CN106443969A - Ultra-wide angle photographing lens - Google Patents
Ultra-wide angle photographing lens Download PDFInfo
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- CN106443969A CN106443969A CN201610889821.4A CN201610889821A CN106443969A CN 106443969 A CN106443969 A CN 106443969A CN 201610889821 A CN201610889821 A CN 201610889821A CN 106443969 A CN106443969 A CN 106443969A
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- lens
- thing side
- ultra wide
- angle
- camera len
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- 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
-
- 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
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
Abstract
The invention discloses an ultra-wide angle photographing lens which sequentially comprises a first lens with negative refractive power, a second lens with positive refractive power, a third lens with the positive refractive power, a fourth lens with the positive refractive power, a fifth lens with the negative refractive power and a sixth lens with the positive refractive power from the object side to the image side; the object side surface is a convex surface, and the image side surface is a concave surface; and meanwhile, the following relationship is met: 1/f4 being larger than -2 and less than -1.5, wherein f1 is an effective focal length of the first lens, and f4 is an effective focal length of the fourth lens. According to the ultra-wide angle photographing lens, with adoption of such a structure, realization of a ultra-wide angle is facilitated, the relative illumination is increased, and meanwhile, miniaturization is realized; and the focal length and a facial type of each lens are reasonably allocated, increase of a shot field angle and the peripheral relative illumination and shortening in shot total length is facilitated, and the ultrathin requirement is met.
Description
Technical field
The present invention relates to a kind of TV camera len of ultra wide-angle, the TV camera len of ultra wide-angle being particularly made up of six eyeglasses.
Background technology
In recent years, the development with chip technologies such as CCD or CMOS is so that optical imaging system is gradually toward miniaturization, light
Quantify and the development of high pixel neighborhoods.On market increasing electronic product the field range of optical imaging system is also had more next
Higher requirement.In order to meet these trend, the optical imaging system being applied on all kinds of portable type electronic products is also entered
One step requires miniaturization, high image quality and wide angle.The patent of Patent No. " CN104238076A " proposes a kind of light
System., in the case of ensureing high-resolution, relative illumination is higher for this camera lens.But the angle of visual field of this optical system is less,
Camera lens overall length is long, and the feature of wide angle and miniaturization still has the space that can optimize further.
Content of the invention
It is an object of the invention to provide the TV camera len of ultra wide-angle of a kind of high imaging quality, miniaturization.
TV camera len of ultra wide-angle of the present invention, is comprised to image side successively by thing side：First with negative refracting power is saturating
Mirror；There are the second lens of positive refracting power, there are the 3rd lens of positive refracting power；There are the 4th lens of positive refracting power；Have
5th lens of negative refracting power；There are the 6th lens of positive refracting power, its thing side is convex surface, image side surface is concave surface；Simultaneously full
Sufficient following relationship：-2<f1/f4<- 1.5, wherein, f1 is the effective focal length of the first lens；F4 is effective Jiao of the 4th lens
Away from.It is advantageously implemented ultra-wide angle, improves relative illumination, realize miniaturization simultaneously using this structure.
Further, TV camera len of ultra wide-angle of the present invention meets following relationship：1.8<f3/f<3, wherein, f3
Effective focal length for the 3rd lens；F is the effective focal length of TV camera len of ultra wide-angle.By the focal length of reasonable disposition the 3rd lens,
Be conducive to the aberration of correction system and monochromatic aberration it is achieved that the balance of various aberration.
Further, TV camera len of ultra wide-angle of the present invention meets following relationship：1≤R8/R9<1.5, wherein,
R8 is the radius of curvature of the 4th lens image side surface；R9 is the radius of curvature of the 5th lens thing side.Saturating by reasonable disposition the 4th
Mirror, the radius of curvature of the 5th lens, are conducive to the aberration control of optical system, can obtain less abnormal in the case of wide-angle
Become.
Further, TV camera len of ultra wide-angle of the present invention meets following relationship：0.8<CT4/CT6<1.2, its
In, CT4 is center thickness on optical axis for the 4th lens, and CT6 is center thickness on optical axis for the 6th lens.By Reasonable
Put the center thickness of the 4th lens and the 6th lens, advantageously ensure that the feature of camera lens miniaturization.
Further, TV camera len of ultra wide-angle of the present invention meets following relationship：1<DT21/DT31<1.5, its
In, DT21 is the effective radius of the second lens thing side；DT31 is the effective radius of the 3rd lens thing side.Using this design
Be conducive to controlling size it is ensured that the demand of miniaturization, be simultaneously also beneficial to lens assembling.
Further, TV camera len of ultra wide-angle of the present invention meets following relationship：0.4<SAG11/SAG12<
0.7；Wherein, SAG11 is the intersection point of the first lens thing side and optical axis to the effective radius summit of the first lens thing side
Axle on distance；SAG12 be the first lens image side surface and optical axis intersection point to the first lens thing side effective radius summit it
Between axle on distance.It is advantageously implemented the wide angle of this camera lens using this design, advantageously ensure that relative illumination simultaneously.
Further, TV camera len of ultra wide-angle of the present invention meets following relationship：0.2<ΣT/TTL<0.5, its
In, Σ T is the summation to spacing distance on the countershaft of the 6th lens arbitrary neighborhood two lens for first lens；TTL is the first lens
Thing side is to distance on the axle of imaging surface.Under same size (TTL), interval is oversize, and single lens center thickness can be caused to divide
Cloth is uneven, is unfavorable for minimizing simultaneously；Interval is too short, is difficult to ensure assemblage, and off-axis aberration is also not susceptible to correct, and increases simultaneously
Plus the risk of generation ghost image, meet above formula and can take into account manufacturability and image quality simultaneously.
Further, TV camera len of ultra wide-angle of the present invention meets following relationship：0.5<R7/R11<1.1, its
In, R7 is the radius of curvature of the 4th lens thing side；R11 is the radius of curvature of the 6th lens thing side.Using this design energy
Enough preferably control chromatic longitudiinal aberrations, it is to avoid the introducing of aberration aspect senior aberration.
Further, the first lens thing side in TV camera len of ultra wide-angle of the present invention is convex surface, and image side surface is
Concave surface.First lens adopt falcate, and substantially bend towards object side, are conducive to expanding the angle of visual field.
Further, the second lens thing side in TV camera len of ultra wide-angle of the present invention is concave surface, and image side surface is
Convex surface.By the face type of reasonable disposition first lens and the second lens, can effectively reduce camera lens susceptibility, and beneficial to processing.
Beneficial effects of the present invention are to employ 6 plastic aspherical element eyeglasses, the focal length of each lens and face type Reasonable
Put, contribute to lifting the angle of view and periphery relative illumination, contribute to shortening camera lens overall length, meet ultrathin requirement.
With reference to the accompanying drawings and examples the present invention is described further.
