CN110346927A - A kind of zoom lens - Google Patents
A kind of zoom lens Download PDFInfo
- Publication number
- CN110346927A CN110346927A CN201910758508.0A CN201910758508A CN110346927A CN 110346927 A CN110346927 A CN 110346927A CN 201910758508 A CN201910758508 A CN 201910758508A CN 110346927 A CN110346927 A CN 110346927A
- Authority
- CN
- China
- Prior art keywords
- lens
- image side
- object side
- focal length
- refractive index
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims description 38
- 238000003384 imaging method Methods 0.000 claims description 17
- 239000006185 dispersion Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000000007 visual effect Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000004075 alteration Effects 0.000 description 38
- 238000010586 diagram Methods 0.000 description 22
- 230000007613 environmental effect Effects 0.000 description 4
- 230000014509 gene expression Effects 0.000 description 4
- 230000004304 visual acuity Effects 0.000 description 4
- 239000000571 coke Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012634 optical imaging Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Landscapes
- Lenses (AREA)
Abstract
The present invention relates to lens technology fields.The invention discloses a kind of zoom lens, have 12 lens, and the first lens to the 4th lens constitute focusing lens group, and the 5th lens to the 12nd lens constitute Zoom lens group；Diaphragm setting accordingly limits the refractive index and face type of the first lens to the 12nd lens between compensation lens group and Zoom lens group, and at least there are two lens are mutually glued into the 12nd lens for the first lens.The present invention has big light passing, and f-number minimum reaches 1.4, and well, resolution is high, and focal length section span is big, and visual field angular spread is big, and infrared confocal property is good, it is seen that color difference manages preferable advantage when light for the control of transmission function.
Description
Technical field
The invention belongs to lens technology fields, more particularly to a kind of zoom lens.
Background technique
With the continuous progress of technology, in recent years, optical imaging lens are also grown rapidly, and are widely used in intelligence
The every field such as energy mobile phone, tablet computer, video conference, safety monitoring, therefore, the requirement for optical imaging lens is also more next
It is higher.
Zoom lens is can to convert focal length, in a certain range to obtain the field angle of different width, different size
Video and different scenery ranges camera gun.Zoom lens can pass through change in the case where not changing shooting distance
Dynamic focal length changes coverage, therefore use is very convenient.
But applied to the zoom lens of protection and monitor field, there is also following defects at present: light passing is smaller, low to shine characteristic
It is bad, under the bad situation of light, it can not realize clearly color image；Bad to transmission function control, resolution ratio is low, low solution
Analysis, image sharpness is poor, and image is uneven；Focal length section span is small, and visual field angular spread is small, and switching flexibility is poor；Infrared confocal property is not
Good, defocusing amount is big when switching outside visible red, and transfer strip or optical filter is needed to compensate；Infrared confocal camera lens is in visible light
Color difference can be bigger than normal, and color rendition inaccuracy is easy to produce royal purple side phenomenon.Therefore it needs to lead the existing safety monitoring that is applied to
The zoom lens in domain improves, to meet the increasing requirement of consumer.
Summary of the invention
The purpose of the present invention is to provide a kind of zoom lens to solve above-mentioned technical problem.
To achieve the above object, the technical solution adopted by the present invention are as follows: a kind of zoom lens, from object side to image side along a light
Axis successively includes the first lens to the 4th lens, diaphragm and the 5th lens to the 12nd lens；First lens are to the 12nd
Lens respectively include one towards object side and the object side for passing through imaging ray and one towards image side and pass through imaging ray
Image side surface；
First lens have negative refractive index, and the object side of first lens is convex surface, and the image side surface of first lens is recessed
Face；Second lens have negative refractive index, and the object side of second lens is convex surface, and the image side surface of second lens is concave surface；Third
Lens have negative refractive index, and the object side of the third lens is concave surface, and the image side surface of the third lens is concave surface；4th lens tool
Positive refractive index, the object side of the 4th lens are convex surface, and the image side surface of the 4th lens is convex surface；First lens to the 4th thoroughly
Mirror constitutes focusing lens group；
5th lens have positive refractive index, and the object side of the 5th lens is convex surface, and the image side surface of the 5th lens is convex
Face；6th lens have positive refractive index, and the object side of the 6th lens is convex surface, and the image side surface of the 6th lens is convex surface；7th
Lens have negative refractive index, and the object side of the 7th lens is concave surface, and the image side surface of the 7th lens is concave surface；8th lens have just
Refractive index, the object side of the 8th lens are concave surface, and the image side surface of the 8th lens is convex surface；9th lens have positive refractive index,
The object side of 9th lens is convex surface, and the image side surface of the 9th lens is convex surface；Tenth lens have negative refractive index, and the tenth thoroughly
The object side of mirror is convex surface, and the image side surface of the tenth lens is concave surface；11st lens have positive refractive index, the 11st lens
Object side is convex surface, and the image side surface of the 11st lens is convex surface；12nd lens have negative refractive index, the 12nd lens
Object side is concave surface, and the image side surface of the 12nd lens is concave surface；5th lens to the 12nd lens constitute Zoom lens group；
Into the 12nd lens at least there are two lens are mutually glued, which has refractive index for first lens
Lens only have above-mentioned 12.
