CN103323935A - Large-zoom camera lens capable of being used in the day and at night - Google Patents
Large-zoom camera lens capable of being used in the day and at night Download PDFInfo
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- CN103323935A CN103323935A CN2013102617374A CN201310261737A CN103323935A CN 103323935 A CN103323935 A CN 103323935A CN 2013102617374 A CN2013102617374 A CN 2013102617374A CN 201310261737 A CN201310261737 A CN 201310261737A CN 103323935 A CN103323935 A CN 103323935A
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Abstract
The invention discloses a large-zoom camera lens capable of being used both in the day and at night. The large-zoom camera lens comprises a front fixed set, a zoom set, a rear fixed set and a compensation set, wherein the overall focal power of the front fixed set is positive, the overall focal power of the zoom set is negative, the overall focal power of the rear fixed set is positive, and the overall focal power of the compensation set is positive. The front fixed set comprises a first lens with convex-concave negative focal power, a second lens with convex-concave positive focal power and a third lens with convex-concave negative focal power. The zoom set comprises a fourth lens with concavo-concave negative focal power, a fifth lens with concavo-concave negative focal power and a sixth lens with convex-concave positive focal power. The rear fixed set comprises a seventh lens with convexo-convex positive focal power, an eighth lens with concave-convex negative focal power, a ninth lens with convex-concave positive focal power and a tenth lens with concavo-concave negative focal power. The compensation set comprises an eleventh lens with convexo-convex positive focal power, a twelfth lens with concave-convex negative focal power and a thirteenth lens with convexo-convex positive focal power. According to the large-zoom camera lens capable of being used in the day and at night, at least one lens is an ultralow dispersing lens, and at least two lenses are directly glued. The large-zoom camera lens is compact in structure, clear in image formation and capable of being used both in the day and at night.
Description
Technical field
The present invention relates to field of optical lens, refer to especially a kind of large zoom day and night lens.
Background technology
Along with the fast development of security protection industry, increasing occasion need to be used the camera lens of large zoom to satisfy closely and at a distance monitoring.Traditional large zoom lens is by a plurality of lens combination, and more eyeglass quantity and long optical length are realized.The focal power that as a rule need to reduce the zoom group for the volume that reduces zoom lens shortens stroke, is the larger aberration corrected of more being difficult to and little focal power is brought, and this is so that image quality is unstable, picture element descends.This is a large difficult point of design how to realize reaching higher image quality at less volume.Existing large zoom lens all is 5 constituent elements designs usually, and for example US Patent No. 6061186 has been showed just a kind ofly, and negative, just, just, the whole camera lens of 5 component zooming camera lenses of negative power comprises 17-19 optical lens; In order to reduce the camera lens volume and to promote image quality, introducing non-spherical lens is more effective solution, for example the patent No. is that the Chinese patent of CN200510078499.9 has been showed just a kind of, negative, just, just, the zoom lens of positive 5 constituent elements is comprising 12 optical lenses, wherein comprises at least 2 non-spherical lenses.Because known large zoom lens all is the optical mirror slips of 5 Component Structures more than 16 pieces, this camera lens volume is large, weight is large, or reduce eyeglass quantity by introducing more non-spherical lens, reduce the camera lens volume, but aspheric introducing so that the manufacture difficulty of eyeglass and cost sharply increase.These volumes that all can not fundamentally solve at present large zoom lens existence are large, processing and manufacturing difficulty, high in cost of production problem.In addition, the monitoring at night is also more and more important, common monitoring camera is mainly for visible light condition design on daytime, can only under the visible light condition, monitor, yet the monitoring occasion that is having, can only be equipped with the sightless infrared light of human eye evening, because infrared light is different from visible light wavelength, and common camera lens is not considered infrared light in design, the image planes position of their imagings can be offset, infrared out of focus appears, the phenomenon that shows be exactly under the infrared light condition image blur, image quality poor.
