CN105988196B - Optical imaging lens - Google Patents

Abstract

The present invention discloses an optical imaging lens, comprising an aperture and an optical group, wherein the optical group comprises, from the object side to the image side, a first lens having positive refractive power; a second lens having negative refractive power; a third lens having positive refractive power; a fourth lens having positive refractive power; and a fifth lens having negative refractive power; wherein the overall focal length of the optical imaging lens is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the object side surface curvature radius of the fifth lens is R9, the image side surface curvature radius of the fifth lens is R10, and the following conditions are satisfied: |f5|<|fn|, wherein n=1, 2, 3 and 4; ‑0.45<f5/f<‑0.2;0<(R9+R10)/(R9‑R10)<0.5.

Description

Optical Imaging Lens

technical field

The invention relates to an optical lens, in particular to a miniaturized five-piece optical imaging lens applied to electronic products.

Background technique

High-quality small photographic lenses are standard equipment for various mobile devices, and with the progress of semiconductor manufacturing, the pixel area on the electronic photosensitive component is getting smaller and smaller, which in turn requires more fine-grained resolution of the camera lens power, so that more detailed picture quality can be presented.

The 3-4 lens types commonly used in mobile devices, such as mobile phones, tablet computers, and other wearable electronic devices, such as US 7,564,635 and US 7,920,340, cannot present a more detailed image quality; while the five-element lens Smaller lenses may have better image quality. However, when the aperture is large, such as US 8,605,368, US8,649,113, and Taiwan application numbers 102137030 and 102121155, it is often accompanied by sensitivity problems in manufacturing and assembly, making mass production difficult. Increase the cost of mass production. Or in order to reduce the assembly tolerance, the surrounding imaging quality has to be sacrificed, so that the surrounding imaging is blurred or deformed.

Therefore, there is a need for a high-quality lens with high resolution and low manufacturing and assembly tolerances.

Contents of the invention

The technical problem to be solved by the present invention is to provide an optical imaging lens, especially a five-piece optical imaging lens with high picture number, high resolution, low distortion and low manufacturing and assembly tolerance sensitivity.

In order to solve the above problems, the present invention provides an optical imaging lens, which includes an aperture and an optical group, and the optical group includes in sequence from the object side to the image side: a first lens, which has positive refractive power and is made of plastic , the near optical axis of the object side surface is convex, and both the object side surface and the image side surface are aspherical; a second lens has negative refractive power and is made of plastic, and the near optical axis of the object side surface is convex , the image-side surface near the optical axis is concave, the object-side surface and the image-side surface are both aspherical; a third lens has positive refractive power and is made of plastic, and the object-side surface near the optical axis is convex , the surface on the object side and the surface on the image side are both aspherical; a fourth lens has positive refractive power and is made of plastic material, the surface on the object side is concave near the optical axis, and the surface on the image side is convex near the optical axis , the surface on the object side and the surface on the image side are both aspherical; a fifth lens has negative refractive power and is made of plastic material, the surface on the object side is concave near the optical axis, and the surface on the image side is concave near the optical axis , the object-side surface and the image-side surface are both aspherical, and at least one inflection point is provided on the object-side surface and the image-side surface; the aperture is arranged between the image-side surface of the first lens and an object ;

The overall focal length of the optical imaging lens is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, and the fifth The focal length of the lens is f5, the radius of curvature of the object-side surface of the fifth lens is R9, the radius of curvature of the image-side surface of the fifth lens is R10, and the following conditions are satisfied:

|f5|<|fn|, where n=1, 2, 3 and 4;

-0.45<f5/f<-0.2;

0<(R9+R10)/(R9-R10)<0.5.

When |f5|<|fn| satisfies the above conditions, the refractive power of the first lens, the second lens, the third lens, and the fourth lens can be uniformly arranged, and the various aberrations of the lens group can be balanced, so that there is better Imaging, and at the same time reduce the assembly sensitivity of the first lens, the second lens, the third lens, and the fourth lens, further reducing mass production costs.

When f5/f satisfies the above conditions, the refractive power of the fifth lens can be controlled within an appropriate range, reducing the assembly sensitivity of the lens, and at the same time maintaining a long enough back focal length to place infrared filter elements and provide electronic sensitivity Space required for component assembly.

When (R9+R10)/(R9-R10) satisfies the above conditions, the shape of the fifth lens can be controlled, so that when the aspheric surface shape is configured, it is easy to control the internal reflection on each surface of the fifth lens. of ghost images.

Preferably, the overall focal length of the optical imaging lens is f, the focal length of the first lens is f1, and the following conditions are satisfied: 0.7<f1/f<0.81. In this way, the refractive power of the first lens is maintained in an appropriate range, and the maximum field of view (FOV) of the optical imaging lens is maintained at an appropriate angle, while reducing the assembly sensitivity of the first lens.

Preferably, the overall focal length of the optical imaging lens is f, the focal length of the second lens is f2, and the following conditions are satisfied: -1.5<f2/f<-1. Thereby, the refractive power of the second lens is maintained in an appropriate range, and at the same time, the assembly sensitivity of the second lens is reduced.

Preferably, the radius of curvature of the object-side surface of the second lens is R3, the radius of curvature of the image-side surface of the second lens is R4, and the following conditions are met: 0.5<(R3-R4)/(R3+R4)<0.85 . Thereby, spherical aberration and astigmatism of the optical imaging lens are effectively reduced.

Preferably, the distance from the aperture to the image-side surface of the fifth lens on the optical axis is SD, the distance from the object-side surface of the first lens to the image-side surface of the fifth lens on the optical axis is TD, and Satisfy the following condition: 0.89<SD/TD<1.05. In this way, the proper configuration of the aperture position can make the chief light entering the electronic photosensitive component conform to the electronic photosensitive component, reduce the phenomenon of color shift, and make the periphery of the image surface have better relative illuminance, reducing the occurrence of vignetting.

Preferably, the thickness of the second lens on the optical axis is CT2, the thickness of the third lens on the optical axis is CT3, and the following condition is satisfied: 2<CT3/CT2<3.5. In this way, the molding thicknesses of the second lens and the third lens are effectively controlled, making injection molding easier.

Preferably, the overall focal length of the optical imaging lens is f, the focal length of the third lens is f3, and the following conditions are satisfied: 4.5<f3/f<12. Thereby, the refractive power of the third lens is maintained in an appropriate range, and at the same time, the assembly sensitivity of the third lens is reduced.

