CN207601415U - The big multiplying power zoom lens of large aperture - Google Patents
The big multiplying power zoom lens of large aperture Download PDFInfo
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- CN207601415U CN207601415U CN201721479428.4U CN201721479428U CN207601415U CN 207601415 U CN207601415 U CN 207601415U CN 201721479428 U CN201721479428 U CN 201721479428U CN 207601415 U CN207601415 U CN 207601415U
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Abstract
The utility model is related to optical devices technologies field more particularly to the big multiplying power zoom lens of large aperture, include successively along incident ray：Preceding group of stability, zoom group, intermediate group of stability and focusing group, total focal power of the preceding group of stability is just, total focal power of the intermediate group of stability is just, total focal power of the zoom group is negative, the total focal power for focusing on group is negative, the zoom group and the relative position for focusing on group are adjustable, and the focal length for focusing on group and the focal length of the zoom group meet following relationship：0.25<∣Bf'/Ff'∣<1.6；Wherein, the Bf' is the focal length of the zoom group, and the Ff' is the focal length for focusing on group.The utility model realizes the volume for reducing camera lens, increases field angle variation range, and improve the function of resolution.
Description
Technical field
The utility model is related to optical devices technologies field more particularly to the big multiplying power zoom lens of large aperture.
Background technology
The fields such as large-scale square, road monitoring, forest fire protection had both needed big visual field overall situation general view, it is also desirable to can be to emphasis
Target amplifies track lock.Therefore need it is a kind of can autozoom take into account wide-angle and the big multiplying power zoom lens of focal length.
Existing zoom lens optical structure has 2 constituent elements and multicomponent (being generally configured with more than 3 groups), wherein 2 groups
Meta structure has smaller volume, but its multiplying power is also smaller, usually less than 4.5 times, and multicomponent structure has larger multiplying power
10 times or more are generally reached, 20 times or more of multiplying power can also be realized according to 4 cluster structures.
Existing common big multiplying power zoom lens is generally configured with the aperture of F2.0~F5.0；20~30 times of zoom ratio；
The image quality of 130~2,000,000 pixels or so, with the development in the higher and higher Qinghua of industry, existing technical indicator cannot expire
Following demand of foot.Therefore a multiplying power bigger is developed, pixel higher, the zoom lens of thang-kng amount bigger is to meet the requirements.
Utility model content
The utility model provides the big multiplying power zoom lens of large aperture, realizes the volume for reducing camera lens, increases field angle
Variation range, and improve the function of resolution.
In order to solve the above-mentioned technical problem, technical solution adopted in the utility model is：
The big multiplying power zoom lens of large aperture, includes successively along incident ray：Preceding group of stability, zoom group, intermediate group of stability and
Group is focused on, total focal power of the preceding group of stability is just, total focal power of the intermediate group of stability is just, the zoom group's is total
Focal power is negative, and the total focal power for focusing on group is negative, and the relative position of the zoom group and the focusing group are adjustable and institute
It states the focal length of focusing group and meets following relationship with the focal length of the zoom group：
0.25<∣Bf'/Ff'∣<1.6；
Wherein, the Bf' is the focal length of the zoom group, and the Ff' is the focal length for focusing on group.
Preferably, the big multiplying power zoom lens of the entire large aperture is in big times of focal length, the entire large aperture of wide-angle side
For rate zoom lens in the focal length of telescope end, the focal length of the focal length of the preceding group of stability and the intermediate group of stability meets following relationship
Formula：
2.5<∣fq'/fw'∣<14.5；
2.5<∣fz'/fw'∣<14.5；
2.1<∣ft'/fq'∣<10.2；
2.1<∣ft'/fz'∣<10.2；
Wherein, the fq' is the focal length of the preceding group of stability, and the fw' is the entire big multiplying power varifocal mirror of large aperture
Head is the entire big multiplying power of large aperture in the focal length of wide-angle side, focal lengths of the fz' for the intermediate group of stability, the ft'
Zoom lens is in the focal length of telescope end.
Preferably, the preceding group of stability is equipped with from tactic first lens in object space side, second lens,
Third piece lens, the 4th lens, the 5th lens；First lens are convex-concave negative-power lenses, described second
Lens are biconvex positive power lens, and first lens pass through optics glue bond, the third with second lens
Piece lens are convex-concave positive power lens, and second lens are abutted with the third piece lens by washer, the described 4th
Piece lens are convex-concave positive power lens, and the third piece lens are abutted with the 4th lens by washer, the described 5th
Piece lens are convex-concave positive power lens, and the 4th lens are abutted with the 5th lens by washer.
Preferably, the zoom group is equipped with from the tactic six-element lens in object space side, the 7th lens, the
Eight lens, the 9th lens, the six-element lens is convex-concave negative-power lenses, and the 7th lens are that concave-concave bears light
Power lenses are directly born against between the six-element lens and the 7th lens by lens edge, and described 8th thoroughly
Mirror is concave-convex negative-power lenses, and the 7th lens and the 8th lens are directly born against by lens edge, described
9th lens are biconvex positive power lens, and the 8th lens and the 9th lens are abutted by washer.
Preferably, the intermediate group of stability is equipped with from the lens of object space side the tactic ten, and the tenth is a piece of
Lens, the described ten lens are a piece of biconvex positive power lens, and the tenth a piece of lens are a piece of convex-concave negative powers
Lens, the described ten lens and the tenth a piece of lens are abutted by washer.
Preferably, the focusing group is equipped with from tactic 12nd lens in object space side, and the tenth three pieces are saturating
Mirror, the 14th lens and the 15th lens, the 12nd lens are biconvex positive power lens, the tenth three pieces
Lens are concave-convex negative-power lenses, and the 12nd lens and the tenth three pieces lens are described by optics glue bond
14th lens are convex-concave positive power lens, pass through washer between the tenth three pieces lens and the 14th lens
Abut, the 15th lens are biconvex positive power lens, the 14th lens and the 15th lens it
Between abutted by washer.
Preferably, the six-element lens is glass aspheric lenses.
Preferably, the described ten lens are glass aspheric lenses.
Preferably, the 15th lens are glass aspheric lenses.
The big multiplying power zoom lens of large aperture of the utility model, by setting four constituent element Zoom optic lens, including preceding solid
Grouping, zoom group, intermediate group of stability and focus on group, by adjust the zoom group and the relative position for focusing on group and
The focal length for focusing on group and the focal length relationship of the zoom group are arranged to following relational expression：0.25<∣Bf'/Ff'∣<1.6
So that the utility model is realized under the premise of the volume of camera lens is reduced, increase field angle variation range is remained to, and improve
Resolution, the utility model can be realized in the environment of -40 DEG C -+80 DEG C using not running coke, it is seen that light is total to infrared light
It is burnt, it is seen that light imaging definition is in 4,000,000 pixels with first-class technical indicator.
Description of the drawings
Fig. 1 is the structure diagram of the wide-angle side of the big multiplying power zoom lens of large aperture of the utility model.
Fig. 2 is the structure diagram of the telescope end of the big multiplying power zoom lens of large aperture of the utility model.
Specific embodiment
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.
It please refers to Fig.1 and Fig. 2, the big multiplying power zoom lens of large aperture of the utility model includes successively along incident ray：Before
Group of stability 1, zoom group 2, intermediate group of stability 3 and focusing group 4, wherein, total focal power of the preceding group of stability 1 is just, in described
Between group of stability 3 total focal power for just, total focal power of the zoom group 2 be it is negative, total focal power of the focusing group 4 be it is negative,
The zoom group 2 and the relative position for focusing on group 4 are adjustable, and the focal length of the focal length and the zoom group 2 for focusing on group 4
Meet following relationship：
0.25<∣Bf'/Ff'∣<1.6；
Wherein, the Bf' is the focal length of the zoom group 2, and the Ff' is the focal length for focusing on group 4.
Focal length, the entire large aperture big multiplying power varifocal mirror of the big multiplying power zoom lens of entire large aperture in wide-angle side
For head in the focal length of telescope end, the focal length of the focal length of the preceding group of stability and the intermediate group of stability meets relationship below：
2.5<∣fq'/fw'∣<14.5；
2.5<∣fz'/fw'∣<14.5；
2.1<∣ft'/fq'∣<10.2；
2.1<∣ft'/fz'∣<10.2；
Wherein, the fq' is the focal length of the preceding group of stability, and the fw' is the entire big multiplying power varifocal mirror of large aperture
Head is the entire big multiplying power of large aperture in the focal length of wide-angle side, focal lengths of the fz' for the intermediate group of stability, the ft'
Zoom lens is in the focal length of telescope end
Specifically, the preceding group of stability 1 is equipped with from the tactic first lens L1 in object space side, and second thoroughly
Mirror L2, third piece lens L3, the 4th lens L4, the 5th lens L5；First lens L1 is that convex-concave negative power is saturating
Mirror, second lens L2 is biconvex positive power lens, and first lens L1 passes through with second lens L2
Optics glue bond, the third piece lens L3 is convex-concave positive power lens, and second lens L2 and the third piece are saturating
Mirror L3 is abutted by washer, and the 4th lens L4 is convex-concave positive power lens, the third piece lens L3 and described the
Four lens L4 are abutted by washer, and the 5th lens L5 is convex-concave positive power lens, the 4th lens L4
It is abutted with the 5th lens L5 by washer.The zoom group 2 is equipped with tactic 6th from object space side
Lens L6, the 7th lens L7, the 8th lens L8, the 9th lens L9, the six-element lens L6 is convex-concave negative power
Lens, the 7th lens L7 are concave-concave negative-power lenses, the six-element lens L6 and the 7th lens L7 it
Between directly born against by lens edge, the 8th lens L8 is concave-convex negative-power lenses, the 7th lens L7 and
The 8th lens L8 is directly born against by lens edge, and the 9th lens L9 is biconvex positive power lens, described
8th lens L8 and the 9th lens L9 are abutted by washer.The intermediate group of stability 3 is equipped with from object space side
Tactic ten lens L10, the tenth a piece of lens L11, the described ten lens L10 is that a piece of biconvex positive light coke is saturating
Mirror, the tenth a piece of lens L11 are a piece of convex-concave negative-power lenses, the described ten lens L10 and described tenth a piece of
Lens L11 is abutted by washer.The focusing group 4 is equipped with from the tactic 12nd lens L12 in object space side, the
Ten three pieces lens L13, the 14th lens L14 and the 15th lens L15, the 12nd lens L12 is the positive light of biconvex
Power lenses, the tenth three pieces lens L13 is concave-convex negative-power lenses, the 12nd lens L12 and the described tenth
Three pieces lens L13 is by optics glue bond, and the 14th lens L14 is convex-concave positive power lens, the tenth three pieces
It is abutted between lens L13 and the 14th lens L14 by washer, the 15th lens L15 is the positive light focus of biconvex
Lens are spent, are abutted between the 14th lens L14 and the 15th lens L15 by washer.Further, institute
It is glass aspheric lenses to state six-element lens L6, and the described ten lens L10 is glass aspheric lenses, described 15th
Lens L15 is glass aspheric lenses.
More specifically, first lens L1 of the utility model is to the 15th corresponding mirror of lens L15
Piece focal length, the range such as table 1 of refractive index：
Table 1
Wherein, f1-f15 corresponds first lens L1 to the focal length of the 15th lens L15, n1-
N15 corresponds the refractive index of first lens L1 to the 15th lens L15.
According to following aspherical equation formula：
Wherein, C=1/R, k are aspherical circular cone coefficient, and R represents the radius of curvature at face type center, and α represents aspherical
The parameter of curved surface.
The physical parameter of first lens L1 to the 15th lens L15 of the utility model refer to table 2：
Table 2
Wherein, the R represents radius of curvature, and D represents center thickness, and nd represents refractive index, and k values represent circular cone coefficient.PL
Represent plane, "-" represents that direction is negative.
Meet the aspherical parameter such as table 3 of above-mentioned aspherical equation formula：
Table 3
The utility model uses 13 groups of 15 all-glass optical textures, wherein with 3 Glass aspheric eyeglasses；Have
4 groups, wherein total focal power of the zoom group 2 is negative, 4 total focal power of the focusing group is just, by changing two groups
Be spaced to realize the function of zoom, focal length zoom ratio is more than 33 times, and field angle variation range is wide, be less than 2.1 degree to 70 degree with
On, while possessing resolution ratio more than 4,000,000 pixels, Aperture Range is F1.4~F4.5.
From the above, it can be seen that the big multiplying power zoom lens of the large aperture of the utility model, by setting four constituent element light
Zoom lens is learned, including preceding group of stability 1, zoom group 2, intermediate group of stability 3 and group 4 is focused on, by adjusting the zoom group 2 and institute
It states the relative position for focusing on group 4 and is arranged to the focal length relationship of the focal length for focusing on group 4 and the zoom group 2 as follows
Relational expression：0.25<∣Bf'/Ff'∣<1.6 so that the utility model is realized under the premise of the volume of camera lens is reduced, and is remained to
Increase field angle variation range, and improve resolution, the utility model can be realized to be used in the environment of -40 DEG C -+80 DEG C
Do not run coke, it is seen that light is confocal with infrared light, it is seen that light imaging definition is in 4,000,000 pixels with first-class technical indicator.
Above disclosed is only the preferred embodiment of the utility model, it is impossible to the right of the utility model is limited 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
It encloses.
