CN220323627U - High-pixel panoramic fisheye optical system and camera module - Google Patents
High-pixel panoramic fisheye optical system and camera module Download PDFInfo
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- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a high-pixel panoramic fisheye optical system and an image pickup module, which sequentially comprise a first lens, a second lens, a third lens, a fourth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens from an object plane to an image plane along an optical axis.
Description
Technical Field
The application relates to the field of optical imaging, in particular to a high-pixel panoramic fisheye optical system and a camera module.
Background
In recent years, with the wide application of panoramic VR/AR, the application scenes are diversified; the quality requirements on the lens are higher and higher, and the use requirements of wide photographing lovers cannot be met due to the design of a low-pixel small-target-surface COMS chip and a lens with poor large-volume imaging definition.
Disclosure of Invention
In order to solve the problem that the existing lens design is generally poor in imaging definition of a low-pixel small-target-surface COMS chip and a large volume, the application provides a high-pixel panoramic fisheye optical system, which has the advantages of high-pixel, large-target-surface, ultra-wide angle and athermalization design, is compact in structure, is convenient to process and install, and further improves the imaging effect of matched system equipment.
The high-pixel panoramic fisheye optical system sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens from an object plane to an image plane along an optical axis;
the first lens has negative focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface;
the second lens has negative focal power, and the image side surface of the second lens is a concave surface;
the third lens has positive focal power, the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface;
the fourth lens has negative focal power, and the object side surface of the fourth lens is a concave surface;
the sixth lens element with positive refractive power has a convex object-side surface and a convex image-side surface;
the seventh lens is provided with focal power, the object side surface of the seventh lens is a convex surface, and the image side surface of the seventh lens is a concave surface;
the eighth lens has negative focal power, the object side surface of the eighth lens is a convex surface, and the image side surface of the eighth lens is a concave surface;
the ninth lens element has positive refractive power, wherein an object-side surface thereof is convex, and an image-side surface thereof is convex;
the tenth lens has negative focal power, and an image side surface of the tenth lens is a convex surface.
Preferably, the optical system satisfies the following condition: d1/(Fno x Ymax) <4.03;
wherein D1 is the optical maximum effective diameter of the first lens, fno is the system aperture, ymax is the system maximum image circle radius.
Preferably, the optical system further includes a reflection element disposed between the fourth lens and the sixth lens, the reflection element being configured to reflect the light beam passing through the fourth lens to the sixth lens.
Preferably, the optical system satisfies the following condition:
(dn/dt)7<-3*10 -06 a/DEG C; and/or
R13/R12>0.8；
Wherein, (dn/dt) 7 is a seventh lens refractive index temperature coefficient, R12 is an object side curvature of the seventh lens, and R13 is an image side curvature of the seventh lens.
Preferably, the optical system satisfies the following condition:
f34/f 1< -1.5; and/or
1.61<f1/f2；
Wherein f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, and f34 is the effective combined focal length of the third lens and the fourth lens.
Preferably, the optical system satisfies the following condition: -2.8< f4/f3< -1.22; and/or
1.5<Vd4/Vd3<4.6；
Wherein f3 is the effective focal length of the third lens, f4 is the effective focal length of the fourth lens, vd3 is the abbe constant of the material of the third lens, and Vd4 is the abbe constant of the material of the fourth lens.
Preferably, the optical system satisfies the following condition: -1.23< f9/f8< -0.62; and/or
1.5<Vd16/Vd15<4.6；
Wherein f8 is the effective focal length of the eighth lens, f9 is the effective focal length of the ninth lens, vd15 is the abbe constant of the material of the eighth lens, and Vd16 is the abbe constant of the material of the ninth lens.
Preferably, the optical system satisfies the following condition: nd1>1.8; and/or
Nd5>1.8；
Wherein Nd1 is the refractive index of the first lens material, and Nd5 is the refractive index of the reflective element material.
Preferably, the full field angle FOV and the total optical length TTL of the optical system satisfy: the FOV is more than or equal to 180 degrees and less than or equal to 240 degrees, and the TTL is less than or equal to 35.0mm.
Preferably, the third lens and the fourth lens constitute an adhesive lens, the optical power of which is positive; and/or
The eighth lens and the ninth lens constitute an adhesive lens, the optical power of which is negative.
