Optical Component, Imaging Module and Electronic Device

Abstract

The present invention relates to an optical component, an imaging module and an electronic device. The optical component sequentially includes, from the object side to the image side: a first lens with negative refractive power; a diaphragm; a second lens with positive refractive power, the image side surface of the second lens is convex at the paraxial region; a third lens with refractive power; a fourth lens with positive refractive power, the image side surface of the fourth lens is convex at the paraxial region; a fifth lens with negative refractive power, the object side surface of the fifth lens is convex at the paraxial region, the image side surface is concave at the paraxial region, and at least one of the object side surface and the image side surface of the fifth lens is an aspherical surface; and the following relationship is satisfied: 0.3 ≤ BFL / f4 ≤ 0.85; FNO ≤ 2.6; BFL is the shortest distance between the image side surface of the fifth lens and the imaging surface, f4 is the effective focal length of the fourth lens, and FNO is the aperture number of the optical component. Satisfying the relationship can reduce the shortest distance between the image side surface of the fifth lens and the imaging surface, which is beneficial to miniaturization design.

Description

Technical Field

[0001] The present invention relates to the field of optical imaging, and particularly to optical components, imaging modules, and electronic devices. Background Art

[0002] When a photographic imaging module has characteristics such as a large viewing angle and high resolution, often due to poor spatial allocation of optical components in the photographic imaging module, the reduction of the system length is restricted, resulting in a relatively large volume of the photographic imaging module, making it difficult to match the photosensitive element with a gradually decreasing pixel size. At the same time, the large-volume photographic imaging module also restricts the reduction of the thickness and weight of the electronic device. With the emergence of many emerging industries that require photographic functions, such as outdoor network live broadcasts, aerial photography drones, intelligent driving, and scene human-machine interaction, the miniaturized design of photographic imaging modules has gradually become one of the urgent problems to be solved. Summary of the Invention

[0003] Based on this, in view of the problem of how to reduce the size of optical components to achieve miniaturized design, it is necessary to provide an optical component, an imaging module, and an electronic device.

[0004] An optical component includes, in order from the object side to the image side:

[0005] A first lens with negative refractive power;

[0006] An aperture stop;

[0007] A second lens with positive refractive power, the image side surface of the second lens being convex at the paraxial region;

[0008] A third lens with refractive power;

[0009] A fourth lens with positive refractive power, the image side surface of the fourth lens being convex at the paraxial region;

[0010] A fifth lens with negative refractive power, the object side surface of the fifth lens being convex at the paraxial region, the image side surface being concave at the paraxial region, and at least one of the object side surface and the image side surface of the fifth lens being an aspherical surface;

[0011] The optical component satisfies the following relationships:

[0012] 0.3 ≤ BFL / f4 ≤ 0.85;

[0013] FNO ≤ 2.6;

[0014] Wherein, BFL is the shortest distance between the image side surface of the fifth lens and the imaging surface, f4 is the effective focal length of the fourth lens, and FNO is the f-number of the optical component. When the above relationships are satisfied, the shortest distance between the image side surface of the fifth lens and the imaging surface can be effectively reduced, which is beneficial to miniaturized design.

[0015] In one embodiment, the optical component satisfies the following relationship:

[0016] 6.3 ≤ (TTL - CT24) * Imgh ≤ 9.5;

[0017] Wherein, TTL is the distance from the object side of the first lens to the imaging surface on the optical axis, CT24 is the distance from the image side of the first lens to the object side of the second lens on the optical axis, and Imgh is half of the diagonal length of the effective pixel region on the imaging surface. When light is transmitted from the first lens to the second lens and maintains a certain height, the field of view angle of the optical component will increase. Therefore, the shortening range of the air gap between the first lens and the second lens is limited. When the above relationship is satisfied, the lenses can be reasonably arranged by matching the distance between the first lens and the second lens and the overall optical length, improving the space utilization rate of the system and shortening the system length. Furthermore, the size of the optical component can be reduced by adjusting the size of the pixel region on the imaging surface, reducing the difficulty of lens processing and forming, thereby improving the production yield, and at the same time balancing the wide-angle property and miniaturization of the optical component.

[0018] In one embodiment, the optical component satisfies the following relationship:

[0019] 0.12 ≤ CT24 / tan(HFOV) ≤ 0.47;

[0020] Wherein, CT24 is the distance from the image side of the first lens to the object side of the second lens on the optical axis, the unit of CT24 is mm, and HFOV is half of the maximum field of view angle of the optical component. When the above relationship is satisfied, the air interval distance between the first lens and the second lens is reasonably adjusted, so that the optical component has a wide-angle characteristic, and can coordinate the imaging quality and miniaturization design.

[0021] In one embodiment, the optical component satisfies the following relationship:

[0022] 0.13 ≤ f / R2 ≤ 1.00;

[0023] Wherein, f is the effective focal length of the optical component, and R2 is the curvature radius of the image side of the first lens at the paraxial region. When the above relationship is satisfied, astigmatism can be effectively balanced, the imaging quality of the optical component can be improved, and at the same time the effective focal length of the optical component can be shortened, which is beneficial to realizing the wide-angle characteristic.

[0024] In one embodiment, the optical component satisfies the following relationship:

[0025] 15 ≤ (V2 - V3) / f2 ≤ 32;

[0026] Wherein, V2 is the Abbe number of the second lens, V3 is the Abbe number of the third lens, and f2 is the effective focal length of the second lens, with the unit of f2 being mm. When the above relationships are satisfied, the Abbe numbers of the second lens and the third lens can be reasonably arranged, and the effective focal length of the second lens can be controlled, thereby correcting chromatic aberration and simultaneously increasing the field angle of the second lens to achieve a wide-angle characteristic.

[0027] In one embodiment, the optical component satisfies the following relational expression:

[0028] -1.4 ≤ (R6 + R7) / (R6 - R7) ≤ 13.0;

[0029] Wherein, R6 is the paraxial curvature radius of the object side surface of the third lens, and R7 is the paraxial curvature radius of the image side surface of the third lens. When the above relationship is satisfied, the principal point of the third lens shifts towards the image side direction, which is beneficial to increasing the field angle of the optical component.

[0030] In one embodiment, the optical component satisfies the following relational expression:

[0031] 0.40 ≤ f / CT411 ≤ 1.15;

[0032] Wherein, f is the effective focal length of the optical component, and CT411 is the distance on the optical axis from the object side surface of the second lens to the image side surface of the fifth lens. When the above relationship is satisfied, the effective focal length of the optical component is shortened, which is beneficial to the design of a large field angle, can effectively utilize the space, and makes the optical component more compact while obtaining a larger imaging range.