Brief description
Fig. 1 is the structural representation of TV camera len of ultra wide-angle described in embodiment one；
Fig. 2 is chromatic curve figure on the axle of TV camera len of ultra wide-angle described in embodiment one；
Fig. 3 is the astigmatism curve map of TV camera len of ultra wide-angle described in embodiment one；
Fig. 4 is the ratio chromatism, curve map of TV camera len of ultra wide-angle described in embodiment one；
Fig. 5 is the relative illumination curve map of TV camera len of ultra wide-angle described in embodiment one；
Fig. 6 is the structural representation of TV camera len of ultra wide-angle described in embodiment two；
Fig. 7 is chromatic curve figure on the axle of TV camera len of ultra wide-angle described in embodiment two；
Fig. 8 is the astigmatism curve map of TV camera len of ultra wide-angle described in embodiment two；
Fig. 9 is the ratio chromatism, curve map of TV camera len of ultra wide-angle described in embodiment two；
Figure 10 is the relative illumination curve map of TV camera len of ultra wide-angle described in embodiment two；
Figure 11 is the structural representation of TV camera len of ultra wide-angle described in embodiment three；
Figure 12 is chromatic curve figure on the axle of TV camera len of ultra wide-angle described in embodiment three；
Figure 13 is the astigmatism curve map of TV camera len of ultra wide-angle described in embodiment three；
Figure 14 is the ratio chromatism, curve map of TV camera len of ultra wide-angle described in embodiment three；
Figure 15 is the relative illumination curve map of TV camera len of ultra wide-angle described in embodiment three；
Figure 16 is the structural representation of TV camera len of ultra wide-angle described in example IV；
Figure 17 is chromatic curve figure on the axle of TV camera len of ultra wide-angle described in example IV；
Figure 18 is the astigmatism curve map of TV camera len of ultra wide-angle described in example IV；
Figure 19 is the ratio chromatism, curve map of TV camera len of ultra wide-angle described in example IV；
Figure 20 is the relative illumination curve map of TV camera len of ultra wide-angle described in example IV；
Figure 21 is the structural representation of TV camera len of ultra wide-angle described in embodiment five；
Figure 22 is chromatic curve figure on the axle of TV camera len of ultra wide-angle described in embodiment five；
Figure 23 is the astigmatism curve map of TV camera len of ultra wide-angle described in embodiment five；
Figure 24 is the ratio chromatism, curve map of TV camera len of ultra wide-angle described in embodiment five；
Figure 25 is the relative illumination curve map of TV camera len of ultra wide-angle described in embodiment five；
Figure 26 is the structural representation of TV camera len of ultra wide-angle described in embodiment six；
Figure 27 is chromatic curve figure on the axle of TV camera len of ultra wide-angle described in embodiment six；
Figure 28 is the astigmatism curve map of TV camera len of ultra wide-angle described in embodiment six；
Figure 29 is the ratio chromatism, curve map of TV camera len of ultra wide-angle described in embodiment six；
Figure 30 is the relative illumination curve map of TV camera len of ultra wide-angle described in embodiment six；
Figure 31 is the structural representation of TV camera len of ultra wide-angle described in embodiment seven；
Figure 32 is chromatic curve figure on the axle of TV camera len of ultra wide-angle described in embodiment seven；
Figure 33 is the astigmatism curve map of TV camera len of ultra wide-angle described in embodiment seven；
Figure 34 is the ratio chromatism, curve map of TV camera len of ultra wide-angle described in embodiment seven；
Figure 35 is the relative illumination curve map of TV camera len of ultra wide-angle described in embodiment seven；
Figure 36 is the structural representation of TV camera len of ultra wide-angle described in embodiment eight；
Figure 37 is chromatic curve figure on the axle of TV camera len of ultra wide-angle described in embodiment eight；
Figure 38 is the astigmatism curve map of TV camera len of ultra wide-angle described in embodiment eight；
Figure 39 is the ratio chromatism, curve map of TV camera len of ultra wide-angle described in embodiment eight；
Figure 40 is the relative illumination curve map of TV camera len of ultra wide-angle described in embodiment eight.
Specific embodiment
Embodiment one：
Referring to accompanying drawing 1, the TV camera len of ultra wide-angle described in the present embodiment, include successively from thing side to image side：There is negative bending
First lens L1 of folding power；There is the second lens L2 of positive refracting power；There is the 3rd lens L3 of positive refracting power；There is positive flexion
4th lens L4 of power；There is the 5th lens L5 of negative refracting power；There is the 6th lens L6 of positive refracting power.
Wherein：The thing side S1 of the first lens L1 is convex surface, and image side surface S2 is concave surface；The thing side S3 of the second lens L2 is
Concave surface, image side surface S4 is convex surface；3rd lens L3 has thing side S5 and image side surface S6；4th lens L4 have thing side S7 and
Image side surface S8；5th lens L5 has thing side S9 and image side surface S10；The thing side S11 of the 6th lens L6 is convex surface, image side surface
S12 is concave surface；Optical filter L7 has thing side S13 and image side surface S14；TV camera len of ultra wide-angle imaging surface described in the present embodiment
S15 is located at the image side of optical filter L7, is available for installing photo-sensitive cell.
The main design parameters of the TV camera len of ultra wide-angle described in the present embodiment see table 1：
Table 1
Wherein：F1 is the effective focal length of the first lens；F3 is the effective focal length of the 3rd lens；F4 is the effective of the 4th lens
Focal length；F is the effective focal length of TV camera len of ultra wide-angle；R7 is the radius of curvature of the 4th lens thing side；R8 is the 4th lens picture
The radius of curvature of side；R9 is the radius of curvature of the 5th lens thing side；R11 is the radius of curvature of the 6th lens thing side；CT4
For center thickness on optical axis for the 4th lens, CT6 is center thickness on optical axis for the 6th lens；DT21 is the second lens thing
The effective radius of side；DT31 is the effective radius of the 3rd lens thing side；SAG11 is the friendship of the first lens thing side and optical axis
Distance on axle o'clock to the effective radius summit of the first lens thing side；SAG12 is the first lens image side surface and optical axis
Distance on the axle to the effective radius summit of the first lens thing side for the intersection point；Σ T is that the first lens are any to the 6th lens
The summation of spacing distance on the countershaft of adjacent two lens；TTL is the first lens thing side to distance on the axle of imaging surface.
For realizing above-mentioned design parameter, the specific design that the TV camera len of ultra wide-angle described in the present embodiment is adopted see table
2：
Table 2
| Face number | Surface type | Radius of curvature | Thickness | Material | Circular cone coefficient |
| OBJ | Sphere | Infinite | Infinite | ||
| S1 | Aspherical | 10.1241 | 0.3500 | 1.60/30.0 | 9.9513 |
| S2 | Aspherical | 1.9314 | 0.7344 | -0.8806 | |
| S3 | Aspherical | -41.3338 | 1.2745 | 1.54/56.0 | 0.0000 |
| S4 | Aspherical | -2.5012 | 0.0399 | -1.5805 | |
| STO | Sphere | Infinite | 0.0300 | ||
| S5 | Aspherical | 41.1168 | 0.5889 | 1.54/56.0 | 0.0000 |
| S6 | Aspherical | -3.8748 | 0.9384 | 1.3644 | |
| S7 | Aspherical | 3.4910 | 1.3315 | 1.54/56.0 | -1.4653 |
| S8 | Aspherical | -2.0772 | 0.1715 | -1.7155 | |
| S9 | Aspherical | -1.3990 | 0.3500 | 1.64/23.9 | -0.9870 |
| S10 | Aspherical | 10.5331 | 0.0498 | 0.0000 | |
| S11 | Aspherical | 4.8573 | 1.1386 | 1.54/56.0 | 0.0000 |
| S12 | Aspherical | 6.0598 | 0.1925 | 0.0000 | |
| S13 | Sphere | Infinite | 0.2100 | ||
| S14 | Sphere | Infinite | 0.6000 | ||
| S15 | Sphere | Infinite |
In TV camera len of ultra wide-angle described in the present embodiment non-spherical lens aspherical high order term coefficient (A4, A6, A8,
A10, A12) see table 3：
Table 3
| Face number | A4 | A6 | A8 | A10 | A12 |
| S1 | -5.6510E-03 | -1.7225E-03 | -1.3775E-05 | 1.1232E-04 | -1.2807E-05 |
| S2 | 5.0609E-02 | 4.4153E-03 | 2.2286E-02 | -1.5177E-02 | 8.1941E-03 |
| S3 | -6.4420E-03 | 1.7912E-03 | -1.2959E-03 | 3.1871E-03 | -1.2394E-03 |
| S4 | 3.4088E-03 | -5.4022E-04 | 5.9523E-03 | -9.9895E-03 | 4.0564E-03 |
| S5 | -2.5311E-02 | 1.4945E-03 | -5.5900E-03 | -6.3151E-03 | -5.8775E-04 |
| S6 | -6.4684E-02 | 9.5031E-05 | 9.1540E-03 | -1.1241E-02 | 1.0393E-03 |
| S7 | -2.2350E-02 | 1.4973E-03 | -3.6627E-04 | 6.3614E-05 | 2.6385E-05 |
| S8 | -7.3670E-03 | -6.4900E-03 | -1.4765E-05 | 2.2700E-05 | 4.8454E-05 |
| S9 | 1.9570E-02 | -2.2615E-03 | -1.0759E-03 | -1.6411E-05 | 4.7115E-05 |
| S10 | 2.3980E-03 | 3.4088E-04 | 7.5076E-05 | -1.0950E-05 | 6.4227E-07 |
| S11 | -1.5412E-02 | 1.0914E-03 | 1.5743E-06 | 7.0665E-06 | -2.3767E-06 |
| S12 | -1.3558E-02 | 1.2217E-03 | -1.0368E-04 | -5.5207E-06 | 5.9239E-07 |
TV camera len of ultra wide-angle described in the present embodiment, not only effective control aberration, astigmatism, improves periphery and contrasts
Degree, obtains preferable image quality, referring to accompanying drawing 2- Fig. 5, simultaneously it is achieved that the angle of view and shorter system length, and
Miniaturization Design and good manufacturability can be taken into account.
Embodiment two：
Referring to accompanying drawing 6, the TV camera len of ultra wide-angle described in the present embodiment, include successively from thing side to image side：There is negative bending
First lens L1 of folding power；There is the second lens L2 of positive refracting power；There is the 3rd lens L3 of positive refracting power；There is positive flexion
4th lens L4 of power；There is the 5th lens L5 of negative refracting power；There is the 6th lens L6 of positive refracting power.
Wherein：The thing side S1 of the first lens L1 is convex surface, and image side surface S2 is concave surface；The thing side S3 of the second lens L2 is
Concave surface, image side surface S4 is convex surface；3rd lens L3 has thing side S5 and image side surface S6；4th lens L4 have thing side S7 and
Image side surface S8；5th lens L5 has thing side S9 and image side surface S10；The thing side S11 of the 6th lens L6 is convex surface, image side surface
S12 is concave surface；Optical filter L7 has thing side S13 and image side surface S14；TV camera len of ultra wide-angle imaging surface described in the present embodiment
S15 is located at the image side of optical filter L7, is available for installing photo-sensitive cell.
The main design parameters of the TV camera len of ultra wide-angle described in the present embodiment see table 4：
Table 4
Wherein：F1 is the effective focal length of the first lens；F3 is the effective focal length of the 3rd lens；F4 is the effective of the 4th lens
Focal length；F is the effective focal length of TV camera len of ultra wide-angle；R7 is the radius of curvature of the 4th lens thing side；R8 is the 4th lens picture
The radius of curvature of side；R9 is the radius of curvature of the 5th lens thing side；R11 is the radius of curvature of the 6th lens thing side；CT4
For center thickness on optical axis for the 4th lens, CT6 is center thickness on optical axis for the 6th lens；DT21 is the second lens thing
The effective radius of side；DT31 is the effective radius of the 3rd lens thing side；SAG11 is the friendship of the first lens thing side and optical axis
Distance on axle o'clock to the effective radius summit of the first lens thing side；SAG12 is the first lens image side surface and optical axis
Distance on the axle to the effective radius summit of the first lens thing side for the intersection point；Σ T is that the first lens are any to the 6th lens
The summation of spacing distance on the countershaft of adjacent two lens；TTL is the first lens thing side to distance on the axle of imaging surface.
For realizing above-mentioned design parameter, the specific design that the TV camera len of ultra wide-angle described in the present embodiment is adopted see table
5：
Table 5
| Face number | Surface type | Radius of curvature | Thickness | Material | Circular cone coefficient |
| OBJ | Sphere | Infinite | Infinite | ||
| S1 | Aspherical | 12.3900 | 0.4000 | 1.53/55.8 | 0.0000 |
| S2 | Aspherical | 1.5508 | 1.4167 | 0.0000 | |
| S3 | Aspherical | -3.2524 | 0.7648 | 1.64/23.5 | 0.0000 |
| S4 | Aspherical | -3.1401 | 0.2234 | 0.0000 | |
| S5 | Aspherical | 4.0848 | 0.5196 | 1.52/64.2 | 0.0000 |
| S6 | Aspherical | -6.7735 | 0.1004 | 0.0000 | |
| STO | Sphere | Infinite | 0.4553 | ||
| S7 | Aspherical | 2.5874 | 1.0118 | 1.52/64.2 | 0.0000 |
| S8 | Aspherical | -1.8260 | 0.2301 | 0.0000 | |
| S9 | Aspherical | -1.3835 | 0.3000 | 1.65/21.5 | 0.0000 |
| S10 | Aspherical | -14.4479 | 0.5112 | 0.0000 | |
| S11 | Aspherical | 2.7129 | 0.9730 | 1.52/64.2 | 0.0000 |
| S12 | Aspherical | 3.6621 | 0.3435 | 0.0000 | |
| S13 | Sphere | Infinite | 0.2100 | 1.52/64.2 | |
| S14 | Sphere | Infinite | 0.5400 | ||
| S15 | Sphere | Infinite |
In TV camera len of ultra wide-angle described in the present embodiment non-spherical lens aspherical high order term coefficient (A4, A6, A8,
A10, A12, A14, A16) see table 6：
Table 6
TV camera len of ultra wide-angle described in the present embodiment, not only effective control aberration, astigmatism, improves periphery and contrasts
Degree, obtains preferable image quality, referring to accompanying drawing 7- Figure 10, simultaneously it is achieved that the angle of view and shorter system length, and
Miniaturization Design and good manufacturability can be taken into account.
Embodiment three：
Referring to accompanying drawing 11, the TV camera len of ultra wide-angle described in the present embodiment, include successively from thing side to image side：There is negative bending
First lens L1 of folding power；There is the second lens L2 of positive refracting power；There is the 3rd lens L3 of positive refracting power；There is positive flexion
4th lens L4 of power；There is the 5th lens L5 of negative refracting power；There is the 6th lens L6 of positive refracting power.
Wherein：
The thing side S1 of the first lens L1 is convex surface, and image side surface S2 is concave surface；The thing side S3 of the second lens L2 is concave surface,
Image side surface S4 is convex surface；3rd lens L3 has thing side S5 and image side surface S6；4th lens L4 has thing side S7 and image side
Face S8；5th lens L5 has thing side S8 and image side surface S9；The thing side S10 of the 6th lens L6 is convex surface, and image side surface S11 is
Concave surface；Optical filter L7 has thing side S12 and image side surface S13；TV camera len of ultra wide-angle imaging surface S14 position described in the present embodiment
In the image side of optical filter L7, it is available for photo-sensitive cell is installed.
The main design parameters of the TV camera len of ultra wide-angle described in the present embodiment see table 7：
Table 7
| Title | Numerical value |
| The effective focal length of the first lens：f1(mm) | -3.45 |
| The effective focal length of the second lens：f2(mm) | 20.19 |
| The effective focal length of the 3rd lens：f3(mm) | 5.19 |
| The effective focal length of the 4th lens：f4(mm) | 2.01 |
| The effective focal length of the 5th lens：f5(mm) | -2.24 |
| The effective focal length of the 6th lens：f6(mm) | 18.30 |
| The effective focal length of TV camera len of ultra wide-angle：f(mm) | 2.08 |
| Stop value：Fno | 2.20 |
| Angle of half field-of view：HFOV(°) | 85.00 |
| f1/f4 | -1.713 |
| f3/f | 2.499 |
| R8/R9 | 1.000 |
| CT4/CT6 | 1.133 |
| DT21/DT31 | 1.251 |
| SAG11/SAG12 | 0.429 |
| ΣT/TTL | 0.350 |
| R7/R11 | 0.874 |
Wherein：F1 is the effective focal length of the first lens；F3 is the effective focal length of the 3rd lens；F4 is the effective of the 4th lens
Focal length；F is the effective focal length of TV camera len of ultra wide-angle；R7 is the radius of curvature of the 4th lens thing side；R8 is the 4th lens picture
The radius of curvature of side；R9 is the radius of curvature of the 5th lens thing side；R11 is the radius of curvature of the 6th lens thing side；CT4
For center thickness on optical axis for the 4th lens, CT6 is center thickness on optical axis for the 6th lens；DT21 is the second lens thing
The effective radius of side；DT31 is the effective radius of the 3rd lens thing side；SAG11 is the friendship of the first lens thing side and optical axis
Distance on axle o'clock to the effective radius summit of the first lens thing side；SAG12 is the first lens image side surface and optical axis
Distance on the axle to the effective radius summit of the first lens thing side for the intersection point；Σ T is that the first lens are any to the 6th lens
The summation of spacing distance on the countershaft of adjacent two lens；TTL is the first lens thing side to distance on the axle of imaging surface.
