TWI468773B - Optical image-capturing lens assembly - Google Patents

Description

Optical imaging lens

The present invention relates to an optical imaging lens; and more particularly to a miniaturized optical imaging lens for use in an electronic product.

In recent years, with the rise of portable electronic products with camera functions, the demand for miniaturized camera lenses has increased. The photosensitive element of a general imaging lens is nothing more than a Charge Coupled Device (CCD) or a Complementary Metal-Oxide Semiconductor Sensor (CMOS Sensor). Moreover, due to the advancement of the process technology, the pixel size of the photosensitive element is reduced, and the miniaturized camera lens is gradually developed in the field of high-resolution pixels. Therefore, the requirements for image quality are also increasing. The miniaturized camera lens that is traditionally used in portable electronic products mainly uses a three-piece lens structure. The lens system is a first lens with a positive refractive power and a negative refractive index from the object side to the image side. A second lens of force and a third lens of positive refractive power are shown in U.S. Patent No. 7,145,736. Due to the advancement of process technology and the trend of thinner and lighter electronic products, the size of the photosensitive element is continuously reduced, which makes the system more demanding on image quality. The conventional three-piece lens group will not be able to meet higher-order imaging. Lens module. U.S. Patent No. 7,365,920 discloses a four-piece lens assembly in which a first lens and a second lens are bonded to each other by a two-piece glass spherical mirror to form a Doublet to eliminate chromatic aberration. However, this method has its shortcomings. First, the excessive glass spherical mirror configuration makes the system freedom insufficient, and the total length of the system is not easily shortened. Secondly, the glass lens bonding process is not easy, and it is easy to form manufacturing difficulties.

The present invention provides an optical imaging lens comprising, from the object side to the image side, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens, an object side surface and an image thereof. The side surface is aspherical; and a fourth lens having a concave side on the image side surface, the object side surface and the image side surface of the fourth lens are aspherical surfaces, and the object side surface and the image side surface of the fourth lens At least one surface is provided with at least one inflection point; wherein the optical image taking lens is further provided with an aperture and an electronic photosensitive element for imaging the object, the aperture being disposed between the object and the second lens, The electronic photosensitive element is disposed at the imaging surface, and has an incident angle of 36.5 degrees with respect to the optical axis and passes through the light of the center of the aperture, and the distance between the light and the image side surface of the fourth lens is perpendicular to the optical axis of Yc1. The half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the distance from the aperture to the optical axis of the electronic photosensitive element is SL, and the object side surface of the first lens is on the optical axis of the electronic photosensitive element. The distance is TTL, which is satisfied The relationship is as follows: 0.35 < Yc1/ImgH < 0.95; and 0.70 < SL / TTL < 1.20.

In another aspect, the present invention provides an optical imaging lens comprising, from the object side to the image side, a first lens having a positive refractive power, a second lens having a negative refractive power, and a third lens. The side surface and the image side surface are all aspherical, and the third lens is made of plastic; and a fourth lens has a concave side on the image side surface, and the object side surface and the image side surface of the fourth lens are aspherical surfaces. And at least one surface of the object side surface and the image side surface of the fourth lens is provided with at least one inflection point, and the fourth lens is made of plastic; wherein the optical image taking lens is further provided with an aperture and an electronic photosensitive The component is for imaging an object, the aperture being disposed between the object and the second lens, the electronic photosensitive element being disposed at the imaging surface, having an incident angle of 36.5 degrees with respect to the optical axis and passing the light of the center of the aperture The distance between the light and the image side surface of the fourth lens is perpendicular to the optical axis of Yc1, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the object side surface of the first lens is to the electron Photosensitive element on the optical axis Distance of TTL, based satisfies the following relationship: 0.35 <Yc1 / ImgH <0.95; and 1.80mm <TTL <3.20 Mm.

In another aspect, the present invention provides an optical imaging lens comprising, from the object side to the image side, a first lens having a positive refractive power, the object side surface being a convex surface, and a second lens having a negative refractive power; a third lens, the object side surface and the image side surface are all aspherical, and the third lens is made of plastic; and a fourth lens, the image side surface is concave, the object side surface of the fourth lens and The image side surface is aspherical, and at least one of the object side surface and the image side surface of the fourth lens is provided with at least one inflection point, and the fourth lens is made of plastic; wherein the optical image lens is another An electronic photosensitive element is disposed for imaging the object, and the electronic photosensitive element is disposed at the imaging surface, and the distance from the object side surface of the first lens to the optical photosensitive element on the optical axis is TTL, which satisfies the following relationship: 1.80mm<TTL<3.20mm.

According to the lens group configuration method described above, the lens can effectively reduce the lens volume, increase the viewing angle of the system, and obtain a higher resolution.

In the optical imaging lens of the present invention, the first lens has a positive refractive power, which provides a partial refractive power required by the system, which helps to shorten the total length of the optical imaging lens. The second lens has a negative refractive power, which can effectively correct the aberration generated by the first lens having a positive refractive power, and at the same time is beneficial to correct the chromatic aberration of the system. The third lens may have a negative refractive power or a positive refractive power; when the third lens is a positive refractive power lens, it may be beneficial to distribute the refractive power of the first lens, thereby helping to reduce the sensitivity of the system; When the three lenses are a negative refractive power lens, it is more advantageous to modify the Petzval Sum of the system to make the peripheral image surface flatter. The fourth lens may have a negative refractive power or a positive refractive power; when the fourth lens is a positive refractive power lens, it may be beneficial to correct the high-order aberration of the system and improve the resolution of the optical imaging lens; the fourth lens is When a negative refractive power lens is used, the Principal Point of the optical system can be moved away from the imaging surface, which helps to shorten the total optical length of the system and promote the miniaturization of the lens.

In the optical imaging lens of the present invention, the first lens may be a lenticular lens or a crescent lens having a convex surface and a concave side surface; when the first lens is a lenticular lens, the first lens is effectively strengthened. The refractive power of the first lens is configured to further the optical The total length of the image taking lens becomes shorter; when the first lens is a convex and concave crescent lens, it is advantageous for correcting the astigmatism of the system. The image side surface of the second lens is concave, which can effectively increase the back focus of the system to ensure that the optical image capturing lens has sufficient back focus to place other components; preferably, the object side surface of the second lens Also concave. The object side surface of the third lens is a concave surface and the image side surface is a convex surface, which is advantageous for correcting astigmatism and high-order aberration of the system. The image side surface of the fourth lens is a concave surface, which can make the main point of the system away from the imaging surface, and is advantageous for shortening the optical total length of the system to promote miniaturization of the lens; wherein when the object side surface of the fourth lens is convex and When the image side surface is concave, the correction of the system astigmatism and the high-order aberration can be favored at the same time; and when the object side surface and the image side surface of the fourth lens are both concave, the main point of the optical system can be made. Farther away from the imaging surface, the total length of the lens can be shorter. In the optical imaging lens of the present invention, the aperture may be placed between the subject and the first lens or between the first lens and the second lens. By providing the positive refractive power of the first lens and placing the aperture close to the object side of the optical image capturing lens, the total length of the optical image taking lens can be effectively shortened. In addition, the above configuration can make the optical taking Like the exit pupil of the lens away from the imaging surface, the light will be incident on the photosensitive element in a near-normal incidence, which is the telecentric characteristic of the image side, and the telecentric characteristic is for the solid-state electronic photosensitive element. Photosensitive ability is extremely important, which will increase the sensitivity of the electronic photosensitive element and reduce the possibility of vignetting in the system. In addition, an inflection point can be disposed on the fourth lens to more effectively suppress the angle at which the light of the off-axis field of view is incident on the photosensitive element, and the aberration of the off-axis field of view can be further corrected. On the other hand, when the aperture is placed closer to the second lens, the characteristics of the wide angle of view can be favored, which contributes to the correction of the distortion and the Chromatic Aberration of Magnification, and Such a configuration can effectively reduce the sensitivity of the system. Therefore, in the optical imaging lens of the present invention, if the aperture is disposed between the subject and the second lens, the objective is to achieve a good balance between the telecentric characteristics and the wide angle of view.

100, 200, 300, 400, 500, 600, 700, 800, 900, 1000 ‧ ‧ aperture

110, 210, 310, 410, 510, 610, 710, 810, 910, 1010‧‧‧ first lens

111, 211, 311, 411, 511, 611, 711, 811, 911, 1011‧‧‧

112, 212, 312, 412, 512, 612, 712, 812, 912, 1012‧‧‧ image side surface

120, 220, 320, 420, 520, 620, 720, 820, 920, 1020‧‧‧ second lens

121, 221, 321, 421, 521, 621, 721, 821, 921, 1021‧‧‧

122, 222, 322, 422, 522, 622, 722, 822, 922, 1022‧‧‧ image side surface

130, 230, 330, 430, 530, 630, 730, 830, 930, 1030‧‧‧ third lens

131, 231, 331, 431, 531, 631, 731, 831, 931, 1031‧‧‧

132, 232, 332, 432, 532, 632, 732, 832, 932, 1032‧‧‧ image side surface

140, 240, 340, 440, 540, 640, 740, 840, 940, 1040‧‧‧ fourth lens

141, 241, 341, 441, 541, 641, 741, 841, 941, 1041‧‧‧

142, 242, 342, 442, 542, 642, 742, 842, 942, 1042 ‧ ‧ side surface

150, 250, 350, 450, 550, 650, 750, 850, 950, 1050 ‧ ‧ infrared filter

160, 260, 360, 460, 560, 660, 760, 860, 960, 1060‧ ‧ imaging surface

F‧‧‧ is the focal length of the overall optical imaging lens

F1‧‧‧ is the focal length of the first lens

F3‧‧‧ is the focal length of the third lens

V1‧‧‧ is the dispersion coefficient of the first lens

V2‧‧‧ is the dispersion coefficient of the second lens

R8‧‧‧ is the radius of curvature of the image side surface of the fourth lens

CT2‧‧‧ is the thickness of the second lens on the optical axis

SL‧‧‧ is the distance from the aperture to the optical axis of the electronic photosensitive element

TTL‧‧‧ is the distance from the object side surface of the first lens to the optical axis of the electronic photosensitive element

ImgH‧‧‧ is half of the diagonal length of the effective pixel area of the electronic photosensitive element

Yc1‧‧‧ is an incident angle of 36.5 degrees with respect to the optical axis and passes through the center of the aperture, light and fourth The distance from the intersection of the image side surfaces of the lens to the vertical optical axis

Yc2‧‧‧ is the angle of incidence of 37.2 degrees with respect to the optical axis and the distance from the optical axis of the aperture to the vertical optical axis of the intersection of the light and the image side surface of the fourth lens

The first A is a schematic view of an optical system of the first embodiment of the present invention.

