CAMERA OPTICAL LENS

Abstract

The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: an aperture; a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power; a sixth lens having a negative refractive power; and a seventh lens having a negative refractive power. The camera optical lens satisfies following conditions: −2.50≤(R5+R6)/(R5−R6)≤−1.00; and −7.00≤f2/f≤−3.50, where f denotes a focal length of the camera optical lens; f2 denotes a focal length of the second lens; R5 denotes a curvature radius of an object side surface of the third lens; and R6 denotes a curvature radius of an image side surface of the third lens.

Description

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, and more particularly, to a camera optical lens suitable for handheld terminal devices such as smart phones or digital cameras and camera devices such as monitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand for miniature camera lens is increasing day by day, but in general the photosensitive devices of camera lens are nothing more than Charge Coupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor (CMOS sensor), and as the progress of the semiconductor manufacturing technology makes the pixel size of the photosensitive devices become smaller, plus the current development trend of electronic products towards better functions and thinner and smaller dimensions, miniature camera lenses with good imaging quality therefore have become a mainstream in the market.

In order to obtain better imaging quality, the lens that is traditionally equipped in mobile phone cameras adopts a three-piece or four-piece lens structure, or a five-piece lens structure. Also, with the development of technology and the increase of the diverse demands of users, and as the pixel area of photosensitive devices is becoming smaller and smaller and the requirement of the system on the imaging quality is improving constantly, a six-piece lens structure gradually appears in lens designs. Although the common six-piece lens has good optical performance, its settings on refractive power, lens spacing and lens shape still have some irrationality, which results in that the lens structure cannot achieve a high optical performance while satisfying design requirements for wide-angle and ultra-thin lenses having a big aperture.

BRIEF DESCRIPTION OF DRAWINGS

Many aspects of the exemplary embodiment can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.

FIG. 1 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 1 of the present disclosure;

FIG. 2 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 1;

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

FIG. 5 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 2 of the present disclosure;

FIG. 6 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 5;

FIG. 8 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 3 of the present disclosure;

FIG. 10 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 9;

FIG. 12 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 9;

FIG. 13 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 4 of the present disclosure;

FIG. 14 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 13;

FIG. 15 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 13;

FIG. 16 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 13;

FIG. 17 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 5 of the present disclosure;

FIG. 18 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 17;

FIG. 19 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 17; and

FIG. 20 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 17.

DESCRIPTION OF EMBODIMENTS

The present disclosure will hereinafter be described in detail with reference to several exemplary embodiments. To make the technical problems to be solved, technical solutions and beneficial effects of the present disclosure more apparent, the present disclosure is described in further detail together with the figure and the embodiments. It should be understood the specific embodiments described hereby is only to explain the disclosure, not intended to limit the disclosure.

Embodiment 1

Referring to FIG. 1, the present disclosure provides a camera optical lens 10. FIG. 1 shows the camera optical lens 10 according to Embodiment 1 of the present disclosure. The camera optical lens 10 includes 6 lenses. Specifically, the camera optical lens 10 includes, from an object side to an image side, an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6. An optical element such as a glass plate GF can be arranged between the sixth lens L6 and an image plane Si. The glass plate GF can be a glass cover plate or an optical filter. In other embodiments, the glass plate GF can be arranged at other position.

In present embodiment, the first lens L1 has a positive refractive power, and has an object side surface being a convex surface and an image object surface being a concave surface; the second lens L2 has a negative refractive power, and has an object side surface being a convex surface and an image object surface being a concave surface; the third lens L3 has a positive refractive power, and has an object side surface being a convex surface and an image object surface being a concave surface; the fourth lens L4 has a negative refractive power, and has an object side surface being a convex surface and an image object surface being a concave surface; the fifth lens L5 has a positive refractive power, and has an object side surface being a concave surface and an image object surface being a convex surface; and a sixth lens L6 has a negative refractive power, and has an object side surface being a concave surface and an image object surface being a concave surface.

In addition, a surface of a lens can be set as an aspherical surface. The aspherical surface can be easily formed into a shape other than the spherical surface, so that more control variables can be obtained to reduce the aberration, thereby reducing the number of lenses and thus effectively reducing a total length of the camera optical lens according to the present disclosure. In an embodiment of the present disclosure, both an object side surface and an image side surface of each lens are aspherical surfaces.

Here, a focal length of the camera optical lens 10 is defined as f, a focal length of the second lens L2 is defined as f2, a curvature radius of the object side surface of the third lens is defined as R5, and a curvature radius of the image side surface of the third lens is defined as R6, where f, f2, R5 and F6 should satisfy following conditions:

−2.50≤(R5+R6)/(R5−R6)≤−1.00  (1); and

−7.00≤f2/f≤−3.50  (2).

The condition (1) specifies a shape of the third lens L3. Within this range, a development towards wide-angle lenses having a big aperture can alleviate a deflection degree of light passing through the lens, thereby effectively reducing aberrations.

The condition (2) specifies a ratio of the focal length of the second lens L2 and the focal length of the camera optical lens 10. This leads to the appropriate distribution of the refractive power for the second lens L2, thereby facilitating correction of aberrations of the camera optical lens and thus improving the imaging quality.

