Imaging Component, Camera Module and Mobile Terminal

Abstract

The present invention relates to an imaging component, a camera module and a mobile terminal. The imaging component sequentially includes, from the object side to the image side: a diaphragm; a first lens with a positive optical power, the object side surface of which is convex at the optical axis and the image side surface of which is concave at the optical axis; a second lens with a negative optical power, the object side surface of which is convex at the optical axis and the image side surface of which is concave at the optical axis; a third lens with a positive optical power, the image side surface of which is convex at the optical axis; a fourth lens with a positive optical power, the object side surface of which is concave at the optical axis and the image side surface of which is convex at the optical axis; a fifth lens with a negative optical power, the image side surface of which is concave at the optical axis, and the fifth lens is provided with at least one inflection point. When the imaging component satisfies the ranges of TTL / ImgH and (f - BF) / TTL of the present application, excellent imaging quality and miniaturized design can be ensured.

Description

Technical Field

[0001] The present invention relates to the field of optical imaging, and in particular to an imaging component, a camera module and a mobile terminal. Background Art

[0002] In recent years, with the gradual rise of portable electronic products such as smartphones and tablets, they have shown a trend of becoming lighter and thinner. Correspondingly, the demand for small and light imaging systems is also increasing. The photosensitive elements of general optical systems are nothing more than charge coupled devices (CCD) or complementary metal oxide semiconductor sensors (CMOS Sensor). With the development of chip technologies such as CCD or CMOS, the pixel size of the chip is getting smaller and smaller, and the lens module is gradually developing towards high pixels and miniaturization.

[0003] Traditional miniaturized lens modules mounted on portable electronic products mostly use three-piece or four-piece lens systems to reduce the total length of the lens. However, imaging systems with fewer lenses cannot achieve high imaging performance, and cannot meet the needs of higher-order lens modules. Although the traditional five-piece lens system has relatively good imaging performance, it has a long total lens length and is difficult to apply to portable electronic products with high miniaturization requirements. Therefore, with the trend of electronic products becoming lighter and thinner, there is an urgent need for an imaging system that can maintain excellent imaging effects and is miniaturized. Summary of the invention

[0004] Based on this, it is necessary to provide an imaging component, a camera module and a mobile terminal for an imaging system that takes into account both excellent imaging effects and miniaturization.

[0005] An imaging assembly, comprising, from the object side to the image side, the following:

[0006] Aperture;

[0007] a first lens having positive refractive power, wherein the object side surface of the first lens is convex at the optical axis, and the image side surface of the first lens is concave at the optical axis;

[0008] a second lens having negative optical power, wherein the object side surface of the second lens is convex at the optical axis, and the image side surface of the second lens is concave at the optical axis;

[0009] a third lens having positive refractive power, wherein the image side surface of the third lens is convex at the optical axis;

[0010] A fourth lens with positive optical power, the object side of the fourth lens being concave at the optical axis and the image side of the fourth lens being convex at the optical axis;

[0011] A fifth lens with negative optical power, the image side of the fifth lens being concave at the optical axis, and the fifth lens being provided with at least one inflection point;

[0012] The imaging assembly satisfies the following relationships:

[0013] TTL / ImgH < 1.40;

[0014] 0.650 < (f - BF) / TTL < 0.700;

[0015] Wherein, TTL is the distance from the object side of the first lens to the imaging surface on the optical axis, ImgH is the maximum imaging height of the imaging assembly, f is the focal length of the imaging assembly, and BF is the minimum distance from the image side of the fifth lens to the imaging surface in the direction parallel to the optical axis.

[0016] When the above TTL / ImgH range is satisfied, in the case of matching a chip of the same size, the imaging assembly has a shorter overall optical length, that is, it can effectively shorten the size of the imaging assembly in the direction of the optical axis, thereby realizing a miniaturized design. When TTL / ImgH is greater than the above range, the overall optical length of the imaging assembly will be relatively long, which is not conducive to shortening the size of the imaging assembly in the direction of the optical axis, and thus it is difficult to realize a miniaturized design.

[0017] When the above (f - BF) / TTL range is satisfied, the mechanical back focus of the imaging assembly can be reasonably compressed to shorten the overall optical length of the imaging assembly. At the same time, it can be more easily matched with the photosensitive element to ensure the imaging quality. And by reasonably configuring the focal length of the imaging assembly within the above range, the imaging assembly can have a better effect of balancing field curvature to improve the resolution ability, thereby improving the imaging quality. When (f - BF) / TTL is greater than the above range, the mechanical back focus of the imaging assembly will be overcompressed, causing the angle of light incident on the imaging surface to be too large and not easily matched with the photosensitive element, resulting in a reduction in imaging quality. When (f - BF) / TTL is less than the above range, the mechanical back focus of the imaging assembly is relatively long, which is not conducive to shortening the size of the imaging assembly in the direction of the optical axis, and thus it is difficult to realize a miniaturized design.

[0018] In one embodiment, the imaging assembly satisfies the following relationship:

[0019] 0.160 < (CT1 + CT2) / TTL < 0.210;

[0020] Wherein, CT1 is the central thickness of the first lens on the optical axis, CT2 is the central thickness of the second lens on the optical axis, and TTL is the distance from the object side surface of the first lens to the imaging surface on the optical axis. When the above relationships are satisfied, the central thicknesses of the lenses in the imaging assembly can be optimized, enabling the imaging assembly to have good distortion elimination ability. At the same time, the central thicknesses of the first lens and the second lens can be effectively compressed, thus meeting the requirements of miniaturized design and production and processing.

[0021] In one embodiment, the imaging assembly satisfies the following relationship:

[0022] 0.500 < SD11 / SD52 + SD21 / SD52 < 0.700;

[0023] Wherein, SD11 is the effective semi-aperture of the object side surface of the first lens, SD21 is the effective semi-aperture of the object side surface of the second lens, and SD52 is the effective semi-aperture of the image side surface of the fifth lens. Here, the effective semi-aperture of the object side surface or the image side surface is the distance from the maximum effective diameter of this surface to the optical axis. When the above relationship is satisfied, the apertures of the first lens and the second lens can be reasonably restricted, thereby ensuring that the front end (i.e., the first lens and the second lens) of the imaging assembly has a smaller aperture, and thus realizing the miniaturized design of the size of the front end of the optical assembly in the direction perpendicular to the optical axis.

[0024] In one embodiment, the imaging assembly satisfies the following relationship:

[0025] 0.040 < |SD11 - SD21| / EPD < 0.070;

[0026] Wherein, SD11 is the effective semi-aperture of the object side surface of the first lens, SD21 is the effective semi-aperture of the object side surface of the second lens, and EPD is the entrance pupil diameter of the imaging assembly. The effective semi-aperture is the distance from the maximum effective diameter on the lens surface to the optical axis. When the above relationship is satisfied, the first lens and the second lens have relatively consistent and smaller apertures, which can effectively reduce the front-end opening of the module carrying the imaging assembly, and thus realize the miniaturized design of the size of the front end of the optical assembly in the direction perpendicular to the optical axis.

