CN207833090U - A kind of wide-angle machine visual lens - Google Patents
A kind of wide-angle machine visual lens Download PDFInfo
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- CN207833090U CN207833090U CN201721864190.7U CN201721864190U CN207833090U CN 207833090 U CN207833090 U CN 207833090U CN 201721864190 U CN201721864190 U CN 201721864190U CN 207833090 U CN207833090 U CN 207833090U
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Abstract
A kind of wide-angle machine visual lens, include the fixed lens group arranged along optical axis and focusing lens group, focusing lens group includes the first lens with positive light coke being arranged in order from the object side to the image side along optical axis, the second lens with negative power, the third lens with negative power and with the 4th lens of negative power；Fixed lens group includes the 5th lens with positive light coke being arranged in order from the object side to the image side along optical axis, the 6th lens with positive light coke, the 7th lens with negative power, the 8th lens with positive light coke, the 9th lens with positive light coke and the tenth lens with negative power；Focusing lens group meets following conditional with entire camera lens：0.8 ∣≤1.2 ≤ ∣ ft/f, wherein ft is the combined focal length of focusing lens group, and f is the focal length of entire camera lens.The camera lens has the features such as image quality is outstanding, distortion is small, and field of view angle is big.
Description
Technical field
The utility model is related to lens technology field more particularly to a kind of wide-angle machine visual lens.
Background technology
Machine visual lens are widely used in the fields such as the manufacturing, quality testing, logistics, medicine, scientific research.With
The development of 2025 strategy of made in China, industrial automation is fast-developing, and " eye of the machine visual lens as automatic machinery
Eyeball " is in occupation of critical role.
Machine visual lens are for general on fixed position monitoring, detect the target in particular range, this requires camera lens to have
It occupies little space, field range is big, distorts the features such as low, image quality is high.Patent application (the proprietary term submitted before the applicant
Claim：A kind of wide-angle high definition machine visual lens, application No. is a angle involved in 201710386448.5) more than 70 °
Camera lens scheme, if field angle continues to increase, the eyeglass of the program will become difficult to process, and aberration is also due to field angle adds
It becomes difficult to optimize greatly, it is therefore necessary to further research and develop it.
Invention content
The utility model provides a kind of wide-angle machine visual lens, overcomes the defect pointed out in background technology.
In order to solve the above-mentioned technical problem, technical solution adopted in the utility model is：
A kind of wide-angle machine visual lens, include the fixed lens group arranged along optical axis and focusing lens group, work as working distance
When from changing, focusing lens group is relatively fixed lens group back-and-forth motion and focuses, to find optimal imaging face, the focusing
Lens group includes the first lens with positive light coke being arranged in order from the object side to the image side along optical axis, with negative power
Two lens, the third lens with negative power and the 4th lens with negative power；The fixed lens group includes along light
The 5th lens with positive light coke that axis is arranged in order from the object side to the image side, the 6th lens with positive light coke have negative
7th lens of focal power, the 8th lens with positive light coke, the 9th lens with positive light coke and with negative power
The tenth lens；The focusing lens group meets following conditional with entire camera lens：
0.8 ∣≤1.2 ≤ ∣ ft/f, wherein ft is the combined focal length of focusing lens group, and f is the focal length of entire camera lens.
Further, the fixed lens group further include along optical axis be arranged in the tenth lens image side the 11st thoroughly
Mirror, the 11st lens have positive light coke.
Preferably, the 6th lens and the 7th lens gluing form the first balsaming lens, the 9th lens and the tenth
Lens gluing forms the second balsaming lens.
Further, the 9th lens and the tenth lens meet following conditional：∣Nd9-Nd10∣≥0.25；∣Vd9-
∣ >=30 Vd10, wherein Nd9, Nd10 are respectively the refractive index of the 9th lens and the tenth lens, and Vd9, Vd10 are respectively the 9th saturating
The Abbe number of mirror and the tenth lens.
Preferably, the material of the 9th lens is fluorine crown series or weight phosphorus crown P series glass material, the tenth lens
Material be high refractive index dense flint P series glass material.
Further, the focal length and refractive index of first lens to the 11st lens meet following conditional：
| 38.54≤f1≤55.87 | 1.62≤n1≤1.76 |
| -33.73≤f2≤-20.15 | 1.49≤n2≤1.68 |
| -22.41≤f3≤-8.365 | 1.62≤n3≤1.75 |
| -22.41≤f4≤-8.365 | 1.65≤n4≤1.82 |
| 14.77≤f5≤22.53 | 1.72≤n5≤1.85 |
| 6.123≤f6≤14.10 | 1.54≤n6≤1.65 |
| -10.24≤f7≤-6.514 | 1.65≤n7≤1.82 |
| 18.32≤f8≤38.93 | 1.54≤n8≤1.65 |
| 7.965≤f9≤15.77 | 1.45≤n9≤1.60 |
| -25.78≤f10≤-13.65 | 1.80≤n10≤1.92 |
| 20.96≤f11≤38.77 | 1.45≤n11≤1.60 |
Wherein, f1 to f11 respectively represents the first lens to the focal length of the 11st lens in order, and n1 to n11 divides in order
The first lens are not represented to the refractive index of the 11st lens.
Further, the focal length of second lens, the third lens and the 4th lens meets following conditional：
1≤Max (| f2 |, | f3 |, | f4 |)/Min (| f2 |, | f3 |, | f4 |)<2, wherein f2, f3 and f4 is respectively second
The focal length of lens, the third lens and the 4th lens, Max are to be maximized functional symbol, and Min is to be minimized functional symbol.
Further, the focal length of the 8th lens, the second balsaming lens and the 11st lens meets following conditional：
1≤Max (| f8 |, | fU2 |, | f11 |)/Min (| f8 |, | fU2 |, | f11 |)<2, wherein f8, fU2 and f11 distinguishes
For the 8th lens, the focal length of the second balsaming lens and the 11st lens, Max is to be maximized functional symbol, and Min is to be minimized
Functional symbol.
Preferably, it is provided with diaphragm between the 5th lens and the 6th lens.
The utility model provides a kind of wide-angle machine visual lens, is selected and is arranged by lens, it is ensured that optical system
Ensure material low cost, lens shape easy processing while energy.The lens design ensure that 0.1m in such a way that grouping is focused
Image quality is outstanding under to infinity object distance, and groundwork distance distortion is less than 1.5%；The optical system edge-light of the camera lens
Line relative illumination supports field angle to be more than 80 ° 65% or more, under -40~70 DEG C of environment using ensure resolving power meet at
As requiring.
Description of the drawings
Fig. 1 is a kind of optical texture schematic diagram of wide-angle machine visual lens of the utility model.
Specific implementation mode
Below in conjunction with the accompanying drawings, the embodiment of the utility model is specifically illustrated, attached drawing is only for reference and illustrates to use, not structure
The limitation of pairs of the utility model patent protection domain.
As shown in Figure 1, a kind of wide-angle machine visual lens, include the fixed lens group arranged along optical axis and focusing lens
Group, when operating distance changes, focusing lens group is relatively fixed lens group back-and-forth motion and focuses, to find optimal imaging
Face, the focusing lens group include the first lens 1 with positive light coke being arranged in order from the object side to the image side along optical axis, have
The second lens 2, the third lens 3 with negative power and the 4th lens 4 with negative power of negative power；The fixation
Lens group includes the 5th lens 5 with positive light coke being arranged in order from the object side to the image side along optical axis, with positive light coke
6th lens 6, the 7th lens 7 with negative power, the 8th lens 8 with positive light coke, the with positive light coke the 9th
Lens 9 and the tenth lens 10 with negative power；The focusing lens group meets following conditional with entire camera lens：
0.8 ∣≤1.2 ≤ ∣ ft/f, wherein ft is the combined focal length of focusing lens group, and f is the focal length of entire camera lens.
In the present embodiment, the fixed lens group further includes the 11 of the image side that the tenth lens 10 are arranged in along optical axis
Lens 11, the 11st lens 11 have positive light coke.
In the present embodiment, first balsaming lens U1 of the 6th lens 6 and the glued formation of the 7th lens 7, the described 9th thoroughly
Second balsaming lens U2 of mirror 9 and the glued formation of the tenth lens 10.It is provided with diaphragm between 5th lens 5 and the 6th lens 6
56。
In the present embodiment, the 9th lens 9 and the tenth lens 10 meet following conditional：∣Nd9-Nd10∣≥0.25；∣
∣ >=30 Vd9-Vd10, wherein Nd9, Nd10 are respectively the refractive index of the 9th lens 9 and the tenth lens 10, and Vd9, Vd10 are respectively
The Abbe number of 9th lens 9 and the tenth lens 10.Specifically, the material of the 9th lens 9 is fluorine crown series or weight phosphorus crown system
Row glass material, the material of the tenth lens 10 are the dense flint P series glass material of high refractive index.
The focal length and refractive index of first lens, 1 to the 11st lens 11 meet following conditional：
| 38.54≤f1≤55.87 | 1.62≤n1≤1.76 |
| -33.73≤f2≤-20.15 | 1.49≤n2≤1.68 |
| -22.41≤f3≤-8.365 | 1.62≤n3≤1.75 |
| -22.41≤f4≤-8.365 | 1.65≤n4≤1.82 |
| 14.77≤f5≤22.53 | 1.72≤n5≤1.85 |
| 6.123≤f6≤14.10 | 1.54≤n6≤1.65 |
| -10.24≤f7≤-6.514 | 1.65≤n7≤1.82 |
| 18.32≤f8≤38.93 | 1.54≤n8≤1.65 |
| 7.965≤f9≤15.77 | 1.45≤n9≤1.60 |
| -25.78≤f10≤-13.65 | 1.80≤n10≤1.92 |
| 20.96≤f11≤38.77 | 1.45≤n11≤1.60 |
Wherein, f1 to f11 respectively represents the first lens to the focal length of the 11st lens in order, and n1 to n11 divides in order
The first lens are not represented to the refractive index of the 11st lens.
In the present embodiment, the focal length of second lens 2, the third lens 3 and the 4th lens 4 meets following conditional：
1≤Max (| f2 |, | f3 |, | f4 |)/Min (| f2 |, | f3 |, | f4 |)<2, wherein f2, f3 and f4 is respectively second
The focal length of lens 2, the third lens 3 and the 4th lens 4, Max are to be maximized functional symbol, and Min is to be minimized functional symbol.
Simultaneously in the present embodiment, the focal length of the 8th lens 8, the second balsaming lens U2 and the 11st lens 11 meets such as
Lower conditional：
1≤Max (| f8 |, | fU2 |, | f11 |)/Min (| f8 |, | fU2 |, | f11 |)<2, wherein f8, fU2 and f11 distinguishes
For the 8th lens 8, the focal length of the second balsaming lens U2 and the 11st lens 11, Max is to be maximized functional symbol, and Min is to take
Minimum value function symbol.
In the present embodiment, the physical optical parameter of camera lens each lens and diaphragm, as shown in the table：
| Face serial number | R(mm) | D(mm) | Material |
| S1 | 24 | 6 | Nd=1.73 |
| S2 | 60 | 0.2 | |
| S3 | 21.5 | 1.5 | Nd=1.62 |
| S4 | 7.5 | 0.5 | |
| S5 | INF | 1.5 | Nd=1.65 |
| S6 | 9.8 | 1.8 | |
| S7 | INF | 1.5 | Nd=1.73 |
| S8 | 13 | 4 (adjustable) | |
| S9 | -92 | 6 | Nd=1.81 |
| S10 | -14.5 | 3.6 | |
| Diaphragm | 3.6 | ||
| S11 | 10 | 6 | Nd=1.60 |
| S12 | -22 | 1.5 | Nd=1.75 |
| S13 | 10 | 1.3 | |
| S14 | 26 | 3 | Nd=1.62 |
| S15 | -26 | 0.2 | |
| S16 | 140 | 6 | H-FK61 |
| S17 | -6.5 | 1.5 | H-ZF52 |
| S18 | -11 | 0.2 | |
| S19 | 34 | 3 | Nd=1.50 |
| S20 | -34 |
Wherein, R is surface central radius size, and D is to correspond to optical surface to next optical surface in the distance on optical axis；
Nd corresponds to the refractive index of d light (wavelength 587nm), and negative sign "-" represents direction, and (corresponding object side surface is concave surface, image space table
Corresponding face is then convex surface)；.S1 and S2 is the object side surface and image interface of the first lens 1, and S3 and S4 are the second lens 2
Object side surface and image interface, S5 and S6 are the object side surface and image interface of the third lens 3, and S7 and S8 are the 4th lens 4
Object side surface and image interface, S9 and S10 are the object side surface and image interface of the 5th lens 5, and S11 is the first balsaming lens U1
Object side surface, S12 be the first balsaming lens U1 cemented surface, S13 be the first balsaming lens U1 image interface；S14 and S15
For the object side surface and image interface of the 8th lens 8, S16 is the object side surface of the second balsaming lens U2, and S17 is second glued saturating
The cemented surface of mirror U2, S18 are the image interface of the second balsaming lens U2, S19 and S20 be the 11st lens 11 object side surface and
Image interface；H-FK61 represents fluorine crown series or weight phosphorus crown P series glass material, H-ZF52 represent dense flint P series glass material.
In the present embodiment, entire lens focus f=6mm, relative aperture FNO are 1:2.8, field angle FOV are 88 °.
Above disclosed is only the preferred embodiment of the utility model, and the right of the utility model cannot be limited with this
Protection domain, therefore equivalent variations made according to the patent scope of the utility model still belong to the model that the utility model is covered
It encloses.
Claims (9)
1. a kind of wide-angle machine visual lens, include the fixed lens group arranged along optical axis and focusing lens group, work as operating distance
When change, focusing lens group is relatively fixed lens group back-and-forth motion and focuses, and to find optimal imaging face, feature exists
In：The focusing lens group includes the first lens with positive light coke being arranged in order from the object side to the image side along optical axis, has
The second lens, the third lens with negative power and the 4th lens with negative power of negative power；The fixation is saturating
Microscope group includes the 5th lens with positive light coke being arranged in order from the object side to the image side along optical axis, and the with positive light coke the 6th
Lens, the 7th lens with negative power, the 8th lens with positive light coke, the 9th lens and tool with positive light coke
There are the tenth lens of negative power；The focusing lens group meets following conditional with entire camera lens：
0.8 ∣≤1.2 ≤ ∣ ft/f, wherein ft is the combined focal length of focusing lens group, and f is the focal length of entire camera lens.
2. a kind of wide-angle machine visual lens according to claim 1, it is characterised in that：The fixed lens group further includes
The 11st lens of the image side of the tenth lens are arranged in along optical axis, the 11st lens have positive light coke.
3. a kind of wide-angle machine visual lens according to claim 2, it is characterised in that：6th lens and the 7th are thoroughly
Mirror gluing forms the first balsaming lens, and the 9th lens and the tenth lens gluing form the second balsaming lens.
4. a kind of wide-angle machine visual lens according to claim 3, it is characterised in that：9th lens and the tenth are thoroughly
Mirror meets following conditional：∣Nd9-Nd10∣≥0.25；∣ >=30 ∣ Vd9-Vd10, wherein Nd9, Nd10 are respectively the 9th lens
With the refractive index of the tenth lens, Vd9, Vd10 are respectively the Abbe number of the 9th lens and the tenth lens.
5. a kind of wide-angle machine visual lens according to claim 4, it is characterised in that：The material of 9th lens is
Fluorine crown series or weight phosphorus crown P series glass material, the material of the tenth lens are the dense flint P series glass material of high refractive index
Material.
6. a kind of wide-angle machine visual lens according to claim 3, which is characterized in that first lens to the 11st
The focal length and refractive index of lens meet following conditional：
Wherein, f1 to f11 respectively represents the first lens to the focal length of the 11st lens in order, n1 to n11 generations respectively in order
The first lens of table to the 11st lens refractive index.
7. a kind of wide-angle machine visual lens according to claim 6, which is characterized in that second lens, third are saturating
The focal length of mirror and the 4th lens meets following conditional：
1≤Max (| f2 |, | f3 |, | f4 |)/Min (| f2 |, | f3 |, | f4 |)<2, wherein f2, f3 and f4 be respectively the second lens,
The focal length of the third lens and the 4th lens, Max are to be maximized functional symbol, and Min is to be minimized functional symbol.
8. a kind of wide-angle machine visual lens according to claim 6, which is characterized in that the 8th lens, the second glue
The focal length for closing lens and the 11st lens meets following conditional：
1≤Max (| f8 |, | fU2 |, | f11 |)/Min (| f8 |, | fU2 |, | f11 |)<2, wherein f8, fU2 and f11 is respectively
The focal length of eight lens, the second balsaming lens and the 11st lens, Max are to be maximized functional symbol, and Min is to be minimized function
Symbol.
9. a kind of wide-angle machine visual lens according to claim 3, it is characterised in that：5th lens and the 6th are thoroughly
Diaphragm is provided between mirror.
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| 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 |
| CN110018554A (en) * | 2019-03-15 | 2019-07-16 | 广东奥普特科技股份有限公司 | A kind of wide-angle machine visual lens |
| CN111694135A (en) * | 2020-07-15 | 2020-09-22 | 北创光电科技(邵阳)有限公司 | Big wide angle video camera lens of focus 8mm |
| CN111897091A (en) * | 2020-08-05 | 2020-11-06 | 浙江大华技术股份有限公司 | Lens |
| WO2021114249A1 (en) * | 2019-12-13 | 2021-06-17 | 诚瑞光学(常州)股份有限公司 | Imaging optical lens |
| CN113866960A (en) * | 2021-12-02 | 2021-12-31 | 浙江华睿科技股份有限公司 | Optical imaging lens system |
| CN114706198A (en) * | 2022-05-06 | 2022-07-05 | 广东奥普特科技股份有限公司 | High-resolution large-view-field optical lens and optical equipment |
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| CN109884779B (en) * | 2019-03-15 | 2023-10-27 | 广东奥普特科技股份有限公司 | Low-distortion lens |
| CN110018554A (en) * | 2019-03-15 | 2019-07-16 | 广东奥普特科技股份有限公司 | A kind of wide-angle machine visual lens |
| 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 |
| CN110018554B (en) * | 2019-03-15 | 2024-03-26 | 广东奥普特科技股份有限公司 | Wide-angle machine vision lens |
| WO2021114249A1 (en) * | 2019-12-13 | 2021-06-17 | 诚瑞光学(常州)股份有限公司 | Imaging optical lens |
| CN111694135A (en) * | 2020-07-15 | 2020-09-22 | 北创光电科技(邵阳)有限公司 | Big wide angle video camera lens of focus 8mm |
| CN111694135B (en) * | 2020-07-15 | 2024-05-31 | 北创光电科技(邵阳)有限公司 | Large wide-angle video lens with focal length of 8mm |
| CN111897091A (en) * | 2020-08-05 | 2020-11-06 | 浙江大华技术股份有限公司 | Lens |
| CN111897091B (en) * | 2020-08-05 | 2021-12-14 | 浙江大华技术股份有限公司 | Lens |
| CN113866960A (en) * | 2021-12-02 | 2021-12-31 | 浙江华睿科技股份有限公司 | Optical imaging lens system |
| CN113866960B (en) * | 2021-12-02 | 2022-04-15 | 浙江华睿科技股份有限公司 | Optical imaging lens system |
| CN114706198B (en) * | 2022-05-06 | 2023-10-03 | 广东奥普特科技股份有限公司 | High-resolution large-view-field optical lens and optical equipment |
| CN114706198A (en) * | 2022-05-06 | 2022-07-05 | 广东奥普特科技股份有限公司 | High-resolution large-view-field optical lens and optical equipment |
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