Further, the image side surface of first lens and the object side of the second lens are mutually glued.
Further, the image side surface of the third lens and the object side of the 4th lens are mutually glued.
Further, which more meets: vd3-vd4 > 28, wherein vd3 and vd4 is respectively the third lens
With the 4th lens d line abbe number.
Further, the object side of the image side surface and the 7th lens of the 6th lens is mutually glued.
Further, which more meets: vd6-vd7 > 30, wherein vd6 and vd7 is respectively the 6th lens
With the 7th lens d line abbe number.
Further, the object side of the image side surface and the 12nd lens of the 11st lens is mutually glued.
Further, which more meets: vd11-vd12 > 30, wherein vd11 and vd12 is respectively the tenth
The abbe number of one lens and the 12nd lens in d line.
Further, which more meets: vd3 > 56, vd6 > 60, vd11 > 60, wherein vd3, vd6 and vd11 points
Not Wei the third lens, the 6th lens and the 11st lens d line abbe number.
Further, which more meets: nd8 > 1.8, nd9 > 1.8, nd12 > 1.8, wherein nd8, nd9 and nd12
The respectively refractive index of the 8th lens, the 9th lens and the 12nd lens in d line.
Further, which more meets: 0.3 < fw/BFLw < 0.4, wherein fw is shortest focal length (i.e. wide-angle position
Focal length when setting), back focal length when BFLw is shortest focal length.
Further, which more meets: 0.7 < ft/BFLt < 0.8, wherein ft is longest focal length (i.e. focal length position
Focal length when setting), back focal length when BFLt is longest focal length.
Advantageous effects of the invention:
Light passing of the present invention is big, low good according to characteristic, under the bad situation of light, can also realize clearly color image.
The present invention manages transmission function, high-resolution, and height parsing, image sharpness is high, image uniform.
Focal length section span of the present invention is big, and visual field angular spread is big, switches strong flexibility.
The present invention is infrared, and confocal property is good, and it is small (being smaller than 3 μm) to switch defocusing amount when outside visible red under wide-angle mode.
Color difference is managed preferably (less than 5.5 μm) when visible light of the present invention, and color reducibility is good.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 be the embodiment of the present invention one be in shortest focal length when structural schematic diagram；
Fig. 2 be the embodiment of the present invention one be in longest focal length when structural schematic diagram；
Fig. 3 is that 0.435-0.656 μm of MTF when being in shortest focal length of the embodiment of the present invention one schemes；
Fig. 4 be the embodiment of the present invention one be in shortest focal length when 0.435-0.656 μm of visible light of defocusing curve figure；
Fig. 5 is that the MTF of infrared 850nm when being in shortest focal length of the embodiment of the present invention one schemes；
Fig. 6 be the embodiment of the present invention one be in shortest focal length when infrared ray 850nm defocusing curve figure；
Fig. 7 be the embodiment of the present invention one be in shortest focal length when lateral chromatic aberration curve graph；
Fig. 8 be the embodiment of the present invention one be in shortest focal length when longitudinal aberration diagram schematic diagram；
Fig. 9 is that 0.435-0.656 μm of MTF when being in longest focal length of the embodiment of the present invention one schemes；
Figure 10 be the embodiment of the present invention one be in longest focal length when 0.435-0.656 μm of visible light of defocusing curve
Figure；
Figure 11 is that the MTF of infrared 850nm when being in longest focal length of the embodiment of the present invention one schemes；
Figure 12 be the embodiment of the present invention one be in longest focal length when infrared ray 850nm defocusing curve figure；
Figure 13 be the embodiment of the present invention one be in longest focal length when lateral chromatic aberration curve graph；
Figure 14 be the embodiment of the present invention one be in longest focal length when longitudinal aberration diagram schematic diagram；
Figure 15 is that 0.435-0.656 μm of MTF when being in shortest focal length of the embodiment of the present invention two schemes；
Figure 16 be the embodiment of the present invention two be in shortest focal length when 0.435-0.656 μm of visible light of defocusing curve
Figure；
Figure 17 is that the MTF of infrared 850nm when being in shortest focal length of the embodiment of the present invention two schemes；
Figure 18 be the embodiment of the present invention two be in shortest focal length when infrared ray 850nm defocusing curve figure；
Figure 19 be the embodiment of the present invention two be in shortest focal length when lateral chromatic aberration curve graph；
Figure 20 be the embodiment of the present invention two be in shortest focal length when longitudinal aberration diagram schematic diagram；
Figure 21 is that 0.435-0.656 μm of MTF when being in longest focal length of the embodiment of the present invention two schemes；
Figure 22 be the embodiment of the present invention two be in longest focal length when 0.435-0.656 μm of visible light of defocusing curve
Figure；
Figure 23 is that the MTF of infrared 850nm when being in longest focal length of the embodiment of the present invention two schemes；
Figure 24 be the embodiment of the present invention two be in longest focal length when infrared ray 850nm defocusing curve figure；
Figure 25 be the embodiment of the present invention two be in longest focal length when lateral chromatic aberration curve graph；
