CN108897123A - Optical lens and automobile data recorder - Google Patents
Optical lens and automobile data recorder Download PDFInfo
- Publication number
- CN108897123A CN108897123A CN201811118350.2A CN201811118350A CN108897123A CN 108897123 A CN108897123 A CN 108897123A CN 201811118350 A CN201811118350 A CN 201811118350A CN 108897123 A CN108897123 A CN 108897123A
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- lens
- optical
- optical lens
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- lens group
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Classifications
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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
- G02B13/005—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having spherical lenses only
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
-
- 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
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The present invention provides a kind of optical lens and automobile data recorder, wherein optical lens includes setting gradually from object space to image space：Front lens group, diaphragm and rear lens group；The front lens group includes setting gradually from object space to image space：First lens and the second lens, first lens are the bent moon eyeglass for the negative power for being convex to object space or concave-concave, and second lens are the positive light coke eyeglass of biconvex；The diaphragm is located in the one side of second lens far from the object space；The rear lens group includes setting gradually from object space to image space：The third lens and the 4th lens, the cemented doublet of one positive light coke of the third lens and the 4th lens forming.First lens to the 4th lens, are all made of glass spheric glass in optical lens of the invention, have high temperature resistant, resistance to high humidity, and Anti-scratching, have not only met on-vehicle lens and have adapted to require to temperature change, but also have improved on-vehicle lens to the adaptability of adverse circumstances.
Description
Technical field
The present invention relates to the drivings of optical image technology field more particularly to a kind of optical lens and the application optical lens
Recorder.
Background technique
With the development of society, the application demand of on-vehicle lens is more more and more intense, relevant criterion is also higher and higher, especially
Automobile data recorder on-vehicle lens.Existing automobile data recorder on-vehicle lens, preferable image quality are reached using more the piece number, no
Only heavier-weight, volume are big, and production cost is higher；And horizontal field of view angle is generally at 120 ° or less；And to temperature change compared with
For sensitivity, under high temperature or cryogenic conditions, image blur；Optical distortion is larger, causes anamorphose big, image judgement.Therefore,
In view of the above-mentioned problems, it is necessary to propose further solution.
Summary of the invention
The present invention is intended to provide the automobile data recorder of a kind of optical lens and the application optical lens, to overcome the prior art
Present in deficiency.
In order to solve the above technical problems, the technical scheme is that：
A kind of optical lens comprising set gradually from object space to image space：Front lens group, diaphragm and rear lens
Group；
The front lens group includes setting gradually from object space to image space：First lens and the second lens, described first
Lens are the bent moon eyeglass for the negative power for being convex to object space or concave-concave, and second lens are the positive light coke eyeglass of biconvex；Institute
Diaphragm is stated to be located in the one side of second lens far from the object space；The rear lens group include from object space to image space successively
It is arranged：The third lens and the 4th lens, the cemented doublet of one positive light coke of the third lens and the 4th lens forming.
As the improvement of optical lens of the invention,
The front lens group meets following relationship：Before 10 >=F >=2, before 5.0 >=F/F >=1.0；
The rear lens group meets following relationship：After 20 >=F >=10, after 10.0 >=F/F >=2.0；
The front lens group and rear lens group meet following relationship：Before 5 >=F/F after >=0.1；
Wherein, the combined focal length value of front lens group is indicated before F, and the combined focal length value of rear lens group, F table are indicated after F
Show the whole group focal length value of the optical lens.
As the improvement of optical lens of the invention,
First lens meet following relationship：1.8 >=Nd >=1.6,65 >=Vd >=45；
Second lens meet following relationship：2.0 >=Nd >=1.8,45 >=Vd >=25；
The third lens meet following relationship：1.8 >=Nd >=1.6,45 >=Vd >=65；
4th lens meet following relationship：2.0 >=Nd >=1.8,15 >=Vd >=35；
Wherein, Nd indicates that the d optical index of first to fourth lens material, Vd indicate the d of first to fourth lens material
Light Abbe constant.
As the improvement of optical lens of the invention, the total field angle of the optical lens meets following relationship：190°≥
2w≥140°。
As the improvement of optical lens of the invention, the optical length of the optical lens meets following relationship：21≥
TTL≥10。
As the improvement of optical lens of the invention, the aperture F.NO meets following relationship：F.NO≤2.2.
As the improvement of optical lens of the invention, first to fourth lens are all made of bispherical glass mirror
Piece；And third, the 4th lens are double agglutination lens group.
As the improvement of optical lens of the invention, the focal power distribution of four sheet glass eyeglasses meets optical lens low temperature-
At 40 DEG C, 105 DEG C of high temperature ﹢, required within burnt shifting ± 0.005mm.
As the improvement of optical lens of the invention, the optical lens further includes：Optical filtering and protection glass, the filter
Light microscopic and protection glass are located at the rear lens group close to the side of image space.
In order to solve the above technical problems, the technical scheme is that：
A kind of automobile data recorder comprising：Shell and image sensor in the shell and as described above
Optical lens.
Compared with prior art, the beneficial effects of the invention are as follows：
First lens to the 4th lens, are all made of glass spheric glass in optical lens of the invention, have high temperature resistant, resistance to
High humidity, and Anti-scratching had not only met on-vehicle lens and have adapted to require to temperature change, but also improved on-vehicle lens and fit to adverse circumstances
Ying Xing.
The monitoring range of optical lens of the invention is big, and horizontal field of view angle >=120 °, pixel reaches 2,000,000, improves into
Image quality amount.
The optical distortion (order of magnitude)≤70% of optical lens of the invention, anamorphose is smaller.
The operating temperature range of optical lens of the invention is big, in 105 DEG C of temperature ranges of -40 DEG C~﹢, guarantees imaging
It can stablize.
4 bIade glass spherical structures of optical lens of the invention have structure simple, and production cost is low, are suitable for volume production
The advantages of.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in invention, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is optical lens floor map of the invention, wherein is object space on the left of Fig. 1, is image space on the right side of Fig. 1；
Fig. 2 is one embodiment of the invention MTF curve figure, and the synthesis resolving power for representing an optical system is horizontal, object
Away from infinity, wherein abscissa is spatial frequency, and unit millimeter, ordinate is contrast, and TSDiff.Limit representative is spread out
The attainable resolution ratio contrast of emitter-base bandgap grading limit institute, TS0.00 (deg) represent 0 ° of field of view angle T meridian direction S sagitta of arc direction institute energy
The resolution ratio contrast reached；
Fig. 3 is one embodiment of the invention field curvature, distortion curve figure, is indicated by the wavelength of common F, d, C three coloured light, field
Bent unit is mm, and the unit of distortion is %, and left graph in Fig. 3, abscissa is defocusing amount, and ordinate is normalization view
, right side graph figure, abscissa is distortion percentage, and ordinate is normalization visual field；
Fig. 4 is one embodiment of the invention light fan figure, and the abscissa of each curve graph represents each visual field X normalization hole in Fig. 4
Diameter Y normalizes aperture, and ordinate is chief ray bias；
Fig. 5 is one embodiment of the invention chromatic curve figure, is indicated by the wavelength of common F, d, C three coloured light, unit mm,
Wherein, abscissa represents defocusing amount, and ordinate represents normalization aperture；
Fig. 6 is defocusing curve figure of one embodiment of the invention temperature at -40 DEG C, by common F, d, C three coloured light
Wavelength expression, unit mm, wherein abscissa represents defocusing amount, and TS0.00 (deg) represents 0 ° of field of view angle T meridian direction S sagitta of arc
The attainable resolution ratio contrast of direction institute；
Fig. 7 is defocusing curve figure of one embodiment of the invention temperature at 105 DEG C of ﹢, by common F, d, C three coloured light
Wavelength expression, unit mm, wherein TS0.00 (deg) represents 0 ° of attainable point of field of view angle T meridian direction S sagitta of arc direction institute
Resolution contrast.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, it includes setting gradually from object space to image space that the present invention, which provides a kind of optical lens,：Front lens group
1, diaphragm (not shown) and rear lens group 2.
The front lens group 1 includes setting gradually from object space to image space：First lens 11 and the second lens 12.Its
In, first lens 11 are the bent moon eyeglass for being convex to the negative power of object space or concave-concave, and second lens 12 are biconvex
Positive light coke eyeglass.Preferably, first lens 11 are the bent moon eyeglass for being convex to object space, at this time the concave surface court of the first lens 11
To the convex surface of the 12 object space side of the second lens.
Further, the front lens group 1 is designed using following Optimal Parameters：The front lens group 1 meets following
Relationship：Before 10 >=F >=2, before 5.0 >=F/F >=1.0.Wherein, before F indicate front lens group 1 combined focal length value, F expression described in
The whole group focal length value of optical lens.
In the front lens group 1, first lens 11 meet following relationship：1.8 >=Nd >=1.6,65 >=Vd >=45.
Second lens 12 meet following relationship：2.0 >=Nd >=1.8,45 >=Vd >=25.Wherein, Nd indicates the d light folding of lens material
Rate is penetrated, Vd indicates the d light Abbe constant of lens material.
The diaphragm is located in the one side of the second lens 12 far from the object space.
The rear lens group 2 includes setting gradually from object space to image space：The third lens 13 and the 4th lens 14.Its
In, the cemented doublet of the third lens 13 and the 4th lens 14 one positive light coke of formation.At this point, 13 image space of the third lens
The convex surface of side is glued in the concave surface of the object space side of the 4th lens 14.
Further, the rear lens group 2 is designed using following Optimal Parameters：The rear lens group 2 meets following
Relationship：After 20 >=F >=10, after 10.0 >=F/F >=2.0.Wherein, the combined focal length value of rear lens group 2 is indicated after F, F indicates institute
State the whole group focal length value of optical lens.
In the rear lens group 2, the third lens 13 meet following relationship：1.8 >=Nd >=1.6,45 >=Vd >=65.
4th lens 14 meet following relationship：2.0 >=Nd >=1.8,15 >=Vd >=35.Wherein, Nd indicates the d light folding of lens material
Rate is penetrated, Vd indicates the d light Abbe constant of lens material.
In addition, the front lens group 1 and rear lens group 2 are also designed using following Optimal Parameters：The front lens group
Group 1 and rear lens group 2 meet following relationship：Before 5 >=F/F after >=0.1.Wherein, the group focus of front lens group 1 is indicated before F
Away from value, the combined focal length value of rear lens group 2 is indicated after F.
In one embodiment, first to fourth lens 14 are all made of bispherical glass lens；And third,
4th lens 14 are double agglutination lens group.At this point, the focal power distribution of four sheet glass eyeglasses meets -40 DEG C of optical lens low temperature,
At 105 DEG C of high temperature ﹢, required within burnt shifting ± 0.005mm.
To which 11 to the 4th lens 14 of the first lens are by using glass spheric glass, so that optical lens has resistance to height
Warm, resistance to high humidity, and Anti-scratching had not only met on-vehicle lens and have adapted to require to temperature change, but also improved on-vehicle lens to severe ring
The adaptability in border.In addition, 4 bIade glass spherical structures of optical lens of the invention, have structure simple, production cost is low,
The advantages of suitable for volume production.The operating temperature range of optical lens of the invention is big, in 105 DEG C of temperature ranges of -40 DEG C~﹢, protects
Imaging performance is demonstrate,proved to stablize.
The total field angle of optical lens of the invention meets following relationship：190 ° >=2w >=140 °, wherein 2w is optical frames
Total field angle of head.The optical length of the optical lens meets following relationship：21 >=TTL >=10, wherein TTL is optics
The optical length of camera lens.The aperture F.NO meets following relationship：F.NO≤2.2.
To which so that optical lens monitoring range is big, horizontal field of view angle >=120 °, pixel reaches 2,000,000, improves into
Image quality amount, and make the optical distortion (order of magnitude)≤70% of optical lens, anamorphose is smaller.
The optical lens further includes：Optical filtering 3 and protection glass 4, the optical filtering 3 and protection glass 4 are located at described
Rear lens group 2 is close to the side of image space.
Based on optical lens as described above, the present invention also provides a kind of automobile data recorders comprising：Shell and it is located at
Image sensor and optical lens as described above in the shell.
Below with reference to a specific embodiment, the technical effect of optical lens is verified, designed by the present embodiment
Parameter is as shown in the table：
| Face serial number | Radius of curvature r | Center thickness d | Refractive index Nd | Abbe constant Vd |
| a | 56.3 | 2.4 | 1.73 | 51 |
| b | 2.6 | 3.9 | ||
| c | 11.8 | 5.7 | 1.90 | 31 |
| d | -7.3 | 0.5 | ||
| e | 10.9 | 1.8 | 1.69 | 55 |
| f | -3.7 | 1.5 | 1.95 | 18 |
| g | -10.8 | 4.4 | ||
| h | infinity | 0.55 | ||
| i | infinity | 3.5 | ||
| j | infinity | 0.3 | ||
| k | infinity | 6 | ||
| IMA | infinity |
Table 1
As illustrated in figs. 2-7, for optical lens provided by the above embodiment, pass through MTF curve figure, the curvature of field-distortion curve
Figure, light fan figure, chromatic curve figure, -40 DEG C when defocusing curve figure, 105 DEG C of ﹢ when defocusing curve figure it is characterized.
To by Fig. 2-7 it is found that embodiment camera lens can satisfy the requirement of high-definition image clarity, and in-40 DEG C~﹢
In 105 DEG C of temperature ranges, guarantee that imaging performance is stablized.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of optical lens comprising set gradually from object space to image space：Front lens group, diaphragm and rear lens group
Group；It is characterized in that,
The front lens group includes setting gradually from object space to image space：First lens and the second lens, first lens
For be convex to object space or concave-concave negative power bent moon eyeglass, second lens be biconvex positive light coke eyeglass；The light
Door screen is located in the one side of second lens far from the object space；The rear lens group includes setting gradually from object space to image space
's：The third lens and the 4th lens, the cemented doublet of one positive light coke of the third lens and the 4th lens forming.
2. optical lens according to claim 1, which is characterized in that
The front lens group meets following relationship：Before 10 >=F >=2, before 5.0 >=F/F >=1.0；
The rear lens group meets following relationship：After 20 >=F >=10, after 10.0 >=F/F >=2.0；
The front lens group and rear lens group meet following relationship：Before 5 >=F/F after >=0.1；
Wherein, the combined focal length value of front lens group is indicated before F, the combined focal length value of rear lens group is indicated after F, and F indicates institute
State the whole group focal length value of optical lens.
3. optical lens according to claim 1, which is characterized in that
First lens meet following relationship：1.8 >=Nd >=1.6,65 >=Vd >=45；
Second lens meet following relationship：2.0 >=Nd >=1.8,45 >=Vd >=25；
The third lens meet following relationship：1.8 >=Nd >=1.6,45 >=Vd >=65；
4th lens meet following relationship：2.0 >=Nd >=1.8,15 >=Vd >=35；
Wherein, Nd indicates the d optical index of first to fourth lens material, Vd indicate first to fourth lens material d light Ah
Shellfish constant.
4. optical lens according to claim 1, which is characterized in that the total field angle of the optical lens meets following pass
System：190°≥2w≥140°.
5. optical lens according to claim 1, which is characterized in that the optical length of the optical lens meets following
Relationship：21≥TTL≥10.
6. optical lens according to claim 1, which is characterized in that the aperture F.NO meets following relationship：F.NO≤
2.2。
7. optical lens according to any one of claims 1 to 6, which is characterized in that first to fourth lens are equal
Using bispherical glass lens；And third, the 4th lens are double agglutination lens group.
8. optical lens according to claim 7, which is characterized in that the focal power distribution of four sheet glass eyeglasses meets optics
- 40 DEG C of camera lens low temperature at 105 DEG C of high temperature ﹢, requires within burnt shifting ± 0.005mm.
9. optical lens according to claim 1, which is characterized in that the optical lens further includes：Optical filtering and protection
Glass, the optical filtering and protection glass are located at the rear lens group close to the side of image space.
10. a kind of automobile data recorder, which is characterized in that the automobile data recorder includes：Shell and in the shell
Image sensor and such as described in any item optical lens of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811118350.2A CN108897123A (en) | 2018-09-21 | 2018-09-21 | Optical lens and automobile data recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811118350.2A CN108897123A (en) | 2018-09-21 | 2018-09-21 | Optical lens and automobile data recorder |
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| Publication Number | Publication Date |
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| CN108897123A true CN108897123A (en) | 2018-11-27 |
Family
ID=64360277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811118350.2A Pending CN108897123A (en) | 2018-09-21 | 2018-09-21 | Optical lens and automobile data recorder |
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| CN107765404A (en) * | 2016-08-15 | 2018-03-06 | 坦前科技股份有限公司 | Wide viewing angle imaging lens group |
| CN109791272A (en) * | 2016-10-19 | 2019-05-21 | 松下知识产权经营株式会社 | Taking lens system and camera |
| CN106842516A (en) * | 2016-12-28 | 2017-06-13 | 东莞市云泰光学有限公司 | A kind of wide-angle lens of monitoring |
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| CN206321871U (en) * | 2017-03-03 | 2017-07-11 | 东莞市宇光光电科技有限公司 | Inside peep and use imaging lens optical system |
| TWI620956B (en) * | 2017-10-19 | 2018-04-11 | 聲遠精密光學股份有限公司 | Wide angle imaging lens assembly |
| CN209014797U (en) * | 2018-09-21 | 2019-06-21 | 协益电子（苏州）有限公司 | Optical lens and automobile data recorder |
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