CN107479170A - The chip camera lens of wide-angle six - Google Patents
The chip camera lens of wide-angle six Download PDFInfo
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- CN107479170A CN107479170A CN201610405227.3A CN201610405227A CN107479170A CN 107479170 A CN107479170 A CN 107479170A CN 201610405227 A CN201610405227 A CN 201610405227A CN 107479170 A CN107479170 A CN 107479170A
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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
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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
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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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
- G02B13/18—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
A kind of chip camera lens of wide-angle six, it is sequentially first eyeglass with negative refractive power by thing side to image side, one has the second eyeglass of positive refractive power, one aperture, one has the 3rd eyeglass of positive refractive power, one has the 4th eyeglass of positive refractive power, one the 5th eyeglass and the 6th eyeglass with positive refractive power with negative refractive power, the image side surface of first eyeglass is concave surface, the thing side of second eyeglass is convex surface, the image side surface of 3rd eyeglass is convex surface, the thing side of 4th eyeglass and image side surface are convex surface, the thing side of 5th eyeglass is concave surface, the thing side of 6th eyeglass is convex surface, and overall effective focal length is f, the focal length of 3rd eyeglass is f3, and meet relational expression：0.29<f/f3<0.36.Whereby, wide angle system can be formed and eliminate aberration.
Description
Technical field
The present invention relates to a kind of wide-angle lens, particularly a kind of chip camera lens of wide-angle six.
Background technology
With the development of science and technology the electronic product of portable such as smart mobile phone, flat board, or monitoring or vehicle-mounted
Device etc. all develops towards light, thin, short, small direction, and with the increase in demand of people, all can be in
Camera lens is installed on the electronic product of portable, so that user takes pictures or makes video recording, and the camera lens being configured thereon that
There would generally be the characteristic of wide-angle, consequently, it is possible to the effect of close shot shooting can just be improved, such as self-timer or text
Part shooting etc., to increase the desire of people's purchase.
" wide-angle lens " of wide-angle lens such as TaiWan, China patent announcement I 499795, from thing side to picture
Side sequentially includes：It is one first lens, one second lens, one the 3rd lens, one the 4th lens, one the 5th saturating
Mirror and one the 6th lens, first lens have negative refractive power and including a convex surfaces, should be convex surface facing the thing
Side, second lens include a convex surface, should be convex surface facing the thing side, and the 3rd lens are biconvex lens, should
4th lens are biconvex lens, and the 5th lens are biconcave lens, and the 6th lens are biconvex lens, wherein
4th lens and the 5th lens glue synthesize a balsaming lens.Whereby, it possess have large viewing,
The advantages that miniaturization, high-res.
However, wide-angle lens, when visual angle is larger, its aberration will be difficult to correct, therefore, how to reach
While wide-angle, aberration, to improve image quality, the problem of actually related dealer is to be solved are reduced.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of chip camera lens of wide-angle six, to solve wide-angle lens
Aberration it is larger the problem of.
To achieve these goals, the invention provides a kind of chip camera lens of wide-angle six, by thing side to image side according to
Sequence is one first eyeglass, one second eyeglass, an aperture, one the 3rd eyeglass, one the 4th eyeglass, one the 5th mirror
Piece and one the 6th eyeglass, first eyeglass have negative refractive power, and its image side surface is concave surface, second eyeglass
With positive refractive power, its thing side is convex surface, and the 3rd eyeglass has positive refractive power, and its image side surface is convex surface,
4th eyeglass has positive refractive power, and its thing side and image side surface are convex surface, and the 5th eyeglass has negative bend
Luminous power, its thing side are concave surface, and the 6th eyeglass has positive refractive power, and its thing side is convex surface.
Wherein, the overall effective focal length of the chip camera lens of wide-angle six be f, the focal length of the 3rd eyeglass be f3,
More meet relationship below：
0.29 ＜ f/f3 ＜ 0.36.
In order to which above-mentioned purpose is better achieved, present invention also offers a kind of chip camera lens of wide-angle six, by thing side
To image side be sequentially one first eyeglass, one second eyeglass, an aperture, one the 3rd eyeglass, one the 4th eyeglass,
One the 5th eyeglass and one the 6th eyeglass, first eyeglass have negative refractive power, and its thing flank radius
More than image side curvature radius, second eyeglass has positive refractive power, and its thing flank radius is less than picture
Flank radius, wherein the second eyeglass thing flank radius numerical value is just, the 3rd eyeglass have just
Refractive power, and its thing flank radius is less than image side curvature radius, wherein the 3rd eyeglass thing side is bent
Rate radius distance value is negative value, and the 4th eyeglass has positive refractive power, and its thing flank radius is more than image side
Curvature radius, wherein the radius of curvature numerical value of the 4th eyeglass thing side are on the occasion of the 5th eyeglass has
Negative refractive power, and its thing flank radius is less than image side curvature radius, wherein the 5th eyeglass thing side
Radius of curvature numerical value be negative value, the 6th eyeglass has positive refractive power, and its thing flank radius is more than
Image side curvature radius, wherein the radius of curvature numerical value of the 6th eyeglass thing side be on the occasion of.
Wherein, the overall effective focal length of the chip camera lens of wide-angle six be f, the focal length of the 3rd eyeglass be f3,
More meet relationship below：
0.29 ＜ f/f3 ＜ 0.36
The technical effects of the invention are that：
First, be negative refractive power by first eyeglass, then readily available wide angle system.
