TWI611236B - Imaging lens - Google Patents

Abstract

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, and a ninth lens which are sequentially arranged from the magnification side to the reduction side a tenth lens and an eleventh lens, wherein the first lens, the fourth lens, the fifth lens, the seventh lens, the eighth lens, the ninth lens, and the eleventh lens respectively have a positive refracting power, a second lens, and a third lens The lens, the sixth lens, and the tenth lens each have a negative refracting power. This imaging lens provides good image quality.

Description

Imaging lens

The present invention relates to an optical component, and more particularly to an imaging lens.

The image capturing device (for example, a camera) mainly captures an image of the object side by using an imaging lens and an image sensing component, wherein the imaging lens can be used to focus the light beam from the object side on the image sensing component, and the image sensing device The component is used to sense an image. In order to fully demonstrate the performance of the image sensing element, it is necessary to use a good imaging lens. Generally speaking, a good imaging lens needs to have low distortion, low aberration, and high resolution. ……Etc. Therefore, how to design an imaging lens that provides good imaging quality is a big problem for designers.

The present invention provides an imaging lens to provide good imaging quality.

In order to achieve the above advantages, the present invention provides an imaging lens including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens which are sequentially arranged from the magnification side to the reduction side. The eighth lens, the ninth lens, the tenth lens, and the eleventh lens, wherein the first lens, the fourth lens, the fifth lens, the seventh lens, the eighth lens, the ninth lens, and the eleventh lens respectively have positive The diopter, the second lens, the third lens, the sixth lens, and the tenth lens respectively have negative refracting power.

In an embodiment of the invention, the first lens has a convex surface facing the magnification side, and the first lens is a meniscus convex lens or a plano-convex lens, the second lens has a concave surface facing the reduction side, and the second lens has a meniscus type. a concave lens, the third lens has a concave surface facing the reduction side, and the third lens is a plano-concave lens or a meniscus concave lens, the fourth lens is a lenticular lens or a meniscus convex lens, and the fifth lens is a meniscus convex lens, a sixth lens Forming a first composite lens with the seventh lens, and the joint surface of the sixth lens and the seventh lens is a curved surface, the eighth lens is a plano-convex lens, a lenticular lens or a meniscus convex lens, the ninth lens is a lenticular lens, and the tenth lens is The eleventh lens constitutes a second composite lens, and a joint surface of the tenth lens and the eleventh lens is a curved surface.

In an embodiment of the invention, the sixth lens has a concave surface facing the magnification side, and the seventh lens has a convex surface facing the reduction side.

In an embodiment of the invention, the tenth lens has a concave surface facing the magnification side, and the eleventh lens has a convex surface facing the reduction side.

In an embodiment of the invention, the imaging lens further includes an aperture stop disposed between the fifth lens and the sixth lens.

In an embodiment of the invention, the imaging lens includes a twelfth lens disposed at one of the following positions: between the first lens and the second lens, between the second lens and the third lens, and the third lens Between the fourth lens, the fourth lens and the fifth lens, the fifth lens and the aperture stop, and between the aperture stop and the sixth lens.

In an embodiment of the invention, the twelfth lens is disposed between the first lens and the second lens, between the third lens and the fourth lens, or between the aperture stop and the sixth lens, twelfth Lens has positive diopter

In an embodiment of the invention, when the twelfth lens is disposed between the first lens and the second lens, the material of the twelfth lens comprises a bismuth glass.

In an embodiment of the present invention, the material of the first lens is not limited, and includes, for example, flint glass or bismuth glass, the material of the second lens includes heavy flint glass, and the material of the third lens includes heavy flint glass. The material of the four lens includes a light glass, the material of the fifth lens includes heavy flint glass, the material of one of the sixth lens and the seventh lens includes heavy flint glass, and the materials of the sixth lens and the seventh lens include The light glass, the material of one of the eighth lens and the ninth lens includes heavy flint glass, and the material of the eighth lens and the ninth lens includes the glass, one of the tenth lens and the eleventh lens. Including heavy flint glass, the tenth lens and the eleventh lens of the other material include light glass.

In an embodiment of the invention, the imaging lens has a full field of view between 50 degrees and 180 degrees.

The imaging lens of the present invention includes eleven lenses, and since the lenses arranged on the magnification side to the reduction side have diopter, and have positive, negative, negative, positive, positive, negative, positive, positive, positive, negative according to the order, respectively. Positive diopter, so this imaging lens can provide good imaging quality.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

The imaging lens of the embodiments of the present invention can be applied to a static or dynamic image capturing device, including a camera, a camera, a monitoring device, a machine vision device, and the like, but is not limited thereto. For example, an imaging lens can also be applied to a projection device. Several embodiments of the imaging lens of the present invention will be described in detail below.

1 is a schematic view of an imaging lens according to an embodiment of the present invention. Referring to FIG. 1, the imaging lens 100 can be used as a fixed focus lens, which includes a first lens G1, a second lens G2, a third lens G3, a fourth lens G4, and a fifth, which are sequentially arranged from the magnification side to the reduction side. The lens G5, the sixth lens G6, the seventh lens G7, the eighth lens G8, the ninth lens G9, the tenth lens G10, and the eleventh lens G11, wherein the first lens G1, the fourth lens G4, the fifth lens G5, The seventh lens G7, the eighth lens G8, the ninth lens G9, and the eleventh lens G11 respectively have positive refracting power, and the second lens G2, the third lens G3, the sixth lens G6, and the tenth lens G10 respectively have negative refracting power. When the imaging lens 100 is applied to the image capturing device, the component P disposed on the reduction side is, for example, an image sensing component of the image capturing device, and the imaging lens 100 is configured to image the object on the magnification side to the image sensing component. When the imaging lens 100 is applied to a projection device, the component P disposed on the reduction side is, for example, a light valve of a projection device, and the imaging lens 100 is used to project an image beam from the light valve to a screen on the magnification side. on.

The imaging lens 100 of the present embodiment further includes, for example, an aperture stop SA disposed between the fifth lens G5 and the fifth lens G6.

The first lens G1 has, for example, a convex surface facing the magnification side, and the first lens G1 is a meniscus convex lens or a plano-convex lens. For example, the first lens G1 of the present embodiment is, for example, a meniscus type convex lens, the surface S1 of the first lens G1 facing the magnification side is a convex curved surface, and the surface S2 facing the reduction side is a concave curved surface. Further, the material of the first lens G1 may be selected from flint glass or bismuth glass, but is not limited thereto. In another embodiment, the first lens G1 is, for example, a plano-convex lens, the surface of the first lens G1 facing the magnification side is a convex curved surface, and the surface facing the reduction side is a plane. In addition, in another embodiment, the first lens G1 may also be a lenticular lens, that is, the surface S1 facing the magnification side of the first lens G1 and the surface S2 facing the reduction side are, for example, convex curved surfaces. In addition, in another embodiment, the first lens G1 may also have a convex surface facing the reduction side, and the first lens G1 is a meniscus convex lens, a plano-convex lens or other convex lens.

In order to change the light beam passing through the first lens G1 from contraction to diffusion, it is necessary to select a strong refractive power (a strong refractive power, generally refers to a glass having a higher refractive index, for example, a refractive index higher than 1.8, Or a second lens G2 having a strong refractive power type, for example, a lenticular lens having a small radius of curvature, and a second lens G2 may be a meniscus concave lens, and the second lens G2 may have a concave surface toward the reduction side. Specifically, the surface S3 of the second lens G2 of the present embodiment facing the magnification side is a convex curved surface, and the surface S4 facing the reduction side is a concave curved surface. In addition, the material of the second lens G2 may be selected from a material having a high refractive index (where the material of high refractive index generally refers to a refractive index greater than 1.7), and the contracted light beam may be diffused. In an embodiment, the second lens The material of G2 can be selected from nitrate. For example, the material of the second lens G2 includes, for example, heavy flint glass. In another embodiment, the second lens G2 is, for example, a plano-concave lens, the surface of the second lens G2 facing the magnification side is a plane, and the surface facing the reduction side is a concave curved surface. In another embodiment, the second lens G2 may also be a double concave lens, that is, the surface S3 facing the magnification side of the second lens G2 and the surface S4 facing the reduction side are, for example, concave curved surfaces.

