Ultra-wide high-definition imaging system

Abstract

The present application relates to a kind of ultra-wide angle high-definition imaging systems, comprising: first lens (L1), second lens (L2), third lens (L3), fourth lens (L4), fifth lens (L5), diaphragm (STO), sixth lens (L6), seventh lens (L7), eighth lens (L8), ninth lens (L9) and tenth lens (L10) are arranged in order along the direction of optical axis from object side to image side, the first lens (L1), the second lens (L2), the ninth lens (L9) have negative focal power, the seventh lens (L7), the eighth lens (L8), the tenth lens (L10) have positive focal power, the focal power of the third lens (L3) and the fourth lens (L4) is opposite, the focal power of the fourth lens (L4) and the fifth lens (L5) is opposite, the focal power of the fifth lens (L5) and the sixth lens (L6) is opposite.

Description

Technical Field

[0001] This invention relates to the field of optical lens technology, and in particular to an ultra-wide-angle high-definition imaging system. Background Technology

[0002] As people's demands for photography continue to increase, various camera products are constantly being improved and innovated. Action cameras have become a popular shooting product in recent years, allowing extreme sports enthusiasts to record their movements at high speeds. People are also placing increasingly higher demands on the performance of action cameras.

[0003] Most action cameras currently on the market do not have high-resolution image quality, and lenses that do meet certain image quality requirements often have small apertures and are bulky and heavy. Furthermore, existing action cameras generally experience image blurring after a period of use. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this invention is to provide an ultra-wide-angle high-definition imaging system, which has the advantages of ultra-wide angle, large aperture, high resolution and small size, and can maintain high resolution performance for a long time.

[0005] To achieve the above-mentioned objectives, the present invention provides an ultra-wide-angle high-definition imaging system, comprising: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, an aperture stop, a sixth lens, a seventh lens, an eighth lens, a ninth lens, and a tenth lens arranged sequentially along the optical axis from the object side to the image side; wherein the first lens, the second lens, and the ninth lens have negative optical power; the seventh lens, the eighth lens, and the tenth lens have positive optical power; the third lens and the fourth lens have opposite optical powers; the fourth lens and the fifth lens have opposite optical powers; and the fifth lens and the sixth lens have opposite optical powers.

[0006] The first and second lenses are convex-concave lenses, the third lens is a convex-convex lens or a concave-concave lens, the fourth lens is a concave-convex lens, a convex-convex lens or a concave-concave lens, the fifth lens is a concave-convex lens, a convex-convex lens or a convex-concave lens, the sixth lens is a concave-convex lens, a concave-concave lens or a convex-concave lens, the image-side surface of the seventh lens is convex, the eighth and tenth lenses are convex-convex lenses, and the ninth lens is a concave-concave lens.

[0007] According to one aspect of the invention, the ultra-wide-angle high-definition imaging system further includes a cemented doublet lens composed of the eighth lens and the ninth lens cemented together.

[0008] According to one aspect of the invention, the focal length f8 of the eighth lens and the focal length f9 of the ninth lens satisfy the condition: -2.0≤f8 / f9≤-1.1.

[0009] According to one aspect of the invention, the refractive index ND8 of the eighth lens and the refractive index ND9 of the ninth lens satisfy the condition: 0.1≤|ND8-ND9|≤0.5.

[0010] According to one aspect of the invention, the Abbe number VD8 of the eighth lens and the Abbe number VD9 of the ninth lens satisfy the condition: 45 ≤ |VD8 - VD9| ≤ 60.

[0011] According to one aspect of the invention, the focal length f1 of the first lens and the focal length f2 of the second lens satisfy the condition: 0.1≤f1 / f2≤1.4.

[0012] According to one aspect of the invention, the focal length f3 of the third lens and the focal length f4 of the fourth lens satisfy the condition: -2.4≤f3 / f4≤-0.8.

[0013] According to one aspect of the invention, the focal length f5 of the fifth lens and the focal length f6 of the sixth lens satisfy the condition: -1.0 ≤ f5 / f6 ≤ -0.04.

[0014] According to one aspect of the invention, the focal length f7 of the seventh lens and the total focal length f of the ultra-wide-angle high-definition imaging system satisfy the condition: 1.7≤f7 / f≤4.8.

[0015] According to one aspect of the invention, the focal length f10 of the tenth lens and the total focal length f of the ultra-wide-angle high-definition imaging system satisfy the condition: 2≤f10 / f≤2.9.

[0016] According to one aspect of the invention, the combined focal length fa of the first lens to the fifth lens and the total focal length f of the ultra-wide-angle high-definition imaging system satisfy the condition: -7≤fa / f≤22.

[0017] According to one aspect of the invention, the combined focal length fb of the sixth to the tenth lenses and the total focal length f of the ultra-wide-angle high-definition imaging system satisfy the condition: 1.6 ≤ fb / f ≤ 2.7.

[0018] According to one aspect of the present invention, the total optical length TTL of the ultra-wide-angle high-definition imaging system and the total focal length f of the ultra-wide-angle high-definition imaging system satisfy the condition: 7.9≤TTL / f≤9.6.

[0019] According to one aspect of the present invention, the back focal length BFL of the ultra-wide-angle high-definition imaging system and the total optical length TTL of the ultra-wide-angle high-definition imaging system satisfy the condition: 0.1≤BFL / TTL≤0.3.

[0020] According to one aspect of the present invention, the total focal length f of the ultra-wide-angle high-definition imaging system and the image height h at the maximum field of view of the ultra-wide-angle high-definition imaging system satisfy the condition: 0.1≤f / h≤0.5.

