CN213780522U - High-resolution large-target-surface 4-10mm day and night zooming monitoring lens - Google Patents
High-resolution large-target-surface 4-10mm day and night zooming monitoring lens Download PDFInfo
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- CN213780522U CN213780522U CN202022840272.6U CN202022840272U CN213780522U CN 213780522 U CN213780522 U CN 213780522U CN 202022840272 U CN202022840272 U CN 202022840272U CN 213780522 U CN213780522 U CN 213780522U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- 230000003287 optical effect Effects 0.000 claims abstract description 6
- 239000011521 glass Substances 0.000 claims description 16
- 230000014509 gene expression Effects 0.000 claims description 7
- 230000005499 meniscus Effects 0.000 claims description 5
- 125000005647 linker group Chemical group 0.000 claims description 3
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- 239000000463 material Substances 0.000 description 2
- 235000012149 noodles Nutrition 0.000 description 2
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Abstract
The invention relates to a high-resolution large-target-surface 4-10mm day and night zooming monitoring lens, which comprises a front lens group with negative focal power, an aperture diaphragm, a rear lens group with positive focal power and an optical filter which are sequentially arranged along the incident direction of light rays, wherein the interval between the front lens group and the aperture diaphragm is D1, the interval between the rear lens group and the aperture diaphragm is D2, and the interval between D1 and D2 meets the conditions that D1 is 1.5< 11 and D2<6 is 0.1.
Description
Technical Field
The invention relates to a day and night zooming monitoring lens with a high resolution and a large target surface of 4-10 mm.
Background
With the increase of the application of monitoring scenes, the requirements on the resolution, high strength and wide applicable temperature range of the monitoring lens are higher and higher. The lens is large in number, complex in structure and long in processing period, so that the lens is high in cost and low in production yield.
Disclosure of Invention
The invention aims to provide a high-resolution large-target-surface 4-10mm day and night zooming monitoring lens.
The technical scheme of the invention is that the day and night zooming monitoring lens with high resolution and large target surface of 4-10mm comprises a front lens group with negative focal power, an aperture diaphragm, a rear lens group with positive focal power and an optical filter which are sequentially arranged along the incident direction of light; the front lens group comprises a meniscus glass lens A-1 with negative focal power, a biconcave aspheric plastic lens A-2 with negative focal power and an aspheric plastic lens A-3 with positive focal power which are arranged in sequence; the rear lens group comprises a bonding group consisting of a biconvex glass lens B-1 with positive focal power and a falcate glass lens B-2 with positive focal power, a biconvex aspheric plastic lens B-3 with positive focal power, a biconcave aspheric plastic lens B-4 with negative focal power and a falcate aspheric plastic lens B-5 with positive focal power which are arranged in sequence.
Further, the distance between the front lens group and the aperture stop is D1, the distance between the rear lens group and the aperture stop is D2, and the distance between D1 and D2 satisfies 1.5< D1<11, and 0.1< D2< 6.
Furthermore, the refractive indexes (n1-n8) of the 8 lenses in sequence along the incident direction of the light rays satisfy the following relational expressions that 1.4 is equal to or more than n1 and is equal to or less than 1.8, 1.5 is equal to or more than n2 and is equal to or less than 1.7, 1.5 is equal to or more than n3 and is equal to or less than 1.7, 1.4 is equal to or more than n4 and is equal to or less than 1.75, 1.5 is equal to or more than n5 and is equal to or less than 1.8, 1.5 is equal to or more than n6 and is equal to or less than 1.7, 1.5 is equal to or more than n7 and is equal to or less than 1.7, and 1.5 is equal to or less than n8 and is equal to or less than 1.7.
Furthermore, the lens focal lengths (f1-f8) of the 8 lenses in sequence along the incident direction of the light ray satisfy the following relational expression: f1 is more than or equal to 26.3 and less than or equal to-6.9, f2 is more than or equal to 26.8 and less than or equal to-5, f3 is more than or equal to 10 and less than or equal to 50.4, f4 is more than or equal to 5.3, f5 is more than or equal to 20 and less than or equal to 60, f6 is more than or equal to 6.4 and less than or equal to 20.3, f7 is more than or equal to 35.7 and less than or equal to-2.8, and f8 is more than or equal to 4.6 and less than or equal to 20.3.
Furthermore, the curvature radius R values (R1-R16) of the 8 lenses in sequence along the incident direction of the light ray satisfy the following relational expression: r1 is more than or equal to 50mm and less than or equal to 100mm, R2 is more than or equal to 4mm and less than or equal to 10mm, R3 is more than or equal to 30mm and less than or equal to 30mm, R5 is more than or equal to 5mm and less than or equal to 20mm, R6 is more than or equal to 150mm and more than or equal to 30mm, R8 is more than or equal to 4mm and less than or equal to 10mm, R9 is more than or equal to 10mm and less than or equal to-4 mm, R10 is more than or equal to-4 mm and less than or equal to 5mm and less than or equal to 20mm, R12 is more than or equal to-4 mm and less than or equal to-15 mm and less than or equal to 3mm, R14 is more than or equal to 5mm and less than or equal to 30mm, R15 is more than or equal to 4mm and less than or equal to 20mm, and less than or equal to 5mm and less than or equal to 30mm 16.
Compared with the prior art, the invention has the following beneficial effects: the lens has the advantages of simple structure, small number of lenses, easy production, low cost, high resolution, large target surface and glass-plastic mixed day and night zooming monitoring.
The invention is explained in further detail below with reference to the figures and the detailed description.
Drawings
Fig. 1 is an optical structure diagram of the lens.
In the figure: g1-front lens group; a-1-meniscus glass lens A-1; a-2-a biconcave aspheric plastic lens A-2; a-3-aspheric plastic lens A-3; g2-rear lens group; b-1-biconvex glass lens B-1; b-2-a meniscus glass lens with positive focal power B-2; b-3-biconvex aspheric plastic lens B-3; b-4-double concave aspheric plastic lens B-4; b-5-a meniscus aspherical plastic lens B-5; c-aperture diaphragm; a D-filter.
Detailed Description
As shown in FIG. 1, a high-resolution large-target-surface 4-10mm day and night zoom monitoring lens comprises a front lens group with negative focal power, an aperture diaphragm, a rear lens group with positive focal power and an optical filter which are sequentially arranged along the incident direction of light rays; the front lens group comprises a meniscus glass lens A-1 with negative focal power, a biconcave aspheric plastic lens A-2 with negative focal power and an aspheric plastic lens A-3 with positive focal power which are arranged in sequence; the rear lens group comprises a bonding group consisting of a biconvex glass lens B-1 with positive focal power and a falcate glass lens B-2 with positive focal power, a biconvex aspheric plastic lens B-3 with positive focal power, a biconcave aspheric plastic lens B-4 with negative focal power and a falcate aspheric plastic lens B-5 with positive focal power which are arranged in sequence.
In the present embodiment, the interval between the front lens group and the aperture stop is D1, the interval between the rear lens group and the aperture stop is D2, and the interval between D1 and D2 satisfies 1.5< D1<11, 0.1< D2< 6.
In the embodiment, the refractive indexes (n1-n8) of the 8 lenses in sequence along the light incidence direction satisfy the following relational expressions that 1.4-n 1 is more than or equal to 1.8, 1.5-n 2 is more than or equal to 1.7, 1.5-n 3 is more than or equal to 1.7, 1.4-n 4 is more than or equal to 1.75, 1.5-n 5 is more than or equal to 1.8, 1.5-n 6 is more than or equal to 1.7, 1.5-n 7 is more than or equal to 1.7, and 1.5-n 8 is more than or equal to 1.7.
In this embodiment, the focal lengths (f1-f8) of the 8 lenses in sequence along the incident direction of the light ray satisfy the following relation: f1 is more than or equal to 26.3 and less than or equal to-6.9, f2 is more than or equal to 26.8 and less than or equal to-5, f3 is more than or equal to 10 and less than or equal to 50.4, f4 is more than or equal to 5.3 and less than or equal to 40.3, f5 is more than or equal to 20 and less than or equal to 60, f6 is more than or equal to 6.4 and less than or equal to 20.3, f7 is more than or equal to 35.7 and less than or equal to-2.8, and f8 is more than or equal to 4.6 and less than or equal to 20.3.
In the present embodiment, the curvature radius R values (R1-R16) of the 8 lenses in sequence along the incident direction of the light ray satisfy the following relation: r1 is more than or equal to 50mm and less than or equal to 100mm, R2 is more than or equal to 4mm and less than or equal to 10mm, R3 is more than or equal to 30mm and less than or equal to 30mm, R5 is more than or equal to 5mm and less than or equal to 20mm, R6 is more than or equal to 150mm and more than or equal to 30mm, R8 is more than or equal to 4mm and less than or equal to 10mm, R9 is more than or equal to 10mm and less than or equal to-4 mm, R10 is more than or equal to-4 mm and less than or equal to 5mm and less than or equal to 20mm, R12 is more than or equal to-4 mm and less than or equal to-15 mm and less than or equal to 3mm, R14 is more than or equal to 5mm and less than or equal to 30mm, R15 is more than or equal to 4mm and less than or equal to 20mm, and less than or equal to 5mm and less than or equal to 30mm 16.
In this embodiment, the second and third lenses use plastic aspheric lenses, and the conventional glass double-cemented lens is changed into two plastic aspheric lenses, so as to greatly correct the spherical aberration of the light converged by the first glass lens, and the fourth and fifth lenses use a cemented structure, so as to greatly correct the chromatic aberration of the system, thereby achieving better image quality, and the fourth lens preferably uses a glass material with low refractive index and ultrahigh abbe number, and the fifth lens uses a glass material with high refractive index and high abbe number, and the sixth, seventh and eighth lenses use plastic aspheric lenses, so as to correct some of the remaining high-grade aberrations and distortions of the system, and on the premise of correcting the system aberrations, it is ensured that the included angle of the chief ray of the extreme edge field of view of the system is less than 13 °.
In this embodiment, the zoom focal length of the lens is in the range of 4.3mm to 9.8mm, the F range of the aperture: 1.6 to 2.7, the field angle range is 134 to 51 degrees, the total length is less than 51mm, and the use under the high-temperature and low-temperature environment is satisfied (-30 to 80 ℃).
In this embodiment, the imaging range of the lens is not less than 9.2mm, the resolution is not less than 4MP (4 megapixels), the wavelength range is 430nm to 850nm, and the lens is suitable for day and night confocal monitoring.
In the present embodiment, the optical parameters of each lens are as follows:
| number of noodles | Surface type | Radius R | Thickness of | | k value | |
| 1 | Spherical surface | 68.4 | 0.89 | 1.73 | ||
| 2 | Spherical surface | 8.6 | 5.14 | |||
| 3 | Aspherical surface | -12.5 | 2.03 | 1.53 | -11.2 | |
| 4 | Aspherical surface | 22.8 | 0.29 | -0.4 | ||
| 5 | Aspherical surface | 12.9 | 2.91 | 1.64 | -12.9 | |
| 6 | Aspherical surface | 135.8 | 1.94 | 60.3 | ||
| Diaphragm | Plane surface | infinity | 0.25 | |||
| 8 | Spherical surface | 8.2 | 5.02 | 1.43 | ||
| 9 | Spherical surface | -8.2 | 0.87 | 1.62 | ||
| 10 | Spherical surface | -14.7 | 0.25 | |||
| 11 | Aspherical surface | 11.7 | 5.32 | 1.53 | -8.2 | |
| 12 | Aspherical surface | -7.3 | 0.15 | -32.5 | ||
| 13 | Aspherical surface | -4.9 | 1.28 | 1.64 | -14.0 | |
| 14 | Aspherical surface | 20.3 | 1.06 | -82.7 | ||
| 15 | Aspherical surface | 5.4 | 1.71 | 1.64 | -7.6 | |
| 16 | Aspherical surface | 10.6 | 9.35 | -12.3 |
The aspheric lens surface equation is as follows:
in the formula, the parameter c is the curvature corresponding to the radius, r is the radial coordinate, the unit of the radial coordinate is the same as the unit of the lens length, k is the coefficient of a conical quadratic curve, when the k coefficient is less than-1, the surface-shaped curve is a hyperbolic curve, when the k coefficient is equal to-1, the curve is a parabola, when the k coefficient is between-1 and 0, the curve is an ellipse, when the k coefficient is equal to 0, the curve is a circle, when the k coefficient is greater than 0, the curve is an oblate, and alpha 1 to alpha 8 respectively represent the coefficients corresponding to the radial coordinates, and the shape and the size of the aspheric lens can be accurately set through the parameters.
| Number of noodles | A2 parameter | A3 parameter | A4 parameter | A5 parameter | A6 |
| 3 | 1.77E-04 | -1.26E-05 | 2.26E-07 | -1.34E-09 | -1.67E-12 |
| 4 | 6.30E-04 | -1.63E-07 | -6.62E-07 | 1.95E-08 | -1.81E-10 |
| 5 | 3.88E-04 | 1.61E-06 | -2.68E-07 | 3.70E-09 | -5.84E-11 |
| 6 | -1.77E-04 | 2.52E-06 | 8.57E-08 | -7.97E-09 | 8.01E-11 |
| 11 | -1.09E-06 | -4.92E-05 | 1.98E-06 | -1.20E-07 | 2.78E-09 |
| 12 | -2.18E-03 | -3.23E-06 | 4.35E-06 | -1.90E-07 | 3.73E-09 |
| 13 | 2.51E-03 | -1.87E-04 | 6.31E-06 | -7.02E-08 | 1.37E-09 |
| 14 | 5.99E-03 | -2.55E-04 | 1.36E-05 | -7.91E-07 | 2.17E-08 |
| 15 | 3.89E-04 | 5.42E-06 | -5.28E-06 | 4.53E-07 | -1.36E-08 |
| 16 | -1.13E-03 | 8.51E-05 | -9.52E-06 | 5.48E-07 | -1.33E-08 |
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (5)
1. A high-resolution large target surface 4-10mm day and night zooming monitoring lens is characterized in that: the lens comprises a front lens group with negative focal power, an aperture diaphragm, a rear lens group with positive focal power and an optical filter which are sequentially arranged along the incident direction of light rays; the front lens group comprises a meniscus glass lens A-1 with negative focal power, a biconcave aspheric plastic lens A-2 with negative focal power and an aspheric plastic lens A-3 with positive focal power which are arranged in sequence; the rear lens group comprises a bonding group consisting of a biconvex glass lens B-1 with positive focal power and a falcate glass lens B-2 with positive focal power, a biconvex aspheric plastic lens B-3 with positive focal power, a biconcave aspheric plastic lens B-4 with negative focal power and a falcate aspheric plastic lens B-5 with positive focal power which are arranged in sequence.
2. The large high-resolution target surface 4-10mm day and night zoom monitoring lens according to claim 1, characterized in that: the interval between the front lens group and the aperture stop is D1, the interval between the rear lens group and the aperture stop is D2, and the interval between D1 and D2 satisfies 1.5< D1<11, and 0.1< D2< 6.
3. The large high-resolution target surface 4-10mm day and night zoom monitoring lens according to claim 1, characterized in that: the refractive indexes (n1-n8) of the 8 lenses in sequence along the incident direction of light rays satisfy the following relational expressions that n1 is more than or equal to 1.4 and less than or equal to 1.8, n2 is more than or equal to 1.5 and less than or equal to 1.7, n3 is more than or equal to 1.5 and less than or equal to 1.7, n4 is more than or equal to 1.4 and less than or equal to 1.75, n5 is more than or equal to 1.8, n6 is more than or equal to 1.5 and less than or equal to 1.7, n7 is more than or equal to 1.32 and less than or equal to 1.5 and less than or equal to n8 and less than or equal to 1.7.
4. The large high-resolution target surface 4-10mm day and night zoom monitoring lens according to claim 1, characterized in that: the lens focal lengths (f1-f8) of the 8 lenses in sequence along the incident direction of the light ray satisfy the following relational expression: f1 is more than or equal to 26.3 and less than or equal to-6.9, f2 is more than or equal to 26.8 and less than or equal to-5, f3 is more than or equal to 10 and less than or equal to 50.4, f4 is more than or equal to 5.3 and less than or equal to 40.3, f5 is more than or equal to 20 and less than or equal to 60, f6 is more than or equal to 6.4 and less than or equal to 20.3, f7 is more than or equal to 35.7 and less than or equal to-2.8, and f8 is more than or equal to 4.6 and less than or equal to 20.3.
5. The large high-resolution target surface 4-10mm day and night zoom monitoring lens according to claim 1, characterized in that: the curvature radius R values (R1-R16) of the 8 lenses along the incident direction of the light ray satisfy the following relational expression: r1 is more than or equal to 50mm and less than or equal to 100mm, R2 is more than or equal to 4mm and less than or equal to 10mm, R3 is more than or equal to 30mm and less than or equal to 30mm, R5 is more than or equal to 5mm and less than or equal to 20mm, R6 is more than or equal to 150mm and more than or equal to 30mm, R8 is more than or equal to 4mm and less than or equal to 10mm, R9 is more than or equal to 10mm and less than or equal to-4 mm, R10 is more than or equal to-4 mm and less than or equal to 5mm and less than or equal to 20mm, R12 is more than or equal to-4 mm and less than or equal to-15 mm and less than or equal to 3mm, R14 is more than or equal to 5mm and less than or equal to 30mm, R15 is more than or equal to 4mm and less than or equal to 20mm, and less than or equal to 5mm and less than or equal to 30mm 16.
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| CN112346230A (en) * | 2020-11-30 | 2021-02-09 | 深圳融合光学科技有限公司 | High-resolution large-target-surface 4-10mm day and night zooming monitoring lens and imaging method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112346230A (en) * | 2020-11-30 | 2021-02-09 | 深圳融合光学科技有限公司 | High-resolution large-target-surface 4-10mm day and night zooming monitoring lens and imaging method |
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Effective date of registration: 20231010 Address after: 350301 Optoelectronic Technology Park, Rongqiao Economic and Technological Development Zone, Fuqing City, Fuzhou City, Fujian Province Patentee after: FUJIAN FUGUANG TIANTONG OPTICS Co.,Ltd. Address before: 6 / F, Juyou Business Center (Phoenix building), No.15, Keji North 1st Road, songpingshan community, Xili street, Nanshan District, Shenzhen, Guangdong 518000 Patentee before: Shenzhen fusion Optical Technology Co.,Ltd. |