CN219016682U

CN219016682U - Optical imaging lens and imaging equipment with same

Info

Publication number: CN219016682U
Application number: CN202320076175.5U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Suzhou Gaoshi Semiconductor Technology Co ltd
Current assignee: Suzhou Gaoshi Semiconductor Technology Co ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-05-12
Anticipated expiration: 2033-01-09

Abstract

The embodiment of the application discloses optical imaging lens and have its imaging device, optical imaging lens includes from object side to image side along the optical axis in proper order: the lens comprises a first lens, a second lens, a first cemented lens, a fifth lens, a second cemented lens, a third cemented lens and a tenth lens, wherein the first lens, the second lens and the second cemented lens all have positive focal power; the first cemented lens, the fifth lens, the third cemented lens and the tenth lens all have negative focal power; and a diaphragm is arranged between the fifth lens and the second cemented lens. According to the utility model, the lens has the characteristics of large visual field, high resolution and the like, and simultaneously, the radial size can be effectively reduced, and the volume of the lens is reduced.

Description

Optical imaging lens and imaging equipment with same

Technical Field

The utility model relates to the field of optical imaging, in particular to an optical imaging lens and imaging equipment with the same.

Background

With the progress and development of technology, the quality of products such as liquid crystal panels and wafers needs to be detected, and the quality of edges of the products needs to be detected in addition to the surface.

At present, in edge detection of products such as wafers, not only edges are required to be detected, but also a small part of the upper surface and the lower surface of the side surface of the edges are required to be detected, so that related companies develop wafer edge detection technology, and can detect the edges of the wafers and the upper surface and the lower surface of the side surface of the edges at the same time.

In view of this, it is necessary to develop an optical imaging lens with a small radial size and high resolution and an imaging apparatus having the same.

Disclosure of Invention

Embodiments of the present application provide an optical imaging lens and an imaging apparatus having the same, which can reduce a radial size of the optical imaging lens while maintaining a large field of view and high resolution, so as to be easily integrated in a small apparatus and debug and maintenance.

In order to solve the technical problems, the embodiment of the application discloses the following technical scheme:

in one aspect, an optical imaging lens is provided, including, in order from an object side to an image side along an optical axis:

a first lens, a second lens, a first cemented lens, a fifth lens, a second cemented lens, a third cemented lens and a tenth lens,

wherein, the first lens, the second lens and the second cemented lens all have positive focal power; the first cemented lens, the fifth lens, the third cemented lens and the tenth lens all have negative focal power; and a diaphragm is arranged between the fifth lens and the second cemented lens.

In addition to or in lieu of one or more of the features disclosed above, the first lens has a first object-side surface and a first image-side surface, both of which are convex.

In addition to or in lieu of one or more of the features disclosed above, the second lens has a second object-side surface and a second image-side surface, both of which are convex.

In addition to one or more features disclosed above, or in lieu thereof, the first cemented lens is cemented with a third lens having negative optical power and a fourth lens having positive optical power,

the third lens is provided with a third object side surface and a third image side surface, and the third object side surface and the third image side surface are concave surfaces;

the fourth lens element has a fourth object-side surface and a fourth image-side surface, wherein both the fourth object-side surface and the fourth image-side surface are convex.

In addition to or in lieu of one or more of the features disclosed above, the fifth lens has a fifth object-side surface and a fifth image-side surface that are concave and convex, respectively.

In addition to one or more features disclosed above, or in lieu thereof, the second cemented lens is cemented with a sixth lens and a seventh lens having positive optical power,

the sixth lens element has a sixth object-side surface and a sixth image-side surface, each of which is convex;

the seventh lens element has a seventh object-side surface and a seventh image-side surface, which are concave and convex, respectively.

In addition to one or more features disclosed above, or in lieu thereof, the third cemented lens is cemented with an eighth lens and a ninth lens having negative optical power,

the eighth lens element has an eighth object-side surface and an eighth image-side surface, which are concave and convex, respectively;

the ninth lens element has a ninth object-side surface and a ninth image-side surface, which are concave and convex, respectively.

In addition to, or in lieu of, one or more features disclosed above, the eighth lens is a positive meniscus lens and the ninth lens is a negative meniscus lens.

In addition to or in lieu of one or more of the features disclosed above, the tenth lens has a tenth object side and a tenth image side that are concave and convex, respectively.

In addition to or in lieu of one or more of the features disclosed above, the optical imaging lens satisfies the following conditional expression:

wherein f ₁ ^′ ₀ Represents the focal length, f, of the tenth lens (L10) ₁ ^′ _～9 Represents the focal length of the first lens (L1) to the ninth lens (L9).

wherein H is ₁ ^′ ₀ Represents the position of the principal surface of the tenth lens (L10), H ₁ ^′ _～9 Represents the main surface positions of the first to ninth lenses (L1) to (L9).

In another aspect, an imaging apparatus is further disclosed, which comprises, in addition to or instead of one or more of the features disclosed above, an optical imaging lens as described in any one of the above, and an imaging device for converting an optical image formed by the optical imaging lens into a digital signal.

One of the above technical solutions has the following advantages or beneficial effects: by changing the structure and layout of the lens group in the optical imaging lens, particularly adding a negative lens in front of the sensor increases the field of view of the optical system, and reduces the radial size of the lens under the condition of ensuring large field of view and high resolution, thereby facilitating daily installation, debugging and maintenance.

Drawings

For a clearer description of an embodiment of the utility model, reference will be made to the accompanying drawings of embodiments, which are given for clarity, wherein:

fig. 1 is a schematic structural diagram of an optical imaging lens according to an embodiment of the present utility model, in which lens groups forming the optical imaging lens are indicated;

fig. 2 is a schematic structural diagram of an optical imaging lens according to an embodiment of the present utility model, in which a light-transmitting surface of each lens is indicated;

FIG. 3 is an MTF diagram of an optical imaging lens according to an embodiment of the present utility model, wherein MTF curves of respective fields of view of the lens are shown;

FIG. 4 is a spot diagram of an optical imaging lens according to an embodiment of the present utility model, showing the shape and size of an imaging focal spot for each field of view of the lens;

FIG. 5 illustrates an application of an optical imaging lens in an edge three-sided detection device according to an embodiment of the present utility model;

fig. 6 is a perspective view of the arc-shaped light source of fig. 5 mated with a product.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other examples, which a person of ordinary skill in the art would obtain without undue burden based on the embodiments of the utility model, are within the scope of the utility model.

In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a," "an," or "the" and similar terms do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are defined with respect to the configuration shown in the drawings, and in particular, "height" corresponds to the top-to-bottom dimension, "width" corresponds to the left-to-right dimension, and "depth" corresponds to the front-to-back dimension, are relative concepts, and thus may vary accordingly depending on the location and use of the terms, and therefore these or other orientations should not be interpreted as limiting terms.

Terms (e.g., "connected" and "attached") referring to an attachment, coupling, etc., refer to a relationship wherein these structures are directly or indirectly secured or attached to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

In some imaging devices, an optical imaging lens may be provided to enable the acquisition of images. The terminal device may be a digital camera, a film camera, a CCD camera, or the like. With the progress and development of technology, defect detection is required on the surfaces of many products such as liquid crystal panels, wafers and high-precision glass, and thus an optical imaging lens is required to improve the detection precision of imaging equipment. In addition to the surface quality, the edge quality of such products also needs to be detected. Currently, in edge detection of products such as wafers, not only edge detection is needed, but also a small part of the upper and lower surfaces of the side surfaces of the edge, so that related companies develop wafer edge detection technology to detect the edge of the wafer and the upper and lower surfaces of the side surfaces of the edge at the same time, in order to be able to shoot the edge and the side surfaces at the same time, a lens with a larger object field of view is needed, and in order to improve detection accuracy, a magnification lens is needed, which generally satisfies that the object field of view and the magnification lens are large, especially in radial dimension, and in some applications, such as wafer edge detection, a lens with a smaller volume is needed to reduce the overall volume of the detection device, and in addition, the lens with smaller submission is also convenient to integrate into other detection devices.

It will be appreciated that the imaging device may also include other components such as filters, diaphragms, front-end imaging light paths, brackets, light sources, etc.