Preferably, the second lens, the sixth lens, the seventh lens and the tenth lens are all aspheric lenses;
the first lens, the third lens, the fourth lens, the eighth lens and the ninth lens are spherical lenses;
a diaphragm is located between the seventh lens and the eighth lens.
On the other hand, the embodiment of the application also provides an image pickup module, which at least comprises an optical lens, wherein the high-pixel panoramic fisheye optical system is installed in the optical lens.
Compared with the prior art, the beneficial effects of the application are as follows:
the optical system and the camera module of the embodiment of the utility model sequentially comprise the first lens, the second lens, the third lens, the fourth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens and the tenth lens from the object plane to the image plane along the optical axis, and can effectively reduce the volume of the optical system through reasonable lens shape and focal power collocation, realize the performance requirement of large aperture and high pixel, have the advantages of high pixel, large target plane, ultra wide angle and athermalization design, have compact structure, are convenient to process and install, and further improve the imaging effect of collocation the system equipment.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below.
Fig. 1 is a schematic structural diagram of an optical system or an image capturing module according to embodiment 1 of the present application;
fig. 2 is a distortion curve of the optical system or the camera module according to embodiment 1 of the present application;
fig. 3 is a schematic structural diagram of an optical system or an image capturing module according to embodiment 2 of the present application;
fig. 4 is a distortion curve of the optical system or the camera module according to embodiment 2 of the present application;
fig. 5 is a schematic structural diagram of an optical system or an image capturing module according to embodiment 3 of the present application;
FIG. 6 is a distortion curve of an optical system or camera module according to embodiment 3 of the present application;
Detailed Description
As shown in fig. 1-6, the present application provides a high-pixel panoramic fisheye optical system, which is sequentially formed from a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a reflective element 5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, and a tenth lens E10 along an optical axis from an object plane to an image plane;
the first lens element E1 has a negative refractive power, wherein an object-side surface thereof is convex, and an image-side surface thereof is concave;
the second lens E2 has negative focal power, and the image side surface of the second lens E2 is a concave surface;
the third lens element E3 has positive refractive power, and has a convex object-side surface and a convex image-side surface;
the fourth lens E4 has negative focal power, and the object side surface of the fourth lens E4 is a concave surface;
the reflecting component 5 is configured to reflect the light beam passing through the fourth lens E4 to the sixth lens E6;
the sixth lens element E6 has positive refractive power, wherein an object-side surface thereof is convex, and an image-side surface thereof is convex;
the seventh lens element E7 has optical power, wherein an object-side surface thereof is convex, and an image-side surface thereof is concave;
the eighth lens element E8 has negative refractive power, a convex object-side surface and a concave image-side surface;
the ninth lens element E9 has positive refractive power, wherein an object-side surface thereof is convex, and an image-side surface thereof is convex;
the tenth lens E10 has negative optical power, and an image side surface thereof is convex.
The embodiment of the application discloses high pixel panorama fisheye optical system, from object plane to image plane along the optical axis by first lens E1, second lens E2, third lens E3, fourth lens E4, reflection components and parts 5, sixth lens E6, seventh lens E7, eighth lens E8, ninth lens E9, tenth lens E10 constitute in proper order, through reasonable lens shape and focal power collocation, can effectively reduce optical system's volume, realize the performance demand of big light ring high pixel, collocation reflection components and parts 5's use, further reduced the height of system, but perfect compression equipment's overall dimension has high pixel, big target surface, super wide angle, athermalization design's advantage, compact structure, be convenient for processing and installation, further improved the imaging effect of collocating this system equipment.
Further, the optical system satisfies the following condition: d1/(Fno x Ymax) <4.03; wherein, D1 is the maximum effective optical diameter of the first lens E1, fno is the system aperture, ymax is the maximum image circle radius of the system, and the effective optical diameter of the first lens is defined by defining the maximum image circle and the aperture of the optical imaging system, so as to ensure that the system meets the miniaturization requirement.
Preferably, the optical system satisfies the following condition: (dn/dt) 7<-3*10 -06 a/DEG C; wherein, (dn/dt) 7 is the temperature coefficient of refractive index of the seventh lens E7, and the temperature performance is effectively improved by reasonably setting the temperature coefficient of refractive index of the seventh lens E7 to be negative.
