CN105629448B - The electronic device of optical imaging lens and the application optical imaging lens - Google Patents
The electronic device of optical imaging lens and the application optical imaging lens Download PDFInfo
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- CN105629448B CN105629448B CN201410621393.8A CN201410621393A CN105629448B CN 105629448 B CN105629448 B CN 105629448B CN 201410621393 A CN201410621393 A CN 201410621393A CN 105629448 B CN105629448 B CN 105629448B
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Abstract
The invention relates to a kind of optical lens, particularly relate to a kind of optical imaging lens and electronic device.Optical imaging lens, including five lens, each lens all have an object side and an image side surface；The image side surface of first lens has a concave part for being located at circumference near zone；The object side of second lens has a convex surface part for being located at circumference near zone, and the image side surface of the second lens has a convex surface part for being located at circumference near zone；Third lens are plastic material；The image side surface of 4th lens has a convex surface part for being located at circumference near zone；And the 5th the object sides of lens there is a concave part for being located at circumference near zone, and meet (G12+G45)/T3≤1.5 and T3/G12≤1.1.The electronic device of the present invention includes casing；And an image module, and including above-mentioned optical imaging lens, a lens barrel, a module rear seat unit and an image sensor.The present invention has both good practical performance and contributes to light and shortization.
Description
Technical field
The invention relates to a kind of optical lens, particularly relate to a kind of optical imaging lens and apply the optical imaging lens
The electronic device of head.
Background technology
In recent years, the portable electronic products such as mobile phone and digital camera is universal so that image module the relevant technologies are vigorously sent out
Exhibition, the image module mainly include optical imaging lens, module rear seat unit (module holder unit) and sensor
(sensor) components such as, and the slim light and handyization trend of mobile phone and digital camera also allow image module miniature requirement more and more
Height, with photosensitive coupling component (Charge Coupled Device, referred to as CCD) or Complimentary Metal-Oxide semiconductor group
The technological progress of part (Complementary Metal-Oxide Semiconductor, referred to as CMOS) and result of scaling,
The optical lens being loaded in image module is also required to correspondingly shorten length, but in order to avoid under photographic effects and quality
Drop still will take into account good optical property in the length for shortening optical lens.However the most important characteristic of optical lens is not
Outer is exactly image quality and volume.
U.S. Patent Bulletin number 8441736, Patent Case disclose a kind of optical lens being made of five lens, so
And the system length of the optical lens can not effectively be contracted to certain length, to meet the design requirement of mobile phone slimming.
In conclusion the technical difficulty of micromation camera lens is significantly higher by conventional lenses, therefore how to produce and meet consumption
The optical lens of property electronic product demand, and continue to promote its image quality, for a long time always this field production, official, educational circles
The target earnestly pursued.
Invention content
Therefore, the purpose of the present invention is providing one kind under conditions of lens system length is shortened, still is being able to possess good
The optical imaging lens of good optical property.
Then optical imaging lens of the present invention, from object side to image side along an optical axis sequentially comprising one first lens, an aperture,
One second lens, a third lens, one the 4th lens and one the 5th lens, and first lens to the 5th lens all have
Refractive index, and respectively include one towards object side and make object side that imaging light passes through and one towards image side and lead to imaging light
The image side surface crossed.
The image side surface of first lens has a concave part for being located at circumference near zone；The object side of second lens
Face has a convex surface part for being located at circumference near zone, and the image side surface of second lens has one to be located at circumference near zone
Convex surface part；The third lens are plastic material；The image side surface of 4th lens has a convex surface for being located at circumference near zone
Portion；And the 5th lens the object side have one be located at circumference near zone concave part.
Wherein, the lens which has refractive index only have five, first lens and second lens it
Between the air gap on optical axis be G12, the air gap between the 4th lens and the 5th lens on optical axis is G45,
The thickness of the third lens on optical axis is T3, and meets (G12+G45)/T3≤1.5 and T3/G12≤1.1.
The advantageous effect of optical imaging lens of the present invention is：Near the object side of said lens or image side surface circumference
The concaveconvex shape design and arrangement in region, making the optical imaging lens, still having can have under conditions of system length is shortened
Effect overcomes the optical property of aberration, and provides preferable image quality.
Therefore, another object of the present invention is providing a kind of electronic device applied to aforementioned optical imaging lens.
Then, electronic device of the invention, the image module being mounted on comprising a casing and one in the casing.
The image module includes being used for for optical imaging lens setting just like the aforementioned optical imaging lens, one
Lens barrel, one are used to be set to the image sensing of the optical imaging lens image side for the module rear seat unit of lens barrel setting and one
Device.
The advantageous effect of electronic device of the present invention is：There is aforementioned optical imagery by being loaded in the electronic device
The image module of camera lens with the sharp imaging lens under conditions of system length is shortened, still is able to provide good optical property
Advantage, more slim light and handy electronic device is made in the case of optical property is not sacrificed, has both the present invention good
Practical performance and the structure design for contributing to light and shortization, and higher-quality consumption demand can be met.
Description of the drawings
The other features and effect of the present invention will be clearly presented in being described in detail with reference to the embodiment of schema,
In：
Fig. 1 is a schematic diagram, illustrates the surface structure of a lens；
Fig. 2 is a schematic diagram, illustrates the face type concaveconvex structure and light focus of a lens；
Fig. 3 is a schematic diagram, illustrates the surface structure of the lens of an example one；
Fig. 4 is a schematic diagram, illustrates the surface structure of the lens of an example two；
Fig. 5 is a schematic diagram, illustrates the surface structure of the lens of an example three；
Fig. 6 is a configuration schematic diagram, illustrates a first embodiment of optical imaging lens of the present invention；
Fig. 7 is the longitudinal spherical aberration of the first embodiment and every aberration diagram；
Fig. 8 is a tabular drawing, illustrates the optical data of each lens of the first embodiment；
Fig. 9 is a tabular drawing, illustrates the asphericity coefficient of each lens of the first embodiment；
Figure 10 is a configuration schematic diagram, illustrates a second embodiment of optical imaging lens of the present invention；
Figure 11 is the longitudinal spherical aberration of the second embodiment and every aberration diagram；
Figure 12 is a tabular drawing, illustrates the optical data of each lens of the second embodiment；
Figure 13 is a tabular drawing, illustrates the asphericity coefficient of each lens of the second embodiment；
Figure 14 is a configuration schematic diagram, illustrates a 3rd embodiment of optical imaging lens of the present invention；
Figure 15 is the longitudinal spherical aberration of the 3rd embodiment and every aberration diagram；
Figure 16 is a tabular drawing, illustrates the optical data of each lens of the 3rd embodiment；
Figure 17 is a tabular drawing, illustrates the asphericity coefficient of each lens of the 3rd embodiment；
Figure 18 is a configuration schematic diagram, illustrates a fourth embodiment of optical imaging lens of the present invention；
Figure 19 is the longitudinal spherical aberration of the fourth embodiment and every aberration diagram；
Figure 20 is a tabular drawing, illustrates the optical data of each lens of the fourth embodiment；
Figure 21 is a tabular drawing, illustrates the asphericity coefficient of each lens of the fourth embodiment；
Figure 22 is a configuration schematic diagram, illustrates one the 5th embodiment of optical imaging lens of the present invention；
Figure 23 is the longitudinal spherical aberration of the 5th embodiment and every aberration diagram；
Figure 24 is a tabular drawing, illustrates the optical data of each lens of the 5th embodiment；
Figure 25 is a tabular drawing, illustrates the asphericity coefficient of each lens of the 5th embodiment；
Figure 26 is a configuration schematic diagram, illustrates a sixth embodiment of optical imaging lens of the present invention；
Figure 27 is the longitudinal spherical aberration of the sixth embodiment and every aberration diagram；
Figure 28 is a tabular drawing, illustrates the optical data of each lens of the sixth embodiment；
Figure 29 is a tabular drawing, illustrates the asphericity coefficient of each lens of the sixth embodiment；
Figure 30 is a tabular drawing, illustrates the first embodiments of the five chips optical imaging lens to the sixth embodiment
Optical parameter；
Figure 31 is a tabular drawing, illustrates the first embodiments of the five chips optical imaging lens to the sixth embodiment
Optical parameter；
Figure 32 is a schematic cross-sectional view, illustrates a first embodiment of electronic device of the present invention；And
Figure 33 is a schematic cross-sectional view, illustrates a second embodiment of electronic device of the present invention.
[symbol description]
10 optical imaging lens
2 apertures
3 first lens
31 object sides
311 convex surface parts
312 convex surface parts
32 image side surfaces
321 concave parts
322 concave parts
4 second lens
41 object sides
411 convex surface parts
412 convex surface parts
42 image side surfaces
421 convex surface parts
422 convex surface parts
5 third lens
51 object sides
511 concave parts
512 concave parts
513 convex surface parts
52 image side surfaces
521 concave parts
522 convex surface parts
523 concave parts
524 convex surface parts
6 the 4th lens
61 object sides
611 concave parts
612 concave parts
62 image side surfaces
621 convex surface parts
622 convex surface parts
7 the 5th lens
71 object sides
711 convex surface parts
712 concave parts
72 image side surfaces
721 concave parts
722 convex surface parts
9 optical filters
91 object sides
92 image side surfaces
100 imaging surfaces
I optical axises
1 electronic device
11 casings
12 image modules
120 module rear seat units
121 camera lens back seats
122 image sensor back seats
123 first pedestals
124 second pedestals
125 coils
126 magnet assemblies
130 image sensors
21 lens barrels
IIth, III axis
Specific embodiment
Before the present invention is described in detail, it shall be noted that in the following description content, similar component is with identical
Number represent.
This specification says its " lens have positive refractive index (or negative refractive index) ", refers to the lens with Gauss light
The refractive index on optical axis that theory calculates is just (or being negative).The image side surface, object side are defined as imaging light and pass through
Range, wherein imaging light include chief ray (chief ray) Lc and rim ray (marginal ray) Lm, such as Fig. 1
Shown, I is optical axis and this lens is radially symmetrical using optical axis I as symmetry axis, and light passes through the region on optical axis
For optical axis near zone A, rim ray by region be circumference near zone C, in addition, the lens also include an extension E
(i.e. the regions of circumference near zone C radially outward), with so that the lens group is loaded in an optical imaging lens, preferably into
Picture light can't be by extension E, but the structure of extension E is not limited to this with shape, and embodiment below is asks
The extension of part is succinctly omitted in schema.In more detail, judge face shape or optical axis near zone, circumference near zone,
Or the method for the range of multiple regions for example it is following some：
It is the sectional view of a lens radially 1. please referring to Fig. 1.It is seen with the sectional view, is judging aforementioned areas
During range, a central point is defined as the intersection point with optical axis I on the lens surface, and a transfer point is located on the lens surface
A bit, it is and vertical with optical axis by a tangent line of the point.It is sequentially first if there is a plurality of transfer points radially outward
Transfer point, the second transfer point, and away from optical axis, radially farthest transfer point is N transfer points on effectively half effect diameter.Central point and
Ranging from optical axis near zone between first transfer point, the region of N transfer points radially outward are circumference near zone, in
Between can distinguish different region according to each transfer point.In addition, effective radius is on rim ray Lm and lens surface intersection to optical axis I
Vertical range.
2. as shown in Fig. 2, the shape bumps system in the region with parallel through the light in the region (or light extension line) with
The intersection point of optical axis I determines (light focus decision procedure) in image side or object side.For example, after light is by the region,
Light can be focused on towards image side, and Focus Club's position R points in image side, such as Fig. 2 with optical axis, then the region is convex surface part.If conversely,
After light is by certain region, light can dissipate, and the focus of extension line and optical axis is in object side, such as M points in Fig. 2, Ze Gai areas
Domain is concave part, so central point, to being convex surface part between the first transfer point, the region of the first transfer point radially outward is concave surface
Portion；As shown in Figure 2, which is the separation that convex surface part turns concave part, thus can define the region with it is radially adjacent
The region of the inside in the region is to have different face shapes by boundary of the transfer point.If in addition, optical axis I near zones
Face shape judgement (can be referred to paraxial radius of curvature, it is soft to be often referred to optics according to the judgment mode of skill usual in the field with R values
The R values on lens data library (lens data) in part) positive negative judgement is concave-convex.For object side, when R values be timing, judgement
For convex surface part, when R values are negative, it is determined as concave part；For image side surface, when R values be timing, be determined as concave part, when R values
When being negative, it is determined as convex surface part, the bumps that the method determines are identical with light focus decision procedure.
If 3. be defined as the 0~50% of effective radius without transfer point, optical axis I near zones on the lens surface, circumference
Near zone is defined as the 50~100% of effective radius.
Refering to Fig. 3, the lens image side surface of an example one only has the first transfer point on effective radius, then the firstth area
For optical axis I near zones, the secondth area is circumference near zone.The R values of this lens image side surface judge the neighbouring areas of optical axis I for just
Domain has a concave part；The face shape of circumference near zone is different with the inside region radially close to the region.That is, near circumference
Region is different with the face shape of optical axis I near zones；The circumference near zone system has a convex surface part.
Refering to Fig. 4, the lens object side surface of an example two has first and second transfer point on effective radius, then and the
One area is optical axis I near zones, and third area is circumference near zone.The R values of this lens object side are judged near optical axis for just
Region is convex surface part；Region (the secondth area) between first transfer point and the second transfer point has a concave part, circumference near zone
(third area) has a convex surface part.
Refering to Fig. 5, the lens object side surface of an example three on effective radius without transfer point, at this time with effective radius
0%~50% is optical axis I near zones, and 50%~100% is circumference near zone.Since the R values of optical axis I near zones are
Just, so object side has a convex surface part in optical axis I near zones；And nothing turns between circumference near zone and optical axis I near zones
It changes a little, therefore circumference near zone has a convex surface part.
Refering to Fig. 6 and Fig. 8, one of optical imaging lens 10 of the present invention first embodiment, from object side to image side along an optical axis I
One first lens 3, an aperture 2, one second lens 4, a third lens 5, one the 4th lens 6, one the 5th lens 7 are sequentially included,
An and optical filter 9.When the light sent out by an object to be captured enter the optical imaging lens 10, and via first lens 3,
After the aperture 2, second lens 4, the third lens 5, the 4th lens 6, the 5th lens 7 and the optical filter 9, meeting exists
One imaging surface 100 (Image Plane) forms an image.The optical filter 9 is infrared filter (IR Cut Filter), is used
In preventing the infrared transmitting in light image quality is influenced to the imaging surface 100.Supplementary explanation, object side is directed towards this
The side of object to be captured, and image side is directed towards the side of the imaging surface 100.
Wherein, first lens 3, second lens 4, the third lens 5, the 4th lens 6, the 5th lens 7 and should
Optical filter 9 is all respectively provided with one towards object side and makes object side 31,41,51,61,71,91 and a direction that imaging light passes through
Image side and the image side surface 32,42,52,62,72,92 for passing through imaging light.Wherein, such object side 31,41,51,61,71 with
Such image side surface 32,42,52,62,72 is all aspherical.
In addition, in order to meet the light-weighted demand of product, which is all to have refractive index
And all it is made by plastic material, but the material of first lens 3, second lens 4, the 4th lens 6, the 5th lens 7
Still it is not limited system.
First lens 3 have negative refractive index.The object side 31 of first lens 3 is a convex surface, and is located at one
The convex surface part 311 and one of optical axis I near zones is located at the convex surface part 312 of circumference near zone, the image side surface of first lens 3
32 be a concave surface, and the concave part 321 and one for being located at optical axis I near zones with one is located at the concave part of circumference near zone
322。
Second lens 4 have positive refractive index.The object side 41 of second lens 4 is a convex surface, and is located at one
The convex surface part 411 and one of optical axis I near zones is located at the convex surface part 412 of circumference near zone, the image side surface of second lens 4
42 be a convex surface, and is located at the convex surface part 422 of circumference near zone in the convex surface parts 421 and one of optical axis I near zones with one.
The third lens 5 have negative refractive index, and the object side 51 of the third lens 5 is a concave surface, and be located at one
The concave part 511 and one of optical axis I near zones is located at the concave part 512 of circumference near zone, the image side surface of the third lens 5
52 have the convex surface part 522 that a concave part 521 and one for being located at optical axis I near zones is located at circumference near zone.
4th lens 6 have positive refractive index.The object side 61 of 4th lens 6 is a concave surface, and is located at one
The concave part 611 and one of optical axis I near zones is located at the concave part 612 of circumference near zone, the image side surface of the 4th lens 6
62 be a convex surface, and the convex surface part 621 and one for being located at optical axis I near zones with one is located at the convex surface part of circumference near zone
622。
5th lens 7 have negative refractive index.The object side 71 of 5th lens 7 has one to be located at optical axis I areas nearby
The convex surface part 711 and one in domain is located at the concave part 712 of circumference near zone, and the image side surface 72 of the 5th lens 7 has one
It is located at the convex surface part 722 of circumference near zone in the concave part 721 and one of optical axis near zone.
In the present first embodiment, only above-mentioned first lens, 3 to the 5th lens 7 have refractive index.
Other detailed optical data of the first embodiment as shown in figure 8, and the first embodiment total system focal length
(effective focal length, abbreviation EFL) be 2.3899mm, half angle of view (half field of view, referred to as
HFOV it is) 42.9762 °, f-number (Fno) is 2.2, system length 4.135mm.Wherein, which refers to by this
The object side 31 of first lens 3 to the imaging surface 100 on optical axis I between distance.
In addition, first lens 3, second lens 4, the third lens 5, the 4th lens 6 and the 5th lens 7
Object side 31,41,51,61,71 and image side surface 32,42,52,62,72, ten faces are aspherical, and such aspherical altogether
It is to be defined according to following equation：
Wherein：
Y：The distance of point and optical axis I in aspheric curve；
Z：Aspherical depth is (apart from the point that optical axis I is Y on aspherical, with being tangential on cutting for vertex on aspherical optical axis I
Face, vertical range between the two)；
R:The radius of curvature of lens surface；
K：Conical surface coefficient (conic constant)；
a2i：2i rank asphericity coefficients.
The object side 31 of first lens 3 is to every asphericity coefficient of the image side surface 72 in formula (1) of the 5th lens 7
As shown in Figure 5.Wherein, in Fig. 9 field number 31 represent its for the first lens 3 object side 31 asphericity coefficient, other words
The rest may be inferred for section.
In addition, relationship such as Figure 30 and Figure 31 institutes in the optical imaging lens 10 of the first embodiment between each important parameter
Show.
Wherein,
T1 is the thickness of the first lens 3 on optical axis I；
T2 is the thickness of the second lens 4 on optical axis I；
T3 is the thickness of the third lens 5 on optical axis I；
T4 is thickness of the 4th lens 6 on optical axis I；
T5 is thickness of the 5th lens 7 on optical axis I；
The air gaps of the G12 between first lens 3 and second lens 4 on optical axis I；
The air gaps of the G23 between second lens 4 and the third lens 5 on optical axis I；
The air gaps of the G34 between 5 and the 4th lens 6 of third lens on optical axis I；
The air gaps of the G45 between the 4th lens 6 and the 5th lens 7 on optical axis I；
Gaa be the five the air gap summations of 3 to the 5th lens 7 of the first lens on optical axis I, i.e. G12, G23,
The sum of G34, G45；
ALT is first lens 3, second lens 4, the third lens 5, the 4th lens 6 and the 5th lens 7 in light
Thickness summation on axis I, i.e. the sum of T1, T2, T3, T4, T5；
TTL is the object side 31 of first lens 3 to the distance of the imaging surface 100 on optical axis I；
BFL is the image side surface 72 of the 5th lens 7 to the distance of the imaging surface 100 on optical axis I；And
EFL is the system focal length of the optical imaging lens 10.
In addition, it re-defines：
The air gaps of the G5F between the 5th lens 7 and the optical filter 9 on optical axis I；
TF is the thickness of the optical filter 9 on optical axis I；
The air gaps of the GFP between the optical filter 9 and the imaging surface 100 on optical axis I；
F1 is the focal length of first lens 3；
F2 is the focal length of second lens 4；
F3 is the focal length of the third lens 5；
F4 is the focal length of the 4th lens 6；
F5 is the focal length of the 5th lens 7；
N1 is the refractive index of first lens 3；
N2 is the refractive index of second lens 4；
N3 is the refractive index of the third lens 5；
N4 is the refractive index of the 4th lens 6；
N5 is the refractive index of the 5th lens 7；
υ 1 is the Abbe number (Abbe number) of first lens 3, and Abbe number is alternatively referred to as abbe number；
υ 2 is the Abbe number of second lens 4；
υ 3 is the Abbe number of the third lens 5；
υ 4 is the Abbe number of the 4th lens 6；And
υ 5 is the Abbe number of the 5th lens 7.
Coordinate again refering to Fig. 7, the schema of (a) illustrates the longitudinal spherical aberration (longitudinal of the first embodiment
Spherical aberration), the schema of (b) and (c) then illustrates the first embodiment related arc on imaging surface 100 respectively
Swear the astigmatic image error (astigmatism aberration) in (sagittal) direction and the picture in meridian (tangential) direction
Aberration is dissipated, the schema of (d) then illustrates distortion aberration (distortion of the first embodiment on imaging surface 100
aberration).In the longitudinal spherical aberration pictorial image 7 (a) of this first embodiment, curve is all very close to simultaneously formed by each wavelength
It is close to centre, illustrate that the Off-axis-light of each wavelength different height is all concentrated near imaging point, by the song of each wavelength
The skewness magnitude level of line can be seen that the imaging point deviation of the Off-axis-light of different height is controlled in the range of ± 0.05mm, therefore this reality
The spherical aberration that example is obviously improved phase co-wavelength really is applied, the distance of wavelength to each other is also fairly close, and representative is not in addition, three kinds represent
The image space of co-wavelength light is quite concentrated, thus chromatic aberation is made also to be obviously improved.
In two astigmatic image errors of Fig. 7 (b) and 7 (c) diagram, three kinds represent focal length of the wavelength in entire field range
Variable quantity is fallen in ± 0.08mm, is illustrated the optical system of this first embodiment and can be effectively eliminated aberration.And the distortion of Fig. 7 (d)
In the range of aberration schema then shows that the distortion aberration of this first embodiment maintains ± 2.5%, illustrate this first embodiment
Distortion aberration has met the image quality requirement of optical system, illustrates this first embodiment accordingly compared to existing optical lens,
Under conditions of system length has foreshortened to 4.135mm, remain to provide preferable image quality, therefore this first embodiment can tieed up
Under the conditions of holding favorable optical performance, shorten lens length and expand shooting angle, to realize that the product being more thinned is set
Meter.
It is a second embodiment of optical imaging lens 10 of the present invention, with the first embodiment substantially phase refering to Figure 10
Seemingly, the parameter between only each optical data, asphericity coefficient and such lens 3,4,5,6,7 is more or less somewhat different.It needs herein
It is noted that in order to clearly illustrate drawing, the label of the concave part being identical with the first embodiment and convex surface part is omitted in Figure 10.
Its detailed optical data is as shown in figure 12, and the total system focal length of the second embodiment is 2.4315mm, partly
Visual angle (HFOV) is 42.5196 °, f-number (Fno) is 2.2, and system length is then 4.115mm.
As shown in figure 13, then the image side surface for the object side 31 of first lens 3 of the second embodiment to the 5th lens 7
72 every asphericity coefficient in formula (1).
In addition, relationship such as Figure 30 and Figure 31 institutes in the optical imaging lens 10 of the second embodiment between each important parameter
Show.
Cooperation refering to Figure 11, by the longitudinal spherical aberration of (a), (b), the astigmatic image error of (c) and (d) distortion aberration schema
It can be seen that this second embodiment can also maintain favorable optical performance.
Via above description, it can be seen that, which is compared to the advantages of first embodiment：Second reality
The system length for applying example is shorter than the system length of the first embodiment, and the image quality of the second embodiment also better than this first
The image quality of embodiment, finally the second embodiment is more easily fabricated than the first embodiment therefore yield is higher.
It is a 3rd embodiment of optical imaging lens 10 of the present invention, with the first embodiment substantially phase refering to Figure 14
Seemingly, the parameter between only each optical data, asphericity coefficient and such lens 3,4,5,6,7 is more or less somewhat different.It needs herein
It is noted that in order to clearly illustrate drawing, the label of the concave part being identical with the first embodiment and convex surface part is omitted in Figure 14.
Its detailed optical data is as shown in figure 16, and the total system focal length of this third embodiment is 2.3485mm, partly
Visual angle (HFOV) is 43.5747 °, f-number (Fno) is 2.2, and system length is then 4.342mm.
As shown in figure 17, then the image side surface for the object side 31 of first lens 3 of the 3rd embodiment to the 5th lens 7
72 every asphericity coefficient in formula (1).
In addition, relationship such as Figure 30 and Figure 31 institutes in the optical imaging lens 10 of the 3rd embodiment between each important parameter
Show.
Cooperation refering to Figure 15, by the longitudinal spherical aberration of (a), (b), the astigmatic image error of (c) and (d) distortion aberration schema
It can be seen that this third embodiment can also maintain favorable optical performance.
Via above description, it can be seen that, which is compared to the advantages of first embodiment：The third is real
The half angle of view for applying example is more than the half angle of view of the first embodiment, and the image quality of the 3rd embodiment is also better than first implementation
The image quality of example, finally the 3rd embodiment is more easily fabricated than the first embodiment therefore yield is higher.
It is a fourth embodiment of optical imaging lens 10 of the present invention, with the first embodiment substantially phase refering to Figure 18
Seemingly, the parameter between only each optical data, asphericity coefficient and such lens 3,4,5,6,7 is more or less somewhat different.It needs herein
It is noted that in order to clearly illustrate drawing, the label of the concave part being identical with the first embodiment and convex surface part is omitted in Figure 18.
Its detailed optical data is as shown in figure 20, and the total system focal length of this fourth embodiment is 2.516mm, is partly regarded
Angle (HFOV) is 41.7283 °, f-number (Fno) is 2.2, and system length is then 4.422mm.
As shown in figure 21, then the image side surface for the object side 31 of first lens 3 of the fourth embodiment to the 5th lens 7
72 every asphericity coefficient in formula (1).
In addition, relationship such as Figure 30 and Figure 31 institutes in the optical imaging lens 10 of the fourth embodiment between each important parameter
Show.
Cooperation refering to Figure 19, by the longitudinal spherical aberration of (a), (b), the astigmatic image error of (c) and (d) distortion aberration schema
It can be seen that this fourth embodiment can also maintain favorable optical performance.
Via above description, it can be seen that, which is compared to the advantages of first embodiment：4th is real
The image quality for applying example is also better than the image quality of the first embodiment, and the fourth embodiment is easy to make than the first embodiment
It is higher to make therefore yield.
It is one the 5th embodiment of optical imaging lens 10 of the present invention, with the first embodiment substantially phase refering to Figure 22
Seemingly, the parameter between only each optical data, asphericity coefficient and such lens 3,4,5,6,7 is more or less somewhat different and should
There is a convex surface part 513 and one for being located at optical axis I near zones to be located at circumference near zone for the object side 51 of third lens 5
Concave part 512.Herein it is noted that in order to clearly illustrate drawing, clipped is identical with the first embodiment in Figure 22
The label of concave part and convex surface part.
Its detailed optical data is as shown in figure 24, and the total system focal length of this fifth embodiment is 2.466mm, is partly regarded
Angle (HFOV) is 42.2699 °, f-number (Fno) is 2.2, and system length is then 4.386mm.
As shown in figure 25, then the image side surface for the object side 31 of first lens 3 of the 5th embodiment to the 5th lens 7
72 every asphericity coefficient in formula (1).
In addition, relationship such as Figure 30 and Figure 31 institutes in the optical imaging lens 10 of the 5th embodiment between each important parameter
Show.
Cooperation refering to Figure 23, by the longitudinal spherical aberration of (a), (b), the astigmatic image error of (c) and (d) distortion aberration schema
It can be seen that this fifth embodiment can also maintain favorable optical performance.
Via above description, it can be seen that, the 5th embodiment is compared to the advantages of first embodiment：5th is real
The image quality for applying example is also better than the image quality of the first embodiment, and the 5th embodiment is easy to make than the first embodiment
It is higher to make therefore yield.
It is a sixth embodiment of optical imaging lens 10 of the present invention, with the first embodiment substantially phase refering to Figure 26
Seemingly, the parameter between only each optical data, asphericity coefficient and such lens 3,4,5,6,7 is more or less somewhat different and should
There is the image side surface 52 of third lens 5 concave part 521, one for being located at optical axis I near zones to be located at circumference near zone
Convex surface part 524 of the concave part 523 and one between such concave part 521,523.Herein it is noted that in order to clearly illustrate
Drawing, the concave part and the label of convex surface part that clipped is identical with the first embodiment in Figure 26.
Its detailed optical data is as shown in figure 28, and the total system focal length of this sixth embodiment is 2.517mm, is partly regarded
Angle (HFOV) is 41.6194 °, f-number (Fno) is 2.2, and system length is then 4.365mm.
As shown in figure 29, then the image side surface for the object side 31 of first lens 3 of the sixth embodiment to the 5th lens 7
72 every asphericity coefficient in formula (1).
In addition, relationship such as Figure 30 and Figure 31 institutes in the optical imaging lens 10 of the sixth embodiment between each important parameter
Show.
Cooperation refering to Figure 27, by the longitudinal spherical aberration of (a), (b), the astigmatic image error of (c) and (d) distortion aberration schema
It can be seen that this sixth embodiment can also maintain favorable optical performance.
Via above description, it can be seen that, which is compared to the advantages of first embodiment：6th is real
The image quality for applying example is also better than the image quality of the first embodiment, and the sixth embodiment is easy to make than the first embodiment
It is higher to make therefore yield.
Coordinate again refering to Figure 30 and Figure 31, be the tabular drawing of every optical parameter of above-mentioned six embodiments, work as the present invention
When the relational expression between every optical parameter in optical imaging lens 10 meets following condition formulae, in the situation that system length shortens
Under, preferable optical property performance is still suffered from, when making the present invention applied to related portable electronic devices, can be made thinner
The product of type：
(1) it in order to reach the system length for shortening the optical imaging lens 10, forms and designs in the optical imaging lens 10
On the air gap between lens thickness and lens is reduced as far as possible, but in view of the different degree of hardly possible of lens combination, the sky between lens
The degree numerical definiteness small compared with the degree that lens thickness can reduce, therefore can satisfying the following conditional expression that gas gap can usually reduce,
Optical imaging system can have advantageous configurations.(G12+G45)/T3≧1.5、T3/G12≦1.1、T2/G23≦20、T4/G23≦20、
T5/G23≤20, (G34+G45)/T1≤0.4, ALT/G23≤60, T1/G45≤10, preferably, 1.5≤(G12+G45)/T3
≦5、0.3≦T3/G12≦1、0.8≦T2/G23≦3、1.5≦T4/G23≦3.2、0.5≦T5/G23≦1.7、0.5≦(G34
+G45)/T1≦1.7、4.0≦ALT/G23≦10.0、0.6≦T1/G45≦3.0。
(2) with aforementioned, although the degree that lens thickness can reduce is big compared to the air gap, the degree reduced still needs to
There is a limiting value to meet appropriate ratio, otherwise make and be not easy, if therefore can satisfy the following conditional expression, the optical imaging lens 10
There can be preferably imaging effect in the case where length is shorter.ALT/Gaa≧1、(G12+G34)/T3≦20、(G12+G45)/T5
≤ 7, preferably, 1.0≤ALT/Gaa≤3.0,1.5≤(G12+G34)/T3≤4.0,1.0≤(G12+G45)/T5≤3.5.
(3) in order to achieve the effect that the system length of the optical imaging lens 10 shortens, which has
Effect focal length EFL is also designed to smaller, while considers the difficult different degree of lens combination, and it is one appropriate that the air gap ratio between lens need to have
Range, if can satisfy the following conditional expression, this optical imaging lens 10 has preferable effect.(G12+G23)/EFL≦3、EFL/G23
≤ 100, preferably, 0.1≤(G12+G23)/EFL≤0.5,5.0≤EFL/G23≤11.0.
(4) with aforementioned, it is to reach a kind of side that the system length of the optical imaging lens 10 shortens that lens thickness, which becomes smaller,
Method, but the 5th lens 7 because optics effective diameter it is larger, the degree that lens thickness T5 can reduce is also therefore smaller, if can meet
The following conditions formula, this optical imaging lens 10 have preferable effect.T1/T5≤7.0, preferably, 0.5≤T1/T5≤1.2.
(5) since the thickness T3 of the third lens 5 is relatively thin, the sky between second lens 4 and the third lens 5
Gas clearance G 23 is larger relative to other the air gaps, if satisfying the following conditional expression, this optical imaging lens 10 has advantageous configurations.
Gaa/G23≤30, preferably, 2.5≤Gaa/G23≤5.0.
However, in view of the unpredictability of Optical System Design, under the framework of the present invention, meet above-mentioned condition formula
Can it is preferable that optical imaging lens of the present invention 10 length shorten, f-number reduce, field angle increase, image quality promotion,
Or the shortcomings that assembling Yield lmproved and improving prior art.
Conclude above-mentioned, optical imaging lens 10 of the present invention can obtain the effect of following and advantage, therefore can reach the present invention's
Purpose：
First, the image side surface 32 of first lens 3 have one circumference near zone concave part 322, collocation be located at should
Aperture 2 between first lens 3 and second lens 4 helps to expand the visual field of the optical imaging lens 10.
2nd, by the convex surface part 412 and 42 circumference of image side surface of the 41 circumference near zone of object side of second lens 4
The convex surface part 422 of near zone can effectively focus on light.By the 4th lens 6 the 62 circumference near zone of image side surface it is convex
Face 622 and the 5th lens 7 the 71 circumference near zone of object side concave part 712, be collocated with each other promoted the optics into
As the image quality of camera lens 10.Third lens 5 then advantageously reduce manufacture cost for plastic material and mitigate weight.
3rd, the control of the invention by relevant design parameter has whole system and preferably eliminates aberration ability, such as
Eliminate the ability of spherical aberration, then coordinate such 3,4,5,6,7 object side 31,41,51,61,71 of lens or image side surface 32,42,52,
62nd, 72 concaveconvex shape design and arrangement, making the optical imaging lens 10, still having can under conditions of system length is shortened
Effectively overcome the optical property of chromatic aberation, and provide preferable image quality.
4th, by the explanation of aforementioned six embodiments, the design of optical imaging lens 10 of the present invention, such embodiment are shown
System length can all shorten to less than 4.5mm hereinafter, compared to existing optical imaging lens, using the camera lens of the present invention
The product being more thinned can be produced, makes the present invention that there is the economic benefit to accord with the demands of the market.
Refering to Figure 32, a first embodiment of the electronic device 1 for the aforementioned optical imaging lens 10 of application, electronics dress
It puts 1 and includes a casing 11 and an image module 12 in the casing 11.Only it is to illustrate the electronics by taking mobile phone as an example herein
Device 1, but the pattern of the electronic device 1 is not limited.
The image module 12 includes the foregoing optical imaging lens 10, one and is used for for the optical imaging lens 10
The lens barrel 21, one of setting is used to be set to the optical imaging lens 10 for the module rear seat unit 120 and one of the lens barrel 21 setting
The image sensor 130 of image side.The imaging surface 100 is formed at the image sensor 130 (see Fig. 2).
There is the module rear seat unit 120 a camera lens back seat 121 and one to be set to the camera lens back seat 121 and image biography
Image sensor back seat 122 between sensor 130.Wherein, which coaxially set along an axis II with the camera lens back seat 121
It puts, and the lens barrel 21 is set to 121 inside of camera lens back seat.
Refering to Figure 33, a second embodiment of the electronic device 1 to apply the aforementioned optical imaging lens 10, second reality
Apply the electronic device 1 of example and the first embodiment main difference is that：The module rear seat unit 120 is voice coil motor
(VCM) pattern.The camera lens back seat 121 has first pedestal for fitting and being set along an axis III with 21 outside of lens barrel
123rd, one it is arranged on first pedestal along the axis III and around the second pedestal 124, one of the 123 outside setting of the first pedestal
Coil 125 and one between 123 outsides and 124 inside of the second pedestal is arranged on 125 outside of coil and second pedestal
Magnet assembly 126 between 124 insides.
First pedestal 123 of the camera lens back seat 121 can with the lens barrel 21 and the optics being arranged in the lens barrel 21 into
As camera lens 10 is moved along the axis III.The image sensor back seat 122 then fits with second pedestal 124.Wherein, the optical filtering
Piece 9 is then provided in the image sensor back seat 122.The other assemblies structure of the second embodiment of the electronic device 1 is then with
The electronic device 1 of one embodiment is similar, and details are not described herein.
By the optical imaging lens 10 are installed, since the system length of the optical imaging lens 10 can effectively shorten, make
The first embodiment of the electronic device 1 and the thickness of second embodiment relative decrease and then can make the product being more thinned,
And remain able to provide good optical property and image quality, thereby, the electronic device 1 of the present invention is made to be reduced in addition to having
Outside the economic benefit of casing raw material dosage, moreover it is possible to meet light and short product design trend and consumption demand.
Although specifically showing and describing the present invention with reference to preferred embodiment, those skilled in the art should be bright
In vain, it is not departing from the spirit and scope of the present invention that the appended claims are limited, it in the form and details can be right
The present invention makes a variety of changes, and is protection scope of the present invention.
Claims (15)
1. a kind of optical imaging lens, it is characterised in that：From object side to image side along an optical axis sequentially comprising one first lens, a light
Circle, one second lens, a third lens, one the 4th lens and one the 5th lens, and first lens to the 5th lens all have
There is refractive index, and respectively include one towards object side and make object side that imaging light passes through and one towards image side and make imaging light
By image side surface；
The image side surface of first lens has a concave part for being located at circumference near zone；
The object side of second lens has a convex surface part for being located at circumference near zone, the image side mask of second lens
There is a convex surface part for being located at circumference near zone；
The third lens are plastic material；
The object side of 4th lens has a concave part for being located at circumference near zone, the image side mask of the 4th lens
There is a convex surface part for being located at circumference near zone；And
The object side of 5th lens has a concave part for being located at circumference near zone；
The Abbe number of first lens is less than the Abbe number of the 5th lens, which has the saturating of refractive index
Mirror only has five, and the air gap between first lens and second lens on optical axis is G12, the 4th lens with this
The air gap between five lens on optical axis is G45, which is T3, and meets (G12+
G45)/T3≤1.5 and T3/G12≤1.1.
2. a kind of optical imaging lens according to claim 1, it is characterised in that：Wherein, second lens and the third
The air gap between lens on optical axis is G23, and the system focal length of the optical imaging lens is EFL, and also meet following item
Part formula：(G12+G23)/EFL≦3.
3. a kind of optical imaging lens according to claim 2, it is characterised in that：Wherein, second lens are on optical axis
Thickness for T2, and also meet following condition formulae：T2/G23≦20.
4. a kind of optical imaging lens according to claim 1, it is characterised in that：Wherein, first lens are on optical axis
Thickness for T1, thickness of the 5th lens on optical axis is T5, and also meets following condition formulae：T1/T5≦7.0.
5. a kind of optical imaging lens according to claim 4, it is characterised in that：Wherein, the optical imaging lens is
System focal length is EFL, and the air gap between second lens and the third lens on optical axis is G23, and also meet following item
Part formula：EFL/G23≦100.
6. a kind of optical imaging lens according to claim 1, it is characterised in that：Wherein, the 4th lens are on optical axis
Thickness for T4, the air gap between second lens and the third lens on optical axis is G23, and also meet following condition
Formula：T4/G23≦20.
7. a kind of optical imaging lens according to claim 6, it is characterised in that：Wherein, first lens, this second thoroughly
Mirror, the third lens, the thickness summation of the 4th lens and the 5th lens on optical axis are ALT, first lens to this
Four the air gap summations of five lens on optical axis are Gaa, and also meet following condition formulae：ALT/Gaa≧1.
8. a kind of optical imaging lens according to claim 1, it is characterised in that：Wherein, the 5th lens are on optical axis
Thickness for T5, the air gap between second lens and the third lens on optical axis is G23, and also meet following condition
Formula：T5/G23≦20.
9. a kind of optical imaging lens according to claim 8, it is characterised in that：Wherein, the third lens and the 4th
The air gap between lens on optical axis is G34, and also meet following condition formulae：(G12+G34)/T3≦20.
10. a kind of optical imaging lens according to claim 1, it is characterised in that：Wherein, first lens are to the 5th
Four the air gap summations of the lens on optical axis be Gaa, the air between second lens and the third lens on optical axis
Gap is G23, and also meets following condition formulae：Gaa/G23≦30.
11. a kind of optical imaging lens according to claim 10, it is characterised in that：Wherein, first lens are in optical axis
On thickness for T1, the air gap between the third lens and the 4th lens on optical axis is G34, and also meet following item
Part formula：(G34+G45)/T1≧0.4.
12. a kind of optical imaging lens according to claim 1, it is characterised in that：Wherein, the 5th lens are on optical axis
Thickness for T5, and also meet following condition formulae：(G12+G45)/T5≦7.
13. a kind of optical imaging lens according to claim 12, it is characterised in that：Wherein, first lens, this second
Lens, the third lens, the thickness summation of the 4th lens and the 5th lens on optical axis are ALT, and second lens are with being somebody's turn to do
The air gap between third lens on optical axis is G23, and also meet following condition formulae：ALT/G23≦60.
14. a kind of optical imaging lens according to claim 1, it is characterised in that：Wherein, first lens are on optical axis
Thickness for T1, and also meet following condition formulae：T1/G45≦10.
15. a kind of electronic device, it is characterised in that：Comprising：
One casing；And an image module, it is mounted in the casing, and including appointing just like in claim 1 to claim 14
Optical imaging lens described in one, one are used for the lens barrel for optical imaging lens setting, one are used for for lens barrel setting
Module rear seat unit and one be set to the optical imaging lens image side image sensor.
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| CN106970456B (en) * | 2017-01-20 | 2020-01-14 | 玉晶光电(厦门)有限公司 | Optical lens group |
| CN109425953B (en) * | 2017-08-22 | 2020-12-29 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
| JP6431588B1 (en) * | 2017-10-19 | 2018-11-28 | エーエーシーアコースティックテクノロジーズ（シンセン）カンパニーリミテッドＡＡＣ Ａｃｏｕｓｔｉｃ Ｔｅｃｈｎｏｌｏｇｉｅｓ（Ｓｈｅｎｚｈｅｎ）Ｃｏ．，Ｌｔｄ | Imaging lens |
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| CN103309015A (en) * | 2012-03-08 | 2013-09-18 | 大立光电股份有限公司 | Monofocal optical lens system |
| CN103376535A (en) * | 2012-04-19 | 2013-10-30 | 大立光电股份有限公司 | Optical Imaging System Group |
| CN103424847A (en) * | 2012-05-18 | 2013-12-04 | 大立光电股份有限公司 | Image lens system group |
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| CN103477264A (en) * | 2011-03-30 | 2013-12-25 | 富士胶片株式会社 | Image pickup lens and image pickup device |
| CN103309015A (en) * | 2012-03-08 | 2013-09-18 | 大立光电股份有限公司 | Monofocal optical lens system |
| CN103376535A (en) * | 2012-04-19 | 2013-10-30 | 大立光电股份有限公司 | Optical Imaging System Group |
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