Videographic optical lens

Abstract

The present invention relates to the field of optical lenses. Disclosed is a videographic optical lens, comprising a total of seven lenses which are, successively from an object side to an 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, and satisfy: -0.25≤f12 / f34567≤0.05, 0.13≤|TEP / SAG11|*(f / R1)≤2.80, 0.15≤SZD1 / HZD1≤0.30, and 0.07≤SZD2 / HZD2≤0.25.

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 camera devices such as monitor lenses, PC lenses, vehicle-mounted lenses, etc. BACKGROUND

[0002] In recent years, with the rise of various intelligent devices, the demand for small-sized camera optical lenses is increasing, and due to the reduction of the pixel size of photosensitive devices, in addition to the current trend of electronic products being light and thin, the small-sized camera optical lenses with good imaging quality have 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 continuous improvement of the imaging quality requirements of the system, seven-piece lens structure gradually appears in the lens design. There is an urgent need for optical camera lenses with excellent optical characteristics, small aberration, high light throughput, good processability, low assembly sensitivity. TECHNICAL PROBLEM

[0003] In view of the above problems, the purpose of the present application is to provide a camera optical lens which has good optical performance while meeting the design requirements of small aberration, high light throughput, good processability and low assembly sensitivity. TECHNICAL SOLUTION

[0004] To achieve the above purpose, the technical scheme of the present application provides a camera optical lens, which comprises an aperture stop and seven lenses, the seven lenses are sequentially arranged 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.

[0005] In the formula, f12 is a combined focal length of the first lens and the second lens, f34567 is a combined focal length of the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens, TEP is a distance from the aperture stop to the center of the object side of the first lens along the optical axis, SAG11 is a sag at the maximum optical radius of the object side of the first lens, f is a focal length of the photographing optical lens, R1 is a central curvature radius of the object side of the first lens at the paraxial region, the object side and the image side of the sixth lens each include at least one critical point, the critical point of the object side of the sixth lens closest to the optical axis is a first object side critical point, HZD1 is a perpendicular distance from the optical axis to the first object side critical point, SZD1 is a sag of the first object side critical point, the critical point of the image side of the sixth lens closest to the optical axis is a first image side critical point, HZD2 is a perpendicular distance from the optical axis to the first image side critical point, SZD2 is a sag of the first image side critical point, f5 is a focal length of the fifth lens, f6 is a focal length of the sixth lens, d2 is an on-axis distance between the image side of the first lens and the object side of the second lens, d4 is an on-axis distance between the image side of the second lens and the object side of the third lens, d6 is an on-axis distance between the image side of the third lens and the object side of the fourth lens, SAG51 is a sag at the maximum optical radius of the object side of the fifth lens, d8 is an on-axis distance between the image side of the fourth lens and the object side of the fifth lens, and the following relationships are met: -0.25≤f12 / f34567≤0.05; 0.13≤|TEP / SAG11|*(f / R1)≤2.80; 0.15≤SZD1 / HZD1≤0.30; 0.07≤SZD2 / HZD2≤0.25; -5.00≤(f5-f6) / f≤-1.40; 1.20≤d4 / (d2+d6)≤2.00; -1.50≤SAG51 / d8≤-0.90.

[0006] Preferably, the following relationship is met: -0.21≤f12 / f34567≤0.04.

[0007] Preferably, the following relationship is met: 0.15≤|TEP / SAG11|*(f / R1)≤2.50.

[0008] Preferably, the following relationship is met: 0.18≤SZD1 / HZD1≤0.25.

[0009] Preferably, the following relationship is met: 0.08≤SZD2 / HZD2≤0.22.

[0010] Preferably, the following relationship is met: -4.40≤(f5-f6) / f≤-1.70.

[0011] Preferably, the following relationship is satisfied: 1.30≤d4 / (d2+d6)≤1.85.

[0012] Preferably, the following relationship is satisfied: -1.25≤SAG51 / d8≤-0.95.

[0013] Preferably, the sagittal height at the maximum optical radius of the object side surface of the sixth lens is SAG61, the sagittal height at the maximum optical radius of the image side surface of the sixth lens is SAG62, the on-axis thickness of the sixth lens is d11, and the following relationship is satisfied: 0.20≤(SAG61-SAG62) / d11≤0.50.

[0014] Preferably, the following relationship is satisfied: 0.23≤(SAG61-SAG62) / d11≤0.45.

[0015] Preferably, the central curvature radius of the object side surface of the second lens at the paraxial region is R3, 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: 0.28≤R3 / R10≤2.65.

[0016] Preferably, the following relationship is satisfied: 0.33≤R3 / R10≤2.28.

[0017] Preferably, the first lens is made of glass.

[0018] To achieve the above object, the technical scheme of the present application further provides a camera optical lens, which comprises an aperture stop and seven lenses, and 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.