The third lens G3 has, for example, a concave surface toward the reduction side, and the third lens G3 is a plano-concave lens or a meniscus type concave lens. For example, the third lens G3 of the present embodiment is a plano-concave lens, the surface S5 of the third lens G3 facing the magnification side is a plane, and the surface S6 facing the reduction side is a concave curved surface. In addition, the material of the third lens G3 may be selected from flint glass. In one embodiment, the material of the third lens G3 is, for example, heavy flint glass, which can be used to correct chromatic aberration, but is not limited thereto. In addition, in other embodiments, the third lens G3 may also be a meniscus concave lens or a double concave lens depending on design requirements.

The fourth lens G4 and the fifth lens G5 are used to contract the diffused light beam, the fourth lens G4 is, for example, a lenticular lens or a meniscus convex lens, and the fifth lens G5 is, for example, a meniscus type convex lens. Specifically, the fourth lens G4 of the present embodiment is, for example, a lenticular lens, that is, the surface S7 facing the magnification side of the fourth lens G4 and the surface S8 facing the reduction side are, for example, convex curved surfaces. In addition, the material of the fourth lens G4 can be selected as a bismuth glass, and the material of the fourth lens G4 using a bismuth glass can also reduce the cost. In an embodiment, the material of the fourth lens G4 is, for example, a light glass. In addition, in other embodiments, the fourth lens G4 may also be a meniscus convex lens, a plano-convex lens or other convex lens.

The surface S9 facing the magnification side of the fifth lens G5 of the present embodiment is, for example, a convex curved surface, and the surface S10 facing the reduction side is a concave curved surface. In addition, the material of the fifth lens G5 may be made of a material of heavy flint glass, and the contracted light beam may be diffused. For example, the material of the fifth lens G5 includes, for example, heavy flint glass. In another embodiment, the fifth lens G5 may also be a plano-convex lens depending on design requirements.

The sixth lens G6 and the seventh lens G7 constitute, for example, the first composite lens C1, and the joint surface S12 of the sixth lens G6 and the seventh lens G7 is a flat surface or a curved surface. For example, the joint surface S12 of the present embodiment is a curved surface convex toward the enlarged side, and the sixth lens G6 and the seventh lens G7 respectively have, for example, a surface curved toward the reduction side, that is, the sixth lens G6 has a concave surface (surface S11). Toward the magnification side, the seventh lens G7 has a convex surface (surface S13) facing the reduction side, wherein the concave surface is, for example, a concave curved surface, and the convex surface is, for example, a convex curved surface. Further, the sixth lens G6 and the seventh lens G7 constitute a first composite lens C1 by, for example, gluing.

In addition, the above-mentioned joint surface S12 can also be adjusted in accordance with the case where the light beam enters the yoke from the aperture stop SA (here, 瞳 generally refers to the aperture stop, and the portion before the aperture stop is the entrance pupil, and the portion after the aperture stop is The joint surface S12 is formed as a curved surface or a flat surface on the convex side.

The material of the sixth lens G6 and the seventh lens G7 may be a combination of two types of glass having a large difference in refractive index and dispersion coefficient. For example, the difference in refractive index between the materials of the sixth lens G6 and the seventh lens G7 is greater than 0.2, and the Abbe number difference between the materials of the sixth lens G6 and the seventh lens G7 is greater than 20. Specifically, the material of one of the sixth lens G6 and the seventh lens G7 includes, for example, flint glass, and the material of the other of the sixth lens G6 and the seventh lens G7 includes, for example, a light glass. For example, the material of the sixth lens G6 is, for example, flint glass, and the material of the seventh lens G7 is, for example, light glass. In another embodiment, the material of the sixth lens G6 is, for example, a light glass, and the material of the seventh lens G7 is, for example, flint glass. Further, in an embodiment, the flint glass is, for example, heavy flint glass.

In addition, in other embodiments, the joint surface S12 may be a curved surface or a flat surface on the convex side.

The eighth lens G8 is, for example, a plano-convex lens, a lenticular lens, or a meniscus type convex lens. Specifically, the eighth lens G8 of the present embodiment is, for example, a plano-convex lens, and the surface S14 of the eighth lens G8 facing the magnification side is, for example, a convex curved surface. The surface S15 facing the reduction side is a flat surface. In addition, in other embodiments, the eighth lens G8 may also be a lenticular lens or a meniscus convex lens depending on design requirements.

The ninth lens G9 is, for example, a lenticular lens or a meniscus type convex lens. Specifically, the ninth lens G9 of the present embodiment is, for example, a lenticular lens, that is, a surface S16 facing the magnification side of the ninth lens G9 and a surface S17 facing the reduction side. For example, they are all convex surfaces. In another embodiment, the ninth lens G9 may also be a meniscus convex lens or a plano-convex lens.

The material of one of the eighth lens G8 and the ninth lens G9 includes heavy flint glass, and the material of the other of the eighth lens G8 and the ninth lens G9 includes bismuth glass. For example, the material of the eighth lens G8 is, for example, heavy flint glass, and the material of the ninth lens G9 is, for example, bismuth glass. In another embodiment, the material of the eighth lens G8 is, for example, a neodymium glass, and the material of the ninth lens G9 is, for example, heavy flint glass.

The tenth lens G10 and the eleventh lens G11 constitute, for example, the second compound lens C2, and the joint surface S19 of the tenth lens G10 and the eleventh lens G11 is a flat surface or a curved surface. For example, the joint surface S19 of the present embodiment is a convex surface convex toward the enlarged side, and the tenth lens G10 and the eleventh lens G11 have, for example, one surface curved toward the reduction side, that is, the tenth lens G10 has a concave surface (surface S18). The first eleventh lens G11 has a convex surface (surface S20) facing the reduction side, wherein the concave surface is, for example, a concave curved surface, and the convex surface is, for example, a convex curved surface. Further, the tenth lens G10 and the eleventh lens G11 constitute a second composite lens C2 by, for example, gluing.

The material of the tenth lens G10 and the eleventh lens G11 may be a combination of two types of glass having a large difference in refractive index and dispersion coefficient. For example, the refractive index difference between the materials of the tenth lens G10 and the eleventh lens G11 is greater than 0.2, and the Abbe number difference of the materials of the tenth lens G10 and the eleventh lens G11 is greater than 20. Specifically, the material of one of the tenth lens G10 and the eleventh lens G11 includes, for example, heavy flint glass, and the other material of the tenth lens G10 and the eleventh lens G11 includes, for example, a light glass. For example, the material of the tenth lens G10 is, for example, heavy flint glass, and the material of the eleventh lens G11 is, for example, light glass. In another embodiment, the material of the tenth lens G10 is, for example, a light glass, and the material of the eleventh lens G11 is, for example, heavy flint glass.

Further, in other embodiments, the above-described joint surface S19 may be formed as a curved surface or a flat surface on the convex side.

