Shooting optical lens and lens assembly

Abstract

The utility model relates to the field of optical lenses, and discloses a camera shooting optical lens and a lens assembly. The camera shooting optical lens comprises seven lenses which are sequentially a first lens with positive refraction power, a second lens with negative refraction power, a third lens with negative refraction power, a fourth lens with positive refraction power, a fifth lens with negative refraction power and a sixth lens with positive refraction power from an object side to an image side, and a seventh lens element with negative refractive power; the distortion of the shooting optical lens at a 1.0 field of view is DIST1.0 H, the distortion of the shooting optical lens at a 0.8 field of view is DIST0.8 H, the distortion of the shooting optical lens at a 0.6 field of view is DIST0.6 H, the distortion of the shooting optical lens at a 0.5 field of view is DIST0.5 H, and the distortion of the shooting optical lens at a 0.3 field of view is DIST0.3 H. The combined focal length of the first lens, the second lens, the third lens, the fourth lens and the fifth lens is f12345, and the combined focal length of the sixth lens and the seventh lens is f67. The following relational expression is satisfied: (DIST0. 8H-DIST0. 5H) / (DIST0. 5H-DIST0. 3H) is more than or equal to 0.40 and less than or equal to 1.60; 0.13 < = (DIST1.0 H-DIST0.8 H) / (DIST0.8 H-DIST0.6 H) < = 2.50; and 0.25 < = f12345 / f67 < = 2.40.

Description

Technical Field

[0001] The utility model relates to the field of optical lenses, and in particular to a camera optical lens and lens assembly suitable for portable terminal equipment such as smart phones and digital cameras, as well as camera devices such as monitors, PC lenses, and vehicle-mounted lenses. Background Art

[0002] In recent years, with the rise of various smart devices, the demand for miniaturized camera optical lenses has been increasing. Due to the shrinking pixel size of photosensitive devices and the trend towards lightweight, portable electronic products with high functionality, miniaturized camera optical lenses with excellent imaging quality have become the mainstream in the market. To achieve optimal imaging quality, multi-element lens structures are often used. Furthermore, with technological advancements and increasing user demands, as the pixel size of photosensitive devices continues to shrink and the system's requirements for imaging quality continue to increase, seven-element lens structures are gradually emerging in lens designs. There is an urgent need for wide-angle camera lenses and lens assemblies that possess excellent optical characteristics, good processability, and sufficient aberration compensation. Utility Model Content

[0003] In view of the above problems, the purpose of the present invention is to provide a camera optical lens that has good optical performance while meeting the design requirements of small aberration, high image quality, easy processing and convenient post-image distortion adjustment.

[0004] To achieve the above-mentioned object, the technical solution of the present utility model provides an optical camera lens, the optical camera lens comprising a total of seven lenses, the seven lenses being, from the object side to the image side, in order: a first lens having positive refractive power, a second lens having negative refractive power, a third lens having negative refractive power, a fourth lens having positive refractive power, a fifth lens having negative refractive power, a sixth lens having positive refractive power, and a seventh lens having negative refractive power;

[0005] The object side surface of the first lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the object side surface of the second lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the object side surface of the third lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the object side surface of the fourth lens is convex at the paraxial position, and the image side surface is convex at the paraxial position; the image side surface of the fifth lens is concave at the paraxial position; the object side surface of the sixth lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the object side surface of the seventh lens is convex at the paraxial position, and the image side surface is concave at the paraxial position;

[0006] The distortion of the camera optical lens at 1.0 field of view is DIST 1.0H , the distortion at 0.8 field of view is DIST 0.8H, the distortion at 0.6 field of view is DIST 0.6H , the distortion at 0.5 field of view is DIST 0.5H , the distortion at 0.3 field of view is DIST 0.3H , the combined focal length of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens is f12345, the combined focal length of the sixth lens and the seventh lens is f67, the central curvature radius of the object side of the seventh lens at the paraxial position is R13, the central curvature radius of the image side of the seventh lens at the paraxial position is R14, the Abbe number of the first lens is v1, the central curvature radius of the object side of the third lens at the paraxial position is R5, the central curvature radius of the image side of the third lens at the paraxial position is R6, the focal length of the imaging optical lens is f, the entrance pupil diameter of the imaging optical lens is ENPD, the field of view angle of 1.0 field of view of the imaging optical lens is FOV, and the following relationship is satisfied:

[0007] 0.40≤(DIST 0.8H -DIST 0.5H ) / (DIST 0.5H -DIST 0.3H )≤1.60;

[0008] -0.13≤(DIST 1.0H -DIST 0.8H ) / (DIST 0.8H -DIST 0.6H )≤2.50;

[0009] 0.25≤f12345 / f67≤2.40;

[0010] 1.60≤R13 / R14≤3.80;

[0011] 80.00≤v1≤82.00;

[0012] 4.00≤(R5+R6) / f≤9.00;

[0013] 0.05≤ENPD / FOV≤0.07.

[0014] Preferably, the following relationship is satisfied:

[0015] 0.40≤(DIST 0.8H -DIST 0.5H ) / (DIST 0.5H -DIST 0.3H )≤1.40.

[0016] Preferably, the following relationship is satisfied:

[0017] -0.12≤(DIST 1.0H -DIST 0.8H ) / (DIST 0.8H -DIST 0.6H )≤2.10.

[0018] Preferably, the following relationship is satisfied: 0.25≤f12345 / f67≤2.10.

[0019] Preferably, the following relationship is satisfied: 2.00≤R13 / R14≤3.20.

[0020] Preferably, the following relationship is satisfied: 5.00≤(R5+R6) / f≤7.80.

[0021] Preferably, the maximum optical radius of the objective side of the third lens is SD31, the sag at the maximum optical radius of the objective side of the third lens is SAG31, the maximum optical radius of the objective side of the first lens is SD11, the sag at the maximum optical radius of the objective side of the first lens is SAG11, the central curvature radius of the objective side of the first lens at the paraxial position is R1, and the central curvature radius of the objective side of the third lens at the paraxial position is R5, satisfying the following relationship: -6.60≤(SAG31 / SD31*R5) / (SAG11 / SD11*R1)≤-1.40.

[0022] Preferably, the following relationship is satisfied:

[0023] -5.80≤(SAG31 / SD31*R5) / (SAG11 / SD11*R1)≤-1.70.

[0024] Preferably, the on-axis thickness of the first lens is d1, the on-axis thickness of the second lens is d3, and the on-axis thickness of the seventh lens is d13, and the following relationship is satisfied: 1.45≤(d1+d3+d13) / d1≤2.25.

[0025] Preferably, the following relationship is satisfied: 1.63≤(d1+d3+d13) / d1≤2.02.

[0026] Preferably, the first lens is a glass lens.

[0027] The technical solution of the utility model further provides an optical camera lens, the optical camera lens comprising a total of seven lenses, the seven lenses being, from the object side to the image side, in order: a first lens having positive refractive power, a second lens having negative refractive power, a third lens having negative refractive power, a fourth lens having positive refractive power, a fifth lens having negative refractive power, a sixth lens having positive refractive power, and a seventh lens having negative refractive power;

[0028] The object side surface of the first lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the object side surface of the second lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the object side surface of the third lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the object side surface of the fourth lens is convex at the paraxial position, and the image side surface is convex at the paraxial position; the image side surface of the fifth lens is concave at the paraxial position; the object side surface of the sixth lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the object side surface of the seventh lens is convex at the paraxial position, and the image side surface is concave at the paraxial position;

[0029] The distortion of the camera optical lens at 1.0 field of view is DIST 1.0H , the distortion at 0.8 field of view is DIST 0.8H , the distortion at 0.6 field of view is DIST 0.6H , the distortion at 0.5 field of view is DIST 0.5H , the distortion at 0.3 field of view is DIST 0.3H , the combined focal length of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens is f12345, the combined focal length of the sixth lens and the seventh lens is f67, the central curvature radius of the object side surface of the first lens at the paraxial position is R1, the central curvature radius of the image side surface of the first lens at the paraxial position is R2, the central curvature radius of the object side surface of the second lens at the paraxial position is R3, the central curvature radius of the image side surface of the second lens at the paraxial position is R4, the central curvature radius of the object side surface of the sixth lens at the paraxial position is R11, and the central curvature radius of the image side surface of the sixth lens at the paraxial position is R12, and the following relationship is satisfied:

[0030] 0.40≤(DIST 0.8H -DIST 0.5H ) / (DIST 0.5H -DIST 0.3H )≤1.60;

[0031] -0.13≤(DIST 1.0H -DIST 0.8H ) / (DIST 0.8H -DIST 0.6H )≤2.50;

[0032] 0.25≤f12345 / f67≤2.40;

[0033] -2.50≤(R1+R2) / (R1-R2)≤-1.50;

[0034] 7.00≤(R3+R4) / (R3-R4)≤10.00;

[0035] 0.30≤R11 / R12≤0.40.

[0036] Preferably, the following relationship is satisfied:

[0037] 0.40≤(DIST 0.8H -DIST 0.5H ) / (DIST 0.5H -DIST 0.3H )≤1.40.

[0038] Preferably, the following relationship is satisfied:

[0039] -0.12≤(DIST 1.0H -DIST 0.8H ) / (DIST 0.8H -DIST 0.6H )≤2.10.

[0040] Preferably, the following relationship is satisfied: 0.25≤f12345 / f67≤2.10.

[0041] Preferably, the following relationship is satisfied: -2.10≤(R1+R2) / (R1-R2)≤-1.90.

[0042] Preferably, the following relationship is satisfied: 7.80≤(R3+R4) / (R3-R4)≤9.20.

[0043] Preferably, the sum of the lengths of the air gaps between any two adjacent lenses from the first lens to the seventh lens on the optical axis is ∑d, the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: 0.25≤∑d / TTL≤0.37.

[0044] Preferably, the following relationship is satisfied: 0.28≤∑d / TTL≤0.33.

[0045] Preferably, the first lens is a glass lens.

[0046] The technical solution of the present invention further provides a lens assembly, which includes the above-mentioned camera optical lens, specifically, it includes a first lens barrel accommodating the first lens and a second lens barrel accommodating the second lens to the seventh lens.

[0047] Preferably, the first lens barrel includes a first surface close to the object side, the second lens barrel includes a second surface close to the object side, the object side surface of the first lens partially protrudes beyond the first surface toward the object side, the distance between the first surface and the center of the object side surface of the first lens along the optical axis is B1, the distance between the second surface and the center of the object side surface of the first lens along the optical axis is B2, the central curvature radius of the object side surface of the first lens at the paraxial position is R1, the focal length of the first lens is f1, and the following relationship is satisfied: 0.80≤(B1 / B2)*(f1 / R1)≤1.50.

