Wide-spectrum optical system and lens

Abstract

The invention discloses a wide-spectrum optical system and a lens, and relates to the technical field of optical imaging. The optical system comprises twelve lenses which are sequentially arranged from the object space to the image space, the fifth lens and the sixth lens form a first balsaming lens, and the seventh lens and the eighth lens form a second balsaming lens; the ninth lens, the tenth lens and the eleventh lens form a third cemented lens. The second lens, the third lens, the sixth lens, the seventh lens, the ninth lens and the eleventh lens are lenses with positive focal power, the twelfth lens is a plane lens, and the others are lenses with negative focal power. According to the wide-spectrum optical system and the lens provided by the invention, through a special optical structure consisting of twelve lenses, dispersion aberration and geometric aberration in a range of 400-1700 nanometers can be corrected at the same time, so that high-precision confocal imaging is realized, and the performance of a spectrum imaging system is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical imaging technology, in particular to a wide-spectrum optical system and lens. BACKGROUND

[0002] With the rapid development of spectral imaging technology, its application in the fields of remote sensing, medical treatment, atmospheric monitoring, etc. gradually expands.

[0003] Traditional spectral imaging systems are usually limited by multiple filters, resulting in uneven spectral coverage and affecting imaging quality. Confocal imaging technology significantly improves imaging efficiency by collecting multi-spectral data at one time, but existing technologies still have deficiencies in aberration correction. Specifically, aberrations in the range of 400-1700 nanometers, such as chromatic aberration and geometric aberration, are difficult to correct accurately, resulting in unstable image quality. Existing systems usually use a limited number of spectral channels with large spectral intervals, affecting the continuity and integrity of the image. Therefore, there is an urgent need for an optical system that can achieve high-precision confocal imaging in a wide spectral range. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a wide-spectrum optical system and lens, which can correct chromatic aberration and geometric aberration in the range of 400-1700 nanometers simultaneously through a special optical structure composed of twelve lenses, while ensuring the integrity of spectral coverage.

[0005] To achieve the above design purpose, in a first aspect, the present application provides a wide-spectrum optical system, comprising a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, an eleventh lens and a twelfth lens arranged in order from the object side to the image side; wherein the fifth lens and the sixth lens form a first cemented lens, the seventh lens and the eighth lens form a second cemented lens; the ninth lens, the tenth lens and the eleventh lens form a third cemented lens;

[0006] The first lens is a negative focal length lens, the first surface is concave, and the second surface is convex;

[0007] The second lens is a positive focal length lens, the first surface is convex, and the second surface is concave;

[0008] The third lens is a positive focal length lens, the first surface is convex, and the second surface is concave;

[0009] The fourth lens is a negative focal length lens, the first surface is concave, and the second surface is concave;

[0010] The fifth lens is a negative focal length lens, the first surface is convex, and the second surface is concave;

[0011] The sixth lens is a positive focal length lens, and the second surface is a convex surface;

[0012] The seventh lens is a positive focal length lens, the first surface is a convex surface, and the second surface is a convex surface;

[0013] The eighth lens is a negative focal length lens, and the second surface is a concave surface;

[0014] The ninth lens is a positive focal length lens, the first surface is a convex surface, and the second surface is a concave surface;

[0015] The tenth lens is a negative focal length lens, and the second surface is a concave surface;

[0016] The eleventh lens is a positive focal length lens, and the second surface is a concave surface;

[0017] The twelfth lens is a plane lens;

[0018] Among them, the first surface is the object side, and the second surface is the image side.

[0019] Further, the optical system has clear imaging in the 0.4-1.7um waveband, meets the full field of view MTF>0.2@160lp / mm, and is characterized by meeting the following parameters:

[0020] Focal length: 23.75-26.244mm; F number: F1.8; Optical total length: 61.744-68.227mm; FOV: 25.548°; Image height: 10.4-11.5485mm.

