CN207488602U - Small-sized wide-angle lens - Google Patents
Small-sized wide-angle lens Download PDFInfo
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- CN207488602U CN207488602U CN201721586059.9U CN201721586059U CN207488602U CN 207488602 U CN207488602 U CN 207488602U CN 201721586059 U CN201721586059 U CN 201721586059U CN 207488602 U CN207488602 U CN 207488602U
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Abstract
The utility model provides a kind of small-sized wide-angle lens, includes successively from object side to imaging surface：The first lens with negative power, object side are that convex surface image side surface is concave surface；The second lens with positive light coke, object side are that convex surface image side surface is convex surface；Third lens with positive light coke, image side surface are convex surface；The 4th lens with negative power, image side surface are concave surface；The 5th lens with positive light coke, image side surface are convex surface；The 6th lens with negative power, object side are convex surface at paraxial place, and image side surface is at least one point of inflexion；Diaphragm is between the first lens and the second lens；All lens are plastic cement aspherical lens；The small-sized wide-angle lens meet conditional：TTL/f ＜ 2.8；Wherein f represents the effective focal length of entire camera lens, and TTL represents the optics overall length of entire camera lens.Meet above-mentioned configuration and advantageously ensure that the miniaturization of the wide-angle lens, while have modified all kinds of aberrations, improve the image quality of camera lens.
Description
Technical field
The utility model is related to optical image technology field, more particularly to a kind of small-sized wide-angle lens.
Background technology
In recent years, as the fast development of miniaturization pick-up lens, application field are also constantly widened, people are to camera lens
Demand also increasingly diversification.And as the Pixel Dimensions diminution of photosensitive element and portable electronic product are sent out to frivolous direction
Exhibition, the high compact wide-angle pick-up lens of image quality are increasingly becoming mainstream in the market.
But existing wide-angle lens, it is impossible to while frivolous and imaging definition is taken into account, part needs can not be met and taken into account
The demand of frivolous and imaging definition user.
Utility model content
The purpose of this utility model is to provide the small-sized wide-angle lens that a kind of structure is small, clarity is high.
A kind of small-sized wide-angle lens, include successively from object side to imaging surface：The first lens with negative power, described
It is concave surface that one lens object side, which is convex surface image side surface,；The second lens with positive light coke, the second lens object side are convex
Image surface side is convex surface；Third lens with positive light coke, the third lens image side surface are convex surface；With negative power
4th lens, the 4th lens image side surface are concave surface；The 5th lens with positive light coke, the 5th lens image side surface are
Convex surface；The 6th lens with negative power, the 6th lens object side are convex surface at paraxial place, and image side surface is at least one
A point of inflexion；Diaphragm is between first lens and second lens；First lens, second lens, institute
It is plastic cement aspherical lens to state third lens, the 4th lens, the 5th lens, the 6th lens；It is described small-sized
Wide-angle lens meets conditional：TTL/f ＜ 2.8；Wherein, f represents the effective focal length of the entire small-sized wide-angle lens, TTL tables
Show the optics overall length of the entire small-sized wide-angle lens.
Above-mentioned small-sized wide-angle lens meet above-mentioned configuration and advantageously ensure that camera lens minimizes, while has modified all kinds of aberrations,
Improve the image quality of camera lens.
Further, the small-sized wide-angle lens meet conditional：Tan (HFOV) ＜ 3, wherein, HFOV represents described small
The maximum angle of half field-of view of type wide-angle lens.
Further, the small-sized wide-angle lens meet conditional：- 0.85 ＜ f1/f2 ＜ -0.65, wherein f1 represent institute
The effective focal length of the first lens is stated, f2 represents the effective focal length of second lens.
Further, the small-sized wide-angle lens meet conditional：-1.85<f6/f<- 1.15, wherein, described in f6 expressions
The effective focal length of 6th lens, f represent the effective focal length of the entire small-sized wide-angle lens.