[0027] In one embodiment, the imaging assembly satisfies the following relationship:

[0028] 2.00 < R12 / f + R21 / f < 5.00;

[0029] Wherein, f is the focal length of the imaging assembly, R12 is the curvature radius of the image side surface of the first lens on the optical axis, and R21 is the curvature radius of the object side surface of the second lens on the optical axis. When the above relationship is satisfied, by reasonably configuring the curvature radii of the first lens and the second lens, the excessive increase of spherical aberration can be suppressed to meet the requirement of good resolving power.

[0030] In one embodiment, the imaging assembly satisfies the following relationship:

[0031] (CT1 + CT2 + CT3 + CT4 + CT5) / f < 0.70;

[0032] Wherein, CT1 is the central thickness of the first lens on the optical axis, CT2 is the central thickness of the second lens on the optical axis, CT3 is the central thickness of the third lens on the optical axis, CT4 is the central thickness of the fourth lens on the optical axis, CT5 is the central thickness of the fifth lens on the optical axis, and f is the focal length of the imaging assembly. When the above relationship is satisfied, by optimizing the central thicknesses of each lens, the length of the imaging assembly can be effectively shortened, which is beneficial to realizing a miniaturized design.

[0033] In one embodiment, the imaging assembly satisfies the following relationship:

[0034] 3.00 < f3 / f4 < 16.00;

[0035] Wherein, f3 is the focal length of the third lens, and f4 is the focal length of the fourth lens. When the above relationship is satisfied, the optical powers of the third lens and the fourth lens can be reasonably configured, so as to effectively balance the spherical aberration and astigmatism generated by the first lens and the second lens, and improve the resolving ability.

[0036] In one embodiment, the imaging assembly satisfies the following relationship:

[0037] 1.6 < Nd2 < 1.7;

[0038] 1.4 < Nd3 < 1.7;

[0039] Wherein, Nd2 is the refractive index of the second lens, and Nd3 is the refractive index of the third lens. When the above relationship is satisfied, the refractive indices of the second lens and the third lens can be reasonably configured to correct the spherical chromatic aberration and improve the resolving ability.

[0040] An imaging module includes a photosensitive element and the imaging assembly according to any one of the above embodiments, and the photosensitive element is disposed on the imaging surface of the imaging assembly.

[0041] By adopting the above imaging component, while having an excellent imaging picture, the camera module effectively shortens the total size, thus achieving a miniaturized design.

[0042] A mobile terminal includes the camera module described in the above embodiment.

[0043] By adopting the above camera module, the mobile terminal can not only be designed to be thinner, but also has a larger internal design space. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 Schematic diagram of the imaging component provided by the first embodiment of the present invention;

[0045] Figure 2 Spherical chromatic aberration diagram (mm), astigmatism diagram (mm) and distortion diagram (%) of the imaging component in the first embodiment;

[0046] Figure 3 Schematic diagram of the imaging component provided by the second embodiment of the present invention;

[0047] Figure 4 Spherical chromatic aberration diagram (mm), astigmatism diagram (mm) and distortion diagram (%) of the imaging component in the second embodiment;

[0048] Figure 5 Schematic diagram of the imaging component provided by the third embodiment of the present invention;

[0049] Figure 6 Spherical chromatic aberration diagram (mm), astigmatism diagram (mm) and distortion diagram (%) of the imaging component in the third embodiment;

[0050] Figure 7 Schematic diagram of the imaging component provided by the fourth embodiment of the present invention;

[0051] Figure 8 Spherical chromatic aberration diagram (mm), astigmatism diagram (mm) and distortion diagram (%) of the imaging component in the fourth embodiment;

[0052] Figure 9 Schematic diagram of the imaging component provided by the fifth embodiment of the present invention;

[0053] Figure 10 Spherical chromatic aberration diagram (mm), astigmatism diagram (mm) and distortion diagram (%) of the imaging component in the fifth embodiment;

[0054] Figure 11 Schematic diagram of the camera module provided by an embodiment of the present invention;

[0055] Figure 12 Schematic diagram of the mobile terminal provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0056] For ease of understanding the present invention, the present invention will be described more fully hereinafter with reference to the relevant accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present invention is thorough and complete.

[0057] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present specification are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0059] Reference Figure 1 As shown, the imaging assembly 10 in an embodiment of the present invention sequentially includes a first lens L1 with a positive optical power, a second lens L2 with a negative optical power, a third lens L3 with a positive optical power, a fourth lens L4 with a positive optical power, and a fifth lens L5 with a negative optical power from the object side to the image side.

[0060] Among them, the first lens L1 includes an object side surface S2 and an image side surface S3, and the object side surface S2 is a convex surface; the second lens L2 includes an object side surface S4 and an image side surface S5, the object side surface S4 is a convex surface, and the image side surface S5 is a concave surface; the third lens L3 includes an object side surface S6 and an image side surface S7; the fourth lens L4 includes an object side surface S8 and an image side surface S9, and the image side surface S9 is a convex surface; the fifth lens L5 includes an object side surface S10 and an image side surface S11. The imaging assembly 10 further includes an imaging surface S14. In addition, the fifth lens L5 is provided with at least one inflection point.

[0061] In some embodiments, a diaphragm ST0 is further provided on the object side of the first lens L1. At this time, the exit pupil can be made to be far from the imaging surface S14, and the effective diameter of the imaging assembly 10 can be reduced without reducing the telecentricity of the imaging assembly 10, thereby achieving miniaturization. In some embodiments, the diaphragm ST0 is fixed to the first lens L1, so that the volume of the imaging assembly 10 can be reduced and a miniaturized design can be achieved.

[0062] By providing a stop ST0 on the object side of the first lens L1, the exit pupil can be made to be away from the imaging surface, and without reducing the telecentricity of the optical component 10, the effective diameter of the optical component 10 can be reduced, thereby achieving miniaturization. In some embodiments, the stop ST0 is fixed to the object side surface S2 of the first lens L1, so that the length of the optical component 10 in the optical axis direction can be reduced to achieve a miniaturized design.

[0063] In some embodiments, an infrared filter L6 is further provided between the fifth lens L5 and the imaging surface S14. The infrared filter L6 includes an object side surface S12 and an image side surface S13, and the infrared filter L6 is made of glass. The infrared filter L6 is used to isolate infrared light and prevent infrared light from entering the imaging surface S14, thereby preventing the infrared light from affecting the imaging color and clarity, and improving the imaging effect of the imaging component 10 during the day.

[0064] In some embodiments, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are all made of plastic. The plastic lenses can reduce the weight and cost of the imaging component 10. In other embodiments, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are all made of glass. The glass lenses have better optical performance and can withstand higher temperatures.

[0065] In some embodiments, the imaging component 10 satisfies the following relationships:

[0066] TTL / ImgH < 1.40;

[0067] 0.650 < (f - BF) / TTL < 0.700;

[0068] wherein, TTL is the distance from the object side surface S2 of the first lens L1 to the imaging surface S14 on the optical axis, ImgH is the maximum imaging height of the imaging component 10, f is the focal length of the imaging component 10, and BF is the minimum distance from the image side surface S11 of the fifth lens L5 to the imaging surface S14 in the direction parallel to the optical axis.

