CN208689253U - A kind of small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens - Google Patents
A kind of small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens Download PDFInfo
- Publication number
- CN208689253U CN208689253U CN201821087825.1U CN201821087825U CN208689253U CN 208689253 U CN208689253 U CN 208689253U CN 201821087825 U CN201821087825 U CN 201821087825U CN 208689253 U CN208689253 U CN 208689253U
- Authority
- CN
- China
- Prior art keywords
- lens
- lens group
- wide
- large aperture
- small
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Lenses (AREA)
Abstract
The utility model provides a kind of small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens, the compensation lens group with negative power including being arranged successively along optical axis from object space to image space, the fixed lens group with positive light coke and the Zoom lens group with positive light coke, when focusing, fixed lens group position is constant, and simultaneous selection is focused by mobile complementary lens group and Zoom lens group；The compensation lens group and Zoom lens group meet following conditional: ∣ < 1.87 0.35 < ∣ Ff'/Bf', wherein Ff' is the focal length for compensating lens group, and Bf' is the focal length of Zoom lens group.The lens construction effectively reduces the volume of camera lens, improves the multiplying power and relative aperture of camera lens, camera lens is made to have higher resolution ratio at the same time.
Description
Technical field
The utility model relates to lens technology field, more particularly to a kind of small-sized big target surface ultra-large aperture starlight grade 4K are wide
Angle zoom lens.
Background technique
4K video camera gradually rises in security industry in recent years, brings by the pixel 4K video camera of superelevation more abundant
Monitoring details.However presently 4K lens aperture is not usually very big, 4K zoom lens usually only F1.8 or so
Maximum ring.Therefore the Zoom camera of 4K rank also needs at present plus near-infrared LED light compensating lamp is to improve under poor light condition
Brightness of image.And picture has also accordingly become black and white screen, to be lost a large amount of monitoring details.In safety-security area other one
The concept of a important starlight grade is gradually rooted in the hearts of the people, and the mode of colored night black and white compares with traditional monitor camera daytime,
Day and night full-color picture brings completely different effect to safety monitoring for it.But the hardware foundation of starlight grade camera is necessary
Highly sensitive starlight grade imager chip is relied on, with high-aperture optical camera lens.If the two concepts merge with starlight grade by 4K
Get up, will be a kind of revolutionary breakthrough.The big target surface that the 4K imager chip of mainstream is 1/1.8 " at present, by bigger unit
Elemental area makes the concept of " starlight grade 4K " become possibility.
Wide-angle zoom lens can monitor larger range of target since the visual field is broad, but the visual angle bring of super large
Depending on being difficult to the off-axis aberration corrected, the 4K wide-angle zoom lens camera lens difficulty of big image planes ultra-large aperture will be promoted at double, simultaneously
More excellent effect will be brought to video monitoring.Traditional wide-angle zoom lens majority uses two constituent element optical systems, this
The advantages of kind structure is that structure is simple, requires to be used widely in little optical system in previous multiplying power and relative aperture,
The preferable result of image quality can generally also be obtained.But wide-aperture optical system can not be using upper its relatively simple structure
Balance is obtained in multiplying power, relative aperture, image quality and volume.
Summary of the invention
The utility model provides a kind of small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens, overcomes existing skill
Deficiency in art improves the multiplying power and relative aperture of camera lens, while resolution ratio with higher.
In order to solve the above-mentioned technical problem, technical solution adopted in the utility model are as follows:
A kind of small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens, including along optical axis from object space to image space successively
The compensation lens group with negative power, the fixed lens group with positive light coke and the zoom with positive light coke arranged is saturating
Microscope group, when focusing, fixed lens group position is constant, and simultaneous selection is adjusted by mobile complementary lens group and Zoom lens group
It is burnt；The compensation lens group and Zoom lens group meet following conditional:
0.35<∣Ff'/Bf'∣<1.87；
Wherein, Ff' is the focal length for compensating lens group, and Bf' is the focal length of Zoom lens group；
The compensation lens group include the first lens with negative power being arranged successively along optical axis from object space to image space,
The second lens with negative power and the third lens with positive light coke.
