CN113933961A

CN113933961A - Optical lens, camera module and electronic equipment

Info

Publication number: CN113933961A
Application number: CN202111157534.1A
Authority: CN
Inventors: 徐标; 李明; 宋琦
Original assignee: Jiangxi Jingchao Optical Co Ltd
Current assignee: Jiangxi Jingchao Optical Co Ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-01-14

Abstract

The invention discloses an optical lens, a camera module and an electronic device, wherein the optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are arranged in sequence from an object side to an image side along an optical axis, the first lens has positive refractive power, the second lens has positive refractive power, the third lens has refractive power, the fourth lens has positive refractive power, the fifth lens has refractive power, the sixth lens has negative refractive power, and the optical lens meets the following relational expression: imgh ^2/TTL/Fno >1.2 mm. Wherein, TTL is a distance on an optical axis from an object-side surface of the first lens element to an imaging surface of the optical lens, imageh is a radius of a maximum effective imaging circle of the optical lens, and Fno is an f-number of the optical lens. The optical lens, the camera module and the electronic equipment provided by the invention can realize two-waveband imaging of a visible light waveband and a near infrared waveband, have good camera performance and realize miniaturization design.

Description

Optical lens, camera module and electronic equipment

Technical Field

The invention relates to the technical field of optical imaging, in particular to an optical lens, a camera module and electronic equipment.

Background

At present, with the continuous change of market demands, the application field of the optical lens is also continuously expanded, and the optical lens is not only applied to photography, but also increasingly applied to the fields of vehicle-mounted, monitoring, virtual reality, face recognition and the like. However, with the expansion of the application field, it is necessary to have multiple optical lenses at the same time to meet the increasing application requirements, but the design of multiple optical lenses affects the appearance of the device and increases the cost and complexity of the device, so how to design a miniaturized dual-band (e.g. infrared band and visible band) optical lens with good image capturing performance becomes an urgent problem to be solved.

Disclosure of Invention

The embodiment of the invention discloses an optical lens, a camera module and electronic equipment, which can realize dual-band imaging of a visible light band and a near infrared band, have good camera performance and realize miniaturization design.

In order to achieve the above object, in a first aspect, the present invention discloses an optical lens including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged in order from an object side to an image side along an optical axis;

the first lens element with positive refractive power has a convex object-side surface at a paraxial region thereof and a convex image-side surface at a paraxial region thereof;

the second lens element with positive refractive power has a convex object-side surface at paraxial region;

the third lens element with refractive power has a concave image-side surface at paraxial region;

the fourth lens element with positive refractive power has a concave object-side surface at a paraxial region thereof and a convex image-side surface at a paraxial region thereof;

the fifth lens element with refractive power has a concave object-side surface at a paraxial region thereof and a convex image-side surface at a paraxial region thereof;

the sixth lens element with negative refractive power has a convex object-side surface at a paraxial region thereof and a concave image-side surface at a paraxial region thereof;

the optical lens satisfies the following relation:

Imgh^2/TTL/Fno>1.2mm；

wherein, TTL is a distance on the optical axis from the object side surface of the first lens element to the imaging surface of the optical lens, Imgh is a half of a diagonal length of an effective pixel area on the imaging surface of the optical lens, and Fno is an f-number of the optical lens.

The optical lens provided by the application comprises a first lens with positive refractive power and a second lens with positive refractive power, and is favorable for correcting the on-axis spherical aberration of the optical lens, a third lens with refractive power is favorable for correcting astigmatism of the optical lens, a fourth lens with positive refractive power is favorable for correcting curvature of field of the optical lens, and a fifth lens with refractive power and a sixth lens with negative refractive power are favorable for correcting coma aberration of the optical lens; simultaneously, the object side face and the image side face of the first lens are designed to be convex faces at the optical axis, so that the spherical aberration of the optical lens is balanced, the optical performance of the optical lens in a visible light wave band and an infrared wave band in a confocal state is better, the object side faces of the fourth lens and the fifth lens are concave faces at the optical axis, and the image side faces are convex faces, so that spherical coma aberration can be corrected, and the imaging resolution of two wave bands in the confocal state of the optical lens can be improved. Furthermore, the object side surface and the image side surface of the sixth lens are respectively a convex surface and a concave surface at the paraxial region, which is beneficial to correcting astigmatism and field curvature of the optical lens, and is beneficial to balancing defocusing amount of a focusing plane of the two-waveband optical lens, thereby realizing imaging of the two-waveband confocal plane of the optical lens.

Further, by making the optical lens satisfy the following relational expression: the image ^2/TTL/Fno >1.2mm can further acquire more scene contents on the basis of realizing two-waveband imaging and ultrathin miniaturization design of the optical lens, enriches the imaging information of the optical lens and has excellent shooting performance.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 1.4< TTL/f < 1.6; wherein f is the effective focal length of the optical lens.

When the relational expression is satisfied, the total length of the optical lens is favorably compressed, and the excessive angle of view of the optical lens is prevented, so that the optical lens can be balanced between the miniaturization design and the reduction of aberration brought by a large viewing place. When the optical length is less than the lower limit of the above relational expression, if the optical lens has a large field of view, the optical total length of the optical lens is excessively compressed, which causes a problem of increased sensitivity of the optical lens, and it is difficult to correct aberrations caused by a large field of view; if the total length of the optical lens is reduced, the angle of view of the optical lens is too small, and it is difficult to satisfy the large field of view characteristic. When the total length of the optical lens is longer than the upper limit of the above relation, the optical lens is not suitable for realizing the miniaturization design of the optical lens, and the light of the marginal field of view is difficult to image on the effective imaging area of the imaging surface, which causes the problem of incomplete imaging information.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 1.8< | R7+ R8|/| R7-R8| < 2.8; wherein R7 is a radius of curvature of an object-side surface of the fourth lens, and R8 is a radius of curvature of an image-side surface of the fourth lens.