Summary of the invention
The large zoom day and night lens that the purpose of this invention is to provide a kind of compact conformation, imaging clearly.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of large zoom day and night lens, comprise that total focal power is that positive front fixedly group, total focal power are that positive rear fixedly group and total focal power is positive compensation group for negative zoom group, total focal power, carry out zoom by the relative position that changes zoom group and compensation group, described front fixedly group comprises the first lens from the tactic convex-concave negative power of object space one side, the second lens of convex-concave positive light coke, the 3rd lens of convex-concave negative power; Described zoom group comprises from the 5th lens of the 4th lens of the tactic concave-concave negative power of object space one side, concave-concave negative power, the 6th lens of convex-concave positive light coke; Described rear fixedly group comprises the 8th lens from the 7th lens of the tactic biconvex positive light coke of object space one side, concavo-convex negative power, the 9th lens of convex-concave positive light coke, the tenth lens of concave-concave negative power; Described compensation group comprises from the 11 lens of the tactic biconvex positive light coke of object space one side, the 12 lens of concavo-convex negative power, the 13 lens of biconvex positive light coke; In 13 lens of this camera lens, having a slice lens at least is the Extra-low Dispersion lens, and to have two lens at least are direct gummeds; The focal length of 13 lens of this camera lens, refractive index reach, and the radius-of-curvature of totally two ten six curved surfaces meets the following conditions respectively:
| -86.13≤f1≤-87.51 | 1.71≤n1≤1.78 | 56.543≤R1≤58.914 | 27.12≤R2≤28.31 |
| 66.42≤f2≤68.35 | 1.47≤n2≤1.52 | 27.12≤R3≤28.31 | 1750≤R4≤2370 |
| -42.23≤f3≤-43.62 | 1.65≤n3≤1.71 | 27.865≤R5≤29.32 | 122≤R6≤132 |
| -10.15≤f4≤-11.27 | 1.71≤n4≤1.78 | -100.23≤R7≤-119.4 | 7.96≤R8≤8.33 |
| -16.85≤f5≤-18.93 | 1.45≤n5≤1.55 | -19.58≤R9≤-21.96 | 9.73≤R10≤10.36 |
| 18.16≤f6≤19.98 | 1.8≤n6≤1.85 | 9.73≤R11≤10.36 | 42.16≤R12≤47.31 |
| 9.159≤f7≤10.35 | 1.45≤n7≤1.51 | 10.1≤R13≤11.96 | -6.19≤R14≤-10.85 |
| -19.147≤f8≤-21.67 | 1.45≤n8≤1.53 | -6.19≤R15≤-10.85 | -34.96≤R16≤-38.49 |
| 16.17≤f9≤17.69 | 1.71≤n9≤1.78 | 11.29≤R17≤12.11 | -39.95≤R18≤-288.66 |
| -8.53≤f10≤-9.81 | 1.61≤n10≤1.69 | -15.22≤R19≤-17.56 | 7.55≤R20≤8.13 |
| 9.192≤f11≤10.87 | 1.65≤n11≤1.73 | 26.58≤R21≤31.869 | -7.71≤R22≤-8.19 |
| -11.237≤f12≤-12.435 | 1.79≤n12≤1.86 | -7.71≤R23≤-8.19 | -91≤R24≤-113.35 |
| 14.218≤f13≤15.369 | 1.65≤n13≤1.76 | 14.35≤R25≤19.33 | -22.56≤R26≤-30.31 |
In the upper table, " f " is focal length, and " n " is refractive index, and " R " is radius-of-curvature, and "-" number expression direction is for negative.
A kind of preferred version, the first lens of described front fixedly group and the second lens directly glue together.
A kind of preferred version, the 5th lens and the 6th lens of described zoom group directly glue together.
A kind of preferred version, the 7th lens and the 8th lens of described rear fixedly group directly glue together.
A kind of preferred version, the 11 lens and the 12 lens of described compensation group directly glue together.
Further, the focal length zoom ratio scope of described camera lens is 5-20 times.
A kind of large zoom day and night lens of the present invention by the total focal power of optical texture adoption of innovation be followed successively by positive and negative, just, positive four Component Structures, focal power by each eyeglass of reasonable distribution, so that the comparatively responsive lens of tolerance are concentrated on rear fixedly group, so only need the manufacturing build-up tolerance of the rear fixing group of control just can reach the stable of whole picture element, and higher yields, greatly reduce cost; Under the prerequisite that does not adopt aspherical lens, the densification miniaturization of large zoom lens volume can be realized, and so that image quality is comparatively good, the demand of high-definition monitoring can be satisfied, cost is lower, and market outlook are extensive.Namely eliminated infrared out of focus by using Extra-low Dispersion lens reasonable distribution focal power to realize that full focal length section overlaps with the near-infrared band focal length at visible light wave range, realize-20 ℃-80 ℃ out of focus not by rational selection other lenses and Extra-low Dispersion lens combination, possess day and night with burnt function, namely can also become sharply defined image to infrared light in the situation that visible light becomes sharply defined image to need not focusing.
Description of drawings
Fig. 1 is the assembly drawing of each lens of large zoom day and night lens of the present invention.
Fig. 2 is the optical system diagram of the large zoom day and night lens of Fig. 1.
The spherical aberration performance diagram of camera lens when field angle is 66 ° that Fig. 3 provides for the first embodiment.
The aberration performance diagram of camera lens when field angle is 66 ° that Fig. 4 provides for the first embodiment.
The curvature of field performance diagram of camera lens when field angle is 66 ° that Fig. 5 provides for the first embodiment.
The spherical aberration performance diagram of camera lens when field angle is 8 ° that Fig. 6 provides for the first embodiment.
The aberration performance diagram of camera lens when field angle is 8 ° that Fig. 7 provides for the first embodiment.
The curvature of field performance diagram of camera lens when field angle is 8 ° that Fig. 8 provides for the first embodiment.
The spherical aberration performance diagram of camera lens when field angle is 64.6 ° that Fig. 9 provides for the second embodiment.
The aberration performance diagram of camera lens when field angle is 64.6 ° that Figure 10 provides for the second embodiment.
The curvature of field performance diagram of camera lens when field angle is 64.6 ° that Figure 11 provides for the second embodiment.
The spherical aberration performance diagram of camera lens when field angle is 8 ° that Figure 12 provides for the second embodiment.
The aberration performance diagram of camera lens when field angle is 8 ° that Figure 13 provides for the second embodiment.
The curvature of field performance diagram of camera lens when field angle is 8 ° that Figure 14 provides for the second embodiment.
Embodiment
For technical scheme of the present invention can more clearly be showed, the invention will be further described below in conjunction with accompanying drawing.
With reference to a kind of large zoom day and night lens illustrated in figures 1 and 2, comprise front fixedly group, zoom group, rear fixedly group and compensation group, by the focal length zoom ratio that the relative position that changes zoom group and compensation group is regulated whole camera lens, focal length zoom ratio scope is 5-20 times.
Described front fixedly group comprises first lens L1, the second lens L2 of convex-concave positive light coke, the 3rd lens L3 of convex-concave negative power from the tactic convex-concave negative power of object space one side, first lens L1 and the second lens L2 directly glue together, the 3rd lens L3 and the second lens L2 by spacer ring near assembling.
Described zoom group comprises from the 5th lens L5 of the 4th lens L4 of the tactic concave-concave negative power of object space one side, concave-concave negative power, the 6th lens L6 of convex-concave positive light coke, the 5th lens L5 and the 6th lens L6 directly glue together, and the 4th lens L4 and the 5th lens L5 are directly near assembling.
Described rear fixedly group comprises from the 9th lens L9 of the 8th lens L8 of the 7th lens L7 of the tactic biconvex positive light coke of object space one side, concavo-convex negative power, convex-concave positive light coke, the tenth lens L10 of concave-concave negative power, the 7th lens L7 and the 8th lens L8 directly glue together, the 9th lens L9 and the 8th lens L8 by spacer ring near assembling, and between the 9th lens L9 and described the tenth lens L10 also by spacer ring near assembling.
Described compensation group comprises from the 11 lens L11 of the tactic biconvex positive light coke of object space one side, the 12 lens L12 of concavo-convex negative power, the 13 lens L13 of biconvex positive light coke, the 11 lens L11 and the 12 lens L12 directly glue together, the 13 lens L13 and the 12 lens L12 by spacer ring near assembling.
Embodiment one:
When 13 lens of this camera lens when radius-of-curvature, lens thickness, eyeglass spacing and the eyeglass refractive index of totally two ten six faces meet the following conditions respectively:
| The face sequence number | | D | n | |
| 1 | 56.543 | 0.841 | 1.75 | |
| 2 | 27.742 | 4.93 | 1.47 | |
| 3 | 2361.021 | 0.1 | ? | |
| 4 | 28.565 | 4.129 | 1.7 | |
| 5 | 130.941 | 1.27～25.29 is variable | ? | |
| 6 | -117.216 | 0.846 | 1.76 | |
| 7 | 8.113 | 3.513 | ? | |
| 8 | -21.355 | 0.843 | 1.49 | |
| 9 | 9.919 | 3.248 | 1.81 | |
| 10 | 42.381 | 26.8～2.785 is variable | ? | |
| Diaphragm | PL | 0.55 | ? | |
| 12 | 10.103 | 4.672 | 1.5 | |
| 13 | -7 | 0.766 | 1.49 | |
| 14 | -35.351 | 0.1 | ? | |
| 15 | 11.512 | 2.959 | 1.75 | |
| 16 | -255.696 | 0.721 | ? | |
| 17 | -15.375 | 0.845 | 1.61 | |
| 18 | 7.852 | 5.796～4.147 is variable | ? | |
| 19 | 29.162 | 3.095 | 1.69 | |
| 20 | -7.781 | 0.752 | 1.85 | |
| 21 | -91 | 0.112 | ? | |
| 22 | 18.354 | 2.58 | 1.65 | |
| 23 | -22.854 | ? | ? |
In the upper table, " n " is refractive index, and " R " is radius-of-curvature, and "-" number expression direction is for negative, and " PL " represents the plane; The cemented surface of two lens gummeds is designated as a face, the existing refractive index data n of upper table the same face sequence number and data D's, data D represents the thickness at this lens axial line place, and the same face sequence number only has data D and do not have refractive index data n, data D to represent that this lens face is to the spacing of next lens face.
Spherical aberration, aberration and curvature of field family curve that Fig. 3 to Fig. 5 records respectively when field angle is 66 ° for this large zoom day and night lens, as can be seen from the figure, spherical aberration is controlled in the positive and negative 0.1mm, and Difference Control is in positive and negative 2 μ m, and the curvature of field is controlled in the positive and negative 0.1mm; And spherical aberration, aberration and curvature of field family curve that Fig. 6 to Fig. 8 records respectively when field angle is 8 ° for this large zoom day and night lens, as can be seen from the figure, spherical aberration is controlled in the positive and negative 0.1mm, and Difference Control is in positive and negative 5 μ m, and the curvature of field is controlled in the positive and negative 0.2mm; This shows, spherical aberration, aberration and the curvature of field of the large zoom day and night lens that first embodiment of the invention provides can both be controlled in the less scope.
Embodiment two:
When the refractive index of 13 lens of this camera lens and when the radius-of-curvature of totally two ten six curved surfaces meets the following conditions respectively:
| The face sequence number | | D | n | |
| 1 | 58.914 | 1.217 | 1.71 | |
| 2 | 27.551 | 5.166 | 1.52 | |
| 3 | 1763.646 | 0.1 | ? | |
| 4 | 28.675 | 3.94 | 1.69 | |
| 5 | 123.398 | 1.27～25.29 is variable | ? | |
| 6 | -101.099 | 0.846 | 1.76 | |
| 7 | 8.183 | 3.466 | ? | |
| 8 | -19.677 | 0.886 | 1.49 | |
| 9 | 10.065 | 3.091 | 1.84 | |
| 10 | 45.305 | 26.8～2.785 is variable | ? | |
| Diaphragm | PL | 0.3 | ? | |
| 12 | 11.461 | 4.588 | 1.49 | |
| 13 | -10.841 | 0.811 | 1.51 | |
| 14 | -38.46 | 0.114 | ? | |
| 15 | 11.421 | 2.675 | 1.74 | |
| 16 | -40.01 | 0.569 | ? | |
| 17 | -15.85 | 0.716 | 1.63 | |
| 18 | 7.859 | 5.796～4.147 is variable | ? | |
| 19 | 31.52 | 3.136 | 1.69 | |
| 20 | -7.841 | 0.799 | 1.86 | |
| 21 | -100.539 | 0.127 | ? | |
| 22 | 19.059 | 2.835 | 1.68 | |
| 23 | -23.31 | ? | ? |
In the upper table, " n " is refractive index, and " R " is radius-of-curvature, and "-" number expression direction is for negative, and " PL " represents the plane; The cemented surface of two lens gummeds is designated as a face, the existing refractive index data n of upper table the same face sequence number and data D's, data D represents the thickness at this lens axial line place, and the same face sequence number only has data D and do not have refractive index data n, data D to represent that this lens face is to the spacing of next lens face.
Spherical aberration, aberration and curvature of field family curve that Fig. 9 to Figure 11 records respectively when field angle is 64.6 ° for this large zoom day and night lens, as can be seen from the figure, spherical aberration is controlled in the positive and negative 0.2mm, Difference Control is in positive and negative 1 μ m, and the curvature of field is controlled in the positive and negative 0.1mm; And spherical aberration, aberration and curvature of field family curve that Figure 12 to Figure 14 records respectively when field angle is 8 ° for this large zoom day and night lens, as can be seen from the figure, spherical aberration is controlled in the positive and negative 0.2mm, Difference Control is in positive and negative 2 μ m, and the curvature of field is controlled in the positive and negative 0.2mm; This shows, spherical aberration, aberration and the curvature of field of the large zoom day and night lens that second embodiment of the invention provides can both be controlled in the less scope.
Above embodiment just is explanation rather than restriction the present invention, therefore all equivalences of doing according to the described method of patent claim of the present invention change or modify, is included in the patent claim of the present invention.
Claims (6)
1. large zoom day and night lens, it is characterized in that: comprise that total focal power is that positive front fixedly group, total focal power are that positive rear fixedly group and total focal power is positive compensation group for negative zoom group, total focal power, carry out zoom by the relative position that changes zoom group and compensation group, described front fixedly group comprises the first lens from the tactic convex-concave negative power of object space one side, the second lens of convex-concave positive light coke, the 3rd lens of convex-concave negative power; Described zoom group comprises from the 5th lens of the 4th lens of the tactic concave-concave negative power of object space one side, concave-concave negative power, the 6th lens of convex-concave positive light coke; Described rear fixedly group comprises the 8th lens from the 7th lens of the tactic biconvex positive light coke of object space one side, concavo-convex negative power, the 9th lens of convex-concave positive light coke, the tenth lens of concave-concave negative power; Described compensation group comprises from the 11 lens of the tactic biconvex positive light coke of object space one side, the 12 lens of concavo-convex negative power, the 13 lens of biconvex positive light coke; In 13 lens of this camera lens, having a slice lens at least is the Extra-low Dispersion lens, and to have two lens at least are direct gummeds; The focal length of 13 lens of this camera lens, refractive index reach, and the radius-of-curvature of totally two ten six curved surfaces meets the following conditions respectively:
In the upper table, " f " is focal length, and " n " is refractive index, and " R " is radius-of-curvature, and "-" number expression direction is for negative.
2. a kind of large zoom day and night lens according to claim 1, it is characterized in that: the first lens of described front fixedly group and the second lens directly glue together.
3. a kind of large zoom day and night lens according to claim 1, it is characterized in that: the 5th lens and the 6th lens of described zoom group directly glue together.
4. a kind of large zoom day and night lens according to claim 1, it is characterized in that: the 7th lens and the 8th lens of described rear fixedly group directly glue together.
5. a kind of large zoom day and night lens according to claim 1, it is characterized in that: the 11 lens and the 12 lens of described compensation group directly glue together.
6. a kind of large zoom day and night lens according to claim 1 is characterized in that: the focal length zoom ratio scope of described camera lens be 5-20 doubly.
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| CN109116529A (en) * | 2018-08-22 | 2019-01-01 | 哈尔滨新光光电科技有限公司 | A kind of high-resolution microminiature visible light varifocal optical system |
| CN109884779A (en) * | 2019-03-15 | 2019-06-14 | 广东奥普特科技股份有限公司 | A kind of low distortion camera lens |
| CN110543004A (en) * | 2019-08-27 | 2019-12-06 | 杭州图谱光电科技有限公司 | Digital microscope objective with high magnification and large zoom ratio |
| CN113341550A (en) * | 2021-07-29 | 2021-09-03 | 成都极米科技股份有限公司 | Zoom lens applied to projection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106094181A (en) * | 2016-07-28 | 2016-11-09 | 东莞市奥普特自动化科技有限公司 | 3X zoom machine visual lens |
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| CN107957622A (en) * | 2018-01-04 | 2018-04-24 | 东莞市宇瞳光学科技股份有限公司 | A kind of focal length zoom lens of the big image planes of large aperture |
| CN107957622B (en) * | 2018-01-04 | 2023-12-12 | 东莞市宇瞳光学科技股份有限公司 | Large aperture and large image plane tele zoom lens |
| CN109116529A (en) * | 2018-08-22 | 2019-01-01 | 哈尔滨新光光电科技有限公司 | A kind of high-resolution microminiature visible light varifocal optical system |
| CN109116529B (en) * | 2018-08-22 | 2019-07-23 | 哈尔滨新光光电科技有限公司 | A kind of high-resolution microminiature visible light varifocal optical system |
| CN109884779A (en) * | 2019-03-15 | 2019-06-14 | 广东奥普特科技股份有限公司 | A kind of low distortion camera lens |
| CN109884779B (en) * | 2019-03-15 | 2023-10-27 | 广东奥普特科技股份有限公司 | Low-distortion lens |
| CN110543004A (en) * | 2019-08-27 | 2019-12-06 | 杭州图谱光电科技有限公司 | Digital microscope objective with high magnification and large zoom ratio |
| CN113341550A (en) * | 2021-07-29 | 2021-09-03 | 成都极米科技股份有限公司 | Zoom lens applied to projection |
| CN113341550B (en) * | 2021-07-29 | 2021-11-09 | 成都极米科技股份有限公司 | Zoom lens applied to projection |
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