[0069] In some embodiments, TTL / ImgH can be 1.10, 1.12, 1.13, 1.16, 1.18, 1.20, 1.24, 1.26, 1.29, 1.30, or 1.31. When the above TTL / ImgH range is satisfied, in the case of matching chips of the same size, the imaging assembly 10 has a shorter total optical length, that is, it can effectively shorten the size of the imaging assembly 10 in the optical axis direction, thereby achieving a miniaturized design. When TTL / ImgH is greater than the above range, the total optical length of the imaging assembly 10 will be relatively long, which is not conducive to shortening the size of the imaging assembly 10 in the optical axis direction, and thus it is difficult to achieve a miniaturized design.

[0070] In some embodiments, the relationship of (f - BF) / TTL can be 0.651, 0.655, 0.660, 0.665, 0.670, 0.675, 0.680, 0.684, 0.687, 0.690, 0.692, 0.696, or 0.698. When the above (f - BF) / TTL relationship is satisfied, the mechanical back focus of the imaging assembly 10 can be reasonably compressed to shorten the total optical length of the imaging assembly 10, thereby shortening the size of the imaging assembly 10 in the optical axis direction and achieving a miniaturized design. At the same time, it can also be more easily matched with the photosensitive element to ensure the imaging quality. And by reasonably configuring the focal length of the imaging assembly 10 within the above range, the imaging assembly 10 can have a better effect of balancing field curvature to improve the resolution ability, thereby improving the imaging quality. When (f - BF) / TTL is greater than the above range, the mechanical back focus of the imaging assembly 10 will be over-compressed, causing the incident angle of light on the imaging surface S14 to be too large and not easily matched with the photosensitive element, resulting in a decrease in imaging quality. When (f - BF) / TTL is less than the above range, the mechanical back focus of the imaging assembly 10 is relatively long, which is not conducive to shortening the size of the optical assembly 10 in the optical axis direction, and thus it is difficult to achieve a miniaturized design.

[0071] In some embodiments, the imaging assembly 10 satisfies the following relationship:

[0072] 0.160 < (CT1 + CT2) / TTL < 0.210;

[0073] Wherein, CT1 is the central thickness of the first lens L1 on the optical axis, CT2 is the central thickness of the second lens L2 on the optical axis, and TTL is the distance from the object side surface S2 of the first lens L1 to the imaging surface S14 on the optical axis. In some embodiments, the relationship of (CT1 + CT2) / TTL can be 0.165, 0.168, 0.172, 0.175, 0.178, 0.180, 0.183, 0.185, 0.187, 0.195, 0.200, 0.206 or 0.208. When the above relationship is satisfied, the central thickness of the lenses in the imaging assembly 10 can be optimized, enabling the imaging assembly 10 to have a good ability to eliminate distortion. At the same time, the central thicknesses of the first lens L1 and the second lens L2 can be effectively compressed, thus meeting the requirements of miniaturized design and production and processing.

[0074] In some embodiments, the imaging assembly 10 satisfies the following relationship:

[0075] 0.500 < SD11 / SD52 + SD21 / SD52 < 0.700;

[0076] Wherein, SD11 is the effective semi-aperture of the object side surface S2 of the first lens L1, SD21 is the effective semi-aperture of the object side surface S4 of the second lens L2, and SD52 is the effective semi-aperture of the image side surface S11 of the fifth lens L5. The effective semi-aperture of the object side surface or the image side surface is the distance from the maximum effective diameter of this surface to the optical axis. In some embodiments, SD11 / SD52 + SD21 / SD52 can be 0.520, 0.540, 0.570, 0.580, 0.590, 0.595, 0.605, 0.610, 0.620, 0.630, 0.635, 0.640, 0.650 or 0.680. When the above relationship is satisfied, the apertures of the first lens L1 and the second lens L2 can be reasonably restricted, ensuring that the front aperture of the imaging assembly 10 is smaller, thereby achieving miniaturized design.

[0077] In some embodiments, the imaging assembly 10 satisfies the following relationship:

[0078] 0.040 < |SD11 - SD21| / EPD < 0.070;

[0079] Wherein, SD11 is the effective semi-aperture of the object side surface S2 of the first lens L1, SD21 is the effective semi-aperture of the object side surface S4 of the second lens L2, and EPD is the entrance pupil diameter of the imaging component 10. The effective semi-aperture of the object side surface or the image side surface is the distance from the maximum effective diameter of this surface to the optical axis. In some embodiments, |SD11 - SD21| / EPD can be 0.041, 0.045, 0.049, 0.055, 0.060, 0.065, or 0.068. When the above relationship is satisfied, the first lens L1 and the second lens L2 have relatively consistent and small apertures, which can effectively reduce the front-end opening of the module carrying the imaging component 10, thereby achieving a miniaturized design.

[0080] In some embodiments, the imaging component 10 satisfies the following relationship:

[0081] 2.00 < R12 / f + R21 / f < 5.00;

[0082] Wherein, f is the focal length of the imaging component 10, R12 is the curvature radius of the image side surface S3 of the first lens L1 at the optical axis, and R21 is the curvature radius of the object side surface S4 of the second lens L2 at the optical axis. In some embodiments, R12 / f + R21 / f can be 2.30, 2.45, 2.60, 2.70, 2.90, 3.00, 3.50, 3.80, 4.00, 4.50, 4.70, 4.75, 4.80, 4.85, or 4.95. When the above relationship is satisfied, by reasonably configuring the curvature radii of the first lens L1 and the second lens L2, the excessive increase of spherical aberration is suppressed to meet the requirement of good resolution.

[0083] In some embodiments, the imaging component 10 satisfies the following relationship:

[0084] (CT1 + CT2 + CT3 + CT4 + CT5) / f < 0.70;

[0085] Wherein, CT1 is the central thickness of the first lens L1 on the optical axis, CT2 is the central thickness of the second lens L2 on the optical axis, CT3 is the central thickness of the third lens L3 on the optical axis, CT4 is the central thickness of the fourth lens L4 on the optical axis, CT5 is the central thickness of the fifth lens L5 on the optical axis, and f is the focal length of the imaging component 10. In some embodiments, (CT1 + CT2 + CT3 + CT4 + CT5) / f can be 0.42, 0.45, 0.48, 0.50, 0.51, 0.53, 0.55, 0.56, 0.59, 0.61, 0.62, 0.64, 0.65, 0.67, or 0.68. When the above relationship is satisfied, the central thicknesses of each lens are optimized, thereby effectively shortening the length of the imaging component 10, which is beneficial to achieving a miniaturized design.