2nd, be positive refractive power by the 4th eyeglass, the 5th eyeglass be negative refractive power and the 6th eyeglass
For positive refractive power, the generation of aberration can be reduced.
3rd, it is convex surface by the thing side of second eyeglass, the effect of heavy caliber, wide-angle may readily be obtained.
4th, by the ＜ f/f3 ＜ 0.36 of relational expression 0.29 are met, then balance manufacture sensitivity is contributed to.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as to the present invention's
Limit.
Brief description of the drawings
Fig. 1 is the optical system schematic diagram of first embodiment of the invention；
Fig. 2 is the chromaticity difference diagram of first embodiment of the invention；
Fig. 3 is the distortion figure of first embodiment of the invention；
Fig. 4 is the optical system schematic diagram of second embodiment of the invention；
Fig. 5 is the chromaticity difference diagram of second embodiment of the invention；
Fig. 6 is the distortion figure of second embodiment of the invention；
Fig. 7 is the optical system schematic diagram of third embodiment of the invention；
Fig. 8 is the chromaticity difference diagram of third embodiment of the invention；
Fig. 9 is the distortion figure of third embodiment of the invention.
Embodiment
The structural principle and operation principle of the present invention are described in detail below in conjunction with the accompanying drawings：
Refer to shown in Fig. 1 to Fig. 9, the present invention is a kind of chip camera lens of wide-angle six, by thing side to image side according to
Sequence is a first eyeglass L1 with negative refractive power, the second eyeglass L2, an aperture with positive refractive power
S, a 3rd eyeglass L3 with positive refractive power, a 4th eyeglass L4 with positive refractive power, one with
5th eyeglass L5 of negative refractive power and one has the 6th eyeglass L6, first eyeglass L1 of positive refractive power
Thing flank radius be more than image side curvature radius, and its image side surface is concave surface, second eyeglass L2
Thing flank radius be less than image side curvature radius, and its thing flank radius numerical value is just, and is
Convex surface, the 3rd eyeglass L3 thing flank radius is less than image side curvature radius, and its image side surface is
Convex surface, and thing flank radius numerical value is negative value, the 4th eyeglass L4 thing side and image side surface are
Convex surface, and its thing flank radius is more than image side curvature radius, and in wherein, the 4th eyeglass L4
The radius of curvature numerical value of thing side is on the occasion of the radius of curvature numerical value of the 5th eyeglass L5 things side is negative value
And it is concave surface, and its thing flank radius is less than image side curvature radius, the 6th eyeglass L6 things side
Radius of curvature numerical value on the occasion of for convex surface, and its thing flank radius is more than image side curvature radius.
Wherein, the overall effective focal length of the chip camera lens of wide-angle six be f, the 3rd eyeglass L3 focal length be f3,
More meet relationship below：
0.29 ＜ f/f3 ＜ 0.36
And contribute to balance manufacture sensitivity.
And in the present invention, positive refractive power and negative refractive power refer to refractive power on the lens axis for just or
It is negative, and the face shape in optical axis region can judge according to usual knowledge in the field, (refer to paraxial song with R values
Rate radius) positive negative judgement is concavo-convex.For thing side, when R values are timing, it is determined as convex surface, when R values
During to bear, it is determined as concave surface；For image side surface, when R values are timing, it is determined as concave surface, when R values
During to bear, it is determined as convex surface.
In addition, the overall effective focal length of the chip camera lens of wide-angle six is f, the 5th eyeglass L5 focal length is
F5, also meet relationship below：
0.68 ＜ | f/f5 | ＜ 0.9
If | f/f5 | value it is bigger than normal, be easier to correct aberration, if | f/f5 | value it is less than normal, help to shorten
System total length, make miniaturization of the present invention.
And the radius of curvature of first eyeglass L1 image side surface is R2, second eyeglass L2 thing side
Radius of curvature is R3, and the first eyeglass L1 and second eyeglass L2 also meets relationship below：
1.5 ＜ R3/R2 ＜ 4
When R3/R2 value is bigger than normal, help to increase brightness, and when R3/R2 value is less than normal, then help
In amendment astigmatism.
In addition, first eyeglass L1 thing side to the distance of an imaging surface 20 is D, first eyeglass
L1 focal length is f1, also meets relationship below：
4.2 ＜ | D/f1 | ＜ 5.4
As | D/f1 | value it is bigger than normal when, help to correct the curvature of field, and work as | D/f1 | value it is less than normal when, then help
In amendment aberration.
4th eyeglass L4 abbe number is V4, the 5th eyeglass L5 abbe number is V5, should
6th eyeglass L6 abbe number is V6, also meets relationship below：
Whereby, contribute to correct aberration.
