CN207123650U - A kind of big target surface machine visual lens of high-resolution - Google Patents
A kind of big target surface machine visual lens of high-resolution Download PDFInfo
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- CN207123650U CN207123650U CN201720784268.8U CN201720784268U CN207123650U CN 207123650 U CN207123650 U CN 207123650U CN 201720784268 U CN201720784268 U CN 201720784268U CN 207123650 U CN207123650 U CN 207123650U
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Abstract
Lens technology field, more particularly to a kind of big target surface machine visual lens of high-resolution are the utility model is related to, are included successively along light incident direction：Focusing group and fixed group, the focusing group include successively：First lens, the first balsaming lens group, diaphragm, the second balsaming lens group and the 6th lens；The focal length of the big target surface machine visual lens of high-resolution meets following relation with the focal length of the focusing group：0.9 ≤ ∣ f tune/f ∣≤1.3；The combined focal length of the focal length of the big target surface machine visual lens of high-resolution and the second balsaming lens group and the 6th lens meets following relation：0.8≤∣f(U2+G6)/f∣≤1.2；The utility model has the characteristics that high resolution, big target surface, small size, low distortion, and operating distance can support 0.2m to infinity, suitable for the camera lens of 35mm focal lengths, particularly suitable as machine visual lens application.
Description
Technical field
It the utility model is related to lens technology field, more particularly to a kind of big target surface machine visual lens of high-resolution.
Background technology
Machine visual lens are widely used in the fields such as the manufacturing, quality testing, logistics, medical science, scientific research.With
The development of the strategy of made in China 2025, industrial automation is fast-developing, and " eye of the machine visual lens as automatic machinery
Eyeball " is in occupation of critical role.
Machine vision image capture device is divided into linear array type and face formation according to chip type, at present, using than wide
Be face formation camera.Face formation camera be for general on fixed position monitoring, detection particular range in target, with chip
The development of technology, the raising of detection level, machine visual lens are proposed with higher requirement：Occupy little space, support target surface
Greatly, distort it is low, as matter height be development trend.
Conventional machines vision lenses typically support target surface below 2/3 ", to support below the mega pixel of resolution ratio five,
It can not meet the big demand of industry, in addition, the whole group focusing mode that conventional lenses use is difficult to meet large range of working distance
It is required that such as when working distance is away from best operational position, edge declines substantially as matter.
In view of this big target surface sensor chip of a support is developed, high-resolution machine visual lens are very necessary
's.
Utility model content
The utility model provides a kind of big target surface machine visual lens of high-resolution, has high resolution, big target surface, small
The features such as volume, low distortion, operating distance can support 0.2m to infinity, suitable for the camera lens of 35mm focal lengths, to be particularly suitable for making
For machine visual lens application.
In order to solve the above-mentioned technical problem, technical solution adopted in the utility model is：
A kind of big target surface machine visual lens of high-resolution, include successively along light incident direction：Focusing group and fixed group, institute
State focusing group includes successively：First lens, the first balsaming lens group, diaphragm, the second balsaming lens group and the 6th lens；The height
The focal length of the big target surface machine visual lens of resolution ratio meets following relation with the focal length of the focusing group：0.9 ≤ ∣ f tune/f ∣≤
1.3；The focal lengths of the big target surface machine visual lens of high-resolution and the second balsaming lens group and the 6th lens
Combined focal length meets following relation：0.8≤∣ f(U2+G6)/f∣≤1.2；
Wherein, the f is adjusted to the focal length of the focusing group, and the f is the big target surface machine visual lens of the high-resolution
Focal length, the f (U2+G6) is the combined focal length of the second balsaming lens group and the 6th lens.
Preferably, described fixed group includes：7th lens, and the 8th lens with the 7th lens bonding.
Preferably, the first balsaming lens group includes：Second lens, and it is saturating with the 3rd of second lens bonding
Mirror.
Preferably, the second balsaming lens group includes：4th lens, and it is saturating with the 5th of the 4th lens bonding
Mirror.
Preferably, the physical parameter of first lens and the 6th lens meets following relation：
Wherein, f1 and f6 corresponds to the focal length of first lens and the 6th lens, and n1 and n6 correspond to described
One lens and the 6th index of refraction in lens, R1 and R2 correspond to the face of eyeglass first and the face of eyeglass second of first lens
Radius of curvature, R11 and R12 correspond to the face of eyeglass first of the 6th lens and the radius of curvature in the face of eyeglass second, and "-" represents
Direction is negative.
Preferably, the physical parameter of the 7th lens and the 8th lens meets following relation：
Wherein, f7 and f8 corresponds to the focal length of the 7th lens and the 8th lens, and n7 and n8 correspond to described
Seven lens and the 8th index of refraction in lens, R13 and R14 correspond to the face of eyeglass first and the face of eyeglass second of the 7th lens
Radius of curvature, R15 and R16 correspond to the face of eyeglass first of the 8th lens and the radius of curvature in the face of eyeglass second, "-" table
It is negative to show direction.
Preferably, the physical parameter of second lens and the 3rd lens meets following relation：
Wherein, f2 and f3 corresponds to the focal length of second lens and the 3rd lens, and n2 and n3 correspond to described
Two lens and the 3rd index of refraction in lens, R3 and R4 correspond to the face of eyeglass first and the face of eyeglass second of second lens
Radius of curvature, R5 and R6 correspond to the face of eyeglass first of the 3rd lens and the radius of curvature in the face of eyeglass second, "-" expression side
To be negative.
Preferably, the physical parameter of the 4th lens and the 5th lens meets following relation：
Wherein, f4 and f5 corresponds to the focal length of the 4th lens and the 5th lens, and n4 and n5 correspond to described
Four lens and the 5th index of refraction in lens, R7 and R8 correspond to the face of eyeglass first and the face of eyeglass second of the 4th lens
Radius of curvature, R9 and R10 correspond to the face of eyeglass first of the 5th lens and the radius of curvature in the face of eyeglass second, and "-" represents
Direction is negative.
Preferably, the focusing group is close to object plane one end, and described fixed group close to image planes one end.
The big target surface machine visual lens of a kind of high-resolution of the present utility model, include successively along light incident direction：First
Lens, focusing group and fixed group, the focusing group include successively：First balsaming lens group, diaphragm, the second balsaming lens group and
Six lens；The focal length of the big target surface machine visual lens of high-resolution meets following relation with the focal length of the focusing group：0.9
≤ ∣ f tune/f ∣≤1.3；The focal length of the big target surface machine visual lens of high-resolution and the second balsaming lens group and described
The combined focal length of 6th lens meets following relation：0.8≤∣f(U2+G6)/f∣≤1.2.The utility model is focused using packet
Mode, ensure that image quality is outstanding under 0.2m to infinity object distance, and need not increase pad function, the focal length
Relation set, also cause optical distortion of the present utility model at maximum absolute value full filed be less than 0.2%, optical system side
Edge light relative illumination is more than 70%, using ensureing that resolving power meets imaging requirements under -40~70 DEG C of environment.This practicality is new
Type has the characteristics that high resolution, big target surface, small size, low distortion, and operating distance can support 0.2m to infinity, to be applied to
The camera lens of 35mm focal lengths, particularly suitable as machine visual lens application.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the big target surface machine visual lens of high-resolution of the utility model.
Embodiment
Below in conjunction with the accompanying drawings, embodiment of the present utility model is specifically illustrated, accompanying drawing is only for reference and explanation uses, not structure
The limitation of paired the utility model patent protection domain.
It refer to Fig. 1, a kind of big target surface machine visual lens of high-resolution of the present utility model, along light incident direction successively
Including：Focusing group 1 and fixed group 2.Wherein, the focusing group 1 is close to object plane one end, and the fixed group 2 is close to image planes one
End, the fixed group 2 are fixed relative to image planes position, i.e., optic back focal is constant, when operating distance changes, can pass through the tune
The movable of Jiao's group 1 finds optimum image plane.
Specifically, the focusing group 1 includes successively：First lens G1, the first balsaming lens group U1, diaphragm 11, the second glue
Lens group U2 and the 6th lens G6 is closed, the fixed group 2 includes：7th lens G7, and the with the 7th lens G7 bondings
Eight lens G8.The first balsaming lens group U1 includes：Second lens G2, and the 3rd lens with the second lens G2 bondings
G3, the second balsaming lens U2 groups include：4th lens G4, and the 5th lens G5 with the 4th lens G4 bondings.More
Specifically, the first lens G1, the second lens G2, the 3rd lens G3, the 4th lens G4, the described 5th saturating
Mirror G5, the 6th lens G6, the 7th lens G7 and the 8th lens G8 physical parameter refer to table 1：
Table 1
Wherein, " f " is focal length, and " n " is refractive index, and " R " is radius of curvature, and "-" represents that direction is negative.More specifically, institute
State f1 to the f8 and correspond respectively to the first lens G1 to the focal length of the 8th lens G8；The n1 to the n8 points
Not Dui Yingyu the first lens G1 to the 8th lens G8 refractive index；The R1, the R3, the R5, the R7, institute
State the close object space that R9, the R11, the R13 and the R15 correspond respectively to the first lens G1 to the 8th lens G8
One side radius of curvature, the R2, the R4, the R6, the R8, the R10, the R12, the R14 and described
R16 corresponds respectively to the first lens G1 to the radius of curvature of the one side of the remote object space of the 8th lens G8.
It should be noted that the first lens G1 has positive light coke, the second lens G2 has negative power, institute
Stating the 3rd lens G3 has negative power, and the 4th lens G4 has positive light coke, and the 5th lens G5 has positive light focus
Degree, the 6th lens G6 have negative power, and the 7th lens G7 has positive light coke, and the 8th lens G8 has
Positive light coke.The second lens G2 and the 3rd lens G3 are bonded by optical glue, the 4th lens G4 and described
5th lens G5 is bonded by optical glue, and the 7th lens G7 and the 8th lens G8 are bonded by optical glue.Need
It is further noted that the first lens G1 to the 8th lens G8 is glass spheric glass.
Further, the focal length of the big target surface machine visual lens of the high-resolution and the focal length of the focusing group 1 meet
Following relation：0.9 ≤ ∣ f tune/f ∣≤1.3；The focal length of the big target surface machine visual lens of high-resolution is glued with described second
Lens group U2 and the 6th lens G6 combined focal length meet following relation： 0.8≤∣f(U2+G6)/f∣≤1.2；Wherein,
The f is adjusted to the focal length of the focusing group 1, and the f is the focal length of the big target surface machine visual lens of the high-resolution, the f
(U2+G6) combined focal length for being the second balsaming lens group U2 and the 6th lens G6.Further, the f adjust=-
8.1mm。
Focal length f=35mm, relative aperture D/f=1 when the big target surface machine visual lens of the high-resolution:2.8, image planes
Size φ 17.6mm, overall length TTL=56mm (working distance 0.35m), working distance scope：0.2m- infinitys, the institute of the present embodiment
State the radius of curvature in the first lens G1 to the 8th lens G8 totally ten six faces, lens thickness, eyeglass spacing and eyeglass folding
Penetrate rate and meet the condition of table 2 respectively：
Table 2
Wherein, " Nd " represents refractive index, and " D " represents lens thickness, and "-" represents that direction is negative.
From the above, it can be seen that the utility model uses full glass spheric glass, it is ensured that Performance of Optical System
The characteristics of ensureing material low cost, eyeglass easy processing simultaneously.Design supports maximum to practise physiognomy φ 17.6mm, supports 1.1 " image sensings
Device chip, maximum support 12,000,000 pixel resolutions, by the way of packet is focused, ensure that 0.2m under the object distance of infinity into
As quality it is outstanding, and need not increase pad the advantages of, structure setting of the present utility model also achieves optical distortion in absolute value
Maximum full filed is less than 0.2%, and optical system rim ray relative illumination is more than 70%, and in -40~70 DEG C of environment
Lower use ensures that resolving power meets the function of imaging requirements.Structure setting of the present utility model has high resolution, big target surface, small
The features such as volume, low distortion, operating distance can support 0.2m to infinity, suitable for the camera lens of 35mm focal lengths, to be particularly suitable for making
For machine visual lens application.
Above disclosed is only preferred embodiment of the present utility model, it is impossible to limits right of the present utility model with this
Protection domain, therefore the equivalent variations made according to present utility model application the scope of the claims, still belong to the model that the utility model is covered
Enclose.
Claims (9)
1. a kind of big target surface machine visual lens of high-resolution, it is characterised in that include successively along light incident direction：Focusing group and
Fixed group, the focusing group include successively：First lens, the first balsaming lens group, diaphragm, the second balsaming lens group and the 6th are saturating
Mirror；The focal length of the big target surface machine visual lens of high-resolution meets following relation with the focal length of the focusing group：0.9≤∣f
Tune/f ∣≤1.3；The focal length of the big target surface machine visual lens of high-resolution and the second balsaming lens group and the described 6th
The combined focal length of lens meets following relation：0.8≤∣f(U2+G6)/f∣≤1.2；
Wherein, the f is adjusted to the focal length of the focusing group, and the f is Jiao of the big target surface machine visual lens of the high-resolution
Away from the f (U2+G6) is the second balsaming lens group and the combined focal length of the 6th lens.
2. the big target surface machine visual lens of high-resolution as claimed in claim 1, it is characterised in that described fixed group includes：
7th lens, and the 8th lens with the 7th lens bonding.
3. the big target surface machine visual lens of high-resolution as claimed in claim 1, it is characterised in that first balsaming lens
Group includes：Second lens, and the 3rd lens with second lens bonding.
4. the big target surface machine visual lens of high-resolution as claimed in claim 1, it is characterised in that second balsaming lens
Group includes：4th lens, and the 5th lens with the 4th lens bonding.
5. the big target surface machine visual lens of high-resolution as claimed in claim 1, it is characterised in that first lens and institute
The physical parameter for stating the 6th lens meets following relation：
Wherein, f1 and f6 corresponds to the focal length of first lens and the 6th lens, and it is saturating that n1 and n6 correspond to described first
Mirror and the 6th index of refraction in lens, R1 and R2 correspond to the face of eyeglass first of first lens and the curvature in the face of eyeglass second
Radius, R11 and R12 correspond to the face of eyeglass first of the 6th lens and the radius of curvature in the face of eyeglass second, and "-" represents direction
It is negative.
6. the big target surface machine visual lens of high-resolution as claimed in claim 2, it is characterised in that the 7th lens and institute
The physical parameter for stating the 8th lens meets following relation：
Wherein, f7 and f8 corresponds to the focal length of the 7th lens and the 8th lens, and it is saturating that n7 and n8 correspond to the described 7th
Mirror and the 8th index of refraction in lens, R13 and R14 correspond to the face of eyeglass first of the 7th lens and the song in the face of eyeglass second
Rate radius, R15 and R16 correspond to the face of eyeglass first of the 8th lens and the radius of curvature in the face of eyeglass second, "-" expression side
To be negative.
7. the big target surface machine visual lens of high-resolution as claimed in claim 3, it is characterised in that second lens and institute
The physical parameter for stating the 3rd lens meets following relation：
Wherein, f2 and f3 corresponds to the focal length of second lens and the 3rd lens, and it is saturating that n2 and n3 correspond to described second
Mirror and the 3rd index of refraction in lens, R3 and R4 correspond to the face of eyeglass first of second lens and the curvature in the face of eyeglass second
Radius, R5 and R6 correspond to the face of eyeglass first of the 3rd lens and the radius of curvature in the face of eyeglass second, and "-" represents that direction is
It is negative.
8. the big target surface machine visual lens of high-resolution as claimed in claim 4, it is characterised in that the 4th lens and institute
The physical parameter for stating the 5th lens meets following relation：
Wherein, f4 and f5 corresponds to the focal length of the 4th lens and the 5th lens, and it is saturating that n4 and n5 correspond to the described 4th
Mirror and the 5th index of refraction in lens, R7 and R8 correspond to the face of eyeglass first of the 4th lens and the curvature in the face of eyeglass second
Radius, R9 and R10 correspond to the face of eyeglass first of the 5th lens and the radius of curvature in the face of eyeglass second, and "-" represents direction
It is negative.
9. the big target surface machine visual lens of high-resolution as claimed in claim 1, it is characterised in that the focusing group is close
Object plane one end, described fixed group close to image planes one end.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107153263A (en) * | 2017-06-30 | 2017-09-12 | 东莞市宇瞳光学科技股份有限公司 | A kind of big target surface machine visual lens of high-resolution |
| CN109116517A (en) * | 2018-10-19 | 2019-01-01 | 广东奥普特科技股份有限公司 | A kind of big target surface high-res line of high magnification sweeps machine visual lens |
| CN109283651A (en) * | 2018-12-12 | 2019-01-29 | 广东奥普特科技股份有限公司 | A kind of high-resolution machine visual lens structure small in size |
| WO2021128383A1 (en) * | 2019-12-28 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| WO2021128393A1 (en) * | 2019-12-28 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| WO2021128390A1 (en) * | 2019-12-28 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| WO2021127808A1 (en) * | 2019-12-23 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| CN113467053A (en) * | 2021-07-14 | 2021-10-01 | 光虎光电科技(天津)有限公司 | Large-target-surface FA lens |
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- 2017-06-30 CN CN201720784268.8U patent/CN207123650U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107153263A (en) * | 2017-06-30 | 2017-09-12 | 东莞市宇瞳光学科技股份有限公司 | A kind of big target surface machine visual lens of high-resolution |
| CN107153263B (en) * | 2017-06-30 | 2023-08-15 | 东莞市宇瞳光学科技股份有限公司 | High-resolution large-target-surface machine vision lens |
| CN109116517A (en) * | 2018-10-19 | 2019-01-01 | 广东奥普特科技股份有限公司 | A kind of big target surface high-res line of high magnification sweeps machine visual lens |
| CN109116517B (en) * | 2018-10-19 | 2023-10-10 | 广东奥普特科技股份有限公司 | High-resolution linear scanning machine vision lens with high magnification and large target surface |
| CN109283651A (en) * | 2018-12-12 | 2019-01-29 | 广东奥普特科技股份有限公司 | A kind of high-resolution machine visual lens structure small in size |
| WO2021127808A1 (en) * | 2019-12-23 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| WO2021128383A1 (en) * | 2019-12-28 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| WO2021128393A1 (en) * | 2019-12-28 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| WO2021128390A1 (en) * | 2019-12-28 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| CN113467053A (en) * | 2021-07-14 | 2021-10-01 | 光虎光电科技(天津)有限公司 | Large-target-surface FA lens |
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Inventor after: Zhang Pinguang Inventor after: Mi Shilong Inventor after: Liu Guanlu Inventor after: He Jianwei Inventor after: Mao Caiying Inventor before: Mi Shilong |