CN109116516A - Large aperture optical system and its camera module of application - Google Patents
Large aperture optical system and its camera module of application Download PDFInfo
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- CN109116516A CN109116516A CN201811139787.4A CN201811139787A CN109116516A CN 109116516 A CN109116516 A CN 109116516A CN 201811139787 A CN201811139787 A CN 201811139787A CN 109116516 A CN109116516 A CN 109116516A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 79
- 239000000463 material Substances 0.000 claims description 22
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000009738 saturating Methods 0.000 claims 1
- 230000000007 visual effect Effects 0.000 abstract description 9
- 238000003384 imaging method Methods 0.000 abstract description 7
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- 238000000034 method Methods 0.000 description 2
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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
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
-
- 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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Abstract
The embodiment of the invention discloses a kind of large aperture optical systems, successively include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens from object plane to image planes along optical axis；The image planes side of first lens is concave surface, and focal power is negative；The object plane side of second lens is convex surface, and image planes side is concave surface, and focal power is negative；The object plane side of the third lens is convex surface, and image planes side is concave surface, and focal power is positive；The object plane side of 4th lens is convex surface, and image planes side is convex surface, and focal power is positive；The object plane side of 5th lens is concave surface, and image planes side is convex surface, and focal power is negative；The object plane side of 6th lens is convex surface, and focal power is positive.On the other hand, the embodiment of the invention also provides a kind of camera modules.The optical system and camera module of the embodiment of the present invention are mainly made of 6 pieces of lens, and lens piece number is few, and structure is simple；Using the intercombination of different lens and reasonable distribution focal power, there are the superperformances such as large aperture, big visual angle, high pixel, be suitable for vehicle-mounted imaging field.
Description
Technical field:
The present invention relates to a kind of optical system and its camera module of application, especially a kind of large aperture optical system and its
The camera module of application.
Background technique:
Existing optical system or camera module applied to vehicle-mounted imaging field, generally existing number of lenses is more, and structure is multiple
Miscellaneous problem.
Summary of the invention:
To overcome existing optical system or camera module applied to vehicle-mounted imaging field, generally existing number of lenses is more,
The problem of structure is complicated, the embodiment of the invention provides a kind of large aperture optical systems.
A kind of large aperture optical system successively includes: the first lens, the second lens, third from object plane to image planes along optical axis
Lens, the 4th lens, the 5th lens and the 6th lens；
The image planes side of first lens is concave surface, and focal power is negative；
The object plane side of second lens is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of the third lens is convex surface, and image planes side is concave surface, and focal power is positive；
The object plane side of 4th lens is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 5th lens is concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 6th lens is convex surface, and focal power is positive.
On the other hand, the embodiment of the invention also provides a kind of camera modules.
A kind of camera module includes at least optical lens, is equipped with large aperture optical system described above in optical lens
System.
The optical system and camera module of the embodiment of the present invention are mainly made of 6 pieces of lens, and lens piece number is few, structure letter
It is single；It is combined with each other using different lens and reasonable distribution focal power is fitted with superperformances such as large aperture, big visual angle, high pixels
For vehicle-mounted imaging field.
Detailed description of the invention:
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the optical system of the first embodiment of the present invention or the structural schematic diagram of camera module；
Fig. 2 is the distortion curve at 25 DEG C of optical system or camera module of the invention；
Fig. 3 is the MTF curve figure at 25 DEG C of optical system or camera module of the invention；
Fig. 4 is the relative illumination figure at 25 DEG C of optical system or camera module of the invention；
Fig. 5 is the MTF curve figure at -40 DEG C of optical system or camera module of the invention；
Fig. 6 is the MTF curve figure at 105 DEG C of optical system or camera module of the invention；
Fig. 7 is the optical system of the second embodiment of the present invention or the structural schematic diagram of camera module；
Fig. 8 is the optical system of the third embodiment of the present invention or the structural schematic diagram of camera module；
Fig. 9 is the optical system of the fourth embodiment of the present invention or the structural schematic diagram of camera module.
Specific embodiment:
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
When the embodiment of the present invention refers to the ordinal numbers such as " first ", " second ", unless based on context its express really it is suitable
The meaning of sequence, it should be understood that only play differentiation and be used.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Embodiment one: the embodiment of the invention provides a kind of large aperture optical system, along optical axis from object plane to image planes 8 successively
It include: the first lens 1, the second lens 2, the third lens 3, the 4th lens 4, the 5th lens 5 and the 6th lens 6.Such as Fig. 1 institute
Show:
The object plane side of first lens 1 is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of second lens 2 is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of the third lens 3 is convex surface, and image planes side is concave surface, and focal power is positive；
The object plane side of 4th lens 4 is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 5th lens 5 is concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 6th lens 6 is convex surface, and image planes side is concave surface, and focal power is positive.
The optical system of the embodiment of the present invention is mainly made of 6 pieces of lens, and lens piece number is few, and structure is simple；Using difference
Lens are combined with each other and reasonable distribution focal power, have the superperformances such as large aperture, big visual angle, high pixel, be suitable for it is vehicle-mounted at
As field.
Further, non-limiting, the 4th lens 4 and the mutual glue of the 5th lens 5 as the preferred embodiment of this programme
Conjunction forms compound lens.Structure is simple, it is ensured that good optical property.
Still further, non-limiting as the preferred embodiment of this programme, the focal length f45 of compound lens meets: 5 <
f45<50.Structure is simple, it is ensured that good optical property.
Further, non-limiting as the preferred embodiment of this programme, each lens of optical system meet as follows
Condition:
(1) -25<f1<-5；
(2) -25<f2<-5；
(3) 5<f3<25；
(4) 2<f4<10；
(5) -25<f5<-5；
(6) 5<f6<50；
Wherein, f is the focal length of entire optical system, and 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, f4 are the focal length of the 4th lens, and f5 is the focal length of the 5th lens, and f6 is the focal length of the 6th lens.Using
Different lens are combined with each other and reasonable distribution focal power, have the favorable optical performances such as large aperture, big visual angle, high pixel.
Further, non-limiting as the preferred embodiment of this programme, the Refractive Index of Material Nd1 of the first lens 1,
Material Abbe constant Vd1 meets: 1.70 < Nd1 < 1.95,30 < Vd1 < 60；The focal length f1 of first lens meets: -5 < f1/f < -
1.2, f be the focal length of entire optical system.Structure is simple, it is ensured that good optical property.
Still further, as the preferred embodiment of this programme and it is non-limiting, the Refractive Index of Material Nd2 of the second lens 2,
Material Abbe constant Vd2 meets: 1.50 < Nd2 < 1.70,40 < Vd2 < 60；The focal length f2 of second lens meets: -5 < f2/f < -
1.8, f be the focal length of entire optical system.Structure is simple, it is ensured that good optical property.
Further, non-limiting as the preferred embodiment of this programme, the Refractive Index of Material Nd3 of the third lens 3,
Material Abbe constant Vd3 meets: 1.50 < Nd3 < 1.70,20 < Vd3 < 40；The focal length f3 of the third lens meets: 1.5 < f3/f < 5, f
For the focal length of entire optical system.Structure is simple, it is ensured that good optical property.
Further, non-limiting as the preferred embodiment of this programme, the Refractive Index of Material Nd4 of the 4th lens 4,
Material Abbe constant Vd4 meets: 1.70 < Nd4 < 1.88,20 < Vd4 < 55；The focal length f4 of 4th lens meets: 0.5 < f4/f <
2.5, f be the focal length of entire optical system.Structure is simple, it is ensured that good optical property.
Still further, as the preferred embodiment of this programme and it is non-limiting, the Refractive Index of Material Nd5 of the 5th lens 5,
Material Abbe constant Vd5 meets: 1.80 < Nd5 < 2.05,15 < Vd5 < 35；The focal length f5 of the third lens meets: -5 < f5/f < -
1.5, f be the focal length of entire optical system.Structure is simple, it is ensured that good optical property.
Further, non-limiting as the preferred embodiment of this programme, the Refractive Index of Material Nd6 of the 6th lens 6,
Material Abbe constant Vd6 meets: 1.45 < Nd6 < 1.65,45 < Vd6 < 65；The focal length f6 of 6th lens meets: 2 < f6/f < 10, f
For the focal length of entire optical system.Structure is simple, it is ensured that good optical property.
Further, non-limiting as the preferred embodiment of this programme, the diaphragm STO of optical system setting is the
Between three lens 3 and the 4th lens 4.Structure is simple, for adjusting the intensity of light beam.
Still further, as the preferred embodiment of this programme and it is non-limiting, be equipped between the 6th lens 6 and image planes 8
Bandpass filter may filter that the infrared light in environment, generate red aeration phenomenon to avoid image.
Further, non-limiting as the preferred embodiment of this programme, the second lens 2, the third lens 3 and
6th lens 6 are plastic aspheric lens.The structure combined using glass spherical surface with plastic aspherical element, can be effectively real
Existing aplanasia and low cost production.
Specifically, in conjunction with Fig. 1, in the present embodiment, the focal length f1=-10.173 of first lens 1 of this optical system, the
The focal length f2=-12.925 of two lens 2, focal length f3=12.310, the focal length f4=5.022 of the 4th lens 4 of the third lens 3,
The focal length f5=-11.860 of 5th lens 5, the focal length f6=25.289 of the 6th lens 6.In the present embodiment, optical system it is each
Item basic parameter is as shown in the table:
| Surface | Radius of curvature R (mm) | Thickness D (mm) | Refractive index Nd | Dispersion values Vd |
| S1 | -100.00 | 1.00 | 1.80 | 46.5 |
| S2 | 9.00 | 1.00 | ||
| S3 | 5.00 | 2.00 | 1.53 | 56.0 |
| S4 | 2.50 | 2.00 | ||
| S5 | 6.50 | 5.00 | 1.63 | 23.3 |
| S6 | 25.00 | 0.50 | ||
| S7 | INFINITY | 0.00 | ||
| S8 | 15.00 | 5.50 | 1.84 | 23.7 |
| S9 | -5.00 | 1.00 | 1.92 | 20.8 |
| S10 | -10.00 | 2.50 | ||
| S11 | 10.00 | 6.00 | 1.53 | 56.0 |
| S12 | 30.00 | 0.50 | ||
| S13 | INFINITY | 0.30 | 1.516 | 64.19 |
| S14 | INFINITY | 0.10 | ||
| S15 | INFINITY | 0.00 |
In upper table, along optical axis 8 from object plane to image planes, S1, S2 correspond to two surfaces of the first lens 1；S3, S4 are corresponded to
Two surfaces of the second lens 2；S5, S6 correspond to two surfaces of the third lens 3；S7 is diaphragm STO；S8, S9 correspond to
Two surfaces of four lens 4；S9, S10 correspond to two surfaces of the 5th lens 5；S11, S12 correspond to the two of the 6th lens 6
A surface；Two surfaces of the bandpass filter of S13, S14 between the 6th lens 6 and image planes 8；S15 is image planes 8.
More specifically, the second lens 2, the third lens 3 and the 6th lens 6 are aspherical shape, meet with lower section
Formula:
Wherein, parameter c=1/R, as curvature corresponding to radius, y are radial coordinate, and unit is identical with length of lens unit, and k is
Circular cone whose conic coefficient, a1To a8Coefficient corresponding to respectively each radial coordinate.The surface S3 of second lens 2 and S4
The aspherical dependency number on the surface S11 and the surface S12 on surface, the surface S5 of the third lens 3 and the surface S6 and the 6th lens 6
Value is as shown in the table:
| K | A1 | A2 | A3 | A4 | |
| S3 | -5.00 | 0 | 0.000104675587016000 | -0.000619856528579800 | 0.000038789316717930 |
| S4 | -1.00 | 0 | -0.008353201293963001 | -0.000892341700357900 | 0.000098029733555950 |
| S5 | -8.00 | 0 | 0.005403373934680000 | -0.000368060969336000 | 0.000019444907418860 |
| S6 | 25.00 | 0 | 0.001174256854702000 | 0.000058730034874830 | -0.000007170785765268 |
| S11 | -7.00 | 0 | 0.000827838098924300 | 0.000001583606768428 | -0.000000443055784154 |
| S12 | -150.00 | 0 | -0.000843831194318700 | 0.000058400788009880 | -0.000001715009883989 |
In from Fig. 2 to Fig. 6 as can be seen that the present embodiment in optical system have large aperture, big visual angle, high pixel, with
And the superperformances such as extraordinary athermal.
A kind of camera module includes at least optical lens, is equipped with large aperture optical system described above in optical lens
System.
The camera module of the embodiment of the present invention is mainly made of 6 pieces of lens, and lens piece number is few, and structure is simple；Using difference
Lens are combined with each other and reasonable distribution focal power, have the superperformances such as large aperture, big visual angle, high pixel, be suitable for it is vehicle-mounted at
As field.
Embodiment two: as shown in fig. 7, large aperture optical system provided in an embodiment of the present invention or camera module, with reality
Apply example one the difference is that,
The object plane side of first lens 1 is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of second lens 2 is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of the third lens 3 is convex surface, and image planes side is concave surface, and focal power is positive；
The object plane side of 4th lens 4 is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 5th lens 5 is concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 6th lens 6 is convex surface, and image planes side is convex surface, and focal power is positive.
The optical system and camera module of the embodiment of the present invention are mainly made of 6 pieces of lens, and lens piece number is few, structure letter
It is single；It is combined with each other using different lens and reasonable distribution focal power is fitted with superperformances such as large aperture, big visual angle, high pixels
For vehicle-mounted imaging field.
Embodiment three: as shown in figure 8, large aperture optical system provided in an embodiment of the present invention or camera module, with reality
Apply example one the difference is that,
The object plane side of first lens 1 is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of second lens 2 is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of the third lens 3 is convex surface, and image planes side is concave surface, and focal power is positive；
The object plane side of 4th lens 4 is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 5th lens 5 is concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 6th lens 6 is convex surface, and image planes side is concave surface, and focal power is positive.
The optical system and camera module of the embodiment of the present invention are mainly made of 6 pieces of lens, and lens piece number is few, structure letter
It is single；It is combined with each other using different lens and reasonable distribution focal power is fitted with superperformances such as large aperture, big visual angle, high pixels
For vehicle-mounted imaging field.
Example IV: as shown in figure 9, large aperture optical system provided in an embodiment of the present invention or camera module, with reality
Apply example one the difference is that,
The object plane side of first lens 1 is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of second lens 2 is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of the third lens 3 is convex surface, and image planes side is concave surface, and focal power is positive；
The object plane side of 4th lens 4 is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 5th lens 5 is concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 6th lens 6 is convex surface, and image planes side is convex surface, and focal power is positive.
The optical system and camera module of the embodiment of the present invention are mainly made of 6 pieces of lens, and lens piece number is few, structure letter
It is single；It is combined with each other using different lens and reasonable distribution focal power is fitted with superperformances such as large aperture, big visual angle, high pixels
For vehicle-mounted imaging field.
It is the one or more embodiments provided in conjunction with particular content as described above, does not assert specific reality of the invention
It applies and is only limited to these instructions.It is all approximate with method of the invention, structure etc., identical, or for present inventive concept under the premise of
Several technology deduction or replace are made, all should be considered as protection scope of the present invention.
Claims (10)
- It successively include: that the first lens, the second lens, third are saturating from object plane to image planes along optical axis 1. a kind of large aperture optical system Mirror, the 4th lens, the 5th lens and the 6th lens；It is characterized in that,The image planes side of first lens is concave surface, and focal power is negative；The object plane side of second lens is convex surface, and image planes side is concave surface, and focal power is negative；The object plane side of the third lens is convex surface, and image planes side is concave surface, and focal power is positive；The object plane side of 4th lens is convex surface, and image planes side is convex surface, and focal power is positive；The object plane side of 5th lens is concave surface, and image planes side is convex surface, and focal power is negative；The object plane side of 6th lens is convex surface, and focal power is positive.
- 2. large aperture optical system as described in claim 1, which is characterized in that the 4th lens and the mutually glued shape of the 5th lens At compound lens.
- 3. large aperture optical system as claimed in claim 2, which is characterized in that the focal length f45 of compound lens meets: 5 < f45 < 50。
- 4. large aperture optical system as described in claim 1, which is characterized in that each lens of optical system meet following item Part:(1)-25<f1<-5；(2)-25<f2<-5；(3)5<f3<25；(4)2<f4<10；(5)-25<f5<-5；(6)5<f6<50；Wherein, f is the focal length of entire optical system, and f1 is the focal length of the first lens, and f2 is the focal length of the second lens, and f3 is third The focal length of lens, f4 are the focal length of the 4th lens, and f5 is the focal length of the 5th lens, and f6 is the focal length of the 6th lens.
- 5. large aperture optical system as described in claim 1, which is characterized in that Refractive Index of Material Nd1, the material of the first lens Abbe constant Vd1 meets: 1.70 < Nd1 < 1.95,30 < Vd1 < 60；The focal length f1 of first lens meets: -5 < f1/f < -1.2, f is The focal length of entire optical system.
- 6. large aperture optical system as described in claim 1, which is characterized in that Refractive Index of Material Nd2, the material of the second lens Abbe constant Vd2 meets: 1.50 < Nd2 < 1.70,40 < Vd2 < 60；The focal length f2 of second lens meets: -5 < f2/f < -1.8, f is The focal length of entire optical system.
- 7. large aperture optical system as described in claim 1, which is characterized in that Refractive Index of Material Nd3, the material of the third lens Abbe constant Vd3 meets: 1.50 < Nd3 < 1.70,20 < Vd3 < 40；The focal length f3 of the third lens meets: 1.5 < f3/f < 5, f are whole The focal length of a optical system.
- 8. large aperture optical system as described in claim 1, which is characterized in that Refractive Index of Material Nd4, the material of the 4th lens Abbe constant Vd4 meets: 1.70 < Nd4 < 1.88,20 < Vd4 < 55；The focal length f4 of 4th lens meets: 0.5 < f4/f < 2.5, f are The focal length of entire optical system.
- 9. large aperture optical system as described in claim 1, which is characterized in that Refractive Index of Material Nd5, the material of the 5th lens Abbe constant Vd5 meets: 1.80 < Nd5 < 2.05,15 < Vd5 < 35；The focal length f5 of the third lens meets: -5 < f5/f < -1.5, f is The focal length of entire optical system.
- 10. a kind of camera module includes at least optical lens, which is characterized in that be equipped with claim 1-9 in optical lens and appoint Large aperture optical system described in one.
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| CN109683285A (en) * | 2019-01-23 | 2019-04-26 | 广东弘景光电科技股份有限公司 | Large aperture takes the photograph the camera module of remote optical system and its application |
| CN109975954A (en) * | 2019-04-04 | 2019-07-05 | 广东弘景光电科技股份有限公司 | High pixel road monitoring optical system and its camera module of application |
| CN110109233A (en) * | 2019-05-28 | 2019-08-09 | 广东弘景光电科技股份有限公司 | Large aperture optical system and its camera module of application |
| CN115453723A (en) * | 2022-09-06 | 2022-12-09 | 曼德电子电器有限公司 | Panoramic large-aperture lens and panoramic camera system |
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