CN106324806A - Optical fixed-focus lens - Google Patents
Optical fixed-focus lens Download PDFInfo
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- CN106324806A CN106324806A CN201510340856.8A CN201510340856A CN106324806A CN 106324806 A CN106324806 A CN 106324806A CN 201510340856 A CN201510340856 A CN 201510340856A CN 106324806 A CN106324806 A CN 106324806A
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- 230000003287 optical effect Effects 0.000 title abstract description 14
- 241000219739 Lens Species 0.000 claims description 206
- 210000000695 crystalline len Anatomy 0.000 claims description 206
- 238000004026 adhesive bonding Methods 0.000 claims description 16
- 239000003292 glue Substances 0.000 claims description 5
- 239000004065 semiconductor Substances 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- 238000003384 imaging method Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000004075 alteration Effects 0.000 description 14
- 230000000007 visual effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000009738 saturating Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
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Abstract
The present invention relates to the lens display technology field, in particular to an optical fixed-focus lens used for realizing a large image surface and a large aperture of the optical fixed-focus lens. The optical fixed-focus lens comprises, orderly from an object side to an image side, a first lens group, a second lens group, a diaphragm and a third lens group, wherein the focal power of the first lens group is negative, the focal power of the second lens group is positive, the focal power of the third lens group is positive, and the diaphragm is located between the second lens group and the third lens group; the first lens group comprises a biconvex first lens of which the focal power is positive, a biconcave second lens of which the focal power is negative, a biconcave third lens of which the focal power is negative and a biconvex fourth lens of which the focal power is positive. Therefore, the high definition imaging demand can be realized, the image surface and the view field of the optical fixed-focus lens are expanded, and the resolution of the optical fixed-focus lens is improved.
Description
Technical field
The present invention relates to lens Display Technique field, particularly relate to a kind of optics tight shot.
Background technology
The development trend of intelligent transportation optical lens is high definition, big image planes, low cost, big visual field, the big depth of field.
Along with the development such as safe city, road monitoring, the intelligent transportation field such as electricity police, tachymeter is more favored
1/1 ", 4/3 " optical lens of large scale CCD/CMOS such as inch, to realize 3 the above parking in track cars
The high-resolution monitoring of the field range such as board and traffic lights.Intelligent transportation safety monitoring optical lens market at present
On, it is possible to meet 4/3 simultaneously " inch imaging, the angle of visual field about 60 ° product the most rare, and price is also
Relatively expensive.
It addition, the imaging pixel quality of intelligent transportation electronic police, tachymeter gradually steps up, it is better than 5,000,000,
Even as high as more than 8,000,000, it is the inevitable requirement in market, and 8,000,000 pixels and image planes can be reached simultaneously
Satisfied 4/3 " inch, angle of visual field camera lens more than 60 ° are rarely having sale on the market.
Summary of the invention
The embodiment of the present invention provides a kind of optics tight shot, focuses mirror in order to solve optics of the prior art
Head cannot meet big image planes large aperture problem.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
A kind of optics tight shot, is arranged in order from the object side to image side and includes: the first battery of lens, the second lens
Group, diaphragm and the 3rd battery of lens；
Wherein, the focal power of described first battery of lens is negative, and the focal power of described second battery of lens is just, institute
The focal power stating the 3rd battery of lens is just, described diaphragm is positioned at described second battery of lens and described 3rd battery of lens
Between, wherein, described first battery of lens includes: focal power is that positive biconvex the first lens, focal power are
Negative double concave type the second lens, focal power be negative double concave type the 3rd lens, focal power be positive biconvex the
Four lens.
Therefore, it is possible to realize the demand of high definition imaging, and expand the image planes of optics tight shot and visual field,
And improve the resolution of optics tight shot.
Optionally, described second battery of lens includes: focal power is that positive biconvex the 5th lens, focal power are
Negative double concave type the 6th lens, focal power is positive biconvex the 7th lens.
Optionally, described 3rd battery of lens includes: focal power is for just, and concave surface is towards the concave-convex type the 8th of thing side
Lens, focal power be negative double concave type the 9th lens, focal power be positive biconvex the tenth lens, focal power
For positive biconvex the 11st lens, focal power be negative double concave type the 12nd lens, focal power be positive double
Convex the 13rd lens.
Optionally, described first battery of lens, described second battery of lens, described diaphragm and described 3rd lens
Group constitutes anti-long distance structure.
Optionally,
In described first battery of lens, described first lens and described second lens gluing form first group of double glue
Closing lens, described 3rd lens and described 4th lens gluing form second group of cemented doublet.
