CN109960005A - Pick-up lens and electronic device - Google Patents

Abstract

The invention discloses a camera lens and an electronic device. The imaging lens includes a plurality of refractive lenses and an infrared cut filter sequentially arranged along an optical axis of the imaging lens. At least two of the plurality of lenses have positive power and at least one of the plurality of lenses has negative power. The camera lens satisfies the conditional formula: 0.75≤TTL/F≤1.25; where F is the effective focal length of the camera lens, and TTL is the axial distance from the outermost object side of the camera lens to the imaging surface of the camera lens. Through the above design, the imaging lens of the embodiment of the present invention has the advantages of high resolution and ultra-thin type, and can be used as a telephoto lens.

Description

Camera lens and electronic device

technical field

The present invention relates to optical imaging technology, in particular to a camera lens and an electronic device.

Background technique

The advent of small mobile devices such as smartphones and tablets has led to an increasing demand for high-resolution, slimmer cameras for integration in these devices. However, due to the limitations of conventional camera technology, small cameras generally have lower resolution or image quality than can be achieved with larger cameras. If a compact camera is expected to achieve high resolution, it is necessary to use a photosensitive element with a small pixel size and an ultra-thin, high-resolution imaging lens system. Advances in technology have resulted in a reduction in the pixel size of photosensitive elements, but the demand for ultra-thin, high-resolution imaging lens systems continues to increase.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide an imaging lens and an electronic device.

The imaging lens of the embodiment of the present invention includes a plurality of refractive lenses and an infrared cut filter arranged in sequence along the optical axis of the imaging lens, at least two of the plurality of lenses have positive refractive power, and a plurality of the lenses have a positive refractive power. At least one of the lenses has negative refractive power, and the imaging lens satisfies the conditional expression:

0.75≤TTL/F≤1.25;

Wherein, F is the effective focal length of the imaging lens, and TTL is the axial distance from the outermost object side of the imaging lens to the imaging surface of the imaging lens.

Through the above design, the imaging lens of the embodiment of the present invention has the advantages of high resolution and ultra-thin type, and can be used as a telephoto lens.

In certain embodiments, the plurality of said lenses, in order from the object side to the image side along the optical axis, include:

a first lens having positive optical power;

a second lens having positive optical power;

a third lens with negative refractive power;

a fourth lens having positive optical power; and

Fifth lens with negative power.

In the imaging lens of the embodiment of the present invention, due to the mixed arrangement of a plurality of lenses with positive refractive power and negative refractive power, the requirements of the imaging lens for high resolution and ultra-thinning are met, and the imaging lens can be guaranteed to have better performance. image quality.

In some embodiments, the camera lens satisfies the conditional formula:

-2.7≤f5/F≤-0.2;

Wherein, f5 is the focal length of the fifth lens.

Satisfying the above conditional formula makes the fifth lens have a relatively suitable refractive power to match the configuration of the overall refractive power of the imaging lens, and is conducive to correcting the aberrations and astigmatism generated by the first lens to the fourth lens, improving the camera Resolution of the lens.

In certain embodiments, the plurality of said lenses, in order from the object side to the image side along the optical axis, include:

a first lens having positive optical power;

a second lens having positive optical power;

a third lens with negative refractive power;

a fourth lens with negative refractive power;

a fifth lens having positive optical power; and

A sixth lens with negative power.

In the imaging lens of the embodiment of the present invention, due to the mixed arrangement of a plurality of lenses with positive refractive power and negative refractive power, the requirements of the imaging lens for high resolution and ultra-thinning are met, and the imaging lens can be guaranteed to have better performance. image quality.

In some embodiments, the camera lens satisfies the conditional formula:

-2.7≤f6/F≤-0.2;

Wherein, f6 is the focal length of the sixth lens.

Satisfying the above conditional formula makes the sixth lens have a relatively suitable refractive power to match the configuration of the overall refractive power of the imaging lens, and is beneficial to correct the aberration and astigmatism generated by the first lens to the fifth lens, and improve the imaging Resolution of the lens.

In some embodiments, the camera lens satisfies the conditional formula:

2.0≤FNO≤10;

Wherein, FNO is the focal ratio of the imaging lens.

The imaging lens of the embodiment of the present invention can adjust the focal ratio in the range of 2.0 to 10.0, so that the aberration can be well corrected, and further meet the requirement of high imaging quality.

In some embodiments, the camera lens satisfies the conditional formula:

0.3≤f1/F≤2.0;

Wherein, f1 is the focal length of the first lens.

Satisfying the above conditional formula, by reasonably allocating the optical power of the first lens, it is beneficial to shorten the optical path of the imaging lens, thereby reducing the total length of the imaging lens, and realizing the ultra-thinning of the imaging lens.

In some embodiments, the camera lens satisfies the conditional formula:

-0.9≤f3/F≤-0.2;

Wherein, f3 is the focal length of the third lens.

Satisfying the above conditional formula makes the third lens have a relatively suitable refractive power to match the configuration of the overall refractive power of the imaging lens, so that the sensitivity is low, and it is beneficial to correct the aberration generated by the first lens and the second lens. .

The electronic device according to the embodiment of the present invention includes:

image sensor; and

In the imaging lens according to any one of the above embodiments, the imaging lens is aligned with the image sensor.

Through the above design, the imaging lens of the electronic device according to the embodiment of the present invention has the advantages of high resolution and ultra-thin type, and can be used as a telephoto lens.

In certain embodiments, the electronic device satisfies the conditional formula:

1.5≤TTL/IMA≤3.1;

Wherein, IMA is the diagonal distance of the effective image sensing area of the image sensor.

When TTL/IMA<1.5, it is difficult to correct various aberrations, especially field curvature and distortion aberration; when TTL/IMA>3.1, the total length of the camera lens is too long, resulting in the overall enlargement of the camera lens. Satisfying the above conditional expressions, various aberrations can be corrected well, and ultra-thinning of the imaging lens can be achieved.

Additional aspects and advantages of embodiments of the present invention will be set forth, in part, from the following description, and in part will become apparent from the following description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will be apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

1 is a schematic structural diagram of an imaging lens according to a first embodiment of the present invention;

2 is a schematic structural diagram of an imaging lens according to a second embodiment of the present invention;

3 is a schematic structural diagram of an imaging lens according to a third embodiment of the present invention;

4 is a schematic structural diagram of an imaging lens according to a fourth embodiment of the present invention;

5 is a schematic structural diagram of an imaging lens according to a fifth embodiment of the present invention;

Fig. 6 is the aberration diagram (mm) of the imaging lens in Fig. 1;

Fig. 7 is the aberration diagram (mm) of the imaging lens in Fig. 2;

Fig. 8 is the aberration diagram (mm) of the imaging lens in Fig. 3;

Fig. 9 is the aberration diagram (mm) of the imaging lens in Fig. 4;

Fig. 10 is the aberration diagram (mm) of the imaging lens in Fig. 5;

FIG. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc., or The positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined as "first", "second" may expressly or implicitly include one or more of said features. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection, electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level less than the second feature.

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present disclosure may repeat reference numerals and/or reference letters in different instances for the purpose of simplicity and clarity and not in itself indicative of a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Please refer to FIG. 1 to FIG. 5 together. The imaging lens 10 includes a plurality of refractive lenses and an infrared cut filter L7 that are sequentially arranged along the optical axis of the imaging lens 10 . At least two of the plurality of lenses have positive power and at least one of the plurality of lenses has negative power. The camera lens 10 satisfies the conditional expression:

0.75≤TTL/F≤1.25;

Wherein, F is the effective focal length of the imaging lens 10 , and TTL is the axial distance from the outermost object side of the imaging lens 10 to the imaging surface S15 of the imaging lens 10 .

That is to say, TTL/F can be any value in the range of [0.75, 1.25], for example, the value can be 0.75, 0.8, 0.85, 0.9, 0.95, 1, 1.05, 1.1, 1.15, 1.2, 1.25, etc. .

Through the above design, the imaging lens 10 of the embodiment of the present invention has the advantages of high resolution and ultra-thin type, and can be used as a telephoto lens.

Referring to FIG. 1 and FIG. 2 , in some embodiments, the plurality of lenses include in sequence along the optical axis from the object side to the image side: a first lens L1 with positive refractive power, a second lens with positive refractive power L2, a third lens L3 having negative refractive power, a fourth lens L4 having positive refractive power, and a fifth lens L5 having negative refractive power.

The first lens L1 has an object side S1 and an image side S2, the second lens L2 has an object side S3 and an image side S4, the third lens L3 has an object side S5 and an image side S6, and the fourth lens L4 has an object side S7 and an image side S8, the fifth lens L5 has an object side surface S9 and an image side surface S10. In this embodiment, the outermost object side surface of the imaging lens 10 is the object side surface S1 of the first lens L1.

In the imaging lens 10 of the embodiment of the present invention, due to the mixed arrangement of a plurality of lenses with positive refractive power and negative refractive power, the requirements of the imaging lens 10 for high resolution and ultra-thinning are satisfied, and the imaging lens 10 can be guaranteed to have better image quality.

Please refer to FIG. 1 and FIG. 2, in some embodiments, the camera lens 10 further includes an aperture stop STO, and the aperture stop STO can be arranged on the surface of any lens, or before the first lens L1, or It is arranged between any two lenses, or between the fifth lens L5 and the infrared cut filter L7. For example, in FIG. 1, the aperture stop STO is provided on the object side surface S1 of the first lens L1. In FIG. 2, the aperture stop STO is provided on the image side surface S6 of the third lens L3.

When the imaging lens 10 is used for imaging, the light emitted or reflected by the object OBJ enters the imaging lens 10 from the object side direction, and passes through the first lens L1, the second lens L2, the third lens L3, and the fourth lens L4 in sequence , the fifth lens L5, and the infrared cut filter L7 with the object side S13 and the image side S14, and finally converge on the imaging surface S15.

Referring to FIG. 1 and FIG. 2 , in some embodiments, the plurality of lenses include in sequence along the optical axis from the object side to the image side: a first lens L1 with positive refractive power, a second lens with positive refractive power L2, a third lens L3 having negative refractive power, a fourth lens L4 having positive refractive power, and a fifth lens L5 having negative refractive power. The camera lens 10 satisfies the conditional expression:

-2.7≤f5/F≤-0.2;

Wherein, f5 is the focal length of the fifth lens L5.

That is to say, f5/F can be any value in the range of [-2.7, -0.2], for example, the value can be -2.7, -2.5, -2.3, -2.1, -1.9, -1.7, -1.5 , -1.3, -1.1, -0.9, -0.7, -0.5, -0.3, -0.2, etc.

Satisfying the above conditional formula makes the fifth lens L5 have a relatively suitable refractive power to match the configuration of the overall refractive power of the imaging lens 10, and is conducive to correcting the aberrations and images generated by the first lens L1 to the fourth lens L4. to increase the resolution of the camera lens 10 .

Referring to FIG. 3 to FIG. 5 , in some embodiments, the plurality of lenses include in sequence along the optical axis from the object side to the image side: a first lens L1 with positive refractive power, a second lens with positive refractive power L2, a third lens L3 having negative power, a fourth lens L4 having negative power, a fifth lens L5 having positive power, and a sixth lens L6 having negative power.

The first lens L1 has an object side S1 and an image side S2, the second lens L2 has an object side S3 and an image side S4, the third lens L3 has an object side S5 and an image side S6, and the fourth lens L4 has an object side S7 and an image side S8, the fifth lens L5 has an object side S9 and an image side S10, and the sixth lens L6 has an object side S11 and an image side S12. In this embodiment, the outermost object side surface of the imaging lens 10 is the object side surface S1 of the first lens L1.

In the imaging lens 10 of the embodiment of the present invention, due to the mixed arrangement of a plurality of lenses with positive refractive power and negative refractive power, the requirements of the imaging lens 10 for high resolution and ultra-thinning are satisfied, and the imaging lens 10 can be guaranteed to have better image quality.

Referring to FIGS. 3 to 5 , in some embodiments, the camera lens 10 further includes an aperture stop STO. The aperture stop STO can be set on the surface of any lens, or set before the first lens L1, or set between any two lenses, or set between the sixth lens L6 and the infrared cut filter L7 . For example, in FIGS. 3 and 4 , the aperture stop STO is provided on the object side surface S1 of the first lens L1 . In FIG. 5, the aperture stop STO is provided on the object side surface S3 of the second lens L2.

When the imaging lens 10 is used for imaging, the light emitted or reflected by the object OBJ enters the imaging lens 10 from the object side direction, and passes through the first lens L1, the second lens L2, the third lens L3, and the fourth lens L4 in sequence , the fifth lens L5, the sixth lens L6, and the infrared cut filter L7 with the object side S13 and the image side S14, and finally converge on the imaging plane S15.

Referring to FIG. 3 to FIG. 5 , in some embodiments, the plurality of lenses include in sequence along the optical axis from the object side to the image side: a first lens L1 with positive refractive power, a second lens with positive refractive power L2, a third lens L3 having negative power, a fourth lens L4 having negative power, a fifth lens L5 having positive power, and a sixth lens L6 having negative power. The camera lens 10 satisfies the conditional expression:

-2.7≤f6/F≤-0.2;

Wherein, f6 is the focal length of the sixth lens L6.

That is to say, f6/F can be any value within the range of [-2.7, -0.2], for example, the value can be -2.7, -2.5, -2.3, -2.1, -1.9, -1.7, -1.5 , -1.3, -1.1, -0.9, -0.7, -0.5, -0.3, -0.2, etc.

Satisfying the above conditional formula makes the sixth lens L6 have a relatively suitable refractive power to match the configuration of the overall refractive power of the imaging lens 10, and is conducive to correcting the aberrations and images generated by the first lens L1 to the fifth lens L5 to increase the resolution of the camera lens 10 .

Please refer to FIGS. 1 to 5 together. In some embodiments, the camera lens 10 in FIGS. 1 to 5 all satisfy the conditional expression:

2.0≤FNO≤10.0;

Among them, FNO is the focal ratio of the imaging lens 10 .

That is to say, FNO can be any value in the range of [2.0, 10.0], for example, the value can be 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 9.5, 10 and so on.

Specifically, the imaging lens 10 can adjust the focal ratio (ie, the aperture value) through the aperture stop STO. For example, the focal ratio of the camera lens 10 can be adjusted to 2.4, 2.5, 2.8, etc. through the aperture stop STO.

The imaging lens 10 of the embodiment of the present invention can adjust the focal ratio within the range of 2.0 to 10.0, so that aberrations can be well corrected, and further meet the requirement of high imaging quality.

In some embodiments, the imaging lenses 10 in FIGS. 1 to 5 all satisfy the conditional formula:

0.3≤f1/F≤2.0;

Wherein, f1 is the focal length of the first lens L1.

That is to say, f1/F can be any value in the range of [0.3, 2.0], for example, the value can be 0.3, 0.5, 0.7, 0.9, 1.1, 1.3, 1.5, 1.7, 1.9, 2.0 and so on.

Satisfying the above-mentioned conditional expression, by reasonably allocating the optical power of the first lens L1 , it is beneficial to shorten the optical path of the imaging lens 10 , thereby reducing the overall length of the imaging lens 10 and realizing the ultra-thinning of the imaging lens 10 .

In some embodiments, the imaging lenses 10 in FIGS. 1 to 5 all satisfy the conditional formula:

-0.9≤f3/F≤-0.2;

Wherein, f3 is the focal length of the third lens L3.

That is to say, f3/F can be any value in the range of [-0.9, -0.2], for example, the value can be -0.9, -0.8, -0.7, -0.6, -0.5, -0.4, -0.3 , -0.2, -0.1, etc.

The above conditional expression is satisfied, so that the third lens L3 has a relatively suitable refractive power to match the configuration of the overall refractive power of the imaging lens 10, so that the sensitivity is low, and it is beneficial to correct the differences between the first lens L1 and the second lens L2. resulting aberrations.

Please refer to FIG. 1 to FIG. 5 together. In some embodiments, the infrared cut-off filter L7 is a flat glass made of glass material, and the infrared cut-off filter L7 is used to adjust the wavelength range of the imaging light. Specifically It is used to isolate infrared light from entering the image sensor 20 (shown in FIG. 11 ), so as to prevent infrared light from affecting normal image color and definition.

Referring to FIG. 1 and FIG. 2 , in some embodiments, the plurality of lenses include in sequence along the optical axis from the object side to the image side: a first lens L1 with positive refractive power, a second lens with positive refractive power L2, a third lens L3 having negative refractive power, a fourth lens L4 having positive refractive power, and a fifth lens L5 having negative refractive power. The materials of the first lens L1 to the fifth lens L5 are all plastic.

Since the first lens L1 to the fifth lens L5 are all made of plastic lenses, the imaging lens 10 can effectively eliminate aberrations and meet the requirements of high pixels, and can achieve ultra-thinness and lower cost.

In some embodiments, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are all aspherical mirrors.

In this way, the imaging lens 10 can effectively reduce the total length of the imaging lens 10 by adjusting the curvature radius and aspheric coefficient of each lens surface, and can effectively correct system aberrations and improve imaging quality.

Referring to FIG. 3 to FIG. 5 , in some embodiments, the plurality of lenses include in sequence along the optical axis from the object side to the image side: a first lens L1 with positive refractive power, a second lens with positive refractive power L2, a third lens L3 having negative power, a fourth lens L4 having negative power, a fifth lens L5 having positive power, and a sixth lens L6 having negative power. The materials of the first lens L1 to the sixth lens L6 are all plastic.

Since the first lens L1 to the sixth lens L6 are all made of plastic lenses, the imaging lens 10 can effectively eliminate aberrations and meet the requirements of high pixels, and can achieve ultra-thinness and lower cost.

In some embodiments, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 are all aspherical mirrors.

In this way, the imaging lens 10 can effectively reduce the total length of the imaging lens 10 by adjusting the curvature radius and aspheric coefficient of each lens surface, and can effectively correct system aberrations and improve imaging quality.

Please refer to Figure 1 to Figure 5 together. The shape of the aspheric surface is determined by the following formula:

where Z is the sag of the surface parallel to the z-axis (the z-axis and the optical axis (AX) are the same in each of the above embodiments), r is the radial distance from the apex, and c is the sag of the surface at the apex Curvature (inverse of curvature radius), k is the conic constant, A, B, C, D, E, F, G, H are aspheric coefficients.

first embodiment

Please refer to FIG. 1 and FIG. 6 together, in the first embodiment, the plurality of lenses include in sequence along the optical axis from the object side to the image side: a first lens L1 with positive refractive power, a first lens L1 with positive refractive power Two lenses L2, a third lens L3 having negative refractive power, a fourth lens L4 having positive refractive power, and a fifth lens L5 having negative refractive power.

The object side surface S1 of the first lens L1 is a convex surface, and the image side surface S2 is a concave surface. The object side S3 of the second lens L2 is convex, and the image side S4 is concave. The object side surface S5 of the third lens L3 is a convex surface, and the image side surface S6 is a concave surface. The object side S7 of the fourth lens L4 is concave, and the image side S8 is convex. The object side S9 of the fifth lens L5 is concave, and the image side S10 is convex.

The camera lens 10 meets the conditions in the following table:

Table 1

f1(mm) 22.779 F(mm) 12.317 f2(mm) 5.669 FNO 2.8 f3(mm) -4.766 HFOV(deg) 11.5 f4(mm) 13.035 f5(mm) -31.074

Table 2

table 3

Wherein, in Table 1, f1 is the focal length of the first lens L1, f2 is the focal length of the second lens L2, f3 is the focal length of the third lens L3, f4 is the focal length of the fourth lens L4, and f5 is the focal length of the fifth lens L5 , F is the effective focal length of the imaging lens 10 , FNO is the focal ratio of the imaging lens 10 , and HFOV is half the field of view of the imaging lens 10 .

Second Embodiment

Please refer to FIG. 2 and FIG. 7 together, in the second embodiment, the plurality of lenses include in sequence along the optical axis from the object side to the image side: a first lens L1 with positive refractive power, a first lens L1 with positive refractive power Two lenses L2, a third lens L3 having negative refractive power, a fourth lens L4 having positive refractive power, and a fifth lens L5 having negative refractive power.

The object side surface S1 of the first lens L1 is a convex surface. The object side S3 of the second lens L2 is convex, and the image side S4 is convex. The object side S5 of the third lens L3 is concave, and the image side S6 is concave. The object side S7 of the fourth lens L4 is concave, and the image side S8 is convex. The object side S9 of the fifth lens L5 is concave, and the image side S10 is convex.

The camera lens 10 meets the conditions in the following table:

Table 4

f1(mm) 18.251 F(mm) 12.269 f2(mm) 6.216 FNO 2.5 f3(mm) -5.396 HFOV(deg) 11.5 f4(mm) 5.856 f5(mm) -5.297

table 5

Table 6

Wherein, in Table 4, f1 is the focal length of the first lens L1, f2 is the focal length of the second lens L2, f3 is the focal length of the third lens L3, f4 is the focal length of the fourth lens L4, and f5 is the focal length of the fifth lens L5 , F is the effective focal length of the imaging lens 10 , FNO is the focal ratio of the imaging lens 10 , and HFOV is half the field of view of the imaging lens 10 .

Third Embodiment

Please refer to FIG. 3 and FIG. 8 together. In the third embodiment, the plurality of lenses include in sequence along the optical axis from the object side to the image side: a first lens L1 with positive refractive power, a first lens L1 with positive refractive power Two lenses L2, a third lens L3 with negative power, a fourth lens L4 with negative power, a fifth lens L5 with positive power, and a sixth lens L6 with negative power.

The object side surface S1 of the first lens L1 is a convex surface, and the image side surface S2 is a concave surface. The object side S3 of the second lens L2 is convex, and the image side S4 is convex. The object side surface S5 of the third lens L3 is a convex surface, and the image side surface S6 is a concave surface. The object side S7 of the fourth lens L4 is concave, and the image side S8 is concave. The object side S9 of the fifth lens L5 is concave, and the image side S10 is convex. The object side surface S11 of the sixth lens L6 is a concave surface, and the image side surface S12 is a convex surface.

The camera lens 10 meets the conditions in the following table:

Table 7

f1(mm) 7.374 F(mm) 12.341 f2(mm) 14.138 FNO 2.8 f3(mm) -8.699 HFOV(deg) 11.4 f4(mm) -10.024 f5(mm) 16.106 f6(mm) -28.149

Table 8

Table 9

Wherein, in Table 7, f1 is the focal length of the first lens L1, f2 is the focal length of the second lens L2, f3 is the focal length of the third lens L3, f4 is the focal length of the fourth lens L4, and f5 is the focal length of the fifth lens L5 , f6 is the focal length of the sixth lens L6 , F is the effective focal length of the imaging lens 10 , FNO is the focal ratio of the imaging lens 10 , and HFOV is half the field angle of the imaging lens 10 .

Fourth Embodiment

Please refer to FIG. 4 and FIG. 9 together. In the fourth embodiment, the plurality of lenses include in sequence along the optical axis from the object side to the image side: a first lens L1 with positive refractive power, a first lens L1 with positive refractive power Two lenses L2, a third lens L3 with negative power, a fourth lens L4 with negative power, a fifth lens L5 with positive power, and a sixth lens L6 with negative power.

The object side surface S1 of the first lens L1 is a convex surface, and the image side surface S2 is a concave surface. The object side S3 of the second lens L2 is convex, and the image side S4 is convex. The object side S5 of the third lens L3 is concave, and the image side S6 is concave. The object side S7 of the fourth lens L4 is concave, and the image side S8 is concave. The object side S9 of the fifth lens L5 is concave, and the image side S10 is convex. The object side surface S11 of the sixth lens L6 is a concave surface, and the image side surface S12 is a convex surface.

The camera lens 10 meets the conditions in the following table:

Table 10

f1(mm) 5.407 F(mm) 10.608 f2(mm) 11.986 FNO 2.4 f3(mm) -5.414 HFOV(deg) 13.0 f4(mm) -6.864 f5(mm) 7.409 f6(mm) -10.907

Table 11

Table 12

Wherein, in Table 10, f1 is the focal length of the first lens L1, f2 is the focal length of the second lens L2, f3 is the focal length of the third lens L3, f4 is the focal length of the fourth lens L4, and f5 is the focal length of the fifth lens L5 , f6 is the focal length of the sixth lens L6 , F is the effective focal length of the imaging lens 10 , FNO is the focal ratio of the imaging lens 10 , and HFOV is half the field angle of the imaging lens 10 .

Fifth Embodiment

Please refer to FIG. 5 and FIG. 10 together, in the fifth embodiment, the plurality of lenses include in sequence along the optical axis from the object side to the image side: a first lens L1 with positive refractive power, a first lens L1 with positive refractive power Two lenses L2, a third lens L3 with negative power, a fourth lens L4 with negative power, a fifth lens L5 with positive power, and a sixth lens L6 with negative power.

The object side surface S1 of the first lens L1 is a convex surface, and the image side surface S2 is a concave surface. The object side S3 of the second lens L2 is convex, and the image side S4 is concave. The object side S5 of the third lens L3 is concave, and the image side S6 is concave. The object side S7 of the fourth lens L4 is convex, and the image side S8 is concave. The object side surface S9 of the fifth lens L5 is a convex surface, and the image side surface S10 is a convex surface. The object side surface S11 of the sixth lens L6 is a concave surface, and the image side surface S12 is a convex surface.

The camera lens 10 meets the conditions in the following table:

Table 13

f1(mm) 6.354 F(mm) 10.780 f2(mm) 15.208 FNO 2.4 f3(mm) -3.970 HFOV(deg) 13.1 f4(mm) -52.283 f5(mm) 6.973 f6(mm) -13.375

Table 14

Table 15

Wherein, in Table 13, f1 is the focal length of the first lens L1, f2 is the focal length of the second lens L2, f3 is the focal length of the third lens L3, f4 is the focal length of the fourth lens L4, and f5 is the focal length of the fifth lens L5 , f6 is the focal length of the sixth lens L6 , F is the effective focal length of the imaging lens 10 , FNO is the focal ratio of the imaging lens 10 , and HFOV is half the field angle of the imaging lens 10 .

In the first to fifth embodiments, the selected image sensors 20 (shown in FIG. 11 ) are all 12 million pixels, the pixel size is 1 μm*1 μm, and the diagonal distance of the effective image sensing area is 5mm.

In the imaging lens 10 of the first embodiment to the fifth embodiment, due to the mixed arrangement of a plurality of lenses having positive refractive power and negative refractive power, the requirements of the imaging lens 10 for high resolution and ultra-thinning are satisfied, and the It can be ensured that the imaging lens 10 has better imaging quality. The imaging lens 10 can be used as an ultra-thin telephoto lens.

Referring to FIG. 11 , the camera lens 10 of the embodiment of the present invention can be applied to the electronic device 100 of the embodiment of the present invention. In other words, the electronic device 100 includes the image sensor 20 and the imaging lens 10 of any one of the above embodiments. The camera lens 10 is aligned with the image sensor 20 .

Specifically, the image sensor 20 may be a complementary metal oxide semiconductor (CMOS, Complementary Metal Oxide Semiconductor) image sensor or a charge coupled device (CCD, Charge-coupled Device) image sensor. The alignment of the camera lens 10 with the image sensor 20 includes: the optical axis of the camera lens 10 is coincident with the center normal of the image sensor 20 .

The electronic device 100 of the embodiment of the present invention includes, but is not limited to, an electronic device supporting imaging, such as a mobile phone, a smart phone, a tablet computer, a laptop computer, a notebook computer, a smart watch, and the like.

In the above-mentioned embodiments, the camera lens 10 can be applied to the electronic device 100 alone. In other embodiments, the imaging lens 10 (the imaging lens 10 in the embodiment of the present invention is a telephoto lens) can also be used in the electronic device 100 in combination with a wide-angle lens with a short focal length to achieve the effect of optical zooming. Specifically, when the electronic device 100 is used to acquire images, the user can select and switch between different shooting functions (telephoto or wide-angle) according to their own needs, and can use related algorithms to achieve the effect of optical zoom.

In some embodiments, the electronic device 100 satisfies the conditional expression:

1.5≤TTL/IMA≤3.1;

Wherein, IMA is the diagonal distance of the effective image sensing area of the image sensor 20 .

That is to say, the TTL/IMA can be any value in the range of [1.5, 3.1], for example, the value can be 1.5, 1.7, 1.9, 2.1, 2.3, 2.5, 2.7, 2.9, 3.1 and so on.

When TTL/IMA<1.5, it is difficult to correct various aberrations, especially field curvature and distortion aberration; when TTL/IMA>3.1, the overall length of the camera lens 10 is too long, resulting in an overall enlargement of the camera lens 10 . When the above conditional expressions are satisfied, various aberrations can be corrected well, and the imaging lens 10 can be made ultra-thin.

In the description of this specification, reference is made to the terms "some embodiments," "one embodiment," "some embodiments," "exemplary embodiments," "examples," "specific examples," or "some examples," etc. The description means that a particular feature, structure, material or characteristic described in connection with the described embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features delimited with "first", "second" may expressly or implicitly include at least one of said features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Variations, modifications, substitutions, and alterations are made to the embodiments, and the scope of the present invention is defined by the claims and their equivalents.

Claims (10)

1. a kind of pick-up lens, which is characterized in that the pick-up lens includes being sequentially arranged along the optical axis of the pick-up lens Multiple refractive lenses and cutoff filter, at least two in multiple lens have positive light coke, Duo Gesuo At least one of lens are stated with negative power, the pick-up lens meets conditional:

0.75≤TTL/F≤1.25；

Wherein, F is the effective focal length of the pick-up lens, and TTL is the outermost object side of the pick-up lens to the camera shooting Distance on the axis of the imaging surface of camera lens.

2. pick-up lens according to claim 1, which is characterized in that multiple lens are from the object side to image side along optical axis Include: in order

The first lens with positive light coke；

The second lens with positive light coke；

The third lens with negative power；

The 4th lens with positive light coke；And

The 5th lens with negative power.

3. pick-up lens according to claim 2, which is characterized in that the pick-up lens meets conditional:

- 2.7≤f5/F≤- 0.2；

Wherein, f5 is the focal length of the 5th lens.

4. pick-up lens according to claim 1, which is characterized in that multiple lens are from the object side to image side along optical axis Include: in order

The first lens with positive light coke；

The second lens with positive light coke；

The third lens with negative power；

The 4th lens with negative power；

The 5th lens with positive light coke；And

The 6th lens with negative power.

5. pick-up lens according to claim 4, which is characterized in that the pick-up lens meets conditional:

- 2.7≤f6/F≤- 0.2；

Wherein, f6 is the focal length of the 6th lens.

6. pick-up lens described in -5 any one according to claim 1, which is characterized in that the pick-up lens meets condition Formula:

2.0≤FNO≤10；

Wherein, FNO is the coke ratio of the pick-up lens.

7. according to pick-up lens described in claim 2-5 any one, which is characterized in that the pick-up lens meets condition Formula:

0.3≤f1/F≤2.0；

Wherein, f1 is the focal length of first lens.

8. according to pick-up lens described in claim 2-5 any one, which is characterized in that the pick-up lens meets condition Formula:

- 0.9≤f3/F≤- 0.2；

Wherein, f3 is the focal length of the third lens.

9. a kind of electronic device characterized by comprising

Image Sensor；And

Pick-up lens described in claim 1-8 any one, the pick-up lens are aligned with the Image Sensor.

10. electronic device according to claim 9, which is characterized in that the electronic device meets conditional:

1.5≤TTL/IMA≤3.1；

Wherein, IMA is the diagonal distance in effective image sensing area of the Image Sensor.