Further, the small-sized wide-angle lens meet conditional：0.2 ＜ ct5/f ＜ 0.5, wherein, described in ct5 expressions
The center thickness of 5th lens, f represent the effective focal length of the entire small-sized wide-angle lens.
Further, the small-sized wide-angle lens meet conditional：0.45 ＜ SD11/SD62 ＜ 0.65, wherein, SD11 tables
Show the effective radius of the first lens object side, SD62 represents the effective radius of the 6th lens image side surface.
Further, the small-sized wide-angle lens meet conditional：1.60<ND4<1.70 1.60<ND6<1.70, wherein,
ND4 represents the Refractive Index of Material of the 4th lens, and ND6 represents the Refractive Index of Material of the 6th lens.
Further, first lens, second lens, the third lens, the 4th lens, the described 5th
Lens, the 6th lens each aspherical surface shape be satisfied by following equations：
Wherein：Z represents that curved surface leaves distance of the curved surface vertex in optical axis direction, and c represents the curvature on curved surface vertex, and k is represented
Quadratic surface coefficient, h represent optical axis to curved surface distance, B, C, D, E, F, G, H represent respectively quadravalence, six ranks, eight ranks, ten ranks,
Ten second orders, ten quadravalences, 16 rank surface coefficients.
Description of the drawings
Fig. 1 is the small-sized wide-angle lens structure diagram of the utility model embodiment；
Fig. 2 is the curvature of field curve graph of the small-sized wide-angle lens embodiment 1 of the utility model；
Fig. 3 is the distortion curve figure of the small-sized wide-angle lens embodiment 1 of the utility model；
Fig. 4 is penalty kick dygoram on the axis of the small-sized wide-angle lens embodiment 1 of the utility model；
Fig. 5 is the curvature of field curve graph of the small-sized wide-angle lens embodiment 2 of the utility model；
Fig. 6 is the distortion curve figure of the small-sized wide-angle lens embodiment 2 of the utility model；
Fig. 7 is penalty kick dygoram on the axis of the small-sized wide-angle lens embodiment 2 of the utility model；
Fig. 8 is the curvature of field curve graph of the small-sized wide-angle lens embodiment 3 of the utility model；
Fig. 9 is the distortion curve figure of the small-sized wide-angle lens embodiment 3 of the utility model；
Figure 10 is penalty kick dygoram on the axis of the small-sized wide-angle lens embodiment 3 of the utility model；
Figure 11 is the curvature of field curve graph of the small-sized wide-angle lens embodiment 4 of the utility model；
Figure 12 is the distortion curve figure of the small-sized wide-angle lens embodiment 4 of the utility model；
Figure 13 is penalty kick dygoram on the axis of the small-sized wide-angle lens embodiment 4 of the utility model.
Following specific embodiment will further illustrate the utility model with reference to above-mentioned attached drawing.
Specific embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
It states.Several embodiments of the utility model are given in attached drawing.But the utility model can come in many different forms
It realizes, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments makes to the utility model
Disclosure more thorough and comprehensive.
It should be noted that when element is referred to as " being fixedly arranged on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to the technology of the utility model
The normally understood meaning of technical staff in domain is identical.It is only in the term used in the description of the utility model herein
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include
The arbitrary and all combination of one or more relevant Listed Items.
The utility model provides a kind of small-sized wide-angle lens, as shown in Figure 1, the system is wrapped successively from object side to imaging surface
It includes：The first lens L1 with negative power, the second lens L2 with positive light coke, the third lens with positive light coke
L3, the 4th lens L4, the 5th lens L5 with positive light coke, the 6th lens with negative power with negative power
L6, it is concave surface that the first lens L1 objects side, which is convex surface image side surface, and the second lens L2 objects side is that convex surface image side surface is
Convex surface, the third lens L3 image side surfaces be convex surface, the 4th lens L4 image side surfaces be concave surface, the 5th lens L5 image sides
Face is convex surface, and the 6th lens L6 objects side is convex surface at paraxial place, and image side surface is at least one point of inflexion；Diaphragm S3
Between the first lens L1 and the second lens L2；Lens G1 is optical filter.Wherein, (i=1,2,3 ... 16) represent the symbol line to Si
The lens surface of item meaning.
