CN109613686A - A kind of ultra-thin wide-angle lens of no thermalization - Google Patents
A kind of ultra-thin wide-angle lens of no thermalization Download PDFInfo
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- CN109613686A CN109613686A CN201811574711.4A CN201811574711A CN109613686A CN 109613686 A CN109613686 A CN 109613686A CN 201811574711 A CN201811574711 A CN 201811574711A CN 109613686 A CN109613686 A CN 109613686A
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- object plane
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- 230000003287 optical effect Effects 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 21
- 239000011521 glass Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000009738 saturating Methods 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000003384 imaging method Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000004075 alteration Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 241000700608 Sagitta Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- 238000012546 transfer Methods 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
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
-
- 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
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
Abstract
The present invention relates to a kind of no ultra-thin wide-angle lens of thermalization, including lens group, lens group is successively arranged from object plane to image planes along optical axis: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens, the object plane side of first lens is convex surface, image planes side is concave surface, and focal power is negative；The object plane side of second lens is convex surface, and image planes side is concave surface, and focal power is negative；The object plane side of the third lens is convex surface, and image planes side is convex surface, and focal power is positive；The object plane side of 4th lens is convex surface, and image planes side is concave surface, and focal power is negative；The object plane side of 5th lens is convex surface, and image planes side is convex surface, and focal power is positive；The object plane side of 6th lens is convex surface, and image planes side is concave surface, and focal power is positive.Wide-angle lens of the invention has the advantages of high pixel, miniaturization, and for ultra-wide angle up to 200 degree, environmental suitability is strong.
Description
Technical field
The present invention relates to a kind of no ultra-thin wide-angle lens of thermalization, belong to optical image technology field.
Background technique
In recent years, especially portable with camera function with the development of science and technology, portable electronic product gradually rises
Formula electronic product, which obtains people, more to be favored, and the photosensitive element of general optical system is nothing more than being photosensitive coupling element (CCD)
Or two kinds of Complimentary Metal-Oxide semiconductor element (COMS), with progressing greatly for manufacture of semiconductor technology, the pixel of photosensitive element
Size reduction, optical system are intended to higher pixel, the Pixel Dimensions of chip are smaller and smaller, to the optical system to match at
As quality requirement is also higher and higher.The prior art further promotes the image quality of camera lens by increasing eyeglass number, but thoroughly
The increase of mirror number is easy to cause camera lens overall length too long, is unfavorable for camera lens miniaturization and lightweight.In addition, the high pixel for monitoring
Bugeye lens is widely used in indoor and outdoor, daily 24 hours 365 days 1 year in running order, environment temperature locating for camera lens
Degree variation is huge.Common monitoring camera will appear under high and low temperature environment after different imagings burnt (rear cut-off distance), referred to as camera lens at
The temperature drift of picture, leads to that the imaging is not clear.Therefore, design the optics of a environmental stability strong, miniaturization and wide angle at
As device just seems very necessary.
Summary of the invention
The object of the present invention is to provide a kind of no ultra-thin wide-angle lens of thermalization, the specific scheme is that
A kind of ultra-thin wide-angle lens of no thermalization, including lens group, lens group are successively arranged from object plane to image planes along optical axis: the
One lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens, the object plane side of the first lens are convex
Face, image planes side are concave surface, and focal power is negative；The object plane side of second lens is convex surface, and image planes side is concave surface, and focal power is
It is negative；The object plane side of the third lens is convex surface, and image planes side is convex surface, and focal power is positive；The object plane side of 4th lens is convex surface, as
Surface side is concave surface, and focal power is negative；The object plane side of 5th lens is convex surface, and image planes side is convex surface, and focal power is positive；6th
The object plane side of lens is convex surface, and image planes side is concave surface, and focal power is positive；
Wherein, the first lens, the third lens are glass lens, and the second lens, the 4th lens, the 5th lens and the 6th are thoroughly
Mirror is plastic aspheric lens；4th lens and the mutually glued formation compound lens of the 5th lens, and meet 0.085 < (f2*
F4)/(f5*f6) < 0.155, wherein f2 is the focal length of the second lens, and f4 is the focal length of the 4th lens, and f5 is the coke of the 5th lens
Away from f6 is the focal length of the 6th lens.
Preferably, each lens of the lens group meet following condition: -7.2 < f1/f < -3.1；Wherein, f1 is first saturating
The focal length of mirror, f are the focal length of lens group.
