Optical Component, Imaging Module and Mobile Terminal

Abstract

The present invention relates to an optical component, an imaging module, and a mobile terminal. The optical component sequentially includes, from the object side to the image side, a first lens with positive refractive power, the object side surface of the first lens being convex at the optical axis; a second lens with negative refractive power, the image side surface of the second lens being concave at the optical axis; a third lens with positive refractive power, the image side surface of the third lens being convex at the optical axis; a fourth lens with refractive power; a fifth lens with refractive power; a sixth lens with refractive power; a seventh lens with negative refractive power, the image side surface of the seventh lens being concave at the optical axis, and there being at least one inflection point on the image side surface of the seventh lens, and both the object side surface and the image side surface of the seventh lens being aspherical; the optical component also satisfies the relationship: f / EPD < 2.0. When the above relationship is satisfied, the optical component has the characteristic of a large light transmission amount.

Description

Technical Field

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

[0002] With the development of portable electronic products such as smart phones and tablet computers, the market's requirements for the miniaturization and imaging quality of camera lenses on portable electronic products have gradually increased. Among them, the photosensitive elements generally used for obtaining images are usually charge-coupled devices (CCDs) or complementary metal oxide semiconductor sensors (CMOS). However, the imaging quality of general photosensitive elements will significantly decline in environments with insufficient light such as dusk and rainy days. Therefore, there is an urgent need for a camera lens with a large light transmission amount. Summary of the Invention

[0003] Based on this, in view of the problem of how to achieve a large light transmission amount, it is necessary to provide an optical component, an imaging module, and a mobile terminal.

[0004] An optical component, sequentially including from the object side to the image side:

[0005] A first lens with positive refractive power, the object side surface of the first lens is convex at the optical axis;

[0006] A second lens with negative refractive power, the image side surface of the second lens is concave at the optical axis;

[0007] A third lens with positive refractive power, the image side surface of the third lens is convex at the optical axis;

[0008] A fourth lens with refractive power;

[0009] A fifth lens with refractive power;

[0010] A sixth lens with refractive power;

[0011] A seventh lens with negative refractive power, the image side surface of the seventh lens is concave at the optical axis, and there is at least one inflection point on the image side surface of the seventh lens, and both the object side surface and the image side surface of the seventh lens are aspherical surfaces;

[0012] The optical component also satisfies the following relationship:

[0013] f / EPD < 2.0;

[0014] Wherein, f is the total effective focal length of the optical component, and EPD is the entrance pupil diameter of the optical component.

[0015] When the relationship of f / EPD is satisfied, under the specification of the same total effective focal length, the optical component has a larger entrance pupil diameter (light passing aperture), so as to have the characteristic of large light passing amount, thereby improving the imaging quality in environments with insufficient light such as dusk and rainy days. In addition, since the optical component has a larger entrance pupil diameter, correspondingly, the effective semi-aperture of the object side of the first lens is also enlarged, so that the optical component has a larger light passing amount.

[0016] In one embodiment, the optical component satisfies the following relationship:

[0017] 1.50 < SD72 / SD11 < 3.00;

[0018] Wherein, SD11 is the distance (effective semi-aperture) from the maximum effective diameter of the object side of the first lens to the optical axis, and SD72 is the distance from the maximum effective diameter of the image side of the seventh lens to the optical axis.

[0019] When the relationship of SD72 / SD11 is satisfied, the ratio of the effective semi-aperture of the image side of the seventh lens to the effective semi-aperture of the object side of the first lens can be restricted, preventing the effective semi-aperture of the image side of the seventh lens from being too large. Since the seventh lens is closer to the imaging surface than other lenses, this can reduce the outer diameter of the seventh lens while satisfying the large light passing amount (when packaged and formed with the photosensitive chip, the module volume of the seventh lens to the photosensitive chip part can be reduced), thereby realizing the miniaturized design of the optical component. Synchronously, when the effective semi-aperture of the object side of the first lens is enlarged, the effective semi-aperture of the image side of the seventh lens also becomes larger accordingly, thereby improving the relative illuminance of the off-axis field of view. When the relationship of SD72 / SD11 is lower than the lower limit, the effective semi-aperture of the image side of the seventh lens is excessively compressed, making the marginal rays easy to be blocked and the relative illuminance of the off-axis field of view reduced, thereby reducing the imaging quality of the peripheral image; when the relationship of SD72 / SD11 is higher than the upper limit, the effective semi-aperture of the image side of the seventh lens is too large, making the angle (CRA) of the light rays in the off-axis field of view incident on the imaging surface easy to increase, which is not conducive to matching with the conventional photosensitive chip, the resolution is reduced, and when the effective semi-aperture of the image side of the seventh lens is too large, it will cause the outer diameter of the seventh lens to increase, which is not conducive to the miniaturized design.

[0020] In one embodiment, the optical component satisfies the following relationship:

[0021] f2 / f1 < -1.00;

[0022] Among them, f1 is the focal length of the first lens, and f2 is the focal length of the second lens. The first lens provides a strong positive refractive power, and the second lens is reasonably configured with negative refractive power. When the above relationship is satisfied, the optical component can correct part of the spherical aberration generated by the first lens and improve the imaging quality. In addition, sufficient positive refractive power can be configured at the object side end (the first lens and the second lens) of the optical component, so that the optical component has a better ability to balance field curvature and helps to compress the length of the optical component in the optical axis direction.

[0023] In one embodiment, the optical component satisfies the following relationship:

[0024] 0 < f123 / f < 2.00;

[0025] Among them, f123 is the combined focal length of the first lens, the second lens, and the third lens. Satisfying the above relational expression can optimize the cooperation of the refractive powers of the first lens, the second lens, and the third lens. The first lens provides positive refractive power, the second lens provides negative refractive power to correct spherical aberration, and the third lens cooperates with the first lens to provide positive refractive power, thereby effectively controlling the deflection angle of light and reducing the sensitivity of the optical component. In addition, the combination of the three lenses is equivalent to a lens with positive refractive power. In addition to being able to configure sufficient refractive power at the object side end for imaging, the second lens with negative refractive power can also be used to correct spherical aberration to improve the imaging quality.

[0026] In one embodiment, the optical component satisfies the following relationship:

[0027] 1.20 < TTL / ImgH < 2.00;

[0028] Among them, ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the optical component, and TTL is the distance from the object side surface of the first lens to the imaging surface of the optical component on the optical axis. When forming a module with chips of the same size (the same imaging area), the optical component that satisfies the above ratio relationship can effectively compress the length of the module in the optical axis direction, thereby realizing a miniaturized design. In addition, when the ratio is lower than the lower limit, the thickness of each lens will be overly compressed, which is not conducive to actual production and processing; when the ratio is higher than the upper limit, it will cause the length of the module in the optical axis direction to be too long, which is not conducive to miniaturized design.

