CN206348500U - A kind of high definition moves DV phtographic lenses - Google Patents
A kind of high definition moves DV phtographic lenses Download PDFInfo
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- CN206348500U CN206348500U CN201621351882.7U CN201621351882U CN206348500U CN 206348500 U CN206348500 U CN 206348500U CN 201621351882 U CN201621351882 U CN 201621351882U CN 206348500 U CN206348500 U CN 206348500U
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- lens element
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- high definition
- focal power
- phtographic lenses
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Abstract
The utility model is related to a kind of high definition motion DV phtographic lenses, including shell, the first lens element, the second lens element, the 3rd lens element, the 4th lens element, the 5th lens element, the 6th lens element, the 7th lens element and optical filter are arranged in sequence with by thing side to image side in shell；Aperture is provided between second lens element and the 3rd lens element；First lens element, the second lens element, the 3rd lens element, the 4th lens element, the 5th lens element, the focal distance ratio of the 6th lens element and the 7th lens element are：‑1：‑2：‑3:‑1/3：+4：‑1/4：‑7/5.Focal length of the present utility model accounts for 1/3 or so of optics overall length, and control the focal length proportionate relationship of the lens element of the first lens element~the 7th, so as under lenticular element arrangement restriction, the distortion rate of camera lens can strictly be controlled, so that TV distortion is greatly lowered during lens shooting, it can control in 1%, shooting effect is more preferably apparent.
Description
Technical field
The utility model is related to optical lens, belongs to optical lens technical field, more specifically, the utility model is related to one
Plant high definition motion DV phtographic lenses.
Background technology
With the development of camera lens and electronic technology, camera lens is no longer merely confined in camera system.Except traditional
DV is shot, and camera lens also begins to be used under other various video acquisition environment.Shooting of such as monitoring system to surrounding environment, respectively
Planting vehicle fitting includes car, lorry, motorcycle in automobile etc., in order to ensure safety of the driver when carrying out reverse action
Property, it is to avoid collide and cause damage with car, people or other objects, therefore installed in vehicle rear and be served only for camera originally
Wide-angle lens, the picture of external object is absorbed by the camera lens, allows the driver's viewing for being sitting in driver's cabin to be sentenced by line transmission
It is disconnected, it is ensured that the safety between vehicle and other objects.But the wide-angle lens of current in-vehicle camera is general to use 6 or 6
More than glass lens composition, this wide-angle lens not only heavier-weight, cost is higher, and after the angle of visual field is more than 90 °, distortion
Will be very serious, therefore, the wide-angle lens of many optics enterprise developments uses aspheric surface technology, with mitigate weight, cost and
Reducing distortion amount, but the thang-kng performance of the camera lens is weaker, and in particular with the reduction of number of lenses, lens length is shorter, no
It is suitable for the DV systems for typically having particular requirement to lens length.
Utility model content
Based on above technical problem, the utility model provides a kind of high definition and moves DV phtographic lenses, thus solve with
Toward the technical problem that DV phtographic lenses distortion rate is high, TV distortion is serious.
To solve above technical problem, the technical solution adopted in the utility model is as follows：
A kind of high definition is moved in DV phtographic lenses, including shell, shell and is arranged in sequence with the first lens by thing side to image side
It is element, the second lens element, the 3rd lens element, the 4th lens element, the 5th lens element, the 6th lens element, the 7th saturating
Mirror element and optical filter；
Wherein,
First lens element is with negative focal power and is convex to the curved month type eyeglass of thing side；
Second lens element is with negative focal power biconvex eyeglass；
3rd lens element is the biconvex eyeglass with negative focal power；
4th lens element is with negative focal power double concave type eyeglass；
5th lens element is with positive focal power and concaves towards the curved month type eyeglass of image side；
6th lens element is with negative focal power biconvex eyeglass；
7th lens element is with negative focal power and concaves towards the curved month type eyeglass of thing side；
Aperture is provided between second lens element and the 3rd lens element；
First lens element, the second lens element, the 3rd lens element, the 4th lens element, the 5th lens element,
The focal distance ratio of 6th lens element and the 7th lens element is：-1：-2：-3:-1/3：+4：-1/4：-7/5.
It is preferred that, first lens element meets formula：Nd >=1.825503, Vd >=42.78；
Wherein.
Nd represents the d optical indexs of the first lens element material；
Vd represents the d light Abbe constants of the first lens element material.
It is preferred that, second lens element meets formula：Nd >=1.5559, Vd >=47.58；
Wherein,
Nd represents the d optical indexs of the second lens element material；
Vd represents the d light Abbe constants of the second lens element material.
It is preferred that, the first lens element thing side outermost point is to imaging surface apart from TTL >=21mm；The high definition motion
The focal length of DV phtographic lenses is apart from the 1/3 of TTL.It is the camera lens overall length that high definition moves DV phtographic lenses apart from TTL.
It is preferred that, it is first lens element, the second lens element, the 3rd lens element, the 4th lens element, the 5th saturating
Mirror element, the 6th lens element and the 7th lens element are glass lens element.
Compared with prior art, effective effect of the present utility model is：Focal length of the present utility model accounts for the 1/3 of optics overall length
Left and right, and control the focal length proportionate relationship of the lens element of the first lens element~the 7th, so that under lenticular element arrangement restriction,
The distortion rate of camera lens can strictly be controlled so that TV distortion is greatly lowered during lens shooting, can be controlled in 1%, shoots effect
Fruit is more preferably apparent.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；High order end is thing side in figure, and low order end is image side；
Fig. 2 is index path of the present utility model；
Fig. 3 is chromatic curve figure；
Fig. 4 is astigmatism curve map；
Fig. 5 is distortion curve figure；
Label in figure is expressed as：L1, the first lens element；L2, the second lens element；L3, the 3rd lens element；
L4, the 4th lens element；L5, the 5th lens element；L6, the 6th lens element；L7, the 7th lens element；IR, optical filter；
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.Embodiment of the present utility model includes but not limited
In the following example.
As shown in Figure 1 and Figure 2, the whole focal length value of high definition motion DV phtographic lenses is F=8.25mm, and f-number is F/NO
=3.0, the angle of visual field is 2 ω=52 °, and camera lens overall length TTL is 21.35mm；By object space side, by each minute surface number consecutively,
First lens element L1 curvature mirror radius is R1, R2, and the second lens element L2 curvature mirror radius is R3, R4, diaphragm
Face is R5, and the 3rd lens element L3 curvature mirror radius is R6, R7, the 4th lens element L4 curvature mirror radius is R8,
R9, the 5th lens element L5 curvature mirror radius are R10, R11, the 6th lens element L6 curvature mirror radius is R12,
R13, the 7th lens element L7 curvature mirror radius are R14, and colour filter IR minute surface is R15, R16, wherein, described first is saturating
Mirror element L1 focal length value F1=-0.338341mm；The focal length value F2=-0.619534mm of the second lens element L2；Institute
State the 3rd lens element L3 burnt F3=-0.907789mm；The focal length value F4=- of the 4th lens element L4
0.121687mm；The focal length value F5=+1.127073mm of the 5th lens element L5；The focal length of the 6th lens element L6
Value F6=-0.081220mm, the focal length value F7=-0.42850mm of the 7th lens element L7, focal distance ratio is about：-1∶-2∶-
3∶-1/3∶+4∶-1/4∶-7/5。
As shown in Table 1, it is the optical parametric of high definition motion DV phtographic lenses；
| Face sequence number | Radius of curvature | Center thickness | Nd | Vd |
| Object plane | It is infinitely great | It is infinitely great | ||
| First lens element object plane | It is infinitely great | 0.6 | 1.825503 | 42.78 |
| First lens element image planes | 4.9 | 2.135157 | ||
| Second lens element object plane | 11.59 | 1.87 | 1.5559 | 47.58 |
| Second lens element image planes | -14.77 | 1.36582 | ||
| Diaphragm | 0 | 2 | ||
| 3rd lens element object plane | 6.29 | 2.45 | 2.105 | 21.92 |
| 3rd lens element image planes | -9.58 | 0.409908 | ||
| 4th lens element object plane | -7.29 | 0.5 | 1.6952 | 45 |
| 4th lens element image planes | 4.87 | 0.811489 | ||
| 5th lens element object plane | -12 | 1.92 | 1.57 | 59.95 |
| 5th lens element image planes | -6.7 | 0.1 | ||
| 6th lens element object plane | 52.44 | 2 | 1.951466 | 24.19 |
| Six, the seven lens elements | -3.64 | 0.5 | 1.951 | 26.12 |
| 7th lens element image planes | -9.82 | 0.2 | ||
| Colour filter lens element object plane | 0 | 0.3 | 1.5048 | 66.42 |
| Colour filter lens element image planes | 0 | 5.5 |
Table one
Wherein curvature mirror radial unit is mm, and the unit of center thickness is mm.
As can be seen from Table I, the first lens element L1 object planes are infinitely great, as the curved surface of infinite approach plane；While the
Two lens element L2, the 3rd lens element L3 use biconvex eyeglass, and the 4th lens element L4 uses double concave type eyeglass, San Zhequ
Rate radius absolute value is all closer to, and the 5th lens element L5 R10, R11 are about 2: 1, and passes through larger curvature mirror half
The 6th lens element L6 in footpath and the 7th lens element L7 is imaged after focusing on, so as to can effectively correct optical system in imaging
In aberration, and the first lens element L1 meets d optical index Nd >=1.825503, d light Abbe constants Vd >=42.78, the second
Lens element L2 meets d optical index Nd >=1.5559, d light Abbe constants Vd >=47.58, so as to reduce the distortion factor, into
As quality is high.
The optical performance curve figure of high definition large aperture driving recording phtographic lens can be obtained with above-mentioned data.Such as Fig. 3~
Shown in Fig. 5, wherein, Fig. 3 is chromatic curve figure (being also spherical aberration curve map), by conventional F, d, and the wavelength of C three coloured lights is represented,
Unit is mm；Fig. 4 is astigmatism curve map, by conventional F, and the wavelength of d.C three coloured lights represents that unit is nm；Fig. 5 is distortion
Curve map, represents the distortion sizes values in the case of the different angles of visual field, unit is %.
It can be drawn from Fig. 1~Fig. 5, the optics overall length TTL of high definition motion DV phtographic lenses is 21.35mm, and external diameter is
12.00mm, it is aesthetic in appearance, shell can use metallic material shell, pixel more than 16,000,000, diagonal 52 degree, TV distortion only-
0.9%；Camera lens cost performance is high, and is that can reach aperture F/NO using this structure:3.0 requirement.
It is embodiment of the present utility model as described above.Design parameter in above-described embodiment and embodiment be only for
The utility model verification process of clear statement utility model people, and be not used to limit scope of patent protection of the present utility model,
Scope of patent protection of the present utility model is still defined by its claims, every with specification of the present utility model and attached
The equivalent structure change that figure content is made, similarly should be included in protection domain of the present utility model.
Claims (5)
1. a kind of high definition moves DV phtographic lenses, including shell, it is characterised in that：It is arranged in sequence with shell by thing side to image side
First lens element (L1), the second lens element (L2), the 3rd lens element (L3), the 4th lens element (L4), the 5th lens
Element (L5), the 6th lens element (L6), the 7th lens element (L7) and optical filter (IR)；
Wherein,
First lens element (L1) is with negative focal power and is convex to the curved month type eyeglass of thing side；
Second lens element (L2) is with negative focal power biconvex eyeglass；
3rd lens element (L3) is the biconvex eyeglass with negative focal power；
4th lens element (L4) is with negative focal power double concave type eyeglass；
5th lens element (L5) is with positive focal power and concaves towards the curved month type eyeglass of image side；
6th lens element (L6) is with negative focal power biconvex eyeglass；
7th lens element (L7) is with negative focal power and concaves towards the curved month type eyeglass of thing side；
Aperture is provided between second lens element (L2) and the 3rd lens element (L3)；
First lens element (L1), the second lens element (L2), the 3rd lens element (L3), the 4th lens element (L4),
The focal distance ratio of 5th lens element (L5), the 6th lens element (L6) and the 7th lens element (L7) is：-1：-2：-3:-1/3：+
4：-1/4：-7/5.
2. a kind of high definition motion DV phtographic lenses according to claim 1, it is characterised in that：First lens element
(L1) formula is met：Nd >=1.825503, Vd >=42.78；
Wherein,
Nd represents the d optical indexs of the first lens element (L1) material；
Vd represents the d light Abbe constants of the first lens element (L1) material.
3. a kind of high definition motion DV phtographic lenses according to claim 1, it is characterised in that：Second lens element
(L2) formula is met：Nd >=1.5559, Vd >=47.58；
Wherein,
Nd represents the d optical indexs of the second lens element (L2) material；
Vd represents the d light Abbe constants of the second lens element (L2) material.
4. a kind of high definition motion DV phtographic lenses according to claim 1, it is characterised in that：First lens element
(L1) thing side outermost point to imaging surface apart from TTL >=21mm；The focal length of the high definition motion DV phtographic lenses is apart from TTL's
1/3。
5. a kind of high definition motion DV phtographic lenses according to claim 1, it is characterised in that：First lens element
(L1), the second lens element (L2), the 3rd lens element (L3), the 4th lens element (L4), the 5th lens element (L5), the 6th
Lens element (L6) and the 7th lens element (L7) are glass lens element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621351882.7U CN206348500U (en) | 2016-12-10 | 2016-12-10 | A kind of high definition moves DV phtographic lenses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621351882.7U CN206348500U (en) | 2016-12-10 | 2016-12-10 | A kind of high definition moves DV phtographic lenses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206348500U true CN206348500U (en) | 2017-07-21 |
Family
ID=59318458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621351882.7U Expired - Fee Related CN206348500U (en) | 2016-12-10 | 2016-12-10 | A kind of high definition moves DV phtographic lenses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206348500U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110716291A (en) * | 2018-07-12 | 2020-01-21 | 三星电机株式会社 | Optical imaging system |
-
2016
- 2016-12-10 CN CN201621351882.7U patent/CN206348500U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110716291A (en) * | 2018-07-12 | 2020-01-21 | 三星电机株式会社 | Optical imaging system |
| US11269160B2 (en) | 2018-07-12 | 2022-03-08 | Samsung Electro-Mechanics Co., Ltd. | Optical imaging system including seven lenses of +--- +-+ or +--++-+ refractive powers |
| US11927828B2 (en) | 2018-07-12 | 2024-03-12 | Samsung Electro-Mechanics Co., Ltd. | Optical imaging system including seven lenses of +−−−+−+or +−−++−+refractive powers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170721 Termination date: 20201210 |