CN211955957U - Optical imaging lens - Google Patents

Abstract

The application discloses an optical imaging lens, this optical imaging lens includes along the optical axis from the object side to the image side in proper order: a first lens having a positive optical power; a second lens having an optical power; a third lens having optical power; the fourth lens with negative focal power has a concave object-side surface and a convex image-side surface; a fifth lens having a positive optical power; and a sixth lens with negative focal power, the object side surface of which is convex; the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens satisfy that: the height of the optical imaging lens is more than 4.0mm and less than ImgH/(TTL/ImgH) < 7.0mm, so that the optical imaging lens has the characteristics of super-large image surface, ultra-thinning, high-quality imaging and the like.

Description

Optical imaging lens

Technical Field

The present application relates to the field of optical elements, and in particular, to an optical imaging lens including six lenses.

Background

In recent years, with the rapid development of intelligent terminals such as mobile phones, the improvement of the mobile phone photographing performance is becoming a direction of the competition of mobile phone manufacturers of various brands, and mobile phones with super-large image planes, ultra-thinness and super-definition are getting hot. Generally, the larger the pixel of the camera module, the larger the image plane of the optical imaging lens. One development trend of high-end camera mobile phones is ultra-large image plane and ultra-definition, and the main camera module of the flagship aircraft of the current mainstream mobile phone brand basically achieves more than 4800 ten thousand pixels, so that the imaging lens of the camera mobile phone is mostly composed of six-piece or seven-piece lenses.

However, another development trend of high-end camera phones is ultra-thinning, so the design of the mobile phone needs to be ultra-thinned, and the structural design of the camera module also needs to be ultra-thinned, which also has a corresponding requirement on the height of the camera module.

SUMMERY OF THE UTILITY MODEL

The present application provides an optical imaging lens applicable to portable electronic products, such as an optical imaging lens having an ultra-large image plane and ultra-thin characteristics, which can at least solve or partially solve at least one of the above-mentioned disadvantages in the prior art.

An aspect of the present application provides an optical imaging lens, which may include, in order from an object side to an image side along an optical axis: a first lens having a positive optical power; a second lens having an optical power; a third lens having optical power; the fourth lens with negative focal power has a concave object-side surface and a convex image-side surface; a fifth lens having a positive optical power; and a sixth lens having a negative refractive power, an object-side surface of which is convex.

In one embodiment, a distance TTL from an object side surface of the first lens element to an imaging surface of the optical imaging lens on an optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens may satisfy: 4.0mm < ImgH/(TTL/ImgH) < 7.0 mm.

In one embodiment, a distance TTL from an object side surface of the first lens element to an imaging surface of the optical imaging lens on an optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens may satisfy: TTL/ImgH is less than 1.3.

In one embodiment, the total effective focal length f of the optical imaging lens and the maximum half field angle Semi-FOV of the optical imaging lens may satisfy: 5.0mm < f × tan (Semi-FOV) < 7.0 mm.

In one embodiment, the effective focal length f1 of the first lens and the effective focal length f5 of the fifth lens may satisfy: f1/f5 is more than 0.7 and less than 1.2.

In one embodiment, the effective focal length f4 of the fourth lens, the effective focal length f6 of the sixth lens, and the total effective focal length f of the optical imaging lens may satisfy: 0.6 < (f6-f4)/f < 2.0.

In one embodiment, the radius of curvature R7 of the object-side surface of the fourth lens and the radius of curvature R8 of the image-side surface of the fourth lens may satisfy: 0.1 < R7/R8 < 0.7.

In one embodiment, a center thickness CT5 of the fifth lens on the optical axis, a center thickness CT6 of the sixth lens on the optical axis, and an air interval T56 of the fifth lens and the sixth lens on the optical axis may satisfy: 0.7 < (CT5+ CT6)/T56 < 1.5.

In one embodiment, the effective focal length f3 of the third lens and the radius of curvature R6 of the image side surface of the third lens may satisfy: -2.7 < f3/R6 < -1.6.

In one embodiment, the maximum effective radius DT11 of the object-side surface of the first lens, the maximum effective radius DT12 of the image-side surface of the first lens, and the maximum effective radius DT62 of the image-side surface of the sixth lens may satisfy: 1.3 < DT62/(DT11+ DT12) < 1.7.

In one embodiment, the central thickness CT5 of the fifth lens on the optical axis and the edge thickness ET5 of the fifth lens may satisfy: 1.6 < CT5/ET5 < 2.4.

In one embodiment, an on-axis distance SAG41 from an intersection point of an object-side surface of the fourth lens and the optical axis to an effective radius vertex of an object-side surface of the fourth lens, an on-axis distance SAG42 from an intersection point of an image-side surface of the fourth lens and the optical axis to an effective radius vertex of an image-side surface of the fourth lens, an on-axis distance SAG51 from an intersection point of an object-side surface of the fifth lens and the optical axis to an effective radius vertex of an object-side surface of the fifth lens, and an on-axis distance SAG52 from an intersection point of an image-side surface of the fifth lens and the optical axis to an effective radius vertex of an image-side surface of the fifth lens may satisfy: 0.5 < (SAG41+ SAG42)/(SAG51+ SAG52) < 0.9.

In one embodiment, an on-axis distance SAG32 from an intersection point of an image-side surface of the third lens and the optical axis to an effective radius vertex of the image-side surface of the third lens and an on-axis distance SAG62 from an intersection point of an image-side surface of the sixth lens and the optical axis to an effective radius vertex of the image-side surface of the sixth lens may satisfy: 1.5 < SAG62/SAG32 < 3.4.

In one embodiment, the combined focal length f123 of the first lens, the second lens and the third lens and the total effective focal length f of the optical imaging lens may satisfy: f123/f is more than 0.7 and less than 1.0.

The application provides an optical imaging lens adopts a plurality of lenses, for example first lens to sixth lens, through the relation between the image height and the optics total length of reasonable control optical imaging lens to optimize the focal power, the face type that set up each lens, make optical imaging lens can realize characteristics such as super large image plane, ultra-thin, low sensitivity and high imaging quality, simultaneously each lens's compact structure, the shaping processing performance is good, can promote the production yield of making a video recording the module. Meanwhile, the optical imaging lens can ensure the excellent performance of the finite distance imaging while realizing the excellent performance of the infinite distance imaging.

Drawings

Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments when taken in conjunction with the accompanying drawings. In the drawings:

fig. 1 shows a schematic structural view of an optical imaging lens according to embodiment 1 of the present application;

fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 1;

fig. 3 is a schematic structural view showing an optical imaging lens according to embodiment 2 of the present application;

fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 2;

fig. 5 is a schematic structural view showing an optical imaging lens according to embodiment 3 of the present application;

fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 3;

fig. 7 is a schematic structural view showing an optical imaging lens according to embodiment 4 of the present application;

fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 4;

fig. 9 is a schematic structural view showing an optical imaging lens according to embodiment 5 of the present application;

fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 5;

fig. 11 is a schematic structural view showing an optical imaging lens according to embodiment 6 of the present application;

fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 6;

fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application;

fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 7;

fig. 15 is a schematic structural view showing an optical imaging lens according to embodiment 8 of the present application;

fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 8.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of the present application.

In the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.

Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The features, principles, and other aspects of the present application are described in detail below.

An optical imaging lens according to an exemplary embodiment of the present application may include six lenses having optical powers, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The six lenses are arranged in order from the object side to the image side along the optical axis. In the first to sixth lenses, an air space may be provided between each adjacent two lenses.

In an exemplary embodiment, the first lens may have a positive optical power; the second lens has positive focal power or negative focal power; the third lens has positive focal power or negative focal power; the fourth lens element can have negative focal power, and the object-side surface can be a concave surface and the image-side surface can be a convex surface; the fifth lens may have a positive optical power; and the sixth lens element may have a negative optical power, and the object-side surface thereof may be convex. The optical focal power and the surface type of each lens in the optical system are reasonably matched, and the reasonability of the structure of the optical imaging lens is guaranteed, so that the camera module can realize the ultra-clear photographing function, the primary aberration of the optical imaging lens can be well corrected, and the tolerance sensitivity of the optical system is reduced.

In an exemplary embodiment, the object-side surface of the first lens may be convex and the image-side surface may be concave.

In an exemplary embodiment, the image side surface of the second lens may be concave.

In an exemplary embodiment, the object side surface of the fifth lens may be convex.

In an exemplary embodiment, an image side surface of the sixth lens may be concave.

In an exemplary embodiment, a distance TTL on an optical axis from an object side surface of the first lens to an imaging surface of the optical imaging lens and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens may satisfy: 4.0mm < ImgH/(TTL/ImgH) < 7.0 mm. For example, 4.0mm < ImgH/(TTL/ImgH) < 5.0 mm. The distance between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis and the correlation between the half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens are reasonably controlled, and the optical imaging lens can be ensured to have the characteristics of an ultra-large image surface and ultra-thinness.

In an exemplary embodiment, a distance TTL on an optical axis from an object side surface of the first lens to an imaging surface of the optical imaging lens and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens may satisfy: TTL/ImgH is less than 1.3. For example, 1.2 < TTL/ImgH < 1.3. The ratio of the distance from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis to half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens is controlled within a reasonable numerical range, so that the imaging lens can have the performance of an ultra-large image plane, the total length of an optical system of the imaging lens is shortened, and the ultra-large image plane and ultra-thin structure of the optical imaging lens are realized.

In an exemplary embodiment, the total effective focal length f of the optical imaging lens and the maximum half field angle Semi-FOV of the optical imaging lens may satisfy: 5.0mm < f × tan (Semi-FOV) < 7.0 mm. For example, 5.0mm < f × tan (Semi-FOV) < 6.0 mm. The mutual relation between the total effective focal length of the optical imaging lens and the maximum half field angle of the optical imaging lens is reasonably controlled, the optical system can be ensured to have a structure with an ultra-large image plane, and the super-definition shooting function of the optical imaging lens is facilitated.

In an exemplary embodiment, the effective focal length f1 of the first lens and the effective focal length f5 of the fifth lens may satisfy: f1/f5 is more than 0.7 and less than 1.2. The ratio of the effective focal length of the first lens to the effective focal length of the fifth lens is controlled within a reasonable numerical range, so that the reasonable configuration of the focal powers of the first lens and the fifth lens is facilitated, and the aberration of the optical imaging lens is reduced.

In an exemplary embodiment, the effective focal length f4 of the fourth lens, the effective focal length f6 of the sixth lens, and the total effective focal length f of the optical imaging lens may satisfy: 0.6 < (f6-f4)/f < 2.0. For example, 0.6 < (f6-f4)/f < 1.7. The mutual relation among the effective focal length of the fourth lens, the effective focal length of the sixth lens and the total effective focal length of the optical imaging lens is reasonably controlled, so that the reasonable distribution of the focal power of the fourth lens and the focal power of the sixth lens on the space is facilitated, and the aberration of the optical imaging lens is reduced.

In an exemplary embodiment, the radius of curvature R7 of the object-side surface of the fourth lens and the radius of curvature R8 of the image-side surface of the fourth lens may satisfy: 0.1 < R7/R8 < 0.7. For example, 0.4 < R7/R8 < 0.7. The ratio of the curvature radius of the object side surface and the curvature radius of the image side surface of the fourth lens are controlled within a reasonable numerical range, so that the contribution of the fourth lens to the aberration of the optical imaging lens can be reasonably adjusted.

In an exemplary embodiment, a center thickness CT5 of the fifth lens on the optical axis, a center thickness CT6 of the sixth lens on the optical axis, and an air interval T56 of the fifth lens and the sixth lens on the optical axis may satisfy: 0.7 < (CT5+ CT6)/T56 < 1.5. The central thickness of the fifth lens and the sixth lens on the optical axis and the correlation between the air intervals of the fifth lens and the sixth lens on the optical axis are reasonably controlled, so that the influence of the overlarge thickness of the lenses on the spatial distribution of the lenses in the system is favorably avoided, and the assembly of the optical imaging lens is facilitated.

In an exemplary embodiment, the effective focal length f3 of the third lens and the radius of curvature R6 of the image side surface of the third lens may satisfy: -2.7 < f3/R6 < -1.6. The ratio of the effective focal length of the third lens to the curvature radius of the image side surface of the third lens is controlled within a reasonable numerical range, so that the third lens is favorably processed and molded. Alternatively, the third lens may have a positive optical power, and the image-side surface thereof may be convex.

In an exemplary embodiment, the maximum effective radius DT11 of the object-side surface of the first lens, the maximum effective radius DT12 of the image-side surface of the first lens, and the maximum effective radius DT62 of the image-side surface of the sixth lens may satisfy: 1.3 < DT62/(DT11+ DT12) < 1.7. The mutual relation between the maximum effective radius of the object side surface and the image side surface of the first lens and the maximum effective radius of the image side surface of the sixth lens is reasonably controlled, the influence on the space distribution of the lenses caused by the overlarge effective radius of the lenses can be avoided, and the assembly of the optical imaging lens is facilitated.

In an exemplary embodiment, the central thickness CT5 of the fifth lens on the optical axis and the edge thickness ET5 of the fifth lens may satisfy: 1.6 < CT5/ET5 < 2.4. The ratio of the central thickness to the edge thickness of the five lenses on the optical axis is controlled within a reasonable numerical range, so that the processing and molding of the fifth lens are facilitated.

In an exemplary embodiment, an on-axis distance SAG41 of an intersection point of an object-side surface and an optical axis of the fourth lens to an effective radius vertex of the object-side surface of the fourth lens, an on-axis distance SAG42 of an intersection point of an image-side surface and an optical axis of the fourth lens to an effective radius vertex of an image-side surface of the fourth lens, an on-axis distance SAG51 of an intersection point of an object-side surface and an optical axis of the fifth lens to an effective radius vertex of an object-side surface of the fifth lens, and an on-axis distance SAG52 of an intersection point of an image-side surface and an optical axis of the fifth lens to an effective radius vertex of an image-side surface of the fifth lens may satisfy: 0.5 < (SAG41+ SAG42)/(SAG51+ SAG52) < 0.9. The mutual relation between the rise of the object side surface and the image side surface of the fourth lens and the rise of the object side surface and the image side surface of the fifth lens is reasonably controlled, the bending degree of the fourth lens and the bending degree of the fifth lens are limited, and the processing and forming difficulty of the fourth lens and the fifth lens is reduced.

In an exemplary embodiment, an on-axis distance SAG32 from an intersection point of an image-side surface of the third lens and the optical axis to an effective radius vertex of the image-side surface of the third lens and an on-axis distance SAG62 from an intersection point of an image-side surface of the sixth lens and the optical axis to an effective radius vertex of the image-side surface of the sixth lens may satisfy: 1.5 < SAG62/SAG32 < 3.4. The ratio of the rise of the image side surface of the sixth lens to the rise of the image side surface of the third lens is controlled within a reasonable numerical range, so that the bending degree of the third lens and the bending degree of the sixth lens are limited, and the processing and forming difficulty of the third lens and the sixth lens is reduced.

In an exemplary embodiment, the combined focal length f123 of the first lens, the second lens and the third lens and the total effective focal length f of the optical imaging lens may satisfy: f123/f is more than 0.7 and less than 1.0. The proportion relation between the combined focal length of the first lens, the second lens and the third lens and the total effective focal length of the optical imaging lens is reasonably controlled, so that the distribution of the focal power of the first lens, the second lens and the third lens in a system space is favorably and reasonably distributed, and the aberration of the optical imaging lens is favorably reduced.

In an exemplary embodiment, the optical imaging lens may further include a diaphragm. The diaphragm may be disposed at an appropriate position as required. For example, a diaphragm may be disposed between the object side 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 on the imaging surface.

The application provides an optical imaging lens with characteristics of super-large image surface, ultra-thinness and the like. The optical imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, six lenses as described above. By reasonably distributing the focal power, the surface type, the central thickness of each lens, the on-axis distance between each lens and the like, the incident light can be effectively converged, the optical total length of the imaging lens is reduced, the machinability of the imaging lens is improved, and the optical imaging lens is more favorable for production and processing.

In an exemplary embodiment, at least one of the mirror surfaces of each lens is an aspheric mirror surface, i.e., at least one of the object side surface of the first lens to the image side surface of the sixth lens is an aspheric mirror surface. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics, and has advantages of improving distortion aberration and improving astigmatic aberration. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of an object-side surface and an image-side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens is an aspheric mirror surface. Optionally, each of the first, second, third, fourth, fifth, and sixth lenses has an object-side surface and an image-side surface that are aspheric mirror surfaces.

The present application also provides an imaging device whose electron photosensitive element may be a photo-coupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device may be a stand-alone imaging device such as a digital camera, or may be an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

However, it will be appreciated by those skilled in the art that the number of lenses constituting an optical imaging lens may be varied to achieve the various results and advantages described in the present specification without departing from the claimed subject matter. For example, although six lenses are exemplified in the embodiment, the optical imaging lens is not limited to including six lenses. The optical imaging lens may also include other numbers of lenses, if desired.

Specific examples of an optical imaging lens applicable to the above-described embodiments are further described below with reference to the drawings.

Example 1

An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 is a schematic view showing a structure of an optical imaging lens according to embodiment 1 of the present application.

As shown in fig. 1, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

Table 1 shows a basic parameter table of the optical imaging lens of embodiment 1, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).

TABLE 1

In the present embodiment, the total effective focal length f of the optical imaging lens is 5.55mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.52mm, and the half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 is 5.29 mm.

In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 through the sixth lens E6 are aspheric surfaces, and the surface shape x of each aspheric lens can be defined by, but is not limited to, the following aspheric surface formula:

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; paraxial curvature of aspheric surfaceAnd c is 1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1 to S12 used in example 1₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈And A₂₀。

TABLE 2

Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different image heights. Fig. 2D 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 lens. 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. Fig. 3 shows a schematic structural diagram of an optical imaging lens according to embodiment 2 of the present application.

As shown in fig. 3, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In the present embodiment, the total effective focal length f of the optical imaging lens is 5.55mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.52mm, and the half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 is 5.16 mm.

Table 3 shows a basic parameter table of the optical imaging lens of embodiment 2, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).

TABLE 3

In embodiment 2, both the object-side surface and the image-side surface of any one of the first lens E1 through the sixth lens E6 are aspheric. Table 4 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S12 used in example 2₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈And A₂₀。

TABLE 4

Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 2. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different image heights. Fig. 4D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the optical imaging lens according to embodiment 2 can achieve good imaging quality.

Example 3

An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic structural diagram of an optical imaging lens according to embodiment 3 of the present application.

As shown in fig. 5, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a concave object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In the present embodiment, the total effective focal length f of the optical imaging lens is 5.58mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.52mm, and the half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 is 5.24 mm.

Table 5 shows a basic parameter table of the optical imaging lens of embodiment 3, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).

TABLE 5

In embodiment 3, both the object-side surface and the image-side surface of any one of the first lens E1 through the sixth lens E6 are aspheric. Table 6 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S12 used in example 3₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈And A₂₀。

TABLE 6

Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 3. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different image heights. Fig. 6D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 3, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the optical imaging lens according to embodiment 3 can achieve good imaging quality.

Example 4

An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application.

As shown in fig. 7, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative 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 positive power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In the present embodiment, the total effective focal length f of the optical imaging lens is 5.57mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.52mm, and the half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 is 5.20 mm.

Table 7 shows a basic parameter table of the optical imaging lens of embodiment 4, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).

TABLE 7

In embodiment 4, both the object-side surface and the image-side surface of any one of the first lens E1 through the sixth lens E6 are aspheric. Table 8 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S12 used in example 4₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈And A₂₀。

TABLE 8

Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 4. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different image heights. Fig. 8D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the optical imaging lens according to embodiment 4 can achieve good imaging quality.

Example 5

An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic structural diagram of an optical imaging lens according to embodiment 5 of the present application.

As shown in fig. 9, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In the present embodiment, the total effective focal length f of the optical imaging lens is 5.49mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.52mm, and the half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 is 5.22 mm.

Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).

TABLE 9

In embodiment 5, both the object-side surface and the image-side surface of any one of the first lens E1 through the sixth lens E6 are aspheric. Table 10 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S12 used in example 5₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈And A₂₀。

Watch 10

Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 5. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different image heights. Fig. 10D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 5, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens according to embodiment 5 can achieve good imaging quality.

Example 6

An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application.

As shown in fig. 11, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In the present embodiment, the total effective focal length f of the optical imaging lens is 5.47mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.52mm, and the half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 is 5.13 mm.

Table 11 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).

TABLE 11

In embodiment 6, both the object-side surface and the image-side surface of any one of the first lens E1 through the sixth lens E6 are aspheric. Table 12 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S12 used in example 6₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈And A₂₀。

TABLE 12

Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 6. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different image heights. Fig. 12D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 6, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens according to embodiment 6 can achieve good imaging quality.

Example 7

An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application.

As shown in fig. 13, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a concave object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In the present embodiment, the total effective focal length f of the optical imaging lens is 5.49mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.52mm, and the half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 is 5.25 mm.

Table 13 shows a basic parameter table of the optical imaging lens of embodiment 7, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).

Watch 13

In embodiment 7, both the object-side surface and the image-side surface of any one of the first lens E1 through the sixth lens E6 are aspheric. Table 14 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S12 used in example 7₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈And A₂₀。

TABLE 14

Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 7. Fig. 14C shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different image heights. Fig. 14D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 7, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 14A to 14D, the optical imaging lens according to embodiment 7 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. Fig. 15 shows a schematic structural diagram of an optical imaging lens according to embodiment 8 of the present application.

As shown in fig. 15, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative 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 positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In the present embodiment, the total effective focal length f of the optical imaging lens is 5.76mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.84mm, and the half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 is 5.50 mm.

Table 15 shows a basic parameter table of the optical imaging lens of embodiment 8, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).

Watch 15

In example 8, the object side surface and the image of any one of the first lens E1 to the sixth lens E6The side surfaces are aspheric surfaces. Table 16 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S12 used in example 8₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈And A₂₀。

TABLE 16

Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 8, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 8. Fig. 16C shows a distortion curve of the optical imaging lens of embodiment 8, which represents distortion magnitude values corresponding to different image heights. Fig. 16D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 8, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 16A to 16D, the optical imaging lens according to embodiment 8 can achieve good imaging quality.

In summary, examples 1 to 8 each satisfy the relationship shown in table 17.

Conditions/examples	1	2	3	4	5	6	7	8
									ImgH/(TTL/ImgH)(mm)	4.28	4.08	4.21	4.15	4.17	4.04	4.23	4.43
TTL/ImgH	1.23	1.26	1.24	1.25	1.25	1.27	1.24	1.24
									f×tan(Semi-FOV)(mm)	5.20	5.05	5.13	5.12	5.12	5.01	5.14	5.40
f1/f5	0.81	1.06	0.73	0.72	0.80	1.00	0.79	0.80
									(f6-f4)/f	0.67	0.76	1.61	1.16	0.90	0.67	1.07	0.85
R7/R8	0.57	0.50	0.59	0.55	0.62	0.51	0.64	0.60
									(CT5+CT6)/T56	1.38	0.79	0.88	0.94	1.17	0.82	0.97	1.21
f3/R6	-1.83	-2.68	-2.33	-1.61	-2.51	-2.48	-2.26	-1.65
									DT62/(DT11+DT12)	1.45	1.41	1.44	1.45	1.51	1.50	1.49	1.49
CT5/ET5	1.86	1.93	1.68	1.93	2.14	2.13	2.35	1.98
									(SAG41+SAG42)/(SAG51+SAG52)	0.88	0.71	0.78	0.55	0.86	0.69	0.81	0.71
SAG62/SAG32	3.30	2.51	2.59	2.77	1.97	2.21	1.54	1.89
									f123/f	0.89	0.84	0.97	0.90	0.92	0.80	0.93	0.90

TABLE 17

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (26)

1. An optical imaging lens, in order from an object side to an image side along an optical axis, comprising:

a first lens having a positive optical power;

a second lens having an optical power;

a third lens having optical power;

the fourth lens with negative focal power has a concave object-side surface and a convex image-side surface;

a fifth lens having a positive optical power; and

a sixth lens element having a negative refractive power, the object-side surface of which is convex;

wherein, a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens on the optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens satisfy:

4.0mm＜ImgH/(TTL/ImgH)＜7.0mm。

2. the optical imaging lens of claim 1, wherein a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens on the optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens satisfy:

TTL/ImgH＜1.3。

3. the optical imaging lens according to claim 1, wherein the total effective focal length f of the optical imaging lens and the maximum half field angle Semi-FOV of the optical imaging lens satisfy:

5.0mm＜f×tan(Semi-FOV)＜7.0mm。

4. the optical imaging lens of claim 1, wherein the effective focal length f1 of the first lens and the effective focal length f5 of the fifth lens satisfy:

0.7＜f1/f5＜1.2。

5. the optical imaging lens of claim 1, wherein the effective focal length f4 of the fourth lens, the effective focal length f6 of the sixth lens, and the total effective focal length f of the optical imaging lens satisfy:

0.6＜(f6-f4)/f＜2.0。

6. the optical imaging lens of claim 1, wherein the radius of curvature R7 of the object-side surface of the fourth lens and the radius of curvature R8 of the image-side surface of the fourth lens satisfy:

0.1＜R7/R8＜0.7。

7. the optical imaging lens according to claim 1, wherein a center thickness CT5 of the fifth lens on the optical axis, a center thickness CT6 of the sixth lens on the optical axis, and an air interval T56 of the fifth lens and the sixth lens on the optical axis satisfy:

0.7＜(CT5+CT6)/T56＜1.5。

8. the optical imaging lens of claim 1, wherein the effective focal length f3 of the third lens and the radius of curvature R6 of the image side surface of the third lens satisfy:

-2.7＜f3/R6＜-1.6。

9. the optical imaging lens according to claim 1, wherein a maximum effective radius DT11 of an object side surface of the first lens, a maximum effective radius DT12 of an image side surface of the first lens, and a maximum effective radius DT62 of an image side surface of the sixth lens satisfy:

1.3＜DT62/(DT11+DT12)＜1.7。

10. the optical imaging lens of claim 1, wherein a center thickness CT5 of the fifth lens on the optical axis and an edge thickness ET5 of the fifth lens satisfy:

1.6＜CT5/ET5＜2.4。

11. the optical imaging lens according to claim 1,

0.5＜(SAG41+SAG42)/(SAG51+SAG52)＜0.9，

wherein SAG41 is an on-axis distance from an intersection of an object-side surface of the fourth lens and the optical axis to an effective radius vertex of an object-side surface of the fourth lens, SAG42 is an on-axis distance from an intersection of an image-side surface of the fourth lens and the optical axis to an effective radius vertex of an image-side surface of the fourth lens, SAG51 is an on-axis distance from an intersection of an object-side surface of the fifth lens and the optical axis to an effective radius vertex of an object-side surface of the fifth lens, and SAG52 is an on-axis distance from an intersection of an image-side surface of the fifth lens and the optical axis to an effective radius vertex of an image-side surface of the fifth lens.

12. The optical imaging lens according to claim 1,

1.5＜SAG62/SAG32＜3.4，

SAG32 is an on-axis distance from an intersection point of an image-side surface of the third lens and the optical axis to an effective radius vertex of the image-side surface of the third lens, and SAG62 is an on-axis distance from an intersection point of an image-side surface of the sixth lens and the optical axis to an effective radius vertex of the image-side surface of the sixth lens.

13. The optical imaging lens of claim 1, wherein a combined focal length f123 of the first lens, the second lens and the third lens and a total effective focal length f of the optical imaging lens satisfy:

0.7＜f123/f＜1.0。

14. an optical imaging lens, in order from an object side to an image side along an optical axis, comprising:

a first lens having a positive optical power;

a second lens having an optical power;

a third lens having optical power;

the fourth lens with negative focal power has a concave object-side surface and a convex image-side surface;

a fifth lens having a positive optical power; and

a sixth lens element having a negative refractive power, the object-side surface of which is convex;

wherein the total effective focal length f of the optical imaging lens and the maximum half field angle Semi-FOV of the optical imaging lens satisfy:

5.0mm＜f×tan(Semi-FOV)＜7.0mm。

15. the optical imaging lens of claim 14, wherein a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens on the optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens satisfy:

TTL/ImgH＜1.3。

16. the optical imaging lens of claim 15, wherein a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens on the optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens satisfy:

4.0mm＜ImgH/(TTL/ImgH)＜7.0mm。

17. the optical imaging lens of claim 14, wherein the effective focal length f1 of the first lens and the effective focal length f5 of the fifth lens satisfy:

0.7＜f1/f5＜1.2。

18. the optical imaging lens of claim 14, wherein the effective focal length f4 of the fourth lens, the effective focal length f6 of the sixth lens, and the total effective focal length f of the optical imaging lens satisfy:

0.6＜(f6-f4)/f＜2.0。

19. the optical imaging lens of claim 14, wherein the radius of curvature R7 of the object-side surface of the fourth lens and the radius of curvature R8 of the image-side surface of the fourth lens satisfy:

0.1＜R7/R8＜0.7。

20. the optical imaging lens according to claim 14, wherein a center thickness CT5 of the fifth lens on the optical axis, a center thickness CT6 of the sixth lens on the optical axis, and an air interval T56 of the fifth lens and the sixth lens on the optical axis satisfy:

0.7＜(CT5+CT6)/T56＜1.5。

21. the optical imaging lens of claim 14, wherein the effective focal length f3 of the third lens and the radius of curvature R6 of the image side surface of the third lens satisfy:

-2.7＜f3/R6＜-1.6。

22. the optical imaging lens according to claim 14, wherein the maximum effective radius DT11 of the object side surface of the first lens, the maximum effective radius DT12 of the image side surface of the first lens, and the maximum effective radius DT62 of the image side surface of the sixth lens satisfy:

1.3＜DT62/(DT11+DT12)＜1.7。

23. the optical imaging lens of claim 14, wherein a center thickness CT5 of the fifth lens on the optical axis and an edge thickness ET5 of the fifth lens satisfy:

1.6＜CT5/ET5＜2.4。

24. the optical imaging lens of claim 14,

0.5＜(SAG41+SAG42)/(SAG51+SAG52)＜0.9，

wherein SAG41 is an on-axis distance from an intersection of an object-side surface of the fourth lens and the optical axis to an effective radius vertex of an object-side surface of the fourth lens, SAG42 is an on-axis distance from an intersection of an image-side surface of the fourth lens and the optical axis to an effective radius vertex of an image-side surface of the fourth lens, SAG51 is an on-axis distance from an intersection of an object-side surface of the fifth lens and the optical axis to an effective radius vertex of an object-side surface of the fifth lens, and SAG52 is an on-axis distance from an intersection of an image-side surface of the fifth lens and the optical axis to an effective radius vertex of an image-side surface of the fifth lens.

25. The optical imaging lens of claim 14,

1.5＜SAG62/SAG32＜3.4，

SAG32 is an on-axis distance from an intersection point of an image-side surface of the third lens and the optical axis to an effective radius vertex of the image-side surface of the third lens, and SAG62 is an on-axis distance from an intersection point of an image-side surface of the sixth lens and the optical axis to an effective radius vertex of the image-side surface of the sixth lens.

26. The optical imaging lens of claim 14, wherein a combined focal length f123 of the first lens, the second lens, and the third lens and a total effective focal length f of the optical imaging lens satisfy:

0.7＜f123/f＜1.0。

Images