CN207704119U - A kind of camera lens of vehicle-mounted Streaming Media camera - Google Patents
A kind of camera lens of vehicle-mounted Streaming Media camera Download PDFInfo
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- CN207704119U CN207704119U CN201820082134.6U CN201820082134U CN207704119U CN 207704119 U CN207704119 U CN 207704119U CN 201820082134 U CN201820082134 U CN 201820082134U CN 207704119 U CN207704119 U CN 207704119U
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Abstract
The utility model provides a kind of camera lens of vehicle-mounted Streaming Media camera, belongs to camera imaging technical field.It solves the technical problems such as lens distortion is larger of existing camera.Originally the camera lens of vehicle-mounted Streaming Media camera includes successively from object plane to image planes：Focal power is negative the first lens, focal power is positive the second lens, diaphragm, focal power are positive the third lens, focal power is negative the 4th lens, focal power is that positive the 5th lens and focal power are negative the 6th lens；First lens are that focal power is concave spherical surface lens after negative lordosis, second lens are preceding recessed rear convex aspheric surface spherical lens, the third lens are biconvex spherical lens, 4th lens are preceding recessed rear protruding spherical lens, the third lens close microscope group with the 4th lens gluing unit rubber polymer, the focal power of glued microscope group is that just, the 5th lens are non-spherical lens, and the 6th lens are preceding recessed rear convex aspheric surface lens.The utility model has the advantages that reduce optical distortion.
Description
Technical field
The utility model belongs to camera imaging technical field, is related to a kind of camera lens of vehicle-mounted Streaming Media camera.
Background technology
Vehicle-mounted Streaming Media cam lens are one kind more special in all optical lens classifications, belong to wide-angle lens,
It is generally used for the shooting and projection of 70 ° to 80 ° even more large visual field environments.
In the prior art, the demand for on-vehicle lens market has developed many wide-angle lens, but this kind of wide-angle lens
While having enough field angles, distortion it is larger, and often temperature band come be affected, in high temperature or low temperature
When cannot keep ideal image quality, while on-vehicle lens are also more sensitive to strong light, automobile front, it may appear that apparent
Ghost image and veiling glare.
It gradually can not meet the market demands stepped up, the vehicle-mounted mirror of high definition using the on-vehicle lens of VGA schemes
Head is the development trend in future, and for existing on-vehicle lens mainly for VGA chips, pixel is low, and image quality is poor.Such as patent text
The ultra-wide angle high definition on-vehicle lens described in a kind of ultra-wide angle high definition on-vehicle lens (publication number 105137698A) are offered, optical distortion reaches
To -35%, Fno2.35, when low illumination, can not blur-free imaging.For example patent document wide-angle and low-distortion on-vehicle lens are (open again
Number 101561550A) described in wide-angle and low-distortion camera lens, optical distortion has been more than -40%, and distort still larger, image fault
Seriously.
Invention content
The purpose of this utility model is the presence of the above problem in view of the prior art, it is proposed that a kind of vehicle-mounted Streaming Media camera shooting
The technical issues of camera lens of head, the utility model solves is to reduce optical distortion.
The purpose of this utility model can be realized by following technical proposal：
A kind of camera lens of vehicle-mounted Streaming Media camera, which is characterized in that camera lens includes successively from object plane to image planes：Focal power
It is positive the second lens for the first negative lens, focal power, diaphragm, focal power are positive the third lens, focal power is negative the
Four lens, focal power are that positive the 5th lens and focal power are negative the 6th lens；First lens are that focal power is negative lordosis
Concave spherical surface lens afterwards, the second lens are preceding recessed rear convex aspheric surface spherical lens, and the third lens are biconvex spherical lens, the 4th lens
For preceding recessed rear protruding spherical lens, the third lens close microscope group, the light of the gluing microscope group with the 4th lens gluing unit rubber polymer
Focal power is that just, the 5th lens are non-spherical lens, and the 6th lens are preceding recessed rear convex aspheric surface lens.
It is front that above-mentioned front-rear direction, which is with object space, and image planes are rear；Light of the image planes configured with solid-state imager connects
Receipts face；In the camera lens of said combination, using the big field angle of camera lens of the first lenses guarantee with negative power, and to eliminating
Astigmatism and the curvature of field, control distortion play good effect；The second lens, the third lens and the 4th lens before and after diaphragm pass through
Mutual cooperation between lens further corrects various aberrations, ensures the high-res of camera lens；The third lens are glued with the 4th lens
The glued microscope group of formation has good rectification effect to spherical aberration, aberration, coma；5th lens, the 6th lens continuous use two
Piece aspherical lens also ensure that the on-vehicle lens have high resolution while reducing distortion.
In the camera lens of above-mentioned vehicle-mounted Streaming Media camera, first lens front surface is coated with waterproof membrane.It is avoided that
The attachment of droplet ensures the picture of rainy day shooting clear.
In the camera lens of above-mentioned vehicle-mounted Streaming Media camera, the refractive index Nd of first lens1, Nd1Meet following item
Part：1.8 ＞ Nd1＞ 1.75；The Abbe number of first lens is Vd1, Vd1Meet the following conditions：51 ＞ Vd1＞ 47；Before being with image
Side, a diameter of φ of the effective thang-kng of rear surface of first lens12, rear surface radius of curvature is R12, φ12And R12Relationship it is full
Sufficient the following conditions：The above-mentioned first lenses guarantee big field angle of camera lens, and to eliminate astigmatism and the curvature of field,
Control distortion plays good effect；It can inhibit strong light and automobile front simultaneously so that camera lens not will produce apparent ghost
Picture reduces the risk for generating veiling glare.
In the camera lens of above-mentioned vehicle-mounted Streaming Media camera, the focal length of second lens is f2, f2Meet following item
Part：42 ＞ f2＞ 32.
In the camera lens of above-mentioned vehicle-mounted Streaming Media camera, the refractive index Nd of the third lens3, Nd3Meet following item
Part：1.75 ＞ Nd3＞ 1.70；The Abbe number of the third lens is Vd3, Vd3Meet the following conditions：55 ＞ Vd3＞ 50, the third
The a diameter of φ of the effective thang-kng of rear surface of lens32, rear surface radius of curvature is R32, φ32And R32Relationship meet the following conditions：
In the camera lens of above-mentioned vehicle-mounted Streaming Media camera, the refractive index Nd of the 4th lens4, Nd4Meet following item
Part：1.95 ＞ Nd4＞ 1.90；The Abbe number of 4th lens is Vd4, Vd4Meet the following conditions：22 ＞ Vd4＞ 18, the described 4th
The a diameter of φ of the effective thang-kng of rear surface of lens42, rear surface radius of curvature is R42, φ42And R42Relationship meet the following conditions：
In the camera lens of above-mentioned vehicle-mounted Streaming Media camera, the refractive index Nd of the 5th lens5, Nd5Meet following item
Part：Nd5=1.53732；The Abbe number of 5th lens is Vd5, Vd5Meet the following conditions：Vd5=56.
In the camera lens of above-mentioned vehicle-mounted Streaming Media camera, the focal length of the 6th lens is f6, f6Meet following item
Part：- 7 ＞ f6＞ -15.
In the camera lens of above-mentioned vehicle-mounted Streaming Media camera, the optic back focal of camera lens is BFL, and the focal length of camera lens is EFL,
The distance of first lens object space side outermost point to imaging surface is TTL, and TTL meets the following conditions：19>TTL>17.9；BFL and EFL
Relationship meet the following conditions：BFL/EFL>0.9；The relationship of EFL and TTL meets the following conditions：TTL/EFL>4.5；H is picture
The relationship of height, H and TTL meet the following conditions：H/TTL>1/3.
In the camera lens of above-mentioned vehicle-mounted Streaming Media camera, the F-number of camera lens is FNO, and FNO meets the following conditions：2>
FNO>1.9。
In the camera lens of above-mentioned vehicle-mounted Streaming Media camera, the horizontal field of view angle of camera lens is HFOV, and HFOV meets following
Condition：HFOV>70.
In the camera lens of above-mentioned vehicle-mounted Streaming Media camera, first lens, the second lens, the third lens, the 4th
Aspherical formula is in lens, the 5th lens and the 6th lens：
When wherein Z is the position that the aspherical height along optical axis direction is h, away from aspherical fixed point apart from rise sag；C=1/R, R are
The radius of curvature of minute surface；K is circular cone coefficient conic；A, B, C, D are high order aspheric surface coefficient, and the e in coefficient represents science and technology
Number.
Compared with prior art, the camera lens of this vehicle-mounted Streaming Media camera can be less than meeting F-number less than 2 overall lengths
80 degree of big visual fields are realized under the premise of 18mm, -12% optical distortion, distortion is smaller, can export the 1.3M even high definition of 2M
Image quality；The reasonable material that must distribute surface curvature and aspherical lens, ensure that under strong light environment, the ghost image of the camera lens with
Veiling glare can obtain good inhibition, the more preferable advantage of shooting effect under strong light.