Preferably, the Refractive Index of Material Nd5 of the 5th lens, material Abbe constant Vd5, the material refraction of the 6th lens
Rate Nd6, material Abbe constant Vd6 meet: 0.017 < (Nd5/Vd5)=(Nd6/Vd6) < 0.037.
It preferably, include also an aperture device (ST), the aperture device is between the third lens and the 4th lens.
Preferably, the 4th lens material refractive index Nd4, material Abbe constant Vd4, meet relational expression: 0.033 <
(Nd4/Vd4)<0.073。
It preferably, further include the optical filter that the 6th lens image side is set.
Preferably, the refractive index of the third lens is nd3, and meets following relationship: 1.90≤nd3≤2.02.
Beneficial point of the invention is: wide-angle lens of the invention has the advantages of high pixel, miniaturization, and ultra-wide angle reaches
200 degree, environmental suitability is strong, and using glass lens technique for temperature compensation, temperature camera lens in -30 DEG C to+70 DEG C variations is not required to
It re-focuses it is ensured that imaging clearly.
Detailed description of the invention
Fig. 1 is the lens schematic diagram of the embodiment of the present invention；
Fig. 2 is the first analysis diagram of the embodiment of the present invention；
Fig. 3 is the second analysis diagram of the embodiment of the present invention；
Fig. 4 is the analysis diagram at -30 DEG C of the embodiment of the present invention；
Fig. 5 is the analysis diagram at -+70 DEG C of the embodiment of the present invention；
Fig. 6 is the curvature of field figure of the embodiment of the present invention；
Fig. 7 is the F-theta distortion figure of the embodiment of the present invention.
Specific embodiment
As shown in Figure 1, the ultra-thin wide-angle lens of no thermalization of the invention, including lens group, lens group along optical axis from object plane to
Image planes are successively arranged: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens, and first thoroughly
The object plane side of mirror is convex surface, and image planes side is concave surface, and focal power is negative；The object plane side of second lens is convex surface, and image planes side is recessed
Face, focal power are negative；The object plane side of the third lens is convex surface, and image planes side is convex surface, and focal power is positive；The object of 4th lens
Surface side is convex surface, and image planes side is concave surface, and focal power is negative；The object plane side of 5th lens is convex surface, and image planes side is convex surface, light
Focal power is positive；The object plane side of 6th lens is convex surface, and image planes side is concave surface, and focal power is positive；
Wherein, the first lens, the third lens are glass lens, and the second lens, the 4th lens, the 5th lens and the 6th are thoroughly
Mirror is plastic aspheric lens；4th lens and the mutually glued formation compound lens of the 5th lens, and meet 0.085 < (f2*
F4)/(f5*f6) < 0.155, wherein f2 is the focal length of the second lens, and f4 is the focal length of the 4th lens, and f5 is the coke of the 5th lens
Away from f6 is the focal length of the 6th lens.
As an improvement, each lens of the lens group meet following condition: -7.2 < f1/f < -3.1；Wherein, f1 first
The focal length of lens, f are the focal length of lens group.
As an improvement, the Refractive Index of Material Nd5 of the 5th lens, material Abbe constant Vd5, the material folding of the 6th lens
Penetrate rate Nd6, material Abbe constant Vd6 satisfaction: 0.017 < (Nd5/Vd5)=(Nd6/Vd6) < 0.037.
As an improvement, also include an aperture device (ST), the aperture device be located at the third lens and the 4th lens it
Between.
As an improvement, the 4th lens material refractive index Nd4, material Abbe constant Vd4, meet relational expression: 0.033
<(Nd4/Vd4)<0.073。
As an improvement, further including the optical filter that the 6th lens image side is arranged in.
As an improvement, the refractive index of the third lens is nd3, and meet following relationship: 1.90≤nd3≤2.02.
