CN109856786B

CN109856786B - Image capturing lens assembly and image capturing device

Info

Publication number: CN109856786B
Application number: CN201910034001.0A
Authority: CN
Inventors: 廖凌峣; 黄歆璇
Original assignee: Largan Precision Co Ltd
Current assignee: Largan Precision Co Ltd
Priority date: 2015-02-17
Filing date: 2015-02-17
Publication date: 2021-05-04
Anticipated expiration: 2035-02-17
Also published as: CN105988198A; CN109856786A; CN105988198B; CN109683281A; CN109683281B

Abstract

The invention discloses an image capturing lens assembly and an image capturing device. The image capturing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface, the third lens element with positive refractive power has a negative refractive power, the fourth lens element with negative refractive power has a concave image-side surface, the fifth lens element with a concave image-side surface, and both the object-side surface and the image-side surface of the fifth lens element are aspheric. When the specific conditions are satisfied, the volume of the image capturing lens assembly can be effectively controlled, so that the carrying convenience is improved. The invention also discloses an image capturing device with the image capturing lens group.

Description

Image capturing lens assembly and image capturing device

The present application is a divisional application of patent applications filed on 2015, 17.02/2015, under application number 201510085564.4, entitled "image capturing lens assembly, image capturing device and electronic device".

Technical Field

The present invention relates to an image capturing lens assembly and an image capturing device, and more particularly to a miniaturized image capturing lens assembly and an image capturing device applied to an electronic device.

Background

In recent years, with the rise of electronic products having a photographing function, the demand for optical systems has been increasing. The photosensitive elements of a general optical system are not limited to a Charge Coupled Device (CCD) or a Complementary Metal-Oxide Semiconductor (CMOS) Sensor, and with the refinement of Semiconductor process technology, the pixel size of the photosensitive elements is reduced, and the optical system gradually develops into a high pixel field, so that the requirements for imaging quality are increased.

The conventional optical system mounted on an electronic product mainly adopts a four-piece or five-piece lens structure, but due to the prevalence of high-specification mobile devices such as Smart phones (Smart phones) and Tablet PCs (Tablet PCs), the pixel and imaging quality of the optical system is rapidly increased, and the known optical system cannot meet the requirement of a higher-order photographing system.

Taking a five-piece optical system for long-range photography (Telephoto) as an example, a spherical glass lens is often used, however, this configuration not only results in a large lens volume and is not easy to carry, but also results in a high unit price and a consumer's frustration, so the conventional optical system cannot meet the demand of the general consumer on convenience and versatility.

Disclosure of Invention

The invention provides an image capturing lens assembly and an image capturing device, wherein a first lens element of the image capturing lens assembly has positive refractive power and can concentrate the light converging capability of the whole image capturing lens assembly on the object side end of the image capturing lens assembly, so that the volume of the image capturing lens assembly can be effectively controlled, and the carrying convenience is improved. In addition, the fourth lens element of the optical lens assembly for image capture has negative refractive power, so that a Principal Point (Principal Point) of the optical lens assembly for image capture can be kept away from the image side of the optical lens assembly for image capture, thereby effectively controlling the back focal length of the optical lens assembly for image capture, and facilitating to maintain miniaturization.

The present invention provides an image capturing lens assembly, which comprises, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface, the second lens element with positive refractive power has a convex image-side surface, the third lens element with positive refractive power has a concave image-side surface, the fourth lens element with negative refractive power has a convex object-side surface, the third lens element with positive refractive power has a concave image-side surface, the fourth lens element with negative refractive power has a concave image-side surface, the fifth lens element with negative refractive power has a concave image-side surface, and the fifth lens element with positive refractive power has a concave object-side surface and a concave image-side surface. The total number of the lenses of the image capturing lens group is five. At least one of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element includes at least one inflection point. The image capturing lens assembly has a focal length f, the first lens element has a focal length f1, the fourth lens element has a focal length f4, the first lens element has an object-side surface with a radius of curvature R1, the first lens element has an image-side surface with a radius of curvature R2, the first lens element has an axial thickness CT1, and an axial distance TL from the object-side surface to the image plane is defined as TL, wherein the following conditions are satisfied:

3.4<(f/R1)-(f/R2)+((f×CT1)/(R1×R2))<7.5；

-1.0<f1/f4<0；

3.4< f/R1; and

0.75<TL/f<1.0。

the present invention further provides an image capturing device, comprising the image capturing lens assembly and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an image plane of the image capturing lens assembly.

The present invention further provides an image capturing lens assembly, which includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface, the second lens element with refractive power has positive refractive power, the third lens element with positive refractive power has a convex image-side surface, both the object-side surface and the image-side surface of the third lens element are aspheric, the fourth lens element with negative refractive power has a concave image-side surface, both the object-side surface and the image-side surface of the fourth lens element are aspheric, the fifth lens element with negative refractive power has a concave image-side surface, both the object-side surface and the image-side surface of the fifth lens element are aspheric. The total number of the lenses of the image capturing lens group is five. At least one of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element includes at least one inflection point. The image capturing lens assembly has a focal length f, the first lens element has a focal length f1, the fourth lens element has a focal length f4, the first lens element has an object-side surface with a radius of curvature R1, the first lens element has an image-side surface with a radius of curvature R2, the first lens element has an axial thickness CT1, and an axial distance TL from the object-side surface to the image plane is defined as TL, wherein the following conditions are satisfied:

3.4<(f/R1)-(f/R2)+((f×CT1)/(R1×R2))<7.5；

-1.0<f1/f4<0；

3.4< f/R1; and

0.75<TL/f<1.0。

The present invention further provides an image capturing lens assembly, which includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface, the second lens element with refractive power has refractive power, the third lens element with positive refractive power has an aspheric object-side surface and an aspheric image-side surface, the fourth lens element with negative refractive power has a concave image-side surface, the fourth lens element with positive refractive power has an aspheric object-side surface and an aspheric image-side surface, the fifth lens element with negative refractive power has a concave image-side surface, and the fifth lens element with positive refractive power has an aspheric object-side surface and an aspheric image-side surface. The total number of the lenses of the image capturing lens group is five. At least one of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element includes at least one inflection point. The image capturing lens assembly has a focal length f, the first lens element has a focal length f1, the fourth lens element has a focal length f4, the first lens element has an object-side surface with a radius of curvature R1, the first lens element has an image-side surface with a radius of curvature R2, the first lens element has an axial thickness CT1, and an axial distance TL from the object-side surface to the image plane is defined as TL, wherein the following conditions are satisfied:

3.4<(f/R1)-(f/R2)+((f×CT1)/(R1×R2))<7.5；

-0.22≤f1/f4<0；

3.4< f/R1; and

0.75<TL/f<1.0。

when the conditions (f/R1) - (f/R2) + ((f × CT1)/(R1 × R2)) are satisfied, the relationship between the surface shape and thickness of the entire image capturing lens assembly and the first lens element can be balanced, so that the first lens element can exert the maximum effect, and the photographing range can be controlled, thereby achieving the best quality of long-range photographing.

When f1/f4 satisfies the above conditions, the light deflection degree of the side end of the image capturing lens assembly can be enhanced, and the lens magnification can be increased in a limited space, so that more light can be received in the same image range.

When the f/R1 satisfies the above condition, the shooting range can be effectively controlled, and the imaging quality of the local image has higher resolution.

When TL/f satisfies the above condition, the spatial configuration of the lens can be effectively controlled, and the ability of long-range shooting is improved.

Drawings

Fig. 1 is a schematic view illustrating an image capturing apparatus according to a first embodiment of the invention;

FIG. 2 is a graph showing the spherical aberration, astigmatism and distortion of the first embodiment in order from left to right;

FIG. 3 is a schematic view illustrating an image capturing device according to a second embodiment of the present invention;

FIG. 4 is a graph showing the spherical aberration, astigmatism and distortion of the second embodiment in order from left to right;

FIG. 5 is a schematic view illustrating an image capturing apparatus according to a third embodiment of the present invention;

FIG. 6 is a graph showing the spherical aberration, astigmatism and distortion of the third embodiment in order from left to right;

FIG. 7 is a schematic view illustrating an image capturing apparatus according to a fourth embodiment of the present invention;

FIG. 8 is a graph showing the spherical aberration, astigmatism and distortion of the fourth embodiment in order from left to right;

fig. 9 is a schematic view illustrating an image capturing apparatus according to a fifth embodiment of the invention;

FIG. 10 is a graph showing the spherical aberration, astigmatism and distortion of the fifth embodiment in order from left to right;

fig. 11 is a schematic view illustrating an image capturing apparatus according to a sixth embodiment of the invention;

FIG. 12 is a graph showing spherical aberration, astigmatism and distortion curves of the sixth embodiment, in order from left to right;

fig. 13 is a schematic view illustrating an image capturing apparatus according to a seventh embodiment of the invention;

FIG. 14 is a graph showing the spherical aberration, astigmatism and distortion of the seventh embodiment in order from left to right;

fig. 15 is a schematic view illustrating an image capturing apparatus according to an eighth embodiment of the present invention;

FIG. 16 is a graph showing the spherical aberration, astigmatism and distortion of the eighth embodiment in order from left to right;

fig. 17 is a schematic view illustrating an image capturing apparatus according to a ninth embodiment of the invention;

FIG. 18 is a graph showing spherical aberration, astigmatism and distortion curves of the ninth embodiment, in order from left to right;

fig. 19 is a schematic view illustrating an image capturing apparatus according to a tenth embodiment of the invention;

FIG. 20 is a graph showing the spherical aberration, astigmatism and distortion of the tenth embodiment in order from left to right;

fig. 21 is a schematic view illustrating an image capturing apparatus according to an eleventh embodiment of the invention;

FIG. 22 is a graph showing spherical aberration, astigmatism and distortion curves of the eleventh embodiment, in order from left to right;

fig. 23 is a schematic view illustrating an image capturing apparatus according to a twelfth embodiment of the invention;

FIG. 24 is a graph showing spherical aberration, astigmatism and distortion curves, in order from left to right, for the twelfth embodiment;

fig. 25 is a schematic view illustrating an image capturing apparatus according to a thirteenth embodiment of the invention;

FIG. 26 is a graph showing, in order from left to right, spherical aberration, astigmatism and distortion curves of the thirteenth embodiment;

FIG. 27 is a schematic view illustrating the arrangement relationship between the image capturing lens assembly and the object and the image plane thereof according to the first embodiment of FIG. 1;

FIG. 28 is a schematic view illustrating another arrangement relationship of the image capturing lens assembly, the prism, the object and the image plane thereof according to the first embodiment of FIG. 1;

FIG. 29 is a schematic view of an electronic device according to a fourteenth embodiment of the invention;

FIG. 30 is a schematic view of an electronic device according to a fifteenth embodiment of the invention; and

fig. 31 is a schematic view illustrating an electronic device according to a sixteenth embodiment of the invention.