When the relational expression is satisfied, the thickness ratio of the fourth lens can be effectively controlled, the sensitivity of the fourth lens can be favorably reduced, the high-level coma aberration of the optical lens can be balanced, and the imaging quality of the optical lens is improved.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 2.4< f2/f < 3.0; wherein f2 is the focal length of the second lens, and f is the effective focal length of the optical lens.

By controlling the ratio of the focal length of the second lens to the effective focal length of the optical lens within a certain range, the refractive power of the second lens is not too strong relative to the effective focal length of the optical lens, so that the high-grade spherical aberration can be corrected, and the optical lens has good imaging quality.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 0.4< | SAG51/CT5| < 0.8; SAG51 is the distance parallel to the optical axis from the maximum clear aperture of the object side surface of the fifth lens to the central point of the fifth lens, and CT5 is the thickness of the fifth lens on the optical axis.

The ratio is controlled in a certain range through the relational expression, so that the sensitivity of the fifth lens is favorably reduced, and the processing and forming of the fifth lens are favorably realized.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 0.2< D5/CT5< 1.0; wherein D5 is an air gap between the fifth lens element and the sixth lens element on the optical axis, and CT5 is the thickness of the fifth lens element on the optical axis.

By controlling the ratio of the air gap between the fifth lens and the sixth lens to the thickness of the fifth lens in a certain range, the high-level aberration generated by the optical lens can be effectively balanced, the field curvature adjustment of the optical lens during process manufacturing is facilitated, and the imaging quality of the optical lens is improved. If the above relation is exceeded, it is difficult to balance the high-order aberrations of the optical lens.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 1.6< MAX9/MIN9< 2; wherein, MAX9 is the maximum distance in the optical axis direction from the object side surface of the fifth lens to the image side surface of the fifth lens, and MIN9 is the minimum distance in the optical axis direction from the object side surface of the fifth lens to the image side surface of the fifth lens.

The ratio of the maximum distance to the minimum distance from the object side surface of the fifth lens to the image side surface of the fifth lens is reasonably controlled, so that the fifth lens is not excessively bent, the local astigmatism can be effectively reduced, the overall sensitivity of the optical lens can be reduced, and the forming and manufacturing of the fifth lens are facilitated.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 0.4< | R3/f2| < 0.8; wherein R3 is a radius of curvature of an object side surface of the second lens, and f2 is a focal length of the second lens.

By controlling the ratio of the curvature radius of the object side surface of the second lens and the focal length of the second lens within a certain range, the astigmatism of the second lens can be controlled within a reasonable range, and the astigmatism generated by the first lens can be effectively balanced, so that the optical lens has good imaging quality.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 100deg > FOV >90 deg; wherein the FOV is a maximum field angle of the optical lens. The optical lens satisfying the above relation can have a wide angle characteristic, so that the optical lens has a large image capturing range.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: fno < 2.1; when the optical lens meets the relational expression, the characteristic that the optical lens has a large aperture can be ensured, and the optical lens has enough light incoming quantity, so that the shot image is clearer, and the shooting of high-quality object space scenes with low brightness, such as night scenes, starry sky scenes and the like, is facilitated.

In a second aspect, the present invention discloses a camera module, which includes a photosensitive chip and the optical lens according to the first aspect, wherein the photosensitive chip is disposed on an image side of the optical lens. The camera module with the optical lens can enable the optical lens to realize the imaging of two visible light and near infrared wave bands on the same focal plane, so that the camera module can meet the design requirement of miniaturization, has excellent camera performance, can acquire more scene contents and enriches the imaging information of the optical lens.

In a third aspect, the invention further discloses an electronic device, which includes a housing and the camera module set according to the second aspect, and the camera module set is disposed on the housing. The electronic equipment with the camera module can enable the optical lens to realize light, thin and miniaturized design, enables the visible light and near infrared two wave bands to form images on the same focal plane, meets the miniaturized design requirement of the electronic equipment, has excellent camera performance, can acquire more scene contents, and enriches the imaging information of the electronic equipment.

Compared with the prior art, the invention has the beneficial effects that:

according to the optical lens, the camera module and the electronic device provided by the embodiment of the invention, the optical lens adopts six-piece lenses, and the refractive power and the surface shape of the six-piece lenses are designed, so that the optical lens meets the following relational expression: imgh 2/TTL/Fno >1.2mm, can make optical lens realize frivolous, miniaturized design simultaneously, optical lens can make two wave bands of visible light and near-infrared image at same focal plane to can acquire more scene content, richen optical lens's imaging information, possess good camera performance.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an optical lens disclosed in a first embodiment of the present application;

fig. 2 is a light ray spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%);

fig. 3 is a schematic structural diagram of an optical lens disclosed in the second embodiment of the present application;

fig. 4 is a light ray spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%);

fig. 5 is a schematic structural diagram of an optical lens disclosed in the third embodiment of the present application;

fig. 6 is a light ray spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%);

fig. 7 is a schematic structural diagram of an optical lens disclosed in a fourth embodiment of the present application;

fig. 8 is a light ray spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%);

fig. 9 is a schematic structural diagram of an optical lens disclosed in a fifth embodiment of the present application;

fig. 10 is a light ray spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%);

fig. 11 is a schematic structural diagram of an optical lens disclosed in a sixth embodiment of the present application;

fig. 12 is a ray spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%);

fig. 13 is a schematic structural diagram of the camera module disclosed in the present application;

fig. 14 is a schematic structural diagram of an electronic device disclosed in the present application.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The technical solution of the present invention will be further described with reference to the following embodiments and the accompanying drawings.

Referring to fig. 1, according to a first aspect of the present application, an optical lens 100 is disclosed, the optical lens 100 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6, which are disposed in order from an object side to an image side along an optical axis O. During imaging, light enters the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6 in sequence from the object side of the first lens L1, and is finally imaged on the imaging surface 101 of the optical lens 100. The first lens element L1 with positive refractive power, the second lens element L2 with positive refractive power, the third lens element L3 with positive refractive power (e.g., positive refractive power or negative refractive power), the fourth lens element L4 with positive refractive power, the fifth lens element L5 with refractive power (e.g., positive refractive power or negative refractive power), and the sixth lens element L6 with negative refractive power.

Further, the object-side surface S1 of the first lens element L1 may be convex at the paraxial region O, the image-side surface S2 of the first lens element L1 may be convex at the paraxial region O, the object-side surface S3 of the second lens element L2 may be convex at the paraxial region O, the image-side surface S4 of the second lens element L2 may be convex or concave at the paraxial region O, the object-side surface S5 of the third lens element L3 may be convex or concave at the paraxial region O, the image-side surface S6 of the third lens element L3 may be concave at the paraxial region O, the object-side surface S7 of the fourth lens element L4 may be concave at the paraxial region O, the image-side surface S8 of the fourth lens element L4 may be convex at the paraxial region O, the object-side surface S9 of the fifth lens element L5 may be concave at the paraxial region O, the image-side surface S10 of the fifth lens element L68628 may be convex at the paraxial region O, the sixth image-side surface S8653 may be convex at the paraxial region O, the paraxial region S828653 may be convex at the paraxial region O, and the sixth image-side surface S8656 may be concave at the paraxial region O.

As can be seen from the above description, the optical lens 100 includes the first lens element L1 with positive refractive power and the second lens element L2 with positive refractive power, which are favorable for correcting the on-axis spherical aberration of the optical lens 100, the third lens element L3 with positive refractive power is favorable for correcting the astigmatism of the optical lens 100, the fourth lens element L4 with positive refractive power is favorable for correcting the curvature of field of the optical lens 100, and the fifth lens element L5 with refractive power and the sixth lens element L6 with negative refractive power are favorable for correcting the coma aberration of the optical lens 100.

Further, the object-side surface S1 and the image-side surface S2 of the first lens element L1 are both convex surfaces at the optical axis O, which is beneficial to balancing the spherical aberration of the optical lens 100, so that the optical performance of the optical lens 100 in the confocal state in the visible light band and the infrared band is better, the object-side surfaces of the fourth lens element L4 and the fifth lens element L5 are both concave surfaces at the optical axis O, and the image-side surfaces are both convex surfaces, which is beneficial to correcting spherical coma, and improving the imaging resolution of the optical lens 100 in the confocal state in the dual bands. Further, the object-side surface S11 and the image-side surface S12 of the sixth lens element L6 are respectively convex and concave at the paraxial region O, which is favorable for correcting astigmatism and curvature of field of the optical lens 100, and simultaneously is favorable for balancing the defocus of the focal plane of the two-band optical lens 100, so as to realize two-band confocal plane imaging of the optical lens 100.

It is considered that the optical lens 100 is often used in electronic devices such as an in-vehicle device and a drive recorder or in an automobile. When the optical lens 100 is used as a camera of an automobile body, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6 can be made of plastic, so that the optical lens 100 has a good optical effect, and the overall weight of the optical lens 100 can be reduced. Meanwhile, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6 may all be aspheric.

In addition, it is understood that, in other embodiments, when the optical lens 100 is applicable to an electronic device such as a smart phone or a smart tablet, the material of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 may also be plastic or glass, and each lens may also be an aspheric surface or a spherical surface.

In some embodiments, the optical lens 100 further includes a stop 102, and the stop 102 may be an aperture stop or a field stop, which may be disposed between the image side S2 of the first lens L1 and the object side S3 of the second lens L2. It is understood that, in other embodiments, the stop 102 may also be disposed between the object side of the optical lens 100 and the object side surface S1 of the first lens L1, or the stop 102 may also be disposed between the second lens L2 and the third lens L3, which may be adjusted according to the actual situation, and this embodiment is not limited in this respect.

In some embodiments, the optical lens 100 further includes a filter L7, such as an infrared band pass filter, disposed between the image-side surface S12 of the sixth lens element L6 and the image plane 101 of the optical lens 100, so as to filter out light in a wavelength band other than visible light and near infrared short waves, and only allow infrared light and visible light to pass through.

In some embodiments, the optical lens 100 satisfies the following relationship: imgh ^2/TTL/Fno >1.2 mm; wherein, TTL is a distance from the object-side surface S1 of the first lens element L1 to the image plane 101 of the optical lens 100 on the optical axis O, and "Imgh" is a half of a diagonal length of an effective pixel area on the image plane 101 of the optical lens 100, and Fno is an f-number of the optical lens 100. When the above relational expression is satisfied, the optical lens 100 can realize a light, thin and miniaturized design, and simultaneously can image in the same focal plane in two wavelength bands of visible light and near infrared, and can acquire more scene contents, enrich imaging information of the optical lens 100, and have excellent shooting performance.

In some embodiments, the optical lens 100 satisfies the following relationship: fno < 2.1; when the optical lens 100 satisfies the above relation, the optical lens 100 can have a large aperture characteristic, so that the optical lens 100 has a sufficient light incident amount, and thus the captured image is clearer, which is beneficial to capturing high-quality object space scenes with low brightness, such as night scenes and starry sky.