[0048] The beneficial effects of the present invention are as follows: the camera optical lens according to the present invention has excellent optical properties, and has the characteristics of small aberration, high image quality, good processability and easy post-image distortion adjustment. It is particularly suitable for mobile phone camera lens assemblies and WEB camera lenses and vehicle-mounted lenses composed of high-pixel CCD, CMOS and other camera elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0050] Figure 1 1 is a schematic structural diagram of a camera optical lens according to a first embodiment of the present invention;

[0051] Figure 2 yes Figure 1 Schematic diagram of axial aberration of the camera optical lens shown;

[0052] Figure 3 yes Figure 1 Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0053] Figure 4 yes Figure 1 Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0054] Figure 5 2 is a schematic structural diagram of a second embodiment of the present invention;

[0055] Figure 6 yes Figure 5 Schematic diagram of axial aberration of the camera optical lens shown;

[0056] Figure 7 yes Figure 5 Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0057] Figure 8 yes Figure 5 Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0058] Figure 9 2 is a schematic structural diagram of a third embodiment of the present invention;

[0059] Figure 10 yes Figure 9 Schematic diagram of axial aberration of the camera optical lens shown;

[0060] Figure 11 yes Figure 9 Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0061] Figure 12 yes Figure 9 Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0062] Figure 13 2 is a schematic structural diagram of a fourth embodiment of the present invention;

[0063] Figure 14 yes Figure 13 Schematic diagram of axial aberration of the camera optical lens shown;

[0064] Figure 15 yes Figure 13 Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0065] Figure 16 yes Figure 13 Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0066] Figure 17 It is a structural schematic diagram of the lens assembly provided by the utility model. DETAILED DESCRIPTION

[0067] To further clarify the objectives, technical solutions, and advantages of the present invention, various embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, those skilled in the art will appreciate that numerous technical details are provided in various embodiments of the present invention to facilitate a better understanding of the present invention. However, even without these technical details and the various variations and modifications based on the following embodiments, the technical solutions claimed in the present invention can be achieved.

[0068] Reference Attachment Figure 1-16 The technical solution of the present utility model provides a camera optical lens 10, 20, 30, 40. Figure 1 、 5Figures 9, 13 show the imaging optical lenses 10, 20, 30, and 40 of the present invention. These lenses comprise a total of seven lenses. Specifically, from the object side to the image side, the imaging optical lenses comprise: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. An optical element such as an optical filter GF may be positioned between the seventh lens L7 and the image plane Si.

[0069] refer to Figure 17 The present invention further provides a lens assembly 100, comprising a lens barrel 110 and any of the aforementioned camera optical lenses housed within the lens barrel 110. The lens barrel 110 comprises a first lens barrel 101 and a second lens barrel 102. The first lens barrel 101 and the second lens barrel 102 may be integrally formed or separately formed. Specifically, the first lens barrel 101 houses the first lens L1, and the second lens barrel 102 houses the second lens L2 through the seventh lens L7. The first lens barrel 101 includes a first surface 1011 close to the object side, the second lens barrel 102 includes a second surface 1021 close to the object side, the object-side surface of the first lens L1 partially protrudes from the first surface 1011 facing the object side, the distance between the first surface 1011 and the center L1X of the object side surface of the first lens L1 along the optical axis X is B1, the distance between the second surface 1021 and the center L1X of the object side surface of the first lens L1 along the optical axis X is B2, the central curvature radius of the object side surface of the first lens L1 at the paraxial position is R1, the focal length of the first lens L1 is f1, and the following relationship is satisfied: 0.80≤(B1 / B2)*(f1 / R1)≤1.50.

[0070] The first lens L1 is a glass lens, the second lens L2 is a plastic lens, the third lens L3 is a plastic lens, the fourth lens L4 is a plastic lens, the fifth lens L5 is a plastic lens, the sixth lens L6 is a plastic lens, and the seventh lens L7 is a plastic lens. The combination of glass and resin lenses reduces chromatic aberration and improves the performance of the optical camera lens. The lenses can also be made of other materials.

[0071] 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.

[0072] The object-side surface of the first lens L1 is convex at the paraxial direction, and the image-side surface is concave at the paraxial direction. The first lens L1 has positive refractive power. The object-side surface and the image-side surface of the first lens L1 can also be set to other concave and convex distributions.

[0073] The object-side surface of the second lens L2 is convex at the paraxial direction, and the image-side surface is concave at the paraxial direction. The first lens L2 has negative refractive power. The object-side and image-side surfaces of the first lens L2 can also be configured with other concave and convex distributions.

[0074] The object-side surface of the third lens L3 is convex at the paraxial direction, and the image-side surface is convex at the paraxial direction. The third lens L3 has negative refractive power. The object-side surface and image-side surface of the third lens L3 can also be configured with other concave and convex distributions.

[0075] The object-side surface of the fourth lens element L4 is convex at the paraxial direction, and the image-side surface is convex at the paraxial direction. The fourth lens element L4 has positive refractive power. The object-side surface and image-side surface of the fourth lens element L4 can also be configured with other concave and convex distributions.

[0076] The object-side surface of the fifth lens element L5 is convex or concave at the paraxial direction, and the image-side surface is concave at the paraxial direction. The fifth lens element L5 has negative refractive power. The object-side and image-side surfaces of the fifth lens element L5 can also be configured with other concave or convex distributions.

[0077] The object-side surface of the sixth lens element L6 is convex at the paraxial direction, and the image-side surface is concave at the paraxial direction. The sixth lens element L6 has positive refractive power. The object-side and image-side surfaces of the sixth lens element L6 can also be configured with other concave and convex distributions.

[0078] The object-side surface of the seventh lens element L7 is convex at the paraxial direction, and the image-side surface is concave at the paraxial direction. The seventh lens element L7 has negative refractive power. The object-side and image-side surfaces of the seventh lens element L7 can also be configured with other concave and convex distributions.

[0079] Define the distortion of the camera optical lens at 0.8 field of view as DIST 0.8H , the distortion at 0.5 field of view is DIST 0.5H , the distortion at 0.3 field of view is DIST 0.3H , satisfying the following relationship: 0.40≤(DIST 0.8H -DIST 0.5H ) / (DIST 0.5H -DIST 0.3H )≤1.60. Within the range of the relationship, it is beneficial to optimize the distortion curve. In the later image processing, it is easy to match the distortion correction formula, improve the distortion correction effect, and reduce image distortion. Distortion = (actual image height - ideal image height) / ideal image height * 100%. Preferably, 0.40≤(DIST 0.8H -DIST 0.5H ) / (DIST 0.5H -DIST 0.3H )≤1.40.

[0080] Define the distortion of the camera optical lens at 1.0 field of view as DIST1.0H , the distortion at 0.8 field of view is DIST 0.8H , the distortion at 0.6 field of view is DIST 0.6H , satisfying the following relationship: -0.13≤(DIST 1.0H -DIST 0.8H ) / (DIST 0.8H -DIST 0.6H )≤2.50, within the range of the relationship, it is beneficial to optimize the distortion curve. In the later image processing, it is easy to match the distortion correction formula, improve the distortion correction effect, and reduce image distortion. Preferably, -0.12≤(DIST 1.0H -DIST 0.8H ) / (DIST 0.8H -DIST 0.6H )≤2.10.

[0081] The combined focal length of the first, second, third, fourth, and fifth lenses is defined as f12345, and the combined focal length of the sixth and seventh lenses is defined as f67, satisfying the following relationship: 0.25≤f12345 / f67≤2.40. Within the range of this relationship, a reasonable ratio between the combined focal length of the sixth and seventh lenses and the combined focal lengths of the first, second, third, fourth, and fifth lenses is set to facilitate a reasonable spatial distribution of the focal power of each lens and reduce aberrations of the optical system. Preferably, 0.25≤f12345 / f67≤2.10.

[0082] The central radius of curvature of the object-side surface of the seventh lens at the paraxial position is defined as R13, and the central radius of curvature of the image-side surface of the seventh lens at the paraxial position is defined as R14, satisfying the following relationship: 1.60 ≤ R13 / R14 ≤ 3.80. By controlling the ratio of the central radius of curvature of the object-side surface of the seventh lens at the paraxial position to the central radius of curvature of the image-side surface of the seventh lens at the paraxial position within this range, the processability of the seventh lens can be guaranteed, system aberrations can be reduced, and image quality can be improved. Preferably, 2.00 ≤ R13 / R14 ≤ 3.20.

[0083] The Abbe number of the first lens is defined as v1, satisfying the following relationship: 80.00 ≤ v1 ≤ 82.00. By controlling the Abbe number of the first lens within this range, the overall chromatic aberration of the system is controlled. Incorporating this low-refractive-index, high-Abbe-number material into the design can leverage its properties to achieve enhanced performance in camera lenses, thereby better meeting market demands.

[0084] The central curvature radius of the object-side surface of the third lens at the paraxial position is defined as R5, the central curvature radius of the image-side surface of the third lens at the paraxial position is defined as R6, and the focal length of the imaging optical lens is defined as f, satisfying the following relationship: 4.00≤(R5+R6) / f≤9.00. Reasonable configuration of the ratio of the sum of the central curvature radii of the object-side surface and the image-side surface of the third lens to the effective focal length of the imaging optical lens can ensure that the optical imaging lens has sufficiently small chromatic aberration of magnification, ensuring that the optical imaging lens is less susceptible to purple fringing, yellow fringing, and other phenomena during shooting. Preferably, 5.00≤(R5+R6) / f≤7.80.

[0085] The entrance pupil diameter of the camera optical lens is defined as ENPD, and the field of view angle of 1.0 field of view of the camera optical lens is defined as FOV, which satisfies the following relationship: 0.05≤ENPD / FOV≤0.07. By limiting the ratio of ENPD and FOV within a reasonable range, a small FNO lens can be achieved, which increases the amount of light entering while meeting the wide-angle requirement.

[0086] The maximum optical radius of the third lens objective side is defined as SD31, the sag at the maximum optical radius of the third lens objective side is defined as SAG31, the maximum optical radius of the first lens objective side is defined as SD11, the sag at the maximum optical radius of the first lens objective side is defined as SAG11, the central curvature radius of the first lens objective side at the paraxial position is defined as R1, and the central curvature radius of the third lens objective side at the paraxial position is defined as R5, satisfying the following relationship: -6.60≤(SAG31 / SD31*R5) / (SAG11 / SD11*R1)≤-1.40; within the range of the relationship, both the first lens objective side and the third lens objective side have relatively flat surface shapes, reducing the assembly sensitivity of the camera optical lens. Preferably, -5.80≤(SAG31 / SD31*R5) / (SAG11 / SD11*R1)≤-1.70. Among them, the maximum optical radius refers to the maximum radius reached by the MIC field of view light on the lens surface; the sagittal height refers to the distance from a point on the surface to the center point of the surface on the optical axis along the optical axis, which is positive to the right of the center point and negative to the left of the center point.

[0087] The on-axis thickness of the first lens is defined as d1, the on-axis thickness of the second lens is defined as d3, and the on-axis thickness of the seventh lens is defined as d13, satisfying the following relationship: 1.45 ≤ (d1 + d3 + d13) / d1 ≤ 2.25. Reasonable control of the on-axis thicknesses of the first, second, and seventh lenses facilitates ultra-thin lens fabrication. Preferably, 1.63 ≤ (d1 + d3 + d13) / d1 ≤ 2.02.

[0088] The central radius of curvature of the object side of the first lens at the paraxial position is defined as R1, and the central radius of curvature of the image side of the first lens at the paraxial position is defined as R2, satisfying the following relationship: -2.50 ≤ (R1 + R2) / (R1 - R2) ≤ -1.50. Reasonable control of the shape of the first lens can adjust the surface profile and refractive power of the first lens, thereby facilitating the reception of light with a wider viewing angle. Preferably, -2.10 ≤ (R1 + R2) / (R1 - R2) ≤ -1.90.

[0089] The central curvature radius of the object side of the second lens at the paraxial position is defined as R3, and the central curvature radius of the image side of the second lens at the paraxial position is defined as R4, satisfying the following relationship: 7.00 ≤ (R3 + R4) / (R3 - R4) ≤ 10.00. This ensures the machinability of the shape of the second lens and effectively controls the aberrations generated by the mobile camera module at the second lens. Preferably, 7.80 ≤ (R3 + R4) / (R3 - R4) ≤ 9.20.

[0090] The sum of the lengths of the air gaps between any two adjacent lenses between the first through seventh lenses on the optical axis is defined as ∑d. The total optical length of the camera optical lens is defined as TTL, satisfying the following relationship: 0.25 ≤ ∑d / TTL ≤ 0.37. Within this relationship, the ratio of the sum of the air gaps between any two adjacent lenses on the optical axis to the total optical length is appropriately controlled to achieve ultrathinness. Preferably, 0.28 ≤ ∑d / TTL ≤ 0.33.

[0091] Compared with the prior art, the camera optical lens provided by the present invention is configured with 0.40≤(DIST 0.8H -DIST 0.5H ) / (DIST 0.5H -DIST 0.3H )≤1.60;-0.13≤(DIST 1.0H -DIST 0.8H ) / (DIST 0.8H -DIST 0.6H)≤2.50; 0.25≤f12345 / f67≤2.40; 1.60≤R13 / R14≤3.80; 80.00≤v1≤82.00; 4.00≤(R5+R6) / f≤9.00; 0.05≤ENPD / FOV≤0.07. This optimizes the distortion curve, making it easier to match the distortion correction formula in post-processing, improving the distortion correction effect and reducing image distortion. This also facilitates the rational spatial distribution of the optical power of each lens, reducing optical system aberrations. It also ensures the processability of the seventh lens, reduces system aberrations, and improves image quality. Furthermore, it controls the overall chromatic aberration of the system, leveraging the properties of the material to achieve superior performance in camera lenses. This allows for sufficiently minimal lateral chromatic aberration in optical imaging lenses, ensuring that purple and yellow fringing are less likely to occur during shooting. This enables the realization of a small FNO lens, increasing light intake while meeting wide-angle requirements.

[0092] In addition, compared with the prior art, the present invention can also configure 0.40≤(DIST 0.8H -DIST 0.5H ) / (DIST 0.5H -DIST 0.3H )≤1.60;-0.13≤(DIST 1.0H -DIST 0.8H ) / (DIST 0.8H -DIST 0.6H )≤2.50;0.25≤f12345 / f67≤2.40;-2.50≤(R1+R2) / (R1-R2)≤-1.50;7.00≤(R3+R4) / (R3-R4)≤10.00;0.30≤R11 / R12≤0.40, the distortion curve can be optimized. In the later image processing, it is easy to match the distortion correction formula, improve the distortion correction effect, and reduce image distortion; it is conducive to the reasonable spatial distribution of the optical power of each lens, reducing the aberration of the optical system; it can ensure the processability of the seventh lens, reduce the aberration of the system, and improve the image quality. In addition, it also helps to receive light with a wider viewing angle; it can ensure the processability of the shape of the second lens, and can effectively control the aberration generated by the mobile camera module at the second lens; the surface shape of the sixth lens can cooperate with the fifth lens to correct off-axis aberrations, and at the same time avoid the generation of stray light at the image side end, thereby improving the illumination and imaging quality of the imaging surface.

[0093] The following examples illustrate the camera optical lens of the present invention. The symbols used in each example are as follows. The focal length, on-axis distance, center curvature radius, and on-axis thickness are in mm.

[0094] TTL: total optical length (the on-axis distance from the object side of the first lens L1 to the image surface Si), in mm;

[0095] Aperture value FNO: refers to the ratio of the effective focal length of the camera optical lens to the entrance pupil diameter.

[0096] Next, the technical solution of the present utility model is described in detail with four implementation modes.

[0097] (First embodiment)

[0098] Table 1 and Table 2 show design data of the imaging optical lens 10 according to the first embodiment of the present invention.

[0099]

Table 1

[0100]

[0101]

[0102] The meanings of the symbols are as follows.

[0103] S1: aperture;

[0104] R: radius of curvature at the center of the optical surface;

[0105] R1: the central radius of curvature of the object side of the first lens L1 at the paraxial point;

[0106] R2: the central curvature radius of the image side of the first lens L1 at the paraxial point;

[0107] R3: the central radius of curvature of the object side of the second lens L2 at the paraxial point;

[0108] R4: the central curvature radius of the image side of the second lens L2 at the paraxial point;

[0109] R5: the central radius of curvature of the object side of the third lens element L3 at the paraxial point;

[0110] R6: the central curvature radius of the image side of the third lens L3 at the paraxial point;

[0111] R7: the central radius of curvature of the object side of the fourth lens element L4 at the paraxial point;

[0112] R8: the central curvature radius of the image side surface of the fourth lens L4 at the paraxial point;

[0113] R9: the central radius of curvature of the object side of the fifth lens element L5 at the paraxial point;

[0114] R10: Central radius of curvature of the image side surface of the fifth lens element L5 at the paraxial position; R11: Central radius of curvature of the object side surface of the sixth lens element L6 at the paraxial position; R12: Central radius of curvature of the image side surface of the sixth lens element L6 at the paraxial position; R13: Central radius of curvature of the object side surface of the seventh lens element L7 at the paraxial position; R14: Central radius of curvature of the image side surface of the seventh lens element L7 at the paraxial position; R15: Central radius of curvature of the object side surface of the optical filter GF at the paraxial position; R16: Central radius of curvature of the image side surface of the optical filter GF at the paraxial position;

[0115] d: the on-axis thickness of the lens and the on-axis distance between lenses;

[0116] d0: the on-axis distance from aperture S1 to the object-side surface of the first lens L1;

[0117] d1: axial thickness of the first lens L1;

[0118] d2: the on-axis distance from the image-side surface of the first lens L1 to the object-side surface of the second lens L2;

[0119] d3: axial thickness of the second lens L2;

[0120] d4: the on-axis distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3;

[0121] d5: axial thickness of the third lens L3;

[0122] d6: the on-axis distance from the image-side surface of the third lens L3 to the object-side surface of the fourth lens L4;

[0123] d7: axial thickness of the fourth lens L4;

[0124] d8: the on-axis distance from the image-side surface of the fourth lens L4 to the object-side surface of the fifth lens L5;

[0125] d9: axial thickness of the fifth lens L5;

[0126] d10: the on-axis distance from the image-side surface of the fifth lens L5 to the object-side surface of the sixth lens L6;

[0127] d11: axial thickness of sixth lens L6;

[0128] d12: the on-axis distance from the image-side surface of the sixth lens L6 to the object-side surface of the seventh lens L7;

[0129] d13: axial thickness of seventh lens L7;

[0130] d14: the on-axis distance between the image-side surface of the seventh lens L7 and the object-side surface of the optical filter GF;

[0131] d15: axial thickness of the optical filter GF;

[0132] d16: the axial distance from the image side of the optical filter GF to the image plane Si;

[0133] nd: refractive index of d-line (d-line is green light with a wavelength of 550nm);

[0134] nd1: the refractive index of the first lens L1 at the d-line;

[0135] nd2: the refractive index of the second lens L2 at the d-line;

[0136] nd3: the refractive index of the third lens L3 at the d-line;

[0137] nd4: the refractive index of the fourth lens L4 at the d-line;

[0138] nd5: the refractive index of the fifth lens L5 at the d-line;

[0139] nd6: the refractive index of the sixth lens L6 at the d-line;

[0140] nd7: the refractive index of the seventh lens L7 at the d-line;

[0141] ndg: refractive index of the d-line of the optical filter GF;

[0142] vd: Abbe number;

[0143] v1: Abbe number of the first lens L1;

[0144] v2: Abbe number of the second lens L2;

[0145] v3: Abbe number of the third lens L3;

[0146] v4: Abbe number of the fourth lens L4;

[0147] v5: Abbe number of the fifth lens L5;

[0148] v6: Abbe number of sixth lens L6;

[0149] v7: Abbe number of seventh lens L7;

[0150] vg: Abbe number of the optical filter GF.

[0151] Table 2 shows the aspherical surface data of each lens in the imaging optical lens 10 according to the first embodiment of the present invention.

[0152]

Table 2

[0153]

[0154]

[0155] For convenience, the aspheric surface of each lens surface is represented by the aspheric surface shown in the following formula (1). However, the present invention is not limited to the aspheric surface polynomial form represented by the formula (1).

[0156] z=(cr 2 ) / {1+[1-(k+1)(c 2 r 2 )] 1 / 2}+A4r 4 +A6r 6 +A8r 8 +A10r 10 +A12r 12 +A14r 14 +A

[0157] 16r 16 +A18r 18 +A20r 20 +A22r 22 +A24r 24 +A26r 26 +A28r 28 +A30r 30 (1)

[0158] Where k is the conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 are aspheric coefficients, c is the curvature at the center of the optical surface, r is the perpendicular distance between a point on the aspheric curve and the optical axis, and z is the aspheric depth (the perpendicular distance between a point on the aspheric surface at a distance r from the optical axis and the tangent plane tangent to the vertex on the aspheric axis).

[0159] Figure 2 、 Figure 3 Schematic diagrams showing axial aberration and chromatic aberration of magnification of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing through the imaging optical lens 10 of the first embodiment are shown respectively. Figure 4 FIG1 shows a schematic diagram of field curvature and distortion of light having a wavelength of 555 nm after passing through the camera optical lens 10 of the first embodiment. Figure 4 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0160] In this embodiment, the imaging optical lens 10 has an entrance pupil diameter ENPD of 5.136 mm, a full field of view (1.0 field of view) image height IH of 8.000 mm, a full field of view (1.0 field of view) diagonal field of view FOV of 85.58°, a MIC field of view image height IH of 8.250 mm, and a MIC field of view diagonal field of view FOV of 87.71°. The imaging optical lens 10 meets the design requirements of low aberration, high image quality, ease of processing, and ease of post-processing image distortion adjustment. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0161] It can be understood that the 1.0 field of view image height refers to half of the diagonal length of the effective pixel area of the sensor; the MIC field of view image height refers to the field of view height that is expanded beyond the 1.0 field of view image height to prevent assembly deviation; the FOV in the diagonal direction of the 1.0 field of view refers to the field of view angle corresponding to the effective pixel area of the sensor; the FOV in the diagonal direction of the MIC field of view refers to the field of view angle corresponding to the MIC field of view image height.

[0162] (Second embodiment)

[0163] The meanings of the symbols in the second embodiment are the same as those in the first embodiment.

[0164] Figure 5 FIG. 2 shows a second embodiment of the imaging optical lens 20 of the present invention.

[0165] Tables 3 and 4 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0166]

Table 3

[0167]

[0168] Table 4 shows the aspherical surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0169]

Table 4

[0170]

[0171]

[0172] Figure 6 、 Figure 7 Schematic diagrams showing axial aberration and chromatic aberration of magnification of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing through the imaging optical lens 20 of the second embodiment are shown respectively. Figure 8 FIG. 4 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging optical lens 20 of the second embodiment. Figure 8The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0173] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 20 is 5.077 mm, the full field of view (1.0 field of view) image height IH is 8.000 mm, the field of view angle FOV in the diagonal direction of the full field of view (1.0 field of view) is 83.00°, the MIC field of view image height IH is 8.290 mm, and the field of view angle FOV in the diagonal direction of the MIC field of view is 84.97°. The camera optical lens 20 meets the design requirements of small aberration, high image quality, easy processing and easy post-image distortion adjustment. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0174] (Third embodiment)

[0175] The meanings of the symbols in the third embodiment are the same as those in the first embodiment.

[0176] Figure 9 FIG. 1 shows a third embodiment of a camera optical lens 30 according to the present invention.

[0177] Tables 5 and 6 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.

[0178]

Table 5

[0179]

[0180] Table 6 shows the aspherical surface data of each lens in the imaging optical lens 30 according to the third embodiment of the present invention.

[0181]

Table 6

[0182]

[0183]

[0184] Figure 10 、 Figure 11 Schematic diagrams showing axial aberration and chromatic aberration of magnification of light with wavelengths of 655 nm, 610 nm, 555 nm, 510 nm, 470 nm and 435 nm after passing through the imaging optical lens 30 of the third embodiment are shown respectively. Figure 12 FIG. 3 is a schematic diagram showing the field curvature and distortion of light with a wavelength of 555 nm after passing through the camera optical lens 30 of the third embodiment. Figure 12 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0185] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 30 is 5.140 mm, the full field of view (1.0 field of view) image height IH is 8.000 mm, the field of view angle FOV in the diagonal direction of the full field of view (1.0 field of view) is 85.10°, the MIC field of view image height IH is 8.290 mm, and the field of view angle FOV in the diagonal direction of the MIC field of view is 87.14°. The camera optical lens 30 meets the design requirements of small aberration, high image quality, easy processing and easy post-image distortion adjustment. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0186] (Fourth embodiment)

[0187] The meanings of the symbols in the fourth embodiment are the same as those in the first embodiment.

[0188] Figure 13 FIG. 4 shows a fourth embodiment of the imaging optical lens 40 of the present invention.

[0189] Tables 7 and 8 show design data of the imaging optical lens 40 according to the fourth embodiment of the present invention.

[0190]

Table 7

[0191]

[0192] Table 8 shows the aspherical surface data of each lens in the imaging optical lens 40 according to the fourth embodiment of the present invention.

[0193]

Table 8

[0194]

[0195]

[0196] Figure 14 、 Figure 15 Schematic diagrams showing axial aberration and chromatic aberration of magnification of light with wavelengths of 655 nm, 610 nm, 555 nm, 510 nm, 470 nm and 435 nm after passing through the imaging optical lens 40 of the fourth embodiment are shown respectively. Figure 16 FIG. 4 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging optical lens 40 of the fourth embodiment. Figure 16 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0197] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 40 is 5.069 mm, the full field of view (1.0 field of view) image height IH is 8.000 mm, the field of view angle FOV in the diagonal direction of the full field of view (1.0 field of view) is 85.79°, the MIC field of view image height IH is 8.290 mm, and the field of view angle FOV in the diagonal direction of the MIC field of view is 87.91°. The camera optical lens 40 meets the design requirements of small aberration, high image quality, easy processing and easy post-image distortion adjustment. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0198]

Table 9

[0199]

[0200]

[0201] Those skilled in the art will appreciate that the above embodiments are specific implementations of the present invention, and that in actual applications, various changes may be made in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A camera optical lens, characterized in that: The camera optical lens comprises a total of seven lenses, and the seven lenses are, in order from the object side to the image side: a first lens having positive refractive power, a second lens having negative refractive power, a third lens having negative refractive power, a fourth lens having positive refractive power, a fifth lens having negative refractive power, a sixth lens having positive refractive power, and a seventh lens having negative refractive power; The object side surface of the first lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the object side surface of the second lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the object side surface of the third lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the object side surface of the fourth lens is convex at the paraxial position, and the image side surface is convex at the paraxial position; the image side surface of the fifth lens is concave at the paraxial position; the object side surface of the sixth lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the object side surface of the seventh lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; The distortion of the camera optical lens at 1.0 field of view is DIST 1.0H , the distortion at 0.8 field of view is DIST 0.8H , the distortion at 0.6 field of view is DIST 0.6H , the distortion at 0.5 field of view is DIST 0.5H , the distortion at 0.3 field of view is DIST 0.3H , the combined focal length of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens is f12345, the combined focal length of the sixth lens and the seventh lens is f67, the central curvature radius of the object side of the seventh lens at the paraxial position is R13, the central curvature radius of the image side of the seventh lens at the paraxial position is R14, the Abbe number of the first lens is v1, the central curvature radius of the object side of the third lens at the paraxial position is R5, the central curvature radius of the image side of the third lens at the paraxial position is R6, the focal length of the imaging optical lens is f, the entrance pupil diameter of the imaging optical lens is ENPD, the field of view angle of 1.0 field of view of the imaging optical lens is FOV, and the following relationship is satisfied: 0.40≤(DIST 0.8H -DIST 0.5H ) / (DIST 0.5H -DIST 0.3H )≤1.60; -0.13≤(DIST 1.0H -DIST 0.8H ) / (DIST 0.8H -DIST 0.6H )≤2.50; 0.25≤f12345 / f67≤2.40; 1.60≤R13 / R14≤3.80; 80.00≤v1≤82.00； 4.00≤(R5+R6) / f≤9.00; 0.05≤ENPD / FOV≤0.

07.

2. The imaging optical lens according to claim 1, wherein: Satisfy the following relationship: 0.40≤(DIST 0.8H -DIST 0.5H ) / (DIST 0.5H -DIST 0.3H )≤1.

40.

3. The imaging optical lens according to claim 1, wherein: The following relationship is satisfied: -0.12≤(DIST 1.0H -DIST 0.8H ) / (DIST 0.8H -DIST 0.6H )≤2.

10.

4. The imaging optical lens according to claim 1, wherein: The following relationship is satisfied: 0.25≤f12345 / f67≤2.

10.

5. The imaging optical lens according to claim 1, wherein: The following relationship is satisfied: 2.00≤R13 / R14≤3.

20.

6. The imaging optical lens according to claim 1, wherein: The following relationship is satisfied: 5.00≤(R5+R6) / f≤7.

80.

7. The imaging optical lens according to claim 1, wherein: The maximum optical radius of the objective side of the third lens is SD31, the sag at the maximum optical radius of the objective side of the third lens is SAG31, the maximum optical radius of the objective side of the first lens is SD11, the sag at the maximum optical radius of the objective side of the first lens is SAG11, the central curvature radius of the objective side of the first lens at the paraxial position is R1, and the central curvature radius of the objective side of the third lens at the paraxial position is R5, satisfying the following relationship: -6.60≤(SAG31 / SD31*R5) / (SAG11 / SD11*R1)≤-1.

40.

8. The imaging optical lens according to claim 7, wherein: The following relationship is satisfied: -5.80≤(SAG31 / SD31*R5) / (SAG11 / SD11*R1)≤-1.

70.

9. The imaging optical lens according to claim 1, wherein: The on-axis thickness of the first lens is d1, the on-axis thickness of the second lens is d3, and the on-axis thickness of the seventh lens is d13, and the following relationship is satisfied: 1.45≤(d1+d3+d13) / d1≤2.

25.

10. The imaging optical lens according to claim 9, wherein: The following relationship is satisfied: 1.63≤(d1+d3+d13) / d1≤2.

02.

11. The imaging optical lens according to claim 1, wherein: The first lens is a glass lens.

12. A camera optical lens, characterized in that: The camera optical lens comprises a total of seven lenses, and the seven lenses are, in order from the object side to the image side: a first lens having positive refractive power, a second lens having negative refractive power, a third lens having negative refractive power, a fourth lens having positive refractive power, a fifth lens having negative refractive power, a sixth lens having positive refractive power, and a seventh lens having negative refractive power; The object side surface of the first lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the object side surface of the second lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the object side surface of the third lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the object side surface of the fourth lens is convex at the paraxial position, and the image side surface is convex at the paraxial position; the image side surface of the fifth lens is concave at the paraxial position; the object side surface of the sixth lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the object side surface of the seventh lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; The distortion of the camera optical lens at 1.0 field of view is DIST 1.0H , the distortion at 0.8 field of view is DIST 0.8H , the distortion at 0.6 field of view is DIST 0.6H , the distortion at 0.5 field of view is DIST 0.5H , the distortion at 0.3 field of view is DIST 0.3H , the combined focal length of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens is f12345, the combined focal length of the sixth lens and the seventh lens is f67, the central curvature radius of the object side surface of the first lens at the paraxial position is R1, the central curvature radius of the image side surface of the first lens at the paraxial position is R2, the central curvature radius of the object side surface of the second lens at the paraxial position is R3, the central curvature radius of the image side surface of the second lens at the paraxial position is R4, the central curvature radius of the object side surface of the sixth lens at the paraxial position is R11, and the central curvature radius of the image side surface of the sixth lens at the paraxial position is R12, and the following relationship is satisfied: 0.40≤(DIST 0.8H -DIST 0.5H ) / (DIST 0.5H -DIST 0.3H )≤1.60; -0.13≤(DIST 1.0H -DIST 0.8H ) / (DIST 0.8H -DIST 0.6H )≤2.50; 0.25≤f12345 / f67≤2.40; -2.50≤(R1+R2) / (R1-R2)≤-1.50; 7.00≤(R3+R4) / (R3-R4)≤10.00; 0.30≤R11 / R12≤0.

40.

13. The imaging optical lens according to claim 12, wherein: Satisfy the following relationship: 0.40≤(DIST 0.8H -DIST 0.5H ) / (DIST 0.5H -DIST 0.3H )≤1.

40.

14. The imaging optical lens according to claim 12, wherein: The following relationship is satisfied: -0.12≤(DIST 1.0H -DIST 0.8H ) / (DIST 0.8H -DIST 0.6H )≤2.

10.

15. The imaging optical lens according to claim 12, wherein: The following relationship is satisfied: 0.25≤f12345 / f67≤2.

10.

16. The imaging optical lens according to claim 12, wherein: The following relationship is satisfied: -2.10≤(R1+R2) / (R1-R2)≤-1.

90.

17. The imaging optical lens according to claim 12, wherein: The following relationship is satisfied: 7.80≤(R3+R4) / (R3-R4)≤9.

20.

18. The imaging optical lens according to claim 12, wherein: The sum of the lengths of the air gaps between any two adjacent lenses from the first lens to the seventh lens on the optical axis is ∑d, the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: 0.25≤∑d / TTL≤0.

37.

19. The imaging optical lens according to claim 18, wherein: The following relationship is satisfied: 0.28≤∑d / TTL≤0.

33.

20. The imaging optical lens according to claim 12, wherein: The first lens is a glass lens.

21. A lens assembly comprising the camera optical lens according to any one of claims 1 to 20, characterized in that: The invention comprises a first lens barrel for accommodating the first lens and a second lens barrel for accommodating the second lens to the seventh lens.

22. The lens assembly according to claim 21, wherein: The first lens barrel includes a first surface near the object side, the second lens barrel includes a second surface near the object side, the object side surface of the first lens partially protrudes beyond the first surface toward the object side, the distance between the first surface and the center of the object side surface of the first lens along the optical axis is B1, the distance between the second surface and the center of the object side surface of the first lens along the optical axis is B2, the central curvature radius of the object side surface of the first lens at the paraxial position is R1, the focal length of the first lens is f1, and the following relationship is satisfied: 0.80≤(B1 / B2)*(f1 / R1)≤1.50.

Images