[0021] According to one aspect of the present invention, the back focal length BFL of the ultra-wide-angle high-definition imaging system and the image height h at the maximum field of view of the ultra-wide-angle high-definition imaging system satisfy the condition: 0.1≤BFL / h≤0.7.

[0022] According to one aspect of the present invention, the maximum field of view (FOV) of the ultra-wide-angle high-definition imaging system, the image height (h) at the maximum field of view of the ultra-wide-angle high-definition imaging system, and the maximum aperture (D) of the object side of the first lens at the maximum field of view satisfy the condition: 1.1≤FOV / h / D≤2.1.

[0023] According to one aspect of the invention, the radius of curvature R11 of the object side of the first lens and the radius of curvature R12 of the image side of the first lens satisfy the condition: 0.4≤(R11-R12) / (R11+R12)≤0.9.

[0024] According to one aspect of the invention, the distance T12 between the first lens and the second lens on the optical axis and the distance T23 between the second lens and the third lens on the optical axis satisfy the condition: 0.4≤T12 / T23≤1.8.

[0025] According to one aspect of the invention, the maximum effective radius D11 of the object side surface of the first lens and the maximum effective radius D21 of the object side surface of the second lens satisfy the condition: 1.4≤D11 / D21≤1.8.

[0026] According to one aspect of the present invention, the center thickness CT5 of the fifth lens on the optical axis, the center thickness CT6 of the sixth lens on the optical axis, and the spacing T56 between the fifth lens and the sixth lens on the optical axis satisfy the condition: 0≤T56 / (CT5+CT6)≤0.6.

[0027] According to one aspect of the invention, the maximum aperture D10 of the tenth lens and the image height h at the maximum field of view of the ultra-wide-angle high-definition imaging system satisfy the condition: 0.2≤D10 / h≤0.6.

[0028] According to the present invention, the imaging system employs 10 lenses. Through the setting of positive and negative optical power, convex and concave shapes, and reasonable parameters, it can achieve ultra-wide-angle high-definition imaging performance with an imaging target area of ​​1 / 1.8”, an aperture of FNO1.8, a field of view (FOV) of 160°, and 35 million pixels, while also possessing the advantage of small size. Simultaneously, the principal ray incident angle (CRA) of this imaging system is less than 18°, making it compatible with various large-target sensors. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0030] Figure 1 This schematic diagram illustrates the optical architecture of the ultra-wide-angle high-definition imaging system according to Embodiment 1 of the present invention.

[0031] Figure 2 This schematic diagram illustrates the optical architecture of the ultra-wide-angle high-definition imaging system according to Embodiment 2 of the present invention.

[0032] Figure 3 This schematic diagram illustrates the optical architecture of the ultra-wide-angle high-definition imaging system according to Embodiment 3 of the present invention.

[0033] Figure 4 The diagram illustrates the optical architecture of the ultra-wide-angle high-definition imaging system according to Embodiment 4 of the present invention. Specific Implementation

[0034] The description of the embodiments in this specification should be taken in conjunction with the accompanying drawings, which should form part of the complete specification. In the drawings, the shape or thickness of the embodiments may be exaggerated and may be indicated in a simplified or convenient manner. Furthermore, parts of the various structures in the drawings will be described separately; it is worth noting that elements not shown in the figures or not described in words are in a form known to those skilled in the art.

[0035] The description of the embodiments herein, including any references to directions and orientations, is for ease of description only and should not be construed as limiting the scope of the invention. The following description of preferred embodiments involves combinations of features, which may exist independently or in combination; the invention is not particularly limited to the preferred embodiments. The scope of the invention is defined by the claims.

[0036] In the embodiments of this specification, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the location of the concaveness is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the subject is called the object-side surface of the lens, and the surface of each lens closest to the imaging side is called the image-side surface of the lens.

[0037] like Figure 1-4 As shown in the figure, an ultra-wide-angle high-definition imaging system disclosed in this invention includes: a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, an aperture stop STO, a sixth lens L6, a seventh lens L7, an eighth lens L8, a ninth lens L9, and a tenth lens L10 arranged sequentially along the optical axis from the object side to the image side. The first lens L1 has negative optical power, the second lens L2 has negative optical power, the third lens L3 and the fourth lens L4 have opposite optical powers, the fourth lens L4 and the fifth lens L5 have opposite optical powers, the fifth lens L5 and the sixth lens L6 have opposite optical powers, the seventh lens L7 has positive optical power, the eighth lens L8 has positive optical power, the ninth lens L9 has negative optical power, and the tenth lens L10 has positive optical power. The first lens L1 and the second lens L2 are both convex-concave lenses; the third lens L3 is either a convex-convex lens or a concave-concave lens; the fourth lens L4 is either a concave-convex lens, a convex-convex lens, or a concave-concave lens; the fifth lens L5 is either a concave-convex lens, a convex-convex lens, or a convex-concave lens; the sixth lens L6 is either a concave-convex lens, a concave-concave lens, or a convex-concave lens; the image-side surface of the seventh lens L7 is convex; the eighth lens L8 and the tenth lens L10 are both convex-convex lenses; and the ninth lens L9 is a concave-concave lens. All of the first to tenth lenses are glass lenses.

[0038] According to embodiments of the present invention, the ultra-wide-angle high-definition imaging system further includes a cemented doublet lens composed of an eighth lens L8 and a ninth lens L9. In some embodiments, the second lens L2, the fifth lens L5, the sixth lens L6, and the tenth lens L10 all have aspherical surfaces. In other embodiments, the second lens L2, the third lens L3, the fifth lens L5, and the tenth lens L10 all have aspherical surfaces.

[0039] In the above embodiments, the first lens L1 is a convex-concave lens, which helps to reduce the angle of large-angle light rays, thereby reducing the incident angle of light rays in the rear lens group (the lens located on the image side of the first lens L1), and is more conducive to the correction of aberrations in the rear lens group. The second lens L2 is also a convex-concave lens, which can further reduce the angle of large-angle light rays, and can also share some of the negative optical power of the first lens L1, which is more conducive to improving relative illumination. The combination of positive and negative lenses, the third lens L3 and the fourth lens L4, helps to compensate for aberrations such as chromatic aberration and field curvature generated by the first lens L1 and the second lens L2, reducing the pressure on the rear lens group (the lens located on the image side of the fourth lens L4) to correct aberrations. Setting the fifth lens L5 or the sixth lens L6 as an aspherical surface helps the entire imaging system to better correct aberrations in the central field of view, and is more conducive to achieving the requirement of a larger FNO. The seventh lens L7 and the eighth lens L8 have positive optical power, and the eighth lens L8 is designed with a biconvex shape, which helps to suppress large-angle light rays near the aperture stop STO, allowing more light to enter the rear lens, i.e., the lens located on the image side of the seventh lens L7 or the eighth lens L8. Cementing the eighth lens L8 with the ninth lens L9 helps correct chromatic aberration and gives the entire imaging system better tolerance sensitivity. The design of the tenth lens L10 helps to reduce the principal ray angle to match the chip's CRA curve requirements.

[0040] In the above embodiments, preferably, the focal length f8 of the eighth lens L8 and the focal length f9 of the ninth lens L9 satisfy the condition: -2.0 ≤ f8 / f9 ≤ -1.1. The refractive index ND8 of the eighth lens L8 and the refractive index ND9 of the ninth lens L9 satisfy the condition: 0.1 ≤ |ND8 - ND9| ≤ 0.5. The Abbe number VD8 of the eighth lens L8 and the Abbe number VD9 of the ninth lens L9 satisfy the condition: 45 ≤ |VD8 - VD9| ≤ 60. By reasonably selecting the materials of the cemented doublet lens composed of L8 and L9, with the refractive indices of the two lenses being large and small respectively, and the dispersion coefficients being high and low respectively, the focal length ratio of the cemented lens can be reasonably controlled, thereby effectively correcting the spherical aberration, coma, and axial chromatic aberration of the imaging system.

[0041] According to an embodiment of the present invention, the focal length f1 of the first lens L1 and the focal length f2 of the second lens L2 satisfy the condition: 0.1 ≤ f1 / f2 ≤ 1.4. By rationally allocating the focal lengths of the first lens L1 and the second lens L2 and their combinations, an ultra-wide-angle field of view can be better achieved while meeting processing requirements.

[0042] According to an embodiment of the present invention, the focal length f3 of the third lens L3 and the focal length f4 of the fourth lens L4 satisfy the condition: -2.4 ≤ f3 / f4 ≤ -0.8. By rationally allocating the focal lengths of the third lens L3 and the fourth lens L4 and their combinations, it is beneficial to reduce the chromatic aberration and field curvature generated by the first two lenses, namely L1 and L2.

[0043] According to an embodiment of the present invention, the focal length f5 of the fifth lens L5 and the focal length f6 of the sixth lens L6 satisfy the condition: -1.0 ≤ f5 / f6 ≤ -0.04. By rationally allocating the focal lengths of the fifth lens L5 and the sixth lens L6, it is also beneficial to correct aberrations in the central field of view of the entire imaging system.

[0044] According to an embodiment of the present invention, the focal length f7 of the seventh lens L7 and the total focal length f of the ultra-wide-angle high-definition imaging system satisfy the condition: 1.7 ≤ f7 / f ≤ 4.8. By limiting the optical power of the seventh lens L7, the optical power allocation of the rear lens group (the lens located on the image side of L7) can be better realized.

[0045] According to an embodiment of the present invention, the focal length f10 of the tenth lens L10 and the total focal length f of the ultra-wide-angle high-definition imaging system satisfy the condition: 2≤f10 / f≤2.9. By reasonably setting the focal length and range of the tenth lens L10, it is beneficial to improve the thermal compensation of the lens and balance the aberrations of the optical lens.

[0046] According to an embodiment of the present invention, the front focal length fa of the ultra-wide-angle high-definition imaging system and the total focal length f of the ultra-wide-angle high-definition imaging system satisfy the condition: -7 ≤ fa / f ≤ 22. The rear focal length fb of the ultra-wide-angle high-definition imaging system and the total focal length f of the ultra-wide-angle high-definition imaging system satisfy the condition: 1.6 ≤ fb / f ≤ 2.7. Wherein, the front focal length fa refers to the combined focal length of the first, second, third, fourth, and fifth lenses; the rear focal length fb refers to the combined focal length of the sixth, seventh, eighth, ninth, and tenth lenses. By controlling the focal length ratios of the front lens group and the entire lens, as well as the focal length ratios of the rear lens group and the entire lens, the imaging system can achieve a small size. Adopting a five-lens front and five-lens rear structure can further reduce distortion and improve system performance.

[0047] According to an embodiment of the present invention, the total optical length (TTL) and the total focal length (f) of the ultra-wide-angle high-definition imaging system satisfy the condition: 7.9 ≤ TTL / f ≤ 9.6. By controlling the ratio of the total lens length (TTL) to the lens focal length (f), the imaging system can be further reduced in size, achieving greater miniaturization.