[0021] In a second aspect, the application provides a wide-spectrum lens comprising the wide-spectrum optical system according to the first aspect.

[0022] The application has the following advantages

[0023] 1. Innovative optical structure design: through the special optical structure composed of twelve lenses, including two double cemented lenses and one three-cemented lens, chromatic aberration and geometric aberration in the range of 400-1700nm can be corrected at the same time, so as to realize high-precision confocal imaging, and the performance of the spectral imaging system is significantly improved.

[0024] 2. Optimized spectral response characteristics: by optimizing the curvature radius and central thickness of the lens, and adjusting the glass material and refractive index of each lens (for example, 1.80

[0025] 3. Multi-spectral confocal imaging technology: By collecting multi-spectral data in the range of 400-1700 nanometers at one time, high-precision confocal imaging is realized. This technology combines innovative optical structure design, which can realize the continuity and integrity of the spectrum in a wide spectral range, significantly improving the imaging quality and resolution.

[0026] 4. Precise optical parameter design: The optical parameters of the lens, such as the radius of curvature, the center thickness, and the air gap, are strictly designed (for example, the center thickness of the first lens is 7.125-7.873 mm, and the air gap between the diaphragm and the fifth lens is 1.995-2.204 mm), which ensures the accuracy of the optical path and the compensation of aberration, thereby realizing high-precision imaging.

[0027] 5. Overall performance improvement: By optimizing the optical structure and optical parameters of the lens, the wide-spectrum lens of the present application can provide clear imaging in the 0.4-1.7 μm waveband, meet the requirement of full-field MTF>0.2@160lp / mm, and significantly improve the image resolution and signal-to-noise ratio, solving the limitations of the prior art in high-precision and wide-spectrum imaging. BRIEF DESCRIPTION OF DRAWINGS

[0028] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0029] Figure 1 The structure diagram of the optical system of the embodiment of the present application is shown in the figure.

[0030] Figure 2 The MTF diagram of the first embodiment of the present application is shown in the figure.

[0031] Figure 3 The point column diagram of the first embodiment of the present application is shown in the figure.

[0032] Figure 4 The field curvature / distortion diagram of the first embodiment of the present application is shown in the figure.

[0033] Figure 5 The illumination diagram of the first embodiment of the present application is shown in the figure.

[0034] Figure 6 The MTF diagram of the second embodiment of the present application is shown in the figure.

[0035] Figure 7 The point column diagram of the second embodiment of the present application is shown in the figure.

[0036] Figure 8 The field curvature / distortion diagram of the second embodiment of the present application is shown in the figure.

[0037] Figure 9 The illumination diagram of the second embodiment of the present application is shown in the figure.

[0038] Figure 10MTF plot for embodiment three of the present invention;

[0039] Figure 11 Point spread function plot for embodiment three of the present invention;

[0040] Figure 12 Curvature of field / distortion plot for embodiment three of the present invention;

[0041] Figure 13 Illuminance plot for embodiment three of the present invention. DETAILED DESCRIPTION

[0042] The embodiment of the present application provides a wide-spectrum optical system and a lens, a special optical structure composed of twelve lenses is designed, which can correct chromatic aberration and geometric aberration in the range of 400-1700 nanometers at the same time, while ensuring the integrity of spectral coverage.

[0043] The technical scheme in the embodiment of the present application has the following general idea:

[0044] In order to realize an optical system capable of high-precision confocal imaging in a wide spectral range, a wide-spectrum optical system is designed, which comprises first lens 1, second lens 2, third lens 3, fourth lens 4, diaphragm STO, fifth lens 5, sixth lens 6, seventh lens 7, eighth lens 8, ninth lens 9, tenth lens 10, eleventh lens 11 and twelfth lens 12 arranged in order from the object side to the image side; wherein the fifth lens 5 and the sixth lens 6 form a first cemented lens (double cemented lens), the seventh lens 7 and the eighth lens 8 form a second cemented lens (double cemented lens); the ninth lens 9, the tenth lens 10 and the eleventh lens 11 form a third cemented lens (triple cemented lens);

