CN108519663A - A kind of zoom lens - Google Patents
A kind of zoom lens Download PDFInfo
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- CN108519663A CN108519663A CN201810193931.6A CN201810193931A CN108519663A CN 108519663 A CN108519663 A CN 108519663A CN 201810193931 A CN201810193931 A CN 201810193931A CN 108519663 A CN108519663 A CN 108519663A
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- lens
- lens group
- zoom
- group
- focal length
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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
- G02B15/16—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/177—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a negative front lens or group of lenses
Abstract
The invention discloses a kind of zoom lens, to solve the problems, such as tight shot profit inconvenient for use.Including optical filter and imaging surface, the first lens group being arranged in order from object space to image space, the second lens group and the third lens group；Total focal power of first lens group is negative, and total focal power of the second lens group is that just, total focal power of the third lens group is just, to be moved relative to the second lens group to carry out zoom by the first lens group, the third lens group；The system focal length ft of the focal length fg of lens group, system focal length fw and zoom lens of the zoom lens under short focus state under focal length state, meets relational expression：‑2.39≤fg1/fw≤‑1.99；9.44≤fg2/fw≤11.44；‑1≤fg1/fg3≤‑0.6；2≤ft/fw≤5；Wherein, " " indicates that direction is negative.A kind of zoom lens is provided, is the life of user, security protection or other uses are provided convenience.
Description
Technical field
The present invention relates to optical image technology field, more particularly to a kind of zoom lens.
Background technology
As soon as safety defense monitoring system is by the new industry of people's pay attention to day by day, at present from the point of view of development, using increasingly
Universal, scientific and technological content is higher and higher.The personal safety of every field, property safety needs are protected.With modern high-new skill
The progress of art and the raising of people's prevention awareness, various safety technological guard facilities come into being.General safety monitoring mirror
Head is tight shot, and field angle is constant immutable, can not be used in the monitoring scene of various complexity.
Magazine camera lens is most important component in camera, and the quality of camera lens directly influences the quality of imaging.Generally
Use tight shot in the camera, but tight shot, field angle is constant immutable, user shooting farther out and closer object
When, need zoom.When using tight shot, zoom leans on away user substantially.Tight shot is when shooting image, sometimes not
It is enough sensitive, be not suitable for being likely to occur subject matter such as news photography, the record photography of accident etc..
To sum up, it is necessary to a kind of zoom lens be provided, provided just for the use of user, safety monitoring and other uses
Profit.
Invention content
The embodiment of the invention discloses a kind of zoom lens, to solve tight shot in the prior art profit inconvenient for use
Problem.
In order to achieve the above objectives, described the embodiment of the invention discloses a kind of zoom lens, including optical filter and imaging surface
Zoom lens further includes：The first lens group, the second lens group and the third lens group being arranged in order from object space to image space；
Total focal power of first lens group is negative, and total focal power of second lens group is just that the third is saturating
Total focal power of microscope group be just, by first lens group, the third lens group relative to second lens group move come
Carry out zoom；
Wherein, the focal length fg1 of first lens group, the focal length fg2 of second lens group, the third lens group
Focal length fg3, system focal length fw and zoom lens system under focal length state of the zoom lens under short focus state
Focal length ft, meets relational expression：
-2.39≤fg1/fw≤-1.99；
9.44≤fg2/fw≤11.44；
-1≤fg1/fg3≤-0.6；
2≤ft/fw≤5；Wherein, "-" indicates that direction is negative.
Further, first lens group includes：The first lens for being arranged in order from object space to image space, the second lens,
The third lens and the 4th lens；
First lens are the bent moon glass lens of negative power；In first lens convex surface facing object space；
Second lens and the third lens form balsaming lens group, and the focal power of the balsaming lens group is just；
4th lens be negative power glass lens, the 4th lens towards the surface of object space be concave surface.
Further, the focal length f4 of the 4th lens meets：-4.63≤f4/fw≤-3.83；Wherein, "-" expression side
To being negative.
Further, second lens group includes：5th lens；
5th lens be positive light coke glass lens, the 5th lens towards the surface of object space be convex surface.
