CN114355595B - Super-clean large-area array day and night dual-purpose zoom lens - Google Patents
Super-clean large-area array day and night dual-purpose zoom lens Download PDFInfo
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- CN114355595B CN114355595B CN202111655681.1A CN202111655681A CN114355595B CN 114355595 B CN114355595 B CN 114355595B CN 202111655681 A CN202111655681 A CN 202111655681A CN 114355595 B CN114355595 B CN 114355595B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/145—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having five groups only
- G02B15/1451—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having five groups only the first group being positive
- G02B15/145129—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having five groups only the first group being positive arranged +-+++
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/15—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective compensation by means of only one movement or by means of only linearly related movements, e.g. optical compensation
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Abstract
The invention relates to a super-clear large-area array day and night dual-purpose zoom lens which comprises a front fixed group, a zoom group, an iris diaphragm, a middle fixed group, a compensation group and a rear fixed group, wherein the front fixed group, the zoom group, the iris diaphragm, the middle fixed group, the compensation group and the rear fixed group are arranged along the incident direction of light rays, and the front fixed group comprises a meniscus negative lens A1, a biconvex positive lens A2 and a meniscus positive lens A3; the variable power group comprises a double concave negative lens B1, a double concave negative lens B2, a double concave negative lens B3 and a double convex positive lens B4; the middle fixed group D comprises a biconvex positive lens D1, a meniscus positive lens D2, a biconcave negative lens D3, a biconcave negative lens D4 and a biconvex positive lens D5; the compensation group comprises a biconvex positive lens E1 and a biconvex positive lens E2; the rear fixed group comprises a double concave negative lens F1, a meniscus negative lens F2, a meniscus positive lens F3 and a double convex positive lens F4. The lens adopts a five-group zooming structural form, can fully balance various aberrations of the large-aperture large-image-plane lens, reduces the sensitivity of the lens through reasonable material selection and focal power proportion, improves the imaging quality of the lens, and enables the lens to have productivity.
Description
The technical field is as follows:
the invention relates to a super-definition large-area array day and night zoom lens.
Background art:
in recent years, with the development of road traffic planning, more and more road monitoring lenses are applied to the intelligent traffic industry, and the information collected by the road monitoring lenses is combined with big data and an artificial intelligence technology, so that the road traffic information can be captured in the first time, the road traffic condition is improved, a series of traffic safety problems are solved, and the construction of a smart city is effectively promoted.
The road monitoring lens is used as a core component of a road monitoring network, and as eyes of the whole urban traffic monitoring network, the road monitoring lens must have high restoring force and various anti-interference performance on monitored regional images. At present, lenses for monitoring smart city roads in the market are mainly fixed-focus lenses with large apertures, and the lenses usually do not have the function of zooming monitoring pictures with different views in order to improve the aberration of the large apertures and achieve higher resolution under a certain specific view field. For example, an intelligent traffic lens disclosed in patent CN201721291717.1 cannot realize the zoom function, and does not have the performance of nighttime non-complementary light imaging. Some road monitoring lenses in the market are zoom lenses with large apertures, but the lenses can only be matched with chips with the size of less than 1/1.8 ″, are small in photosensitive image surface area and low in resolution, do not have the performance of being used for day and night, and some zoom lenses supporting imaging with extremely high resolution do not have the capability of large aperture low-light imaging.
The invention content is as follows:
the invention is to provide an ultra-clear large-area array zoom lens for day and night.
In order to achieve the purpose, the invention adopts the technical scheme that: a super-clear large-area array day and night dual-purpose zoom lens comprises a front fixed group A with positive focal power, a zoom group B with negative focal power, an iris diaphragm C, a middle fixed group D with positive focal power, a compensation group E with positive focal power and a rear fixed group F with positive focal power, which are sequentially arranged along the incident direction of light rays from left to right, wherein the front fixed group A comprises a negative meniscus lens A1, a double convex positive lens A2 and a positive meniscus lens A3 which are sequentially arranged; the zoom group B comprises a double-concave negative lens B1, a double-concave negative lens B2, a double-concave negative lens B3 and a double-convex positive lens B4 which are arranged in sequence; the middle fixed group D comprises a biconvex positive lens D1, a meniscus positive lens D2, a biconcave negative lens D3, a biconcave negative lens D4 and a biconvex positive lens D5 which are arranged in sequence; the compensation group E comprises a biconvex positive lens E1 and a biconvex positive lens E2 which are arranged in sequence; the rear fixed group F comprises a biconcave negative lens F1, a meniscus negative lens F2, a meniscus positive lens F3 and a biconvex positive lens F4 which are sequentially arranged.