In this embodiment, with the above configurations of the lenses including respective lenses (L1, L2, L3, L4, L5 and L6) having different refractive powers, in which there is a specific relationship between focal lengths of the second lens L2 and the camera optical lens 10 and the third lens L3 has a specific shape, the present embodiment can achieve a high optical performance while satisfying design requirements for wide-angle and ultra-thin lenses having a big aperture.

In an example, a focal length of the fifth lens L5 is defined as f5. The camera optical lens satisfies a condition of:

0.50≤f5/f≤0.60  (3).

The condition (3) specifies a ratio of the focal length of the fifth lens L5 and the focal length of the camera optical lens 10. This can facilitate improving the performance of the camera optical lens.

In an example, an on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6 is defined as d10, and an on-axis thickness of the sixth lens L6 is defined as d11, where d10 and d11 satisfy a condition of:

0.40≤d10/d11≤0.60  (4).

The condition (4) specifies a ratio of the on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6 and the on-axis thickness of the sixth lens L6. This can facilitate processing and assembly of the lenses.

In an example, a curvature radius of the object side surface of the sixth lens L6 is defined as R11, and a curvature radius of the image side surface of the sixth lens L6 is defined as R12, where R11 and R12 satisfy a condition of:

0.80≤(R11+R12)/(R11−R12)≤1.00  (5).

The condition (5) specifies a shape of the sixth lens L6. This can effectively correct aberrations caused by first five lenses (the first lens L1, the second lens L2, the third lens L3, the fourth lens L4 and the fifth lens L5) in the camera optical lens.

It should be noted that the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6 that constitute the camera optical lens 10 of the present embodiment have the structure and parameter relationships as described above, and therefore, the camera optical lens 10 can reasonably distribute the refractive power, the surface shape, the material, the on-axis thickness and the like of each lens, and thus correct various aberrations. The camera optical lens 10 has Fno no 80. A total optical length from the object side surface of the first lens to an image plane of the camera optical lens along an optic axis (TTL) and an image height (IH) of the camera optical lens 10 satisfy a condition of TTL/IH1.41. The field of view (FOV) of the camera optical lens 10 satisfies FOV op84.00 degrees. This can achieve a high optical performance while satisfying design requirements for wide-angle and ultra-thin lenses having a big aperture.

FIG. 1 is a schematic diagram of a structure of the camera optical lens 10 in accordance with Embodiment 1 of the present disclosure. The design information of the camera optical lens 10 in Embodiment 1 of the present disclosure is shown in the following. Table 1 lists curvature radiuses of object side surfaces and images side surfaces of the first lens L1 to the sixth lens L6 constituting the camera optical lens 10, central thicknesses of the lenses, distances between the lenses, the refractive index nd and the abbe number vd according to Embodiment 1 of the present disclosure. Table 2 shows conic coefficients k and aspheric surface coefficients. It should be noted that each of the distance, radii and the central thickness is in a unit of millimeter (mm).

	TABLE 1
	R	d	nd	νd
S1	∞	d0=	−0.285
R1	1.538	d1=	0.501	nd1	1.5463	ν1	55.99
R2	3.173	d2=	0.086
R3	2.408	d3=	0.230	nd2	1.6672	ν2	20.41
R4	1.993	d4=	0.203
R5	4.927	d5=	0.319	nd3	1.5463	ν3	55.99
R6	12.274	d6=	0.161
R7	4.397	d7=	0.314	nd4	1.6403	ν4	23.97
R8	2.957	d8=	0.133
R9	−7.930	d9=	0.790	nd5	1.5463	ν5	55.99
R10	−0.880	d10=	0.203
R11	−18.432	d11=	0.420	nd6	1.5370	ν6	56.12
R12	0.983	d12=	0.555
R13	∞	d13=	0.200	ndg	1.5168	νg	64.17
R14	∞	d14=	0.306

In the table, meanings of various symbols will be described as follows.

R: curvature radius of an optical surface, a central curvature radius for a lens;

S1: aperture;

R1: curvature radius of the object side surface of the first lens L1;

R2: curvature radius of the image side surface of the first lens L1;

R3: curvature radius of the object side surface of the second lens L2;

R4: curvature radius of the image side surface of the second lens L2;

R5: curvature radius of the object side surface of the third lens L3;

R6: curvature radius of the image side surface of the third lens L3;

R7: curvature radius of the object side surface of the fourth lens L4;

R8: curvature radius of the image side surface of the fourth lens L4;

R9: curvature radius of the object side surface of the fifth lens L5;

R10: curvature radius of the image side surface of the fifth lens L5;

R11: curvature radius of the object side surface of the sixth lens L6;

R12: curvature radius of the image side surface of the sixth lens L6;

R13: curvature radius of an object side surface of the glass plate GF;

R14: curvature radius of an image side surface of the glass plate GF;

d: on-axis thickness of a lens or an on-axis distance between lenses;

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

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

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

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

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

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

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

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

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

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

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

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

d12: on-axis distance from the image side surface of the sixth lens L6 to the object side surface of the optical filter GF;

d13: on-axis thickness of the glass plate GF;

d14: on-axis distance from the image side surface of the glass plate GF to the image plane Si;

nd: refractive index of d line;

nd1: refractive index of d line of the first lens L1;

nd2: refractive index of d line of the second lens L2;

nd3: refractive index of d line of the third lens L3;

nd4: refractive index of d line of the fourth lens L4;

nd5: refractive index of d line of the fifth lens L5;

nd6: refractive index of d line of the sixth lens L6;

ndg: refractive index of d line of the glass plate GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

v6: abbe number of the sixth lens L6;

vg: abbe number of the glass plate GF.

