CN206532026U - Small low-cost 4MP is without thermalization tight shot - Google Patents
Small low-cost 4MP is without thermalization tight shot Download PDFInfo
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- CN206532026U CN206532026U CN201720092961.9U CN201720092961U CN206532026U CN 206532026 U CN206532026 U CN 206532026U CN 201720092961 U CN201720092961 U CN 201720092961U CN 206532026 U CN206532026 U CN 206532026U
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Abstract
The utility model belongs to field of optical device technology, more particularly to a kind of small low-cost 4MP is without thermalization tight shot, including the first lens being arranged in order from the object side to the image side, second lens, 3rd lens, 4th lens and the 5th lens, first lens are concave-concave negative power plastic aspheric lens, second lens are concavo-convex positive light coke plastic aspheric lens, 3rd lens are biconvex positive light coke glass spherical lens, 4th lens are concave-concave negative power plastic aspheric lens, 5th lens are biconvex positive light coke plastic aspheric lens.Relative to prior art, the utility model adds the optical texture that the glass modeling of 4 plastic aspherical element eyeglasses is combined using 1 glass spheric glass, give full play to the advantage that glass lens are easy to process, glass lens cost is low, collocation 4MP, 1/2.7 inch of chip, visible ray can be made with reaching 4MP resolution ratio under infrared light, cost had both been reduced and in turn ensure that performance.
Description
Technical field
The utility model belongs to field of optical device technology, more particularly to a kind of small low-cost 4MP focuses mirror without thermalization
Head.
Background technology
With the development of data transfer and storing technology, in monitoring field, the monitoring for possessing high definition or full HD pixel is taken the photograph
As head gradually occuping market, high-definition camera chip has 1280*720 pixel i.e. 720p, and full HD camera chip has 1920*
1080 pixel is 1080p, also in the presence of some 4MP pixel requests；Meanwhile, the size of chip differs, and main flow size is 1/3
Inch or 1/2.7 inch.The specification of chip determines the design requirement of camera lens, and 4MP, 1/2.7 inch of chip can be realized enough
More preferably as matter, but at present such camera lens also exist as matter it is bad the problem of, resolution ratio has much room for improvement, and carries high-resolution side
Method includes increase number of lenses, or reduces clear aperature using less eyeglass, but can cause increase or the thang-kng of cost
The deficiency of amount, therefore there is the problem of performance is difficult to balance with cost.
In view of this, it is necessory to provide a kind of small low-cost 4MP without thermalization tight shot, it uses 1G+4P (a piece of
+ 4 glass lens of glass lens) glass modeling combine optical texture, collocation 4MP, 1/2.7 inch of chip, can make visible ray with
4MP resolution ratio is reached under infrared light, cost had both been reduced and in turn ensure that performance.
Utility model content
The purpose of this utility model is：In view of the shortcomings of the prior art, a kind of small low-cost 4MP is provided without thermalization
Tight shot, it uses the optical texture that the modeling of 1G+4P (a piece of+4 glass lens of glass lens) glass is combined, collocation 4MP, 1/
2.7 inches of chip, can make visible ray with reaching 4MP resolution ratio under infrared light, both reduce cost and in turn ensure that performance.
In order to achieve the above object, the utility model is adopted the following technical scheme that：
Small low-cost 4MP is without thermalization tight shot, including the first lens, second saturating being arranged in order from the object side to the image side
Mirror, the 3rd lens, the 4th lens and the 5th lens, first lens are concave-concave negative power plastic aspheric lens, described
Second lens are concavo-convex positive light coke plastic aspheric lens, and the 3rd lens are biconvex positive light coke glass spherical lens,
4th lens are concave-concave negative power plastic aspheric lens, and the 5th lens are biconvex positive light coke plastic aspherical element
Lens；
The ratio of the focal length of 3rd lens and the 5th lens and the focal length of whole camera lens meets following article
Part：
1.94 ＜ | f3/f | ＜ 2.35；
0.97 ＜ | f5/f | ＜ 1.53；
Wherein, f is the focal length of whole camera lens；F3 is the focal length of the 3rd lens；F5 is the focal length of the 5th lens.
It is used as a kind of improvement of the utility model small low-cost 4MP without thermalization tight shot, first lens to institute
Focal length, refractive index and the radius of curvature for stating the 5th lens meet following condition：
In upper table, " f " is focal length, and " n " is refractive index, and " R " is radius of curvature, and "-" number represents that direction is negative；
Wherein, f1 to f5 corresponds respectively to first lens to the focal length of the 5th lens；N1 to n5 is corresponded to respectively
In the refractive index of first lens to the 5th lens；R1, R3, R5, R7 and R9 correspond respectively to first lens extremely
The radius of curvature of the one side of the close object space of 5th lens, R2, R4, R6, R8 and R10 correspond respectively to first lens
To the radius of curvature of the one side of the remote object space of the 5th lens.