[0045] The first lens 1 is a negative focal power lens, the first surface is concave, and the second surface is convex;

[0046] The second lens 2 is a positive focal power lens, the first surface is convex, and the second surface is concave;

[0047] The third lens 3 is a positive focal power lens, the first surface is convex, and the second surface is concave;

[0048] The fourth lens 4 is a negative focal power lens, the first surface is concave, and the second surface is concave;

[0049] The fifth lens 5 is a negative focal power lens, the first surface is convex, and the second surface is concave;

[0050] The sixth lens 6 is a positive focal power lens, and the second surface is convex;

[0051] The seventh lens 7 is a positive focal power lens, the first surface is convex, and the second surface is convex;

[0052] The eighth lens 8 is a negative lens, and the second surface is a concave surface;

[0053] The ninth lens 9 is a positive lens, the first surface is a convex surface, and the second surface is a concave surface;

[0054] The tenth lens 10 is a negative lens, and the second surface is a concave surface;

[0055] The eleventh lens 11 is a positive lens, and the second surface is a concave surface;

[0056] The twelfth lens 12 is a plane lens (simulating a filter and packaging glass);

[0057] The first surface is the object side, and the second surface is the image side.

[0058] The design idea of the optical system of the embodiment of the application is as follows:

[0059] (1) The first lens is a negative lens with a concave surface. This design can effectively optimize the path of the light rays of a large-angle field of view. By configuring the concave surface of the negative lens at the first lens position, the deflection of the light rays after passing through the negative lens can be closer to the center of the optical axis, thereby compressing the light rays for the first time at the front end and effectively reducing the subsequent optical effective aperture size. This optimization not only improves the compactness of the lens structure, but also achieves a more reasonable light path layout in the optical system.

[0060] (2) The stop is arranged between the fourth lens 4 and the fifth lens 5 at the front end, and the structures on the left and right sides are symmetrically arranged. This symmetric structure is arranged in a negative-positive-positive-negative arrangement mode before and after the stop. This design has significant advantages in optical performance, which can well compensate and correct the spherical aberration, distortion, and coma of the front group of lenses, thereby providing an optimized imaging effect for the overall system. At the same time, this structural design also plays a key role in improving the resolution.

[0061] (3) The lens groups after the stop are all combined in a cemented lens group. This design has good effects in correcting the wide-spectrum chromatic aberration. In particular, the last group adopts a three-cemented lens group design, which can significantly converge the secondary spectrum achromatism of the wide spectrum.

[0062] The light path characteristics of the embodiment of the present application mainly reflect in the following two aspects: firstly, the front group of symmetric light path plays an important role in the optimization and correction of the overall size and resolution of the lens; secondly, the multi-gluing structure of the rear group is particularly prominent in the overall chromatic aberration convergence effect of the lens. This design can effectively improve the light path performance of the lens as a whole and ensure the imaging quality. Therefore, the embodiment of the present application adopts an innovative optical structure design, which can correct the dispersion and geometric aberration in the multi-spectral range at the same time, thereby realizing the consistency of the imaging quality. In addition, the lens design optimizes the spectral response characteristics, ensures to cover the required overall spectral range, reduces the interval between spectrums, and improves the resolution and signal-to-noise ratio of the image. This design significantly improves the performance of the spectral imaging system and solves the limitations of the prior art in high-precision and wide-spectrum imaging.

[0063] Preferably, the radius of curvature of the first surface of the first lens 1 is -23.395 to -21.172 mm, and the radius of curvature of the second surface is -66.553 to -60.229 mm;

[0064] The radius of curvature of the first surface of the second lens 2 is 22.883 to 25.286 mm, and the radius of curvature of the second surface is 192.829 to 213.076 mm;

[0065] The radius of curvature of the first surface of the third lens 3 is 27.341 to 30.212 mm, and the radius of curvature of the second surface is 107.951 to 119.286 mm;

[0066] The radius of curvature of the first surface of the fourth lens 4 is -810.256 to -733.264 mm, and the radius of curvature of the second surface is 17.319 to 19.138 mm;

[0067] The radius of curvature of the first surface of the fifth lens 5 is 87.670 to 96.875 mm, and the radius of curvature of the second surface is 15.790 to 17.448 mm;

[0068] The radius of curvature of the second surface of the sixth lens 6 is -36.276 to -32.829 mm;

[0069] The radius of curvature of the first surface of the seventh lens 7 is 18.120 to 20.022 mm, and the radius of curvature of the second surface is -22.566 to -20.421 mm;

[0070] The radius of curvature of the second surface of the eighth lens 8 is 80.777 to 89.259 mm;

[0071] The radius of curvature of the first surface of the ninth lens 9 is 13.661 to 15.095 mm, and the radius of curvature of the second surface is 23.645 to 26.128 mm.

[0072] The radius of curvature of the second surface of the tenth lens 10 is 7.036-7.775 mm;

[0073] The radius of curvature of the second surface of the eleventh lens 11 is 10.459-11.557 mm.

[0074] Preferably, the center thickness of the first lens 1 is 7.125-7.873 mm;

[0075] The center thickness of the second lens 2 is 3.648-4.031 mm;

[0076] The center thickness of the third lens 3 is 5.385-5.950 mm;

[0077] The center thickness of the fourth lens 4 is 0.950-1.050 mm;

[0078] The center thickness of the fifth lens 5 is 0.950-1.050 mm;

[0079] The center thickness of the sixth lens 6 is 4.616-5.100 mm;

[0080] The center thickness of the seventh lens 7 is 5.113-5.650 mm;

[0081] The center thickness of the eighth lens 8 is 0.950-1.050 mm;

[0082] The center thickness of the ninth lens 9 is 3.066-3.388 mm;

[0083] The center thickness of the tenth lens 10 is 0.950-1.050 mm;

[0084] The center thickness of the eleventh lens 11 is 4.744-5.242 mm;

[0085] The center thickness of the twelfth lens 12 is 1.425-1.575 mm.

[0086] Preferably, the air gap between the first lens 1 and the second lens 2 is 0.913-1.009 mm;

[0087] The air gap between the second lens 2 and the third lens 3 is 0.095-0.105 mm;

[0088] The air gap between the third lens 3 and the fourth lens 4 is 0.415-0.459 mm;

[0089] The air gap between the fourth lens 4 and the stop STO is 4.478-4.948 mm

[0090] The air gap between the diaphragm STO and the fifth lens 5 is 1.995-2.204 mm;

[0091] The air gap between the sixth lens 6 and the seventh lens 7 is 0.095-0.105 mm;

[0092] The air gap between the eighth lens 8 and the ninth lens 9 is 3.790-4.188 mm.

[0093] The semi-diameter of the first surface of the first lens 1 is 8.523-9.418 mm, and the semi-diameter of the second surface is 9.188-10.152 mm;

[0094] The semi-diameter of the first surface of the second lens 2 is 9.264-10.237 mm, and the semi-diameter of the second surface is 9.023-9.971 mm;

[0095] The semi-diameter of the first surface of the third lens 3 is 8.801-9.725 mm, and the semi-diameter of the second surface is 7.761-8.576 mm;

[0096] The semi-diameter of the first surface of the fourth lens 4 is 7.721-8.531 mm, and the semi-diameter of the second surface is 7.123-7.871 mm;

[0097] The semi-diameter of the first surface of the fifth lens 5 is 7.398-8.175 mm, and the semi-diameter of the second surface is 7.378-8.152 mm;

[0098] The semi-diameter of the second surface of the sixth lens 6 is 7.588-8.385 mm (the fifth lens 5 and the sixth lens 6 form a first cemented lens, the first surface of the sixth lens 6 is in close contact with the second surface of the fifth lens 5, and the similar cemented surface is not repeated below);

[0099] The semi-diameter of the first surface of the seventh lens 7 is 7.708-8.518 mm, and the semi-diameter of the second surface is 7.662-8.467 mm;

[0100] The semi-diameter of the second surface of the eighth lens 8 is 7.528-8.318 mm;

[0101] The semi-diameter of the first surface of the ninth lens 9 is 7.380-8.155 mm, and the semi-diameter of the second surface is 6.802-7.516 mm;

[0102] The semi-diameter of the second surface of the tenth lens 10 is 5.860-6.475 mm;

[0103] The semi-diameter of the second surface of the eleventh lens 11 is 5.316-5.874 mm;

[0104] The semi-diameter of the first surface of the twelfth lens 12 is 5.274-5.827 mm, and the semi-diameter of the second surface is 5.266-5.819 mm.

[0105] The refractive index n and Abbe number Vd of the glass material used by each lens are as follows:

[0106] The first lens 1: 1.80 < n < 2.10 25 < Vd < 45;

[0107] The second lens 2: 1.45 < n < 1.65 60 < Vd < 75;

[0108] The third lens 3: 1.80 < n < 2.10 10 < Vd < 30;

[0109] The fourth lens 4: 1.55 < n < 1.70 50 < Vd < 65;

[0110] The fifth lens 5: 1.80 < n < 2.10 10 < Vd < 30;

[0111] The sixth lens 6: 1.45 < n < 1.65 60 < Vd < 75;

[0112] The seventh lens 7: 1.45 < n < 1.65 60 < Vd < 75;

[0113] The eighth lens 8: 1.45 < n < 1.65 60 < Vd < 75;

[0114] The ninth lens 9: 1.80 < n < 2.10 10 < Vd < 30;

[0115] The tenth lens 10: 1.55 < n < 1.70 25 < Vd < 45;

[0116] The eleventh lens 11: 1.40 < n < 1.55 80 < Vd < 95;

[0117] The twelfth lens 12: 1.45 < n < 1.65 55 < Vd < 70.

[0118] The above optical system can meet clear imaging in the 0.4-1.7 um waveband, meet full field of view MTF > 0.2@160 lp / mm and is characterized by meeting the following parameters:

[0119] Focal length: 23.75-26.244 mm; F number: F1.8; optical total length: 61.744-68.227 mm; FOV: 25.548°; image height: 10.4-11.5485 mm.

[0120] The following is an embodiment of a wide-spectrum optical system with three different focal lengths.

[0121] Embodiment One

[0122] The embodiment provides a wide-spectrum optical system that has clear imaging in the 0.4-1.7um band, meets the full-field MTF>0.2@160lp / mm, and is characterized by meeting the following parameters:

[0123] Focal length: 25mm; F number: F1.8; total optical length: 65mm; FOV: 25.548°; image height: 11mm.

[0124] As shown in Figure 1 , the optical structural parameters of the optical system of the embodiment are as shown in Table 1:

[0125] Table 1

[0126]

[0127]

[0128] The MTF diagram of the embodiment of the application is shown in Figure 2 , the spot diagram is shown in Figure 3 , the field curvature / distortion diagram is shown in Figure 4 , and the illumination diagram is shown in Figure 5 ; it can be seen that the full-field MTF>0.2@160lp / mm, the full-field distortion<|2.92%|, and the full-field relative illumination>77%.

[0129] Embodiment Two

[0130] The embodiment provides a wide-spectrum optical system that has clear imaging in the 0.4-1.7um band, meets the full-field MTF>0.2@160lp / mm, and is characterized by meeting the following parameters:

[0131] Focal length: 23.75mm; F number: F1.8; total optical length: 61.744mm; FOV: 25.548°; image height: 10.45mm.

[0132] As shown in Figure 1 , the optical structural parameters of the optical system of the embodiment are as shown in Table 2:

[0133] Table 2

[0134]

[0135]

[0136] The MTF diagram of the embodiment of the application is shown inFigure 6 As shown in the point spread diagram as shown in Figure 7 As shown in the field curvature / distortion diagram as shown in Figure 8 As shown in the illumination diagram as shown in Figure 9 As shown in the point spread diagram as shown in

[0137] Embodiment Three

[0138] The embodiment provides a wide-spectrum optical system, which has clear imaging in a 0.4-1.7um waveband, satisfies full-field MTF>0.2@160lp / mm and is characterized by satisfying the following parameters:

[0139] Focal length: 26.24mm; F number: F1.8; optical total length: 68.227mm; FOV: 25.548°; image height: 11.548mm.

[0140] As shown in the point spread diagram as shown in Figure 1 The optical structural parameters of the optical system of the embodiment are as shown in Table 3:

[0141] Table 3

[0142] Surface Radius of curvature (mm) Thickness / air gap (mm) Half diameter (mm) R1 -23.395 7.873 9.418 R2 -66.553 1.009 10.152 R3 25.286 4.031 10.237 R4 213.076 0.105 9.971 R5 30.212 5.950 9.725 R6 119.286 0.459 8.576 R7 -810.256 1.050 8.531 R8 19.138 4.948 7.871 STO Inf 2.204 8.023 R10 96.875 1.050 8.175 R11 17.448 5.100 8.152 R12 -36.276 0.105 8.385 R13 20.022 5.650 8.518 R14 -22.566 1.050 8.467 R15 89.259 4.188 8.318 R16 15.095 3.388 8.155 R17 26.128 1.050 7.516 R18 7.775 5.242 6.475 R19 11.557 7.096 5.874 R20 Inf 1.575 5.827 R21 Inf 5.105 5.819 R22 Inf - 5.776

[0143] The MTF diagram of the embodiment three of the application is as shown in Figure 10 As shown in the point spread diagram as shown in Figure 11 As shown in the field curvature / distortion diagram as shown in Figure 12 As shown in the illumination diagram as shown in Figure 13 As shown in the point spread diagram as shown in

[0144] 0.2@160lp / mm, full-field distortion<|2.92%|, and full-field relative illumination>77%.

[0145] The embodiment of the application further provides a wide-spectrum lens, which comprises the wide-spectrum optical system as described in the embodiment one to the embodiment three.

[0146] The application has the following advantages

[0147] 1. Innovative optical structure design: through the special optical structure composed of twelve lenses, including two double cemented lenses and one three cemented lens, chromatic aberration and geometric aberration in a 400-1700nm range can be corrected at the same time, so that high-precision confocal imaging is realized, and the performance of the spectral imaging system is significantly improved.

[0148] 2. Optimized spectral response characteristics: By optimizing the curvature radius and central thickness of each lens, as well as adjusting the glass material and refractive index (e.g. 1.80 < n < 2.10 or 1.45 < n < 1.65), the spectral response characteristics are optimized to ensure complete coverage of the spectral range from 400-1700 nm while reducing the spectral interval, thereby improving the resolution and signal-to-noise ratio of the image.

[0149] 3. Multi-spectral confocal imaging technology: By capturing multi-spectral data in the range of 400-1700 nm at one time, high-precision confocal imaging is achieved. This technology combines innovative optical structure design to achieve spectral continuity and integrity in a wide spectral range, significantly improving imaging quality and resolution.

[0150] 4. Precise optical parameter design: The curvature radius, central thickness, air gap, and other optical parameters of the lens are strictly designed (e.g. the central thickness of the first lens is 7.125-7.873 mm, the air gap between the stop and the fifth lens is 1.995-2.204 mm, etc.), ensuring the accuracy of the optical path and the compensation of aberrations, thereby achieving high-precision imaging.

[0151] 5. Overall performance improvement: By comprehensively optimizing the optical structure and optical parameters of the lens, the wide-spectrum lens of the present application can provide clear imaging in the 0.4-1.7 μm waveband, meeting the requirement of full-field MTF > 0.2 @ 160 lp / mm, while significantly improving the resolution and signal-to-noise ratio of the image, solving the limitations of existing technologies in high-precision and wide-spectrum imaging.

[0152] Although the specific embodiments of the present application have been described above, those skilled in the art should understand that the specific examples described are illustrative only and are not intended to limit the scope of the present application, and equivalent modifications and variations made in accordance with the spirit of the present application by those skilled in the art should be covered within the scope of the claims of the present application.

Claims

1. A wide-spectrum optical system characterized by: The wide-spectrum optical system comprises, sequentially from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, an eleventh lens, and a twelfth lens; wherein the fifth lens and the sixth lens form a first cemented lens, the seventh lens and the eighth lens form a second cemented lens, and the ninth lens, the tenth lens, and the eleventh lens form a third cemented lens. The first lens is a negative focal length lens, the first surface is a concave surface, and the second surface is a convex surface. The second lens is a positive focal length lens, the first surface is a convex surface, and the second surface is a concave surface. The third lens is a positive focal length lens, the first surface is a convex surface, and the second surface is a concave surface. The fourth lens is a negative focal length lens, the first surface is a concave surface, and the second surface is a concave surface. The fifth lens is a negative focal length lens, the first surface is a convex surface, and the second surface is a concave surface. The sixth lens is a positive focal length lens, and the second surface is a convex surface. The seventh lens is a positive focal length lens, the first surface is a convex surface, and the second surface is a convex surface. The eighth lens is a negative focal length lens, and the second surface is a concave surface. The ninth lens is a positive focal length lens, the first surface is a convex surface, and the second surface is a concave surface. The tenth lens is a negative focal length lens, and the second surface is a concave surface. The eleventh lens is a positive focal length lens, and the second surface is a concave surface. The twelfth lens is a plane lens. The first surface is the object side surface, and the second surface is the image side surface.

2. The wide-spectrum optical system according to claim 1, wherein: the first surface of the first lens has a radius of curvature of -23.395 to -21.172 mm, and the second surface has a radius of curvature of -66.553 to -60.229 mm; the first surface of the second lens has a radius of curvature of 22.883 to 25.286 mm, and the second surface has a radius of curvature of 192.829 to 213.076 mm; the first surface of the third lens has a radius of curvature of 27.341 to 30.212 mm, and the second surface has a radius of curvature of 107.951 to 119.286 mm; the first surface of the fourth lens has a radius of curvature of -810.256 to -733.264 mm, and the second surface has a radius of curvature of 17.319 to 19.138 mm; the first surface of the fifth lens has a radius of curvature of 87.670 to 96.875 mm, and the second surface has a radius of curvature of 15.790 to 17.448 mm; the second surface of the sixth lens has a radius of curvature of -36.276 to -32.829 mm; the first surface of the seventh lens has a radius of curvature of 18.120 to 20.022 mm, and the second surface has a radius of curvature of -22.566 to -20.421 mm; the second surface of the eighth lens has a radius of curvature of 80.777 to 89.259 mm; the first surface of the ninth lens has a radius of curvature of 13.661 to 15.095 mm, and the second surface has a radius of curvature of 23.645 to 26.128 mm; and the second surface of the tenth lens has a radius of curvature of 7.036 to 7.775 mm. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The radius of curvature of the second surface of the eleventh lens is 10.459-11.557 mm.

3. The wide spectrum optical system of claim 1, wherein: The center thickness of the first lens is 7.125-7.873 mm; The center thickness of the second lens is 3.648-4.031 mm; The center thickness of the third lens is 5.385-5.950 mm; The center thickness of the fourth lens is 0.950-1.050 mm; The center thickness of the fifth lens is 0.950-1.050 mm; The center thickness of the sixth lens is 4.616-5.100 mm; The center thickness of the seventh lens is 5.113-5.650 mm; The center thickness of the eighth lens is 0.950-1.050 mm; The center thickness of the ninth lens is 3.066-3.388 mm; The center thickness of the tenth lens is 0.950-1.050 mm; The center thickness of the eleventh lens is 4.744-5.242 mm; The center thickness of the twelfth lens is 1.425-1.575 mm.

4. The wide spectrum optical system of claim 1, wherein: The air gap between the first lens and the second lens is: 0.913-1.009 mm; The air gap between the second lens and the third lens is 0.095-0.105 mm; The air gap between the third lens and the fourth lens is 0.415-0.459 mm; The air gap between the fourth lens and the stop is 4.478-4.948 mm The air gap between the stop and the fifth lens is 1.995-2.204 mm; The air gap between the sixth lens and the seventh lens is 0.095-0.105 mm; The air gap between the eighth lens and the ninth lens is 3.790-4.188 mm.

5. The wide spectrum optical system of claim 1, wherein: The half diameter of the first surface of the first lens is 8.523-9.418 mm, and the half diameter of the second surface is 9.188-10.152 mm; The half diameter of the first surface of the second lens is 9.264-10.237 mm, and the half diameter of the second surface is 9.023-9.971 mm; The half diameter of the first surface of the third lens is 8.801-9.725 mm, and the half diameter of the second surface is 7.761-8.576 mm; The half diameter of the first surface of the fourth lens is 7.721-8.531 mm, and the half diameter of the second surface is 7.123-7.871 mm; The half diameter of the first surface of the fifth lens is 7.398-8.175 mm, and the half diameter of the second surface is 7.378-8.152 mm; The half diameter of the second surface of the sixth lens is 7.588-8.385 mm; The half diameter of the first surface of the seventh lens is 7.708-8.518 mm, and the half diameter of the second surface is 7.662-8.467 mm; The half diameter of the second surface of the eighth lens is 7.528-8.318 mm; The half diameter of the first surface of the ninth lens is 7.380-8.155 mm, and the half diameter of the second surface is 6.802-7.516 mm; The half diameter of the second surface of the tenth lens is 5.860-6.475 mm; The half diameter of the second surface of the eleventh lens is 5.316-5.874 mm; The half diameter of the first surface of the twelfth lens is 5.274-5.827 mm, and the half diameter of the second surface is 5.266-5.819 mm.

6. A wide spectrum optical system according to claim 1, wherein The refractive index n and Abbe number Vd of the glass material used by each lens are as follows: First lens: 1.80 < n < 2.10 25 < Vd < 45; Second lens: 1.45 < n < 1.65 60 < Vd < 75; Third lens: 1.80 < n < 2.10 10 < Vd < 30; Fourth lens: 1.55 < n < 1.70 50 < Vd < 65; Fifth lens: 1.80 < n < 2.10 10 < Vd < 30; Sixth lens: 1.45 < n < 1.65 60 < Vd < 75; Seventh lens: 1.45 < n < 1.65 60 < Vd < 75; Eighth lens: 1.45 < n < 1.65 60 < Vd < 75; Ninth lens: 1.80 < n < 2.10 10 < Vd < 30; Tenth lens: 1.55 < n < 1.70 25 < Vd < 45; Eleventh lens: 1.40 < n < 1.55 80 < Vd < 95; Twelfth lens: 1.45 < n < 1.65 55 < Vd < 70.

7. A wide spectrum optical system according to claim 1, characterized in that: The optical system has clear imaging in the 0.4-1.7um waveband, meets the full field of view MTF > 0.2@160lp / mm, and is characterized by meeting the following parameters: Focal length: 23.75-26.244 mm; F number: F1.8; optical total length: 61.744-68.227 mm; FOV: 25.548°; image height: 10.4-11.5485 mm.

8. A wide spectrum lens characterized by: The wide-spectrum optical system as claimed in any one of claims 1-7. The wide-spectrum optical system as claimed in any one of claims 1-7.

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