	TABLE 2
	Conic coefficient	Aspherical surface coefficients
	k	A4	A6	A8	A10	A12	A14	A16
R1	4.6273E−01	−2.4393E−02	5.9971E−02	−3.2179E−01	9.4729E−01	−1.5850E+00	1.3492E+00	−4.6840E−01
R2	−3.6037E+01	−9.9086E−02	5.1092E−02	6.2306E−01	−2.4127E+00	4.0973E+00	−3.4117E+00	1.0787E+00
R3	−2.7949E+00	−3.3419E−01	1.7733E−01	1.3261E+00	−4.6080E+00	7.1907E+00	−5.5622E+00	1.6593E+00
R4	−2.6814E+00	−1.6321E−01	9.5186E−02	7.0039E−01	−2.0939E+00	2.8967E+00	−2.0381E+00	5.7963E−01
R5	−1.0983E+01	−2.6974E−02	−2.5770E−01	7.3633E−01	−1.2906E+00	9.2511E−01	−5.9094E−01	4.4649E−01
R6	9.6804E+01	−6.7882E−02	−7.2186E−01	3.3478E+00	−8.0542E+00	1.0453E+01	−7.2723E+00	2.1664E+00
R7	7.2921E+00	−3.3196E−01	−8.0991E−02	6.1300E−01	−8.0606E−01	3.7288E−01	8.8099E−02	−9.4498E−02
R8	−6.5850E+01	5.6395E−02	−5.8763E−01	1.0825E+00	−1.2293E+00	8.8511E−01	−3.4616E−01	5.4502E−02
R9	2.5231E+01	5.3958E−02	−4.6238E−02	−1.6620E−01	2.7194E−01	−1.4479E−01	3.0537E−02	−1.8113E−03
R10	−4.4056E+00	−2.3988E−01	4.0667E−01	−5.2322E−01	4.1614E−01	−1.7385E−01	3.5845E−02	−2.9106E−03
R11	7.1003E+01	−1.5450E−01	6.9907E−02	−5.8379E−02	3.9610E−02	−1.2684E−02	1.8957E−03	−1.0847E−04
R12	−6.6960E+00	−1.0549E−01	5.3831E−02	−2.2366E−02	5.8723E−03	−9.0876E−04	7.3519E−05	−2.2825E−06

In Table 2, k is a conic coefficient, and A4, A6, A8, A10, A12, A14 and A16 are aspheric surface coefficients.

In the present embodiment, an aspheric surface of each lens surface uses the aspheric surfaces shown in the above condition (6). However, the present disclosure is not limited to the aspherical polynomials form shown in the condition (6).

Y=(x²/R)/{1+[1−(1+k)(x²/R²)]^1/2}+A4x⁴+A6x⁶+A8x⁸+A10x¹⁰+A12x¹²+A14x¹⁴+A16x¹⁶  (6)

Table 3 and Table 4 show design data of inflexion points and arrest points of respective lens in the camera optical lens 10 according to Embodiment 1 of the present disclosure. P1R1 and P1R2 represent the object side surface and the image side surface of the first lens L1, respectively, P2R1 and P2R2 represent the object side surface and the image side surface of the second lens L2, respectively, P3R1 and P3R2 represent the object side surface and the image side surface of the third lens L3, respectively, P4R1 and P4R2 represent the object side surface and the image side surface of the fourth lens L4, respectively, P5R1 and P5R2 represent the object side surface and the image side surface of the fifth lens L5, respectively, and P6R1 and P6R2 represent the object side surface and the image side surface of the sixth lens L6, respectively. The data in the column named “inflexion point position” refers to vertical distances from inflexion points arranged on each lens surface to the optic axis of the camera optical lens 10. The data in the column named “arrest point position” refers to vertical distances from arrest points arranged on each lens surface to the optic axis of the camera optical lens 10.

	TABLE 3
	Number of	Inflexion	Inflexion	Inflexion	Inflexion
	inflexion	point	point	point	point
	points	position 1	position 2	position 3	position 4
P1R1
P1R2	1	0.535
P2R1	1	0.405
P2R2
P3R1	2	0.435	0.865
P3R2	2	0.245	0.925
P4R1	1	0.245
P4R2	4	0.375	1.015	1.155	1.325
P5R1	3	0.965	1.295	1.455
P5R2	2	0.955	1.555
P6R1	2	1.305	2.065
P6R2	2	0.525	2.325

	TABLE 4
	Number of	Arrest point	Arrest point
	arrest points	position 1	position 2
	P1R1
	P1R2	1	0.855
	P2R1
	P2R2
	P3R1	1	0.665
	P3R2	1	0.405
	P4R1	1	0.425
	P4R2	1	0.665
	P5R1
	P5R2	2	1.435	1.655
	P6R1	1	1.955
	P6R2	1	1.305

In addition, Table 21 below further lists various values of Embodiment 1 and values corresponding to parameters which are specified in the above conditions.