Improved as a kind of without thermalization tight shot of the utility model small low-cost 4MP, it is first lens, described
Second lens, the 4th lens and the 5th lens meet equation below：
Wherein：Z is the non-spherical lens along optical axis direction at the position that height is y, away from the non-spherical lens top
Point apart from rise, c=1/R, R represents the radius of curvature at the non-spherical lens Mian Xing centers, and k represents circular cone coefficient, parameter
A, B, C, D, E, F are high order aspheric surface coefficient.
As a kind of improvement of the utility model small low-cost 4MP without thermalization tight shot, first lens and institute
The second lens are stated by soma close-fittings, soma is anti-dazzling screen.
As a kind of improvement of the utility model small low-cost 4MP without thermalization tight shot, second lens and institute
State the 3rd lens and pass through spacer ring close-fitting.
As a kind of improvement of the utility model small low-cost 4MP without thermalization tight shot, the 3rd lens and institute
State the 4th lens and pass through spacer ring close-fitting.
As a kind of improvement of the utility model small low-cost 4MP without thermalization tight shot, the 4th lens and institute
State the 5th lens and pass through soma close-fittings.
Relative to prior art, the utility model has the following advantages：
First, the first lens of the present utility model, the second lens, the 4th lens and the 5th lens employ glass lens,
Accomplish low cost and high-performance, the cost of glass lens is far below glass spheric glass, so reduce cost；Again due to this
The first lens, the second lens, the 4th lens and the 5th lens of utility model employ aspherical lens, compared to traditional ball
Face eyeglass improves performance.
Second, the utility model adds the optics that the glass modeling of 4 plastic aspherical element eyeglasses is combined using 1 glass spheric glass
Structure, gives full play to the advantage that glass lens are easy to process, glass lens cost is low, collocation 4MP, 1/2.7 inch of chip, energy
Make visible ray with reaching 4MP resolution ratio under infrared light, both reduced cost and in turn ensure that performance.
3rd, visible ray of the present utility model can reach million grades of pixels, pass through reasonable employment glass and optical plastic group
Close, image quality is good, and cause visual light imaging clearly in the case of without focusing can to infrared light also blur-free imaging,
And cause infrared imaging also to reach mega pixel, clearly bright monitoring picture can be also realized under night low-light (level)
Face, realizes day and night confocal function.It is provided simultaneously with temperature compensation function and passive without thermalization function, can reaches at -30~+80 DEG C
Used under environment and do not run Jiao.
Brief description of the drawings
Fig. 1 is optical texture schematic diagram of the present utility model.
Fig. 2 is assembling assumption diagram of the present utility model.
Embodiment
The utility model and its advantage are described in further detail below with reference to specific embodiment, still,
Embodiment of the present utility model is not limited thereto.
As depicted in figs. 1 and 2, the utility model provide a kind of small low-cost 4MP without thermalization tight shot, including from
The first lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4 and the 5th lens 5 that object space is arranged in order to image space, first is saturating
Mirror 1 is concave-concave negative power plastic aspheric lens, and the second lens 2 are concavo-convex positive light coke plastic aspheric lens, and the 3rd is saturating
Mirror 3 is biconvex positive light coke glass spherical lens, and the 4th lens 4 are concave-concave negative power plastic aspheric lens, the 5th lens 5
For biconvex positive light coke plastic aspheric lens；
The ratio of the focal length of 3rd lens 3 and the 5th lens 5 and the focal length of whole camera lens meets following condition：
1.94 ＜ | f3/f | ＜ 2.35；
0.97 ＜ | f5/f | ＜ 1.53；
Wherein, f is the focal length of whole camera lens；F3 is the focal length of the 3rd lens 3；F5 is the focal length of the 5th lens 5, to reach
Miniaturization, high performance purpose.
Focal length, refractive index and the radius of curvature of the lens 5 of first lens 1 to the 5th meet following condition：
In upper table, " f " is focal length, and " n " is refractive index, and " R " is radius of curvature, and "-" number represents that direction is negative；
Wherein, f1 to f5 corresponds respectively to the focal length of the lens 5 of the first lens 1 to the 5th；N1 to n5 corresponds respectively to first
The refractive index of the lens 5 of lens 1 to the 5th；R1, R3, R5, R7 and R9 correspond respectively to the close of the lens 5 of the first lens 1 to the 5th
The radius of curvature of the one side of object space, R2, R4, R6, R8 and R10 correspond respectively to the remote object space of the lens 5 of the first lens 1 to the 5th
One side radius of curvature.
