CN109324389A - A kind of wide-angle photographic lens - Google Patents
A kind of wide-angle photographic lens Download PDFInfo
- Publication number
- CN109324389A CN109324389A CN201811288489.1A CN201811288489A CN109324389A CN 109324389 A CN109324389 A CN 109324389A CN 201811288489 A CN201811288489 A CN 201811288489A CN 109324389 A CN109324389 A CN 109324389A
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- lens
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- diopter
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- 239000006185 dispersion Substances 0.000 claims abstract description 10
- 230000003287 optical effect Effects 0.000 abstract description 9
- 230000004075 alteration Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 201000009310 astigmatism Diseases 0.000 abstract description 5
- 238000005457 optimization Methods 0.000 abstract description 5
- 206010010071 Coma Diseases 0.000 abstract description 3
- 230000002401 inhibitory effect Effects 0.000 abstract description 2
- 238000003384 imaging method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The present invention discloses a kind of wide-angle photographic lens, it is related to lens technology field, the camera lens is disposed with the lens of 14 pieces of 10 groups of different refractivities and/or different dispersion values from object plane to image planes, including Qian Zu lens group, Zhong Zu lens group and Hou Zu lens group, the camera lens meets tan θ * f > 10, wherein θ is angle of half field-of view, and f is lens focus；The camera lens pixel reaches 8K, use the lens of different dispersion values, by the cooperation and optimization of its thickness, lens gap, surface curvature, color difference in the off-axis chromatic aberration and axis of camera lens can be made to be suppressed to the range of very little, the mutual difference more conference of the dispersion values of lens keeps inhibitory effect better；Furthermore the lens for using different refractivity, equally pass through the cooperation and optimization of its thickness, lens gap, surface curvature, so that the spherical aberration coma astigmatism place of camera lens is reduced to small value, can achieve the effect of low distortion by the selection of different optical textures；Optical parallax is lower, and the resolution ratio and imaging effect of corresponding camera lens are better.
Description
Technical field
The present invention relates to lens technology field more particularly to a kind of wide-angle photographic lens.
Background technique
Currently, the camera lens for touching intelligent camera and monitoring system in the market is mainly mega pixel camera lens, maximum pixel
Also it can only achieve 4K and 1200M pixel, intelligent camera and the monitoring system camera lens more than 4K resolution capability rarely have, while big picture
That structure is complicated is expensive for face intelligent camera and monitoring system, is not suitable in ordinary user crowd.
Summary of the invention
The present invention provides a kind of wide-angle photographic lens aiming at the problem that background technique, by arranging different high low-refractions
Lens are made optical aberration such as astigmatism curvature of field distortion be reduced to the rank of very little, while being reduced using low dispersion not of the same race
On the axis of camera lens and axis Laser with External Dispersive, to achieve the effect that ultrahigh resolution.
To achieve the goals above, the present invention proposes a kind of wide-angle photographic lens, which successively sets from object plane to image planes
The lens of multiple and different refractive index and/or different dispersion values are equipped with, including Qian Zu lens group, Zhong Zu lens group and rear group are thoroughly
Lens group group, the camera lens meet f > 10 tan θ *, and wherein θ is angle of half field-of view, and f is lens focus.
Preferably, camera lens setting includes 14 pieces of 10 groups of lens.
Preferably, the Qian Zu lens group, is disposed with from object plane to image planes: the 1st piece with negative diopter
Lens, the 2nd piece of lens with negative diopter, the 3rd piece of lens with positive diopter, the 4th piece of lens with negative diopter
With the 5th piece of lens with positive diopter.
Preferably, the Zhong Zu lens group is provided with the 6th piece of lens with negative diopter.
Preferably, the Hou Zu lens group, is disposed with from object plane to image planes: the 7th piece with negative diopter
Lens, the 8th piece of lens with positive diopter, the 9th piece of lens with positive diopter, the 10th piece with negative diopter thoroughly
Mirror, the 11st piece of lens with positive diopter, the 12nd piece of lens with negative diopter, the 13rd piece of lens with positive diopter
With the 14th piece of lens with negative diopter.
Preferably, the Qian Zu lens group, in the case where integral mirror head equivalent focal length 100mm, focal length F1 satisfaction-
550mm < F1 < -350mm, overall thickness meet 320mm < T1 < 450mm.