[0033] In one embodiment, the optical component satisfies the following relational expression:

[0034] 0.014 ≤ |SAG4| / SAG2 ≤ 0.500;

[0035] Wherein, SAG2 is the distance in the optical axis direction from the intersection point of the image side surface of the first lens and the optical axis to the position of the maximum effective radius of the image side surface of the first lens, and SAG4 is the distance in the optical axis direction from the intersection point of the object side surface of the second lens and the optical axis to the position of the maximum effective radius of the object side surface of the second lens. Since the first lens has a negative refractive power and the second lens has a positive refractive power, and when the above relationship is satisfied, SAG2 can be increased while ensuring aberration balance to enable the optical component to achieve a wide-angle design; in addition, when the above relationship is satisfied, the bending angle of the light can also be adjusted to reduce the sensitivity of the second lens to the optical component and improve the production and processing yield.

[0036] In one embodiment, the optical component satisfies the following relational expression:

[0037] 0.03 ≤ SAG11 / SD11 ≤ 0.26;

[0038] Wherein, SAG11 is the distance in the optical axis direction from the intersection point of the image side surface of the fifth lens and the optical axis to the position of the maximum effective radius of the image side surface of the fifth lens, and SD11 is the maximum effective semi-aperture of the image side surface of the fifth lens. When the above relationship is satisfied, the distortion generated by the optical system can be effectively reduced.

[0039] In one embodiment, the optical component satisfies the following relational expression:

[0040] -4.0 ≤ TTL / f5 ≤ -0.5;

[0041] Wherein, TTL is the distance on the optical axis from the object side surface of the first lens to the image side surface of the fifth lens, and f5 is the effective focal length of the fifth lens. When the above relationship is satisfied, the total length of the optical component can be effectively shortened, the aberration of the optical system can be corrected, and the imaging quality can be improved.

[0042] An imaging module includes a photosensitive element and the optical component according to any one of the above embodiments, and the photosensitive element is disposed on the image side of the optical component.

[0043] An electronic device includes the imaging module according to the above embodiment. Description of the Drawings

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

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

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

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

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

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

[0050] Figure 7Schematic diagram of the optical component provided in the fourth embodiment of the present application;

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

[0052] Figure 9 Schematic diagram of the optical component provided in the fifth embodiment of the present application;

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

[0054] Figure 11 Schematic diagram of the optical component provided in the sixth embodiment of the present application;

[0055] Figure 12 Spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component in the sixth embodiment;

[0056] Figure 13 Schematic diagram of the optical component provided in the seventh embodiment of the present application;

[0057] Figure 14 Spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component in the seventh embodiment;

[0058] Figure 15 Schematic diagram of the imaging module provided in one embodiment of the present application;

[0059] Figure 16 Schematic diagram of the electronic device provided in one embodiment of the present application. Detailed implementation manners

[0060] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The 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 to make the disclosure of the present invention more thorough and comprehensive.

[0061] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may 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.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of this specification are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0063] The optical component with a miniaturized design provided by this application can be applied to devices that require a camera function, such as smartphones, aerial drones, self-driving cars, game consoles, etc.

[0064] Reference Figure 1 , the optical component 100 of an embodiment of this application includes, in order from the object side to the image side, a first lens L1 with negative refractive power, a stop STO, a second lens L2 with positive refractive power, a third lens L3 with refractive power; a fourth lens L4 with positive refractive power, and a fifth lens L5 with negative refractive power.

[0065] Among them, the first lens L1 includes an object side surface S1 and an image side surface S2; the second lens L2 includes an object side surface S3 and an image side surface S4; the third lens L3 includes an object side surface S5 and an image side surface S6; the fourth lens L4 includes an object side surface S7 and an image side surface S8; the fifth lens L5 includes an object side surface S9 and an image side surface S10. In addition, there is an imaging surface S13 on the image side of the fifth lens L5, and the imaging surface S13 can be the photosensitive surface of the photosensitive element.

[0066] The image side surface S4 of the second lens L2 is convex at the paraxial region, the image side surface S8 of the fourth lens L4 is convex at the paraxial region, the object side surface S9 of the fifth lens L5 is convex at the paraxial region, the image side surface S10 of the fifth lens L5 is concave at the paraxial region, and at least one of the object side surface S9 and the image side surface S10 of the fifth lens L5 is an aspherical surface.

[0067] The surface formula of the aspherical surface is:

[0068]

[0069] Among them, Z is the distance from the corresponding point on the aspherical surface to the plane tangent to the surface vertex, r is the distance from the corresponding point on the aspherical surface to the optical axis, c is the curvature of the aspherical surface vertex, k is the conic constant, and Ai is the coefficient corresponding to the i-th high-order term in the aspherical surface formula.

[0070] In some embodiments, the object side surfaces S9 and the image side surfaces S10 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.

[0071] In some embodiments, 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. At this time, the plastic lenses can reduce the weight of the optical component 100 and lower the production cost. In some embodiments, 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 glass. At this time, the optical component 100 can withstand higher temperatures and has better optical performance. In some other embodiments, only the material of the first lens L1 is glass, and the materials of the other lenses are plastics. At this time, the first lens L1 closest to the object side can well withstand the influence of the environmental temperature on the object side, and due to the relationship that the other lenses are made of plastics, the optical component 100 can also maintain a low production cost. It should be noted that according to actual requirements, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 can be any one of plastics or glass respectively, and no limitation is made here.

[0072] Continuing to refer to Figure 1 , in some embodiments, an infrared filter 110 is further provided on the image side of the fifth lens L5. The infrared filter 110 can filter infrared light, prevent the infrared light from passing through and reaching the photosensitive element, and avoid the photosensitive element from receiving the infrared interference light and affecting normal imaging, thereby improving the imaging quality of the optical component 100. In some embodiments, the infrared filter 110 can be assembled with the photosensitive element on the image side of the optical component 100 when the optical component 100 and the photosensitive element are assembled. The infrared filter 110 includes an object side surface S11 and an image side surface S12. In some embodiments, during the assembly process of the optical component 100, the infrared filter 110 can be assembled together with the lenses. At this time, the infrared filter 110 belongs to an optical element of the optical component 100. In some other embodiments, the infrared filter 110 can also be installed between the fifth lens L5 and the photosensitive element when the optical component 100 and the photosensitive element are assembled into a module.

[0073] In some embodiments, the optical component 100 satisfies the following relationships:

[0074] 0.3 ≤ BFL / f4 ≤ 0.85;

[0075] FNO ≤ 2.6;

[0076] Among them, BFL is the shortest distance between the image side S10 of the fifth lens L5 and the imaging surface S13, f4 is the effective focal length of the fourth lens L4, and FNO is the aperture number of the optical component. Preferably, 0.30 ≤ BFL / f4 ≤ 0.75. Specifically, BFL / f4 can be 0.370, 0.450, 0.500, 0.550, 0.600, 0.680, 0.710, or 0.730; FNO can be 2.00, 2.05, 2.10, 2.20, 2.30, 2.40, 2.50, or 2.55. When the above relationship is satisfied, the shortest distance between the image side S10 of the fifth lens L5 and the imaging surface S13 can be effectively reduced, which is beneficial to the miniaturization design. In addition, the optical component 100 can also have the characteristics of a large aperture.

[0077] In some embodiments, the optical component 100 satisfies the following relational expression:

[0078] 6.3 ≤ (TTL - CT24) * Imgh ≤ 9.5;

[0079] Among them, TTL is the distance from the object side S1 of the first lens L1 to the imaging surface S13 on the optical axis, CT24 is the distance from the image side S2 of the first lens L1 to the object side S3 of the second lens L2 on the optical axis, and Imgh is half of the diagonal length of the effective pixel region on the imaging surface S13. The units of TTL, CT24, and Imgh are all mm. Specifically, (TTL - CT24) * Imgh can be 6.80, 6.85, 7.00, 7.60, 7.80, 8.00, 8.50, 8.70, 8.80, or 8.90. When light is transmitted from the first lens L1 to the second lens L2 and maintains a certain height, the field of view angle of the optical component 100 will increase. Therefore, the shortening range of the air gap between the first lens L1 and the second lens L2 is limited. When the above relationship is satisfied, the lenses can be reasonably arranged by matching the distance between the first lens L1 and the second lens L2 and the overall optical length, improving the space utilization rate of the system and shortening the system length. Furthermore, the size of the optical component 100 can be reduced by adjusting the size of the pixel region on the imaging surface S13, reducing the difficulty of lens processing and forming, thereby improving the production yield rate, and at the same time balancing the wide-angle property and miniaturization of the optical component 100.

[0080] In some embodiments, the optical component 100 satisfies the following relational expression:

[0081] 0.12 ≤ CT24 / tan(HFOV) ≤ 0.47;

[0082] Wherein, CT24 is the distance on the optical axis from the image side surface S2 of the first lens L1 to the object side surface S3 of the second lens L2. The unit of CT24 is mm, and HFOV is half of the maximum field of view angle of the optical component 100. Specifically, CT24 / tan(HFOV) can be 0.165, 0.175, 0.210, 0.250, 0.300, 0.350, 0.400, 0.410, or 0.415. When the above relationship is satisfied, the air separation distance between the first lens L1 and the second lens L2 is reasonably adjusted, so that the optical component 100 has a wide-angle characteristic, and can coordinate the imaging quality and the miniaturization design at the same time.

[0083] In some embodiments, the optical component 100 satisfies the following relational expression:

[0084] 0.13 ≤ f / R2 ≤ 1.00;

[0085] Wherein, f is the effective focal length of the optical component 100, and R2 is the radius of curvature of the image side surface S2 of the first lens L1 at the paraxial region. Specifically, f / R2 can be 0.210, 0.220, 0.300, 0.400, 0.450, 0.550, 0.750, 0.850, 0.950, or 0.980. When the above relationship is satisfied, astigmatism can be effectively balanced, the imaging quality of the optical component 100 can be improved, and at the same time, the effective focal length of the optical component 100 can be shortened, so as to facilitate the realization of the wide-angle characteristic.

[0086] In some embodiments, the optical component 100 satisfies the following relational expression:

[0087] 15 ≤ (V2 - V3) / f2 ≤ 32;

[0088] Wherein, V2 is the Abbe number of the second lens L2, V3 is the Abbe number of the third lens L3, and f2 is the effective focal length of the second lens L2. The unit of f2 is mm. Specifically, (V2 - V3) / f2 can be 16.000, 17.000, 18.000, 25.000, 28.000, 29.000, or 30.000. When the above relationship is satisfied, the Abbe numbers of the second lens L2 and the third lens L3 can be reasonably arranged, and the effective focal length of the second lens L2 can be controlled, so as to correct chromatic aberration, and at the same time, the field of view angle of the second lens L2 can be increased to realize the wide-angle characteristic.

[0089] In some embodiments, the optical component 100 satisfies the following relational expression:

[0090] -1.4 ≤ (R6 + R7) / (R6 - R7) ≤ 13.0;

[0091] Among them, R6 is the paraxial curvature radius of the object side surface S5 of the third lens L3, and R7 is the paraxial curvature radius of the image side surface S6 of the third lens L3. Specifically, (R6 + R7) / (R6 - R7) can be -1.300, -1.200, 0.600, 1.800, 3.000, 10.000, 11.000 or 12.000. When the above relationship is satisfied, the principal point of the third lens L3 shifts towards the image side, which is beneficial to increasing the field of view angle of the optical component 100.

[0092] In some embodiments, the optical component 100 satisfies the following relational expression:

[0093] 0.40 ≤ f / CT411 ≤ 1.15;

[0094] Among them, f is the effective focal length of the optical component 100, and CT411 is the distance on the optical axis from the object side surface S3 of the second lens L2 to the image side surface S10 of the fifth lens L5. Specifically, the relationship of f / CT411 can be 0.620, 0.650, 0.700, 0.800, 0.820, 0.840, 0.870, 0.890 or 0.900. When the above relationship is satisfied, the effective focal length of the optical component 100 is shortened, which is beneficial to the design of a large field of view angle, and can effectively utilize the space, making the optical component 100 more compact while obtaining a larger imaging range.

[0095] In some embodiments, the optical component 100 satisfies the following relational expression:

[0096] 0.014 ≤ |SAG4| / SAG2 ≤ 0.500;

[0097] Among them, SAG2 is the distance in the optical axis direction from the intersection of the image side surface S2 of the first lens L1 and the optical axis to the position of the maximum effective radius of the image side surface S2 of the first lens L1, and SAG4 is the distance in the optical axis direction from the intersection of the object side surface S3 of the second lens L2 and the optical axis to the position of the maximum effective radius of the object side surface S3 of the second lens L2. Specifically, |SAG4| / SAG2 can be 0.025, 0.030, 0.080, 0.150, 0.310, 0.350 or 0.380. Since the first lens L1 has a negative refractive power and the second lens L2 has a positive refractive power, and when the above relationship is satisfied, SAG2 can be increased while ensuring aberration balance to enable the optical component 100 to achieve a wide-angle design; in addition, when the above relationship is satisfied, the bending angle of the light can also be adjusted to reduce the sensitivity of the second lens L2 to the optical component 100 and improve the production and processing yield.

[0098] In some embodiments, the optical component 100 satisfies the following relational expression:

[0099] 0.03 ≤ SAG11 / SD11 ≤ 0.26;

[0100] Wherein, SAG11 is the distance in the optical axis direction from the intersection of the image side S10 of the fifth lens L5 and the optical axis to the position of the maximum effective radius of the image side S10 of the fifth lens L5, and SD11 is the maximum effective semi-aperture of the image side S10 of the fifth lens L5. Specifically, SAG11 / SD11 can be 0.060, 0.065, 0.075, 0.090, 0.120, 0.150, 0.170, 0.185 or 0.190. When the above relationship is satisfied, the distortion generated by the optical system can be effectively reduced.

[0101] In some embodiments, the optical component 100 satisfies the following relational expression:

[0102] -4.0 ≤ TTL / f5 ≤ -0.5;

[0103] Wherein, TTL is the distance on the optical axis from the object side S1 of the first lens L1 to the image side S10 of the fifth lens L5, and f5 is the effective focal length of the fifth lens L5. Specifically, TTL / f5 can be -3.050, -3.000, -2.900, -2.500, -1.700, -1.500, -0.900, -0.850, -0.750, -0.700, -0.670. When the above relationship is satisfied, the total length of the optical component 100 can be effectively shortened and the aberration of the optical system can be corrected, improving the imaging quality.

[0104] First Embodiment

[0105] As Figure 1 In the first embodiment shown, the optical component 100 includes, in order from the object side to the image side, a first lens L1 with negative refractive power, a stop STO, a second lens L2 with positive refractive power, a third lens L3 with negative refractive power, a fourth lens L4 with positive refractive power, and a fifth lens L5 with negative refractive power. Figure 2 FIGS. are the spherical chromatic aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component 100 in the first embodiment, wherein the astigmatism diagram and the distortion diagram are data diagrams at the reference wavelength. The reference wavelength in each embodiment is 587 nm.

[0106] Among them, the object side surface S1 of the first lens L1 is concave at the paraxial region, and the image side surface S2 of the first lens L1 is concave at the paraxial region; the object side surface S1 of the first lens L1 is convex at the periphery, and the image side surface S2 of the first lens L1 is concave at the periphery. The object side surface S3 of the second lens L2 is convex at the paraxial region, and the image side surface S4 of the second lens L2 is convex at the paraxial region; the object side surface S3 of the second lens L2 is convex at the periphery, and the image side surface S4 of the second lens L2 is convex at the periphery. The object side surface S5 of the third lens L3 is convex at the paraxial region, and the image side surface S6 of the third lens L3 is concave at the paraxial region; the object side surface S5 of the third lens L3 is concave at the periphery, and the image side surface S6 of the third lens L3 is concave at the periphery. The object side surface S7 of the fourth lens L4 is concave at the paraxial region, and the image side surface S8 of the fourth lens L4 is convex at the paraxial region; the object side surface S7 of the fourth lens L4 is concave at the periphery, and the image side surface S8 of the fourth lens L4 is concave at the periphery. The object side surface S9 of the fifth lens L5 is convex at the paraxial region, and the image side surface S10 of the fifth lens L5 is concave at the paraxial region; the object side surface S9 of the fifth lens L5 is convex at the periphery, and the image side surface S10 of the fifth lens L5 is convex at the periphery.

[0107] 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 aspherical design 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 situation, thereby making the optical component 100 have a smaller volume.

[0108] 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 plastic lenses can reduce the weight of the optical component 100 and lower the cost.

[0109] In addition, an infrared filter 110 is provided on the image side of the fifth lens L5 to filter out infrared light and prevent the infrared light from reaching the photosensitive element.

[0110] The optical component 100 in the first embodiment satisfies the following relationships:

[0111] BFL / f4 = 0.447; where BFL is the shortest distance between the image side surface S10 of the fifth lens L5 and the imaging surface S13, and f4 is the effective focal length of the fourth lens L4. When the above relationship is satisfied, the shortest distance between the image side surface S10 of the fifth lens L5 and the imaging surface S13 can be effectively reduced, which is beneficial to the miniaturization design.

[0112] (TTL-CT24)*Imgh = 8.96; where TTL is the distance from the object side S1 of the first lens L1 to the imaging surface S13 on the optical axis, CT24 is the distance from the image side S2 of the first lens L1 to the object side S3 of the second lens L2 on the optical axis, and Imgh is half of the diagonal length of the effective pixel area on the imaging surface S13. The units of TTL, CT24, and Imgh are all mm. When light is transmitted from the first lens L1 to the second lens L2 while maintaining a certain height, the field of view angle of the optical component 100 will increase. Therefore, the shortening range of the air gap between the first lens L1 and the second lens L2 is limited. When the above relationship is satisfied, the lenses can be reasonably arranged by matching the distance between the first lens L1 and the second lens L2 and the overall optical length, improving the space utilization rate of the system and shortening the system length. Furthermore, the size of the optical component 100 can be reduced by adjusting the size of the pixel area on the imaging surface S13, reducing the difficulty of lens processing and forming, thereby increasing the production yield, and at the same time balancing the wide-angle property and miniaturization of the optical component 100.

[0113] CT24 / tan(HFOV) = 0.409; where CT24 is the distance from the image side S2 of the first lens L1 to the object side S3 of the second lens L2 on the optical axis, the unit of CT24 is mm, and HFOV is half of the maximum field of view angle of the optical component 100. When the above relationship is satisfied, the air gap distance between the first lens L1 and the second lens L2 is reasonably adjusted, so that the optical component 100 has a wide-angle characteristic and can coordinate the imaging quality and miniaturization design.

[0114] f / R2 = 0.321; where f is the effective focal length of the optical component 100 and R2 is the radius of curvature of the image side S2 of the first lens L1 at the paraxial position. When the above relationship is satisfied, the astigmatism can be effectively balanced, the imaging quality of the optical component 100 can be improved, and at the same time the effective focal length of the optical component 100 can be shortened, which is beneficial to realizing the wide-angle characteristic.

[0115] (V2 - V3) / f2 = 25.102; where V2 is the Abbe number of the second lens L2, V3 is the Abbe number of the third lens L3, and f2 is the effective focal length of the second lens L2. The unit of f2 is mm. When the above relationship is satisfied, the Abbe numbers of the second lens L2 and the third lens L3 can be reasonably arranged, and the effective focal length of the second lens L2 can be controlled, thereby correcting chromatic aberration and at the same time increasing the field of view angle of the second lens L2 to realize the wide-angle characteristic.

[0116] (R6 + R7) / (R6 - R7) = 1.984; where R6 is the paraxial curvature radius of the object side surface S5 of the third lens L3, and R7 is the paraxial curvature radius of the image side surface S6 of the third lens L3. When the above relationship is satisfied, the principal point of the third lens L3 shifts towards the image side, which is beneficial to increasing the field of view angle of the optical component 100.

[0117] f / CT411 = 0.653; where f is the effective focal length of the optical component 100, and CT411 is the distance on the optical axis from the object side surface S3 of the second lens L2 to the image side surface S10 of the fifth lens L5. When the above relationship is satisfied, the effective focal length of the optical component 100 is shortened, which is beneficial to the design of a large field of view angle, can effectively utilize the space, and makes the optical component 100 more compact while obtaining a larger imaging range.

[0118] |SAG4| / SAG2 = 0.387; where SAG2 is the distance in the optical axis direction from the intersection of the image side surface S2 of the first lens L1 and the optical axis to the position of the maximum effective radius of the image side surface S2 of the first lens L1, and SAG4 is the distance in the optical axis direction from the intersection of the object side surface S3 of the second lens L2 and the optical axis to the position of the maximum effective radius of the object side surface S3 of the second lens L2. Since the first lens L1 has a negative refractive power and the second lens L2 has a positive refractive power, and when the above relationship is satisfied, SAG2 can be increased while ensuring aberration balance to achieve a wide-angle design of the optical component 100; in addition, when the above relationship is satisfied, the bending angle of the light can also be adjusted to reduce the sensitivity of the second lens L2 to the optical component 100 and improve the production yield.

[0119] SAG11 / SD11 = 0.083; where SAG11 is the distance in the optical axis direction from the intersection of the image side surface S10 of the fifth lens L5 and the optical axis to the position of the maximum effective radius of the image side surface S10 of the fifth lens L5, and SD11 is the maximum effective semi-aperture of the image side surface S10 of the fifth lens L5. When the above relationship is satisfied, the distortion generated by the optical system can be effectively reduced.

[0120] In some embodiments, the optical component 100 satisfies the following relational expressions:

[0121] TTL / f5 = -2.176; where TTL is the distance on the optical axis from the object side surface S1 of the first lens L1 to the image side surface S10 of the fifth lens L5, and f5 is the effective focal length of the fifth lens L5. When the above relationship is satisfied, the total length of the optical component 100 can be effectively shortened and the aberration of the optical system can be corrected, improving the imaging quality.

[0122] In addition, the parameters of the optical component 100 are given in Table 1 and Table 2. The elements from the object surface to the imaging surface S13 are arranged in the order of the elements in Table 1 from top to bottom. The surface numbers 1 and 2 in Table 1 are the object side surface S1 and the image side surface S2 of the first lens L1, respectively. That is, in the same lens, the surface with a smaller surface number is the object side surface, and the surface with a larger surface number is the image side surface. The Y radius is the curvature radius of the object side surface or the image side surface corresponding to the respective surface numbers at the paraxial region. 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 on the optical axis from the image side surface of the lens to the object side surface of the subsequent lens. The value corresponding to the surface number 13 in the "thickness" parameter of the infrared filter 110 is the distance from the image side surface S12 of the infrared filter 110 to the imaging surface S13 (the image surface in Table 1). The K in Table 2 is the conic constant, and Ai is the coefficient corresponding to the i-th high-order term in the aspheric surface formula. Generally, the image surface in Table 1 is the photosensitive surface of the photosensitive element.

[0123] In addition, the refractive index and focal length of each lens are the values at the reference wavelength. The calculation of the relational expressions is based on the lens parameters (such as the data in Table 1) and the surface type parameters (such as the data in Table 2).

[0124] In the first embodiment, the effective focal length f of the optical component 100 is 1.65 mm, the f-number FNO is 2.29, half of the maximum field of view (diagonal view angle) HFOV is 58.8 degrees (deg.), and the distance TTL on the optical axis from the object side surface S1 of the first lens L1 to the imaging surface S13 is 4.57 mm.

[0125] Table 1

[0126]

[0127]

[0128] Table 2

[0129]

[0130] Second Embodiment

[0131] As Figure 3 shown in the second embodiment, the optical component 100 includes, in order from the object side to the image side, a first lens L1 with negative refractive power, a stop STO, a second lens L2 with positive refractive power, a third lens L3 with negative 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 optical component 100 in the second embodiment, where the astigmatism diagram and the distortion diagram are data diagrams at the reference wavelength.

[0132] Among them, the object side S1 of the first lens L1 is concave at the paraxial region, and the image side S2 of the first lens L1 is concave at the paraxial region; the object side S1 of the first lens L1 is convex at the circumference, and the image side S2 of the first lens L1 is concave at the circumference. The object side S3 of the second lens L2 is convex at the paraxial region, and the image side S4 of the second lens L2 is convex at the paraxial region; the object side S3 of the second lens L2 is convex at the circumference, and the image side S4 of the second lens L2 is convex at the circumference. The object side S5 of the third lens L3 is concave at the paraxial region, and the image side S6 of the third lens L3 is concave at the paraxial region; the object side S5 of the third lens L3 is concave at the circumference, and the image side S6 of the third lens L3 is convex at the circumference. The object side S7 of the fourth lens L4 is concave at the paraxial region, and the image side S8 of the fourth lens L4 is convex at the paraxial region; the object side S7 of the fourth lens L4 is convex at the circumference, and the image side S8 of the fourth lens L4 is concave at the circumference. The object side S9 of the fifth lens L5 is convex at the paraxial region, and the image side S10 of the fifth lens L5 is concave at the paraxial region; the object side S9 of the fifth lens L5 is concave at the circumference, and the image side S10 of the fifth lens L5 is convex at the circumference.

[0133] The object sides and image sides 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.

[0134] 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.

[0135] In the second embodiment, the effective focal length f of the optical component 100 is 1.27 mm, the f-number FNO is 2.29, half of the maximum field of view HFOV is 65 degrees (deg.), and the distance TTL from the object side S1 of the first lens L1 to the imaging surface S13 on the optical axis is 3.76 mm.

[0136] The parameters of the optical component 100 are given in Table 3 and Table 4, and the definitions of the parameters can be obtained from the first embodiment and will not be elaborated here.

[0137] Table 3

[0138]

[0139] Table 4

[0140]

[0141]

[0142] Based on the parameter information provided above, the following relationships can be deduced:

[0143]

[0144] Third Embodiment

[0145] As Figure 5 In the third embodiment as shown, the optical component 100 sequentially includes, from the object side to the image side, a first lens L1 with negative refractive power, a stop STO, a second lens L2 with positive refractive power, a third lens L3 with negative refractive power, a fourth lens L4 with positive refractive power, and a fifth lens L5 with negative refractive power. Figure 6 Figs. are the spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component 100 in the third embodiment, where the astigmatism diagram and distortion diagram are data diagrams at the reference wavelength.

[0146] Among them, the object side surface S1 of the first lens L1 is concave at the paraxial region, and the image side surface S2 of the first lens L1 is concave at the paraxial region; the object side surface S1 of the first lens L1 is convex at the circumference, and the image side surface S2 of the first lens L1 is concave at the circumference. The object side surface S3 of the second lens L2 is concave at the paraxial region, and the image side surface S4 of the second lens L2 is convex at the paraxial region; the object side surface S3 of the second lens L2 is convex at the circumference, and the image side surface S4 of the second lens L2 is convex at the circumference. The object side surface S5 of the third lens L3 is convex at the paraxial region, and the image side surface S6 of the third lens L3 is concave at the paraxial region; the object side surface S5 of the third lens L3 is concave at the circumference, and the image side surface S6 of the third lens L3 is convex at the circumference. The object side surface S7 of the fourth lens L4 is concave at the paraxial region, and the image side surface S8 of the fourth lens L4 is convex at the paraxial region; the object side surface S7 of the fourth lens L4 is concave at the circumference, and the image side surface S8 of the fourth lens L4 is concave at the circumference. The object side surface S9 of the fifth lens L5 is convex at the paraxial region, and the image side surface S10 of the fifth lens L5 is concave at the paraxial region; the object side surface S9 of the fifth lens L5 is concave at the circumference, and the image side surface S10 of the fifth lens L5 is convex at the circumference.

[0147] 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.

[0148] 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.

[0149] In the third embodiment, the effective focal length f of the optical component 100 is 1.33 mm, the f-number FNO is 2.6, half of the maximum field of view HFOV is 63.5 degrees (deg.), and the distance TTL from the object side surface S1 of the first lens L1 to the imaging surface S13 on the optical axis is 3.95 mm.

[0150] The parameters of the optical component 100 are given in Table 5 and Table 6, and the definitions of the parameters can be obtained from the first embodiment, which will not be elaborated here.

[0151] Table 5

[0152]

[0153] Table 6

[0154]

[0155]

[0156] Based on the parameter information provided above, the following relationships can be deduced:

[0157]

[0158] Fourth Embodiment

[0159] As Figure 7 shown in the fourth embodiment, the optical component 100 sequentially includes, from the object side to the image side, a first lens L1 with negative refractive power, a stop STO, a second lens L2 with positive refractive power, a third lens L3 with negative refractive power, a fourth lens L4 with positive refractive power, and a fifth lens L5 with negative refractive power. Figure 8 are the spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component 100 in the fourth embodiment, where the astigmatism diagram and distortion diagram are data diagrams at the reference wavelength.

[0160] Among them, the object side surface S1 of the first lens L1 is concave at the paraxial region, and the image side surface S2 of the first lens L1 is concave at the paraxial region; the object side surface S1 of the first lens L1 is convex at the circumference, and the image side surface S2 of the first lens L1 is concave at the circumference. The object side surface S3 of the second lens L2 is convex at the paraxial region, and the image side surface S4 of the second lens L2 is convex at the paraxial region; the object side surface S3 of the second lens L2 is convex at the circumference, and the image side surface S4 of the second lens L2 is convex at the circumference. The object side surface S5 of the third lens L3 is convex at the paraxial region, and the image side surface S6 of the third lens L3 is concave at the paraxial region; the object side surface S5 of the third lens L3 is concave at the circumference, and the image side surface S6 of the third lens L3 is convex at the circumference. The object side surface S7 of the fourth lens L4 is convex at the paraxial region, and the image side surface S8 of the fourth lens L4 is convex at the paraxial region; the object side surface S7 of the fourth lens L4 is concave at the circumference, and the image side surface S8 of the fourth lens L4 is concave at the circumference. The object side surface S9 of the fifth lens L5 is convex at the paraxial region, and the image side surface S10 of the fifth lens L5 is concave at the paraxial region; the object side surface S9 of the fifth lens L5 is convex at the circumference, and the image side surface S10 of the fifth lens L5 is concave at the circumference.

[0161] 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.

[0162] 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.

[0163] In the fourth embodiment, the effective focal length f of the optical component 100 is 1.12 mm, the f-number FNO is 2.29, half of the maximum field of view HFOV is 67.4 degrees (deg.), and the distance TTL from the object side S1 of the first lens L1 to the imaging surface S13 on the optical axis is 3.7 mm.

[0164] The parameters of the optical component 100 are given in Tables 7 and 8, and the definitions of the parameters can be obtained from the first embodiment, which will not be elaborated here.

[0165] Table 7

[0166]

[0167]

[0168] Table 8

[0169]

[0170] Based on the parameter information provided above, the following relationships can be deduced:

[0171]

[0172] Fifth Embodiment

[0173] As Figure 9 shown in the fifth embodiment, the optical component 100 sequentially includes a first lens L1 with negative refractive power, a stop STO, a second lens L2 with positive 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 image side. Figure 10 is the spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component 100 in the fifth embodiment, where the astigmatism diagram and the distortion diagram are data diagrams at the reference wavelength.

[0174] Among them, the object side S1 of the first lens L1 is concave at the paraxial region, and the image side S2 of the first lens L1 is concave at the paraxial region; the object side S1 of the first lens L1 is convex at the periphery, and the image side S2 of the first lens L1 is concave at the periphery. The object side S3 of the second lens L2 is convex at the paraxial region, and the image side S4 of the second lens L2 is convex at the paraxial region; the object side S3 of the second lens L2 is concave at the periphery, and the image side S4 of the second lens L2 is convex at the periphery. The object side S5 of the third lens L3 is convex at the paraxial region, and the image side S6 of the third lens L3 is concave at the paraxial region; the object side S5 of the third lens L3 is concave at the periphery, and the image side S6 of the third lens L3 is convex at the periphery. The object side S7 of the fourth lens L4 is concave at the paraxial region, and the image side S8 of the fourth lens L4 is convex at the paraxial region; the object side S7 of the fourth lens L4 is concave at the periphery, and the image side S8 of the fourth lens L4 is concave at the periphery. The object side S9 of the fifth lens L5 is convex at the paraxial region, and the image side S10 of the fifth lens L5 is concave at the paraxial region; the object side S9 of the fifth lens L5 is concave at the periphery, and the image side S10 of the fifth lens L5 is convex at the periphery.

[0175] The object sides and image sides 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.

[0176] 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.

[0177] In the fifth embodiment, the effective focal length f of the optical component 100 is 1.2 mm, the f-number FNO is 2.22, half of the maximum field of view HFOV is 66 degrees (deg.), and the distance TTL from the object side S1 of the first lens L1 to the imaging surface S13 on the optical axis is 3.69 mm.

[0178] The parameters of the optical component 100 are given in Table 9 and Table 10, and the definitions of the parameters can be obtained from the first embodiment, which will not be elaborated here.

[0179] Table 9

[0180]

[0181] Table 10

[0182]

[0183]

[0184] According to the parameter information provided above, the following relationships can be deduced:

[0185]

[0186] Sixth Embodiment

[0187] As Figure 11 In the sixth embodiment as shown, the optical component 100 sequentially includes, from the object side to the image side, a first lens L1 with negative refractive power, a stop STO, a second lens L2 with positive 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 12 FIG. is the spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component 100 in the sixth embodiment, where the astigmatism diagram and distortion diagram are data diagrams at the reference wavelength.

[0188] Among them, the object side surface S1 of the first lens L1 is concave at the paraxial region, and the image side surface S2 of the first lens L1 is concave at the paraxial region; the object side surface S1 of the first lens L1 is convex at the circumference, and the image side surface S2 of the first lens L1 is concave at the circumference. The object side surface S3 of the second lens L2 is convex at the paraxial region, and the image side surface S4 of the second lens L2 is convex at the paraxial region; the object side surface S3 of the second lens L2 is concave at the circumference, and the image side surface S4 of the second lens L2 is convex at the circumference. The object side surface S5 of the third lens L3 is concave at the paraxial region, and the image side surface S6 of the third lens L3 is convex at the paraxial region; the object side surface S5 of the third lens L3 is concave at the circumference, and the image side surface S6 of the third lens L3 is convex at the circumference. The object side surface S7 of the fourth lens L4 is concave at the paraxial region, and the image side surface S8 of the fourth lens L4 is convex at the paraxial region; the object side surface S7 of the fourth lens L4 is concave at the circumference, and the image side surface S8 of the fourth lens L4 is concave at the circumference. The object side surface S9 of the fifth lens L5 is convex at the paraxial region, and the image side surface S10 of the fifth lens L5 is concave at the paraxial region; the object side surface S9 of the fifth lens L5 is concave at the circumference, and the image side surface S10 of the fifth lens L5 is convex at the circumference.

[0189] 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.

[0190] 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.

[0191] In the sixth embodiment, the effective focal length f of the optical component 100 is 1.5 mm, the f-number FNO is 2.13, half of the maximum field of view angle HFOV is 61.2 degrees (deg.), and the distance TTL from the object side surface S1 of the first lens L1 to the imaging surface S13 on the optical axis is 3.82 mm.

[0192] The parameters of the optical component 100 are given in Tables 11 and 12, and the definitions of the parameters can be obtained from the first embodiment and will not be elaborated here.

[0193] Table 11

[0194]

[0195] Table 12

[0196]

[0197]

[0198] Based on the parameter information provided above, the following relationships can be deduced:

[0199]

[0200] The Seventh Embodiment

[0201] As Figure 13 shown in the seventh embodiment, the optical component 100 sequentially includes, from the object side to the image side, a first lens L1 with negative refractive power, a stop STO, a second lens L2 with positive refractive power, a third lens L3 with negative refractive power, a fourth lens L4 with positive refractive power, and a fifth lens L5 with negative refractive power. Figure 14 are the spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component 100 in the seventh embodiment, where the astigmatism diagram and distortion diagram are data diagrams at the reference wavelength.

[0202] Among them, the object side surface S1 of the first lens L1 is convex at the paraxial region, and the image side surface S2 of the first lens L1 is concave at the paraxial region; the object side surface S1 of the first lens L1 is convex at the circumference, and the image side surface S2 of the first lens L1 is concave at the circumference. The object side surface S3 of the second lens L2 is convex at the paraxial region, and the image side surface S4 of the second lens L2 is convex at the paraxial region; the object side surface S3 of the second lens L2 is convex at the circumference, and the image side surface S4 of the second lens L2 is convex at the circumference. The object side surface S5 of the third lens L3 is convex at the paraxial region, and the image side surface S6 of the third lens L3 is concave at the paraxial region; the object side surface S5 of the third lens L3 is concave at the circumference, and the image side surface S6 of the third lens L3 is concave at the circumference. The object side surface S7 of the fourth lens L4 is concave at the paraxial region, and the image side surface S8 of the fourth lens L4 is convex at the paraxial region; the object side surface S7 of the fourth lens L4 is convex at the circumference, and the image side surface S8 of the fourth lens L4 is concave at the circumference. The object side surface S9 of the fifth lens L5 is convex at the paraxial region, and the image side surface S10 of the fifth lens L5 is concave at the paraxial region; the object side surface S9 of the fifth lens L5 is concave at the circumference, and the image side surface S10 of the fifth lens L5 is convex at the circumference.

[0203] 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.

[0204] 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.

[0205] In the seventh embodiment, the effective focal length f of the optical component 100 is 0.98 mm, the f-number FNO is 1.98, half of the maximum field of view angle HFOV is 70 degrees (deg.), and the distance TTL from the object side S1 of the first lens L1 to the imaging surface S13 on the optical axis is 3.67 mm.

[0206] The parameters of the optical component 100 are given in Table 13 and Table 14, and the definitions of the parameters can be obtained from the first embodiment and will not be elaborated here.

[0207] Table 13

[0208]

[0209]

[0210] Table 14

[0211]

[0212] According to the parameter information provided above, the following relationships can be deduced:

[0213]

[0214]

[0215] Reference Figure 15 , in some embodiments, the optical component 100 and the photosensitive element 210 are assembled to form an imaging module 200, and the photosensitive element 210 is disposed on the image side of the fifth lens L5 in the optical component 100. In addition, during the assembly process, the infrared filter 110 can be disposed on the image side of the fifth lens L5 in the optical component 100. The photosensitive element 210 can be a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor). By using the optical component 100 of the present application, the imaging module 200 can achieve a miniaturized design.

[0216] In some embodiments, the distance between the photosensitive element 210 and each lens in the optical assembly 100 is relatively fixed. At this time, the imaging module 200 is a fixed-focus module. In other embodiments, a voice coil motor can be provided to enable the photosensitive element 210 to move relative to each lens in the optical assembly 100, thereby realizing the focusing function. Specifically, the voice coil motor can drive the lens barrel loaded with each lens of the optical assembly 100 to move to realize the above-mentioned focusing function. Alternatively, each lens in the optical assembly 100 can be assembled in a lens barrel, and the voice coil motor drives the lens barrel to make each lens move relative to the photosensitive element 210 to realize the focusing function.

[0217] The imaging module 200 can be applied to electronic devices with a camera function, such as smart phones, tablet computers, vehicles (such as intelligent driving), aerial photography, game consoles, PDAs (Personal Digital Assistants), and household electrical appliances. Specifically, referring to Figure 16 , when the imaging module 200 is applied to the smart phone 10, the imaging module 200 can be used as the front camera module of the smart phone 10. At this time, the imaging module 200 can be a fixed-focus module. When the imaging module 200 is used as the rear camera module of the smart phone 10, the imaging module 200 can be a focusable module.

[0218] 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 described in this specification.

[0219] The above-described embodiments only 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 should be subject to the appended claims.

Claims

1. An optical component, characterized in that, it has a total of five lenses with refractive power, which successively include from the object side to the image side: a first lens with negative refractive power, the image side of the first lens is concave at the paraxial region; a diaphragm; a second lens with positive refractive power, the image side of the second lens is convex at the paraxial region; a third lens with refractive power; a fourth lens with positive refractive power, the image side of the fourth lens is convex at the paraxial region; a fifth lens with negative refractive power, the object side of the fifth lens is convex at the paraxial region, the image side of the fifth lens is concave at the paraxial region, and at least one of the object side and the image side of the fifth lens is an aspherical surface; the optical component satisfies the following relational expressions: 0.3 ≤ BFL / f4 ≤ 0.85; FNO ≤ 2.6; 0.03 ≤ SAG11 / SD11 ≤ 0.26; wherein, BFL is the shortest distance between the image side of the fifth lens and the imaging surface, f4 is the effective focal length of the fourth lens, FNO is the f-number of the optical component, SAG11 is the distance in the optical axis direction from the intersection point of the image side of the fifth lens and the optical axis to the position of the maximum effective radius of the image side of the fifth lens, and SD11 is the maximum effective semi-aperture of the image side of the fifth lens.

2. The optical component according to claim 1, characterized in that, it satisfies the following relational expression: 6.3 ≤ (TTL - CT24)*Imgh ≤ 9.5; wherein, TTL is the distance on the optical axis from the object side of the first lens to the imaging surface, CT24 is the distance on the optical axis from the image side of the first lens to the object side of the second lens, and Imgh is half of the diagonal length of the effective pixel region on the imaging surface.

3. The optical component according to claim 1, characterized in that, it satisfies the following relational expression: 0.12 ≤ CT24 / tan(HFOV) ≤ 0.47; wherein, CT24 is the distance on the optical axis from the image side of the first lens to the object side of the second lens, the unit of CT24 is mm, and HFOV is half of the maximum field of view angle of the optical component.

4. The optical component according to claim 1, characterized in that, it satisfies the following relational expression: 0.13 ≤ f / R2 ≤ 1.00; wherein, f is the effective focal length of the optical component, and R2 is the curvature radius of the image side of the first lens at the paraxial region.

5. The optical component according to claim 1, characterized in that, it satisfies the following relational expression: 15 ≤ (V2 - V3) / f2 ≤ 32; wherein, V2 is the Abbe number of the second lens, V3 is the Abbe number of the third lens, f2 is the effective focal length of the second lens, and the unit of f2 is mm.

6. The optical component according to claim 1, characterized in that, it satisfies the following relational expression: -1.4 ≤ (R6 + R7) / (R6 - R7) ≤ 13.0; wherein, R6 is the curvature radius of the object side of the third lens at the paraxial region, and R7 is the curvature radius of the image side of the third lens at the paraxial region.

7. The optical component according to claim 1, characterized in that, it satisfies the following relational expression: 0.40 ≤ f / CT411 ≤ 1.15; wherein, f is the effective focal length of the optical component, and CT411 is the distance on the optical axis from the object side surface of the second lens to the image side surface of the fifth lens.

8. The optical component according to claim 1, characterized in that it satisfies the following relationship: 0.014 ≤ |SAG4| / SAG2 ≤ 0.500; wherein, SAG2 is the distance on the optical axis from the intersection point of the image side surface of the first lens and the optical axis to the position of the maximum effective radius of the image side surface of the first lens, and SAG4 is the distance on the optical axis from the intersection point of the object side surface of the second lens and the optical axis to the position of the maximum effective radius of the object side surface of the second lens.

9. The optical component according to claim 1, characterized in that it satisfies the following relationship: 1.98 ≤ FNO ≤ 2.

6.

10. The optical component according to claim 1, characterized in that it satisfies the following relationship: -4.0 ≤ TTL / f5 ≤ -0.5; wherein, TTL is the distance on the optical axis from the object side surface of the first lens to the imaging surface, and f5 is the effective focal length of the fifth lens.

11. An imaging module, characterized in that it includes a photosensitive element and the optical component according to any one of claims 1 to 10, and the photosensitive element is disposed on the image side of the optical component.

12. An electronic device, characterized in that it includes the imaging module according to claim 11.

Images