CN208297812U - Optics plastic cement camera lens - Google Patents
Optics plastic cement camera lens Download PDFInfo
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- CN208297812U CN208297812U CN201820949798.8U CN201820949798U CN208297812U CN 208297812 U CN208297812 U CN 208297812U CN 201820949798 U CN201820949798 U CN 201820949798U CN 208297812 U CN208297812 U CN 208297812U
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- plastic cement
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Abstract
The utility model relates to technical field of optical, more particularly to a kind of optics plastic cement camera lens, be successively arranged from object side to image side: the first lens that focal length is positive are plastic aspheric lenes, its object side is that positive focal length is aspherical, and image side surface is negative focal length circular aspheric；Diaphragm；The second lens that focal length is positive are plastic aspheric lenes；Its object side is that positive focal length oblateness is aspherical, and image side surface is positive focal length circular aspheric；The third lens that focal length is positive are plastic aspheric lenes；Its object side is that negative focal length falcate is aspherical, and image side surface is that positive focal length falcate is aspherical；Optical filter；Sensitive film；In the present solution, the optics plastic cement camera lens use plastic cement non-spherical structure, therefore the image quality of optical system arrive large increase, the product can be made to have preferable resolution ratio, transmitance, and color reducibility is significantly improved.
Description
Technical field
The utility model relates to technical field of optical, more particularly to a kind of optics plastic cement camera lens.
Background technique
At present all there is many deficiencies in optical lens, and traditional camera lens is assembled by glass lens, or use glass
Modeling lens Hybrid assembling forms, and not only volume is larger for this camera lens, it has not been convenient to carry, simultaneously because heavier mass, leads to entirety
Optical system is more heavy, and use is extremely inconvenient.
Utility model content
Based on this, it is necessary in view of the above technical problems, provide a kind of using light optics plastic cement camera lens.
A kind of optics plastic cement camera lens, is successively arranged from object side to image side:
The first lens that focal length is positive are plastic aspheric lenes, and object side is that positive focal length is aspherical, and image side surface is negative
Focal length circular aspheric；
Diaphragm；
The second lens that focal length is positive are plastic aspheric lenes；Its object side is that positive focal length oblateness is aspherical, image side
Face is positive focal length circular aspheric；
The third lens that focal length is positive are plastic aspheric lenes；Its object side is that negative focal length falcate is aspherical, image side
Face is that positive focal length falcate is aspherical；
Optical filter；
Sensitive film.
Optical system meets following relationship in one of the embodiments:
6<f1/f2<8；
-1.0<f2/f3<1.0；
Wherein, f1 is the focal length of the first lens, and f2 is the focal length of the second lens, and f3 is the focal length of the third lens.
Optical system meets following relationship in one of the embodiments:
Vdlens2 > 31, vdlens3 > 31, vdlens1 < 30；
vdlens2-vdlens1>30；
vdlens3-vdlens1>30；
Wherein, vdlens1 is the abbe number of the first lens, and vdlens2 is the abbe number of the second lens, vdlens3
For the abbe number of the third lens.
Optical system meets following relationship in one of the embodiments:
IMH/F > 0.79；
Wherein, F is the focal length of optical system, and IMH is the image height of optical system.
The refractive index of the non-spherical lens is all larger than or is equal to 1.5 in one of the embodiments,.
In one of the embodiments, first lens, the second lens, the third lens aspherical surface shape meet
Equation:
Parameter c is curvature corresponding to radius in aforesaid equation, and y is its unit of radial coordinate and length of lens unit phase
Together, k is circular cone whose conic coefficient, α1To α8Respectively indicate coefficient corresponding to each radial coordinate；When k-factor is less than -1, thoroughly
The face shape curve of mirror is hyperbola；When k-factor is equal to -1, the face shape curve of lens is parabola；When k-factor is between -1 to 0
Between when, the face shape curves of lens is ellipse, and when k-factor is equal to 0, the face shape curve of lens is circle, when k-factor is greater than 0
When, the face shape curve of lens is oblateness.
Compared with prior art, the utility model at least has the following advantages:
1, the lens focus of the utility model can reach 2.57mm.
2, the whole uniform, high brightness of the illumination image planes of the utility model, F-number reach F1.4.
3, the utility model camera lens overall length is less than 4.2mm.
4, the utility model use plastic cement non-spherical structure, therefore the image quality of optical system arrive large increase, can
So that the product has preferable resolution ratio, transmitance, color reducibility to be significantly improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model one embodiment；
Fig. 2 is that the MTF of the utility model one embodiment schemes.
Specific embodiment
Specific embodiment of the present utility model is further elaborated below in conjunction with Fig. 1 and Fig. 2.
A kind of optics plastic cement camera lens, is successively arranged from object side to image side:
The first lens 1 that focal length is positive are plastic aspheric lenes, and object side is that positive focal length is aspherical, and image side surface is
Negative focal length circular aspheric；
Diaphragm 2；
The second lens 3 that focal length is positive are plastic aspheric lenes；Its object side is that positive focal length oblateness is aspherical, as
Side is positive focal length circular aspheric；
The third lens 4 that focal length is positive are plastic aspheric lenes；Its object side is that negative focal length falcate is aspherical, as
Side is that positive focal length falcate is aspherical；
Optical filter 5；
Sensitive film 6.
Light enters from optical filter 5, and optical filter 5 has certain protective effect to sensitive film 6, while also filtering out one
Light splitter reduces veiling glare and hot spot etc., while improving the beautiful degree of image color and sharpness, has image color good
Color reducibility.
Optical system meets following relationship in one of the embodiments:
6<f1/f2<8；
-1.0<f2/f3<1.0；
Wherein, f1 is the focal length of the first lens 1, and f2 is the focal length of the second lens 3, and f3 is the focal length of the third lens 4；So
The aberration profile of entire optical system can be balanced, guarantees optical system focal length f < 3.
Optical system meets following relationship in one of the embodiments:
Vdlens2 > 31, vdlens3 > 31, vdlens1 < 30；
vdlens2-vdlens1>30；
vdlens3-vdlens1>30；
Wherein, vdlens1 is the abbe number of the first lens 1, and vdlens2 is the abbe number of the second lens 3,
Vdlens3 is the abbe number of the third lens 4；So certifiable camera lens color difference control meets performance requirement within 2Pixel.
Optical system meets following relationship in one of the embodiments:
IMH/F > 0.79；
Wherein, F is the focal length of optical system, and IMH is the image height of optical system.
The refractive index of the non-spherical lens is all larger than or is equal to 1.5 in one of the embodiments,；Using higher refractive
The non-spherical lens of rate can increase optical extent of refraction so that the length of entire camera lens foreshorten to 4.2mm with
Under.
In one of the embodiments, first lens 1, the second lens 3, the third lens 4 aspherical surface shape
Meet equation:
Parameter c is curvature corresponding to radius in aforesaid equation, and y is its unit of radial coordinate and length of lens unit phase
Together, k is circular cone whose conic coefficient, α1To α8Respectively indicate coefficient corresponding to each radial coordinate；When k-factor is less than -1, thoroughly
The face shape curve of mirror is hyperbola；When k-factor is equal to -1, the face shape curve of lens is parabola；When k-factor is between -1 to 0
Between when, the face shape curves of lens is ellipse, and when k-factor is equal to 0, the face shape curve of lens is circle, when k-factor is greater than 0
When, the face shape curve of lens is oblateness.
The specific design parameter of camera lens is as shown in table 1 in the utility model one embodiment:
Table 1
The aspherical parameter of each lens of camera lens is as shown in table 2 in the utility model one embodiment:
Table 2
In the present embodiment, plastic cement non-spherical structure is used, the image quality of camera lens is greatly improved, so that the mirror
Head has good resolution ratio, transmitance, and imaged color reproducibility is significantly improved；As shown in Fig. 2, for mirror in the present embodiment
MTF (Modulation Transfer Function) curve graph of head.
Claims (6)
1. a kind of optics plastic cement camera lens, it is characterised in that: be successively arranged from object side to image side:
The first lens (1) that focal length is positive are plastic aspheric lenes, and object side is that positive focal length is aspherical, and image side surface is negative
Focal length circular aspheric；
Diaphragm (2)；
The second lens (3) that focal length is positive are plastic aspheric lenes；Its object side is that positive focal length oblateness is aspherical, image side
Face is positive focal length circular aspheric；
The third lens (4) that focal length is positive are plastic aspheric lenes；Its object side is that negative focal length falcate is aspherical, image side
Face is that positive focal length falcate is aspherical；
Optical filter (5)；
Sensitive film (6).
2. optics plastic cement camera lens according to claim 1, it is characterised in that: optical system meets following relationship:
6<f1/f2<8；
-1.0<f2/f3<1.0；
Wherein, f1 is the focal length of the first lens (1), and f2 is the focal length of the second lens (3), and f3 is the focal length of the third lens (4).
3. optics plastic cement camera lens according to claim 1, it is characterised in that: optical system meets following relationship:
Vdlens2 > 31, vdlens3 > 31, vdlens1 < 30；
vdlens2-vdlens1>30；
vdlens3-vdlens1>30；
Wherein, vdlens1 is the abbe number of the first lens (1), and vdlens2 is the abbe number of the second lens (3),
Vdlens3 is the abbe number of the third lens (4).
4. optics plastic cement camera lens according to claim 1, it is characterised in that: optical system meets following relationship:
IMH/F > 0.79；
Wherein, F is the focal length of optical system, and IMH is the image height of optical system.
5. optics plastic cement camera lens according to claim 1, it is characterised in that: the refractive index of the non-spherical lens is all larger than
Or it is equal to 1.5.
6. optics plastic cement camera lens according to claim 1, it is characterised in that: first lens (1), the second lens (3),
The aspherical surface shape of the third lens (4) meets equation:
Parameter c is curvature corresponding to radius in aforesaid equation, and y is that its unit of radial coordinate is identical with length of lens unit, k
For circular cone whose conic coefficient, α1To α8Respectively indicate coefficient corresponding to each radial coordinate；When k-factor is less than -1, lens
Face shape curve is hyperbola；When k-factor is equal to -1, the face shape curve of lens is parabola；When k-factor is between -1 to 0
When, the face shape curve of lens is ellipse, and when k-factor is equal to 0, the face shape curve of lens is circle, when k-factor is greater than 0, thoroughly
The face shape curve of mirror is oblateness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820949798.8U CN208297812U (en) | 2018-06-20 | 2018-06-20 | Optics plastic cement camera lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820949798.8U CN208297812U (en) | 2018-06-20 | 2018-06-20 | Optics plastic cement camera lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208297812U true CN208297812U (en) | 2018-12-28 |
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ID=64700733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820949798.8U Active CN208297812U (en) | 2018-06-20 | 2018-06-20 | Optics plastic cement camera lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732722A (en) * | 2018-06-20 | 2018-11-02 | 中山联合光电科技股份有限公司 | Plastic cement optical system |
-
2018
- 2018-06-20 CN CN201820949798.8U patent/CN208297812U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732722A (en) * | 2018-06-20 | 2018-11-02 | 中山联合光电科技股份有限公司 | Plastic cement optical system |
| CN108732722B (en) * | 2018-06-20 | 2024-06-11 | 中山联合光电科技股份有限公司 | Plastic optical system |
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