Preferably, the Zhong Zu lens group, in the case where integral mirror head equivalent focal length 100mm, focal length F2 meets |
F2|>2000mm。
Preferably, the Hou Zu lens group, in the case where integral mirror head equivalent focal length 100mm, focal length F3 meets
200mm < F3 < 350mm, overall thickness meet 450mm < T3 < 700mm.
Preferably, in the case where integral mirror head equivalent focal length 100mm, the diaphragm of the camera lens is located at Zhong Zu lens group
In, meet 150mm < T4 < 250mm with the lens mirror distance T4 close to object plane.
Preferably, in the case where integral mirror head equivalent focal length 100mm, the total length T of the camera lens meet 1000mm < T <
1400mm。
The present invention proposes a kind of wide-angle photographic lens, and pixel reaches 8K, using the lens of different dispersion values, passes through its thickness
The cooperation and optimization of degree, lens gap, surface curvature can make color difference in the off-axis chromatic aberration and axis of camera lens be suppressed to the model of very little
It encloses, the mutual difference more conference of the dispersion values of lens keeps inhibitory effect better；Furthermore the lens of different refractivity are used, it is same logical
The cooperation and optimization for crossing its thickness, lens gap, surface curvature make the spherical aberration coma astigmatism place of camera lens be reduced to small value,
It can achieve the effect of low distortion by the selection of different optical textures；Optical parallax is lower, the resolution ratio of corresponding camera lens and at
As effect is better.
Detailed description of the invention
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 technical 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
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is wide-angle photographic lens structural schematic diagram in first embodiment of the invention；
Fig. 2 is wide-angle photographic lens mirror surface structure schematic diagram in second embodiment of the invention；
Fig. 3 is MTF modulation transfer function and spatial resolution relation schematic diagram in third embodiment of the invention；
Fig. 4 is half field-of-view and curvature of field range and half field-of-view and distortion numerical relation schematic diagram in third embodiment of the invention,
Wherein, figure (a) is half field-of-view and curvature of field scale relationships schematic diagram, and figure (b) is half field-of-view and distortion numerical relation schematic diagram；
Label declaration:
1- Qian Zu lens group；2- Zhong Zu lens group；3- Hou Zu lens group；S1-S24 indicates mirror surface；
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
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 description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention,
Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,
Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection scope within.
The present invention proposes a kind of wide-angle photographic lens, realizes 8K resolution ratio and big image planes；
In first preferred embodiment of the invention, as shown in Figure 1, the camera lens is disposed with 14 pieces 10 groups from object plane to image planes
The lens of different refractivity and different dispersion values, including Qian Zu lens group 1, Zhong Zu lens group 2 and Hou Zu lens group 3,
The camera lens meets f > 10 tan θ *, and wherein θ is angle of half field-of view, and f is lens focus.
In the embodiment of the present invention, as shown in Figure 1, the Qian Zu lens group, is disposed with from object plane to image planes: tool
There are the 1st piece of lens of negative diopter, the 2nd piece of lens with negative diopter, the 3rd piece of lens with positive diopter, have and bear
4th piece of lens of diopter and the 5th piece of lens with positive diopter；The Zhong Zu lens group, being provided with has negative bend
6th piece of lens of luminosity；The Hou Zu lens group, is disposed with from object plane to image planes: the 7th piece with negative diopter
Lens, the 8th piece of lens with positive diopter, the 9th piece of lens with positive diopter, the 10th piece with negative diopter thoroughly
Mirror, the 11st piece of lens with positive diopter, the 12nd piece of lens with negative diopter, the 13rd piece of lens with positive diopter
With the 14th piece of lens with negative diopter, any other quantity eyeglass can be inserted between eyeglass in the embodiment of the present invention.
In the embodiment of the present invention, by different height index lens, structure and arrangement, make the optical aberration such as astigmatism curvature of field
Distortion is reduced to the rank of very little, at the same using on axis of the low dispersion not of the same race to reduce camera lens with axis Laser with External Dispersive, thus
Achieve the effect that ultrahigh resolution；
It in second preferred embodiment of the invention, is further limited on the basis of first preferred embodiment, such as Fig. 2 institute
Show, whole system normalizes under conditions of 100mm focal length (i.e. system zooms to 100mm focal length): the preceding group of lens group
Group (optical system being made of mirror surface S1 S2 S3 S4 S5 S6 S7 S8 S9 S10), focal length F1 satisfaction -550mm < F1
< -350mm, overall thickness meet 320mm < T1 < 450mm；The Zhong Zu lens group (optics being made of mirror surface S11 S12
System), focal length F2 meets | F2 | > 2000mm；The Hou Zu lens group (optical system being made of mirror surface S13-S24
System), focal length F3 meets 200mm < F3 < 350mm, overall thickness meets 450mm < T3 < 700mm；The diaphragm of the camera lens is saturating positioned at middle group
In lens group group, meet 150mm < T4 < 250mm with S13 mirror surface distance T4；The total length T of the camera lens meet 1000mm < T <
1400mm；
It in third preferred embodiment of the invention, is further limited on the basis of the second preferred embodiment, such as Fig. 2 institute
Show, optical system parameter normalizes 100mm focal length, as shown in table 1；
Table 1
| Surface serial number | Radius of curvature | Refractive index/Abbe number | Surface interval | Circular cone coefficient |
| S1 | 1056 | 1.806/41.0 | 30.1 | |
| S2 | 205 | — | — | |
| S3 | -2500 | 1.673/32.2 | 21.5 | |
| S4 | 210 | — | — | |
| S5 | -209 | 1.834/37.2 | 67 | |
| S6 | -195 | — | — | |
| S7 | -200 | 1.740/28.3 | 32 | |
| S8 | -305 | — | — | |
| S9 | 865 | 1.740/28.3 | 63 | |
| S10 | -1210 | — | — | |
| S11 | 580 | 1.618/63.4 | 62 | |
| S12 | 550 | — | — | |
| S13 | 730 | 1.850/32.3 | 20 | |
| S14 | 200 | 1.678/55.5 | 55 | |
| S15 | -1540 | — | — | |
| S16 | 200 | 1.697/56.2 | 100 | |
| S17 | -500 | — | — | |
| S18 | -280 | 1.762/26.6 | 14 | |
| S19 | 200 | 1.755/52.3 | 50 | |
| S20 | -450 | — | — | |
| S21 | 250 | 1.762/26.6 | 15 | |
| S22 | 130 | 1.589/61.6 | 80 | |
| S23 | -135 | 1.762/26.6 | 15 | |
| S24 | -500 | — | — | |
| IMG | It is infinite | — | — |
In the embodiment of the present invention, by the cooperation and optimization of its thickness, lens gap, surface curvature, make outside the axis of system
Color difference is suppressed to the range of very little on color difference and axis, and the spherical aberration coma astigmatism place of system is made to be reduced to small value.
In the embodiment of the present invention, as shown in figure 3, ordinate is MTF modulation transfer function, abscissa is spatial resolution,
The physical resolution of the corresponding 8k cmos of abscissa 200, camera lens of the embodiment of the present invention meet MTF in the physical resolution of CMOS
Modulation transfer function is greater than 0.3, that is, has reached the resolution requirement of the CMOS.
It is the curvature of field as schemed (a) in Fig. 4 in the embodiment of the present invention, ordinate is half field-of-view, and abscissa is curvature of field range, is
System is in the full filed range curvature of field within 0-0.03mm；It is distortion as schemed (b) in Fig. 4, ordinate is half field-of-view, and abscissa is abnormal
Variable value, distortion is with visual field variation maximum value less than 30%.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of wide-angle photographic lens, which is characterized in that the camera lens is disposed with multiple and different refractive index from object plane to image planes
And/or the lens of different dispersion values, including Qian Zu lens group, Zhong Zu lens group and Hou Zu lens group, camera lens satisfaction
Tan θ * f > 10, wherein θ is angle of half field-of view, and f is lens focus.
2. wide-angle photographic lens according to claim 1, which is characterized in that camera lens setting includes 14 pieces of 10 groups of lens.
3. wide-angle photographic lens according to claim 1, which is characterized in that the Qian Zu lens group, from object plane to
Image planes are disposed with: the 1st piece of lens with negative diopter, the 2nd piece of lens with negative diopter, with positive diopter
3rd piece of lens, the 4th piece of lens with negative diopter and the 5th piece of lens with positive diopter.
4. wide-angle photographic lens according to claim 1, which is characterized in that the Zhong Zu lens group is provided with tool
There are the 6th piece of lens of negative diopter.
5. wide-angle photographic lens according to claim 1, which is characterized in that the Hou Zu lens group, from object plane to
Image planes are disposed with: the 7th piece of lens with negative diopter, the 8th piece of lens with positive diopter, with positive diopter
9th piece of lens, the 10th piece of lens with negative diopter, the 11st piece of lens with positive diopter, with negative diopter
12 pieces of lens, the 13rd piece of lens with positive diopter and the 14th piece of lens with negative diopter.
6. wide-angle photographic lens according to claim 1, which is characterized in that the Qian Zu lens group, in integral mirror
In the case where head equivalent focal length 100mm, focal length F1 satisfaction -550mm < F1 < -350mm, overall thickness meets 320mm < T1 <
450mm。
7. wide-angle photographic lens according to claim 1, which is characterized in that the Zhong Zu lens group, in integral mirror
In the case where head equivalent focal length 100mm, focal length F2 meets | F2 | > 2000mm.
8. wide-angle photographic lens according to claim 1, which is characterized in that the Hou Zu lens group, in integral mirror
In the case where head equivalent focal length 100mm, focal length F3 meets 200mm < F3 < 350mm, and overall thickness meets 450mm < T3 <
700mm。
9. wide-angle photographic lens according to claim 1, which is characterized in that in the feelings of integral mirror head equivalent focal length 100mm
Under condition, the diaphragm of the camera lens is located in Zhong Zu lens group, meets 150mm < T4 < with the lens mirror distance T4 close to object plane
250mm。
10. wide-angle photographic lens according to claim 1, which is characterized in that in the feelings of integral mirror head equivalent focal length 100mm
Under condition, the total length T of the camera lens meets 1000mm < T < 1400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811288489.1A CN109324389A (en) | 2018-10-31 | 2018-10-31 | A kind of wide-angle photographic lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811288489.1A CN109324389A (en) | 2018-10-31 | 2018-10-31 | A kind of wide-angle photographic lens |
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| Publication Number | Publication Date |
|---|---|
| CN109324389A true CN109324389A (en) | 2019-02-12 |
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| CN201811288489.1A Pending CN109324389A (en) | 2018-10-31 | 2018-10-31 | A kind of wide-angle photographic lens |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030197947A1 (en) * | 2001-12-12 | 2003-10-23 | Nikon Corporation | Optical system with wavelength selecting device |
| CN104777591A (en) * | 2015-04-08 | 2015-07-15 | 安徽长庚光学科技有限公司 | Ultra-wide angle macro lens |
| US20150338605A1 (en) * | 2014-05-26 | 2015-11-26 | Olympus Corporation | Wide Angle Lens and Image Pickup Apparatus Using the Same |
| CN108519663A (en) * | 2018-03-09 | 2018-09-11 | 浙江大华技术股份有限公司 | A kind of zoom lens |
| CN209148944U (en) * | 2018-10-31 | 2019-07-23 | 广州博冠光电科技股份有限公司 | A kind of wide-angle photographic lens |
-
2018
- 2018-10-31 CN CN201811288489.1A patent/CN109324389A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030197947A1 (en) * | 2001-12-12 | 2003-10-23 | Nikon Corporation | Optical system with wavelength selecting device |
| US20150338605A1 (en) * | 2014-05-26 | 2015-11-26 | Olympus Corporation | Wide Angle Lens and Image Pickup Apparatus Using the Same |
| CN104777591A (en) * | 2015-04-08 | 2015-07-15 | 安徽长庚光学科技有限公司 | Ultra-wide angle macro lens |
| CN108519663A (en) * | 2018-03-09 | 2018-09-11 | 浙江大华技术股份有限公司 | A kind of zoom lens |
| CN209148944U (en) * | 2018-10-31 | 2019-07-23 | 广州博冠光电科技股份有限公司 | A kind of wide-angle photographic lens |
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