Further, the meniscus negative lens A1 and the biconvex positive lens A2 are tightly connected to form a first adhesive sheet, and the adhesive surface of the first adhesive sheet is bent to the variable diaphragm C side; the biconcave negative lens B3 and the biconvex positive lens B4 are connected to form a second adhesive sheet, and the adhesive surface of the second adhesive sheet is bent to the side of the iris diaphragm C; the biconcave negative lens D4 and the biconvex positive lens D5 are tightly connected to form a third adhesive sheet, and the adhesive surface of the third adhesive sheet faces back to the variable diaphragm C side; and the meniscus negative lens F2 and the meniscus positive lens F3 are tightly connected to form a fourth adhesive sheet, and the adhesive surface of the fourth adhesive sheet is back to the variable diaphragm C side.
Further, the air space between the double convex positive lens A2 and the meniscus positive lens A3 is 0.1mm; the air distance from the double-concave negative lens B1 to the double-concave negative lens B2 is 5.63mm, and the air distance from the double-concave negative lens B2 to the double-concave negative lens B3 is 1.87mm; the air distance from the biconvex positive lens D1 to the meniscus positive lens D2 is 0.1mm, the air distance from the meniscus positive lens D2 to the biconcave negative lens D3 is 0.63mm, and the air distance from the biconcave negative lens D3 to the biconcave negative lens D4 is 3.18mm; the air distance from the biconvex positive lens E1 to the biconvex positive lens E2 is 0.1mm; the air distance from the biconcave negative lens F1 to the meniscus negative lens F2 is 1.4mm, the air distance from the meniscus positive lens F3 to the biconvex positive lens F4 is 8.96mm, and the distance from the biconvex positive lens F4 to the image plane is 10.5mm.
Further, the air distance from the front fixed group A to the variable magnification group B is 1.51-21.63 mm; the air distance from the variable magnification group B to the variable diaphragm C is 1.18 mm-21.3 mm; the air distance from the middle fixed group D to the compensation group E is 0.1 mm-2.15 mm; the air distance from the compensation group E to the rear fixed group F is 0.1 mm-2.15 mm.
Furthermore, in the first adhesive sheet, the third adhesive sheet and the fourth adhesive sheet, the refractive index difference of the adhesive sheets is greater than 0.15.
Further, a focal length of a short focal end of the zoom lens is fw, a focal length of a long focal end of the zoom lens is ft, a focal length of a front fixed group of the zoom lens is fa, a focal length of a zoom group of the zoom lens is fb, a focal length of a middle fixed group of the zoom lens is fd, a focal length of a compensation group of the zoom lens is fe, and a focal length of a rear fixed group of the zoom lens is ff, and the following relationships are satisfied:
3.5<∣fa/fw∣<6.5；1.5<∣fa/ft∣<2.5；
1.1<∣fb/fw∣<1.8；0.3<∣fb/ft∣<0.5；
7.5<∣fd/fw∣<9.5；2.5<∣fd/ft∣<3.5；
1.1<∣fe/fw∣<2.1；0.4<∣fe/ft∣<0.6；
3.5<∣ff/fw∣<4.5；1.1<∣ff/ft∣<1.8。
compared with the prior art, the invention has the following effects: the invention has reasonable design, has large light flux and large imaging area, can be matched with a large-size camera to carry out clear imaging in a low-light environment, and can also support high-definition imaging in the day and at night.