The first B diagram is an aberration diagram of the first embodiment of the present invention.

Second A is a schematic view of an optical system of a second embodiment of the present invention.

The second B diagram is an aberration diagram of the second embodiment of the present invention.

Third A is a schematic view of an optical system of a third embodiment of the present invention.

The third B diagram is an aberration diagram of the third embodiment of the present invention.

Figure 4A is a schematic view of an optical system of a fourth embodiment of the present invention.

The fourth B diagram is an aberration diagram of the fourth embodiment of the present invention.

Figure 5A is a schematic view of an optical system of a fifth embodiment of the present invention.

Fig. 5B is a diagram showing aberrations of the fifth embodiment of the present invention.

Figure 6A is a schematic view of an optical system of a sixth embodiment of the present invention.

Fig. 6B is a diagram showing aberrations of the sixth embodiment of the present invention.

Figure 7A is a schematic view of an optical system of a seventh embodiment of the present invention.

Fig. 7B is a diagram showing aberrations of the seventh embodiment of the present invention.

Figure 8A is a schematic view of an optical system of an eighth embodiment of the present invention.

The eighth diagram B is an aberration diagram of the eighth embodiment of the present invention.

Figure 9A is a schematic view of an optical system of a ninth embodiment of the present invention.

The ninth B diagram is an aberration diagram of the ninth embodiment of the present invention.

Figure 10A is a schematic view of an optical system of a tenth embodiment of the present invention.

Fig. 10B is a diagram showing aberrations of the tenth embodiment of the present invention.

The eleventh figure is a schematic diagram for defining Yc1 by the ninth embodiment of the present invention.

Fig. 12 is a view showing the definition of Yc2 by the ninth embodiment of the present invention.

The present invention provides an optical imaging lens comprising, from the object side to the image side, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens, an object side surface and an image thereof. The side surfaces are all aspherical; and a fourth lens whose image side surface is concave The object side surface and the image side surface of the fourth lens are all aspherical surfaces, and at least one of the object side surface and the image side surface of the fourth lens is provided with at least one inflection point; wherein the optical image is The lens is further provided with an aperture and an electronic photosensitive element for imaging the object, the aperture is disposed between the object and the second lens, and the electronic photosensitive element is disposed at the imaging surface, and the optical axis is 36.5 degrees. The incident angle and the light passing through the center of the aperture, the distance between the light and the image side surface of the fourth lens is perpendicular to the optical axis of Yc1, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, the aperture The distance from the object side surface of the first lens to the optical axis on the optical axis is TTL, which satisfies the following relationship: 0.35<Yc1/ImgH<0.95; And 0.70<SL/TTL<1.20.

When the optical image taking lens satisfies the following relationship: 0.35<Yc1/ImgH<0.95, it can ensure that the optical image capturing lens has a sufficient angle of view and is favorable for suppressing the angle of the off-axis field of view light incident on the photosensitive element. And the aberration of the off-axis field of view can be further corrected. When the optical imaging lens satisfies the following relationship: 0.70<SL/TTL<1.20, it is advantageous for the optical imaging lens to achieve a good balance between the telecentric characteristic and the wide angle of view.

In the optical imaging lens of the present invention, preferably, the image side surface of the second lens is concave, which can effectively increase the back focus of the system to ensure that the optical image capturing lens has sufficient back focus to place other components. Further, preferably, the object side surface of the second lens is also a concave surface. Preferably, the object side surface of the third lens has a concave surface and the image side surface is convex, which is advantageous for correcting astigmatism and high order aberration of the system.

In the optical imaging lens of the present invention, preferably, when the third lens is a positive refractive power lens, the refractive power of the first lens can be distributed to help reduce the sensitivity of the system. Preferably, when the fourth lens is a negative refractive power lens, the Principal Point of the optical system can be moved away from the imaging surface, which is advantageous for shortening the total optical length of the system to promote miniaturization of the lens.

In the optical image taking lens of the present invention, the focal length of the entire optical image taking lens is f, the focal length of the third lens is f3, and the focal length of the first lens is f1, preferably, it is satisfied. The following relationship is: 0.70 < (f / f3) - (f / f1) < 2.00. When (f/f3)-(f/f1) satisfies the above relationship, the third lens can effectively distribute the refractive power required by the system, thereby avoiding excessive bending force of the single lens, thereby reducing the sensitivity of the system.

In the optical image pickup lens of the present invention, the focal length of the entire optical image taking lens is f, and the thickness of the second lens on the optical axis is CT2, preferably, the following relationship is satisfied: 0.15 mm < CT2 < 0.32 mm. When the CT2 satisfies the above relationship, the lens thickness of the second lens is suitable, which can reduce the manufacturing difficulty to obtain a high lens manufacturing yield, and is favorable for the moldability and homogeneity of the plastic lens during injection molding. .

In the optical image pickup lens of the present invention, the first lens has a dispersion coefficient of V1, and the second lens has a dispersion coefficient of V2, and preferably satisfies the following relationship: 28.5 < V1 - V2 < 42.0. When V1-V2 satisfies the above relationship, the correction of the chromatic aberration in the optical image taking lens is facilitated.

In the optical image pickup lens of the present invention, the image side surface curvature radius of the fourth lens is R8, and the focal length of the entire optical image taking lens is f, and preferably, the following relationship is satisfied: 0.10 < R8 / f < 0.45. When R8/f satisfies the above relationship, the main point of the optical system can be kept away from the imaging surface, which is advantageous for shortening the total optical length of the system to promote miniaturization of the lens.

In the optical imaging lens of the present invention, the optical axis is at an incident angle of 37.2 degrees with respect to the optical axis and passes through the light of the center of the aperture, and the distance between the light and the image side surface of the fourth lens is perpendicular to the optical axis of Yc2. The half of the diagonal length of the effective pixel area of the element is ImgH, and preferably, the following relationship is satisfied: 0.50 < Yc2 / ImgH < 0.95. When Yc2/ImgH satisfies the above relationship, it is ensured that the optical image taking lens has a sufficient angle of view and is advantageous for suppressing the angle at which the off-axis field of view light is incident on the photosensitive element, and can further correct the off-axis field of view. Aberration.

In the optical image pickup lens of the present invention, the distance from the object side surface of the first lens to the optical photosensitive element on the optical axis is TTL, and preferably, the following relationship is satisfied: 1.80 mm < TTL < 3.20 mm. When the TTL satisfies the above relationship, it can be ensured that the correction of the system aberration can be achieved while shortening the total length of the lens. A lens that is miniaturized and of good imaging quality; further, preferably, it satisfies the following relationship: 2.20 mm < TTL < 2.70 mm.

In another aspect, the present invention provides an optical imaging lens comprising, from the object side to the image side, a first lens having a positive refractive power, a second lens having a negative refractive power, and a third lens. The side surface and the image side surface are all aspherical, and the third lens is made of plastic; and a fourth lens has a concave side on the image side surface, and the object side surface and the image side surface of the fourth lens are aspherical surfaces. And at least one surface of the object side surface and the image side surface of the fourth lens is provided with at least one inflection point, and the fourth lens is made of plastic; wherein the optical image taking lens is further provided with an aperture and an electronic photosensitive The component is for imaging an object, the aperture being disposed between the object and the second lens, the electronic photosensitive element being disposed at the imaging surface, having an incident angle of 36.5 degrees with respect to the optical axis and passing the light of the center of the aperture The distance between the light and the image side surface of the fourth lens is perpendicular to the optical axis of Yc1, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the object side surface of the first lens is to the electron Photosensitive element on the optical axis Distance of TTL, based satisfies the following relationship: 0.35 <Yc1 / ImgH <0.95; and 1.80mm <TTL <3.20mm.

When the optical image taking lens satisfies the following relationship: 0.35<Yc1/ImgH<0.95, it can ensure that the optical image capturing lens has a sufficient angle of view and is favorable for suppressing the angle of the off-axis field of view light incident on the photosensitive element. And the aberration of the off-axis field of view can be further corrected. When the optical image taking lens satisfies the following relationship: 1.80 mm < TTL < 3.20 mm, it can ensure that the correction of the system aberration can be achieved while shortening the total length of the lens, which contributes to both miniaturization and good imaging. A quality lens; further, preferably, the following relationship is satisfied: 2.20 mm < TTL < 2.70 mm.

In the optical imaging lens of the present invention, preferably, the third lens is a positive refractive power lens, which is beneficial for distributing the refractive power of the first lens, and helps to reduce the sensitivity of the system. In the optical imaging lens of the present invention, preferably, the fourth lens is a negative refractive power lens, which can make the Principal Point of the optical system away from the imaging surface, which is beneficial to shortening the total optical length of the system to promote The lens is miniaturized.