Figure 26 be the embodiment of the present invention two be in longest focal length when longitudinal aberration diagram schematic diagram；
Figure 27 is that 0.435-0.656 μm of MTF when being in shortest focal length of the embodiment of the present invention three schemes；
Figure 28 be the embodiment of the present invention three be in shortest focal length when 0.435-0.656 μm of visible light of defocusing curve
Figure；
Figure 29 is that the MTF of infrared 850nm when being in shortest focal length of the embodiment of the present invention three schemes；
Figure 30 be the embodiment of the present invention three be in shortest focal length when infrared ray 850nm defocusing curve figure；
Figure 31 be the embodiment of the present invention three be in shortest focal length when lateral chromatic aberration curve graph；
Figure 32 be the embodiment of the present invention three be in shortest focal length when longitudinal aberration diagram schematic diagram；
Figure 33 is that 0.435-0.656 μm of MTF when being in longest focal length of the embodiment of the present invention three schemes；
Figure 34 be the embodiment of the present invention three be in longest focal length when 0.435-0.656 μm of visible light of defocusing curve
Figure；
Figure 35 is that the MTF of infrared 850nm when being in longest focal length of the embodiment of the present invention three schemes；
Figure 36 be the embodiment of the present invention three be in longest focal length when infrared ray 850nm defocusing curve figure；
Figure 37 be the embodiment of the present invention three be in longest focal length when lateral chromatic aberration curve graph；
Figure 38 be the embodiment of the present invention three be in longest focal length when longitudinal aberration diagram schematic diagram；
Figure 39 is that 0.435-0.656 μm of MTF when being in shortest focal length of the embodiment of the present invention four schemes；
Figure 40 be the embodiment of the present invention four be in shortest focal length when 0.435-0.656 μm of visible light of defocusing curve
Figure；
Figure 41 is that the MTF of infrared 850nm when being in shortest focal length of the embodiment of the present invention four schemes；
Figure 42 be the embodiment of the present invention four be in shortest focal length when infrared ray 850nm defocusing curve figure；
Figure 43 be the embodiment of the present invention four be in shortest focal length when lateral chromatic aberration curve graph；
Figure 44 be the embodiment of the present invention four be in shortest focal length when longitudinal aberration diagram schematic diagram；
Figure 45 is that 0.435-0.656 μm of MTF when being in longest focal length of the embodiment of the present invention four schemes；
Figure 46 be the embodiment of the present invention four be in longest focal length when 0.435-0.656 μm of visible light of defocusing curve
Figure；
Figure 47 is that the MTF of infrared 850nm when being in longest focal length of the embodiment of the present invention four schemes；
Figure 48 be the embodiment of the present invention four be in longest focal length when infrared ray 850nm defocusing curve figure；
Figure 49 be the embodiment of the present invention four be in longest focal length when lateral chromatic aberration curve graph；
Figure 50 be the embodiment of the present invention four be in longest focal length when longitudinal aberration diagram schematic diagram；
Figure 51 is the numerical tabular of the relevant parameter of four embodiments of the invention.
Specific embodiment
To further illustrate that each embodiment, the present invention are provided with attached drawing.These attached drawings are that the invention discloses one of content
Point, mainly to illustrate embodiment, and the associated description of specification can be cooperated to explain the operation principles of embodiment.Cooperation ginseng
These contents are examined, those of ordinary skill in the art will be understood that other possible embodiments and advantages of the present invention.In figure
Component be not necessarily to scale, and similar component symbol is conventionally used to indicate similar component.
Now in conjunction with the drawings and specific embodiments, the present invention is further described.
Described " lens have positive refractive index (or negative refractive index) ", refers to the lens with first-order theory theoretical calculation
Paraxial refractive index out is positive (or being negative).Described " the object sides (or image side surface) of lens " are defined as imaging ray and pass through
The particular range of lens surface.The face shape bumps judgement of lens can pass through according to the judgment mode of skill usual in the field
The sign of radius of curvature (being abbreviated as R value) judges the bumps of lens face shape deflection.R value common can be used in optical design software
In, such as Zemax or CodeV.R value is also common in the lens data sheet (lens data sheet) of optical design software.
For object side, when R value be timing, be determined as object side be convex surface；When R value is negative, determine that object side is concave surface.Instead
It, for image side surface, when R value is timing, judgement image side surface is concave surface；When R value is negative, determine that image side surface is convex surface.
The present invention provides a kind of zoom lens, along an optical axis successively include the first lens to the 4th thoroughly from object side to image side
Mirror, diaphragm and the 5th lens to the 12nd lens；First lens respectively include one towards object side to the 12nd lens and make
Object side that imaging ray passes through and one is towards image side and the image side surface that passes through imaging ray.