Further, the fixed lens group and entire camera lens meet following conditional:
4<∣Gf'/fw∣<20；
1.5<∣Gf'/ft∣<12.4；
Wherein, Gf' is the focal length of fixed lens group, and fw is that entire camera lens is in the focal length size of focal length most in short-term；Ft is
Entire lens focus is in focal length size when longest.
Further, the fixed lens group includes the 4th lens with positive light coke.
Further, the Zoom lens group includes being arranged successively from object space to image space along optical axis with positive light coke
5th lens, the 6th lens with negative power, the 7th lens with positive light coke, the with positive light coke the 8th are thoroughly
Mirror, the 9th lens, the tenth lens with negative power and the 11st lens with positive light coke with negative power.
Further, first lens to the 11st lens meet following conditional respectively:
| F1=-16~-6 | N1=1.6-1.95 |
| F2=-26.7~-8.9 | N2=1.43-1.85 |
| F3=12.3~45.5 | N3=1.7-2.15 |
| F4=18.1~75.5 | N4=1.43-1.89 |
| F5=8.1~36.2 | N5=1.43-1.75 |
| F6=-24.5~-6.3 | N6=1.5-1.85 |
| F7=5.2~20.6 | N7=1.43-1.7 |
| F8=3.1~11.9 | N8=1.7-2.15 |
| F9=-9.5~-2.3 | N9=1.6-1.95 |
| F10=-21.4~-5.2 | N10=1.5-1.9 |
| F11=3.4~15.3 | N11=1.5-1.9 |
Wherein, f1 to f11 has respectively represented the focal length of lens of the first lens to the 11st lens in order；N1 to n11 according to
Sequence has respectively represented the refractive index of the first lens to the 11st lens.
Preferably, the 6th lens and the 7th lens gluing form the first balsaming lens, the 8th lens and the 9th
Lens gluing forms the second balsaming lens, and the tenth lens and the 11st lens gluing form third balsaming lens.
Preferably, the 4th lens are spherical lens or non-spherical lens, and the 5th lens are non-spherical lens, institute
It is all respectively spherical lens that the first lens, which are stated, to the third lens, and the 6th lens to the 11st lens are all saturating for spherical surface respectively
Mirror.Aspherical lens program for correcting phase difference ability with higher, can be further improved the clarity of camera lens.
Preferably, first lens are meniscus or plano-concave lens, and second lens are biconcave lens, described the
Three lens are meniscus or biconvex lens, and the 4th lens are meniscus, concave-convex lens, biconvex lens, plano-convex lens
One of with convex plano lens, the 5th lens are biconvex lens, the object side surface of the 6th lens be concave surface, convex surface and
One of plane, image interface are concave surface；7th lens are biconvex lens, and the 8th lens are biconvex lens,
9th lens are biconcave lens；The object side surface of tenth lens is one of concave surface, convex surface and plane, image space
Surface is concave surface；11st lens are biconvex lens.
Preferably, diaphragm is provided between the 4th lens and the 5th lens, the 4th lens are that plastics spherical surface is saturating
One kind of mirror, plastic aspheric lens, glass spheric glass and glass aspheric lenses.
A kind of large aperture 4K wide-angle tight shot of the utility model, by using three constituent elements, 9 glass spheric glasses add
The optical texture of upper 2 aspherical lens, can effectively reduce the volume of camera lens, improve the multiplying power and relative aperture of camera lens,
Camera lens is made to have higher resolution ratio at the same time.Allow camera lens at -40 DEG C -+80 DEG C by reasonably combined eyeglass
Using coke is not run under environment, visible light can also be reached and infrared light is confocal and imaging definition is more than 8,000,000 pixels, most
Large aperture reaches F1.0.
Detailed description of the invention
Fig. 1 is a kind of structural representation of small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens of the utility model
Figure.
Specific embodiment
With reference to the accompanying drawing, the embodiments of the present invention is specifically illustrated, attached drawing is only for reference and illustrates use, not structure
The limitation of pairs of the utility model patent protection scope.
As shown in Figure 1, a kind of small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens, including along optical axis from object space
The compensation lens group with negative power that is arranged successively to image space, the fixed lens group with positive light coke and there is positive light focus
The Zoom lens group of degree, when focusing, fixed lens group position is constant, and simultaneous selection passes through mobile complementary lens group and zoom is saturating
Microscope group is focused；The compensation lens group and Zoom lens group meet following conditional:
0.35<∣Ff'/Bf'∣<1.87；
Wherein, Ff' is the focal length for compensating lens group, and Bf' is the focal length of Zoom lens group.