Preferably, the optical system satisfies the following condition: R13/R12>0.8; wherein R12 is the object-side curvature of the seventh lens E7, and R13 is the image-side curvature of the seventh lens E7. By controlling the curvature radius of the object side surface and the image side surface of the seventh lens E7, the incidence angle of the chief ray of each view field of the optical imaging lens on the image plane can be reasonably controlled, and the requirement of the optical system on designing the incidence angle of the chief ray is met. Meanwhile, the negative refractive index temperature coefficient is matched, so that the temperature performance is effectively improved.
Preferably, the optical system satisfies the following condition: f34/f 1< -1.5; wherein f1 is the effective focal length of the first lens E1, and f34 is the effective combined focal length of the third lens E3 and the fourth lens E4. The effective focal length ratio range of the first lens E1 and the bonding lens 1 is reasonably controlled, so that the optical system can meet a large field angle, the effective diameter of the part is limited, the size of the whole optical system is controlled, the incidence angle of light is regulated, and the correction of aberration by the rear group of the system is facilitated.
Preferably, the optical system satisfies the following condition: 1.61< f1/f2; wherein f1 is the effective focal length of the first lens E1, f2 is the effective focal length of the second lens E2, and the ratio of the effective focal lengths of the first lens E1 and the second lens E2 of the optical system is controlled, so that on one hand, the height of incident light rays of the light beam entering the optical system is controlled, and the advanced aberration of the optical system and the outer diameter of the lens are reduced; on the other hand, the use of the second lens E2 together with the aspheric surface can better correct the distortion of the system while controlling the cost, and reduce the astigmatic quantity to meet the requirement of customers on pixel density.
Preferably, the optical system satisfies the following condition: -2.8< f4/f3< -1.22; wherein, f3 is the effective focal length of the third lens E3, and f4 is the effective focal length of the fourth lens E4, and by limiting the effective focal length ratio of the third lens E3 and the fourth lens E4, the light deflection angle of the optical system can be small, and the tolerance sensitivity of the component can be effectively reduced.
Preferably, the optical system satisfies the following condition: 1.5< Vd4/Vd3<4.6; the design can effectively weaken chromatic aberration, optimize lens aberration and further effectively improve imaging quality of a system, wherein Vd3 is the abbe constant of the material of the third lens E3, vd4 is the abbe constant of the material of the fourth lens E4.
Preferably, the optical system satisfies the following condition: -1.23< f9/f8< -0.62,1.5< Vd16/Vd15<4.6; wherein f8 is the effective focal length of the eighth lens element E8, f9 is the effective focal length of the ninth lens element E9, vd15 is the abbe constant of the material of the eighth lens element E8, vd16 is the abbe constant of the material of the ninth lens element E9, and the astigmatism of the system can be effectively corrected by limiting the effective focal length ratio of the eighth lens element E8 and the ninth lens element E9, thereby ensuring the image quality of the edge field of view. Meanwhile, the Abbe number of the materials is reasonably matched, so that the chromatic aberration of the system can be further reduced, and the imaging quality of the system can be improved.
Preferably, the optical system satisfies the following condition: nd1>1.8, nd5>1.8; wherein, nd1 is the refractive index of the first lens E1 material, nd5 is the refractive index of the reflective element 5 material, and through the use of high refractive index material, the outer diameter of the product is further reduced, and the small-size requirement of customers is satisfied.
Preferably, the full field angle FOV and the total optical length TTL of the optical system satisfy: the FOV is more than or equal to 180 degrees and less than or equal to 240 degrees, and the TTL is less than or equal to 35.0mm.
Preferably, the third lens E3 and the fourth lens E4 constitute an adhesive lens, the optical power of which is positive; the use of the adhesive lens effectively reduces the position chromatic aberration and the multiplying power chromatic aberration data existing in the system.
Preferably, the eighth lens E8 and the ninth lens E9 constitute an adhesive lens, the optical power of which is negative; the use of the adhesive lens can effectively correct the astigmatic quantity of the system, thereby ensuring the image quality of the marginal view field. Meanwhile, the position chromatic aberration and the multiplying power chromatic aberration data existing in the system are further reduced.
