CN209400776U - High pixel large aperture Depth Imaging optical system and its camera module of application - Google Patents
High pixel large aperture Depth Imaging optical system and its camera module of application Download PDFInfo
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- CN209400776U CN209400776U CN201822089688.1U CN201822089688U CN209400776U CN 209400776 U CN209400776 U CN 209400776U CN 201822089688 U CN201822089688 U CN 201822089688U CN 209400776 U CN209400776 U CN 209400776U
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Abstract
The utility model embodiment discloses a kind of high pixel large aperture Depth Imaging optical system, successively includes: the first lens, the second lens, the third lens, the 4th lens and the 5th lens from object plane to image planes along optical axis；The object plane side of first lens is convex surface, and image planes side is concave surface, and focal power is negative；The object plane side of second lens is convex surface, and image planes side is convex surface, and focal power is positive；The object plane side of the third lens is concave surface, and image planes side is convex surface, and focal power is negative；The object plane side of 4th lens is convex surface, and image planes side is concave surface, and focal power is positive；The object plane side of 5th lens is convex surface, and image planes side is convex surface, and focal power is positive.On the other hand, the utility model embodiment additionally provides a kind of camera module.The optical system and camera module of the utility model embodiment are mainly made of 5 pieces of lens, and lens piece number is few, and structure is simple, and cost is relatively low；With large aperture, high pixel, small size, without superperformances such as thermalizations, be suitable for industry and 3D Depth Imaging field.
Description
Technical field:
The utility model relates to a kind of optical system and its camera module of application, especially a kind of high pixel large aperture is deep
Spend the camera module of imaging optical system and its application.
Background technique:
The existing optical system or camera module for being applied to industry and 3D Depth Imaging field, generally existing number of lenses
It is more, the problem of structure is complicated.
Summary of the invention:
To overcome the existing optical system or camera module for being applied to industry and 3D Depth Imaging field, generally existing eyeglass
The problem of quantity is more, and structure is complicated, the utility model embodiment provide a kind of high pixel large aperture Depth Imaging optical system.
A kind of high pixel large aperture Depth Imaging optical system, along optical axis successively include: from object plane to image planes the first lens,
Second lens, the third lens, the 4th lens and the 5th lens；
The object plane side of first lens is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of second lens is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of the third lens is concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 4th lens is convex surface, and image planes side is concave surface, and focal power is positive；
The object plane side of 5th lens is convex surface, and image planes side is convex surface, and focal power is positive.
On the other hand, the utility model embodiment additionally provides a kind of camera module.
A kind of camera module includes at least optical lens, is equipped with high pixel large aperture described above in optical lens
Depth Imaging optical system.
The optical system and camera module of the utility model embodiment are mainly made of 5 pieces of lens, and lens piece number is few, knot
Structure is simple, and cost is relatively low；Using the intercombination of different lens and reasonable distribution focal power, there is large aperture, high pixel, corpusculum
It accumulates, without superperformances such as thermalizations, is suitable for industry and 3D Depth Imaging field.
Detailed description of the invention:
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the optical system of the utility model embodiment or the structural schematic diagram of camera module；
Fig. 2 is the optical system of the utility model embodiment or the field curvature, distortion curve figure of camera module；
Fig. 3 is the MTF transmitting of the optical system or camera module of the utility model embodiment under the conditions of 940nm ,+25 DEG C
Function curve diagram；
Fig. 4 is the MTF transmitting of the optical system or camera module of the utility model embodiment under the conditions of 940nm, -40 DEG C
Function curve diagram；
Fig. 5 is that the MTF of the optical system or camera module of the utility model embodiment under the conditions of 940nm ,+105 DEG C is passed
Delivery function curve graph.
Specific embodiment:
The technical issues of in order to keep the utility model solved, technical solution and beneficial effect are more clearly understood, below
In conjunction with accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific implementation described herein
Example is only used to explain the utility model, is not used to limit the utility model.
When the utility model embodiment refers to the ordinal numbers such as " first ", " second ", unless based on context its certain table
Up to 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 " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
The utility model embodiment provides a kind of high pixel large aperture Depth Imaging optical system, along optical axis from object plane to
Image planes 7 successively include: the first lens 1, the second lens 2, the third lens 3, the 4th lens 4 and the 5th lens 5.
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 convex surface, and focal power is positive；
The object plane side of the third lens 3 is concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 4th lens 4 is convex surface, and image planes side is concave surface, and focal power is positive；
The object plane side of 5th lens 5 is convex surface, and image planes side is convex surface, and focal power is positive.
The optical system of the utility model embodiment is mainly made of 5 pieces of lens, and lens piece number is few, and structure is simple, cost
It is lower；It is combined with each other using different lens and reasonable distribution focal power, there is large aperture, high pixel, small size, good without thermalization etc.
Good performance is suitable for industry and 3D Depth Imaging field.