Preferably, the overall focal length of the optical imaging lens is f, the focal length of the fourth lens is f4, and the following conditions are satisfied: 0.25<f4/f<0.6. Thereby, the refractive power of the fourth lens is maintained in an appropriate range, and the refractive power of the fifth lens is moderately dispersed, so as to reduce the assembly sensitivity of the fourth lens and the fifth lens.

Preferably, the distance between the second lens and the third lens on the optical axis is T23, the distance between the third lens and the fourth lens on the optical axis is T34, and the following conditions are satisfied: 0.6<T23/T34 ≦1. Thereby, the total length of the optical imaging lens of the present invention is effectively reduced.

Preferably, the dispersion coefficient of the first lens is V1, the dispersion coefficient of the second lens is V2, the dispersion coefficient of the third lens is V3, the dispersion coefficient of the fourth lens is V4, and the dispersion coefficient of the fifth lens The coefficient is V5 and satisfies the following condition: -40<V2-Vn<-25, where n=1, 3, 4 and 5. Thereby, the chromatic aberration of the optical imaging lens of the present invention is effectively reduced.

In addition, in order to solve the above problems, the present invention also provides an optical imaging lens, which includes an aperture and an optical group, and the optical group includes in sequence from the object side to the image side: a first lens with positive refractive power, its The near optical axis of the object side surface is convex, and both the object side surface and the image side surface are aspherical; a second lens has negative refractive power and is made of plastic material, and the near optical axis of the object side surface is convex, and its The near optical axis of the image side surface is concave, the object side surface and the image side surface are both aspherical; a third lens has positive refractive power and is made of plastic material, and the near optical axis of the object side surface is convex, and its Both the object-side surface and the image-side surface are aspherical; a fourth lens has positive refractive power and is made of plastic material, and the near optical axis of the image-side surface is convex, and both the object-side surface and the image-side surface are aspherical ; a fifth lens, which has negative refractive power and is made of plastic material, its object side surface is concave near the optical axis, its image side surface is concave near the optical axis, and its object side surface and image side surface are all aspherical , and both the object-side surface and the image-side surface are provided with at least one inflection point; the aperture is provided between the image-side surface of the first lens and an object;

The overall focal length of the optical imaging lens is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, and the fifth The focal length of the lens is f5, the object-side surface radius of curvature of the second lens is R3, and the image-side surface radius of curvature of the second lens is R4, and the following conditions are satisfied:

|f5|<|f4|<|fn|, where n=1, 2 and 3;

0.5<(R3-R4)/(R3+R4)<0.85.

When |f5|<|f4|<|fn| satisfies the above conditions, the refractive power of the first lens, the second lens, the third lens, and the fourth lens can be uniformly arranged, and various aberrations of the lens group can be balanced. Better imaging is obtained, and at the same time, the assembly sensitivity of the first lens, the second lens, the third lens, and the fourth lens is reduced, further reducing mass production costs.

When (R3-R4)/(R3+R4) satisfies the above conditions, the spherical aberration and astigmatism of the optical imaging lens can be effectively reduced.

Preferably, the overall focal length of the optical imaging lens is f, the focal length of the first lens is f1, and the following conditions are satisfied: 0.7<f1/f<0.81. In this way, the refractive power of the first lens is maintained in an appropriate range, and the maximum field of view (FOV) of the optical imaging lens is maintained at an appropriate angle, while reducing the assembly sensitivity of the first lens.

Preferably, the overall focal length of the optical imaging lens is f, the focal length of the fifth lens is f5, and the following conditions are satisfied: -0.45<f5/f<-0.2. In this way, the refractive power of the fifth lens can be controlled within an appropriate range, reducing the assembly sensitivity of the lens, and at the same time maintaining a sufficiently long back focal length to place the infrared filter element and provide the space required for the assembly of the electronic photosensitive element .

Preferably, the distance from the aperture to the image-side surface of the fifth lens on the optical axis is SD, the distance from the object-side surface of the first lens to the image-side surface of the fifth lens on the optical axis is TD, and Satisfy the following condition: 0.89<SD/TD<1.05. In this way, the proper configuration of the aperture position can make the chief light entering the electronic photosensitive component conform to the electronic photosensitive component, reduce the phenomenon of color shift, and make the periphery of the image surface have better relative illuminance, reducing the occurrence of vignetting.

Preferably, the thickness of the third lens on the optical axis is CT3, the thickness of the fourth lens on the optical axis is CT4, and the following conditions are satisfied: 1<CT4/CT3<1.4. In this way, the third lens and the fourth lens have appropriate thicknesses, making injection molding easier.

Preferably, the dispersion coefficient of the first lens is V1, the dispersion coefficient of the second lens is V2, the dispersion coefficient of the third lens is V3, the dispersion coefficient of the fourth lens is V4, and the dispersion coefficient of the fifth lens The dispersion coefficient is V5, and the following conditions are satisfied: -40<V2-Vn<-25, where n=1, 3, 4 and 5. Thereby, the chromatic aberration of the optical imaging lens of the present invention is effectively reduced.

Preferably, the radius of curvature of the object-side surface of the fifth lens is R9, the radius of curvature of the image-side surface of the fifth lens is R10, and the following conditions are satisfied: 0<(R9+R10)/(R9-R10)<0.5 . Thereby, the appearance of the fifth lens can be controlled, so that when the aspheric surface shape is configured, it is easy to control the ghost image generated by internal reflection on each surface of the fifth lens.

Preferably, the overall focal length of the optical imaging lens is f, the focal length of the fourth lens is f4, and the following conditions are satisfied: 0.25<f4/f<0.6. Thereby, the refractive power of the fourth lens is maintained in an appropriate range, and the refractive power of the fifth lens is moderately dispersed, so as to reduce the assembly sensitivity of the fourth lens and the fifth lens.

Preferably, the maximum field of view of the optical imaging lens is FOV, and satisfies the following condition: 72<FOV<84. Thereby, the optical imaging lens can have a relatively large viewing angle.

Description of drawings

FIG. 1A is a schematic diagram of an optical imaging lens according to a first embodiment of the present invention.

FIG. 1B is a graph of spherical aberration, astigmatism and distortion of the optical imaging lens of the first embodiment from left to right.

FIG. 2A is a schematic diagram of an optical imaging lens according to a second embodiment of the present invention.

2B is a graph of spherical aberration, astigmatism and distortion of the optical imaging lens of the second embodiment in order from left to right.

FIG. 3A is a schematic diagram of an optical imaging lens according to a third embodiment of the present invention.

FIG. 3B is a graph of spherical aberration, astigmatism and distortion of the optical imaging lens of the third embodiment in order from left to right.

FIG. 4A is a schematic diagram of an optical imaging lens according to a fourth embodiment of the present invention.

4B is a graph of spherical aberration, astigmatism and distortion of the optical imaging lens of the fourth embodiment in order from left to right.

FIG. 5A is a schematic diagram of an optical imaging lens according to a fifth embodiment of the present invention.

5B is a graph of spherical aberration, astigmatism and distortion of the optical imaging lens of the fifth embodiment in order from left to right.

FIG. 6A is a schematic diagram of an optical imaging lens according to a sixth embodiment of the present invention.

6B is a graph of spherical aberration, astigmatism and distortion of the optical imaging lens of the sixth embodiment in sequence from left to right.

FIG. 7A is a schematic diagram of an optical imaging lens according to a seventh embodiment of the present invention.

7B is a graph of spherical aberration, astigmatism and distortion of the optical imaging lens of the seventh embodiment in order from left to right.

FIG. 8A is a schematic diagram of an optical imaging lens according to an eighth embodiment of the present invention.

8B is a graph of spherical aberration, astigmatism and distortion of the optical imaging lens of the eighth embodiment from left to right.

Explanation of reference signs

100, 200, 300, 400, 500, 600, 700, 800: Aperture

110, 210, 310, 410, 510, 610, 710, 810: first lens

111, 211, 311, 411, 511, 611, 711, 811: object side surface

112, 212, 312, 412, 512, 612, 712, 812: image side surface

120, 220, 320, 420, 520, 620, 720, 820: second lens

121, 221, 321, 421, 521, 621, 721, 821: object side surface

122, 222, 322, 422, 522, 622, 722, 822: image side surface

130, 230, 330, 430, 530, 630, 730, 830: third lens

131, 231, 331, 431, 531, 631, 731, 831: object side surface

132, 232, 332, 432, 532, 632, 732, 832: image side surface

140, 240, 340, 440, 540, 640, 740, 840: fourth lens

141, 241, 341, 441, 541, 641, 741, 841: object side surface

142, 242, 342, 442, 542, 642, 742, 842: image side surface

150, 250, 350, 450, 550, 650, 750, 850: fifth lens

151, 251, 351, 451, 551, 651, 751, 851: object side surface

152, 252, 352, 452, 552, 652, 752, 852: image side surface

170, 270, 370, 470, 570, 670, 770, 870: infrared filter filter components

180, 280, 380, 480, 580, 680, 780, 880: imaging surface

190, 290, 390, 490, 590, 690, 790, 890: optical axis

f: focal length of optical imaging lens

Fno: the aperture value of the optical imaging lens

HFOV: half of the maximum field of view in an optical imaging lens

FOV: the largest field of view in an optical imaging lens

f1: focal length of the first lens

f2: focal length of the second lens

f3: focal length of the third lens

f4: focal length of the fourth lens

f5: focal length of the fifth lens

R3: radius of curvature of the object-side surface of the second lens

R4: Radius of curvature of the image side surface of the second lens

R9: radius of curvature of the object-side surface of the fifth lens

R10: Radius of curvature of the image-side surface of the fifth lens

V2: Dispersion coefficient of the second lens

CT2: The thickness of the second lens on the optical axis

CT3: The thickness of the third lens on the optical axis

CT4: The thickness of the fourth lens on the optical axis

TD: Distance on the optical axis from the object-side surface of the first lens to the image-side surface of the fifth lens

SD: Distance from the aperture to the image-side surface of the fifth lens on the optical axis

T23: the distance between the second lens and the third lens on the optical axis

T34: the distance between the third lens and the fourth lens on the optical axis

Detailed ways

<First embodiment>

Please refer to FIG. 1A and FIG. 1B, wherein FIG. 1A shows a schematic diagram of the optical imaging lens according to the first embodiment of the present invention, and FIG. 1B shows the spherical aberration and astigmatism of the optical imaging lens of the first embodiment in sequence from left to right and distorted graphs. As can be seen from FIG. 1A, the optical imaging lens includes an aperture 100 and an optical group, and the optical group includes a first lens 110, a second lens 120, a third lens 130, a fourth lens 140, and a first lens in sequence from the object side to the image side. Five lenses 150, an infrared filter assembly 170, and an imaging surface 180, wherein there are five lenses with refractive power in the optical imaging lens. The aperture 100 is disposed between the image-side surface 112 of the first lens 110 and the subject. There are five lenses with refractive power in the optical imaging lens.

The first lens 110 has positive refractive power and is made of plastic material. Its object-side surface 111 is convex near the optical axis 190, and its image-side surface 112 is concave near the optical axis 190. The object-side surface 111 and the image-side Surfaces 112 are all aspherical.

The second lens 120 has a negative refractive power and is made of plastic material. Its object side surface 121 near the optical axis 190 is convex, its image side surface 122 near the optical axis 190 is concave, and the object side surface 121 and the image side Surfaces 122 are all aspherical.

The third lens 130 has positive refractive power and is made of plastic material. Its object-side surface 131 is convex near the optical axis 190, and its image-side surface 132 is concave near the optical axis 190. The object-side surface 131 and the image-side Surfaces 132 are all aspherical.

The fourth lens 140 has a positive refractive power and is made of plastic material. Its object side surface 141 near the optical axis 190 is concave, its image side surface 142 near the optical axis 190 is convex, and the object side surface 141 and the image side Surfaces 142 are all aspherical.

The fifth lens 150 has a negative refractive power and is made of plastic material. Its object side surface 151 is concave near the optical axis 190, and its image side surface 152 is concave near the optical axis 190. The object side surface 151 and the image side Both the surfaces 152 are aspherical, and both the object-side surface 151 and the image-side surface 152 are provided with at least one inflection point.

The infrared filter element 170 is made of glass, and is disposed between the fifth lens 150 and the imaging surface 180 without affecting the focal length of the optical imaging lens.

The curve equations of the aspheric surfaces of the above-mentioned lenses are expressed as follows:

Wherein z is the position value with the surface vertex as reference at the position of height h along the optical axis 190 direction; c is the curvature of the lens surface close to the optical axis 190, and is the reciprocal (c=1/R) of the radius of curvature (R) , R is the radius of curvature of the lens surface close to the optical axis 190, h is the vertical distance of the lens surface from the optical axis 190, k is the conic coefficient (conic constant), and A4, A6, A8, A10, A12, A14 are respectively four, Aspheric coefficients of 6th, 8th, 10th, 12th, and 14th order.

In the optical imaging lens of the first embodiment, the focal length of the optical imaging lens is f, the aperture value (f-number) of the optical imaging lens is Fno, and half of the maximum field of view in the optical imaging lens is HFOV, and its numerical value is as follows: f = 3.66 (mm); Fno = 2.1; and HFOV = 38.2 (degrees).

In the optical imaging lens of the first embodiment, the focal length of the first lens 110 is f1, the focal length of the second lens 120 is f2, the focal length of the third lens 130 is f3, and the focal length of the fourth lens 140 is f4, The focal length of the fifth lens 150 is f5, and satisfies the following conditions: |f5|<|fn|, wherein n=1, 2, 3 and 4; |f5|<|f4|<|fn|, wherein n=1 , 2 and 3.

In the optical imaging lens of the first embodiment, the overall focal length of the optical imaging lens is f, the focal length of the fifth lens 150 is f5, and the following condition is satisfied: f5/f=-0.36.

In the optical imaging lens of the first embodiment, the radius of curvature of the object-side surface 151 of the fifth lens 150 is R9, the radius of curvature of the image-side surface 152 of the fifth lens 150 is R10, and the following conditions are satisfied: (R9+R10) /(R9-R10)=0.16.

In the optical imaging lens of the first embodiment, the overall focal length of the optical imaging lens is f, the focal length of the first lens 110 is f1, and the following condition is satisfied: f1/f=0.77.

In the optical imaging lens of the first embodiment, the overall focal length of the optical imaging lens is f, the focal length of the second lens 120 is f2, and the following condition is satisfied: f2/f=-1.34.

In the optical imaging lens of the first embodiment, the object-side surface 121 of the second lens 120 has a radius of curvature of R3, and the image-side surface 122 of the second lens 120 has a radius of curvature of R4, and satisfies the following conditions: (R3-R4) /(R3+R4)=0.62.

In the optical imaging lens of the first embodiment, the distance from the aperture 100 to the image-side surface 152 of the fifth lens 150 on the optical axis 190 is SD, and the distance from the object-side surface 111 of the first lens 110 to the fifth lens 150 is SD. The distance from the image-side surface 152 on the optical axis 190 is TD, and the following condition is satisfied: SD/TD=0.92.

In the optical imaging lens of the first embodiment, the thickness of the second lens 120 on the optical axis 190 is CT2, the thickness of the third lens 130 on the optical axis 190 is CT3, and the following conditions are satisfied: CT3/CT2=2.62 .

In the optical imaging lens of the first embodiment, the overall focal length of the optical imaging lens is f, the focal length of the third lens 130 is f3, and the following condition is satisfied: f3/f=7.00.

In the optical imaging lens of the first embodiment, the overall focal length of the optical imaging lens is f, the focal length of the fourth lens 140 is f4, and the following condition is satisfied: f4/f=0.42.

In the optical imaging lens of the first embodiment, the distance between the second lens 120 and the third lens 130 on the optical axis 190 is T23, and the distance between the third lens 130 and the fourth lens 140 on the optical axis 190 is T23. T34, and satisfy the following condition: T23/T34=0.77.

In the optical imaging lens of the first embodiment, the maximum field of view of the optical imaging lens is FOV, and the following condition is satisfied: FOV=76.42.

In the optical imaging lens of the first embodiment, the thickness of the third lens 130 on the optical axis 190 is CT3, the thickness of the fourth lens 140 on the optical axis 190 is CT4, and the following conditions are satisfied: CT4/CT3=1.11 .

In the optical imaging lens of the first embodiment, the dispersion coefficient of the first lens 110 is V1, the dispersion coefficient of the second lens 120 is V2, the dispersion coefficient of the third lens 130 is V3, and the dispersion coefficient of the fourth lens 140 The coefficient is V4, the dispersion coefficient of the fifth lens 150 is V5, and satisfies the following condition: V2-Vn=-33.90, where n=1, 3, 4 and 5.

Then refer to Table 1 and Table 2 below.

Table 1 is the detailed structural data of the first embodiment in FIG. 1A , where the units of the radius of curvature, thickness and focal length are mm, and surfaces 0-14 represent surfaces from the object side to the image side in sequence. Table 2 is the aspheric surface data in the first embodiment, wherein k represents the cone coefficient in the aspheric curve equation, and A4-A14 represent the 4th-14th order aspheric coefficients of each surface. In addition, the tables of the following embodiments are schematic diagrams and aberration curves corresponding to the respective embodiments, and the definitions of the data in the tables are the same as those in Table 1 and Table 2 of the first embodiment, and will not be repeated here.

<Second Embodiment>

Please refer to FIG. 2A and FIG. 2B, wherein FIG. 2A shows a schematic diagram of the optical imaging lens according to the second embodiment of the present invention, and FIG. 2B shows the spherical aberration and astigmatism of the optical imaging lens of the second embodiment in sequence from left to right and distorted graphs. As can be seen from FIG. 2A, the optical imaging lens includes a diaphragm 200 and an optical group, and the optical group includes a first lens 210, a second lens 220, a third lens 230, a fourth lens 240, and a first lens from the object side to the image side in sequence. Five lenses 250, an infrared filter assembly 270, and an imaging surface 280, wherein there are five lenses with refractive power in the optical imaging lens. The aperture 200 is disposed between the image-side surface 212 of the first lens 210 and the subject. There are five lenses with refractive power in the optical imaging lens.

The first lens 210 has positive refractive power and is made of plastic material. Its object-side surface 211 is convex near the optical axis 290, and its image-side surface 212 is convex near the optical axis 290. The object-side surface 211 and the image-side Surfaces 212 are all aspherical.

The second lens 220 has negative refractive power and is made of plastic material. Its object-side surface 221 near the optical axis 290 is convex, and its image-side surface 222 near the optical axis 290 is concave. The object-side surface 221 and the image-side Surfaces 222 are all aspherical.

The third lens 230 has positive refractive power and is made of plastic material. Its object-side surface 231 near the optical axis 290 is convex, and its image-side surface 232 near the optical axis 290 is concave. The object-side surface 231 and the image-side Surfaces 232 are all aspherical.

The fourth lens 240 has a positive refractive power and is made of plastic material. Its object-side surface 241 near the optical axis 290 is concave, and its image-side surface 242 near the optical axis 290 is convex. The object-side surface 241 and the image-side Surfaces 242 are all aspherical.

The fifth lens 250 has negative refractive power and is made of plastic material. Its object side surface 251 is concave near the optical axis 290, and its image side surface 252 is concave near the optical axis 290. The object side surface 251 and the image side The surfaces 252 are both aspherical, and both the object-side surface 251 and the image-side surface 252 are provided with at least one inflection point.

The infrared filter element 270 is made of glass, and is disposed between the fifth lens 250 and the imaging surface 280 without affecting the focal length of the optical imaging lens.

Then refer to Table 3 and Table 4 below.

In the second embodiment, the curve equation of the aspheric surface is expressed in the form of the first embodiment. In addition, the definitions of the parameters in the table below are the same as those in the first embodiment, and will not be repeated here.

Cooperating with Table 3 and Table 4, the following data can be deduced:

<Third embodiment>

Please refer to FIG. 3A and FIG. 3B, wherein FIG. 3A shows a schematic diagram of the optical imaging lens according to the third embodiment of the present invention, and FIG. 3B shows the spherical aberration and astigmatism of the optical imaging lens of the third embodiment in sequence from left to right and distorted graphs. As can be seen from FIG. 3A, the optical imaging lens includes a diaphragm 300 and an optical group, and the optical group includes a first lens 310, a second lens 320, a third lens 330, a fourth lens 340, and a first lens in sequence from the object side to the image side. Five lenses 350, an infrared filter assembly 370, and an imaging surface 380, wherein there are five lenses with refractive power in the optical imaging lens. The aperture 300 is disposed between the image-side surface 312 of the first lens 310 and the subject. There are five lenses with refractive power in the optical imaging lens.

The first lens 310 has a positive refractive power and is made of plastic material. Its object side surface 311 near the optical axis 390 is convex, its image side surface 312 near the optical axis 390 is concave, and the object side surface 311 and the image side Surfaces 312 are all aspherical.

The second lens 320 has negative refractive power and is made of plastic material. Its object-side surface 321 near the optical axis 390 is convex, and its image-side surface 322 near the optical axis 390 is concave. The object-side surface 321 and the image-side Surfaces 322 are all aspherical.

The third lens 330 has positive refractive power and is made of plastic material. Its object-side surface 331 is convex near the optical axis 390, and its image-side surface 332 is concave near the optical axis 390. The object-side surface 331 and the image-side Surfaces 332 are all aspherical.

The fourth lens 340 has positive refractive power and is made of plastic material. Its object-side surface 341 near the optical axis 390 is concave, and its image-side surface 342 near the optical axis 390 is convex. The object-side surface 341 and the image-side Surfaces 342 are all aspherical.

The fifth lens 350 has negative refractive power and is made of plastic material. Its object side surface 351 is concave near the optical axis 390, and its image side surface 352 is concave near the optical axis 390. The object side surface 351 and the image side Both the surfaces 352 are aspheric, and both the object-side surface 351 and the image-side surface 352 are provided with at least one inflection point.

The infrared filter element 370 is made of glass, and is disposed between the fifth lens 350 and the imaging surface 380 without affecting the focal length of the optical imaging lens.

Then refer to Table 5 and Table 6 below.

In the third embodiment, the curve equation of the aspheric surface is expressed in the form of the first embodiment. In addition, the definitions of the parameters in the table below are the same as those in the first embodiment, and will not be repeated here.

Cooperating with Table 5 and Table 6, the following data can be deduced:

<Fourth Embodiment>

Please refer to FIG. 4A and FIG. 4B, wherein FIG. 4A shows a schematic diagram of an optical imaging lens according to a fourth embodiment of the present invention, and FIG. 4B shows the spherical aberration and astigmatism of the optical imaging lens of the fourth embodiment in sequence from left to right and distorted graphs. As can be seen from FIG. 4A, the optical imaging lens includes a diaphragm 400 and an optical group, and the optical group includes a first lens 410, a second lens 420, a third lens 430, a fourth lens 440, and a first lens in sequence from the object side to the image side. Five lenses 450, an infrared filter assembly 470, and an imaging surface 480, wherein there are five lenses with refractive power in the optical imaging lens. The aperture 400 is disposed between the image-side surface 412 of the first lens 410 and the subject. There are five lenses with refractive power in the optical imaging lens.

The first lens 410 has positive refractive power and is made of plastic material. Its object-side surface 411 is convex near the optical axis 490, and its image-side surface 412 is concave near the optical axis 490. The object-side surface 411 and the image-side Surfaces 412 are all aspherical.

The second lens 420 has negative refractive power and is made of plastic material. Its object-side surface 421 near the optical axis 490 is convex, and its image-side surface 422 near the optical axis 490 is concave. The object-side surface 421 and the image-side Surfaces 422 are all aspherical.

The third lens 430 has positive refractive power and is made of plastic material. Its object-side surface 431 is convex near the optical axis 490, and its image-side surface 432 is concave near the optical axis 490. The object-side surface 431 and the image-side Surfaces 432 are all aspherical.

The fourth lens 440 has a positive refractive power and is made of plastic material. Its object-side surface 441 near the optical axis 490 is concave, and its image-side surface 442 near the optical axis 490 is convex. The object-side surface 441 and the image-side Surfaces 442 are all aspherical.

The fifth lens 450 has negative refractive power and is made of plastic material. Its object side surface 451 is concave near the optical axis 490, and its image side surface 452 is concave near the optical axis 490. The object side surface 451 and the image side The surfaces 452 are both aspherical, and both the object-side surface 451 and the image-side surface 452 are provided with at least one inflection point.

The infrared filter element 470 is made of glass, and is disposed between the fifth lens 450 and the imaging surface 480 without affecting the focal length of the optical imaging lens.

Then refer to Table 7 and Table 8 below.

In the fourth embodiment, the curve equation of the aspheric surface is expressed in the form of the first embodiment. In addition, the definitions of the parameters in the table below are the same as those in the first embodiment, and will not be repeated here.

Cooperating with Table 7 and Table 8, the following data can be deduced:

<Fifth Embodiment>

Please refer to FIG. 5A and FIG. 5B, wherein FIG. 5A shows a schematic diagram of the optical imaging lens according to the fifth embodiment of the present invention, and FIG. 5B shows the spherical aberration and astigmatism of the optical imaging lens of the fifth embodiment in sequence from left to right and distorted graphs. It can be seen from FIG. 5A that the optical imaging lens includes a diaphragm 500 and an optical group, and the optical group includes a first lens 510, a second lens 520, a third lens 530, a fourth lens 540, and a first lens in sequence from the object side to the image side. Five lenses 550, an infrared filter assembly 570, and an imaging surface 580, wherein there are five lenses with refractive power in the optical imaging lens. The aperture 500 is disposed between the image-side surface 512 of the first lens 510 and the subject. There are five lenses with refractive power in the optical imaging lens.

The first lens 510 has a positive refractive power and is made of plastic material. Its object side surface 511 near the optical axis 590 is convex, its image side surface 512 near the optical axis 590 is concave, and the object side surface 511 and the image side Surfaces 512 are all aspherical.

The second lens 520 has a negative refractive power and is made of plastic material. Its object-side surface 521 near the optical axis 590 is convex, and its image-side surface 522 near the optical axis 590 is concave. The object-side surface 521 and the image-side The surfaces 522 are all aspherical.

The third lens 530 has a positive refractive power and is made of plastic material. Its object-side surface 531 near the optical axis 590 is convex, and its image-side surface 532 near the optical axis 590 is concave. The object-side surface 531 and the image-side Surfaces 532 are all aspherical.

The fourth lens 540 has a positive refractive power and is made of plastic material. Its object-side surface 541 near the optical axis 590 is concave, and its image-side surface 542 near the optical axis 590 is convex. The object-side surface 541 and the image-side Surfaces 542 are all aspherical.

The fifth lens 550 has negative refractive power and is made of plastic material. Its object side surface 551 is concave near the optical axis 590, and its image side surface 552 is concave near the optical axis 590. The object side surface 551 and the image side Both the surfaces 552 are aspherical, and both the object-side surface 551 and the image-side surface 552 are provided with at least one inflection point.

The infrared filter element 570 is made of glass, and is disposed between the fifth lens 550 and the imaging surface 580 without affecting the focal length of the optical imaging lens.

Then refer to Table 9 and Table 10 below.

In the fifth embodiment, the curve equation of the aspheric surface is expressed in the form of the first embodiment. In addition, the definitions of the parameters in the table below are the same as those in the first embodiment, and will not be repeated here.

Cooperating with Table 9 and Table 10, the following data can be deduced:

<Sixth Embodiment>

Please refer to FIG. 6A and FIG. 6B, wherein FIG. 6A shows a schematic diagram of the optical imaging lens according to the sixth embodiment of the present invention, and FIG. 6B shows the spherical aberration and astigmatism of the optical imaging lens of the sixth embodiment in sequence from left to right and distorted graphs. It can be seen from FIG. 6A that the optical imaging lens includes a diaphragm 600 and an optical group, and the optical group includes a first lens 610, a second lens 620, a third lens 630, a fourth lens 640, and a first lens in sequence from the object side to the image side. Five lenses 650, an infrared filter assembly 670, and an imaging surface 680, wherein there are five lenses with refractive power in the optical imaging lens. The aperture 600 is disposed between the image-side surface 612 of the first lens 610 and the subject. There are five lenses with refractive power in the optical imaging lens.

The first lens 610 has a positive refractive power and is made of plastic material. Its object-side surface 611 near the optical axis 690 is convex, its image-side surface 612 near the optical axis 690 is concave, and the object-side surface 611 and the image-side Surfaces 612 are all aspherical.

The second lens 620 has a negative refractive power and is made of plastic material. Its object-side surface 621 near the optical axis 690 is convex, and its image-side surface 622 near the optical axis 690 is concave. The object-side surface 621 and the image-side Surfaces 622 are all aspherical.

The third lens 630 has positive refractive power and is made of plastic material. Its object-side surface 631 near the optical axis 690 is convex, and its image-side surface 632 near the optical axis 690 is concave. The object-side surface 631 and the image-side Surfaces 632 are all aspherical.

The fourth lens 640 has a positive refractive power and is made of plastic material. Its object-side surface 641 near the optical axis 690 is concave, and its image-side surface 642 near the optical axis 690 is convex. The object-side surface 641 and the image-side Surfaces 642 are all aspherical.

The fifth lens 650 has negative refractive power and is made of plastic material. Its object-side surface 651 near the optical axis 690 is concave, and its image-side surface 652 near the optical axis 690 is concave. The object-side surface 651 and the image-side The surfaces 652 are both aspherical, and both the object-side surface 651 and the image-side surface 652 are provided with at least one inflection point.

The infrared filter element 670 is made of glass, which is disposed between the fifth lens 650 and the imaging surface 680 and does not affect the focal length of the optical imaging lens.

Then refer to Table 11 and Table 12 below.

In the sixth embodiment, the curve equation of the aspheric surface is expressed in the form of the first embodiment. In addition, the definitions of the parameters in the table below are the same as those in the first embodiment, and will not be repeated here.

Cooperating with Table 11 and Table 12, the following data can be deduced:

<Seventh Embodiment>

Please refer to FIG. 7A and FIG. 7B, wherein FIG. 7A shows a schematic diagram of the optical imaging lens according to the seventh embodiment of the present invention, and FIG. 7B shows the spherical aberration and astigmatism of the optical imaging lens of the seventh embodiment in sequence from left to right and distorted graphs. It can be seen from FIG. 7A that the optical imaging lens includes a diaphragm 700 and an optical group, and the optical group includes a first lens 710, a second lens 720, a third lens 730, a fourth lens 740, and a first lens in sequence from the object side to the image side. Five lenses 750, an infrared filter assembly 770, and an imaging surface 780, wherein there are five lenses with refractive power in the optical imaging lens. The aperture 700 is disposed between the image-side surface 712 of the first lens 710 and the subject. There are five lenses with refractive power in the optical imaging lens.

The first lens 710 has a positive refractive power and is made of plastic material. Its object side surface 711 near the optical axis 790 is convex, its image side surface 712 near the optical axis 790 is concave, and the object side surface 711 and the image side Surfaces 712 are all aspherical.

The second lens 720 has negative refractive power and is made of plastic material. Its object-side surface 721 is convex near the optical axis 790, and its image-side surface 722 is concave near the optical axis 790. The object-side surface 721 and the image-side Surfaces 722 are both aspherical.

The third lens 730 has positive refractive power and is made of plastic material. Its object-side surface 731 near the optical axis 790 is convex, and its image-side surface 732 near the optical axis 790 is concave. The object-side surface 731 and the image-side Surfaces 732 are both aspherical.

The fourth lens 740 has a positive refractive power and is made of plastic material. Its object-side surface 741 near the optical axis 790 is concave, and its image-side surface 742 near the optical axis 790 is convex. The object-side surface 741 and the image-side Surfaces 742 are all aspherical.

The fifth lens 750 has negative refractive power and is made of plastic material. Its object-side surface 751 is concave near the optical axis 790, and its image-side surface 752 is concave near the optical axis 790. The object-side surface 751 and the image-side Both the surfaces 752 are aspheric, and both the object-side surface 751 and the image-side surface 752 are provided with at least one inflection point.

The infrared filter element 770 is made of glass, which is disposed between the fifth lens 750 and the imaging surface 780 and does not affect the focal length of the optical imaging lens.

Then refer to the following Table 13 and Table 14.

In the seventh embodiment, the curve equation of the aspheric surface is expressed in the form of the first embodiment. In addition, the definitions of the parameters in the table below are the same as those in the first embodiment, and will not be repeated here.

Cooperating with Table 13 and Table 14, the following data can be deduced:

<Eighth embodiment>

Please refer to FIG. 8A and FIG. 8B, wherein FIG. 8A shows a schematic diagram of the optical imaging lens according to the eighth embodiment of the present invention, and FIG. 8B shows the spherical aberration and astigmatism of the optical imaging lens of the eighth embodiment from left to right. and distorted graphs. It can be seen from FIG. 8A that the optical imaging lens includes an aperture 800 and an optical group, and the optical group includes a first lens 810, a second lens 820, a third lens 830, a fourth lens 840, and a first lens in sequence from the object side to the image side. Five lenses 850, an infrared filter assembly 870, and an imaging surface 880, wherein there are five lenses with refractive power in the optical imaging lens. The aperture 800 is disposed between the image-side surface 812 of the first lens 810 and the subject. There are five lenses with refractive power in the optical imaging lens.

The first lens 810 has positive refractive power and is made of plastic material. Its object-side surface 811 near the optical axis 890 is convex, and its image-side surface 812 near the optical axis 890 is concave. The object-side surface 811 and the image-side Surfaces 812 are all aspherical.

The second lens 820 has a negative refractive power and is made of plastic material. Its object-side surface 821 near the optical axis 890 is convex, its image-side surface 822 near the optical axis 890 is concave, and the object-side surface 821 and the image-side Surfaces 822 are all aspherical.

The third lens 830 has positive refractive power and is made of plastic material. Its object-side surface 831 near the optical axis 890 is convex, and its image-side surface 832 near the optical axis 890 is convex. The object-side surface 831 and the image-side Surfaces 832 are all aspherical.

The fourth lens 840 has a positive refractive power and is made of plastic material. Its object-side surface 841 near the optical axis 890 is concave, and its image-side surface 842 near the optical axis 890 is convex. The object-side surface 841 and the image-side Surfaces 842 are all aspherical.

The fifth lens 850 has negative refractive power and is made of plastic material. Its object-side surface 851 is concave near the optical axis 890, and its image-side surface 852 is concave near the optical axis 890. The object-side surface 851 and the image-side The surfaces 852 are both aspherical, and both the object-side surface 851 and the image-side surface 852 are provided with at least one inflection point.

The infrared filter element 870 is made of glass, and is disposed between the fifth lens 850 and the imaging surface 880 without affecting the focal length of the optical imaging lens.

Then refer to Table 15 and Table 16 below.

In the eighth embodiment, the curve equation of the aspheric surface is expressed in the form of the first embodiment. In addition, the definitions of the parameters in the table below are the same as those in the first embodiment, and will not be repeated here.

Cooperating with Table 15 and Table 16, the following data can be deduced:

In the optical imaging lens provided by the present invention, the material of the lens can be plastic or glass. When the material of the lens is plastic, the production cost can be effectively reduced, and when the material of the lens is glass, the degree of freedom in the configuration of the refractive power of the optical imaging lens can be increased. In addition, the object-side surface and the image-side surface of the lens in the optical imaging lens can be aspherical, and the aspheric surface can be easily made into a shape other than spherical, so as to obtain more control variables to reduce aberrations, thereby reducing the number of lenses used , so the total length of the optical imaging lens of the present invention can be effectively reduced.

In the optical imaging lens provided by the present invention, as far as the lens with refractive power is concerned, if the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at the near optical axis; if the lens surface is If it is a concave surface and the position of the concave surface is not defined, it means that the lens surface is concave at the near optical axis.

The optical imaging lens provided by the present invention can be applied to the optical system of moving focus according to the requirements, and has the characteristics of excellent aberration correction and good imaging quality, and can be used in 3D (three-dimensional) image capture, digital cameras, In electronic imaging systems such as mobile devices, digital graphics tablets, or car photography.

In summary, the above-mentioned embodiments and drawings are only preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, that is, all equivalent changes and modifications made according to the patent scope of the present invention are all It should belong to the scope covered by the patent of the present invention.

Claims (18)

1. a kind of optical imaging lens include an aperture and an optics group, it is characterised in that：The optics group is by object side to picture Side includes sequentially：

One first lens have positive refracting power, and are plastic material, are convex surface, image side surface at the dipped beam axis of object side surface It is concave surface at dipped beam axis, object side surface and image side surface are all aspherical；

One second lens have negative refracting power, and are plastic material, are convex surface, image side surface at the dipped beam axis of object side surface It is concave surface at dipped beam axis, object side surface and image side surface are all aspherical；

One the third lens have positive refracting power, and are plastic material, are convex surface, image side surface at the dipped beam axis of object side surface It is concave surface at dipped beam axis, object side surface and image side surface are all aspherical；

One the 4th lens have positive refracting power, and are plastic material, are concave surface, image side surface at the dipped beam axis of object side surface It is convex surface at dipped beam axis, object side surface and image side surface are all aspherical；

One the 5th lens have negative refracting power, and are plastic material, are concave surface, image side surface at the dipped beam axis of object side surface Be concave surface at dipped beam axis, object side surface and image side surface be all it is aspherical, and object side surface and image side surface be all provided with to Few point of inflexion；

The aperture is located between the image side surface of first lens and an object；

The lens for having refracting power wherein in the optical imaging lens are five, and the whole focal lengths of the optical imaging lens is f, this The focal length of one lens is f1, and the focal length of second lens is f2, and the focal length of the third lens is f3, and the focal length of the 4th lens is The focal length of f4, the 5th lens are f5, and the object side surface radius of curvature of the 5th lens is R9, the image side surface of the 5th lens Radius of curvature is R10, and meets following condition：

| f5|<| fn|, wherein n=1,2,3 and 4；

-0.32≦ f5/f < -0.2；

0 < (R9+R10) / (R9-R10) < 0.5。

2. optical imaging lens as described in claim 1, it is characterised in that：The whole focal length of the optical imaging lens is f, The focal length of first lens is f1, and meets following condition：

0.7<f1/f<0.81。

3. optical imaging lens as described in claim 1, it is characterised in that：The whole focal length of the optical imaging lens is f, The focal length of second lens is f2, and meets following condition：

-1.5 < f2/f < -1。

4. optical imaging lens as claimed in claim 3, it is characterised in that：The object side surface radius of curvature of second lens Image side surface curvature radius for R3, second lens is R4, and meets following condition：

0.5< (R3-R4)/(R3+R4) < 0.85。

5. optical imaging lens as described in claim 1, it is characterised in that：The aperture to the image side surface of the 5th lens in Distance on optical axis is SD, and the image side surface of object side surface to the 5th lens of first lens is in the distance on optical axis TD, and meet following condition：

0.89 < SD/TD < 1.05。

6. optical imaging lens as claimed in claim 5, it is characterised in that：Second lens are in the thickness on optical axis CT2, which is CT3 in the thickness on optical axis, and meets following condition：

2<CT3/CT2<3.5。

7. optical imaging lens as claimed in claim 5, it is characterised in that：The whole focal length of the optical imaging lens is f, The focal length of the third lens is f3, and meets following condition：

4.5 <f3/f<12。

8. optical imaging lens as described in claim 1, it is characterised in that：The whole focal length of the optical imaging lens is f, The focal length of 4th lens is f4, and meets following condition：

0.25 < f4/f<0.6。

9. optical imaging lens as claimed in claim 5, it is characterised in that：Second lens are with the third lens on optical axis Spacing distance be T23, the third lens and the 4th lens are T34 in the spacing distance on optical axis, and meet following condition：

0.6<T23/T34≦1。

10. optical imaging lens as claimed in claim 5, it is characterised in that：The abbe number of first lens is V1, should The abbe number of second lens is V2, and the abbe numbers of the third lens is V3, and the abbe number of the 4th lens is V4, this The abbe number of five lens is V5, and meets following condition：

-40 < V2-Vn <- 25, wherein n=1,3,4 and 5.

11. a kind of optical imaging lens include an aperture and an optics group, it is characterised in that：The optics group by object side extremely Image side includes sequentially：

One first lens, have positive refracting power, are convex surface at the dipped beam axis of object side surface, are recessed at the dipped beam axis of image side surface Face, object side surface and image side surface are all aspherical；

One second lens have negative refracting power, and are plastic material, are convex surface, image side surface at the dipped beam axis of object side surface It is concave surface at dipped beam axis, object side surface and image side surface are all aspherical；

One the third lens have positive refracting power, and are plastic material, are convex surface, image side surface at the dipped beam axis of object side surface It is concave surface at dipped beam axis, object side surface and image side surface are all aspherical；

One the 4th lens have positive refracting power, and are plastic material, are concave surface, image side surface at the dipped beam axis of object side surface It is convex surface at dipped beam axis, object side surface and image side surface are all aspherical；

One the 5th lens have negative refracting power, and are plastic material, are concave surface, image side surface at the dipped beam axis of object side surface Be concave surface at dipped beam axis, object side surface and image side surface be all it is aspherical, and object side surface and image side surface be all provided with to Few point of inflexion；

The aperture is located between the image side surface of first lens and an object；

The lens for having refracting power wherein in the optical imaging lens are five, and the whole focal lengths of the optical imaging lens is f, this The focal length of one lens is f1, and the focal length of second lens is f2, and the focal length of the third lens is f3, and the focal length of the 4th lens is The focal length of f4, the 5th lens are f5, and the object side surface radius of curvature of second lens is R3, the image side surface of second lens Radius of curvature is R4, and meets following condition：

| f5|<| f4|<| fn|, wherein n=1,2 and 3；

-0.32≦ f5/f < -0.2；

0.5<(R3-R4)/(R3+R4)<0.85。

12. optical imaging lens as claimed in claim 11, it is characterised in that：The whole focal length of the optical imaging lens is The focal length of f, first lens are f1, and meet following condition：

0.7<f1/f<0.81。

13. optical imaging lens as claimed in claim 11, it is characterised in that：The aperture is to the image side surface of the 5th lens It is SD in the distance on optical axis, the image side surface of object side surface to the 5th lens of first lens is in the distance on optical axis TD, and meet following condition：

0.89 < SD/TD < 1.05。

14. optical imaging lens as claimed in claim 13, it is characterised in that：The third lens are in the thickness on optical axis CT3, the 4th lens are CT4 in the thickness on optical axis, and meet following condition：

1<CT4/CT3<1.4。

15. optical imaging lens as claimed in claim 14, it is characterised in that：The abbe number of first lens is V1, The abbe number of second lens is V2, and the abbe number of the third lens is V3, and the abbe number of the 4th lens is V4, should The abbe number of 5th lens is V5, and meets following condition：

-40 < V2-Vn <- 25, wherein n=1,3,4 and 5.

16. the object side surface radius of curvature of optical imaging lens as claimed in claim 11, wherein the 5th lens is R9, should The image side surface curvature radius of 5th lens is R10, and meets following condition：

0<(R9+R10)/(R9-R10)<0.5。

17. optical imaging lens as claimed in claim 13, it is characterised in that：The whole focal length of the optical imaging lens is The focal length of f, the 4th lens are f4, and meet following condition：

0.25 < f4/f<0.6。

18. optical imaging lens as claimed in claim 17, it is characterised in that：The maximum field of view angle of the optical imaging lens For FOV, and meet following condition：

72<FOV<84。