First lens 1, the second lens 2, the 4th lens 4 and the 5th lens 5 meet equation below：
Wherein：Z is non-spherical lens along optical axis direction at the position that height is y, the distance away from non-spherical lens summit
Rise, c=1/R, R represents the radius of curvature at non-spherical lens Mian Xing centers, and k represents circular cone coefficient, and parameter A, B, C, D, E, F are
High order aspheric surface coefficient.
First lens 1 and the second lens 2 pass through soma close-fittings.
Second lens 2 and the 3rd lens 3 pass through spacer ring close-fitting.
3rd lens 3 and the 4th lens 4 pass through spacer ring close-fitting.
4th lens 4 and the 5th lens 5 pass through soma close-fittings.
Embodiment 1
As illustrated in fig. 1 and 2, a kind of small low-cost 4MP is present embodiments provided without thermalization tight shot, including from object space
The first lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4 and the 5th lens 5 being arranged in order to image space, the first lens 1
For concave-concave negative power plastic aspheric lens, the second lens 2 are concavo-convex positive light coke plastic aspheric lens, the 3rd lens 3
For biconvex positive light coke glass spherical lens, the 4th lens 4 are concave-concave negative power plastic aspheric lens, and the 5th lens 5 are
Biconvex positive light coke plastic aspheric lens；First lens 1 and the second lens 2 pass through soma close-fittings.Second lens 2 and the 3rd saturating
Mirror 3 passes through spacer ring close-fitting.3rd lens 3 and the 4th lens 4 pass through spacer ring close-fitting.4th lens 4 and the 5th lens 5 pass through soma
Close-fitting.
In the present embodiment, face type, radius of curvature R, lens thickness, eyeglass spacing, lens index nd and the K value of each lens
Following condition (table 1) is met respectively：
In table 1, " R " is radius of curvature, and "-" number represents that direction is negative, and " PL " represents plane, and upper table the same face sequence number is existing
Refractive index data nd, has data D, data D to represent the thickness at the lens axial line again, the same face sequence number there was only data D and
There is no refractive index data nd, data D to represent the lens to the spacing of next lens face.It is saturating that face sequence number 1 and 2 corresponds to first respectively
The face towards the face of object space and towards image space of mirror 1；Face sequence number 3 and 4 correspond to respectively the second lens 2 towards the face of object space and court
To the face of image space；Face sequence number 5 and 6 corresponds to the face towards the face of object space and towards image space of the 3rd lens 3 respectively；Face sequence number 7 and 8
The face towards the face of object space and towards image space of the 4th lens 4 is corresponded to respectively；Face sequence number 9 and 10 corresponds to the 5th lens 5 respectively
Face towards the face of object space and towards image space.
The face of face serial number 1,2,3,4,7,8,9 and 10 is aspherical in table 1, and aspherical lens meet equation below：
Wherein：Z is non-spherical lens along optical axis direction at the position that height is y, the distance away from non-spherical lens summit
Rise, c=1/R, R represents the radius of curvature at non-spherical lens Mian Xing centers, and k represents circular cone coefficient, and parameter A, B, C, D, E, F are
High order aspheric surface coefficient.
Aspherical face shape parameter is shown in Table 2 in the present embodiment：
Table 2：The aspherical parameter on the surface of the 1st, 2,3,4,7,8,9 and 10.
In a word, the utility model has the following advantages：
First, the first lens 1 of the present utility model, the second lens 2, the 4th lens 4 and the 5th lens 5 employ plastic lens
Piece, has accomplished low cost and high-performance, the cost of glass lens is far below glass spheric glass, so reduce cost；And by
Aspherical lens are employed in the first lens 1 of the present utility model, the second lens 2, the 4th lens 4 and the 5th lens 5, are compared
Traditional spheric glass improves performance.
Second, the utility model adds the optics that the glass modeling of 4 plastic aspherical element eyeglasses is combined using 1 glass spheric glass
Structure, gives full play to the advantage that glass lens are easy to process, glass lens cost is low, collocation 4MP, 1/2.7 inch of chip, energy
Make visible ray with reaching 4MP resolution ratio under infrared light, both reduced cost and in turn ensure that performance.
3rd, visible ray of the present utility model can reach million grades of pixels, pass through reasonable employment glass and optical plastic group
Close, image quality is good, and cause visual light imaging clearly in the case of without focusing can to infrared light also blur-free imaging,
And cause infrared imaging also to reach mega pixel, clearly bright monitoring picture can be also realized under night low-light (level)
Face, realizes day and night confocal function.It is provided simultaneously with temperature compensation function and passive without thermalization function, can reaches at -30~+80 DEG C
Used under environment and do not run Jiao.
The announcement and teaching of book according to the above description, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying carries out appropriate change and modification.Therefore, the utility model is not limited to specific implementation disclosed and described above
Some modifications and changes of the present utility model should also be as falling into scope of the claims of the present utility model by mode.
Although in addition, used some specific terms in this specification, these terms merely for convenience of description, not to this reality
With any limitation of new composition.
Claims (7)
1. small low-cost 4MP is without thermalization tight shot, it is characterised in that：First including being arranged in order from the object side to the image side is saturating
Mirror, the second lens, the 3rd lens, the 4th lens and the 5th lens, first lens are concave-concave negative power plastic aspherical element
Lens, second lens are concavo-convex positive light coke plastic aspheric lens, and the 3rd lens are biconvex positive light coke glass
Spherical lens, the 4th lens are concave-concave negative power plastic aspheric lens, and the 5th lens are biconvex positive light coke
Plastic aspheric lens；
The ratio of the focal length of 3rd lens and the 5th lens and the focal length of whole camera lens meets following condition：
1.94 ＜ | f3/f | ＜ 2.35；
0.97 ＜ | f5/f | ＜ 1.53；
Wherein, f is the focal length of whole camera lens；F3 is the focal length of the 3rd lens；F5 is the focal length of the 5th lens.
2. small low-cost 4MP according to claim 1 is without thermalization tight shot, it is characterised in that：First lens
Focal length, refractive index and radius of curvature to the 5th lens meet following condition：
In upper table, " f " is focal length, and " n " is refractive index, and " R " is radius of curvature, and "-" number represents that direction is negative；
Wherein, f1 to f5 corresponds respectively to first lens to the focal length of the 5th lens；N1 to n5 corresponds respectively to institute
The first lens are stated to the refractive index of the 5th lens；R1, R3, R5, R7 and R9 correspond respectively to first lens to described
The radius of curvature of the one side of the close object space of 5th lens, R2, R4, R6, R8 and R10 correspond respectively to first lens to institute
State the radius of curvature of the one side of the remote object space of the 5th lens.
3. small low-cost 4MP according to claim 1 is without thermalization tight shot, it is characterised in that：First lens,
Second lens, the 4th lens and the 5th lens meet equation below：
Wherein：Z is the non-spherical lens along optical axis direction at the position that height is y, away from the non-spherical lens summit
Apart from rise, c=1/R, R represents the radius of curvature at the non-spherical lens Mian Xing centers, and k represents circular cone coefficient, parameter A, B,
C, D, E, F are high order aspheric surface coefficient.
4. small low-cost 4MP according to claim 1 is without thermalization tight shot, it is characterised in that：First lens
Pass through anti-dazzling screen close-fitting with second lens.
5. small low-cost 4MP according to claim 1 is without thermalization tight shot, it is characterised in that：Second lens
Pass through spacer ring close-fitting with the 3rd lens.
6. small low-cost 4MP according to claim 1 is without thermalization tight shot, it is characterised in that：3rd lens
Pass through spacer ring close-fitting with the 4th lens.
7. small low-cost 4MP according to claim 1 is without thermalization tight shot, it is characterised in that：4th lens
Pass through anti-dazzling screen close-fitting with the 5th lens.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720092961.9U CN206532026U (en) | 2017-01-22 | 2017-01-22 | Small low-cost 4MP is without thermalization tight shot |
| TW107201023U TWM565800U (en) | 2017-01-22 | 2018-01-22 | Small-size low-cost 4MP athermalized prime lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720092961.9U CN206532026U (en) | 2017-01-22 | 2017-01-22 | Small low-cost 4MP is without thermalization tight shot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206532026U true CN206532026U (en) | 2017-09-29 |
Family
ID=59921100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720092961.9U Active CN206532026U (en) | 2017-01-22 | 2017-01-22 | Small low-cost 4MP is without thermalization tight shot |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN206532026U (en) |
| TW (1) | TWM565800U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597641A (en) * | 2017-01-22 | 2017-04-26 | 东莞市宇瞳光学科技股份有限公司 | Small-size low-cost 4MP athermalized prime lens |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174746B (en) | 2019-03-08 | 2024-06-04 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
| CN113514937B (en) * | 2021-05-27 | 2023-11-07 | 江西晶超光学有限公司 | Optical system, camera module and electronic equipment |
-
2017
- 2017-01-22 CN CN201720092961.9U patent/CN206532026U/en active Active
-
2018
- 2018-01-22 TW TW107201023U patent/TWM565800U/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597641A (en) * | 2017-01-22 | 2017-04-26 | 东莞市宇瞳光学科技股份有限公司 | Small-size low-cost 4MP athermalized prime lens |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM565800U (en) | 2018-08-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Pinguang Inventor after: Liu Zhenquan Inventor after: He Jianwei Inventor before: Liu Zhenquan |
|
| CB03 | Change of inventor or designer information |