CN114660765A

CN114660765A - Optical lens and electronic device

Info

Publication number: CN114660765A
Application number: CN202011538164.1A
Authority: CN
Inventors: 王东方; 邱光; 姚波
Original assignee: Ningbo Sunny Automotive Optech Co Ltd
Current assignee: Ningbo Sunny Automotive Optech Co Ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2022-06-24

Abstract

The application discloses an optical lens and an electronic device including the same. The optical lens sequentially comprises from an object side to an image side along an optical axis: the first lens with negative focal power has a convex object-side surface and a concave image-side surface; a second lens having a positive refractive power, the object-side surface of which is concave and the image-side surface of which is convex; a third lens with positive focal power, wherein the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface; a fourth lens having an optical power; and a fifth lens having a power.

Description

Optical lens and electronic device

Technical Field

The present disclosure relates to the field of optical elements, and more particularly, to an optical lens and an electronic device.

Background

In recent years, with the popularization of automobiles and the improvement of living standard of people, the automobiles obviously become a main tool for people to go out daily. Meanwhile, the phenomenon of fatigue driving is more and more serious, and the influence of the fatigue driving of a driver on the safety of a road is more and more large. Therefore, how to reduce the influence of fatigue driving on road safety is one of the main issues of common concern for automobile manufacturers and users at present.

In order to solve the problems, automobile manufacturers adopt an internal view monitoring lens mounted on an automobile to effectively identify the facial state of a driver, and then remind the driver of safe driving. However, in order to improve the imaging quality of the inward-looking monitoring lens in the current market, the number of lenses is often increased, which not only increases the cost, but also increases the corresponding chip size, and further increases the total length of the lens to a certain extent, thereby affecting the development trend of lens miniaturization.

Disclosure of Invention

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

In one embodiment, the fourth lens has positive optical power, and the object-side surface of the fourth lens is convex and the image-side surface of the fourth lens is concave.

In one embodiment, the fourth lens element has a negative power and has a convex object-side surface and a concave image-side surface.

In one embodiment, the fourth lens element has a negative power and has a concave object-side surface and a convex image-side surface.

In one embodiment, the fourth lens has a negative power and has a concave object-side surface and a concave image-side surface.

In one embodiment, the fifth lens element has a negative power and has a convex object-side surface and a concave image-side surface.

In one embodiment, the fifth lens element has positive optical power, and the object side surface of the fifth lens element is convex and the image side surface of the fifth lens element is concave.

In one embodiment, the fifth lens element has positive optical power, and the object side surface of the fifth lens element is concave and the image side surface of the fifth lens element is convex.

In one embodiment, a distance TTL between a center of an object side surface of the first lens element and an imaging surface of the optical lens on an optical axis and a total effective focal length F of the optical lens may satisfy: TTL/F is less than or equal to 5.

In one embodiment, the maximum field angle FOV of the optical lens, the maximum clear aperture D of the object-side surface of the first lens corresponding to the maximum field angle of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens may satisfy: D/H/FOV is less than or equal to 0.15.

In one embodiment, a distance BFL between a center of an image-side surface of the fifth lens and an image plane of the optical lens on the optical axis and a distance TL between a center of an object-side surface of the first lens and a center of an image-side surface of the fifth lens on the optical axis may satisfy: BFL/TL is more than or equal to 0.1.

In one embodiment, the maximum field angle FOV of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens may satisfy: (FOV F)/H.gtoreq.40.

In one embodiment, the effective focal length F1 of the first lens and the effective focal length F2 of the second lens may satisfy: the ratio of F1 to F2 is less than or equal to 0.5.

In one embodiment, the effective focal length F3 of the third lens and the effective focal length F4 of the fourth lens may satisfy: i F3/F4 is less than or equal to 1.

In one embodiment, the total effective focal length F of the optical lens and the radius of curvature R11 of the object side surface of the first lens can satisfy: the | F/R11| is less than or equal to 1.

In one embodiment, the radius of curvature R12 of the image-side surface of the first lens and the radius of curvature R21 of the object-side surface of the second lens may satisfy: R12/R21 is not less than-0.7.

In one embodiment, the radius of curvature R31 of the object-side surface of the third lens and the radius of curvature R32 of the image-side surface of the third lens may satisfy: the ratio of R31 to R32 is less than or equal to 2.

In one embodiment, the image height H corresponding to the maximum field angle of the optical lens, the total effective focal length F of the optical lens, and the maximum field angle θ of the optical lens in radians may satisfy: (H-Fxtheta)/(Fxtheta) is less than or equal to 0.4.

In one embodiment, the radius of curvature R11 of the object-side surface of the first lens and the radius of curvature R12 of the image-side surface of the first lens may satisfy: R11/R12 is more than or equal to 0.5 and less than or equal to 6.

In one embodiment, the F-number FNO of the optical lens and the total effective focal length F of the optical lens may satisfy: FNO/F is less than or equal to 1.

In one embodiment, a half aperture D12 of a maximum clear aperture of an image-side surface of the first lens corresponding to a maximum field angle of the optical lens and a sago 12 at the maximum clear aperture of the image-side surface of the first lens may satisfy: and | arctan (SAG12/D12) | is less than or equal to 20 and less than or equal to 45.

In one embodiment, a center thickness dn of an nth lens having a largest center thickness among the first, second, fourth, and fifth lenses and a center thickness dm of an mth lens having a smallest center thickness among the first, second, fourth, and fifth lenses may satisfy: dn/dm is less than or equal to 3, wherein n and m are selected from 1, 2, 4 and 5.

In one embodiment, the maximum field angle θ of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens in units of radians may satisfy: f multiplied by tan (theta/2)/(H/2) is less than or equal to 2.2.

In one embodiment, a separation distance d12 between the first lens and the second lens on the optical axis and a distance TTL between the center of the object side surface of the first lens and the imaging surface of the optical lens on the optical axis may satisfy: d12/TTL is less than or equal to 0.2.

In one embodiment, the radius of curvature R21 of the object-side surface of the second lens and the radius of curvature R22 of the image-side surface of the second lens may satisfy: -0.5 (R21-R22)/(R21+ R22) or less.

In one embodiment, the effective focal length F5 of the fifth lens and the total effective focal length F of the optical lens may satisfy: and | F5/F | ≧ 3.

In one embodiment, the effective focal length F3 of the third lens and the effective focal length F5 of the fifth lens may satisfy: F3/F5 is less than or equal to 1.

Another aspect of the present application provides an optical lens. The optical lens sequentially comprises from an object side to an image side along an optical axis: a first lens having a negative optical power; a second lens having a positive optical power; a third lens having positive optical power; a fourth lens having an optical power; and a fifth lens having optical power. The maximum field angle FOV of the optical lens, the total effective focal length F of the optical lens and the image height H corresponding to the maximum field angle of the optical lens can satisfy the following conditions: (FOV F)/H.gtoreq.40.

In one embodiment, the first lens element has a convex object-side surface and a concave image-side surface.

In one embodiment, the second lens element has a concave object-side surface and a convex image-side surface.

In one embodiment, the third lens element has a convex object-side surface and a convex image-side surface.

In one embodiment, the fourth lens element has positive optical power, and has a convex object-side surface and a concave image-side surface.

In one embodiment, a distance TTL between a center of an object-side surface of the first lens element and an image plane of the optical lens on the optical axis and a total effective focal length F of the optical lens may satisfy: TTL/F is less than or equal to 5.

In one embodiment, the maximum field angle θ of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens in units of radians may satisfy: f multiplied by tan (theta/2)/(H/2) is less than or equal to 2.2. In one embodiment, the effective focal length F1 of the first lens and the effective focal length F2 of the second lens may satisfy: the ratio of F1/F2 is less than or equal to 0.5.

In one embodiment, the half aperture D12 of the maximum clear aperture of the image-side surface of the first lens corresponding to the maximum field angle of the optical lens and the saga 12 at the maximum clear aperture of the image-side surface of the first lens may satisfy: and | arctan (SAG12/D12) | is less than or equal to 20 and less than or equal to 45.

Another aspect of the present application provides an electronic device. The electronic device comprises the optical lens provided by the application and an imaging element for converting an optical image formed by the optical lens into an electric signal.

This application has adopted five lens, through optimizing shape, the focal power etc. that sets up each lens, makes optical lens have at least one beneficial effect such as miniaturization, big light ring, big visual field, back focal length, low cost, little distortion and high imaging quality.

Drawings

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

fig. 1 is a schematic view showing a structure of an optical lens according to embodiment 1 of the present application;

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

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

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

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

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

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

fig. 8 is a schematic view showing a structure of an optical lens according to embodiment 8 of the present application.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully 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 image side 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 accompanying drawings in conjunction with embodiments.

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

In an exemplary embodiment, the optical lens includes, for example, five lenses having optical powers, i.e., a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The five lenses are arranged along the optical axis in sequence from the object side to the image side.

In an exemplary embodiment, the optical lens may further include a photosensitive element disposed on the image plane. Alternatively, the photosensitive element provided to the imaging plane may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS).

In an exemplary embodiment, the first lens may have a negative power. The first lens may have a convex-concave type. The first lens has negative focal power, so that the imaging quality can be improved, and the problem that the divergence angle of object light is too large is effectively avoided, thereby being beneficial to controlling the caliber of the rear lens. The object side surface of the first lens is a convex surface, so that the large-field light can be collected as much as possible to enter the rear optical lens, the light flux is increased, and the imaging effect that the whole lens has a large field range is realized. In addition, the object side surface of the first lens is a convex surface, so that the lens is beneficial to being adapted to outdoor use environments, such as severe environments like rain and snow, water drops can slide off, and further, the influence of external environments on imaging quality can be reduced.

In an exemplary embodiment, the second lens may have a positive optical power. The second lens may have a meniscus type. The second lens has positive focal power, is beneficial to converging light rays, and reduces the chromatic aberration of the lens by adjusting the deflection degree of the light rays. Preferably, the second lens may be an aspherical lens to further improve the resolution quality.

In an exemplary embodiment, the third lens may have a positive optical power. The third lens may have a convex type. The third lens has positive focal power, is favorable for adjusting light rays, enables the light ray trend to be stably transited to the rear part, can balance spherical aberration introduced by the two front lenses, can converge the light rays to enable the diffused light rays to smoothly enter the rear part, and is favorable for enabling the light ray trend to be stably transited by further compressing the light rays.

In exemplary embodiments, the fourth lens may have a positive power or a negative power. The fourth lens may have a convex concave type, a concave type, or a convex-concave type. The focal power and the surface type of the fourth lens can amplify light rays emitted by the third lens, and the total length of the lens is favorably reduced. Preferably, the fourth lens may be an aspheric lens, which is beneficial for correcting astigmatism and curvature of field of the lens and improving resolution.

In an exemplary embodiment, the fifth lens may have a positive power or a negative power. The fifth lens may have a meniscus type or a convex-concave type. The focal power and the surface type of the fifth lens are arranged, so that the total length of the lens is favorably reduced, astigmatism and curvature of field are favorably corrected, and the resolving power of the optical lens is improved.

In an exemplary embodiment, an optical lens according to the present application may satisfy: TTL/F is less than or equal to 5, wherein TTL is the distance between the center of the object side surface of the first lens and the imaging surface of the optical lens on the optical axis, and F is the total effective focal length of the optical lens. More specifically, TTL and F further satisfy: TTL/F is less than or equal to 4. The TTL/F is less than or equal to 5, the length of the lens can be effectively limited, and the miniaturization of the lens is facilitated.

In an exemplary embodiment, an optical lens according to the present application may satisfy: D/H/FOV is less than or equal to 0.15, wherein FOV is the maximum field angle of the optical lens, D is the maximum clear aperture of the object side surface of the first lens corresponding to the maximum field angle of the optical lens, and H is the image height corresponding to the maximum field angle of the optical lens. More specifically, D, H and the FOV further satisfy: D/H/FOV is less than or equal to 0.09. The D/H/FOV is less than or equal to 0.15, the front end caliber is favorably reduced, and the miniaturization of the lens is favorably realized.

In an exemplary embodiment, an optical lens according to the present application may satisfy: BFL/TL is more than or equal to 0.1, wherein BFL is the distance between the center of the image side surface of the fifth lens and the imaging surface of the optical lens on the optical axis, TL is the distance between the center of the object side surface of the first lens and the center of the image side surface of the fifth lens on the optical axis. More specifically, BFL and TL further may satisfy: BFL/TL is more than or equal to 0.2. The requirement that BFL/TL is more than or equal to 0.1 is met, the length TL of the lens group is shorter and the BFL of the back focus is longer on the basis of realizing the miniaturization of the lens. The length TL of the lens group is short, which is beneficial to making the structure of the lens compact, reducing the sensitivity of the lens to MTF, improving the production yield and reducing the production cost. The back focus BFL is longer, which is beneficial to the assembly of the lens.

In an exemplary embodiment, an optical lens according to the present application may satisfy: (FOV multiplied by F)/H is more than or equal to 40, wherein FOV is the maximum angle of view of the optical lens, F is the total effective focal length of the optical lens, and H is the image height corresponding to the maximum angle of view of the optical lens. More specifically, FOV, F and H further satisfy: 45 is less than or equal to (FOV multiplied by F)/H is less than or equal to 55. The condition that (FOV multiplied by F)/H is more than or equal to 40 is met, large-angle resolution is facilitated to be realized, and the lens has the characteristics of large field angle and the like while the imaging effect is ensured.

In an exemplary embodiment, an optical lens according to the present application may satisfy: and | F1/F2| ≦ 0.5, wherein F1 is the effective focal length of the first lens, and F2 is the effective focal length of the second lens. More specifically, F1 and F2 may further satisfy: the ratio of F1 to F2 is less than or equal to 0.35. Satisfies the condition that the absolute value of F1/F2 is less than or equal to 0.5, is beneficial to the smooth transition of light rays and improves the resolution quality.

In an exemplary embodiment, an optical lens according to the present application may satisfy: and | F2/F3| ≧ 2, wherein F2 is the effective focal length of the second lens and F3 is the effective focal length of the third lens. More specifically, F2 and F3 may further satisfy: and the | F2/F3| is more than or equal to 5, which is beneficial to smooth transition of light rays so as to improve the resolution quality.

In an exemplary embodiment, an optical lens according to the present application may satisfy: i F3/F4I is less than or equal to 1, wherein F3 is the effective focal length of the third lens, and F4 is the effective focal length of the fourth lens. More specifically, F3 and F4 may further satisfy: the ratio of F3 to F4 is less than or equal to 0.5. Satisfying | F3/F4| less than or equal to 1, being beneficial to smooth transition of light rays and improving the resolution quality.

In an exemplary embodiment, an optical lens according to the present application may satisfy: and | F/R11| ≦ 1, wherein F is the total effective focal length of the optical lens, and R11 is the radius of curvature of the object-side surface of the first lens. More specifically, F and R11 further satisfy: the | F/R11| is less than or equal to 0.6. Satisfy | F/R11| ≦ 1, can effectively avoid the problem of first lens object side camber undersize, and then the production of aberration when can effectively avoid light to incide, and be favorable to the production of first lens.

In an exemplary embodiment, an optical lens according to the present application may satisfy: R12/R21 is ≧ 0.7, where R12 is the radius of curvature of the image-side surface of the first lens, and R21 is the radius of curvature of the object-side surface of the second lens. More specifically, R12 and R21 may further satisfy: R12/R21 is not less than-0.55. The requirement of R12/R21 is more than or equal to-0.7, which is beneficial to correcting the aberration of the optical lens and ensuring that the incident light is gentle when the light emitted from the first lens enters the object side of the second lens, thereby being beneficial to reducing the tolerance sensitivity of the optical lens.

In an exemplary embodiment, an optical lens according to the present application may satisfy: and | R31/R32| ≦ 2, wherein R31 is the radius of curvature of the object-side surface of the third lens, and R32 is the radius of curvature of the image-side surface of the third lens. More specifically, R31 and R32 may further satisfy: the ratio of R31 to R32 is less than or equal to 1.5. The requirement of | R31/R32| is less than or equal to 2, which is beneficial to smooth light transition and is beneficial to reducing sensitivity.

In an exemplary embodiment, an optical lens according to the present application may satisfy: (H-Fxtheta)/(Fxtheta) is less than or equal to 0.4, wherein H is the image height corresponding to the maximum field angle of the optical lens, F is the total effective focal length of the optical lens, and theta is the maximum field angle of the optical lens in radian. More specifically, H, F and θ further satisfy: (H-Fxtheta)/(Fxtheta) is less than or equal to 0.3. The requirement that (H-Fxtheta)/(Fxtheta) is less than or equal to 0.4 is met, and the imaging effect of the central area on the imaging surface of the lens is highlighted by increasing the focal length of the lens under the condition that the field angle and the size of the imaging surface of the lens are not changed.

In an exemplary embodiment, an optical lens according to the present application may satisfy: 0.5-R11/R12-6, wherein R11 is the curvature radius of the object side surface of the first lens, and R12 is the curvature radius of the image side surface of the first lens. More specifically, R11 and R12 may further satisfy: R11/R12 is more than or equal to 1 and less than or equal to 4. Satisfies the condition that R11/R12 is more than or equal to 0.5 and less than or equal to 6, and is beneficial to improving the resolution power.

In an exemplary embodiment, an optical lens according to the present application may satisfy: FNO/F is less than or equal to 1, wherein FNO is the F-number of the optical lens, and F is the total effective focal length of the optical lens. More specifically, FNO and F further may satisfy: FNO/F is less than or equal to 0.8. The FNO/F is less than or equal to 1, and the lens has the characteristics of large aperture, long focal length and the like.

In an exemplary embodiment, an optical lens according to the present application may satisfy: 20 ≦ arctan (SAG12/D12) | ≦ 45, wherein D12 is a half aperture of the maximum clear aperture of the image-side surface of the first lens corresponding to the maximum field angle of the optical lens, and SAG12 is a rise at the maximum clear aperture of the image-side surface of the first lens, that is, a distance on the optical axis from the intersection of the image-side surface of the first lens and the optical axis to the maximum clear aperture of the image-side surface of the first lens. More specifically, SAG12 and D12 further satisfy: the absolute value of arctan (SAG12/D12) is less than or equal to 25 and less than or equal to 40. The requirement that | arctan (SAG12/D12) | is more than or equal to 20 and less than or equal to 45 is met, the field angle of the first lens can be smaller, the illumination of the lens is favorably improved, the distortion is reduced, the change of the surface type under the high-temperature and low-temperature environment is reduced, and the resolution performance of the lens under the high-temperature and low-temperature environment is favorably improved.

In an exemplary embodiment, an optical lens according to the present application may satisfy: and dn/dm is less than or equal to 3, wherein dn is the central thickness of the nth lens with the largest central thickness in the first lens, the second lens, the fourth lens and the fifth lens, and dm is the central thickness of the mth lens with the smallest central thickness in the first lens, the second lens, the fourth lens and the fifth lens, wherein n and m are selected from 1, 2, 4 and 5. More specifically, dn and dm further satisfy: dn/dm is less than or equal to 2.5. The dn/dm is less than or equal to 3, the stability of each lens is favorably ensured, the small light change at high and low temperatures is facilitated, and the temperature performance of the lens is better.

In an exemplary embodiment, an optical lens according to the present application may satisfy: f multiplied by tan (theta/2)/(H/2) is less than or equal to 2.2, wherein theta is the maximum field angle of the optical lens with radian as a unit, F is the total effective focal length of the optical lens, and H is the image height corresponding to the maximum field angle of the optical lens. More specifically, F, FOV and H further satisfy: f multiplied by tan (theta/2)/(H/2) is more than or equal to 0.5 and less than or equal to 1.5. Satisfies the condition that F multiplied by tan (theta/2)/(H/2) is less than or equal to 2.2, and is beneficial to ensuring that the lens has the characteristics of small distortion and the like.

In an exemplary embodiment, an optical lens according to the present application may satisfy: d12/TTL is less than or equal to 0.2, wherein d12 is the distance between the first lens and the second lens on the optical axis, and TTL is the distance between the center of the object side surface of the first lens and the imaging surface of the optical lens on the optical axis. More specifically, d12 and TTL further satisfy: d12/TTL is less than or equal to 0.18. D12/TTL is less than or equal to 0.2, and miniaturization is facilitated.

In an exemplary embodiment, an optical lens according to the present application may satisfy: -0.5 ≦ (R21-R22)/(R21+ R22) ≦ 0.5, wherein R21 is the radius of curvature of the object-side surface of the second lens and R22 is the radius of curvature of the image-side surface of the second lens. More specifically, R21 and R22 may further satisfy: -0.1-0.2 (R21-R22)/(R21+ R22). The requirements of-0.5 ≦ (R21-R22)/(R21+ R22) ≦ 0.5 are met, the aberration of the optical lens is favorably corrected, the light rays emitted from the second lens are ensured to be gentle, and therefore the tolerance sensitivity of the optical lens is favorably reduced.

In an exemplary embodiment, an optical lens according to the present application may satisfy: and | F5/F | ≧ 3, wherein F5 is the effective focal length of the fifth lens, and F is the total effective focal length of the optical lens. More specifically, F5 and F further satisfy: and the | F5/F | is more than or equal to 3.5. The requirement that the absolute value of F5/F is more than or equal to 3 can ensure that the effective focal length of the fifth lens is longer, thereby being beneficial to increasing the total effective focal length of the optical lens and increasing the image height on an imaging surface.

In an exemplary embodiment, an optical lens according to the present application may satisfy: F3/F5 is less than or equal to 1, wherein F3 is the effective focal length of the third lens, and F5 is the effective focal length of the fifth lens. More specifically, F3 and F5 may further satisfy: F3/F5 is less than or equal to 0.8. The requirement of F3/F5 is less than or equal to 1, which is favorable for smooth transition of light and improves the resolution quality.

In an exemplary embodiment, a stop for limiting the light beam may be disposed between the second lens and the third lens to further improve the imaging quality of the optical lens. The diaphragm is arranged between the second lens and the third lens, so that light rays entering the optical lens can be effectively converged, the calibers of the front and rear end lenses are reduced, the assembly sensitivity of the lens is reduced, and the total length of the optical lens is shortened. In the embodiment of the present application, the stop may be disposed in the vicinity of the image side surface of the second lens or in the vicinity of the object side surface of the third lens. It should be noted, however, that the positions of the diaphragms disclosed herein are merely examples and not limitations; in alternative embodiments, the diaphragm may be disposed at other positions according to actual needs.

In an exemplary embodiment, the optical lens of the present application may further include a filter and/or a protective glass disposed between the fifth lens and the image plane to filter light rays having different wavelengths and prevent an image side element (e.g., a chip) of the optical lens from being damaged, as needed.

In an exemplary embodiment, the third lens may be a spherical lens; the first lens, the second lens, the fourth lens, and the fifth lens may be aspheric lenses. The specific number of the spherical lenses and the aspherical lenses is not particularly limited, and the number of the aspherical lenses can be increased when the imaging quality is mainly embodied. In particular, in order to improve the resolution quality of the optical system, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens may all be aspheric lenses. The aspheric lens is characterized in that: the curvature varies continuously from the center to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center 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 in imaging can be eliminated as much as possible, so that the imaging quality of the lens is improved. The aspheric lens helps to correct system aberration and improve resolving power.

The optical lens according to the above-described embodiment of the present application achieves at least one advantageous effect of miniaturization, a large aperture, a large angle of view, a back focal length, low cost, small distortion, and good imaging quality of the optical lens in the case of using only 5 lenses by appropriate setting of each lens shape and optical power. The optical lens also has the characteristics of compact structure, easy assembly and the like. The optical lens can have the characteristics of large aperture, large field angle and the like in an infrared band, can be matched with a larger chip, and can meet the requirements of small size, low sensitivity, high production yield, low cost and the like of the lens. Meanwhile, the optical lens also has better temperature performance, is favorable for the optical lens to have small change of imaging effect in high and low temperature environments, has stable image quality, and can be used in most environments.

In an exemplary embodiment, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens may all be glass lenses. The optical lens made of glass can inhibit the deviation of the back focus of the optical lens along with the temperature change so as to improve the stability of the system. Meanwhile, the glass material is adopted, so that the problem that the normal use of the lens is influenced due to the imaging blur of the lens caused by high and low temperature changes in the use environment can be avoided. Specifically, when the importance is paid to the resolution quality and the reliability, the first lens to the fifth lens may be all glass aspherical lenses. Of course, in the application where the requirement of temperature stability is low, the first lens to the fifth lens in the optical lens can also be made of plastic. The optical lens is made of plastic, so that the manufacturing cost can be effectively reduced. Of course, the first lens to the fifth lens in the optical lens provided by the present application may also be made of plastic and glass in a matching manner.

However, it will be appreciated by those skilled in the art that the number of lenses constituting the lens barrel may be varied to achieve the various results and advantages described in the present specification without departing from the claimed subject matter. For example, although five lenses are exemplified in the embodiment, the optical lens is not limited to include five lenses. The optical lens may also include other numbers of lenses, if desired. Specific examples of an optical lens applicable to the above-described embodiments are further described below with reference to the drawings.

Example 1

An optical lens according to embodiment 1 of the present application is described below with reference to fig. 1. Fig. 1 shows a schematic structural diagram of an optical lens according to embodiment 1 of the present application.

As shown in fig. 1, the optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4 and a fifth lens element L5.

The first lens element L1 is a convex-concave lens element with negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element L2 is a meniscus lens element with positive refractive power, and has a concave object-side surface S3 and a convex image-side surface S4. The third lens element L3 is a biconvex lens element with positive refractive power, and has a convex object-side surface S6 and a convex image-side surface S7. The fourth lens L4 is a convex-concave lens with negative power, and has a convex object-side surface S8 and a concave image-side surface S9. The fifth lens element L5 is a meniscus lens element with positive refractive power, and has a concave object-side surface S10 and a convex image-side surface S11.

The optical lens may further include a stop STO, which may be disposed between the second lens L2 and the third lens L3 to improve image quality. For example, the stop STO may be disposed between the second lens L2 and the third lens L3 at a position close to the object side surface S6 of the third lens L3.

Optionally, the optical lens may further include a filter L6 having an object-side surface S12 and an image-side surface S13. The filter L6 can be used to correct color deviations. The optical lens may further include a protective glass L7 having an object-side surface S14 and an image-side surface S15. The protective glass L7 can be used to protect the image sensing chip IMA located at the imaging plane. The light from the object passes through the respective surfaces S1 to S15 in order and is finally imaged on the imaging plane.

Table 1 shows the radius of curvature R, the thickness/distance d (it is understood that the thickness/distance d of the row in which S1 is located is the center thickness d1 of the first lens L1, the thickness/distance d of the row in which S2 is located is the separation distance d12 between the first lens L1 and the second lens L2, and so on) of each lens of the optical lens of example 1, the refractive index Nd, and the abbe number Vd.

TABLE 1

In embodiment 1, the object-side surface and the image-side surface of each of the first lens L1, the second lens L2, the fourth lens L4, and the fifth lens L5 may be aspheric, and the surface type x of each aspheric lens may 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 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. The conical coefficients k and the higher-order term coefficients a4, A6, A8, a10, a12, a14, and a16 that can be used for the respective aspherical mirrors S1, S2, S3, S4, S8, S9, S10, and S11 in example 1 are given in table 2 below.

Flour mark

k

A4

A6

A8

A10

A12

A14

A16

S1

/

-1.6832E-03

-4.4087E-04

1.6367E-05

1.0389E-06

/

S2

/

-5.0588E-03

-6.3260E-03

8.8357E-04

-6.7727E-04

/

S3

4.2525

-1.5586E-02

6.4305E-04

4.7622E-04

6.0854E-04

-2.1497E-05

-5.9637E-06

4.0286E-06

S4

-4.2161

-2.0566E-02

3.0123E-03

7.0485E-04

1.4245E-04

-9.1026E-05

9.3202E-07

5.2619E-06

S8

11.8734

-3.4540E-02

7.7752E-03

-4.9660E-04

-1.3631E-04

-7.9017E-06

5.6272E-06

-4.9748E-06

S9

-7.4085

-1.4679E-02

5.9253E-03

-8.4659E-05

6.9731E-04

-8.8135E-05

-3.7359E-05

2.5220E-05

S10

0.5990

-1.2056E-02

-2.4347E-03

2.0108E-03

-5.3277E-04

2.4321E-05

1.5043E-05

8.4322E-06

S11

-0.8138

1.2832E-02

-1.4065E-03

1.7662E-03

-5.1644E-04

1.7270E-05

2.8850E-07

-2.6534E-07

TABLE 2

Example 2

An optical lens according to embodiment 2 of the present application is described below with reference to fig. 2. In this embodiment and the following embodiments, descriptions of parts similar to those of embodiment 1 will be omitted for the sake of brevity. Fig. 2 shows a schematic structural diagram of an optical lens according to embodiment 2 of the present application.

As shown in fig. 2, the optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4 and a fifth lens element L5.

Optionally, the optical lens may further include a filter L6 having an object side S12 and an image side S13. The filter L6 can be used to correct color deviations. The optical lens may further include a protective glass L7 having an object-side surface S14 and an image-side surface S15. The protective glass L7 can be used to protect the image sensing chip IMA located at the imaging plane. The light from the object passes through the respective surfaces S1 to S15 in order and is finally imaged on the imaging plane.

Table 3 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 2. Table 4 shows conic coefficients and high-order term coefficients that can be used for each aspherical mirror surface in example 2, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 3

Flour mark

k

A4

A6

A8

A10

A12

A14

A16

S1

1.2776

-8.3076E-04

-3.8124E-04

1.9929E-05

1.1005E-06

/

S2

0.0050

-3.3368E-03

-4.9823E-03

8.8898E-04

-5.7292E-04

/

S3

4.8101

-1.6284E-02

1.0045E-04

2.0764E-04

4.9690E-04

-2.1497E-05

-5.9637E-06

4.0286E-06

S4

-4.7832

-1.9855E-02

3.0529E-03

5.6116E-04

8.5904E-05

-9.1026E-05

9.3202E-07

5.2619E-06

S8

12.2611

-3.5579E-02

8.2366E-03

-4.1146E-04

-2.0702E-04

-7.9017E-06

5.6272E-06

-4.9748E-06

S9

-7.2399

-1.1722E-02

6.8672E-03

-2.3341E-05

6.8434E-04

-1.8135E-05

-3.7359E-05

2.5220E-05

S10

1.5733

-1.3412E-02

-2.2656E-03

2.1934E-03

-5.2222E-04

2.4321E-05

1.8043E-05

8.4322E-06

S11

-0.3416

1.0650E-02

-1.6076E-03

1.7011E-03

-4.8772E-04

1.7270E-05

2.8850E-07

-2.6534E-07

TABLE 4

Example 3

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

As shown in fig. 3, the optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4 and a fifth lens element L5.

The first lens element L1 is a convex-concave lens element with negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element L2 is a meniscus lens element with positive refractive power, and has a concave object-side surface S3 and a convex image-side surface S4. The third lens L3 is a biconvex lens with positive power, and has a convex object-side surface S6 and a convex image-side surface S7. The fourth lens L4 is a biconcave lens with negative power, and has a concave object-side surface S8 and a concave image-side surface S9. The fifth lens element L5 is a meniscus lens element with positive refractive power, and has a concave object-side surface S10 and a convex image-side surface S11.

Table 5 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 3. Table 6 shows conic coefficients and high-order term coefficients that can be used for each aspherical mirror surface in example 3, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 5

Flour mark

k

A4

A6

A8

A10

A12

A14

A16

S1

0.5120

6.5409E-03

-1.1222E-03

3.0583E-05

1.8229E-06

/

S2

0.1000

1.3506E-02

-5.7728E-03

1.5750E-03

-1.2017E-03

/

S3

3.1202

-8.4234E-03

-2.2800E-04

5.3153E-04

8.3853E-04

-2.1497E-05

-5.9637E-06

4.0286E-06

S4

-5.7294

-1.7963E-02

4.7449E-03

-1.4059E-04

9.1275E-04

-9.1026E-05

9.3202E-07

5.2619E-06

S8

99.0000

-4.2137E-02

1.2505E-02

-2.7008E-03

2.5785E-04

-7.9017E-06

5.6272E-06

-4.9748E-06

S9

-20.3456

-2.7919E-02

3.0166E-03

-3.0325E-04

5.6188E-04

-8.8135E-05

-3.7359E-05

2.5220E-05

S10

6.4573

-2.0583E-02

-1.3817E-03

1.1722E-03

-3.7617E-05

2.4321E-05

1.8043E-05

8.4322E-06

S11

-0.5960

1.3122E-02

-5.4384E-04

2.2039E-03

-5.4671E-04

2.7270E-05

2.2159E-07

-2.6534E-07

TABLE 6

Example 4

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

As shown in fig. 4, the optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4 and a fifth lens element L5.

The first lens element L1 is a convex-concave lens element with negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens L2 is a meniscus lens with positive refractive power, and has a concave object-side surface S3 and a convex image-side surface S4. The third lens L3 is a biconvex lens with positive power, and has a convex object-side surface S6 and a convex image-side surface S7. The fourth lens L4 is a biconcave lens with negative power, and has a concave object-side surface S8 and a concave image-side surface S9. The fifth lens L5 is a meniscus lens having positive refractive power, and has a concave object-side surface S10 and a convex image-side surface S11.

The optical lens may further include a stop STO, which may be disposed between the second lens L2 and the third lens L3 to improve image quality. For example, the stop STO may be disposed between the second lens L2 and the third lens L3 at a position close to the image side surface S4 of the second lens L2.

Optionally, the optical lens may further include a filter L6 having an object side S12 and an image side S13. The filter L6 can be used to correct color deviations. The optical lens may further include a protective glass L7 having an object-side surface S14 and an image-side surface S15. The protective glass L7 can be used to protect the image sensing chip IMA located at the imaging plane. The light from the object sequentially passes through the respective surfaces S1 to S15 and is finally imaged on the imaging plane.

Table 7 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 4. Table 8 shows conic coefficients and high-order term coefficients that can be used for each aspherical mirror surface in example 4, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 7

Flour mark

k

A4

A6

A8

A10

A12

A14

A16

S1

0.4554

9.2147E-03

-1.6001E-03

5.1056E-05

2.7115E-06

/

S2

0.0756

1.6707E-02

-3.6421E-03

5.2926E-04

-8.6786E-04

/

S3

3.1046

-7.2832E-03

-1.6653E-04

-1.8625E-04

8.2668E-04

-2.1497E-05

-5.9637E-06

4.0286E-06

S4

-6.0365

-2.0022E-02

3.4169E-03

4.6450E-04

3.8536E-04

-9.1026E-05

9.3202E-07

5.2619E-06

S8

81.0482

-4.1997E-02

1.3375E-02

-3.1587E-03

4.1797E-04

-7.9017E-06

5.6272E-06

-4.9748E-06

S9

-29.7726

-3.2341E-02

3.2564E-03

-3.3723E-04

5.6130E-04

-8.8135E-05

-3.7359E-05

2.5220E-05

S10

8.2926

-2.4585E-02

-9.6693E-04

1.2825E-03

1.7409E-04

2.4321E-05

1.8043E-05

8.4322E-06

S11

-0.2829

1.1785E-02

-6.2975E-05

2.2021E-03

-5.3862E-04

2.7270E-05

1.8850E-07

-2.6534E-07

TABLE 8

Example 5

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

As shown in fig. 5, the optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4 and a fifth lens element L5.

The first lens element L1 is a convex-concave lens element with negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element L2 is a meniscus lens element with positive refractive power, and has a concave object-side surface S3 and a convex image-side surface S4. The third lens element L3 is a biconvex lens element with positive refractive power, and has a convex object-side surface S6 and a convex image-side surface S7. The fourth lens L4 is a convex-concave lens with positive power, and has a convex object-side surface S8 and a concave image-side surface S9. The fifth lens L5 is a convex-concave lens with negative power, and has a convex object-side surface S10 and a concave image-side surface S11.

Table 9 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 5. Table 10 shows conic coefficients and high-order term coefficients that can be used for each aspherical mirror surface in example 5, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 9

Flour mark

k

A4

A6

A8

A10

A12

A14

A16

S1

/

5.7657E-04

-9.5445E-06

-3.5847E-06

3.8129E-10

/

S2

/

-7.8634E-04

2.3729E-05

1.5913E-04

-2.1153E-05

/

S3

8.4755

-1.5382E-02

1.0971E-03

-8.2598E-04

1.8487E-04

-2.1497E-05

-5.9637E-06

4.0286E-06

S4

-7.7237

-2.3450E-02

-2.4954E-04

9.3367E-04

-4.1955E-05

-9.1026E-05

9.3202E-07

5.2619E-06

S8

6.6011

-1.6061E-02

-1.2229E-03

1.0130E-03

-2.9917E-04

-7.9017E-06

5.6272E-06

-4.9748E-06

S9

0.1597

-7.6530E-03

2.1508E-03

8.7242E-04

1.5265E-04

-8.8135E-05

-3.7359E-05

2.5220E-05

S10

-82.4500

-4.2012E-02

-7.6565E-03

3.6712E-03

-1.2205E-03

2.4321E-05

1.8043E-05

8.4322E-06

S11

81.2964

-1.9794E-02

-4.1954E-03

2.2790E-03

-4.9385E-04

1.7270E-05

2.8850E-07

-2.6534E-07

Watch 10

Example 6

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

As shown in fig. 6, the optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4 and a fifth lens element L5.

The first lens element L1 is a convex-concave lens element with negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens L2 is a meniscus lens with positive refractive power, and has a concave object-side surface S3 and a convex image-side surface S4. The third lens element L3 is a biconvex lens element with positive refractive power, and has a convex object-side surface S6 and a convex image-side surface S7. The fourth lens L4 is a convex-concave lens with positive power, and has a convex object-side surface S8 and a concave image-side surface S9. The fifth lens L5 is a convex-concave lens with positive refractive power, and has a convex object-side surface S10 and a concave image-side surface S11.

Table 11 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 6. Table 12 shows conic coefficients and high-order term coefficients that can be used for each aspherical mirror surface in example 6, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 11

Flour mark

k

A4

A6

A8

A10

A12

A14

A16

S1

0.2154

4.7129E-04

-2.9245E-05

-6.2413E-06

-1.8344E-07

/

S2

0.1656

-6.6530E-05

1.9691E-04

1.0579E-04

-8.7074E-05

/

S3

8.2522

-1.4862E-02

1.3699E-03

-7.3037E-04

1.9432E-04

-2.3495E-05

-7.1996E-06

3.7741E-06

S4

-8.4356

-2.3102E-02

-1.9767E-04

9.4577E-04

-4.5102E-05

-9.1895E-05

1.1050E-06

5.4226E-06

S8

6.3521

-1.6047E-02

-1.0427E-03

1.0288E-03

-2.8502E-04

8.1258E-07

8.5501E-06

-4.6672E-06

S9

-1.0394

-8.7835E-03

1.7987E-03

9.6387E-04

2.0854E-04

-7.6582E-05

-3.9550E-05

2.1946E-05

S10

-99.0000

-4.2403E-02

-7.6255E-03

3.7692E-03

-1.1698E-03

3.5342E-05

1.7549E-05

6.7302E-06

S11

81.2964

-1.9643E-02

-4.1492E-03

2.2873E-03

-4.9375E-04

2.7118E-05

1.6233E-07

-2.7157E-07

TABLE 12

Example 7

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

As shown in fig. 7, the optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4 and a fifth lens element L5.

The first lens element L1 is a convex-concave lens element with negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element L2 is a meniscus lens element with positive refractive power, and has a concave object-side surface S3 and a convex image-side surface S4. The third lens element L3 is a biconvex lens element with positive refractive power, and has a convex object-side surface S6 and a convex image-side surface S7. The fourth lens element L4 is a concave-convex lens element with negative power, and has a concave object-side surface S8 and a convex image-side surface S9. The fifth lens element L5 is a meniscus lens element with positive refractive power, and has a concave object-side surface S10 and a convex image-side surface S11.

Table 13 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 7. Table 14 shows conic coefficients and high-order term coefficients that can be used for each aspherical mirror surface in example 7, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

Watch 13

TABLE 14

Example 8

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

As shown in fig. 8, the optical lens includes, in order from an object side to an image side, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4 and a fifth lens element L5.

Table 15 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 8. Table 16 shows conic coefficients and high-order term coefficients that can be used for each aspherical mirror surface in example 8, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

Watch 15

Flour mark

k

A4

A6

A8

A10

A12

A14

A16

S1

1.1343

-7.8918E-04

-4.2367E-04

1.5928E-05

-4.6083E-07

5.5265E-09

-2.9022E-09

-1.5103E-09

S2

-0.0272

-1.0144E-02

-6.1398E-03

5.7247E-04

-5.8189E-04

-3.5346E-05

-1.2633E-05

-4.8061E-06

S3

3.2779

-1.1962E-02

5.4524E-03

1.0281E-03

9.2396E-05

-1.8612E-05

2.0227E-05

7.7072E-06

S4

-3.4499

-1.6125E-02

1.9468E-03

1.5383E-03

1.4245E-04

-3.2729E-04

-6.3219E-05

8.9566E-05

S8

-99.0000

-5.7090E-02

3.2270E-02

6.6522E-04

-1.6297E-03

1.2389E-03

-1.0493E-03

2.6416E-04

S9

-20.1188

-1.1193E-03

-8.1643E-03

2.2781E-03

2.1087E-03

8.7020E-04

9.5288E-05

-1.8673E-05

S10

0.5990

-2.1680E-02

-9.4350E-03

1.5096E-03

-4.3350E-04

6.5068E-04

5.3652E-05

-5.7818E-05

S11

-0.8138

1.7760E-02

-3.3607E-04

1.9774E-03

-5.1423E-04

3.0111E-05

-3.2352E-06

-2.5362E-07

TABLE 16

In summary, examples 1 to 8 satisfy the relationships shown in the following tables 17-1 and 17-2, respectively. In tables 17-1 and 17-2, units of TTL, F, D, H, BFL, TL, F1, F2, F3, F4, F5, SAG12, D12, D12, R11, R12, R21, R22, R31, R32 are millimeters (mm), units of FOV are degrees (°), and units of θ are radians (rad).

TABLE 17-1

TABLE 17-2

The present application also provides an electronic device that may include the optical lens according to the above-described embodiments of the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The electronic device may be a stand-alone electronic device such as a range finding camera or may be an imaging module integrated on a device such as a range finding device. Furthermore, the electronic device may also be a stand-alone imaging device such as a vehicle-mounted camera, or may be an imaging module integrated on a driving assistance system such as a car.

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

1. The optical lens assembly, in order from an object side to an image side along an optical axis, comprises:

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

a second lens having a positive refractive power, the object-side surface of which is concave and the image-side surface of which is convex;

a third lens with positive focal power, wherein the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface;

a fourth lens having an optical power; and

a fifth lens having optical power.

2. An optical lens barrel according to claim 1, wherein the fourth lens element has a positive optical power, and has a convex object-side surface and a concave image-side surface.

3. An optical lens system according to claim 1, wherein the fourth lens element has a negative power and has a convex object-side surface and a concave image-side surface.

4. An optical lens barrel according to claim 1, wherein the fourth lens element has a negative power, and has a concave object-side surface and a convex image-side surface.

5. An optical lens barrel according to claim 1, wherein the fourth lens element has a negative power, and has a concave object-side surface and a concave image-side surface.

6. An optical lens system according to claim 1, wherein the fifth lens element has a negative power and has a convex object-side surface and a concave image-side surface.

7. An optical lens barrel according to claim 1, wherein the fifth lens element has a positive optical power, and has a convex object-side surface and a concave image-side surface.

8. An optical lens barrel according to claim 1, wherein the fifth lens element has a positive power, and has a concave object-side surface and a convex image-side surface.

9. The optical lens assembly, in order from an object side to an image side along an optical axis, comprises:

a first lens having a negative optical power;

a second lens having a positive optical power;

a third lens having positive optical power;

a fourth lens having an optical power; and

a fifth lens having optical power;

the maximum field angle FOV of the optical lens, the total effective focal length F of the optical lens and the image height H corresponding to the maximum field angle of the optical lens satisfy the following conditions: (FOV F)/H.gtoreq.40.

10. An electronic apparatus, characterized by comprising the optical lens according to any one of claims 1 to 9 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.