[0086] In some embodiments, the imaging assembly 10 satisfies the following relationship:

[0087] 3.00 < f3 / f4 < 16.00;

[0088] where f3 is the focal length of the third lens L3, and f4 is the focal length of the fourth lens L4. In some embodiments, f3 / f4 can be 3.20, 3.50, 3.70, 3.80, 3.90, 4.00, 4.20, 4.80, 4.90, 5.00, 5.10, 14.30, 14.70, 14.90, 15.00, 15.10, or 15.20. When the above relationship is satisfied, the optical powers of the third lens L3 and the fourth lens L4 can be reasonably configured, thereby effectively balancing the spherical aberration and astigmatism generated by the first lens L1 and the second lens L2, and improving the resolution.

[0089] In some embodiments, the imaging assembly 10 satisfies the following relationship:

[0090] 1.60 < Nd2 < 1.70;

[0091] 1.40 < Nd3 < 1.70;

[0092] where Nd2 is the refractive index of the second lens L2, and Nd3 is the refractive index of the third lens L3. In some embodiments, Nd2 can be 1.62, 1.65, 1.67, 1.68, or 1.69; Nd3 can be 1.45, 1.50, 1.55, 1.60, 1.65, or 1.68. When the above relationship is satisfied, the refractive indices of the second lens L2 and the third lens L3 can be reasonably configured to correct the spherochromatism and improve the resolution.

[0093] In addition, the aspheric surface formulas of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are:

[0094]

[0095] where Z is the distance from the corresponding point on the aspheric surface to the plane tangent to the surface vertex, r is the distance from any point on the aspheric surface to the optical axis, c is the curvature of the aspheric surface vertex, k is the conic constant, and Ai is the coefficient corresponding to the i-th high-order term in the aspheric surface formula.

[0096] First Embodiment

[0097] As Figure 1In the first embodiment shown, the imaging assembly 10 sequentially includes a stop ST0, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, a third lens L3 with positive refractive power, a fourth lens L4 with positive refractive power, and a fifth lens L5 with negative refractive power from the object side to the imaging surface. Figure 2 It is the spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the imaging assembly 10 in the first embodiment.

[0098] Among them, the object side surface S2 of the first lens L1 is convex at the optical axis, and the image side surface S3 of the first lens L1 is concave at the optical axis; the object side surface S2 of the first lens L1 is convex at the circumference, and the image side surface S3 of the first lens L1 is convex at the circumference. The object side surface S4 of the second lens L2 is convex at the optical axis, and the image side surface S5 of the second lens L2 is concave at the optical axis; the object side surface S4 of the second lens L2 is concave at the circumference, and the image side surface S5 of the second lens L2 is concave at the circumference. The object side surface S6 of the third lens L3 is convex at the optical axis, and the image side surface S7 of the third lens L3 is convex at the optical axis; the object side surface S6 of the third lens L3 is convex at the circumference, and the image side surface S7 of the third lens L3 is concave at the circumference. The object side surface S8 of the fourth lens L4 is concave at the optical axis, and the image side surface S9 of the fourth lens L4 is convex at the optical axis; the object side surface S8 of the fourth lens L4 is concave at the circumference, and the image side surface S9 of the fourth lens L4 is convex at the circumference. The object side surface S10 of the fifth lens L5 is convex at the optical axis, and the image side surface S11 of the fifth lens L5 is concave at the optical axis; the object side surface S10 of the fifth lens L5 is concave at the circumference, and the image side surface S11 of the fifth lens L5 is convex at the circumference. In addition, the fifth lens L5 is provided with at least one inflection point.

[0099] The object side surfaces and image side surfaces of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are all aspherical surfaces. The design of the aspherical surfaces can effectively solve the problem of visual field distortion, and can also enable the lens to achieve excellent optical effects in a smaller, thinner, and flatter state, thereby making the imaging assembly 10 more lightweight and thin.

[0100] In addition, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are all plastics. The use of plastic materials can reduce the weight of the imaging assembly 10 and reduce costs.

[0101] An infrared filter L6 made of glass is further provided between the fifth lens L5 and the imaging surface S14 of the imaging assembly 10. The infrared filter L6 can isolate infrared light and prevent infrared light from interfering with imaging, thereby improving the imaging performance of the imaging assembly 10.

[0102] In the embodiment, the imaging assembly 10 satisfies the following relationship:

[0103] TTL / ImgH = 1.23;

[0104] (f - BF) / TTL = 0.682;

[0105] Wherein, TTL is the distance from the object side surface S2 of the first lens L1 to the imaging surface S14 on the optical axis, ImgH is the maximum imaging height of the imaging component 10, f is the focal length of the imaging component 10, and BF is the minimum distance from the image side surface S11 of the fifth lens L5 to the imaging surface S14 in the direction parallel to the optical axis. At this time, when the above relationship of TTL / ImgH is satisfied, in the case of matching chips of the same size, the imaging component 10 has a shorter overall optical length, that is, it can effectively shorten the size of the imaging component 10 along the optical axis direction, thereby realizing a miniaturized design. In addition, when the above relationship of (f - BF) / TTL is satisfied, the mechanical back focus of the imaging component 10 can also be reasonably compressed to shorten the overall optical length of the imaging component 10, thereby shortening the size of the imaging component 10 along the optical axis direction, realizing a miniaturized design. At the same time, it can also be more easily matched with the photosensitive element to ensure the imaging quality. And by reasonably configuring the focal length of the imaging component 10 within the above range, the imaging component 10 can have a better effect of balancing field curvature to improve the resolution ability, thereby improving the imaging quality.

[0106] The imaging component 10 satisfies the following relationship:

[0107] (CT1 + CT2) / TTL = 0.204;

[0108] Wherein, CT1 is the central thickness of the first lens L1 on the optical axis, CT2 is the central thickness of the second lens L2 on the optical axis, and ImgH is the maximum imaging height of the imaging component 10. When the above relationship is satisfied, the central thickness of the lenses in the imaging component 10 can be optimized, so that the imaging component 10 has a good ability to eliminate distortion. At the same time, the central thicknesses of the first lens L1 and the second lens L2 can also be effectively compressed, so as to meet the requirements of miniaturized design and production and processing.

[0109] The imaging component 10 satisfies the following relationship:

[0110] SD11 / SD52 + SD21 / SD52 = 0.599;

[0111] Among them, SD11 is the effective semi-aperture of the object side surface S2 of the first lens L1, SD21 is the effective semi-aperture of the object side surface S4 of the second lens L2, and SD52 is the effective semi-aperture of the image side surface S11 of the fifth lens L5. The effective semi-aperture of the object side surface or the image side surface is the distance from the maximum effective diameter of this surface to the optical axis. When the above relationship is satisfied, the apertures of the first lens L1 and the second lens L2 can be reasonably restricted, so as to ensure that the front aperture of the imaging assembly 10 is small, thereby realizing miniaturized design.

[0112] The imaging assembly 10 satisfies the following relationship:

[0113] |SD11 - SD21| / EPD = 0.066;

[0114] Among them, SD11 is the effective semi-aperture of the object side surface S2 of the first lens L1, SD21 is the effective semi-aperture of the object side surface S4 of the second lens L2, and EPD is the entrance pupil diameter of the imaging assembly 10. The effective semi-aperture of the object side surface or the image side surface is the distance from the maximum effective diameter of this surface to the optical axis. When the above relationship is satisfied, the first lens L1 and the second lens L2 have relatively consistent and small apertures, which can effectively reduce the front end opening of the module carrying the imaging assembly 10, thereby realizing miniaturized design.

[0115] The imaging assembly 10 satisfies the following relationship:

[0116] R12 / f + R21 / f = 4.72;

[0117] Among them, f is the focal length of the imaging assembly 10, R12 is the radius of curvature of the image side surface S3 of the first lens L1 at the optical axis, and R21 is the radius of curvature of the object side surface S4 of the second lens L2 at the optical axis. When the above relationship is satisfied, by reasonably configuring the radii of curvature of the first lens L1 and the second lens L2, the excessive increase of spherical aberration can be suppressed to meet the requirements of good resolution.

[0118] The imaging assembly 10 satisfies the following relationship:

[0119] (CT1 + CT2 + CT3 + CT4 + CT5) / f = 0.63;

[0120] Among them, CT1 is the central thickness of the first lens L1 on the optical axis, CT2 is the central thickness of the second lens L2 on the optical axis, CT3 is the central thickness of the third lens L3 on the optical axis, CT4 is the central thickness of the fourth lens L4 on the optical axis, CT5 is the central thickness of the fifth lens L5 on the optical axis, and f is the focal length of the imaging assembly 10. When the above relationship is satisfied, the central thicknesses of each lens are optimized, thereby effectively shortening the length of the imaging assembly 10, which is beneficial to realizing miniaturized design.

[0121] The imaging assembly 10 satisfies the following relationship:

[0122] f3 / f4 = 3.94;

[0123] Wherein, f3 is the focal length of the third lens L3, and f4 is the focal length of the fourth lens L4. When the above relationship is satisfied, the optical powers of the third lens L3 and the fourth lens L4 can be reasonably configured, thereby effectively balancing the spherical aberration and astigmatism generated by the first lens L1 and the second lens L2, and improving the resolution.

[0124] The imaging assembly 10 satisfies the following relationship:

[0125] Nd2 = 1.66; Nd3 = 1.54;

[0126] Wherein, Nd2 is the refractive index of the second lens L2, and Nd3 is the refractive index of the third lens L3. When the above relationship is satisfied, the refractive indices of the second lens L2 and the third lens L3 can be reasonably configured to correct the spherical chromatic aberration and improve the resolution.

[0127] In the first embodiment, the effective focal length of the imaging assembly 10 is f = 2.72 mm, the f-number is FNO = 2.0, half of the maximum field of view angle is HFOV = 42.54 degrees (deg.), and the distance from the object side surface S2 of the first lens L1 to the imaging surface S14 on the optical axis is TTL = 3.20 mm.

[0128] In addition, the parameters of the imaging assembly 10 are given in Table 1 and Table 2. The elements from the object surface to the imaging surface S14 are arranged in the order of the elements in Table 1 from top to bottom. The Y radius in Table 1 is the curvature radius of the object side surface or the image side surface of the corresponding lens at the optical axis. The surface numbers 2 and 3 are the object side surface S2 and the image side surface S3 of the first lens L1, respectively. That is, in the same lens, the surface with the smaller surface number is the object side surface, and the surface with the larger surface number is the image side surface. The first value in the "thickness" parameter column of the first lens L1 is the thickness of the lens on the optical axis, and the second value is the distance from the image side surface of the lens to the object side surface of the subsequent lens on the optical axis. In addition, the value of the object surface corresponding to the surface number 0 in the "thickness" parameter is the distance from the object to the diaphragm ST0. In some other embodiments, the distance from the object to the diaphragm ST0 can also be 470 mm, 500 mm, 600 mm, 700 mm, 800 mm, 900 mm, 1000 mm, 2000 mm, 5000 mm or infinity or any distance. In the "thickness" parameter of the infrared filter L6, the value corresponding to the surface number 12 is the thickness of the infrared filter L6 on the optical axis, and the value corresponding to the surface number 13 is the distance from the image side surface S13 of the infrared filter L6 to the imaging surface S14. The K in Table 2 is the conic constant, and Ai is the coefficient corresponding to the i-th high-order term in the aspherical surface formula.

[0129] In addition, in the following embodiments, the refractive index and Abbe number of each lens are the values at the reference wavelength.

[0130] Table 1

[0131]

[0132]

[0133] Table 2

[0134]

[0135] Second Embodiment

[0136] As Figure 3 In the second embodiment shown, the imaging assembly 10 includes, in order from the object side to the imaging surface, a diaphragm ST0, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, a third lens L3 with positive refractive power, a fourth lens L4 with positive refractive power, and a fifth lens L5 with negative refractive power. Figure 4 are the spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the imaging assembly 10 in the second embodiment.

[0137] Among them, the object side surface S2 of the first lens L1 is convex at the optical axis, and the image side surface S3 of the first lens L1 is concave at the optical axis; the object side surface S2 of the first lens L1 is convex at the circumference, and the image side surface S3 of the first lens L1 is concave at the circumference. The object side surface S4 of the second lens L2 is convex at the optical axis, and the image side surface S5 of the second lens L2 is concave at the optical axis; the object side surface S4 of the second lens L2 is concave at the circumference, and the image side surface S5 of the second lens L2 is concave at the circumference. The object side surface S6 of the third lens L3 is convex at the optical axis, and the image side surface S7 of the third lens L3 is convex at the optical axis; the object side surface S6 of the third lens L3 is concave at the circumference, and the image side surface S7 of the third lens L3 is convex at the circumference. The object side surface S8 of the fourth lens L4 is concave at the optical axis, and the image side surface S9 of the fourth lens L4 is convex at the optical axis; the object side surface S8 of the fourth lens L4 is concave at the circumference, and the image side surface S9 of the fourth lens L4 is convex at the circumference. The object side surface S10 of the fifth lens L5 is concave at the optical axis, and the image side surface S11 of the fifth lens L5 is concave at the optical axis; the object side surface S10 of the fifth lens L5 is concave at the circumference, and the image side surface S11 of the fifth lens L5 is convex at the circumference. In addition, the fifth lens L5 is provided with at least one inflection point.

[0138] The object side and the image side of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are both aspherical surfaces. The design of the aspherical surfaces can effectively solve the problem of visual field distortion, and can also enable the lens to achieve excellent optical effects under the conditions of being smaller, thinner, and flatter, thereby making the imaging component 10 thinner and lighter.

[0139] In addition, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are all plastics. The use of plastic materials can reduce the weight of the imaging component 10 and lower the cost.

[0140] An infrared filter L6 made of glass material is further provided between the fifth lens L5 and the imaging surface S14 of the imaging component 10. The infrared filter L6 can isolate infrared light and prevent the interference of infrared light on imaging, thereby improving the imaging performance of the imaging component 10.

[0141] In the second embodiment, the effective focal length of the imaging component 10 is f = 2.47 mm, the aperture number is FNO = 2.0, half of the maximum field of view angle is HFOV = 45.13 degrees (deg.), and the distance from the object side S2 of the first lens L1 to the imaging surface S14 on the optical axis is TTL = 3.00 mm.

[0142] In addition, the various parameters of the imaging component 10 are given in Table 3 and Table 4. The elements from the object surface to the imaging surface S14 are arranged in the order of the elements in Table 3 from top to bottom. The Y radius in Table 3 is the curvature radius of the object side or the image side of the corresponding lens at the optical axis. The surface numbers 2 and 3 are respectively the object side S2 and the image side S3 of the first lens L1. That is, in the same lens, the surface with the smaller surface number is the object side, and the surface with the larger surface number is the image side. The first value in the "thickness" parameter column of the first lens L1 is the thickness of the lens on the optical axis, and the second value is the distance from the image side of the lens to the object side of the subsequent lens on the optical axis. In addition, the value of the object surface corresponding to the surface number 0 in the "thickness" parameter is the distance from the object to the diaphragm ST0. In some other embodiments, the distance from the object to the diaphragm ST0 can also be 470 mm, 500 mm, 600 mm, 700 mm, 800 mm, 900 mm, 1000 mm, 2000 mm, 5000 mm, infinity, or any distance. In the "thickness" parameter of the infrared filter L6, the value corresponding to the surface number 12 is the thickness of the infrared filter L6 on the optical axis, and the value corresponding to the surface number 13 is the distance from the image side S13 of the infrared filter L6 to the imaging surface S14. K in Table 4 is the conic constant, and Ai is the coefficient corresponding to the i-th high-order term in the aspherical surface formula. In addition, the refractive index and Abbe number of each lens are the values under the reference wavelength.

[0143] Table 3

[0144]

[0145]

[0146] Table 4

[0147]

[0148] Based on the parameter information provided above, the following data can be deduced:

[0149]

[0150]

[0151] Third Embodiment

[0152] As Figure 5 In the third embodiment shown, the imaging assembly 10 sequentially includes a diaphragm ST0, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, a third lens L3 with positive refractive power, a fourth lens L4 with positive refractive power, and a fifth lens L5 with negative refractive power from the object side to the imaging surface. Figure 6 It is the spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the imaging assembly 10 in the third embodiment.

[0153] Among them, the object side surface S2 of the first lens L1 is convex at the optical axis, and the image side surface S3 of the first lens L1 is concave at the optical axis; the object side surface S2 of the first lens L1 is convex at the circumference, and the image side surface S3 of the first lens L1 is concave at the circumference. The object side surface S4 of the second lens L2 is convex at the optical axis, and the image side surface S5 of the second lens L2 is concave at the optical axis; the object side surface S4 of the second lens L2 is concave at the circumference, and the image side surface S5 of the second lens L2 is concave at the circumference. The object side surface S6 of the third lens L3 is convex at the optical axis, and the image side surface S7 of the third lens L3 is convex at the optical axis; the object side surface S6 of the third lens L3 is concave at the circumference, and the image side surface S7 of the third lens L3 is convex at the circumference. The object side surface S8 of the fourth lens L4 is concave at the optical axis, and the image side surface S9 of the fourth lens L4 is convex at the optical axis; the object side surface S8 of the fourth lens L4 is concave at the circumference, and the image side surface S9 of the fourth lens L4 is convex at the circumference. The object side surface S10 of the fifth lens L5 is concave at the optical axis, and the image side surface S11 of the fifth lens L5 is concave at the optical axis; the object side surface S10 of the fifth lens L5 is convex at the circumference, and the image side surface S11 of the fifth lens L5 is convex at the circumference. In addition, the fifth lens L5 is provided with at least one inflection point.

[0154] The object side and the image side of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are all aspherical surfaces. The aspherical design can effectively solve the problem of visual field distortion and enable the lens to achieve excellent optical effects in a smaller, thinner, and flatter form, thereby making the imaging module 10 thinner and lighter.

[0155] In addition, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are all plastics. The use of plastic materials can reduce the weight of the imaging module 10 and lower the cost.

[0156] An infrared filter L6 made of glass is further provided between the fifth lens L5 and the imaging surface S14 of the imaging module 10. The infrared filter L6 can isolate infrared light and prevent the interference of infrared light on imaging, thereby improving the imaging performance of the imaging module 10.

[0157] In the third embodiment, the effective focal length of the imaging module 10 is f = 2.67 mm, the aperture number is FNO = 1.9, half of the maximum field of view angle is HFOV = 43.10 degrees (deg.), and the distance from the object side S2 of the first lens L1 to the imaging surface S14 on the optical axis is TTL = 3.18 mm.

[0158] In addition, the parameters of the imaging module 10 are given in Table 5 and Table 6. The elements from the object surface to the imaging surface S14 are arranged in the order of the elements in Table 5 from top to bottom. The Y radius in Table 5 is the curvature radius of the object side or the image side of the corresponding lens at the optical axis. The surface numbers 2 and 3 are the object side S2 and the image side S3 of the first lens L1 respectively. That is, in the same lens, the surface with a smaller surface number is the object side, and the surface with a larger surface number is the image side. The first value in the "thickness" parameter column of the first lens L1 is the thickness of the lens on the optical axis, and the second value is the distance from the image side of the lens to the object side of the subsequent lens on the optical axis. In addition, the value in the "thickness" parameter corresponding to the object surface with surface number 0 is the distance from the object to the diaphragm ST0. In some other embodiments, the distance from the object to the diaphragm ST0 can also be 470 mm, 500 mm, 600 mm, 700 mm, 800 mm, 900 mm, 1000 mm, 2000 mm, 5000 mm, infinity, or any distance. In the "thickness" parameter of the infrared filter L6, the value corresponding to the surface number 12 is the thickness of the infrared filter L6 on the optical axis, and the value corresponding to the surface number 13 is the distance from the image side S13 of the infrared filter L6 to the imaging surface S14. K in Table 6 is the conic constant, and Ai is the coefficient corresponding to the i-th high-order term in the aspherical surface formula. In addition, the refractive index and Abbe number of each lens are the values at the reference wavelength.

[0159] Table 5

[0160]

[0161]

[0162] Table 6

[0163]

[0164] Based on the parameter information provided above, the following data can be deduced:

[0165]

[0166]

[0167] Fourth Embodiment

[0168] As Figure 7 In the fourth embodiment shown, the imaging assembly 10 sequentially includes a diaphragm ST0, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, a third lens L3 with positive refractive power, a fourth lens L4 with positive refractive power, and a fifth lens L5 with negative refractive power from the object side to the imaging surface. Figure 8 Spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the imaging assembly 10 in the fourth embodiment.

[0169] Among them, the object side surface S2 of the first lens L1 is convex at the optical axis, and the image side surface S3 of the first lens L1 is concave at the optical axis; the object side surface S2 of the first lens L1 is convex at the circumference, and the image side surface S3 of the first lens L1 is concave at the circumference. The object side surface S4 of the second lens L2 is convex at the optical axis, and the image side surface S5 of the second lens L2 is concave at the optical axis; the object side surface S4 of the second lens L2 is concave at the circumference, and the image side surface S5 of the second lens L2 is concave at the circumference. The object side surface S6 of the third lens L3 is convex at the optical axis, and the image side surface S7 of the third lens L3 is convex at the optical axis; the object side surface S6 of the third lens L3 is concave at the circumference, and the image side surface S7 of the third lens L3 is convex at the circumference. The object side surface S8 of the fourth lens L4 is concave at the optical axis, and the image side surface S9 of the fourth lens L4 is convex at the optical axis; the object side surface S8 of the fourth lens L4 is concave at the circumference, and the image side surface S9 of the fourth lens L4 is convex at the circumference. The object side surface S10 of the fifth lens L5 is concave at the optical axis, and the image side surface S11 of the fifth lens L5 is concave at the optical axis; the object side surface S10 of the fifth lens L5 is convex at the circumference, and the image side surface S11 of the fifth lens L5 is convex at the circumference. In addition, the fifth lens L5 is provided with at least one inflection point.

[0170] The object side and the image side of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are both aspherical surfaces. The design of the aspherical surfaces can effectively solve the problem of visual field distortion, and can also enable the lens to achieve excellent optical effects in a smaller, thinner, and flatter state, thereby making the imaging component 10 thinner and lighter.

[0171] In addition, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are all plastics. The use of plastic materials can reduce the weight of the imaging component 10 and lower the cost.

[0172] An infrared filter L6 made of glass material is further provided between the fifth lens L5 and the imaging surface S14 of the imaging component 10. The infrared filter L6 can isolate infrared light and prevent the interference of infrared light on imaging, thereby improving the imaging performance of the imaging component 10.

[0173] In the fourth embodiment, the effective focal length of the imaging component 10 is f = 2.87 mm, the aperture number is FNO = 2.2, half of the maximum field of view angle is HFOV = 40.95 degrees (deg.), and the distance from the object side S2 of the first lens L1 to the imaging surface S14 on the optical axis is TTL = 3.40 mm.

[0174] In addition, the parameters of the imaging component 10 are given in Table 7 and Table 8. The elements from the object surface to the imaging surface S14 are arranged in the order of the elements in Table 7 from top to bottom. The Y radius in Table 7 is the curvature radius of the object side or the image side of the corresponding lens at the optical axis. The surface numbers 2 and 3 are respectively the object side S2 and the image side S3 of the first lens L1. That is, in the same lens, the surface with a smaller surface number is the object side, and the surface with a larger surface number is the image side. The first value in the "thickness" parameter column of the first lens L1 is the thickness of the lens on the optical axis, and the second value is the distance from the image side of the lens to the object side of the subsequent lens on the optical axis. In addition, the value in the "thickness" parameter corresponding to the object surface with the surface number 0 is the distance from the object to the diaphragm ST0. In some other embodiments, the distance from the object to the diaphragm ST0 can also be 470 mm, 500 mm, 600 mm, 700 mm, 800 mm, 900 mm, 1000 mm, 2000 mm, 5000 mm, infinity, or any distance. In the "thickness" parameter of the infrared filter L6, the value corresponding to the surface number 12 is the thickness of the infrared filter L6 on the optical axis, and the value corresponding to the surface number 13 is the distance from the image side S13 of the infrared filter L6 to the imaging surface S14. K in Table 8 is the conic constant, and Ai is the coefficient corresponding to the i-th high-order term in the aspherical surface formula. In addition, the refractive index and Abbe number of each lens are the values at the reference wavelength.

[0175] Table 7

[0176]

[0177]

[0178] Table 8

[0179]

[0180] Based on the parameter information provided above, the following data can be deduced:

[0181]

[0182]

[0183] The Fifth Embodiment

[0184] As Figure 9 shown in the fifth embodiment, the imaging assembly 10 includes, in order from the object side to the imaging surface, a diaphragm ST0, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, a third lens L3 with positive refractive power, a fourth lens L4 with positive refractive power, and a fifth lens L5 with negative refractive power. Figure 10 The spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the imaging assembly 10 in the fifth embodiment.

[0185] Among them, the object side surface S2 of the first lens L1 is convex at the optical axis, and the image side surface S3 of the first lens L1 is concave at the optical axis; the object side surface S2 of the first lens L1 is convex at the circumference, and the image side surface S3 of the first lens L1 is concave at the circumference. The object side surface S4 of the second lens L2 is convex at the optical axis, and the image side surface S5 of the second lens L2 is concave at the optical axis; the object side surface S4 of the second lens L2 is convex at the circumference, and the image side surface S5 of the second lens L2 is concave at the circumference. The object side surface S6 of the third lens L3 is concave at the optical axis, and the image side surface S7 of the third lens L3 is convex at the optical axis; the object side surface S6 of the third lens L3 is concave at the circumference, and the image side surface S7 of the third lens L3 is convex at the circumference. The object side surface S8 of the fourth lens L4 is concave at the optical axis, and the image side surface S9 of the fourth lens L4 is convex at the optical axis; the object side surface S8 of the fourth lens L4 is concave at the circumference, and the image side surface S9 of the fourth lens L4 is convex at the circumference. The object side surface S10 of the fifth lens L5 is convex at the optical axis, and the image side surface S11 of the fifth lens L5 is concave at the optical axis; the object side surface S10 of the fifth lens L5 is convex at the circumference, and the image side surface S11 of the fifth lens L5 is convex at the circumference. In addition, the fifth lens L5 is provided with at least one inflection point.

[0186] The object side and the image side of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are both aspherical surfaces. The aspherical design can effectively solve the problem of vision distortion and enable the lens to achieve excellent optical effects when it is smaller, thinner, and flatter, thereby making the imaging module 10 thinner and lighter.

[0187] In addition, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are all plastics. The use of plastic materials can reduce the weight of the imaging module 10 and lower the cost.

[0188] An infrared filter L6 made of glass is further provided between the fifth lens L5 and the imaging surface S14 of the imaging module 10. The infrared filter L6 can isolate infrared light and prevent the interference of infrared light on imaging, thereby improving the imaging performance of the imaging module 10.

[0189] In the fifth embodiment, the effective focal length of the imaging module 10 is f = 3.13 mm, the aperture number is FNO = 2.4, half of the maximum field of view angle is HFOV = 38.60 degrees (deg.), and the distance from the object side S2 of the first lens L1 to the imaging surface S14 on the optical axis is TTL = 3.40 mm.

[0190] In addition, the parameters of the imaging module 10 are given in Table 9 and Table 10. The elements from the object surface to the imaging surface S14 are arranged in the order of the elements in Table 9 from top to bottom. The Y radius in Table 9 is the curvature radius of the object side or the image side of the corresponding lens at the optical axis. The surface numbers 2 and 3 are the object side S2 and the image side S3 of the first lens L1 respectively. That is, in the same lens, the surface with a smaller surface number is the object side, and the surface with a larger surface number is the image side. The first value in the "thickness" parameter column of the first lens L1 is the thickness of the lens on the optical axis, and the second value is the distance from the image side of the lens to the object side of the subsequent lens on the optical axis. In addition, the value in the "thickness" parameter corresponding to the object surface with surface number 0 is the distance from the object to the diaphragm ST0. In some other embodiments, the distance from the object to the diaphragm ST0 can also be 470 mm, 500 mm, 600 mm, 700 mm, 800 mm, 900 mm, 1000 mm, 2000 mm, 5000 mm, infinity, or any distance. In the "thickness" parameter of the infrared filter L6, the value corresponding to surface number 12 is the thickness of the infrared filter L6 on the optical axis, and the value corresponding to surface number 13 is the distance from the image side S13 of the infrared filter L6 to the imaging surface S14. K in Table 10 is the conic constant, and Ai is the coefficient corresponding to the i-th high-order term in the aspherical surface formula. In addition, the refractive index and Abbe number of each lens are the values at the reference wavelength.

[0191] Table 9

[0192]

[0193] Table 10

[0194]

[0195]

[0196] Based on the above-provided parameter information, the following data can be deduced:

[0197]

[0198] As Figure 11 shown in the embodiment, the camera module 20 includes an imaging component 10 and an image sensor 210. The image sensor 210 is disposed on the imaging surface S14 of the imaging component 10. The image sensor 210 is a Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS). Since the imaging component 10 has a shorter overall optical length when matching chips of the same size, the overall size of the camera module 10 can be effectively reduced, achieving a more miniaturized design. In addition, the imaging component 10 also has a better effect of balancing field curvature and a higher resolution ability, so it has good imaging quality. The camera module 20 with excellent molding quality and miniaturization can better adapt to various miniaturized electronic devices and be applied to more scenarios. In some embodiments, the first lens L1 and the second lens L2 of the imaging component 10 have relatively consistent and small apertures, enabling the camera module 20 encapsulating the imaging component 10 to have a small front-end structure (the front-end corresponds to the first lens L1 and the second lens L2 of the camera module 20). The camera module 20 with a small front-end structure can also well adapt to various miniaturized electronic devices. Specifically, in some applications, the camera module 20 with a small front-end structure can reduce the area of the camera aperture on the electronic device to increase the screen-to-body ratio.

[0199] As Figure 12In the illustrated embodiment, the camera module 20 is applied to the mobile terminal 30. Specifically, in some embodiments, the mobile terminal 30 may be a device equipped with a camera lens, such as a smart phone, a PDA (Personal Digital Assistant), a game console, etc. In addition, the size of the internal hardware greatly affects the miniaturization degree of the mobile terminal 30. By applying a thinner camera module 20, the mobile terminal 30 can save space in the optical axis direction of the camera module 20, that is, it can save space in the thickness direction of the mobile terminal 30. This not only enables the mobile terminal 30 to be designed to be thinner, but also enables the flexible allocation of the positional relationship of the internal hardware of the mobile terminal 30, thereby improving the internal design space.

[0200] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0201] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. An imaging component, characterized in that, There are a total of five lenses with refractive power, which successively include from the object side to the image side: A diaphragm; A first lens with positive refractive power, the object side surface of the first lens is convex at the optical axis, and the image side surface of the first lens is concave at the optical axis; A second lens with negative refractive power, the object side surface of the second lens is convex at the optical axis, and the image side surface of the second lens is concave at the optical axis; A third lens with positive refractive power, the image side surface of the third lens is convex at the optical axis; A fourth lens with positive refractive power, the object side surface of the fourth lens is concave at the optical axis, and the image side surface of the fourth lens is convex at the optical axis; A fifth lens with negative refractive power, the image side surface of the fifth lens is concave at the optical axis, and at least one inflection point is provided on the fifth lens; The imaging assembly satisfies the following relationships: TTL / ImgH ≤ 1.31; 0.650 < (f - BF) / TTL < 0.700; 2.00 < R12 / f + R21 / f < 5.00; Wherein, TTL is the distance from the object side surface of the first lens to the imaging surface on the optical axis, ImgH is the maximum imaging height of the imaging assembly, f is the focal length of the imaging assembly, BF is the minimum distance from the image side surface of the fifth lens to the imaging surface in the direction parallel to the optical axis, f is the focal length of the imaging assembly, R12 is the radius of curvature of the image side surface of the first lens at the optical axis, and R21 is the radius of curvature of the object side surface of the second lens at the optical axis.

2. The imaging component according to claim 1, wherein The imaging assembly satisfies the following relationships: 0.160 < (CT1 + CT2) / TTL < 0.210; Wherein, CT1 is the central thickness of the first lens on the optical axis, CT2 is the central thickness of the second lens on the optical axis, and TTL is the distance from the object side surface of the first lens to the imaging surface on the optical axis.

3. The imaging component according to claim 1, wherein The imaging assembly satisfies the following relationships: 0.500 < SD11 / SD52 + SD21 / SD52 < 0.700; Wherein, SD11 is the effective semi-aperture of the object side surface of the first lens, SD21 is the effective semi-aperture of the object side surface of the second lens, and SD52 is the effective semi-aperture of the image side surface of the fifth lens.

4. The imaging component according to claim 1, wherein The imaging assembly satisfies the following relationships: 0.040 < |SD11 - SD21| / EPD < 0.070; Wherein, SD11 is the effective semi-aperture of the object side surface of the first lens, SD21 is the effective semi-aperture of the object side surface of the second lens, and EPD is the entrance pupil diameter of the imaging assembly.

5. The imaging component according to claim 1, characterized in that, The imaging assembly satisfies the following relationships: 1.15 ≤ TTL / ImgH ≤ 1.

31.

6. The imaging component according to claim 1, characterized in that, The imaging assembly satisfies the following relationships: 0.50 ≤ (CT1 + CT2 + CT3 + CT4 + CT5) / f < 0.70; Wherein, CT1 is the central thickness of the first lens on the optical axis, CT2 is the central thickness of the second lens on the optical axis, CT3 is the central thickness of the third lens on the optical axis, CT4 is the central thickness of the fourth lens on the optical axis, CT5 is the central thickness of the fifth lens on the optical axis, and f is the focal length of the imaging assembly.

7. The imaging component according to claim 1, characterized in that The imaging assembly satisfies the following relationships: 3.00 < f3 / f4 < 16.00; Wherein, f3 is the focal length of the third lens, and f4 is the focal length of the fourth lens.

8. The imaging component according to claim 1, wherein The imaging assembly satisfies the following relationships: 1.60 < Nd2 < 1.70; 1.40 < Nd3 < 1.70; Wherein, Nd2 is the refractive index of the second lens, and Nd3 is the refractive index of the third lens.

9. A camera module, characterized in that, It includes a photosensitive element and the imaging assembly according to any one of claims 1 to 8, and the photosensitive element is disposed on the imaging surface of the imaging assembly.

10. A mobile terminal, characterized in that, It includes the imaging module according to claim 9.

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