[0048] According to an embodiment of the present invention, the back focal length BFL (in this embodiment, BFL refers to the distance from the center of the image side surface of the tenth lens L10 to the center of the image plane IMA) of the ultra-wide-angle high-definition imaging system and the total optical length TTL of the ultra-wide-angle high-definition imaging system satisfy the condition: 0.1 ≤ BFL / TTL ≤ 0.3. By designing the ratio of the lens's back focal length to its total length, the lens can be made suitable for most optical products.

[0049] According to an embodiment of the present invention, the total focal length f of the ultra-wide-angle high-definition imaging system and the image height h at the maximum field of view of the ultra-wide-angle high-definition imaging system satisfy the condition: 0.1≤f / h≤0.5, which gives the optical lens the characteristics of a large target surface, and the imaging target surface can reach 1 / 1.8".

[0050] According to an embodiment of the present invention, the back focal length BFL of the ultra-wide-angle high-definition imaging system and the image height h at the maximum field of view of the ultra-wide-angle high-definition imaging system satisfy the condition: 0.1≤BFL / h≤0.7. This not only reduces the length of the lens, which is beneficial for assembly, but also reduces the CRA, making the difference between the lens CRA and the sensor small, allowing light to smoothly transition to the image plane IMA, resulting in high energy utilization.

[0051] According to an embodiment of the present invention, the maximum field of view (FOV) of the ultra-wide-angle high-definition imaging system, the image height (h) at the maximum field of view of the ultra-wide-angle high-definition imaging system, and the maximum aperture (D) of the object side of the first lens L1 at the maximum field of view of the ultra-wide-angle high-definition imaging system satisfy the condition: 1.1 ≤ FOV / h / D ≤ 2.1. By controlling the ratio range between the field of view, image height, and maximum aperture, the viewpoint position can be effectively controlled, ensuring that the aperture meets the design requirements.

[0052] According to an embodiment of the present invention, the radius of curvature R11 of the object-side surface of the first lens L1 and the radius of curvature R12 of the image-side surface of the first lens L1 satisfy the condition: 0.4 ≤ (R11-R12) / (R11+R12) ≤ 0.9. By rationally allocating the radii of curvature of the object-side surface and the image-side surface of the first lens L1, an ultra-wide-angle lens can be better achieved, realizing a large angle and a large image plane. At the same time, controlling the outer diameter of the first lens L1 is beneficial to the lens manufacturing process.

[0053] According to an embodiment of the present invention, the distance T12 between the first lens L1 and the second lens L2 on the optical axis, and the distance T23 between the second lens L2 and the third lens L3 on the optical axis, satisfy the condition: 0.4 ≤ T12 / T23 ≤ 1.8. By controlling the air gap T12 between the first and second lenses and the air gap T23 between the second and third lenses, the system coma can be better corrected and the tolerance sensitivity of the system can be reduced.

[0054] According to an embodiment of the present invention, the maximum effective radius D11 of the object side surface of the first lens L1 and the maximum effective radius D21 of the object side surface of the second lens L2 satisfy the condition: 1.4 ≤ D11 / D21 ≤ 1.8. Designing the maximum effective radii of the object side surfaces of the first and second lenses in this way, while meeting the processing conditions, is beneficial for better correcting astigmatism, field curvature, and other off-axis aberrations of the system.

[0055] According to an embodiment of the present invention, the center thickness CT5 of the fifth lens L5 on the optical axis, the center thickness CT6 of the sixth lens L6 on the optical axis, and the distance T56 between the fifth lens L5 and the sixth lens L6 on the optical axis satisfy the condition: 0≤T56 / (CT5+CT6)≤0.6. By reasonably allocating the center thicknesses of the fifth and sixth lenses and the air gap between them, the temperature drift reduction characteristic can be better achieved, and off-axis aberrations such as coma and astigmatism can be effectively corrected.

[0056] According to an embodiment of the present invention, the maximum aperture D10 of the tenth lens L10 and the image height h at the maximum field of view of the ultra-wide-angle high-definition imaging system satisfy the condition: 0.2≤D10 / h≤0.6. By designing the above parameters of the tenth lens L10 and satisfying this condition, the overall light can transition relatively smoothly to the image plane IMA, reducing CRA, and improving the lens's tolerance and manufacturability.

[0057] In summary, based on the above design scheme, the ultra-wide-angle high-definition imaging system of this invention can achieve an ultra-wide-angle high-definition imaging performance with an imaging target surface of up to 1 / 1.8”, a large aperture of FNO1.8, a field of view of 160°, and 35 million pixels, while also possessing the advantage of small size and the ability to maintain this ultra-high-quality imaging for a long time. Simultaneously, the principal ray incident angle (CRA) of this imaging system is less than 18°, making it compatible with various large-target sensors, thus offering broad application prospects and significantly enhancing the market competitiveness of this lens product. Furthermore, through the combined use of different lens materials, the lens achieves a high-definition image quality of approximately 35 million pixels within a temperature range of -40°C to 85°C.

[0058] The ultra-wide-angle high-definition imaging system of the present invention will be specifically described below with reference to four embodiments, accompanying drawings, and tables. In the following embodiments, the aperture stop STO is referred to as one side, the parallel plate C as two sides, the image plane IMA as one side, and the cemented surface of the cemented doublet lens as one side.