Preferably, the optical system satisfies the following condition: the second lens E2, the sixth lens E6, the seventh lens E7, and the tenth lens E10 are aspheric lenses; the first lens E1, the third lens E3, the fourth lens E4, the eighth lens E8, and the ninth lens E9 are spherical lenses; the diaphragm is positioned between the seventh lens E7 and the eighth lens E8, has the advantages of high pixels, large target surface, super wide angle and athermalization design, is compact in structure, is convenient to process and install, and further improves the imaging effect of the system equipment.
Specifically, as a preferred embodiment of the present utility model, but not limited thereto, as shown in example 1 of fig. 1-2, an optical imaging lens according to an exemplary embodiment of the present application includes, in order from an object side to an image side along an optical axis: the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the reflective element 5, the sixth lens E6, the seventh lens E7, STO, the eighth lens E8, the ninth lens E9, the tenth lens E10, the filter E11, and the imaging plane S22.
The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S6 thereof is concave, and an image-side surface S7 thereof is concave. The two side surfaces of the reflecting element 5 are S8 and S9, respectively. The sixth lens element E6 has positive refractive power, wherein an object-side surface S10 thereof is convex, and an image-side surface S11 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S12 thereof is convex, and an image-side surface S13 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The ninth lens element E9 has positive refractive power, wherein an object-side surface S16 thereof is convex, and an image-side surface S17 thereof is convex. The tenth lens element E10 has negative refractive power, wherein the object-side surface S18 is concave, and the image-side surface S19 is convex. The filter E11 has an object side surface S20 and an image side surface S21. Light from the object sequentially passes through the respective surfaces S1 to S21 and is finally imaged on the imaging surface S22.
Table 1 shows the surface types, the radii of curvature, the thicknesses, and the materials of the respective lenses of the optical imaging lens of embodiment 1, wherein the radii of curvature and the thicknesses are each in millimeters (mm).
Table 1: example 1 basic parameters of an optical System
| Face number | Surface type | Radius of curvature (mm) | Thickness (mm) | Material |
| OBJ | Spherical surface | 100000 | 1000 | |
| S1 | Spherical surface | 18.8017 | 1.8360 | 2.00,28.3 |
| S2 | Spherical surface | 6.6014 | 4.9011 | |
| S3 | Aspherical surface | -22.2779 | 1.2240 | 1.77,49.6 |
| S4 | Aspherical surface | 5.9489 | 2.3052 | |
| S5 | Spherical surface | 87.7384 | 2.0808 | 2.00,28.3 |
| S6 | Spherical surface | -9.9124 | 0.6120 | 1.59,68.3 |
| S7 | Spherical surface | 34.5005 | 0.5355 | |
| S8 | Plane surface | Infinity is provided | 9.170 | 2.00,25.4 |
| S9 | Plane surface | Infinity is provided | 0.1 | |
| S10 | Aspherical surface | 4.5586 | 2.4480 | 1.62,63.9 |
| S11 | Aspherical surface | -10.8428 | 0.0816 | |
| S12 | Aspherical surface | 4.4256 | 1.2138 | 1.62,63.9 |
| S13 | Aspherical surface | 6.0090 | 0.2346 | |
| STO | Plane surface | Infinity is provided | 0.1836 | |
| S15 | Spherical surface | 24.7411 | 0.5712 | 1.85,23.8 |
| S16 | Spherical surface | 2.4704 | 1.8462 | 1.57,71.3 |
| S17 | Spherical surface | -9.7910 | 0.2397 | |
| S18 | Aspherical surface | -47.7274 | 1.3974 | 1.88,37.2 |
| S19 | Aspherical surface | 52.5997 | 0.612 | |
| S20 | Plane surface | Infinity is provided | 0.3000 | 1.49,71.2 |
| S21 | Plane surface | Infinity is provided | 0.916 | |
| S22 | Plane surface | Infinity is provided | / |
In table 1, the object side surface and the image side surface of each of the first lens E2, the sixth lens E6, the seventh lens E7 and the tenth lens E10 are aspherical surfaces, and the surface shape of each aspherical lens can be defined by, but not limited to, the following aspherical surface formula:
wherein x is the distance from the corresponding point on the aspheric surface to the plane tangent to the vertex of the surface, h is the distance from the corresponding point on the aspheric surface to the optical axis, c is the curvature of the vertex of the aspheric surface, k is the conic coefficient, ai is the coefficient corresponding to the i-th higher term in the aspheric surface formula. The cone coefficients and higher order coefficients A4, A6, A8, a10, a12, a14 and a16 for each of the aspherical surfaces usable in example 1 are given in table 2.
Table 2: example 1 aspherical correlation value of lens surface
Fig. 1 shows a schematic structural diagram of an optical imaging lens according to embodiment 1 of the present application, and fig. 2 shows a distortion curve of the optical imaging lens of embodiment 1. The image has the advantages of high pixels, large target surface, ultra wide angle, athermalization design, compact structure, convenient processing and installation and further improvement of imaging effect matched with the system equipment.
Specifically, as a preferred embodiment of the present utility model, but not limited thereto, as shown in example 2 of fig. 3 to 4, the optical axis includes, in order from the object side to the image side: the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the reflective element 5, the sixth lens E6, the seventh lens E7, STO, the eighth lens E8, the ninth lens E9, the tenth lens E10, the filter E11, and the imaging plane S22.
The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S6 thereof is concave, and an image-side surface S7 thereof is concave. The two side surfaces of the reflecting component 5 are respectively S8 and S9; the sixth lens element E6 has positive refractive power, wherein an object-side surface S10 thereof is convex, and an image-side surface S11 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S12 thereof is convex, and an image-side surface S13 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The ninth lens element E9 has positive refractive power, wherein an object-side surface S16 thereof is convex, and an image-side surface S17 thereof is convex. The tenth lens element E10 has negative refractive power, wherein the object-side surface S18 is concave, and the image-side surface S19 is convex. The filter E11 has an object side surface S20 and an image side surface S21. Light from the object sequentially passes through the respective surfaces S1 to S21 and is finally imaged on the imaging surface S22.
Table 3 shows the surface types, the radii of curvature, the thicknesses, and the materials of the respective lenses of the optical imaging lens of example 2, in which the unit of the radii of curvature and the thicknesses is millimeter (mm).
Table 3: example 2 basic parameters of an optical System
| Face number | Surface type | Radius of curvature (mm) | Thickness (mm) | Material |
| OBJ | Spherical surface | 100000 | 1000 | |
| S1 | Spherical surface | 18.4395 | 1.8000 | 2.00,28.3 |
| S2 | Spherical surface | 6.4715 | 4.8057 | |
| S3 | Aspherical surface | -21.6347 | 1.2000 | 1.77,49.6 |
| S4 | Aspherical surface | 5.8605 | 2.2623 | |
| S5 | Spherical surface | 82.9471 | 2.0318 | 2.00,28.3 |
| S6 | Spherical surface | -9.8796 | 0.6000 | 1.59,68.3 |
| S7 | Spherical surface | 36.7757 | 0.5122 | |
| S8 | Plane surface | Infinity is provided | 9.0000 | 2.00,25.4 |
| S9 | Plane surface | Infinity is provided | 0.1000 | |
| S10 | Aspherical surface | 4.5460 | 2.3821 | 1.62,63.9 |
| S11 | Aspherical surface | -10.0901 | 0.0800 | |
| S12 | Aspherical surface | 4.3717 | 1.1680 | 1.62,63.9 |
| S13 | Aspherical surface | 5.4879 | 0.2413 | |
| STO | Plane surface | Infinity is provided | 0.1988 | |
| S15 | Spherical surface | 21.8614 | 0.5600 | 1.85,23.8 |
| S16 | Spherical surface | 2.5195 | 1.8480 | 1.59,68.5 |
| S17 | Spherical surface | -9.4206 | 0.2524 | |
| S18 | Aspherical surface | -35.0556 | 1.3194 | 1.88,37.2 |
| S19 | Aspherical surface | 50.2217 | 0.6000 | |
| S20 | Plane surface | Infinity is provided | 0.3000 | 1.49,71.2 |
| S21 | Plane surface | Infinity is provided | 0.8188 | |
| S22 | Plane surface | Infinity is provided | / |
In table 3, the object side surface and the image side surface of each of the first lens E2, the sixth lens E6, the seventh lens E7 and the tenth lens E10 are aspherical surfaces, and the surface shape of each aspherical lens can be defined by, but not limited to, the following aspherical surface formula:
wherein x is the distance from the corresponding point on the aspheric surface to the plane tangent to the vertex of the surface, h is the distance from the corresponding point on the aspheric surface to the optical axis, c is the curvature of the vertex of the aspheric surface, k is the conic coefficient, ai is the coefficient corresponding to the i-th higher term in the aspheric surface formula. The cone coefficients and higher order coefficients A4, A6, A8, a10, a12, a14 and a16 for each of the aspherical surfaces usable in example 2 are given in table 4.
Table 4: example 2 aspherical correlation values of lens surfaces
Fig. 3 shows a schematic structural diagram of an optical imaging lens according to embodiment 2 of the present application, and fig. 4 shows a distortion curve of the optical imaging lens of embodiment 2. The image has the advantages of high pixels, large target surface, ultra wide angle, athermalization design, compact structure, convenient processing and installation and further improvement of imaging effect matched with the system equipment.
Specifically, as a preferred embodiment of the present utility model, but not limited thereto, as shown in example 3 of fig. 5 to 6, the optical axis includes, in order from the object side to the image side: the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the reflective element 5, the sixth lens E6, the seventh lens E7, STO, the eighth lens E8, the ninth lens E9, the tenth lens E10, the filter E11, and the imaging plane S22.
The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S6 thereof is concave and an image-side surface S7 thereof is convex. The two side surfaces of the reflecting component 5 are respectively S8 and S9; the sixth lens element E6 has positive refractive power, wherein an object-side surface S10 thereof is convex, and an image-side surface S11 thereof is convex. The seventh lens element E7 has negative refractive power, wherein an object-side surface S12 thereof is convex and an image-side surface S13 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The ninth lens element E9 has positive refractive power, wherein an object-side surface S16 thereof is convex, and an image-side surface S17 thereof is convex. The tenth lens element E10 has negative refractive power, wherein the object-side surface S18 is concave, and the image-side surface S19 is convex. The filter E11 has an object side surface S20 and an image side surface S21. Light from the object sequentially passes through the respective surfaces S1 to S21 and is finally imaged on the imaging surface S22.
Table 5 shows the surface types, the radii of curvature, the thicknesses, and the materials of the respective lenses of the optical imaging lens of example 3, in which the unit of the radii of curvature and the thicknesses is millimeter (mm).
Table 5: example 3 basic parameters of an optical System
| Face number | Surface type | Radius of curvature (mm) | Thickness (mm) | Material |
| OBJ | Spherical surface | 100000 | 1000 | |
| S1 | Spherical surface | 18.6268 | 2.2000 | 2.00,28.3 |
| S2 | Spherical surface | 6.4803 | 4.8335 | |
| S3 | Aspherical surface | -16.9752 | 1.2000 | 1.77,49.6 |
| S4 | Aspherical surface | 6.4628 | 1.9703 | |
| S5 | Spherical surface | 21.0789 | 1.8000 | 1.76,26.6 |
| S6 | Spherical surface | -21.6866 | 0.6000 | 1.73,54.7 |
| S7 | Spherical surface | -254.0905 | 0.3179 | |
| S8 | Plane surface | Infinity is provided | 9.160 | 2.00,25.4 |
| S9 | Plane surface | Infinity is provided | 0.1 | |
| S10 | Aspherical surface | 5.5912 | 2.1021 | 1.80,45.4 |
| S11 | Aspherical surface | -18.2609 | 0.1000 | |
| S12 | Aspherical surface | 3.7251 | 1.2336 | 1.50,81.6 |
| S13 | Aspherical surface | 3.1998 | 0.2574 | |
| STO | Plane surface | Infinity is provided | 0.1339 | |
| S15 | Spherical surface | 6.4755 | 0.5000 | 1.95,17.9 |
| S16 | Spherical surface | 2.4500 | 1.7223 | 1.57,71.3 |
| S17 | Spherical surface | -9.4230 | 0.6145 | |
| S18 | Aspherical surface | -30.0000 | 1.2489 | 1.88,37.2 |
| S19 | Aspherical surface | 52.7361 | 0.6000 | |
| S20 | Plane surface | Infinity is provided | 0.3000 | 1.49,71.2 |
| S21 | Plane surface | Infinity is provided | 0.9664 | |
| S22 | Plane surface | Infinity is provided |
In table 5, the object side surface and the image side surface of each of the first lens E2, the sixth lens E6, the seventh lens E7 and the tenth lens E10 are aspherical surfaces, and the surface shape of each aspherical lens can be defined by, but not limited to, the following aspherical surface formula:
wherein x is the distance from the corresponding point on the aspheric surface to the plane tangent to the vertex of the surface, h is the distance from the corresponding point on the aspheric surface to the optical axis, c is the curvature of the vertex of the aspheric surface, k is the conic coefficient, ai is the coefficient corresponding to the i-th higher term in the aspheric surface formula. The cone coefficients and higher order coefficients A4, A6, A8, a10, a12, a14 and a16 for each of the aspherical surfaces usable in example 3 are shown in table 6.
Table 6: example 3 aspherical correlation values of lens surfaces
Further, in examples 1-3, the basic data are as follows in Table 7:
table 7: EXAMPLES 1-3 basic data
| Basic data/embodiment | Example 1 | Example 2 | Example 3 |
| f1(mm) | -10.90 | -10.68 | -10.83 |
| f2(mm) | -5.93 | -5.82 | -5.89 |
| f3(mm) | 8.92 | 8.84 | 14.20 |
| f4(mm) | -12.89 | -13.04 | -32.44 |
| F6(mm) | 5.51 | 5.39 | 5.54 |
| F7(mm) | 20.92 | 24.73 | -207.89 |
| F8(mm) | -3.26 | -3.38 | -4.39 |
| F9(mm) | 3.66 | 3.55 | 3.60 |
| F10(mm) | -27.99 | -23.08 | -21.38 |
| f(mm) | 1.731 | 1.66 | 1.861 |
| F34(mm) | 27.60 | 26.28 | 24.58 |
| F89(mm) | -63.98 | 223.24 | 18.22 |
| TTL(mm) | 32.81 | 32.08 | 31.96 |
| Fno | 2.00 | 2.0 | 2.0 |
| FOV(°) | 200.0 | 200.0 | 200.0 |
Still further, in examples 1 to 3, each conditional expression satisfies the condition of the following table 8:
table 8: examples 1 to 3 conditional conditions
| Condition/example | 1 | 2 | 3 |
| D1 | 22.86 | 22.48 | 23.40 |
| Ymax | 3.291 | 3.161 | 3.469 |
| Vd3 | 28.32 | 28.32 | 26.61 |
| Vd4 | 68.53 | 68.52 | 54.67 |
| R12 | 4.4256 | 4.3717 | 3.7251 |
| R13 | 6.0090 | 5.4879 | 3.1998 |
| Nd1 | 2.00 | 2.00 | 2.00 |
| Nd5 | 2.00 | 2.00 | 2.00 |
| Vd15 | 23.79 | 23.79 | 17.94 |
| Vd16 | 71.31 | 68.53 | 71.31 |
| D1/(Fno*Ymax) | 3.473 | 3.556 | 3.373 |
| f34/f1 | -2.532 | -2.461 | -2.270 |
| f4/f3 | -1.445 | -1.475 | -2.285 |
| Vd4/Vd3 | 2.42 | 2.42 | 2.05 |
| R13/R12 | 1.358 | 1.255 | 0.859 |
| f9/f8 | -1.124 | -1.049 | -0.820 |
| Vd16/Vd15 | 2.998 | 2.881 | 3.974 |
| f1/f2 | 1.838 | 1.834 | 1.837 |
The imaging module comprises at least an optical lens, wherein the high-pixel panoramic fisheye optical system is arranged in the optical lens, the optical system sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a reflecting element, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens from an object plane to an image plane along an optical axis, the volume of the optical system can be effectively reduced through reasonable lens shape and focal power collocation, the performance requirement of a large aperture and high pixels is realized, the use of a reflecting element is matched, the height of the system is further reduced, the appearance size of equipment can be perfectly compressed, the equipment has the advantages of high pixels, a large target surface, a super wide angle and no thermal design, the structure is compact, the processing and the installation are convenient, and the imaging effect of collocating the equipment of the system is further improved.
The foregoing description of one or more embodiments provided in connection with the specific disclosure is not intended to limit the practice of the utility model to such description. The method, structure, etc. similar to or identical to those of the present utility model, or some technical deductions or substitutions are made on the premise of the inventive concept, should be regarded as the protection scope of the present utility model.
Claims (10)
1. High pixel panorama fisheye optical system, its characterized in that: the lens comprises a first lens, a second lens, a third lens, a fourth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens in sequence from an object plane to an image plane along an optical axis;
the first lens has negative focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface;
the second lens has negative focal power, and the image side surface of the second lens is a concave surface;
the third lens has positive focal power, the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface;
the fourth lens has negative focal power, and the object side surface of the fourth lens is a concave surface;
the sixth lens element with positive refractive power has a convex object-side surface and a convex image-side surface;
the seventh lens is provided with focal power, the object side surface of the seventh lens is a convex surface, and the image side surface of the seventh lens is a concave surface;
the eighth lens has negative focal power, the object side surface of the eighth lens is a convex surface, and the image side surface of the eighth lens is a concave surface;
the ninth lens element has positive refractive power, wherein an object-side surface thereof is convex, and an image-side surface thereof is convex;
the tenth lens has negative focal power, and an image side surface of the tenth lens is a convex surface.
2. The high pixel panoramic fisheye optical system of claim 1, wherein the optical system satisfies the following condition:
the optical system satisfies the following conditions: d1/(Fno x Ymax) <4.03;
wherein D1 is the optical maximum effective diameter of the first lens, fno is the system aperture, ymax is the system maximum image circle radius.
3. The high pixel panorama fisheye optical system according to claim 1, further comprising a reflective element disposed between the fourth lens and the sixth lens, the reflective element configured to reflect the light beam passing through the fourth lens to the sixth lens.
4. The high pixel panoramic fisheye optical system of claim 1, wherein the optical system satisfies the following condition:
(dn/dt)7<-3*10 -06 a/DEG C; and/or
R13/R12>0.8；
Wherein, (dn/dt) 7 is a seventh lens refractive index temperature coefficient, R12 is an object side curvature of the seventh lens, and R13 is an image side curvature of the seventh lens.
5. The high pixel panoramic fisheye optical system of any one of claims 1-4, wherein the optical system satisfies the following condition:
f34/f 1< -1.5; and/or
1.61< f1/f2; and/or
-2.8< f4/f3< -1.22; and/or
1.5<Vd4/Vd3<4.6；
Wherein f1 is an effective focal length of the first lens, f2 is an effective focal length of the second lens, f34 is an effective combined focal length of the third lens and the fourth lens, f3 is an effective focal length of the third lens, f4 is an effective focal length of the fourth lens, vd3 is an abbe constant of a material of the third lens, and Vd4 is an abbe constant of a material of the fourth lens.
6. The high pixel panoramic fisheye optical system of any one of claims 1-4, wherein the optical system satisfies the following condition: -1.23< f9/f8< -0.62; and/or
1.5< Vd16/Vd15<4.6; and/or
Nd1>1.8; and/or
Nd5>1.8；
Wherein f8 is the effective focal length of the eighth lens, f9 is the effective focal length of the ninth lens, vd15 is the abbe constant of the material of the eighth lens, vd16 is the abbe constant of the material of the ninth lens, nd1 is the refractive index of the material of the first lens, and Nd5 is the refractive index of the material of the reflective element.
7. The high pixel panoramic fisheye optical system of any one of claims 1-4, wherein the full field angle FOV, optical total length TTL of said optical system satisfies: the FOV is more than or equal to 180 degrees and less than or equal to 240 degrees, and the TTL is less than or equal to 35.0mm.
8. The high pixel panoramic fisheye optical system of any one of claims 1-4, wherein said third lens and said fourth lens comprise a cemented lens having positive optical power; and/or
The eighth lens and the ninth lens constitute an adhesive lens, the optical power of which is negative.
9. The high pixel panoramic fisheye optical system of any one of claims 1-4, wherein the second lens, the sixth lens, the seventh lens, and the tenth lens are aspheric lenses;
the first lens, the third lens, the fourth lens, the eighth lens and the ninth lens are spherical lenses;
a diaphragm is located between the seventh lens and the eighth lens.
10. An image pickup module at least comprising an optical lens, wherein the high-pixel panoramic fisheye optical system of any one of claims 1-9 is installed in the optical lens.
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