In some embodiments, the optical lens 100 satisfies the following relationship: 1.4< TTL/f < 1.6; where f is the effective focal length of the optical lens 100. Satisfying the above-described relational expression is advantageous in reducing the total length of the optical lens 100 and preventing an excessively large angle of view of the optical lens 100, so that the optical lens 100 can be designed in a compact size and reduce aberrations in a large field of view. When the value is lower than the lower limit of the above relation, if the optical lens 100 has a large field of view, the optical length of the optical lens 100 is excessively compressed, which causes a problem that the sensitivity of the optical lens 100 is increased, and it is difficult to correct the aberration caused by the large field of view; if the total length of the optical lens 100 is reduced, the angle of view of the optical lens 100 becomes too small, and it becomes difficult to satisfy the large field of view characteristic. When the total length of the optical lens 100 is longer than the upper limit of the above relation, it is not favorable to achieve a miniaturized design, and the light of the marginal field of view is difficult to image on the effective imaging area of the imaging surface, resulting in a problem of incomplete imaging information.

In some embodiments, the optical lens 100 satisfies the following relationship: 1.8< | R7+ R8|/| R7-R8| < 2.8; where R7 is a radius of curvature of the object-side surface S7 of the fourth lens L4, and R8 is a radius of curvature of the image-side surface S8 of the fourth lens L4. When the above relational expression is satisfied, the thickness ratio of the fourth lens L4 can be effectively controlled, which is beneficial to reducing the sensitivity of the fourth lens L4, and the high-level coma aberration of the optical lens 100 can be balanced, thereby improving the imaging quality of the optical lens 100.

In some embodiments, the optical lens 100 satisfies the following relationship: 2.4< f2/f < 3.0; wherein f2 is the focal length of the second lens L2, and f is the effective focal length of the optical lens.

By controlling the ratio of the focal length of the second lens element L2 to the effective focal length of the optical lens element within a certain range, the refractive power of the second lens element L2 is not too strong relative to the effective focal length of the optical lens element, so that the high-order spherical aberration can be corrected, and the optical lens element has good imaging quality.

In some embodiments, the optical lens 100 satisfies the following relationship: 0.4< | R3/f2| < 0.8; wherein R3 is the radius of curvature of the object-side surface S3 of the second lens L2, and f2 is the focal length of the second lens L2.

By controlling the ratio between the curvature radius of the object-side surface S2 of the second lens L2 and the focal length of the second lens L2 to be in a certain range, the astigmatism of the second lens L2 can be controlled to be in a reasonable range, and the astigmatism generated by the first lens L1 can be effectively balanced, so that the optical lens has good imaging quality.

In some embodiments, the optical lens 100 satisfies the following relationship: 0.4< | SAG51/CT5| < 0.8; SAG51 is the distance parallel to the optical axis O from the maximum clear aperture of the object-side surface S9 of the fifth lens L5 to the center point of the fifth lens L5, and CT5 is the thickness of the fifth lens L5 on the optical axis.

The ratio is controlled in a certain range through the relational expression, so that the sensitivity of the fifth lens L5 is favorably reduced, and the processing and forming of the fifth lens L5 are favorably realized.

In some embodiments, the optical lens 100 satisfies the following relationship: 0.2< D5/CT5< 1.0; wherein D5 is an air gap between the fifth lens element L5 and the sixth lens element L6 on the optical axis, and CT5 is the thickness of the fifth lens element L5 on the optical axis.

By controlling the ratio of the air gap between the fifth lens and the sixth lens to the thickness of the fifth lens L5 within a certain range, the high-level aberration generated by the optical lens can be effectively balanced, the field curvature adjustment of the optical lens during the process manufacturing is facilitated, and the imaging quality of the optical lens is improved. If the above relation is exceeded, it is difficult to balance the high-order aberrations of the optical lens 100.

In some embodiments, the optical lens 1 satisfies the following relation: 1.6< MAX9/MIN9< 2; the MAX9 is the maximum distance between the object-side surface S9 of the fifth lens element L5 and the image-side surface S10 of the fifth lens element L5 in the direction of the optical axis O, and the MIN9 is the minimum distance between the object-side surface S9 of the fifth lens element L5 and the image-side surface S10 of the fifth lens element L5 in the direction of the optical axis O.

By reasonably controlling the ratio of the maximum distance to the minimum distance from the object side surface S9 of the fifth lens element L5 to the image side surface S10 of the fifth lens element L5, the fifth lens element L5 is not excessively bent, so that the local astigmatism can be effectively reduced, the overall sensitivity of the optical lens can be reduced, and the molding and manufacturing of the fifth lens element L5 are facilitated.

In some embodiments, the optical lens 100 satisfies the following relationship: 100deg > FOV >90 deg; wherein, the FOV is the maximum field angle of the optical lens.

The optical lens satisfying the above relation can have a wide-angle characteristic, so that the optical lens has a large image capturing range, and the front end of the optical lens structure is miniaturized.

The optical lens 100 of the present embodiment will be described in detail with reference to specific parameters.

First embodiment

A schematic structural diagram of an optical lens 100 disclosed in the first embodiment of the present application is shown in fig. 1, where the optical lens 100 includes a first lens L1, a second lens L2, a stop 102, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a filter L7, which are disposed in order from an object side to an image side along an optical axis O.

Further, the first lens element L1 has positive refractive power, the second lens element L2 has positive refractive power, the third lens element L3 has negative refractive power, the fourth lens element L4 has positive refractive power, the fifth lens element L5 has positive refractive power, and the sixth lens element L6 has negative refractive power.

Furthermore, the object-side surface S1 and the image-side surface S2 of the first lens element L1 are convex at the paraxial region O; the object-side surface S1 and the image-side surface S2 of the first lens element L1 are convex and concave, respectively, at the circumference. The object-side surface S3 and the image-side surface S4 of the second lens element L2 are convex at the paraxial region O; the object-side surface S3 and the image-side surface S4 of the second lens element L2 are convex at their circumferences. The object-side surface S5 and the image-side surface S6 of the third lens element L3 are convex and concave, respectively, at a paraxial region O; the object-side surface S5 and the image-side surface S6 of the third lens L3 are concave and convex, respectively, at the circumference. The object-side surface S7 and the image-side surface S8 of the fourth lens element L4 are concave and convex, respectively, at a paraxial region O; the object-side surface S7 and the image-side surface S8 of the four-lens L4 are concave and convex, respectively, at the circumference. The object-side surface S9 and the image-side surface S10 of the fifth lens element L5 are concave and convex, respectively, at a paraxial region O; the object-side surface S9 and the image-side surface S10 of the fifth lens L5 are concave and convex, respectively, at the circumference. The object-side surface S11 and the image-side surface S12 of the sixth lens element L6 are convex and concave, respectively, at a paraxial region O; the object-side surface S11 and the image-side surface S12 of the sixth lens element L6 are concave and convex, respectively, at the circumference.

Specifically, other parameters of the optical lens 100 are given in table 1 below, taking as an example that the effective focal length f of the optical lens 100 is 3.366mm, the field angle FOV of the optical lens 100 is 96deg, the total optical length TTL of the optical lens 100 is 5.14mm, and the aperture size FNO is 2.09. The elements of the optical lens 100 from the object side to the image side along the optical axis O are arranged in the order of the elements from top to bottom in table 1. In the same lens, the surface with the smaller number of surfaces is the object side surface of the lens, and the surface with the larger number of surfaces is the image side surface of the lens, and for example, the

numbers

2 and 3 correspond to the object side surface S1 and the image side surface S2 of the first lens L1, respectively. The Y radius in table 1 is the radius of curvature of the object-side or image-side surface of the respective surface number at the paraxial region O. The first value in the "thickness" parameter list of a lens is the thickness of the lens on the optical axis O, and the second value is the distance from the image-side surface to the back surface of the lens on the optical axis O. The numerical value of the stop 102 in the "thickness" parameter column is the distance on the optical axis O from the stop 102 to the vertex of the next surface (the vertex refers to the intersection point of the surface and the optical axis O), the direction from the object side to the image side of the last lens of the first lens L1 is the positive direction of the optical axis O, when the value is negative, it indicates that the stop 102 is disposed on the right side of the vertex of the next surface, and if the thickness of the stop 102 is a positive value, the stop 102 is disposed on the left side of the vertex of the next surface. It is understood that the units of the radius Y, thickness, and focal length in table 1 are all mm. The reference wavelength of the refractive index and Abbe number of each lens in Table 1 is 587.6nm, and the reference wavelength of the effective focal length is 555 nm.

TABLE 1

In the first embodiment, the object-side surface and the image-side surface of any one of the first lens L1 through the sixth lens L6 are aspheric, and the surface shape x of each aspheric lens can be defined by, but is not limited to, the following aspheric formula:

wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c being 1/R (i.e., paraxial curvature c is the inverse of radius R of Y in table 1 above); k is the cone coefficient; ai is a correction coefficient corresponding to the high-order term of the ith aspheric term. Table 2 shows the high-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for the respective aspherical mirror surfaces S1-S16 in the first embodiment.

TABLE 2

Referring to fig. 2 (a), fig. 2 (a) shows a light spherical aberration curve diagram of the optical lens 100 in the first embodiment at wavelengths of 435nm, 470nm, 510nm, 555nm, 610nm, 650nm, 850nm, 940nm and 1000nm, which realizes confocal imaging in the visible light band (435-. In fig. 2 (a), the abscissa in the X-axis direction represents the focus shift, and the ordinate in the Y-axis direction represents the normalized field of view. As can be seen from (a) in fig. 2, the spherical aberration of the optical lens 100 in the first embodiment is effectively controlled, which shows that the imaging quality of the optical lens 100 in the present embodiment is better.

Referring to fig. 2 (B), fig. 2 (B) is a diagram of astigmatism of light of the optical lens 100 in the first embodiment at a wavelength of 555 nm. Wherein the abscissa along the X-axis direction represents the focus offset and the ordinate along the Y-axis direction represents the image height in mm. The astigmatism curves represent the meridional image plane curvature T and the sagittal image plane curvature S, and it can be seen from (B) in fig. 2 that the astigmatism of the optical lens 100 is well compensated at this wavelength.

Referring to fig. 2 (C), fig. 2 (C) is a distortion curve diagram of the optical lens 100 in the first embodiment at a wavelength of 555 nm. Wherein the abscissa along the X-axis direction represents distortion and the ordinate along the Y-axis direction represents image height in mm. As can be seen from (C) in fig. 2, the distortion of the optical lens 100 is well corrected at a wavelength of 555 nm.

Second embodiment

Referring to fig. 3, fig. 3 is a schematic structural diagram of an optical lens 100 according to a second embodiment of the present application. The optical lens 100 includes a first lens L1, a second lens L2, a stop 102, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a filter L7, which are disposed in this order from the object side to the image side along the optical axis O.

Further, in the second embodiment, the refractive power of each lens element is different from that of each lens element in the first embodiment in that: the fifth lens element L5 has negative refractive power. Meanwhile, in the second embodiment, the face shape of each lens coincides with the face shape of each lens in the first embodiment.

In the second embodiment, the effective focal length f of the optical lens 100 is 3.4mm, the FOV of the field angle of the optical lens 100 is 95.4deg, the total optical length TTL of the optical lens 100 is 5.25mm, and the aperture size FNO is 2.08.

Other parameters in the second embodiment are given in the following table 3, and the definitions of the parameters can be obtained from the description of the foregoing embodiments, which are not repeated herein. It is understood that the units of the radius Y, thickness, and focal length in table 3 are all mm. The reference wavelength of the refractive index and Abbe number of each lens in Table 3 was 587.6nm, and the reference wavelength of the effective focal length was 555 nm.

TABLE 3

In the second embodiment, table 4 gives the high-order term coefficients that can be used for each aspherical mirror surface in the second embodiment, wherein each aspherical mirror surface type can be defined by the formula given in the first embodiment.

TABLE 4

Further, please refer to fig. 4 (a), which shows a light spherical aberration curve diagram of the optical lens 100 in the second embodiment at wavelengths of 435nm, 470nm, 510nm, 555nm, 610nm, 650nm, 850nm, 940nm and 1000nm, so as to achieve confocal imaging in the visible light band (435-. In fig. 4 (a), the abscissa in the X-axis direction represents the focus shift, and the ordinate in the Y-axis direction represents the normalized field of view. As can be seen from (a) in fig. 4, the spherical aberration of the optical lens 100 in the second embodiment is effectively controlled, which shows that the imaging quality of the optical lens 100 in this embodiment is better.

Referring to fig. 4 (B), fig. 4 (B) is a diagram of astigmatism of light of the optical lens 100 in the second embodiment at a wavelength of 555 nm. Wherein the abscissa along the X-axis direction represents the focus offset and the ordinate along the Y-axis direction represents the image height in mm. The astigmatism curves represent the meridional image plane curvature T and the sagittal image plane curvature S, and as can be seen from (B) in fig. 4, astigmatism of the optical lens 100 is well compensated.

Referring to fig. 4 (C), fig. 4 (C) is a distortion curve diagram of the optical lens 100 in the second embodiment at a wavelength of 555 nm. Wherein the abscissa along the X-axis direction represents distortion and the ordinate along the Y-axis direction represents image height in mm. As can be seen from (C) in fig. 4, the distortion of the optical lens 100 is well corrected at a wavelength of 555 nm.

Third embodiment

Referring to fig. 5, fig. 5 is a schematic structural diagram of an optical lens 100 according to a third embodiment of the present application. The optical lens 100 includes a first lens L1, a second lens L2, a stop 102, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a filter L7, which are disposed in this order from the object side to the image side along the optical axis O.

Further, in the third embodiment, the refractive power of each lens element is different from that of each lens element in the first embodiment in that: the fifth lens element L5 has negative refractive power. Meanwhile, in the third embodiment, the surface shape of each lens is different from that of each lens in the first embodiment in that: the image-side surface S4 of the second lens element L2 is concave at the paraxial region O.

In the third embodiment, the effective focal length f of the optical lens 100 is 3.44mm, the FOV of the field angle of the optical lens 100 is 94.6deg, the total optical length TTL of the optical lens 100 is 5.25mm, and the aperture size FNO is 2.01, for example.

Other parameters in the third embodiment are shown in the following table 5, and the definitions of the parameters can be obtained from the foregoing description, which is not repeated herein. It is understood that the units of the radius Y, thickness, and focal length in table 5 are mm. The reference wavelength of the refractive index and abbe number of each lens in table 5 was 587.6nm, and the reference wavelength of the effective focal length was 555 nm.

TABLE 5

In the third embodiment, table 6 gives the high-order term coefficients that can be used for each aspherical mirror surface in the third embodiment, wherein each aspherical mirror surface type can be defined by the formula given in the first embodiment.

TABLE 6

Further, please refer to fig. 6 (a), which shows a spherical aberration curve diagram of the optical lens 100 in the third embodiment at wavelengths of 435nm, 470nm, 510nm, 555nm, 610nm, 650nm, 850nm, 940nm and 1000nm, so as to achieve confocal imaging in the visible light band (435-. In fig. 6 (a), the abscissa in the X-axis direction represents the focus shift, and the ordinate in the Y-axis direction represents the normalized field of view. As can be seen from (a) in fig. 6, the spherical aberration of the optical lens 100 in the third embodiment is effectively controlled, which shows that the imaging quality of the optical lens 100 in this embodiment is better.

Referring to fig. 6 (B), fig. 6 (B) is a diagram of astigmatism of light of the optical lens 100 in the third embodiment at a wavelength of 555 nm. Wherein the abscissa along the X-axis direction represents the focus offset and the ordinate along the Y-axis direction represents the image height in mm. The astigmatism curves represent the meridional image plane curvature T and the sagittal image plane curvature S, and it can be seen from (B) in fig. 6 that the astigmatism of the optical lens 100 is well compensated.

Referring to fig. 6 (C), fig. 6 (C) is a distortion curve diagram of the optical lens 100 in the third embodiment at a wavelength of 555 nm. Wherein the abscissa along the X-axis direction represents distortion and the ordinate along the Y-axis direction represents image height in mm. As can be seen from (C) in fig. 6, the distortion of the optical lens 100 is well corrected at a wavelength of 555 nm.

Fourth embodiment

Fig. 7 is a schematic structural diagram of an optical lens 100 according to a fourth embodiment of the present disclosure. The optical lens 100 includes a first lens L1, a second lens L2, a stop 102, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a filter L7, which are disposed in this order from the object side to the image side along the optical axis O.

Further, in the fourth embodiment, the refractive power of each lens element is the same as that of each lens element in the first embodiment. In the fourth embodiment, the surface shape of each lens differs from that of the first embodiment in that: the object-side surface S5 of the third lens element L3 is concave at the paraxial region O.

In the fourth embodiment, the focal length f of the optical lens 100 is 3.5mm, the FOV of the field angle of the optical lens 100 is 93.5deg, the total optical length TTL of the optical lens 100 is 5.38mm, and the aperture size FNO is 1.99, for example.

Other parameters in the fourth embodiment are shown in the following table 7, and the definitions of the parameters can be obtained from the foregoing description, which is not repeated herein. It is understood that the units of the radius Y, thickness, and focal length in table 7 are mm. In table 7, the reference wavelength of the refractive index and abbe number of each lens is 587.6nm, and the reference wavelength of the effective focal length is 555 nm.

TABLE 7

In the fourth embodiment, table 8 gives the high-order term coefficients that can be used for each aspherical mirror surface in the fourth embodiment, wherein each aspherical mirror surface type can be defined by the formula given in the first embodiment.

TABLE 8

Further, please refer to fig. 8 (a), which shows a light spherical aberration curve diagram of the optical lens 100 in the fourth embodiment at wavelengths of 435nm, 470nm, 510nm, 555nm, 610nm, 650nm, 850nm, 940nm and 1000nm, so as to realize confocal imaging in the visible light band (435-. In fig. 8 (a), the abscissa in the X-axis direction represents the focus shift, and the ordinate in the Y-axis direction represents the normalized field of view. As can be seen from (a) in fig. 8, the spherical aberration of the optical lens 100 in the fourth embodiment is effectively controlled, which shows that the imaging quality of the optical lens 100 in the present embodiment is better.

Referring to fig. 8 (B), fig. 8 (B) is a diagram of astigmatism of light of the optical lens 100 in the fourth embodiment at a wavelength of 555 nm. Wherein the abscissa along the X-axis direction represents the focus offset and the ordinate along the Y-axis direction represents the image height in mm. The astigmatism curves represent the meridional image plane curvature T and the sagittal image plane curvature S, and it can be seen from (B) in fig. 8 that the astigmatism of the optical lens 100 is well compensated.

Referring to fig. 8 (C), fig. 8 (C) is a distortion curve diagram of the optical lens 100 in the fourth embodiment at a wavelength of 555 nm. Wherein the abscissa along the X-axis direction represents distortion and the ordinate along the Y-axis direction represents image height in mm. As can be seen from (C) in fig. 8, the distortion of the optical lens 100 is well corrected at a wavelength of 555 nm.

Fifth embodiment

Fig. 9 is a schematic structural diagram of an optical lens 100 according to a fifth embodiment of the present application. The optical lens 100 includes a first lens L1, a second lens L2, a stop 102, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a filter L7, which are disposed in this order from the object side to the image side along the optical axis O.

Further, in the fifth embodiment, the refractive power of each lens element differs from that of each lens element in the first embodiment in that: the third lens element L3 has positive refractive power. Meanwhile, in the fifth embodiment, the surface shape of each lens is different from that of each lens in the first embodiment in that: the image-side surface S4 of the second lens element L2 is concave at the paraxial region O.

In the fifth embodiment, the focal length f of the optical lens 100 is 3.43mm, the FOV of the field angle of the optical lens 100 is 94.7deg, the total optical length TTL of the optical lens 100 is 5.2mm, and the aperture size FNO is 2.09.

The other parameters in the fifth embodiment are shown in the following table 9, and the definitions of the parameters can be obtained from the foregoing description, which is not repeated herein. It is understood that the units of the radius Y, thickness, and focal length in table 9 are mm. In Table 9, the reference wavelength of the refractive index and Abbe number of each lens is 587.6nm, and the reference wavelength of the effective focal length is 555 nm.

TABLE 9

In the fifth embodiment, table 10 gives the high-order term coefficients that can be used for each aspherical mirror surface in the fifth embodiment, wherein each aspherical mirror surface type can be defined by the formula given in the first embodiment.

Watch 10

Further, please refer to (a) in fig. 10, which shows a light spherical aberration curve diagram of the optical lens 100 in the fifth embodiment at wavelengths of 435nm, 470nm, 510nm, 555nm, 610nm, 650nm, 850nm, 940nm and 1000nm, so as to achieve confocal imaging in the visible light band (435-. In fig. 10 (a), the abscissa in the X-axis direction represents the focus shift, and the ordinate in the Y-axis direction represents the normalized field of view. As can be seen from (a) in fig. 10, the spherical aberration of the optical lens 100 in the fifth embodiment is effectively controlled, which shows that the imaging quality of the optical lens 100 in the present embodiment is better.

Referring to fig. 10 (B), fig. 10 (B) is a diagram of astigmatism of light of the optical lens 100 in the fifth embodiment at a wavelength of 555 nm. Wherein the abscissa along the X-axis direction represents the focus offset and the ordinate along the Y-axis direction represents the image height in mm. The astigmatism curves represent the meridional image plane curvature T and the sagittal image plane curvature S, and it can be seen from (B) in fig. 10 that the astigmatism of the optical lens 100 is well compensated.

Referring to fig. 10 (C), fig. 10 (C) is a distortion curve diagram of the optical lens 100 in the fifth embodiment at a wavelength of 555 nm. Wherein the abscissa along the X-axis direction represents distortion and the ordinate along the Y-axis direction represents image height in mm. As can be seen from (C) in fig. 10, the distortion of the optical lens 100 is well corrected at a wavelength of 555 nm.

Sixth embodiment

Fig. 11 is a schematic structural diagram of an optical lens 100 according to a sixth embodiment of the present application. The optical lens 100 includes a first lens L1, a second lens L2, a stop 102, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a filter L7, which are disposed in this order from the object side to the image side along the optical axis O.

Further, in the sixth embodiment, the refractive power of each lens element differs from that of each lens element in the first embodiment in that: the fifth lens element L5 has negative refractive power. Meanwhile, in the sixth embodiment, the surface shape of each lens is different from that in the first embodiment in that: the object-side surface S11 of the sixth lens element L6 is convex at the circumference.

In the sixth embodiment, the focal length f of the optical lens 100 is 3.5mm, the FOV of the field angle of the optical lens 100 is 93.8deg, the total optical length TTL of the optical lens 100 is 5.4mm, and the aperture size FNO is 1.96.

Other parameters in the sixth embodiment are given in the following table 11, and the definitions of the parameters can be obtained from the foregoing description, which is not repeated herein. It is understood that the units of the radius Y, thickness, and focal length in table 11 are mm. The reference wavelength of refractive index and Abbe number of each lens in Table 11 was 587.6nm, and the reference wavelength of effective focal length was 555 nm.