[0019] In the formula, f12 is a combined focal length of the first lens and the second lens, f34567 is a combined focal length of the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens, TEP is a distance from the aperture stop to the center of the object side of the first lens along the optical axis, SAG11 is a sag of the object side of the first lens at the maximum optical radius, f is a focal length of the photographing optical lens, R1 is a central curvature radius of the object side of the first lens at the paraxial region, the object side and the image side of the sixth lens each include at least one critical point, the critical point of the object side of the sixth lens closest to the optical axis is a first object side critical point, a vertical distance of the first object side critical point from the optical axis is HZD1, a sag of the first object side critical point is SZD1, the critical point of the image side of the sixth lens closest to the optical axis is a first image side critical point, a vertical distance of the first image side critical point from the optical axis is HZD2, a sag of the first image side critical point is SZD2, the object side and the image side of the sixth lens each include at least one inflection point, the object side of the sixth lens includes a first object side inflection point closest to the optical axis and a second object side inflection point outside the first object side inflection point, a vertical distance of the first object side inflection point from the optical axis is HFD1, a sag of the first object side inflection point is SFD1, a vertical distance of the second object side inflection point from the optical axis is HFD2, a sag of the second object side inflection point is SFD2, the image side of the sixth lens includes a first image side inflection point closest to the optical axis, a vertical distance of the first image side inflection point from the optical axis is HFD3, a sag of the first image side inflection point is SFD3, and the following relationships are met: -0.25≤f12 / f34567≤0.05; 0.13≤|TEP / SAG11|*(f / R1)≤2.80; 0.15≤SZD1 / HZD1≤0.30; 0.07≤SZD2 / HZD2≤0.25; 0.15≤SFD1 / HFD1≤0.28; -0.12≤SFD2 / HFD2≤0.002; 0.10≤SFD3 / HFD3≤0.45.

[0020] Preferably, the following relationship is met: -0.21≤f12 / f34567≤0.04.

[0021] Preferably, the following relationship is met: 0.15≤|TEP / SAG11|*(f / R1)≤2.50.

[0022] Preferably, the following relationship is met: 0.18≤SZD1 / HZD1≤0.25.

[0023] Preferably, the following relationship is met: 0.08≤SZD2 / HZD2≤0.22.

[0024] Preferably, the following relationship is satisfied: 0.18≤SFD1 / HFD1≤0.25.

[0025] Preferably, the following relationship is satisfied: -0.10≤SFD2 / HFD2≤0.002.

[0026] Preferably, the following relationship is satisfied: 0.11≤SFD3 / HFD3≤0.38.

[0027] Preferably, the focal length of the sixth lens is f6, the on-axis thickness of the sixth lens is d11, and the following relationship is satisfied: 6.58≤f6 / d11≤11.78.

[0028] Preferably, the following relationship is satisfied: 7.69≤f6 / d11≤9.85.

[0029] Preferably, the first lens is made of glass. Advantages

[0030] The camera lens according to the present application has excellent optical characteristics, and has the characteristics of small aberration, high light throughput, good machinability, low assembly sensitivity aperture stop, wide angle, and ultra-thin, and is particularly suitable for mobile phone camera lens assemblies, WEB camera lenses, and vehicle-mounted lenses composed of high-pixel CCD, CMOS, and other camera elements. BRIEF DESCRIPTION OF DRAWINGS

[0031] 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 creative effort based on these drawings.

[0032] FIG. 1 is a structural schematic diagram of a camera lens according to a first embodiment of the present application;

[0033] FIG. 2 is an axial aberration schematic diagram of the camera lens shown in FIG. 1;

[0034] FIG. 3 is a magnification chromatic aberration schematic diagram of the camera lens shown in FIG. 1;

[0035] FIG. 4 is a field curvature and distortion schematic diagram of the camera lens shown in FIG. 1;

[0036] FIG. 5 is a structural schematic diagram of a camera lens according to a second embodiment of the present application;

[0037] FIG. 6 is an axial aberration schematic diagram of the camera lens shown in FIG. 5;

[0038] Fig. 7 is a schematic view of the lateral chromatic aberration of the photographing optical lens shown in Fig. 5;

[0039] Fig. 8 is a schematic view of the field curvature and distortion of the photographing optical lens shown in Fig. 5;

[0040] Fig. 9 is a schematic view of the structure of a photographing optical lens according to a third embodiment of the present application;

[0041] Fig. 10 is a schematic view of the axial aberration of the photographing optical lens shown in Fig. 9;

[0042] Fig. 11 is a schematic view of the lateral chromatic aberration of the photographing optical lens shown in Fig. 9;

[0043] Fig. 12 is a schematic view of the field curvature and distortion of the photographing optical lens shown in Fig. 9;

[0044] Fig. 13 is a schematic view of the structure of a photographing optical lens according to a fourth embodiment of the present application;

[0045] Fig. 14 is a schematic view of the axial aberration of the photographing optical lens shown in Fig. 13;

[0046] Fig. 15 is a schematic view of the lateral chromatic aberration of the photographing optical lens shown in Fig. 13;

[0047] Fig. 16 is a schematic view of the field curvature and distortion of the photographing optical lens shown in Fig. 13;

[0048] Fig. 17 is a schematic view of the structure of a photographing optical lens according to a fifth embodiment of the present application;

[0049] Fig. 18 is a schematic view of the axial aberration of the photographing optical lens shown in Fig. 17;

[0050] Fig. 19 is a schematic view of the lateral chromatic aberration of the photographing optical lens shown in Fig. 17;

[0051] Fig. 20 is a schematic view of the field curvature and distortion of the photographing optical lens shown in Fig. 17. Embodiments of the present application

[0052] 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 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.

[0053] With reference to FIGS. 1-20, the technical scheme of the present application provides a camera optical lens 10, 20, 30, 40, 50. FIGS. 1, 5, 9, 13, 17 show the camera optical lens 10, 20, 30, 40, 50, which comprises seven lenses. Specifically, the camera optical lens, from the object side to the image side, comprises an aperture stop S1, a first lens L1, a second lens L2, a third lens L3, an aperture stop S1, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. An optical filter GF or other optical element can be arranged between the seventh lens L7 and the image plane Si.

[0054] 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. Each lens can also be made of other materials.

[0055] The object side and the image side 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.

[0056] The refractive powers 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 positive, negative, negative, positive, negative, positive, and negative, respectively. The object side of the first lens L1 is a convex surface, and the image side is a concave surface. The object side of the second lens L2 is a convex surface, and the image side is a concave surface. The image side of the third lens L3 is a concave surface, and the object side of the third lens L3 can be a concave surface or a convex surface. The object side of the fourth lens L4 is a convex surface, and the image side is a convex surface. The image side of the fifth lens L5 is a concave surface, and the object side of the fifth lens L5 can be a concave surface or a convex surface. The object side of the sixth lens L6 is a convex surface, and the image side of the sixth lens L6 can be a concave surface or a convex surface. The image side of the seventh lens L7 is a concave surface, and the object side of the seventh lens L7 can be a concave surface or a convex surface.

[0057] The combined focal length of the first lens L1 and the second lens L2 is defined as f12, and the combined focal length of the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the seventh lens L7 is defined as f34567, and the following relationship is satisfied: -0.25≤f12 / f34567≤0.05; further satisfying: -0.21≤f12 / f34567≤0.04, within the conditional formula range, the proportional relationship between the combined focal length of the first lens L1 and the second lens L2 and the combined focal length of the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the seventh lens L7 is reasonably set, which is beneficial to the reasonable distribution of the focal power of each lens in space, and reduces the optical system aberration.

[0058] The distance of the center of the aperture stop to the object side surface of the first lens L1 in the direction of the optical axis is defined as TEP, the sag of the maximum optical radius of the object side surface of the first lens L1 is defined as SAG11, the focal length of the imaging optical lens is defined as f, and the central curvature radius of the object side surface of the first lens L1 at the near axis is defined as R1, and the following relationship is satisfied: 0.13≤|TEP / SAG11|*(f / R1)≤2.80; further satisfying: 0.15≤|TEP / SAG11|*(f / R1)≤2.50, within the conditional formula range, the position of the aperture stop and the sag of the object side surface of the first lens are reasonably controlled, so that the imaging optical lens has a higher light intake, and at the same time, the object side surface of the first lens has a reasonable curvature, which is beneficial to improve the processing rate, and the system focal length is controlled within a reasonable range.

[0059] The critical point closest to the optical axis of the object side surface of the sixth lens L6 is defined as the first object side critical point, the vertical distance of the first object side critical point from the optical axis is defined as HZD1, and the sag of the first object side critical point is defined as SZD1, and the following relationship is satisfied: 0.15≤SZD1 / HZD1≤0.30; further satisfying: 0.18≤SZD1 / HZD1≤0.25, within the conditional formula range, the shape of the object side surface of the sixth lens is reasonably controlled, especially the ratio of the sag and the height of the first off-axis critical point, which is beneficial to correcting the aberration caused by the first five lenses.

[0060] The critical point closest to the optical axis of the image side surface of the sixth lens L6 is defined as the first image side critical point, the vertical distance of the first image side critical point from the optical axis is defined as HZD2, and the sag of the first image side critical point is defined as SZD2, and the following relationship is satisfied: 0.07≤SZD2 / HZD2≤0.25; further satisfying: 0.08≤SZD2 / HZD2≤0.22, within the conditional formula range, the shape of the image side surface of the sixth lens is reasonably controlled, especially the ratio of the sag and the height of the first off-axis critical point, which is beneficial to adjusting the direction of the light after passing through, so that the light transitions smoothly between the sixth lens and the seventh lens, and reduces the assembly sensitivity between the sixth lens and the seventh lens.

[0061] The focal length of the fifth lens L5 is defined as f5, and the focal length of the sixth lens is defined as f6. The following relationship is satisfied: -5.00≤(f5-f6) / f≤-1.40. Further, the following relationship is satisfied: -4.40≤(f5-f6) / f≤-1.70. Within the conditional expression range, the spherical aberration generated by the fifth lens and the sixth lens can be balanced.

[0062] The on-axis distance between the image side surface of the first lens L1 and the object side surface of the second lens L2 is defined as d2, the on-axis distance between the image side surface of the second lens L2 and the object side surface of the third lens L3 is defined as d4, and the on-axis distance between the image side surface of the third lens L3 and the object side surface of the fourth lens L4 is defined as d6. The following relationship is satisfied: 1.20≤d4 / (d2+d6)≤2.00. Further, the following relationship is satisfied: 1.30≤d4 / (d2+d6)≤1.85. Within the conditional expression range, the air gap of the first to fourth lenses is reasonably set, the periphery structure of the lenses, in particular, the thickness of the periphery, is reasonably designed, and the design of the connecting structure between the lenses is diversified.

[0063] The sagittal height at the maximum optical radius of the object side surface of the fifth lens L5 is defined as SAG51, and the on-axis distance between the image side surface of the fourth lens L4 and the object side surface of the fifth lens L5 is defined as d8. The following relationship is satisfied: -1.50≤SAG51 / d8≤-0.90. Further, the following relationship is satisfied: -1.25≤SAG51 / d8≤-0.95. Within the conditional expression range, the on-axis distance between the fourth lens and the fifth lens and the sagittal height at the maximum optical radius of the object side surface of the fifth lens are reasonably controlled, and interference between the fourth lens and the fifth lens is avoided.

[0064] The sagittal height at the maximum optical radius of the object side surface of the sixth lens L6 is defined as SAG61, the sagittal height at the maximum optical radius of the image side surface of the sixth lens L6 is defined as SAG62, and the on-axis thickness of the sixth lens is defined as d11. The following relationship is satisfied: 0.20≤(SAG61-SAG62) / d11≤0.50. Further, the following relationship is satisfied: 0.23≤(SAG61-SAG62) / d11≤0.45. Within the conditional expression range, the shape of the sixth lens is reasonably controlled, and the machinability is improved.

[0065] The central curvature radius of the object side surface of the second lens L2 at the near axis is defined as R3, and the central curvature radius of the image side surface of the fifth lens L5 at the near axis is defined as R10. The following relationship is satisfied: 0.28≤R3 / R10≤2.65. Further, the following relationship is satisfied: 0.33≤R3 / R10≤2.28. Within the conditional expression range, the correction of chromatic aberration is facilitated, and the balance of various aberrations can be achieved.

[0066] The sixth lens L6 object side surface includes a first object side inflection point closest to the optical axis and a second object side inflection point outside the first object side inflection point, the vertical distance of the first object side inflection point from the optical axis is defined as HFD1, the sag of the first object side inflection point is defined as SFD1, and the following relationship is satisfied: 0.15≤SFD1 / HFD1≤0.28; further satisfying: 0.18≤SFD1 / HFD1≤0.25, within the conditional range, the shape of the sixth lens object side surface is reasonably controlled, especially the ratio of the sag and height of the first off-axis inflection point, which is beneficial to correcting the aberration caused by the first five lenses.

[0067] The vertical distance of the second object side inflection point from the optical axis is defined as HFD2, the sag of the second object side inflection point is defined as SFD2, and the following relationship is satisfied: -0.12≤SFD2 / HFD2≤0.002; further satisfying: -0.10≤SFD2 / HFD2≤0.002, within the conditional range, the shape of the sixth lens object side surface is reasonably controlled, especially the ratio of the sag and height of the second off-axis inflection point, which is beneficial to correcting the aberration caused by the first five lenses, especially the field curvature.

[0068] The sixth lens L6 image side surface includes a first image side inflection point closest to the optical axis, the vertical distance of the first image side inflection point from the optical axis is defined as HFD3, the sag of the first image side inflection point is defined as SFD3, and the following relationship is satisfied: 0.10≤SFD3 / HFD3≤0.45; further satisfying: 0.11≤SFD3 / HFD3≤0.38, within the conditional range, the shape of the sixth lens image side surface is reasonably controlled, especially the ratio of the sag and height of the first off-axis inflection point, which is beneficial to adjusting the direction of the light after passing through, so that the large field of view light can reach a higher position of the seventh lens, increasing the field of view angle.

[0069] The focal length of the sixth lens L6 is defined as f6, and the on-axis thickness of the sixth lens is defined as d11, and the following relationship is satisfied: 6.58≤f6 / d11≤11.78; further satisfying: 7.69≤f6 / d11≤9.85, by controlling the ratio of the effective focal length of the sixth lens and the central thickness of the sixth lens on the optical axis, the diameter-thickness ratio parameter of the sixth lens can be controlled within a reasonable range, which is beneficial to lens forming for large lenses, reducing stress residue and poor appearance.

[0070] The first lens L1 is made of glass, which is matched with the resin lens by using the Abbe number of glass, so as to reduce chromatic aberration and improve the performance of the optical camera lens.

[0071] Compared with the prior art, the camera optical lens provided by the application can realize the technical effects of reducing optical system aberration, making the camera optical lens have higher light intake, simultaneously making the first lens have reasonable curvature on the object side, improving the processing yield, controlling the system focal length in a reasonable range, reducing the assembly sensitivity between the sixth lens and the seventh lens, balancing the spherical aberration generated by the fifth lens and the sixth lens, making the design of the connection structure between lenses more diversified, avoiding the interference of the fourth lens and the fifth lens, by configuring-0.25≤f12 / f34567≤0.05; 0.13≤|TEP / SAG11|*(f / R1)≤2.80; 0.15≤SZD1 / HZD1≤0.30; 0.07≤SZD2 / HZD2≤0.25; -5.00≤(f5-f6) / f≤-1.40; 1.20≤d4 / (d2+d6)≤2.00; -1.50≤SAG51 / d8≤-0.90.

[0072] In addition, compared with the prior art, the camera optical lens provided by the application can realize the technical effects of reducing optical system aberration, making the camera optical lens have higher light intake, simultaneously making the first lens have reasonable curvature on the object side, improving the processing yield, controlling the system focal length in a reasonable range, reducing the assembly sensitivity between the sixth lens and the seventh lens, correcting the aberration caused by the first five lenses, especially the field curvature, adjusting the direction of the light after passing through, making the large field of view light reach a higher position of the seventh lens, and increasing the technical effects of the field of view angle, by configuring-0.25≤f12 / f34567≤0.05; 0.13≤|TEP / SAG11|*(f / R1)≤2.80; 0.15≤SZD1 / HZD1≤0.30; 0.07≤SZD2 / HZD2≤0.25; 0.15≤SFD1 / HFD1≤0.28; -0.12≤SFD2 / HFD2≤0.002; 0.10≤SFD3 / HFD3≤0.45.