Description of the drawings:
FIG. 1 is a schematic diagram of the optical configuration of a short focal end in an embodiment of the present invention;
FIG. 2 is a schematic diagram of an optical configuration of a tele end in an embodiment of the present invention;
FIG. 3 is a diagram illustrating an optical transfer function under visible light at a short focal end in an embodiment of the present invention;
FIG. 4 is a diagram illustrating an optical transfer function under visible light at a tele end in an embodiment of the present invention;
FIG. 5 is a graph of the optical transfer function for tele-end night vision in an embodiment of the invention.
In the figure:
a-anterior fixation group A; b-zoom group B; c-iris diaphragm C; d-middle fixed group D; e-compensation group E; f-post-fixation group F; a1-a meniscus negative lens A1; a2 — biconvex positive lens A2; a3-meniscus positive lens A3; b1-biconcave negative lens B1; b2-biconcave negative lens B2; b3-biconcave negative lens B3; b4-biconvex positive lens B4; d1-biconvex positive lens D1; d2-meniscus positive lens D2; d3-biconcave negative lens D3; d4-double concave negative lens D4; d5-biconvex positive lens D5; e1-biconvex positive lens E1; e2-biconvex positive lens E2; f1-biconcave negative lens F1; f2-meniscus negative lens F2; f3-meniscus positive lens F3; f4-biconvex positive lens F4.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1 to 5, the present invention relates to a super-clear large-area array zoom lens for day and night use, which comprises a front fixed group a with positive focal power, a zoom group B with negative focal power, an iris diaphragm C, a middle fixed group D with positive focal power, a compensation group E with positive focal power, and a rear fixed group F with positive focal power, which are sequentially arranged along an incident direction from left to right, wherein the front fixed group a comprises a negative meniscus lens A1, a double convex positive lens A2, and a positive meniscus lens A3; the zoom group B comprises a double-concave negative lens B1, a double-concave negative lens B2, a double-concave negative lens B3 and a double-convex positive lens B4 which are arranged in sequence; the middle fixed group D comprises a biconvex positive lens D1, a meniscus positive lens D2, a biconcave negative lens D3, a biconcave negative lens D4 and a biconvex positive lens D5 which are arranged in sequence; the compensation group E comprises a biconvex positive lens E1 and a biconvex positive lens E2 which are arranged in sequence; the rear fixed group F comprises a biconcave negative lens F1, a meniscus negative lens F2, a meniscus positive lens F3 and a biconvex positive lens F4 which are sequentially arranged. The zoom lens adopts a scheme of three fixed groups, can realize the aberration correction of a large-aperture large-image-plane lens with certain volume limitation, and ensures the high-quality imaging performance of the zoom lens; can be adapted for 1 inch million pixels or higher camera usage.
In this embodiment, the meniscus negative lens A1 and the biconvex positive lens A2 are closely connected to form a first adhesive sheet, and an adhesive surface of the first adhesive sheet is bent toward the variable diaphragm C side; the biconcave negative lens B3 and the biconvex positive lens B4 are connected to form a second adhesive sheet, and the adhesive surface of the second adhesive sheet is bent to the side of the iris diaphragm C; the biconcave negative lens D4 and the biconvex positive lens D5 are tightly connected to form a third adhesive sheet, and the adhesive surface of the third adhesive sheet faces back to the variable diaphragm C side; and the meniscus negative lens F2 and the meniscus positive lens F3 are tightly connected to form a fourth adhesive sheet, and the adhesive surface of the fourth adhesive sheet is back to the variable diaphragm C side.
In this embodiment, the air distance from the biconvex positive lens A2 to the meniscus positive lens A3 is 0.1mm; the air distance from the double-concave negative lens B1 to the double-concave negative lens B2 is 5.63mm, and the air distance from the double-concave negative lens B2 to the double-concave negative lens B3 is 1.87mm; the air distance from the biconvex positive lens D1 to the meniscus positive lens D2 is 0.1mm, the air distance from the meniscus positive lens D2 to the biconcave negative lens D3 is 0.63mm, and the air distance from the biconcave negative lens D3 to the biconcave negative lens D4 is 3.18mm; the air distance from the biconvex positive lens E1 to the biconvex positive lens E2 is 0.1mm; the air distance from the biconcave negative lens F1 to the meniscus negative lens F2 is 1.4mm, the air distance from the meniscus positive lens F3 to the biconvex positive lens F4 is 8.96mm, and the distance from the biconvex positive lens F4 to the image plane is 10.5mm.