In the optical imaging lens of the present invention, preferably, the object side surface of the first lens is a convex surface; when the first lens is a lenticular lens, the refractive power configuration of the first lens can be effectively enhanced, thereby further The total length of the optical imaging lens becomes shorter. In the optical imaging lens of the present invention, when the first lens is a convex-concave crescent lens, it is advantageous for the astigmatism of the correction system. Preferably, the image side surface of the second lens is concave, which can effectively increase the back focus of the system to ensure that the optical image capturing lens has sufficient back focus to place other components; further, preferably, the first The object side surface of the two lenses is also concave. In the optical imaging lens of the present invention, preferably, the object side surface of the third lens has a concave surface and the image side surface is convex, which is advantageous for correcting astigmatism and high-order aberration of the system. Preferably, the image side surface of the fourth lens is concave, so that the main point of the system is away from the imaging surface, which is advantageous for shortening the optical total length of the system to promote miniaturization of the lens; further, preferably, the fourth The object side surface of the lens is a concave surface.

In the optical image taking lens of the present invention, the focal length of the entire optical image taking lens is f, the focal length of the third lens is f3, and the focal length of the first lens is f1, preferably, the following relationship is satisfied: 0.70<( f/f3)-(f/f1)<2.00. When (f/f3)-(f/f1) satisfies the above relationship, the third lens can effectively distribute the refractive power required by the system, thereby avoiding excessive bending force of the single lens, thereby reducing the sensitivity of the system.

In the optical imaging lens of the present invention, the first lens has an Abbe Number of V1, and the second lens has a dispersion coefficient of V2, preferably, the following relationship is satisfied: 28.5<V1-V2<42.0 . When V1-V2 satisfies the above relationship, the correction of the chromatic aberration in the optical image taking lens is facilitated.

In the optical imaging lens of the present invention, half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the distance from the object side surface of the first lens to the optical photosensitive element on the optical axis is TTL. The thickness of the two lenses on the optical axis is CT2, and preferably, the following relationship is satisfied: 2.50 < TTL / (ImgH × CT2) ^1/2 < 4.35. When the TTL/(ImgH×CT2) ^1/2 satisfies the above relationship, it is advantageous to maintain the miniaturization of the optical image taking lens to be mounted on a thin and portable electronic product.

In still another aspect, the present invention provides an optical imaging lens, which is sequentially from the object side to the image side. The first lens having a positive refractive power, the object side surface is a convex surface; a second lens having a negative refractive power; and a third lens, the object side surface and the image side surface are all aspherical surfaces, and the first lens The material of the third lens is plastic; and the fourth lens has a concave surface on the image side surface, and the object side surface and the image side surface of the fourth lens are aspherical surfaces, and the object side surface and the image side surface of the fourth lens At least one surface is provided with at least one inflection point, and the fourth lens is made of plastic; wherein the optical image taking lens is further provided with an electronic photosensitive element for imaging the object, and the electronic photosensitive element is disposed at the imaging surface The distance from the object side surface of the first lens to the optical photosensitive element on the optical axis is TTL, which satisfies the following relationship: 1.80 mm < TTL < 3.20 mm.

When the optical image taking lens satisfies the following relationship: 1.80 mm < TTL < 3.20 mm, it can ensure that the correction of the system aberration can be achieved while shortening the total length of the lens, which contributes to both miniaturization and good imaging. A quality lens; further, preferably, the following relationship is satisfied: 2.20 mm < TTL < 2.70 mm.

In the optical imaging lens of the present invention, preferably, the image side surface of the second lens is concave, which can effectively increase the back focus of the system to ensure that the optical image capturing lens has sufficient back focus to place other components. Further, preferably, the object side surface of the second lens is also a concave surface. Preferably, the object side surface of the third lens has a concave surface and the image side surface is convex, which is advantageous for correcting astigmatism and high order aberration of the system.

In the optical imaging lens of the present invention, preferably, the third lens is a positive refractive power lens, which is beneficial for distributing the refractive power of the first lens, and helps to reduce the sensitivity of the system. Preferably, the fourth lens is a negative refractive power lens, which can make the Principal Point of the optical system away from the imaging surface, which is beneficial to shorten the total optical length of the system to promote miniaturization of the lens.

In the optical image taking lens of the present invention, the focal length of the entire optical image taking lens is f, the focal length of the third lens is f3, and the focal length of the first lens is f1, preferably, the following relationship is satisfied: 0.70<( f/f3)-(f/f1)<2.00. When (f/f3)-(f/f1) satisfies the above relationship, the third lens can effectively distribute the refractive power required by the system, thereby avoiding excessive bending force of the single lens, thereby reducing the sensitivity of the system.

In the optical image pickup lens of the present invention, the first lens has a dispersion coefficient of V1, and the second lens has a dispersion coefficient of V2, and preferably satisfies the following relationship: 28.5 < V1 - V2 < 42.0. When V1-V2 satisfies the above relationship, the correction of the chromatic aberration in the optical image taking lens is facilitated.

In the optical imaging lens of the present invention, the optical axis is at an incident angle of 36.5 degrees with respect to the optical axis and passes through the light of the center of the aperture, and the distance between the light and the image side surface of the fourth lens is perpendicular to the optical axis of Yc1. The half of the diagonal length of the effective pixel area of the element is ImgH, and preferably, the following relationship is satisfied: 0.35 < Yc1/Imgh < 0.95. When Yc1/Imgh satisfies the above relationship, it can ensure that the optical image taking lens has a sufficient angle of view and is favorable for suppressing the angle at which the off-axis field of view light is incident on the photosensitive element, and can further correct the off-axis field of view. Aberration.

In the optical imaging lens of the present invention, half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the distance from the object side surface of the first lens to the optical photosensitive element on the optical axis is TTL. The thickness of the two lenses on the optical axis is CT2, and preferably, the following relationship is satisfied: 2.50 < TTL / (ImgH × CT2) ^1/2 < 4.35. When the TTL/(ImgH×CT2) ^1/2 satisfies the above relationship, it is advantageous to maintain the miniaturization of the optical image taking lens to be mounted on a thin and portable electronic product.

In the optical imaging lens of the present invention, the material of the lens can be glass or plastic. If the material of the lens is glass, the degree of freedom of the system's refractive power can be increased. If the lens material is plastic, the production cost can be effectively reduced. In addition, an aspherical surface can be disposed on the mirror surface, and the aspherical surface can be easily formed into a shape other than the spherical surface, and more control variables are obtained to reduce the aberration and thereby reduce the number of lenses used, thereby effectively reducing the optical pickup of the present invention. Like the total length of the lens.

In the optical imaging lens of the present invention, if the surface of the lens is convex, it indicates that the surface of the lens is convex at the paraxial shape; if the surface of the lens is concave, it indicates that the surface of the lens is concave at the paraxial axis.

The optical imaging lens of the present invention will be described in detail by the following specific embodiments in conjunction with the drawings.

<First Embodiment>

For a schematic diagram of the optical system of the first embodiment of the present invention, refer to the first A diagram. For the aberration curve of the first embodiment, refer to the first diagram B. The optical image taking lens of the first embodiment is mainly composed of four lenses, and includes, from the object side to the image side, a first lens (110) having a positive refractive power, and the object side surface (111) is a convex surface and an image. The side surface (112) is a convex surface and is made of plastic. The object side surface (111) and the image side surface (112) of the first lens (110) are aspherical surfaces; a second lens having a negative refractive power (120) The object side surface (121) is a concave surface and the image side surface (122) is a concave surface, and the material thereof is plastic. The object side surface (121) and the image side surface (122) of the second lens (120) are both non- a third lens (130) having a positive refractive power, wherein the object side surface (131) is a concave surface and the image side surface (132) is a convex surface, and the material is plastic, and the object side surface of the third lens (130) (131) and the image side surface (132) are both aspherical surfaces; and a fourth lens (140) having a negative refractive power, the object side surface (141) is a concave surface and the image side surface (142) is a concave surface, and the material thereof The plastic object, the object side surface (141) and the image side surface (142) of the fourth lens (140) are both aspherical, and the object side surface (141) and the image side surface (142) of the fourth lens (140). At least one surface is provided There is one less inflection point; wherein the optical image taking lens is further provided with an aperture (100) between the first lens (110) and the second lens (120); and an infrared filter is included An IR-filter (150) is disposed between the image side surface (142) of the fourth lens (140) and an imaging surface (160); the infrared filter (150) is made of a material The glass does not affect the focal length of the optical image taking lens of the present invention.

The equation for the above aspheric curve is expressed as follows: Where: X: the point on the aspherical surface from the optical axis Y, the relative height of the tangent to the apex on the aspherical optical axis; Y: the distance between the point on the aspheric curve and the optical axis; k: the tapered surface Coefficient; Ai: the i-th order aspheric coefficient.

In the optical image taking lens of the first embodiment, the focal length of the entire optical image taking lens is f, and the relational expression is f = 1.70 (mm).

In the optical imaging lens of the first embodiment, the aperture value (f-number) of the overall optical image taking lens is Fno, and the relational expression is Fno=2.08.

In the optical imaging lens of the first embodiment, half of the maximum viewing angle in the overall optical image taking lens is HFOV, and the relationship is HFOV = 37.4 (degrees).

In the optical imaging lens of the first embodiment, the first lens (110) has a dispersion coefficient of V1, and the second lens (120) has a dispersion coefficient of V2, and the relationship is V1-V2=32.5.