[0073] The camera optical lens of the application will be described below by examples. The symbols recorded in each example are as follows. The units of focal length, on-axis distance, central curvature radius, on-axis thickness, perpendicular distance of inflection point to optical axis, sag, perpendicular distance of critical point to optical axis, and sag are mm.

[0074] TTL: total optical length (on-axis distance from the object side of the first lens L1 to the image surface Si), unit: mm;

[0075] F-number FNO: refers to the ratio of the effective focal length of the camera optical lens to the entrance pupil diameter;

[0076] Sag: the distance of a point on the surface to the center point of the surface on the optical axis in the direction of the optical axis, positive on the right side of the center point and negative on the left side of the center point;

[0077] 1.0 view field image height: the view field height corresponding to the effective pixel of the sensor;

[0078] 1.0 view field FOV: the view field angle corresponding to the effective pixel of the sensor;

[0079] MIC view field image height: the view field height expanded by 1.0 for preventing assembly deviation;

[0080] MIC view field FOV: the view field angle corresponding to the MIC view field image height;

[0081] Maximum optical radius: the maximum radius reached by the MIC view field light on the lens surface.

[0082] Next, the technical solutions of the present application are specifically described in five embodiments, and the technical effects of the present application cannot be achieved when the above condition formula is exceeded.

[0083] (First embodiment)

[0084] Table 1 and Table 2 show the design data of the camera optical lens 10 of the first embodiment of the present application.

Table 1

[0085] Wherein, the meanings of each symbol are as follows.

[0086] S1: aperture stop;

[0087] R: radius of curvature at the center of the optical surface;

[0088] R1: central radius of curvature of the object side surface of the first lens L1;

[0089] R2: central radius of curvature of the image side surface of the first lens L1;

[0090] R3: central radius of curvature of the object side surface of the second lens L2;

[0091] R4: central radius of curvature of the image side surface of the second lens L2;

[0092] R5: central radius of curvature of the object side surface of the third lens L3;

[0093] R6: central radius of curvature of the image side surface of the third lens L3;

[0094] R7: central radius of curvature of the object side surface of the fourth lens L4;

[0095] R8: central radius of curvature of the image side surface of the fourth lens L4;

[0096] R9: central radius of curvature of the object side surface of the fifth lens L5;

[0097] R10: central radius of curvature of the image side surface of the fifth lens L5;

[0098] R11: central radius of curvature of the object side surface of the sixth lens L6;

[0099] R12: central radius of curvature of the image side surface of the sixth lens L6;

[0100] R13: central radius of curvature of the object side surface of the seventh lens L7;

[0101] R14: central radius of curvature of the image side surface of the seventh lens L7;

[0102] R15: central radius of curvature of the object side surface of the optical filter GF;

[0103] R16: central radius of curvature of the image side surface of the optical filter GF;

[0104] d: on-axis thickness of a lens, on-axis distance between lenses;

[0105] d0: on-axis distance from the aperture stop S1 to the object side surface of the first lens L1;

[0106] d1: on-axis thickness of the first lens L1;

[0107] d2: on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;

[0108] d3: on-axis thickness of the second lens L2;

[0109] d4: on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3;

[0110] d5: on-axis thickness of the third lens L3;

[0111] d6: on-axis distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;

[0112] d7: on-axis thickness of the fourth lens L4;

[0113] d8: on-axis distance from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;

[0114] d9: on-axis thickness of the fifth lens L5;

[0115] d10: on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;

[0116] d11: on-axis thickness of the sixth lens L6;

[0117] 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;

[0118] d13: an on-axis thickness of the seventh lens L7;

[0119] 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;

[0120] d15: an on-axis thickness of the optical filter GF;

[0121] d16: an on-axis distance from an image-side surface of the optical filter GF to the image plane Si;

[0122] nd: a refractive index at the d-line (the d-line is green light having a wavelength of 550 nm);

[0123] nd1: a refractive index at the d-line of the first lens L1;

[0124] nd2: a refractive index at the d-line of the second lens L2;

[0125] nd3: a refractive index at the d-line of the third lens L3;

[0126] nd4: a refractive index at the d-line of the fourth lens L4;

[0127] nd5: a refractive index at the d-line of the fifth lens L5;

[0128] nd6: a refractive index at the d-line of the sixth lens L6;

[0129] nd7: a refractive index at the d-line of the seventh lens L7;

[0130] ndg: a refractive index at the d-line of the optical filter GF;

[0131] vd: an Abbe number;

[0132] v1: an Abbe number of the first lens L1;

[0133] v2: an Abbe number of the second lens L2;

[0134] v3: an Abbe number of the third lens L3;

[0135] v4: an Abbe number of the fourth lens L4;

[0136] v5: an Abbe number of the fifth lens L5;

[0137] v6: an Abbe number of the sixth lens L6;

[0138] v7: an Abbe number of the seventh lens L7;

[0139] vg: an Abbe number of the optical filter GF.

[0140] Table 2 shows aspherical surface data of each lens in the imaging optical lens 10 of the first embodiment of the present application.

[0141]

Table 2

[0142] 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 +A14 r 14 +A16r 16 +A18r 18 +A20r 20 (1)

[0143] where k is a conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20 are aspherical coefficients, c is the curvature at the center of the optical surface, r is the perpendicular distance of a point on the aspherical curve from the optical axis, and z is the aspherical depth (the perpendicular distance between a point on the aspherical surface at a distance r from the optical axis and a tangent plane tangent to the vertex of the aspherical surface on the optical axis).

[0144] Fig. 2, Fig. 3 respectively show the axial aberration and the lateral chromatic aberration 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 10 of the first embodiment. Fig. 4 shows the field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging optical lens 10 of the first embodiment, where the field curvature S of Fig. 4 is the sagittal field curvature and T is the tangential field curvature.

[0145] In the present embodiment, the entrance pupil diameter ENPD of the imaging optical lens 10 is 5.067 mm, the 1.0 field image height IH is 8.000 mm, the MIC field image height is 8.290 mm, the 1.0 field FOV is 85.00°, the MIC field FOV is 87.4°, the imaging optical lens 10 meets the design requirements of small aberration, high light throughput, good machinability, low assembly sensitivity, wide angle, and ultra-thin, and has excellent optical characteristics.

[0146] It is understood that the 1.0 field height of view refers to half of the diagonal length of the effective pixel area of the sensor; the MIC field height of view refers to the field height of view which is extended outwardly than the 1.0 field height of view for preventing assembly deviation; the 1.0 diagonal direction FOV refers to the field of view angle corresponding to the effective pixel area of the sensor; and the MIC diagonal direction FOV refers to the field of view angle corresponding to the MIC field height of view.

[0147] (Second Embodiment)

[0148] The symbol meanings of the second embodiment are the same as those of the first embodiment.

[0149] Fig. 5 shows the imaging optical lens 20 of the second embodiment of the present application.

[0150] Tables 3 and 4 show the design data of the imaging optical lens 20 of the second embodiment of the present application.

[0151]

Table 3

[0152] Table 4 shows the aspherical surface data of each lens in the imaging optical lens 20 of the second embodiment of the present application.

[0153]

Table 4

[0154] For convenience, the aspherical surface of each lens surface uses the aspherical surface shown in the following formula (2). However, the present application is not limited to the aspherical polynomial form represented by the formula (2). z = (cr 2 ) / {1 + [1 - (k + 1)(c 2 r 2 )] 1 / 2} + A4r 4 +A6r 6 +A8r 8 +A10r 10 +A12r 12 +A14 r 14 +A16r 16 +A18r 18 +A20r 20 +A22r 22 +A24r 24 +A26r 26 +A28r 28 +A30r 30 (2)

[0155] where k is a conic constant, 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 the point on the aspherical curve at a distance r from the optical axis and a tangent plane at the vertex of the aspherical surface on the optical axis).

[0156] Fig. 6 and Fig. 7 respectively show axial aberration and lateral chromatic aberration 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. Fig. 8 shows field curvature and distortion of light with a wavelength of 555 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 T is the tangential field curvature.

[0157] In the present embodiment, the entrance pupil diameter ENPD of the imaging optical lens 20 is 5.077 mm, the 1.0 field image height IH is 8.000 mm, the MIC field image height is 8.290 mm, the 1.0 field FOV is 83.00°, the MIC field FOV is 84.97°, the imaging optical lens 20 meets the design requirements of small aberration, high light throughput, good machinability, low assembly sensitivity, wide angle, and ultra-thin, and has excellent optical characteristics.

[0158] (Third Embodiment)

[0159] The symbol meanings of the third embodiment are the same as those of the first embodiment.

[0160] Fig. 9 shows the imaging optical lens 30 of the third embodiment of the present application.

[0161] Table 5 and Table 6 show the design data of the imaging optical lens 30 of the third embodiment of the present application.

[0162]

Table 5

[0163] Table 6 shows the aspherical data of each lens in the imaging optical lens 30 of the third embodiment of the present application, wherein the aspherical surface of each lens surface uses the aspherical surface shown in the above formula (1). However, the present application is not limited to the aspherical polynomial form represented by the formula (1).

[0164]

Table 6

[0165] Fig. 10 and Fig. 11 respectively show the axial chromatic aberration and the lateral chromatic aberration of light with wavelengths of 655 nm, 610 nm, 555 nm, 510 nm, 470 nm and 435 nm after passing through the photographing optical lens 30 of the third embodiment. Fig. 12 shows the field curvature and the distortion of light with a wavelength of 555 nm after passing through the photographing 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.

[0166] In the present embodiment, the entrance pupil diameter ENPD of the photographing optical lens 30 is 5.062 mm, the 1.0 field image height IH is 8.000 mm, the MIC field image height is 8.290 mm, the 1.0 field FOV is 85.40°, and the MIC field FOV is 87.59°. The photographing optical lens 30 meets the design requirements of small aberration, high light throughput, good machinability, low assembly sensitivity, wide angle, and ultra-thin, and has excellent optical characteristics.

[0167] (Fourth Embodiment)

[0168] The symbol meanings of the fourth embodiment are the same as those of the first embodiment and the second embodiment.

[0169] Table 7 and Table 8 show the design data of the photographing optical lens 40 of the fourth embodiment of the present application.

[0170]

Table 7

[0171] Table 8 shows the aspherical surface data of each lens in the photographing optical lens 40 of the fourth embodiment of the present application, wherein the aspherical surface of each lens surface uses the aspherical surface shown in the above formula (2). However, the present application is not limited to the aspherical polynomial form represented by the formula (2).