Specifically, the first lens L1, the second lens L2, third lens L3, the 4th lens L4, the 5th lens L5,
Six lens L6 are plastic cement aspherical lens, on the one hand lens system can be made to have preferable light using plastic cement aspherical lens
Performance is learned, on the other hand can realize the miniaturization of system.
The first lens L1 with positive light coke, object side are that convex surface image side surface is concave surface, help to expand camera lens
Field angle obtains more object ranges；The overall length of camera lens can be reduced simultaneously.This architectural characteristic causes the camera lens to meet
Conditional：TTL/f ＜ 2.8 (1),
Wherein f represents the effective focal length of the entire small-sized wide-angle lens, and TTL represents the entire small-sized wide-angle lens
Optics overall length.Conditional (1) embodies system in the case where possessing sufficiently large field angle, can effectively limit the optics of camera lens
Overall length ensures that system has the characteristic of miniaturization.
Specifically, the small-sized wide-angle lens also meet conditional：Tan (HFOV) ＜ 3 (2),
Wherein HFOV represents the maximum angle of half field-of view of the small-sized wide-angle lens.Meet conditional (2) and be advantageously implemented and be
The wide-angle characteristic of system, while can be to avoid the deformation of image problem due to the excessive generation of field angle.
The small-sized wide-angle lens of the utility model also meet conditional：- 0.85 ＜ f1/f2 ＜ -0.65 (3),
Wherein f1 represents the effective focal length of the first lens L1, and f2 represents the effective focal length of the second lens L2.It is full
Sufficient conditional (3) is conducive to reasonably distribute focal power, corrects aberration, improves the image quality of camera lens.
The small-sized wide-angle lens of the utility model meet conditional：-1.85<f6/f<- 1.15 (4),
Wherein f6 represents the effective focal length of the 6th lens L6, and f represents effective coke of the entire small-sized wide-angle lens
Away from.Meet the length that conditional (4) is conducive to reduce camera lens, realize the miniaturization of camera lens, while the emergent light of camera lens can be made
Line angle degree becomes gentle.
The small-sized wide-angle lens of the utility model also meet conditional：0.2 ＜ ct5/f ＜ 0.5 (5),
Wherein ct5 represents the center thickness of the 5th lens L5, and f represents effective coke of the entire small-sized wide-angle lens
Away from.Meet conditional (5) and be conducive to the miniaturization of system, while can guarantee again and meet high-resolution requirement.
The small-sized wide-angle lens of the utility model meet conditional：0.45 ＜ SD11/SD62 ＜ 0.65 (6),
Wherein SD11 represents the effective radius of the first lens L1 objects side, and SD62 represents the 6th lens L6 image sides
The effective radius in face.Meet the bore that conditional (6) can effectively limit camera lens, reduce the production difficulty of camera lens.
The small-sized wide-angle lens of the utility model meet conditional：
1.60<ND4<1.70 1.60<ND6<1.70 (7),
Wherein ND4 represents the Refractive Index of Material of the 4th lens L4, and ND6 represents the material refraction of the 6th lens L6
Rate.Aberration can further be corrected by meeting conditional (7), promote the edge imaging clarity of camera lens.
Each aspherical surface shape of the utility model small-sized wide-angle lens is satisfied by following equation：
Wherein：Z represents that curved surface leaves distance of the curved surface vertex in optical axis direction, and c represents the curvature on curved surface vertex, and k is represented
Quadratic surface coefficient, h represent optical axis to curved surface distance, B, C, D, E, F, G, H represent respectively quadravalence, six ranks, eight ranks, ten ranks,
Ten second orders, ten quadravalences, 16 rank surface coefficients.