In the optical imaging lens of the first embodiment, the image side surface (142) of the fourth lens (140) has a radius of curvature of R8, and the focal length of the entire optical image taking lens is f, and the relationship is: R8/f=0.26.

In the optical imaging lens of the first embodiment, the focal length of the integral optical image taking lens is f, the focal length of the third lens (130) is f3, and the focal length of the first lens (110) is f1, and the relationship is: ( f/f3)-(f/f1)=1.47.

In the optical imaging lens of the first embodiment, the thickness of the second lens (120) on the optical axis is CT2, and the relationship is: CT2 = 0.300 (mm).

In the optical imaging lens of the first embodiment, the optical image capturing lens is further provided with an electronic photosensitive element on the imaging surface (160) for imaging the object thereon, and the object side surface of the first lens (110) ( 111) The distance from the electronic photosensitive element to the optical axis is TTL, and the relationship is: TTL=2.54 (mm).

In the optical imaging lens of the first embodiment, the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the object side surface (111) of the first lens (110) is on the optical axis of the electronic photosensitive element. The distance is TTL, and the thickness of the second lens (120) on the optical axis is CT2, and the relationship is: TTL / (ImgH × CT2) ^1/2 = 4.09.

In the optical imaging lens of the first embodiment, the aperture (100) to the electronic photosensitive element The distance on the optical axis is SL, and the distance from the object side surface (111) of the first lens (110) to the optical photosensitive element on the optical axis is TTL, and the relation is: SL/TTL=0.87.

In the optical imaging lens of the first embodiment, the optical axis is at an incident angle of 36.5 degrees with respect to the optical axis and the light passing through the center of the aperture (100) is perpendicular to the intersection of the image side surface (142) of the fourth lens (140). The distance of the optical axis is Yc1, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the relationship is: Yc1/ImgH=0.75.

In the optical imaging lens of the first embodiment, the light is at an incident angle of 37.2 degrees with respect to the optical axis and passes through the light of the center of the aperture (100), which is perpendicular to the intersection of the image side surface (142) of the fourth lens (140). The distance of the optical axis is Yc2, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the relationship is: Yc2/ImgH=0.77.

The detailed optical data of the first embodiment is as shown in the last table of the embodiment of the present specification, and the aspherical data is as shown in the last table of the embodiment of the present specification, wherein the unit of curvature radius, thickness and focal length is mm (mm). HFOV is defined as half of the maximum viewing angle.

<Second embodiment>

For a schematic diagram of the optical system of the second embodiment of the present invention, refer to the second A diagram. For the aberration curve of the second embodiment, refer to the second diagram B. The optical image taking lens of the second embodiment is mainly composed of four lenses, and includes, from the object side to the image side, a first lens (210) having a positive refractive power, and the object side surface (211) is a convex surface and an image. The side surface (212) is a convex surface and is made of plastic. The object side surface (211) and the image side surface (212) of the first lens (210) are aspherical surfaces; and a second lens having a negative refractive power (220) The object side surface (221) is a concave surface and the image side surface (222) is a concave surface, and the material thereof is plastic. The object side surface (221) and the image side surface (222) of the second lens (220) are both non- a third lens (230) having a positive refractive power, wherein the object side surface (231) is a concave surface and the image side surface (232) is a convex surface, and the material is plastic, and the object side surface of the third lens (230) (231) and the image side surface (232) are both aspherical surfaces; and a fourth lens (240) having a negative refractive power, the object side surface (241) is a concave surface and an image The side surface (242) is a concave surface and is made of plastic. The object side surface (241) and the image side surface (242) of the fourth lens (240) are aspherical, and the object side of the fourth lens (240) At least one surface of the surface (241) and the image side surface (242) is provided with at least one inflection point; wherein the optical image taking lens is further provided with an aperture (200) placed on the object and the first lens (210) Between the object side surfaces (211); further comprising an infrared filter (250) disposed between the image side surface (242) of the fourth lens (240) and an imaging surface (260); The material of the infrared filter (250) is glass and it does not affect the focal length of the optical image taking lens of the present invention.

The expression of the aspheric curve equation of the second embodiment is the same as that of the first embodiment.

In the optical imaging lens of the second embodiment, the focal length of the entire optical image taking lens is f, and the relational expression is f = 1.70 (mm).

In the optical imaging lens of the second embodiment, the aperture value of the overall optical image taking lens is Fno, and the relational expression is Fno=2.08.

In the optical imaging lens of the second embodiment, half of the maximum viewing angle in the overall optical image taking lens is HFOV, and the relational expression is: HFOV = 37.5 (degrees).

In the optical imaging lens of the second embodiment, the first lens (210) has a dispersion coefficient of V1, and the second lens (220) has a dispersion coefficient of V2, and the relationship is V1-V2=32.5.

In the optical imaging lens of the second embodiment, the image side surface (242) of the fourth lens (240) has a radius of curvature of R8, and the focal length of the entire optical image taking lens is f, and the relationship is: R8/f=0.26.

In the optical imaging lens of the second embodiment, the focal length of the entire optical imaging lens is f, the focal length of the third lens (230) is f3, and the focal length of the first lens (210) is f1, and the relationship is: ( f/f3)-(f/f1)=1.00.

In the optical imaging lens of the second embodiment, the thickness of the second lens (220) on the optical axis is CT2, and the relationship is: CT2 = 0.280 (mm).

In the optical imaging lens of the second embodiment, the optical image capturing lens is further provided with an electronic photosensitive element on the imaging surface (260) for imaging the object thereon, the first lens (210) The distance from the object side surface (211) to the optical photosensitive element on the optical axis is TTL, and the relationship is: TTL=2.43 (mm).

In the optical imaging lens of the second embodiment, the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, the object side surface (211) of the first lens (210) to the optical photosensitive element on the optical axis The distance is TTL, and the thickness of the second lens (220) on the optical axis is CT2, and the relationship is: TTL / (ImgH × CT2) ^1/2 = 4.05.

In the optical imaging lens of the second embodiment, the distance from the aperture (200) to the optical pickup element on the optical axis is SL, the object side surface (211) of the first lens (210) to the electronic photosensitive element is in the light. The distance on the axis is TTL, and the relationship is: SL/TTL=0.98.

In the second embodiment, the optical imaging lens has an incident angle of 36.5 degrees with respect to the optical axis and passes through the light of the center of the aperture (200), which is perpendicular to the intersection of the image side surface (242) of the fourth lens (240). The distance of the optical axis is Yc1, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the relationship is: Yc1/ImgH=0.72.

In the second embodiment, the optical imaging lens has an incident angle of 37.2 degrees with respect to the optical axis and passes through the light of the center of the aperture (200), which is perpendicular to the intersection of the image side surface (242) of the fourth lens (240). The distance of the optical axis is Yc2, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the relationship is: Yc2/ImgH=0.75.

The detailed optical data of the second embodiment is as shown in the last table of the embodiment of the present specification, and the aspherical data is as shown in the last table of the embodiment of the present specification, wherein the unit of curvature radius, thickness and focal length is mm (mm). HFOV is defined as half of the maximum viewing angle.

<Third embodiment>

For a schematic diagram of the optical system of the third embodiment of the present invention, refer to the third A diagram. For the aberration curve of the third embodiment, refer to the third diagram B. The optical image taking lens of the third embodiment is mainly composed of four lenses, and includes, from the object side to the image side, a first lens (310) having a positive refractive power, and the object side surface (311) is a convex surface and an image. The side surface (312) is a convex surface and is made of plastic. The object side surface (311) and the image side surface (312) of the first lens (310) are aspherical surfaces; a second lens (320) having a negative refractive power, wherein the object side surface (321) is a convex surface and the image side surface (322) is a concave surface, and the material is plastic, and the object side surface of the second lens (320) (321) And the image side surface (322) are aspherical surfaces; a third lens (330) having a positive refractive power, the object side surface (331) is a concave surface and the image side surface (332) is a convex surface, and the material is plastic. The object side surface (331) and the image side surface (332) of the third lens (330) are both aspherical; and a fourth lens (340) having a negative refractive power, the object side surface (341) is concave and The image side surface (342) is a concave surface and is made of plastic. The object side surface (341) and the image side surface (342) of the fourth lens (340) are aspherical, and the fourth lens (340) is At least one of the side surface (341) and the image side surface (342) is provided with at least one inflection point; wherein the optical image taking lens is further provided with an aperture (300) disposed on the first lens (310) Between the second lens (320); further comprising an infrared filter (350) disposed between the image side surface (342) of the fourth lens (340) and an imaging surface (360); the infrared filter The material of the filter (350) is The glass does not affect the focal length of the optical image taking lens of the present invention.

The expression of the aspheric curve equation of the third embodiment is the same as that of the first embodiment.

In the optical imaging lens of the third embodiment, the focal length of the overall optical image taking lens is f, and the relational expression is f = 1.99 (mm).

In the optical imaging lens of the third embodiment, the aperture value of the overall optical image taking lens is Fno, and the relational expression is Fno=2.80.

In the optical imaging lens of the third embodiment, half of the maximum viewing angle in the overall optical image taking lens is HFOV, and the relational expression is: HFOV = 37.1 (degrees).

In the optical imaging lens of the third embodiment, the first lens (310) has a dispersion coefficient of V1, and the second lens (320) has a dispersion coefficient of V2, and the relationship is V1-V2=34.5.

In the optical imaging lens of the third embodiment, the image side surface (342) of the fourth lens (340) has a radius of curvature R8, and the focal length of the entire optical image taking lens is f, and the relational expression is: R8/f=0.37.

