CN108445611A - Without the high-resolution tight shot of thermalization - Google Patents
Without the high-resolution tight shot of thermalization Download PDFInfo
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- CN108445611A CN108445611A CN201810578495.4A CN201810578495A CN108445611A CN 108445611 A CN108445611 A CN 108445611A CN 201810578495 A CN201810578495 A CN 201810578495A CN 108445611 A CN108445611 A CN 108445611A
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- lens
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
A kind of high-resolution tight shot of no thermalization includes successively from the object side to image side：Pre-group eyeglass, diaphragm with negative power, rear group's eyeglass with positive light coke and imaging surface；The pre-group eyeglass includes the first lens group, the second lens with negative power and the third lens with positive light coke successively；Rear group's eyeglass includes the 4th lens with positive light coke, the 5th lens, the 6th lens with negative power and the 7th lens with positive light coke with positive light coke successively.The present invention devises a kind of miniaturization, high image quality, without the tight shot of thermalization by the way of spherical surface and aspherical reasonable combination, it is not only simple in structure, it is of low cost, and the low defect of existing simple structure eyeglass image quality is overcome, distortion and aberration has been well controllled in full filed.
Description
Technical field
The present invention relates to a kind of technologies of optical imaging field, and specifically a kind of focal length is in 5.8~6.2mm without heat
Change high-resolution tight shot.
Background technology
Requirement with people to picture catching and record is higher and higher, and the occasion used is more and more extensive, originally
Some are complicated, and bulky tight shot can no longer meet demand, and simple small size tight shot often as
Element is too low, can not work normally in thermal extremes or low temperature environment, can not adapt to various use environments, it is even more impossible to meet people
Pursuit to image quality.Pursue use scope it is wide while, and need camera lens meet high image quality, small size need for exhibition, open
Send out the problem that such novel tight shot has become highly desirable solution in industry.
Invention content
The present invention is directed to deficiencies of the prior art, proposes a kind of no high-resolution tight shot of thermalization, energy
It is enough to realize miniaturization, high image quality, without thermalization and small distortion.
The present invention is achieved by the following technical solutions：
The present invention includes successively from the object side to image side：Pre-group eyeglass, diaphragm with negative power, with positive light coke
Group's eyeglass and imaging surface afterwards.
The pre-group eyeglass is successively comprising the first lens group, the second lens with negative power and with positive light coke
The third lens；Rear group's eyeglass includes the 4th lens with positive light coke successively, the with positive light coke the 5th saturating
Mirror, the 6th lens with negative power and the 7th lens with positive light coke.
At least contain six pieces of spheric glasses and one piece of aspherical lens in seven pieces of lens.
Optical filtering and protective glass are equipped between rear group's eyeglass and imaging surface successively.
The ratio of the focal length of the pre-group eyeglass and the focal length of rear group's eyeglass is (- 2.5, -1.5).
The focal length of the pre-group eyeglass and the ratio of the whole focal length of camera lens are (- 4, -2).
The focal length of rear group's eyeglass and the ratio of the whole focal length of camera lens are (1.2,1.5).
The focal length of first lens group and the ratio of the whole focal length of camera lens are (- 4, -2).
The focal length of second lens and the ratio of the whole focal length of camera lens are (- 1.5, -0.5).
The focal length of the third lens and the ratio of the whole focal length of camera lens are (0.8,1.8).
The focal length of 4th lens and the ratio of the whole focal length of camera lens are (1,3).
The focal length of 5th lens and the ratio of the whole focal length of camera lens are (2,4).
The focal length of 6th lens and the ratio of the whole focal length of camera lens are (- 1.5, -0.5).
The focal length of 7th lens and the ratio of the whole focal length of camera lens are (1.5,5).
The refractive index of the rear lens of first lens group is (1.4,1.5)；The refractive index of the third lens is
(1.85,1.95)。
The optic back focal of the camera lens away from the whole focal length ratio of camera lens be (1,2).
The ratio of the aspherical center thickness and edge thickness of 7th lens is (0.5,1.5), with guarantee property
It can stablize.
The ratio of the whole focal length of the aspherical focal length and camera lens of 7th lens is (4,6).
The light of the outermost visual field of the camera lens and the incidence angle of image planes are less than 10 degree, to ensure the light of surrounding visual field
Than.