[0172]

Table 8

[0173] Fig. 14 and Fig. 15 respectively show the axial chromatic aberration and the lateral chromatic aberration of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing through the photographing optical lens 40 of the fourth embodiment. Fig. 16 shows the field curvature and the distortion of light with a wavelength of 555 nm after passing through the photographing optical lens 40 of the fourth embodiment, and the field curvature S of Fig. 16 is the sagittal field curvature, and the field curvature T is the tangential field curvature.

[0174] In the embodiment, the entrance pupil diameter ENPD of the photographing optical lens 40 is 5.136 mm, the 1.0 field image height IH is 8.000 mm, the MIC field image height is 8.250 mm, the 1.0 field FOV is 85.58°, the MIC field FOV is 87.71°, the photographing optical lens 40 meets the design requirements of small aberration, high light throughput, good machinability, low assembly sensitivity, wide angle, and ultra-thin, and has excellent optical characteristics.

[0175] (Fifth Embodiment)

[0176] The symbol meanings of the fifth embodiment are the same as those of the first embodiment.

[0177] FIG. 17 shows the photographing optical lens 50 of the fifth embodiment of the present application.

[0178] Tables 9 and 10 show the design data of the photographing optical lens 50 of the fifth embodiment of the present application.

[0179] [Table 9]

[0180] Table 10 shows the aspheric data of each lens in the photographing optical lens 50 of the fifth embodiment of the present application, wherein the aspheric surface of each lens surface uses the aspheric surface shown in the above formula (1). However, the present application is not limited to the aspheric polynomial form represented by the formula (1).

[0181] [Table 10]

[0182] FIGS. 18 and 19 respectively show the axial aberration and the magnification chromatic aberration diagrams of light with wavelengths of 655 nm, 610 nm, 555 nm, 510 nm, 470 nm, and 435 nm after passing through the photographing optical lens 50 of the fifth embodiment. FIG. 20 shows the field curvature and distortion diagrams of light with a wavelength of 555 nm after passing through the photographing optical lens 50 of the fifth embodiment. The field curvature S of FIG. 20 is the sagittal field curvature, and T is the tangential field curvature.

[0183] In the embodiment, the entrance pupil diameter ENPD of the photographing optical lens 50 is 5.219 mm, the 1.0 field image height IH is 8.000 mm, the MIC field image height is 8.290 mm, the 1.0 field FOV is 84.95°, the MIC field FOV is 86.97°, the photographing optical lens 50 meets the design requirements of small aberration, high light throughput, good machinability, low assembly sensitivity, wide angle, and ultra-thin, and has excellent optical characteristics.

[0184] The later appearing Table 11 shows the values of the various numerical values in the embodiments one, two, three, four, five, and the values of the parameters specified in the conditional expressions.

[0185] [Table 11]

[0186] It will be understood by those of ordinary skill in the art that the above embodiments are specific embodiments for implementing the present application, and in actual applications, various changes can be made in form and details without departing from the spirit and scope of the present application.

Claims

1. A camera optical lens, characterized in that: The camera optical lens comprises an aperture stop and seven lenses, wherein the seven lenses are, 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; the object-side surface of the first lens is convex, and the image-side surface is concave; the object-side surface of the second lens is convex, and the image-side surface is concave; the image-side surface of the third lens is concave; the object-side surface of the fourth lens is convex, and the image-side surface is convex; the image-side surface of the fifth lens is concave; the object-side surface of the sixth lens is convex; and the image-side surface of the seventh lens is concave. wherein, the combined focal length of the first lens and the second lens is f12, the combined focal length of the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens is f34567, the distance from the aperture stop to the center of the object side surface of the first lens along the optical axis is TEP, the sag height at the maximum optical radius of the object side surface of the first lens is SAG11, the focal length of the camera optical lens is f, the central curvature radius of the object side surface of the first lens at the paraxial position is R1, the object side surface and the image side surface of the sixth lens each include at least one critical point, the critical point of the object side surface of the sixth lens closest to the optical axis is the first object side critical point, the vertical distance from the first object side critical point to the optical axis is HZD1, the sag height of the first object side critical point is SZD1, the critical point of the image side surface of the sixth lens closest to the optical axis is the first image side critical point, and the vertical distance from the first image side critical point to the optical axis is HZD2, The sag height of the first image side critical point is SZD2, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, the on-axis distance between the image side surface of the first lens and the object side surface of the second lens is d2, the on-axis distance between the image side surface of the second lens and the object side surface of the third lens is d4, the on-axis distance between the image side surface of the third lens and the object side surface of the fourth lens is d6, the sag height at the maximum optical radius of the object side surface of the fifth lens is SAG51, the on-axis distance between the image side surface of the fourth lens and the object side surface of the fifth lens is d8, and the following relationship is satisfied: -0.25≤f12 / f34567≤0.05; 0.13≤|TEP / SAG11|*(f / R1)≤2.80; 0.15≤SZD1 / HZD1≤0.30; 0.07≤SZD2 / HZD2≤0.25; -5.00≤(f5-f6) / f≤-1.40; 1.20≤d4 / (d2+d6)≤2.00; -1.50≤SAG51 / d8≤-0.

90.

2. The imaging optical lens according to claim 1, wherein: The following relationship is satisfied: -0.21≤f12 / f34567≤0.

04.

3. The imaging optical lens according to claim 1, wherein: The following relationship is satisfied: 0.15≤|TEP / SAG11|*(f / R1)≤2.

50.

4. The imaging optical lens according to claim 1, wherein: The following relationship is satisfied: 0.18≤SZD1 / HZD1≤0.

25.

