High-resolution zoom optical imaging system

Abstract

The utility model relates to a high-resolution zoom optical imaging system, which comprises a fixed lens unit group Fix1, a zoom lens unit group Zoom, a diaphragm group ST0, a fixed lens unit group Fix2, a compensation lens unit group Focus and an imaging unit group Image which are sequentially arranged from an object side to an image side along the direction of an optical axis. The utility model has the advantages of simple structure, reasonable design, multi-focal-length coverage, high flexibility and strong adaptability. Compared with a traditional fixed-focus lens, the fixed-focus lens can change the focal length within a certain range, is suitable for different shooting scenes and mold protection objects, can be flexibly adjusted in shooting, does not need to frequently replace the lens, and can solve the problem regardless of the size of a mold. And secondly, the optical imaging system also has high-resolution imaging and low distortion, and can realize high-definition imaging and low distortion at different focal lengths.

Description

Technical Field

[0001] The utility model relates to a high-resolution zoom optical imaging system. Background Art

[0002] In recent years, with the development of computer technology and intelligent manufacturing, the mold protection industry has gradually transformed towards intelligent machine vision technology, using machine vision's high precision that exceeds that of the human eye to monitor and manage the operating status of the mold in real time, thereby improving production stability, increasing production yield, reducing production costs, ensuring production safety, and thus enhancing product competitiveness.

[0003] With the advancement of machine vision camera sensing technology and the expansion of its application areas, machine vision mold protection systems have put forward higher compatibility requirements for machine vision lenses: whether it is injection molds, stamping molds, die-casting molds and other mold scenarios of different sizes, it is hoped that a single lens can be compatible with all molds and can simultaneously take into account high-definition imaging at different shooting object distances. Therefore, designing a machine vision mold protection lens that can meet these usage requirements will play a very important role in the highly variable mold industry. Utility Model Content

[0004] In order to solve the above problems, the technical problem to be solved by the present invention is to provide a variable focal length optical imaging system with multi-focal length coverage, high flexibility and strong adaptability. Compared with traditional fixed-focus lenses, the focal length can be changed within a certain range to adapt to different shooting scenes and mold protection objects. The shooting can be flexibly adjusted without frequent lens replacement. Regardless of the size of the mold, one lens can solve it; secondly, the optical imaging system also has high-resolution imaging, low distortion, and can achieve high-definition imaging and low distortion at different focal lengths.

[0005] The utility model is constructed as follows: it includes a fixed lens unit group Fix1, a zoom lens unit group Zoom, an aperture group ST0, a fixed lens unit group Fix2, a compensation lens unit group Focus and an imaging unit group Image, which are arranged in sequence from the object side to the image side along the optical axis.

[0006] Furthermore, the fixed lens unit group Fix1 includes a meniscus lens G1, a biconvex lens G2 and a meniscus lens G3 arranged in sequence from left to right, and the meniscus lens G1 and the biconvex lens G2 are bonded into a first bonded group H1; the zoom lens unit group Zoom includes a biconcave lens G4, a biconcave lens G5 and a meniscus lens G6 arranged in sequence from left to right, and the biconcave lens G5 and the meniscus lens G6 are bonded into a second bonded group H2; the fixed lens unit group Fix2 includes a biconvex lens G7, a biconvex lens G8 and a biconcave lens G9 arranged in sequence from left to right, and the biconvex lens G8 and the biconcave lens G9 are bonded into a third bonded group H3; the compensation lens unit group Focus includes a biconvex lens G10, a meniscus lens G11 and a biconvex lens G12 arranged in sequence from left to right, and the biconvex lens G10 and the meniscus lens G11 are bonded into a fourth bonded group H4; the imaging unit group Image includes a flat glass G13 and an imaging surface IMA arranged in sequence from left to right.

[0007] Furthermore, the meniscus lens G1 has a negative focal power, its object side surface is convex, and its image side surface is concave; the biconvex lens G2 has a positive focal power, its object side surface is convex, and its image side surface is convex; the meniscus lens G3 has a positive focal power, its object side surface is convex, and its image side surface is concave; the biconcave lens G4 has a negative focal power, its object side surface is concave, and its image side surface is concave; the biconcave lens G5 has a negative focal power, its object side surface is concave, and its image side surface is concave; the meniscus lens G6 has a positive focal power, its object side surface is convex, and its image side surface is concave ; The optical focal power of the biconvex lens G7 is positive, its object side surface is convex, and its image side surface is convex; the optical focal power of the biconvex lens G8 is positive, its object side surface is convex, and its image side surface is convex; the optical focal power of the biconcave lens G9 is negative, its object side surface is concave, and its image side surface is concave; the optical focal power of the biconvex lens G10 is positive, its object side surface is convex, and its image side surface is convex; the optical focal power of the meniscus lens G11 is negative, its object side surface is concave, and its image side surface is convex; the optical focal power of the biconvex lens G12 is positive, its object side surface is convex, and its image side surface is convex.

[0008] Furthermore, the air gap between the fixed lens unit group Fix1 and the aperture group ST0 is 25.73 mm; the air gap between the aperture group ST0 and the fixed lens unit group Fix2 is 2.71 mm; and the air gap between the fixed lens unit group Fix2 and the imaging unit group Image is 27.48 mm.

[0009] Furthermore, when the optical system changes magnification from the short focal end to the long focal end, the zoom lens unit group Zoom moves along the optical axis from the object side to the image side, and the air gap between the fixed lens unit group Fix1 and the zoom lens unit group Zoom varies between 0.7-18.1mm; when the optical system focuses from the close-up end to the telephoto end, the compensation lens unit group Focus moves along the optical axis from the object side to the image side, and the air gap between the fixed lens unit group Fix2 and the compensation lens unit group Focus varies between 1.9-7.5mm.

[0010] Furthermore, the air gap between the first cemented group H1 and the meniscus lens G3 is 0.1 mm; the air gap between the biconcave lens G4 and the second cemented group H2 is 2.95 mm; the air gap between the biconvex lens G7 and the third cemented group H3 is 0.1 mm; the air gap between the fourth cemented group H4 and the biconvex lens G12 is 0.1 mm; and the air gap between the flat glass G13 and the imaging surface IMA is 0.2 mm.

[0011] Furthermore, the refractive index of the meniscus lens G1 is n1 and the Abbe number is V1, which satisfy the relationship: 1.84<n1<1.88, 23.5<V1<24.0; the refractive index of the biconvex lens G2 is n2 and the Abbe number is V2, which satisfy the relationship: 1.55<n2<1.61, 67.5<V2<71.5; the refractive index of the meniscus lens G3 is n3 and the Abbe number is V3, which satisfy the relationship: 1.67<n3<1.72, 55.0<V3<59.0; the refractive index of the biconcave lens G4 is n4 and the Abbe number is V4, which satisfy the relationship: 1.88<n4<1.94, 33.5<V4<36.5; the refractive index of the biconcave lens G5 is n5 and the Abbe number is V5, which satisfy the relationship: 1.4 8<n5<1.50, 65.0<V5<73.0; the refractive index of the meniscus lens G6 is n6 and the Abbe number is V6, which satisfy the relationship: 1.83<n6<1.87, 23.0<V6<25.0; the refractive index of the biconvex lens G7 is n7 and the Abbe number is V7, which satisfy the relationship: 1.72<n7<1.82, 48.0<V7<55.0; the refractive index of the biconvex lens G8 is n8 and the Abbe number is V8, which satisfy the relationship: 1.49<n8<1.51, 75.0<V8<83.0; the refractive index of the biconcave lens G9 is n9 and the Abbe number is V9, which satisfy the relationship: 1.60<n9<1.62, 52.0<V9<57.0; the refractive index of the biconvex lens G10 is n 10 , Abbe number is V 10 , which satisfies the relationship: 1.72<n 10 <1.74、53.0<V 10 <56.0; the refractive index of the meniscus lens G11 is n11 , Abbe number is V 11 , which satisfies the relationship: 1.84<n 11 <1.86、29.5<V 11 <31.0; the refractive index of the biconvex lens G12 is n 12 , Abbe number is V 12 , which satisfies the relationship: 1.57<n 12 <1.62、63.5<V 12 <71.5.

[0012] Compared with the existing technology, the present invention has the following beneficial effects: the imaging system of the present invention has multi-focal length coverage, high flexibility and strong adaptability. Compared with the traditional fixed-focus lens, the focal length can be changed within a certain range to adapt to different shooting scenes and mold protection objects. The shooting can be flexibly adjusted without frequent lens replacement. Regardless of the size of the mold, one lens can solve the problem. Secondly, the optical imaging system also has high-resolution imaging and low distortion, and can achieve high-definition imaging and low distortion at different focal lengths; fixed lens unit group Fix1, aperture group ST0, fixed lens unit group Fix2, imaging unit group Ima ge is fixed relative to the optical axis. When the optical system changes magnification from the short focal end to the long focal end, the zoom lens unit group Zoom moves along the optical axis from the object side to the image side; when the optical system focuses from the close-up end to the telephoto end, the compensation lens unit group Focus moves along the optical axis from the object side to the image side. This optical system has a compact structure and is composed of twelve spherical lenses combined into eight groups. The optical power of each lens is reasonably distributed through the reasonable selection of lens materials and the control of the convexity and concavity of the spherical surface. The positive and negative lens combinations are used to effectively correct the aberration of the off-axis field of view, thereby improving the imaging quality and meeting the image quality requirements of the optical system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the optical path structure of the imaging system according to an embodiment of the utility model;

[0014] Figure 2 This is the MTF curve diagram of the embodiment of the utility model at 7mm focal length;

[0015] Figure 3 This is the MTF curve diagram of the embodiment of the utility model at a focal length of 16mm;

[0016] Figure 4 This is the MTF curve diagram of the embodiment of the utility model at 25mm focal length;

[0017] Figure 5 This is the MTF curve diagram of the embodiment of the utility model at 36mm focal length;

[0018] Figure 6This is a graph of field curvature and distortion at a focal length of 7mm for an embodiment of the present invention;

[0019] Figure 7 This is a graph of field curvature and distortion at a focal length of 16mm according to an embodiment of the present invention;

[0020] Figure 8 This is a graph of field curvature and distortion at a focal length of 25mm according to an embodiment of the present invention;

[0021] Figure 9 This is a graph showing the field curvature and distortion curves for a 36mm focal length lens according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0023] Example: Refer to the attached Figure 1-9 As shown, in this embodiment, a high-resolution zoom optical imaging system is provided, including a fixed lens unit group Fix1, a variable magnification lens unit group Zoom, an aperture group ST0, a fixed lens unit group Fix2, a compensation lens unit group Focus and an imaging unit group Image, which are arranged in sequence from the object side to the image side along the optical axis.

[0024] The fixed lens unit group Fix1, the aperture group ST0, the fixed lens unit group Fix2, and the imaging unit group Image are fixed relative to the optical axis. When the optical system zooms from the short focal length to the long focal length, the zoom lens unit group Zoom moves along the optical axis from the object side to the image side. When the optical system focuses from the macro end to the telephoto end, the compensation lens unit group Focus moves along the optical axis from the object side to the image side.

[0025] This optical system has a compact structure and is composed of twelve spherical lenses combined into eight groups. The optical power of each lens is reasonably distributed by rationally selecting the materials of each lens and controlling the convexity and concavity of its spherical surface. A combination of positive and negative lenses is used to effectively correct the aberration of the off-axis field of view, thereby improving the imaging quality and meeting the image quality requirements of the optical system.

[0026] The total optical focal length of the fixed lens unit group Fix1 is positive, the total optical focal length of the zoom lens unit group Zoom is negative, the total optical focal length of the fixed lens unit group Fix2 is positive, and the total optical focal length of the compensation lens unit group Focus is positive.

[0027] In order to achieve high resolution in each focal length segment, the design adopts the method of changing the relative position of the compensation lens unit group Focus and the zoom lens unit group Zoom to adjust the change of the focal length of the optical system and realize imaging compensation.

[0028] The optical system is made of glass spherical lenses.

[0029] In an embodiment of the present utility model, the fixed lens unit group Fix1 includes a meniscus lens G1, a biconvex lens G2 and a meniscus lens G3 arranged in sequence from left to right, and the meniscus lens G1 and the biconvex lens G2 are bonded into a first bonded group H1; the zoom lens unit group Zoom includes a biconcave lens G4, a biconcave lens G5 and a meniscus lens G6 arranged in sequence from left to right, and the biconcave lens G5 and the meniscus lens G6 are bonded into a second bonded group H2; the fixed lens unit group Fix2 includes a biconvex lens G7, a biconvex lens G8 and a biconcave lens G9 arranged in sequence from left to right, and the biconvex lens G8 and the biconcave lens G9 are bonded into a third bonded group H3; the compensation lens unit group Focus includes a biconvex lens G10, a meniscus lens G11 and a biconvex lens G12 arranged in sequence from left to right, and the biconvex lens G10 and the meniscus lens G11 are bonded into a fourth bonded group H4; the imaging unit group Image includes a flat glass G13 and an imaging surface IMA arranged in sequence from left to right.

[0030] In the embodiment of the present invention, the focal power of the meniscus lens G1 is negative, its object side surface is convex, and its image side surface is concave; the focal power of the biconvex lens G2 is positive, its object side surface is convex, and its image side surface is convex; the focal power of the meniscus lens G3 is positive, its object side surface is convex, and its image side surface is concave; the focal power of the biconcave lens G4 is negative, its object side surface is concave, and its image side surface is concave; the focal power of the biconcave lens G5 is negative, its object side surface is concave, and its image side surface is concave; the focal power of the meniscus lens G6 is positive, its object side surface is convex, and its image side surface is is concave; the biconvex lens G7 has a positive optical power, its object side surface is convex, and its image side surface is convex; the biconvex lens G8 has a positive optical power, its object side surface is convex, and its image side surface is convex; the biconcave lens G9 has a negative optical power, its object side surface is concave, and its image side surface is concave; the biconvex lens G10 has a positive optical power, its object side surface is convex, and its image side surface is convex; the meniscus lens G11 has a negative optical power, its object side surface is concave, and its image side surface is convex; the biconvex lens G12 has a positive optical power, its object side surface is convex, and its image side surface is convex.

[0031] The optical focal power of the first bonding group H1 is positive, the optical focal power of the second bonding group H2 is positive, the optical focal power of the third bonding group H3 is negative, and the optical focal power of the fourth bonding group H4 is positive.

[0032] In the first cemented group H1: the materials of the meniscus lens G1 and the biconvex lens G2 are heavy flint glass and heavy phosphorus crown glass, respectively. The heavy flint glass G1 and heavy phosphorus crown glass G2 are bonded together in sequence to form a composite material, which ensures the mechanical strength and heat resistance of the first cemented group H1, reduces the reflection loss of the entrance pupil light inside the lens, and effectively improves the imaging quality of the optical system in high and low temperature environments.

[0033] In the second cemented group H2: the materials used for the biconcave lens G5 and the meniscus lens G6 are crown glass and flint glass, respectively. The crown glass G5 with a lower refractive index and the flint glass G6 with high refractive index and low dispersion are bonded together to form a composite lens. This balances the refractive indices of light of different wavelengths, reduces light dispersion, and effectively corrects positional chromatic aberration.

[0034] In the third cemented group H3: the positive optical power biconvex lens G8 and the negative optical power biconcave lens G9, the bonding of the two positive and negative lenses reduces the light energy reflection loss of different wavelengths of light in the optical system, increases the image brightness, and effectively improves the light transmittance.

[0035] In the fourth cemented group H4, the biconvex lens G10 and the meniscus lens G11 are made of lanthanum crown glass and heavy lanthanum flint glass, respectively. The two high-refractive-index positive and negative lenses are bonded together to prevent total internal reflection at the air gap, effectively reducing spherical aberration in the optical system and improving imaging quality.

[0036] In an embodiment of the present invention, the air gap between the fixed lens unit group Fix1 and the aperture group ST0 is 25.73 mm; the air gap between the aperture group ST0 and the fixed lens unit group Fix2 is 2.71 mm; and the air gap between the fixed lens unit group Fix2 and the imaging unit group Image is 27.48 mm.

[0037] In an embodiment of the present invention, when the optical system changes magnification from the short focal end to the long focal end, the zoom lens unit group Zoom moves along the optical axis from the object side to the image side, and the air gap between the fixed lens unit group Fix1 and the zoom lens unit group Zoom changes between 0.7-18.1 mm; when the optical system focuses from the close-up end to the telephoto end, the compensation lens unit group Focus moves along the optical axis from the object side to the image side, and the air gap between the fixed lens unit group Fix2 and the compensation lens unit group Focus changes between 1.9-7.5 mm.

[0038] In the embodiment of the present invention, the air gap between the first cemented group H1 and the meniscus lens G3 is 0.1 mm; the air gap between the biconcave lens G4 and the second cemented group H2 is 2.95 mm; the air gap between the biconvex lens G7 and the third cemented group H3 is 0.1 mm; the air gap between the fourth cemented group H4 and the biconvex lens G12 is 0.1 mm; and the air gap between the flat glass G13 and the imaging surface IMA is 0.2 mm.

[0039] In an embodiment of the present invention, the refractive index of the meniscus lens G1 is n1 and the Abbe number is V1, which satisfy the relationship: 1.84 < n1 < 1.88, 23.5 < V1 < 24.0; the refractive index of the biconvex lens G2 is n2 and the Abbe number is V2, which satisfy the relationship: 1.55 < n2 < 1.61, 67.5 < V2 < 71.5; the refractive index of the meniscus lens G3 is n3 and the Abbe number is V3, which satisfy the relationship: 1.67 < n3 < 1.72, 55.0 < V3 < 59.0; the refractive index of the biconcave lens G4 is n4 and the Abbe number is V4, which satisfy the relationship: 1.88 < n4 < 1.94, 33.5 < V4 < 36.5; the refractive index of the biconcave lens G5 is n5 and the Abbe number is V5, which satisfy the relationship: 1.48<n5<1.50, 65.0<V5<73.0; the refractive index of the meniscus lens G6 is n6 and the Abbe number is V6, which satisfy the relationship: 1.83<n6<1.87, 23.0<V6<25.0; the refractive index of the biconvex lens G7 is n7 and the Abbe number is V7, which satisfy the relationship: 1.72<n7<1.82, 48.0<V7<55.0; the refractive index of the biconvex lens G8 is n8 and the Abbe number is V8, which satisfy the relationship: 1.49<n8<1.51, 75.0<V8<83.0; the refractive index of the biconcave lens G9 is n9 and the Abbe number is V9, which satisfy the relationship: 1.60<n9<1.62, 52.0<V9<57.0; the refractive index of the biconvex lens G10 is n 10 , Abbe number is V 10 , which satisfies the relationship: 1.72<n 10 <1.74、53.0<V 10 <56.0; the refractive index of the meniscus lens G11 is n 11 , Abbe number is V 11 , which satisfies the relationship: 1.84<n 11 <1.86、29.5<V 11 <31.0; the refractive index of the biconvex lens G12 is n 12 , Abbe number is V 12 , which satisfies the relationship: 1.57<n 12 <1.62、63.5<V 12 <71.5.

[0040] In the embodiment of the present invention, the curvature radius of the S12 surface of the biconvex lens G7 is designed to be equal to the curvature radius of the S13 surface, which can effectively save time and cost in developing molds.

[0041] In this embodiment, the imaging system of the present invention achieves the following technical indicators: image plane size ≤φ8.8mm, EFFL=7mm~36mm, image space F / #=2.8, total optical length ∑<75mm, operating wavelength: FdC (visible).

[0042] In this embodiment, the parameters of each lens are shown in Table 1 below:

[0043]

[0044] Table 1

[0045] In this embodiment, the MTF curve of the optical system is as follows: Figure 2 As shown in the figure, when the focal length is 7mm, the edge field MTF is ≥0.25@180Lp / mm, and the center field MTF is ≥0.4@180Lp / mm; Figure 3 The figure shows that when the focal length is 16mm, the edge field MTF is ≥0.25@180Lp / mm, and the center field MTF is ≥0.4@180Lp / mm; Figure 4 The figure shows that when the focal length is 25mm, the edge field MTF is ≥0.3@180Lp / mm, and the center field MTF is ≥0.4@180Lp / mm; Figure 5 As shown in the figure, at a focal length of 36mm, the MTF of the edge field of view is ≥0.3@180Lp / mm, and the MTF of the center field of view is ≥0.4@180Lp / mm; thus, the zoom optical imaging system can achieve high-quality imaging from the short focal length to the long focal length.

[0046] Field curvature and distortion curves of optical systems: Figure 6 The figure shows that when the focal length is 7mm, the field curvature is ≤±0.05mm and the optical distortion is ≤-3.3%; Figure 7 The figure shows that when the focal length is 12mm, the field curvature is ≤±0.05mm and the optical distortion is ≤-1.2%. Figure 8 The figure shows that when the focal length is 16mm, the field curvature is ≤±0.05mm and the optical distortion is ≤-1%. Figure 9 As shown in the figure, at a focal length of 25mm, the field curvature is ≤±0.05mm and the optical distortion is ≤-0.9%, thereby achieving low distortion in the zoom optical imaging system from the short focal length to the long focal length.

[0047] Unless otherwise stated, any numerical range disclosed for any technical solution disclosed in the present invention is a preferred numerical range. Those skilled in the art should understand that a preferred numerical range is merely a numerical range that provides a more significant or representative technical effect among a wide range of practicable values. Due to the large number of numerical values, it is impossible to enumerate them exhaustively. Therefore, only some numerical values ​​are disclosed in the present invention to illustrate the technical solution of the present invention. Furthermore, the numerical values ​​listed above should not be construed as limiting the scope of protection of the present invention.

[0048] At the same time, if the above-mentioned utility model discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, using bolts or screws to connect), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by a casting process) (except where it is obviously impossible to use an integrated forming process).

[0049] If words such as "first" and "second" are used in this document to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of description to distinguish between components. Unless otherwise stated, the above words have no special meaning.

[0050] In addition, unless otherwise stated, the terms used in any technical solution disclosed in the above-mentioned utility model to express positional relationships or shapes include states or shapes that are approximate, similar or close thereto.

[0051] Any component provided by the present invention can be assembled from multiple separate components, or can be a separate component manufactured by an integral forming process.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and not to limit it; although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solution of the utility model, they should all be included in the scope of the technical solution for which protection is requested in the utility model.

Claims

1. A high-resolution zoom optical imaging system, characterized in that: It includes a fixed lens unit group Fix1, a zoom lens unit group Zoom, an aperture group ST0, a fixed lens unit group Fix2, a compensation lens unit group Focus and an imaging unit group Image, which are arranged in sequence from the object side to the image side along the optical axis; The fixed lens unit group Fix1 includes a meniscus lens G1, a biconvex lens G2 and a meniscus lens G3 arranged in sequence from left to right, and the meniscus lens G1 and the biconvex lens G2 are glued into a first glued group H1; the zoom lens unit group Zoom includes a biconcave lens G4, a biconcave lens G5 and a meniscus lens G6 arranged in sequence from left to right, and the biconcave lens G5 and the meniscus lens G6 are glued into a second glued group H2; the fixed lens unit group Fix2 includes a biconvex lens G7, a biconvex lens G8 and a biconcave lens G9 arranged in sequence from left to right, and the biconvex lens G8 and the biconcave lens G9 are glued into a third glued group H3; the compensation lens unit group Focus includes a biconvex lens G10, a meniscus lens G11 and a biconvex lens G12 arranged in sequence from left to right, and the biconvex lens G10 and the meniscus lens G11 are glued into a fourth glued group H4; the imaging unit group Image includes a flat glass G13 and an imaging surface IMA arranged in sequence from left to right.

2. The high-resolution zoom optical imaging system according to claim 1, characterized in that: The meniscus lens G1 has a negative focal power, a convex object side surface, and a concave image side surface; the biconvex lens G2 has a positive focal power, a convex object side surface, and a convex image side surface; the meniscus lens G3 has a positive focal power, a convex object side surface, and a concave image side surface; the biconcave lens G4 has a negative focal power, a concave object side surface, and a concave image side surface; the biconcave lens G5 has a negative focal power, a concave object side surface, and a concave image side surface; the meniscus lens G6 has a positive focal power, a convex object side surface, and a concave image side surface; The optical focal power of the biconvex lens G7 is positive, its object side surface is convex, and its image side surface is convex; the optical focal power of the biconvex lens G8 is positive, its object side surface is convex, and its image side surface is convex; the optical focal power of the biconcave lens G9 is negative, its object side surface is concave, and its image side surface is concave; the optical focal power of the biconvex lens G10 is positive, its object side surface is convex, and its image side surface is convex; the optical focal power of the meniscus lens G11 is negative, its object side surface is concave, and its image side surface is convex; the optical focal power of the biconvex lens G12 is positive, its object side surface is convex, and its image side surface is convex.

3. The high-resolution zoom optical imaging system according to claim 1, wherein: The air gap between the fixed lens unit group Fix1 and the aperture group ST0 is 25.73 mm; the air gap between the aperture group ST0 and the fixed lens unit group Fix2 is 2.71 mm; and the air gap between the fixed lens unit group Fix2 and the imaging unit group Image is 27.48 mm.

4. The high-resolution zoom optical imaging system according to claim 1, wherein: When the optical system changes magnification from the short focal end to the long focal end, the zoom lens unit group Zoom moves along the optical axis from the object side to the image side, and the air gap between the fixed lens unit group Fix1 and the zoom lens unit group Zoom varies between 0.7-18.1mm; when the optical system focuses from the close-up end to the telephoto end, the compensation lens unit group Focus moves along the optical axis from the object side to the image side, and the air gap between the fixed lens unit group Fix2 and the compensation lens unit group Focus varies between 1.9-7.5mm.

5. The high-resolution zoom optical imaging system according to claim 2, wherein: The air gap between the first cemented group H1 and the meniscus lens G3 is 0.1 mm; the air gap between the biconcave lens G4 and the second cemented group H2 is 2.95 mm; the air gap between the biconvex lens G7 and the third cemented group H3 is 0.1 mm; the air gap between the fourth cemented group H4 and the biconvex lens G12 is 0.1 mm; and the air gap between the flat glass G13 and the imaging surface IMA is 0.2 mm.

6. The high-resolution zoom optical imaging system according to claim 1, characterized in that: The refractive index of the meniscus lens G1 is n1 and the Abbe number is V1, which satisfy the relationship: 1.84<n1<1.88, 23.5<V1<24.0; the refractive index of the biconvex lens G2 is n2 and the Abbe number is V2, which satisfy the relationship: 1.55<n2<1.61, 67.5<V2<71.5; the refractive index of the meniscus lens G3 is n3 and the Abbe number is V3, which satisfy the relationship: 1.67<n3<1.72, 55.0<V3<59.0; the refractive index of the biconcave lens G4 is n4 and the Abbe number is V4, which satisfy the relationship: 1.88<n4<1.94, 33.5<V4<36.5; the refractive index of the biconcave lens G5 is n5 and the Abbe number is V5, which satisfy the relationship: 1.48< n5<1.50, 65.0<V5<73.0; the refractive index of the meniscus lens G6 is n6 and the Abbe number is V6, which satisfy the relationship: 1.83<n6<1.87, 23.0<V6<25.0; the refractive index of the biconvex lens G7 is n7 and the Abbe number is V7, which satisfy the relationship: 1.72<n7<1.82, 48.0<V7<55.0; the refractive index of the biconvex lens G8 is n8 and the Abbe number is V8, which satisfy the relationship: 1.49<n8<1.51, 75.0<V8<83.0; the refractive index of the biconcave lens G9 is n9 and the Abbe number is V9, which satisfy the relationship: 1.60<n9<1.62, 52.0<V9<57.0; the refractive index of the biconvex lens G10 is n 10 , Abbe number is V 10 , which satisfies the relationship: 1.72<n 10 <1.74、53.0<V 10 <56.0; the refractive index of the meniscus lens G11 is n 11 , Abbe number is V 11 , which satisfies the relationship: 1.84<n 11 <1.86、29.5<V 11 <31.0; the refractive index of the biconvex lens G12 is n 12 , Abbe number is V 12 , which satisfies the relationship: 1.57<n 12 <1.62、63.5<V 12 <71.5.

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