Embodiment 1
Referring to Fig. 1, for the small-sized wide-angle lens structure chart that the utility model first embodiment provides, wherein Fig. 2 to figure
4, which respectively show the optical indicatrix of the middle-size and small-size wide-angle lens of the present embodiment, in Fig. 2：X-axis coordinate unit is millimeter, is
Curvature of field value, y-axis coordinate unit is angle, corresponding to the field angle of system；In Fig. 3：X-axis coordinate unit is percentage, for distortion
Value, y-axis coordinate unit is angle, corresponding to the field angle of system.Wherein, in small-sized wide-angle lens each eyeglass design parameter
As shown in table 1-1.
Table 1-1
The aspherical parameter of each lens of the present embodiment is as shown in table 1-2：
Table 1-2
| Surface serial number | k | B | C | D | E | F | G | H |
| S1 | 7.7892 | 3.3961E-01 | -4.9195E-01 | 3.5665E-01 | -1.8498E-01 | 5.3819E-02 | -1.6489E-03 | 0.0000E+00 |
| S2 | 1.5956 | 4.6551E-01 | 3.9214E-01 | -5.4553E+00 | 1.4176E+01 | -1.5095E+01 | -5.6817E+00 | 0.0000E+00 |
| S4 | 4.9534 | 4.6494E-02 | -2.2977E-01 | 1.0012E+00 | -3.2338E+00 | 3.1204E+00 | 2.6342E+00 | 5.9245E+00 |
| S5 | 30.7020 | -3.5370E-01 | -3.6225E-01 | 1.1732E+00 | -2.5099E-01 | -8.0045E-01 | 2.0015E+00 | -3.0415E-01 |
| S6 | -10.0000 | -1.6803E-01 | -2.4818E-01 | -3.9080E-01 | 8.2776E-01 | 1.7885E+00 | -1.1307E+00 | -1.2922E+00 |
| S7 | 0.5189 | 3.4544E-01 | -1.1199E+00 | 5.7392E-01 | 1.4487E-02 | 1.1442E+00 | -5.6408E-01 | -3.5585E-01 |
| S8 | -9.9989 | -2.5900E-01 | 4.0705E-02 | -3.5383E-01 | 4.1814E-01 | 6.0946E-01 | -5.4289E-01 | -3.3703E-01 |
| S9 | -0.2822 | -4.0321E-01 | 4.5392E-01 | -2.5897E-01 | 9.6119E-02 | -9.3374E-02 | 5.8539E-02 | -1.8470E-02 |
| S10 | 8.8648 | 2.2905E-01 | -5.1427E-01 | 4.4044E-01 | -6.1349E-02 | -5.2979E-02 | -8.2177E-03 | 9.5011E-03 |
| S11 | -0.4519 | 4.3923E-01 | -3.6034E-01 | 2.4379E-01 | -8.9228E-02 | 1.7036E-02 | 1.3748E-02 | -1.4155E-03 |
| S12 | -0.4398 | -3.1988E-01 | -3.8027E-02 | 1.2973E-01 | -1.1980E-01 | 5.1936E-02 | -6.9956E-03 | -2.9631E-04 |
| S13 | -3.3505 | -2.2839E-01 | 1.2918E-01 | -5.1543E-02 | 1.1775E-02 | -1.3355E-03 | -6.3633E-06 | 1.3381E-05 |
Embodiment 2
The structure diagram and first embodiment of the small-sized wide-angle lens provided in the utility model second embodiment are on the whole
Identical, it will not be described here, please refers to Fig. 5 to Fig. 7, and which respectively show the optical characteristics of the middle-size and small-size wide-angle lens of the present embodiment
Curve.Wherein, in small-sized wide-angle lens the design parameter of each eyeglass as shown in table 2-1.
Table 2-1
The aspherical parameter of each lens of the present embodiment is as shown in table 2-2：
Table 2-2
| Surface serial number | k | B | C | D | E | F | G | H |
| S1 | 3.0297 | 1.8683E-01 | -4.2173E-01 | 3.7139E-01 | -2.3038E-01 | 5.2965E-02 | 3.0898E-02 | -1.2518E-02 |
| S2 | 0.7407 | 2.8696E-01 | -1.7786E-01 | -3.5379E+00 | 1.0642E+01 | -1.5297E+01 | 3.0014E-02 | 5.2886E+00 |
| S4 | 2.7908 | -5.4481E-02 | -2.1618E-01 | 6.5970E-01 | -3.6963E+00 | -1.4956E+00 | 1.9568E+01 | -1.6241E+01 |
| S5 | -58.7440 | -7.8485E-01 | 1.1305E+00 | -1.8417E+00 | -2.9125E-02 | 4.4431E+00 | 4.4182E+00 | -1.7993E+01 |
| S6 | -9.1979 | -4.8590E-01 | 4.0421E-01 | -1.6849E+00 | 2.8825E-01 | 6.0110E+00 | 3.4423E+00 | -1.1827E+01 |
| S7 | 1.7714 | 5.0267E-02 | -1.1913E+00 | 1.7542E+00 | -3.4535E+00 | 1.1580E+01 | -1.9371E+01 | 1.3817E+01 |
| S8 | 10.0000 | -6.5560E-02 | -1.1252E-01 | -4.6863E-01 | 1.1561E+00 | -4.8051E-01 | -1.3885E+00 | 8.2002E-01 |
| S9 | 1.7040 | -4.0441E-02 | 1.8660E-01 | -3.7387E-01 | 2.0491E-01 | -5.5631E-02 | 6.7615E-02 | -4.1828E-02 |
| S10 | -2.8492 | 5.8087E-01 | -8.4057E-01 | 4.5563E-01 | -3.7411E-03 | -1.3465E-02 | -2.3231E-02 | -7.2594E-04 |
| S11 | -1.2386 | 6.9126E-01 | -5.5335E-01 | 1.7725E-01 | -5.0083E-02 | 2.3987E-02 | 7.3238E-03 | -5.8922E-03 |
| S12 | -4.0864 | -2.1392E-01 | 2.0465E-03 | 1.4599E-01 | -1.4512E-01 | 5.2443E-02 | -3.4918E-03 | -1.0492E-03 |
| S13 | -4.8833 | -1.6983E-01 | 1.0348E-01 | -5.2671E-02 | 1.5279E-02 | -2.3535E-03 | 1.0366E-04 | 1.1148E-05 |
Embodiment 3
The structure diagram and first embodiment of the small-sized wide-angle lens provided in the utility model 3rd embodiment are on the whole
Identical, it will not be described here, please refers to Fig. 8 to Figure 10, and the optics which respectively show the middle-size and small-size wide-angle lens of the present embodiment is special
Linearity curve.Wherein, in small-sized wide-angle lens the design parameter of each eyeglass as shown in table 3-1.
Table 3-1
The aspherical parameter of each lens of the present embodiment is as shown in table 3-2：
Table 3-2
| Surface serial number | k | B | C | D | E | F | G | H |
| S1 | -10.0000 | 3.3112E-01 | -4.9033E-01 | 3.5944E-01 | -1.8570E-01 | 5.1990E-02 | 9.7317E-04 | |
| S2 | 1.6543 | 4.3625E-01 | 2.8304E-01 | -5.2904E+00 | 1.4080E+01 | -1.6823E+01 | -8.0092E+00 | 0.0000E+00 |
| S4 | 5.0495 | 4.7277E-02 | -2.1779E-01 | 8.9950E-01 | -3.2237E+00 | 3.2209E+00 | 2.3904E+00 | 6.9748E+00 |
| S5 | 31.2024 | -3.5105E-01 | -3.4426E-01 | 1.2013E+00 | -3.7385E-01 | -9.0426E-01 | 1.9593E+00 | -8.0679E-01 |
| S6 | -10.0000 | -1.7695E-01 | -2.3422E-01 | -3.9644E-01 | 8.1596E-01 | 1.7847E+00 | -1.1540E+00 | -1.3857E+00 |
| S7 | 0.5927 | 3.3831E-01 | -1.1201E+00 | 5.8540E-01 | 8.5722E-03 | 1.1286E+00 | -5.8754E-01 | -3.5700E-01 |
| S8 | 6.6282 | -2.5895E-01 | 3.6083E-02 | -3.5570E-01 | 4.1743E-01 | 6.0523E-01 | -5.5609E-01 | -3.4766E-01 |