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 435 nm, 470 nm, 510 nm, 555 nm, 610 nm and 650 nm after passing the camera optical lens 10 according to Embodiment 1. FIG. 4 illustrates a field curvature and a distortion of light with a wavelength of 555 nm after passing the camera optical lens 10 according to Embodiment 1, in which a field curvature S is a field curvature in a sagittal direction and T is a field curvature in a tangential direction.

In this embodiment, the entrance pupil diameter of the camera optical lens is 1.864 mm. The image height of 1.0H is 3.147 mm. The FOV (field of view) is 85.09°. Thus, the camera optical lens 10 can achieve a high imaging performance while satisfying design requirements for wide-angle and ultra-thin lenses having a big aperture.

Embodiment 2

FIG. 5 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 2 of the present disclosure. Embodiment 2 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1, and only differences therebetween will be described in the following.

Table 5 and Table 6 show design data of a camera optical lens 20 in Embodiment 2 of the present disclosure.

	TABLE 5
	R	d	nd	νd
S1	∞	d0=	−0.303
R1	1.523	d1=	0.541	nd1	1.5463	ν1	55.99
R2	3.856	d2=	0.076
R3	3.519	d3=	0.222	nd2	1.6672	ν2	20.41
R4	2.393	d4=	0.202
R5	5.040	d5=	0.289	nd3	1.5463	ν3	55.99
R6	11.804	d6=	0.160
R7	3.496	d7=	0.290	nd4	1.6403	ν4	23.97
R8	2.601	d8=	0.160
R9	−7.850	d9=	0.814	nd5	1.5463	ν5	55.99
R11	−0.869	d10=	0.200
R11	−14.863	d11=	0.388	nd6	1.5370	ν6	56.12
R12	0.983	d12=	0.555
R13	∞	d13=	0.200	ndg	1.5168	νg	64.17
R14	∞	d14=	0.333

	TABLE 6
	Conic coefficient	Aspherical surface coefficients
	k	A4	A6	A8	A10	A12	A14	A16
R1	4.1080E−01	−2.6862E−02	9.3155E−02	−4.2699E−01	1.1475E+00	−1.8068E+00	1.4948E+00	−5.1195E−01
R2	−3.1607E+01	−1.0876E−01	6.8752E−02	6.8060E−01	−2.5814E+00	4.1448E+00	−3.2250E+00	9.2007E−01
R3	3.5542E+00	−2.8962E−01	1.4506E−01	1.3057E+00	−4.5852E+00	6.9927E+00	−5.1526E+00	1.3965E+00
R4	−1.6419E+00	−1.4894E−01	1.2780E−01	6.3045E−01	−2.2398E+00	3.0376E+00	−1.7736E+00	2.0230E−01
R5	−1.7030E+01	−2.4239E−02	−2.4504E−01	6.4560E−01	−1.3455E+00	1.2291E+00	−9.1520E−01	4.1916E−01
R6	4.6349E+01	−8.0648E−02	−7.3538E−01	3.2638E+00	−7.7699E+00	1.0176E+01	−7.3384E+00	2.3397E+00
R7	−4.1098E−01	−3.7384E−01	−6.7429E−02	5.9289E−01	−8.0230E−01	3.9548E−01	1.3350E−01	−1.3432E−01
R8	−4.8101E+01	3.1234E−02	−5.9040E−01	1.0832E+00	−1.2232E+00	8.8626E−01	−3.4658E−01	5.3965E−02
R9	2.3854E+01	4.0301E−02	−4.7007E−02	−1.6547E−01	2.6784E−01	−1.3972E−01	3.0199E−02	−2.2576E−03
R10	−4.4725E+00	−2.4614E−01	4.0631E−01	−5.2476E−01	4.1634E−01	−1.7340E−01	3.5773E−02	−2.9234E−03
R11	4.7870E+01	−1.5824E−01	7.3476E−02	−5.8685E−02	3.9361E−02	−1.2641E−02	1.8988E−03	−1.0899E−04
R12	−7.0081E+00	−1.0717E−01	5.3720E−02	−2.2336E−02	5.8815E−03	−9.0676E−04	7.2388E−05	−2.1513E−06

Table 7 and Table 8 show design data of inflexion points and arrest points of respective lens in the camera optical lens 20 according to Embodiment 2 of the present disclosure.

	TABLE 7
	Number of	Inflexion point	Inflexion point	Inflexion point
	inflexion points	position 1	position 2	position 3
P1R1	1	0.935
P1R2	1	0.585
P2R1	1	0.365
P2R2	1	0.745
P3R1	1	0.425
P3R2	2	0.235	0.895
P4R1	1	0.255
P4R2	3	0.365	0.985	1.195
P5R1	2	0.975	1.335
P5R2	2	0.975	1.545
P6R1	2	1.305	2.045
P6R2	2	0.515	2.255

	TABLE 8
	Number of	Arrest point	Arrest point
	arrest points	position 1	position 2
	P1R1
	P1R2	1	0.835
	P2R1	1	0.825
	P2R2
	P3R1	1	0.635
	P3R2	1	0.375
	P4R1	1	0.445
	P4R2	1	0.645
	P5R1	2	1.275	1.375
	P5R2	2	1.495	1.585
	P6R1	2	1.955	2.075
	P6R2	1	1.265

In addition, Table 21 below further lists various values of Embodiment 2 and values corresponding to parameters which are specified in the above conditions.

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and 650 nm after passing the camera optical lens 20 according to Embodiment 2. FIG. 8 illustrates a field curvature and a distortion of light with a wavelength of 555 nm after passing the camera optical lens 20 according to Embodiment 2, in which a field curvature S is a field curvature in a sagittal direction and T is a field curvature in a tangential direction.

In this embodiment, the entrance pupil diameter of the camera optical lens is 1.876 mm. The image height of 1.0H is 3.147 mm. The FOV (field of view) is 84.69°. Thus, the camera optical lens 20 can achieve a high imaging performance while satisfying design requirements for wide-angle and ultra-thin lenses having a big aperture.

Embodiment 3

FIG. 9 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 3 of the present disclosure. Embodiment 3 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1, and only differences therebetween will be described in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 in Embodiment 3 of the present disclosure.

	TABLE 9
	R	d	nd	νd
S1	∞	d0=	−0.280
R1	1.604	d1=	0.525	nd1	1.5463	ν1	55.99
R2	4.037	d2=	0.086
R3	2.824	d3=	0.222	nd2	1.6672	ν2	20.41
R4	2.043	d4=	0.197
R5	6.485	d5=	0.322	nd3	1.5463	ν3	55.99
R6	136.328	d6=	0.149
R7	2.718	d7=	0.225	nd4	1.6403	ν4	23.97
R8	2.604	d8=	0.199
R9	−5.240	d9=	0.792	nd5	1.5463	ν5	55.99
R10	−0.943	d10=	0.234
R11	−23.160	d11=	0.397	nd6	1.5370	ν6	56.12
R12	0.983	d12=	0.555
R13	∞	d13=	0.200	ndg	1.5168	νg	64.17
R14	∞	d14=	0.275

	TABLE 10
	Conic coefficient	Aspherical surface coefficients
	k	A4	A6	A8	A10	A12	A14	A16
R1	5.0799E−01	−1.7245E−02	5.1881E−02	−3.3055E−01	9.9625E−01	−1.6317E+00	1.3727E+00	−4.7091E−01
R2	−3.7533E+01	−1.0516E−01	6.1872E−02	7.0481E−01	−2.5726E+00	4.0279E+00	−3.0255E+00	8.0572E−01
R3	4.1118E−01	−3.1603E−01	1.1516E−01	1.3403E+00	−4.5474E+00	6.7942E+00	−4.8974E+00	1.2458E+00
R4	−3.0344E+00	−1.6174E−01	1.0731E−01	6.4231E−01	−2.1510E+00	2.8657E+00	−1.9189E+00	5.3454E−01
R5	−9.4247E+00	−1.9977E−02	−2.1156E−01	6.1098E−01	−1.2361E+00	1.3002E+00	−1.2849E+00	8.6539E−01
R6	−8.9984E+01	−7.8150E−02	−7.2275E−01	3.2075E+00	−7.6423E+00	1.0109E+01	−7.3490E+00	2.3778E+00
R7	1.0361E+00	−3.5468E−01	−1.3017E−01	6.1498E−01	−8.3757E−01	4.3205E−01	1.0337E−01	−1.1554E−01
R8	−3.8468E+01	2.7971E−02	−5.9828E−01	1.0939E+00	−1.2373E+00	8.9839E−01	−3.5086E−01	5.4279E−02
R9	1.1171E+01	5.0544E−02	−3.9454E−02	−1.6666E−01	2.6243E−01	−1.3678E−01	3.0542E−02	−2.6150E−03
R10	−5.2891E+00	−2.3861E−01	4.0836E−01	−5.2776E−01	4.1626E−01	−1.7317E−01	3.5713E−02	−2.9090E−03
R11	9.0692E+01	−1.7392E−01	7.9310E−02	−5.9433E−02	3.9236E−02	−1.2618E−02	1.9047E−03	−1.1039E−04
R12	−6.7109E+00	−1.0764E−01	5.4492E−02	−2.2660E−02	5.9241E−03	−9.0669E−04	7.1931E−05	−2.1513E−06

Table 11 and Table 12 show design data of inflexion points and arrest points of respective lens in the camera optical lens 30 according to Embodiment 3 of the present disclosure.

	TABLE 11
	Number of	Inflexion point	Inflexion point	Inflexion point
	inflexion points	position 1	position 2	position 3
P1R1
P1R2	1	0.625
P2R1	1	0.375
P2R2	1	0.695
P3R1	2	0.435	0.835
P3R2	2	0.085	0.865
P4R1	1	0.305
P4R2	3	0.375	0.995	1.185
P5R1	2	0.985	1.295
P5R2	2	0.975	1.535
P6R1	2	1.305	2.075
P6R2	2	0.515	2.315

	TABLE 12
	Number of	Arrest point	Arrest point
	arrest points	position 1	position 2
	P1R1
	P1R2	1	0.835
	P2R1	1	0.765
	P2R2
	P3R1	1	0.655
	P3R2	2	0.135	0.955
	P4R1	1	0.525
	P4R2	1	0.655
	P5R1
	P5R2
	P6R1	1	1.985
	P6R2	1	1.285

In addition, Table 21 below further lists various values of Embodiment 3 and values corresponding to parameters which are specified in the above conditions.

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and 650 nm after passing the camera optical lens 30 according to Embodiment 3. FIG. 12 illustrates field curvature and distortion of light with a wavelength of 555 nm after passing the camera optical lens 30 according to Embodiment 3, in which a field curvature S is a field curvature in a sagittal direction and T is a field curvature in a tangential direction.

In this embodiment, the entrance pupil diameter of the camera optical lens 30 is 1.861 mm. The image height of 1.0H is 3.147 mm. The FOV (field of view) is 85.09°. Thus, the camera optical lens 30 can achieve a high imaging performance while satisfying design requirements for wide-angle and ultra-thin lenses having a big aperture.

Embodiment 4

FIG. 13 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 4 of the present disclosure. Embodiment 4 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1, and only differences therebetween will be described in the following.

Table 13 and Table 14 show design data of a camera optical lens 40 in Embodiment 2 of the present disclosure.

	TABLE 13
	R	d	nd	νd
S1	∞	d0=	−0.295
R1	1.554	d1=	0.532	nd1	1.5463	ν1	55.99
R2	3.696	d2=	0.078
R3	2.868	d3=	0.222	nd2	1.6672	ν2	20.41
R4	2.165	d4=	0.191
R5	6.785	d5=	0.289	nd3	1.5463	ν3	55.99
R6	19.370	d6=	0.149
R7	3.163	d7=	0.282	nd4	1.6403	ν4	23.97
R8	2.518	d8=	0.178
R9	−6.903	d9=	0.774	nd5	1.5463	ν5	55.99
R10	−0.901	d10=	0.179
R11	−194.995	d11=	0.446	nd6	1.5370	ν6	56.12
R12	0.983	d12=	0.555
R13	∞	d13=	0.200	ndg	1.5168	νg	64.17
R14	∞	d14=	0.356

	TABLE 14
	Conic coefficient	Aspherical surface coefficients
	k	A4	A6	A8	A10	A12	A14	A16
R1	4.5008E−01	−2.6237E−02	7.7937E−02	−3.8024E−01	1.0433E+00	−1.6374E+00	1.3501E+00	−4.6053E−01
R2	−3.2327E+01	−1.1442E−01	6.3855E−02	7.4038E−01	−2.6222E+00	4.0873E+00	−3.1151E+00	8.4518E−01
R3	7.6083E−01	−3.1053E−01	1.4320E−01	1.3276E+00	−4.5258E+00	6.7871E+00	−4.9792E+00	1.2950E+00
R4	−2.2386E+00	−1.5046E−01	1.2266E−01	6.2022E−01	−2.1515E+00	2.9150E+00	−1.8530E+00	3.5144E−01
R5	2.5171E+00	−1.5785E−02	−2.4958E−01	6.5173E−01	−1.3726E+00	1.6063E+00	−1.4113E+00	7.3272E−01
R6	−3.5631E+01	−7.4286E−02	−7.2040E−01	3.1482E+00	−7.5759E+00	1.0131E+01	−7.3628E+00	2.3648E+00
R7	−9.6420E−01	−3.7624E−01	−7.9246E−02	5.8783E−01	−8.3902E−01	4.4469E−01	1.4002E−01	−1.5163E−01
R8	−4.4235E+01	2.4159E−02	−5.8270E−01	1.0797E+00	−1.2280E+00	8.9057E−01	−3.4685E−01	5.3727E−02
R9	2.0160E+01	4.3373E−02	−3.8327E−02	−1.6874E−01	2.6360E−01	−1.3827E−01	3.1261E−02	−2.6136E−03
R10	−4.6826E+00	−2.4553E−01	4.0838E−01	−5.2615E−01	4.1633E−01	−1.7335E−01	3.5766E−02	−2.9252E−03
R11	6.9677E+03	−1.6965E−01	7.6666E−02	−5.9129E−02	3.9172E−02	−1.2605E−02	1.9037E−03	−1.1028E−04
R12	−6.4600E+00	−1.0675E−01	5.3945E−02	−2.2505E−02	5.9066E−03	−9.0497E−04	7.2128E−05	−2.1873E−06

Table 15 and Table 16 show design data of inflexion points and arrest points of respective lens in the camera optical lens 40 according to Embodiment 4 of the present disclosure.

	TABLE 15
	Number of	Inflexion point	Inflexion point	Inflexion point
	inflexion points	position 1	position 2	position 3
P1R1
P1R2	1	0.645
P2R1	1	0.405
P2R2	1	0.725
P3R1	1	0.415
P3R2	2	0.195	0.865
P4R1	1	0.265
P4R2	3	0.365	0.995	1.215
P5R1	2	0.985	1.335
P5R2	2	0.975	1.515
P6R1	2	1.305	2.105
P6R2	2	0.525	2.285

	TABLE 16
	Number of	Arrest point	Arrest point
	arrest points	position 1	position 2
	P1R1
	P1R2	1	0.835
	P2R1	1	0.795
	P2R2
	P3R1	1	0.635
	P3R2	2	0.305	0.945
	P4R1	1	0.465
	P4R2	1	0.645
	P5R1	2	1.285	1.375
	P5R2
	P6R1	1	1.975
	P6R2	1	1.305

In addition, Table 21 below further lists various values of Embodiment 4 and values corresponding to parameters which are specified in the above conditions.

FIG. 14 and FIG. 15 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and 650 nm after passing the camera optical lens 40 according to Embodiment 4. FIG. 16 illustrates a field curvature and a distortion of light with a wavelength of 555 nm after passing the camera optical lens 40 according to Embodiment 4, in which a field curvature S is a field curvature in a sagittal direction and T is a field curvature in a tangential direction.

In this embodiment, the entrance pupil diameter of the camera optical lens 40 is 1.871 mm. The image height of 1.0H is 3.147 mm. The FOV (field of view) is 84.97°. Thus, the camera optical lens 40 can achieve a high imaging performance while satisfying design requirements for wide-angle and ultra-thin lenses having a big aperture.

Embodiment 5

FIG. 17 is a schematic diagram of a structure of a camera optical lens 50 in accordance with Embodiment 5 of the present disclosure. Embodiment 5 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1, and only differences therebetween will be described in the following.

Table 17 and Table 18 show design data of a camera optical lens 50 in Embodiment 5 of the present disclosure.

	TABLE 17
	R	d	nd	νd
S1	∞	d0=	−0.290
R1	1.545	d1=	0.537	nd1	1.5463	ν1	55.99
R2	3.302	d2=	0.070
R3	2.880	d3=	0.222	nd2	1.6672	ν2	20.41
R4	2.360	d4=	0.188
R5	6.311	d5=	0.303	nd3	1.5463	ν3	55.99
R6	19.204	d6=	0.158
R7	3.305	d7=	0.287	nd4	1.6403	ν4	23.97
R8	2.659	d8=	0.163
R9	−7.151	d9=	0.821	nd5	1.5463	ν5	55.99
R10	−0.866	d10=	0.168
R11	−9.115	d11=	0.420	nd6	1.5370	ν6	56.12
R12	0.983	d12=	0.555
R13	∞	d13=	0.200	ndg	1.5168	νg	64.17
R14	∞	d14=	0.340

	TABLE 18
	Conic coefficient	Aspherical surface coefficients
	k	A4	A6	A8	A10	A12	A14	A16
R1	4.0936E−01	−2.8262E−02	6.7159E−02	−3.4631E−01	9.8430E−01	−1.6333E+00	1.3772E+00	−4.7440E−01
R2	−3.4724E+01	−1.2634E−01	4.6275E−02	6.8349E−01	−2.5632E+00	4.1491E+00	−3.2513E+00	9.5586E−01
R3	−9.5309E−01	−3.2513E−01	1.4887E−01	1.3233E+00	−4.5584E+00	6.9938E+00	−5.1634E+00	1.4066E+00
R4	−2.3312E+00	−1.5072E−01	1.1339E−01	6.4405E−01	−2.1953E+00	3.0010E+00	−1.8736E+00	4.0567E−01
R5	−4.2288E+00	−2.1232E−02	−2.5099E−01	6.4822E−01	−1.2497E+00	1.0743E+00	−8.7777E−01	6.9492E−01
R6	9.0004E+01	−8.1921E−02	−7.3063E−01	3.2637E+00	−7.7674E+00	1.0201E+01	−7.3115E+00	2.3352E+00
R7	3.1551E−01	−3.6381E−01	−9.4468E−02	5.9208E−01	−8.0817E−01	4.1455E−01	1.2343E−01	−1.3501E−01
R8	−4.3045E+01	3.5704E−02	−5.9054E−01	1.0846E+00	−1.2265E+00	8.8634E−01	−3.4631E−01	5.3914E−02
R9	1.9580E+01	4.5493E−02	−4.2599E−02	−1.6552E−01	2.6702E−01	−1.3999E−01	3.0106E−02	−2.2220E−03
R10	−4.5588E+00	−2.4452E−01	4.0590E−01	−5.2475E−01	4.1678E−01	−1.7369E−01	3.5821E−02	−2.9282E−03
R11	2.2939E+01	−1.5990E−01	7.3793E−02	−5.8567E−02	3.9390E−02	−1.2632E−02	1.9003E−03	−1.0858E−04
R12	−7.3816E+00	−1.0675E−01	5.3777E−02	−2.2376E−02	5.8797E−03	−9.0635E−04	7.2237E−05	−2.2400E−06

Table 19 and Table 20 show design data of inflexion points and arrest points of respective lens in the camera optical lens 50 according to Embodiment 5 of the present disclosure.