In the embodiment, the air distance from the front fixed group A to the zoom group B is 1.51-21.63 mm; the air distance from the zooming group B to the iris diaphragm C is 1.18-21.3 mm; the air distance from the middle fixed group D to the compensation group E is 0.1 mm-2.15 mm; the air distance from the compensation group E to the rear fixed group F is 0.1 mm-2.15 mm.
In this embodiment, the zoom group B and the compensation group E can both move left and right, the magnification adjustment is performed by the left and right movement of the zoom group B, the focus point position can be adjusted by the left and right movement of the compensation group E, and the refocusing of the focuses of the various fields under different magnifications is realized.
In this embodiment, a focal length of a short focal end of the zoom lens is fw, a focal length of a long focal end of the zoom lens is ft, a focal length of a front fixed group of the zoom lens is fa, a focal length of a zoom group of the zoom lens is fb, a focal length of a middle fixed group of the zoom lens is fd, a focal length of a compensation group of the zoom lens is fe, and a focal length of a rear fixed group of the zoom lens is ff, which satisfy the following relationships:
3.5<∣fa/fw∣<6.5；1.5<∣fa/ft∣<2.5；
1.1<∣fb/fw∣<1.8；0.3<∣fb/ft∣<0.5；
7.5<∣fd/fw∣<9.5；2.5<∣fd/ft∣<3.5；
1.1<∣fe/fw∣<2.1；0.4<∣fe/ft∣<0.6；
3.5<∣ff/fw∣<4.5；1.1<∣ff/ft∣<1.8。
in this embodiment, in the front fixed group a with positive focal power, a glue sheet (formed by tightly connecting the negative meniscus lens A1 and the double convex positive lens A2) with a large refractive index difference and a single positive low-refractive-index sheet (the positive meniscus lens A3) are combined, so that the focal power of the short focal end and the large field of view can be fully borne, and the chromatic aberration coefficient of the medium and long focal ends can be improved, which is the key point for realizing the ultra-clear technology.
In this embodiment, the front fixed group a with positive focal power, the middle fixed group D with positive focal power, and the rear fixed group E with positive focal power all adopt a combination of adhesive sheets with large abbe number differences, that is: in the first gluing sheet, the third gluing sheet and the fourth gluing sheet, the abbe numbers of the two lenses in each gluing sheet are different greatly. In the first gluing sheet, the third gluing sheet and the fourth gluing sheet, the difference between the refractive indexes of the two lenses in each gluing sheet is larger than 0.15, so that the axial chromatic aberration and the vertical chromatic aberration under different wavelengths can be fully corrected, the lens can realize infrared clear imaging at night, can be used in both day and night, improves the astigmatic coefficient through different bending directions of gluing surfaces, and ensures the consistency of the definition under different focal lengths.
In this embodiment, the use of the ultra-high refractive index material in the intermediate fixed group D with positive power can sufficiently correct the large aperture spherical aberration at different focal lengths.
In this embodiment, a large area camera is arranged at the image plane of the lens to perform signal conversion, so as to realize a monitoring function.
In this embodiment, two lenses made of high abbe material are selected from the front fixed group a, and one of the two lenses is tightly bonded with a lens made of high refractive index material, so that the secondary spectrum of the large aperture imaging system can be sufficiently corrected, and the imaging quality is improved.
In this embodiment, the middle fixed group D adopts a complicated positive and negative lens separation form, which can improve the initial order and the high-order spherical aberration of the system, and the cemented surface of the cemented sheet in the rear fixed group F faces away from the variable diaphragm C, which can weaken the off-axis curvature of field and astigmatism in the large image plane, and reasonably distribute the optical power to make the light with large image height have a gentle trend, reduce the aberration coefficient, and ensure the ultra-clear imaging level.
In this embodiment, a part of the negative film is made of a material with a negative temperature coefficient of refractive index, and the positive film is made of a material with a positive temperature coefficient of refractive index, so as to compensate the focus temperature drift caused by the high abbe material of the positive film, so that the lens is always at the balance point of low chromatic aberration and zero temperature drift.
In this embodiment, an iris diaphragm C is disposed between the variable magnification group B and the intermediate fixed group D, and the iris diaphragm can adjust the amount of light entering under different light intensity environments.
In this example, the parameters of each lens are shown in table 1 below.
| Number of noodles | Radius of curvature (mm) | Thickness interval (mm) | Nd | Vd |
| 1 | 83.2≤R≤85.1 | 2.2 | 1.85 | 24 |
| 2 | 51.0≤R≤52.2 | 10.3 | 1.59 | 69 |
| 3 | -2200≤R≤-2150 | 0.1 | ||
| 4 | 42.1≤R≤44.1 | 7.43 | 1.59 | 69 |
| 5 | 169.8≤R≤172.2 | 1.51-21.63 | ||
| 6 | -3902≤R≤-3870 | 1.5 | 1.90 | 31 |
| 7 | 15.4≤R≤15.9 | 5.63 | ||
| 8 | -47.2≤R≤-44.9 | 1 | 1.50 | 82 |
| 9 | 54.9≤R≤57.2 | 1.87 | ||
| 10 | -61.2≤R≤-64.4 | 1.51 | 1.50 | 82 |
| 11 | 23.5≤R≤25.1 | 9.14 | 1.90 | 31 |
| 12 | -191.2≤R≤-203.5 | 1.18-21.3 | ||
| 13 | Diaphragm | 0.1 | ||
| 14 | 48.5≤R≤49.8 | 2.74 | 2.10 | 17 |
| 15 | -74.5≤R≤-73.5 | 0.1 | ||
| 16 | 20.1≤R≤21.8 | 2.7 | 1.74 | 49 |
| 17 | 66.5≤R≤68.1 | 0.63 | ||
| 18 | -168.5≤R≤-178.2 | 1 | 1.74 | 28 |
| 19 | 14.5≤R≤15.9 | 3.18 | ||
| 20 | -18.4≤R≤-18.9 | 1 | 1.74 | 28 |
| 21 | 24.1≤R≤25.3 | 4.59 | 1.59 | 69 |
| 22 | -23.1≤R≤-21.5 | 0.1-2.15 | ||
| 23 | 37.8≤R≤39.5 | 3.3 | 1.66 | 57 |
| 24 | -65≤R≤-63.5 | 0.1 | ||
| 25 | 27.1≤R≤28.3 | 3.84 | 1.59 | 69 |
| 26 | -56.2≤R≤-54.8 | 0.1-2.15 | ||
| 27 | -170≤R≤-165.2 | 4.3 | 1.61 | 37 |
| 28 | 16.1≤R≤17.2 | 1.4 | ||
| 29 | 43.1≤R≤45.2 | 1 | 1.74 | 28 |
| 30 | 12.8≤R≤13.7 | 4.5 | 1.59 | 69 |
| 31 | 321.5≤R≤332.5 | 8.96 | ||
| 32 | 23.1≤R≤24.2 | 4.86 | 1.75 | 37 |
| 33 | -115≤R≤-105 | 10.5 |
By adopting the parameters of each lens in table 1, the zoom lens achieves the following optical parameter indexes:
focal length range: 12-36mm;
aperture: FNO =1.6;
designing a wavelength: visible light and near infrared light of 850nm;
TV distortion at the wide angle end is less than or equal to 3.5 percent;
the maximum design image surface reaches phi 16, and the method can be applied to camera chips with pixels of 1 inch and ten million or more.
In this embodiment, the negative meniscus lens A1 may be made of H-ZF52; the biconvex positive lens A2 can be made of FCD515; the material of the meniscus positive lens A3 can be FCD515; the double-concave negative lens B1 can be made of H-ZLAF75A; the biconcave negative lens B2 can be made of FCD1; the biconcave negative lens B3 can be made of FCD1; the biconvex positive lens B4 can be made of H-ZLAF75A; the biconvex positive lens D1 can be made of E-FDS3; the meniscus positive lens D2 can be made of H-LAF53; the double-concave negative lens D3 can be made of H-ZF50; the double-concave negative lens D4 can be made of H-ZF50; the biconvex positive lens D5 can be made of FCD515; the biconvex positive lens E1 can be made of H-LAK1; the biconvex positive lens E2 can be made of FCD515; the double-concave negative lens F1 can be made of H-F2; the meniscus negative lens F2 can be made of H-ZF50; the positive meniscus lens F3 can be made of FCD515; the biconvex positive lens F4 can be selected from H-LAFL5.
In this embodiment, fig. 3 is a diagram of an optical transfer function of the zoom lens at the short focal end under visible light, where the transfer function of the short focal end of the lens satisfies 200lp/mm ≥ 0.3; the system can be matched with a 1-inch million-pixel camera to realize ultra-clear imaging. FIG. 4 is a diagram of an optical transfer function under visible light at the telephoto end of the zoom lens, wherein the transfer function at the telephoto end of the zoom lens satisfies 200lp/mm ≥ 0.3; the system can be matched with a 1-inch million-pixel camera to realize ultra-clear imaging. FIG. 5 is a graph of the optical transfer function for tele-end night vision of the zoom lens, where the tele-end night vision transfer of the lens meets 150lp/mm ≧ 0.3; the lens can be brought to excellent night imaging capability. In conclusion, the lens adopts a five-group zooming structure, various aberrations of the large-aperture large-image-plane lens can be fully balanced, the sensitivity of the lens is reduced through reasonable material selection and focal power proportion, the imaging quality of the lens is improved, and the lens has productivity.
The invention has the advantages that:
1. the lens has large light flux and large imaging area, can be matched with a large-size camera to carry out clear imaging in a low-light environment, and can also support high-definition imaging in the day and at night;
2. the structure form of three fixed groups and five groups of zoom is selected, so that the off-field aberration caused by the large-area-array zoom lens when the size of the lens is compressed can be effectively improved;
3. high-Abbe materials are reasonably selected on the lens with positive focal power and the lens with negative focal power, so that the ultra-clear large-area-array day and night dual-purpose zoom lens can clearly image in different temperature environments while correcting chromatic aberration and is not influenced by the ambient temperature.
If the invention discloses or relates to parts or structures which are fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (5)
1. The utility model provides a big face array day dual-purpose zoom of super clear which characterized in that: the optical lens system comprises a front fixed group A with positive focal power, a zoom group B with negative focal power, an iris diaphragm C, a middle fixed group D with positive focal power, a compensation group E with positive focal power and a rear fixed group F with positive focal power, which are sequentially arranged along the incident direction of light rays from left to right, wherein the front fixed group A comprises a negative meniscus lens A1, a double-convex positive lens A2 and a positive meniscus lens A3 which are sequentially arranged; the zoom group B consists of a double-concave negative lens B1, a double-concave negative lens B2, a double-concave negative lens B3 and a double-convex positive lens B4 which are arranged in sequence; the middle fixed group D consists of a biconvex positive lens D1, a meniscus positive lens D2, a biconcave negative lens D3, a biconcave negative lens D4 and a biconvex positive lens D5 which are arranged in sequence; the compensation group E consists of a biconvex positive lens E1 and a biconvex positive lens E2 which are arranged in sequence; the rear fixed group F consists of a biconcave negative lens F1, a meniscus negative lens F2, a meniscus positive lens F3 and a biconvex positive lens F4 which are arranged in sequence; the focal length of the short focal end of the zoom lens is fw, the focal length of the long focal end of the zoom lens is ft, the focal length of the front fixed group of the zoom lens is fa, the focal length of the zoom lens is fb, the focal length of the middle fixed group of the zoom lens is fd, the focal length of the compensation group of the zoom lens is fe, the focal length of the rear fixed group of the zoom lens is ff, and the following relations are satisfied:
3.5<∣fa/fw∣<6.5；1.5<∣fa/ft∣<2.5；
1.1<∣fb/fw∣<1.8；0.3<∣fb/ft∣<0.5；
7.5<∣fd/fw∣<9.5；2.5<∣fd/ft∣<3.5；
1.1<∣fe/fw∣<2.1；0.4<∣fe/ft∣<0.6；
3.5<∣ff/fw∣<4.5；1.1<∣ff/ft∣<1.8。
2. the ultra-clear large-area-array zoom lens for day and night use according to claim 1, wherein: the meniscus negative lens A1 and the biconvex positive lens A2 are tightly connected to form a first adhesive sheet, and the adhesive surface of the first adhesive sheet is bent to the side of the variable diaphragm C; the biconcave negative lens B3 and the biconvex positive lens B4 are connected to form a second gluing sheet, and the gluing surface of the second gluing sheet bends to the side of the variable diaphragm C; the biconcave negative lens D4 and the biconvex positive lens D5 are tightly connected to form a third adhesive sheet, and the adhesive surface of the third adhesive sheet faces back to the variable diaphragm C side; and the meniscus negative lens F2 and the meniscus positive lens F3 are tightly connected to form a fourth adhesive sheet, and the adhesive surface of the fourth adhesive sheet is back to the variable diaphragm C side.
3. The ultra-clear large-area-array zoom lens for day and night use according to claim 2, wherein: the air distance from the biconvex positive lens A2 to the meniscus positive lens A3 is 0.1mm; the air distance from the double-concave negative lens B1 to the double-concave negative lens B2 is 5.63mm, and the air distance from the double-concave negative lens B2 to the double-concave negative lens B3 is 1.87mm; the air distance from the biconvex positive lens D1 to the meniscus positive lens D2 is 0.1mm, the air distance from the meniscus positive lens D2 to the biconcave negative lens D3 is 0.63mm, and the air distance from the biconcave negative lens D3 to the biconcave negative lens D4 is 3.18mm; the air distance from the biconvex positive lens E1 to the biconvex positive lens E2 is 0.1mm; the air distance from the biconcave negative lens F1 to the meniscus negative lens F2 is 1.4mm, the air distance from the meniscus positive lens F3 to the biconvex positive lens F4 is 8.96mm, and the distance from the biconvex positive lens F4 to the image plane is 10.5mm.
4. The ultra-clear large area array zoom lens for day and night use according to claim 1, wherein: the air distance from the front fixed group A to the zooming group B is 1.51-21.63 mm; the air distance from the zooming group B to the iris diaphragm C is 1.18-21.3 mm; the air distance from the middle fixed group D to the compensation group E is 0.1-2.15 mm; the air distance from the compensation group E to the rear fixed group F is 0.1 mm-2.15 mm.
5. The ultra-clear large-area-array zoom lens for day and night use according to claim 2, wherein: in the first gluing sheet, the third gluing sheet and the fourth gluing sheet, the refractive index difference of the gluing sheets is larger than 0.15.
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| CN202111655681.1A CN114355595B (en) | 2021-12-31 | 2021-12-31 | Super-clean large-area array day and night dual-purpose zoom lens |
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| CN202111655681.1A CN114355595B (en) | 2021-12-31 | 2021-12-31 | Super-clean large-area array day and night dual-purpose zoom lens |
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| CN114355595B true CN114355595B (en) | 2023-04-07 |
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| US7889440B2 (en) * | 2009-01-30 | 2011-02-15 | Nkon Corporation | Zoom lens, optical apparatus equipped therewith and method for manufacturing the zoom lens |
| JP5498259B2 (en) * | 2010-05-24 | 2014-05-21 | 株式会社タムロン | High magnification zoom lens |
| JP7149795B2 (en) * | 2018-09-28 | 2022-10-07 | 株式会社タムロン | Zoom lens and imaging device |
| US11953662B2 (en) * | 2020-02-28 | 2024-04-09 | Ricoh Company, Ltd. | Zoom lens, lens barrel, and image-capturing device |
| CN214846009U (en) * | 2021-06-09 | 2021-11-23 | 舜宇光学(中山)有限公司 | Optical system and zoom lens |
| CN113534423A (en) * | 2021-07-15 | 2021-10-22 | 舜宇光学(中山)有限公司 | Zoom lens |
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