First lens have negative refractive index, and the object side of first lens is convex surface, and the image side surface of first lens is recessed
Face；Second lens have negative refractive index, and the object side of second lens is convex surface, and the image side surface of second lens is concave surface；Third
Lens have negative refractive index, and the object side of the third lens is concave surface, and the image side surface of the third lens is concave surface；4th lens tool
Positive refractive index, the object side of the 4th lens are convex surface, and the image side surface of the 4th lens is convex surface；First lens to the 4th thoroughly
Mirror constitutes focusing lens group, can move back and forth along optical axis relative to diaphragm.
5th lens have positive refractive index, and the object side of the 5th lens is convex surface, and the image side surface of the 5th lens is convex
Face；6th lens have positive refractive index, and the object side of the 6th lens is convex surface, and the image side surface of the 6th lens is convex surface；7th
Lens have negative refractive index, and the object side of the 7th lens is concave surface, and the image side surface of the 7th lens is concave surface；8th lens have just
Refractive index, the object side of the 8th lens are concave surface, and the image side surface of the 8th lens is convex surface；9th lens have positive refractive index,
The object side of 9th lens is convex surface, and the image side surface of the 9th lens is convex surface；Tenth lens have negative refractive index, and the tenth thoroughly
The object side of mirror is convex surface, and the image side surface of the tenth lens is concave surface；11st lens have positive refractive index, the 11st lens
Object side is convex surface, and the image side surface of the 11st lens is convex surface；12nd lens have negative refractive index, the 12nd lens
Object side is concave surface, and the image side surface of the 12nd lens is concave surface；5th lens to the 12nd lens constitute Zoom lens group,
It can move back and forth along optical axis relative to diaphragm.
First lens into the 12nd lens at least there are two lens it is mutually glued, with carry out preferably control color difference, should
There are zoom lens the lens of refractive index there was only above-mentioned 12.Light passing of the present invention is big, low good according to characteristic, in the bad situation of light
Under, it can also realize clearly color image；Transmission function is managed, high-resolution, height parsing, image sharpness is high, and image is equal
It is even；Focal length section span is big, and visual field angular spread is big, switches strong flexibility；Infrared confocal property is good, switches outside visible red under wide-angle mode
When defocusing amount it is small；Preferably, color reducibility is good for color difference control when visible light.
Preferably, the image side surface of first lens and the object side of the second lens are mutually glued, are conducive to correcting chromatic aberration.
Preferably, the image side surface of the third lens and the object side of the 4th lens are mutually glued, are conducive to correcting chromatic aberration.
It is furthermore preferred that the zoom lens more meets: vd3-vd4 > 28, wherein vd3 and vd4 be respectively the third lens and
4th lens are conducive to further correcting chromatic aberration in the abbe number of d line.
Preferably, the object side of the image side surface and the 7th lens of the 6th lens is mutually glued, is conducive to correcting chromatic aberration.
It is furthermore preferred that the zoom lens more meets: vd6-vd7 > 30, wherein vd6 and vd7 be respectively the 6th lens and
7th lens are conducive to further correcting chromatic aberration in the abbe number of d line.
Preferably, the object side of the image side surface and the 12nd lens of the 11st lens is mutually glued, is conducive to correct color
Difference.
It is furthermore preferred that the zoom lens more meets: vd11-vd12 > 30, wherein vd11 and vd12 is respectively the 11st
Lens and the 12nd lens are conducive to further correcting chromatic aberration in the abbe number of d line.
Preferably, which more meets: vd3 > 56, vd6 > 60, vd11 > 60, wherein vd3, vd6 and vd11 difference
Abbe number for the third lens, the 6th lens and the 11st lens in d line optimizes color difference to reduce the dispersion of light.
Preferably, which more meets: nd8 > 1.8, nd9 > 1.8, nd12 > 1.8, wherein nd8, nd9 and nd12
Respectively the 8th lens, the 9th lens and the 12nd lens are in the refractive index of d line, optimization optical texture that can be relatively good.
Preferably, which more meets: 0.3 < fw/BFLw < 0.4, wherein fw is shortest focal length (i.e. wide-angle position
When focal length), BFLw be shortest focal length when back focal length can better adapt to various video cameras so that back focal length is longer.
Preferably, which more meets: 0.7 < ft/BFLt < 0.8, wherein ft is longest focal length (i.e. focal length position
When focal length), BFLt be longest focal length when back focal length can better adapt to various video cameras so that back focal length is longer.
Zoom lens of the invention will be described in detail with specific embodiment below.
Implement one
As illustrated in fig. 1 and 2, the present invention provides a kind of zoom lens, successively wrap from object side A1 to image side A2 along an optical axis I
Include 11 to the 4th lens 14 of the first lens, diaphragm 3,21 to the 12nd lens 28 of the 5th lens, protection glass 4 and imaging surface 5；
First lens, 11 to the 12nd lens 28 respectively include one towards object side A1 and the object side for passing through imaging ray and one
Towards image side A2 and the image side surface that passes through imaging ray.
First lens 11 have negative refractive index, and the object side 111 of first lens 11 is convex surface, the picture of first lens 11
Side 112 is concave surface；Second lens 12 have negative refractive index, and the object side 121 of second lens 12 is convex surface, second lens
12 image side surface 122 is concave surface；The third lens 13 have negative refractive index, and the object side 131 of the third lens 13 is concave surface, the third
The image side surface 132 of lens 13 is concave surface；4th lens 14 have positive refractive index, and the object side 141 of the 4th lens 14 is convex
Face, the image side surface 142 of the 4th lens 14 are convex surface；First lens, 11 to the 4th lens 14 constitute focusing lens group 1, can
Move back and forth along optical axis I relative to diaphragm 3.
5th lens 21 have positive refractive index, and the object side 211 of the 5th lens 21 is convex surface, the picture of the 5th lens 21
Side 212 is convex surface；6th lens 22 have positive refractive index, and the object side 221 of the 6th lens 22 is convex surface, the 6th lens 22
Image side surface 222 be convex surface；7th lens 23 have negative refractive index, and the object side 231 of the 7th lens 23 is concave surface, and the 7th thoroughly
The image side surface 232 of mirror 23 is concave surface；8th lens 24 have positive refractive index, and the object side 241 of the 8th lens 24 is concave surface, should
The image side surface 242 of 8th lens 24 is convex surface；9th lens 25 have positive refractive index, and the object side 251 of the 9th lens 25 is convex
Face, the image side surface 252 of the 9th lens 25 are convex surface；Tenth lens 26 have negative refractive index, the object side 261 of the tenth lens 26
For convex surface, the image side surface 262 of the tenth lens 26 is concave surface；11st lens 27 have positive refractive index, the 11st lens 27
Object side 271 is convex surface, and the image side surface 272 of the 11st lens 27 is convex surface；12nd lens 28 have negative refractive index, this
The object side 281 of 12 lens 28 is concave surface, and the image side surface 282 of the 12nd lens 28 is concave surface；5th lens 21 are to
12 lens 28 constitute Zoom lens group 2, can move back and forth along optical axis I relative to diaphragm 3.
In this specific embodiment example, the mutual glue in object side 121 of the image side surface 112 of the first lens 11 and the second lens 12
It closes, the image side surface 132 of the third lens 13 and the object side 141 of the 4th lens 14 are mutually glued, the image side of the 6th lens 22
Face 222 and the object side 231 of the 7th lens 23 are mutually glued, the image side surface 272 and the 12nd lens 28 of the 11st lens 27
Object side 281 it is mutually glued.Certainly, in other embodiments, it is also possible to the lens that other lens are mutually glued, after gluing
Group number may not be 4.
Detailed optical data when shortest focal length (wide-angle) of this specific embodiment are as shown in table 1-1.
Detailed optical data when the shortest focal length of table 1-1 embodiment one
Detailed optical data when longest focal length (focal length) of this specific embodiment are as shown in table 1-2.
Detailed optical data when the longest focal length of table 1-2 embodiment one
The numerical value of some conditional expressions of this specific embodiment please refers to Figure 51.
The resolving power of this specific embodiment please refers to Fig. 3, Fig. 5, Fig. 9 and Figure 11, can be seen from the chart to biography letter control
Good, resolution is high, it is seen that and under luminous environment, in wide-angle, the mtf value of 200lp/mm spatial frequency is greater than 0.25, in focal length,
The mtf value of 200lp/mm spatial frequency is greater than 0.15；Under infrared environmental, under 200lp/mm spatial frequency, mtf value is all larger than
0.15；Visible light and the confocal property of infrared 850nm please refer to Fig. 4, Fig. 6, Figure 10 and Figure 12, it can be seen that visible light with it is infrared confocal
Property it is good, under wide-angle, it is seen that with defocusing amount when infrared switching be 2 μm；Under focal length, it is seen that with defocusing amount when infrared switching be 13
μm；Lateral chromatic aberration figure is detailed in Fig. 7 and Figure 13, it can be seen that lateral chromatic aberration is less than ± 0.005mm；Longitudinal aberration diagram be detailed in Fig. 8 and
Figure 14, it can be seen that longitudinal axial chromatic aberration is less than ± 0.055mm.
In this specific embodiment, the focal length f=3-12mm of zoom lens；F-number FNO=1.4-2.64, in wide-angle,
Distance TTLw=68.096mm of the object side 111 of first lens 11 to imaging surface 5 on optical axis I；In focal length, the first lens
Distance TTLt=50.181mm of the 11 object side 111 to imaging surface 5 on optical axis I, DFOV=34 DEG C of field angle.
Implement two
The present embodiment is identical as the face type bumps and refractive index of each lens of embodiment one, only the curvature of each lens surface
The optical parameters such as radius, lens thickness are different.
Detailed optical data when shortest focal length (wide-angle) of this specific embodiment are as shown in table 2-1.
Detailed optical data when the shortest focal length of table 2-1 embodiment two
Detailed optical data when longest focal length (focal length) of this specific embodiment are as shown in table 2-2.
Detailed optical data when the longest focal length of table 2-2 embodiment two
The numerical value of some conditional expressions of this specific embodiment please refers to Figure 51.
The resolving power of this specific embodiment please refers to Figure 15, Figure 17, Figure 21 and Figure 23, can be seen from the chart to biography letter pipe
It controls, resolution is high, it is seen that under luminous environment, in wide-angle, the mtf value of 200lp/mm spatial frequency is greater than 0.25, in focal length,
The mtf value of 200lp/mm spatial frequency is greater than 0.15；Under infrared environmental, under 200lp/mm spatial frequency, mtf value is all larger than
0.15；Visible light and the confocal property of infrared 850nm please refer to Figure 16, Figure 18, Figure 22 and Figure 24, it can be seen that visible light with it is infrared total
Coke is good, under wide-angle, it is seen that with defocusing amount when infrared switching be 2 μm；Under focal length, it is seen that be with defocusing amount when infrared switching
13μm；Lateral chromatic aberration figure is detailed in Figure 19 and Figure 25, it can be seen that lateral chromatic aberration is less than ± 0.005mm；Longitudinal aberration diagram is detailed in figure
20 and Figure 26, it can be seen that longitudinal axial chromatic aberration is less than ± 0.055mm.
In this specific embodiment, the focal length f=3-12mm of zoom lens；F-number FNO=1.4-2.64, in wide-angle,
Distance TTLw=67.992mm of the object side 111 of first lens 11 to imaging surface 5 on optical axis I；In focal length, the first lens
Distance TTLt=50.284mm of the 11 object side 111 to imaging surface 5 on optical axis I, DFOV=34 DEG C of field angle.
Implement three
The present embodiment is identical as the face type bumps and refractive index of each lens of embodiment one, only the curvature of each lens surface
The optical parameters such as radius, lens thickness are different.
Detailed optical data when shortest focal length (wide-angle) of this specific embodiment are as shown in table 3-1.
Detailed optical data when the shortest focal length of table 3-1 embodiment three
Detailed optical data when longest focal length (focal length) of this specific embodiment are as shown in table 3-2.
Detailed optical data when the longest focal length of table 3-2 embodiment three
The numerical value of some conditional expressions of this specific embodiment please refers to Figure 51.
The resolving power of this specific embodiment please refers to Figure 27, Figure 29, Figure 33 and Figure 35, can be seen from the chart to biography letter pipe
It controls, resolution is high, it is seen that under luminous environment, in wide-angle, the mtf value of 200lp/mm spatial frequency is greater than 0.25, in focal length,
The mtf value of 200lp/mm spatial frequency is greater than 0.15；Under infrared environmental, under 200lp/mm spatial frequency, mtf value is all larger than
0.15；Visible light and the confocal property of infrared 850nm please refer to Figure 28, Figure 30, Figure 34 and Figure 36, it can be seen that visible light with it is infrared total
Coke is good, under wide-angle, it is seen that with defocusing amount when infrared switching be 2 μm；Under focal length, it is seen that be with defocusing amount when infrared switching
13μm；Lateral chromatic aberration figure is detailed in Figure 31 and Figure 37, it can be seen that lateral chromatic aberration is less than ± 0.005mm；Longitudinal aberration diagram is detailed in figure
32 and Figure 38, it can be seen that longitudinal axial chromatic aberration is less than ± 0.055mm.
In this specific embodiment, the focal length f=3-12mm of zoom lens；F-number FNO=1.4-2.64, in wide-angle,
Distance TTLw=67.667mm of the object side 111 of first lens 11 to imaging surface 5 on optical axis I；In focal length, the first lens
Distance TTLt=49.281mm of the 11 object side 111 to imaging surface 5 on optical axis I, DFOV=34 DEG C of field angle.
Implement four
The present embodiment is identical as the face type bumps and refractive index of each lens of embodiment one, only the curvature of each lens surface
The optical parameters such as radius, lens thickness are different.
Detailed optical data when shortest focal length (wide-angle) of this specific embodiment are as shown in table 4-1.
Detailed optical data when the shortest focal length of table 4-1 example IV
Detailed optical data when longest focal length (focal length) of this specific embodiment are as shown in table 4-2.
Detailed optical data when the longest focal length of table 4-2 example IV
The numerical value of some conditional expressions of this specific embodiment please refers to Figure 51.
The resolving power of this specific embodiment please refers to Figure 39, Figure 41, Figure 45 and Figure 47, can be seen from the chart to biography letter pipe
It controls, resolution is high, it is seen that under luminous environment, in wide-angle, the mtf value of 200lp/mm spatial frequency is greater than 0.25, in focal length,
The mtf value of 200lp/mm spatial frequency is greater than 0.15；Under infrared environmental, under 200lp/mm spatial frequency, mtf value is all larger than
0.15；Visible light and the confocal property of infrared 850nm please refer to Figure 40, Figure 42, Figure 46 and Figure 48, it can be seen that visible light with it is infrared total
Coke is good, under wide-angle, it is seen that with defocusing amount when infrared switching be 2 μm；Under focal length, it is seen that be with defocusing amount when infrared switching
13μm；Lateral chromatic aberration figure is detailed in Figure 43 and Figure 49, it can be seen that lateral chromatic aberration is less than ± 0.005mm；Longitudinal aberration diagram is detailed in figure
44 and Figure 50, it can be seen that longitudinal axial chromatic aberration is less than ± 0.055mm.
In this specific embodiment, the focal length f=3-12mm of zoom lens；F-number FNO=1.4-2.64, in wide-angle,
Distance TTLw=67.361mm of the object side 111 of first lens 11 to imaging surface 5 on optical axis I；In focal length, the first lens
Distance TTLt=49.214mm of the 11 object side 111 to imaging surface 5 on optical axis I, DFOV=34 DEG C of field angle.
Although specifically showing and describing the present invention in conjunction with preferred embodiment, those skilled in the art should be bright
It is white, it is not departing from the spirit and scope of the present invention defined by the appended claims, it in the form and details can be right
The present invention makes a variety of changes, and is protection scope of the present invention.
Claims (10)
1. a kind of zoom lens, it is characterised in that: from object side to image side along an optical axis successively include the first lens to the 4th lens,
Diaphragm and the 5th lens to the 12nd lens；First lens respectively include one towards object side to the 12nd lens and make to be imaged
Object side that light passes through and one is towards image side and the image side surface that passes through imaging ray；
First lens have negative refractive index, and the object side of first lens is convex surface, and the image side surface of first lens is concave surface；The
Two lens have negative refractive index, and the object side of second lens is convex surface, and the image side surface of second lens is concave surface；The third lens tool
Negative refractive index, the object side of the third lens are concave surface, and the image side surface of the third lens is concave surface；4th lens have positive dioptric
Rate, the object side of the 4th lens are convex surface, and the image side surface of the 4th lens is convex surface；First lens to the 4th lens are constituted
Focusing lens group；
5th lens have positive refractive index, and the object side of the 5th lens is convex surface, and the image side surface of the 5th lens is convex surface；The
Six lens have positive refractive index, and the object side of the 6th lens is convex surface, and the image side surface of the 6th lens is convex surface；7th lens tool
Negative refractive index, the object side of the 7th lens are concave surface, and the image side surface of the 7th lens is concave surface；8th lens have positive dioptric
Rate, the object side of the 8th lens are concave surface, and the image side surface of the 8th lens is convex surface；9th lens have positive refractive index, this
The object side of nine lens is convex surface, and the image side surface of the 9th lens is convex surface；Tenth lens have negative refractive index, the tenth lens
Object side is convex surface, and the image side surface of the tenth lens is concave surface；11st lens have positive refractive index, the object side of the 11st lens
Face is convex surface, and the image side surface of the 11st lens is convex surface；12nd lens have negative refractive index, the object side of the 12nd lens
Face is concave surface, and the image side surface of the 12nd lens is concave surface；5th lens to the 12nd lens constitute Zoom lens group；
First lens into the 12nd lens at least there are two lens it is mutually glued, the zoom lens have refractive index lens
It is 12 only above-mentioned.
2. zoom lens according to claim 1, it is characterised in that: the object of the image side surface of first lens and the second lens
Side is mutually glued.
3. zoom lens according to claim 1, it is characterised in that: the object of the image side surface of the third lens and the 4th lens
Side is mutually glued.
4. zoom lens according to claim 3, which is characterized in that the zoom lens more meets: vd3-vd4 > 28,
In, vd3 and vd4 are respectively the abbe number of the third lens and the 4th lens in d line.
5. zoom lens according to claim 1, it is characterised in that: the image side surface of the 6th lens and the object of the 7th lens
Side is mutually glued.
6. zoom lens according to claim 5, which is characterized in that the zoom lens more meets: vd6-vd7 > 30,
In, vd6 and vd7 are respectively the abbe number of the 6th lens and the 7th lens in d line.
7. zoom lens according to claim 1, it is characterised in that: the image side surface and the 12nd lens of the 11st lens
Object side it is mutually glued.
8. zoom lens according to claim 7, which is characterized in that the zoom lens more meets: vd11-vd12 > 30,
In, vd11 and vd12 are respectively the abbe number of the 11st lens and the 12nd lens in d line.
9. zoom lens according to claim 1, which is characterized in that the zoom lens more meets: vd3 > 56, vd6 > 60,
Vd11 > 60, wherein vd3, vd6 and vd11 are respectively the dispersion system of the third lens, the 6th lens and the 11st lens in d line
Number.
10. zoom lens according to claim 1, which is characterized in that the zoom lens more meets: nd8 > 1.8, nd9 >
1.8, nd12 > 1.8, wherein nd8, nd9 and nd12 are respectively the folding of the 8th lens, the 9th lens and the 12nd lens in d line
Penetrate rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910758508.0A CN110346927A (en) | 2019-08-16 | 2019-08-16 | A kind of zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910758508.0A CN110346927A (en) | 2019-08-16 | 2019-08-16 | A kind of zoom lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110346927A true CN110346927A (en) | 2019-10-18 |
Family
ID=68185237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910758508.0A Pending CN110346927A (en) | 2019-08-16 | 2019-08-16 | A kind of zoom lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110346927A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0735975A (en) * | 1993-07-22 | 1995-02-07 | Matsushita Electric Ind Co Ltd | Wide angle zoom lens |
| JP2001201683A (en) * | 2000-01-19 | 2001-07-27 | Olympus Optical Co Ltd | Zoom lens |
| JP2002277737A (en) * | 2001-03-15 | 2002-09-25 | Fuji Photo Optical Co Ltd | Wide-angle zoom lens |
| JP2006030581A (en) * | 2004-07-15 | 2006-02-02 | Fujinon Corp | Large-diameter wide-angle lens |
| WO2014038146A1 (en) * | 2012-09-05 | 2014-03-13 | 富士フイルム株式会社 | Wide angle lens, and imaging device |
| CN104133286A (en) * | 2013-04-30 | 2014-11-05 | 扬明光学股份有限公司 | Zoom lens |
| JP2019061005A (en) * | 2017-09-26 | 2019-04-18 | キヤノン株式会社 | Zoom lens and imaging device including the same |
| CN110082894A (en) * | 2019-05-07 | 2019-08-02 | 厦门力鼎光电股份有限公司 | A kind of zoom lens |
| CN210572983U (en) * | 2019-08-16 | 2020-05-19 | 厦门力鼎光电股份有限公司 | Zoom lens |
-
2019
- 2019-08-16 CN CN201910758508.0A patent/CN110346927A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0735975A (en) * | 1993-07-22 | 1995-02-07 | Matsushita Electric Ind Co Ltd | Wide angle zoom lens |
| JP2001201683A (en) * | 2000-01-19 | 2001-07-27 | Olympus Optical Co Ltd | Zoom lens |
| JP2002277737A (en) * | 2001-03-15 | 2002-09-25 | Fuji Photo Optical Co Ltd | Wide-angle zoom lens |
| JP2006030581A (en) * | 2004-07-15 | 2006-02-02 | Fujinon Corp | Large-diameter wide-angle lens |
| WO2014038146A1 (en) * | 2012-09-05 | 2014-03-13 | 富士フイルム株式会社 | Wide angle lens, and imaging device |
| CN104133286A (en) * | 2013-04-30 | 2014-11-05 | 扬明光学股份有限公司 | Zoom lens |
| JP2019061005A (en) * | 2017-09-26 | 2019-04-18 | キヤノン株式会社 | Zoom lens and imaging device including the same |
| CN110082894A (en) * | 2019-05-07 | 2019-08-02 | 厦门力鼎光电股份有限公司 | A kind of zoom lens |
| CN210572983U (en) * | 2019-08-16 | 2020-05-19 | 厦门力鼎光电股份有限公司 | Zoom lens |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103430075B (en) | Variable magnification optical system and imaging device | |
| CN207396836U (en) | A kind of lens system and camera lens | |
| CN110308541A (en) | A kind of optical imaging lens | |
| CN110361833A (en) | A kind of optical imaging lens | |
| CN109116531A (en) | A kind of zoom lens | |
| CN109116532A (en) | Zoom lens | |
| CN110082894A (en) | A kind of zoom lens | |
| CN110045486A (en) | A kind of optical imaging lens | |
| CN209707794U (en) | A kind of optical imaging lens | |
| CN204705759U (en) | A kind of lens combination and camera lens | |
| CN208888463U (en) | A kind of zoom lens | |
| CN102540433B (en) | Zoom lens and image pickup apparatus equipped with same | |
| CN210348042U (en) | High-resolution lens | |
| CN109975965A (en) | A kind of zoom lens | |
| CN108474927B (en) | Zoom lens and photographic device | |
| CN209028287U (en) | Zoom lens | |
| CN117055201B (en) | 8-time zoom security lens | |
| CN108254881B (en) | Optical lens | |
| CN109143554A (en) | A kind of zoom lens | |
| CN116908999B (en) | Large wide-angle low-distortion video conference lens | |
| CN209765145U (en) | optical imaging lens | |
| CN209117962U (en) | A kind of zoom lens and video camera | |
| CN209167653U (en) | A kind of ultra-thin fish eye lens | |
| CN209117959U (en) | A kind of imaging system | |
| CN114967083B (en) | Zoom lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |