CN208172358U - A kind of high pixel micromirrors head - Google Patents
A kind of high pixel micromirrors head Download PDFInfo
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- CN208172358U CN208172358U CN201820716599.2U CN201820716599U CN208172358U CN 208172358 U CN208172358 U CN 208172358U CN 201820716599 U CN201820716599 U CN 201820716599U CN 208172358 U CN208172358 U CN 208172358U
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- high pixel
- micromirrors
- pixel micromirrors
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Abstract
The utility model relates to a kind of high pixel micromirrors head, the high pixel micromirrors head from object side, successively by：The first lens with positive refracting power have negative refractive power, and object side is second lens on convex surface, with negative refractive power, and image planes side is the third lens on convex surface, has positive refracting power, and object side is the 4th lens on convex surface and has negative refractive power, and image planes side is the 5th lens composition of concave surface.In the utility model, using 5 aspherical glass lens, optics overall length may be implemented less than 3.9mm, f-number is the bright camera lens of F2.0, has good performance for imaging also under darker environment, maximum as circle isWhen 1/3 " Sensor Pixel Dimensions of matching are 0.9um, pixel is less than up to the 16,000,000, and first lens, the second lens clear apertureStructure be applicable to shield smart phone comprehensively.
Description
Technical field
The utility model relates to shield the smart phone of high pixel or thin video photographic device technical field comprehensively, especially
A kind of high pixel micromirrors head.
Background technique
With the development of image sensor chip technology, single pixel size is done smaller and smaller, and this requires take therewith
The pick-up lens parsing power matched is also higher and higher.Smart phone with camera function, recently as the market demand also new hair
Exhibition trend, in addition to high pixel, large aperture, except extra-thin requirement, comprehensive screen of smart phone also lifts on the market recently
Play upsurge.This requires pick-up lens other than meeting described above require, and the size of object side is small as far as possible, with
Meet the requirement of screen structure design aspect comprehensively.
Utility model content
The purpose of this utility model is to provide for a kind of high pixel micromirrors head.
The technical solution of the utility model is：A kind of high pixel micromirrors head, the high pixel micromirrors head from object side, according to
It is secondary by：The first lens with positive refracting power have negative refractive power, and object side is second lens on convex surface, has negative refraction
Power, and image planes side is the third lens on convex surface, has positive refracting power, and object side is for the 4th lens on convex surface and with negative refraction
Power, and image planes side is the 5th lens composition of concave surface, and meets conditional below：
0.5<F1/F<1.2
0.5<R5/R6<2.0
Wherein, F1 is first focal length of lens, and F is system focal length, and R5 is the radius of curvature of the third lens side of the object, and R6 is
The radius of curvature of the third lens image planes side.
A kind of above-mentioned high pixel micromirrors head, the high pixel micromirrors head also meet following relationship：
-1<(R7+R8)/(R7-R8)<1
Wherein, R7, R8 are respectively the side of the object and image planes flank radius of the 4th lens.
A kind of above-mentioned high pixel micromirrors head, the high pixel micromirrors head also meet following relationship：
0.5<F4/F<1.0
Wherein, F4 is the 4th focal length of lens, and F is system focal length.
A kind of above-mentioned high pixel micromirrors head, the high pixel micromirrors head also meet following relationship：
0.53<Y1/ImgH<0.95
Wherein, Y1 indicates that the effective clear aperture in image planes side of the 4th lens, ImgH are half image height.
A kind of above-mentioned high pixel micromirrors head, the high pixel micromirrors head also meet following relationship：
ET4/CT4<1.6
Wherein, ET4 is the 4th lens perimeter thickness, and CT4 is the 4th lens centre, and the 4th lens side of the object of ET4=is most
The rise of four the-the four lens image planes of the lens center thickness side maximum effective diameter of rise+the of big effective diameter.
The utility model has the beneficial effects that：The utility model uses 5 aspherical glass lens, and it is total that optics may be implemented
Long to be less than 3.9mm, f-number is the bright camera lens of F2.0, has good performance for imaging also under darker environment, maximum picture
Circle isWhen to match 1/3 " Sensor Pixel Dimensions be 0.9um, pixel is up to the 16,000,000, and first lens, and second
Lens clear aperture is less thanStructure be applicable to shield smart phone comprehensively.
Detailed description of the invention
Fig. 1 is the optical axis direction sectional view of the high pixel micromirrors head of the utility model；
Fig. 2 is the X-Y scheme of the high pixel micromirrors head in the utility model embodiment 1；
Fig. 3 is the MTF transfer curve figure of the high pixel micromirrors head in the utility model embodiment 1；
Fig. 4 is the astigmatism curvature of field and optical distortion indicatrix of the high pixel micromirrors head in the utility model embodiment 1；
Fig. 5 is the defocusing curve of the high pixel micromirrors head in the utility model embodiment 1；
Fig. 6 is the X-Y scheme of the high pixel micromirrors head in the utility model embodiment 2；
Fig. 7 is the MTF transfer curve figure of the high pixel micromirrors head in the utility model embodiment 2；
Fig. 8 is the astigmatism curvature of field and optical distortion indicatrix of the high pixel micromirrors head in the utility model embodiment 2；
Fig. 9 is the defocusing curve of the imaging lens system group in the utility model embodiment 2.
In figure：P1. the first lens, the second lens of P2., P3. the third lens, the 4th lens of P4., the 5th lens of P5..
Specific embodiment
In order to more clearly state the utility model, the utility model is further described with reference to the accompanying drawing.
A kind of high pixel micromirrors head, the high pixel micromirrors head from object side, successively by：First with positive refracting power
Lens P1, there is negative refractive power, and object side is the second lens P2 on convex surface, there is negative refractive power, and image planes side is convex surface
The third lens P3, there is positive refracting power, and object side is the 4th lens P4 on convex surface and has negative refractive power, and image planes side is recessed
The 5th lens P5 in face is formed, and the distribution for the positive negative power of above 5 eyeglasses makes each aberration obtain good correction,
The system lateral color correction to less than 2um.And meet conditional below：
0.5<F1/F<1.2, wherein F1 is the first lens P1 focal length, and F is system focal length, this conditional is used to optimize first
Distribution ratio of the focal power of lens P1 in system focal power.
0.5<R5/R6<2.0, wherein R5 is the radius of curvature of the third lens P3 side of the object, and R6 is the third lens P3 picture
The radius of curvature of side.
A kind of above-mentioned high pixel micromirrors head, the high pixel micromirrors head also meet following relationship：
-1<(R7+R8)/(R7-R8)<1
Wherein, R7, R8 are respectively the side of the object and image planes flank radius of the 4th lens P4.This conditional is used to limit
The shape and focal power for making the 4th lens P4 meet this range and are conducive to anaberration and make the chief ray of system entering in image planes
Firing angle can preferably be matched with imaging sensor.
A kind of above-mentioned high pixel micromirrors head, the high pixel micromirrors head also meet following relationship：
0.5<F4/F<1.0
Wherein, F4 is the 4th lens P4 focal length, and F is system focal length.This conditional is used to optimize the light focus of the 4th lens P4
Spend the distribution ratio in system focal power.Meet this condition to be conducive to make system compact and anaberration.
A kind of above-mentioned high pixel micromirrors head, the high pixel micromirrors head also meet following relationship：
0.53<Y1/ImgH<0.95
Wherein, Y1 indicates that the effective clear aperture in image planes side of the 4th lens P4, ImgH are half image height.This conditional is advantageous
In realizing system, side of the object is more small-bore to meet the needs of comprehensive screen mobile phone structure designs.
A kind of above-mentioned high pixel micromirrors head, the high pixel micromirrors head also meet following relationship：
ET4/CT4<1.6
Wherein, ET4 is the 4th lens P4 peripheral thickness, and CT4 is the 4th center lens P4, the 4th lens P4 object of ET4=
The rise of four lens P4 center thickness the-the four lens P4 image planes side maximum effective diameter of rise+the of side maximum effective diameter.
5 eyeglasses of high pixel micromirrors head all use even aspheric surface glass lens, and asphericity coefficient meets such as lower section
Journey：
Z=cy2/[1+{1-(1+k)c2y2}+1/2]+A4y4+A6y6+A8y8
+A10y10+A12y12+A14y14+A16y16+A18y18+A20y20
Wherein,
Z：Aspherical rise,
C：Aspherical paraxial curvature,
y：Camera lens aperture,
k：Circular cone coefficient,
A4：4 asphericity coefficients,
A6：6 asphericity coefficients,
A8：8 asphericity coefficients,
A10：10 asphericity coefficients,
A12：12 asphericity coefficients,
A14：14 asphericity coefficients,
A16：16 asphericity coefficients,
A18：18 asphericity coefficients,
A20：20 asphericity coefficients.
The utility model uses 5 aspherical glass lens, optics overall length may be implemented less than 3.9mm, f-number is
The bright camera lens of F2.0 has good performance for imaging also under darker environment, maximum as circle isMatching 1/3 "
When Sensor Pixel Dimensions are 0.9um, pixel is up to 16,000,000.And the first lens P1, the second lens P2 clear aperture are less thanStructure be applicable to shield smart phone comprehensively.
Embodiment 1
Field angle is 77.2 °, aperture F2.06, and optics overall length TTL (distance of eyeglass front end to image planes) TTL is
The optical system that 4.22mm, image height and TTL ratio are 0.692.The design parameter of high pixel micromirrors head please refers to table 1 (a) and table 1
(b)。
Table 1 (a)
| Surface number | Surface type | Radius of curvature | Thickness | Material property (Nd:Vd) | Effective aperture |
| Object | Spherical surface | Infinitely | 0 | 0.8647 | |
| stop | Spherical surface | Infinitely | 0 | 0.8647 | |
| 2 | It is aspherical | 1.423338 | 0.702574 | 1.546:56.124 | 0.8200 |
| 3 | It is aspherical | 16.42526 | 0.060882 | 0.8160 | |
| 4 | It is aspherical | 19.26528 | 0.051907 | 1.661:20.354 | 0.8000 |
| 5 | It is aspherical | 3.4149 | 0.292834 | 0.8555 | |
| 6 | It is aspherical | 50 | 0.02 | 1.546:56.124 | 1.0817 |
| 7 | It is aspherical | 50 | 0.02 | 1.5313 | |
| 8 | It is aspherical | 9.987147 | 0.100129 | 1.546:56.124 | 1.8016 |
| 9 | It is aspherical | -1.84296 | -0.5426 | 1.9500 | |
| 10 | It is aspherical | 5.910426 | 0.169193 | 1.535:56.11 | 2.2272 |
| 11 | It is aspherical | 0.953232 | 1.049062 | 2.5233 | |
| 12 | Spherical surface | Infinitely | 0 | 2.5926 | |
| 13 | Spherical surface | Infinitely | 0 | 2.9249 | |
| Picture | Spherical surface | Infinitely | 0 |
Table 1 (b)
F1/F=0.7935, F4/F=0.8155, the Y1/ImgH=0.7627 of high pixel micromirrors head in the present embodiment,
ET4/CT4=0.704, R5/R6=1, (R7+R8)/(R7-R8)=0.6884.
As shown in Fig. 2, being the X-Y scheme of high pixel micromirrors head in the present embodiment.The lens shape ratio of the high pixel micromirrors head
It is more well-balanced, convenient for molding production.And eyeglass spacing is reasonable, designs convenient for the structure in later period.
As shown in figure 3, be the MTF transfer curve figure (optical transfer function) of high pixel micromirrors head in the present embodiment,
Can be with the image quality of concentrated expression system, curve shape is more smooth, and the height of opposite X-axis is higher, it was demonstrated that system at
Image quality amount is better, the use of the new type camera lens clarity with higher.
As shown in figure 4, being the astigmatism curvature of field of high pixel micromirrors head and optical distortion indicatrix in the present embodiment.
As shown in figure 5, be the defocusing curve of high pixel micromirrors head in the present embodiment, respectively indicate 0 visual field, 0.4 visual field,
The optical property and defocusing amount of 0.6 visual field, 0.8 visual field and 1.0 visual fields.Peak of curve distance center point is closer, indicates optical
Can be better, place is also smaller.
Embodiment 2
Field angle is 77.2 °, aperture F2.06, and optics overall length TTL (distance of eyeglass front end to image planes) TTL is
The optical system that 4.22mm, image height and TTL ratio are 0.6.
The design parameter of high pixel micromirrors head please refers to table 2 (a) and table 2 (b)：
Table 2 (a)
| Surface number | Surface type | Radius of curvature | Thickness | Material property (Nd:Vd) | Effective aperture |
| Object | Spherical surface | Infinitely | 0 | ||
| stop | Spherical surface | Infinitely | 0 | 0.8636 | |
| 2 | It is aspherical | 1.42654 | 0.701 | 1.546:56.124 | 0.8656 |
| 3 | It is aspherical | 11.5625 | 0.08649 | 0.8100 | |
| 4 | It is aspherical | 11.4334 | 0.08746 | 1.661:20.354 | 0.8007 |
| 5 | It is aspherical | 3.1791 | 0.31455 | 0.7700 | |
| 6 | It is aspherical | 2181.79 | 0.00046 | 1.546:56.124 | 0.8826 |
| 7 | It is aspherical | -134.26 | -0.0074 | 1.1248 | |
| 8 | It is aspherical | 7.60466 | 0.1315 | 1.546:56.124 | 1.5164 |
| 9 | It is aspherical | -1.7961 | -0.5568 | 1.8206 | |
| 10 | It is aspherical | -22.296 | -0.0449 | 1.535:56.11 | 1.9700 |
| 11 | It is aspherical | 1.13546 | 0.8807 | 2.2287 | |
| 12 | Spherical surface | Infinitely | 0 | 2.6690 | |
| 13 | Spherical surface | Infinitely | 0 | 2.7395 | |
| Picture | Spherical surface | Infinitely | 0 | 2.9368 |
Table 2 (b)
The value that the value of the F1/F of high pixel micromirrors head is 0.85, R5/R6 in the present embodiment is 1.02, (R7+R8)/(R7-
R8 the value that value) is 0.71, F4/F is 0.74,0.53<Y1/ImgH<0.95 value is 0.77.
As shown in fig. 6, being the X-Y scheme of high pixel micromirrors head in the present embodiment.
As shown in fig. 7, being the MTF transfer curve figure (optical transfer function) of high pixel micromirrors head in the present embodiment.
As shown in figure 8, being the astigmatism curvature of field of high pixel micromirrors head and optical distortion indicatrix in the present embodiment.
As shown in figure 9, being the defocusing curve of high pixel micromirrors head in the present embodiment.
The embodiment created above to the utility model is described in detail, but the content is only the utility model wound
The preferred embodiment made, should not be considered as limiting the scope of the present invention.It is all to create range according to the utility model
Made all the changes and improvements etc., shall still fall within the scope of this patent.
Claims (5)
1. a kind of high pixel micromirrors head, which is characterized in that the high pixel micromirrors head from object side, successively by：With positive folding
It penetrates the first lens (P1) of power, there is negative refractive power, and object side is second lens (P2) on convex surface, has negative refractive power, and
Image planes side is the third lens (P3) on convex surface, has positive refracting power, and object side is the 4th lens (P4) on convex surface and has negative
Refracting power, and image planes side is the 5th lens (P5) composition of concave surface, and meets conditional below：
0.5<F1/F<1.2
0.5<R5/R6<2.0
Wherein, F1 is the first lens (P1) focal length, and F is system focal length, and R5 is the radius of curvature of the third lens (P3) side of the object,
R6 is the radius of curvature of the third lens (P3) image planes side.
2. a kind of high pixel micromirrors head according to claim 1, which is characterized in that the high pixel micromirrors head also meet with
Lower relational expression：
-1<(R7+R8)/(R7-R8)<1
Wherein, R7, R8 are respectively the side of the object and image planes flank radius of the 4th lens (P4).
3. a kind of high pixel micromirrors head according to claim 1, which is characterized in that the high pixel micromirrors head also meet with
Lower relational expression：
0.5<F4/F<1.0
Wherein, F4 is the 4th lens (P4) focal length, and F is system focal length.
4. a kind of high pixel micromirrors head according to claim 1, which is characterized in that the high pixel micromirrors head also meet with
Lower relational expression：
0.53<Y1/ImgH<0.95
Wherein, Y1 indicates that the effective clear aperture in image planes side of the 4th lens (P4), ImgH are half image height.
5. a kind of high pixel micromirrors head according to claim 1, which is characterized in that the high pixel micromirrors head also meet with
Lower relational expression：
ET4/CT4<1.6
Wherein, ET4 is the 4th lens (P4) peripheral thickness, and CT4 is the 4th center lens (P4), ET4=the 4th lens (P4) object
Four lens of rise+the (P4) center thickness-the, four lens (P4) the image planes side maximum effective diameter of body side surface maximum effective diameter
Rise.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111352211A (en) * | 2018-12-23 | 2020-06-30 | 辽宁中蓝电子科技有限公司 | Small-head high-resolution lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111352211A (en) * | 2018-12-23 | 2020-06-30 | 辽宁中蓝电子科技有限公司 | Small-head high-resolution lens |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200422 Address after: 124000 2F, No.4 electronic workshop, high tech Industrial Development Zone, no.388, Zhonghua North Road, Xinglongtai District, Panjin City, Liaoning Province Patentee after: Liaoning Zhonglan Photoelectric Technology Co., Ltd Address before: 124000 Xinglongtai District, Panjin, Liaoning Province, China Road East Patentee before: LIAONING ZHONGLAN ELECTRONIC TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A high pixel micro lens Effective date of registration: 20210726 Granted publication date: 20181130 Pledgee: China Construction Bank Corporation Panjin branch Pledgor: Liaoning Zhonglan Photoelectric Technology Co.,Ltd. Registration number: Y2021210000049 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |