TWI759013B - Lens assembly - Google Patents

Abstract

A lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, and a tenth lens. The first, fifth, and tenth lenses are with positive refractive power. The second and sixth lenses are with negative refractive power. The seventh lens includes a convex surface facing an object side. The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, and the tenth lens are arranged in order from the object side to an image side along an optical axis. An air gap is included between the sixth lens and the seventh lens and another air gap is included between the eighth lens and th ninth lens.

Description

Imaging Lens(51)

The present invention relates to an imaging lens.

The development trend of today's imaging lenses, in addition to the continuous development of miniaturization, large aperture and high resolution, requires the ability to resist environmental temperature changes with different application requirements. In order to meet the requirements of miniaturization, large aperture, high resolution and resistance to environmental temperature changes at the same time, an imaging lens with a new architecture is required.

In view of this, the main purpose of the present invention is to provide an imaging lens, which has a short overall lens length, a small aperture value, a high resolution, and is resistant to changes in ambient temperature, but still has good optical performance.

The invention provides an imaging lens including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens lens and a tenth lens. The first lens has positive refractive power. The second lens has negative refractive power. The third lens has refractive power. The fourth lens has refractive power. The fifth lens has positive refractive power. The sixth lens has negative refractive power. The seventh lens has refractive power and includes a concave surface facing an object side. The eighth lens has refractive power. The ninth lens has refractive power. The tenth lens has a positive refractive power. The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens and the tenth lens are along an optical axis from the object side to an image arranged side by side. An air space is included between the sixth lens and the seventh lens. Another air space is included between the eighth lens and the ninth lens.

The first lens is a meniscus lens, and includes a convex surface facing the object side and a concave surface facing the image side, the second lens is a meniscus lens, and includes a convex surface facing the object side and a concave surface facing the image side, and the third lens It has negative refractive power and includes a concave surface facing the object side and another concave surface facing the image side, the fourth lens has positive refractive power and includes a convex surface facing the image side, the fifth lens includes a convex surface facing the object side, and the sixth lens includes a concave surface toward the object side and the other concave surface toward the image side, the seventh lens has positive refractive power, and may further include a convex surface toward the image side, the eighth lens has positive refractive power, and includes a convex surface toward the object side and another convex surface toward the image side, The ninth lens has negative refractive power and includes a concave surface facing the object side, and the tenth lens includes a convex surface facing the object side.

The fourth lens may further include a concave or convex surface facing the object side, the fifth lens may further include a concave or convex surface facing the image side, the ninth lens may further include a concave or convex surface facing the image side, and the tenth lens may further include a The concave or convex surface faces the image side.

The imaging lens of the present invention may further include an aperture, disposed between a first lens group and a second lens group, and the first lens group includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens The second lens group includes a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens.

The first lens group has positive refractive power, and the second lens group has positive refractive power.

The imaging lens satisfies the following conditions: 3.1mm<R ₁₁ +R ₃₁ <12.2mm; wherein R ₁₁ is a radius of curvature of one of the object sides of the first lens, and R ₃₁ is a radius of curvature of one of the object sides of the third lens .

The imaging lens satisfies the following conditions: -0.31<R ₃₁ /f ₁ <-0.13; wherein, f ₁ is an effective focal length of the first lens, and R ₃₁ is a curvature radius of an object side surface of the third lens.

The imaging lens satisfies any of the following conditions: -10mm<f _e -f _k <10mm;-4.3<(R ₄₁ -R ₉₂ )/f ₄ <25;-5.2<(R _k2 -R _m2) /f _e <37.6; wherein, f ₄ is an effective focal length of the fourth lens, f _e is an effective focal length of the lens closest to the object side in the second lens group, f _k is an effective focal length of the second lens close to the image side, R ₄₁ is a curvature radius of an object side of the fourth lens, R ₉₂ is a curvature radius of an image side of the ninth lens, R _k2 is a curvature radius of an image side of the second lens close to the image side, R _m2 is a radius of curvature of one of the image sides of the lens closest to the image side.

The imaging lens satisfies any of the following conditions: 10mm<f ₄ -R _k2 <56.5mm;0.4<R ₁₁ /R ₁₂ <0.8;48mm<f ₁ +f ₄ <108mm; where f ₁ is one of the first lenses Effective focal length, _f4 is an effective focal length of the fourth lens, R11 is a curvature radius of an object side of the first lens, _R12 is a curvature radius of an image side of the first lens, and _Rk2 is the second _closest A radius of curvature of one of the image sides of the lens on the image side.

The imaging lens satisfies any of the following conditions: -2.2<R _k2 /(f ₁ +f _k )<0.13;-22<(R _m2 +f ₁ )/f _k <-1; where f ₁ is the first lens an effective focal length, f _k is an effective focal length of the second lens close to the image side, R _k2 is a curvature radius of an image side of the second lens close to the image side, R _m2 is one of the lenses closest to the image side Like the radius of curvature of one of the sides.

The imaging lens satisfies any of the following conditions: 2.4<TTL/f _r <2.7;50mm<f ₁ -f _k <100mm; where f ₁ is an effective focal length of the first lens, and f _k is the second lens close to the image side An effective focal length of the lens, f _r is an effective focal length of the second lens group, and TTL is a distance on the optical axis from an object side of the first lens to an imaging plane.

In order to make the above objects, features, and advantages of the present invention more clearly understood, preferred embodiments are hereinafter described in detail with the accompanying drawings.

1, 2, 3: Imaging lens

LG11, LG21, LG31: The first lens group

ST1, ST2, ST3: Aperture

LG12, LG22, LG32: Second lens group

L11, L21, L31: The first lens

L12, L22, L32: Second lens

L13, L23, L33: Third lens

L14, L24, L34: Fourth lens

L15, L25, L35: Fifth lens

L16, L26, L36: Sixth lens

L17, L27, L37: Seventh lens

L18, L28, L38: Eighth lens

L19, L29, L39: ninth lens

L110, L210, L310: Tenth lens

IMA1, IMA2, IMA3: Imaging plane

OA1, OA2, OA3: Optical axis

S11, S21, S31: the object side of the first lens

S12, S22, S32: the image side of the first lens

S13, S23, S33: the object side of the second lens

S14, S24, S34: second lens image side

S15, S25, S35: the object side of the third lens

S16, S26, S36: third lens image side

S17, S27, S37: the object side of the fourth lens

S18, S28, S38: image side of the fourth lens

S19, S29, S39: the object side of the fifth lens

S110, S210, S310: the image side of the fifth lens

S111, S211, S311: Aperture surface

S112, S212, S312: the object side of the sixth lens

S113, S213, S313: image side of sixth lens

S114, S214, S314: the object side of the seventh lens

S115, S215, S315: image side of the seventh lens

S116, S216, S316: the object side of the eighth lens

S117, S217, S317: image side of the eighth lens

S118, S218, S318: the object side of the ninth lens

S119, S219, S319: image side of the ninth lens

S120, S220, S320: the object side of the tenth lens

S121, S221, S321: image side of the tenth lens

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

FIG. 2A is a longitudinal aberration (Longitudinal Aberration) diagram of the first embodiment of the imaging lens according to the present invention.

FIG. 2B is a field curvature diagram of the first embodiment of the imaging lens according to the present invention.

FIG. 2C is a distortion diagram of the first embodiment of the imaging lens according to the present invention.

FIG. 3 is a schematic diagram of the lens configuration and optical path of the second embodiment of the imaging lens according to the present invention.

FIG. 4A is a longitudinal aberration diagram of the second embodiment of the imaging lens according to the present invention.

FIG. 4B is a field curvature diagram of the second embodiment of the imaging lens according to the present invention.

FIG. 4C is a distortion diagram of the second embodiment of the imaging lens according to the present invention.

FIG. 5 is a schematic diagram of a lens configuration and an optical path of a third embodiment of the imaging lens according to the present invention.

FIG. 6A is a longitudinal aberration diagram of a third embodiment of the imaging lens according to the present invention.

FIG. 6B is a field curvature diagram of the third embodiment of the imaging lens according to the present invention.

FIG. 6C is a distortion diagram of a third embodiment of the imaging lens according to the present invention.

The present invention provides an imaging lens, comprising: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a first lens Nine lenses and a tenth lens; wherein the first lens has positive refractive power; wherein the second lens has negative refractive power; wherein the third lens has refractive power; wherein the fourth lens has refractive power; wherein the fifth lens has positive refractive power; wherein the sixth lens It has negative refractive power; wherein the seventh lens has refractive power, and the seventh lens includes a concave surface facing an object side; wherein the eighth lens has refractive power; wherein the ninth lens has refractive power; wherein the tenth lens has positive refractive power; The second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens and the tenth lens are sequentially arranged along an optical axis from the object side to an image side; An air space is included between the sixth lens and the seventh lens, and another air space is included between the eighth lens and the ninth lens.

Please refer to Table 1, Table 3 and Table 5 below, wherein Table 1, Table 3 and Table 5 are the relevant parameter tables of each lens of the first embodiment to the third embodiment of the imaging lens according to the present invention, respectively.

Figures 1, 3, and 5 are schematic diagrams of lens configurations and optical paths of the first, second, and third embodiments of the imaging lens of the present invention, respectively, wherein the first lens group LG11 includes a first lens L11, a second lens L12, and a third lens L13, the fourth lens L14 and the fifth lens L15, the second lens group LG12 includes the sixth lens L16, the seventh lens L17, the eighth lens L18, the ninth lens L19 and the tenth lens L110; the first lens group LG21 includes the A lens L21, a second lens L22, a third lens L23, a fourth lens L24 and a fifth lens L25, the second lens group LG22 includes a sixth lens L26, a seventh lens L27, an eighth lens L28, a ninth lens L29 and The tenth lens L210; the first lens group LG31 includes a first lens L31, a second lens L32, a third lens L33, a fourth lens L34 and a Five lenses L35, the second lens group LG32 includes a sixth lens L36, a seventh lens L37, an eighth lens L38, a ninth lens L39 and a tenth lens L310.

The first lenses L11, L21 and L31 are meniscus lenses with positive refractive power and are made of glass material. S31 and the image side surfaces S12, S22 and S32 are all spherical surfaces.

The second lenses L12, L22 and L32 are meniscus lenses with negative refractive power and are made of glass material. S33 and the image side surfaces S14, S24, and S34 are all spherical surfaces.

The third lenses L13, L23, L33 are biconcave lenses with negative refractive power, made of glass material, the object sides S15, S25, S35 are concave, the image sides S16, S26, S36 are concave, and the object sides S15, S25, S35 are concave. Like the side surfaces S16, S26, S36 are spherical surfaces.

The fourth lenses L14, L24, L34 have positive refractive power and are made of glass material, the image sides S18, S28, S38 are convex surfaces, and the object sides S17, S27, S37 and the image sides S18, S28, S38 are all spherical surfaces.

The fifth lenses L15, L25 and L35 have positive refractive power and are made of glass material. The object side surfaces S19, S29 and S39 are convex surfaces, and the object side surfaces S19, S29 and S39 and the image side surfaces S110, S210 and S310 are all spherical surfaces.

The sixth lens L16, L26, and L36 have negative refractive power and are made of glass material. The object sides S112, S212, and S312 are concave, the image sides S113, S213, and S313 are concave, and the object sides S112, S212, S312 and the image side S113 are concave. , S213 and S313 are all spherical surfaces.

The seventh lenses L17, L27 and L37 are meniscus lenses with positive refractive power and are made of glass material. S315 is a convex surface, and the object side surfaces S114, S214, S314 and the image side surfaces S115, S215, and S315 are all spherical surfaces.

The eighth lenses L18, L28, and L38 have positive refractive power and are made of glass material. The object sides S116, S216, and S316 are convex, the image sides S117, S217, and S317 are convex, and the object sides S116, S216, S316 and the image side S117 are convex. , S217 and S317 are all spherical surfaces.

The ninth lenses L19, L29, and L39 have negative refractive power and are made of glass material. The object sides S118, S218, and S318 are concave, and the object sides S118, S218, and S318 and the image sides S119, S219, and S319 are spherical surfaces.

The tenth lenses L110, L210, and L310 have positive refractive power and are made of glass material. The object sides S120, S220, and S320 are convex surfaces, and the object sides S120, S220, and S320 and the image sides S121, S221, and S321 are spherical surfaces.

In addition, the imaging lenses 1, 2, and 3 meet at least one of the following conditions:

-10mm<f _e -f _k <10mm; (1)

-4.3<(R ₄₁ -R ₉₂ )/f ₄ <25; (2)

-5.2<(R _k2 -R _m2 )/f _e <37.6; (3)

10mm<f ₄ -R _k2 <56.5mm; (4)

0.4<R ₁₁ /R ₁₂ <0.8; (5)

48mm<f ₁ +f ₄ <108mm; (6)

-2.2<R _k2 /(f ₁ +f _k )<0.13; (7)

-22<(R _m2 +f ₁ )/f _k <-1; (8)

2.4<TTL/ _fr <2.7; (9)

50mm<f ₁ -f _k <100mm; (10)

3.1mm<R ₁₁ +R ₃₁ <12.2mm; (11)

-0.31<R ₃₁ /f ₁ <-0.13; (12)

Among them, f ₁ is one of the effective focal lengths of the first lenses L11, L21, L31 in the first to third embodiments, and f ₄ is the first to third embodiments, the fourth lenses L14, L24, An effective focal length of L34, f _e is an effective focal length of the lenses L11, L21, L31 closest to the object side in the second lens group LG12, LG22, LG32 in the first to third embodiments, f _k is the first In the first to third embodiments, an effective focal length of the second lens L19, L29, L39 close to the image side, f _r is the second lens group LG12, LG22, LG32 in the first to third embodiments An effective focal length, R ₁₁ is a curvature radius of the side surfaces S11, S21, S31 of the first lenses L11, L21, L31 in the first to third embodiments, R ₁₂ is the first to third embodiments In the embodiment, the radius of curvature of the image side surfaces S12, S22, and S32 of the first lenses L11, L21, and L31, and R ₄₁ is the object side surface of the fourth lenses L14, L24, and L34 in the first to third embodiments. S17, S27, S37 is a curvature radius, R ₉₂ is a curvature radius of the image side surfaces S119, S219, S319 of the ninth lenses L19, L29, L39 in the first to third embodiments, R _k2 is the first In the embodiment to the third embodiment, a curvature radius of the image sides S119, S219, S319 of the second lens L19, L29, L39 close to the image side, R _m2 is the first embodiment to the third embodiment, the closest A curvature radius of the image sides S121, S221, S321 of the lenses L110, L210, L310 on the image side, TTL is the first embodiment to the third embodiment, the object sides S11, S21, S31 is a distance between the imaging planes IMA1, IMA2, and IMA3 on the optical axes OA1, OA2, and OA3, respectively, and R ₃₁ is the first to third embodiments. One of the curvature radius of S25 and S35. The imaging lenses 1, 2, and 3 can effectively shorten the total length of the lens, effectively improve the resolution, effectively resist environmental temperature changes, effectively correct aberrations, and effectively correct chromatic aberrations.

When the condition (1) is satisfied: -10mm<f _e -f _k <10mm, the coma and field curvature and image plane curvature can be corrected effectively; when the condition (2) is satisfied: -4.3<(R ₄₁ -R ₉₂ ) When / _f4 <25, it can effectively correct lateral chromatic aberration; when the condition (3) is met: -5.2<(R _k2 -R _m2 )/f _e <37.6, it can effectively correct high-order system aberration and lateral chromatic aberration; when the condition is met (4): When 10mm<f ₄ -R _k2 <56.5mm, it can effectively correct the lateral chromatic aberration; when the condition (5) is satisfied: 0.4<R ₁₁ /R ₁₂ <0.8, it can effectively correct the distortion and improve the assembly of the imaging lens When the condition (6) is satisfied: 48mm<f ₁ +f ₄ <108mm, the volume of the imaging lens can be effectively reduced by the high refractive power of the first and fourth lenses; when the condition (7) is satisfied: -2.2<R When _k2 /(f ₁ +f _k )<0.13, the aberration and astigmatism of the off-axis field of view can be effectively corrected; when the condition (8) is satisfied: -22<(R _m2 +f ₁ )/f _k <-1 , it can effectively reduce the volume of the imaging lens and reduce the sensitivity of the system; when the condition (9) is satisfied: 2.4<TTL/f _r <2.7, it can effectively ensure the shortest total length of the imaging lens; when the condition (10) is satisfied: 50mm< When f ₁ -f _k <100mm, the astigmatism of the imaging lens can be corrected effectively; when the condition (11) is satisfied: 3.1mm<R ₁₁ +R ₃₁ <12.2mm, the off-axis chromatic aberration can be corrected effectively; when the condition (12) is satisfied, the off-axis chromatic aberration can be corrected effectively. ): -0.31<R ₃₁ /f ₁ <-0.13, it can effectively correct distortion and off-axis chromatic aberration. The design of the global face glass helps to achieve the above conditions, allowing the imaging lens to maintain high performance in high or low temperature environments.

The first embodiment of the imaging lens of the present invention will now be described in detail. Referring to FIG. 1 , the imaging lens 1 includes a first lens group LG11 , an aperture ST1 and a second lens group LG12 in sequence from an object side to an image side along an optical axis OA1 . The first lens group LG11 includes a first lens L11, a second lens L12, a third lens L13, a fourth lens L14 and a fifth lens L15 in sequence from the object side to the image side along the optical axis OA1. The two-lens group LG12 is from the object side along the optical axis OA1 The image side includes a sixth lens L16, a seventh lens L17, an eighth lens L18, a ninth lens L19 and a tenth lens L110 in sequence. During imaging, the light from the object side is finally imaged on an imaging plane IMA1. According to the first to thirteenth paragraphs of [Embodiment], wherein:

The object side S17 of the fourth lens L14 is a convex surface; the fifth lens L15 is a meniscus lens, and its image side S110 is a concave surface; the ninth lens L19 is a meniscus lens, and its image side S119 is a convex surface; the tenth lens L110 is a curved surface. Moon lens, its image side S121 is concave;

Using the above-mentioned lens, aperture ST1 and the design that satisfies at least one of the conditions (1) to (12), the imaging lens 1 can effectively shorten the total length of the lens, effectively improve the resolution, effectively resist environmental temperature changes, and effectively Correct aberration, effective correction of chromatic aberration.

Table 1 is a table of relevant parameters of each lens of the imaging lens 1 in the first figure.

Table 2 shows the relevant parameter values of the imaging lens 1 of the first embodiment and the calculated values of the corresponding conditions (1) to (12). It can be seen from Table 2 that the imaging lens 1 of the first embodiment can meet the conditions (1). ) to the requirements of condition (12).

In addition, the optical performance of the imaging lens 1 of the first embodiment can also meet the requirements. It can be seen from FIG. 2A that the longitudinal aberration of the imaging lens 1 of the first embodiment is between -0.0035mm and -0.0010mm. It can be seen from FIG. 2B that the field curvature of the imaging lens 1 of the first embodiment is between -0.025 mm and 0.00 mm. It can be seen from FIG. 2C that the distortion of the imaging lens 1 of the first embodiment is between -8% and 0%.

It is obvious that the longitudinal aberration, field curvature, and distortion of the imaging lens 1 of the first embodiment can be effectively corrected, thereby obtaining better optical performance.

Please refer to FIG. 3 , the imaging lens 2 sequentially includes a first lens group LG21 , an aperture ST2 and a second lens group LG22 along an optical axis OA2 from an object side to an image side. The first lens group LG21 includes a first lens L21, a second lens L22, a third lens L23, a fourth lens L24 and a fifth lens L25 in sequence from the object side to the image side along the optical axis OA2. The two lens groups LG22 sequentially include a sixth lens L26 , a seventh lens L27 , an eighth lens L28 , a ninth lens L29 and a tenth lens L210 along the optical axis OA2 from the object side to the image side. During imaging, the light from the object side is finally imaged on an imaging plane IMA2. According to [Embodiment] 1st to 13th paragraph, where:

The fourth lens L24 is a meniscus lens, and its object side surface S27 is a concave surface; the fifth lens L25 is a convex surface as the side surface S210; the ninth lens L29 is a concave surface as the side surface S219; the tenth lens L210 is a convex surface as the side surface S221;

Using the above-mentioned lens, aperture ST2 and the design that satisfies at least one of the conditions (1) to (12), the imaging lens 2 can effectively shorten the total length of the lens, effectively improve the resolution, effectively resist environmental temperature changes, and effectively Correct aberration, effective correction of chromatic aberration.

Table 3 is a table of relevant parameters of each lens of the imaging lens 2 in Figure 3.

Table 4 shows the relevant parameter values of the imaging lens 2 of the second embodiment and the calculated values of the corresponding conditions (1) to (12). It can be seen from Table 4 that the imaging lens 2 of the second embodiment can meet the conditions (1). ) to the requirements of condition (12).

In addition, the optical performance of the imaging lens 2 of the second embodiment can also meet the requirements. It can be seen from FIG. 4A that the longitudinal aberration of the imaging lens 2 of the second embodiment is between -0.01 mm and 0.03 mm. It can be seen from FIG. 4B that the field curvature of the imaging lens 2 of the second embodiment is between -0.03 mm and 0.00 mm. It can be seen from FIG. 4C that the distortion of the imaging lens 2 of the second embodiment is between -8% and 0%.

It is obvious that the longitudinal aberration, field curvature, and distortion of the imaging lens 2 of the second embodiment can be effectively corrected, thereby obtaining better optical performance.

Please refer to FIG. 5 , the imaging lens 3 includes a first lens group LG31 , an aperture ST3 and a second lens group LG32 sequentially from an object side to an image side along an optical axis OA3 . The first lens group LG31 includes a first lens L31, a second lens L32, a third lens L33, a fourth lens L34 and a fifth lens L35 in sequence from the object side to the image side along the optical axis OA3. The two lens groups LG32 sequentially include a sixth lens L36, a seventh lens L37, an eighth lens L38, a ninth lens L39 and a tenth lens L310 along the optical axis OA3 from the object side to the image side. During imaging, the light from the object side is finally imaged on an imaging plane IMA3. According to the first to thirteenth paragraphs of [Embodiment], wherein:

The object side S37 of the fourth lens L34 is concave; the fifth lens L35 is convex as the side S310; the ninth lens L39 is convex as the side S319; the tenth lens L310 is convex as the side S321;

Using the above-mentioned lens, aperture ST3 and the design that satisfies at least one of the conditions (1) to (12), the imaging lens 3 can effectively shorten the total length of the lens, effectively improve the resolution, effectively resist environmental temperature changes, and effectively Correct aberration, effective correction of chromatic aberration.

Table 5 is a table of relevant parameters of each lens of the imaging lens 3 in Fig. 5 .

Table 6 shows the relevant parameter values of the imaging lens 3 of the third embodiment and their corresponding bars From the calculated values of the conditions (1) to (12), it can be seen from Table 6 that the imaging lens 3 of the third embodiment can all meet the requirements of the conditions (1) to (12).

In addition, the optical performance of the imaging lens 3 of the third embodiment can also meet the requirements. It can be seen from FIG. 6A that the longitudinal aberration of the imaging lens 3 of the third embodiment is between -0.012 mm and 0.00 mm. It can be seen from FIG. 6B that the field curvature of the imaging lens 3 of the third embodiment is between -0.03 mm and 0.005 mm. It can be seen from FIG. 6C that the distortion of the imaging lens 3 of the third embodiment is between -8% and 0%.

It is obvious that the longitudinal aberration, field curvature, and distortion of the imaging lens 3 of the third embodiment can be effectively corrected, thereby obtaining better optical performance.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone who is familiar with the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be determined by the scope of the appended patent application.

1: Imaging lens

LG11: The first lens group

ST1: Aperture

LG12: Second lens group

L11: The first lens

L12: Second lens

L13: Third lens

L14: Fourth lens

L15: Fifth lens

L16: Sixth lens

L17: Seventh lens

L18: Eighth lens

L19: ninth lens

L110: Tenth Lens

IMA1: Imaging plane

OA1: Optical axis

S11: Object side of the first lens

S12: The first lens image side

S13: Object side of the second lens

S14: The second lens is like the side

S15: Object side of the third lens

S16: The third lens is like the side

S17: Fourth lens object side

S18: Fourth lens like side

S19: Object side of fifth lens

S110: Fifth lens image side

S111: Aperture Surface

S112: Object side of sixth lens

S113: The sixth lens image side

S114: Seventh lens object side

S115: The seventh lens image side

S116: Object side of the eighth lens

S117: The eighth lens image side

S118: The object side of the ninth lens

S119: Ninth lens image side

S120: Object side of tenth lens

S121: The tenth lens image side

Claims (10)

An imaging lens mainly consists of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens and a tenth lens composition; wherein the first lens has positive refractive power; wherein the second lens has negative refractive power; wherein the third lens has refractive power; wherein the fourth lens has refractive power; wherein the fifth lens has positive refractive power; Wherein the sixth lens has negative refractive power; wherein the seventh lens has refractive power, and the seventh lens includes a concave surface facing an object side; wherein the eighth lens has refractive power; wherein the ninth lens has refractive power; wherein the tenth lens having positive refractive power; wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens and The tenth lens is sequentially arranged along an optical axis from the object side to an image side; an air space is included between the sixth lens and the seventh lens, and another lens is included between the eighth lens and the ninth lens Air spacer. An imaging lens mainly consists of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, an aperture, a sixth lens, a seventh lens, an eighth lens, a The ninth lens and the tenth lens are composed; wherein the first lens has positive refractive power; wherein the second lens has negative refractive power; wherein the third lens has refractive power; wherein the fourth lens has refractive power; wherein the fifth lens has positive refractive power; wherein the sixth lens has negative refractive power refractive power; wherein the seventh lens has refractive power, and the seventh lens includes a concave surface facing an object side; wherein the eighth lens has refractive power; wherein the ninth lens has refractive power; wherein the tenth lens has positive refractive power; wherein the first A lens, the second lens, the third lens, the fourth lens, the fifth lens, the aperture, the sixth lens, the seventh lens, the eighth lens, the ninth lens and the tenth lens Arranged in sequence from the object side to an image side along an optical axis; wherein an air space is included between the sixth lens and the seventh lens, and another air space is included between the eighth lens and the ninth lens. The imaging lens according to any one of claims 1 to 2 of the claimed scope, wherein: the first lens is a meniscus lens, and includes a convex surface facing the object side and a concave surface facing the image side; The second lens is a meniscus lens, and includes a convex surface facing the object side and a concave surface facing the image side; the third lens has negative refractive power, and includes a concave surface facing the object side and another concave surface facing the image side ; The fourth lens has positive refractive power and includes a convex surface facing the image side; the fifth lens includes a convex surface facing the object side; the sixth lens includes a concave surface facing the object side and another concave surface facing the image side; the The seventh lens has positive refractive power, and further includes a convex surface facing the image side; the eighth lens has positive refractive power, and includes a convex surface facing the object side and another convex surface facing the image side; The ninth lens has negative refractive power, and includes a concave surface facing the object side; and the tenth lens includes a convex surface facing the object side. The imaging lens of claim 3, wherein: the fourth lens further includes a concave or convex surface facing the object side; the fifth lens further includes a concave or convex surface facing the image side; the ninth lens further includes It includes a concave or convex surface facing the image side; and the tenth lens further includes a concave or convex surface facing the image side. The imaging lens according to item 3 of the claimed scope, a first lens group comprising the first lens, the second lens, the third lens, the fourth lens and the fifth lens; and a second lens group It includes the sixth lens, the seventh lens, the eighth lens, the ninth lens and the tenth lens. According to the imaging lens of claim 5, the first lens group has positive refractive power, and the second lens group has positive refractive power. The imaging lens as described in item 3 of the patent application scope, wherein the imaging lens satisfies any one of the following conditions: -10mm<f _e -f _k <10mm;2.4<TTL/f _r <2.7;-5.2<(R _k2 - R _m2 )/f _e <37.6;10mm<f ₄ -R _k2 <56.5mm; wherein, f _e is the effective focal length of the lens closest to the object side in the second lens group, and f _k is the second lens close to the object side. An effective focal length of the lens on the image side, f _r is an effective focal length of the second lens group, TTL is the distance from an object side of the first lens to an imaging plane on the optical axis, f ₄ is the first lens One of the effective focal lengths of the four lenses, R _k2 is the curvature radius of the image side of the second lens close to the image side, and R _m2 is the curvature radius of the image side of the lens closest to the image side. The imaging lens according to any one of claims 1 to 2 of the scope of the patent application, wherein the imaging lens satisfies any one of the following conditions: 3.1mm<R ₁₁ +R ₃₁ <12.2mm;-0.31<R ₃₁ / f ₁ <-0.13; wherein, R ₁₁ is a radius of curvature of an object side surface of the first lens, R ₃₁ is a curvature radius of an object side surface of the third lens, and f ₁ is an effective one of the first lens focal length. The imaging lens according to any one of claims 1 to 2 of the patent application scope, wherein the imaging lens satisfies any one of the following conditions: -4.3<(R ₄₁ -R ₉₂ )/f ₄ <25;0.4< R ₁₁ /R ₁₂ <0.8;-2.2<R _k2 /(f ₁ +f _k )<0.13;50mm<f ₁ -f _k <100mm; wherein, f ₁ is the effective focal length of one of the first lenses, and f _k is an effective focal length of the second lens close to the image side, R _k2 is a curvature radius of an image side of the second lens close to the image side, f ₄ is an effective focal length of the fourth lens, and R ₁₁ is the A radius of curvature of an object side of the first lens, R ₁₂ is a radius of curvature of an image side of the first lens, R ₄₁ is a radius of curvature of an object side of the fourth lens, R ₉₂ is the ninth The radius of curvature of one of the image sides of the lens. The imaging lens according to any one of claims 1 to 2 of the scope of the patent application, wherein the imaging lens satisfies any one of the following conditions: 48mm<f ₁ +f ₄ <108mm;-22<(R _m2 +f ₁ )/f _k <-1; wherein, f ₁ is an effective focal length of the first lens, f _k is an effective focal length of the second lens close to the image side, and R _m2 is the distance between the lenses closest to the image side. A curvature radius of an image side surface, _f4 is an effective focal length of the fourth lens.

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