[ notation ] to show

An electronic device: 10. 20, 30

An image taking device: 11. 21, 31

Aperture: 100. 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300

Diaphragm: 1001

A first lens: 110. 210, 310, 410, 510, 610, 710, 810, 910, 1010, 1110, 1210, 1310

An object-side surface: 111. 211, 311, 411, 511, 611, 711, 811, 911, 1011, 1111, 1211, 1311

Image-side surface: 112. 212, 312, 412, 512, 612, 712, 812, 912, 1012, 1112, 1212, 1312

A second lens: 120. 220, 320, 420, 520, 620, 720, 820, 920, 1020, 1120, 1220, 1320

An object-side surface: 121. 221, 321, 421, 521, 621, 721, 821, 921, 1021, 1121, 1221, 1321

Image-side surface: 122. 222, 322, 422, 522, 622, 722, 822, 922, 1022, 1122, 1222, 1322

A third lens: 130. 230, 330, 430, 530, 630, 730, 830, 930, 1030, 1130, 1230, 1330

An object-side surface: 131. 231, 331, 431, 531, 631, 731, 831, 931, 1031, 1131, 1231, 1331

Image-side surface: 132. 232, 332, 432, 532, 632, 732, 832, 932, 1032, 1132, 1232, 1332

A fourth lens: 140. 240, 340, 440, 540, 640, 740, 840, 940, 1040, 1140, 1240, 1340

An object-side surface: 141. 241, 341, 441, 541, 641, 741, 841, 941, 1041, 1141, 1241, 1341

Image-side surface: 142. 242, 342, 442, 542, 642, 742, 842, 942, 1042, 1142, 1242, 1342

A fifth lens: 150. 250, 350, 450, 550, 650, 750, 850, 950, 1050, 1150, 1250, 1350

An object-side surface: 151. 251, 351, 451, 551, 651, 751, 851, 951, 1051, 1151, 1251, 1351

Image-side surface: 152. 252, 352, 452, 552, 652, 752, 852, 952, 1052, 1152, 1252, 1352

Infrared ray filtering filter element: 160. 260, 360, 460, 560, 660, 760, 860, 960, 1060, 1160, 1260, 1360

Imaging surface: 170. 270, 370, 470, 570, 670, 770, 870, 970, 1070, 1170, 1270, 1370

An electron-sensitive element: 180. 280, 380, 480, 580, 680, 780, 880, 980, 1080, 1180, 1280, 1380

O: subject matter

L: image capturing lens assembly

P: prism

f: focal length of image capturing lens assembly

Fno: aperture value of image capturing lens assembly

HFOV: half of maximum visual angle in image taking lens group

N1: refractive index of the first lens

N2: refractive index of the second lens

N3: refractive index of third lens

N4: refractive index of fourth lens

N5: refractive index of fifth lens

Nmax: the largest of N1, N2, N3, N4 and N5

V4: abbe number of fourth lens

V5: abbe number of fifth lens

T12: the distance between the first lens and the second 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

T45: the distance between the fourth lens and the fifth lens on the optical axis

R1: radius of curvature of object-side surface of first lens

R2: radius of curvature of image-side surface of first lens

R8: radius of curvature of image-side surface of fourth lens

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

f 1: focal length of the first lens

f 4: focal length of the fourth lens

f 5: focal length of fifth lens

f 12: the combined focal length of the first lens and the second lens

f 45: the combined focal length of the fourth lens and the fifth lens

CT 1: thickness of the first lens on the optical axis

SD: distance from aperture to image side surface of fifth lens on optical axis

TD: the distance between the object side surface of the first lens and the image side surface of the fifth lens on the optical axis

ImgH: maximum image height of image taking lens group

EPD: entrance pupil diameter of image capture lens assembly

TL: the distance from the object side surface of the first lens element to the image plane on the optical axis

Detailed Description

An image capturing lens assembly is provided, comprising, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element, wherein the total number of the image capturing lens assembly having refractive power is five.

In the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element of the image capturing lens assembly, any two adjacent lens elements have an air gap on the optical axis, that is, the image capturing lens assembly has five single non-cemented lens elements. Since the process of bonding the lens is more complicated than that of non-bonding lens, especially the bonding surface of the two lenses needs to have a curved surface with high accuracy so as to achieve high degree of adhesion when the two lenses are bonded, and the poor degree of adhesion caused by deviation may occur during the bonding process, which affects the overall optical imaging quality. Therefore, in the image capturing lens assembly of the present invention, an air space is formed between any two adjacent lenses with refractive power, which can effectively improve the problem caused by lens adhesion.

The first lens element with positive refractive power has a convex object-side surface and a convex image-side surface, so that the light converging capability of the image capturing lens assembly is concentrated at the object-side end thereof, and the size of the image capturing lens assembly can be effectively controlled, thereby improving the portability.

The second lens element has negative refractive power. Therefore, the aberration of the image capturing lens assembly can be corrected, so that the imaging quality is improved.

The third lens element with positive refractive power has a convex image-side surface. Therefore, the distribution of the positive refractive power of the image capturing lens assembly can be balanced, and the sensitivity of the image capturing lens assembly is reduced.

The fourth lens element with negative refractive power has a concave object-side surface and a concave image-side surface. Therefore, the main point of the image capturing lens assembly can be far away from the image side end, the back focal length of the image capturing lens assembly can be effectively controlled, the miniaturization can be favorably maintained, the aberration of the image capturing lens assembly can be strengthened and corrected, and the imaging quality is improved.

The fifth lens element with negative refractive power has a concave object-side surface and a convex image-side surface. Therefore, the main point of the image taking lens assembly can be far away from the image side end, the back focal length of the image taking lens assembly can be effectively controlled, the miniaturization can be favorably maintained, and the astigmatism of the image taking lens assembly can be corrected, so that the imaging quality is improved.

The image capturing lens assembly has a focal length f, a radius of curvature of an object-side surface of the first lens element is R1, a radius of curvature of an image-side surface of the first lens element is R2, and an axial thickness of the first lens element is CT1, wherein the following conditions are satisfied: 3.4< (f/R1) - (f/R2) + ((f × CT1)/(R1 × R2)) < 7.5. Therefore, the relation between the whole image taking lens assembly and the surface shape and the thickness of the first lens can be balanced at the same time, so that the first lens can exert the maximum effect, the photographing range is further controlled, and the optimal long-range photographing quality is achieved. Preferably, it can satisfy the following conditions: 3.7< (f/R1) - (f/R2) + ((f × CT1)/(R1 × R2)) < 6.0.

The focal length of the first lens is f1, the focal length of the fourth lens is f4, and the following conditions are met: -1.0< f1/f4< 0. Therefore, the light deflection degree of the side end of the image taking lens assembly can be enhanced, the lens magnification can be improved in a limited space, and more light can be received in the same image range.

The focal length of the image capturing lens assembly is f, and the radius of curvature of the object-side surface of the first lens element is R1, which satisfies the following conditions: 3.4< f/R1. Therefore, the shooting range can be effectively controlled, and the imaging quality of the local image has higher resolution.

The image capturing lens assembly may further include an aperture stop disposed between the first lens element and the third lens element. An axial distance between the stop and the image-side surface of the fifth lens element is SD, and an axial distance between the object-side surface of the first lens element and the image-side surface of the fifth lens element is TD, wherein the following conditions are satisfied: 0.65< SD/TD < 1.0. Therefore, the image taking lens group is beneficial to obtaining balance between the telecentric characteristic and the wide-field-angle characteristic. Preferably, it can satisfy the following conditions: 0.65< SD/TD < 0.87.

A radius of curvature of the image-side surface of the fourth lens element is R8, and a radius of curvature of the object-side surface of the fifth lens element is R9, wherein the following conditions are satisfied: -0.1< (R8+ R9)/(R8-R9). Therefore, the air interval between the fourth lens and the fifth lens can be controlled, and further the light ray deflection between the fourth lens and the fifth lens is regulated and controlled, so that the paraxial and off-axis light beam convergence capacity is balanced.

A radius of curvature of the object-side surface of the first lens element is R1, and a radius of curvature of the image-side surface of the first lens element is R2, wherein the following conditions are satisfied: -1.5< (R1+ R2)/(R1-R2) <0. Therefore, the method is beneficial to reducing the generation of spherical aberration and astigmatism so as to improve the imaging quality, and has the function of controlling the shooting range so as to achieve the best long-range shooting quality.

The refractive index of the first lens is N1, the refractive index of the second lens is N2, the refractive index of the third lens is N3, the refractive index of the fourth lens is N4, the refractive index of the fifth lens is N5, and the largest of N1, N2, N3, N4 and N5 is Nmax, which satisfies the following conditions: 1.50< Nmax < 1.70. Therefore, the chromatic aberration can be reduced by proper refractive index configuration, and the imaging quality is improved.

At least one of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element has positive refractive power, and the Abbe number of the lens element with positive refractive power is smaller than 30. Therefore, the distribution of the positive refractive power of the image capturing lens group can be balanced, the sensitivity of the image capturing lens group is reduced, and the chromatic aberration of the image capturing lens group is corrected.

The distance between the first lens element and the second lens element on the optical axis is T12, the distance between the second lens element and the third lens element on the optical axis is T23, the distance between the third lens element and the fourth lens element on the optical axis is T34, the distance between the fourth lens element and the fifth lens element on the optical axis is T45, and T45 may be greater than T12, T23, and T34. Therefore, the image taking lens group has enough space to relax the light path and is beneficial to increasing the imaging height.

The focal length of the image capturing lens assembly is f, and the maximum image height of the image capturing lens assembly is ImgH (i.e. half of the diagonal length of the effective sensing area of the electronic photosensitive element), which satisfies the following conditions: 2.3< f/ImgH < 6.0. Therefore, the size of the image capturing lens assembly can be effectively controlled, the miniaturization of the image capturing lens assembly is maintained, and the carrying convenience is improved.

The diameter of the entrance pupil of the image capturing lens assembly is EPD, the maximum image height of the image capturing lens assembly is ImgH, and the following conditions can be satisfied: 0.7< EPD/ImgH < 2.0. Therefore, the light-entering amount of the image taking lens group can be increased to obtain higher resolving power.

At least one of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element may include at least one inflection point. Therefore, the aberration of the off-axis field of view can be corrected to improve the quality of the peripheral image.

The optical axis distance between the object-side surface of the first lens element and the image plane is TL, which satisfies the following condition: 0.75< TL/f < 1.0. Therefore, the spatial configuration of the lens can be effectively controlled, and the ability of long-range shooting is improved.

The distance TL from the object-side surface of the first lens element to the image plane on the optical axis satisfies the following condition: TL <7.5 mm. Therefore, the miniaturization of the image taking lens group is favorably maintained.

Of the refractive powers of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element, the refractive power of the first lens element is strongest. (the magnitude of the net refractive power is relatively compared between the magnitude of the strong refractive power and the magnitude of the net refractive power, the strong refractive power means that the net refractive power is large, and the weak refractive power means that the net refractive power is small). Therefore, the convergence capacity of the first lens element can be enhanced, and the total length of the image capturing lens assembly can be shortened.

The focal length of the fourth lens is f4, and the focal length of the fifth lens is f5, which satisfies the following conditions: 0< f4/f 5. Therefore, the main point of the image capturing lens assembly can be far away from the image side end, the back focal length of the image capturing lens assembly can be effectively controlled, and the miniaturization can be maintained.

The distance between the third lens element and the fourth lens element is T34, and the distance between the fourth lens element and the fifth lens element is T45, which satisfies the following conditions: T34/T45< 1.2. Therefore, the third lens and the fourth lens are matched more closely to reduce aberration alternately, and meanwhile, a sufficient balance space is kept between the third lens and the fifth lens.

The distance TL from the object-side surface of the first lens element to the image plane on the optical axis is, the maximum image height of the image capturing lens assembly is ImgH, which satisfies the following conditions: 2.0< TL/ImgH < 3.5. Therefore, the total length of the image capturing lens assembly can be effectively shortened, and the miniaturization of the image capturing lens assembly is maintained.

The fourth lens has an abbe number of V4 and the fifth lens has an abbe number of V5, which satisfy the following conditions: 90< V4+ V5< 130. Therefore, the correction of the chromatic aberration of the image capturing lens group is facilitated.

Half of the maximum viewing angle of the image capturing lens assembly is HFOV, which satisfies the following conditions: 0.3< tan (2 × HFOV) < 1.1. Therefore, the optical lens has proper field angle and image capturing range, and reduces the influence of stray light.

The combined focal length of the first lens element and the second lens element is f12, and the combined focal length of the fourth lens element and the fifth lens element is f45, which satisfies the following conditions: -2.0< f12/f45 <0. Therefore, the telescopic optical system with positive front and negative back is formed, and the long-range photography can be clearly imaged.

In the image capturing lens assembly provided by the present invention, the lens element can be made of plastic or glass. When the lens is made of plastic, the production cost can be effectively reduced. In addition, when the lens element is made of glass, the degree of freedom of the arrangement of the refractive power of the image capturing lens assembly can be increased. In addition, the object-side surface and the image-side surface of the image capturing lens assembly can be Aspheric Surfaces (ASP), which can be easily made into shapes other than spherical surfaces to obtain more control variables for reducing the aberration and further reducing the number of the lenses, thereby effectively reducing the total track length of the image capturing lens assembly of the present invention.

Moreover, in the image capturing lens assembly provided by the present invention, if the lens surface is a convex surface and the position of the convex surface is not defined, it means that the lens surface is a convex surface at a position close to the optical axis; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at the paraxial region. In the image capturing lens assembly provided by the present invention, if the lens element has positive refractive power or negative refractive power, or the focal length of the lens element, the refractive power or the focal length of the lens element at the paraxial region thereof is referred to.

The image plane of the image capturing lens assembly of the present invention can be a plane or a curved surface with any curvature, especially a curved surface with a concave surface facing the object side, depending on the corresponding electronic photosensitive element.

In addition, the image capturing lens assembly of the present invention can be provided with at least one aperture according to requirements to reduce stray light and contribute to improving image quality.

In the image capturing lens assembly of the present invention, the aperture can be a front aperture or a middle aperture, wherein the front aperture means that the aperture is disposed between the object and the first lens element, and the middle aperture means that the aperture is disposed between the first lens element and the image plane. If the aperture is a front aperture, the Exit Pupil (Exit Pupil) of the image capturing lens assembly can generate a longer distance from the image plane, so that the image capturing lens assembly has a Telecentric (telecentricity) effect, and the image receiving efficiency of a CCD (charge coupled device) or a CMOS (complementary metal oxide semiconductor) of the electronic photosensitive element can be increased; if the aperture is arranged in the middle, the view angle of the system is favorably enlarged, and the image taking lens group has the advantage of a wide-angle lens.

The image capturing lens assembly of the invention can be applied to an optical system for moving focusing according to the requirements, and has the characteristics of excellent aberration correction and good imaging quality. The invention can also be applied to electronic devices such as three-dimensional (3D) image acquisition, digital cameras, mobile products, digital flat panels, smart televisions, network monitoring equipment, motion sensing game machines, automobile recorders, backing developing devices, wearable products and the like in many ways.

The invention provides an image capturing device, comprising the image capturing lens assembly and an electronic photosensitive element, wherein the electronic photosensitive element is arranged on an imaging surface of the image capturing lens assembly. The first lens element with positive refractive power can concentrate the light converging capability of the entire image capturing lens assembly on the object side thereof, thereby effectively controlling the volume of the image capturing lens assembly and improving the carrying convenience. In addition, the fourth lens element and the fifth lens element of the optical lens assembly for image capture both have negative refractive power, so that a Principal Point (Principal Point) of the optical lens assembly for image capture can be kept away from the image side thereof, thereby effectively controlling the back focal length of the optical lens assembly for image capture, and facilitating to maintain miniaturization. Preferably, the image capturing device may further include a Barrel (Barrel Member), a Holder (Holder Member), or a combination thereof.

The image capturing device may further include a prism disposed on a light path between the object and the image plane of the image capturing lens assembly, which may be disposed between the object and the image capturing lens assembly (as shown in fig. 28), or disposed in the image capturing lens assembly (not shown) or between the image capturing lens assembly and the image plane (not shown). Therefore, the light path of the incident light can be turned according to the actual requirement, the height required to be set by the image capturing lens group is reduced, and the miniaturization of the image capturing device or the carried electronic device can be promoted.

The invention provides an electronic device comprising the image capturing device. Therefore, the advantages of miniaturization are exerted, a better long-range shooting effect is provided, and the imaging quality can be improved. Preferably, the electronic device may further include a Control Unit (Control Unit), a Display Unit (Display), a Storage Unit (Storage Unit), a Random Access Memory (RAM), or a combination thereof.

The following provides a detailed description of the embodiments with reference to the accompanying drawings.

< first embodiment >

Referring to fig. 1 and fig. 2, wherein fig. 1 is a schematic diagram of an image capturing device according to a first embodiment of the invention, and fig. 2 is a graph of spherical aberration, astigmatism and distortion of the first embodiment in order from left to right. As shown in fig. 1, the image capturing device of the first embodiment includes an image capturing lens assembly (not numbered) and an electronic photosensitive element 180. The image capturing lens assembly includes, in order from an object side to an image side, a first lens element 110, an aperture stop 100, a second lens element 120, a third lens element 130, a fourth lens element 140, a fifth lens element 150, an ir-cut filter 160 and an image plane 170, and the electro-optic sensor 180 is disposed on the image plane 170 of the image capturing lens assembly, wherein the image capturing lens assembly has five total refractive power lens elements (110 and 150), and any two adjacent lens elements of the first lens element 110, the second lens element 120, the third lens element 130, the fourth lens element 140 and the fifth lens element 150 have an air gap on an optical axis.

The first lens element 110 with positive refractive power has a convex object-side surface 111 and a convex image-side surface 112. In addition, the first lens object side surface 111 has at least one inflection point.

The second lens element 120 with negative refractive power has a concave object-side surface 121 and a concave image-side surface 122. In addition, the second lens object side surface 121 has at least one inflection point.

The third lens element 130 with positive refractive power has a concave object-side surface 131 and a convex image-side surface 132. In addition, the object-side surface 131 and the image-side surface 132 of the third lens element have at least one inflection point.

The fourth lens element 140 with negative refractive power has a concave object-side surface 141 and a concave image-side surface 142. In addition, the fourth lens element image-side surface 142 has at least one inflection point.

The fifth lens element 150 with negative refractive power has a concave object-side surface 151 and a convex image-side surface 152.

In addition, the refractive power of the first lens element 110 is the strongest of the refractive powers of the first lens element 110, the second lens element 120, the third lens element 130, the fourth lens element 140 and the fifth lens element 150.

The ir-cut filter 160 is made of glass, and is disposed between the fifth lens element 150 and the image plane 170, and does not affect the focal length of the image capturing lens assembly.

The curve equation of the aspherical surface of each lens described above is as follows:

wherein:

x: the distance between the point on the aspheric surface, which is Y from the optical axis, and the relative distance between the point and the tangent plane of the intersection point tangent to the aspheric surface optical axis;

y: the perpendicular distance between a point on the aspheric curve and the optical axis;

r: a radius of curvature;

k: the cone coefficient; and

ai: the ith order aspheric coefficients.

In the image capturing lens assembly of the first embodiment, the focal length of the image capturing lens assembly is f, the aperture value (f-number) of the image capturing lens assembly is Fno, and half of the maximum viewing angle in the image capturing lens assembly is HFOV, and the values thereof are as follows: f is 6.07 mm; fno 2.95; and HFOV 18.5 degrees.

In the image capturing lens assembly of the first embodiment, the refractive index of the first lens element 110 is N1, the refractive index of the second lens element 120 is N2, the refractive index of the third lens element 130 is N3, the refractive index of the fourth lens element 140 is N4, the refractive index of the fifth lens element is N5, and the largest of N1, N2, N3, N4 and N5 is Nmax, which satisfies the following conditions: nmax is 1.639.

In the image capturing lens assembly of the first embodiment, the fourth lens element 140 has an abbe number of V4, and the fifth lens element 150 has an abbe number of V5, which satisfy the following conditions: v4+ V5 is 111.8.

In the image capturing lens assembly of the first embodiment, the distance between the third lens element 130 and the fourth lens element 140 is T34, and the distance between the fourth lens element 140 and the fifth lens element is T45, which satisfies the following conditions: T34/T45 equals 0.21.

In the image capturing lens assembly of the first embodiment, the focal length of the image capturing lens assembly is f, and the radius of curvature of the object-side surface 111 of the first lens element is R1, which satisfies the following conditions: f/R1 is 4.10.

In the image capturing lens assembly of the first embodiment, the radius of curvature of the object-side surface 111 of the first lens element is R1, the radius of curvature of the image-side surface 112 of the first lens element is R2, the radius of curvature of the image-side surface 142 of the fourth lens element is R8, and the radius of curvature of the object-side surface 151 of the fifth lens element is R9, which satisfies the following conditions: (R1+ R2)/(R1-R2) — 0.58; and (R8+ R9)/(R8-R9) 0.22.

In the image capturing lens assembly of the first embodiment, the focal length of the first lens element 110 is f1, the focal length of the fourth lens element 140 is f4, the focal length of the fifth lens element 150 is f5, the combined focal length of the first lens element 110 and the second lens element 120 is f12, and the combined focal length of the fourth lens element 140 and the fifth lens element 150 is f45, which satisfies the following conditions: f1/f4 is-0.56; f4/f5 is 0.08; and f12/f45 is-1.19.

In the image capturing lens assembly of the first embodiment, the focal length of the image capturing lens assembly is f, the radius of curvature of the object-side surface 111 of the first lens element is R1, the radius of curvature of the image-side surface 112 of the first lens element is R2, and the axial thickness of the first lens element 110 is CT1, which satisfies the following conditions: (f/R1) - (f/R2) + ((f × CT1)/(R1 × R2)) -4.40.

In the image capturing lens assembly of the first embodiment, half of the maximum viewing angle of the image capturing lens assembly is HFOV, which satisfies the following conditions: tan (2 × HFOV) ═ 0.75.

In the image capturing lens assembly of the first embodiment, an axial distance between the aperture stop 100 and the image-side surface 152 of the fifth lens element is SD, and an axial distance between the object-side surface 111 and the image-side surface 152 of the first lens element is TD, which satisfy the following conditions: SD/TD is 0.76.

In the image capturing lens assembly of the first embodiment, the focal length of the image capturing lens assembly is f, the maximum image height of the image capturing lens assembly is ImgH, and the entrance pupil diameter of the image capturing lens assembly is EPD, which satisfies the following conditions: f/ImgH is 2.89; and EPD/ImgH is 0.98.

In the image capturing lens assembly of the first embodiment, an axial distance between the object-side surface 111 of the first lens element and the image plane 170 is TL, a focal length of the image capturing lens assembly is f, and a maximum image height of the image capturing lens assembly is ImgH, which satisfies the following conditions: TL ═ 5.89; TL/f is 0.97; and TL/ImgH 2.81.

The following list I and list II are referred to cooperatively.

The first embodiment of the present disclosure shows detailed structural data of the first embodiment of FIG. 1, wherein the units of the radius of curvature, the thickness and the focal length are mm, and the surfaces 0-14 sequentially represent the surfaces from the object side to the image side. Table II shows aspheric data of the first embodiment, where k represents the cone coefficients in the aspheric curve equation, and A4-A14 represents the 4 th to 14 th order aspheric coefficients of each surface. In addition, the following tables of the embodiments correspond to the schematic diagrams and aberration graphs of the embodiments, and the definitions of the data in the tables are the same as those of the first and second tables of the first embodiment, which is not repeated herein.

In addition, as can be seen from the above table i, in the first embodiment, the third lens element 130 has positive refractive power and an abbe number smaller than 30.

Furthermore, as can be seen from the above table, in the first embodiment, the distance between the first lens element 110 and the second lens element 120 on the optical axis is T12, the distance between the second lens element 120 and the third lens element 130 on the optical axis is T23, the distance between the third lens element 130 and the fourth lens element 140 on the optical axis is T34, and the distance between the fourth lens element 140 and the fifth lens element 150 on the optical axis is T45, wherein T45 is greater than T12, T23 and T34.

Please refer to fig. 27, which is a schematic diagram illustrating the arrangement relationship between the image capturing lens assembly L and the object O and the image plane 170 thereof according to the first embodiment of fig. 1. As shown in fig. 27, the incident light is incident on the image capturing lens assembly L from the object O and forms an image on the image plane 170.

Referring to fig. 28, another arrangement relationship of the image capturing lens assembly L, the prism P, the object O and the image plane 170 thereof according to the first embodiment of fig. 1 is shown. As shown in fig. 28, the image capturing device further includes a prism P disposed on the optical path between the object O and the image plane 170 of the image capturing lens assembly L. The prism P is disposed to turn the light path of the incident light, thereby reducing the height of the image capturing lens assembly L, and further facilitating the miniaturization of the image capturing device or the electronic device carried by the image capturing device.

The following embodiments can be configured as shown in fig. 27 or fig. 28, and therefore, are not described in detail.

< second embodiment >

Referring to fig. 3 and fig. 4, wherein fig. 3 is a schematic diagram of an image capturing device according to a second embodiment of the invention, and fig. 4 is a graph of spherical aberration, astigmatism and distortion of the second embodiment in order from left to right. As shown in fig. 3, the image capturing device of the second embodiment includes an image capturing lens assembly (not numbered) and an electronic photosensitive element 280. The image capturing lens assembly includes, in order from an object side to an image side, a first lens element 210, an aperture stop 200, a second lens element 220, a third lens element 230, a fourth lens element 240, a fifth lens element 250, an ir-cut filter 260 and an image plane 270, and an electro-optic sensor 280 is disposed on the image plane 270 of the image capturing lens assembly, wherein the image capturing lens assembly has five total refractive power lens elements (210 and 250), and any two adjacent lens elements of the first lens element 210, the second lens element 220, the third lens element 230, the fourth lens element 240 and the fifth lens element 250 have an air gap therebetween on an optical axis.

The first lens element 210 with positive refractive power has a convex object-side surface 211 and a convex image-side surface 212. In addition, the first lens object side surface 211 has at least one inflection point.

The second lens element 220 with negative refractive power has a concave object-side surface 221 and a concave image-side surface 222. In addition, the second lens object side surface 221 has at least one inflection point.

The third lens element 230 with positive refractive power has a convex object-side surface 231 and a convex image-side surface 232. In addition, the third lens object side surface 231 has at least one inflection point.

The fourth lens element 240 with negative refractive power has a concave object-side surface 241 and a concave image-side surface 242.

The fifth lens element 250 with negative refractive power has a concave object-side surface 251 and a convex image-side surface 252. In addition, the fifth lens object side surface 251 has at least one inflection point.

In addition, the refractive power of the first lens element 210 is the strongest of the refractive powers of the first lens element 210, the second lens element 220, the third lens element 230, the fourth lens element 240 and the fifth lens element 250.

The ir-cut filter 260 is made of glass, and disposed between the fifth lens element 250 and the image plane 270 without affecting the focal length of the image capturing lens assembly.

The following third and fourth tables are referred to in combination.

In the second embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the following parameters are defined in the same way as in the first embodiment and will not be described herein.

The following data can be calculated by matching table three and table four:

in addition, as can be seen from the above table three, in the second embodiment, the third lens element 230 has positive refractive power and an abbe number smaller than 30.

Furthermore, as can be seen from the above list three, in the second embodiment, the distance between the first lens element 210 and the second lens element 220 on the optical axis is T12, the distance between the second lens element 220 and the third lens element 230 on the optical axis is T23, the distance between the third lens element 230 and the fourth lens element 240 on the optical axis is T34, and the distance between the fourth lens element 240 and the fifth lens element 250 on the optical axis is T45, wherein T45 is greater than T12, T23 and T34.

< third embodiment >

Referring to fig. 5 and fig. 6, wherein fig. 5 is a schematic diagram of an image capturing apparatus according to a third embodiment of the present invention, and fig. 6 is a graph of spherical aberration, astigmatism and distortion of the third embodiment in order from left to right. As shown in fig. 5, the image capturing device of the third embodiment includes an image capturing lens assembly (not shown) and an electronic photosensitive element 380. The image capturing lens assembly includes, in order from an object side to an image side, a first lens element 310, an aperture stop 300, a second lens element 320, a third lens element 330, a fourth lens element 340, a fifth lens element 350, an ir-cut filter element 360 and an image plane 370, and an electro-optic sensor 380 is disposed on the image plane 370 of the image capturing lens assembly, wherein the image capturing lens assembly has five total refractive power lens elements (310 and 350), and any two adjacent lens elements of the first lens element 310, the second lens element 320, the third lens element 330, the fourth lens element 340 and the fifth lens element 350 have an air gap therebetween on an optical axis.

The first lens element 310 with positive refractive power has a convex object-side surface 311 and a convex image-side surface 312. In addition, the first lens object side surface 311 has at least one inflection point.

The second lens element 320 with negative refractive power has a concave object-side surface 321 and a concave image-side surface 322. In addition, the second lens object-side surface 321 has at least one inflection point.

The third lens element 330 with positive refractive power has a concave object-side surface 331 and a convex image-side surface 332. In addition, the third lens object side surface 331 has at least one inflection point.

The fourth lens element 340 with negative refractive power has a concave object-side surface 341 and a concave image-side surface 342.

The fifth lens element 350 with negative refractive power has a concave object-side surface 351 and a convex image-side surface 352. In addition, the fifth lens object side surface 351 has at least one inflection point.

In addition, the refractive power of the first lens element 310 is the strongest of the refractive powers of the first lens element 310, the second lens element 320, the third lens element 330, the fourth lens element 340 and the fifth lens element 350.

The ir-cut filter 360 is made of glass, and disposed between the fifth lens element 350 and the image plane 370, and does not affect the focal length of the image capturing lens assembly.

See also table five and table six below.

In the third embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the following parameters are defined in the same way as in the first embodiment and will not be described herein.

The following data can be derived by matching table five and table six:

in addition, as can be seen from the fifth table, in the third embodiment, the third lens element 330 has positive refractive power and an abbe number smaller than 30.

Moreover, as can be seen from the above table, in the third embodiment, the distance between the first lens element 310 and the second lens element 320 is T12, the distance between the second lens element 320 and the third lens element 330 is T23, the distance between the third lens element 330 and the fourth lens element 340 is T34, and the distance between the fourth lens element 340 and the fifth lens element 350 is T45, wherein T45 is greater than T12, T23 and T34.

< fourth embodiment >

Referring to fig. 7 and 8, wherein fig. 7 is a schematic diagram of an image capturing apparatus according to a fourth embodiment of the invention, and fig. 8 is a graph of spherical aberration, astigmatism and distortion of the fourth embodiment in order from left to right. As shown in fig. 7, the image capturing device of the fourth embodiment includes an image capturing lens assembly (not shown) and an electronic photosensitive element 480. The image capturing lens assembly includes, in order from an object side to an image side, a first lens element 410, an aperture stop 400, a second lens element 420, a third lens element 430, a fourth lens element 440, a fifth lens element 450, an ir-cut filter 460 and an image plane 470, wherein the electro-optic sensing element 480 is disposed on the image plane 470 of the image capturing lens assembly, wherein the image capturing lens assembly has five total refractive power lens elements (410 and 450), and any two adjacent lens elements of the first lens element 410, the second lens element 420, the third lens element 430, the fourth lens element 440 and the fifth lens element 450 have an air gap therebetween on an optical axis.

The first lens element 410 with positive refractive power has a convex object-side surface 411 and a convex image-side surface 412. In addition, the first lens object side surface 411 has at least one inflection point.

The second lens element 420 with negative refractive power has a concave object-side surface 421 and a concave image-side surface 422. In addition, the second lens object side surface 421 has at least one inflection point.

The third lens element 430 with positive refractive power has a concave object-side surface 431 and a convex image-side surface 432. In addition, the object-side surface 431 and the image-side surface 432 of the third lens element have at least one inflection point.

The fourth lens element 440 with negative refractive power has a concave object-side surface 441 and a convex image-side surface 442. In addition, the fourth lens element image-side surface 442 has at least one inflection point.

The fifth lens element 450 with negative refractive power has a concave object-side surface 451 and a concave image-side surface 452. In addition, the fifth lens element side surface 452 has at least one inflection point.

In addition, the refractive power of the first lens element 410 is the strongest of the refractive powers of the first lens element 410, the second lens element 420, the third lens element 430, the fourth lens element 440 and the fifth lens element 450.

The ir-cut filter 460 is made of glass, and disposed between the fifth lens element 450 and the image plane 470, and does not affect the focal length of the image capturing lens assembly.

See also table seven and table eight below.

In the fourth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the following parameters are defined in the same way as in the first embodiment and will not be described herein.

The following data can be derived by matching table seven and table eight:

in addition, as can be seen from the seventh table, in the fourth embodiment, the third lens element 430 has positive refractive power and an abbe number smaller than 30.

Moreover, as shown in the seventh embodiment, the distance between the first lens element 410 and the second lens element 420 on the optical axis is T12, the distance between the second lens element 420 and the third lens element 430 on the optical axis is T23, the distance between the third lens element 430 and the fourth lens element 440 on the optical axis is T34, and the distance between the fourth lens element 440 and the fifth lens element 450 on the optical axis is T45, wherein T45 is greater than T12, T23 and T34.

< fifth embodiment >

Referring to fig. 9 and 10, fig. 9 is a schematic diagram illustrating an image capturing device according to a fifth embodiment of the invention, and fig. 10 is a graph illustrating spherical aberration, astigmatism and distortion of the fifth embodiment in order from left to right. As shown in fig. 9, the image capturing device of the fifth embodiment includes an image capturing lens assembly (not numbered) and an electronic photosensitive element 580. The image capturing lens assembly includes, in order from an object side to an image side, a first lens element 510, an aperture stop 500, a second lens element 520, a third lens element 530, a fourth lens element 540, a fifth lens element 550, an ir-cut filter 560 and an image plane 570, and an electro-optic sensor 580 is disposed on the image plane 570 of the image capturing lens assembly, wherein the image capturing lens assembly has five total refractive power lens elements (510 and 550), and any two adjacent lens elements of the first lens element 510, the second lens element 520, the third lens element 530, the fourth lens element 540 and the fifth lens element 550 have an air gap therebetween on an optical axis.

The first lens element 510 with positive refractive power has a convex object-side surface 511 and a convex image-side surface 512. In addition, the first lens object side surface 511 has at least one inflection point.

The second lens element 520 with negative refractive power has a concave object-side surface 521 and a concave image-side surface 522. In addition, the second lens object side surface 521 has at least one inflection point.

The third lens element 530 with negative refractive power has a concave object-side surface 531 and a convex image-side surface 532. In addition, the third lens image-side surface 532 has at least one inflection point.

The fourth lens element 540 with negative refractive power has a concave object-side surface 541 and a convex image-side surface 542. In addition, the object-side surface 541 and the image-side surface 542 of the fourth lens element have at least one inflection point.

The fifth lens element 550 with negative refractive power has a concave object-side surface 551 and a concave image-side surface 552. In addition, the fifth lens image-side surface 552 has at least one inflection point.

In addition, the refractive power of the first lens element 510 is the strongest of the refractive powers of the first lens element 510, the second lens element 520, the third lens element 530, the fourth lens element 540 and the fifth lens element 550.

The ir-cut filter 560 is made of glass, and disposed between the fifth lens element 550 and the image plane 570 without affecting the focal length of the image capturing lens assembly.

Reference is again made to table nine and table ten below.

In the fifth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the following parameters are defined in the same way as in the first embodiment and will not be described herein.

The following data can be derived from tables nine and ten:

moreover, as can be seen from the above table nine, in the fifth embodiment, the distance between the first lens element 510 and the second lens element 520 on the optical axis is T12, the distance between the second lens element 520 and the third lens element 530 on the optical axis is T23, the distance between the third lens element 530 and the fourth lens element 540 on the optical axis is T34, and the distance between the fourth lens element 540 and the fifth lens element 550 on the optical axis is T45, wherein T45 is greater than T12, T23 and T34.

< sixth embodiment >

Referring to fig. 11 and 12, wherein fig. 11 is a schematic diagram illustrating an image capturing device according to a sixth embodiment of the invention, and fig. 12 is a graph illustrating spherical aberration, astigmatism and distortion in the sixth embodiment from left to right. As shown in fig. 11, the image capturing device of the sixth embodiment includes an image capturing lens assembly (not shown) and an electronic photosensitive element 680. The image capturing lens assembly includes, in order from an object side to an image side, a first lens element 610, a second lens element 620, an aperture stop 600, a third lens element 630, a fourth lens element 640, a fifth lens element 650, an ir-cut filter element 660 and an image plane 670, and an electro-optic sensing element 680 is disposed on the image plane 670 of the image capturing lens assembly, wherein the image capturing lens assembly has five total refractive power lens elements (610 and 650), and any two adjacent lens elements of the first lens element 610, the second lens element 620, the third lens element 630, the fourth lens element 640 and the fifth lens element 650 have an air gap therebetween on an optical axis.

The first lens element 610 with positive refractive power has a convex object-side surface 611 and a convex image-side surface 612. In addition, the first lens object side surface 611 has at least one inflection point.

The second lens element 620 with negative refractive power has a concave object-side surface 621 and a concave image-side surface 622. In addition, the object-side surface 621 and the image-side surface 622 of the second lens element have at least one inflection point.

The third lens element 630 with negative refractive power has a concave object-side surface 631 and a convex image-side surface 632. In addition, the image-side surface 632 of the third lens element has at least one inflection point.

The fourth lens element 640 with negative refractive power has a concave object-side surface 641 and a concave image-side surface 642.

The fifth lens element 650 with negative refractive power has a concave object-side surface 651 and a convex image-side surface 652.

In addition, the refractive power of the first lens element 610 is the strongest of the refractive powers of the first lens element 610, the second lens element 620, the third lens element 630, the fourth lens element 640 and the fifth lens element 650.

The ir-cut filter 660 is made of glass, and disposed between the fifth lens element 650 and the image plane 670, and does not affect the focal length of the image capturing lens assembly.

Reference is again made to the following table eleven and table twelve.

In the sixth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the following parameters are defined in the same way as in the first embodiment and will not be described herein.

The following data can be derived from table eleven and table twelve:

moreover, as can be seen from the eleventh table, in the sixth embodiment, the distance between the first lens element 610 and the second lens element 620 on the optical axis is T12, the distance between the second lens element 620 and the third lens element 630 on the optical axis is T23, the distance between the third lens element 630 and the fourth lens element 640 on the optical axis is T34, and the distance between the fourth lens element 640 and the fifth lens element 650 on the optical axis is T45, wherein T45 is greater than T12, T23 and T34.

< seventh embodiment >

Referring to fig. 13 and 14, wherein fig. 13 is a schematic diagram of an image capturing apparatus according to a seventh embodiment of the invention, and fig. 14 is a graph of spherical aberration, astigmatism and distortion of the seventh embodiment sequentially from left to right. As shown in fig. 13, the image capturing device of the seventh embodiment includes an image capturing lens assembly (not numbered) and an electro-optic sensor 780. The image capturing lens assembly includes, in order from an object side to an image side, a first lens element 710, a second lens element 720, an aperture stop 700, a third lens element 730, a fourth lens element 740, a fifth lens element 750, an ir-cut filter element 760 and an image plane 770, wherein the electro-optic sensing element 780 is disposed on the image plane 770 of the image capturing lens assembly, wherein the image capturing lens assembly has five total refractive power lens elements (710-750), and any two adjacent lens elements of the first lens element 710, the second lens element 720, the third lens element 730, the fourth lens element 740 and the fifth lens element 750 have an air gap on an optical axis.

The first lens element 710 with positive refractive power has a convex object-side surface 711 and a convex image-side surface 712. In addition, the first lens object side surface 711 has at least one inflection point.

The second lens element 720 with positive refractive power has a concave object-side surface 721 and a convex image-side surface 722. In addition, the second lens element has an object-side surface 721 and an image-side surface 722 with at least one inflection point.

The third lens element 730 with negative refractive power has a concave object-side surface 731 and a convex image-side surface 732. In addition, the image-side surface 732 of the third lens element has at least one inflection point.

The fourth lens element 740 with negative refractive power has a convex object-side surface 741 and a concave image-side surface 742. In addition, the fourth lens object side surface 741 has at least one inflection point.

The fifth lens element 750 with negative refractive power has a concave object-side surface 751 and a convex image-side surface 752. In addition, the fifth lens object side surface 751 has at least one inflection point.

In addition, the refractive power of the first lens element 710 is the strongest of the refractive powers of the first lens element 710, the second lens element 720, the third lens element 730, the fourth lens element 740 and the fifth lens element 750.

The ir-cut filter 760 is made of glass, and disposed between the fifth lens element 750 and the image plane 770 without affecting the focal length of the image capturing lens assembly.

Reference is again made to the following thirteen and fourteen tables.

In the seventh embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the following parameters are defined in the same way as in the first embodiment and will not be described herein.

The following data can be derived from table thirteen and table fourteen:

in addition, as can be seen from the above thirteen tables, in the seventh embodiment, the second lens element 720 has positive refractive power and an abbe number smaller than 30.

Moreover, as can be seen from the above table, in the seventh embodiment, the distance between the first lens element 710 and the second lens element 720 along the optical axis is T12, the distance between the second lens element 720 and the third lens element 730 along the optical axis is T23, the distance between the third lens element 730 and the fourth lens element 740 along the optical axis is T34, and the distance between the fourth lens element 740 and the fifth lens element 750 along the optical axis is T45, wherein T45 is greater than T12, T23 and T34.

< eighth embodiment >

Referring to fig. 15 and 16, wherein fig. 15 is a schematic diagram of an image capturing apparatus according to an eighth embodiment of the present invention, and fig. 16 is a graph illustrating spherical aberration, astigmatism and distortion of the eighth embodiment in order from left to right. As shown in fig. 15, the image capturing device of the eighth embodiment includes an image capturing lens assembly (not shown) and an electronic photosensitive element 880. The image capturing lens assembly includes, in order from an object side to an image side, a first lens element 810, an aperture stop 800, a second lens element 820, a third lens element 830, a fourth lens element 840, a fifth lens element 850, an ir-cut filter 860 and an image plane 870, wherein the image capturing lens assembly includes five lens elements (810 and 850) having refractive power, and any two adjacent lens elements of the first lens element 810, the second lens element 820, the third lens element 830, the fourth lens element 840 and the fifth lens element 850 have an air gap therebetween.

The first lens element 810 with positive refractive power has a convex object-side surface 811 and a convex image-side surface 812. In addition, the first lens object side surface 811 has at least one inflection point.

The second lens element 820 with negative refractive power has a concave object-side surface 821 and a concave image-side surface 822. In addition, the second lens object side surface 821 has at least one inflection point.

The third lens element 830 with positive refractive power has a convex object-side surface 831 and a concave image-side surface 832. In addition, the third lens element image-side surface 832 has at least one inflection point.

The fourth lens element 840 with negative refractive power has a concave object-side surface 841 and a convex image-side surface 842. In addition, the object-side surface 841 and the image-side surface 842 of the fourth lens element have at least one inflection point.

The fifth lens element 850 with negative refractive power has a concave object-side surface 851 and a concave image-side surface 852. In addition, the object-side surface 851 and the image-side surface 852 of the fifth lens element each have at least one inflection point.

In addition, the refractive power of the first lens element 810 is the strongest of the refractive powers of the first lens element 810, the second lens element 820, the third lens element 830, the fourth lens element 840 and the fifth lens element 850.

The ir-cut filter 860 is made of glass, and is disposed between the fifth lens element 850 and the image plane 870 without affecting the focal length of the image capturing lens assembly.

See also table fifteen below and table sixteen.

In the eighth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the following parameters are defined in the same way as in the first embodiment and will not be described herein.

The following data can be derived from the table fifteen and table sixteen:

in addition, as can be seen from the fifteenth table, in the eighth embodiment, the third lens element 830 has positive refractive power and an abbe number smaller than 30.

< ninth embodiment >

Referring to fig. 17 and fig. 18, wherein fig. 17 is a schematic diagram of an image capturing apparatus according to a ninth embodiment of the invention, and fig. 18 is a graph of spherical aberration, astigmatism and distortion of the ninth embodiment in order from left to right. As shown in fig. 17, the image capturing device of the ninth embodiment includes an image capturing lens assembly (not shown) and an electronic photosensitive element 980. The image capturing lens assembly includes, in order from an object side to an image side, a first lens element 910, an aperture stop 900, a second lens element 920, a third lens element 930, a fourth lens element 940, a fifth lens element 950, an ir-cut filter element 960 and an image plane 970, and an electro-optic sensor 980 is disposed on the image plane 970 of the image capturing lens assembly, wherein the image capturing lens assembly has five total refractive power lens elements (910 and 950), and any two adjacent lens elements of the first lens element 910, the second lens element 920, the third lens element 930, the fourth lens element 940 and the fifth lens element 950 have an air gap on an optical axis.

The first lens element 910 with positive refractive power has a convex object-side surface 911 and a convex image-side surface 912. In addition, the first lens object-side surface 911 has at least one inflection point.

The second lens element 920 with negative refractive power has a concave object-side surface 921 and a concave image-side surface 922. In addition, the second lens object-side surface 921 has at least one inflection point.

The third lens element 930 with positive refractive power has a convex object-side surface 931 and a convex image-side surface 932. In addition, the object-side surface 931 and the image-side surface 932 of the third lens element have at least one inflection point.

The fourth lens element 940 with negative refractive power has a concave object-side surface 941 and a concave image-side surface 942. In addition, the object-side surface 941 of the fourth lens has at least one inflection point.

The fifth lens element 950 with negative refractive power has a concave object-side surface 951 and a convex image-side surface 952. In addition, the object-side surface 951 and the image-side surface 952 of the fifth lens element have at least one inflection point.

In addition, the refractive power of the first lens element 910 is the strongest of the refractive powers of the first lens element 910, the second lens element 920, the third lens element 930, the fourth lens element 940 and the fifth lens element 950.

The ir-cut filter element 960 is made of glass, and is disposed between the fifth lens element 950 and the image plane 970, and does not affect the focal length of the image capturing lens assembly.

Further, reference is made to the seventeenth and eighteen tables below.

In the ninth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the following parameters are defined in the same way as in the first embodiment and will not be described herein.

The following data can be derived from the seventeenth and eighteen tables:

in addition, as can be seen from the above table seventeen, in the ninth embodiment, the third lens element 930 has positive refractive power and an abbe number smaller than 30.

Moreover, as can be seen from the above table seventeenth, in the ninth embodiment, the distance between the first lens element 910 and the second lens element 920 on the optical axis is T12, the distance between the second lens element 920 and the third lens element 930 on the optical axis is T23, the distance between the third lens element 930 and the fourth lens element 940 on the optical axis is T34, and the distance between the fourth lens element 940 and the fifth lens element 950 on the optical axis is T45, wherein T45 is greater than T12, T23 and T34.

< tenth embodiment >

Referring to fig. 19 and 20, fig. 19 is a schematic diagram illustrating an image capturing device according to a tenth embodiment of the invention, and fig. 20 is a graph illustrating spherical aberration, astigmatism and distortion of the tenth embodiment in order from left to right. As shown in fig. 19, the image capturing device of the tenth embodiment includes an image capturing lens assembly (not numbered) and an electro-optic element 1080. The image capturing lens assembly includes, in order from an object side to an image side, a first lens element 1010, an aperture stop 1000, a second lens element 1020, a third lens element 1030, a diaphragm 1001, a fourth lens element 1040, a fifth lens element 1050, an ir-cut filter element 1060 and an image plane 1070, and an electro-optic sensing element 1080 is disposed on the image plane 1070, wherein the total number of the lens elements having refractive power of the image capturing lens assembly is five (1010 and 1050), and any two adjacent lens elements of the first lens element 1010, the second lens element 1020, the third lens element 1030, the fourth lens element 1040 and the fifth lens element 1050 have an air gap therebetween on an optical axis.

The first lens element 1010 with positive refractive power has a convex object-side surface 1011 and a convex image-side surface 1012. In addition, the object-side surface 1011 of the first lens element has at least one inflection point.

The second lens element 1020 with negative refractive power has a concave object-side surface 1021 and a concave image-side surface 1022. In addition, the second lens object side surface 1021 has at least one inflection point.

The third lens element 1030 with positive refractive power has a convex object-side surface 1031 and a convex image-side surface 1032. In addition, the third lens image-side surface 1032 has at least one inflection point.

The fourth lens element 1040 with negative refractive power has a concave object-side surface 1041 and a concave image-side surface 1042. In addition, the fourth lens element image-side surface 1042 has at least one inflection point.

The fifth lens element 1050 with negative refractive power has a concave object-side surface 1051 and a concave image-side surface 1052. In addition, the object-side surface 1051 and the image-side surface 1052 each have at least one inflection point.

In addition, the refractive power of the first lens element 1010 is the strongest of the refractive powers of the first lens element 1010, the second lens element 1020, the third lens element 1030, the fourth lens element 1040 and the fifth lens element 1050.

The ir-cut filter 1060 is made of glass, and disposed between the fifth lens element 1050 and the image plane 1070, and does not affect the focal length of the image capturing lens assembly.

Further reference is made to the following nineteen and twenty tables.

In the tenth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the following parameters are defined in the same way as in the first embodiment and will not be described herein.

The following data can be derived from the nineteen and twenty tables:

in addition, as can be seen from the nineteenth table, in the tenth embodiment, the third lens element 1030 has positive refractive power and an abbe number smaller than 30.

Furthermore, as can be seen from the nineteenth table, in the tenth embodiment, the distance between the first lens element 1010 and the second lens element 1020 on the optical axis is T12, the distance between the second lens element 1020 and the third lens element 1030 on the optical axis is T23, the distance between the third lens element 1030 and the fourth lens element 1040 on the optical axis is T34, and the distance between the fourth lens element 1040 and the fifth lens element 1050 on the optical axis is T45, wherein T45 is greater than T12, T23 and T34.

< eleventh embodiment >

Referring to fig. 21 and fig. 22, fig. 21 is a schematic diagram of an image capturing apparatus according to an eleventh embodiment of the invention, and fig. 22 is a graph of spherical aberration, astigmatism and distortion of the eleventh embodiment sequentially from left to right. As shown in fig. 21, the image capturing device of the eleventh embodiment includes an image capturing lens assembly (not labeled) and an electronic photosensitive element 1180. The image capturing lens assembly includes, in order from an object side to an image side, a first lens element 1110, an aperture stop 1100, a second lens element 1120, a third lens element 1130, a fourth lens element 1140, a fifth lens element 1150, an ir-cut filter element 1160 and an image plane 1170, wherein an electro-photosensitive element 1180 is disposed on the image plane 1170 of the image capturing lens assembly, wherein the total number of the lens elements having refractive power of the image capturing lens assembly is five (1110-1150), and any two adjacent lens elements of the first lens element 1110, the second lens element 1120, the third lens element 1130, the fourth lens element 1140 and the fifth lens element 1150 have an air space on an optical axis.

The first lens element 1110 with positive refractive power has a convex object-side surface 1111 and a concave image-side surface 1112. In addition, the object-side surface 1111 and the image-side surface 1112 have at least one inflection point.

The second lens element 1120 with negative refractive power has a convex object-side surface 1121 and a concave image-side surface 1122.

The third lens element 1130 with positive refractive power has a concave object-side surface 1131 and a convex image-side surface 1132, and is both aspheric. In addition, the third lens object side surface 1131 has at least one inflection point.

The fourth lens element 1140 with negative refractive power has a concave object-side surface 1141 and a concave image-side surface 1142. In addition, the image-side surface 1142 of the fourth lens element has at least one inflection point.

The fifth lens element 1150 with negative refractive power has a concave object-side surface 1151 and a convex image-side surface 1152.

In addition, the refractive power of the first lens element 1110 is the strongest of the refractive powers of the first lens element 1110, the second lens element 1120, the third lens element 1130, the fourth lens element 1140 and the fifth lens element 1150.

The ir-cut filter 1160 is made of glass, and is disposed between the fifth lens element 1150 and the image plane 1170, and does not affect the focal length of the image capturing lens assembly.

Reference is again made to the following table twenty-one and twenty-two.

In the eleventh embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the following parameters are defined in the same way as in the first embodiment and will not be described herein.

The following data can be derived by matching the twenty-one and twenty-two tables:

in addition, as can be seen from the twenty-one table, in the eleventh embodiment, the third lens element 1130 has positive refractive power and an abbe number smaller than 30.

Moreover, as can be seen from the twenty-one table, in the eleventh embodiment, the distance between the first lens element 1110 and the second lens element 1120 on the optical axis is T12, the distance between the second lens element 1120 and the third lens element 1130 on the optical axis is T23, the distance between the third lens element 1130 and the fourth lens element 1140 on the optical axis is T34, and the distance between the fourth lens element 1140 and the fifth lens element 1150 on the optical axis is T45, wherein T45 is greater than T12, T23 and T34.

< twelfth embodiment >

Referring to fig. 23 and fig. 24, in which fig. 23 is a schematic diagram of an image capturing apparatus according to a twelfth embodiment of the disclosure, and fig. 24 is a graph of spherical aberration, astigmatism and distortion of the twelfth embodiment in order from left to right. As shown in fig. 23, the image capturing device of the twelfth embodiment includes an image capturing lens assembly (not labeled) and an electro-optic device 1280. The image capturing lens assembly includes, in order from an object side to an image side, a first lens element 1210, an aperture stop 1200, a second lens element 1220, a third lens element 1230, a fourth lens element 1240, a fifth lens element 1250, an ir-cut filter element 1260 and an image plane 1270, wherein the electro-optic device 1280 is disposed on the image plane 1270 of the image capturing lens assembly, wherein the total number of the lens elements having refractive power of the image capturing lens assembly is five (1210-1250), and any two adjacent lens elements of the first lens element 1210, the second lens element 1220, the third lens element 1230, the fourth lens element 1240 and the fifth lens element 1250 have an air gap on an optical axis.

The first lens element 1210 with positive refractive power has a convex object-side surface 1211 and a concave image-side surface 1212. In addition, the object-side surface 1211 and the image-side surface 1212 of the first lens element each have at least one inflection point.

The second lens element 1220 with negative refractive power has a convex object-side surface 1221 and a concave image-side surface 1222.

The third lens element 1230 with negative refractive power has a convex object-side surface 1231 and a concave image-side surface 1232. In addition, the object-side surface 1231 and the image-side surface 1232 of the third lens element each have at least one inflection point.

The fourth lens element 1240 with negative refractive power has a concave object-side surface 1241 and a concave image-side surface 1242. In addition, the object-side surface 1241 and the image-side surface 1242 of the fourth lens element each have at least one inflection point.

The fifth lens element 1250 with negative refractive power has a concave object-side surface 1251 and a convex image-side surface 1252.

In addition, the refractive power of the first lens element 1210 is the strongest of the refractive powers of the first lens element 1210, the second lens element 1220, the third lens element 1230, the fourth lens element 1240 and the fifth lens element 1250.

The ir-cut filter 1260 is made of glass and disposed between the fifth lens element 1250 and the image plane 1270 without affecting the focal length of the image capturing lens assembly.

Reference is again made to the twenty-three and twenty-four tables below.

In the twelfth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the following parameters are defined in the same way as in the first embodiment and will not be described herein.

The following data can be derived from twenty-three and twenty-four tables:

moreover, as can be seen from the twenty-third list, in the twelfth embodiment, the distance between the first lens element 1210 and the second lens element 1220 on the optical axis is T12, the distance between the second lens element 1220 and the third lens element 1230 on the optical axis is T23, the distance between the third lens element 1230 and the fourth lens element 1240 on the optical axis is T34, and the distance between the fourth lens element 1240 and the fifth lens element 1250 on the optical axis is T45, wherein T45 is greater than T12, T23 and T34.

< thirteenth embodiment >

Referring to fig. 25 and fig. 26, wherein fig. 25 is a schematic diagram of an image capturing device according to a thirteenth embodiment of the invention, and fig. 26 is a graph showing spherical aberration, astigmatism and distortion of the thirteenth embodiment in order from left to right. As shown in fig. 25, the image capturing device of the thirteenth embodiment includes an image capturing lens assembly (not numbered) and an electro-optic element 1380. The image capturing lens assembly includes, in order from an object side to an image side, an aperture stop 1300, a first lens element 1310, a second lens element 1320, a third lens element 1330, a fourth lens element 1340, a fifth lens element 1350, an ir-cut filter 1360 and an image plane 1370, and an electro-optic sensor 1380 is disposed on the image plane 1370, wherein the total number of the lens elements of the image capturing lens assembly having refractive power is five (1310-1350), and any two adjacent lens elements of the first lens element 1310, the second lens element 1320, the third lens element 1330, the fourth lens element 1340 and the fifth lens element 1350 have an air gap therebetween.

The first lens element 1310 with positive refractive power has a convex object-side surface 1311 and a convex image-side surface 1312.

The second lens element 1320 with negative refractive power has a concave object-side surface 1321 and a concave image-side surface 1322. In addition, the second lens object side surface 1321 has at least one inflection point.

The third lens element 1330 with positive refractive power has a concave object-side surface 1331 and a convex image-side surface 1332. In addition, the third lens object side surface 1331 has at least one inflection point.

The fourth lens element 1340 with negative refractive power has a concave object-side surface 1341 and a convex image-side surface 1342. In addition, the fourth lens element image-side surface 1342 has at least one inflection point.

The fifth lens element 1350 with negative refractive power has a concave object-side surface 1351 and a convex image-side surface 1352. In addition, the fifth lens image-side surface 1352 has at least one inflection point.

In addition, the refractive power of the first lens element 1310 is the strongest among the refractive powers of the first lens element 1310, the second lens element 1320, the third lens element 1330, the fourth lens element 1340 and the fifth lens element 1350.

The ir-cut filter 1360 is made of glass, and disposed between the fifth lens element 1350 and the image plane 1370, and does not affect the focal length of the image capturing lens assembly.

Reference is again made to the following table twenty five and table twenty six.

In the thirteenth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the following parameters are defined in the same way as in the first embodiment and will not be described herein.

The following data can be derived by matching twenty-five and twenty-six tables:

in addition, as can be seen from the twenty-fifth table, in the thirteenth embodiment, the third lens element 1330 has positive refractive power and an abbe number smaller than 30.

Moreover, as can be seen from the twenty-fifth table, in the thirteenth embodiment, the distance between the first lens 1310 and the second lens 1320 on the optical axis is T12, the distance between the second lens 1320 and the third lens 1330 on the optical axis is T23, the distance between the third lens 1330 and the fourth lens 1340 on the optical axis is T34, and the distance between the fourth lens 1340 and the fifth lens 1350 on the optical axis is T45, wherein T45 is greater than T12, T23 and T34.

< fourteenth embodiment >

Fig. 29 is a schematic view illustrating an electronic device 10 according to a fourteenth embodiment of the invention. The electronic device 10 of the fourteenth embodiment is a smart phone, the electronic device 10 includes an image capturing device 11, the image capturing device 11 includes an image capturing lens assembly (not shown) according to the present invention and an electronic photosensitive element (not shown), wherein the electronic photosensitive element is disposed on an image plane of the image capturing lens assembly, and the image capturing device 11 may further include a prism (not shown).

< fifteenth embodiment >

Fig. 30 is a schematic view illustrating an electronic device 20 according to a fifteenth embodiment of the invention. The electronic device 20 of the fifteenth embodiment is a tablet computer, the electronic device 20 includes an image capturing device 21, the image capturing device 21 includes an image capturing lens assembly (not shown) and an electronic photosensitive element (not shown) according to the present invention, wherein the electronic photosensitive element is disposed on an image plane of the image capturing lens assembly, and the image capturing device 21 may further include a prism (not shown).

< sixteenth embodiment >

Fig. 31 is a schematic view illustrating an electronic device 30 according to a sixteenth embodiment of the invention. The electronic device 30 of the sixteenth embodiment is a Head-mounted display (HMD), the electronic device 30 includes an image capturing device 31, the image capturing device 31 includes an image capturing lens assembly (not shown) and an electronic photosensitive element (not shown), wherein the electronic photosensitive element is disposed on an image plane of the image capturing lens assembly, and the image capturing device 31 may further include a prism (not shown).

Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. An image capturing lens assembly, in order from an object side to an image side, comprising: a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element, wherein the first lens element has positive refractive power, the first lens element has a convex object-side surface, the second lens element has refractive power, the third lens element has positive refractive power, the third lens element has an aspheric object-side surface and image-side surface, the fourth lens element has negative refractive power, the fourth lens element has a concave image-side surface, the fourth lens element has an aspheric object-side surface and image-side surface, the fifth lens element has negative refractive power, the fifth lens element has a concave image-side surface, and the fifth lens element has an aspheric object-side surface and image-side surface;

wherein the image capturing optical lens assembly has five total lenses, at least one of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element includes at least one inflection point, a focal length of the image capturing optical lens assembly is f, a focal length of the first lens element is f1, a focal length of the fourth lens element is f4, a radius of curvature of an object-side surface of the first lens element is R1, a radius of curvature of an image-side surface of the first lens element is R2, an axial thickness of the first lens element is CT1, an axial distance from the object-side surface of the first lens element to an imaging plane is TL, and the following conditions are satisfied:

3.4<(f/R1)-(f/R2)+((f×CT1)/(R1×R2))<7.5；

-1.0<f1/f4<0；

3.4< f/R1; and

0.75<TL/f<1.0。

2. the image capturing lens assembly of claim 1, wherein the second lens element has negative refractive power.

3. The image capturing lens assembly of claim 1, wherein the object-side surface of the fourth lens element is concave.

4. The image capturing lens assembly of claim 1, wherein the refractive index of the first lens element is N1, the refractive index of the second lens element is N2, the refractive index of the third lens element is N3, the refractive index of the fourth lens element is N4, the refractive index of the fifth lens element is N5, and the largest of N1, N2, N3, N4 and N5 is Nmax, wherein the following conditions are satisfied:

1.50<Nmax<1.70。

5. the image capturing lens assembly of claim 1, wherein at least one of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element has positive refractive power, and the abbe number of the lens element with positive refractive power is smaller than 30.

6. The image capturing lens assembly of claim 1, wherein the first lens element and the second lens element are separated by an axial distance T12, the second lens element and the third lens element are separated by an axial distance T23, the third lens element and the fourth lens element are separated by an axial distance T34, the fourth lens element and the fifth lens element are separated by an axial distance T45, and T45 is greater than T12, T23 and T34.

7. The imaging lens assembly of claim 1, wherein the focal length of the imaging lens assembly is f, the maximum image height of the imaging lens assembly is ImgH, and the following conditions are satisfied:

2.3<f/ImgH<6.0。

8. the imaging lens assembly of claim 1, wherein the diameter of the entrance pupil of the imaging lens assembly is EPD, the maximum image height of the imaging lens assembly is ImgH, which satisfies the following conditions:

0.7<EPD/ImgH<2.0。

9. the image capturing lens assembly of claim 1, wherein an air space is disposed between any two adjacent lenses of the first lens element to the fifth lens element, and the refractive power of the first lens element is strongest among the refractive powers of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element.

10. The imaging lens assembly of claim 1, wherein the focal length of the imaging lens assembly is f, the radius of curvature of the object-side surface of the first lens element is R1, the radius of curvature of the image-side surface of the first lens element is R2, and the thickness of the first lens element along the optical axis is CT1, which satisfies the following conditions:

3.7<(f/R1)-(f/R2)+((f×CT1)/(R1×R2))<6.0。

11. the image capturing lens assembly of claim 1, wherein the distance separating the third lens element and the fourth lens element is T34, and the distance separating the fourth lens element and the fifth lens element is T45, wherein the following conditions are satisfied:

T34/T45<1.2。

12. an image capturing device, comprising:

the image capturing lens assembly of claim 1; and

an electronic photosensitive element disposed on the image plane of the image capturing lens assembly.

13. An image capturing lens assembly, in order from an object side to an image side, comprising: a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element, wherein the first lens element has positive refractive power, the first lens element has a convex object-side surface, the second lens element has refractive power, the third lens element has positive refractive power, the third lens element has a convex image-side surface, both object-side and image-side surfaces of the third lens element are aspheric, the fourth lens element has negative refractive power, the fourth lens element has a concave image-side surface, both object-side and image-side surfaces of the fourth lens element are aspheric, the fifth lens element has negative refractive power, the image-side surface of the fifth lens element is concave, both object-side and image-side surfaces of the fifth lens element are aspheric;

3.4<(f/R1)-(f/R2)+((f×CT1)/(R1×R2))<7.5；

-1.0<f1/f4<0；

3.4< f/R1; and

0.75<TL/f<1.0。

14. the image capturing lens assembly of claim 13, wherein the second lens element has negative refractive power.

15. The image capturing lens assembly of claim 13, wherein the object-side surface of the fourth lens element is concave.

16. The image capturing lens assembly of claim 13, wherein the refractive index of the first lens element is N1, the refractive index of the second lens element is N2, the refractive index of the third lens element is N3, the refractive index of the fourth lens element is N4, the refractive index of the fifth lens element is N5, and the largest of N1, N2, N3, N4 and N5 is Nmax, wherein the following conditions are satisfied:

1.50<Nmax<1.70。

17. the image capturing lens assembly of claim 13, wherein at least one of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element has positive refractive power, and the abbe number of the lens element with positive refractive power is smaller than 30.

18. The image capturing lens assembly of claim 13, wherein the first lens element and the second lens element are separated by a distance T12, the second lens element and the third lens element are separated by a distance T23, the third lens element and the fourth lens element are separated by a distance T34, the fourth lens element and the fifth lens element are separated by a distance T45, and T45 is greater than T12, T23 and T34.

19. The imaging lens assembly of claim 13, wherein the focal length of the imaging lens assembly is f, the maximum image height of the imaging lens assembly is ImgH, and the following conditions are satisfied:

2.3<f/ImgH<6.0。

20. the imaging lens assembly of claim 13, wherein the entrance pupil diameter of the imaging lens assembly is EPD, the maximum image height of the imaging lens assembly is ImgH, and the following conditions are satisfied:

0.7<EPD/ImgH<2.0。

21. the image capturing lens assembly of claim 13, wherein an air space is disposed between any two adjacent lenses of the first lens element to the fifth lens element, and the refractive power of the first lens element is strongest among the refractive powers of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element.

22. The imaging lens assembly of claim 13, wherein the focal length of the imaging lens assembly is f, the radius of curvature of the object-side surface of the first lens element is R1, the radius of curvature of the image-side surface of the first lens element is R2, and the thickness of the first lens element along the optical axis is CT1, satisfying the following conditions:

3.7<(f/R1)-(f/R2)+((f×CT1)/(R1×R2))<6.0。

23. the image capturing lens assembly of claim 13, wherein the distance separating the third lens element and the fourth lens element is T34, and the distance separating the fourth lens element and the fifth lens element is T45, wherein the following conditions are satisfied:

T34/T45<1.2。

24. an image capturing device, comprising:

the image capturing lens assembly of claim 13; and

25. An image capturing lens assembly, in order from an object side to an image side, comprising: a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element, wherein the first lens element has positive refractive power, the first lens element has a convex object-side surface, the second lens element has refractive power, the third lens element has an aspheric object-side surface and image-side surface, the fourth lens element has negative refractive power, the fourth lens element has a concave image-side surface, the fourth lens element has an aspheric object-side surface and image-side surface, the fifth lens element has negative refractive power, the fifth lens element has a concave image-side surface, and the fifth lens element has an aspheric object-side surface and image-side surface;

3.4<(f/R1)-(f/R2)+((f×CT1)/(R1×R2))<7.5；

-0.22≤f1/f4<0；

3.4< f/R1; and

0.75<TL/f<1.0。

26. the image capturing lens assembly of claim 25, wherein the refractive index of the first lens element is N1, the refractive index of the second lens element is N2, the refractive index of the third lens element is N3, the refractive index of the fourth lens element is N4, the refractive index of the fifth lens element is N5, and the largest of N1, N2, N3, N4 and N5 is Nmax, wherein the following conditions are satisfied:

1.50<Nmax<1.70。

27. the image capturing lens assembly of claim 25, wherein at least one of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element has positive refractive power, and the abbe number of the lens element with positive refractive power is smaller than 30.

28. The imaging lens assembly of claim 25, wherein the focal length of the imaging lens assembly is f, the maximum image height of the imaging lens assembly is ImgH, and the following conditions are satisfied:

2.3<f/ImgH<6.0。

29. the imaging lens assembly of claim 25, wherein the entrance pupil diameter of the imaging lens assembly is EPD, the maximum image height of the imaging lens assembly is ImgH, and the following conditions are satisfied:

0.7<EPD/ImgH<2.0。

30. the image capturing lens assembly of claim 25, wherein an air space is disposed between any two adjacent lenses of the first lens element to the fifth lens element, and the refractive power of the first lens element is strongest among the refractive powers of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element.