For realizing above-mentioned design parameter, the specific design that the TV camera len of ultra wide-angle described in the present embodiment is adopted see table
8：
Table 8
In TV camera len of ultra wide-angle described in the present embodiment non-spherical lens aspherical high order term coefficient (A4, A6, A8,
A10, A12, A14, A16) see table 9：
Table 9
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 8.2514E-03 | -9.2130E-04 | 3.6971E-05 | 2.8686E-06 | -1.5295E-07 | -1.2349E-08 | 7.7801E-10 |
| S2 | 2.2407E-02 | -4.4635E-03 | 8.1698E-03 | -2.1424E-03 | 3.0282E-04 | -9.3913E-05 | -2.6098E-05 |
| S3 | -2.7120E-02 | 2.7675E-02 | -2.7449E-03 | -6.2957E-04 | 1.2950E-04 | -5.4298E-06 | -2.9135E-06 |
| S4 | 4.1166E-02 | 1.6022E-02 | -1.5860E-03 | 2.8661E-03 | -8.9584E-05 | 6.4884E-06 | -1.1855E-06 |
| S5 | 1.8865E-02 | 1.4700E-02 | -1.6690E-02 | 7.4336E-03 | 3.2894E-04 | -2.6990E-11 | 4.0057E-14 |
| S6 | -1.0535E-01 | 5.4558E-02 | -1.7735E-02 | 3.9825E-03 | 1.0707E-09 | 1.5702E-11 | 4.7123E-14 |
| S7 | -6.3917E-02 | 1.4592E-02 | -1.1072E-02 | 6.5329E-04 | -2.2086E-09 | -3.0509E-11 | -1.4295E-12 |
| S9 | -6.4414E-03 | 2.8477E-02 | -1.8170E-02 | 4.7882E-03 | -2.1041E-04 | -5.4191E-05 | 7.3493E-11 |
| S10 | -6.8766E-02 | 1.7435E-02 | -3.3419E-03 | 1.3670E-05 | 3.0225E-05 | 1.2483E-05 | -2.1443E-06 |
| S11 | -4.3814E-02 | -2.3979E-03 | 3.8838E-03 | -9.9365E-04 | 5.6407E-05 | 8.8694E-06 | -9.1608E-07 |
TV camera len of ultra wide-angle described in the present embodiment, not only effective control aberration, astigmatism, improves periphery and contrasts
Degree, obtains preferable image quality, referring to accompanying drawing 12- Figure 15, simultaneously it is achieved that the angle of view and shorter system length,
And Miniaturization Design and good manufacturability can be taken into account.
Example IV：
Referring to accompanying drawing 16, the TV camera len of ultra wide-angle described in the present embodiment, include successively from thing side to image side：There is negative bending
First lens L1 of folding power；There is the second lens L2 of positive refracting power；There is the 3rd lens L3 of positive refracting power；There is positive flexion
4th lens L4 of power；There is the 5th lens L5 of negative refracting power；There is the 6th lens L6 of positive refracting power.
Wherein：The thing side S1 of the first lens L1 is convex surface, and image side surface S2 is concave surface；The thing side S3 of the second lens L2 is
Concave surface, image side surface S4 is convex surface；3rd lens L3 has thing side S5 and image side surface S6；4th lens L4 have thing side S7 and
Image side surface S8；5th lens L5 has thing side S9 and image side surface S10；The thing side S11 of the 6th lens L6 is convex surface, image side surface
S12 is concave surface；Optical filter L7 has thing side S13 and image side surface S14；TV camera len of ultra wide-angle imaging surface described in the present embodiment
S15 is located at the image side of optical filter L7, is available for installing photo-sensitive cell.
The main design parameters of the TV camera len of ultra wide-angle described in the present embodiment see table 10：
Table 10
| Title | Numerical value |
| The effective focal length of the first lens：f1(mm) | -3.40 |
| The effective focal length of the second lens：f2(mm) | 17.72 |
| The effective focal length of the 3rd lens：f3(mm) | 4.68 |
| The effective focal length of the 4th lens：f4(mm) | 2.13 |
| The effective focal length of the 5th lens：f5(mm) | -2.44 |
| The effective focal length of the 6th lens：f6(mm) | 13.62 |
| The effective focal length of TV camera len of ultra wide-angle：f(mm) | 2.14 |
| Stop value：Fno | 2.48 |
| Angle of half field-of view：HFOV(°) | 75.00 |
| f1/f4 | -1.596 |
| f3/f | 2.190 |
| R8/R9 | 1.255 |
| CT4/CT6 | 0.874 |
| DT21/DT31 | 1.363 |
| SAG11/SAG12 | 0.456 |
| ΣT/TTL | 0.337 |
| R7/R11 | 1.047 |
Wherein：F1 is the effective focal length of the first lens；F3 is the effective focal length of the 3rd lens；F4 is the effective of the 4th lens
Focal length；F is the effective focal length of TV camera len of ultra wide-angle；R7 is the radius of curvature of the 4th lens thing side；R8 is the 4th lens picture
The radius of curvature of side；R9 is the radius of curvature of the 5th lens thing side；R11 is the radius of curvature of the 6th lens thing side；CT4
For center thickness on optical axis for the 4th lens, CT6 is center thickness on optical axis for the 6th lens；DT21 is the second lens thing
The effective radius of side；DT31 is the effective radius of the 3rd lens thing side；SAG11 is the friendship of the first lens thing side and optical axis
Distance on axle o'clock to the effective radius summit of the first lens thing side；SAG12 is the first lens image side surface and optical axis
Distance on the axle to the effective radius summit of the first lens thing side for the intersection point；Σ T is that the first lens are any to the 6th lens
The summation of spacing distance on the countershaft of adjacent two lens；TTL is the first lens thing side to distance on the axle of imaging surface.
For realizing above-mentioned design parameter, the specific design that the TV camera len of ultra wide-angle described in the present embodiment is adopted see table
11：
Table 11
| Face number | Surface type | Radius of curvature | Thickness | Material | Circular cone coefficient |
| OBJ | Sphere | Infinite | Infinite | ||
| S1 | Aspherical | 11.6689 | 0.3724 | 1.53/55.8 | 0.0000 |
| S2 | Aspherical | 1.5639 | 1.3290 | 0.0000 | |
| S3 | Aspherical | 1000.0000 | 0.7107 | 1.64/23.5 | 0.0000 |
| S4 | Aspherical | -11.5763 | 0.2636 | 0.0000 | |
| S5 | Aspherical | 3.8785 | 0.6122 | 1.52/64.2 | 0.0000 |
| S6 | Aspherical | -7.1075 | 0.0612 | 0.0000 | |
| STO | Sphere | Infinite | 0.3405 | ||
| S7 | Aspherical | 2.7849 | 0.9468 | 1.52/64.2 | 0.0000 |
| S8 | Aspherical | -1.7647 | 0.2157 | 0.0000 | |
| S9 | Aspherical | -1.4064 | 0.3167 | 1.65/21.5 | 0.0000 |
| S10 | Aspherical | -12.2619 | 0.4112 | 0.0000 | |
| S11 | Aspherical | 2.6591 | 1.0830 | 1.52/64.2 | 0.0000 |
| S12 | Aspherical | 3.5420 | 0.3653 | 0.0000 | |
| S13 | Sphere | Infinite | 0.2100 | 1.52/64.2 | |
| S14 | Sphere | Infinite | 0.5400 | ||
| S15 | Sphere | Infinite |
In TV camera len of ultra wide-angle described in the present embodiment non-spherical lens aspherical high order term coefficient (A4, A6, A8,
A10, A12, A14, A16) see table 12：
Table 12
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -9.7683E-05 | -1.5935E-04 | 2.6789E-05 | 1.2010E-06 | -1.9028E-07 | -9.7484E-09 | 9.9532E-10 |
| S2 | 2.3165E-03 | -8.6038E-04 | 5.4475E-03 | -2.1399E-03 | 3.3471E-04 | -8.3078E-05 | -7.3872E-06 |
| S3 | -2.8426E-02 | 1.5099E-02 | -6.6400E-03 | -2.0304E-04 | 1.5297E-04 | 8.1732E-06 | 2.5978E-05 |
| S4 | 5.0800E-02 | 5.7372E-03 | 2.3055E-03 | 4.9859E-03 | 4.8593E-04 | -2.6378E-04 | -7.4157E-04 |
| S5 | 5.0408E-02 | -5.4283E-03 | -8.3387E-03 | 1.4721E-02 | 6.7096E-04 | -3.6084E-03 | -3.1705E-03 |
| S6 | -8.7525E-02 | 3.0765E-02 | -2.1413E-04 | -7.1085E-04 | 2.1468E-04 | -4.4861E-05 | -2.0254E-03 |
| S7 | -8.7127E-02 | -1.0902E-02 | 1.9465E-03 | -4.4409E-02 | -1.4294E-03 | 2.0983E-03 | 9.5615E-03 |
| S8 | -1.0675E-02 | -9.4686E-04 | -2.0778E-02 | -7.7697E-04 | 8.4560E-04 | 7.4781E-04 | 1.0731E-03 |
| S9 | 9.3006E-02 | 1.8208E-02 | -5.3281E-02 | 3.6228E-02 | -3.3502E-05 | -3.0381E-04 | -5.2327E-04 |
| S10 | 6.8546E-02 | -1.1295E-02 | -4.2571E-03 | 1.9413E-03 | -1.5025E-04 | -1.1656E-05 | -4.7465E-06 |
| S11 | -5.5841E-02 | 1.2284E-02 | -2.4020E-03 | 1.1547E-04 | 3.2984E-06 | 6.1661E-06 | -9.0351E-07 |
| S12 | -1.9323E-02 | -5.6593E-03 | 3.2467E-03 | -6.5699E-04 | 6.2794E-06 | 1.1014E-05 | -8.4080E-07 |
TV camera len of ultra wide-angle described in the present embodiment, not only effective control aberration, astigmatism, improves periphery and contrasts
Degree, obtains preferable image quality, referring to accompanying drawing 17- Figure 20, simultaneously it is achieved that the angle of view and shorter system length,
And Miniaturization Design and good manufacturability can be taken into account.
Embodiment five：
Referring to accompanying drawing 21, the TV camera len of ultra wide-angle described in the present embodiment, include successively from thing side to image side：There is negative bending
First lens L1 of folding power；There is the second lens L2 of positive refracting power；There is the 3rd lens L3 of positive refracting power；There is positive flexion
4th lens L4 of power；There is the 5th lens L5 of negative refracting power；There is the 6th lens L6 of positive refracting power.
Wherein：The thing side S1 of the first lens L1 is convex surface, and image side surface S2 is concave surface；The thing side S3 of the second lens L2 is
Concave surface, image side surface S4 is convex surface；3rd lens L3 has thing side S5 and image side surface S6；4th lens L4 have thing side S7 and
Image side surface S8；5th lens L5 has thing side S9 and image side surface S10；The thing side S11 of the 6th lens L6 is convex surface, image side surface
S12 is concave surface；Optical filter L7 has thing side S13 and image side surface S14；TV camera len of ultra wide-angle imaging surface described in the present embodiment
S15 is located at the image side of optical filter L7, is available for installing photo-sensitive cell.
The main design parameters of the TV camera len of ultra wide-angle described in the present embodiment see table 13：
Table 13
Wherein：F1 is the effective focal length of the first lens；F3 is the effective focal length of the 3rd lens；F4 is the effective of the 4th lens
Focal length；F is the effective focal length of TV camera len of ultra wide-angle；R7 is the radius of curvature of the 4th lens thing side；R8 is the 4th lens picture
The radius of curvature of side；R9 is the radius of curvature of the 5th lens thing side；R11 is the radius of curvature of the 6th lens thing side；CT4
For center thickness on optical axis for the 4th lens, CT6 is center thickness on optical axis for the 6th lens；DT21 is the second lens thing
The effective radius of side；DT31 is the effective radius of the 3rd lens thing side；SAG11 is the friendship of the first lens thing side and optical axis
Distance on axle o'clock to the effective radius summit of the first lens thing side；SAG12 is the first lens image side surface and optical axis
Distance on the axle to the effective radius summit of the first lens thing side for the intersection point；Σ T is that the first lens are any to the 6th lens
The summation of spacing distance on the countershaft of adjacent two lens；TTL is the first lens thing side to distance on the axle of imaging surface.
For realizing above-mentioned design parameter, the specific design that the TV camera len of ultra wide-angle described in the present embodiment is adopted see table
14：
Table 14
| Face number | Surface type | Radius of curvature | Thickness | Material | Circular cone coefficient |
| OBJ | Sphere | Infinite | Infinite | ||
| S1 | Aspherical | 9.4890 | 0.4087 | 1.53/55.8 | 0.0000 |
| S2 | Aspherical | 1.5573 | 1.3742 | 0.0000 | |
| S3 | Aspherical | 200.0000 | 0.7768 | 1.64/23.5 | 0.0000 |
| S4 | Aspherical | 500.0000 | 0.2699 | 0.0000 | |
| S5 | Aspherical | 3.7914 | 0.6017 | 1.52/64.2 | 0.0000 |
| S6 | Aspherical | -6.8412 | 0.0569 | 0.0000 | |
| STO | Sphere | Infinite | 0.3395 | ||
| S7 | Aspherical | 2.7225 | 0.9806 | 1.52/64.2 | 0.0000 |
| S8 | Aspherical | -1.7511 | 0.2260 | 0.0000 | |
| S9 | Aspherical | -1.4132 | 0.3672 | 1.65/21.5 | 0.0000 |
| S10 | Aspherical | -10.7309 | 0.4885 | 0.0000 | |
| S11 | Aspherical | 2.5774 | 1.1445 | 1.52/64.2 | 0.0000 |
| S12 | Aspherical | 4.0069 | 0.4232 | 0.0000 | |
| S13 | Sphere | Infinite | 0.2100 | 1.52/64.2 | |
| S14 | Sphere | Infinite | 0.5400 | ||
| S15 | Sphere | Infinite |
In TV camera len of ultra wide-angle described in the present embodiment non-spherical lens aspherical high order term coefficient (A4, A6, A8,
A10, A12, A14, A16) see table 15：
Table 15
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -1.2073E-04 | -1.6690E-04 | 2.6021E-05 | 1.1213E-06 | -1.9874E-07 | -1.0652E-08 | 8.9900E-10 |
| S2 | 1.0255E-03 | -1.3948E-03 | 5.1986E-03 | -2.2249E-03 | 3.2068E-04 | -8.2993E-05 | -6.1624E-06 |
| S3 | -2.7753E-02 | 1.5135E-02 | -6.6243E-03 | -1.8657E-04 | 1.6736E-04 | 1.9034E-05 | 3.3481E-05 |
| S4 | 4.9139E-02 | 5.4851E-03 | 1.9810E-03 | 4.5566E-03 | 3.6178E-05 | -6.9560E-04 | -1.1431E-03 |
| S5 | 5.1255E-02 | -6.3164E-03 | -9.1600E-03 | 1.4623E-02 | 1.2158E-03 | -2.5998E-03 | -1.8191E-03 |
| S6 | -8.8447E-02 | 3.1752E-02 | 2.0892E-03 | 2.2568E-03 | 3.2526E-03 | 2.4740E-03 | -7.4127E-04 |
| S7 | -8.6126E-02 | -1.1914E-02 | 9.3123E-04 | -4.4798E-02 | -1.2023E-03 | 2.8300E-03 | 1.0721E-02 |
| S8 | -1.1302E-02 | -7.8078E-04 | -2.0767E-02 | -8.3086E-04 | 7.6972E-04 | 6.6627E-04 | 9.9368E-04 |
| S9 | 9.3728E-02 | 1.8249E-02 | -5.3278E-02 | 3.6242E-02 | -7.1526E-06 | -2.7107E-04 | -4.8960E-04 |
| S10 | 6.8470E-02 | -1.1247E-02 | -4.2340E-03 | 1.9490E-03 | -1.4860E-04 | -1.1885E-05 | -5.3293E-06 |
| S11 | -5.3961E-02 | 1.2337E-02 | -2.4049E-03 | 1.1391E-04 | 3.2984E-06 | 6.0652E-06 | -9.2578E-07 |
| S12 | -1.7384E-02 | -5.6593E-03 | 3.2563E-03 | -6.5587E-04 | 6.4412E-06 | 1.1038E-05 | -8.3708E-07 |
TV camera len of ultra wide-angle described in the present embodiment, not only effective control aberration, astigmatism, improves periphery and contrasts
Degree, obtains preferable image quality, referring to accompanying drawing 22- Figure 25, simultaneously it is achieved that the angle of view and shorter system length,
And Miniaturization Design and good manufacturability can be taken into account.
Embodiment six：
Referring to accompanying drawing 26, the TV camera len of ultra wide-angle described in the present embodiment, include successively from thing side to image side：There is negative bending
First lens L1 of folding power；There is the second lens L2 of positive refracting power；There is the 3rd lens L3 of positive refracting power；There is positive flexion
4th lens L4 of power；There is the 5th lens L5 of negative refracting power；There is the 6th lens L6 of positive refracting power.
Wherein：The thing side S1 of the first lens L1 is convex surface, and image side surface S2 is concave surface；The thing side S3 of the second lens L2 is
Concave surface, image side surface S4 is convex surface；3rd lens L3 has thing side S5 and image side surface S6；4th lens L4 have thing side S7 and
Image side surface S8；5th lens L5 has thing side S9 and image side surface S10；The thing side S11 of the 6th lens L6 is convex surface, image side surface
S12 is concave surface；Optical filter L7 has thing side S13 and image side surface S14；TV camera len of ultra wide-angle imaging surface described in the present embodiment
S15 is located at the image side of optical filter L7, is available for installing photo-sensitive cell.
The main design parameters of the TV camera len of ultra wide-angle described in the present embodiment see table 16：
Table 16
| Title | Numerical value |
| The effective focal length of the first lens：f1(mm) | -3.38 |
| The effective focal length of the second lens：f2(mm) | 39.24 |
| The effective focal length of the 3rd lens：f3(mm) | 4.94 |
| The effective focal length of the 4th lens：f4(mm) | 2.13 |
| The effective focal length of the 5th lens：f5(mm) | -2.37 |
| The effective focal length of the 6th lens：f6(mm) | 13.22 |
| The effective focal length of TV camera len of ultra wide-angle：f(mm) | 2.09 |
| Stop value：Fno | 2.46 |
| Angle of half field-of view：HFOV(°) | 83.00 |
| f1/f4 | -1.586 |
| f3/f | 2.359 |
| R8/R9 | 1.353 |
| CT4/CT6 | 1.001 |
| DT21/DT31 | 1.319 |
| SAG11/SAG12 | 0.620 |
| ΣT/TTL | 0.365 |
| R7/R11 | 0.928 |
Wherein：F1 is the effective focal length of the first lens；F3 is the effective focal length of the 3rd lens；F4 is the effective of the 4th lens
Focal length；F is the effective focal length of TV camera len of ultra wide-angle；R7 is the radius of curvature of the 4th lens thing side；R8 is the 4th lens picture
The radius of curvature of side；R9 is the radius of curvature of the 5th lens thing side；R11 is the radius of curvature of the 6th lens thing side；CT4
For center thickness on optical axis for the 4th lens, CT6 is center thickness on optical axis for the 6th lens；DT21 is the second lens thing
The effective radius of side；DT31 is the effective radius of the 3rd lens thing side；SAG11 is the friendship of the first lens thing side and optical axis
Distance on axle o'clock to the effective radius summit of the first lens thing side；SAG12 is the first lens image side surface and optical axis
Distance on the axle to the effective radius summit of the first lens thing side for the intersection point；Σ T is that the first lens are any to the 6th lens
The summation of spacing distance on the countershaft of adjacent two lens；TTL is the first lens thing side to distance on the axle of imaging surface.
For realizing above-mentioned design parameter, the specific design that the TV camera len of ultra wide-angle described in the present embodiment is adopted see table
17：
Table 17
In TV camera len of ultra wide-angle described in the present embodiment non-spherical lens aspherical high order term coefficient (A4, A6, A8,
A10, A12, A14, A16) see table 18：
Table 18
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 8.5532E-04 | -1.8148E-04 | 2.8727E-05 | 1.3449E-06 | -1.7901E-07 | -9.0256E-09 | 1.0445E-09 |
| S2 | -3.0038E-03 | -4.0182E-03 | 5.0862E-03 | -2.1021E-03 | 3.1036E-04 | -1.5037E-04 | -6.8863E-05 |
| S3 | -2.6204E-02 | 2.0398E-02 | -5.1272E-03 | -2.5097E-04 | 1.5677E-04 | -6.6914E-06 | -4.1289E-06 |
| S4 | 5.7317E-02 | 5.8908E-03 | -2.5114E-03 | 4.1822E-03 | -4.8204E-04 | -3.7583E-04 | -6.0861E-04 |
| S5 | 4.0881E-02 | -8.2233E-03 | -1.1507E-02 | 1.3185E-02 | 7.0326E-04 | 3.5938E-04 | -1.3961E-03 |
| S6 | -8.4800E-02 | 2.3267E-02 | 2.3952E-03 | 3.3865E-03 | 1.4595E-03 | -1.8739E-04 | -3.9336E-03 |
| S7 | -7.4990E-02 | -1.6231E-02 | 3.9205E-03 | -3.5390E-02 | 7.6332E-04 | -7.0611E-05 | -1.7897E-03 |
| S8 | -1.7717E-02 | -4.9430E-03 | -1.0408E-02 | -4.1823E-03 | -3.2738E-04 | 1.8312E-04 | 5.0425E-04 |
| S9 | 8.0359E-02 | 2.1434E-02 | -5.3770E-02 | 3.5752E-02 | -2.0150E-04 | -3.9861E-04 | -5.1279E-04 |
| S10 | 6.8261E-02 | -1.2355E-02 | -4.1067E-03 | 2.1343E-03 | -1.2515E-04 | -2.6486E-05 | -1.3202E-05 |
| S11 | -5.5190E-02 | 1.2715E-02 | -2.4015E-03 | 9.6772E-05 | 3.2984E-06 | 6.3539E-06 | -8.7914E-07 |
| S12 | -2.0915E-02 | -5.6593E-03 | 3.2451E-03 | -6.5120E-04 | 6.9698E-06 | 1.1191E-05 | -8.8499E-07 |
TV camera len of ultra wide-angle described in the present embodiment, not only effective control aberration, astigmatism, improves periphery and contrasts
Degree, obtains preferable image quality, referring to accompanying drawing 26- Figure 30, simultaneously it is achieved that the angle of view and shorter system length,
And Miniaturization Design and good manufacturability can be taken into account.
Embodiment seven：
Referring to accompanying drawing 31, the TV camera len of ultra wide-angle described in the present embodiment, include successively from thing side to image side：There is negative bending
First lens L1 of folding power；There is the second lens L2 of positive refracting power；There is the 3rd lens L3 of positive refracting power；There is positive flexion
4th lens L4 of power；There is the 5th lens L5 of negative refracting power；There is the 6th lens L6 of positive refracting power.
Wherein：The thing side S1 of the first lens L1 is convex surface, and image side surface S2 is concave surface；The thing side S3 of the second lens L2 is
Concave surface, image side surface S4 is convex surface；3rd lens L3 has thing side S5 and image side surface S6；4th lens L4 have thing side S7 and
Image side surface S8；5th lens L5 has thing side S9 and image side surface S10；The thing side S11 of the 6th lens L6 is convex surface, image side surface
S12 is concave surface；Optical filter L7 has thing side S13 and image side surface S14；TV camera len of ultra wide-angle imaging surface described in the present embodiment
S15 is located at the image side of optical filter L7, is available for installing photo-sensitive cell.
The main design parameters of the TV camera len of ultra wide-angle described in the present embodiment see table 19：
Table 19
| Title | Numerical value |
| The effective focal length of the first lens：f1(mm) | -3.41 |
| The effective focal length of the second lens：f2(mm) | 37.41 |
| The effective focal length of the 3rd lens：f3(mm) | 5.17 |
| The effective focal length of the 4th lens：f4(mm) | 2.13 |
| The effective focal length of the 5th lens：f5(mm) | -2.41 |
| The effective focal length of the 6th lens：f6(mm) | 13.05 |
| The effective focal length of TV camera len of ultra wide-angle：f(mm) | 2.13 |
| Stop value：Fno | 2.49 |
| Angle of half field-of view：HFOV(°) | 75.00 |
| f1/f4 | -1.604 |
| f3/f | 2.423 |
| R8/R9 | 1.332 |
| CT4/CT6 | 0.959 |
| DT21/DT31 | 1.368 |
| SAG11/SAG12 | 0.629 |
| ΣT/TTL | 0.474 |
| R7/R11 | 0.946 |
Wherein：F1 is the effective focal length of the first lens；F3 is the effective focal length of the 3rd lens；F4 is the effective of the 4th lens
Focal length；F is the effective focal length of TV camera len of ultra wide-angle；R7 is the radius of curvature of the 4th lens thing side；R8 is the 4th lens picture
The radius of curvature of side；R9 is the radius of curvature of the 5th lens thing side；R11 is the radius of curvature of the 6th lens thing side；CT4
For center thickness on optical axis for the 4th lens, CT6 is center thickness on optical axis for the 6th lens；DT21 is the second lens thing
The effective radius of side；DT31 is the effective radius of the 3rd lens thing side；SAG11 is the friendship of the first lens thing side and optical axis
Distance on axle o'clock to the effective radius summit of the first lens thing side；SAG12 is the first lens image side surface and optical axis
Distance on the axle to the effective radius summit of the first lens thing side for the intersection point；Σ T is that the first lens are any to the 6th lens
The summation of spacing distance on the countershaft of adjacent two lens；TTL is the first lens thing side to distance on the axle of imaging surface.
For realizing above-mentioned design parameter, the specific design that the TV camera len of ultra wide-angle described in the present embodiment is adopted see table
20：
Table 20
| Face number | Surface type | Radius of curvature | Thickness | Material | Circular cone coefficient |
| OBJ | Sphere | Infinite | Infinite | ||
| S1 | Aspherical | 13.3244 | 0.3425 | 1.53/55.8 | 0.0000 |
| S2 | Aspherical | 1.5917 | 1.3846 | 0.0000 | |
| S3 | Aspherical | -3.3202 | 0.7762 | 1.64/23.5 | 0.0000 |
| S4 | Aspherical | -3.1871 | 0.2131 | 0.0000 | |
| S5 | Aspherical | 2.6787 | 0.4624 | 1.52/64.2 | 0.0000 |
| S6 | Aspherical | 53.5000 | 0.0976 | 0.0000 | |
| STO | Sphere | Infinite | 0.4353 | ||
| S7 | Aspherical | 2.5313 | 1.0053 | 1.52/64.2 | 0.0000 |
| S8 | Aspherical | -1.8360 | 0.2289 | 0.0000 | |
| S9 | Aspherical | -1.3788 | 0.3142 | 1.65/21.5 | 0.0000 |
| S10 | Aspherical | -12.2406 | 0.5606 | 0.0000 | |
| S11 | Aspherical | 2.6746 | 1.0487 | 1.52/64.2 | 0.0000 |
| S12 | Aspherical | 3.6985 | 0.3960 | 0.0000 | |
| S13 | Sphere | Infinite | 0.2100 | 1.52/64.2 | |
| S14 | Sphere | Infinite | 0.5400 | ||
| S15 | Sphere | Infinite |
In TV camera len of ultra wide-angle described in the present embodiment non-spherical lens aspherical high order term coefficient (A4, A6, A8,
A10, A12, A14, A16) see table 21：
Table 21
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 7.9274E-04 | -1.9223E-04 | 2.9009E-05 | 1.5016E-06 | -1.6966E-07 | -9.2672E-09 | 8.8946E-10 |
| S2 | -7.2014E-03 | -4.4849E-03 | 5.0957E-03 | -2.0538E-03 | 3.4240E-04 | -1.3681E-04 | -6.6537E-05 |
| S3 | -2.6423E-02 | 2.0182E-02 | -5.4328E-03 | -4.1935E-04 | 9.7213E-05 | -9.8508E-05 | 5.9700E-05 |
| S4 | 5.6465E-02 | 4.2647E-03 | -4.1987E-03 | 3.5183E-03 | -1.3715E-03 | -1.1302E-03 | -3.2667E-04 |
| S5 | 4.1070E-02 | -8.8281E-03 | -1.2124E-02 | 1.2927E-02 | 8.8822E-06 | -4.1083E-03 | -1.7029E-02 |
| S6 | -8.5060E-02 | 2.4637E-02 | 4.6413E-03 | 4.9973E-03 | -7.1088E-05 | -9.1145E-03 | -2.7580E-02 |
| S7 | -7.5449E-02 | -1.6145E-02 | 5.2637E-03 | -3.4229E-02 | 9.4336E-04 | -4.4071E-04 | -1.0603E-03 |
| S8 | -1.6585E-02 | -4.7477E-03 | -1.0768E-02 | -4.3075E-03 | -2.1200E-04 | 4.0166E-04 | 7.2038E-04 |
| S9 | 8.0582E-02 | 2.1420E-02 | -5.3882E-02 | 3.5582E-02 | -3.7000E-04 | -5.4787E-04 | -6.1051E-04 |
| S10 | 6.8431E-02 | -1.2242E-02 | -4.0797E-03 | 2.1342E-03 | -1.3114E-04 | -3.2461E-05 | -1.7880E-05 |
| S11 | -5.5109E-02 | 1.2729E-02 | -2.4038E-03 | 9.4458E-05 | 3.2984E-06 | 6.3445E-06 | -8.7464E-07 |
| S12 | -2.0874E-02 | -5.6593E-03 | 3.2450E-03 | -6.5122E-04 | 6.9641E-06 | 1.1191E-05 | -8.8505E-07 |
TV camera len of ultra wide-angle described in the present embodiment, not only effective control aberration, astigmatism, improves periphery and contrasts
Degree, obtains preferable image quality, referring to accompanying drawing 32- Figure 35, simultaneously it is achieved that the angle of view and shorter system length,
And Miniaturization Design and good manufacturability can be taken into account.
Embodiment eight：
Referring to accompanying drawing 36, the TV camera len of ultra wide-angle described in the present embodiment, include successively from thing side to image side：There is negative bending
First lens L1 of folding power；There is the second lens L2 of positive refracting power；There is the 3rd lens L3 of positive refracting power；There is positive flexion
4th lens L4 of power；There is the 5th lens L5 of negative refracting power；There is the 6th lens L6 of positive refracting power.
Wherein：The thing side S1 of the first lens L1 is convex surface, and image side surface S2 is concave surface；The thing side S3 of the second lens L2 is
Concave surface, image side surface S4 is convex surface；3rd lens L3 has thing side S5 and image side surface S6；4th lens L4 have thing side S7 and
Image side surface S8；5th lens L5 has thing side S9 and image side surface S10；The thing side S11 of the 6th lens L6 is convex surface, image side surface
S12 is concave surface；Optical filter L7 has thing side S13 and image side surface S14；TV camera len of ultra wide-angle imaging surface described in the present embodiment
S15 is located at the image side of optical filter L7, is available for installing photo-sensitive cell.
The main design parameters of the TV camera len of ultra wide-angle described in the present embodiment see table 22：
Table 22
Wherein：F1 is the effective focal length of the first lens；F3 is the effective focal length of the 3rd lens；F4 is the effective of the 4th lens
Focal length；F is the effective focal length of TV camera len of ultra wide-angle；R8 is the radius of curvature of the 4th lens image side surface；R9 is the 5th lens thing
The radius of curvature of side；CT4 is center thickness on optical axis for the 4th lens, and CT6 is that center on optical axis for the 6th lens is thick
Degree；DT21 is the effective radius of the second lens thing side；DT31 is the effective radius of the 3rd lens thing side；SAG11 is first
Distance on the axle to the effective radius summit of the first lens thing side for the intersection point of lens thing side and optical axis；SAG12 is the
Distance on the axle to the effective radius summit of the first lens thing side for the intersection point of one lens image side surface and optical axis；Σ T is the
One lens to spacing distance on the countershaft of the 6th lens arbitrary neighborhood two lens summation；TTL is the first lens thing side to one-tenth
Distance on the axle of image planes.
For realizing above-mentioned design parameter, the specific design that the TV camera len of ultra wide-angle described in the present embodiment is adopted see table
23：
Table 23
| Face number | Surface type | Radius of curvature | Thickness | Material | Circular cone coefficient |
| OBJ | Sphere | Infinite | Infinite | ||
| S1 | Aspherical | 8.6383 | 0.3008 | 1.53/55.8 | 0.0000 |
| S2 | Aspherical | 1.7894 | 1.4891 | 0.0000 | |
| S3 | Aspherical | -3.5175 | 0.8842 | 1.64/23.5 | 0.0000 |
| S4 | Aspherical | -3.0046 | 0.1433 | 0.0000 | |
| STO | Aspherical | 4.4196 | 0.4151 | 1.52/64.2 | 0.0000 |
| S5 | Aspherical | -4.9283 | 0.0526 | 0.0000 | |
| S6 | Sphere | Infinite | 0.3723 | ||
| S7 | Aspherical | -500.0000 | 1.0990 | 1.52/64.2 | 0.0000 |
| S8 | Aspherical | -1.4564 | 0.2442 | 0.0000 | |
| S9 | Aspherical | -1.4095 | 0.3207 | 1.65/21.5 | 0.0000 |
| S10 | Aspherical | -7.6932 | 0.6567 | 0.0000 | |
| S11 | Aspherical | 2.6154 | 1.1952 | 1.52/64.2 | 0.0000 |
| S12 | Aspherical | 4.9280 | 0.5594 | 0.0000 | |
| S13 | Sphere | Infinite | 0.2100 | 1.52/64.2 | |
| S14 | Sphere | Infinite | 0.5400 | ||
| S15 | Sphere | Infinite |
In TV camera len of ultra wide-angle described in the present embodiment non-spherical lens aspherical high order term coefficient (A4, A6, A8,
A10, A12, A14, A16) see table 24：
Table 24
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -1.0806E-04 | -2.3098E-04 | 2.8621E-05 | 1.3403E-06 | -2.0404E-07 | -1.4287E-08 | 2.3085E-10 |
| S2 | 3.0166E-03 | 4.8426E-04 | 7.0555E-03 | -1.5839E-03 | 4.2351E-04 | -1.1805E-04 | -5.0561E-05 |
| S3 | -2.5655E-02 | 2.0509E-02 | -5.6550E-03 | -5.1579E-04 | 1.0286E-04 | 4.6114E-05 | 8.3954E-05 |
| S4 | 5.7965E-02 | 3.5004E-03 | -3.1941E-03 | 5.0744E-03 | 4.8027E-04 | -3.5945E-05 | -9.0205E-04 |
| S5 | 3.7760E-02 | -1.0386E-02 | -1.1962E-02 | 1.0944E-02 | -9.5631E-04 | -5.8072E-03 | -6.1084E-03 |
| S6 | -8.0618E-02 | 2.4755E-02 | -5.9566E-04 | 8.2744E-04 | 4.8333E-03 | 1.2562E-02 | 1.8146E-02 |
| S7 | -8.5969E-02 | -2.7596E-02 | 3.2781E-03 | -2.7977E-02 | 6.1735E-03 | 3.1502E-03 | 5.1564E-02 |
| S8 | -1.3347E-02 | 2.7076E-03 | -4.2919E-03 | -7.1164E-04 | 1.1861E-03 | 5.0690E-04 | 1.2926E-04 |
| S9 | 8.8503E-02 | 2.0491E-02 | -5.6609E-02 | 3.3426E-02 | -1.5968E-03 | -9.7978E-04 | -5.0703E-04 |
| S10 | 6.3064E-02 | -1.2347E-02 | -3.8196E-03 | 2.2764E-03 | -8.5468E-05 | -2.9287E-05 | -2.7773E-05 |
| S11 | -5.6943E-02 | 1.2437E-02 | -2.4311E-03 | 9.8862E-05 | 3.2984E-06 | 6.3574E-06 | -8.7880E-07 |
| S12 | -2.2575E-02 | -5.6593E-03 | 3.2480E-03 | -6.5025E-04 | 7.4266E-06 | 1.1213E-05 | -8.8409E-07 |
TV camera len of ultra wide-angle described in the present embodiment, not only effective control aberration, astigmatism, improves periphery and contrasts
Degree, obtains preferable image quality, referring to accompanying drawing 37- Figure 40, simultaneously it is achieved that the angle of view and shorter system length,
And Miniaturization Design and good manufacturability can be taken into account.
Above example is only the preferable specific embodiment lifted for absolutely proving TV camera len of ultra wide-angle of the present invention,
It is not intended to limit protection scope of the present invention.The equivalent substitute that those skilled in the art are made on the basis of the present invention
Or conversion, all within protection scope of the present invention.The content that protection scope of the present invention is recorded by claims is defined.
Claims (10)
1. a kind of TV camera len of ultra wide-angle it is characterised in that：Comprised successively to image side by thing side：
There are the first lens of negative refracting power；
There are the second lens of positive refracting power,
There are the 3rd lens of positive refracting power；
There are the 4th lens of positive refracting power；
There are the 5th lens of negative refracting power；
There are the 6th lens of positive refracting power, its thing side is convex surface, image side surface is concave surface；
Meet following relationship simultaneously：-2<f1/f4<- 1.5, wherein, f1 is the effective focal length of the first lens；F4 is the 4th lens
Effective focal length.
2. TV camera len of ultra wide-angle as claimed in claim 1 is it is characterised in that meet following relationship：1.8<f3/f<3, its
In, f3 is the effective focal length of the 3rd lens；F is the effective focal length of TV camera len of ultra wide-angle.
3. TV camera len of ultra wide-angle as claimed in claim 1 is it is characterised in that meet following relationship：1≤R8/R9<1.5,
Wherein, R8 is the radius of curvature of the 4th lens image side surface；R9 is the radius of curvature of the 5th lens thing side.
4. TV camera len of ultra wide-angle as claimed in claim 1 is it is characterised in that meet following relationship：0.8<CT4/CT6<
1.2, wherein, CT4 is center thickness on optical axis for the 4th lens, and CT6 is center thickness on optical axis for the 6th lens.
5. TV camera len of ultra wide-angle as claimed in claim 1 is it is characterised in that meet following relationship：1<DT21/DT31<
1.5, wherein, DT21 is the effective radius of the second lens thing side；DT31 is the effective radius of the 3rd lens thing side.
6. TV camera len of ultra wide-angle as claimed in claim 1 is it is characterised in that meet following relationship：0.4<SAG11/
SAG12<0.7；Wherein, SAG11 is the effective radius top of the intersection point of the first lens thing side and optical axis to the first lens thing side
Distance on axle between point；SAG12 is the effective radius of the intersection point of the first lens image side surface and optical axis to the first lens thing side
Distance on axle between summit.
7. TV camera len of ultra wide-angle as claimed in claim 1 is it is characterised in that meet following relationship：0.2<ΣT/TTL<
0.5, wherein, Σ T is the summation to spacing distance on the countershaft of the 6th lens arbitrary neighborhood two lens for first lens；TTL is the
One lens thing side is to distance on the axle of imaging surface.
8. TV camera len of ultra wide-angle as claimed in claim 1 is it is characterised in that meet following relationship：0.5<R7/R11<
1.1, wherein, R7 is the radius of curvature of the 4th lens thing side；R11 is the radius of curvature of the 6th lens thing side.
9. TV camera len of ultra wide-angle as claimed in claim 1 it is characterised in that：First lens thing side is convex surface, image side surface
For concave surface.
10. TV camera len of ultra wide-angle as claimed in claim 9 it is characterised in that：Second lens thing side is concave surface, image side surface
For convex surface.
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