| S9 | -0.3135 | -4.0578E-01 | 4.5740E-01 | -2.6032E-01 | 9.4685E-02 | -9.2829E-02 | 5.9509E-02 | -1.8095E-02 |
| S10 | 10.0001 | 2.2059E-01 | -5.1986E-01 | 4.4122E-01 | -5.9884E-02 | -5.2175E-02 | -7.6853E-03 | 9.9643E-03 |
| S11 | -0.4541 | 4.3341E-01 | -3.6344E-01 | 2.4463E-01 | -8.9645E-02 | 1.6939E-02 | 1.3762E-02 | -1.3486E-03 |
| S12 | -0.4852 | -3.2167E-01 | -3.9160E-02 | 1.2919E-01 | -1.1984E-01 | 5.1998E-02 | -6.9568E-03 | -2.9101E-04 |
| S13 | -3.4416 | -2.3037E-01 | 1.2924E-01 | -5.1463E-02 | 1.1807E-02 | -1.3268E-03 | -6.0132E-06 | 1.2368E-05 |
Embodiment 4
The structure diagram and first embodiment of the small-sized wide-angle lens provided in the utility model fourth embodiment are on the whole
Identical, it will not be described here, please refers to Fig.1 1 to Figure 13, and the optics which respectively show the middle-size and small-size wide-angle lens of the present embodiment is special
Linearity curve, wherein, the design parameter of each eyeglass is as shown in table 4-1 in small-sized wide-angle lens.
Table 4-1
The aspherical parameter of each lens of the present embodiment is as shown in table 4-2：
Table 4-2
| Surface serial number | k | B | C | D | E | F | G | H |
| S1 | -10.0000 | 2.5190E-01 | -4.3035E-01 | 3.5288E-01 | -1.8566E-01 | 6.1383E-02 | -9.3513E-03 | 0.0000E+00 |
| S2 | 1.7239 | 2.8763E-01 | 2.8877E-01 | -4.6369E+00 | 1.2949E+01 | -1.8853E+01 | 1.0208E+01 | 0.0000E+00 |
| S4 | 3.8252 | 3.5997E-02 | -3.1857E-01 | 1.1396E+00 | -2.9877E+00 | 3.0909E+00 | 1.1636E+00 | -1.8916E+00 |
| S5 | 27.6723 | -3.2599E-01 | -3.0134E-01 | 1.1083E+00 | -3.3005E-01 | -9.7789E-01 | 1.7894E+00 | -3.3911E-01 |
| S6 | -10.0000 | -2.0882E-01 | -2.4077E-01 | -5.0723E-01 | 6.8366E-01 | 1.8299E+00 | -9.1466E-01 | -1.0821E+00 |
| S7 | 0.5746 | 3.3426E-01 | -1.1227E+00 | 5.6958E-01 | -2.5513E-02 | 1.0559E+00 | -6.3374E-01 | -2.4460E-01 |
| S8 | 9.9847 | -2.4315E-01 | 1.3145E-01 | -3.7618E-01 | 3.6590E-01 | 5.7881E-01 | -5.3182E-01 | -2.3657E-01 |
| S9 | -0.1104 | -4.0845E-01 | 4.7935E-01 | -2.4238E-01 | 8.8281E-02 | -9.5813E-02 | 6.1303E-02 | -1.6661E-02 |
| S10 | 8.3550 | 1.9550E-01 | -4.9024E-01 | 4.4670E-01 | -5.2538E-02 | -4.9643E-02 | -8.9110E-03 | 6.9161E-03 |
| S11 | -0.4918 | 4.0396E-01 | -3.4130E-01 | 2.4801E-01 | -9.9835E-02 | 1.4968E-02 | 1.3980E-02 | -2.8299E-03 |
| S12 | -0.3753 | -3.1345E-01 | -3.3067E-02 | 1.2462E-01 | -1.2225E-01 | 5.1467E-02 | -6.8209E-03 | -1.6155E-04 |
| S13 | -3.2725 | -2.2261E-01 | 1.2687E-01 | -5.1740E-02 | 1.1812E-02 | -1.2797E-03 | 9.1482E-06 | 7.0620E-06 |
Table 5 is above-mentioned 4 embodiments and its corresponding optical characteristics, including system focal length f, F-number FNO., half field-of-view
Angle HFOV and system overall length TTL, the first focal length of lens f1, the second focal length of lens f2, third focal length of lens f3, the 4th focal length of lens
F4, the 5th focal length of lens f5, the 6th focal length of lens f6.
Table 5
| Optical characteristics | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| f | 1.81 | 1.95 | 1.83 | 1.86 |
| FNO. | 2.21 | 2.44 | 2.51 | 2.00 |
| HFOV | 64.3° | 58.0° | 70.0° | 69.0° |
| TTL(mm) | 4.65 | 4.50 | 4.67 | 4.91 |
| f1 | -2.33 | -2.51 | -2.28 | -2.31 |
| f2 | 3.25 | 3.35 | 3.25 | 2.92 |
| f3 | 1.94 | 1.75 | 1.94 | 2.05 |
| f4 | -3.15 | -3.39 | -3.17 | -2.92 |
| f5 | 1.90 | 2.87 | 1.92 | 1.94 |
| f6 | -2.33 | -3.35 | -2.33 | -2.48 |
Table 6 is above-mentioned 4 embodiments numerical value corresponding with each conditional.
Table 6
| Conditional | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| TTL/f | 2.567 | 2.309 | 2.550 | 2.637 |
| tan(HFOV) | 2.078 | 1.600 | 2.747 | 2.605 |
| f1/f2 | -0.716 | -0.748 | -0.701 | -0.791 |
| f6/f | -1.287 | -1.720 | -1.269 | -1.332 |
| CT5/f | 0.424 | 0.269 | 0.417 | 0.467 |
| SD11/SD62 | 0.509 | 0.571 | 0.498 | 0.538 |
| ND4 | 1.661 | 1.661 | 1.661 | 1.661 |
| ND6 | 1.640 | 1.661 | 1.640 | 1.640 |
Since the data area that spherical aberration curve is put on curvature of field curve, axis is smaller, it is better to represent lens performance, from each implementation
Attached drawing in example can show that the curvature of field range in each embodiment puts the range of spherical aberration between -0.10~+0.10, on axis
Between -0.01~+0.01, illustrate that the curvature of field and spherical aberration in each embodiment can be corrected well.
Embodiment described above only expresses the several embodiments of the utility model, and description is more specific and detailed,
But it should not be interpreted as limiting the scope of the present invention.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (8)
1. a kind of small-sized wide-angle lens, which is characterized in that include successively from object side to imaging surface：
The first lens with negative power, it is concave surface that the first lens object side, which is convex surface image side surface,；
The second lens with positive light coke, it is convex surface that the second lens object side, which is convex surface image side surface,；
Third lens with positive light coke, the third lens image side surface are convex surface；
The 4th lens with negative power, the 4th lens image side surface are concave surface；
The 5th lens with positive light coke, the 5th lens image side surface are convex surface；
The 6th lens with negative power, the 6th lens object side are convex surface at paraxial place, and image side surface is at least one
A point of inflexion；
Diaphragm is between first lens and second lens；
First lens, second lens, the third lens, the 4th lens, the 5th lens, the described 6th
Lens are plastic cement aspherical lens；
The small-sized wide-angle lens meet conditional：TTL/f ＜ 2.8；
Wherein, f represents the effective focal length of the entire small-sized wide-angle lens, and TTL represents the light of the entire small-sized wide-angle lens
Learn overall length.
2. small-sized wide-angle lens according to claim 1, which is characterized in that the small-sized wide-angle lens meet conditional：
Tan (HFOV) ＜ 3, wherein, HFOV represents the maximum angle of half field-of view of the small-sized wide-angle lens.
3. small-sized wide-angle lens according to claim 1, which is characterized in that the small-sized wide-angle lens meet conditional：-
0.85 ＜ f1/f2 ＜ -0.65, wherein f1 represent the effective focal length of first lens, and f2 represents the effective of second lens
Focal length.
4. small-sized wide-angle lens according to claim 1, which is characterized in that the small-sized wide-angle lens meet conditional：-
1.85<f6/f<- 1.15, wherein, f6 represents the effective focal length of the 6th lens, and f represents the entire small-sized wide-angle lens
Effective focal length.
5. small-sized wide-angle lens according to claim 1, which is characterized in that the small-sized wide-angle lens meet conditional：
0.2 ＜ ct5/f ＜ 0.5, wherein, ct5 represents the center thickness of the 5th lens, and f represents the entire small-sized wide-angle lens
Effective focal length.
6. small-sized wide-angle lens according to claim 1, which is characterized in that the small-sized wide-angle lens meet conditional：
0.45 ＜ SD11/SD62 ＜ 0.65, wherein, SD11 represents the effective radius of the first lens object side, described in SD62 is represented
The effective radius of 6th lens image side surface.
7. small-sized wide-angle lens according to claim 1, which is characterized in that the small-sized wide-angle lens meet conditional：
1.60<ND4<1.70 1.60<ND6<1.70, wherein, ND4 represents the Refractive Index of Material of the 4th lens, described in ND6 is represented
The Refractive Index of Material of 6th lens.
8. small-sized wide-angle lens according to claim 1, which is characterized in that first lens, second lens, institute
State third lens, the 4th lens, the 5th lens, the 6th lens aspherical surface shape be satisfied by it is following
Equation：
Wherein：Z represents that curved surface leaves distance of the curved surface vertex in optical axis direction, and c represents the curvature on curved surface vertex, and k represents secondary
Surface coefficients, h represent optical axis to the distance of curved surface, and B, C, D, E, F, G, H represent quadravalence, six ranks, eight ranks, ten ranks, 12 respectively
Rank, ten quadravalences, 16 rank surface coefficients.
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| CN201721586059.9U CN207488602U (en) | 2017-11-23 | 2017-11-23 | Small-sized wide-angle lens |
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| CN201721586059.9U CN207488602U (en) | 2017-11-23 | 2017-11-23 | Small-sized wide-angle lens |
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| CN109100852A (en) * | 2018-07-13 | 2018-12-28 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
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| CN109100852A (en) * | 2018-07-13 | 2018-12-28 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
| WO2020107759A1 (en) * | 2018-11-28 | 2020-06-04 | 宁波舜宇车载光学技术有限公司 | Optical lens and imaging device |
| US11442251B2 (en) | 2018-11-28 | 2022-09-13 | Ningbo Sunny Automotive Optech Co., Ltd. | Optical lens assembly and imaging device |
| CN109375348A (en) * | 2018-12-24 | 2019-02-22 | 浙江舜宇光学有限公司 | Optical imaging system |
| CN109375348B (en) * | 2018-12-24 | 2024-05-14 | 浙江舜宇光学有限公司 | Optical imaging system |
| CN109541783A (en) * | 2019-01-07 | 2019-03-29 | 浙江舜宇光学有限公司 | Pick-up lens |
| CN109541783B (en) * | 2019-01-07 | 2024-04-19 | 浙江舜宇光学有限公司 | Image pickup lens |
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| CN113985585A (en) * | 2021-12-24 | 2022-01-28 | 江西联创电子有限公司 | Infrared confocal lens |
| CN114355583A (en) * | 2022-03-21 | 2022-04-15 | 江西联益光学有限公司 | Optical lens |
| CN114355583B (en) * | 2022-03-21 | 2022-08-12 | 江西联益光学有限公司 | Optical lens |
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