	TABLE 19
	Number of	Inflexion point	Inflexion point	Inflexion point
	inflexion points	position 1	position 2	position 3
P1R1	1	0.915
P1R2	1	0.425
P2R1	1	0.355
P2R2
P3R1	2	0.415	0.835
P3R2	2	0.185	0.865
P4R1	1	0.265
P4R2	3	0.375	1.005	1.165
P5R1	2	0.965	1.295
P5R2	2	0.975	1.515
P6R1	2	1.325	1.755
P6R2	1	0.505

	TABLE 20
	Number of	Arrest point	Arrest point
	arrest points	position 1	position 2
	P1R1
	P1R2	1	0.785
	P2R1	1	0.845
	P2R2
	P3R1	1	0.625
	P3R2	2	0.305	0.945
	P4R1	1	0.465
	P4R2	1	0.665
	P5R1
	P5R2
	P6R1
	P6R2	1	1.255

In addition, Table 21 below further lists various values of Embodiment 5 and values corresponding to parameters which are specified in the above conditions.

FIG. 18 and FIG. 19 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and 650 nm after passing the camera optical lens 50 according to Embodiment 5. FIG. 20 illustrates field curvature and distortion of light with a wavelength of 555 nm after passing the camera optical lens 50 according to Embodiment 5, in which a field curvature S is a field curvature in a sagittal direction and T is a field curvature in a tangential direction.

In this embodiment, the entrance pupil diameter of the camera optical lens 50 is 1.889 mm. The image height of 1.0H is 3.147 mm. The FOV (field of view) is 84.36°. Thus, the camera optical lens 50 can achieve a high imaging performance while satisfying design requirements for wide-angle and ultra-thin lenses having a big aperture.

Table 21 below lists various values of Embodiments 1, 2, 3, 4 and 5 and values corresponding to parameters which are specified in the above conditions (1), (2), (3), (4) and (5) and values of relevant parameters.

	TABLE 21
	Embodiment 1	Embodiment 2	Embodiment 3	Embodiment 4	Embodiment 5	Notes
(R5 + R6)/	−2.34	−2.49	−1.10	−2.08	−1.98	Condition (1)
(R5 − R6)
f2/f	−6.64	−3.60	−3.73	−4.50	−6.95	Condition (2)
f5/f	0.52	0.51	0.59	0.54	0.51	Condition (3)
d10/d11	0.48	0.52	0.59	0.40	0.40	Condition (4)
(R11 + R12)/	0.90	0.88	0.92	0.99	0.81	Condition (5)
(R11 − R12)
f	3.354	3.377	3.349	3.367	3.401
f1	4.930	4.261	4.528	4.512	4.796
f2	−22.258	−12.161	−12.504	−15.151	−23.635
f3	14.838	15.861	12.453	18.964	17.065
f4	−15.408	−18.169	−423.498	−23.231	−25.721
f5	1.743	1.718	1.975	1.815	1.725
f6	−1.725	−1.703	−1.746	−1.820	−1.629
f12	5.772	5.783	6.202	5.753	5.561

It can be appreciated by one having ordinary skill in the art that the description above is only embodiments of the present disclosure. In practice, one having ordinary skill in the art can make various modifications to these embodiments in forms and details without departing from the spirit and scope of the present disclosure.

Claims

1. A camera optical lens, comprising, from an object side to an image side: an aperture;a first lens having a positive refractive power;a second lens having a negative refractive power;a third lens having a positive refractive power;a fourth lens having a negative refractive power;a fifth lens having a positive refractive power; anda sixth lens having a negative refractive power,wherein the camera optical lens satisfies following conditions: −2.50≤(R5+R6)/(R5−R6)≤−1.00;−7.00≤f2/f≤−3.50,wheref denotes a focal length of the camera optical lens;f2 denotes a focal length of the second lens;R5 denotes a curvature radius of an object side surface of the third lens; andR6 denotes a curvature radius of an image side surface of the third lens.

2. The camera optical lens as described in claim 1, further satisfying a following condition: 0.50≤f5/f≤0.60,wheref5 denotes a focal length of the fifth lens.

3. The camera optical lens as described in claim 1, further satisfying a following condition: 0.40≤d10/d11≤0.60,whered10 denotes an on-axis distance from an image side surface of the fifth lens to an object side surface of the sixth lens; andd11 denotes an on-axis thickness of the sixth lens.

4. The camera optical lens as described in claim 1, further satisfying a following condition: 0.80≤(R11+R12)/(R11−R12)≤1.00,whereR11 denotes a curvature radius of an object side surface of the sixth lens; andR12 denotes a curvature radius of an image side surface of the sixth lens.