In the optical imaging lens of the third embodiment, the focal length of the entire optical image taking lens is f, the focal length of the third lens (330) is f3, and the focal length of the first lens (310) is f1, and the relationship is: ( f/f3)-(f/f1)=1.24.

In the optical imaging lens of the third embodiment, the thickness of the second lens (320) on the optical axis is CT2, and the relationship is: CT2 = 0.254 (mm).

In the optical imaging lens of the third embodiment, the optical image capturing lens is further provided with an electronic photosensitive element on the imaging surface (360) for imaging the object thereon, and the object side surface of the first lens (310) ( 311) The distance from the electronic photosensitive element to the optical axis is TTL, and the relationship is: TTL=2.77 (mm).

In the optical imaging lens of the third embodiment, the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, the object side surface (311) of the first lens (310) is on the optical axis of the electronic photosensitive element. The distance of the second lens (320) on the optical axis is CT2, and the relationship is: TTL / (ImgH × CT2) ^1/2 = 4.49.

In the optical imaging lens of the third embodiment, the distance from the aperture (300) to the optical pickup element on the optical axis is SL, the object side surface (311) of the first lens (310) to the electronic photosensitive element is in the light. The distance on the axis is TTL, and the relationship is: SL/TTL=0.83.

In the third embodiment, the optical imaging lens has an incident angle of 36.5 degrees with respect to the optical axis and passes through the light of the center of the aperture (300), which is perpendicular to the intersection of the image side surface (342) of the fourth lens (340). The distance of the optical axis is Yc1, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the relationship is: Yc1/ImgH=0.72.

The detailed optical data of the third embodiment is as shown in the last table of the embodiment of the present specification, and the aspherical data is as shown in the last part of the embodiment of the present specification, Table 6A and Table 6B, wherein the unit of curvature radius, thickness and focal length. For mm (mm), HFOV is defined as half of the maximum viewing angle.

<Fourth embodiment>

For a schematic diagram of the optical system of the fourth embodiment of the present invention, refer to the fourth A diagram. For the aberration curve of the fourth embodiment, refer to the fourth panel B. The optical image taking lens of the fourth embodiment is mainly composed of four lenses, and includes from the object side to the image side in order: a first lens (410) having a positive refractive power, wherein the object side surface (411) is a convex surface and the image side surface (412) is a convex surface, and the material is plastic, and the object side surface of the first lens (410) (411) And the image side surface (412) are aspherical surfaces; a second lens (420) having a negative refractive power, the object side surface (421) is a convex surface and the image side surface (422) is a concave surface, and the material is plastic. The object side surface (421) and the image side surface (422) of the second lens (420) are all aspherical surfaces; a third lens (430) having a positive refractive power, the object side surface (431) is a concave surface and an image The side surface (432) is a convex surface and is made of plastic. The object side surface (431) and the image side surface (432) of the third lens (430) are aspherical surfaces; and a fourth lens having a positive refractive power ( 440), the object side surface (441) is a convex surface and the image side surface (442) is a concave surface, and the material thereof is plastic, and the object side surface (441) and the image side surface (442) of the fourth lens (440) are both An aspheric surface, and at least one of the object side surface (441) and the image side surface (442) of the fourth lens (440) is provided with at least one inflection point; wherein the optical image taking lens is further provided with an aperture ( 400) placed in the subject and Between the first lens (410); further comprising an infrared filter (450) disposed between the image side surface (442) of the fourth lens (440) and an imaging surface (460); the infrared filter The material of the filter (450) is glass and it does not affect the focal length of the optical image taking lens of the present invention.

The expression of the aspheric curve equation of the fourth embodiment is the same as that of the first embodiment.

In the optical imaging lens of the fourth embodiment, the focal length of the entire optical image taking lens is f, and the relational expression is f = 2.23 (mm).

In the optical imaging lens of the fourth embodiment, the aperture value of the overall optical image taking lens is Fno, and the relational expression is Fno=2.82.

In the optical imaging lens of the fourth embodiment, half of the maximum viewing angle in the overall optical image taking lens is HFOV, and the relational expression is: HFOV = 37.2 (degrees).

In the optical imaging lens of the fourth embodiment, the first lens (410) has a dispersion coefficient of V1, and the second lens (420) has a dispersion coefficient of V2, and the relationship is V1-V2=32.5.

In the optical imaging lens of the fourth embodiment, the image side surface (442) of the fourth lens (440) has a radius of curvature R8, and the focal length of the entire optical image taking lens is f, and the relational expression is: R8/f=0.36.

In the optical imaging lens of the fourth embodiment, the focal length of the entire optical image taking lens is f, the focal length of the third lens (430) is f3, and the focal length of the first lens (410) is f1, and the relationship is: ( f/f3)-(f/f1)=-1.07.

In the optical imaging lens of the fourth embodiment, the thickness of the second lens (420) on the optical axis is CT2, and the relationship is: CT2 = 0.250 (mm).

In the optical imaging lens of the fourth embodiment, the optical image capturing lens is further provided with an electronic photosensitive element on the imaging surface (460) for imaging the object thereon, and the object side surface of the first lens (410) ( 411) The distance from the electronic photosensitive element to the optical axis is TTL, and the relationship is: TTL=2.80 (mm).

In the optical imaging lens of the fourth embodiment, the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, the object side surface (411) of the first lens (410) to the optical photosensitive element is on the optical axis. The distance of the second lens (420) on the optical axis is CT2, and the relationship is: TTL / (ImgH × CT2) ^1/2 = 4.30.

In the optical imaging lens of the fourth embodiment, the distance from the aperture (400) to the optical pickup element on the optical axis is SL, the object side surface (411) of the first lens (410) to the electronic photosensitive element is in the light. The distance on the axis is TTL, and the relationship is: SL/TTL=0.99.

In the optical imaging lens of the fourth embodiment, the angle of incidence is 36.5 degrees with respect to the optical axis and the light passing through the center of the aperture (400) is perpendicular to the intersection of the image side surface (442) of the fourth lens (440). The distance of the optical axis is Yc1, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the relationship is: Yc1/ImgH=0.76.

In the fourth embodiment, the optical imaging lens has an incident angle of 37.2 degrees with respect to the optical axis and passes through the light of the center of the aperture (400), which is perpendicular to the intersection of the image side surface (442) of the fourth lens (440). The distance of the optical axis is Yc2, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the relationship is: Yc2/ImgH=0.78.

Detailed optical data of the fourth embodiment, such as the last table of the embodiment of the present specification As shown in Fig. 7, the aspherical data is as shown in the last table of the embodiment of the present specification, in which the unit of curvature radius, thickness and focal length is mm (mm), and HFOV is defined as half of the maximum viewing angle.

<Fifth Embodiment>

For a schematic diagram of the optical system of the fifth embodiment of the present invention, refer to FIG. 5A. For the aberration curve of the fifth embodiment, refer to FIG. The optical image taking lens of the fifth embodiment is mainly composed of four lenses, and includes, from the object side to the image side, a first lens (510) having a positive refractive power, and the object side surface (511) is a convex surface and an image. The side surface (512) is a convex surface and is made of plastic. The object side surface (511) and the image side surface (512) of the first lens (510) are aspherical surfaces; and a second lens having a negative refractive power (520) The object side surface (521) is a concave surface and the image side surface (522) is a concave surface, and the material is plastic. The object side surface (521) and the image side surface (522) of the second lens (520) are both non- a third lens (530) having a positive refractive power, wherein the object side surface (531) is a concave surface and the image side surface (532) is a convex surface, and the material is plastic, and the object side surface of the third lens (530) (531) and the image side surface (532) are both aspherical surfaces; and a fourth lens (540) having a negative refractive power, the object side surface (541) is a convex surface and the image side surface (542) is a concave surface, and the material thereof The plastic object, the object side surface (541) and the image side surface (542) of the fourth lens (540) are both aspherical, and the object side surface (541) and the image side surface of the fourth lens (540) (542) At least one surface is provided One less inflection point; wherein the optical image taking lens is further provided with an aperture (500) between the object and the first lens (510); and an infrared filter (550) is placed The image side surface (542) of the fourth lens (540) is interposed between an imaging surface (560); the infrared filter (550) is made of glass and does not affect the focal length of the optical imaging lens of the present invention. .

The expression of the aspheric curve equation of the fifth embodiment is the same as that of the first embodiment.

In the optical imaging lens of the fifth embodiment, the focal length of the entire optical imaging lens is f, Its relationship is: f = 1.66 (mm).

In the optical imaging lens of the fifth embodiment, the aperture value of the overall optical image taking lens is Fno, and the relational expression is Fno=2.40.

In the optical imaging lens of the fifth embodiment, half of the maximum viewing angle in the overall optical image taking lens is HFOV, and the relational expression is: HFOV = 37.9 (degrees).

In the optical imaging lens of the fifth embodiment, the first lens (510) has a dispersion coefficient of V1, and the second lens (520) has a dispersion coefficient of V2, and the relationship is V1-V2=34.5.

In the optical imaging lens of the fifth embodiment, the image side surface (542) of the fourth lens (540) has a radius of curvature of R8, and the focal length of the entire optical image taking lens is f, and the relational expression is: R8/f=0.36.

In the optical imaging lens of the fifth embodiment, the focal length of the entire optical image taking lens is f, the focal length of the third lens (530) is f3, and the focal length of the first lens (510) is f1, and the relationship is: ( f/f3)-(f/f1)=-0.47.

In the optical imaging lens of the fifth embodiment, the thickness of the second lens (520) on the optical axis is CT2, and the relationship is: CT2 = 0.245 (mm).