[0029] In one embodiment, the optical component satisfies the following relationship:

[0030] -15.00 < (R22 + R31) / (R22 - R31) < 0;

[0031] Wherein, R22 is the curvature radius of the image side surface of the second lens on the optical axis, and R31 is the curvature radius of the object side surface of the third lens on the optical axis. When the above relationships are satisfied, the curvature radii of the image side surface of the second lens and the object side surface of the third lens on the optical axis can be reasonably configured, thereby effectively reducing the deflection angle of the light when it exits the first lens and then enters the second lens, reducing the sensitivity of the optical component, and effectively suppressing the generation of ghost images.

[0032] In one embodiment, the optical component satisfies the following relationship:

[0033] 3.00 < f / R72 < 4.00;

[0034] Wherein, R72 is the curvature radius of the image side surface of the seventh lens on the optical axis. The image side surface of the seventh lens has a tendency to change from concave to convex from the optical axis to the circumference. This change trend can better balance the chromatic aberration of the off-axis field of view. And when the above relationship is satisfied, the ratio of the total effective focal length f to R72 can be reasonably configured, so that the astigmatism contribution rate of the seventh lens is within a reasonable range, enabling the optical component to obtain good imaging quality.

[0035] In one embodiment, the optical component satisfies the following relationship:

[0036] 2.00 < CT1 / CT2 < 4.00;

[0037] Wherein, CT1 is the thickness of the first lens on the optical axis, and CT2 is the thickness of the second lens on the optical axis. When the above relationship is satisfied, the central thicknesses of the first lens and the second lens can be optimized, shortening the length of the optical component in the optical axis direction, and facilitating the processing and forming of the first lens and the second lens, ensuring the stability of the forming.

[0038] In one embodiment, the optical component satisfies the following relationship:

[0039] 0.05 ≤ (T34 + T56) / TTL ≤ 0.15;

[0040] Wherein, T34 is the distance between the third lens and the fourth lens on the optical axis, T56 is the distance between the fifth lens and the sixth lens on the optical axis, and TTL is the distance from the object side surface of the first lens to the imaging surface of the optical component on the optical axis. When the above relationship is satisfied, the distances between the above lenses can be reasonably configured, thereby effectively compressing the length of the optical component in the optical axis direction, and while meeting the high resolution, the optical component is also conducive to production and assembly.

[0041] An imaging module includes an image sensor and the optical component described in any of the above embodiments, and the image sensor is disposed on the image side of the optical component.

[0042] A mobile terminal includes the imaging module described in the above embodiments. Description of the Drawings

[0043] Figure 1 Schematic diagram of the optical component provided by the first embodiment of the present invention;

[0044] Figure 2 Spherical chromatic aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component in the first embodiment;

[0045] Figure 3 Schematic diagram of the optical component provided by the second embodiment of the present invention;

[0046] Figure 4 Spherical chromatic aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component in the second embodiment;

[0047] Figure 5 Schematic diagram of the optical component provided by the third embodiment of the present invention;

[0048] Figure 6 Spherical chromatic aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component in the third embodiment;

[0049] Figure 7 Schematic diagram of the optical component provided by the fourth embodiment of the present invention;

[0050] Figure 8 Spherical chromatic aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component in the fourth embodiment;

[0051] Figure 9 Schematic diagram of the optical component provided by the fifth embodiment of the present invention;

[0052] Figure 10 Spherical chromatic aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component in the fifth embodiment;

[0053] Figure 11 Schematic diagram of the optical component provided by the sixth embodiment of the present invention;

[0054] Figure 12 Spherical chromatic aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component in the sixth embodiment;

[0055] Figure 13 Schematic diagram of the optical component provided by the seventh embodiment of the present invention;

[0056] Figure 14 Spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component in the seventh embodiment;

[0057] Figure 15 Schematic diagram of an image pickup module provided by an embodiment of the present invention;

[0058] Figure 16 Schematic diagram of a mobile terminal provided by an embodiment of the present invention. Detailed implementation manners

[0059] 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.

[0060] 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 only for illustrative purposes.

[0061] 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 invention herein are only for the purpose of describing specific embodiments 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.

[0062] Reference Figure 1 As shown, the optical component 10 in the embodiment of the present application is sequentially provided with a first lens L1 having a positive refractive power, a second lens L2 having a negative refractive power, a third lens L3 having a positive refractive power, a fourth lens L4 having a refractive power, a fifth lens L5 having a refractive power, a sixth lens L6 having a refractive power, and a seventh lens L7 having a negative refractive power from the object side to the image side.

[0063] In some embodiments, a stop ST0 is further disposed on the object side of the first lens L1. By disposing the stop ST0 on the object side of the first lens L1, the exit pupil can be made far from the imaging surface, and the effective diameter of the optical component 10 can be reduced without reducing the decentration of the optical component 10, thereby achieving miniaturization. In some embodiments, the stop ST0 is fixedly disposed on 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, realizing a miniaturized design.

[0064] The first lens L1 includes an object side surface S2 and an image side surface S3, the second lens L2 includes an object side surface S4 and an image side surface S5, 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, the fifth lens L5 includes an object side surface S10 and an image side surface S11, the sixth lens L6 includes an object side surface S12 and an image side surface S13, and the seventh lens L7 includes an object side surface S14 and an image side surface S15.

[0065] Specifically, the object side surface S2 of the first lens L1 is convex at the optical axis, the image side surface S5 of the second lens L2 is concave at the optical axis, the image side surface S7 of the third lens L3 is convex at the optical axis, the image side surface S15 of the seventh lens L7 is concave at the optical axis, and there is at least one inflection point on the image side surface S15 of the seventh lens L7. At the same time, both the object side surface S14 and the image side surface S15 of the seventh lens L7 are aspherical surfaces. The aspherical design can solve the problem of vision distortion, and can also enable the lens to achieve excellent optical effects in a smaller, thinner and flatter situation, thereby making the optical component 10 thinner and lighter. In some embodiments, the surface shape of the image side surface S15 of the seventh lens L7 has a changing trend from concave to convex from the optical axis to the circumference.

[0066] The image light rays of the object to be measured located on the object side of the first lens L1 sequentially pass through the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the seventh lens L7, and finally form an image on the imaging surface S18.

[0067] In addition, the aspherical surface shape formulas of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the seventh lens L7 are:

[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 shape formula.