Claims (9)
1. the big multiplying power zoom lens of large aperture, includes successively along incident ray：Preceding group of stability, zoom group, intermediate group of stability and poly-
Jiao Qun, which is characterized in that for total focal power of the preceding group of stability for just, total focal power of the intermediate group of stability is described for just
Total focal power of zoom group is negative, and the total focal power for focusing on group is negative, the zoom group and the opposite position for focusing on group
Put adjustable, and the focal length of focal length and the zoom group for focusing on group meets following relationship：
0.25<∣Bf'/Ff'∣<1.6；
Wherein, the Bf' is the focal length of the zoom group, and the Ff' is the focal length for focusing on group.
2. the big multiplying power zoom lens of large aperture as described in claim 1, which is characterized in that the big multiplying power varifocal mirror of entire large aperture
Head is in the focal length of wide-angle side, the entire big multiplying power zoom lens of large aperture in the focal length of telescope end, the coke of the preceding group of stability
Away from and the focal length of the intermediate group of stability meet relationship below：
2.5<∣fq'/fw'∣<14.5；
2.5<∣fz'/fw'∣<14.5；
2.1<∣ft'/fq'∣<10.2；
2.1<∣ft'/fz'∣<10.2；
Wherein, the fq' is the focal length of the preceding group of stability, and the fw' exists for the entire big multiplying power zoom lens of large aperture
The focal length of wide-angle side, the fz' are the focal length of the intermediate group of stability, and the ft' is the entire big multiplying power zoom of large aperture
Camera lens is in the focal length of telescope end.
3. the big multiplying power zoom lens of large aperture as described in claim 1, which is characterized in that the preceding group of stability is equipped with from object space
Tactic first lens in space side, second lens, third piece lens, the 4th lens, the 5th lens；First
Piece lens are convex-concave negative-power lenses, and second lens is biconvex positive power lens, first lens and second lens
By optics glue bond, third piece lens are convex-concave positive power lens, and second lens and third piece lens are tight by washer
It leans on, the 4th lens are convex-concave positive power lens, and third piece lens are abutted with the 4th lens by washer, the 5th lens
It is convex-concave positive power lens, the 4th lens are abutted with the 5th lens by washer.
4. the big multiplying power zoom lens of large aperture as described in claim 1, which is characterized in that the zoom group is equipped with from object space sky
Between the tactic six-element lens in side, the 7th lens, the 8th lens, the 9th lens, six-element lens is convex-concave
Negative-power lenses, the 7th lens are concave-concave negative-power lenses, pass through eyeglass between six-element lens and the 7th lens
Edge is directly born against, and the 8th lens are concave-convex negative-power lenses, and the 7th lens and the 8th lens pass through lens edge
It directly bears against, the 9th lens are biconvex positive power lens, and the 8th lens and the 9th lens are abutted by washer.
5. the big multiplying power zoom lens of large aperture as claimed in claim 1 or 2, which is characterized in that the intermediate group of stability is equipped with
From the lens of object space side the tactic ten, the tenth a piece of lens, the described ten lens are the positive light of a piece of biconvex
Power lenses, the tenth a piece of lens are a piece of convex-concave negative-power lenses, the described ten lens and described tenth a piece of
Lens are abutted by washer.
6. the big multiplying power zoom lens of large aperture as described in claim 1, which is characterized in that the focusing group is equipped with from object space sky
Between tactic 12nd lens in side, the tenth three pieces lens, the 14th lens and the 15th lens, the 12nd
Lens are biconvex positive power lens, and the tenth three pieces lens are concave-convex negative-power lenses, the 12nd lens and the tenth three pieces
For lens by optics glue bond, the 14th lens are convex-concave positive power lens, the tenth three pieces lens and the 14th lens
Between abutted by washer, the 15th lens are biconvex positive power lens, the 14th lens and the 15th lens it
Between abutted by washer.
7. the big multiplying power zoom lens of large aperture as claimed in claim 4, which is characterized in that the six-element lens is that glass is non-
Spherical lens.
8. the big multiplying power zoom lens of large aperture as claimed in claim 5, which is characterized in that the described ten lens are that glass is non-
Spherical lens.
9. the big multiplying power zoom lens of large aperture as claimed in claim 6, which is characterized in that the 15th lens are glass
Non-spherical lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721479428.4U CN207601415U (en) | 2017-11-08 | 2017-11-08 | The big multiplying power zoom lens of large aperture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721479428.4U CN207601415U (en) | 2017-11-08 | 2017-11-08 | The big multiplying power zoom lens of large aperture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207601415U true CN207601415U (en) | 2018-07-10 |
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ID=62758895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721479428.4U Active CN207601415U (en) | 2017-11-08 | 2017-11-08 | The big multiplying power zoom lens of large aperture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207601415U (en) |
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2017
- 2017-11-08 CN CN201721479428.4U patent/CN207601415U/en active Active
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