the fifth lens.
5. The optical imaging lens of claim 4, wherein the optical imaging lens satisfies the following conditional expression:
0.9<CT4/T34<1.82;
wherein CT4 is the center thickness of the fourth lens on the optical axis; t34 is a separation distance of the third lens and the fourth lens on the optical axis.
6. The optical imaging lens according to claim 4 or 5, wherein the optical imaging lens satisfies the following conditional expression: 1.7< CT4/CT5<2.61;
Wherein CT4 is the center thickness of the fourth lens on the optical axis; CT5 is the center thickness of the fifth lens on the optical axis.
7. The optical imaging lens of claim 6, wherein the optical imaging lens satisfies the following conditional expression: 1.7< f/EPD <1.9;
wherein f is the total effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens.
8. The optical imaging lens according to any one of claims 1 to 7, wherein the optical imaging lens satisfies the following conditional expression:
0.55<EPD/ImgH<0.75;
wherein EPD is the entrance pupil diameter of the optical imaging lens, and ImgH is the maximum image height of the optical imaging lens.
9. The optical imaging lens of claim 8, wherein the optical imaging lens satisfies the following conditional expression:
1.1<TTL/f<1.3;
wherein TTL is the distance between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis; f is the total effective focal length of the optical imaging lens.
10. A camera module comprising an optical imaging lens according to any one of claims 1 to 9.
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CN102313970A (en) * | 2010-07-09 | 2012-01-11 | 大立光电股份有限公司 | Imaging optics lens group |
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CN113031228A (en) * | 2021-05-27 | 2021-06-25 | 江西联益光学有限公司 | Optical lens and imaging apparatus |
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CN102313970A (en) * | 2010-07-09 | 2012-01-11 | 大立光电股份有限公司 | Imaging optics lens group |
CN106842523A (en) * | 2017-03-03 | 2017-06-13 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
CN110361852A (en) * | 2019-07-24 | 2019-10-22 | Oppo广东移动通信有限公司 | Camera lens, camera module and electronic equipment |
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