Description of the drawings
Fig. 1 is the structural schematic diagram of the camera lens of this vehicle-mounted Streaming Media camera.
Fig. 2 is each aberration diagram of camera lens in embodiment 1.
Fig. 3 is the coma figure of camera lens in embodiment 1.
Fig. 4 is the MTF figures of camera lens in embodiment 1.
Fig. 5 is the point range figure of camera lens in embodiment 1.
Fig. 6 is each aberration diagram of camera lens in embodiment 2.
Fig. 7 is the coma figure of camera lens in embodiment 2.
Fig. 8 is the MTF figures of camera lens in embodiment 2.
Fig. 9 is the point range figure of camera lens in embodiment 2.
In figure, the 1, first lens；2, the second lens；3, diaphragm；4, the third lens；5, the 4th lens；45, glued microscope group；
6, the 5th lens；7, the 6th lens；8, optical filter；9, protective glass；10, image planes.
Specific implementation mode
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
Embodiment one
As described in Figure 1, the camera lens of vehicle-mounted Streaming Media camera 10 includes successively from object plane to image planes：Focal power is negative the
One lens 1, focal power are positive the second lens 2, diaphragm 3, focal power are positive the third lens 4, focal power is the negative 4th thoroughly
Mirror 5, focal power are that positive the 5th lens 6 and focal power are negative the 6th lens 7；First lens 1 are that focal power is negative lordosis
Concave spherical surface lens afterwards, 1 front surface of the first lens are coated with waterproof membrane, and the second lens 2 are preceding recessed rear convex aspheric surface spherical lens, third
Lens 4 are biconvex spherical lens, and the 4th lens 5 are preceding recessed rear protruding spherical lens, and the third lens 4 and the 4th lens 5 are glued
It is combined into glued microscope group 45, the focal power of the gluing microscope group 45 is that just, the 5th lens 6 are non-spherical lens, and the 6th lens 7 are
Preceding recessed rear convex aspheric surface lens；It is front that above-mentioned front-rear direction, which is with object space, and image planes 10 are rear, the 6th lens 7 and image planes
Optical filter 8 and protective glass 9 are additionally provided between 10.
The optic back focal of camera lens is BFL, and the focal length of camera lens is EFL, 1 object space side outermost point of the first lens to imaging surface 10
Distance is TTL, and TTL meets the following conditions：19>TTL>17.9；The relationship of BFL and EFL meets the following conditions：BFL/EFL>0.9；
The relationship of EFL and TTL meets the following conditions：TTL/EFL>4.5；H is image height, and the relationship of H and TTL meet the following conditions：H/TTL
>1/3.The F-number of camera lens is FNO, and FNO meets the following conditions：2>FNO>1.9.The horizontal field of view angle of camera lens is HFOV, HFOV
Meet the following conditions：HFOV>70.
The refractive index Nd of first lens 11, Nd1Meet the following conditions：1.8 ＞ Nd1＞ 1.75；The Abbe number of first lens 1
For Vd1, Vd1Meet the following conditions：51 ＞ Vd1＞ 47；Using image as front, the effective thang-kng of rear surface of first lens 1 is straight
Diameter is φ12, rear surface radius of curvature is R12, φ12And R12Relationship meet the following conditions：Second lens 2
Focal length be f2, f2Meet the following conditions：42 ＞ f2＞ 32.The refractive index Nd of the third lens 43, Nd3Meet the following conditions：1.75
＞ Nd3＞ 1.70；The Abbe number of the third lens 4 is Vd3, Vd3Meet the following conditions：55 ＞ Vd3＞ 50, the third lens 4
The a diameter of φ of the effective thang-kng of rear surface32, rear surface radius of curvature is R32, φ32And R32Relationship meet the following conditions：The refractive index Nd of 4th lens 54, Nd4Meet the following conditions：1.95 ＞ Nd4＞ 1.90；4th lens 5
Abbe number be Vd4, Vd4Meet the following conditions：22 ＞ Vd4The effective thang-kng of rear surface of ＞ 18, the 4th lens 5 are a diameter of
φ42, rear surface radius of curvature is R42, φ42And R42Relationship meet the following conditions：5th lens 6
Refractive index Nd5, Nd5Meet the following conditions：Nd5=1.53732；The Abbe number of 5th lens 6 is Vd5, Vd5Meet the following conditions：
Vd5=56.The focal length of 6th lens 7 is f6, f6Meet the following conditions：- 7 ＞ f6＞ -15.
It is aspherical in first lens 1, the second lens 2, the third lens 4, the 4th lens 5, the 5th lens 6 and the 6th lens 7
Formula be：Wherein Z is aspherical along optical axis direction
When height is the position of h, away from aspherical fixed point apart from rise sag；C=1/R, R are the radius of curvature of minute surface；K is circular cone system
Number conic；A, B, C, D are high order aspheric surface coefficient, and the e in coefficient represents science and technology number.
In the present embodiment one, the first lens 1 meet：Nd1=1.7725, Vd1=49.6,Second lens 2
Meet：f2=40mm；The third lens 4 meet：Nd3=1.72916, Vd3=54.6,4th lens 5 meet：
Nd4=1.92286, Vd4=20.8,5th lens 6 meet：Nd5=1.53732, Vd5=56；6th lens 7
Meet：f6=-12mm.
Wherein optical system parameter such as following table：
| Surface number | Surface curvature radius | Thickness | Refractive Index of Material | Abbe number | Clear aperture |
| S1 | 5.381 | 0.70 | 1.7725 | 49.6 | 5.39 |
| S2 | 2.493 | 2.20 | 3.94 | ||
| *S3 | -3.299 | 1.65 | 1.64 | 23 | 3.16 |
| *S4 | -3.5 | 0.01 | 3.30 | ||
| Diaphragm 3 | Infinitely | 0.79 | 3.38 | ||
| S6 | 7.121 | 3.30 | 1.72916 | 54.6 | 3.80 |
| S7 | -3.698 | 0.55 | 1.92286 | 20.8 | 4.10 |
| S8 | -7.112 | 1.46 | 4.31 | ||
| *S9 | -12 | 2.46 | 1.5346 | 56 | 4.51 |
| *S10 | -2.302 | 0.36 | 5.20 | ||
| *S11 | -1.5 | 0.84 | 1.632 | 23 | 5.17 |
| *S12 | -2.272 | 1.39 | 5.64 | ||
| S13 | Infinitely | 0.30 | 1.5168 | 64.1 | 6.03 |
| S14 | Infinitely | 1.00 | 6.06 | ||
| S15 | Infinitely | 0.50 | 1.5168 | 64.1 | 6.23 |
| S16 | Infinitely | 0.40 | 6.28 | ||
| Image planes 10 | Infinitely | 0 | 6.35 |
The expression of surface number band " * " is aspherical in upper table, and spherical surface is expressed as without " * ".The specific position of surface number
It sets and sees attached drawing 1.
Related aspherical parameter such as following table：
The performance of camera lens is as shown in Figures 2 to 5 in above-described embodiment one, realize collection angle it is large and small distortion, miniaturization,
Permeability is good, can effectively inhibit the advantages of strong light and automobile front.
Embodiment two
In the present embodiment two, the first lens 1 meet：Nd1=1.7725, Vd1=49.6,Second lens 2
Meet：f2=35.4mm；The third lens 4 meet：Nd3=1.7725, Vd3=49.6,4th lens 5 meet：
Nd4=1.921189, Vd4=23.9,5th lens 6 meet：Nd5=1.53732, Vd5=56；6th lens
7 meet：f6=-8.43mm.
Wherein optical system parameter such as following table：
The expression of surface number band " * " is aspherical in upper table, and spherical surface is expressed as without " * ".The specific position of surface number
It sets and sees attached drawing 1.
Related aspherical parameter such as following table：
The performance of camera lens is as shown in Figures 6 to 9 in above-described embodiment one, realize collection angle it is large and small distortion, miniaturization,
Permeability is good, can effectively inhibit the advantages of strong light and automobile front.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (10)
1. a kind of camera lens of vehicle-mounted Streaming Media camera, which is characterized in that camera lens includes successively from object plane to image planes：Focal power is
Negative the first lens, focal power are positive the second lens, diaphragm, focal power are positive the third lens, focal power is the negative 4th
Lens, focal power are that positive the 5th lens and focal power are negative the 6th lens；First lens are after focal power is negative lordosis
Concave spherical surface lens, the second lens are preceding recessed rear convex aspheric surface spherical lens, and the third lens are biconvex spherical lens, and the 4th lens are
Preceding recessed rear protruding spherical lens, the third lens close microscope group, the light focus of the gluing microscope group with the 4th lens gluing unit rubber polymer
For degree for just, the 5th lens are non-spherical lens, the 6th lens are preceding recessed rear convex aspheric surface lens.
2. the camera lens of vehicle-mounted Streaming Media camera according to claim 1, which is characterized in that first lens front surface
It is coated with waterproof membrane.
3. the camera lens of vehicle-mounted Streaming Media camera according to claim 1 or 2, which is characterized in that first lens
Refractive index Nd1, Nd1Meet the following conditions：1.8 ＞ Nd1＞ 1.75；The Abbe number of first lens is Vd1, Vd1Meet the following conditions：
51 ＞ Vd1＞ 47；Using image as front, a diameter of φ of the effective thang-kng of rear surface of first lens12, rear surface radius of curvature
For R12, φ12And R12Relationship meet the following conditions：
4. the camera lens of vehicle-mounted Streaming Media camera according to claim 1 or 2, which is characterized in that second lens
Focal length is f2, f2Meet the following conditions：42 ＞ f2＞ 32.
5. the camera lens of vehicle-mounted Streaming Media camera according to claim 1 or 2, which is characterized in that the third lens
Refractive index Nd3, Nd3Meet the following conditions：1.75 ＞ Nd3＞ 1.70；The Abbe number of the third lens is Vd3, Vd3Meet following item
Part：55 ＞ Vd3＞ 50, a diameter of φ of the effective thang-kng of rear surface of the third lens32, rear surface radius of curvature is R32, φ32
And R32Relationship meet the following conditions：
6. the camera lens of vehicle-mounted Streaming Media camera according to claim 1 or 2, which is characterized in that the 4th lens
Refractive index Nd4, Nd4Meet the following conditions：1.95 ＞ Nd4＞ 1.90；The Abbe number of 4th lens is Vd4, Vd4Meet following item
Part：22 ＞ Vd4＞ 18, a diameter of φ of the effective thang-kng of rear surface of the 4th lens42, rear surface radius of curvature is R42, φ42
And R42Relationship meet the following conditions：
7. the camera lens of vehicle-mounted Streaming Media camera according to claim 1 or 2, which is characterized in that the 5th lens
Refractive index Nd5, Nd5Meet the following conditions：Nd5=1.53732；The Abbe number of 5th lens is Vd5, Vd5Meet the following conditions：
Vd5=56.
8. the camera lens of vehicle-mounted Streaming Media camera according to claim 1, which is characterized in that the focal length of the 6th lens
For f6, f6Meet the following conditions：- 7 ＞ f6＞ -15.
9. the camera lens of vehicle-mounted Streaming Media camera according to claim 1 or 2, which is characterized in that the optic back focal of camera lens
Focal length for BFL, camera lens is EFL, and the distance of the first lens object space side outermost point to imaging surface is TTL, and TTL meets following item
Part：19>TTL>17.9；The relationship of BFL and EFL meets the following conditions：BFL/EFL>0.9；The relationship of EFL and TTL meets following
Condition：TTL/EFL>4.5；H is image height, and the relationship of H and TTL meet the following conditions：H/TTL>1/3.
10. the camera lens of vehicle-mounted Streaming Media camera according to claim 9, which is characterized in that the F-number of camera lens is
FNO, FNO meet the following conditions：2>FNO>1.9；The horizontal field of view angle of camera lens is HFOV, and HFOV meets the following conditions：HFOV>
70。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820082134.6U CN207704119U (en) | 2018-01-18 | 2018-01-18 | A kind of camera lens of vehicle-mounted Streaming Media camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820082134.6U CN207704119U (en) | 2018-01-18 | 2018-01-18 | A kind of camera lens of vehicle-mounted Streaming Media camera |
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| Publication Number | Publication Date |
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| CN207704119U true CN207704119U (en) | 2018-08-07 |
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ID=63035343
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| CN201820082134.6U Expired - Fee Related CN207704119U (en) | 2018-01-18 | 2018-01-18 | A kind of camera lens of vehicle-mounted Streaming Media camera |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113031190A (en) * | 2021-03-10 | 2021-06-25 | 协益电子（苏州）有限公司 | Vehicle-mounted monitoring optical lens |
-
2018
- 2018-01-18 CN CN201820082134.6U patent/CN207704119U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113031190A (en) * | 2021-03-10 | 2021-06-25 | 协益电子（苏州）有限公司 | Vehicle-mounted monitoring optical lens |
| CN113031190B (en) * | 2021-03-10 | 2023-11-10 | 协益电子（苏州）有限公司 | Vehicle-mounted monitoring optical lens |
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