Optionally,
In described second battery of lens, described 6th lens and described 7th lens gluing form the 3rd group of double glue
Close lens.
Optionally,
In described 3rd battery of lens, described 8th lens, described 9th lens are glued with described tenth lens
Forming three balsaming lenss, described 12nd lens and described 13rd lens gluing form the 4th group of double gluings thoroughly
Mirror.
Optionally, each lens in described first battery of lens, described second battery of lens, described 3rd battery of lens
It is spherical lens.
Optionally, the effective focal length of described first battery of lens meets with the effective focal length of described optics tight shot
First sets relation, and the effective focal length of described second battery of lens is full with the effective focal length of described optics tight shot
Foot second sets relation；
Wherein, described first set relation as: 0.8 < | F1/Feff| < 2.2, described second set relation as:
0.8<F2/Feff< 1.9, wherein FeffFor the effective focal length of described optics tight shot, F1For described first lens
The effective focal length of group, F2Effective focal length for described second battery of lens.
Optionally, described optics tight shot is image-forming objective lens, and the image planes of described optics tight shot are electric charge
One in coupled apparatus CCD or CMOS semiconductor sensor CMOS.
Accompanying drawing explanation
Fig. 1 is the structural representation of optics tight shot in the embodiment of the present invention；
Fig. 2 is the spherical aberration diagram of optics tight shot in the embodiment of the present invention；
Fig. 3 is the lateral chromatic aberration figure of optics tight shot in the embodiment of the present invention；
Fig. 4 A is the curvature of field figure of optics tight shot in the embodiment of the present invention；
Fig. 4 B is the distortion figure of optics tight shot in the embodiment of the present invention；
Fig. 5 A-Fig. 5 E is the light sector diagram of the imaging image of optics tight shot in the embodiment of the present invention.
Detailed description of the invention
In order to solve optics tight shot of the prior art cannot meet big image planes large aperture problem, this
Invention provides a kind of optics tight shot, and this optics tight shot is arranged in order from the object side to image side and includes:
First battery of lens, the second battery of lens, diaphragm and the 3rd battery of lens；Wherein, the focal power of the first battery of lens
Being negative, the focal power of the second battery of lens is just, the focal power of the 3rd battery of lens is just, it is saturating that diaphragm is positioned at second
Between mirror group and the 3rd battery of lens, wherein, the first battery of lens includes: the biconvex first that focal power is positive is saturating
Mirror, focal power be negative double concave type the second lens, focal power be that negative double concave type the 3rd lens, focal power are
Positive biconvex the 4th lens.
Below in conjunction with the accompanying drawings the preferred embodiment of the present invention is described in detail.
Refering to shown in Fig. 1, for the structural representation of optics tight shot a kind of in the present invention.
The direction being previously mentioned in following example for, such as: upper and lower, left and right, front or rear etc., only
It it is the direction with reference to accompanying drawing.Therefore, the direction term of use is used to explanation, rather than is used for limiting the present invention.
A kind of optics tight shot, is arranged in order from the object side to image side and includes: the first battery of lens A, second
Battery of lens B, diaphragm ST and the 3rd battery of lens C.
Wherein, the focal power of the first battery of lens A is negative, and the focal power of the second battery of lens B is just, the 3rd
The focal power of battery of lens C is just, diaphragm ST between the second battery of lens B and the 3rd battery of lens C, its
In, the first battery of lens A includes: focal power be positive biconvex the first lens 1, focal power be negative concave-concave
Type the second lens 2, focal power are that the biconvex the 4th that negative double concave type the 3rd lens 3, focal power are positive is saturating
Mirror 4.
As long as the first battery of lens meets focal power here is to bear and meet above-mentioned constituent relation effectively to protect
The demand of card high definition imaging, and contribute to expanding the image planes of optics tight shot and visual field and improving optics
The resolution of tight shot.
Optionally, the second battery of lens B includes: focal power is that positive biconvex the 5th lens 5, focal power are
Negative double concave type the 6th lens 6, focal power is positive biconvex the 7th lens 7.
3rd battery of lens C includes: focal power is for just, and concave surface is towards concave-convex type the 8th lens 8 of thing side, light
Focal power be negative double concave type the 9th lens 9, focal power be that positive biconvex the tenth lens 10, focal power are for just
Biconvex the 11st lens 11, focal power be negative double concave type the 12nd lens 12, focal power be positive
Biconvex the 13rd lens 13.
Here the first battery of lens A, the second battery of lens B, diaphragm ST and the 3rd battery of lens C constitutes anti-
Long distance structure.
It is adapted to realize big image planes and the specification requirement of big visual field it is true that anti-long distance version compares.
And the present invention is exactly based on negative rear positive anti-long distance version before have employed in focal power distribution, Yi Jihe
The eyeglass face type of reason and minute surface selection, reasonable while meeting specification demands achieve aberration control
System.
Each lens in first battery of lens A, the second battery of lens B, the 3rd battery of lens C are spherical lens.
Owing to spherical lens has relatively low cost, the manufacturing cost of the tight shot of the present embodiment therefore can be reduced.
Additionally, use spherical lens can also reduce manufacturing tolerance sensitivity and the difficulty of inspection material, be conducive to big
Amount produces.
In the present embodiment, for reducing aberration, reduce lens surface reflection quantity, in the first battery of lens A,
First lens 1 and the second lens 2 gluing form first group of cemented doublet, the 3rd lens 3 and the 4th lens
4 gluings form second group of cemented doublet.
In the second battery of lens B, the 6th lens 6 and the 7th lens 7 gluing form the 3rd group of cemented doublet.
In the 3rd battery of lens C, the 8th lens the 8, the 9th lens 9 and the tenth lens 10 gluing form three
Balsaming lens, the 12nd lens the 12 and the 13rd lens 13 gluing forms the 4th group of cemented doublet.
It may be noted that the present invention is not limited with above-mentioned gluing.Glued scheme herein is mainly from assembling just
The preferred version proposed from the standpoint of the raising of prompt, transmitance etc..Usually, glued scheme makes contiguity into
Scheme is also feasible.
In the present embodiment, between the second battery of lens B and the 3rd battery of lens C, aperture light is preferably configured
Door screen ST.By so configured, before and after making diaphragm ST, positive negative power suitably disperses symmetry, easily carries out all
The correction of aberration.If aperture diaphragm ST is arranged in than the second battery of lens B closer to thing side, then emergent pupil
Bore becomes big, it has to increasing the bore of the 3rd battery of lens C, lens weight also increases, and is not the most preferred.
Additionally, in the embodiment of the present invention, the effective focal length of the first battery of lens A is effective with optics tight shot
Focal length meets the first setting relation, the effective focal length of the second battery of lens B and the effective focal length of optics tight shot
Meet second setting relation, first set relation as: 0.8 < | F1/Feff| < 2.2, second set relation as:
0.8<F2/Feff< 1.9, wherein FeffFor the effective focal length of optics tight shot, F1It is the effective of the first battery of lens
Focal length, F2It it is the effective focal length of the second battery of lens.
Concrete, set relation for first, when | F1/Feff| when exceeding the upper limit, negative power is the most weak, system
Length is bigger.When | F1/Feff| when exceeding lower limit, negative power is too strong, and higher order aberratons increases, and distortion is also difficult to
Correct.Therefore, the tight shot in the present embodiment meet 0.8 < | F1/Feff| < when 2.2, there is preferably imaging
Quality and rational structure space form.
Set relation for second, work as F2/FeffWhen exceeding lower limit 0.8, F2Relatively diminish, i.e. focal power phase
Big to becoming, senior coma, astigmatism so can be caused to increase.Work as F2/FeffWhen exceeding the upper limit 1.9, F2Relatively
Become big, i.e. focal power diminishes relatively, and optical system so can be caused long, and the 3rd battery of lens bore strengthens,
The market requirement to optical system densification cannot be met.
Above-mentioned two imposes a condition, and is mainly reflected in the control to aberration, balance, and to whole optical system
The control of system size.By to two controls imposed a condition, improving the performance of optics tight shot.
In the embodiment of the present invention, optics tight shot is image-forming objective lens, and the image planes of optics tight shot are electric charge
One in coupled apparatus CCD or CMOS semiconductor sensor CMOS.
Herein below is by for an embodiment of optics tight shot in the present invention.It should be noted that following
Table 1 be not limited to the present invention with listed data, any those skilled in the art are with reference to the present invention
Afterwards, when its parameter or setting being made suitable variation, it must belong in scope of the invention.
Table 1
In this table 1, list the interval between the radius in each face of 13 lens, adjacent surface respectively,
And the refractive index of each lens and Abbe number.When being spaced apart 0, represent that the face of two lens overlaps.
Fig. 2, Fig. 3, Fig. 4 A and Fig. 4 B, Fig. 5 A to Fig. 5 E are optics tight shot in the present invention
Image optics emulation datagram.Fig. 2 is the spherical aberration (spherical aberration) of optics tight shot
Figure, wherein axis of ordinates represents beam size, and abscissa illustrates spherical aberration and axial chromatic aberration size.By Fig. 2
Understanding, in the present invention, the spherical aberration size of optics tight shot controls between-0.03mm～0.1mm.Fig. 3
For lateral chromatic aberration (lateral color) figure of optics tight shot, wherein axis of ordinates represents beam size,
Abscissa illustrates lateral chromatic aberration size in image planes.From the figure 3, it may be seen that the lateral chromatic aberration control of optics tight shot
System is between-0.005mm～0.001mm.Fig. 4 A and Fig. 4 B is respectively the curvature of field (field of tight shot
Curve) figure and distortion (distortinon) figure, wherein vertical coordinate all represents visual field size, the horizontal stroke of curvature of field figure
Coordinate represents the curvature of field value of camera lens with millimeter for dimension, and the abscissa of distortion figure represents mirror with percentage ratio for dimension
The distortion size of head.From Fig. 4 A, meridianal curvature of field controls at about 0.1mm, and Sagittal field curvature controls
About 0.008mm, from Fig. 4 B, maximum distortion is unloaded about-5%.Fig. 5 A to Fig. 5 E is light
Learn the light sector diagram (ray fan plot) of imaging image of tight shot, its be with wavelength be 486 nanometers,
Generating emulation datagram as a example by the light of 588 nanometers and 656 nanometers, abscissa is expressed as the light beam after normalization
Bore, vertical coordinate is the intersection height value of light and image planes.Fig. 2, Fig. 3, Fig. 4 A and Fig. 4 B, Fig. 5 A
To the figure shown by Fig. 5 E all in the range of standard, thus can verify the tight shot of the present embodiment
Really there is good quality of optical imaging.
In sum, in the present invention, optics tight shot is arranged in order from the object side to image side and includes: first
Battery of lens, the second battery of lens, diaphragm and the 3rd battery of lens；Wherein, the focal power of the first battery of lens is negative,
The focal power of the second battery of lens is just, the focal power of the 3rd battery of lens is just, diaphragm be positioned at the second battery of lens with
Between 3rd battery of lens, wherein, the first battery of lens includes: focal power is positive biconvex the first lens, light
Focal power be negative double concave type the second lens, focal power be negative double concave type the 3rd lens, focal power be positive double
Convex the 4th lens, therefore, it is possible to realize the demand of high definition imaging, expand the image planes of optics tight shot
With visual field the resolution that improves optics tight shot.
Additionally, in the embodiment optical system that provides of the present invention, the first battery of lens, the second battery of lens and the
Three battery of lens form anti-long distance structure, it is possible to realize the demand of big visual field.Reasonably focal power distribution and diaphragm
Position, makes camera lens volume compact.A large amount of luminous fluxes using improving optical system of glue component, subtract
Few ray machine fit tolerance cumulative amount, and reduce tolerance sensitivity, assembly difficulty, final lifting assembles yield.
Reasonably glass combination and optimization, it is ensured that the imaging demand of high definition, finally achieves super large image planes, high score
Resolution, the effect of big visual field.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know base
This creativeness concept, then can make other change and amendment to these embodiments.So, appended right is wanted
Ask and be intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the embodiment of the present invention and not take off
Spirit and scope from the embodiment of the present invention.So, if these amendments of the embodiment of the present invention and modification belong to
Within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention be also intended to comprise these change and
Including modification.
Claims (10)
1. an optics tight shot, it is characterised in that be arranged in order from the object side to image side and include: first
Battery of lens, the second battery of lens, diaphragm and the 3rd battery of lens；
Wherein, the focal power of described first battery of lens is negative, and the focal power of described second battery of lens is just, institute
The focal power stating the 3rd battery of lens is just, described diaphragm is positioned at described second battery of lens and described 3rd battery of lens
Between, wherein, described first battery of lens includes: focal power is that positive biconvex the first lens, focal power are
Negative double concave type the second lens, focal power be negative double concave type the 3rd lens, focal power be positive biconvex the
Four lens.
2. optics tight shot as claimed in claim 1, it is characterised in that described second battery of lens bag
Include: focal power be positive biconvex the 5th lens, focal power be negative double concave type the 6th lens, focal power is
Positive biconvex the 7th lens.
3. optics tight shot as claimed in claim 1, it is characterised in that described 3rd battery of lens bag
Include: focal power is for just, and concave surface is negative double concave type the 9th towards concave-convex type the 8th lens, the focal power of thing side
Lens, focal power be positive biconvex the tenth lens, focal power be that positive biconvex the 11st lens, light are burnt
Degree is positive biconvex the 13rd lens for negative double concave type the 12nd lens, focal power.
4. the optics tight shot as described in any one of claim 1-3, it is characterised in that described first
Battery of lens, described second battery of lens, described diaphragm and described 3rd battery of lens constitute anti-long distance structure.
5. the optics tight shot as described in any one of claim 1-4, it is characterised in that
In described first battery of lens, described first lens and described second lens gluing form first group of double glue
Closing lens, described 3rd lens and described 4th lens gluing form second group of cemented doublet.
6. the optics tight shot as described in any one of claim 2-5, it is characterised in that
In described second battery of lens, described 6th lens and described 7th lens gluing form the 3rd group of double glue
Close lens.
7. the optics tight shot as described in any one of claim 3-6, it is characterised in that
In described 3rd battery of lens, described 8th lens, described 9th lens are glued with described tenth lens
Forming three balsaming lenss, described 12nd lens and described 13rd lens gluing form the 4th group of double gluings thoroughly
Mirror.
8. the optics tight shot as described in any one of claim 1-7, it is characterised in that described first
Each lens in battery of lens, described second battery of lens, described 3rd battery of lens are spherical lens.
9. the optics tight shot as described in any one of claim 1-8, it is characterised in that described first
The effective focal length of the effective focal length of battery of lens and described optics tight shot meets the first setting relation, and described the
The effective focal length of two battery of lens meets the second setting relation with the effective focal length of described optics tight shot；
Wherein, described first set relation as: 0.8 < | F1/Feff| < 2.2, described second set relation as:
0.8<F2/Feff< 1.9, wherein FeffFor the effective focal length of described optics tight shot, F1For described first lens
The effective focal length of group, F2Effective focal length for described second battery of lens.
10. the optics tight shot as described in any one of claim 1-9, it is characterised in that described optics
Tight shot is image-forming objective lens, and the image planes of described optics tight shot are charge coupled device ccd or complementation
One in formula metal oxide semiconductor sensor CMOS.
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| CN201510340856.8A CN106324806B (en) | 2015-06-17 | 2015-06-17 | A kind of optics tight shot |
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| CN201510340856.8A CN106324806B (en) | 2015-06-17 | 2015-06-17 | A kind of optics tight shot |
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| CN106324806B CN106324806B (en) | 2019-07-16 |
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| CN107507301A (en) * | 2017-10-19 | 2017-12-22 | 南京中高知识产权股份有限公司 | High definition drive recorder and its method of work |
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| CN107678147A (en) * | 2017-09-19 | 2018-02-09 | 浙江大华技术股份有限公司 | A kind of lens combination, fish eye lens and image collecting device |
| CN107688224A (en) * | 2017-10-19 | 2018-02-13 | 南京中高知识产权股份有限公司 | Intelligence is with robot and its method of work |
| CN107757482A (en) * | 2017-10-19 | 2018-03-06 | 南京中高知识产权股份有限公司 | Pilotless automobile and its method of work |
| CN107789166A (en) * | 2017-10-19 | 2018-03-13 | 南京中高知识产权股份有限公司 | Blind person is with guiding system and its method of work |
| CN108732718A (en) * | 2017-04-24 | 2018-11-02 | 黄俊裕 | Imaging lens |
| CN108873258A (en) * | 2018-07-17 | 2018-11-23 | 莆田学院 | A kind of ultra-wide angle, large aperture FISH EYE LENS OPTICS system |
| CN109960004A (en) * | 2017-12-22 | 2019-07-02 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN110376715A (en) * | 2019-07-18 | 2019-10-25 | 广东奥普特科技股份有限公司 | A kind of high-res tight shot |
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| CN111221103A (en) * | 2019-11-27 | 2020-06-02 | 浙江大华技术股份有限公司 | Lens |
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| CN111458845A (en) * | 2020-06-01 | 2020-07-28 | 浙江舜宇光学有限公司 | Optical imaging system |
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| CN113625432A (en) * | 2021-09-10 | 2021-11-09 | 嘉兴中润光学科技股份有限公司 | Large-aperture fixed-focus lens and image pickup device |
| CN113640972A (en) * | 2021-08-10 | 2021-11-12 | 腾龙光学（佛山）有限公司 | A miniaturized high-resolution fixed-focus optical system and image pickup device |
| CN115032763A (en) * | 2022-05-20 | 2022-09-09 | 佛山华国光学器材有限公司 | Side surface optical imaging system |
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