[0059] The parameters for each embodiment that meets the above conditions are shown in Table 1 below:

[0060] Conditional expression Example 1 Example 2 Example 3 Example 4 0.1 ≤ f1 / f2 ≤ 1.4 1.186 0.823 0.779 0.272 -2.4≤f3 / f4≤-0.8 -1.058 -1.110 -1.279 -2.063 -1.0≤f5 / f6≤-0.04 -0.680 -0.247 -0.341 -0.096 1.7 ≤ f7 / f ≤ 4.8 2.762 4.597 3.160 2.039 -2.0≤f8 / f9≤-1.1 -1.442 -1.432 -1.622 -1.688 0.1 ≤ |ND8 - ND9| ≤ 0.5 0.22 0.26 0.31 0.31 45≤|VD8-VD9|≤60 52.1 55.0 56.1 56.1 2.0 ≤ f10 / f ≤ 2.9 2.370 2.509 2.169 2.478 -7≤fa / f≤22 11.116 21.214 -6.508 -1.145 1.6 ≤ fb / f ≤ 2.7 2.469 2.526 2.215 1.851 7.9 ≤ TTL / f ≤ 9.6 9.389 9.182 8.798 8.274 0.1 ≤ BFL / TTL ≤ 0.3 0.136 0.135 0.139 0.164 0.1 ≤ f / h ≤ 0.5 0.290 0.294 0.308 0.333 0.1 ≤ BFL / h ≤ 0.7 0.370 0.365 0.377 0.453 1.1≤FOV / h / D≤2.1 1.452 1.677 1.705 1.821 0.4≤(R11-R12) / (R11+R12)≤0.9 0.629 0.695 0.692 0.649 0.4≤T12 / T23≤1.8 0.704 0.611 0.813 1.524 1.4≤D11 / D21≤1.8 1.623 1.660 1.648 1.641 0≤T56 / (CT5+CT6)≤0.6 0.250 0.274 0.176 0.036 0.2≤D10 / h≤0.6 0.459 0.432 0.471 0.404

[0061] Table 1

[0062] In an embodiment of the present invention, the aspherical lens of the ultra-wide-angle high-definition imaging system satisfies the following formula:

[0063]

[0064] In the above formula, z is the axial distance from the vertex to the surface at a position perpendicular to the optical axis at a height h; c represents the curvature at the vertex of the aspherical surface; k is the conic coefficient; A4, A6, A8, A 10 A 12 A 14 A 16 ...represent aspheric coefficients of the fourth, sixth, eighth, tenth, twelfth, fourteenth, and sixteenth orders, respectively.

[0065] Example 1

[0066] See Figure 1 In this embodiment, the first lens L1 has negative optical power, the second lens L2 has negative optical power, the third lens L3 has positive optical power, the fourth lens L4 has negative optical power, the fifth lens L5 has positive optical power, the sixth lens L6 has negative optical power, the seventh lens L7 has positive optical power, the eighth lens L8 has positive optical power, the ninth lens L9 has negative optical power, and the tenth lens L10 has positive optical power. The aperture stop STO is located between the fifth lens L5 and the sixth lens L6.

[0067] Along the optical axis from the object side to the image side, the first lens L1 is a convex-concave lens, the second lens L2 is a convex-concave lens, the third lens L3 is a convex-convex lens, the fourth lens L4 is a concave-concave lens, the fifth lens L5 is a convex-convex lens, the sixth lens L6 is a concave-concave lens, the seventh lens L7 is a convex-convex lens, the eighth lens L8 is a convex-convex lens, the ninth lens L9 is a concave-concave lens, and the tenth lens L10 is a convex-convex lens.

[0068] The second lens L2, the third lens L3, the fifth lens L5, the sixth lens L6, the seventh lens L7, and the tenth lens L10 are all aspherical lenses.

[0069] This embodiment includes a cemented doublet lens composed of an eighth lens L8 and a ninth lens L9 cemented together.

[0070] The relevant parameters of each lens in the ultra-wide-angle high-definition imaging system of this embodiment include: surface number (Surf), surface type (Type), radius of curvature (Radius), thickness (Thickness), refractive index (Nd) of the material (Nd), and Abbe number (Vd), as shown in Table 2 below.

[0071]

[0072]

[0073] Table 2

[0074] The aspherical coefficients of each aspherical lens in the ultra-wide-angle high-definition imaging system of this embodiment include: the quadratic surface constant K, the fourth-order aspherical coefficient A4, the sixth-order aspherical coefficient A6, the eighth-order aspherical coefficient A8, and the tenth-order aspherical coefficient A1. 10 and the twelfth-order aspherical coefficient A 12 As shown in Table 3 below.

[0075]

[0076]

[0077] Table 3

[0078] Combination Figure 1 As shown in Tables 1 to 3 above, the ultra-wide-angle high-definition imaging system of this embodiment can achieve an ultra-wide-angle high-definition imaging performance with an imaging target surface of up to 1 / 1.8”, a large aperture of FNO1.8, a field of view of 160°, and 35 million pixels, while also having the advantage of small size. It also has the ability to maintain this ultra-high quality imaging for a long time.

[0079] Example 2

[0080] See Figure 2 In this embodiment, the first lens L1 has negative optical power, the second lens L2 has negative optical power, the third lens L3 has positive optical power, the fourth lens L4 has negative optical power, the fifth lens L5 has positive optical power, the sixth lens L6 has negative optical power, the seventh lens L7 has positive optical power, the eighth lens L8 has positive optical power, the ninth lens L9 has negative optical power, and the tenth lens L10 has positive optical power. The aperture stop STO is located between the fifth lens L5 and the sixth lens L6.

[0081] Along the optical axis from the object side to the image side, the first lens L1 is a convex-concave lens, the second lens L2 is a convex-concave lens, the third lens L3 is a convex-convex lens, the fourth lens L4 is a concave-convex lens, the fifth lens L5 is a convex-concave lens, the sixth lens L6 is a concave-concave lens, the seventh lens L7 is a concave-convex lens, the eighth lens L8 is a convex-convex lens, the ninth lens L9 is a concave-concave lens, and the tenth lens L10 is a convex-convex lens.

[0082] The second lens L2, the third lens L3, the fifth lens L5, the seventh lens L7, and the tenth lens L10 are all aspherical lenses.

[0083] This embodiment includes a cemented doublet lens composed of an eighth lens L8 and a ninth lens L9 cemented together.

[0084] The relevant parameters of each lens in the ultra-wide-angle high-definition imaging system of this embodiment include: surface number (Surf), surface type (Type), radius of curvature (Radius), thickness (Thickness), refractive index of the material (Nd), and Abbe number (Vd), as shown in Table 4 below.

[0085]

[0086]

[0087] Table 4

[0088] The aspherical coefficients of each aspherical lens in the ultra-wide-angle high-definition imaging system of this embodiment include: the quadratic surface constant K, the fourth-order aspherical coefficient A4, the sixth-order aspherical coefficient A6, the eighth-order aspherical coefficient A8, and the tenth-order aspherical coefficient A1. 10 and the twelfth-order aspherical coefficient A 12 As shown in Table 5 below.

[0089] Surf K <![CDATA[A4]]> <![CDATA[A6]]> <![CDATA[A8]]> <![CDATA[A 10 ]]> <![CDATA[A 12 ]]> 3 0 1.0249E-02 -1.5350E-03 1.4581E-04 -6.5240E-06 6.3285E-08 4 0.0244 1.1965E-02 -2.1499E-03 -5.3260E-05 6.3377E-05 -6.2786E-06 5 0 3.1093E-04 -5.5025E-04 6.9775E-05 -3.4764E-06 -9.6830E-09 6 0 -5.6302E-04 -1.5697E-03 1.5761E-04 -3.8898E-06 -1.0856E-07 9 -2.3012 1.1662E-02 -7.5460E-04 1.6113E-04 -2.6433E-05 1.9433E-06 10 0 1.8982E-02 3.9282E-04 6.1482E-04 -1.8129E-04 1.7499E-05 14 0 1.1818E-02 -2.5664E-04 3.6123E-05 -1.9781E-05 1.4712E-06 15 0.5562 5.2188E-03 -1.3557E-06 1.4962E-05 -2.5647E-06 3.0289E-07 19 2.6220 4.4274E-03 -3.9797E-04 1.3657E-05 -5.5162E-08 -3.7789E-08 20 -0.0852 1.0046E-02 -1.9992E-04 6.3812E-06 -1.2462E-06 2.7217E-08

[0090] Table 5

[0091] Combination Figure 2 As shown in Tables 1, 4, and 5 above, the ultra-wide-angle high-definition imaging system of this embodiment can achieve an imaging target surface with a large image area of ​​1 / 1.8”, a large aperture of FNO1.8, a field of view of 160°, and 35 million pixels, while also having the advantage of small size. It also has the ability to maintain this ultra-high quality imaging for a long time.

[0092] Example 3

[0093] See Figure 3 In this embodiment, the first lens L1 has negative optical power, the second lens L2 has negative optical power, the third lens L3 has positive optical power, the fourth lens L4 has negative optical power, the fifth lens L5 has positive optical power, the sixth lens L6 has negative optical power, the seventh lens L7 has positive optical power, the eighth lens L8 has positive optical power, the ninth lens L9 has negative optical power, and the tenth lens L10 has positive optical power. The aperture stop STO is located between the fifth lens L5 and the sixth lens L6.

[0094] Along the optical axis from the object side to the image side, the first lens L1 is a convex-concave lens, the second lens L2 is a convex-concave lens, the third lens L3 is a convex-convex lens, the fourth lens L4 is a concave-concave lens, the fifth lens L5 is a convex-convex lens, the sixth lens L6 is a concave-concave lens, the seventh lens L7 is a concave-convex lens, the eighth lens L8 is a convex-convex lens, the ninth lens L9 is a concave-concave lens, and the tenth lens L10 is a convex-convex lens.

[0095] The second lens L2, the third lens L3, the fifth lens L5, the seventh lens L7, and the tenth lens L10 are all aspherical lenses.

[0096] This embodiment includes a cemented doublet lens composed of an eighth lens L8 and a ninth lens L9 cemented together.

[0097] The relevant parameters of each lens in the ultra-wide-angle high-definition imaging system of this embodiment include: surface number (Surf), surface type (Type), radius of curvature (Radius), thickness (Thickness), refractive index of the material (Nd), and Abbe number (Vd), as shown in Table 6 below.

[0098]

[0099]

[0100] Table 6

[0101] The aspherical coefficients of each aspherical lens in the ultra-wide-angle high-definition imaging system of this embodiment include: the quadratic surface constant K, the fourth-order aspherical coefficient A4, the sixth-order aspherical coefficient A6, the eighth-order aspherical coefficient A8, and the tenth-order aspherical coefficient A1. 10 and the twelfth-order aspherical coefficient A 12 As shown in Table 7 below.

[0102]

[0103]

[0104] Table 7

[0105] Combination Figure 3 As shown in Tables 1, 6, and 7 above, the ultra-wide-angle high-definition imaging system of this embodiment can achieve an ultra-wide-angle high-definition imaging performance with an imaging target area of ​​up to 1 / 1.8”, a large aperture of FNO1.8, a field of view of 160°, and 35 million pixels, while also having the advantage of small size. It also has the ability to maintain this ultra-high-quality imaging for a long time.

[0106] Example 4

[0107] See Figure 4 In this embodiment, the first lens L1 has negative optical power, the second lens L2 has negative optical power, the third lens L3 has negative optical power, the fourth lens L4 has positive optical power, the fifth lens L5 has negative optical power, the sixth lens L6 has positive optical power, the seventh lens L7 has positive optical power, the eighth lens L8 has positive optical power, the ninth lens L9 has negative optical power, and the tenth lens L10 has positive optical power. The aperture stop STO is located between the fifth lens L5 and the sixth lens L6.

[0108] Along the optical axis from the object side to the image side, the first lens L1 is a convex-concave lens, the second lens L2 is a convex-concave lens, the third lens L3 is a concave-concave lens, the fourth lens L4 is a convex-convex lens, the fifth lens L5 is a concave-convex lens, the sixth lens L6 is a convex-concave lens, the seventh lens L7 is a convex-convex lens, the eighth lens L8 is a convex-convex lens, the ninth lens L9 is a concave-concave lens, and the tenth lens L10 is a convex-convex lens.

[0109] The second lens L2, the fifth lens L5, the sixth lens L6, and the tenth lens L10 are all aspherical lenses.

[0110] This embodiment includes two cemented doublet lenses, one of which is composed of a third lens L3 and a fourth lens L4 cemented together, and the other is composed of an eighth lens L8 and a ninth lens L9 cemented together.

[0111] The relevant parameters of each lens in the ultra-wide-angle high-definition imaging system of this embodiment include: surface number (Surf), surface type (Type), radius of curvature (Radius), thickness (Thickness), refractive index of the material (Nd), and Abbe number (Vd), as shown in Table 8 below.

[0112]

[0113] Table 8

[0114] The aspherical coefficients of each aspherical lens in the ultra-wide-angle high-definition imaging system of this embodiment include: the quadratic surface constant K, the fourth-order aspherical coefficient A4, the sixth-order aspherical coefficient A6, the eighth-order aspherical coefficient A8, and the tenth-order aspherical coefficient A1. 10 and the twelfth-order aspherical coefficient A 12 As shown in Table 9 below.

[0115] Surf K <![CDATA[A4]]> <![CDATA[A6]]> <![CDATA[A8]]> <![CDATA[A 10 ]]> <![CDATA[A 12 ]]> 3 0 9.9347E-03 -7.8020E-04 7.1689E-05 -4.3355E-06 8.9003E-08 4 -30.00 1.3956E-02 -9.7534E-04 1.3818E-04 -1.3596E-05 3.8655E-07 8 0 3.4970E-03 -5.9493E-05 5.1785E-06 6.5764E-07 -1.5165E-07 9 0 1.3686E-03 7.4244E-05 1.9761E-05 -5.0226E-06 1.2458E-07 11 0 2.0114E-04 7.3869E-05 -1.4312E-05 -2.6329E-07 -1.7409E-07 12 0 6.2436E-04 6.9114E-06 -2.2140E-05 3.0689E-06 -2.6292E-07 18 7.7937 -2.3098E-03 1.5014E-04 -3.0128E-05 2.1922E-06 -2.7520E-08 19 0 1.5481E-03 4.3131E-06 3.1503E-06 -1.0385E-06 6.5054E-08

[0116] Table 9

[0117] Combination Figure 4 As shown in Tables 1, 8, and 9 above, the ultra-wide-angle high-definition imaging system of this embodiment can achieve an ultra-wide-angle high-definition imaging performance with an imaging target area of ​​up to 1 / 1.8”, a large aperture of FNO1.8, a field of view of 160°, and 35 million pixels, while also having the advantage of small size. It also has the ability to maintain this ultra-high-quality imaging for a long time.

[0118] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An ultra-wide-angle high-definition imaging system, characterized in that, include: The optical axis consists of ten lenses arranged sequentially from the object side to the image side: a first lens (L1), a second lens (L2), a third lens (L3), a fourth lens (L4), a fifth lens (L5), an aperture stop (STO), a sixth lens (L6), a seventh lens (L7), an eighth lens (L8), a ninth lens (L9), and a tenth lens (L10), each with optical power. The first lens (L1), the second lens (L2), and the ninth lens (L9) have negative optical power, while the seventh lens (L7), the eighth lens (L8), and the tenth lens (L10) have positive optical power. The third lens (L3) and the fourth lens (L4) have opposite optical powers, the fourth lens (L4) and the fifth lens (L5) have opposite optical powers, and the fifth lens (L5) and the sixth lens (L6) have opposite optical powers. The first lens (L1) and the second lens (L2) are convex-concave lenses; the third lens (L3) is a convex-convex lens or a concave-concave lens; the fourth lens (L4) is a concave-convex lens, a convex-convex lens, or a concave-concave lens; the fifth lens (L5) is a concave-convex lens, a convex-convex lens, or a convex-concave lens; the sixth lens (L6) is a concave-convex lens, a concave-concave lens, or a convex-concave lens; the image-side surface of the seventh lens (L7) is convex; the eighth lens (L8) and the tenth lens (L10) are convex-convex lenses; and the ninth lens (L9) is a concave-concave lens. The total optical length (TTL) and total focal length (f) of the ultra-wide-angle high-definition imaging system satisfy the condition: 7.9 ≤ TTL / f ≤ 9.

6.

2. The ultra-wide-angle high-definition imaging system according to claim 1, characterized in that, The ultra-wide-angle high-definition imaging system also includes a cemented doublet lens composed of the eighth lens (L8) and the ninth lens (L9).

3. The ultra-wide-angle high-definition imaging system according to claim 2, characterized in that, The focal length f8 of the eighth lens (L8) and the focal length f9 of the ninth lens (L9) satisfy the condition: -2.0≤f8 / f9≤-1.

1.

4. The ultra-wide-angle high-definition imaging system according to claim 2, characterized in that, The refractive index ND8 of the eighth lens (L8) and the refractive index ND9 of the ninth lens (L9) satisfy the condition: 0.1≤|ND8-ND9|≤0.

5.

5. The ultra-wide-angle high-definition imaging system according to claim 2, characterized in that, The Abbe number VD8 of the eighth lens (L8) and the Abbe number VD9 of the ninth lens (L9) satisfy the condition: 45≤|VD8-VD9|≤60.

6. The ultra-wide-angle high-definition imaging system according to any one of claims 1 to 5, characterized in that, The focal length f1 of the first lens (L1) and the focal length f2 of the second lens (L2) satisfy the condition: 0.1≤f1 / f2≤1.

4.

7. The ultra-wide-angle high-definition imaging system according to any one of claims 1 to 5, characterized in that, The focal length f3 of the third lens (L3) and the focal length f4 of the fourth lens (L4) satisfy the condition: -2.4≤f3 / f4≤-0.

8.

8. The ultra-wide-angle high-definition imaging system according to any one of claims 1 to 5, characterized in that, The focal length f5 of the fifth lens (L5) and the focal length f6 of the sixth lens (L6) satisfy the condition: -1.0≤f5 / f6≤-0.

04.

9. The ultra-wide-angle high-definition imaging system according to any one of claims 1 to 5, characterized in that, The focal length f7 of the seventh lens (L7) and the total focal length f of the ultra-wide-angle high-definition imaging system satisfy the condition: 1.7≤f7 / f≤4.

8.

10. The ultra-wide-angle high-definition imaging system according to any one of claims 1 to 5, characterized in that, The focal length f10 of the tenth lens (L10) and the total focal length f of the ultra-wide-angle high-definition imaging system satisfy the condition: 2≤f10 / f≤2.

9.

11. The ultra-wide-angle high-definition imaging system according to any one of claims 1 to 5, characterized in that, The combined focal length fa of the first lens (L1) to the fifth lens (L5) and the total focal length f of the ultra-wide-angle high-definition imaging system satisfy the condition: -7≤fa / f≤22.

12. The ultra-wide-angle high-definition imaging system according to any one of claims 1 to 5, characterized in that, The combined focal length fb of the sixth lens (L6) to the tenth lens (L10) and the total focal length f of the ultra-wide-angle high-definition imaging system satisfy the condition: 1.6≤fb / f≤2.

7.

13. The ultra-wide-angle high-definition imaging system according to any one of claims 1 to 5, characterized in that, The back focal length (BFL) and total optical length (TTL) of the ultra-wide-angle high-definition imaging system satisfy the condition: 0.1 ≤ BFL / TTL ≤ 0.

3.

14. The ultra-wide-angle high-definition imaging system according to any one of claims 1 to 5, characterized in that, The total focal length f of the ultra-wide-angle high-definition imaging system and the image height h at the maximum field of view of the ultra-wide-angle high-definition imaging system satisfy the condition: 0.1≤f / h≤0.

5.

15. The ultra-wide-angle high-definition imaging system according to any one of claims 1 to 5, characterized in that, The back focal length BFL of the ultra-wide-angle high-definition imaging system and the image height h at the maximum field of view of the ultra-wide-angle high-definition imaging system satisfy the condition: 0.1≤BFL / h≤0.

7.

16. The ultra-wide-angle high-definition imaging system according to any one of claims 1 to 5, characterized in that, The maximum field of view (FOV) of the ultra-wide-angle high-definition imaging system, the image height (h) at the maximum field of view of the ultra-wide-angle high-definition imaging system, and the maximum aperture (D) of the object side of the first lens (L1) at the maximum field of view satisfy the following condition: 1.1≤FOV / h / D≤2.

1.

17. The ultra-wide-angle high-definition imaging system according to any one of claims 1 to 5, characterized in that, The radius of curvature R11 of the object side of the first lens (L1) and the radius of curvature R12 of the image side of the first lens (L1) satisfy the condition: 0.4≤(R11-R12) / (R11+R12)≤0.

9.

18. The ultra-wide-angle high-definition imaging system according to any one of claims 1 to 5, characterized in that, The distance T12 between the first lens (L1) and the second lens (L2) on the optical axis, and the distance T23 between the second lens (L2) and the third lens (L3) on the optical axis, satisfy the condition: 0.4≤T12 / T23≤1.

8.

19. The ultra-wide-angle high-definition imaging system according to any one of claims 1 to 5, characterized in that, The maximum effective radius D11 of the object side surface of the first lens (L1) and the maximum effective radius D21 of the object side surface of the second lens (L2) satisfy the condition: 1.4≤D11 / D21≤1.

8.

20. The ultra-wide-angle high-definition imaging system according to any one of claims 1 to 5, characterized in that, The center thickness CT5 of the fifth lens (L5) on the optical axis, the center thickness CT6 of the sixth lens (L6) on the optical axis, and the distance T56 between the fifth lens (L5) and the sixth lens (L6) on the optical axis satisfy the condition: 0≤T56 / (CT5+CT6)≤0.

6.

21. The ultra-wide-angle high-definition imaging system according to any one of claims 1 to 5, characterized in that, The maximum aperture D10 of the tenth lens (L10) and the image height h at the maximum field of view of the ultra-wide-angle high-definition imaging system satisfy the condition: 0.2≤D10 / h≤0.6.

Images