5. The imaging optical lens according to claim 1, wherein: The following relationship is satisfied: 0.08≤SZD2 / HZD2≤0.

22.

6. The imaging optical lens according to claim 1, wherein: The following relationship is satisfied: -4.40≤(f5-f6) / f≤-1.

70.

7. The imaging optical lens according to claim 1, wherein: The following relationship is satisfied: 1.30≤d4 / (d2+d6)≤1.

85.

8. The imaging optical lens according to claim 1, wherein: The following relationship is satisfied: -1.25≤SAG51 / d8≤-0.

95.

9. The imaging optical lens according to claim 1, wherein: The sag at the maximum optical radius of the object side of the sixth lens is SAG61, the sag at the maximum optical radius of the image side of the sixth lens is SAG62, and the axial thickness of the sixth lens is d11, satisfying the following relationship: 0.20≤(SAG61-SAG62) / d11≤0.

50.

10. The imaging optical lens according to claim 9, wherein: The following relationship is satisfied: 0.23≤(SAG61-SAG62) / d11≤0.

45.

11. The imaging optical lens according to claim 1, wherein: The central curvature radius of the object side of the second lens at the paraxial position is R3, and the central curvature radius of the image side of the fifth lens at the paraxial position is R10, satisfying the following relationship: 0.28≤R3 / R10≤2.

65.

12. The imaging optical lens according to claim 11, wherein: The following relationship is satisfied: 0.33≤R3 / R10≤2.

28.

13. The imaging optical lens according to claim 1, wherein: The first lens is made of glass.

14. A camera optical lens, characterized in that: The camera optical lens comprises an aperture stop and seven lenses, wherein the seven lenses are, 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; the object-side surface of the first lens is convex, and the image-side surface is concave; the object-side surface of the second lens is convex, and the image-side surface is concave; the image-side surface of the third lens is concave; the object-side surface of the fourth lens is convex, and the image-side surface is convex; the image-side surface of the fifth lens is concave; the object-side surface of the sixth lens is convex; and the image-side surface of the seventh lens is concave. Wherein, the combined focal length of the first lens and the second lens is f12, the combined focal length of the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens is f34567, the distance from the aperture stop to the center of the object side surface of the first lens along the optical axis is TEP, the sag height at the maximum optical radius of the object side surface of the first lens is SAG11, the focal length of the camera optical lens is f, the central curvature radius of the object side surface of the first lens at the paraxial position is R1, the object side surface and the image side surface of the sixth lens each include at least one critical point, the critical point of the object side surface of the sixth lens closest to the optical axis is the first object side critical point, the vertical distance from the first object side critical point to the optical axis is HZD1, the sag height of the first object side critical point is SZD1, and the critical point of the image side surface of the sixth lens closest to the optical axis is the first image side adjacent The first image side critical point has a vertical distance from the optical axis to HZD2, and a sag height of the first image side critical point is SZD2. The object side surface and the image side surface of the sixth lens each include at least one inflection point. The object side surface of the sixth lens includes a first object side inflection point closest to the optical axis and a second object side inflection point outside the first object side inflection point. The vertical distance from the first object side inflection point to the optical axis is HFD1, and the sag height of the first object side inflection point is SFD1. The vertical distance from the second object side inflection point to the optical axis is HFD2, and the sag height of the second object side inflection point is SFD2. The image side surface of the sixth lens includes a first image side inflection point closest to the optical axis, a vertical distance from the first image side inflection point to the optical axis is HFD3, and the sag height of the first image side inflection point is SFD3. The following relationship is satisfied: -0.25≤f12 / f34567≤0.05; 0.13≤|TEP / SAG11|*(f / R1)≤2.80; 0.15≤SZD1 / HZD1≤0.30; 0.07≤SZD2 / HZD2≤0.25; 0.15≤SFD1 / HFD1≤0.28; -0.12≤SFD2 / HFD2≤0.002; 0.10≤SFD3 / HFD3≤0.

45.

15. The imaging optical lens according to claim 14, wherein: The following relationship is satisfied: -0.21≤f12 / f34567≤0.

04.

16. The imaging optical lens according to claim 14, wherein: The following relationship is satisfied: 0.15≤|TEP / SAG11|*(f / R1)≤2.

50.

17. The imaging optical lens according to claim 14, wherein: The following relationship is satisfied: 0.18≤SZD1 / HZD1≤0.

25.

18. The imaging optical lens according to claim 14, wherein: The following relationship is satisfied: 0.08≤SZD2 / HZD2≤0.

22.

19. The imaging optical lens according to claim 14, wherein: The following relationship is satisfied: 0.18≤SFD1 / HFD1≤0.

25.

20. The imaging optical lens according to claim 14, wherein: The following relationship is satisfied: -0.10≤SFD2 / HFD2≤0.

002.

21. The imaging optical lens according to claim 14, wherein: The following relationship is satisfied: 0.11≤SFD3 / HFD3≤0.

38.

22. The imaging optical lens according to claim 14, wherein: The focal length of the sixth lens is f6, and the axial thickness of the sixth lens is d11, which satisfies the following relationship: 6.58≤f6 / d11≤11.

78.

23. The imaging optical lens according to claim 22, wherein: The following relationship is satisfied: 7.69≤f6 / d11≤9.

85.

24. The imaging optical lens according to claim 14, wherein: The first lens is made of glass.

Images