In a specific embodiment of this patent, when operating distance is infinity, the total focal length f=of lens group
1.23mm, FNO=2.0, FOV=200 ° of field angle, the parameters of lens group are successively listed in Table 1 below:
Table 1
In the embodiment, the second lens, the 4th lens, the 5th lens and the 6th lens are plastic aspheric lens,
Aspherical correlation values are successively listed in table 2:
Table 2
As shown in Figures 2 and 3, wherein Fig. 2 Fig. 3 is embodiment MTF at 20 degrees Celsius
(ModulationTransferFunction, modulation transfer function) value figure, the mtf value figure are based on parameter in table 1, optical lens
The measurement of the qualities such as the resolution ratio most valued defines mtf value and is necessarily greater than 0, and less than 1, closer in the art mtf value
1, illustrate that the performance of camera lens is more excellent, i.e. high resolution；Its variable be spatial frequency, spatial frequency i.e. with a mm in the range of
More fewer striplines can be showed to measure, unit is indicated with lp/mm；Fixed high frequency (such as 200lp/mm) curve represents camera lens point
Resolution characteristic, this curve is higher, and resolution of lens is higher, and ordinate is mtf value.Abscissa can set image field center to measurement
The distance of point, camera lens is the symmetrical structure centered on optical axis, center to the pixel qualitative change law of all directions be it is identical,
Due to the influence of the factors such as aberration, certain point is remoter at a distance from image field center in image field, and mtf value is generally in downward trend.
Therefore using the distance of image field center to image field edge as abscissa, it can reflect the imaging quality of lens edge.In addition, deviateing
The position of image field center, the mtf value as measured by sinusoidal grating of the lines with lines radially along a tangential direction are
Different.The MTF curve that the lines for being parallel to diameter generate is known as sagitta of arc curve, is designated as S (Sagittal), and will be parallel to
The MTF curve that the lines of tangent line generate is known as meridian curve, is designated as T (Meridional).In this way, which MTF curve generally has
Two, i.e. S curve and T curve, in Fig. 2, Fig. 3, MTF becomes when having multiple groups using the distance of image field center to image field edge as abscissa
Change curve, reflects that this lens system has compared with high resolution, the more current mainstream optical system of optical property, which has, greatly to be promoted.
High pixel bugeye lens is widely used in indoor and outdoor, 365 days 1 year daily 24 hours in running order, mirrors
Variation of ambient temperature locating for head is huge.The typical operating temperature requirements of camera lens are -30 DEG C~70 DEG C, and camera lens must assure that at this
The temperature difference reach 100 degrees Celsius in the range of, be imaged without re-focusing it is still clear with 20 DEG C (room temperature)
It is clear.It since the refractive index of eyeglass material can be affected by temperature and changes, lens dimension, lens barrel material, microscope base material can be with
The variation of temperature and expand with heat and contract with cold, these factors cause common monitoring camera to will appear different imagings under high and low temperature environment
Burnt (rear cut-off distance) afterwards, the referred to as temperature drift of lens imaging.Together refer to Fig. 4 and Fig. 5, found out by Fig. 4 Fig. 5, operating temperature-
30 DEG C~70 DEG C, the present embodiment camera lens, which is still ensured that, to be imaged still with 20 DEG C of (room temperature) one without re-focusing
Sample is clear.
The corresponding curvature of field figure of lens system visible light part is made of three curve T and three curve S；Wherein, three songs
Line T respectively indicates the aberration of the corresponding meridional beam (TangentialRays) of three kinds of wavelength (486nm, 587nm and 656nm),
Three curve S respectively indicate the corresponding sagittal beam (SagittialRays) of three kinds of wavelength (486nm, 587nm and 656nm)
Aberration, meridianal curvature of field value and Sagittal field curvature value are smaller, illustrate that image quality is better.As shown in fig. 6, the control of meridianal curvature of field value exists
Within the scope of 50um, Sagittal field curvature value is controlled within 30um range.
For bugeye lens, the linear distortion of its lens system, i.e. F-theta distortion are usually checked.As shown in fig. 7,
The Ftheta aberration rate of the embodiment controls within 20%.
Claims (7)
1. a kind of ultra-thin wide-angle lens of no thermalization, including lens group, lens group are successively arranged from object plane to image planes along optical axis: first
Lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens, it is characterised in that: the object of the first lens
Surface side is convex surface, and image planes side is concave surface, and focal power is negative；The object plane side of second lens is convex surface, and image planes side is concave surface, light
Focal power is negative；The object plane side of the third lens is convex surface, and image planes side is convex surface, and focal power is positive；The object plane side of 4th lens is
Convex surface, image planes side are concave surface, and focal power is negative；The object plane side of 5th lens is convex surface, and image planes side is convex surface, and focal power is
Just；The object plane side of 6th lens is convex surface, and image planes side is concave surface, and focal power is positive；
Wherein, the first lens, the third lens are glass lens, and the second lens, the 4th lens, the 5th lens and the 6th lens are
Plastic aspheric lens；4th lens and the mutually glued formation compound lens of the 5th lens, and 0.085 < (f2*f4) of satisfaction/
(f5*f6) < 0.155, wherein f2 is the focal length of the second lens, and f4 is the focal length of the 4th lens, and f5 is the focal length of the 5th lens,
F6 is the focal length of the 6th lens.
2. the ultra-thin wide-angle lens of no thermalization according to claim 1, it is characterised in that: each lens of the lens group meet
Following condition: -7.2 < f1/f < -3.1；Wherein, f1 is the focal length of the first lens, and f is the focal length of lens group.
3. the ultra-thin wide-angle lens of no thermalization according to claim 1, it is characterised in that: the material of the 5th lens reflects
Rate Nd5, material Abbe constant Vd5, Refractive Index of Material Nd6, the material Abbe constant Vd6 of the 6th lens meet: 0.017 < (Nd5/
Vd5)=(Nd6/Vd6) < 0.037.
4. the ultra-thin wide-angle lens of no thermalization according to claim 1, it is characterised in that: also include an aperture device
(ST), the aperture device is between the third lens and the 4th lens.
5. the ultra-thin wide-angle lens of no thermalization according to claim 1, it is characterised in that: the 4th lens material refractive index
Nd4, material Abbe constant Vd4 meet relational expression: 0.033 < (Nd4/Vd4) < 0.073.
6. the ultra-thin wide-angle lens of no thermalization according to claim 1, it is characterised in that: further include that setting is saturating the described 6th
The optical filter of image side.
7. the ultra-thin wide-angle lens of no thermalization according to claim 1, it is characterised in that: the refractive index of the third lens is
Nd3, and meet following relationship: 1.90≤nd3≤2.02.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574711.4A CN109613686A (en) | 2018-12-21 | 2018-12-21 | A kind of ultra-thin wide-angle lens of no thermalization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574711.4A CN109613686A (en) | 2018-12-21 | 2018-12-21 | A kind of ultra-thin wide-angle lens of no thermalization |
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| Publication Number | Publication Date |
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| CN109613686A true CN109613686A (en) | 2019-04-12 |
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|---|---|---|---|
| CN201811574711.4A Pending CN109613686A (en) | 2018-12-21 | 2018-12-21 | A kind of ultra-thin wide-angle lens of no thermalization |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975960A (en) * | 2019-04-25 | 2019-07-05 | 协益电子（苏州）有限公司 | One kind looking around wide-angle without thermalization camera lens and automobile panoramic round-looking system |
| CN110320646A (en) * | 2019-07-25 | 2019-10-11 | 广东弘景光电科技股份有限公司 | Large aperture wide-angle optics and its camera module of application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359087A (en) * | 2007-08-02 | 2009-02-04 | 鸿富锦精密工业（深圳）有限公司 | Wide-angle lens and vehicle apparatus using the wide-angle lens |
| CN204009202U (en) * | 2014-06-05 | 2014-12-10 | 厦门奇亚光电科技有限公司 | A kind of full glass wide-angle lens |
| WO2015040808A1 (en) * | 2013-09-20 | 2015-03-26 | 日立マクセル株式会社 | Image pickup lens system and image pickup device |
| CN209167659U (en) * | 2018-12-21 | 2019-07-26 | 江西特莱斯光学有限公司 | A kind of ultra-thin wide-angle lens of no thermalization |
-
2018
- 2018-12-21 CN CN201811574711.4A patent/CN109613686A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359087A (en) * | 2007-08-02 | 2009-02-04 | 鸿富锦精密工业（深圳）有限公司 | Wide-angle lens and vehicle apparatus using the wide-angle lens |
| WO2015040808A1 (en) * | 2013-09-20 | 2015-03-26 | 日立マクセル株式会社 | Image pickup lens system and image pickup device |
| CN204009202U (en) * | 2014-06-05 | 2014-12-10 | 厦门奇亚光电科技有限公司 | A kind of full glass wide-angle lens |
| CN209167659U (en) * | 2018-12-21 | 2019-07-26 | 江西特莱斯光学有限公司 | A kind of ultra-thin wide-angle lens of no thermalization |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975960A (en) * | 2019-04-25 | 2019-07-05 | 协益电子（苏州）有限公司 | One kind looking around wide-angle without thermalization camera lens and automobile panoramic round-looking system |
| CN110320646A (en) * | 2019-07-25 | 2019-10-11 | 广东弘景光电科技股份有限公司 | Large aperture wide-angle optics and its camera module of application |
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