[0070] In some embodiments, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all plastics. At this time, the plastic lenses can reduce the weight of the optical component 10 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, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all glass. At this time, the optical component 10 can withstand higher temperatures and has better optical performance. In other embodiments, only the first lens L1 can be made of glass, while the other lenses are made of plastics. At this time, the first lens L1 closest to the object side can better withstand the influence of the environmental temperature on the object side, and due to the other lenses being made of plastics, the optical component 10 can maintain a lower production cost.

[0071] In some embodiments, the optical component 10 is provided with an infrared filter 110 made of glass. The infrared filter 110 is disposed on the image side of the seventh lens L7. The infrared filter 110 includes an object side surface S16 and an image side surface S17. The infrared filter 110 is used to filter the imaging light, specifically to isolate infrared light to prevent the infrared light from reaching the imaging surface S18, thereby preventing the infrared light from affecting the color and clarity of the normal image and improving the imaging quality of the optical component 10.

[0072] In some embodiments, the optical component 10 satisfies the following relationship:

[0073] f / EPD < 2.0;

[0074] Wherein, f is the total effective focal length of the optical component 10, EPD is the entrance pupil diameter of the optical component 10, SD11 is the distance of the maximum effective diameter of the object side surface S2 of the first lens L1 relative to the optical axis, and SD72 is the distance of the maximum effective diameter of the image side surface S15 of the seventh lens L7 relative to the optical axis. In some of these embodiments, f / EPD can be 1.47, 1.50, 1.55, 1.60, 1.64, 1.70, 1.75, 1.80, or 1.85. When the above f / EPD relationship is satisfied, under the same total effective focal length specification, the optical component 10 has a larger entrance pupil diameter (light passing aperture) to have the characteristic of a large light passing amount, thereby improving the imaging quality in environments with insufficient light such as at dusk and on rainy and cloudy days. In addition, due to the optical component 10 having a larger entrance pupil diameter, correspondingly, the effective semi-aperture of the object side surface S2 of the first lens L1 is also enlarged, making the optical component 10 have a larger light passing amount.

[0075] In some of these embodiments, the optical component 10 satisfies the following relationship:

[0076] 1.50 < SD72 / SD11 < 3.00;

[0077] Among them, SD11 is the distance (effective semi-aperture) from the optical axis at the maximum effective diameter of the object side S2 of the first lens L1, and SD72 is the distance from the optical axis at the maximum effective diameter of the image side S15 of the seventh lens L7. In some embodiments, SD72 / SD11 can be 2.10, 2.20, 2.30, 2.40, 2.50 or 2.60. When the above relationship of SD72 / SD11 is satisfied, the ratio of the effective semi-aperture of the image side S15 of the seventh lens L7 to the effective semi-aperture of the object side S2 of the first lens L1 can also be restricted, preventing the effective semi-aperture of the image side S15 of the seventh lens L7 from being too large. And since the seventh lens L7 is closer to the imaging surface than other lenses, this can reduce the outer diameter of the seventh lens L7 while meeting the requirement of a large light throughput (when packaged and formed with the photosensitive chip, the module volume of the seventh lens L7 to the photosensitive chip part can be reduced), thereby realizing the miniaturized design of the optical component 10. Synchronously, when the effective semi-aperture of the object side S2 of the first lens L1 is enlarged, the effective semi-aperture of the image side S15 of the seventh lens L7 also becomes larger accordingly, thereby improving the relative illuminance of the off-axis field of view. When the relationship of SD72 / SD11 is lower than the lower limit, the effective semi-aperture of the image side S15 of the seventh lens L7 is overly compressed, making it easy for marginal rays to be blocked and the relative illuminance of the off-axis field of view to decrease, thereby reducing the imaging quality of the peripheral image; when the relationship of SD72 / SD11 is higher than the upper limit, the effective semi-aperture of the image side S15 of the seventh lens L7 is too large, making it easy for the angle (CRA) of the light rays in the off-axis field of view incident on the imaging surface to increase, which is not conducive to matching with a conventional photosensitive chip, the resolution decreases, and when the effective semi-aperture of the image side S15 of the seventh lens L7 is too large, it will cause the outer diameter of the seventh lens L7 to increase, which is not conducive to the miniaturized design.

[0078] In some embodiments, the optical component 10 satisfies the following relationship:

[0079] f2 / f1 < -1.00;

[0080] Among them, f1 is the focal length of the first lens L1, and f2 is the focal length of the second lens L2. In some embodiments, f2 / f1 can be -3.70, -3.60, -3.50, -3.40, -2.50, -2.00, -1.90 or -1.80. The first lens L1 provides a strong positive refractive power, and the second lens L2 is reasonably configured with a negative refractive power. When the above relationship is satisfied, the optical component 10 can correct some of the spherical aberration generated by the first lens L1 and improve the imaging quality; in addition, sufficient positive refractive power can be configured at the object side end (the first lens L1 and the second lens L2) of the optical component 10, enabling the optical component 10 to have a better ability to balance field curvature and helping to compress the length of the optical component 10 in the optical axis direction.

[0081] In some of these embodiments, the optical component 10 satisfies the following relationship:

[0082] 0 < f123 / f < 2.00;

[0083] where f123 is the combined focal length of the first lens L1, the second lens L2, and the third lens L3. In some of these embodiments, f123 / f can be 1.00, 1.02, 1.05, 1.08, 1.10, 1.12, 1.14, or 1.16. Satisfying the above relational expression can optimize the cooperation of the refractive powers of the first lens L1, the second lens L2, and the third lens L3, thereby effectively controlling the deflection angle of light and reducing the sensitivity of the optical component 10; in addition, while balancing aberrations, sufficient refractive power can also be configured at the object side end (the first lens L1, the second lens L2, and the third lens L3) to improve the imaging quality.

[0084] In some of these embodiments, the optical component 10 satisfies the following relationship:

[0085] 1.20 < TTL / ImgH < 2.00;

[0086] where ImgH is half of the diagonal length of the effective pixel region of the optical component 10 on the imaging surface S18, and TTL is the distance from the object side surface S2 of the first lens L1 to the imaging surface S18 of the optical component 10 on the optical axis. In some of these embodiments, TTL / ImgH can be 1.46, 1.47, 1.48, 1.49, or 1.50. When forming a module with chips of the same size (the same imaging area), the optical component 10 that satisfies the above ratio relationship can effectively compress the length of the module in the optical axis direction, thereby achieving a miniaturized design. In addition, when the ratio is lower than the lower limit, the thicknesses of the lenses will be overly compressed, which is not conducive to actual production and processing; when the ratio is higher than the upper limit, it will result in an overly long length of the module in the optical axis direction, which is not conducive to miniaturized design.

[0087] In some of these embodiments, the optical component 10 satisfies the following relationship:

[0088] -15.00 < (R22 + R31) / (R22 - R31) < 0;

[0089] Wherein, R22 is the radius of curvature of the image side surface S5 of the second lens L2 at the optical axis, and R31 is the radius of curvature of the object side surface S6 of the third lens L3 at the optical axis. In some embodiments, (R22 + R31) / (R22 - R31) can be -14.00, -13.00, -12.00, -11.00, -9.00, -8.00, -2.00 or -1.00. When the above relationship is satisfied, the radii of curvature of the image side surface S5 of the second lens L2 and the object side surface S6 of the third lens L3 at the optical axis can be reasonably configured, so as to effectively reduce the deflection angle of the light when it exits the first lens L1 and then enters the second lens L2, reduce the sensitivity of the optical assembly 10, and effectively suppress the generation of ghost images.

[0090] In some embodiments, the optical assembly 10 satisfies the following relationship:

[0091] 3.00 < f / R72 < 4.00;

[0092] Wherein, R72 is the radius of curvature of the image side surface S15 of the seventh lens L7 at the optical axis. In some embodiments, f / R72 can be 3.20, 3.30, 3.40, 3.50, 3.60, 3.70 or 3.80. The image side surface S15 of the seventh lens L7 has a tendency to change from concave to convex from the optical axis to the circumference. This change trend can better balance the chromatic aberration of the off-axis field of view. When the above relationship is satisfied, the ratio of f (total effective focal length) to R72 (the radius of curvature of the image side surface S15 of the seventh lens L7 at the optical axis) can be reasonably configured, so that the astigmatism contribution rate of the seventh lens L7 is within a reasonable range, and the optical assembly 10 obtains good imaging quality.

[0093] In some embodiments, the optical assembly 10 satisfies the following relationship:

[0094] 2.00 < CT1 / CT2 < 4.00;

[0095] Wherein, CT1 is the thickness of the first lens L1 on the optical axis, and CT2 is the thickness of the second lens L2 on the optical axis. In some embodiments, CT1 / CT2 can be 2.40, 2.60, 2.90, 3.20, 3.40 or 3.50. When the above relationship is satisfied, the central thicknesses of the first lens L1 and the second lens L2 can be optimized, the length of the optical assembly 10 in the optical axis direction can be shortened, and it is beneficial to the processing and forming of the first lens L1 and the second lens L2, ensuring the stability of the forming.

[0096] In some embodiments, the optical assembly 10 satisfies the following relationship:

[0097] 0.05 ≤ (T34 + T56) / TTL ≤ 0.15;

[0098] Among them, T34 is the distance between the third lens L3 and the fourth lens L4 on the optical axis, T56 is the distance between the fifth lens L5 and the sixth lens L6 on the optical axis, and TTL is the distance between the object side surface S2 of the first lens L1 and the imaging surface S18 of the optical component 10 on the optical axis. In some embodiments, (T34 + T56) / TTL can be 0.09, 0.10, 0.11, 0.12 or 0.13. When the above relationship is satisfied, the distances between the above lenses (the third lens L3 and the fourth lens L4 and the fifth lens L5 and the sixth lens L6) can be reasonably configured, so as to effectively compress the length of the optical component 10 in the optical axis direction, and while satisfying high resolution, the optical component 10 is also conducive to production and processing.

[0099] First Embodiment

[0100] As Figure 1 In the first embodiment shown, the optical component 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, a fifth lens L5 with positive refractive power, a sixth lens L6 with negative refractive power, a seventh lens L7 with negative refractive power, and an infrared filter 110 from the object side to the image side. Figure 2 Figures are the spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component 10 in the first embodiment, and the astigmatism diagram and distortion diagram are data diagrams at the reference wavelength.

[0101] Among them, the object side S2 of the first lens L1 is convex at the optical axis, and the image side S3 of the first lens L1 is concave at the optical axis; the object side S2 of the first lens L1 is convex at the circumference, and the image side S3 of the first lens L1 is convex at the circumference. The object side S4 of the second lens L2 is convex at the optical axis, and the image side S5 of the second lens L2 is concave at the optical axis; the object side S4 of the second lens L2 is convex at the circumference, and the image side S5 of the second lens L2 is concave at the circumference. The object side S6 of the third lens L3 is convex at the optical axis, and the image side S7 of the third lens L3 is convex at the optical axis; the object side S6 of the third lens L3 is concave at the circumference, and the image side S7 of the third lens L3 is convex at the circumference. The object side S8 of the fourth lens L4 is concave at the optical axis, and the image side S9 of the fourth lens L4 is convex at the optical axis; the object side S8 of the fourth lens L4 is concave at the circumference, and the image side S9 of the fourth lens L4 is convex at the circumference. The object side S10 of the fifth lens L5 is convex at the optical axis, and the image side S11 of the fifth lens L5 is concave at the optical axis; the object side S10 of the fifth lens L5 is concave at the circumference, and the image side S11 of the fifth lens L5 is convex at the circumference. The object side S12 of the sixth lens L6 is convex at the optical axis, and the image side S13 of the sixth lens L6 is concave at the optical axis; the object side S12 of the sixth lens L6 is concave at the circumference, and the image side S13 of the sixth lens L6 is convex at the circumference. The object side S14 of the seventh lens L7 is convex at the optical axis, and the image side S15 of the seventh lens L7 is concave at the optical axis; the object side S14 of the seventh lens L7 is concave at the circumference, and the image side S15 of the seventh lens L7 is convex at the circumference.

[0102] The object sides and image sides of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all aspherical surfaces.

[0103] In addition, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all plastics.

[0104] Specifically, the optical component 10 satisfies the following relationships:

[0105] f / EPD = 1.59;

[0106] SD72 / SD11 = 2.30;

[0107] Among them, f is the total effective focal length of the optical component 10, EPD is the entrance pupil diameter of the optical component 10, SD11 is the distance from the maximum effective diameter of the object side S2 of the first lens L1 to the optical axis, and SD72 is the distance from the maximum effective diameter of the image side S15 of the seventh lens L7 to the optical axis.

[0108] When the relationship of f / EPD is satisfied, under the specification of the same total effective focal length, the optical component 10 has a larger entrance pupil diameter (light passing aperture), so as to have the characteristic of a large light passing amount, thereby improving the imaging quality in environments with insufficient light such as dusk and rainy days. In addition, since the optical component 10 has a larger entrance pupil diameter, correspondingly, the effective semi-aperture of the object side surface S2 of the first lens L1 is also enlarged, so as to cooperate with the aperture stop to make the optical component 10 have a larger light passing amount; synchronously, the effective semi-aperture of the image side surface S15 of the seventh lens L7 also becomes larger accordingly, thereby improving the relative illuminance of the off-axis field of view. In addition, when the relationship of SD72 / SD11 is satisfied, the ratio of the effective semi-aperture of the image side surface S15 of the seventh lens L7 to the effective semi-aperture of the object side surface S2 of the first lens L1 can be restricted, preventing the effective semi-aperture of the image side surface S15 of the seventh lens L7 from being too large, and since the seventh lens L7 is closer to the imaging surface than other lenses, this can reduce the outer diameter of the seventh lens L7 while satisfying a large light passing amount (when packaged and formed with the photosensitive chip, the module volume of the seventh lens L7 to the photosensitive chip part can be reduced), thereby realizing the miniaturized design of the optical component 10.

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

[0110] f2 / f1 = -1.99;

[0111] Among them, f1 is the focal length of the first lens L1, and f2 is the focal length of the second lens L2. The first lens L1 provides a strong positive refractive power, and the second lens L2 is reasonably configured with a negative refractive power. When the above relationship is satisfied, the optical component 10 can correct part of the spherical aberration generated by the first lens L1 and improve the imaging quality; in addition, sufficient positive refractive power can be configured at the object side end (the first lens L1 and the second lens L2) of the optical component 10, so that the optical component 10 has a better ability to balance field curvature, and helps to compress the length of the optical component 10 in the optical axis direction.

[0112] The optical component 10 satisfies the following relationship:

[0113] f123 / f = 1.04;

[0114] Among them, f123 is the combined focal length of the first lens L1, the second lens L2, and the third lens L3. Satisfying the above relational expression can optimize the cooperation of the refractive powers of the first lens L1, the second lens L2, and the third lens L3, thereby effectively controlling the deflection angle of light and reducing the sensitivity of the optical component 10; in addition, while balancing aberrations, sufficient refractive power can be configured at the object side end (the first lens L1, the second lens L2, and the third lens L3) to improve the imaging quality.

[0115] The optical component 10 satisfies the following relationship:

[0116] TTL / ImgH = 1.47;

[0117] where ImgH is half of the diagonal length of the effective pixel region of the optical component 10 on the imaging surface S18, and TTL is the distance from the object side surface S2 of the first lens L1 to the imaging surface S18 of the optical component 10 on the optical axis. When matching chips of the same size (same imaging area) to form a module, the optical component 10 that satisfies the above ratio relationship can effectively compress the length of the module in the optical axis direction, thereby achieving a miniaturized design.

[0118] The optical component 10 satisfies the following relationship:

[0119] (R22 + R31) / (R22 - R31) = -13.17;

[0120] where R22 is the curvature radius of the image side surface S5 of the second lens L2 on the optical axis, and R31 is the curvature radius of the object side surface S6 of the third lens L3 on the optical axis. When the above relationship is satisfied, the curvature radii of the image side surface S5 of the second lens L2 and the object side surface S6 of the third lens L3 on the optical axis can be reasonably configured, thereby effectively reducing the deflection angle of the light when it exits the first lens L1 and then enters the second lens L2, reducing the sensitivity of the optical component 10, and effectively suppressing the generation of ghost images.

[0121] The optical component 10 satisfies the following relationship:

[0122] f / R72 = 3.36;

[0123] where R72 is the curvature radius of the image side surface S15 of the seventh lens L7 on the optical axis. The image side surface S15 of the seventh lens L7 has a tendency to change from concave to convex from the optical axis to the circumference. This change trend can better balance the chromatic aberration of the off-axis field of view, and when the above relationship is satisfied, the ratio of f (total effective focal length) to R72 (the curvature radius of the image side surface S15 of the seventh lens L7 on the optical axis) can be reasonably configured, so that the astigmatism contribution rate of the seventh lens L7 is within a reasonable range, enabling the optical component 10 to obtain good imaging quality.

[0124] The optical component 10 satisfies the following relationship:

[0125] CT1 / CT2 = 2.37;

[0126] Among them, CT1 is the thickness of the first lens L1 on the optical axis, and CT2 is the thickness of the second lens L2 on the optical axis. When the above relationships are satisfied, the central thicknesses of the first lens L1 and the second lens L2 can be optimized, the length of the optical component 10 in the optical axis direction can be shortened, and it is beneficial to the processing and forming of the first lens L1 and the second lens L2, ensuring the stability of the forming.

[0127] The optical component 10 satisfies the following relationship:

[0128] (T34 + T56) / TTL = 0.12;

[0129] Among them, T34 is the distance between the third lens L3 and the fourth lens L4 on the optical axis, T56 is the distance between the fifth lens L5 and the sixth lens L6 on the optical axis, and TTL is the distance between the object side surface S2 of the first lens L1 and the imaging surface S18 of the optical component 10 on the optical axis. When the above relationships are satisfied, the distances between the above lenses (the third lens L3 and the fourth lens L4 and the fifth lens L5 and the sixth lens L6) can be reasonably configured, so as to effectively compress the length of the optical component 10 in the optical axis direction, and while meeting the high resolution, the optical component 10 is also beneficial to production and processing.

[0130] In the first embodiment, the total effective focal length f of the optical component 10 is 4.08 mm, the aperture value FNO is 1.59, the maximum field of view FOV is 80.2 degrees (deg.), and the distance TTL between the object side surface S2 of the first lens L1 and the imaging surface S18 on the optical axis is 5.17 mm.

[0131] In addition, the parameters of the optical component 10 are given in Table 1 and Table 2. The elements from the object surface to the imaging surface S18 are arranged in the order of the elements in Table 1 from top to bottom. 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 Y radius in Table 1 is the curvature radius of the object side surface or the image side surface corresponding to the respective surface numbers at the optical axis. The value in the "thickness" parameter column of the aperture stop ST0 is the distance on the optical axis from the aperture stop ST0 to the vertex of the object side surface S2 of the first lens L1 (the vertex refers to the intersection point of the lens and the optical axis). We default that the direction from the object side surface of the first lens to the image side surface of the last lens is the positive direction of the optical axis. When this value is negative, it indicates that the aperture stop ST0 is set on the right side of the vertex of the object side surface S2 of the first lens L1. If the thickness of the aperture stop STO is positive, the aperture stop is on the left side of the vertex of the object side surface of the first lens. 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 this lens to the object side surface of the subsequent lens. The value corresponding to the surface number 17 in the "thickness" parameter of the infrared filter 110 is the distance on the optical axis from the image side surface S17 of the infrared filter 110 to the imaging surface S18. Table 2 is a table of the relevant parameters of the aspherical surfaces of the respective lenses in Table 1, where K is the conic constant and Ai is the coefficient corresponding to the i-th high-order term in the aspherical surface formula.

[0132] In addition, in the following respective embodiments, the refractive index and Abbe number of each lens are the values at the reference wavelength.

[0133] Table 1

[0134]

[0135]

[0136] Table 2

[0137]

[0138] Second Embodiment

[0139] As Figure 3 shown in the second embodiment, the optical component 10 includes, in order from the object side to the image side, an aperture 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, a fifth lens L5 with positive refractive power, a sixth lens L6 with negative refractive power, a seventh lens L7 with negative refractive power, and an infrared filter 110. Figure 4 are the spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component 10 in the second embodiment, where the astigmatism diagram and the distortion diagram are data diagrams at the reference wavelength.

[0140] Among them, the object side S2 of the first lens L1 is convex at the optical axis, and the image side S3 of the first lens L1 is concave at the optical axis; the object side S2 of the first lens L1 is convex at the circumference, and the image side S3 of the first lens L1 is convex at the circumference. The object side S4 of the second lens L2 is convex at the optical axis, and the image side S5 of the second lens L2 is concave at the optical axis; the object side S4 of the second lens L2 is convex at the circumference, and the image side S5 of the second lens L2 is concave at the circumference. The object side S6 of the third lens L3 is convex at the optical axis, and the image side S7 of the third lens L3 is convex at the optical axis; the object side S6 of the third lens L3 is concave at the circumference, and the image side S7 of the third lens L3 is convex at the circumference. The object side S8 of the fourth lens L4 is concave at the optical axis, and the image side S9 of the fourth lens L4 is convex at the optical axis; the object side S8 of the fourth lens L4 is concave at the circumference, and the image side S9 of the fourth lens L4 is convex at the circumference. The object side S10 of the fifth lens L5 is convex at the optical axis, and the image side S11 of the fifth lens L5 is concave at the optical axis; the object side S10 of the fifth lens L5 is concave at the circumference, and the image side S11 of the fifth lens L5 is convex at the circumference. The object side S12 of the sixth lens L6 is convex at the optical axis, and the image side S13 of the sixth lens L6 is concave at the optical axis; the object side S12 of the sixth lens L6 is concave at the circumference, and the image side S13 of the sixth lens L6 is convex at the circumference. The object side S14 of the seventh lens L7 is convex at the optical axis, and the image side S15 of the seventh lens L7 is concave at the optical axis; the object side S14 of the seventh lens L7 is concave at the circumference, and the image side S15 of the seventh lens L7 is convex at the circumference.

[0141] The object sides and image sides of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all aspherical surfaces.

[0142] In addition, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all plastics.

[0143] In the second embodiment, the total effective focal length f of the optical component 10 is 4.27 mm, the aperture value FNO is 1.65, the maximum field of view FOV is 77.2 degrees (deg.), and the distance TTL from the object side S2 of the first lens L1 to the imaging surface S18 on the optical axis is 5.25 mm.

[0144] In addition, the parameters of the optical component 10 are given in Table 3 and Table 4, and the definitions of the parameters are the same as those in the first embodiment, which will not be elaborated here.

[0145] Table 3

[0146]

[0147] Table 4

[0148]

[0149]

[0150] Based on the above-provided parameter information, the following data can be deduced:

[0151]

[0152] Third Embodiment

[0153] As Figure 5 In the third embodiment shown, the optical component 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, a fifth lens L5 with positive refractive power, a sixth lens L6 with negative refractive power, a seventh lens L7 with negative refractive power, and an infrared filter 110 from the object side to the image side. Figure 6 Are the spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component 10 in the third embodiment, where the astigmatism diagram and distortion diagram are data diagrams at the reference wavelength.

[0154] Among them, the object side S2 of the first lens L1 is convex at the optical axis, and the image side S3 of the first lens L1 is concave at the optical axis; the object side S2 of the first lens L1 is convex at the circumference, and the image side S3 of the first lens L1 is convex at the circumference. The object side S4 of the second lens L2 is convex at the optical axis, and the image side S5 of the second lens L2 is concave at the optical axis; the object side S4 of the second lens L2 is convex at the circumference, and the image side S5 of the second lens L2 is concave at the circumference. The object side S6 of the third lens L3 is convex at the optical axis, and the image side S7 of the third lens L3 is convex at the optical axis; the object side S6 of the third lens L3 is concave at the circumference, and the image side S7 of the third lens L3 is convex at the circumference. The object side S8 of the fourth lens L4 is concave at the optical axis, and the image side S9 of the fourth lens L4 is convex at the optical axis; the object side S8 of the fourth lens L4 is concave at the circumference, and the image side S9 of the fourth lens L4 is convex at the circumference. The object side S10 of the fifth lens L5 is convex at the optical axis, and the image side S11 of the fifth lens L5 is concave at the optical axis; the object side S10 of the fifth lens L5 is concave at the circumference, and the image side S11 of the fifth lens L5 is convex at the circumference. The object side S12 of the sixth lens L6 is convex at the optical axis, and the image side S13 of the sixth lens L6 is concave at the optical axis; the object side S12 of the sixth lens L6 is concave at the circumference, and the image side S13 of the sixth lens L6 is convex at the circumference. The object side S14 of the seventh lens L7 is convex at the optical axis, and the image side S15 of the seventh lens L7 is concave at the optical axis; the object side S14 of the seventh lens L7 is concave at the circumference, and the image side S15 of the seventh lens L7 is convex at the circumference.

[0155] The object sides and image sides of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all aspherical surfaces.

[0156] In addition, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all plastics.

[0157] In the third embodiment, the total effective focal length f of the optical component 10 is 4.29 mm, the aperture value FNO is 1.78, the maximum field of view FOV is 78 degrees (deg.), and the distance TTL from the object side S2 of the first lens L1 to the imaging surface S18 on the optical axis is 5.2 mm.

[0158] In addition, the parameters of the optical component 10 are given in Tables 5 and 6, and the definitions of the parameters are the same as those in the first embodiment, which will not be elaborated here.

[0159] Table 5

[0160]

[0161] Table 6

[0162]

[0163]

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

[0165]

[0166] Fourth Embodiment

[0167] As Figure 7 shown in the fourth embodiment, the optical component 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, a fifth lens L5 with positive refractive power, a sixth lens L6 with positive refractive power, a seventh lens L7 with negative refractive power, and an infrared filter 110 from the object side to the image side. Figure 8 are the spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component 10 in the fourth embodiment, where the astigmatism diagram and distortion diagram are data diagrams at the reference wavelength.

[0168] 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 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 convex at the circumference, and the image side surface S9 of the fourth lens L4 is concave 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. The object side surface S12 of the sixth lens L6 is convex at the optical axis, and the image side surface S13 of the sixth lens L6 is convex at the optical axis; the object side surface S12 of the sixth lens L6 is concave at the circumference, and the image side surface S13 of the sixth lens L6 is convex at the circumference. The object side surface S14 of the seventh lens L7 is convex at the optical axis, and the image side surface S15 of the seventh lens L7 is concave at the optical axis; the object side surface S14 of the seventh lens L7 is concave at the circumference, and the image side surface S15 of the seventh lens L7 is convex at the circumference.

[0169] 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, the fifth lens L5, the sixth lens L6 and the seventh lens L7 are all aspherical surfaces.

[0170] In addition, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the seventh lens L7 are all plastics.

[0171] In the fourth embodiment, the total effective focal length f of the optical component 10 is 4.25 mm, the aperture value FNO is 1.44, the maximum field of view FOV is 77 degrees (deg.), and the distance TTL from the object side surface S2 of the first lens L1 to the imaging surface S18 on the optical axis is 5.25 mm.

[0172] In addition, the parameters of the optical component 10 are given in Tables 7 and 8, and the definitions of the parameters are the same as those in the first embodiment, and will not be elaborated here.

[0173] Table 7

[0174]

[0175] Table 8

[0176]

[0177]

[0178] Based on the parameter information provided above, the following data can be deduced:

[0179]

[0180] Fifth Embodiment

[0181] As Figure 9 shown in the fifth embodiment, the optical component 10 includes, in order from the object side to the image side, 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, a fifth lens L5 with positive refractive power, a sixth lens L6 with negative refractive power, a seventh lens L7 with negative refractive power, and an infrared filter 110. Figure 10 are the spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component 10 in the fifth embodiment, where the astigmatism diagram and distortion diagram are data diagrams at the reference wavelength.

[0182] 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 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 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 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. The object side surface S12 of the sixth lens L6 is convex at the optical axis, and the image side surface S13 of the sixth lens L6 is concave at the optical axis; the object side surface S12 of the sixth lens L6 is concave at the circumference, and the image side surface S13 of the sixth lens L6 is convex at the circumference. The object side surface S14 of the seventh lens L7 is convex at the optical axis, and the image side surface S15 of the seventh lens L7 is concave at the optical axis; the object side surface S14 of the seventh lens L7 is concave at the circumference, and the image side surface S15 of the seventh lens L7 is convex at the circumference.

[0183] 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, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all aspherical surfaces.

[0184] In addition, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all plastics.

[0185] In the fifth embodiment, the total effective focal length f of the optical component 10 is 4.35 mm, the aperture value FNO is 1.9, the maximum field of view FOV is 76.2 degrees (deg.), and the distance TTL from the object side surface S2 of the first lens L1 to the imaging surface S18 on the optical axis is 5.3 mm.

[0186] In addition, the parameters of the optical component 10 are given in Tables 9 and 10, and the definitions of the parameters are the same as those in the first embodiment, and will not be elaborated here.

[0187] Table 9

[0188]

[0189] Table 10

[0190]

[0191]

[0192] Based on the parameter information provided above, the following data can be deduced:

[0193]

[0194] Sixth Embodiment

[0195] As Figure 11 shown in the sixth embodiment, the optical component 10 includes, in order from the object side to the image side, 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, a fifth lens L5 with negative refractive power, a sixth lens L6 with positive refractive power, a seventh lens L7 with negative refractive power, and an infrared filter 110. Figure 12 are the spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component 10 in the sixth embodiment, where the astigmatism diagram and distortion diagram are data diagrams at the reference wavelength.

[0196] 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 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 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 convex at the circumference, and the image side surface S9 of the fourth lens L4 is concave 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. The object side surface S12 of the sixth lens L6 is convex at the optical axis, and the image side surface S13 of the sixth lens L6 is convex at the optical axis; the object side surface S12 of the sixth lens L6 is concave at the circumference, and the image side surface S13 of the sixth lens L6 is convex at the circumference. The object side surface S14 of the seventh lens L7 is convex at the optical axis, and the image side surface S15 of the seventh lens L7 is concave at the optical axis; the object side surface S14 of the seventh lens L7 is convex at the circumference, and the image side surface S15 of the seventh lens L7 is convex at the circumference.

[0197] 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, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all aspherical surfaces.

[0198] In addition, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all plastics.

[0199] In the sixth embodiment, the total effective focal length f of the optical component 10 is 4.2 mm, the aperture value FNO is 1.7, the maximum field of view FOV is 78 degrees (deg.), and the distance TTL from the object side surface S2 of the first lens L1 to the imaging surface S18 on the optical axis is 5.12 mm.

[0200] In addition, the parameters of the optical component 10 are given in Table 11 and Table 12, and the definitions of the parameters are the same as those in the first embodiment, which will not be elaborated here.

[0201] Table 11

[0202]

[0203]

[0204] Table 12

[0205]

[0206]

[0207] Based on the above-provided parameter information, the following data can be deduced:

[0208]

[0209] The seventh embodiment

[0210] As Figure 13 In the seventh embodiment shown, the optical component 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, a fifth lens L5 with positive refractive power, a sixth lens L6 with positive refractive power, a seventh lens L7 with negative refractive power, and an infrared filter 110 from the object side to the image side. Figure 14 Are the spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the optical component 10 in the seventh embodiment, where the astigmatism diagram and distortion diagram are data diagrams at the reference wavelength.

[0211] Among them, the object side S2 of the first lens L1 is convex at the optical axis, and the image side S3 of the first lens L1 is concave at the optical axis; the object side S2 of the first lens L1 is convex at the circumference, and the image side S3 of the first lens L1 is convex at the circumference. The object side S4 of the second lens L2 is convex at the optical axis, and the image side S5 of the second lens L2 is concave at the optical axis; the object side S4 of the second lens L2 is convex at the circumference, and the image side S5 of the second lens L2 is concave at the circumference. The object side S6 of the third lens L3 is concave at the optical axis, and the image side S7 of the third lens L3 is convex at the optical axis; the object side S6 of the third lens L3 is concave at the circumference, and the image side S7 of the third lens L3 is convex at the circumference. The object side S8 of the fourth lens L4 is concave at the optical axis, and the image side S9 of the fourth lens L4 is convex at the optical axis; the object side S8 of the fourth lens L4 is convex at the circumference, and the image side S9 of the fourth lens L4 is concave at the circumference. The object side S10 of the fifth lens L5 is convex at the optical axis, and the image side S11 of the fifth lens L5 is concave at the optical axis; the object side S10 of the fifth lens L5 is concave at the circumference, and the image side S11 of the fifth lens L5 is convex at the circumference. The object side S12 of the sixth lens L6 is convex at the optical axis, and the image side S13 of the sixth lens L6 is convex at the optical axis; the object side S12 of the sixth lens L6 is concave at the circumference, and the image side S13 of the sixth lens L6 is convex at the circumference. The object side S14 of the seventh lens L7 is convex at the optical axis, and the image side S15 of the seventh lens L7 is concave at the optical axis; the object side S14 of the seventh lens L7 is concave at the circumference, and the image side S15 of the seventh lens L7 is convex at the circumference.

[0212] The object sides and image sides of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all aspherical surfaces.

[0213] In addition, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all plastics.

[0214] In the seventh embodiment, the total effective focal length f of the optical component 10 is 4.24 mm, the aperture value FNO is 1.58, the maximum field of view FOV is 77.6 degrees (deg.), and the distance TTL from the object side S2 of the first lens L1 to the imaging surface S18 on the optical axis is 5.14 mm.

[0215] In addition, the parameters of the optical component 10 are given in Table 13 and Table 14, and the definitions of the parameters are the same as those in the first embodiment, so they will not be elaborated here.

[0216] Table 13

[0217]

[0218]

[0219] Table 14

[0220]

[0221] Based on the above-provided parameter information, the following data can be deduced:

[0222]

[0223] As Figure 15 shown, in some embodiments, the imaging module 20 includes an optical component 10 and an image sensor chip 210 disposed on the image side of the optical component 10. Specifically, in some embodiments, the image sensor chip 210 is disposed on the imaging surface S18 of the optical component 10. In some embodiments, the image sensor chip 210 can be a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor). After adopting the optical component 10, the imaging module 20 has a larger light passing aperture to obtain a larger light passing amount, and still has good imaging quality in the case of insufficient ambient light.

[0224] The light carrying the image information of the object to be measured enters the optical component 10 from the object side of the optical component 10, and successively passes through the aperture ST0, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, and the infrared filter 110, and then reaches the image sensor 210 and is received by the image sensor 210. At this time, the image information is converted from an optical signal into an electrical signal, and the electrical signal is transmitted to the image processor through a circuit board electrically connected to the image sensor chip 210.

[0225] In some embodiments, the imaging module 20 further includes a fixing member for fixing the optical component 10 and the image sensor chip 210. The optical component 10 and the image sensor chip 210 are relatively disposed in the fixing member by dispensing. In some embodiments, the fixing member has an integral structure, and the optical component 10 and the image sensor 210 are relatively fixedly disposed. At this time, the imaging module 20 is a fixed-focus camera module.

[0226] In some embodiments, the fixing member includes an independent first fixing member and a second fixing member. The first fixing member fixes the optical component 10, and the second fixing member fixes the photosensitive chip 210. In some of these embodiments, the first fixing member and the second fixing member are relatively fixedly arranged, that is, the optical component 10 and the photosensitive chip 210 are relatively fixed. At this time, the imaging module 20 can be used as a fixed-focus camera module. In other embodiments, a voice coil motor is further provided in the imaging module 20. The voice coil motor is respectively connected to the first fixing member and the second fixing member, so that the first fixing member can move relative to the second fixing member. Thus, the optical component 10 can move relative to the photosensitive chip 210 under the action of the voice coil motor, and further the imaging module 20 has a focusing function.

[0227] As Figure 16 shown, the imaging module 20 can be applied to the mobile terminal 30. The mobile terminal 30 can be a miniaturized smart phone, a camera phone, a digital camera, a game console, a tablet computer, a PC and other electronic devices, or a camera lens in a household appliance product with a camera function added. In some embodiments, the imaging module 20 can be used as a front camera or a rear camera of the mobile terminal 30.

[0228] 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 embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered that the scope described in this specification.

[0229] 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 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 seven lenses with refractive power, which successively include from the object side to the image side: 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 refractive power, the object side surface of the fifth lens is convex at the optical axis, and the image side surface of the second lens is concave at the optical axis; a sixth lens with refractive power, the object side surface of the sixth lens is convex at the optical axis; a seventh lens with negative refractive power, the object side surface of the seventh lens is convex at the optical axis, the image side surface of the seventh lens is concave at the optical axis, and there is at least one inflection point on the image side surface of the seventh lens, and both the object side surface and the image side surface of the seventh lens are aspherical surfaces; the optical component also satisfies the following relationships: 1.44 ≤ f / EPD < 2.0; 1.20 < TTL / ImgH ≤ 1.51; wherein, f is the total effective focal length of the optical component, EPD is the entrance pupil diameter of the optical component; ImgH is half of the diagonal length of the effective pixel area of the optical component on the imaging surface, and TTL is the distance from the object side surface of the first lens to the imaging surface of the optical component on the optical axis.

2. The optical component according to claim 1, characterized in that, the optical component satisfies the following relationship: 2.00 ≤ SD72 / SD11 < 3.00; wherein, SD11 is the distance of the maximum effective diameter of the object side surface of the first lens relative to the optical axis, and SD72 is the distance of the maximum effective diameter of the image side surface of the seventh lens relative to the optical axis.

3. The optical component according to claim 1, characterized in that, the optical component satisfies the following relationship: -3.71 ≤ f2 / f1 < -1.00; wherein, f1 is the focal length of the first lens, and f2 is the focal length of the second lens.

4. The optical component according to claim 1, characterized in that, the optical component satisfies the following relationship: 0.99 ≤ f123 / f < 2.00; wherein, f123 is the combined focal length of the first lens, the second lens and the third lens.

5. The optical component as claimed in claim 1, characterized in that, the optical component satisfies the following relationship: 1.44 ≤ TTL / ImgH ≤ 1.

51.

6. The optical component as claimed in claim 1, characterized in that, the optical component satisfies the following relationship: -15.00 < (R22 + R31) / (R22 - R31) < 0; wherein, R22 is the radius of curvature of the image side surface of the second lens at the optical axis, and R31 is the radius of curvature of the object side surface of the third lens at the optical axis.

7. The optical component according to claim 1, characterized in that, the optical component satisfies the following relationship: 3.00 < f / R72 < 4.00; wherein, R72 is the radius of curvature of the image side surface of the seventh lens at the optical axis.

8. The optical component according to claim 1, characterized in that, the optical component satisfies the following relationship: 2.00 < CT1 / CT2 < 4.00; wherein, CT1 is the thickness of the first lens on the optical axis, and CT2 is the thickness of the second lens on the optical axis.

9. The optical component according to claim 1, characterized in that, the optical component satisfies the following relationship: 0.05 ≤ (T34 + T56) / TTL ≤ 0.15; wherein, T34 is the distance between the third lens and the fourth lens on the optical axis, T56 is the distance between the fifth lens and the sixth lens on the optical axis, and TTL is the distance on the optical axis from the object side surface of the first lens to the imaging surface of the optical component.

10. An imaging module, characterized in that, it includes a photosensitive element and the optical component according to any one of claims 1 to 9, and the photosensitive element is disposed on the image side of the optical component.

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

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