Further, non-limiting as the preferred embodiment of this programme, each lens of optical system meet following item
Part:
(1)-0.38<f/f1<-0.91；
(2)0.32<f/f2<1.0；
(3)-0.21<f/f3<-0.67；
(4)4.50<f/f4<6.32；
(5)0.130<f/f5<0.370；
Wherein, f is the focal length of entire optical system, and f1 is the focal length of the first lens 1, and f2 is the focal length of the second lens 2, f3
For the focal length of the third lens 3, f4 is the focal length of the 4th lens 4, and f5 is the focal length of the 5th lens 5.Using different lens mutually group
Close and reasonable distribution focal power, have large aperture, high pixel, small size, without superperformances such as thermalizations.
Still further, as the preferred embodiment of this programme and it is non-limiting, the Refractive Index of Material Nd1 of the first lens 1,
Material Abbe constant Vd1 meets: 1.75 < Nd1 <, 1.80,43 < Vd1 < 55；The focal length f1 of first lens 1 meets: -0.38 <
F/f1 < -0.91, f is the focal length of entire optical system.Act the effects of expanding visual angle, the balance curvature of field and improving distortion；When eyeglass is rolled over
When penetrating rate Nd and selecting higher, the distortion of optical system can be smaller, and optical system volume also can accordingly reduce, improving optical system
Use value.
Further, non-limiting as the preferred embodiment of this programme, the Refractive Index of Material Nd2 of the second lens 2,
Material Abbe constant Vd2 meets: Nd2 > 1.90, Vd2 < 36；The focal length f2 of second lens meets: 0.32 < f/f2 < 1.0, f are
The focal length of entire optical system.Aberration is further balanced, optical system parsing power is improved and reduces distortion.
Further, non-limiting as the preferred embodiment of this programme, the third lens 3 are that plastic cement is aspherical
Mirror, Refractive Index of Material Nd3, material Abbe constant Vd3 meet: 1.49 < Nd3 <, 1.55,50 < Vd3 < 58；The third lens
Focal length f3 meets: -0.21 < f/f3 < -0.67, f is the focal length of entire optical system.Further balance system aberration, promotes parsing
Power.
Still further, non-limiting as the preferred embodiment of this programme, the 4th lens 4 are that plastic cement is aspherical
Mirror, Refractive Index of Material Nd4, material Abbe constant Vd4 meet: 1.49 < Nd4 <, 1.55,50 < Vd4 < 58；4th lens
Focal length f4 meets: 4.50 < f/f4 < 6.32, f are the focal length of entire optical system.Further balance system aberration, promotes parsing
Power；It is positive and negative complementary with the focal power of the third lens, and system is made to have good temperature characterisitic.
Further, non-limiting as the preferred embodiment of this programme, the 5th lens 5 are that plastic cement is aspherical
Mirror, Refractive Index of Material Nd5, material Abbe constant Vd5 meet: Nd5 > 1.63, Vd5 < 24；The focal length f5 of 5th lens is full
Foot: 0.13 < f/f5 < 0.37, f are the focal length of entire optical system.Play a part of to receive light and reduce chief ray angle, further puts down
Weigh temperature characterisitic.
Further, non-limiting as the preferred embodiment of this programme, the aperture diaphragm of optical system is located at the
Between one lens and the second lens, close to the second lens side.Structure is simple, for adjusting the intensity of light beam.
Specifically, in conjunction with Fig. 1, in the present embodiment, this optical system matches 1/3 " 3D chip sensor, focal length f=
3.32mm, stop index F/NO=1.2, HFOV=80 ° of horizontal direction field angle, optics overall length TTL=13.72mm.This implementation
In example, every basic parameter of optical system is as shown in the table:
In upper table, along optical axis 7 from object plane to image planes, S1, S2 correspond to two surfaces of the first lens 1；S3 is diaphragm
STO；S4, S5 correspond to two surfaces of the second lens 2；S6, S7 correspond to two surfaces of the third lens 3；S8, S9 are corresponded to
Two surfaces of the 4th lens 4；S10, S11 correspond to two surfaces of the 5th lens 5；IMA is image planes 7.
More specifically, the third lens 3, the 4th lens 4 and the 5th lens 5 are aspherical shape, meet with lower section
Formula:
Wherein, parameter c=1/R, as curvature corresponding to radius, y are radial coordinate, unit and length of lens unit phase
Together, k is circular cone whose conic coefficient, a1To a8Coefficient corresponding to respectively each radial coordinate.The S6 table of the third lens 3
The surface S10 and the surface S11 on face and the surface S7, the surface S8 of the 4th lens 4 and the surface S9 and the 5th lens 5 it is aspherical
Correlation values are as shown in the table:
| K | α2 | α3 | α4 | α5 | α6 | |
| S6 | -3.611 | -6.300E-03 | 1.800E-03 | -8.000E-05 | -1.700E-06 | 1.300E-07 |
| S7 | -3.570 | -5.000E-03 | 1.700E-03 | -1.100E-04 | 7.900E-06 | -1.700E-07 |
| S8 | -7.192 | 5.800E-03 | -1.300E-03 | 1.500E-04 | -1.400E-05 | 2.600E-07 |
| S9 | -3.241 | -1.000E-02 | -7.000E-04 | 9.200E-05 | -2.400E-06 | -7.200E-08 |
| S10 | 50.582 | 7.000E-03 | -2.200E-03 | -2.300E-04 | 4.700E-05 | -1.800E-06 |
| S11 | -120.97 | 7.000E-03 | 7.400E-04 | -5.700E-04 | 6.600E-05 | -2.400E-06 |
As can be seen that the optical system in the present embodiment has large aperture, high pixel, small size, nothing in from Fig. 2 to Fig. 5
The superperformances such as thermalization are suitable for industry and 3D Depth Imaging field.
A kind of camera module includes at least optical lens, is equipped with high pixel large aperture described above in optical lens
Depth Imaging optical system.
The camera module of the utility model embodiment is mainly made of 5 pieces of lens, and lens piece number is few, and structure is simple, cost
It is lower；It is combined with each other using different lens and reasonable distribution focal power, there is large aperture, high pixel, small size, good without thermalization etc.
Good performance is suitable for industry and 3D Depth Imaging field.
It is the one or more embodiments provided in conjunction with particular content as described above, does not assert the tool of the utility model
Body implementation is only limited to these instructions.It is all approximate with the method for the utility model, structure etc., identical or practical new for this
Several technology deduction or replace are made under type concept thereof, all should be considered as the protection scope of the utility model.
Claims (10)
1. a kind of high pixel large aperture Depth Imaging optical system successively includes: the first lens, from object plane to image planes along optical axis
Two lens, the third lens, the 4th lens and the 5th lens；It is characterized in that,
The object plane side of first lens is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of second lens is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of the third lens is concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 4th lens is convex surface, and image planes side is concave surface, and focal power is positive；
The object plane side of 5th lens is convex surface, and image planes side is convex surface, and focal power is positive.
2. high pixel large aperture Depth Imaging optical system as described in claim 1, which is characterized in that optical system it is each
Mirror meets following condition:
(1)-0.38<f/f1<-0.91；
(2)0.32<f/f2<1.0；
(3)-0.21<f/f3<-0.67；
(4)4.50<f/f4<6.32；
(5)0.130<f/f5<0.370；
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.
3. high pixel large aperture Depth Imaging optical system as described in claim 1, which is characterized in that the material of the first lens
Refractive index Nd1, material Abbe constant Vd1 meet: 1.75 < Nd1 <, 1.80,43 < Vd1 < 55；The focal length f1 of first lens is full
Foot: -0.38 < f/f1 < -0.91, f is the focal length of entire optical system.
4. high pixel large aperture Depth Imaging optical system as described in claim 1, which is characterized in that the material of the second lens
Refractive index Nd2, material Abbe constant Vd2 meet: Nd2 > 1.90, Vd2 < 36；The focal length f2 of second lens meets: 0.32 < f/
F2 < 1.0, f are the focal length of entire optical system.
5. high pixel large aperture Depth Imaging optical system as described in claim 1, which is characterized in that the material of the third lens
Refractive index Nd3, material Abbe constant Vd3 meet: 1.49 < Nd3 <, 1.55,50 < Vd3 < 58；The focal length f3 of the third lens is full
Foot: -0.21 < f/f3 < -0.67, f is the focal length of entire optical system.
6. high pixel large aperture Depth Imaging optical system as described in claim 1, which is characterized in that the material of the 4th lens
Refractive index Nd4, material Abbe constant Vd4 meet: 1.49 < Nd4 <, 1.55,50 < Vd4 < 58；The focal length f4 of 4th lens is full
Foot: 4.50 < f/f4 < 6.32, f are the focal length of entire optical system.
7. high pixel large aperture Depth Imaging optical system as described in claim 1, which is characterized in that the material of the 5th lens
Refractive index Nd5, material Abbe constant Vd5 meet: Nd5 > 1.63, Vd5 < 24；The focal length f5 of 5th lens meets: 0.13 < f/
F5 < 0.37, f are the focal length of entire optical system.
8. high pixel large aperture Depth Imaging optical system as described in claim 1, which is characterized in that the aperture of optical system
Diaphragm is between the first lens and the second lens, close to the second lens side.
9. high pixel large aperture Depth Imaging optical system as described in claim 1, which is characterized in that the third lens, the 4th
Lens and the 5th lens are plastic aspheric lenes.
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
High pixel large aperture Depth Imaging optical system described in one.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109507784A (en) * | 2018-12-12 | 2019-03-22 | 广东弘景光电科技股份有限公司 | High pixel large aperture Depth Imaging optical system and its camera module of application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109507784A (en) * | 2018-12-12 | 2019-03-22 | 广东弘景光电科技股份有限公司 | High pixel large aperture Depth Imaging optical system and its camera module of application |
| CN109507784B (en) * | 2018-12-12 | 2023-10-27 | 广东弘景光电科技股份有限公司 | High-pixel large-aperture-depth imaging optical system and camera module applying same |
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