Generally, lenses and other optical devices in the optical imaging lens are sequentially arranged along an optical axis, and the axial length of the optical imaging lens can be large due to the unreasonable internal structural design of the existing optical imaging lens, so that the optical imaging lens is inconvenient to assemble on imaging equipment and to debug and maintain daily.

Based on this, the embodiments of the present application provide an optical imaging lens, which increases the field of view of an optical system by changing the configuration and layout of a lens group in the optical imaging lens, and particularly adding a negative lens in front of a sensor, and reduces the radial dimension of the lens under the condition of ensuring a large field of view and high resolution, so as to facilitate daily installation and debugging maintenance.

Fig. 1 is a schematic structural diagram of an optical imaging lens 1 according to an embodiment of the present application, in which specific configurations constituting the optical imaging lens 1 are indicated. As shown in fig. 1, the optical imaging lens 1 is configured with seven sets of ten lenses (seven-group-ten-lens) in order from an object side to an image side along an optical axis X, including:

a first lens L1, a second lens L2, a first cemented lens G1, a fifth lens L5, a second cemented lens G2, a third cemented lens G3, and a tenth lens L10,

wherein, the first lens L1, the second lens L2 and the second cemented lens G2 all have positive focal power; the first cemented lens G1, the fifth lens L5, the third cemented lens G3, and the tenth lens L10 all have negative optical power; a diaphragm S is provided between the fifth lens L5 and the second cemented lens G2. In the optical imaging lens 1, the front lens group FF is composed of the first lens L1, the second lens L2, the first cemented lens G1, and the fifth lens L5, and the rear lens group FR is composed of the second cemented lens G2, the third cemented lens G3, and the tenth lens L10. With this configuration, it becomes possible to obtain an excellent optical imaging lens 1 which is compact and excellently corrects various aberrations by changing the configuration and layout of the lens groups in the optical imaging lens, the layout being similar to an inverted wide-angle lens, the first nine lenses being positive group lenses, and the tenth lens being negative group lenses. The wide-angle lens is characterized in that the view field of an object space is large, the structure of the inverted wide-angle lens can ensure that the wide-angle lens has a larger image space view field, so that the magnification is ensured, higher resolution can be realized, meanwhile, due to the fact that the negative lens is additionally arranged in front of the sensor, the light which is only increased near the wide-spectrum light path of the sensor is deflected, the lens group in front can be ensured to have smaller radial dimension, the circumferential dimension of all lenses is not larger than the final image surface dimension, and the radial length of the optical imaging lens 1 is shortened on the premise that the imaging quality and the object space view field are not influenced, so that daily installation, debugging and maintenance are facilitated.

Moreover, the optical imaging lens 1 according to the present embodiment satisfies the conditional expression:

wherein f ₁ ^′ ₀ Represents the focal length, f, of the tenth lens L10 ₁ ^′ _～9 The focal lengths of the first lens L1 to the ninth lens L9 are indicated.

Further, the optical imaging lens satisfies the following conditional expression:

wherein H is ₁ ^′ ₀ Represents the position of the principal surface H of the tenth lens L10 ₁ ^′ _～9 The principal surface positions of the first to ninth lenses L1 to L9 are shown. The two conditions can ensure the focal length and the placement position of the last negative lens, can increase the field of view of the image space to a required range, and are beneficial to balancing aberration and ensuring the image quality.

In order to better achieve the imaging quality, the first lens element L1 has a first object-side surface 11 and a first image-side surface 12, and both the first object-side surface 11 and the first image-side surface 12 are convex. The first object side surface 11 is a convex surface, so that light rays with a large field of view can be collected as much as possible and enter the rear optical system, the light quantity is increased, the collected light rays can be compressed, and the light rays can be stably transited to the rear optical system.

In order to achieve better imaging quality, the second lens L2 has a second object-side surface 21 and a second image-side surface 22, and both the second object-side surface 21 and the second image-side surface 22 are convex.

In order to achieve better imaging quality, the first cemented lens G1 is cemented with a third lens L3 having negative optical power and a fourth lens L4 having positive optical power, i.e., the first cemented lens G1 is a cemented lens.

The cemented lens is used for minimizing chromatic aberration or eliminating chromatic aberration, and the cemented lens can improve image quality and reduce reflection loss of light energy, thereby improving imaging definition.

By introducing a cemented lens composed of a third lens L3 with negative optical power and a fourth lens L4 with positive optical power in the embodiment of the application, the chromatic aberration influence can be eliminated, and the tolerance sensitivity of the system can be reduced; the simultaneously cemented third and fourth lenses L3, L4 may also have residual partial chromatic aberration to balance the overall chromatic aberration of the optical system. In addition, the use of the cemented lens composed of the third lens L3 and the fourth lens L4 can simplify the assembly procedure in the lens manufacturing process, which is advantageous for mass production of lenses.

The third lens element L3 has a third object-side surface 31 and a third image-side surface 32, and the third object-side surface 31 and the third image-side surface 32 are concave;

the fourth lens element L4 has a fourth object-side surface 41 and a fourth image-side surface 42, and the fourth object-side surface 41 and the fourth image-side surface 42 are convex.

In order to better achieve the imaging quality, the fifth lens element L5 has a fifth object-side surface 51 and a fifth image-side surface 52, and the fifth object-side surface 51 and the fifth image-side surface 52 are concave and convex, respectively.

In order to achieve better imaging quality, the second cemented lens G2 is cemented with a sixth lens L6 and a seventh lens L7 having positive optical power, i.e., the second cemented lens G2 is a cemented lens.

By introducing a cemented lens composed of a sixth lens L6 and a seventh lens L7 with positive optical power in the embodiment of the application, the chromatic aberration influence can be eliminated, and the tolerance sensitivity of the system can be reduced; the sixth lens L6 and the seventh lens L7, which are simultaneously cemented, may also have residual partial chromatic aberration to balance the overall chromatic aberration of the optical system. In addition, the use of the cemented lens composed of the sixth lens L6 and the seventh lens L7 can simplify the assembly process in the lens manufacturing process, which is advantageous for mass production of lenses.

The sixth lens element L6 has a sixth object-side surface 61 and a sixth image-side surface 62, wherein the sixth object-side surface 61 and the sixth image-side surface 62 are convex;

the seventh lens element L7 has a seventh object-side surface 71 and a seventh image-side surface 72, wherein the seventh object-side surface 71 and the seventh image-side surface 72 are concave and convex, respectively.

In the embodiment of the application, the first lens L1, the second lens L2 and the second cemented lens G2 all have positive focal power, which is favorable for converging light, and making the diverging light smoothly enter the rear optical system after being folded, which is favorable for realizing miniaturization of the system, wherein the second lens L2 and the second cemented lens G2 can also balance spherical aberration introduced by the front lens, and improve the overall imaging quality of the lens.

In order to achieve better imaging quality, the third cemented lens G3 is cemented with an eighth lens L8 and a ninth lens L9 having negative optical power, i.e., the third cemented lens G3 is a cemented lens.

By introducing a cemented lens composed of an eighth lens L8 and a ninth lens L9 with negative optical power in the embodiment of the application, the chromatic aberration influence can be eliminated, and the tolerance sensitivity of the system can be reduced; the eighth lens L8 and the ninth lens L9, which are simultaneously cemented, may also have residual partial chromatic aberration to balance the overall chromatic aberration of the optical system. In addition, the use of the cemented lens composed of the eighth lens L8 and the ninth lens L9 can simplify the assembly procedure in the lens manufacturing process, which is advantageous for mass production of lenses.

The eighth lens element L8 has an eighth object-side surface 81 and an eighth image-side surface 82, wherein the eighth object-side surface 81 and the eighth image-side surface 82 are concave and convex, respectively;

the ninth lens element L9 has a ninth object-side surface 91 and a ninth image-side surface 92, and the ninth object-side surface 91 and the ninth image-side surface 92 are concave and convex, respectively.

In order to achieve better imaging quality, the eighth lens L8 is a positive meniscus lens, and the ninth lens L9 is a negative meniscus lens. Further, the eighth lens L8 and the ninth lens L9 are meniscus lenses protruding toward the image side, so that the light can be further diffused into the rear optical system, and the light flux of the system is increased; and effectively compensates for spherical aberration introduced by the front lens.

In order to achieve better imaging quality, the tenth lens L10 has a tenth object-side surface 101 and a tenth image-side surface 102, and the tenth object-side surface 101 and the tenth image-side surface 102 are concave and convex, respectively.

The sensor can adopt a high-resolution large-target-surface camera, in the example, a linear array camera is adopted, the pixel size is 5 mu m, the pixel is 13312 multiplied by 128, the target surface is 66mm, and the magnification of the lens is 2 multiplied, so that the resolution of an object space can be resolved by the lens matched with the camera by 2.5 mu m.

The embodiment of the application also discloses imaging equipment, which comprises the optical imaging lens and an imaging device, wherein the imaging device is used for converting an optical image formed by the optical imaging lens into a digital signal. The imaging apparatus of the present embodiment correspondingly includes the optical imaging lens 1 in any of the above embodiments, and its implementation principle and technical effects are similar, and will not be described here again.

Referring to fig. 5, the embodiment of the present application further discloses an edge three-face detection device, including the edge three-face detection optical system 10, a holding mechanism and a photographing mechanism 40 as described above, where the photographing mechanism 40 includes a camera 401 and an optical imaging lens 402 disposed between the camera 401 and the edge three-face detection optical system 10, and the holding mechanism holds the edge three-face detection optical system 10 at a preset position, so that the light generated by the arc-shaped light source 30 is projected onto a first edge face, a second edge face and a side surface, then the images of the first edge face, the second edge face and the side surface are converged on the object side of the optical imaging lens 402 via respective optical paths, then converged and projected on the image side after refraction of each lens, and finally received by the camera 401. The edge three-sided detection device of the present embodiment correspondingly includes the optical imaging lens 402 in any of the above embodiments, and its implementation principle and technical effects are similar, and will not be repeated here.

Specifically, referring to fig. 5 and 6, the arc-shaped light source 30 is configured to supplement light to the product 50 to be measured, the product 50 to be measured has a first surface, a second surface 502 and a side surface 503 facing away from each other, the first surface and the second surface 502 have a first edge surface and a second edge surface at respective peripheral edges, the side surface 503 is connected between the first edge surface and the second edge surface, and the arc-shaped light source 30 includes:

an arc-shaped base 301 having an outer surface and an inner surface opposite to each other, and in a preferred embodiment, the arc-shaped base 301 further has an upper surface 313 and a lower surface 314 opposite to each other, and a left surface 315 and a right surface 316 opposite to each other, the outer surface 311, the inner surface 312, the upper surface 313, the lower surface 314, the left surface 315 and the right surface 316 being sequentially enclosed to form the arc-shaped base 301, and an interior of the arc-shaped base 301 may be solid or hollow;

a light emitting unit 302, as shown in fig. 5, in one embodiment, the light emitting unit 302 is disposed inside the arc-shaped base 301 such that light of the light emitting unit 302 is emitted outward through the inner surface 312, and in another embodiment, the light emitting unit 302 is attached to the inner surface 312;

wherein the inner surface 312 is a concave arc or sphere such that the inner surface 312 is equidistant from the upper surface 313 and the lower surface 314. In the embodiment shown in fig. 5, the inner surface 312 is a concave curved surface and the outer surface 311 is a convex curved surface, which is provided for the first and second surfaces 502 of the product 50 to be planar, although not shown here, it should be understood by those skilled in the art that the inner surface 312 may be provided as a concave spherical surface depending on whether the first and second surfaces 502 are convex spherical surfaces, as long as the inner surface 312 is equidistant from the first and second surfaces 502.

In a preferred embodiment, the light emitting unit 302 may be a plurality of LED point light sources arranged according to a predetermined rule.

As shown in fig. 5 or 6, when a part of the light emitting unit 302 is disposed inside the arc-shaped base 301, another part of the light emitting unit 302 is attached to the inner surface 312, in order to allow light to be emitted from the inside of the arc-shaped base 301, the part of the inner surface 312 is made of a transparent or semitransparent material; alternatively, when all the light emitting units 302 are disposed inside the arc-shaped base 301, the portion of the inner surface 312 opposite to the light emitting units 302 is made of a transparent or translucent material in order to allow light to be emitted from the inside of the arc-shaped base 301.

Further, the light emitting unit 302 includes an upper light source 321, a lower light source 323, and a middle light source 322 disposed between the upper light source 321 and the lower light source 323, where light from the upper light source 321 is at least partially directed to the first edge surface 511, light from the lower light source 323 is at least partially directed to the second edge surface 521, and light from the middle light source 322 is at least partially directed to the side surface 503.

In one embodiment, the upper light source 321, the middle light source 322 and the lower light source 323 are continuously transited, so that the distance between the upper light source 321 and the first edge surface is equal to the distance between the lower light source 323 and the second edge surface 521, and the uniform irradiation of the peripheral edge of the product 50 can be realized by setting the upper light source 321, the middle light source 322 and the lower light source 323 at the same illumination intensity, so as to obtain a better light supplementing effect.

Since the optical imaging lens 1 is similar in structure to an inverted wide-angle lens by changing the configuration and layout of lens groups in the optical imaging lens, the first nine lenses serve as positive group lenses and the tenth lens serves as a negative group lens. The wide-angle lens is characterized in that the view field of the object space is large, the structure of the inverted wide-angle lens can ensure that the wide-angle lens has a larger image space view field, so that the magnification is ensured, higher resolution can be realized, meanwhile, as a negative lens is additionally arranged in front of the sensor, only the light beam which is close to the sensor and is increased in a wide beam splitting way is deflected, the lens group in front can be ensured to have smaller radial dimension, and the circumferential dimension of all lenses is not larger than the final image surface dimension, so that the radial length of the optical imaging lens 1 is shortened on the premise that the imaging quality and the object space view field are not influenced, so that the daily installation, debugging and maintenance are facilitated, and the imaging equipment with the optical imaging lens 1 also has the advantages.

Example 1

Referring to fig. 1 and 2 for a schematic structural diagram of an optical imaging lens 1, the optical imaging lens 1 provided in this embodiment adopts a remote structure, and a negative lens is added at a position close to a camera to increase a field of view, wherein relevant parameters of each lens are shown in table 1.

Table 1:

various parameters associated with the optical imaging lens 1 according to the first embodiment are listed in table 1. In the respective tables for the various parameters, "mm" is generally used for length units such as focal length, radius of curvature, and distance to the next lens surface. However, since similar optical performance can be obtained by an optical system that proportionally enlarges or reduces its size, the unit is not necessarily limited to "mm", and any other suitable unit may be used. Additionally, the radius of curvature "infinite" represents a flat surface, and the refractive index nd=1.00000 of air is omitted. The interpretation of the above parameters is the same in other examples.

The structure diagram, the MTF curve and the point column diagram of the optical imaging lens 1 provided in this embodiment are shown in fig. 3 and fig. 4, respectively, and it can be seen from fig. 3 and fig. 4 that the imaging quality of the optical imaging lens 1 in this embodiment is close to the diffraction limit, which indicates that the imaging quality is good, and in fig. 3, the MTF is greater than 0.2 at 100lp/mm (logarithmic per mm line), which can be matched with a camera with a pixel size of 5 μm, and the point column diagram of fig. 4 indicates that the size of the focusing light spot is within the airy spot, which also indicates that the imaging quality is good.

The lens can achieve the same effect by only changing the radius thickness and the material without changing the structure.

Example two

Referring to fig. 1 and 2 for a schematic structural diagram of an optical imaging lens 1, relevant parameters of each lens in the optical imaging lens 1 provided in the embodiment are shown in table 2.

Table 2:

the number of equipment and the scale of processing described herein are intended to simplify the description of the present utility model. Applications, modifications and variations of the present utility model will be readily apparent to those skilled in the art.

The features of the different implementations described herein may be combined to form other examples not specifically stated above. The components may be left out of the structures described herein without adversely affecting their operation. Furthermore, various individual components may be combined into one or more individual components to perform the functions described herein.

Furthermore, although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown, but rather is well suited to various fields of use as the utility model, and further modifications may be readily apparent to those skilled in the art, without departing from the general concepts defined by the claims and the equivalents thereof, and therefore the utility model is not limited to the specific details and illustrations shown and described herein.

Claims

1. An optical imaging lens characterized by comprising, in order from an object side to an image side along an optical axis (X):

a first lens (L1), a second lens (L2), a first cemented lens (G1), a fifth lens (L5), a second cemented lens (G2), a third cemented lens (G3) and a tenth lens (L10),

wherein the first lens (L1), the second lens (L2) and the second cemented lens (G2) all have positive optical power; the first cemented lens (G1), the fifth lens (L5), the third cemented lens (G3) and the tenth lens (L10) all have negative optical power; an aperture (S) is arranged between the fifth lens (L5) and the second cemented lens (G2).

2. The optical imaging lens as claimed in claim 1, wherein the first lens element (L1) has a first object-side surface (11) and a first image-side surface (12), and the first object-side surface (11) and the first image-side surface (12) are both convex.

3. The optical imaging lens as claimed in claim 1, wherein the second lens (L2) has a second object side surface (21) and a second image side surface (22), and the second object side surface (21) and the second image side surface (22) are both convex.

4. The optical imaging lens as claimed in claim 1, wherein the first cemented lens (G1) is cemented by a third lens (L3) having negative optical power and a fourth lens (L4) having positive optical power,

the third lens (L3) is provided with a third object side surface (31) and a third image side surface (32), and the third object side surface (31) and the third image side surface (32) are concave surfaces;

the fourth lens element (L4) has a fourth object-side surface (41) and a fourth image-side surface (42), and both the fourth object-side surface (41) and the fourth image-side surface (42) are convex.

5. The optical imaging lens as claimed in claim 1, wherein the fifth lens element (L5) has a fifth object-side surface (51) and a fifth image-side surface (52), and the fifth object-side surface (51) and the fifth image-side surface (52) are concave and convex, respectively.

6. The optical imaging lens as claimed in claim 1, wherein the second cemented lens (G2) is cemented by a sixth lens (L6) and a seventh lens (L7) having positive optical power,

wherein the sixth lens (L6) has a sixth object-side surface (61) and a sixth image-side surface (62), and both the sixth object-side surface (61) and the sixth image-side surface (62) are convex surfaces;

the seventh lens (L7) has a seventh object-side surface (71) and a seventh image-side surface (72), and the seventh object-side surface (71) and the seventh image-side surface (72) are concave and convex, respectively.

7. The optical imaging lens according to any one of claims 1 to 6, wherein the third cemented lens (G3) is cemented by an eighth lens (L8) and a ninth lens (L9) having negative optical power,

wherein the eighth lens element (L8) has an eighth object-side surface (81) and an eighth image-side surface (82), and the eighth object-side surface (81) and the eighth image-side surface (82) are concave and convex, respectively;

the ninth lens (L9) has a ninth object-side surface (91) and a ninth image-side surface (92), and the ninth object-side surface (91) and the ninth image-side surface (92) are concave and convex, respectively.

8. The optical imaging lens as claimed in claim 7, wherein the eighth lens (L8) is a positive meniscus lens and the ninth lens (L9) is a negative meniscus lens.

9. The optical imaging lens as claimed in claim 7, wherein the tenth lens (L10) has a tenth object-side surface (101) and a tenth image-side surface (102), the tenth object-side surface (101) and the tenth image-side surface (102) being concave and convex, respectively.

10. The optical imaging lens as claimed in claim 7, wherein the optical imaging lens satisfies a conditional expression:

wherein f' ₁₀ Represents the focal length, f 'of the tenth lens (L10)' _1～9 Represents the focal length of the first lens (L1) to the ninth lens (L9).

11. The optical imaging lens as claimed in claim 7, wherein the optical imaging lens satisfies a conditional expression:

wherein H' ₁₀ Represents the position of the principal surface, H ', of the tenth lens (L10)' _1～9 Represents the main surface positions of the first to ninth lenses (L1) to (L9).

12. An imaging apparatus comprising the optical imaging lens according to any one of claims 1 to 11 and an imaging device for converting an optical image formed by the optical imaging lens into a digital signal.