Camera optical lens

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Chinese Patent Applications Ser. No. 201711368111.8 and Ser. No. 201711368070.2 filed on Dec. 18, 2017, the entire content of which is incorporated herein by reference.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure generally relates to an optical lens, in particular to a camera optical lens suitable for handheld devices such as smart phones and digital cameras and imaging devices such as monitors and PC lenses.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand for miniature camera lens is increasing day by day, but the photosensitive devices of general camera lens are no other 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 shrink, coupled with the current development trend of electronic products being that their functions should be better and their shape should be thin and small, miniature camera lens with good imaging quality therefor has 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. And, with the development of technology and the increase of the diverse demands of users, and under this circumstances that the pixel area of photosensitive devices is shrinking steadily and the requirement of the system for the imaging quality is improving constantly, the five-piece, six-piece and seven-piece lens structure gradually appear in lens design. There is an urgent need for ultra-thin wide-angle camera lenses which have good optical characteristics and the chromatic aberration of which is fully corrected.

SUMMARY

In respect to the above problem, an objective of the present disclosure is to provide a camera optical lens which can achieve both high imaging performance and ultrathinness and a wide angle.

To solve the above problem, an embodiment of the present disclosure provides a camera optical lens. The camera optical lens comprises, in an order from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens.

The first lens is made of plastic material, the second lens is made of plastic material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of glass material, the sixth lens is made of plastic material, and the seventh lens is made of plastic material;

where the camera optical lens further satisfies the following conditions:

−10≤f1/f≤−3.1;

1.7≤n5≤2.2;

1≤f6/f7≤10;

1.7≤(R1+R2)/(R1−R2)≤10; and,

0.01≤d9/TTL≤0.2;

where f is the focal length of the camera optical lens; f1 is the focal length of the first lens; f6 is the focal length of the sixth lens; f7 is the focal length of the seventh lens; n5 is the refractive index of the fifth lens; R1 is the curvature radius of object side surface of the first lens; R2 is the curvature radius of image side surface of the first lens; d9 is the thickness on-axis of the fifth lens; and TTL is Total Track Length of the camera optical lens.

Compared with existing technologies, with above lens configuration the embodiment of the present disclosure may combine lens that have a special relation in terms of the data of focal length, refractive index, an optical length of the camera optical lens, thickness on-axis and curvature radius, so as to enable the camera optical lens to achieve ultrathinness and a wide angle while obtaining high imaging performance.

In one example, the camera optical lens further satisfies the following conditions: −9.66≤f1/f≤−3.3; 1.706≤n5≤1.987; 1.5≤f6/f7≤9.965; 1.846≤(R1+R2)/(R1−R2)≤9.6; and 0.048≤d9/TTL≤0.191.

In one example, the first lens has a negative refractive power with a convex object side surface and a concave image side surface relative to a proximal axis; the camera optical lens further satisfies the following conditions: 0.11≤d1≤0.33; where d1 is the thickness on-axis of the first lens.

In one example, the camera optical lens further satisfies the following conditions: 0.17≤d1≤0.26.

In one example, the second lens has a positive refractive power with a convex object side surface and a convex image side surface relative to a proximal axis; the camera optical lens further satisfies the following conditions: 0.4≤f2/f≤1.3; −1.26≤(R3+R4)/(R3−R4)≤−0.29; and 0.31≤d3≤1.25; where f is the focal length of the camera optical lens; f2 is the focal length of the second lens; R3 is the curvature radius of the object side surface of the second lens; R4 is the curvature radius of the image side surface of the second lens; and d3 is the thickness on-axis of the second lens.

In one example, the camera optical lens further satisfies the following conditions: 0.64≤f2/f≤1.04; −0.79≤(R3+R4)/(R3−R4)≤−0.36; and 0.49≤d3≤1.00.

In one example, the third lens has a negative refractive power; the camera optical lens further satisfies the following conditions: −12.52≤f3/f≤−1.82; −4.19≤(R5+R6)/(R5−R6)≤16.4; and 0.11≤d5≤0.33; where f is the focal length of the camera optical lens; f3 is the focal length of the third lens; R5 is the curvature radius of the object side surface of the third lens; and R6 is the curvature radius of the image side surface of the third lens; d5: the thickness on-axis of the third lens.

In one example, the camera optical lens further satisfies the following conditions: −7.83≤f3/f≤−2.28; −2.62≤(R5+R6)/(R5−R6)≤13.12; and 0.17≤d5≤0.26.

In one example, the fourth lens has a negative refractive power; the camera optical lens further satisfies the following conditions: −13.52≤f4/f≤−1.89; −15.53≤(R7+R8)/(R7−R8)≤5.09; and 0.12≤d7≤0.64; where f is the focal length of the camera optical lens; f4 is the focal length of the fourth lens; R7 is the curvature radius of the object side surface of the fourth lens; and R8 is the curvature radius of the image side surface of the fourth lens; d7 is the thickness on-axis of the fourth lens.

In one example, the camera optical lens further satisfies the following conditions: −8.45≤f4/f≤−2.36; −9.7≤(R7+R8)/(R7−R8)≤4.07; and 0.19≤d7≤0.51.

In one example, the fifth lens has a positive refractive power with a concave object side surface and a convex image side surface relative to a proximal axis; the camera optical lens further satisfies the following conditions: 0.2≤f5/f≤0.99; 0.64≤(R9+R10)/(R9−R10)≤4.17; and 0.24≤d9≤1.5; where f is the focal length of the camera optical lens; f5 is the focal length of the fifth lens; R9 is the curvature radius of the object side surface of the fifth lens; R10 is the curvature radius of the image side surface of the fifth lens; and d9 is the thickness on-axis of the fifth lens.

In one example, the camera optical lens further satisfies the following conditions: 0.33≤f5/f≤0.79; 1.03≤(R9+R10)/(R9−R10)≤3.34; and 0.38≤d9≤1.2.

In one example, the sixth lens has a negative refractive power with a concave image side surface relative to a proximal axis; the camera optical lens further satisfies the following conditions: −10.05≤f6/f≤−0.77; −1.25≤(R11+R12)/(R11−R12)≤4.52; and 0.11≤d11≤0.72; where f is the focal length of the camera optical lens; f6: the focal length of the sixth lens; R11 is the curvature radius of the object side surface of the sixth lens;and R12 is the curvature radius of the image side surface of the sixth lens; d11 is the thickness on-axis of the sixth lens.

In one example, the camera optical lens further satisfies the following conditions: −6.28≤f6/f≤−0.96; −0.78≤(R11+R12)/(R11−R12)≤3.61; and 0.17≤d11≤0.58.

In one example, the seventh lens has a negative refractive power with a concave image side surface relative to a proximal axis; the camera optical lens further satisfies the following conditions: 0.27≤(R13+R14)/(R13−R14)≤4.26; −1.92≤f7/f≤−0.34; and 0.16≤d13≤0.6; where f is the focal length of the camera optical lens; f7 is the focal length of the seventh lens; d13 is the thickness on-axis of the seventh lens; R13 is the curvature radius of the object side surface of the seventh lens; R14 is the curvature radius of the image side surface of the seventh lens.

In one example, the camera optical lens further satisfies the following conditions: 0.43≤(R13+R14)/(R13−R14)≤3.41; −1.2≤f7/f≤−0.42; and 0.25≤d13≤0.48.

In one example, the total optical length TTL of the camera optical lens is less than or equal to 6.03 mm.

In one example, the total optical length TTL of the camera optical lens is less than or equal to 5.76 mm.

In one example, the aperture F number of the camera optical lens is less than or equal to 2.21.

In one example, the aperture F number of the camera optical lens is less than or equal to 2.17.

An effect of the present disclosure is that the camera optical lens has excellent optical properties and a wide angle. The camera optical lens is ultra-thin, and its chromatic aberration is fully corrected. The camera optical lens is particularly suitable for a camera lens assembly of mobile phone and WEB camera lens that form by imaging elements, such as CCD and CMOS, with high pixels.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a camera optical lens in accordance with a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lens shown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG. 1;

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

FIG. 5 is a schematic diagram of a camera optical lens in accordance with a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lens shown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown in FIG. 5;

FIG. 8 presents the field curvature and distortion of the camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a camera optical lens in accordance with a third embodiment of the present invention;

FIG. 10 presents the longitudinal aberration of the camera optical lens shown in FIG. 9;

FIG. 11 presents the lateral color of the camera optical lens shown in FIG. 9;

FIG. 12 presents the field curvature and distortion of the camera optical lens shown in FIG. 9.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

To make the objectives, technical solutions, and advantages of the present disclosure clearer, the following describes the embodiments of the present disclosure in detail with reference to the accompanying drawings. A person of ordinary skill in the related art can understand that, in the embodiments of the present disclosure, many technical details are provided to make readers better understand this application. However, even without these technical details and any changes and modifications based on the following embodiments, technical solutions required to be protected by this application can be implemented.

Embodiment 1

As referring to the accompanying drawings, the present invention provides a camera optical lens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of the present invention, the camera optical lens 10 comprises 7 lenses. Specifically, from the object side to the image side, the camera optical lens 10 comprises in sequence: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7. Optical element like optical filter GF can be arranged between the seventh lens L7 and the image surface Si.

The first lens L1 is made of plastic material, the second lens L2 is made of plastic material, the third lens L3 is made of plastic material, the fourth lens L4 is made of plastic material, the fifth lens L5 is made of glass material, the sixth lens L6 is made of plastic material, the seventh lens L7 is made of plastic material.

Here, the focal length of the whole camera optical lens 10 is defined as f, the focal length of the first lens is defined as f1. The camera optical lens 10 further satisfies the following condition: −10≤f1/f≤−3.1, which fixes the negative refractive power of the first lens L1. If the upper limit of the set value is exceeded, although it benefits the ultra-thin development of lenses, the negative refractive power of the first lens L1 will be too strong, problem like aberration is difficult to be corrected, and it is also unfavorable for wide-angle development of lens. On the contrary, if the lower limit of the set value is exceeded, the negative refractive power of the first lens L1 becomes too weak, it is then difficult to develop ultra-thin lenses. In one example, the following condition shall be satisfied, −9.66≤f1/f≤−3.3.

The refractive index of the fifth lens L5 is n5. Here the following condition should be satisfied: 1.7≤n5≤2.2. This condition fixes the refractive index of the fifth lens L5, and a refractive index within this range benefits the ultra-thin development of lenses, and it also benefits the correction of aberration. In one example, the following condition shall be satisfied, 1.706≤n5≤1.987.

The focal length of the sixth lens L6 is defined as f6, and the focal length of the seventh lens L7 is defined as f7. The camera optical lens 10 should satisfy the following condition: 1≤f6/f7≤10, which fixes the ratio between the focal length f6 of the sixth lens L6 and the focal length f7 of the seventh lens L7. A ratio within this range can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. In one example, the following condition shall be satisfied, 1.5≤f6/f7≤9.965.

The curvature radius of the object side surface of the first lens L1 is defined as R1, the curvature radius of the image side surface of the first lens L1 is defined as R2. The camera optical lens 10 further satisfies the following condition: 1.7≤(R1+R2)/(R1−R2)≤10, which fixes the shape of the first lens L1, when the value is beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. In one example, the condition: 1.846≤(R1+R2)/(R1−R2)≤9.6 shall be satisfied.

The thickness on-axis of the fifth lens L5 is defined as d9, Total Track Length of the camera optical len is defined as TTL. The camera optical lens 10 further satisfies the following condition: 0.01≤d9/TTL≤0.2, which fixes the ratio between the thickness on-axis of the fifth lens L5 and TTL (Total Track Length) of the camera optical lens and is beneficial for realization of the ultra-thin lens. In one example, the condition: 0.048≤d9/TTL≤0.191 shall be satisfied.

When the focal length of the camera optical lens 10 of the present invention, the focal length of each lens, the refractive index of the related lens, and the total optical length, the thickness on-axis and the curvature radius of the camera optical lens satisfy the above conditions, the camera optical lens 10 has the advantage of high performance and satisfies the design requirement of low TTL.

In this embodiment, the object side surface of the first lens L1 is a convex surface relative to the proximal axis, its image side surface is a concave surface relative to the proximal axis, and it has a negative refractive power.

The thickness on-axis of the first lens L1 is defined as d1. The following condition: 0.11≤d1≤0.33 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. In one example, the condition 0.17≤d1≤0.26 shall be satisfied.

In this embodiment, the object side surface of the second lens L2 is a convex surface relative to the proximal axis, the image side surface of the second lens L2 is a convex surface relative to the proximal axis, and it has a positive refractive power.

The focal length of the whole camera optical lens 10 is f, the focal length of the second lens L2 is f2. The following condition should be satisfied: 0.4≤f2/f≤1.3. When the condition is satisfied, the positive refractive power of the second lens L2 is controlled within reasonable scope, the spherical aberration caused by the first lens L1 which has negative refractive power and the field curvature of the system then can be reasonably and effectively balanced. In one example, the condition 0.64≤f2/f≤1.04 should be satisfied.

The curvature radius of the object side surface of the second lens L2 is defined as R3, the curvature radius of the image side surface of the second lens L2 is defined as R4. The following condition should be satisfied: −1.26≤(R3+R4)/(R3−R4)≤−0.29, which fixes the shape of the second lens L2 and can effectively correct aberration of the camera optical lens. When beyond this range, with the development into the direction of ultra-thin and wide-angle lens, the problem like chromatic aberration on-axis is difficult to be corrected. In one example, the following condition shall be satisfied, −0.79≤(R3+R4)/(R3−R4)≤−0.36.

The thickness on-axis of the second lens L2 is defined as d3. The following condition: 0.31≤d3≤1.25 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. In one example, the condition 0.49≤d3≤1.00 shall be satisfied.

In this embodiment, the third lens L3 has a negative refractive power.

The focal length of the whole camera optical lens 10 is f, the focal length of the third lens L3 is f3. The following condition should be satisfied: −12.52≤f3/f≤−1.82. When the condition is satisfied, the field curvature of the system can be reasonably and effectively balanced for further improving the image quality. In one example, the condition −7.83≤f3/f≤−2.28 should be satisfied.

The curvature radius of the object side surface of the third lens L3 is defined as R5, the curvature radius of the image side surface of the third lens L3 is defined as R6. The following condition should be satisfied: −4.19≤(R5+R6)/(R5−R6)≤16.4, which is beneficial for the shaping of the third lens L3, and bad shaping and stress generation due to an extra large curvature of surface of the third lens L3 can be avoided. In one example, the following condition shall be satisfied, −2.62≤(R5+R6)/(R5−R6)≤13.12.

The thickness on-axis of the third lens L3 is defined as d5. The following condition: 0.11≤d5≤0.33 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. In one example, the condition 0.17≤d5≤0.26 shall be satisfied.

In this embodiment, the fourth lens L4 has a negative refractive power.

The focal length of the whole camera optical lens 10 is f, the focal length of the fourth lens L4 is f4. The following condition should be satisfied: −13.52≤f4/f≤−1.89. When the condition is satisfied, the appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity. In one example, the condition −8.45≤f4/f≤−2.36 should be satisfied.

The curvature radius of the object side surface of the fourth lens L4 is defined as R7, the curvature radius of the image side surface of the fourth lens L4 is defined as R8. The following condition should be satisfied: −15.53≤(R7+R8)/(R7−R8)≤5.09, which fixes the shape of the fourth lens L4. When beyond this range, with the development into the direction of ultra-thin and wide-angle lens, the problem like chromatic aberration of the off-axis picture angle is difficult to be corrected. In one example, the following condition shall be satisfied, −9.7≤(R7+R8)/(R7−R8)≤4.07.

The thickness on-axis of the fourth lens L4 is defined as d7. The following condition: 0.12≤d7≤0.64 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. In one example, the condition 0.19≤d7≤0.51 shall be satisfied.

In this embodiment, the object side surface of the fifth lens L5 is a concave surface relative to the proximal axis, the image side surface of the fifth lens L5 is a convex surface relative to the proximal axis. The fifth lens L5 has a positive refractive power.

The focal length of the whole camera optical lens 10 is f, the focal length of the fifth lens L5 is f5. The following condition should be satisfied: 0.2≤f5/f≤0.99, which can effectively make the light angle of the camera lens flat and reduces the tolerance sensitivity. In one example, the condition 0.33≤f5/f≤0.79 should be satisfied.

The curvature radius of the object side surface of the fifth lens L5 is defined as R9, the curvature radius of the image side surface of the fifth lens L5 is defined as R10. The following condition should be satisfied: 0.64≤(R9+R10)/(R9−R10)≤4.17, which fixes the shape of the fifth lens L5. When beyond this range, with the development into the direction of ultra-thin and wide-angle lens, the problem like chromatic aberration of the off-axis picture angle is difficult to be corrected. In one example, the following condition shall be satisfied, 1.03≤(R9+R10)/(R9−R10)≤3.34.

The thickness on-axis of the fifth lens L5 is defined as d9. The following condition: 0.24≤d9≤1.5 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. In one example, the condition 0.38≤d9≤1.2 shall be satisfied.

In this embodiment, the image side surface of the sixth lens L6 is a concave surface relative to the proximal axis. The sixth lens L6 has a negative refractive power.

The focal length of the whole camera optical lens 10 is f, the focal length of the sixth lens L6 is f6. The following condition should be satisfied: −10.05≤f6/f≤−0.77. When the condition is satisfied, the appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity. In one example, the condition −6.28≤f6/f≤−0.96 should be satisfied.

The curvature radius of the object side surface of the sixth lens L6 is defined as R11, the curvature radius of the image side surface of the sixth lens L6 is defined as R12. The following condition should be satisfied: −1.25≤(R11+R12)/(R11−R12)≤4.52, which fixes the shape of the sixth lens L6. When beyond this range, with the development into the direction of ultra-thin and wide-angle lens, the problem like chromatic aberration of the off-axis picture angle is difficult to be corrected. In one example, the following condition shall be satisfied, −0.78≤(R11+R12)/(R11−R12)≤3.61.

The thickness on-axis of the sixth lens L6 is defined as d11. The following condition: 0.11≤d11≤0.72 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. In one example, the condition 0.17≤d11≤0.58 shall be satisfied.

In this embodiment, the image side surface of the seventh lens L7 is a concave surface relative to the proximal axis, and it has a negative refractive power.

The focal length of the whole camera optical lens 10 is f, the focal length of the seventh lens L7 is f7. The following condition should be satisfied: −1.92≤f7/f≤−0.34. When the condition is satisfied, the appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity. In one example, the condition −1.2≤f7/f≤−0.42 should be satisfied.

The curvature radius of the object side surface of the seventh lens L7 is defined as R13, the curvature radius of the image side surface of the seventh lens L7 is defined as R14. The following condition should be satisfied: 0.27≤(R13+R14)/(R13−R14)≤4.26, which fixes the shape of the seventh lens L7. When beyond this range, with the development into the direction of ultra-thin and wide-angle lens, the problem like chromatic aberration of the off-axis picture angle is difficult to be corrected. In one example, the following condition shall be satisfied, 0.43≤(R13+R14)/(R13−R14)≤3.41.

The thickness on-axis of the seventh lens L7 is defined as d13. The following condition: 0.16≤d13≤0.6 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. In one example, the condition 0.25≤d13≤0.48 shall be satisfied.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 6.03 mm, it is beneficial for the realization of ultra-thin lenses. In one example, the total optical length TTL of the camera optical lens 10 is less than or equal to 5.76 mm.

In this embodiment, the aperture F number of the camera optical lens 10 is less than or equal to 2.21. A large aperture has better imaging performance. In one example, the aperture F number of the camera optical lens 10 is less than or equal to 2.17.

With such design, the total optical length TTL of the whole camera optical lens 10 can be made as short as possible, thus the miniaturization characteristics can be maintained.

In the following, an example will be used to describe the camera optical lens 10 of the present invention. The symbols recorded in each example are as follows. The unit of distance, radius and center thickness is mm

TTL (Total Track Length): Optical length (the distance on-axis from the object side surface of the first lens L1 to the image surface).

In one example, inflexion points and/or arrest points can also be arranged on the object side surface and/or image side surface of the lens, so that the demand for high quality imaging can be satisfied, the description below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the following, the unit of the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the tables 1 and 2.

	TABLE 1
	R	d	nd	νd

S1	∞	d0=	0.075
R1	48.658	d1=	0.220	nd1	1.6613	ν1	20.37
R2	16.147	d2=	0.050
R3	2.182	d3=	0.625	nd2	1.5352	ν2	56.09
R4	−9.596	d4=	0.030
R5	5.438	d5=	0.220	nd3	1.6510	ν3	21.51
R6	3.545	d6=	0.594
R7	−1885.663	d7=	0.297	nd4	1.6713	ν4	19.24
R8	7.518	d8=	0.428
R9	−8.406	d9=	1.000	nd5	1.7130	ν5	53.94
R10	−1.056	d10=	0.020
R11	19.112	d11=	0.250	nd6	1.5352	ν6	56.09
R12	2.132	d12=	0.296
R13	−40.364	d13=	0.310	nd7	1.5388	ν7	56.07
R14	1.252	d14=	0.433
R15	∞	d15=	0.210	ndg	1.5168	νg	64.17
R16	∞	d16=	0.500

The meanings of the above symbols are as follows.

S1: Aperture;

R: The curvature radius of the optical surface, the central curvature radius in case of lens;

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

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

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

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

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

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

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

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

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

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

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

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

R13: The curvature radius of the object side surface of the seventh lens L7;

R14: The curvature radius of the image side surface of the seventh lens L7;

R15: The curvature radius of the object side surface of the optical filter GF;

R16: The curvature radius of the image side surface of the optical filter GF;

d: The thickness on-axis of the lens and the distance on-axis between the lens;

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

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

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

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

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

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

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

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

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

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

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

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

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

d13: The thickness on-axis of the seventh lens L7;

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

d15: The thickness on-axis of the optical filter GF;

d16: The distance on-axis from the image side surface to the image surface of the optical filter GF;

nd: The refractive index of the d line;

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

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

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

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

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

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

nd7: The refractive index of the d line of the seventh lens L7;

ndg: The refractive index of the d line of the optical filter GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

v7: The abbe number of the seventh lens L7;

vg: The abbe number of the optical filter GF.

Table 2 shows the aspherical surface data of the camera optical lens 10 in the embodiment 1 of the present invention.

	TABLE 2
	Conic Index	Aspherical Surface Index

	k	A4	A6	A8	A10	A12	A14	A16

R1	0.0000E+00	−7.5199E−02	2.6855E−02	3.6213E−03	4.2168E−02	−1.1360E−01	9.7585E−02	−2.9141E−02
R2	0.0000E+00	−1.1066E−01	8.6230E−02	2.0409E−02	−1.2798E−01	1.1275E−01	−3.5027E−02	7.9060E−04
R3	−5.8927E+00	3.6575E−02	4.5353E−02	−6.5326E−02	2.9028E−02	−2.8447E−02	3.6325E−03	1.1935E−03
R4	−1.3471E+02	−2.0180E−02	−3.9684E−02	1.0011E−01	−1.5170E−01	−1.3310E−02	1.1804E−01	−4.7768E−02
R5	0.0000E+00	−8.0713E−02	−3.2325E−03	5.8023E−02	1.2063E−01	−5.2677E−01	5.6222E−01	−1.8398E−01
R6	0.0000E+00	−1.0052E−01	2.0986E−02	2.7626E−02	−2.4667E−02	−6.9284E−02	9.0874E−02	−2.4830E−02
R7	1.0000E+02	−1.7755E−01	−2.9168E−02	−2.2700E−02	1.0708E−02	3.2026E−03	−2.4965E−02	1.9022E−02
R8	−6.8008E−01	−1.1764E−01	−3.7101E−03	1.9961E−03	1.1202E−03	2.0862E−03	−8.0380E−04	6.2603E−04
R9	1.1022E+01	−3.5996E−04	2.4517E−02	−9.3979E−03	−5.5001E−04	7.6565E−04	2.2067E−05	−6.3773E−05
R10	−4.1668E+00	−5.2639E−02	3.0577E−02	−1.0022E−03	−5.5706E−04	−1.3984E−04	−3.3398E−05	1.2892E−05
R11	0.0000E+00	−2.4426E−02	1.5369E−04	8.5976E−05	−2.2966E−04	1.3936E−05	6.6090E−06	−1.5212E−07
R12	−1.1454E+01	−3.4229E−02	−1.5616E−03	−1.7450E−04	6.7639E−06	3.1648E−06	1.0701E−06	1.3388E−07
R13	0.0000E+00	−2.4750E−02	5.7867E−04	2.2254E−04	9.5545E−06	−4.0879E−07	−7.7199E−08	2.7945E−08
R14	−1.0541E+01	−2.6480E−02	5.6178E−03	−3.8943E−04	−2.0484E−05	−8.5727E−07	2.6854E−07	1.2401E−08

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 are aspheric surface indexes.

IH: Image height

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

For convenience, the aspheric surface of each lens surface uses the aspheric surfaces shown in the above condition (1). However, the present invention is not limited to the aspherical polynomials form shown in the condition (1).

Table 3 shows the inflexion points design data of the camera optical lens 10 lens in embodiment 1 of the present invention. Table 4 shows the arrest point design data of the camera optical lens 10 lens in embodiment 1 of the present invention. In which, R1 and R2 represent respectively the object side surface and image side surface of the first lens L1, R3 and R4 represent respectively the object side surface and image side surface of the second lens L2, R5 and R6 represent respectively the object side surface and image side surface of the third lens L3, R7 and R8 represent respectively the object side surface and image side surface of the fourth lens L4, R9 and R10 represent respectively the object side surface and image side surface of the fifth lens L5, R11 and R12 represent respectively the object side surface and image side surface of the sixth lens L6, R13 and R14 represent respectively the object side surface and image side surface of the seventh lens L7. The data in the column named “inflexion point position” are the vertical distances from the 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” are the vertical distances from the arrest points arranged on each lens surface to the optic axis of the camera optical lens 10.

	TABLE 3
	Inflexion point	Inflexion point	Inflexion point
	number	position 1	position 2

	R1	1	0.155
	R2	1	0.235
	R3	1	0.845
	R4	0
	R5	1	0.475	0.865
	R6	2	0.555	0.965
	R7	0
	R8	2	0.315	1.155
	R9	2	0.755	1.225
	R10	2	0.985	1.565
	R11	2	0.425	1.995
	R12	2	0.645	2.115
	R13	1	1.975
	R14	2	0.675	2.605

	TABLE 4
	Arrest point	Arrest point
	number	position 1

	R1	1	0.265
	R2	1	0.415
	R3	0
	R4	0
	R5	0
	R6	0
	R7	0
	R8	1	0.525
	R9	0
	R10	0
	R11	1	0.735
	R12	1	1.215
	R13	0
	R14	0	2.155

FIG. 2 shows the longitudinal aberration schematic diagrams after light with a wavelength of 470 nm, 555 nm and 650 nm passes the camera optical lens 10 in the first embodiment. FIG. 3 shows the lateral color schematic diagrams after light with a wavelength of 470 nm, 555 nm and 650 nm passes the camera optical lens 10 in the first embodiment. FIG. 4 shows the field curvature and distortion schematic diagrams after light with a wavelength of 555 nm passes the camera optical lens 10 in the first embodiment, the field curvature S in FIG. 4 is a field curvature in the sagittal direction, T is a field curvature in the meridian direction.

The following Table 13 shows the various values of the embodiments 1, 2, 3 and the values corresponding with the parameters which are already specified in the conditions.

As shown in Table 13, the first embodiment satisfies the various conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 1.856 mm, the full vision field image height is 2.994 mm, the vision field angle in the diagonal direction is 76.1°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of its symbols is the same as that of embodiment 1, in the following, only the differences are described.

Table 5 and table 6 show the design data of the camera optical lens 20 in embodiment 2 of the present invention.

	TABLE 5
	R	d	nd	νd

S1	∞	d0=	0.050
R1	4.561	d1=	0.210	nd1	1.6613	ν1	20.37
R2	3.666	d2=	0.025
R3	2.281	d3=	0.614	nd2	1.5352	ν2	56.09
R4	−7.225	d4=	0.573
R5	−4.364	d5=	0.210	nd3	1.6397	ν3	23.53
R6	−12.349	d6=	0.293
R7	−3.274	d7=	0.428	nd4	1.6613	ν4	20.37
R8	−4.242	d8=	0.222
R9	−2.500	d9=	0.472	nd5	1.7550	ν5	51.16
R10	−1.179	d10=	0.035
R11	5.567	d11=	0.483	nd6	1.5352	ν6	56.09
R12	2.792	d12=	0.050
R13	2.401	d13=	0.335	nd7	1.6613	ν7	20.37
R14	1.150	d14=	0.788
R15	∞	d15=	0.210	ndg	1.5168	νg	64.17
R16	∞	d16=	0.500

Table 6 shows the aspherical surface data of each lens of the camera optical lens 20 in embodiment 2 of the present invention.

	TABLE 6
	Conic Index	Aspherical Surface Index

	k	A4	A6	A8	A10	A12	A14	A16

R1	0.0000E+00	−6.9439E−02	2.2297E−02	−6.0018E−03	−5.5754E−02	7.1727E−02	2.0085E−02	−4.2845E−02
R2	0.0000E+00	−2.3766E−02	−6.7329E−02	7.1543E−02	−5.2426E−03	−4.6588E−03	0.0000E+00	0.0000E+00
R3	3.8966E−01	4.3183E−02	−1.3205E−01	1.0047E−01	3.4088E−02	−1.1555E−01	1.1463E−03	4.2390E−02
R4	0.0000E+00	−4.7719E−02	3.7326E−02	−1.7812E−01	1.5938E−01	3.2746E−02	−1.7799E−01	9.1835E−02
R5	0.0000E+00	−7.8160E−02	−2.5891E−03	−5.7782E−02	1.8213E−02	2.8016E−03	3.6673E−02	−8.2701E−03
R6	0.0000E+00	−3.2943E−02	2.6255E−02	−3.5320E−02	5.1720E−03	4.1958E−03	−7.1481E−04	2.1659E−03
R7	6.5037E+00	−3.4879E−02	3.7219E−02	3.8542E−02	−2.0340E−02	−8.2143E−03	3.6171E−03	1.7847E−03
R8	5.8374E+00	−8.8703E−02	3.5481E−02	−1.3626E−02	1.4140E−02	3.2900E−03	−5.9600E−03	1.3642E−03
R9	2.8260E−01	−5.5674E−03	2.4034E−02	−2.4593E−03	−1.1935E−03	6.7502E−04	−3.4536E−04	−7.1813E−05
R10	−3.4414E+00	−3.4277E−02	3.7299E−02	−6.0332E−03	−3.6945E−04	−3.4594E−04	4.7819E−05	0.0000E+00
R11	0.0000E+00	−1.3548E−02	1.1675E−03	−4.3008E−04	−1.2330E−04	3.5030E−05	9.0413E−07	−3.5487E−07
R12	−1.4208E+01	−8.7577E−03	−2.5448E−03	3.7763E−05	−8.5100E−05	2.0284E−05	5.4183E−07	−2.0091E−07
R13	−2.3148E+00	−4.9111E−02	5.1750E−03	2.4257E−05	7.6238E−06	−2.5050E−06	−6.4576E−07	4.5078E−08
R14	−4.8714E+00	−2.1433E−02	2.5217E−03	−7.7770E−05	1.5857E−05	−9.3973E−07	−5.9281E−07	5.0960E−08

Table 7 shows the design data of inflexion points of lens of the camera optical lens 20 in embodiment 2 of the present invention. Table 8 shows the design data of the arrest point of lens of the camera optical lens 20 in embodiment 2 of the present invention.

	TABLE 7
	Inflexion point	Inflexion point	Inflexion point
	number	position 1	position 2

	R1	1	0.565
	R2	0
	R3	2	0.835	0.955
	R4	0
	R5	1	0.935
	R6	1	1.035
	R7	0
	R8	1	1.095
	R9	0
	R10	2	0.925	1.325
	R11	2	1.085	2.085
	R12	1	0.845
	R13	1	0.835
	R14	1	0.875

	TABLE 8
	Arrest point	Arrest point
	number	position 1

	R1	1	0.245
	R2	1	0.345
	R3
	R4
	R5
	R6	1	0.975
	R7	1	0.455
	R8	2	0.635
	R9
	R10
	R11
	R12
	R13	1	1.205
	R14	1	1.835

FIG. 6 shows the longitudinal aberration schematic diagrams after light with a wavelength of 470 nm, 555 nm and 650 nm passes the camera optical lens 20 in the second embodiment. FIG. 7 shows the lateral color schematic diagrams after light with a wavelength of 470 nm, 555 nm and 650 nm passes the camera optical lens 20 in the second embodiment. FIG. 8 shows the field curvature and distortion schematic diagrams after light with a wavelength of 555 nm passes the camera optical lens 20 in the second embodiment.

As shown in Table 13, the second embodiment satisfies the various conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 1.797 mm, the full vision field image height is 2.994 mm, the vision field angle in the diagonal direction is 74.7°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as embodiment 1, the meaning of its symbols is the same as that of embodiment 1, in the following, only the differences are described.

Table 9 and table 10 show the design data of the camera optical lens 30 in embodiment 3 of the present invention.

	TABLE 9
	R	d	nd	νd

S1	∞	d0=	0.040
R1	8.010	d1=	0.210	nd1	1.6613	ν1	20.37
R2	4.210	d2=	0.050
R3	2.261	d3=	0.831	nd2	1.5352	ν2	56.09
R4	−5.646	d4=	0.030
R5	2.696	d5=	0.210	nd3	1.6713	ν3	19.24
R6	2.244	d6=	0.690
R7	6.912	d7=	0.234	nd4	1.6713	ν4	19.24
R8	3.765	d8=	0.421
R9	−7.032	d9=	0.693	nd5	1.7725	ν5	49.50
R10	−1.286	d10=	0.020
R11	−12.911	d11=	0.210	nd6	1.5352	ν6	56.09
R12	56.081	d12=	0.254
R13	−4.672	d13=	0.402	nd7	1.5388	ν7	56.07
R14	1.417	d14=	0.407
R15	∞	d15=	0.210	ndg	1.5168	νg	64.17
R16	∞	d16=	0.500

Table 10 shows the aspherical surface data of each lens of the camera optical lens 30 in embodiment 3 of the present invention.

	TABLE 10
	Conic Index	Aspherical Surface Index

	k	A4	A6	A8	A10	A12	A14	A16

R1	0.0000E+00	−7.2387E−02	2.8879E−02	9.7242E−03	1.0819E−02	−8.2435E−02	9.2439E−02	−3.3052E−02
R2	−5.3769E+01	−6.1446E−02	5.1139E−02	5.6275E−02	−1.7211E−01	1.2577E−01	−3.5942E−03	−2.3098E−02
R3	−1.3236E+01	4.1675E−02	−7.7561E−03	7.6823E−03	−2.8244E−02	−6.4844E−02	1.1863E−01	−5.8769E−02
R4	−3.6903E+01	−5.5855E−02	−4.9961E−02	1.3132E−01	−1.4150E−01	6.5706E−03	6.7598E−02	−3.0938E−02
R5	0.0000E+00	−8.3607E−02	−2.7602E−02	1.0418E−01	−8.1198E−02	−2.9572E−02	6.7662E−02	−2.4195E−02
R6	0.0000E+00	−8.5282E−02	−1.7341E−02	4.5079E−02	−2.3423E−02	−3.6522E−02	4.1318E−02	−1.2653E−02
R7	2.0763E+01	−1.7661E−01	−2.2136E−02	−1.1673E−02	1.3684E−02	4.9783E−03	−2.6571E−02	1.3938E−02
R8	−8.8661E+00	−1.1906E−01	6.4730E−05	−1.1550E−03	−4.0844E−04	1.6302E−03	−6.9913E−04	7.2799E−04
R9	1.3206E+01	1.8054E−02	1.3855E−02	−8.2519E−03	−1.3138E−05	7.8891E−04	3.6018E−06	−6.7641E−05
R10	−4.2291E+00	−4.8477E−02	2.9813E−02	−1.0243E−03	−6.2215E−04	−1.5500E−04	−3.5569E−05	1.1551E−05
R11	0.0000E+00	−1.8947E−02	3.5452E−04	1.4794E−04	−2.2958E−04	1.5059E−05	7.3363E−06	−5.1621E−09
R12	4.5187E+02	−2.4227E−02	−1.5754E−04	−1.2586E−04	4.7671E−06	3.1265E−06	7.1723E−07	1.2211E−07
R13	0.0000E+00	−1.3255E−02	1.2954E−03	2.7190E−04	1.8748E−05	−1.1014E−07	−1.2256E−07	−5.4001E−08
R14	−1.0683E+01	−3.0906E−02	5.2587E−03	−4.5861E−04	−1.2690E−05	3.2725E−07	3.5719E−07	−3.6743E−09

Table 11 shows the design data of inflexion points lens of the camera optical lens 30 in embodiment 3 of the present invention. Table 12 shows the design data of the arrest point of the camera optical lens 30 in embodiment 3 of the present invention.

	TABLE 11
	Inflexion point	Inflexion point	Inflexion point
	number	position 1	position 2

	R1	1	0.425
	R2	1	0.585
	R3	1	0.795
	R4	0
	R5	1	0.715
	R6	1	0.715
	R7	1	0.265
	R8	2	0.405	1.195
	R9	2	0.785	1.085
	R10	2	0.995	1.485
	R11	1	1.875
	R12	2	0.255	2.015
	R13	1	1.675
	R14	2	0.655	2.535

	TABLE 12
	Arrest point	Arrest point
	number	position 1

	R1	1	0.855
	R2	0
	R3	0
	R4	0
	R5	0
	R6	0
	R7	1	0.455
	R8	1	0.705
	R9	0
	R10	0
	R11	0
	R12	1	0.435
	R13	0
	R14	1	1.675

FIG. 10 shows the longitudinal aberration schematic diagrams after light with a wavelength of 470 nm, 555 nm and 650 nm passes the camera optical lens 30 in the third embodiment. FIG. 11 shows the lateral color schematic diagrams after light with a wavelength of 470 nm, 555 nm and 650 nm passes the camera optical lens 30 in the third embodiment. FIG. 12 shows the field curvature and distortion schematic diagrams after light with a wavelength of 555 nm passes the camera optical lens 30 in the third embodiment.

The following Table 13 shows the values corresponding with the conditions in this embodiment according to the above conditions. Obviously, this embodiment satisfies the various conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 1.896 mm, the full vision field image height is 2.994 mm, the vision field angle in the diagonal direction is 75.59°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

	TABLE 13
	Embodi-	Embodi-	Embodi-
	ment 1	ment 2	ment 3

f	3.897	3.864	3.886
f1	−36.320	−30.928	−13.603
f2	3.374	3.303	3.122
f3	−16.262	−10.578	−24.331
f4	−11.050	−26.123	−12.581
f5	1.597	2.550	1.928
f6	−4.492	−11.107	−19.524
f7	−2.240	−3.705	−1.966
f6/f7	2.005	2.998	9.930
(R1 + R2)/(R1 − R2)	1.993	9.199	3.216
(R3 + R4)/(R3 − R4)	−0.629	−0.520	−0.428
(R5 + R6)/(R5 − R6)	4.745	−2.093	10.935
(R7 + R8)/(R7 − R8)	0.992	−7.764	3.393
(R9 + R10)/(R9 − R10)	1.287	2.783	1.448
(R11 + R12)/(R11 − R12)	1.251	3.012	−0.626
(R13 + R14)/(R13 − R14)	0.940	2.838	0.534
f1/f	−9.320	−8.004	−3.500
f2/f	0.866	0.855	0.803
f3/f	−4.173	−2.737	−6.261
f4/f	−2.836	−6.760	−3.237
f5/f	0.410	0.660	0.496
f6/f	−1.153	−2.874	−5.024
f7/f	−0.575	−0.959	−0.506
d1	0.220	0.210	0.210
d3	0.625	0.614	0.831
d5	0.220	0.210	0.210
d7	0.297	0.428	0.234
d9	1.000	0.472	0.693
d11	0.250	0.483	0.210
d13	0.310	0.335	0.402
Fno	2.100	2.150	2.050
TTL	5.484	5.448	5.373
d9/TTL	0.182	0.087	0.129
n1	1.6613	1.6613	1.6613
n2	1.5352	1.5352	1.5352
n3	1.6510	1.6397	1.6713
n4	1.6713	1.6613	1.6713
n5	1.7130	1.7550	1.7725
n6	1.5352	1.5352	1.5352
n7	1.5388	1.6613	1.5388

Persons of ordinary skill in the related art can understand that, the above embodiments are specific examples for implementation of the present disclosure, and during actual application, various changes may be made to the forms and details of the examples without departing from the spirit and scope of the present disclosure.