The system length of the camera lens is TTL, the camera lens entirety effective focal length is f, also meets relationship below：
6.11≤TTL/f≤6.64
Finally, the overall lens thickness of the camera lens be ATL, the optical axis gap lengths of the camera lens be Gaa, also
Meet relationship below：
3.24≤ATL/Gaa≤4.13
Continue the optical system schematic diagram as shown in fig.1, for first embodiment of the invention, by thing side to image side
It is sequentially one first eyeglass L1, one second eyeglass L2, an aperture S, one the 3rd eyeglass L3, one the 4th mirror
Piece L4, one the 5th eyeglass L5, one the 6th eyeglass L6, an optical filter 10 and an imaging surface 20, this
One eyeglass L1 has negative refractive power, and its thing side is convex surface and image side surface is concave surface, second eyeglass L2
With positive refractive power, its thing side is convex surface and image side surface is concave surface, and the 3rd eyeglass L3 has positive dioptric
Power, its thing side is concave surface and image side surface is convex surface, and the 4th eyeglass L4 has positive refractive power, its thing side
Face and image side surface are convex surface, and the 5th eyeglass L5 has negative refractive power, and its thing side and image side surface are
Concave surface, the 6th eyeglass L6 have positive refractive power, and its thing side and image side surface are convex surface.Wherein, should
First eyeglass L1 thing side is all aspherical with image side surface, consequently, it is possible to which distortion can be corrected effectively；
Second eyeglass L2 thing side is convex surface, then contributes to obtain the effect of heavy caliber, wide-angle；And it is somebody's turn to do
4th eyeglass L4, the 5th eyeglass L5 and the 6th eyeglass L6 respectively have positive refractive power, negative refractive power,
Positive refractive power, coordinate appropriate abbe number, and with the effect of amendment aberration；In addition, the 6th eyeglass
L6 image side surface is convex surface, and can effectively reduce chief ray incident to the angle of sensor, and increases sense
The light quantity of survey.
The detailed numerical value of the present embodiment is as shown in Table 1：
Table one
Wherein, surface 1 is first eyeglass L1 thing side, and surface 2 is first eyeglass L1 picture
Side, surface 3 are second eyeglass L2 thing side, and surface 4 is second eyeglass L2 image side surface,
Surface 6 be the 3rd eyeglass L3 thing side, surface 7 be the 3rd eyeglass L3 image side surface, surface 8
For the 4th eyeglass L4 thing side, surface 9 is the 4th eyeglass L4 image side surface, and surface 10 is should
5th eyeglass L5 thing side, surface 11 are the 5th eyeglass L5 image side surface, surface 12 for this
Six eyeglass L6 thing side, surface 13 be the 6th eyeglass L6 image side surface, various embodiments of the present invention
It is all same, just do not add to repeat after.
And the thing side at intervals of first eyeglass L1 on surface 1 is to first eyeglass L1 image side surface
Distance；The image side surface at intervals of first eyeglass L1 on surface 2 is to second eyeglass L2 thing side
Distance；The thing side at intervals of second eyeglass L2 on surface 3 to second eyeglass L2 image side surface
Distance, by that analogy, to the image side surface at intervals of the optical filter 10 on surface 15 to the imaging surface 20
Distance.In each embodiment, the definition at interval is also identical, also does not add to repeat after.
And the system length of the chip camera lens of wide-angle six is 14.25mm, overall effective focal length is 2.33mm,
F-number Fno is 2, and field range FOV is 101, and image height IMGH is 3mm.
The present embodiment meets following relationship：
0.29 ＜ f/f3 ＜ 0.36
And contribute to balance manufacture sensitivity, wherein, the overall effective focal length of the chip camera lens of wide-angle six is f,
3rd eyeglass L3 focal length is f3, in the present embodiment, f/f3=0.317, therefore, the present embodiment tool
There is the effect of balance manufacture sensitivity.
The present embodiment also meets following relationship：
0.68 ＜ | f/f5 | ＜ 0.9
If | f/f5 | value it is bigger than normal, be easy to correct aberration, if | f/f5 | value it is less than normal, contribute to shorten be
System total length, wherein, the overall effective focal length of the chip camera lens of wide-angle six is f, the 5th eyeglass L5 Jiao
Away from for f5, in the present embodiment, | f/f5 |=0.801, then it can be obtained between the positive aberration of repairing and miniaturization preferable
Balance.
In addition, the first eyeglass L1 of the present embodiment and second eyeglass L2 also meets relationship below：
1.5 ＜ R3/R2 ＜ 4
When R3/R2 value is bigger than normal, help to increase brightness, and when R3/R2 value is less than normal, then have
Help correct astigmatism, wherein, the radius of curvature of first eyeglass L1 image side surface is R2, second eyeglass
The radius of curvature of L2 thing side is R3.In the present embodiment, R3/R2=2.4 then can be in system brightness
Preferable balance is obtained between amendment astigmatism.
And the present embodiment also meets relationship below：
4.2 ＜ | D/f1 | ＜ 5.4
As | D/f1 | value it is bigger than normal when, help to correct the curvature of field, and work as | D/f1 | value it is less than normal when, then help
In amendment aberration.Wherein, first eyeglass L1 thing side to the distance of the imaging surface 20 be D, this
One eyeglass L1 focal length is f1, and in the present embodiment, | D/f1 |=4.642, then can the amendment curvature of field with
Preferable balance is obtained between amendment aberration.
The present embodiment also meets relationship below：
And help to correct aberration, wherein, the 4th eyeglass L4 abbe number is V4, the 5th eyeglass
L5 abbe number is V5, the 6th eyeglass L6 abbe number is V6, in the present embodiment,Therefore it can effectively correct aberration.
And the present embodiment also meets relationship below：
6.11≤TTL/f≤6.64
Wherein, the system length of the chip camera lens of wide-angle six is TTL, the chip camera lens of wide-angle six is integrated with
Effect focal length is f, in the present embodiment, TTL/f=6.12.
Finally, the present embodiment meets relationship below：
3.24≤ATL/Gaa≤4.13
The Integrated lenses thickness of the chip camera lens of wide-angle six is ATL, the optical axis of the chip camera lens of wide-angle six is empty
Gap length is Gaa, in the present embodiment, ATL/Gaa=4.13.
Continuous collocation is referred to shown in Fig. 2 and Fig. 3, respectively the chromaticity difference diagram and distortion figure of first embodiment of the invention.
Line segment A, line segment B, line segment C in Fig. 2 are respectively the present embodiment be to wavelength 0.488 micron (μm),
The light of 0.546 micron (μm), 0.6 micron (μm), in field height be 0 millimeter (mm) to 3 millimeters (mm)
Between caused lateral chromatism difference, and can learn, lateral chromatism difference caused by the present embodiment is less than 4.5
Micron (μm), and distortion is less than 5.5% caused by the present embodiment as seen from Figure 3.Therefore, this reality
The aberration of example is applied, distorts and all can effectively be corrected, and there is preferable image quality.
And first eyeglass L1, second eyeglass L2, the 3rd eyeglass L3, the 4th eyeglass L4, should
5th eyeglass L5 and the 6th eyeglass L6 material can be glass or plastic cement, or can be collocated with each other configuration,
There is the advantage for reducing production cost using plastic cement material, and glass then has high temperature resistant, wear-resistant and wear
The advantages that rate is higher thoroughly.And when first eyeglass L1, second eyeglass L2, the 3rd eyeglass L3, this
Four eyeglass L4, the 5th eyeglass L5 and the 6th eyeglass L6 are aspherical, and material is plastic cement or glass
When, following aspherical equation formula can be met：
Wherein, c=1/r, r are surface curvature radius, and h is light in the height on this surface, and k is conical surface system
Number, A is second-order coefficient, and B is fourth order coefficient, and C is the 6th level number, and D is the 8th level number,
E is the tenth level number, and F is the tenth second order coefficient, and G is the tenth quadravalence coefficient, and H is the 16th level number.
And the first eyeglass of this in the present embodiment L1, second eyeglass L2, the 3rd eyeglass L3, the 4th mirror
Piece L4, the 5th eyeglass L5 and the 6th eyeglass L6 each aspherical parameter are as shown in Table 2：
Table two
Continue the optical system schematic diagram as shown in fig.4, for second embodiment of the invention, by thing side to image side
It is sequentially one first eyeglass L1, one second eyeglass L2, an aperture S, one the 3rd eyeglass L3, one the 4th mirror
Piece L4, one the 5th eyeglass L5, one the 6th eyeglass L6, an optical filter 10 and an imaging surface 20, this
One eyeglass L1 has negative refractive power, and its thing side is convex surface and image side surface is concave surface, second eyeglass L2
With positive refractive power, its thing side is convex surface and image side surface is concave surface, and the 3rd eyeglass L3 has positive dioptric
Power, its thing side is concave surface and image side surface is convex surface, and the 4th eyeglass L4 has positive refractive power, its thing side
Face and image side surface are convex surface, and the 5th eyeglass L5 has negative refractive power, and its thing side and image side surface are
Concave surface, the 6th eyeglass L6 have positive refractive power, and its thing side and image side surface are convex surface.
Wherein, first eyeglass L1 thing side is all aspherical with image side surface, consequently, it is possible to can be effective
Amendment distortion；Second eyeglass L2 thing side is convex surface, then contributes to obtain heavy caliber, wide-angle
Effect；And the 4th eyeglass L4, the 5th eyeglass L5 and the 6th eyeglass L6 have positive dioptric respectively
Power, negative refractive power, positive refractive power, coordinate appropriate abbe number, and with the effect of amendment aberration；This
Outside, the 6th eyeglass L6 image side surface is convex surface, and can effectively reduce chief ray incident to sensor
Angle, and increase the light quantity of sensing.
The detailed numerical value of the present embodiment is as shown in Table 3：
Table three
And the system length of the chip camera lens of wide-angle six is 15.75mm, overall effective focal length is 2.38mm,
F-number Fno is 2, and field range FOV is 105, and image height IMGH is 3mm.
The present embodiment meets following relationship：
0.29 ＜ f/f3 ＜ 0.36
And contribute to balance manufacture sensitivity, wherein, the overall effective focal length of the chip camera lens of wide-angle six is f,
3rd eyeglass L3 focal length is f3, in the present embodiment, f/f3=0.335, therefore, the present embodiment tool
There is the effect of balance manufacture sensitivity.
The present embodiment also meets following relationship：
0.68 ＜ | f/f5 | ＜ 0.9
If | f/f5 | value it is bigger than normal, be easy to correct aberration, if | f/f5 | value it is less than normal, contribute to shorten be
System total length, wherein, the overall effective focal length of the chip camera lens of wide-angle six is f, the 5th eyeglass L5 Jiao
Away from for f5, in the present embodiment, | f/f5 |=0.715, then it can be obtained between the positive aberration of repairing and miniaturization preferable
Balance show.
In addition, the first eyeglass L1 of the present embodiment and second eyeglass L2 also meets relationship below：
1.5 ＜ R3/R2 ＜ 4
When R3/R2 value is bigger than normal, help to increase brightness, and when R3/R2 value is less than normal, then help
In amendment astigmatism, wherein, the radius of curvature of first eyeglass L1 image side surface is R2, second eyeglass
The radius of curvature of L2 thing side is R3.In the present embodiment, R3/R2=1.915 then can be in system
Preferable balance is obtained between brightness and amendment astigmatism.
And the present embodiment also meets relationship below：
4.2 ＜ | D/f1 | ＜ 5.4
As | D/f1 | value it is bigger than normal when, help to correct the curvature of field, and work as | D/f1 | value it is less than normal when, then help
In amendment aberration.Wherein, first eyeglass L1 thing side to the distance of the imaging surface 20 be D, this
One eyeglass L1 focal length is f1, and in the present embodiment, | D/f1 |=4.449, then can the amendment curvature of field with
Preferable balance is obtained between amendment aberration.
The present embodiment also meets relationship below：
And help to correct aberration, wherein, the 4th eyeglass L4 abbe number is V4, the 5th eyeglass
L5 abbe number is V5, the 6th eyeglass L6 abbe number is V6, in the present embodiment,Therefore it can effectively correct aberration.
And the present embodiment also meets relationship below：
6.11≤TTL/f≤6.64
Wherein, the system length of the chip camera lens of wide-angle six is TTL, the chip camera lens of wide-angle six is integrated with
Effect focal length is f, in the present embodiment, TTL/f=6.62.
Finally, the present embodiment meets relationship below：
3.24≤ATL/Gaa≤4.13
The Integrated lenses thickness of the chip camera lens of wide-angle six is ATL, the optical axis of the chip camera lens of wide-angle six is empty
Gap length is Gaa, in the present embodiment, ATL/Gaa=3.24.
Continuous collocation is referred to shown in Fig. 5 and Fig. 6, respectively the chromaticity difference diagram and distortion figure of second embodiment of the invention.
Line segment A, line segment B, line segment C in Fig. 5 are respectively the present embodiment be to wavelength 0.488 micron (μm),
The light of 0.546 micron (μm), 0.6 micron (μm), in field height be 0 millimeter (mm) to 3 millimeters (mm)
Between caused lateral chromatism difference, and can learn, lateral chromatism difference caused by the present embodiment is less than 3.5
Micron (μm), and distortion is less than 8.5% caused by the present embodiment as seen from Figure 6.Therefore, this reality
The aberration of example is applied, distorts and all can effectively be corrected, and there is preferable image quality.
And first eyeglass L1, second eyeglass L2, the 3rd eyeglass L3, the 4th eyeglass L4, should
5th eyeglass L5 and the 6th eyeglass L6 material can be glass or plastic cement, or can be collocated with each other configuration,
There is the advantage for reducing production cost using plastic cement material, and glass then has high temperature resistant, wear-resistant and wear
The advantages that rate is higher thoroughly.And when first eyeglass L1, second eyeglass L2, the 3rd eyeglass L3, this
Four eyeglass L4, the 5th eyeglass L5 and the 6th eyeglass L6 are aspherical, and material is plastic cement or glass
When, following aspherical equation formula can be met：
Wherein, c=1/r, r are surface curvature radius, and h is light in the height on this surface, and k is conical surface system
Number, A is second-order coefficient, and B is fourth order coefficient, and C is the 6th level number, and D is the 8th level number,
E is the tenth level number, and F is the tenth second order coefficient, and G is the tenth quadravalence coefficient, and H is the 16th level number.
And the first eyeglass of this in the present embodiment L1, second eyeglass L2, the 3rd eyeglass L3, the 4th mirror
Piece L4, the 5th eyeglass L5 and the 6th eyeglass L6 each aspherical parameter are as shown in Table 4：
Table four
Continue the optical system schematic diagram as shown in fig.7, for third embodiment of the invention, by thing side to image side
It is sequentially one first eyeglass L1, one second eyeglass L2, an aperture S, one the 3rd eyeglass L3, one the 4th mirror
Piece L4, one the 5th eyeglass L5, one the 6th eyeglass L6, an optical filter 10 and an imaging surface 20, this
One eyeglass L1 has negative refractive power, and its thing side is convex surface and image side surface is concave surface, second eyeglass L2
With positive refractive power, its thing side is convex surface and image side surface is concave surface, and the 3rd eyeglass L3 has positive dioptric
Power, its thing side is concave surface and image side surface is convex surface, and the 4th eyeglass L4 has positive refractive power, its thing side
Face and image side surface are convex surface, and the 5th eyeglass L5 has negative refractive power, and its thing side and image side surface are
Concave surface, the 6th eyeglass L6 have positive refractive power, and its thing side and image side surface are convex surface.Wherein, should
First eyeglass L1 thing side is all aspherical with image side surface, consequently, it is possible to which distortion can be corrected effectively；
Second eyeglass L2 thing side is convex surface, then contributes to obtain the effect of heavy caliber, wide-angle；And it is somebody's turn to do
4th eyeglass L4, the 5th eyeglass L5 and the 6th eyeglass L6 respectively have positive refractive power, negative refractive power,
Positive refractive power, coordinate appropriate abbe number, and with the effect of amendment aberration；In addition, the 6th eyeglass
L6 image side surface is convex surface, and can effectively reduce chief ray incident to the angle of sensor, and increases sense
The light quantity of survey.
The detailed numerical value of the present embodiment is as shown in Table 5：
Table five
And the system length of the chip camera lens of wide-angle six is 15.99mm, overall effective focal length is 2.41mm,
F-number Fno is 2, and field range FOV is 104, and image height IMGH is 3mm.
The present embodiment meets following relationship：
0.29 ＜ f/f3 ＜ 0.36
And contribute to balance manufacture sensitivity, wherein, the overall effective focal length of the chip camera lens of wide-angle six is f,
3rd eyeglass L3 focal length is f3, in the present embodiment, f/f3=0.323, therefore, the present embodiment tool
There is the effect of balance manufacture sensitivity.
The present embodiment also meets following relationship：
0.68 ＜ | f/f5 | ＜ 0.9
If | f/f5 | value it is bigger than normal, be easy to correct aberration, if | f/f5 | value it is less than normal, contribute to shorten be
System total length, wherein, the overall effective focal length of the chip camera lens of wide-angle six is f, the 5th eyeglass L5 Jiao
Away from for f5, in the present embodiment, | f/f5 |=0.855, then it can be obtained between the positive aberration of repairing and miniaturization preferable
Balance.
In addition, the first eyeglass L1 of the present embodiment and second eyeglass L2 also meets relationship below：
1.5 ＜ R3/R2 ＜ 4
When R3/R2 value is bigger than normal, help to increase brightness, and when R3/R2 value is less than normal, then help
In amendment astigmatism, wherein, the radius of curvature of first eyeglass L1 image side surface is R2, second eyeglass
The radius of curvature of L2 thing side is R3.In the present embodiment, R3/R2-3.466 then can be in system
Preferable balance is obtained between brightness and amendment astigmatism.
And the present embodiment also meets relationship below：
4.2 ＜ | D/f1 | ＜ 5.4
As | D/f1 | value it is bigger than normal when, help to correct the curvature of field, and work as | D/f1 | value it is less than normal when, then help
In amendment aberration.Wherein, first eyeglass L1 thing side to the distance of an imaging surface 20 be D, this
One eyeglass L1 focal length is f1, and in the present embodiment, | D/f1 |=5.076, then can the amendment curvature of field with
Preferable balance is obtained between amendment aberration.
The present embodiment also meets relationship below：
And help to correct aberration, wherein, the 4th eyeglass L4 abbe number is V4, the 5th eyeglass
L5 abbe number is V5, the 6th eyeglass L6 abbe number is V6, in the present embodiment,Therefore it can effectively correct aberration.
And the present embodiment also meets relationship below：
6.11≤TTL/f≤6.64
Wherein, the system length of the chip camera lens of wide-angle six is TTL, the chip camera lens of wide-angle six is integrated with
Effect focal length is f, in the present embodiment, TTL/f=6.63.
Finally, the present embodiment meets relationship below：
3.24≤ATL/Gaa≤4.13
The Integrated lenses thickness of the chip camera lens of wide-angle six is ATL, the optical axis of the chip camera lens of wide-angle six is empty
Gap length is Gaa, in the present embodiment, ATL/Gaa-3.35.
Continuous collocation is referred to shown in Fig. 8 and Fig. 9, respectively the chromaticity difference diagram and distortion figure of third embodiment of the invention.
Line segment A, line segment B, line segment C in Fig. 8 are respectively the present embodiment be to wavelength 0.488 micron (μm),
The light of 0.546 micron (μm), 0.6 micron (μm), in field height be 0 millimeter (mm) to 3 millimeters (mm)
Between caused lateral chromatism difference, and can learn, lateral chromatism difference caused by the present embodiment is less than 6.5
Micron (μm), and distortion is less than 5% caused by the present embodiment as seen from Figure 9.Therefore, this reality
The aberration of example is applied, distorts and all can effectively be corrected, and there is preferable image quality.
And first eyeglass L1, second eyeglass L2, the 3rd eyeglass L3, the 4th eyeglass L4, should
5th eyeglass L5 and the 6th eyeglass L6 material can be glass or plastic cement, or can be collocated with each other configuration,
There is the advantage for reducing production cost using plastic cement material, and glass then has high temperature resistant, wear-resistant and wear
The advantages that rate is higher thoroughly.And when first eyeglass L1, second eyeglass L2, the 3rd eyeglass L3, this
Four eyeglass L4, the 5th eyeglass L5 and the 6th eyeglass L6 are aspherical, and material is plastic cement or glass
When, following aspherical equation formula can be met：
Wherein, c=1/r, r are surface curvature radius, and h is light in the height on this surface, and k is conical surface system
Number, A is second-order coefficient, and B is fourth order coefficient, and C is the 6th level number, and D is the 8th level number,
E is the tenth level number, and F is the tenth second order coefficient, and G is the tenth quadravalence coefficient, and H is the 16th level number.
And the first eyeglass of this in the present embodiment L1, second eyeglass L2, the 3rd eyeglass L3, the 4th mirror
Piece L4, the 5th eyeglass L5 and the 6th eyeglass L6 each aspherical parameter are as shown in Table 6：
Table six
And first embodiment can also extrapolate following numerical value as shown in Table 7 to 3rd embodiment in the present embodiment：
Table seven
| Numerical value | First embodiment | Second embodiment | 3rd embodiment | Numerical intervals |
| f/R1 | 0.15 | 0.04 | 0.16 | 0.03≤f/R1≤0.17 |
| f/R2 | 1.61 | 1.30 | 1.65 | 1.3≤f/R2≤1.66 |
| f/R3 | 0.67 | 0.67 | 0.48 | 0.47≤f/R3≤0.67 |
| f/R4 | 0.14 | 0.42 | 0.17 | 0.14≤f/R4≤0.43 |
| f/R5 | -0.28 | -0.50 | -0.34 | -0.49≤f/R5≤-0.28 |
| f/R6 | -0.83 | -0.87 | -0.89 | -0.89≤f/R6≤-0.83 |
| f/R7 | 0.42 | 0.55 | 0.42 | 0.41≤f/R7≤0.56 |
| f/R8 | -0.92 | -0.66 | -0.91 | -0.91≤f/R8≤-0.66 |
| f/R9 | -1.02 | -1.03 | -1.06 | -1.06≤f/R9≤-1.03 |
| f/R10 | 0.20 | 0.07 | 0.23 | 0.06≤f/R10≤0.24 |
| f/R11 | 0.90 | 0.91 | 0.91 | 0.9≤f/R11≤0.91 |
| f/R12 | -0.25 | -0.23 | -0.36 | -0.36≤f/R12≤-0.24 |
| f/f1 | -0.76 | -0.67 | -0.77 | -0.76≤f/f1≤-0.68 |
| f/f2 | 0.36 | 0.25 | 0.30 | 0.24≤f/f2≤0.37 |
| f/f4 | 0.64 | 0.59 | 0.65 | 0.59≤f/f4≤0.66 |
| f/f6 | 0.58 | 0.59 | 0.62 | 0.58≤f/f6≤0.63 |
| TTL/f | 6.12 | 6.62 | 6.63 | 6.11≤TTL/f≤6.64 |
| ATL/Gaa | 4.13 | 3.24 | 3.35 | 3.24≤ATL/Gaa≤4.13 |
On the symbol in upper table, make one below and be described collectively, f is that the system of the six chips wide-angle lens is burnt
Away from value, R1 is the radius of curvature of the first eyeglass L1 things side, and R2 is the first eyeglass L1 image side surfaces
Radius of curvature, R3 are the radius of curvature of the second eyeglass L2 things side, and R4 is the second eyeglass L2 image sides
The radius of curvature in face, R5 are the radius of curvature of the 3rd eyeglass L3 things side, and R6 is the 3rd eyeglass L3
The radius of curvature of image side surface, R7 are the radius of curvature of the 4th eyeglass L4 things side, and R8 is the 4th mirror
The radius of curvature of piece L4 image side surfaces, R9 are the radius of curvature of the 5th eyeglass L5 things side, and R10 is should
The radius of curvature of 5th eyeglass L5 image side surfaces, R11 are the radius of curvature of the 6th eyeglass L6 things side,
R12 is the radius of curvature of the 6th eyeglass L6 image side surfaces, and TTL is that the system of the six chips wide-angle lens is grown
Degree, ATL are the integral thickness of the eyeglass of the six chips wide-angle lens, and Gaa is the six chips wide-angle lens
Optical axis gap lengths, so as to making six chip wide-angle lens that there is preferable imaging effect.
In summary, the invention has the characteristics that：
First, the present invention meets the relational expressions of 0.29 ＜ f/f3 ＜ 0.36, and can help to balance manufacture sensitivity.
2nd, the present invention meet 0.68 ＜ | f/f5 | the relational expressions of ＜ 0.9, and if | f/f5 | value it is bigger than normal, can have
The amendment aberration of effect, if | f/f5 | value it is less than normal, system total length can be shortened, make miniaturization of the present invention.
3rd, first eyeglass and second eyeglass meet the relational expressions of 1.5 ＜ R3/R2 ＜ 4, and work as R3/R2
Value it is bigger than normal when, can obtain the effect of wide-angle, and increase brightness, and when R3/R2 value is less than normal, then may be used
Correct astigmatism.
4th, the present invention meets 4.2 ＜ | D/f1 | relational expressions of ＜ 5.4, and as | D/f1 | value it is bigger than normal when, can
Correct the curvature of field, and work as | D/f1 | value it is less than normal when, then can correct aberration.
5th, the present invention meetsDuring relational expression, aberration can be effectively corrected.
6th, it is all aspherical by the thing side of first eyeglass and image side surface, and can effectively corrects abnormal
Become.
7th, it is convex surface by the thing side of second eyeglass, then can obtain the effect of heavy caliber, wide-angle.
8th, there is positive refractive power respectively by the 4th eyeglass, the 5th eyeglass and the 6th eyeglass, bear
Refractive power, positive refractive power, and with the effect of amendment aberration.
9th, it is convex surface by the image side surface of the 6th eyeglass, and chief ray incident can be effectively reduced to sense
The angle of device is surveyed, and increases the light quantity of sensing.
Tenth, by by first eyeglass, second eyeglass, the 3rd eyeglass, the 4th eyeglass, this
Five eyeglasses and the 6th eyeglass are arranged to plastic cement, have the advantage for reducing production cost, and if be arranged to glass,
Then have the advantages that high temperature resistant, wear-resistant and penetrance are higher.
Certainly, the present invention can also have other various embodiments, in the feelings without departing substantially from spirit of the invention and its essence
Under condition, those skilled in the art work as can make various corresponding changes and deformation according to the present invention, but
These corresponding changes and deformation should all belong to the protection domain of appended claims of the invention.
Claims (15)
1. a kind of chip camera lens of wide-angle six, it is characterised in that be sequentially by thing side to image side：
One has the first eyeglass of negative refractive power, and its image side surface is concave surface；
One has the second eyeglass of positive refractive power, and its thing side is convex surface；
One aperture；
One has the 3rd eyeglass of positive refractive power, and its image side surface is convex surface；
One has the 4th eyeglass of positive refractive power, and its thing side and image side surface are convex surface；
One has the 5th eyeglass of negative refractive power, and its thing side is concave surface；And
One has the 6th eyeglass of positive refractive power, and its thing side is convex surface；
Wherein, the overall effective focal length of the chip camera lens of wide-angle six be f, the focal length of the 3rd eyeglass be f3,
Also meet relationship below：
0.29 ＜ f/f3 ＜ 0.36.
2. the chip camera lens of wide-angle six according to claim 1, it is characterised in that the thing of the 3rd eyeglass
Side is concave surface.
3. a kind of chip camera lens of wide-angle six, it is characterised in that sequentially included by thing side to image side：
One first eyeglass, there is negative refractive power, its thing flank radius is more than image side curvature radius；
One second eyeglass, there is positive refractive power, its thing flank radius is less than image side curvature radius, its
In the second eyeglass thing flank radius numerical value for just；
One aperture；
One the 3rd eyeglass, there is positive refractive power, its thing flank radius is less than image side curvature radius, its
In the 3rd eyeglass thing flank radius numerical value be negative value；
One the 4th eyeglass, there is positive refractive power, its thing flank radius is more than image side curvature radius, its
In the 4th eyeglass thing side radius of curvature numerical value be on the occasion of；
One the 5th eyeglass, there is negative refractive power, its thing flank radius is less than image side curvature radius, its
In the radius of curvature numerical value of the 5th eyeglass thing side be negative value；And
One the 6th eyeglass, there is positive refractive power, its thing flank radius is more than image side curvature radius, its
In the 6th eyeglass thing side radius of curvature numerical value be on the occasion of；
Wherein, the overall effective focal length of the chip camera lens of wide-angle six be f, the focal length of the 3rd eyeglass be f3,
Also meet relationship below：
0.29 ＜ f/f3 ＜ 0.36.
4. the chip camera lens of wide-angle six according to claim 3, it is characterised in that the picture of the 4th eyeglass
Side is convex surface.
5. the chip camera lens of wide-angle six according to claim 1 or 3, it is characterised in that the wide-angle six
The system length of formula camera lens is TTL, the overall effective focal length of the chip camera lens of wide-angle six is f, also full
Sufficient relationship below：
6.11≤TTL/f≤6.64。
6. the chip camera lens of wide-angle six according to claim 1 or 3, it is characterised in that the wide-angle six
The Integrated lenses thickness of formula camera lens is ATL, the optical axis gap lengths of the chip camera lens of wide-angle six are Gaa,
Also meet relationship below：
3.24≤ATL/Gaa≤4.13。
7. the chip camera lens of wide-angle six according to claim 1 or 3, it is characterised in that first eyeglass
Thing side be convex surface.
8. the chip camera lens of wide-angle six according to claim 1 or 3, it is characterised in that second eyeglass
Image side surface be concave surface.
9. the chip camera lens of wide-angle six according to claim 1 or 3, it is characterised in that the 5th eyeglass
Image side surface be concave surface.
10. the chip camera lens of wide-angle six according to claim 1 or 3, it is characterised in that the 6th eyeglass
Image side surface is convex surface.
11. the chip camera lens of wide-angle six according to claim 1 or 3, it is characterised in that the chip of wide-angle six
The overall effective focal length of camera lens is f, the focal length of the 5th eyeglass is f5, also meets relationship below：
0.68 ＜ | f/f5 | ＜ 0.9.
12. the chip camera lens of wide-angle six according to claim 1 or 3, it is characterised in that the picture of first eyeglass
The radius of curvature of side is R2, the radius of curvature of the thing side of second eyeglass is R3, first mirror
Piece also meets relationship below with second eyeglass：
1.5 ＜ R3/R2 ＜ 4.
13. the chip camera lens of wide-angle six according to claim 1 or 3, it is characterised in that first eyeglass
Thing side to the distance of an imaging surface is D, the focal length of first eyeglass is f1, also meets following relation
Formula：
4.2 ＜ | D/f1| ＜ 5.4.
14. the chip camera lens of wide-angle six according to claim 1 or 3, it is characterised in that the 4th eyeglass
Abbe number is V4, the abbe number of the 5th eyeglass is V5, the abbe number of the 6th eyeglass is
V6, also meet relationship below：
<mrow>
<mfrac>
<mrow>
<mo>(</mo>
<mi>V</mi>
<mn>4</mn>
<mo>+</mo>
<mi>V</mi>
<mn>6</mn>
<mo>)</mo>
</mrow>
<mn>2</mn>
</mfrac>
<mo>-</mo>
<mi>V</mi>
<mn>5</mn>
<mo>></mo>
<mn>25.</mn>
</mrow>
15. the chip camera lens of wide-angle six according to claim 1 or 3, it is characterised in that first eyeglass
Thing side is aspherical with image side surface.
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| CN110794551A (en) * | 2018-08-01 | 2020-02-14 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN111352221A (en) * | 2018-10-10 | 2020-06-30 | 浙江舜宇光学有限公司 | Optical lens group |
| WO2021128259A1 (en) * | 2019-12-27 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| WO2021128267A1 (en) * | 2019-12-27 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Image-capture optical lens |
| CN115202006A (en) * | 2018-07-20 | 2022-10-18 | 三星电机株式会社 | Optical imaging system and mobile electronic device |
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| WO2021128259A1 (en) * | 2019-12-27 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| WO2021128267A1 (en) * | 2019-12-27 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Image-capture optical lens |
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|---|---|
| CN107479170B (en) | 2020-06-23 |
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