The first lens G1, the fourth lens G4, the fifth lens G5, the seventh lens G7, the eighth lens G8, the ninth lens G9, and the eleventh lens G11 listed above may be replaced with other types of concave lenses depending on design requirements. For example: meniscus concave lens, plano-concave lens, and double concave lens. Further, the second lens G2, the third lens G3, the sixth lens G6, and the tenth lens listed above may be replaced with other types of convex lenses, such as a meniscus convex lens, a plano-convex lens, and a lenticular lens, depending on design requirements. In addition, the full field of view of the imaging lens 100 of the present embodiment is, for example, between 50 degrees and 180 degrees, but is not limited thereto.

The imaging lens 100 of the present embodiment includes eleven lenses, and since the lenses arranged on the magnification side to the reduction side have diopter, and have positive, negative, negative, positive, positive, negative, positive, positive, positive according to the order, respectively. , negative, positive diopter, so this imaging lens can provide good imaging quality.

One embodiment of each parameter of the imaging lens 100 will be described in Table 1. It should be noted that the data listed in Table 1 is not intended to limit the present invention, and any person having ordinary knowledge in the art can make appropriate changes to its parameters or settings after referring to the present invention, but it should still be It is within the scope of the invention.

Table I         <TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr><td> component </td><td> surface </td><td> radius of curvature (mm) </td><td> spacing (mm) </td><td> refractive index</td><td> Abbe number </td></tr><tr><td> G1 < /td><td> S1 </td><td> 58 </td><td> 9 </td><td> 1.5168 </td><td> 64.2 </td></tr><tr> <td> S2 </td><td> 214 </td><td> 0.1 </td><td> </td><td> </td></tr><tr><td> G2 < /td><td> S3 </td><td> 61 </td><td> 2 </td><td> 1.9229 </td><td> 20.88 </td></tr><tr> <td> S4 </td><td> 23 </td><td> 10 </td><td> </td><td> </td></tr><tr><td> G3 < /td><td> S5 </td><td> Plane</td><td> 1.8 </td><td> 1.8016 </td><td> 44.28 </td></tr><tr> <td> S6 </td><td> 32 </td><td> 33.6 </td><td> </td><td> </td></tr><tr><td> G4 < /td><td> S7 </td><td> 196 </td><td> 7.5 </td><td> 1.5935 </td><td> 67.33 </td></tr><tr> <td> S8 </td><td> -44.5 </td><td> 0.1 </td><td> </td><td> </td></tr><tr><td> G5 </td><td> S9 </td><td> 45 </td><td> 4.1 </td><td> 1.9229 </td><td> 20.88 </td></tr><tr ><td> S10 < /td><td> 95.3 </td><td> 23.3 </td><td> </td><td> </td></tr><tr><td> SA </td><td > SA </td><td> Infinity</td><td> 6 </td><td> </td><td> </td></tr><tr><td> G6 </ Td><td> S11 </td><td> -35 </td><td> 1.8 </td><td> 1.9037 </td><td> 31.32 </td></tr><tr> <td> S12 </td><td> 27.8 </td><td> 7.8 </td><td> </td><td> </td></tr><tr><td> G7 < /td><td> S13 </td><td> -27.8 </td><td> 0.1 </td><td> 1.4875 </td><td> 70.42 </td></tr><tr ><td> G8 </td><td> S14 </td><td> 74.8 </td><td> 3 </td><td> 1.9229 </td><td> 20.88 </td>< /tr><tr><td> S15 </td><td> Plane</td><td> 0.1 </td><td> </td><td> </td></tr><tr ><td> G9 </td><td> S16 </td><td> 42.9 </td><td> 5.8 </td><td> 1.713 </td><td> 53.87 </td>< /tr><tr><td> S17 </td><td> -42.9 </td><td> 0.1 </td><td> </td><td> </td></tr>< Tr><td> G10 </td><td> S18 </td><td> -72.4 </td><td> 1.9 </td><td> 1.8052 </td><td> 25.47 </td ></tr><tr><td> G11 </td><td> S19 </td><td> 20.2 </td><td> 6.7 </td><td> 1.4875 </td><td > 70.42 </td></tr><tr><td> S20 </td><td> -135 .4 </td><td> 38.55 </td><td> </td><td> </td></tr></TBODY></TABLE>

The pitch referred to in Table 1 is the linear distance of two adjacent surfaces on the optical axis 150 of the imaging lens 100. For example, the pitch of the surface S1 is the linear distance between the surface S1 and the surface S2 on the optical axis 150, and the distance between the surface S20 is the linear distance between the surface S20 and the component P on the optical axis 150. A surface having a positive radius of curvature represents a surface whose surface is curved toward the enlarged side and whose radius of curvature is negative, representing that the surface is curved toward the reduced side.

2A is an astigmatism and field curvature diagram of an embodiment of the imaging lens of FIG. 1, FIG. 2B is a distortion diagram of an embodiment of the imaging lens of FIG. 1, and FIG. 2C is an embodiment of the imaging lens of FIG. Modulation transfer function diagram. As shown in FIGS. 2A to 2C, the imaging lens 100 of the present embodiment can provide a good image quality.

In other embodiments, the spacing between the lenses, the spacing between the lens and the magnification side, and the spacing between the lens and the reduction side can be adjusted according to design requirements to accommodate one or more other lenses, and can be configured in the following locations. One of them: between the magnification side and the first lens G1, between the first lens G1 and the second lens G2, between the third lens G3 and the fourth lens G4, between the fourth lens G4 and the fifth lens G5, The fifth lens G5 is between the aperture stop SA and the aperture stop SA and the sixth lens G6. Specifically, one or more lenses may be provided at each of the above positions. A variety of different embodiments will be described below in conjunction with the drawings.

3 is a schematic view of an imaging lens according to another embodiment of the present invention. Referring to FIG. 3, the imaging lens 100a of the present embodiment is similar to the imaging lens 100 of FIG. 1. The main difference is that the imaging lens 100a further includes a twelfth lens G12 disposed between the first lens G1 and the second lens G2. .

In the present embodiment, the twelfth lens G12 has, for example, a positive refracting power, so in some super-large aperture or wide-angle application examples, the imaging lens 100a can be used to eliminate residual aberrations generated after the diffused light beam. Specifically, the twelfth lens G12 of the present embodiment is a meniscus type convex lens, wherein the surface S21 of the twelfth lens G12 facing the magnification side is a convex curved surface, and the surface S22 of the twelfth lens G12 facing the reduction side is The concave curved surface, in addition, in other embodiments, the twelfth lens G12 is not limited to the meniscus convex lens, and the twelfth lens G12 may be other types of convex lenses, such as plano-convex lenses and lenticular lenses. Further, as shown in FIG. 3, the third lens G3' of the present embodiment is, for example, a meniscus type concave lens, that is, the surface S5' of the third lens G3' facing the magnification side is, for example, a convex curved surface, and the surface S6 facing the reduction side. 'For example, it is a concave curved surface, but other types of concave lenses may be used. However, other types of concave lenses may be used, such as a plano-concave lens and a biconcave lens. On the other hand, the eighth lens G8' of the present embodiment is, for example, a lenticular lens, that is, the surface S14' facing the magnification side of the eighth lens G8' and the surface S15' facing the reduction side are, for example, convex curved surfaces, but may be Other types of convex lenses are, for example, meniscus convex lenses and plano-convex lenses. In addition, in other embodiments, the twelfth lens G12 may be disposed between the first lens G1 and the magnification side, or a lens having a positive refracting power may be added to each of the two sides of the first lens G1.

Further, the twelfth lens G12 is disposed between the first lens G1 and the magnification side or between the first lens G1 and the second lens G2, and the material of the twelfth lens G12 includes, for example, bismuth glass. In an embodiment, the bismuth glass comprises a light glass or a fluorocarbon glass, and is not limited thereto.