The diaphragm is individually set up or using the second surface of the third lens as diaphragm, to save cost.
Technique effect
Compared with prior art, the present invention devised by the way of spherical surface and aspherical reasonable combination it is a kind of miniaturization,
High image quality, the tight shot without thermalization, are not only simple in structure, of low cost, and overcome existing simple structure eyeglass image quality
Distortion and aberration has been well controllled in full filed in low defect.
Description of the drawings
Fig. 1 is the semi-cutaway of embodiment 1；
Fig. 2 is aberration diagram on the axis of embodiment 1；
Fig. 3 is the ratio chromatism, figure of embodiment 1；
Fig. 4 is the semi-cutaway of embodiment 2；
Fig. 5 is aberration diagram on the axis of embodiment 2；
Fig. 6 is the ratio chromatism, figure of embodiment 2；
Fig. 7 is the semi-cutaway of embodiment 3；
Fig. 8 is aberration diagram on the axis of embodiment 3；
Fig. 9 is the ratio chromatism, figure of embodiment 3；
In figure：Pre-group eyeglass G1, diaphragm STP, rear group's eyeglass G2, imaging surface IMG, optical filtering IRCF, the first lens group L1,
Second lens L2, the third lens L3, the 4th lens L4, the 5th lens L5, the 6th lens L6, the 7th lens L7, protective glass CG,
First front lens L51, the first rear lens L52, the second front lens L11, the second rear lens L12.
Specific implementation mode
Embodiment 1
As shown in Figure 1, the present embodiment includes successively from the object side to image side：Pre-group eyeglass G1, diaphragm with negative power
STP, rear group's eyeglass G2 with positive light coke and imaging surface IMG.
The pre-group eyeglass G1 includes successively：First lens group L1, the second lens L2 with negative power and have
The third lens L3 of positive light coke.
The first lens group L1 is the first lens with negative power.
Rear group's eyeglass G2 includes successively：The 4th lens L4 with positive light coke, the with positive light coke the 5th
Lens L5, the 6th lens L6 with negative power and the 7th lens L7 with positive light coke.
First lens group L1, the second lens L2 and the 6th lens L6 is concavees lens；The third to the 5th thoroughly
Mirror L3~L5 and the 7th lens L7 is convex lens.
Hereinafter, showing the various numeric datas about the present embodiment.
Focal length F=6.1mm；Relative aperture FNO=2.2mm；FOV=67.5 ° of field angle.
1 the present embodiment lens construction parameter of table
| Surface serial number | Surface type | Radius of curvature | Thickness | Refractive index | Abbe number |
| 1 | Spherical surface | 12.78 | 0.70 | 1.77 | 38 |
| 2 | Spherical surface | 3.88 | 2.26 | ||
| 3 | Spherical surface | -4.79 | 3.03 | 1.49 | 81 |
| 4 | Spherical surface | -7.17 | 0.10 | ||
| 5 | Spherical surface | 16.37 | 1.41 | 1.65 | 50 |
| 6 | Spherical surface | -16.37 | 0.82 | ||
| Diaphragm | Spherical surface | Infinitely | 3.81 | ||
| 8 | Spherical surface | 30.73 | 1.13 | 1.83 | 37 |
| 9 | Spherical surface | -14.05 | 0.10 | ||
| 10 | Spherical surface | 5.86 | 2.85 | 1.49 | 81 |
| 11 | Spherical surface | -8.00 | 0.73 | 1.84 | 23 |
| 12 | Spherical surface | 4.51 | 2.70 | ||
| 13 | It is aspherical | 12.97 | 2.36 | 1.83 | 37 |
| 14 | It is aspherical | -14.27 | 2.00 | ||
| 15 | Spherical surface | Infinitely | 0.30 | 1.51 | 64 |
| 16 | Spherical surface | Infinitely | 0.10 | ||
| 17 | Spherical surface | Infinitely | 0.50 | 1.51 | 64 |
| 18 | Spherical surface | Infinitely | 0.09 | ||
| Image planes |
The 5th lens L5 and the 6th lens L6 in the present embodiment is glued together, and the second surface of the 5th lens L5 is the
The first surface of six lens L6.
The 7th lens L7 is non-spherical lens in the present embodiment, and wherein non-spherical lens coefficient is：
Z is the sag values of lens, and c is the inverse of radius of curvature, and h is height of the lens side to optical axis, and k is circular cone coefficient, A,
B, C, D and E respectively represent order aspherical coefficients.
Table 2 is the present embodiment camera lens asphericity coefficient
| Surface serial number | K | A4 | B6 | C8 | D10 |
| 13 | -7.489113359 | -0.000927254 | -9.02E-05 | 2.96E-06 | -2.98E-08 |
| 14 | -5.63113955 | -2.61E-04 | -8.95E-05 | 2.66E-06 | 1.66E-08 |
As shown in Fig. 2, for aberration diagram on the axis of the present embodiment, including axial chromatic aberration, the curvature of field and distortion.It is aobvious according to image
Show, the axial chromatic aberration of the present embodiment redgreenblue is obtained for good correction in full filed, can blur-free imaging, ensure that height
The demand of image quality.It is shown according to curvature of field curve, within the scope of full filed, T lines and S lines have preferable convergence, the curvature of field and astigmatism
It is very outstanding, ensure that entire picture imaging is uniform.It is shown according to distortion curve, distortion curve is integrally controlled in minimum range
Interior and periphery distortion curve increases the value for smoothly effectively controlling TV distortion.
As shown in figure 3, being light chromaticity difference diagram, shown according to image, the present embodiment to the ratio chromatism, of redgreenblue and
Coma has carried out preferable amendment, the phenomenon that making imaging picture not have apparent purple boundary, red side or fuzzy pictures, has reached height
The requirement of image quality.
Embodiment 2
As shown in figure 4, compared with Example 1, rear group's eyeglass G2 of the present embodiment includes successively：With positive light coke
Four lens L4, the 5th lens L5 with positive light coke, the 6th lens L6 with negative power and with positive light coke
Seven lens L7.
The 5th lens L5 is balsaming lens, including the first front lens L51 and the first rear lens L52.
Hereinafter, showing the various numeric datas about the present embodiment.
Focal length F=6mm；Relative aperture FNO=2.1mm；FOV=66.5 ° of field angle.
3 the present embodiment lens construction parameter of table
The 5th lens L5 in the present embodiment is glued mirror, after the second surface of the first front lens L51 is first
The first surface of eyeglass L52.
Table 4 is the present embodiment camera lens asphericity coefficient
| Surface serial number | K | A4 | B6 | C8 | D10 |
| 15 | -99 | -0.001395907 | 3.06E-05 | -9.28E-07 | 2.38E-07 |
| 16 | 2.384767655 | -2.48E-04 | -9.69E-05 | 1.05E-05 | -1.54E-07 |
As shown in figure 5, for aberration diagram on the axis of the present embodiment, including axial chromatic aberration, the curvature of field and distortion.It is aobvious according to image
Show, the axial chromatic aberration of the present embodiment redgreenblue is obtained for good correction in full filed, can blur-free imaging, ensure that height
The demand of image quality.It is shown according to curvature of field curve, within the scope of full filed, T lines and S lines have preferable convergence, the curvature of field and astigmatism
It is very outstanding, ensure that entire picture imaging is uniform.It is shown according to distortion curve, compared with Example 1, the distortion of the present embodiment
It is controlled in the range of smaller and distortion curve growth in periphery is more smooth, accomplished that the value of full filed TV distortion is respectively less than
1%.The present embodiment further improves the image quality of camera lens in the case where increasing by one piece of eyeglass, reduces and distorts and subtract
The small focal length of camera lens, makes it be performed better than in low photograph.
As shown in fig. 6, being light chromaticity difference diagram, shown according to image, the present embodiment to the ratio chromatism, of redgreenblue and
Coma has carried out preferable amendment, the phenomenon that making imaging picture not have apparent purple boundary, red side or fuzzy pictures, has reached height
The requirement of image quality.
Embodiment 3
As shown in fig. 7, compared with Example 2, the pre-group eyeglass G1 of the present embodiment includes successively：First lens group L1, tool
There are the second lens L2 of negative power and the third lens L3 with positive light coke.
The first lens group L1 is two pieces of eyeglasses, is followed successively by the second front lens L11 with positive light coke and has
Second rear lens L12 of negative power.
Hereinafter, showing the various numeric datas about the present embodiment.
Focal length F=5.8mm；Relative aperture FNO=1.8mm；FOV=66.5 ° of field angle.
5 the present embodiment lens construction parameter of table
The 5th lens L5 in the present embodiment is glued mirror, after the second surface of the first front lens L51 is first
The first surface of eyeglass L52.
Table 6 is the present embodiment camera lens asphericity coefficient
| Surface serial number | K | A4 | B6 | C8 | D10 |
| 17 | -14.48445452 | 0.0003119 | 2.63E-04 | -4.07E-06 | 1.10E-07 |
| 18 | -70.5084457 | 6.05E-04 | 1.70E-04 | -1.59E-06 | -6.08E-08 |
As shown in figure 8, for aberration diagram on the axis of the present embodiment, including axial chromatic aberration, the curvature of field and distortion.The present embodiment increases
One piece of eyeglass further decreases the focal length of camera lens, camera lens is made to exist on the basis of ensureing that the performance of embodiment 2 is basically unchanged
Imaging effect is more preferable in the case of low photograph, and by the moulded glass of script, aspherical to be changed to plastic cement aspherical to save cost and strictly control
Temperature drift processed makes its imaging effect still keep good state under high and low temperature extreme, increases the use scope of camera lens.
As shown in figure 9, being light chromaticity difference diagram, shown according to image, the present embodiment to the ratio chromatism, of redgreenblue and
Coma has carried out preferable amendment, the phenomenon that making imaging picture not have apparent purple boundary, red side or fuzzy pictures, has reached height
The requirement of image quality.
Above-mentioned specific implementation can by those skilled in the art under the premise of without departing substantially from the principle of the invention and objective with difference
Mode carry out local directed complete set to it, protection scope of the present invention is subject to claims and not by above-mentioned specific implementation institute
Limit, each implementation within its scope is by the constraint of the present invention.
Claims (9)
1. a kind of high-resolution tight shot of no thermalization, which is characterized in that include successively from the object side to image side：With negative light focus
Pre-group eyeglass, diaphragm, the rear group's eyeglass and imaging surface with positive light coke of degree；The pre-group eyeglass includes first saturating successively
Microscope group, the second lens with negative power and the third lens with positive light coke；Rear group's eyeglass includes tool successively
There are the 4th lens of positive light coke, the 5th lens with positive light coke, the 6th lens with negative power and with positive light
7th lens of focal power.
2. the high-resolution tight shot of no thermalization according to claim 1, characterized in that in seven pieces of lens extremely
Contain six pieces of spheric glasses and one piece of aspherical lens less.
3. the high-resolution tight shot of no thermalization according to claim 1, characterized in that rear group's eyeglass and at
Optical filtering and protective glass are equipped between image planes successively.
4. the high-resolution tight shot of no thermalization according to claim 1, characterized in that the coke of the pre-group eyeglass
Ratio away from the focal length with rear group's eyeglass is (- 2.5, -1.5)；The focal length of the pre-group eyeglass and the whole focal length of camera lens
Ratio is (- 4, -2)；The focal length of rear group's eyeglass and the ratio of the whole focal length of camera lens are (1.2,1.5).
5. the high-resolution tight shot of no thermalization according to claim 1, characterized in that first lens group
The ratio of the whole focal length of focal length and camera lens is (- 4, -2)；The focal length of second lens and the ratio of the whole focal length of camera lens be (-
1.5,-0.5)；The focal length of the third lens and the ratio of the whole focal length of camera lens are (0.8,1.8)；The focal length and mirror of 4th lens
The ratio of the whole focal length of head is (1,3)；The focal length of 5th lens and the ratio of the whole focal length of camera lens are (2,4)；6th thoroughly
The focal length of mirror and the ratio of the whole focal length of camera lens are (- 1.5, -0.5)；The focal length of 7th lens and the whole focal length of camera lens
Ratio is (1.5,5).
6. the high-resolution tight shot of no thermalization according to claim 1, characterized in that first lens group
The refractive index of rear lens is (1.4,1.5)；The refractive index of the third lens is (1.85,1.95).
7. the high-resolution tight shot of no thermalization according to claim 1, characterized in that after the optics of the camera lens
The whole focal length ratio of focal length and camera lens is (1,2).
8. the high-resolution tight shot of no thermalization according to claim 1, characterized in that the 7th lens it is non-
The center thickness of spherical surface and the ratio of edge thickness are (0.5,1.5)；The ratio of the whole focal length of its aspherical focal length and camera lens
Value is (4,6).
9. the high-resolution tight shot of no thermalization according to claim 1, characterized in that the outermost of the camera lens regards
The light of field and the incidence angle of image planes are less than 10 degree, to ensure the bright ratio of surrounding visual field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810578495.4A CN108445611A (en) | 2018-06-07 | 2018-06-07 | Without the high-resolution tight shot of thermalization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810578495.4A CN108445611A (en) | 2018-06-07 | 2018-06-07 | Without the high-resolution tight shot of thermalization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108445611A true CN108445611A (en) | 2018-08-24 |
Family
ID=63206741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810578495.4A Pending CN108445611A (en) | 2018-06-07 | 2018-06-07 | Without the high-resolution tight shot of thermalization |
Country Status (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109445068A (en) * | 2018-12-05 | 2019-03-08 | 江西联创电子有限公司 | Vehicle-mounted pick-up camera lens and imaging device |
| CN109541780A (en) * | 2018-11-16 | 2019-03-29 | 江西联创电子有限公司 | Optical lens and imaging device |
| CN111045191A (en) * | 2018-10-12 | 2020-04-21 | 柯尼卡美能达株式会社 | Optical system, lens unit, and imaging device |
| CN111487744A (en) * | 2019-01-28 | 2020-08-04 | 信泰光学(深圳)有限公司 | Imaging lens |
| CN111830672A (en) * | 2019-04-18 | 2020-10-27 | 宁波舜宇车载光学技术有限公司 | Optical lens and imaging apparatus |
| WO2021128142A1 (en) * | 2019-12-26 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Photographic optical lens |
| CN113238348A (en) * | 2019-05-16 | 2021-08-10 | 浙江舜宇光学有限公司 | Optical imaging lens |
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| CN111045191A (en) * | 2018-10-12 | 2020-04-21 | 柯尼卡美能达株式会社 | Optical system, lens unit, and imaging device |
| CN109541780A (en) * | 2018-11-16 | 2019-03-29 | 江西联创电子有限公司 | Optical lens and imaging device |
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| CN111487744B (en) * | 2019-01-28 | 2022-04-19 | 信泰光学(深圳)有限公司 | Imaging lens |
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| US11391922B2 (en) | 2019-01-28 | 2022-07-19 | Sintai Optical (Shenzhen) Co., Ltd. | Lens assembly including seven lenses of −−+++−+ refractive powers |
| CN111830672B (en) * | 2019-04-18 | 2021-12-17 | 宁波舜宇车载光学技术有限公司 | Optical lens and imaging apparatus |
| CN111830672A (en) * | 2019-04-18 | 2020-10-27 | 宁波舜宇车载光学技术有限公司 | Optical lens and imaging apparatus |
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| WO2021128142A1 (en) * | 2019-12-26 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Photographic optical lens |
| CN113759497A (en) * | 2020-05-27 | 2021-12-07 | 宁波舜宇车载光学技术有限公司 | Optical lens and electronic device |
| WO2022028625A1 (en) * | 2020-08-05 | 2022-02-10 | 宁波舜宇车载光学技术有限公司 | Optical lens and electronic device |
| CN113376802B (en) * | 2021-06-16 | 2022-10-14 | 嘉兴中润光学科技股份有限公司 | DV lens and image pickup device |
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| CN116256875A (en) * | 2023-05-15 | 2023-06-13 | 江西联创电子有限公司 | Optical lens |
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Address after: 314000 No.188, Taojing Road, Gaozhao street, Xiuzhou District, Jiaxing City, Zhejiang Province Applicant after: Jiaxing Zhongrun Optical Technology Co.,Ltd. Address before: 314000 Room 2F201-6, Building 6, Jiaxing Photovoltaic Science Park, 1288 Kanghe Road, Xiuzhou District, Jiaxing City, Zhejiang Province Applicant before: JIAXING ZHONGRUN OPTICAL SCIENCE AND TECHNOLOGY Co.,Ltd. |
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Application publication date: 20180824 |