Further, the Abbe number Vd5 of the 5th lens meets：Vd5≥80mm.
Further, the third lens group includes：The 6th lens, the 7th lens being arranged in order from object space to image space
Group, the 8th lens, the 9th lens, the tenth lens, the 11st lens, the 12nd lens, the 13rd lens and the 14th lens；
6th lens are positive light coke glass lens；
7th lens and the bent moon glass lens that the 14th lens are negative power；
8th lens, the tenth lens, the 11st lens, the double convex glass lens that the 13rd lens are positive light coke；
9th lens and the concave-concave glass lens that the 12nd lens are negative power；
Wherein, the 6th lens and the 7th lens towards the surface of object space be convex surface；The 14th lens court
It is concave surface to the surface of object space.
Further, curvature of the 7th lens towards the surface of image space and surface of the 8th lens towards object space
The numerical value of radius is identical；
Number of 9th lens towards the surface of image space and the radius of curvature on surface of the tenth lens towards object space
It is worth identical.
Further,
7th lens are with the 8th lens group at glued lens group；
9th lens are with the tenth lens group at glued lens group.
Further,
The Abbe number Vd8 of 8th lens meets：Vd8≥65mm；
The Abbe number Vd10 of tenth lens meets：Vd10≥65mm；
The refractive index nd6 of 6th lens meets：nd6≥1.9；
The refractive index nd11 of 11st lens meets：nd11≥1.9.
Further, it is provided with aperture diaphragm between first lens group and second lens group.
The embodiment of the invention discloses a kind of zoom lens, including optical filter and imaging surface, the zoom lens further includes：
The first lens group, the second lens group and the third lens group being arranged in order from object space to image space；Total light of first lens group
Focal power is negative, and total focal power of second lens group is that just, total focal power of the third lens group is just, to pass through described the
One lens group, the third lens group are moved relative to second lens group to carry out zoom；Wherein, first lens group
The focal length fg3 of focal length fg1, the focal length fg2 of second lens group, the third lens group, the zoom lens is in short focus shape
The system focal length ft of system focal length fw and the zoom lens under focal length state under state, meets relational expression：-2.39≤fg1/
fw≤-1.99；9.44≤fg2/fw≤11.44；-1≤fg1/fg3≤-0.6；2≤ft/fw≤5；Wherein, "-" indicates direction
It is negative.Since the first lens group and the third lens group in embodiments of the present invention, including in zoom lens are with respect to the second lens
Group is mobile to carry out zoom, and the focal power of the first lens group and the third lens group is just, and to meet above-mentioned formula, is carried
Supplied a kind of big image planes, large aperture, good imaging quality zoom lens, be the life of user, security protection or other using providing
Facility.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of zoom lens that the embodiment of the present invention 1 provides；
Fig. 2 is a kind of zoom lens provided in an embodiment of the present invention；
Fig. 3 is a kind of zoom lens provided in an embodiment of the present invention；
Fig. 4 A are a kind of modulation transfer function curve graph provided in an embodiment of the present invention；
Fig. 4 B are a kind of modulation transfer function curve graph provided in an embodiment of the present invention；
Fig. 5 A are a kind of meridianal curvature of field line chart provided in an embodiment of the present invention；
Fig. 5 B are a kind of meridianal curvature of field line chart provided in an embodiment of the present invention；
Fig. 6 A are a kind of axial chromatic aberration curve graph provided in an embodiment of the present invention；
Fig. 6 B are a kind of axial chromatic aberration curve graph provided in an embodiment of the present invention；
Fig. 7 A are a kind of chromatic longitudiinal aberration curve graph provided in an embodiment of the present invention；
Fig. 7 B are a kind of chromatic longitudiinal aberration curve graph provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1：
Fig. 1 is a kind of zoom lens schematic diagram that the embodiment of the present invention 1 provides, which includes optical filter and imaging
Face, the zoom lens include：The first lens group G1, the second lens group G2 and the third lens being arranged in order from object space to image space
Group G3；
Total focal power of first lens group is negative, and total focal power of second lens group is just that the third is saturating
Total focal power of microscope group is that just, first lens group, the third lens group can move to come relative to second lens group
Carry out zoom；
Wherein, the focal length fg1 of first lens group, the focal length fg2 of second lens group, the third lens group
Focal length fg3, system focal length fw and zoom lens system under focal length state of the zoom lens under short focus state
Focal length ft, meets relational expression：
-2.39≤fg1/fw≤-1.99；
9.44≤fg2/fw≤11.44；
-1≤fg1/fg3≤-0.6；
2≤ft/fw≤5；Wherein, "-" indicates that direction is negative.
In embodiments of the present invention, which includes the first lens group being arranged in order from object space to image space,
Two lens groups, the third lens group, optical filter and imaging surface.
The camera lens is zoom lens, can realize zoom by changing the position of lens group, can be by changing the
The one lens group opposite position with the second lens group carries out zoom, can also be opposite with second by changing the third lens group
The position of lens group can also be the position for changing simultaneously the first lens group relatively with the second lens group to carry out zoom, and
Change the third lens group with respect to the position with the second lens group to carry out zoom.It is, the position of the second lens group is constant, the
One lens group can be closer or far from the second lens group closer or far from the second lens group, the third lens group.
Each lens group has its corresponding focal power, referred to as total focal power, in order to normally be imaged, the first lens
Total focal power of group is negative, and total focal power of second lens group is that just, total focal power of the third lens group is just.
Zoom lens can change between focal length state and short focus state, as shown in Figure 1, the zoom lens is in short focus
State, the first lens group and the third lens group are far from the second lens group.
When the zoom lens is in focal length state, the first lens group and the third lens group are close to the second lens group.
Each lens group in the zoom lens has its corresponding focal length, in order to provide a kind of big image planes, large aperture, imaging
High-quality zoom lens, the focal length fg1 of first lens group, the focal length fg2 of second lens group, the third lens
The focal length fg3 of group, meets following relationship：
-2.39≤fg1/fw≤-1.99；
9.44≤fg2/fw≤11.44；
-1≤fg1/fg3≤-0.6；Wherein "-" indicates that direction is negative.Fg1 indicates that the focal length of the first lens group, fg2 indicate
Focal length, the fg3 of second lens group indicate that the focal length of the third lens group, fw indicate that system of the zoom lens under short focus state is burnt
Away from.
Zoom lens has its corresponding system focal length under focal length state, has its corresponding system burnt under short focus state
Away from.Specifically meet following relationship：2≤ft/fw≤5；Fw indicates that system focal length of the zoom lens under short focus state, ft indicate
System focal length of the zoom lens under focal length state.
Since the first lens group and the third lens group that in embodiments of the present invention, include in zoom lens are saturating with respect to second
Microscope group moves to carry out zoom, and the focal power of the first lens group and the third lens group is the just focal power of the second lens group
Be negative, and meet above-mentioned formula, provide a kind of big image planes, large aperture, good imaging quality zoom lens, be user's
Life, security protection or other uses are provided convenience.
Embodiment 2：
On the basis of the above embodiments, in embodiments of the present invention, as shown in Fig. 2, the first lens group G1 includes
Four lens, the first lens L1 being specially arranged in order from object space to image space, the second lens L2, the third lens L3 and the 4th are saturating
Mirror L4；
First lens are the bent moon glass lens of negative power；In first lens convex surface facing object space；
Second lens and the third lens form balsaming lens group, and the focal power of the balsaming lens group is just；
4th lens be negative power glass lens, the 4th lens towards the surface of object space be concave surface.
It is double convex glass lens that in second lens and the third lens can be one, another is concave-concave glass lens；Or,
It can also be that one is plano-convex glass lens in second lens and the third lens, another is plano-concave glass lens.Thoroughly second
Mirror and the third lens can form balsaming lens group, and the focal power of the balsaming lens group be just under the premise of, the second lens and
Which of the third lens are facing towards object space, which is facing towards image space, it is believed that and it is known to those skilled in the art, herein no longer
It is repeated.
As shown in Fig. 2, the second lens are biconcave lens, the third lens are biconvex lens.
4th power of lens is negative, and the 4th lens can be concave-concave negative-power lenses, can also be that plano-concave bears light
Focal power glass lens, concave surface in the 4th lens is towards object space.
As shown in Fig. 2, the 4th lens are biconcave lens.
The focal length f4 of 4th lens meets：-4.63≤f4/fw≤-3.83；Wherein "-" indicates that direction is negative.
Because the 4th lens are biconcave lens or plano-concave lens；And concave surface effectively reduces the first lens towards object space
The volume of group, and then reduce the volume of entire zoom lens.
Embodiment 3：
On the basis of the various embodiments described above, in embodiments of the present invention, the second lens group G2 includes：5th lens
L5；5th lens be positive light coke glass lens, the 5th lens towards the surface of object space be convex surface.
The Abbe number Vd5 of 5th lens meets：Vd5≥80mm.
5th lens can be biconvex lens, can be meniscus lens, can also be planoconvex spotlight.It is convex in 5th lens
Facing towards object space, in fig. 2, the 5th lens are biconvex lens.Meniscus lens can be understood as concave-convex lens.
Embodiment 4：
On the basis of the various embodiments described above, in embodiments of the present invention, as shown in Fig. 2, the third lens group G3 packets
It includes：The 6th lens L6 that is arranged in order from object space to image space, the 7th lens group L7, the 8th lens L8, the 9th lens L9, the tenth are thoroughly
Mirror L10, the 11st lens L11, the 12nd lens L12, the 13rd lens L13 and the 14th lens L14；
6th lens are positive light coke glass lens；
7th lens and the bent moon glass lens that the 14th lens are negative power；
8th lens, the tenth lens, the 11st lens, the double convex glass lens that the 13rd lens are positive light coke；
9th lens and the concave-concave glass lens that the 12nd lens are negative power；
Wherein, the 6th lens and the 7th lens towards the surface of object space be convex surface；The 14th lens court
It is concave surface to the surface of object space.
In embodiments of the present invention, the third lens group G3 includes nine lens, is arranged in order from object space to image space such as Fig. 2 institutes
The 6th lens L6 to the 14th lens L14 shown.
6th lens L6 is positive light coke glass lens, and the 6th lens can be meniscus lens, can be recessed plano lens, can
To be biconvex lens, the 6th lens convex surface facing object space；
7th lens L7 is bent moon negative power glass lens, the 7th lens convex surface facing object space；
8th lens L8 is biconvex positive light coke glass lens；
9th lens L9 is concave-concave negative power glass lens；
Tenth lens L10 is biconvex positive light coke glass lens；
11st lens L11 is biconvex positive light coke glass lens；
12nd lens L12 is concave-concave negative power glass lens；
13rd lens L13 is biconvex positive light coke glass lens；
14th lens L14 is bent moon negative power glass lens, and the concave surfaces of the 14th lens is towards object space.
In order to reduce the volume of zoom lens, and make image quality more excellent, the 7th lens towards the surface of image space with
The numerical value of 8th lens towards the radius of curvature on the surface of object space is identical；
9th lens are identical as the numerical value of the tenth lens towards the radius of curvature on the surface of object space towards the surface of image space.
Further, the 7th lens and the 8th lens group are at glued lens group；9th lens with it is described
Tenth lens group is at glued lens group.
Each lens have its corresponding Abbe number, are indicated with Vd, and the Abbe number Vd8 of the 8th lens meets：Vd8≥
65mm；The Abbe number Vd10 of tenth lens meets：Vd10≥65mm.
Each lens have its corresponding refractive index, are indicated with nd, and the refractive index nd6 of the 6th lens meets：nd6≥1.9；
The refractive index nd11 of 11st lens meets：nd11≥1.9.
Embodiment 5：
In order to control enter the zoom lens beam size and position, as shown in Fig. 2, first lens group with it is described
Aperture diaphragm (STOP) is provided between second lens group.Namely aperture diaphragm is provided between the 4th lens and the 5th lens.
To sum up, zoom lens shown in Fig. 2 includes 14 lens, realizes a kind of super large image planes, large aperture, high-resolution
Zoom lens, the Fig. 2 are schematic diagram of the zoom lens under short focus state, and Fig. 3 is the zoom lens under focal length state
Schematic diagram.
Embodiment 6：
On the basis of the various embodiments described above, in embodiments of the present invention, as shown in Fig. 2, each lens have its correspondence
Two surfaces, it may be possible to concave surface may be convex surface, it is also possible to plane.Specifically,
First lens L1 includes towards the convex surface 1 of object space and towards the concave surface 2 of image space；
Second lens L2 includes towards the concave surface 3 of object space and towards the concave surface 4 of image space；
The third lens L3 includes towards the convex surface 5 of object space and towards the convex surface 6 of image space；
4th lens L4 includes towards the concave surface 7 of object space and towards the concave surface 8 of image space；
5th lens L5 includes towards the convex surface 9 of object space and towards the convex surface 10 of image space；Convex surface 9 is aperture diaphragm (STOP)
Corresponding surface；
6th lens L6 includes towards the convex surface 11 of object space and towards the concave surface 12 of image space；
7th lens L7 includes towards the convex surface 13 of object space and towards the concave surface 14 of image space；
8th lens L8 includes towards the convex surface 15 of object space and towards the convex surface 16 of image space；
9th lens L9 includes towards the concave surface 17 of object space and towards the concave surface 18 of image space；
Tenth lens L10 includes towards the convex surface 19 of object space and towards the convex surface 20 of image space；
11st lens L11 includes towards the convex surface 21 of object space and towards the convex surface 22 of image space；
12nd lens L12 includes towards the concave surface 23 of object space and towards the concave surface 24 of image space；
13rd lens L13 includes towards the convex surface 25 of object space and towards the convex surface 26 of image space；
14th lens L14 includes towards the concave surface 27 of object space and towards the convex surface 28 of image space；
Optical filter includes towards the surface 29 of object space and towards the surface 30 of image space.
There are its corresponding radius of curvature R adius, the distance of the central point on two neighboring surface in each surface of each lens
Referred to as center thickness Thickness, in addition to the focal length f of each lens of the various embodiments described above description, refractive index nd, Abbe constant
Vd, other lens also have its corresponding various parameters information, i.e. radius of curvature R, Current surface to adjacent next surface
Center thickness Tc refractive index nd, Abbe constant Vd information.Table 1 specific as follows：
Table 1
W in above-mentioned table 1 indicates that short focus state, T indicate focal length state.
As shown in table 1, the "-" in radius of curvature indicates that radius of curvature direction is negative, and the "-" in focal length indicates focal length
Direction is negative, and by taking the first lens as an example, in table 1, the refractive index of the first lens is 1.804, Abbe constant 46.503, first
The center thickness on surface 1 to the surface 2 of lens is 1.82mm, and for the curvature half on surface 1 (convex surface) through being 119.605, curved surface 2 is (recessed
Face) radius of curvature be 25.203.
Under short focus state, surface 8 (concave surface) to the surface towards object space of the 5th lens towards image space of the 4th lens
The center thickness on 9 (convex surfaces) is 35.28mm；Under focal length state, the surface 8 (concave surface) towards image space of the 4th lens to the 5th
The center thickness on the surface 9 (convex surface) towards object space of lens is 3.4mm.
The corresponding parameter of other lens can be found in table 1, no longer be repeated herein.
According to the description above, the optics overall length TTL of the zoom lens：154.9mm；
The system focal length fw of the zoom lens is 12mm under short focus state；The system of the zoom lens under focal length state
Focal length ft is 36mm；Namely the system focal length of the zoom lens is between 12mm-36mm.
The field angle of the zoom lens is 110.7 ° under short focus state, the field angle of the zoom lens under focal length state
It is 36.5 °；Namely the field angle of the zoom lens is between 110.7 ° to 36.5 °.
The aperture (F/#) of the zoom lens is 1.5 under short focus state, under focal length state, the aperture of the zoom lens
For the 2.8 namely zoom lens aperture between 1.5 to 2.8；
The camera lens image planes size of the zoom lens：4/3〞.
Detailed zoom lens analysis is carried out below by embodiment, is further described the zoom that the present embodiment is provided
Camera lens.
Modulation transfer function (Modulation Transfer Function, MTF) is more accurate, intuitive and common use
Come evaluate zoom lens image quality mode, curve is higher, more smooth, shows that the image quality of camera lens is better, to each
Kind aberration is such as：Spherical aberration, coma, astigmatism, the curvature of field, axial chromatic aberration, chromatic longitudiinal aberration etc. have carried out good correction.
As shown in Figure 4 A, bent in the modulation transfer function (MTF) of visible light wave range for the zoom lens in short focus state
Line chart.From in Fig. 4 A it is found that the MTF curve figure of the visible light part of the zoom lens under the short focus state is smoother, collection
In, and full filed (half image height Y '=11mm) MTF average values reach 0.65 or more.
As shown in Figure 4 B, bent in the modulation transfer function (MTF) of visible light wave range for the zoom lens in focal length state
Line chart.From in Fig. 4 B it is found that the MTF curve figure of the visible light part of the zoom lens under the focal length state is smoother, collection
In, and full filed (half image height Y '=11mm) MTF average values reach 0.6 or more.
It can be seen that zoom lens provided in an embodiment of the present invention, can reach very high resolution ratio, meet 4/3 inch 12,000,000
The imaging requirements of pixel camera machine.
The corresponding curvature of field figure of zoom lens visible light part is made of three curve T and three curve S；Wherein, three songs
Line T indicates the aberration of the corresponding meridional beam (Tangential Rays) of three kinds of wavelength (486nm, 587nm and 656nm) respectively,
Three curve S indicate the corresponding sagittal beam (Sagittial Rays) of three kinds of wavelength (486nm, 587nm and 656nm) respectively
Aberration, meridianal curvature of field value and Sagittal field curvature value are smaller, illustrate that image quality is better.
As shown in Figure 5A, be in the meridianal curvature of field value control of the zoom lens under short focus state -0.038~
Within the scope of 0.075mm, Sagittal field curvature value controls within -0.01~0.075mm ranges.
As shown in Figure 5 B, the meridianal curvature of field value for the zoom lens being under focal length state is controlled in 0.03~0.09mm models
In enclosing, Sagittal field curvature value controls within -0.015~0.09mm ranges.
The corresponding axial chromatic aberration figure of zoom lens visible light part, curve changes near y-axis, closer to y-axis, illustrates to become
Zoom lens image quality is better.
As shown in Figure 6A, the axial chromatic aberration of the zoom lens controls between -0.02~+0.07mm under short focus state；
As shown in Figure 6B, the axial chromatic aberration of the zoom lens controls between -0.08~+0.09mm under focal length state.
The corresponding chromatic longitudiinal aberration figure of zoom lens visible light part, curve illustrate zoom lens image quality closer to y-axis
Better.
As shown in Figure 7 A, under short focus state the zoom lens chromatic longitudiinal aberration control -0.0017~+0.0044mm it
Between；
As shown in Figure 7 B, under focal length state the zoom lens chromatic longitudiinal aberration control -0.0015~+0.0034mm it
Between.
In conclusion an embodiment of the present invention provides a kind of super large image planes large aperture zoom lens, using 14 specific knots
It is configured the optical lens of shape, and is arranged in order from object side to image side according to particular order, and passes through the light of each optical lens
The distribution of focal power, while using being adapted optical glass material so that the structure type of zoom lens, the refractive index of lens, Ah
The parameters such as shellfish coefficient are matched with image-forming condition, and then make spherical aberration, coma, astigmatism, the curvature of field, chromatic longitudiinal aberration, the axial direction of zoom lens
Aberration is corrected well；To reach under the premise of image planes bigger, while meeting large aperture, high-resolution, Jin Ershi
The now more preferably low imaging performance according under environment；And the maximum length of preferable control system so that properties of product and shape
Size is matched well；It can be widely applied to protection and monitor field, and other fields.
For systems/devices embodiment, since it is substantially similar to zoom lens embodiment, so the comparison of description
Simply, related place illustrates referring to the part of zoom lens embodiment.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Either an operation distinguishes body with another entity or another operation, without necessarily requiring or implying these entities
Or there are any actual relationship or orders between operation.
It should be understood by those skilled in the art that, embodiments herein can be provided as zoom lens, system or computer
Program product.Therefore, complete hardware embodiment, complete Application Example or connected applications and hardware aspect can be used in the application
Embodiment form.Moreover, the application can be used in one or more wherein include computer usable program code meter
The computer journey implemented in calculation machine usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of sequence product.
The application is with reference to according to the zoom lens of the embodiment of the present application, equipment (system) and computer program product
Flowchart and/or the block diagram describes.It should be understood that can be realized by computer program instructions every in flowchart and/or the block diagram
The combination of flow and/or box in one flow and/or box and flowchart and/or the block diagram.These computers can be provided
Processor of the program instruction to all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices
To generate a machine so that the instruction executed by computer or the processor of other programmable data processing devices generates use
In the dress for realizing the function of being specified in one flow of flow chart or multiple flows and/or one box of block diagram or multiple boxes
It sets.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although the preferred embodiment of the application has been described, created once a person skilled in the art knows basic
Property concept, then additional changes and modifications can be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the application range.
Obviously, those skilled in the art can carry out the application essence of the various modification and variations without departing from the application
God and range.In this way, if these modifications and variations of the application belong to the range of the application claim and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (10)
1. a kind of zoom lens, including optical filter and imaging surface, which is characterized in that the zoom lens further includes：From object space to
The first lens group, the second lens group and the third lens group that image space is arranged in order；
Total focal power of first lens group is negative, and total focal power of second lens group is the just the third lens group
Total focal power be just, to move and carry out relative to second lens group by first lens group, the third lens group
Zoom；
Wherein, the focal length of the focal length fg1 of first lens group, the focal length fg2 of second lens group, the third lens group
Fg3, system focal length fw and zoom lens system focal length under focal length state of the zoom lens under short focus state
Ft meets relational expression：
-2.39≤fg1/fw≤-1.99；
9.44≤fg2/fw≤11.44；
-1≤fg1/fg3≤-0.6；
2≤ft/fw≤5；Wherein, "-" indicates that direction is negative.
2. zoom lens as described in claim 1, which is characterized in that first lens group includes：From object space to image space according to
The first lens, the second lens, the third lens and the 4th lens of secondary arrangement；
First lens are the bent moon glass lens of negative power；In first lens convex surface facing object space；
Second lens and the third lens form balsaming lens group, and the focal power of the balsaming lens group is just；
4th lens be negative power glass lens, the 4th lens towards the surface of object space be concave surface.
3. zoom lens as claimed in claim 2, which is characterized in that the focal length f4 of the 4th lens meets：-4.63≤
f4/fw≤-3.83；Wherein, "-" indicates that direction is negative.
4. zoom lens as described in claim 1, which is characterized in that second lens group includes：5th lens；
5th lens be positive light coke glass lens, the 5th lens towards the surface of object space be convex surface.
5. zoom lens as claimed in claim 4, which is characterized in that the Abbe number Vd5 of the 5th lens meets：Vd5≥
80mm。
6. zoom lens as described in claim 1, which is characterized in that the third lens group includes：From object space to image space according to
6th lens of secondary arrangement, the 7th lens group, the 8th lens, the 9th lens, the tenth lens, the 11st lens, the 12nd lens,
13rd lens and the 14th lens；
6th lens are positive light coke glass lens；
7th lens and the bent moon glass lens that the 14th lens are negative power；
8th lens, the tenth lens, the 11st lens, the double convex glass lens that the 13rd lens are positive light coke；
9th lens and the concave-concave glass lens that the 12nd lens are negative power；
Wherein, the 6th lens and the 7th lens towards the surface of object space be convex surface；14th lens are towards object
The surface of side is concave surface.
7. zoom lens as claimed in claim 6, which is characterized in that the 7th lens are towards the surface of image space and described the
The numerical value of eight lens towards the radius of curvature on the surface of object space is identical；
The numerical value phase of the radius of curvature on surface of the 9th lens towards the surface of image space with the tenth lens towards object space
Together.
8. zoom lens as claimed in claim 7, which is characterized in that
7th lens are with the 8th lens group at glued lens group；
9th lens are with the tenth lens group at glued lens group.
9. zoom lens as claimed in claim 6, which is characterized in that
The Abbe number Vd8 of 8th lens meets：Vd8≥65mm；
The Abbe number Vd10 of tenth lens meets：Vd10≥65mm；
The refractive index nd6 of 6th lens meets：nd6≥1.9；
The refractive index nd11 of 11st lens meets：nd11≥1.9.
10. zoom lens as described in claim 1, which is characterized in that first lens group and second lens group it
Between be provided with aperture diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810193931.6A CN108519663B (en) | 2018-03-09 | 2018-03-09 | Zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810193931.6A CN108519663B (en) | 2018-03-09 | 2018-03-09 | Zoom lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108519663A true CN108519663A (en) | 2018-09-11 |
| CN108519663B CN108519663B (en) | 2020-05-26 |
Family
ID=63432825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810193931.6A Active CN108519663B (en) | 2018-03-09 | 2018-03-09 | Zoom lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108519663B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109324389A (en) * | 2018-10-31 | 2019-02-12 | 广州博冠光电科技股份有限公司 | A kind of wide-angle photographic lens |
| CN111208620A (en) * | 2020-03-19 | 2020-05-29 | 北华航天工业学院 | Zoom lens for visual inspection |
| CN114994889A (en) * | 2022-08-02 | 2022-09-02 | 浙江大华技术股份有限公司 | Lens and camera device |
| CN116736494A (en) * | 2023-08-14 | 2023-09-12 | 武汉高明兰光电科技有限公司 | Low-light night vision lens |
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| CN101178474A (en) * | 2006-11-06 | 2008-05-14 | 精工爱普生株式会社 | Zoom lens and projector |
| US20130201394A1 (en) * | 2009-02-18 | 2013-08-08 | Sony Corporation | Zoom lens and image pickup apparatus |
| JP2013178300A (en) * | 2012-02-28 | 2013-09-09 | Nikon Corp | Zoom lens, optical device, and method for manufacturing zoom lens |
| CN104155744A (en) * | 2013-05-14 | 2014-11-19 | 信泰光学(深圳)有限公司 | Zoom lens |
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| CN101178474A (en) * | 2006-11-06 | 2008-05-14 | 精工爱普生株式会社 | Zoom lens and projector |
| US20130201394A1 (en) * | 2009-02-18 | 2013-08-08 | Sony Corporation | Zoom lens and image pickup apparatus |
| JP2013178300A (en) * | 2012-02-28 | 2013-09-09 | Nikon Corp | Zoom lens, optical device, and method for manufacturing zoom lens |
| CN104155744A (en) * | 2013-05-14 | 2014-11-19 | 信泰光学(深圳)有限公司 | Zoom lens |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109324389A (en) * | 2018-10-31 | 2019-02-12 | 广州博冠光电科技股份有限公司 | A kind of wide-angle photographic lens |
| CN111208620A (en) * | 2020-03-19 | 2020-05-29 | 北华航天工业学院 | Zoom lens for visual inspection |
| CN114994889A (en) * | 2022-08-02 | 2022-09-02 | 浙江大华技术股份有限公司 | Lens and camera device |
| CN114994889B (en) * | 2022-08-02 | 2022-10-25 | 浙江大华技术股份有限公司 | Lens and camera device |
| CN116736494A (en) * | 2023-08-14 | 2023-09-12 | 武汉高明兰光电科技有限公司 | Low-light night vision lens |
| CN116736494B (en) * | 2023-08-14 | 2023-11-03 | 武汉高明兰光电科技有限公司 | Low-light night vision lens |
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| Publication number | Publication date |
|---|---|
| CN108519663B (en) | 2020-05-26 |
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