Table 2 will show an embodiment of the parameters of the imaging lens 100a. It should be noted that the data listed in Table 2 is not intended to limit the present invention, and any person having ordinary knowledge in the art can make appropriate changes to its parameters or settings after referring to the present invention, but it should still be It is within the scope of the invention.

Table II         <TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr><td> component </td><td> surface </td><td> radius of curvature (mm) </td><td> spacing (mm) </td><td> refractive index</td><td> Abbe number</td></tr><tr><td> G1 </td>< Td> S1 </td><td> 62.3 </td><td> 7.2 </td><td> 1.6173 </td><td> 64.2 </td></tr><tr><td> S2 </td><td> 120 </td><td> 0.1 </td><td> </td><td> </td></tr><tr><td> G12 </td>< Td> S21 </td><td> 72.6 </td><td> 4.7 </td><td> 1.6224 </td><td> 63.4 </td></tr><tr><td> S22 </td><td> 115 </td><td> 0.1 </td><td> </td><td> </td></tr><tr><td> G2 </td>< Td> S3 </td><td> 61.5 </td><td> 1.8 </td><td> 1.9459 </td><td> 18.2 </td></tr><tr><td> S4 </td><td> 21.3 </td><td> 9.6 </td><td> </td><td> </td></tr><tr><td> G3' </td> <td> S5' </td><td> 605 </td><td> 1.8 </td><td> 1.882 </td><td> 40.86 </td></tr><tr><td > S6' </td><td> 31.5 </td><td> 34.5 </td><td> </td><td> </td></tr><tr><td> G4 </ Td><td> S7 </td><td> 280 </td><td> 6.9 </td><td> 1.5839 </td><td> 65.98 </td></tr><tr>< Td> S8 </td><td> -42 </td><td> 3.1 </td><td> </td><td> </td></tr><tr><td> G5 </td> <td> S9 </td><td> 42.7 </td><td> 4.5 </td><td> 1.9349 </td><td> 19.81 </td></tr><tr><td> S10 </td><td> 92.7 </td><td> 19.3 </td><td> </td><td> </td></tr><tr><td> SA </td> <td> SA </td><td> Infinity</td><td> 6.7 </td><td> </td><td> </td></tr><tr><td> G6 </td><td> S11 </td><td> -42.3 </td><td> 3.3 </td><td> 1.9035 </td><td> 28.47 </td></tr>< Tr><td> S12 </td><td> 24.9 </td><td> 7.7 </td><td> </td><td> </td></tr><tr><td> G7 </td><td> S13 </td><td> -36.4 </td><td> 0.1 </td><td> 1.9035 </td><td> 28.47 </td></tr> <tr><td> G8' </td><td> S14' </td><td> 91.4 </td><td> 3.4 </td><td> 1.5005 </td><td> 69.73 < /td></tr><tr><td> S15' </td><td> -205 </td><td> 0.7 </td><td> </td><td> </td> </tr><tr><td> G9 </td><td> S16 </td><td> 38.9 </td><td> 6 </td><td> 1.7016 </td><td> 55.8 </td></tr><tr><td> S17 </td><td> -45.9 </td><td> 0.1 </td><td> </td><td> </td ></tr><tr><td> G10 </td><td> S18 </td><td> -92.3 </td><td> 1.8 </td><td> 1.9148 </td><td> 24.55 </td></tr><tr><td> G11 </td><td> S19 </td ><td> 21 </td><td> 6.6 </td><td> 1.5005 </td><td> 69.73 </td></tr><tr><td> S20 </td><td > -148 </td><td> 38.53 </td><td> </td><td> </td></tr></TBODY></TABLE>

4A is an astigmatism and field curvature diagram of an embodiment of the imaging lens of FIG. 3, FIG. 4B is a distortion diagram of an embodiment of the imaging lens of FIG. 3, and FIG. 4C is an embodiment of the imaging lens of FIG. Modulation transfer function diagram. As shown in FIGS. 4A to 4C, the imaging lens 100a of the present embodiment can be adapted to eliminate residual aberrations to provide good imaging quality.

FIG. 5 is a schematic diagram of an imaging lens according to another embodiment of the present invention. Referring to FIG. 5, the imaging lens 100b of the present embodiment is similar to the imaging lens 100 of FIG. 1. The main difference is that the imaging lens 100b further includes a twelfth lens G13 disposed between the third lens G3 and the fourth lens G4. .

In the present embodiment, the twelfth lens G13 has, for example, a positive refracting power. Specifically, the twelfth lens G13 of the present embodiment is a lenticular lens, that is, the surface S23 facing the magnification side of the twelfth lens G13 and the surface S24 facing the reduction side are, for example, convex curved surfaces. Further, in other embodiments, the twelfth lens G13 is not limited to the lenticular lens, and the twelfth lens G13 may be other types of convex lenses, such as plano-convex lenses and meniscus convex lenses. In other embodiments, the twelfth lens G13 may be disposed between the fourth lens G4 and the fifth lens G5, or a lens having a positive refracting power may be added to each of the two sides of the fourth lens G4. Further, as shown in FIG. 5, the third lens G3'' of the present embodiment is, for example, a biconcave lens, that is, the surface S5'' facing the magnification side of the third lens G3'' and the surface S6'' facing the reduction side are, for example, both It is a concave curved surface, but it can also be other kinds of concave lenses. On the other hand, the eighth lens G8' of this embodiment is similar to the design of Fig. 3 and will not be repeated here.

Table 3 will show an embodiment of the parameters of the imaging lens 100b. It should be noted that the data listed in Table 3 is not intended to limit the present invention, and any person having ordinary knowledge in the art can make appropriate changes to its parameters or settings after referring to the present invention, but it should still It is within the scope of the invention.

Table 3         <TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr><td> component </td><td> surface </td><td> radius of curvature (mm) </td><td> spacing (mm) </td><td> refractive index</td><td> Abbe number</td></tr><tr><td> G1 </td>< Td> S1 </td><td> 59.5 </td><td> 9 </td><td> 1.6117 </td><td> 64.74 </td></tr><tr><td> S2 </td><td> 207 </td><td> 0.9 </td><td> </td><td> </td></tr><tr><td> G2 </td>< Td> S3 </td><td> 63.5 </td><td> 1.8 </td><td> 1.9459 </td><td> 17.98 </td></tr><tr><td> S4 </td><td> 22 </td><td> 10.3 </td><td> </td><td> </td></tr><tr><td> G3'' </td ><td> S5'' </td><td> -372 </td><td> 1.8 </td><td> 1.8599 </td><td> 42.28 </td></tr><tr ><td> S6'' </td><td> 35 </td><td> 28.5 </td><td> </td><td> </td></tr><tr><td > G13 </td><td> S23 </td><td> 152 </td><td> 4.6 </td><td> 1.5585 </td><td> 41.97 </td></tr> <tr><td> S24 </td><td> -138 </td><td> 4.2 </td><td> </td><td> </td></tr><tr>< Td> G4 </td><td> S7 </td><td> -438 </td><td> 5.1 </td><td> 1.6391 </td><td> 61.45 </td></ Tr><t r><td> S8 </td><td> -52 </td><td> 0.1 </td><td> </td><td> </td></tr><tr><td > G5 </td><td> S9 </td><td> 44.5 </td><td> 4 </td><td> 1.9394 </td><td> 19.02 </td></tr> <tr><td> S10 </td><td> 83 </td><td> 23.1 </td><td> </td><td> </td></tr><tr><td > SA </td><td> SA </td><td> infinity</td><td> 4.9 </td><td> </td><td> </td></tr>< Tr><td> G6 </td><td> S11 </td><td> -40.6 </td><td> 1.8 </td><td> 1.9134 </td><td> 24.96 </td ></tr><tr><td> S12 </td><td> 25.9 </td><td> 7.6 </td><td> </td><td> </td></tr> <tr><td> G7 </td><td> S13 </td><td> -35.8 </td><td> 0.1 </td><td> 1.4955 </td><td> 69.87 </ Td></tr><tr><td> G8' </td><td> S14' </td><td> 93.2 </td><td> 3.7 </td><td> 1.9459 </td ><td> 17.98 </td></tr><tr><td> S15' </td><td> -120.4 </td><td> 0.1 </td><td> </td>< Td> </td></tr><tr><td> G9 </td><td> S16 </td><td> 37.2 </td><td> 5.9 </td><td> 1.7227 < /td><td> 54.31 </td></tr><tr><td> S17 </td><td> -51.1 </td><td> 0.1 </td><td> </td> <td> </td></tr><tr><td> G10 </td><td> S18 </td ><td> -121 </td><td> 1.8 </td><td> 1.9094 </td><td> 26.24 </td></tr><tr><td> G11 </td>< Td> S19 </td><td> 19.3 </td><td> 5.6 </td><td> 1.5026 </td><td> 69.65 </td></tr><tr><td> S20 </td><td> 3160 </td><td> 38.53 </td><td> </td><td> </td></tr></TBODY></TABLE>

6A is an astigmatism and field curvature diagram of an embodiment of the imaging lens of FIG. 5, FIG. 6B is a distortion diagram of an embodiment of the imaging lens of FIG. 5, and FIG. 6C is an embodiment of the imaging lens of FIG. Modulation transfer function diagram. As shown in FIGS. 6A to 6C, the imaging lens 100b of the present embodiment can be adapted to provide good image quality.

FIG. 7 is a schematic diagram of an imaging lens according to another embodiment of the present invention. Referring to FIG. 7, the imaging lens 100c of the present embodiment is similar to the imaging lens 100 of FIG. 1. The main difference is that the imaging lens 100c further includes a twelfth lens G14 disposed between the aperture stop SA and the sixth lens G6. .

In the present embodiment, the twelfth lens G14 has, for example, a positive refracting power. Specifically, the twelfth lens G14 of the present embodiment is a meniscus type convex lens, the surface S25 of the twelfth lens G14 facing the magnification side is a concave curved surface, and the surface S26 facing the reduction side is, for example, a convex curved surface, and further, In other embodiments, the twelfth lens G14 is not limited to a meniscus type convex lens, and the twelfth lens G14 may be another type of convex lens, for example, a plano-convex lens, a lenticular lens, or the like. In other embodiments, the twelfth lens G14 may be disposed between the fifth lens G5 and the aperture stop SA, or a lens having a positive refracting power may be added to each of the two sides of the aperture stop SA. Further, as shown in Fig. 7, the third lens G3'' and the eighth lens G8' of the present embodiment are similar to the design of Fig. 5, and will not be repeated here.

Table 4 will show an embodiment of the parameters of the imaging lens 100c. It should be noted that the data listed in Table 4 is not intended to limit the present invention, and any one of ordinary skill in the art can make appropriate changes to its parameters or settings after referring to the present invention, but it should still be It is within the scope of the invention.

Table 4         <TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr><td> component </td><td> surface </td><td> radius of curvature (mm) </td><td> spacing (mm) </td><td> refractive index</td><td> Abbe number</td></tr><tr><td> G1 </td>< Td> S1 </td><td> 60.3 </td><td> 8.6 </td><td> 1.6379 </td><td> 61.58 </td></tr><tr><td> S2 </td><td> 197 </td><td> 0.1 </td><td> </td><td> </td></tr><tr><td> G2 </td>< Td> S3 </td><td> 62.4 </td><td> 1.8 </td><td> 1.9459 </td><td> 17.98 </td></tr><tr><td> S4 </td><td> 22.5 </td><td> 10.5 </td><td> </td><td> </td></tr><tr><td> G3'' </td ><td> S5'' </td><td> -493 </td><td> 1.8 </td><td> 1.755 </td><td> 52.33 </td></tr><tr ><td> S6'' </td><td> 32.2 </td><td> 34.7 </td><td> </td><td> </td></tr><tr><td > G4 </td><td> S7 </td><td> 143 </td><td> 6.9 </td><td> 1.5944 </td><td> 64.4 </td></tr> <tr><td> S8 </td><td> -49.4 </td><td> 0.1 </td><td> </td><td> </td></tr><tr>< Td> G5 </td><td> S9 </td><td> 46.6 </td><td> 4.1 </td><td> 1.9392 </td><td> 19.07 </td></tr > <tr><td> S10 </td><td> 97 </td><td> 23.2 </td><td> </td><td> </td></tr><tr><td > SA </td><td> SA </td><td> infinity</td><td> 2.7 </td><td> </td><td> </td></tr>< Tr><td> G14 </td><td> S25 </td><td> -384 </td><td> 2.2 </td><td> 1.7741 </td><td> 49.92 </td ></tr><tr><td> S26 </td><td> -200 </td><td> 1.6 </td><td> </td><td> </td></tr ><tr><td> G6 </td><td> S11 </td><td> -39.1 </td><td> 1.8 </td><td> 1.9117 </td><td> 25.51 < /td></tr><tr><td> G7 </td><td> S12 </td><td> 25.5 </td><td> 7.6 </td><td> 1.5029 </td> <td> 69.64 </td></tr><tr><td> S13 </td><td> -35.9 </td><td> 0.1 </td><td> </td><td> </td></tr><tr><td> G8' </td><td> S14' </td><td> 90.4 </td><td> 3.6 </td><td> 1.9459 < /td><td> 17.98 </td></tr><tr><td> S15' </td><td> -150.7 </td><td> 0.1 </td><td> </td ><td> </td></tr><tr><td> G9 </td><td> S16 </td><td> 38.5 </td><td> 5.9 </td><td> 1.7389 </td><td> 53.28 </td></tr><tr><td> S17 </td><td> -50 </td><td> 0.1 </td><td> </ Td><td> </td></tr><tr><td> G10 </td><td> S1 8 </td><td> -110.1 </td><td> 1.8 </td><td> 1.9072 </td><td> 27.06 </td></tr><tr><td> G11 < /td><td> S19 </td><td> 19.7 </td><td> 5.6 </td><td> 1.4978 </td><td> 69.8 </td></tr><tr> <td> S20 </td><td> -1337 </td><td> 38.53 </td><td> </td><td> </td></tr></TBODY></TABLE >

8A is an astigmatism and field curvature diagram of an embodiment of the imaging lens of FIG. 7, FIG. 8B is a distortion diagram of an embodiment of the imaging lens of FIG. 7, and FIG. 8C is an embodiment of the imaging lens of FIG. Modulation transfer function diagram. As shown in FIGS. 8A to 8C, the imaging lens 100c of the present embodiment is adapted to eliminate aberrations caused by excessive incident angle of the light beam to provide good imaging quality.

9 is a schematic view of an imaging lens according to another embodiment of the present invention. Referring to FIG. 9 , the imaging lens 100 d of the present embodiment is similar to the imaging lens 100 of FIG. 1 . The main difference is that the imaging lens 100 d further includes a twelfth lens G15 disposed between the third lens G3 and the fourth lens G4. .

In the present embodiment, the twelfth lens G15 has, for example, a negative refracting power. Specifically, the twelfth lens G15 of the present embodiment is a meniscus concave lens, the surface S27 of the twelfth lens G15 facing the magnification side is a convex curved surface, and the surface S28 facing the reduction side is, for example, a concave curved surface, and further, In other embodiments, the twelfth lens G15 is not limited to a meniscus concave lens, and the twelfth lens G15 may be other types of concave lenses, such as a plano-concave lens and a biconcave lens. Further, as shown in Fig. 9, the third lens G3' and the eighth lens G8' of the present embodiment are similar to those of Fig. 3, and will not be repeated here.

Table 5 will cite an embodiment of the parameters of the imaging lens 100d. It should be noted that the data listed in Table 5 is not intended to limit the present invention, and any person having ordinary knowledge in the art can make appropriate changes to its parameters or settings after referring to the present invention, but it should still be It is within the scope of the invention.

Table 5         <TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr><td> component </td><td> surface </td><td> radius of curvature (mm) </td><td> spacing (mm) </td><td> refractive index</td><td> Abbe number</td></tr><tr><td> G1 </td>< Td> S1 </td><td> 52.12 </td><td> 9.6 </td><td> 1.6133 </td><td> 64.5 </td></tr><tr><td> S2 </td><td> 142.1 </td><td> 0.1 </td><td> </td><td> </td></tr><tr><td> G2 </td>< Td> S3 </td><td> 52.58 </td><td> 1.8 </td><td> 1.9229 </td><td> 20.88 </td></tr><tr><td> S4 </td><td> 22.11 </td><td> 9.7 </td><td> </td><td> </td></tr><tr><td> G3' </td> <td> S5' </td><td> 240.3 </td><td> 1.8 </td><td> 1.883 </td><td> 40.8 </td></tr><tr><td > S6' </td><td> 33.04 </td><td> 3.3 </td><td> </td><td> </td></tr><tr><td> G15 </ Td><td> S27 </td><td> 95.24 </td><td> 1.8 </td><td> 1.5935 </td><td> 67.33 </td></tr><tr>< Td> S28 </td><td> 44.63 </td><td> 29.1 </td><td> </td><td> </td></tr><tr><td> G4 </ Td><td> S7 </td><td> 160.3 </td><td> 7 </td><td> 1.5833 </td><td> 60.2 </td></tr>< Tr><td> S8 </td><td> -44.24 </td><td> 0.1 </td><td> </td><td> </td></tr><tr><td > G5 </td><td> S9 </td><td> 42.4 </td><td> 4.3 </td><td> 1.9229 </td><td> 20.88 </td></tr> <tr><td> S10 </td><td> 80.8 </td><td> 21.33 </td><td> </td><td> </td></tr><tr><td > SA </td><td> SA </td><td> infinity</td><td> 6.7 </td><td> </td><td> </td></tr>< Tr><td> G6 </td><td> S11 </td><td> -40.3 </td><td> 1.8 </td><td> 1.9037 </td><td> 31.32 </td ></tr><tr><td> G7 </td><td> S12 </td><td> 25.24 </td><td> 7.8 </td><td> 1.506 </td><td > 69.54 </td></tr><tr><td> S13 </td><td> -32.92 </td><td> 0.1 </td><td> </td><td> </ Td></tr><tr><td> G8' </td><td> S14' </td><td> 64.64 </td><td> 3.9 </td><td> 1.9229 </td ><td> 20.88 </td></tr><tr><td> S15' </td><td> -170.7 </td><td> 0.1 </td><td> </td>< Td> </td></tr><tr><td> G9 </td><td> S16 </td><td> 42.62 </td><td> 5.9 </td><td> 1.6008 < /td><td> 66.24 </td></tr><tr><td> S17 </td><td> -43.34 </td><td> 0.1 </td><td> </td> <td> </td></tr><tr><td> G10 </td> <td> S18 </td><td> -82.7 </td><td> 1.8 </td><td> 1.9043 </td><td> 28.15 </td></tr><tr><td > G11 </td><td> S19 </td><td> 21.33 </td><td> 6.45 </td><td> 1.5445 </td><td> 68.34 </td></tr> <tr><td> S20 </td><td> -180.5 </td><td> 38.53 </td><td> </td><td> </td></tr></TBODY> </TABLE>

10A is an astigmatism and field curvature diagram of an embodiment of the imaging lens of FIG. 9, FIG. 10B is a distortion diagram of an embodiment of the imaging lens of FIG. 9, and FIG. 10C is an embodiment of the imaging lens of FIG. Modulation transfer function diagram. As shown in FIGS. 10A to 10C, the imaging lens 100d of the present embodiment is adapted to eliminate aberrations caused by excessive incident angle of the light beam to provide good imaging quality.

Figure 11 is a schematic illustration of an imaging lens in accordance with another embodiment of the present invention. Referring to FIG. 11 , the imaging lens 100 e of the present embodiment is similar to the imaging lens 100 of FIG. 1 . The main difference is that the imaging lens 100 e further includes a twelfth lens G16 disposed between the fourth lens G4 and the fifth lens G5 . .

Specifically, the twelfth lens G16 of the present embodiment has, for example, a positive refracting power. Specifically, the twelfth lens G16 of the present embodiment is a lenticular lens, that is, the surface S29 facing the magnification side of the twelfth lens G16 and the surface S30 facing the reduction side are, for example, convex curved surfaces, and further, in other embodiments, The twelfth lens G16 is not limited to the lenticular lens, and the twelfth lens G16 may be other types of convex lenses, for example, a meniscus type convex lens and a plano-convex lens. Further, as shown in Fig. 11, the third lens G3'' of the present embodiment is similar to the design of Fig. 5 and will not be repeated here. On the other hand, the eighth lens G8'' of the present embodiment is, for example, a meniscus type convex lens, that is, the surface S14'' of the eighth lens G8'' facing the enlarged side is, for example, a convex curved surface, and the surface S15' facing the reduction side. 'For example, it is a concave curved surface, but it may be other kinds of convex lenses.

Table 6 will show an embodiment of the parameters of the imaging lens 100e. It should be noted that the data listed in Table 6 is not intended to limit the present invention, and anyone having ordinary knowledge in the art can make appropriate changes to its parameters or settings after referring to the present invention, but it should still It is within the scope of the invention.

Table 6         <TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr><td> component </td><td> surface </td><td> radius of curvature (mm) </td><td> spacing (mm) </td><td> refractive index</td><td> Abbe number</td></tr><tr><td> G1 </td>< Td> S1 </td><td> 65.3 </td><td> 7.7 </td><td> 1.7323 </td><td> 53.69 </td></tr><tr><td> S2 </td><td> 181.5 </td><td> 0.1 </td><td> </td><td> </td></tr><tr><td> G2 </td>< Td> S3 </td><td> 60.34 </td><td> 2.3 </td><td> 1.9459 </td><td> 18.2 </td></tr><tr><td> S4 </td><td> 23.18 </td><td> 10.65 </td><td> </td><td> </td></tr><tr><td> G3'' </td ><td> S5'' </td><td> -388.56 </td><td> 1.8 </td><td> 1.883 </td><td> 40.8 </td></tr><tr ><td> S6'' </td><td> 35.05 </td><td> 30.2 </td><td> </td><td> </td></tr><tr><td > G4 </td><td> S7 </td><td> 124.33 </td><td> 8.1 </td><td> 1.5179 </td><td> 51.88 </td></tr> <tr><td> S8 </td><td> -47.54 </td><td> 0.1 </td><td> </td><td> </td></tr><tr>< Td> G16 </td><td> S29 </td><td> 2820 </td><td> 3 </td><td> 1.5252 </td><td> 49.0 6 </td></tr><tr><td> S30 </td><td> -180.1 </td><td> 0.1 </td><td> </td><td> </td ></tr><tr><td> G5 </td><td> S9 </td><td> 40.8 </td><td> 3.8 </td><td> 1.9349 </td><td > 19.81 </td></tr><tr><td> S10 </td><td> 63.36 </td><td> 24.7 </td><td> </td><td> </td ></tr><tr><td> SA </td><td> SA </td><td> infinity</td><td> 5.42 </td><td> </td><td > </td></tr><tr><td> G6 </td><td> S11 </td><td> -41.2 </td><td> 1.8 </td><td> 1.9035 < /td><td> 28.47 </td></tr><tr><td> G7 </td><td> S12 </td><td> 26.4 </td><td> 8.1 </td> <td> 1.5448 </td><td> 68.45 </td></tr><tr><td> S13 </td><td> -32.45 </td><td> 0.1 </td><td > </td><td> </td></tr><tr><td> G8'' </td><td> S14'' </td><td> 54.45 </td><td> 3.5 </td><td> 1.9459 </td><td> 18.2 </td></tr><tr><td> S15'' </td><td> 401.3 </td><td> 0.1 </td><td> </td><td> </td></tr><tr><td> G9 </td><td> S16 </td><td> 37.46 </td>< Td> 5.8 </td><td> 1.755 </td><td> 52.3 </td></tr><tr><td> S17 </td><td> -55.33 </td><td> 0.1 </td><td> </td><td> </td></t r><tr><td> G10 </td><td> S18 </td><td> -108.1 </td><td> 1.8 </td><td> 1.9046 </td><td> 28.05 </td></tr><tr><td> G11 </td><td> S19 </td><td> 19.02 </td><td> 5.83 </td><td> 1.4874 </td ><td> 70.1 </td></tr><tr><td> S20 </td><td> -782 </td><td> 38.53 </td><td> </td><td > </td></tr></TBODY></TABLE>

12A is an astigmatism and field curvature diagram of an embodiment of the imaging lens of FIG. 11, FIG. 12B is a distortion diagram of an embodiment of the imaging lens of FIG. 11, and FIG. 12C is an embodiment of the imaging lens of FIG. Modulation transfer function diagram. As shown in FIGS. 12A to 12C, the imaging lens 100e of the present embodiment is adapted to eliminate aberration caused by an excessive incident angle of a light beam to provide good imaging quality.

Figure 13 is a schematic illustration of an imaging lens in accordance with another embodiment of the present invention. Referring to FIG. 13, the imaging lens 100f of the present embodiment is similar to the imaging lens 100 of FIG. 1. The main difference is that the imaging lens 100f further includes a twelfth lens G17 disposed between the fifth lens G5 and the aperture stop SA. .

In the present embodiment, the twelfth lens G17 has, for example, a positive refracting power. Specifically, the twelfth lens G17 of the present embodiment is a meniscus type convex lens, the surface S31 of the twelfth lens G17 facing the magnification side is a convex curved surface, and the surface S32 facing the reduction side is, for example, a concave curved surface, and further, In other embodiments, the twelfth lens G17 is not limited to a meniscus type convex lens, and the twelfth lens G17 may be another type of convex lens, for example, a plano-convex lens and a lenticular lens. Further, as shown in Fig. 13, the third lens G3'' and the eighth lens G8' of the present embodiment are similar to the design of Fig. 5, and will not be repeated here.

Table 7 will show an embodiment of the parameters of the imaging lens 100f. It should be noted that the data listed in Table 7 is not intended to limit the present invention, and any person having ordinary knowledge in the art can make appropriate changes to its parameters or settings after referring to the present invention, but it should still be It is within the scope of the invention.

Table 7         <TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr><td> component </td><td> surface </td><td> radius of curvature (mm) </td><td> spacing (mm) </td><td> refractive index</td><td> Abbe number</td></tr><tr><td> G1 </td>< Td> S1 </td><td> 113.3 </td><td> 7 </td><td> 1.4874 </td><td> 70.1 </td></tr><tr><td> S2 </td><td> Plane</td><td> 0.1 </td><td> </td><td> </td></tr><tr><td> G2 </td>< Td> S3 </td><td> 54.88 </td><td> 1.9 </td><td> 1.9459 </td><td> 17.98 </td></tr><tr><td> S4 </td><td> 24.6 </td><td> 10.8 </td><td> </td><td> </td></tr><tr><td> G3'' </td ><td> S5'' </td><td> -120.1 </td><td> 1.8 </td><td> 1.883 </td><td> 40.8 </td></tr><tr ><td> S6'' </td><td> 37.01 </td><td> 24.9 </td><td> </td><td> </td></tr><tr><td > G4 </td><td> S7 </td><td> 139.4 </td><td> 9 </td><td> 1.5892 </td><td> 67.4 </td></tr> <tr><td> S8 </td><td> -47.89 </td><td> 1.95 </td><td> </td><td> </td></tr><tr>< Td> G5 </td><td> S9 </td><td> 61.33 </td><td> 3.7 </td><td> 1.92286 </td><td> 20.8 </t d></tr><tr><td> S10 </td><td> 130.94 </td><td> 20.6 </td><td> </td><td> </td></tr ><tr><td> G17 </td><td> S31 </td><td> 52.53 </td><td> 2.9 </td><td> 1.9459 </td><td> 17.98 </ Td></tr><tr><td> S32 </td><td> 88.8 </td><td> 10 </td><td> </td><td> </td></tr ><tr><td> SA </td><td> SA </td><td> infinity</td><td> 3.7 </td><td> </td><td> </td ></tr><tr><td> G6 </td><td> S11 </td><td> -39.24 </td><td> 1.8 </td><td> 1.911 </td>< Td> 25.7 </td></tr><tr><td> G7 </td><td> S12 </td><td> 28.78 </td><td> 7.7 </td><td> 1.4955 </td><td> 69.87 </td></tr><tr><td> S13 </td><td> -34.93 </td><td> 0.1 </td><td> </td ><td> </td></tr><tr><td> G8' </td><td> S14' </td><td> 110.3 </td><td> 3.9 </td>< Td> 1.9459 </td><td> 17.98 </td></tr><tr><td> S15' </td><td> -93.34 </td><td> 0.1 </td><td > </td><td> </td></tr><tr><td> G9 </td><td> S16 </td><td> 35.24 </td><td> 6 </td ><td> 1.755 </td><td> 52.3 </td></tr><tr><td> S17 </td><td> -59.99 </td><td> 0.1 </td>< Td> </td><td> </td></tr><tr><td> G10 </td><td> S18 </td><td> -181.3 </td><td> 1.8 </td><td> 1.9094 </td><td> 26.24 </td></tr>< Tr><td> G11 </td><td> S19 </td><td> 18.78 </td><td> 5.18 </td><td> 1.4874 </td><td> 70.1 </td> </tr><tr><td> S20 </td><td> 171.343 </td><td> 38.54 </td><td> </td><td> </td></tr>< /TBODY></TABLE>

14A is an astigmatism and field curvature diagram of an embodiment of the imaging lens of FIG. 13, FIG. 14B is a distortion diagram of an embodiment of the imaging lens of FIG. 13, and FIG. 14C is an embodiment of the imaging lens of FIG. Modulation transfer function diagram. As shown in FIGS. 14A to 14C, the imaging lens 100f of the present embodiment is adapted to eliminate aberrations caused by excessive incident angle of the light beam to provide good imaging quality.

In addition to the configuration of other lenses listed in the above embodiments, in other embodiments, the twelfth lens may also be disposed between the second lens G2 and the third lens G3 to slow the diffusion of the light beam through the second lens G2. In effect, this imaging lens can have good imaging quality. In addition, in other embodiments, the imaging lens may also add a lens with positive refracting power on each side of the second lens G2.

The imaging lens of the embodiment of the present invention includes eleven lenses, and since the lenses arranged on the magnification side to the reduction side all have diopter, and have positive, negative, negative, positive, positive, negative, positive, positive, respectively according to the ordering. Positive, negative, positive diopter, so this imaging lens can provide good imaging quality. In addition, the imaging lens of the embodiment of the present invention also contributes to providing good image quality because it can include one or more other lenses.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope is subject to the definition of the scope of the patent application attached.

100, 100a, 100b, 100c, 100d, 100e, 100f‧‧‧ imaging lenses
150‧‧‧ optical axis
C1‧‧‧First composite lens
C2‧‧‧Second composite lens
G1, G1'‧‧‧ first lens
G2‧‧‧ second lens
G3, G3', G3''‧‧‧ third lens
G4‧‧‧4th lens
G5‧‧‧ fifth lens
G6‧‧‧ sixth lens
G7‧‧‧ seventh lens
G8, G8', G8''‧‧‧ eighth lens
G9‧‧‧ ninth lens
G10‧‧‧11th lens
G11‧‧ eleventh lens
G12, G13, G14, G15, G16, G17‧‧ twelfth lens
P‧‧‧ components
SA‧‧‧ aperture diaphragm
S1, S1', S2, S2', S3, S4, S5, S5', S5'', S6, S6', S6'', S7, S8, S9, S10, S11, S13, S14, S14', S14 '', S15, S15', S15'', S16, S17, S18, S20, S21, S22, S23, S24, S25, S26, S27, S28, S29, S30, S31, S32‧‧
S12, S19‧‧‧ joint surface

1 is a schematic view of an imaging lens according to an embodiment of the present invention. 2A is an astigmatism and field curvature diagram of an embodiment of the imaging lens of FIG. 1. 2B is a distortion diagram of an embodiment of the imaging lens of FIG. 1. 2C is a modulation transfer function (MTF) diagram of an embodiment of the imaging lens of FIG. 1. 3 is a schematic view of an imaging lens according to another embodiment of the present invention. 4A is an astigmatism and field curvature diagram of an embodiment of the imaging lens of FIG. 3. 4B is a distortion diagram of an embodiment of the imaging lens of FIG. 3. 4C is a modulation transfer function diagram of an embodiment of the imaging lens of FIG. 3. FIG. 5 is a schematic diagram of an imaging lens according to another embodiment of the present invention. FIG. 6A is an astigmatism and field curvature diagram of an embodiment of the imaging lens of FIG. 5. FIG. FIG. 6B is a distortion diagram of an embodiment of the imaging lens of FIG. 5. FIG. 6C is a modulation transfer function diagram of an embodiment of the imaging lens of FIG. 5. FIG. 7 is a schematic diagram of an imaging lens according to another embodiment of the present invention. FIG. 8A is an astigmatism and field curvature diagram of an embodiment of the imaging lens of FIG. 7. FIG. FIG. 8B is a distortion diagram of an embodiment of the imaging lens of FIG. 7. FIG. Figure 8C is a modulation transfer function diagram of an embodiment of the imaging lens of Figure 7. 9 is a schematic view of an imaging lens according to another embodiment of the present invention. FIG. 10A is an astigmatism and field curvature diagram of an embodiment of the imaging lens of FIG. 9. FIG. FIG. 10B is a distortion diagram of an embodiment of the imaging lens of FIG. 9. FIG. Figure 10C is a modulation transfer function diagram of an embodiment of the imaging lens of Figure 9. Figure 11 is a schematic illustration of an imaging lens in accordance with another embodiment of the present invention. Figure 12A is an astigmatism and field curvature diagram of an embodiment of the imaging lens of Figure 11 . Figure 12B is a distortion diagram of an embodiment of the imaging lens of Figure 11 . Figure 12C is a modulation transfer function diagram of an embodiment of the imaging lens of Figure 11 . Figure 13 is a schematic illustration of an imaging lens in accordance with another embodiment of the present invention. 14A is an astigmatism and field curvature diagram of an embodiment of the imaging lens of FIG. 14B is a distortion diagram of an embodiment of the imaging lens of FIG. 14C is a modulation transfer function diagram of an embodiment of the imaging lens of FIG.

100‧‧‧ imaging lens

150‧‧‧ optical axis

C1‧‧‧First composite lens

C2‧‧‧Second composite lens

G1‧‧‧ first lens

G2‧‧‧ second lens

G3‧‧‧ third lens

G4‧‧‧4th lens

G5‧‧‧ fifth lens

G6‧‧‧ sixth lens

G7‧‧‧ seventh lens

G8‧‧‧ eighth lens

G9‧‧‧ ninth lens

G10‧‧‧11th lens

G11‧‧ eleventh lens

P‧‧‧ components

SA‧‧‧ aperture diaphragm

S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S13, S14, S15, S16, S17, S18, S20‧‧‧ surface

S12, S19‧‧‧ joint surface

Claims (10)

An imaging lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh sequentially arranged from an enlarged side to a reduced side. a lens, an eighth lens, a ninth lens, a tenth lens, and an eleventh lens, wherein the first lens, the fourth lens, the fifth lens, the seventh lens, the eighth lens, the The ninth lens and the eleventh lens respectively have positive refracting power, and the second lens, the third lens, the sixth lens, and the tenth lens respectively have negative refracting power. The imaging lens of claim 1, wherein: the first lens has a convex surface facing the magnification side, and the first lens is a meniscus convex lens or a plano-convex lens; the second lens has a concave surface facing the Reducing the side, and the second lens is a meniscus concave lens; the third lens has a concave surface facing the reduced side, and the third lens is a plano-concave lens, a biconcave lens or a meniscus concave lens; the fourth lens is a lenticular lens Or a meniscus convex lens; the fifth lens is a meniscus convex lens; the sixth lens and the seventh lens comprise a first composite lens, and a joint surface of the sixth lens and the seventh lens is a curved surface; The eighth lens is a plano-convex lens, a lenticular lens or a meniscus convex lens; the ninth lens is a lenticular lens; the tenth lens and the eleventh lens form a second composite lens, and the tenth lens and the eleventh lens The joint surface is a curved surface. The imaging lens of claim 2, wherein the sixth lens has a concave surface facing the magnification side, and the seventh lens has a convex surface facing the reduction side. The imaging lens of claim 2, wherein the tenth lens has a concave surface facing the magnification side, and the eleventh lens has a convex surface facing the reduction side. The imaging lens of claim 1, further comprising an aperture stop disposed between the fifth lens and the sixth lens. The imaging lens of claim 5, further comprising a twelfth lens disposed at one of the following positions: between the first lens and the second lens, the second lens and the third lens Between the third lens and the fourth lens, between the fourth lens and the fifth lens, between the fifth lens and the aperture stop, between the aperture stop and the sixth lens . The imaging lens of claim 6, wherein the twelfth lens is disposed between the first lens and the second lens, between the third lens and the fourth lens, or the aperture stop Between the sixth lenses, the twelfth lens has a positive refracting power. The imaging lens of claim 6, wherein the twelfth lens is disposed between the first lens and the second lens, and the material of the twelfth lens comprises a bismuth glass. The imaging lens of claim 1, wherein: the material of the first lens comprises flint glass or neodymium glass; the material of the second lens comprises heavy flint glass; the material of the third lens comprises heavy flint glass; The material of the fourth lens comprises a light plexiglass; the material of the fifth lens comprises heavy flint glass; the material of one of the sixth lens and the seventh lens comprises heavy flint glass, the sixth lens and the seventh The material of the lens includes: the material of the eighth lens and the ninth lens comprises a heavy flint glass, and the material of the eighth lens and the ninth lens comprises a neodymium glass; The material of one of the ten lens and the eleventh lens comprises heavy flint glass, and the material of the tenth lens and the eleventh lens includes light glass. The imaging lens of claim 1, wherein the imaging lens has a full field of view between 50 degrees and 180 degrees.