In the optical imaging lens of the fifth embodiment, the optical image capturing lens is further provided with an electronic photosensitive element on the imaging surface (560) for imaging the object thereon, and the object side surface of the first lens (510) ( 511) The distance from the electronic photosensitive element to the optical axis is TTL, and the relationship is: TTL=2.25 (mm).

In the optical imaging lens of the fifth embodiment, the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the object side surface (511) of the first lens (510) is on the optical axis of the electronic photosensitive element. The distance is TTL, and the thickness of the second lens (520) on the optical axis is CT2, and the relationship is: TTL / (ImgH × CT2) ^1/2 = 4.01.

In the optical imaging lens of the fifth embodiment, the distance from the aperture (500) to the optical pickup element on the optical axis is SL, the object side surface (511) of the first lens (510) to the electronic photosensitive element is in the light. The distance on the axis is TTL, and the relationship is: SL/TTL=0.98.

In the optical imaging lens of the fifth embodiment, the incident angle of the optical axis is 36.5 degrees with respect to the optical axis and the light passing through the center of the aperture (500), the light and the image side surface of the fourth lens (540) The intersection of (542) has a vertical optical axis distance of Yc1, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the relationship is: Yc1/ImgH=0.65.

In the optical imaging lens of the fifth embodiment, the light is at an incident angle of 37.2 degrees with respect to the optical axis and the light passing through the center of the aperture (500) is perpendicular to the intersection of the image side surface (542) of the fourth lens (540). The distance of the optical axis is Yc2, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the relationship is: Yc2/ImgH=0.67.

The detailed optical data of the fifth embodiment is as shown in the last table IX of the embodiment of the present specification, and the aspherical data is as shown in the last part of the embodiment of the present specification, Tables A and D, where the radius of curvature, thickness and focal length are expressed. For mm (mm), HFOV is defined as half of the maximum viewing angle.

<Sixth embodiment>

For a schematic diagram of the optical system of the sixth embodiment of the present invention, refer to FIG. 6A. For the aberration curve of the sixth embodiment, refer to FIG. The optical image taking lens of the sixth embodiment is mainly composed of four lenses, and includes, from the object side to the image side, a first lens (610) having a positive refractive power, and the object side surface (611) is a convex surface and an image. The side surface (612) is a convex surface and is made of plastic. The object side surface (611) and the image side surface (612) of the first lens (610) are aspherical surfaces; and a second lens having a negative refractive power (620) The object side surface (621) is a concave surface and the image side surface (622) is a concave surface, and the material thereof is plastic. The object side surface (621) and the image side surface (622) of the second lens (620) are both non- a spherical surface; a third lens (630) having a positive refractive power, wherein the object side surface (631) is a concave surface and the image side surface (632) is a convex surface, and the material is plastic, and the object side surface of the third lens (630) (631) and the image side surface (632) are both aspherical surfaces; and a fourth lens (640) having a negative refractive power, the object side surface (641) is a concave surface and the image side surface (642) is a concave surface, and the material thereof For the plastic, the object side surface (641) and the image side surface (642) of the fourth lens (640) are both aspherical, and the object side surface (641) and the image side surface of the fourth lens (640) (642) At least one surface is provided At least one inflection point; wherein the optical lens is provided with a further aperture (600) disposed in the first lens (610) is disposed between the second lens (620) and an infrared filter (650) disposed on the image side surface (642) of the fourth lens (640) and an imaging surface (660) The infrared filter (650) is made of glass and does not affect the focal length of the optical imaging lens of the present invention.

The expression of the aspheric curve equation of the sixth embodiment is the same as that of the first embodiment.

In the optical imaging lens of the sixth embodiment, the focal length of the entire optical image taking lens is f, and the relational expression is f = 2.06 (mm).

In the optical imaging lens of the sixth embodiment, the aperture value of the overall optical image taking lens is Fno, and the relational expression is Fno=2.45.

In the optical imaging lens of the sixth embodiment, half of the maximum viewing angle in the overall optical image taking lens is HFOV, and the relational expression is HFOV = 33.0 (degrees).

In the optical imaging lens of the sixth embodiment, the first lens (610) has a dispersion coefficient of V1, and the second lens (620) has a dispersion coefficient of V2, and the relationship is V1-V2=32.5.

In the optical imaging lens of the sixth embodiment, the image side surface (642) of the fourth lens (640) has a radius of curvature R8, and the focal length of the entire optical image taking lens is f, and the relational expression is: R8/f=0.37.

In the optical imaging lens of the sixth embodiment, the focal length of the entire optical image taking lens is f, the focal length of the first lens (610) is f1, and the focal length of the third lens (630) is f3, and the relationship is: ( f/f3)-(f/f1)=1.06.

In the optical imaging lens of the sixth embodiment, the thickness of the second lens (620) on the optical axis is CT2, and the relationship is: CT2 = 0.300 (mm).

In the optical imaging lens of the sixth embodiment, the optical image capturing lens is further provided with an electronic photosensitive element on the imaging surface (660) for imaging the object thereon, and the object side surface of the first lens (610) ( 611) The distance from the electronic photosensitive element to the optical axis is TTL, and the relationship is: TTL=3.14 (mm).

In the optical imaging lens of the sixth embodiment, the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, the object side surface (611) of the first lens (610) to the optical photosensitive element is on the optical axis. The distance is TTL, and the thickness of the second lens (620) on the optical axis is CT2, and the relationship is: TTL / (ImgH × CT2) ^1/2 = 4.99.

In the optical imaging lens of the sixth embodiment, the distance from the aperture (600) to the optical pickup element on the optical axis is SL, the object side surface (611) of the first lens (610) to the electronic photosensitive element is in the light. The distance on the axis is TTL, and the relationship is: SL/TTL=0.81.

The detailed optical data of the sixth embodiment is as shown in the last table XI of the embodiment of the present specification, and the aspherical data is as shown in the last table of the embodiment of the present specification, wherein the unit of curvature radius, thickness and focal length is mm ( In millimeters, HFOV is defined as half of the maximum viewing angle.

<Seventh embodiment>

For a schematic diagram of the optical system of the seventh embodiment of the present invention, refer to FIG. 7A, and for the aberration curve of the seventh embodiment, refer to FIG. The optical image taking lens of the seventh embodiment is mainly composed of four lenses, and includes, from the object side to the image side, a first lens (710) having a positive refractive power, and the object side surface (711) is a convex surface and an image. The side surface (712) is a convex surface and is made of plastic. The object side surface (711) and the image side surface (712) of the first lens (710) are aspherical surfaces; and a second lens having a negative refractive power (720) The object side surface (721) is a convex surface and the image side surface (722) is a concave surface, and the material thereof is plastic, and the object side surface (721) and the image side surface (722) of the second lens (720) are both non- a third lens (730) having a negative refractive power, wherein the object side surface (731) is a concave surface and the image side surface (732) is a convex surface, and the material is plastic, and the object side surface of the third lens (730) (731) and the image side surface (732) are both aspherical surfaces; and a fourth lens (740) having a positive refractive power, the object side surface (741) is a convex surface and the image side surface (742) is a concave surface, and the material thereof The plastic object, the object side surface (741) and the image side surface (742) of the fourth lens (740) are both aspherical, and the object side surface (741) and the image side surface (742) of the fourth lens (740). At least one surface is provided At least one inflection point; wherein the optical lens is provided between the other subject to the first lens (710) has an aperture (700) is placed; Further comprising an infrared filter (750) disposed between the image side surface (742) of the fourth lens (740) and an imaging surface (760); the material of the infrared filter (750) It is glass and it does not affect the focal length of the optical image taking lens of the present invention.

The expression of the aspheric curve equation of the seventh embodiment is the same as that of the first embodiment.

In the optical image pickup lens of the seventh embodiment, the focal length of the entire optical image taking lens is f, and the relational expression is f = 2.30 (mm).

In the optical imaging lens of the seventh embodiment, the aperture value of the overall optical image taking lens is Fno, and the relational expression is Fno=2.85.

In the optical imaging lens of the seventh embodiment, half of the maximum viewing angle in the overall optical image taking lens is HFOV, and the relational expression is: HFOV = 37.0 (degrees).

In the optical imaging lens of the seventh embodiment, the first lens (710) has a dispersion coefficient of V1, and the second lens (720) has a dispersion coefficient of V2, and the relationship is V1-V2=34.5.

In the optical imaging lens of the seventh embodiment, the image side surface (742) of the fourth lens (740) has a radius of curvature R8, and the focal length of the entire optical image taking lens is f, and the relational expression is: R8/f=0.39.

In the optical imaging lens of the seventh embodiment, the focal length of the entire optical image taking lens is f, the focal length of the third lens (730) is f3, and the focal length of the first lens (710) is f1, and the relationship is: ( f/f3)-(f/f1)=-1.41.

In the optical imaging lens of the seventh embodiment, the thickness of the second lens (720) on the optical axis is CT2, and the relationship is: CT2 = 0.253 (mm).

In the optical imaging lens of the seventh embodiment, the optical image capturing lens is further provided with an electronic photosensitive element on the imaging surface (760) for imaging the object thereon, and the object side surface of the first lens (710) ( 711) The distance from the electronic photosensitive element to the optical axis is TTL, and the relationship is: TTL=2.74 (mm).

In the optical imaging lens of the seventh embodiment, the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, the object side surface (711) of the first lens (710) to the optical pickup element on the optical axis The distance is TTL, and the thickness of the second lens (720) on the optical axis is CT2, and the relationship is: TTL / (ImgH × CT2) ^1/2 = 4.12.

In the optical imaging lens of the seventh embodiment, the distance from the aperture (700) to the optical pickup element on the optical axis is SL, the object side surface (711) of the first lens (710) to the electronic photosensitive element is in the light. The distance on the axis is TTL, and the relationship is: SL/TTL=0.98.

In the optical imaging lens of the seventh embodiment, the light is incident at an angle of incidence of 36.5 degrees with respect to the optical axis and passes through the center of the aperture (700), and the light is perpendicular to the intersection of the image side surface (742) of the fourth lens (740). The distance of the optical axis is Yc1, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the relationship is: Yc1/ImgH=0.75.

The detailed optical data of the seventh embodiment is as shown in the last table of the embodiment of the present specification, and the aspherical data is as shown in the last table of the embodiment of the present specification, wherein the unit of curvature radius, thickness and focal length is mm ( In millimeters, HFOV is defined as half of the maximum viewing angle.

<Eighth Embodiment>

For a schematic diagram of the optical system of the eighth embodiment of the present invention, refer to FIG. 8A. For the aberration curve of the eighth embodiment, refer to FIG. The optical image taking lens of the eighth embodiment is mainly composed of four lenses, and includes, from the object side to the image side, a first lens (810) having a positive refractive power, and the object side surface (811) is a convex surface and an image. The side surface (812) is a concave surface and is made of plastic. The object side surface (811) and the image side surface (812) of the first lens (810) are aspherical surfaces; and a second lens having a negative refractive power (820) The object side surface (821) is a concave surface and the image side surface (822) is a concave surface, and the material is plastic. The object side surface (821) and the image side surface (822) of the second lens (820) are both non- a spherical surface; a third lens (830) having a positive refractive power, wherein the object side surface (831) is a concave surface and the image side surface (832) is a convex surface, and the material is plastic, and the object side surface of the third lens (830) (831) and the image side surface (832) are both aspherical surfaces; and a fourth lens (840) having a negative refractive power, the object side surface (841) is a concave surface and the image side surface (842) is a concave surface, and the material thereof For the plastic, the object side surface (841) and the image side surface (842) of the fourth lens (840) are both aspherical, and the object side surface of the fourth lens (840) At least one surface of the (841) and the image side surface (842) is provided with at least one inflection point; wherein the optical image taking lens is further provided with an aperture (800) disposed on the first lens (810) and the second Between the lenses (820); further comprising an infrared filter (850) disposed between the image side surface (842) of the fourth lens (840) and an imaging surface (860); the infrared filter The material of the light sheet (850) is glass and it does not affect the focal length of the optical image taking lens of the present invention.

The expression of the aspheric curve equation of the eighth embodiment is the same as that of the first embodiment.

In the optical image pickup lens of the eighth embodiment, the focal length of the entire optical image taking lens is f, and the relational expression is f = 2.42 (mm).

In the optical image pickup lens of the eighth embodiment, the aperture value of the entire optical image taking lens is Fno, and the relational expression is Fno=2.60.

In the optical imaging lens of the eighth embodiment, half of the maximum viewing angle in the overall optical image taking lens is HFOV, and the relational expression is: HFOV = 38.5 (degrees).

In the optical imaging lens of the eighth embodiment, the first lens (810) has a dispersion coefficient of V1, and the second lens (820) has a dispersion coefficient of V2, and the relationship is V1-V2=32.1.

In the optical imaging lens of the eighth embodiment, the image side surface (842) of the fourth lens (840) has a radius of curvature R8, and the focal length of the entire optical image taking lens is f, and the relational expression is: R8/f=0.49.

In the optical imaging lens of the eighth embodiment, the focal length of the entire optical image taking lens is f, the focal length of the third lens (830) is f3, and the focal length of the first lens (810) is f1, and the relationship is: ( f/f3)-(f/f1)=0.40.

In the optical imaging lens of the eighth embodiment, the thickness of the second lens (820) on the optical axis is CT2, and the relationship is: CT2 = 0.250 (mm).

In the optical imaging lens of the eighth embodiment, the optical image capturing lens is further provided with an electronic photosensitive element on the imaging surface (860) for imaging the object thereon, and the object side surface of the first lens (810) ( 811) The distance from the electronic photosensitive element to the optical axis is TTL, and the relationship is: TTL=2.83 (mm).

In the optical imaging lens of the eighth embodiment, the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, the object side surface (811) of the first lens (810) to the optical photosensitive element on the optical axis The distance is TTL, and the thickness of the second lens (820) on the optical axis is CT2, and the relationship is: TTL / (ImgH × CT2) ^1/2 = 4.08.

In the optical imaging lens of the eighth embodiment, the distance from the aperture (800) to the optical pickup element on the optical axis is SL, the object side surface (811) of the first lens (810) to the electronic photosensitive element is in the light. The distance on the axis is TTL, and the relationship is: SL/TTL=0.82.

In the eighth embodiment, the optical imaging lens has an incident angle of 36.5 degrees with respect to the optical axis and passes through the light of the center of the aperture (800), which is perpendicular to the intersection of the image side surface (842) of the fourth lens (840). The distance of the optical axis is Yc1, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the relationship is: Yc1/ImgH=0.70.

In the eighth embodiment, the optical imaging lens has an incident angle of 37.2 degrees with respect to the optical axis and passes through the light of the center of the aperture (800), which is perpendicular to the intersection of the image side surface (842) of the fourth lens (840). The distance of the optical axis is Yc2, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the relationship is: Yc2/Imgh=0.71.

The detailed optical data of the eighth embodiment is as shown in the last table fifteenth of the embodiment of the present specification, and the aspherical data is as shown in the last table of the embodiment of the present specification, in which the unit of curvature radius, thickness and focal length is mm ( In millimeters, HFOV is defined as half of the maximum viewing angle.

<Ninth embodiment>

For a schematic diagram of the optical system of the ninth embodiment of the present invention, refer to the ninth A diagram, and the aberration curve of the ninth embodiment is referred to the ninth diagram. The optical image taking lens of the ninth embodiment is mainly composed of four lenses, and includes, from the object side to the image side, a first lens (910) having a positive refractive power, and the object side surface (911) is a convex surface and an image. The side surface (912) is a convex surface and is made of plastic. The object side surface (911) and the image side surface (912) of the first lens (910) are aspherical surfaces; and a second lens having a negative refractive power (920) The object side surface (921) is a concave surface and the image side surface (922) is a concave surface, and the material thereof is plastic, and the object side surface of the second lens (920) (921) and the image side surface (922) are all aspherical surfaces; a third lens (930) having a positive refractive power, the object side surface (931) is a concave surface and the image side surface (932) is a convex surface, and the material thereof is Plastic, the object side surface (931) and the image side surface (932) of the third lens (930) are all aspherical; and a fourth lens (940) having a negative refractive power, the object side surface (941) is The convex surface and the image side surface (942) are concave surfaces and are made of plastic. The object side surface (941) and the image side surface (942) of the fourth lens (940) are both aspherical, and the fourth lens (940) At least one of the object side surface (941) and the image side surface (942) is provided with at least one inflection point; wherein the optical image taking lens is further provided with an aperture (900) disposed on the first lens (910) Between the second lens (920) and an infrared filter (950) disposed between the image side surface (942) of the fourth lens (940) and an imaging surface (960); The material of the infrared filter (950) is glass and it does not affect the focal length of the optical image pickup lens of the present invention.

The expression of the aspheric curve equation of the ninth embodiment is the same as that of the first embodiment.

In the optical image pickup lens of the ninth embodiment, the focal length of the entire optical image taking lens is f, and the relational expression is f = 1.71 (mm).

In the optical image pickup lens of the ninth embodiment, the aperture value of the entire optical image taking lens is Fno, and the relational expression is Fno=2.40.

In the optical imaging lens of the ninth embodiment, half of the maximum viewing angle in the overall optical image taking lens is HFOV, and the relational expression is: HFOV = 37.2 (degrees).

In the optical imaging lens of the ninth embodiment, the first lens (910) has a dispersion coefficient of V1, and the second lens (920) has a dispersion coefficient of V2, and the relationship is V1-V2=32.5.

In the optical imaging lens of the ninth embodiment, the image side surface (942) of the fourth lens (940) has a radius of curvature of R8, and the focal length of the entire optical image taking lens is f, and the relational expression is: R8/f=0.24.

In the optical imaging lens of the ninth embodiment, the focal length of the entire optical image taking lens is f, the focal length of the third lens (930) is f3, and the focal length of the first lens (910) is f1, and the relationship The formula is: (f/f3)-(f/f1)=1.55.

In the optical imaging lens of the ninth embodiment, the thickness of the second lens (920) on the optical axis is CT2, and the relationship is: CT2 = 0.266 (mm).

In the optical imaging lens of the ninth embodiment, the optical image capturing lens is further provided with an electronic photosensitive element on the imaging surface (960) for imaging the object thereon, and the object side surface of the first lens (910) ( 911) The distance from the electronic photosensitive element to the optical axis is TTL, and the relationship is: TTL=2.53 (mm).

In the optical imaging lens of the ninth embodiment, the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, the object side surface (911) of the first lens (910) to the optical photosensitive element on the optical axis The distance of the second lens (920) on the optical axis is CT2, and the relationship is: TTL / (ImgH × CT2) ^1/2 = 4.33.

In the optical imaging lens of the ninth embodiment, the distance from the aperture (900) to the optical pickup element on the optical axis is SL, the object side surface (911) of the first lens (910) to the electronic photosensitive element is in the light. The distance on the axis is TTL, and the relationship is: SL/TTL=0.85.

In the optical image pickup lens of the ninth embodiment, the light incident at an angle of incidence of 36.5 degrees with respect to the optical axis and passing through the center of the aperture (900) is perpendicular to the intersection of the image side surface (942) of the fourth lens (940). The distance of the optical axis is Yc1, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the relationship is: Yc1/Imgh=0.72.

In the ninth embodiment, the optical imaging lens has an incident angle of 37.2 degrees with respect to the optical axis and passes through the light of the center of the aperture (900), which is perpendicular to the intersection of the image side surface (942) of the fourth lens (940). The distance of the optical axis is Yc2, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the relationship is: Yc2/Imgh=0.75.

The detailed optical data of the ninth embodiment is as shown in the last table of the embodiment of the present specification, and the aspherical data is as shown in the last table of the embodiment of the present specification, in which the unit of curvature radius, thickness and focal length is mm ( In millimeters, HFOV is defined as half of the maximum viewing angle.

<Tenth embodiment>

Referring to the tenth A diagram, the tenth embodiment of the optical system of the tenth embodiment of the present invention For the aberration curve of the example, please refer to the tenth B chart. The optical image taking lens of the tenth embodiment is mainly composed of four lenses, and includes, from the object side to the image side, a first lens (1010) having a positive refractive power, and the object side surface (1011) is a convex surface and an image. The side surface (1012) is a convex surface and is made of plastic. The object side surface (1011) and the image side surface (1012) of the first lens (1010) are aspherical surfaces; and a second lens having a negative refractive power (1020) The object side surface (1021) is a concave surface and the image side surface (1022) is a concave surface, and the material is plastic. The object side surface (1021) and the image side surface (1022) of the second lens (1020) are both non- a spherical surface; a third lens (1030) having a positive refractive power, wherein the object side surface (1031) is a concave surface and the image side surface (1032) is a convex surface, and the material is plastic, and the object side surface of the third lens (1030) (1031) and the image side surface (1032) are both aspherical surfaces; and a fourth lens (1040) having a negative refractive power, the object side surface (1041) is a convex surface and the image side surface (1042) is a concave surface, and the material thereof The object side surface (1041) and the image side surface (1042) of the fourth lens (1040) are both aspherical, and the object side surface (1041) and the image side surface (1042) of the fourth lens (1040) are plastic. )in The lesser one surface is provided with at least one inflection point; wherein the optical image taking lens is further provided with an aperture (1000) disposed between the object and the first lens (1010); and an infrared filtering filter is further included The sheet (1050) is disposed between the image side surface (1042) of the fourth lens (1040) and an image forming surface (1060); the infrared filter filter (1050) is made of glass and does not affect the present invention. The focal length of the optical pickup lens.

The expression of the aspheric curve equation of the tenth embodiment is the same as that of the first embodiment.

In the optical image pickup lens of the tenth embodiment, the focal length of the entire optical image taking lens is f, and the relational expression is f = 2.03 (mm).

In the optical image pickup lens of the tenth embodiment, the aperture value of the entire optical image taking lens is Fno, and the relational expression is Fno=2.47.

In the optical image capturing lens of the tenth embodiment, the maximum viewing angle of the entire optical image capturing lens Half is HFOV and its relationship is: HFOV = 37.5 (degrees).

In the optical imaging lens of the tenth embodiment, the first lens (1010) has a dispersion coefficient of V1, and the second lens (1020) has a dispersion coefficient of V2, and the relationship is V1-V2=32.1.

In the optical imaging lens of the tenth embodiment, the image side surface (1042) of the fourth lens (1040) has a radius of curvature of R8, and the focal length of the entire optical image taking lens is f, and the relational expression is: R8/f=0.25.

In the optical imaging lens of the tenth embodiment, the focal length of the entire optical image taking lens is f, the focal length of the third lens (1030) is f3, and the focal length of the first lens (1010) is f1, and the relationship is: ( f/f3)-(f/f1)=0.33.

In the optical imaging lens of the tenth embodiment, the thickness of the second lens (1020) on the optical axis is CT2, and the relationship is: CT2 = 0.280 (mm).

In the optical imaging lens of the tenth embodiment, the optical image capturing lens is further provided with an electronic photosensitive element on the imaging surface (1060) for imaging the object thereon, and the object side surface of the first lens (1010) ( 1011) The distance from the electronic photosensitive element to the optical axis is TTL, and the relationship is: TTL=2.47 (mm).

In the optical imaging lens of the tenth embodiment, the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, the object side surface (1011) of the first lens (1010) to the optical photosensitive element on the optical axis The distance is TTL, and the thickness of the second lens (1020) on the optical axis is CT2, and the relationship is: TTL / (ImgH × CT2) ^1/2 = 3.76.

In the optical imaging lens of the tenth embodiment, the distance from the aperture (1000) to the optical pickup element on the optical axis is SL, the object side surface (1011) of the first lens (1010) to the electronic photosensitive element is in the light. The distance on the axis is TTL, and the relationship is: SL/TTL=0.97.

In the optical imaging lens of the tenth embodiment, the light is incident at an angle of incidence of 36.5 degrees with respect to the optical axis and passes through the center of the aperture (1000), and the light is perpendicular to the intersection of the image side surface (1042) of the fourth lens (1040). The distance of the optical axis is Yc1, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the relationship is: Yc1/ImgH=0.66.

In the optical imaging lens of the tenth embodiment, the incident angle is 37.2 degrees with respect to the optical axis. The light passing through the center of the aperture (1000), the distance between the light and the image side surface (1042) of the fourth lens (1040) is perpendicular to the optical axis of Yc2, and the effective area of the electronic photosensitive element is diagonally long. Half is ImgH and its relationship is: Yc2/ImgH=0.69.

The detailed optical data of the tenth embodiment is as shown in the last table of the embodiment of the present specification, and the aspherical data is as shown in the last table of the embodiment of the present specification, shown in Tables 20A and 20B, wherein the radius of curvature, the thickness and The unit of focal length is mm (mm) and HFOV is defined as half of the maximum viewing angle.

11 is a schematic diagram of Yc1 defined by the ninth embodiment of the present invention, wherein the light beam and the fourth lens (940) are at an incident angle of 36.5 degrees with respect to the optical axis and passing through the center of the aperture (900). The intersection of the image side surface (942) has a distance of Yc1 from the vertical optical axis.

Figure 12 is a schematic diagram of Yc2 defined by the ninth embodiment of the present invention, wherein the light is incident with an angle of incidence of 37.2 degrees with respect to the optical axis and passes through the center of the aperture (900), the light and the fourth lens (940) The intersection of the image side surface (942) has a vertical optical axis distance of Yc2.

Tables 1 to 20B show different numerical value change tables of the optical imaging lens embodiment of the present invention. However, the numerical values of the various embodiments of the present invention are experimentally obtained. Even if different values are used, the products of the same structure should belong to the present invention. The scope of the invention is to be construed as illustrative and not restrictive. Table 21 is a numerical data corresponding to the correlation of the present invention for each embodiment.

100‧‧‧ aperture

110‧‧‧first lens

111‧‧‧Side side surface

112‧‧‧ image side surface

120‧‧‧second lens

121‧‧‧Side side surface

122‧‧‧ image side surface

130‧‧‧ third lens

131‧‧‧ object side surface

132‧‧‧Image side surface

140‧‧‧Fourth lens

141‧‧‧ object side surface

142‧‧‧ image side surface

150‧‧‧Infrared filter

160‧‧‧ imaging surface

Claims (9)

An optical imaging lens comprising: a first lens having a positive refractive power, a convex surface on the object side surface; a second lens having a negative refractive power; and a first refractive power The third lens has an object side surface and an image side surface which are all aspherical surfaces, and the third lens is made of plastic; and a fourth lens whose image side surface is concave, and the object side surface and the image side of the fourth lens The surface is aspherical, and at least one of the object side surface and the image side surface of the fourth lens is provided with at least one inflection point, and the fourth lens is made of plastic; wherein the optical image lens is further provided with a The electronic photosensitive element is formed for imaging the object, and the electronic photosensitive element is disposed at the imaging surface, and the distance from the object side surface of the first lens to the optical photosensitive element on the optical axis is TTL, which satisfies the following relationship: 1.80 mm <TTL<3.20mm. The optical imaging lens according to claim 1, wherein the image side surface of the second lens is a concave surface, and the object side surface of the third lens has a concave surface and the image side surface is a convex surface. The optical imaging lens of claim 2, wherein the fourth lens has a negative refractive power. The optical imaging lens of claim 3, wherein the focal length of the overall optical image taking lens is f, the focal length of the third lens is f3, and the focal length of the first lens is f1, which satisfies the following relationship: 0.70 < (f / f3) - (f / f1) < 2.00. The optical imaging lens of claim 3, wherein the first lens has a dispersion coefficient of V1 and the second lens has a dispersion coefficient of V2, which satisfies the following relationship: 28.5 < V1 - V2 < 42.0. The optical imaging lens of claim 3, wherein the optical image taking lens further comprises an aperture having an incident angle of 36.5 degrees with respect to the optical axis and passing the light The light at the center of the circle, the distance between the light and the image side surface of the fourth lens is perpendicular to the optical axis of Yc1, and the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, which satisfies the following relationship: 0.35 <Yc1/ImgH<0.95. The optical imaging lens of claim 3, wherein the half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and the object side surface of the first lens is on the optical axis of the electronic photosensitive element. The distance is TTL, and the thickness of the second lens on the optical axis is CT2, which satisfies the following relationship: 2.50 < TTL / (ImgH × CT2) ^1/2 < 4.35. The optical imaging lens of claim 3, wherein the distance from the object side surface of the first lens to the optical photosensitive element on the optical axis is TTL, which satisfies the following relationship: 2.20 mm < TTL < 2.70 Mm. The optical imaging lens of claim 3, wherein the object side surface of the second lens is a concave surface.