TABLE 11

In the sixth embodiment, table 12 gives the high-order term coefficients that can be used for each aspherical mirror surface in the sixth embodiment, wherein each aspherical mirror surface type can be defined by the formula given in the first embodiment.

TABLE 12

Further, please refer to (a) in fig. 12, which shows a light spherical aberration curve diagram of the optical lens 100 in the sixth embodiment at wavelengths of 435nm, 470nm, 510nm, 555nm, 610nm, 650nm, 850nm, 940nm and 1000nm, so as to achieve confocal imaging in the visible light band (435-. In fig. 12 (a), the abscissa in the X-axis direction represents the focus shift, and the ordinate in the Y-axis direction represents the normalized field of view. As can be seen from (a) in fig. 10, the spherical aberration of the optical lens 100 in the sixth embodiment is effectively controlled, which shows that the imaging quality of the optical lens 100 in this embodiment is better.

Referring to fig. 12 (B), fig. 10 (B) is a diagram of astigmatism of light of the optical lens 100 in the sixth embodiment at a wavelength of 555 nm. Wherein the abscissa along the X-axis direction represents the focus offset and the ordinate along the Y-axis direction represents the image height in mm. The astigmatism curves represent the meridional image plane curvature T and the sagittal image plane curvature S, and it can be seen from (B) in fig. 12 that the astigmatism of the optical lens 100 is well compensated.

Referring to fig. 12 (C), fig. 10 (C) is a distortion curve diagram of the optical lens 100 in the sixth embodiment at a wavelength of 555 nm. Wherein the abscissa along the X-axis direction represents distortion and the ordinate along the Y-axis direction represents image height in mm. As can be seen from (C) in fig. 12, the distortion of the optical lens 100 is well corrected at a wavelength of 555 nm.

Referring to table 13, table 13 summarizes ratios of the relations in the first embodiment to the sixth embodiment of the present application.

Watch 13

Referring to fig. 13, the present application further discloses a camera module 200, in which the camera module 200 includes a photo sensor 201 and the optical lens 100100, and the photo sensor 201 is disposed at an image side of the optical lens 100. The camera module with the optical lens 100 can enable the optical lens 100 to realize imaging of two visible light and near infrared wave bands on the same focal plane, so that the camera module 200 can meet the design requirement of miniaturization, has excellent camera performance, can acquire more scene contents, and enriches the imaging information of the optical lens 100.

Referring to fig. 14, the present application further discloses an electronic device 300, wherein the electronic device 300 includes a housing and the camera module 200, and the camera module 200 is disposed on the housing 301. Electronic equipment with module 200 makes a video recording can make optical lens 100 realize frivolous, miniaturized design in for two wave bands of visible light and near-infrared make this electronic equipment realize miniaturized design demand when same focal plane formation of image, and possess good camera performance, can acquire more scene content, richen electronic equipment's imaging information.

The optical lens, the camera module and the electronic device disclosed in the embodiments of the present invention are described in detail above, and the principle and the embodiments of the present invention are explained in detail herein by applying specific examples, and the description of the embodiments above is only used to help understanding the optical lens, the camera module and the electronic device and the core ideas thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. An optical lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, which are arranged in order from an object side to an image side along an optical axis;

the optical lens satisfies the following relation:

Imgh^2/TTL/Fno>1.2mm；

wherein TTL is a distance from an object-side surface of the first lens element to an image plane of the optical lens on the optical axis, Imgh is a radius of a maximum effective image circle of the optical lens, and Fno is an f-number of the optical lens.

2. An optical lens according to claim 1, wherein the optical lens satisfies the following relation:

1.4<TTL/f<1.6；

wherein f is the effective focal length of the optical lens.

3. An optical lens according to claim 1, wherein the optical lens satisfies the following relation:

1.8<|R7+R8|/|R7-R8|<2.8；

wherein R7 is a radius of curvature of an object-side surface of the fourth lens element at an optical axis, and R8 is a radius of curvature of an image-side surface of the fourth lens element at the optical axis.

4. An optical lens according to claim 1, wherein the optical lens satisfies the following relation:

2.4<f2/f<3.0；

wherein f2 is the focal length of the second lens, and f is the effective focal length of the optical lens.

5. An optical lens according to claim 1, wherein the optical lens satisfies the following relation:

0.4<|R3/f2|<0.8；

wherein R3 is a radius of curvature of an object-side surface of the second lens at an optical axis, and f2 is a focal length of the second lens.

6. An optical lens according to claim 1, wherein the optical lens satisfies the following relation:

0.4<|SAG51/CT5|<0.8；

SAG51 is the distance parallel to the optical axis from the maximum clear aperture of the object side surface of the fifth lens to the central point of the fifth lens, and CT5 is the thickness of the fifth lens on the optical axis.

7. An optical lens according to claim 1, wherein the optical lens satisfies the following relation:

0.2<D5/CT5<1.0；

wherein D5 is an air gap between the fifth lens element and the sixth lens element on the optical axis, and CT5 is a thickness of the fifth lens element on the optical axis.

8. An optical lens according to claim 1, wherein the optical lens satisfies the following relation:

1.6<MAX9/MIN9<2；

wherein, MAX9 is the maximum distance in the optical axis direction from the object side surface of the fifth lens to the image side surface of the fifth lens, and MIN9 is the minimum distance in the optical axis direction from the object side surface of the fifth lens to the image side surface of the fifth lens.

9. A camera module, comprising a photo sensor chip and the optical lens of any one of claims 1-8, wherein the photo sensor chip is disposed on an image side of the optical lens.

10. An electronic device, comprising a housing and the camera module of claim 9, wherein the camera module is disposed in the housing.