Camera optical lens

Abstract

The present invention relates to the field of optical lenses. Disclosed is a camera optical lens, sequentially comprising seven lenses from an object side to an 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; and the following relational expressions are satisfied: 0.90≤d11.5 / d131.5≤1.70; 1.00≤(d31.5+d51.5+d71.5) / (d91.5+d111.5)≤1.80; and 1.10≤d131.5 / d13≤2.00.

Description

Camera optical lens TECHNICAL FIELD

[0001] The present application relates to the field of optical lens, in particular to a camera optical lens suitable for smart phones, digital cameras and other portable terminal devices, as well as surveillance cameras, PC lenses, vehicle-mounted lenses and other camera devices. BACKGROUND

[0002] In recent years, with the rise of various smart devices, the demand for miniaturized camera optical lenses is increasing, and due to the reduction in the pixel size of photosensitive devices, combined with the current trend of electronic products being light and thin, the miniaturized camera optical lens with good imaging quality has become the mainstream in the market. In order to obtain better imaging quality, multi-piece lens structure is often used. With the development of technology and the increasing of user's diversified needs, under the condition of continuous reduction of the pixel area of photosensitive devices and the increasing requirement of system on imaging quality, seven-piece lens structure gradually appears in the lens design. There is an urgent need for camera lenses with strong processability and ultra-thin design.

[0003] SUMMARY

[0004] In view of the above problems, the purpose of the present application is to provide a camera optical lens with strong processability and ultra-thin design requirements.

[0005] To achieve the above purpose, the technical scheme of the present application provides a camera optical lens, which comprises seven lenses, the seven lenses are arranged in order from the object side to the image side as follows: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power; the object side surface of the first lens is convex at the near axis, and the image side surface is concave at the near axis; the object side surface of the second lens is convex at the near axis, and the image side surface is concave at the near axis; the object side surface of the third lens is concave at the near axis, and the image side surface is concave at the near axis; the object side surface of the fourth lens is convex at the near axis, and the image side surface is convex at the near axis; the object side surface of the fifth lens is convex at the near axis, and the image side surface is concave at the near axis; the object side surface of the sixth lens is convex at the near axis, and the image side surface is convex at the near axis; the object side surface of the seventh lens is convex at the near axis, and the image side surface is concave at the near axis.

[0006] Among them, the on-axis distance from the image side surface of the seventh lens to the image plane is BF, the total optical length of the camera optical lens is TTL, the focal length of the sixth lens is f6, the focal length of the seventh lens is f7, the central curvature radius of the object side surface of the sixth lens at the paraxial position is R11, the central curvature radius of the object side surface of the seventh lens at the paraxial position is R13, the on-axis thickness of the first lens is d1, the on-axis distance between the first lens and the second lens is d2, the on-axis thickness of the second lens is d3, the on-axis thickness of the seventh lens is d13, and the thickness of the first lens at a radius of 1.5 mm along a direction parallel to the optical axis is d1 1.5 The thickness of the second lens parallel to the optical axis at a radius of 1.5 mm is d3 1.5 The thickness of the third lens at a radius of 1.5 mm along the direction parallel to the optical axis is d5 1.5 The thickness of the fourth lens at a radius of 1.5 mm along the direction parallel to the optical axis is d7 1.5 The thickness of the fifth lens at a radius of 1.5 mm along the direction parallel to the optical axis is d9 1.5 The thickness of the sixth lens at a radius of 1.5 mm along the direction parallel to the optical axis is d11 1.5 The thickness of the seventh lens at a radius of 1.5 mm along the direction parallel to the optical axis is d13 1.5 , and satisfy the following relationships: 0.16≤BF / TTL≤0.25; 2.10≤f6 / R11-f7 / R13≤2.90; 3.50≤(d1+d3) / d2≤9.00; 0.90≤d1 1.5 / d13 1.5 ≤1.70; 1.00≤(d3 1.5 +d5 1.5 +d7 1.5 ) / (d9 1.5 +d11 1.5 )≤1.80; 1.10≤d13 1.5 / d13≤2.00.

[0007] Preferably, the following relationship is satisfied: 1.00≤d1 1.5 / d13 1.5 ≤1.50.

[0008] Preferably, the following relationship is satisfied: 1.20≤(d3 1.5 +d5 1.5 +d7 1.5 ) / (d9 1.5 +d11 1.5 )≤1.55.

[0009] Preferably, the following relationship is satisfied: 1.25 ≤ d13 1.5 ≤ 1.80.

[0010] Preferably, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the on-axis thickness of the third lens is d5, and the on-axis thickness of the fourth lens is d7, and the following relationship is satisfied: -120.00 ≤ f3 / d5 + f4 / d7 ≤ -50.00.

[0011] Preferably, the central curvature radius of the object side surface of the fifth lens at the paraxial region is R9, the central curvature radius of the image side surface of the fifth lens at the paraxial region is R10, and the following relationship is satisfied: 3.10 ≤ (R9 + R10) / (R9 - R10) ≤ 8.50.

[0012] Preferably, the following relationship is satisfied: -105.00 ≤ f3 / d5 + f4 / d7 ≤ -60.00.

[0013] Preferably, the following relationship is satisfied: 3.80 ≤ (R9 + R10) / (R9 - R10) ≤ 7.00.

[0014] Preferably, the first lens is made of glass.

[0015] The present application also provides a photographing optical lens, which comprises seven lenses in sequence from the object side to the image side, i.e., a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power; the object side surface of the first lens is convex at the paraxial region, and the image side surface of the first lens is concave at the paraxial region; the object side surface of the second lens is convex at the paraxial region, and the image side surface of the second lens is concave at the paraxial region; the object side surface of the third lens is concave at the paraxial region, and the image side surface of the third lens is concave at the paraxial region; the object side surface of the fourth lens is convex at the paraxial region, and the image side surface of the fourth lens is convex at the paraxial region; the object side surface of the fifth lens is convex at the paraxial region, and the image side surface of the fifth lens is concave at the paraxial region; the object side surface of the sixth lens is convex at the paraxial region, and the image side surface of the sixth lens is convex at the paraxial region; the object side surface of the seventh lens is convex at the paraxial region, and the image side surface of the seventh lens is concave at the paraxial region.

[0016] wherein the focal length of the photographing optical lens is f, the combined focal length of the first lens and the second lens is f12, the on-axis thickness of the first lens is d1, the on-axis thickness of the second lens is d3, the on-axis thickness of the seventh lens is d13, the thickness of the first lens in the direction parallel to the optical axis at a radius of 1.5 mm is d1 1.5 , and the thickness of the second lens in the direction parallel to the optical axis at a radius of 1.5 mm is d31.5 a thickness of the third lens in a direction parallel to the optical axis at a radius of 1.5 mm is d5 1.5 a thickness of the fourth lens in a direction parallel to the optical axis at a radius of 1.5 mm is d7 1.5 a thickness of the fifth lens in a direction parallel to the optical axis at a radius of 1.5 mm is d9 1.5 a thickness of the sixth lens in a direction parallel to the optical axis at a radius of 1.5 mm is d11 1.5 a thickness of the seventh lens in a direction parallel to the optical axis at a radius of 1.5 mm is d13 1.5 an on-axis thickness sum of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens is ∑d, an optical total track length of the photographing optical lens is TTL, and the following relationships are satisfied: 0.90≤d1 1.5 / d13 1.5 ≤1.70; 1.00≤(d3 1.5 +d5 1.5 +d7 1.5 ) / (d9 1.5 +d11 1.5 )≤1.80; 1.10≤d13 1.5 / d13≤2.00; 0.30≤∑d / TTL≤0.65; 1.20≤(d1+d3+d13) / d1≤2.30; 0.90≤f12 / f≤1.60.

[0017] Preferably, the following relationships are satisfied: 0.38≤∑d / TTL≤0.58.

[0018] Preferably, the following relationships are satisfied: 1.50≤(d1+d3+d13) / d1≤2.00.

[0019] Preferably, the following relationships are satisfied: 1.10≤f12 / f≤1.40.

[0020] Preferably, the following relationships are satisfied: 1.00≤d1 1.5 / d13 1.5 ≤1.50.

[0021] Preferably, the following relationships are satisfied: 1.20≤(d3 1.5 +d5 1.5 +d7 1.5 ) / (d9 1.5 +d11 1.5 )≤1.55.

[0022] Preferably, the following relationships are satisfied: 1.25≤d13 1.5 / d13≤1.80.

[0023] Preferably, the central curvature radius of the first lens object side surface at the paraxial region is R1, the central curvature radius of the first lens image side surface at the paraxial region is R2, and the following relationship is satisfied: -2.50≤(R1+R2) / (R1-R2)≤-1.60.

[0024] Preferably, the on-axis thickness of the fourth lens is d7, the on-axis distance between the fourth lens and the fifth lens is d8, and the on-axis thickness of the fifth lens is d9, and the following relationship is satisfied: 1.10≤(d7+d9) / d8≤2.10.

[0025] Preferably, the following relationship is satisfied: -2.20≤(R1+R2) / (R1-R2)≤-1.90.

[0026] Preferably, the following relationship is satisfied: 1.40≤(d7+d9) / d8≤1.75.

[0027] Preferably, the first lens is made of glass.

[0028] The camera optical lens according to the present application has excellent optical characteristics, is easy to process, and is thin, and is particularly suitable for a mobile phone camera lens assembly, a WEB camera lens, and a vehicle-mounted camera lens. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0030] Fig. 1 is a structural schematic diagram of a camera optical lens according to a first embodiment of the present application;

[0031] Fig. 2 is an axial aberration schematic diagram of the camera optical lens shown in Fig. 1;

[0032] Fig. 3 is a magnification chromatic aberration schematic diagram of the camera optical lens shown in Fig. 1;

[0033] Fig. 4 is a field curvature and distortion schematic diagram of the camera optical lens shown in Fig. 1;

[0034] Fig. 5 is a structural schematic diagram of a camera optical lens according to a second embodiment of the present application;

[0035] Fig. 6 is an axial aberration schematic diagram of the camera optical lens shown in Fig. 5;

[0036] Fig. 7 is a schematic diagram of the magnification chromatic aberration of the photographing optical lens shown in Fig. 5;

[0037] Fig. 8 is a schematic diagram of the field curvature and distortion of the photographing optical lens shown in Fig. 5;

[0038] Fig. 9 is a schematic diagram of the structure of a photographing optical lens according to a third embodiment of the present application;

[0039] Fig. 10 is a schematic diagram of the axial aberration of the photographing optical lens shown in Fig. 9;

[0040] Fig. 11 is a schematic diagram of the magnification chromatic aberration of the photographing optical lens shown in Fig. 9;

[0041] Fig. 12 is a schematic diagram of the field curvature and distortion of the photographing optical lens shown in Fig. 9;

[0042] Fig. 13 is a schematic diagram of the structure of a photographing optical lens according to a fourth embodiment of the present application;

[0043] Fig. 14 is a schematic diagram of the axial aberration of the photographing optical lens shown in Fig. 13;

[0044] Fig. 15 is a schematic diagram of the magnification chromatic aberration of the photographing optical lens shown in Fig. 13;

[0045] Fig. 16 is a schematic diagram of the field curvature and distortion of the photographing optical lens shown in Fig. 13; DETAILED DESCRIPTION

[0046] In order to make the objects, technical solutions, and advantages of the present application clearer, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art can understand that, in the embodiments of the present application, many technical details are presented in order to make the readers better understand the present application. However, the technical solutions claimed by the present application can be implemented even without these technical details and based on various changes and modifications of the following embodiments.

[0047] With reference to Figs. 1-16, the technical solutions of the present application provide a photographing optical lens 10, 20, 30, 40. Figs. 1, 5, 9, 13 show the photographing optical lens 10, 20, 30, 40 of the present application, which comprises seven lenses in total. Specifically, the photographing optical lens, in order from the object side to the image side, comprises: 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 a filter GF can be arranged between the seventh lens L7 and the image plane Si.

[0048] The first lens L1 is made of glass, the second lens L2 is made of plastic, the third lens L3 is made of plastic, the fourth lens L4 is made of plastic, the fifth lens L5 is made of plastic, the sixth lens L6 is made of plastic, and the seventh lens L7 is made of plastic. By using glass and resin lenses in combination, the chromatic aberration is reduced, and the performance of the optical camera lens is improved. Each lens can also be made of other materials.

[0049] The first lens has positive refractive power, the object side surface thereof is convex at the near axis, and the image side surface thereof is concave at the near axis; the second lens has negative refractive power, the object side surface thereof is convex at the near axis, and the image side surface thereof is concave at the near axis; the third lens has negative refractive power, the object side surface thereof is concave at the near axis, and the image side surface thereof is concave at the near axis; the fourth lens has positive refractive power, the object side surface thereof is convex at the near axis, and the image side surface thereof is convex at the near axis; the fifth lens has negative refractive power, the object side surface thereof is convex at the near axis, and the image side surface thereof is concave at the near axis; the sixth lens has positive refractive power, the object side surface thereof is convex at the near axis, and the image side surface thereof is convex at the near axis; and the seventh lens has negative refractive power, the object side surface thereof is convex at the near axis, and the image side surface thereof is concave at the near axis. The object side surface and the image side surface of each lens can also be provided in other concave-convex distribution.

[0050] The object side surface and the image side surface 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 aspherical surfaces.

[0051] The axial distance from the image side surface of the seventh lens to the image plane is defined as BF, and the total length of the optical camera lens is defined as TTL, and the following relationship is satisfied: 0.16≤BF / TTL≤0.25. By reasonably configuring the back focus ratio of the optical system, the total length of the optical system is shortened to achieve miniaturization design, and the main ray incidence angle on the imaging plane of the outermost field of view is also reasonably controlled, avoiding the main ray incidence angle of the outermost field of view being too large to cause the relative luminance to decrease, thereby improving the imaging quality of the optical system.

[0052] The focal length of the sixth lens is defined as f6, the focal length of the seventh lens is defined as f7, the central curvature radius of the object side surface of the sixth lens at the near axis is defined as R11, and the central curvature radius of the object side surface of the seventh lens at the near axis is defined as R13. The following relationship is satisfied: 2.10≤f6 / R11-f7 / R13≤2.90. By reasonably controlling the relationship between the focal length and the object side surface near-axis curvature radius of the sixth lens and the seventh lens, the light incidence angle of the sixth lens and the seventh lens is reasonably designed, and the ultra-thin design is achieved.

[0053] The axial thickness of the first lens is defined as d1, the axial distance between the first lens and the second lens is defined as d2, and the axial thickness of the second lens is defined as d3, and the following relationship is satisfied: 3.50≤(d1+d3) / d2≤9.00. Within this range, good optical properties are achieved while also achieving wide angles and thinness.

[0054] The thickness of the first lens in the direction parallel to the optical axis at a radius of 1.5 mm is defined as d1 1.5 The thickness of the seventh lens in the direction parallel to the optical axis at a radius of 1.5 mm is defined as d13 1.5 The following relationship is satisfied: 0.90≤d1 1.5 / d13 1.5 ≤1.70. By appropriately controlling the ratio of the thicknesses of the first lens and the seventh lens in the direction parallel to the optical axis at a radius of 1.5 mm, the machinability of the lens is improved, and thinness is also achieved. Preferably, 1.00≤d1 1.5 / d13 1.5 ≤1.50 is satisfied.

[0055] The thickness of the second lens in the direction parallel to the optical axis at a radius of 1.5 mm is defined as d3 1.5 The thickness of the third lens in the direction parallel to the optical axis at a radius of 1.5 mm is defined as d5 1.5 The thickness of the fourth lens in the direction parallel to the optical axis at a radius of 1.5 mm is defined as d7 1.5 The thickness of the fifth lens in the direction parallel to the optical axis at a radius of 1.5 mm is defined as d9 1.5 The thickness of the sixth lens in the direction parallel to the optical axis at a radius of 1.5 mm is defined as d11 1.5 The following relationship is satisfied: 1.00≤(d3 1.5 +d5 1.5 +d7 1.5 ) / (d9 1.5 +d11 1.5 )≤1.80. By appropriately controlling the relationship between the thicknesses of the second to sixth lenses in the direction parallel to the optical axis at a radius of 1.5 mm, aberration correction is facilitated, and the total optical length is also shortened. Preferably, 1.20≤(d3 1.5 +d5 1.5 +d7 1.5 ) / (d9 1.5 +d11 1.5 )≤1.55 is satisfied.

[0056] The axial thickness of the seventh lens is defined as d13, and the thickness of the seventh lens in the direction parallel to the optical axis at a radius of 1.5 mm is defined as d13 1.5 The following relationship is satisfied: 1.10≤d13 1.5 / d13≤2.00, by reasonably controlling the ratio of the thickness of the seventh lens at a radius of 1.5 mm in a direction parallel to the optical axis to the central thickness, the processability of the lens is improved, and the production yield is improved. Preferably, 1.25≤d13 1.5 / d13≤1.80.

[0057] Define the focal length of the third lens as f3, the focal length of the fourth lens as f4, the on-axis thickness of the third lens as d5, and the on-axis thickness of the fourth lens as d7. The following relationship is satisfied: -120.00≤f3 / d5+f4 / d7≤-50.00. By reasonably controlling the ratio of the on-axis thicknesses and focal lengths of the third lens and the fourth lens, the wide angle is realized while the processing yield of the third lens and the fourth lens is improved. Preferably, -105.00≤f3 / d5+f4 / d7≤-60.00.

[0058] Define the central curvature radius of the object side surface of the fifth lens at the near axis as R9, and the central curvature radius of the image side surface of the fifth lens at the near axis as R10. The following relationship is satisfied: 3.10≤(R9+R10) / (R9-R10)≤8.50. Within this range, the surface shape of the fifth lens can be adjusted to control the direction of light travel, which helps to balance the field of view, volume, and image size. Preferably, 3.80≤(R9+R10) / (R9-R10)≤7.00.

[0059] Define the sum of the on-axis thicknesses of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens as Σd, and the total optical length of the camera optical lens as TTL. The following relationship is satisfied: 0.30≤Σd / TTL≤0.65. By reasonably controlling the ratio of the sum of the on-axis thicknesses of the lenses to the total optical length, the ultra-thin is realized. Preferably, 0.38≤Σd / TTL≤0.58.

[0060] Define the on-axis thickness of the first lens as d1, the on-axis thickness of the second lens as d3, and the on-axis thickness of the seventh lens as d13. The following relationship is satisfied: 1.20≤(d1+d3+d13) / d1≤2.30. By reasonably controlling the central thicknesses of the first lens, the second lens, and the seventh lens, the total optical length is shortened. Preferably, 1.50≤(d1+d3+d13) / d1≤2.00.

[0061] Define the focal length of the camera optical lens as f, and the combined focal length of the first lens and the second lens as f12. The following relationship is satisfied: 0.90≤f12 / f≤1.60. By reasonably configuring the focal lengths of the first lens L1 and the second lens L2, chromatic aberration is eliminated, spherical aberration is reduced, and astigmatism is corrected, improving the resolution. Preferably, 1.10≤f12 / f≤1.40.

[0062] Define the central curvature radius of the first lens object side surface at the paraxial region as R1, the central curvature radius of the first lens image side surface at the paraxial region as R2, and satisfy the following relationship: -2.50≤(R1+R2) / (R1-R2)≤-1.60. By reasonably controlling the shape of the first lens, the surface shape and refractive power of the first lens can be adjusted, which helps to receive light rays of a larger view angle. Preferably, -2.20≤(R1+R2) / (R1-R2)≤-1.90 is satisfied.

[0063] Define the on-axis thickness of the fourth lens as d7, the on-axis distance between the fourth lens and the fifth lens as d8, and the on-axis thickness of the fifth lens as d9, and satisfy the following relationship: 1.10≤(d7+d9) / d8≤2.10. By reasonably controlling the thickness and spacing of the fourth lens and the fifth lens, the assembly sensitivity of the fourth and fifth lenses can be reduced, and the assembly yield can be improved. Preferably, 1.40≤(d7+d9) / d8≤1.75 is satisfied.

[0064] Compared with the prior art, the camera optical lens provided by the application can shorten the total length of the optical system while avoiding excessive incidence angle of the chief ray of the outermost field of view, thereby improving the imaging quality of the optical system, by configuring 0.16≤BF / TTL≤0.25; 2.10≤f6 / R11-f7 / R13≤2.90; 3.50≤(d1+d3) / d2≤9.00; 0.90≤d1 1.5 / d13 1.5 ≤1.70; 1.00≤(d3 1.5 +d5 1.5 +d7 1.5 ) / (d9 1.5 +d11 1.5 )≤1.80; 1.10≤d13 1.5 / d13≤2.00.

[0065] Compared with the prior art, the camera optical lens provided by the application can shorten the total length of the optical system while avoiding excessive incidence angle of the chief ray of the outermost field of view, thereby improving the imaging quality of the optical system, by configuring 0.90≤d1 1.5 / d13 1.5 ≤1.70; 1.00≤(d3 1.5 +d5 1.5 +d7 1.5 ) / (d9 1.5 +d11 1.5 )≤1.80; 1.10≤ d131.5 / d13≤2.00; 0.30≤∑d / TTL≤0.65; 1.20≤(d1+d3+d13) / d1≤2.30; 0.90≤f12 / f≤1.60, which can eliminate chromatic aberration, reduce spherical aberration, correct astigmatism, improve resolving power, and control the thickness of each lens at a radius of 1.5 mm in a direction parallel to the optical axis, thereby improving the machinability of the lens, improving the production yield, and achieving ultra-thin.

[0066] The imaging optical lens of the present application will be described below with examples. The symbols described in each example are shown as follows. The units of focal length, on-axis distance, central curvature radius, and on-axis thickness are mm.

[0067] TTL: the total optical length of the imaging optical lens (the on-axis distance from the object side of the first lens L1 to the image plane Si), with the unit of mm;

[0068] FNO: the aperture value, which refers to the ratio of the effective focal length of the imaging optical lens to the entrance pupil diameter.

[0069] Next, the technical solutions of the present application will be described in detail in four embodiments. When the above conditions are exceeded, the technical effects of the present application cannot be achieved.

[0070] (First embodiment)

[0071] Table 1 and Table 2 show the design data of the imaging optical lens 10 of the first embodiment of the present application.

[0072]

Table 1

[0073] The meanings of the symbols are as follows.

[0074] S1: aperture;

[0075] R: the curvature radius at the center of the optical surface;

[0076] R1: the central curvature radius of the object side of the first lens L1 at the paraxial region;

[0077] R2: the central curvature radius of the image side of the first lens L1 at the paraxial region;

[0078] R3: the central curvature radius of the object side of the second lens L2 at the paraxial region;

[0079] R4: the central curvature radius of the image side of the second lens L2 at the paraxial region;

[0080] R5: the central curvature radius of the object side of the third lens L3 at the paraxial region;

[0081] R6: central radius of curvature of the object side surface of the third lens L3 at the paraxial region;

[0082] R7: central radius of curvature of the object side surface of the fourth lens L4 at the paraxial region;

[0083] R8: central radius of curvature of the image side surface of the fourth lens L4 at the paraxial region;

[0084] R9: central radius of curvature of the object side surface of the fifth lens L5 at the paraxial region;

[0085] R10: central radius of curvature of the image side surface of the fifth lens L5 at the paraxial region;

[0086] R11: central radius of curvature of the object side surface of the sixth lens L6 at the paraxial region;

[0087] R12: central radius of curvature of the image side surface of the sixth lens L6 at the paraxial region;

[0088] R13: central radius of curvature of the object side surface of the seventh lens L7 at the paraxial region;

[0089] R14: central radius of curvature of the image side surface of the seventh lens L7 at the paraxial region;

[0090] R15: central radius of curvature of the object side surface of the optical filter GF;

[0091] R16: central radius of curvature of the image side surface of the optical filter GF;

[0092] d: on-axis thickness of a lens, on-axis distance between lenses;

[0093] d0: on-axis distance from the stop S1 to the object side surface of the first lens L1;

[0094] d1: on-axis thickness of the first lens L1;

[0095] d2: on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;

[0096] d3: on-axis thickness of the second lens L2;

[0097] d4: on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3;

[0098] d5: on-axis thickness of the third lens L3;

[0099] d6: on-axis distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;

[0100] d7: on-axis thickness of the fourth lens L4;

[0101] d8: an on-axis distance from an image-side surface of the fourth lens L4 to an object-side surface of the fifth lens L5;

[0102] d9: an on-axis thickness of the fifth lens L5;

[0103] d10: an on-axis distance from an image-side surface of the fifth lens L5 to an object-side surface of the sixth lens L6;

[0104] d11: an on-axis thickness of the sixth lens L6;

[0105] d12: an on-axis distance from an image-side surface of the sixth lens L6 to an object-side surface of the seventh lens L7;

[0106] d13: an on-axis thickness of the seventh lens L7;

[0107] d14: an on-axis distance from an image-side surface of the seventh lens L7 to an object-side surface of the optical filter GF;

[0108] d15: an on-axis thickness of the optical filter GF;

[0109] d16: an on-axis distance from an image-side surface of the optical filter GF to the image plane Si;

[0110] nd: a refractive index for a d-line (the d-line is green light having a wavelength of 550 nm);

[0111] nd1: a refractive index for a d-line of the first lens L1;

[0112] nd2: a refractive index for a d-line of the second lens L2;

[0113] nd3: a refractive index for a d-line of the third lens L3;

[0114] nd4: a refractive index for a d-line of the fourth lens L4;

[0115] nd5: a refractive index for a d-line of the fifth lens L5;

[0116] nd6: a refractive index for a d-line of the sixth lens L6;

[0117] nd7: a refractive index for a d-line of the seventh lens L7;

[0118] ndg: a refractive index for a d-line of the optical filter GF;

[0119] vd: an Abbe number;

[0120] v1: an Abbe number of the first lens L1;

[0121] v2: an Abbe number of the second lens L2;

[0122] v3: an Abbe number of the third lens L3;

[0123] v4: Abbe number of the fourth lens L4;

[0124] v5: Abbe number of the fifth lens L5;

[0125] v6: Abbe number of the sixth lens L6;

[0126] v7: Abbe number of the seventh lens L7;

[0127] vg: Abbe number of the optical filter GF.

[0128] Table 2 shows aspherical surface data of each lens in the imaging optical lens 10 of the first embodiment of the present application.

[0129]

Table 2

[0130] For convenience, the aspherical surface of each lens surface uses the aspherical surface shown in the following formula (1). However, the present application is not limited to the aspherical polynomial form represented by the formula (1). 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 +A16r 16 +A18r 18 +A20r 20 +A22r 22 +A24r 24 +A26r 26 +A28r 28 +A30r 30 (1)

[0131] where k is a conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, A30 are aspherical coefficients, c is a curvature at the center of the optical surface, r is a perpendicular distance of a point on the aspherical curve from the optical axis, and z is an aspherical depth (a perpendicular distance between a point on the aspherical surface at a distance r from the optical axis and a tangent plane at the vertex of the aspherical surface).

[0132] Fig. 2 and Fig. 3 respectively show axial aberration and lateral chromatic aberration diagrams of light with wavelengths of 656 nm, 588 nm, 546 nm, 486 nm and 436 nm after passing through the camera optical lens 10 of the first embodiment. Fig. 4 shows field curvature and distortion diagrams of light with a wavelength of 546 nm after passing through the camera optical lens 10 of the first embodiment. The field curvature S of Fig. 4 is the sagittal direction field curvature, and the field curvature T is the tangential direction field curvature.

[0133] In the present embodiment, the entrance pupil diameter ENPD of the camera optical lens 10 is 4.901 mm, the 1.0 field image height IH is 8.000 mm, the MIC field image height IH is 8.290 mm, the 1.0 field diagonal direction field of view FOV is 84.13°, the MIC field diagonal direction field of view FOV is 86.10°, and the camera optical lens 10 meets the design requirements of strong processability and ultra-thin, and the on-axis and off-axis chromatic aberrations are fully corrected, and has excellent optical characteristics.

[0134] It can be understood that the 1.0 field image height refers to half of the diagonal length of the effective pixel area of the sensor, the MIC field image height refers to the field height expanded outside the 1.0 field image height for preventing assembly deviation, the 1.0 field diagonal direction FOV refers to the field of view angle corresponding to the effective pixel area of the sensor, and the MIC field diagonal direction FOV refers to the field of view angle corresponding to the MIC field image height.

[0135] (Second Embodiment)

[0136] The symbol meanings of the second embodiment are the same as those of the first embodiment.

[0137] Fig. 5 shows the camera optical lens 20 of the second embodiment of the present application.

[0138] Table 3 and Table 4 show the design data of the camera optical lens 20 of the second embodiment of the present application.

[0139]

Table 3

[0140] Table 4 shows the aspheric surface data of each lens in the camera optical lens 20 of the second embodiment of the present application.

[0141]

Table 4

[0142] Fig. 6 and Fig. 7 respectively show the axial aberration and the lateral chromatic aberration of light with wavelengths of 656 nm, 588 nm, 546 nm, 486 nm and 436 nm after passing through the imaging optical lens 20 of the second embodiment. Fig. 8 shows the field curvature and distortion of light with a wavelength of 546 nm after passing through the imaging optical lens 20 of the second embodiment. The field curvature S of Fig. 8 is the sagittal field curvature, and the field curvature T is the tangential field curvature.

[0143] In the present embodiment, the entrance pupil diameter ENPD of the imaging optical lens 20 is 4.868 mm, the full field (1.0 field) image height IH is 8.000 mm, the MIC field image height IH is 8.290 mm, the full field (1.0 field) angle of view FOV in the diagonal direction is 84.97°, the MIC field angle of view FOV in the diagonal direction is 87.18°, the imaging optical lens 20 meets the design requirements of strong processability and ultra-thin, the on-axis and off-axis chromatic aberrations are fully corrected, and has excellent optical characteristics.

[0144] (third embodiment)

[0145] The symbol meanings of the third embodiment are the same as those of the first embodiment.

[0146] Fig. 9 shows the imaging optical lens 30 of the third embodiment of the present application.

[0147] Table 5 and Table 6 show the design data of the imaging optical lens 30 of the third embodiment of the present application.

[0148]

Table 5

[0149] Table 6 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present application.

[0150]

Table 6

[0151] Fig. 10 and Fig. 11 respectively show the axial aberration and the lateral chromatic aberration of light with wavelengths of 656 nm, 588 nm, 546 nm, 486 nm and 436 nm after passing through the imaging optical lens 30 of the third embodiment. Fig. 12 shows the field curvature and distortion of light with a wavelength of 546 nm after passing through the imaging optical lens 30 of the third embodiment. The field curvature S of Fig. 12 is the sagittal field curvature, and the field curvature T is the tangential field curvature.

[0152] In the embodiment, the entrance pupil diameter ENPD of the photographing optical lens 30 is 4.882 mm, the full field (1.0 field) image height IH is 8.000 mm, the MIC field image height IH is 8.290 mm, the full field (1.0 field) angle of view FOV in diagonal direction is 84.20°, the MIC field angle of view FOV in diagonal direction is 86.07°, the photographing optical lens 30 meets the design requirements of strong machinability and ultra-thin, the on-axis and off-axis chromatic aberrations are fully corrected, and the photographing optical lens 30 has excellent optical characteristics.

[0153] (Fourth Embodiment)

[0154] The symbols in the fourth embodiment are the same as those in the first embodiment.

[0155] FIG. 13 shows the photographing optical lens 40 of the fourth embodiment of the present application.

[0156] Tables 7 and 8 show the design data of the photographing optical lens 40 of the fourth embodiment of the present application.

[0157] [Table 7]

[0158] Table 8 shows the aspheric surface data of each lens in the photographing optical lens 40 of the fourth embodiment of the present application.

[0159] [Table 8]

[0160] FIGS. 14 and 15 respectively show the axial aberration and the magnification chromatic aberration diagrams of the light with wavelengths of 656 nm, 588 nm, 546 nm, 486 nm and 436 nm passing through the photographing optical lens 40 of the fourth embodiment. FIG. 16 shows the field curvature and distortion diagrams of the light with a wavelength of 546 nm passing through the photographing optical lens 40 of the fourth embodiment. The field curvature S in FIG. 16 is the sagittal direction field curvature, and T is the tangential direction field curvature.

[0161] In the embodiment, the entrance pupil diameter ENPD of the photographing optical lens 40 is 4.923 mm, the full field (1.0 field) image height IH is 8.000 mm, the MIC field image height IH is 8.200 mm, the full field (1.0 field) angle of view FOV in diagonal direction is 83.52°, the MIC field angle of view FOV in diagonal direction is 84.97°, the photographing optical lens 40 meets the design requirements of strong machinability and ultra-thin, the on-axis and off-axis chromatic aberrations are fully corrected, and the photographing optical lens 40 has excellent optical characteristics.

[0162] The subsequently appearing Table 9 shows the values corresponding to the parameters specified in the various numerical values and conditions in the first, second, third and fourth embodiments.

[0163]

Table 9

[0164] It will be appreciated by those skilled in the art that the above embodiments are merely illustrative of the principles of the application and that various modifications can be made by those skilled in the art without departing from the spirit and scope of the application.

Claims

1. A camera optical lens characterized in that, The photographing optical lens comprises seven lenses in sequence from the object side to the image side: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power; the object side surface of the first lens is convex at the near-axis, and the image side surface is concave at the near-axis; the object side surface of the second lens is convex at the near-axis, and the image side surface is concave at the near-axis; the object side surface of the third lens is concave at the near-axis, and the image side surface is concave at the near-axis; the object side surface of the fourth lens is convex at the near-axis, and the image side surface is convex at the near-axis; the object side surface of the fifth lens is convex at the near-axis, and the image side surface is concave at the near-axis; the object side surface of the sixth lens is convex at the near-axis, and the image side surface is convex at the near-axis; the object side surface of the seventh lens is convex at the near-axis, and the image side surface is concave at the near-axis. BF / TTL < 0.5, f6 / f7 > 0.5, R11 / R13 > 0.5, d1 / d2 < 0.5, d3 / d2 > 0.5, d5 / d2 > 0.5, d7 / d2 > 0.5, d9 / d2 > 0.5, d11 / d2 > 0.5, d13 / d2 > 0.5, and satisfy the following relational expressions: 0.5 < d1 / d2 < 1.5, 0.5 < d3 / d2 < 1.5, 0.5 < d5 / d2 < 1.5, 0.5 < d7 / d2 < 1.5, 0.5 < d9 / d2 < 1.5, 0.5 < d11 / d2 < 1.5, 0.5 < d13 / d2 < 1.5, 0.5 < d1 / d3 < 1.5, 0.5 < d5 / d3 < 1.5, 0.5 < d7 / d3 < 1.5, 0.5 < d9 / d3 < 1.5, 0.5 < d11 / d3 < 1.5, 0.5 < d13 / d3 < 1.5, 0.5 < d1 / d5 < 1.5, 0.5 < d7 / d5 < 1.5, 0.5 < d9 / d5 < 1.5, 0.5 < d11 / d5 < 1.5, 0.5 < d13 / d5 < 1.5, 0.5 < d1 / d7 < 1.5, 0.5 < d9 / d7 < 1.5, 0.5 < d11 / d7 < 1.5, 0.5 < d13 / d7 < 1.5, 0.5 < d1 / d9 < 1.5, 0.5 < d11 / d9 < 1.5, 0.5 < d13 / d9 < 1.5, 0.5 < d1 / d11 < 1.5, 0.5 < d13 / d11 < 1.5, and 0.5 < d1 / d13 < 1.

5. 1.5 1.5 1.5 1.5 1.5 1.5 1.5 ​​​​​​​ 0.16≤BF / TTL≤0.25; 2.10≤f6 / R11-f7 / R13≤2.90; 3.50≤(d1+d3) / d2≤9.00; 0.90 < d1 1.5 / d13 1.5 ≤ 1.70; 1.00 ≤ (d3 1.5 +d5 1.5 +d7 1.5 ) / (d9 1.5 +d11 1.5 ) ≤ 1.80; 1.10 < d13 1.5 / d13 < 2.

00.

2. The camera optical lens according to claim 1, characterized in that, satisfies the following relationship: 1.00 ≤ d1 1.5 / d13 1.5 ≤ 1.

50.

3. The camera optical lens according to claim 1, wherein, satisfies the following relationship: 1.20 ≤ (d3 1.5 +d5 1.5 +d7 1.5 ) / (d9 1.5 +d11 1.5 ) ≤ 1.

55.

4. The camera optical lens according to claim 1, characterized in that, satisfies the following relationship: 1.25 ≤ d13 1.5 / d13≤1.

80.

5. The camera optical lens according to claim 1, characterized in that, The focal length of the third lens is f3, the focal length of the fourth lens is f4, the on-axis thickness of the third lens is d5, and the on-axis thickness of the fourth lens is d7, and the following relationship is satisfied: -120.00≤f3 / d5+f4 / d7≤-50.

00.

6. The camera optical lens according to claim 1, characterized in that, The central curvature radius of the object side surface of the fifth lens at the near-axis is R9, the central curvature radius of the image side surface of the fifth lens at the near-axis is R10, and the following relationship is satisfied: 3.10≤(R9+R10) / (R9-R10)≤8.

50.

7. The camera optical lens according to claim 5, characterized in that, The following relationship is satisfied: -105.00≤f3 / d5+f4 / d7≤-60.

00.

8. The camera optical lens according to claim 6, characterized in that, The following relationship is satisfied: 3.80≤(R9+R10) / (R9-R10)≤7.

00.

9. The camera optical lens according to claim 1, characterized in that, The first lens is made of glass.

10. A camera optical lens characterized in that, The photographing optical lens comprises seven lenses in sequence from the object side to the image side: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power; the object side surface of the first lens is convex at the near-axis, and the image side surface is concave at the near-axis; the object side surface of the second lens is convex at the near-axis, and the image side surface is concave at the near-axis; the object side surface of the third lens is concave at the near-axis, and the image side surface is concave at the near-axis; the object side surface of the fourth lens is convex at the near-axis, and the image side surface is convex at the near-axis; the object side surface of the fifth lens is convex at the near-axis, and the image side surface is concave at the near-axis; the object side surface of the sixth lens is convex at the near-axis, and the image side surface is convex at the near-axis; the object side surface of the seventh lens is convex at the near-axis, and the image side surface is concave at the near-axis. Wherein, the focal length of the camera optical lens is f, the combined focal length of the first lens and the second lens is f12, the on-axis thickness of the first lens is d1, the on-axis thickness of the second lens is d3, the on-axis thickness of the seventh lens is d13, the thickness of the first lens at a radius of 1.5 mm in a direction parallel to the optical axis is d1 1.5 , the thickness of the second lens at a radius of 1.5 mm in a direction parallel to the optical axis is d3 1.5 , the thickness of the third lens at a radius of 1.5 mm in a direction parallel to the optical axis is d5 1.5 , the thickness of the fourth lens at a radius of 1.5 mm in a direction parallel to the optical axis is d7 1.5 , the thickness of the fifth lens at a radius of 1.5 mm in a direction parallel to the optical axis is d9 1.5 , the thickness of the sixth lens at a radius of 1.5 mm in a direction parallel to the optical axis is d11 1.5 , the thickness of the seventh lens at a radius of 1.5 mm in a direction parallel to the optical axis is d13 1.5 , the sum of the on-axis thicknesses of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens is Σd, the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: 0.90 < d1 1.5 / d13 1.5 ≤1.70; 1.00 < (d3 1.5 +d5 1.5 +d7 1.5 ) / (d9 1.5 +d11 1.5 ) < 1.80; 1.10 < d13 1.5 d13 < 2.00; 0.30≤Σd / TTL≤0.65; 1.20 ≤ (d1+d3+d13) / d1 ≤ 2.30; 0.90 ≤ f12 / f ≤ 1.

60.

11. The camera optical lens according to claim 10, characterized in that, The following relational expression is satisfied: 0.38 ≤ Σd / TTL ≤ 0.

58.

12. The camera optical lens according to claim 10, characterized in that, The following relational expression is satisfied: 1.50 ≤ (d1+d3+d13) / d1 ≤ 2.

00.

13. The camera optical lens according to claim 10, characterized in that, The following relational expression is satisfied: 1.10 ≤ f12 / f ≤ 1.

40.

14. The camera optical lens according to claim 10, characterized in that, satisfies the following relationship: 1.00 ≤ d1 1.5 / d13 1.5 ≤ 1.

50.

15. The camera optical lens according to claim 10, characterized in that, satisfies the following relationship: 1.20 ≤ (d3 1.5 +d5 1.5 +d7 1.5 ) / (d9 1.5 +d11 1.5 ) ≤ 1.

55.

16. The camera optical lens according to claim 10, characterized in that, satisfies the following relationship: 1.25 ≤ d13 1.5 / d13≤1.

80.

17. The camera optical lens according to claim 10, characterized in that, A central curvature radius of the first lens object side surface at a paraxial region is R1, a central curvature radius of the first lens image side surface at the paraxial region is R2, and the following relational expression is satisfied: -2.50 ≤ (R1+R2) / (R1-R2) ≤ -1.

60.

18. The camera optical lens according to claim 10, characterized in that, An on-axis thickness of the fourth lens is d7, an on-axis distance between the fourth lens and the fifth lens is d8, and an on-axis thickness of the fifth lens is d9, and the following relational expression is satisfied: 1.10 ≤ (d7+d9) / d8 ≤ 2.

10.

19. The camera optical lens according to claim 17, characterized in that, The following relational expression is satisfied: -2.20 ≤ (R1+R2) / (R1-R2) ≤ -1.

90.

20. The camera optical lens according to claim 18, characterized in that, The following relational expression is satisfied: 1.40 ≤ (d7+d9) / d8 ≤ 1.

75.

21. The camera optical lens according to claim 10, characterized in that, The first lens is made of glass.

Images