In the present embodiment, the compensation lens group includes being arranged successively from object space to image space along optical axis with negative power
The first lens 1, the second lens 2 with negative power and the third lens 3 with positive light coke.
The fixed lens group and entire camera lens meet following conditional:
4<∣Gf'/fw∣<20；
1.5<∣Gf'/ft∣<12.4；
Wherein, Gf' is the focal length of fixed lens group, and fw is that entire camera lens is in the focal length size of focal length most in short-term；Ft is
Entire lens focus is in focal length size when longest.
In the present embodiment, the compensation lens group includes being arranged successively from object space to image space along optical axis with negative power
The first lens 1, the second lens 2 with negative power and the third lens 3 with positive light coke.
The fixed lens group includes the 4th lens 4 with positive light coke.
The Zoom lens group includes the 5th lens with positive light coke being arranged successively along optical axis from object space to image space
5, the 6th lens 6 with negative power, the 7th lens 7 with positive light coke, the 8th lens 8 with positive light coke, tool
There are the 9th lens 9, the tenth lens 10 with negative power and the 11st lens 11 with positive light coke of negative power.
As further limiting for the present embodiment, first lens to the 11st lens meet following conditional respectively:
| F1=-16~-6 | N1=1.6-1.95 |
| F2=-26.7~-8.9 | N2=1.43-1.85 |
| F3=12.3~45.5 | N3=1.7-2.15 |
| F4=18.1~75.5 | N4=1.43-1.89 |
| F5=8.1~36.2 | N5=1.43-1.75 |
| F6=-24.5~-6.3 | N6=1.5-1.85 |
| F7=5.2~20.6 | N7=1.43-1.7 |
| F8=3.1~11.9 | N8=1.7-2.15 |
| F9=-9.5~-2.3 | N9=1.6-1.95 |
| F10=-21.4~-5.2 | N10=1.5-1.9 |
| F11=3.4~15.3 | N11=1.5-1.9 |
Wherein, f1 to f11 has respectively represented the focal length of lens of the first lens to the 11st lens in order；N1 to n11 according to
Sequence has respectively represented the refractive index of the first lens to the 11st lens, and the "-" number before focal length numerical value is represented into the virtual image.
In the present embodiment, the 6th lens 6 and the first balsaming lens of glued formation of the 7th lens 7, the 8th lens 8
With the second balsaming lens of glued formation of the 9th lens 9, the tenth lens 10 and the glued formation third of the 11st lens 11 are glued
Lens.
In the present embodiment, first lens 1 are meniscus or plano-concave lens, and second lens 2 are biconcave lens,
The third lens 3 be meniscus or biconvex lens, the 4th lens 4 be meniscus, concave-convex lens, biconvex lens,
One of plano-convex lens and convex plano lens, the 5th lens 5 are biconvex lens, and the object side surface of the 6th lens 6 is
One of concave surface, convex surface and plane, image interface are concave surface；7th lens 7 are biconvex lens, the 8th lens
8 be biconvex lens, and the 9th lens 9 are biconcave lens；The object side surface of tenth lens 10 is concave surface, convex surface and plane
One of, image interface is concave surface；11st lens 11 are biconvex lens.
All lens can choose glass lens, also can choose plastic lens.In the present embodiment, the 4th lens 4 and
Diaphragm 45 is provided between five lens 5, the 4th lens are plastics spherical lens, plastic aspheric lens, glass spherical mirror
One kind of piece and glass aspheric lenses, in the present embodiment, the 4th lens have selected plastic lens, remaining lens has selected glass
Lens.
In the present embodiment, the 5th lens are non-spherical lens, and first lens to the third lens are all ball respectively
Face lens, the 6th lens to the 11st lens are all spherical lens respectively.
Specifically, the 4th lens and the 5th lens are all non-spherical lens, and respective lens mirror shape meets such as lower section
Formula:
Wherein, r represents radial coordinate, and unit is identical as length of lens unit, and c is song corresponding to surface central radius
Rate, k are circular cone whose conic coefficient, α1To α8For high order aspheric surface coefficient.
In the present embodiment, the high order aspheric surface coefficient for meeting above-mentioned aspherical equation formula is as follows:
| S7 | S8 | S10 | S11 | |
| α1 | 0 | 0 | 0 | 0 |
| α2 | -1.16E-04 | -1.83E-04 | 1.38E-03 | 3.43E-03 |
| α3 | -1.84E-04 | -5.16E-04 | -7.12E-04 | -5.33E-03 |
| α4 | 2.61E-05 | 7.16E-05 | 5.28E-04 | 1.36E-04 |
| α5 | -1.53E-06 | -3.15E-06 | -7.68E-05 | 9.11E-06 |
| α6 | -6.31E-08 | 3.22E-07 | 1.70E-07 | -5.74E-06 |
| α7 | 0 | 0 | 0 | 0 |
| α8 | 0 | 0 | 0 | 0 |
In the present embodiment, the optical physics parameter of the first lens to the 11st lens is as follows:
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)；S1 and S2 is the object side surface and image interface of the first lens 1, and S3 and S4 are
The object side surface and image interface of second lens 2, S5 and S6 are the object side surface and image interface of the third lens 3, and diaphragm represents
Plane where diaphragm；S7 and S8 is the object side surface and image interface of the 4th lens 4；S9 and S10 is the object space of the 5th lens 5
Surface and image interface；S11 and S12 is the object side surface and image interface of the 6th lens 6；S13 and S14 is the 7th lens 7
Object side surface and image interface；S15 and S16 is the object side surface and image interface of the 8th lens 8；S17 and S18 is the 9th lens
9 object side surface and image interface；S19 and S20 is the object side surface and image interface of the tenth lens 10；S21 and S22 is the tenth
The object side surface and image interface of one lens 11, S23 are plane where image planes, that is, sensitive chip."-" represents direction before the numerical value of R
It is negative, that is, represents direction (corresponding object side surface is concave surface, and corresponding image interface is then convex surface)." airspace is variable "
It represents in focusing, the distance of an optical surface to another optical surface can change.Meanwhile it is former because forming balsaming lens
The image interface of cause, the 6th lens is overlapped with the object side surface of the 7th lens, image interface and the 9th lens of the 8th lens
Object side surface is overlapped, and the image interface of the tenth lens is overlapped with the object side surface of the 11st lens.
It when assembling camera lens, is born against between the second lens and the third lens using space collar, the 5th lens and the 6th lens
Between born against using space collar, born against between the 7th lens and the 8th lens using space collar, the 9th lens and the tenth lens it
Between using space collar bear against or eyeglass edge bear against.
Above disclosed is only the preferred embodiment of the utility model, and the right of the utility model cannot be limited with this
Protection scope, 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 small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens, which is characterized in that including along optical axis from object space
The compensation lens group with negative power that is arranged successively to image space, the fixed lens group with positive light coke and there is positive light focus
The Zoom lens group of degree, when focusing, fixed lens group position is constant, and simultaneous selection passes through mobile complementary lens group and zoom is saturating
Microscope group is focused；The compensation lens group and Zoom lens group meet following conditional:
0.35<∣Ff'/Bf'∣<1.87；
Wherein, Ff' is the focal length for compensating lens group, and Bf' is the focal length of Zoom lens group；
The compensation lens group includes the first lens with negative power being arranged successively along optical axis from object space to image space, has
Second lens of negative power and the third lens with positive light coke.
2. the small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens of one kind according to claim 1, feature exist
In: the fixed lens group and entire camera lens meet following conditional:
4<∣Gf'/fw∣<20；
1.5<∣Gf'/ft∣<12.4；
Wherein, Gf' is the focal length of fixed lens group, and fw is that entire camera lens is in the focal length size of focal length most in short-term；Ft is entire
Lens focus is in focal length size when longest.
3. the small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens of one kind according to claim 2, feature exist
In: the fixed lens group includes the 4th lens with positive light coke.
4. the small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens of one kind according to claim 3, feature exist
In: the Zoom lens group includes the 5th lens with positive light coke being arranged successively along optical axis from object space to image space, has
6th lens of negative power, the 8th lens with positive light coke, have negative power at the 7th lens with positive light coke
The 9th lens, the tenth lens with negative power and the 11st lens with positive light coke.
5. the small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens of one kind according to claim 4, feature exist
In first lens to the 11st lens meet following conditional respectively:
Wherein, f1 to f11 has respectively represented the focal length of lens of the first lens to the 11st lens in order；N1 to n11 is in order
The refractive index of the first lens to the 11st lens is respectively represented.
6. the small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens of one kind according to claim 4, feature exist
In: the 6th lens and the 7th lens gluing form the first balsaming lens, and the 8th lens are formed with the 9th lens gluing
Second balsaming lens, the tenth lens and the 11st lens gluing form third balsaming lens.
7. the small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens of one kind according to claim 4, feature exist
In: the 4th lens are spherical lens or non-spherical lens, and the 5th lens are non-spherical lens, and first lens are extremely
The third lens are all spherical lens respectively, and the 6th lens to the 11st lens are all spherical lens respectively.
8. the small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens of one kind according to claim 4, feature exist
In: first lens are meniscus or plano-concave lens, and second lens are biconcave lens, and the third lens are convex-concave
Lens or biconvex lens, the 4th lens are in meniscus, concave-convex lens, biconvex lens, plano-convex lens and convex plano lens
One kind, the 5th lens are biconvex lens, and the object side surfaces of the 6th lens is one in concave surface, convex surface and plane
Kind, image interface is concave surface；7th lens are biconvex lens, and the 8th lens are biconvex lens, and the described 9th thoroughly
Mirror is biconcave lens；The object side surface of tenth lens is one of concave surface, convex surface and plane, and image interface is recessed
Face；11st lens are biconvex lens.
9. the small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens of one kind according to claim 4, feature exist
In: diaphragm is provided between the 4th lens and the 5th lens, the 4th lens are plastics spherical lens, plastic aspherical element
One kind of lens, glass spheric glass and glass aspheric lenses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821087825.1U CN208689253U (en) | 2018-07-10 | 2018-07-10 | A kind of small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821087825.1U CN208689253U (en) | 2018-07-10 | 2018-07-10 | A kind of small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208689253U true CN208689253U (en) | 2019-04-02 |
Family
ID=65880122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821087825.1U Active CN208689253U (en) | 2018-07-10 | 2018-07-10 | A kind of small-sized big target surface ultra-large aperture starlight grade 4K wide-angle zoom lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208689253U (en) |
-
2018
- 2018-07-10 CN CN201821087825.1U patent/CN208689253U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107402431B (en) | Image capturing lens, image capturing device and electronic device | |
| CN106597634B (en) | Image capturing lens system, image capturing device and electronic device | |
| CN105278086B (en) | Optical imaging system | |
| CN105372792B (en) | Image capturing optical lens assembly, image capturing device and electronic device | |
| CN105319688B (en) | Optical imaging system | |
| CN105372794B (en) | Optical imaging system | |
| CN105487206B (en) | Optical imaging system | |
| CN105182507B (en) | A kind of wide-angle tight shot | |
| CN107632379B (en) | Small ultra-large aperture starlight level ultra-wide angle zoom lens | |
| CN107102422A (en) | A kind of large aperture ultra-wide angle ultra high-definition zoom lens | |
| CN106291870A (en) | Optical imaging system | |
| CN105425361B (en) | Optical imaging system | |
| CN106154497A (en) | Optical imaging system | |
| CN106291874A (en) | Optical imaging system | |
| CN106199909A (en) | Optical imaging system | |
| CN103676098A (en) | Optical image capturing lens assembly | |
| CN107797227A (en) | Optical imaging system | |
| CN106324798A (en) | Lens system and lens | |
| CN107367828A (en) | A kind of large aperture 4K tight shots | |
| CN107300748A (en) | Optical imaging lens | |
| CN109270665A (en) | Optical imaging lens and electronic equipment | |
| CN109445078A (en) | Bugeye lens | |
| CN107290841A (en) | Optical lens | |
| CN107436479A (en) | Inexpensive large aperture 4MP is without thermalization tight shot | |
| CN207264008U (en) | A kind of large aperture 4K tight shots |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |