CN103969806A - Optical imaging lens and electronic device utilizing same - Google Patents
Optical imaging lens and electronic device utilizing same Download PDFInfo
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- CN103969806A CN103969806A CN201310712680.5A CN201310712680A CN103969806A CN 103969806 A CN103969806 A CN 103969806A CN 201310712680 A CN201310712680 A CN 201310712680A CN 103969806 A CN103969806 A CN 103969806A
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Abstract
The invention relates to an optical imaging lens and an electronic device utilizing the same. The optical imaging lens comprises six lenses. An image side of the first lens is provided with a concave surface portion in the vicinity of the circumference, an object side of the second lens is provided with a convex surface portion in the vicinity of the circumference, an image side of the third lens is provided with a convex surface portion in the vicinity of the circumference, the fourth lens is provided with positive refractive rate, an object side of the fifth lens is provided with a concave surface portion in the vicinity of the circumference, and an image side of the sixth lens is provided with a convex surface portion in the vicinity of the circumference. The optical imaging lens is provided with the six lenses which are lenses with refractive rate. The electronic device comprises a casing and an imaging module, wherein the imaging module comprises the optical imaging lens, a lens cone, a module holder unit and an image sensor. By controlling arrangement of the convex surfaces and the concave surfaces of the lenses, imaging angle can be enlarged, and the optical imaging lens has good optical property.
Description
Technical field
The present invention is haply about a kind of optical imaging lens, with the electronic installation that comprises this optical imaging lens.Particularly, the present invention refers to that one has the optical imaging lens of shorter lens length especially, and applies the electronic installation of this optical imaging lens.
Background technology
The application of miniature photography device is expanded to association areas such as game machine, driving recorder or reversing cameras by mobile phone gradually, such device generally has sizable requirement for the shooting angle of wide-angle, therefore improve for existing optical lens, need to expand as far as possible shooting angle.
US Patent No. 8385006, US8390940 have disclosed a kind of by the optical lens that six-element lens formed, but only approximately 30～38 degree of the angle of half field-of view of these designs are obviously difficult to meet above-mentioned demand.
Summary of the invention
So the present invention can provide a kind of lightweight, low manufacturing cost, expansion angle of half field-of view and the optical imaging lens of high resolving power and high imaging quality can be provided.The present invention's six chip imaging lens, from thing side to picture side, sequentially arrange to have first lens, the second lens, the 3rd lens, aperture, the 4th lens, the 5th lens and the 6th lens on optical axis.
The invention provides a kind of optical imaging lens, from thing side to sequentially comprising a first lens as side along an optical axis, it has a concave surface portion that is positioned at circumference near zone as side, one second lens, its thing side has a convex surface part that is positioned at circumference near zone, one the 3rd lens, it has a convex surface part that is positioned at circumference near zone as side, one aperture, one has the 4th lens of positive refractive index, one the 5th lens, its thing side has a concave surface portion that is positioned at circumference near zone, and one the 6th lens, it has a convex surface part that is positioned at circumference near zone as side, wherein, the lens that this optical imaging lens has refractive index only have six.
In optical imaging lens of the present invention, between first lens and the second lens on optical axis the width of clearance be between AG12, the second lens and the 3rd lens on optical axis the width of clearance be between AG23, the 3rd lens and the 4th lens on optical axis the width of clearance be between AG34, the 4th lens and the 5th lens on optical axis the width of clearance be between AG45, the 5th lens and the 6th lens on optical axis the width of clearance be AG56, so the sum total of five clearances on optical axis is AAG between first lens to the six lens.
In optical imaging lens of the present invention, the center thickness of first lens on optical axis is that T1, the center thickness of the second lens on optical axis are that T2, the center thickness of the 3rd lens on optical axis are that T3, the center thickness of the 4th lens on optical axis are that T4, the center thickness of the 5th lens on optical axis are T5, the center thickness of the 6th lens on optical axis is T6, so first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens center thickness sum total on optical axis is ALT.
In optical imaging lens of the present invention, meet the relation of 1.05≤T4/AG23.
In optical imaging lens of the present invention, meet the relation of 2.0≤AG12/AG34.
In optical imaging lens of the present invention, meet the relation of 3.3≤AAG/T6.
In optical imaging lens of the present invention, meet the relation of AG23/T1≤1.5.
In optical imaging lens of the present invention, meet the relation of AG23/T2≤2.3.
In optical imaging lens of the present invention, meet the relation of T6/AG56≤15.0.
In optical imaging lens of the present invention, meet the relation of T6/AG45≤6.0.
In optical imaging lens of the present invention, meet the relation of 6.0≤AAG/AG34.
In optical imaging lens of the present invention, meet the relation of T1/AG45≤4.0.
In optical imaging lens of the present invention, meet the relation of 1.1≤AG12/T6.
In optical imaging lens of the present invention, meet the relation of T3/AG56≤18.0.
In optical imaging lens of the present invention, meet the relation of 1.4≤AG23/AG34.
In optical imaging lens of the present invention, meet the relation of AG34/AG56≤15.0.
In optical imaging lens of the present invention, meet the relation of 3.5≤AAG/T3.
In optical imaging lens of the present invention, meet the relation of T1/AG56≤7.0.
In optical imaging lens of the present invention, meet the relation of ALT/AG45≤25.0.
Further, the present invention provides again a kind of electronic installation of optical imaging lens of application of aforementioned.Electronic installation of the present invention, comprises casing and is arranged on the image module in casing.Image module comprises: meet the optical imaging lens of aforementioned techniques feature, the lens barrel for arranging for optical imaging lens, the module back seat unit for arranging for lens barrel, the substrate for arranging for this module back seat unit, and be arranged at this substrate and be positioned at an image sensor of one of this optical imaging lens picture side.
The present invention is by adopting technique scheme, and compared with prior art, tool has the following advantages:
According to the relation between each important parameter in above each optical imaging lens, can assist deviser to design to possess favorable optical performance, entire length effectively shortens and technical feasible optical imaging lens.The present invention sees through the concave-convex curved surface arrangement of controlling each lens, can effectively expand shooting angle, possesses good optical property simultaneously.
Brief description of the drawings
Fig. 1 illustrates the schematic diagram of the first embodiment of the present invention's six chip optical imaging lens.
Fig. 2 A illustrates the longitudinal spherical aberration of the first embodiment on imaging surface.
Fig. 2 B illustrates the astigmatic image error of the first embodiment in sagitta of arc direction.
Fig. 2 C illustrates the astigmatic image error of the first embodiment at meridian direction.
Fig. 2 D illustrates the distortion aberration of the first embodiment.
Fig. 3 illustrates the schematic diagram of the second embodiment of the present invention's six chip optical imaging lens.
Fig. 4 A illustrates the longitudinal spherical aberration of the second embodiment on imaging surface.
Fig. 4 B illustrates the astigmatic image error of the second embodiment in sagitta of arc direction.
Fig. 4 C illustrates the astigmatic image error of the second embodiment at meridian direction.
Fig. 4 D illustrates the distortion aberration of the second embodiment.
Fig. 5 illustrates the schematic diagram of the 3rd embodiment of the present invention's six chip optical imaging lens.
Fig. 6 A illustrates the longitudinal spherical aberration of the 3rd embodiment on imaging surface.
Fig. 6 B illustrates the astigmatic image error of the 3rd embodiment in sagitta of arc direction.
Fig. 6 C illustrates the astigmatic image error of the 3rd embodiment at meridian direction.
Fig. 6 D illustrates the distortion aberration of the 3rd embodiment.
Fig. 7 illustrates the schematic diagram of the 4th embodiment of the present invention's six chip optical imaging lens.
Fig. 8 A illustrates the longitudinal spherical aberration of the 4th embodiment on imaging surface.
Fig. 8 B illustrates the astigmatic image error of the 4th embodiment in sagitta of arc direction.
Fig. 8 C illustrates the astigmatic image error of the 4th embodiment at meridian direction.
Fig. 8 D illustrates the distortion aberration of the 4th embodiment.
Fig. 9 illustrates the schematic diagram of the 5th embodiment of the present invention's six chip optical imaging lens.
Figure 10 A illustrates the longitudinal spherical aberration of the 5th embodiment on imaging surface.
Figure 10 B illustrates the astigmatic image error of the 5th embodiment in sagitta of arc direction.
Figure 10 C illustrates the astigmatic image error of the 5th embodiment at meridian direction.
Figure 10 D illustrates the distortion aberration of the 5th embodiment.
Figure 11 illustrates the schematic diagram of the 6th embodiment of the present invention's six chip optical imaging lens.
Figure 12 A illustrates the longitudinal spherical aberration of the 6th embodiment on imaging surface.
Figure 12 B illustrates the astigmatic image error of the 6th embodiment in sagitta of arc direction.
Figure 12 C illustrates the astigmatic image error of the 6th embodiment at meridian direction.
Figure 12 D illustrates the distortion aberration of the 6th embodiment.
Figure 13 illustrates the schematic diagram of the 7th embodiment of the present invention's six chip optical imaging lens.
Figure 14 A illustrates the longitudinal spherical aberration of the 7th embodiment on imaging surface.
Figure 14 B illustrates the astigmatic image error of the 7th embodiment in sagitta of arc direction.
Figure 14 C illustrates the astigmatic image error of the 7th embodiment at meridian direction.
Figure 14 D illustrates the distortion aberration of the 7th embodiment.
Figure 15 illustrates the schematic diagram of optical imaging lens curvature shapes of the present invention.
Figure 16 illustrates the schematic diagram of the first preferred embodiment of the portable electronic devices of application the present invention six chip optical imaging lens.
Figure 17 illustrates the schematic diagram of the second preferred embodiment of the portable electronic devices of application the present invention six chip optical imaging lens.
Figure 18 represents the optical data that the first embodiment is detailed
Figure 19 represents the aspherical surface data that the first embodiment is detailed.
Figure 20 represents the optical data that the second embodiment is detailed.
Figure 21 represents the aspherical surface data that the second embodiment is detailed.
Figure 22 represents the detailed optical data of the 3rd embodiment.
Figure 23 represents the detailed aspherical surface data of the 3rd embodiment.
Figure 24 represents the detailed optical data of the 4th embodiment.
Figure 25 represents the detailed aspherical surface data of the 4th embodiment.
Figure 26 represents the detailed optical data of the 5th embodiment.
Figure 27 represents the detailed aspherical surface data of the 5th embodiment.
Figure 28 represents the detailed optical data of the 6th embodiment.
Figure 29 represents the detailed aspherical surface data of the 6th embodiment.
Figure 30 represents the detailed optical data of the 7th embodiment.
Figure 31 represents the detailed aspherical surface data of the 7th embodiment.
Figure 32 represents the important parameter of each embodiment.
[symbol description]
1 optical imaging lens
2 thing sides
3 picture sides
4 optical axises
10 first lens
11 first thing sides
12 first picture sides
13 convex surface part
14 convex surface part
16 concave surface portions
17 concave surface portions
20 second lens
21 second thing sides
22 second picture sides
23 convex surface part
24 convex surface part
26 concave surface portions
27 concave surface portions
30 the 3rd lens
31 the 3rd thing sides
32 the 3rd picture sides
33 convex surface part
34 convex surface part
36 convex surface part
37 convex surface part
40 the 4th lens
41 the 4th thing sides
42 the 4th picture sides
43 convex surface part
44 convex surface part
50 the 5th lens
51 the 5th thing sides
52 the 5th picture sides
53 concave surface portions
54 concave surface portions
56 convex surface part
57 convex surface part
60 the 6th lens
61 the 6th thing sides
62 the 6th picture sides
63 convex surface part
63 ' convex surface part
64 convex surface part
64 ' concave surface portion
66 concave surface portions
67 convex surface part
70 image sensors
71 imaging surfaces
72 optical filters
80 apertures
100 portable electronic devices
110 casings
120 image modules
130 lens barrels
140 module back seat unit
141 camera lens back seats
142 first pedestals
143 second pedestals
144 coils
145 magnet assemblies
146 image sensor back seats
172 substrates
200 portable electronic devices
I optical axis
A～C region
E extension
Lc chief ray
Lm marginal ray
T1～T6 lens center thickness
Embodiment
Before starting to describe the present invention in detail, be first noted that in the present invention is graphic, similarly assembly is to represent with identical numbering.Wherein, this section of instructions sayed it " lens have positive refractive index (or negative refractive index) ", refers to that described lens have positive refractive index (or negative refractive index) at optical axis near zone." the thing side (or picture side) of lens has the convex surface part (or concave surface portion) that is positioned at certain region ", refer to the exterior lateral area of this region compared to this region of radially upper next-door neighbour, towards more " outwardly convex " (or " the caving inward ") of direction that is parallel to optical axis.Taking Figure 15 as example, wherein I be optical axis and this lens be taking this optical axis I as axis of symmetry radially symmetrical, the thing side of these lens has convex surface part in a-quadrant, B region has concave surface portion and C region has convex surface part, reason is the exterior lateral area (be B region) of a-quadrant compared to this region of radially upper next-door neighbour, towards the more outwardly convex of direction that is parallel to optical axis, B region more caves inward compared to C region, and C region compared to E region also outwardly convex more in like manner." circumference near zone ", refers to the circumference near zone that is positioned on lens the curved surface only passing through for imaging light, that is C region in figure, and wherein, imaging light has comprised chief ray Lc(chief ray) and marginal ray Lm(marginal ray)." optical axis near zone " refers to the optical axis near zone of this curved surface only passing through for imaging light, that is a-quadrant in Figure 15.In addition, each lens also comprise an extension E, use for this entirety of lens package in optical imaging lens, and desirable imaging light can't pass through this extension E, but structure and the shape of this extension E are not limited to this, below embodiment for asking the graphic extension that succinctly all omitted.
As shown in Figure 1, optical imaging lens 1 of the present invention, from placing the thing side 2 of object (not shown) to the picture side 3 of imaging, along optical axis (optical axis) 4, sequentially include first lens 10, the second lens 20, the 3rd lens 30, an aperture, the 4th lens 40, the 5th lens 50, the 6th lens 60, optical filter 72 and imaging surface (image plane) 71.In general, first lens 10, the second lens 20, the 3rd lens 30, the 5th lens 50 and the 6th lens 60 can be made by transparent plastic material, and the 4th lens 40 are formed by glass, but the present invention is not as limit.In optical imaging lens 1 of the present invention, the eyeglass with refractive index only has six altogether.Optical axis 4 is the optical axis of whole optical imaging lens 1, so the optical axis of the optical axis of each lens and optical imaging lens 1 is identical.
In addition, optical imaging lens 1 also comprises aperture (aperture stop) 80, and is arranged at suitable position.In Fig. 1, aperture 80 is arranged between the 3rd lens 30 and the 4th lens 40.When by be positioned at thing side 2 wait taking light (not shown) that thing (not shown) sends while entering optical imaging lens 1 of the present invention, can be via after first lens 10, the second lens 20, the 3rd lens 30, aperture 80, the 4th lens 40, the 5th lens 50, the 6th lens 60 and optical filter 72, can on the imaging surface 71 as side 3, focus on and form image clearly.
In various embodiments of the present invention, the optical filter 72 of selectivity setting can also be the filter of the various proper function of tool, and light that can filtering specific wavelength, is placed between the 6th lens 60 and imaging surface 71.The material of optical filter 72 is glass.
Each lens in optical imaging lens 1 of the present invention, all have respectively towards the thing side of thing side 2, with the picture side towards picture side 3.In addition, each lens in optical imaging lens 1 of the present invention, also all have approach the optical axis near zone of optical axis 4, with away from the circumference near zone of optical axis 4.For example, first lens 10 has the first thing side 11 and the first picture side 12; The second lens 20 have the second thing side 21 and the second picture side 22; The 3rd lens 30 have the 3rd thing side 31 and the 3rd picture side 32; The 4th lens 40 have the 4th thing side 41 and the 4th picture side 42; The 5th lens 50 have the 5th thing side 51 and the 5th picture side 52; The 6th lens 60 have the 6th thing side 61 and the 6th picture side 62.
Each lens in optical imaging lens 1 of the present invention, also all have respectively the center thickness T of position on optical axis 4.For example, first lens 10 has first lens thickness T 1, the second lens 20 and has the second lens thickness T2, the 3rd lens 30 and have the 3rd lens thickness T3, the 4th lens 40 have the 4th lens thickness T4, the 5th lens 50 have the 5th lens thickness T5, and the 6th lens 60 have the 6th lens thickness T6.So in optical imaging lens 1, the center thickness of lens is always collectively referred to as ALT on optical axis 4.That is, ALT=T1+T2+T3+T4+T5+T6.
In addition, in optical imaging lens 1 of the present invention, between each lens, there is again clearance (air gap) AG of position on optical axis 4.For example, between first lens 10 to second lens 20 air gap width AG12, the second lens 20 to air gap width AG23, the 3rd lens 30 between the 3rd lens 30 to air gap width AG34, the 4th lens 40 between the 4th lens 40 to air gap width AG45, the 5th lens 50 between the 5th lens 50 to air gap width AG56 between the 6th lens 60.So first lens 10 is called AAG to the sum total that is positioned at five air gap width between each lens on optical axis 4 between the 6th lens 50.That is, AAG=AG12+AG23+AG34+AG45+AG56.
The first embodiment
Refer to Fig. 1, illustrate the first embodiment of optical imaging lens 1 of the present invention.The astigmatic image error that the astigmatic image error (astigmatic field aberration) that the longitudinal spherical aberration (longitudinal spherical aberration) of the first embodiment on imaging surface 71 please refer to Fig. 2 A, the sagitta of arc (sagittal) direction please refer to Fig. 2 B, meridian (tangential) direction please refer to Fig. 2 C and distortion aberration (distortionaberration) please refer to Fig. 2 D.In all embodiment, the Y-axis of each spherical aberration figure represents visual field, and its peak is 1.0, and in this embodiment, the Y-axis of each astigmatism figure and distortion figure represents image height, and system image height is 2.754mm.
The optical imaging lens head system 1 of the first embodiment is mainly made the lens (other lenses except the 4th lens 40) not only with refractive index, one piece of the 4th lens 40 of making but also have refractive index with glass material, optical filter 72, aperture 80, is formed with imaging surface 71 with plastic material by five pieces.Aperture 80 is arranged between the 3rd lens 30 and the 4th lens 40.Optical filter 72 can prevent that the light (for example visible ray) of specific wavelength is projected to imaging surface and affects image quality.
First lens 10 has negative refractive index.The first thing side 11 towards thing side 2 is convex surface, there is the convex surface part 14 that a convex surface part 13 and that is positioned at optical axis near zone is positioned at circumference near zone, the first picture side 12 towards picture side 3 is concave surface, have one and be positioned at the concave surface portion 16 of optical axis near zone and the concave surface portion 17 of a circumference near zone, the first thing side 11 and first of first lens 10 is all aspheric surface as side 12.
The second lens 20 have positive refractive index.The second thing side 21 towards thing side 2 is convex surface, and there is a near convex surface part 24 being positioned at the convex surface part 23 of optical axis near zone and a circumference, the second picture side 22 towards picture side 3 is concave surface, there is the second thing side 21 and second that a concave surface portion 26 and that is positioned at optical axis near zone is positioned at concave surface portion 27, the second lens 20 of circumference near zone and be all aspheric surface as side 22.
The 3rd lens 30 have positive refractive index, the 3rd thing side 31 towards thing side 2 is convex surface, there is the convex surface part 34 that a convex surface part 33 and that is positioned at optical axis near zone is positioned at circumference near zone, and be convex surface towards the 3rd picture side 32 of picture side 3, and there is near the convex surface part 37 of a convex surface part 36 and that is positioned at optical axis near zone circumference.In addition, the 3rd thing side 31 and the 3rd of the 3rd lens 30 is all aspheric surface as side 32.
The 4th lens 40 have positive refractive index, towards the 4th thing side 41 convex surfaces of thing side 2, have a convex surface part 43 and that is positioned at optical axis near zone and are positioned at the convex surface part 44 of circumference near zone, and be plane towards the 4th picture side 42 of picture side 3.
The 5th lens 50 have positive refractive index, the 5th thing side 51 of thing side 2 is concave surface, and there is near the concave surface portion 54 of the concave surface portion 53 and that is positioned at optical axis near zone circumference, the 5th picture side 52 towards picture side 3 is convex surface, has a convex surface part 56 and that is positioned at optical axis near zone and be positioned at the convex surface part 57 of circumference near zone.In addition, the 5th thing side 51 and the 5th of the 5th lens 50 is all aspheric surface as side 52.
The 6th lens 60 have negative refractive index, the 6th thing side 61 towards thing side 2 is convex surface, there is the convex surface part 64 that a convex surface part 63 and that is positioned at optical axis near zone is positioned at circumference near zone, and one towards picture side 3 the 6th picture side 62, have in the concave surface portion 66 of optical axis near zone and the convex surface part 67 of circumference near zone.In addition, the 6th thing side 61 and the 6th of the 6th lens 60 is all aspheric surface as side 62.Optical filter 72 is between the 6th lens 60 and imaging surface 71.
In optical imaging lens 1 of the present invention, from first lens 10, to the 6th lens 60, except the 4th lens 40, remaining belongings side 11/21/31/51/61 amounts to ten curved surfaces with picture side 12/22/32/52/62, is aspheric surface.These aspheric surface systems define via following formula:
Wherein:
R represents the radius-of-curvature of lens surface;
Z represents the degree of depth (point that in aspheric surface, distance optical axis is Y, itself and the tangent plane that is tangential on summit on aspheric surface optical axis, vertical range between the two) of aspheric surface;
Y represents point on non-spherical surface and the vertical range of optical axis;
K is conical surface coefficient (conic constant);
A2i is 2i rank asphericity coefficient.
As shown in figure 18, aspherical surface data as shown in figure 19 for the optical data of the first embodiment imaging lens system.In the optical lens system of following examples, the f-number (f-number) of entirety optical lens system is Fno, half angle of view (Half Field of View, be called for short HFOV) be the half of maximum visual angle in overall optical lens system (Field of View), the unit of radius-of-curvature, thickness and focal length is millimeter (mm) again.Optical imaging lens length (the thing side 11 of first lens 10 is to the distance of this imaging surface 71) is 10.635 millimeters, and system image height is 2.754mm, and HFOV is 46.26 degree.Relation in the first embodiment between each important parameter is listed below:
T4/AG23=1.084
AG12/AG34=9.051
AAG/T6=4.693
AG23/T1=1.384
AG23/T2=1.940
T6/AG56=2.621
T6/AG45=0.704
AAG/AG34=29.225
T1/AG45=0.649
AG12/T6=1.453
T3/AG56=3.421
AG23/AG34=7.949
AG34/AG56=0.421
AAG/T3=3.595
T1/AG56=2.417
ALT/AG45=4.114
The second embodiment
Refer to Fig. 3, illustrate the second embodiment of optical imaging lens 1 of the present invention.The astigmatic image error that the astigmatic image error that the longitudinal spherical aberration of the second embodiment on imaging surface 71 please refer to Fig. 4 A, sagitta of arc direction please refer to Fig. 4 B, meridian direction please refer to Fig. 4 C, distortion aberration please refer to Fig. 4 D.In the second embodiment, the concaveconvex shape of each lens surface is all similar haply with the first embodiment, difference is in the parameter in lens, as radius-of-curvature, lens refractive index, lens radius of curvature, lens thickness, lens asphericity coefficient or back focal length etc. difference.As shown in figure 20, aspherical surface data as shown in figure 21 for the detailed optical data of the second embodiment.10.913 millimeters of optical imaging lens length, and system image height is 2.754mm, HFOV is 45.26 degree.Pass between its each important parameter is:
T4/AG23=1.011
AG12/AG34=7.713
AAG/T6=4.741
AG23/T1=1.483
AG23/T2=1.471
T6/AG56=2.506
T6/AG45=0.659
AAG/AG34=28.636
T1/AG45=0.614
AG12/T6=1.277
T3/AG56=3.191
AG23/AG34=8.348
AG34/AG56=0.415
AAG/T3=3.724
T1/AG56=2.335
ALT/AG45=4.036
The 3rd embodiment
Refer to Fig. 5, illustrate the 3rd embodiment of optical imaging lens 1 of the present invention.The astigmatic image error that the astigmatic image error that the longitudinal spherical aberration of the 3rd embodiment on imaging surface 71 please refer to Fig. 6 A, sagitta of arc direction please refer to Fig. 6 B, meridian direction please refer to Fig. 6 C, distortion aberration please refer to Fig. 6 D.In the 3rd embodiment, the concaveconvex shape of each lens surface is all similar haply with the first embodiment, difference is in the parameter in lens, as radius-of-curvature, lens refractive index, lens radius of curvature, lens thickness, lens asphericity coefficient or back focal length etc. difference.The detailed optical data of the 3rd embodiment as shown in figure 22, aspherical surface data as shown in figure 23,11.119 millimeters of optical imaging lens length, and system image height is 2.754mm, HFOV is 45.45 degree.Pass between its each important parameter is:
T4/AG23=1.126
AG12/AG34=12.809
AAG/T6=3.354
AG23/T1=1.532
AG23/T2=1.165
T6/AG56=6.012
T6/AG45=0.872
AAG/AG34=46.487
T1/AG45=0.594
AG12/T6=0.924
T3/AG56=4.989
AG23/AG34=14.476
AG34/AG56=0.434
AAG/T3=4.042
T1/AG56=4.098
ALT/AG45=4.234
The 4th embodiment
Refer to Fig. 7, illustrate the 4th embodiment of optical imaging lens 1 of the present invention.The astigmatic image error that the astigmatic image error that the longitudinal spherical aberration of the 4th embodiment on imaging surface 71 please refer to Fig. 8 A, sagitta of arc direction please refer to Fig. 8 B, meridian direction please refer to Fig. 8 C, distortion aberration please refer to Fig. 8 D.The 4th embodiment and the first embodiment are similar, difference is in the parameter in lens, as radius-of-curvature, lens refractive index, lens radius of curvature, lens thickness, lens asphericity coefficient or back focal length etc. difference, and the 6th thing side 61 of the 6th lens 60 has a convex surface part 63 ' that is positioned at optical axis near zone, and a concave surface portion 64 ' that is positioned at circumference near zone.The detailed optical data of the 4th embodiment as shown in figure 24, aspherical surface data as shown in figure 25,11.449 millimeters of optical imaging lens length, and system image height is 2.754mm, HFOV is 49.07 degree.Pass between its each important parameter is:
T4/AG23=1.126
AG12/AG34=14.287
AAG/T6=6.175
AG23/T1=1.332
AG23/T2=0.837
T6/AG56=0.875
T6/AG45=0.911
AAG/AG34=39.127
T1/AG45=1.041
AG12/T6=2.255
T3/AG56=1.240
AG23/AG34=9.644
AG34/AG56=0.138
AAG/T3=4.360
T1/AG56=1.000
ALT/AG45=7.227
The 5th embodiment
Refer to Fig. 9, illustrate the 5th embodiment of optical imaging lens 1 of the present invention.The astigmatic image error that the astigmatic image error that the longitudinal spherical aberration of the 5th embodiment on imaging surface 71 please refer to Figure 10 A, sagitta of arc direction please refer to Figure 10 B, meridian direction please refer to Figure 10 C, distortion aberration please refer to Figure 10 D.The 5th embodiment and the first embodiment are similar, and difference is in the parameter in lens, as radius-of-curvature, lens refractive index, lens radius of curvature, lens thickness, lens asphericity coefficient or back focal length etc. difference.The detailed optical data of the 5th embodiment as shown in figure 26, aspherical surface data as shown in figure 27,11.570 millimeters of optical imaging lens length, and system image height is 2.754mm, HFOV is 46.65 degree.Pass between its each important parameter is:
T4/AG23=1.065
AG12/AG34=2.871
AAG/T6=5.027
AG23/T1=0.575
AG23/T2=1.685
T6/AG56=7.176
T6/AG45=0.692
AAG/AG34=7.895
T1/AG45=1.176
AG12/T6=1.828
T3/AG56=7.533
AG23/AG34=1.534
AG34/AG56=4.569
AAG/T3=4.788
T1/AG56=12.201
ALT/AG45=3.980
The 6th embodiment
Refer to Figure 11, illustrate the 6th embodiment of optical imaging lens 1 of the present invention.The astigmatic image error that the astigmatic image error that the longitudinal spherical aberration of the 6th embodiment on imaging surface 71 please refer to Figure 12 A, sagitta of arc direction please refer to Figure 12 B, meridian direction please refer to Figure 12 C, distortion aberration please refer to Figure 12 D.The 6th embodiment and the first embodiment are similar, and difference is in the parameter in lens, as radius-of-curvature, lens refractive index, lens radius of curvature, lens thickness, lens asphericity coefficient or back focal length etc. difference.The detailed optical data of the 6th embodiment as shown in figure 28, aspherical surface data as shown in figure 29,11.592 millimeters of optical imaging lens length, and system image height is 2.754mm, HFOV is 48.28 degree.Pass between its each important parameter is:
T4/AG23=0.632
AG12/AG34=2.600
AAG/T6=5.904
AG23/T1=0.680
AG23/T2=1.719
T6/AG56=13.088
T6/AG45=0.648
AAG/AG34=6.364
T1/AG45=0.902
AG12/T6=2.412
T3/AG56=13.654
AG23/AG34=1.019
AG34/AG56=12.143
AAG/T3=5.659
T1/AG56=18.212
ALT/AG45=3.183
The 7th embodiment
Refer to Figure 13, illustrate the 7th embodiment of optical imaging lens 1 of the present invention.The astigmatic image error that the astigmatic image error that the longitudinal spherical aberration of the 7th embodiment on imaging surface 71 please refer to Figure 14 A, sagitta of arc direction please refer to Figure 14 B, meridian direction please refer to Figure 14 C, distortion aberration please refer to Figure 14 D.In the 7th embodiment, the concaveconvex shape of each lens surface is all similar haply with the first embodiment, difference is in the parameter in lens, as radius-of-curvature, lens refractive index, lens radius of curvature, lens thickness, lens asphericity coefficient or back focal length etc. difference, and the 6th thing side 61 of the 6th lens 60 has convex surface part 63 ＇ that are positioned at optical axis near zone, and 64 ＇ of concave surface portion that are positioned at circumference near zone.The detailed optical data of the 7th embodiment as shown in figure 30, aspherical surface data as shown in figure 31,12.008 millimeters of optical imaging lens length, and system image height is 2.754mm, HFOV is 47.49 degree.Pass between its each important parameter is:
T4/AG23=1.330
AG12/AG34=6.816
AAG/T6=2.259
AG23/T1=0.717
AG23/T2=1.363
T6/AG56=8.506
T6/AG45=5.237
AAG/AG34=12.483
T1/AG45=3.917
AG12/T6=1.234
T3/AG56=4.335
AG23/AG34=2.962
AG34/AG56=1.539
AAG/T3=4.433
T1/AG56=6.362
ALT/AG45=20.591
In addition, the important parameter of each embodiment arranges in Figure 32.
The present invention is by adopting technique scheme, and compared with prior art, tool has the following advantages:
1, in longitudinal spherical aberration Fig. 2 A of this first preferred embodiment, the curve that each wavelength becomes all very close to, the Off-axis-light that each wavelength differing heights is described all concentrates near imaging point, can be found out that by the skewness magnitude level of each curve the imaging point deviation control of Off-axis-light of differing heights is at ± 0.05mm, therefore this first preferred embodiment obviously improves the spherical aberration of different wave length really, in addition, three kinds represent that wavelength distance is to each other also quite approaching, the image space that represents different wave length light is quite concentrated, thereby makes chromatic aberation obtain obviously improvement.
2, in two astigmatic image errors of Fig. 2 B and Fig. 2 C are graphic, three kinds represent in drop on ± 0.05mm of the focal length of wavelength in whole field range, the optical imaging lens that the first preferred embodiment is described can effectively be eliminated aberration, in addition, three kinds represent that wavelength distance is to each other quite approaching, represent that the dispersion on axle also improves significantly.The distortion aberration that the distortion aberration of Fig. 2 D is graphic shows the first preferred embodiment maintains ± 2.5% scope in, illustrate that the distortion aberration of this first preferred embodiment has met the image quality requirement of optical system, this first preferred embodiment of explanation is compared to existing optical lens accordingly, can effectively overcome chromatic aberation and preferably image quality is provided, therefore this first preferred embodiment can be under the condition that maintains favorable optical performance, reach the effect that expands field of view angle.
3, the positive refractive index of the 4th lens can provide camera lens entirety required refractive index; In addition, first lens as side the convex surface part in the concave surface portion of circumference near zone, the second lens thing side in circumference near zone, the 3rd lens as side the concave surface portion in the convex surface part of circumference near zone, the 5th lens thing side in circumference near zone and the 6th lens as side in the convex surface part of circumference near zone, can reach the effect of improving aberration with arranging in pairs or groups, expand field angle simultaneously.
In addition, according to the relation between each important parameter of above each embodiment, see through the Numerical Control of following parameter, can assist deviser to design to possess favorable optical performance, entire length effectively shortens and technical feasible optical imaging lens.The ratio of different parameters has better scope, for example:
(1) AG12/AG34 suggestion should be more than or equal to 2.0, AAG/AG34 suggestion should be more than or equal to 6.0, AG23/AG34 suggestion should be more than or equal to 1.4, AG34/AG56 suggestion should be less than or equal to 15.0:AG12, AG23, AG34 and AG56 are respectively between first and second lens, second and the 3rd between lens, air gap width between the 3rd and the 4th lens and between the 5th and the 6th lens, AAG is the clearance summation between the first to the 6th lens, above-mentioned numerical value is the ratio that remains suitable, avoid single excesssive gap and cause entire length long, or the too small and impact assembling in single gap, therefore, AG12/AG34 suggestion should be more than or equal to 2.0 and with better between 2.0～25, AAG/AG34 suggestion should be more than or equal to 6.0, and with better between 6.0～60, AG23/AG34 suggestion should be more than or equal to 1.4, and with better between 1.4～10, AG34/AG56 suggestion should be less than or equal to 15.0, and with better between 0.1～15.
(2) T4/AG23 suggestion should be more than or equal to 1.05, AG23/T1 suggestion should be less than or equal to 1.5, it is the air gap width between second and third lens that AG23/T2 suggestion should be less than or equal to 2.3:AG23, and T1, T2 and T4 are respectively first, second and the width along optical axis of the 4th lens, it is little of to avoid camera lens entirety long that AG23 should become in design, and T1, T2 and T4 should maintain an appropriate value, to maintain good optical property, therefore T4/AG23 should design towards the mode that becomes large, and AG23/T1, the AG23/T2 little design that can become, suggestion T4/AG23 suggestion should be more than or equal to 1.05, and with better between 1.05～1.5, AG23/T1 suggestion should be less than or equal to 1.5, and with better between 0.5～1.5, AG23/T2 suggestion should be less than or equal to 2.3, and with better between 0.6～2.3.
(3) T6/AG45 suggestion should be less than or equal to 6.0, T1/AG45 suggestion should be less than or equal to 4.0, it is the air gap width between the 4th and the 5th lens that ALT/AG45 suggestion should be less than or equal to 25.0:AG45, because the 4th lens possess positive refractive index, so AG45 is if maintain a suitable slightly large value, to contribute to make light to converge to after suitable degree incident the 5th lens again, to improve image quality and to expand field angle, therefore T6/AG45, T1/AG45, ALT/AG45 all should design towards the mode that becomes little, T6/AG45 suggestion should be less than or equal to 6.0, and with better between 0.2～6.0, T1/AG45 suggestion should be less than or equal to 4.0, and with better between 0.3～4.0, ALT/AG45 suggestion should be less than or equal to 25.0, and with better between 2.0～25.
(4) T6/AG56 suggestion should be less than or equal to 15.0, T3/AG56 suggestion should be less than or equal to 18.0, it is the 5th that T1/AG56 suggestion should be less than or equal to 7.0:AG56, air gap width between the 6th lens, if maintain a suitable slightly large value, can make light be adjusted to after a suitable degree incident the 6th lens again, contribute to improve the ability of the 6th lens elimination aberration, therefore T6/AG56, T3/AG56, T1/AG56 all should design towards the mode that becomes little, suggestion T6/AG56 suggestion should be less than or equal to 15.0, and with better between 0.5～15, T3/AG56 suggestion should be less than or equal to 18.0, and with better between 1.0～18, T1/AG56 suggestion should be less than or equal to 7.0, and with better between 0.5～7.0.
(5) AAG/T6 suggestion should be more than or equal to 3.3, AG12/T6 suggestion should be more than or equal to 1.1, AAG/T3 suggestion should be more than or equal to 3.5, make to maintain between clearance and lens thickness good configuration, AAG/T6 with between 3.3～9.0 better, AG12/T6 is with better between 1.1～4.0, and AAG/T3 is with better between 3.5～6.0.
The present invention's optical imaging lens 1, also can be applicable in electronic installation, for example, be applied to game machine or the green device of driving discipline.Refer to Figure 16, it is the first preferred embodiment of the electronic installation 100 of application of aforementioned optical imaging lens 1.Electronic installation 100 comprises casing 110, and is arranged on the image module 120 in casing 110.Figure 16, only taking driving recorder as example, illustrates electronic installation 100, but the pattern of electronic installation 100 is not as limit.
As shown in Figure 16, image module 120 comprises foregoing optical imaging lens 1.Figure 16 illustrates the optical imaging lens 1 of aforementioned the first embodiment.In addition, electronic installation 100 separately comprises the lens barrel 130 for arranging for optical imaging lens 1, the module back seat unit (module housingunit) 140 for arranging for lens barrel 130, for the substrate 172 arranging for module back seat unit 140, and be arranged at substrate 172 and be positioned at the image sensor 70 of the picture side 3 of optical imaging lens 1.Image sensor 70 in optical imaging lens 1 can be sense electronics optical assembly, for example photosensitive coupling component or complementary matal-oxide semiconductor assembly.Imaging surface 71 is to be formed at image sensor 70.
Image sensor 70 used in the present invention is to adopt the packaged type of interconnection system chip package on plate and be directly connected on substrate 172.The difference of the packaged type of this and the encapsulation of traditional die size is, on plate, interconnection system chip package does not need to use cover glass.Therefore, in optical imaging lens 1, need to before image sensor 70, cover glass be set, so the present invention is not as limit.
It is noted that, though the present embodiment display filter 72, but also can omit in other embodiments the structure of optical filter 72, so optical filter 72 inessential.And casing 110, lens barrel 130 and/or module back seat unit 140 can be single component or multiple assembly assembles, but this need not be defined in.Secondly, the image sensor 70 that the present embodiment uses is to adopt the packaged type of interconnection system chip package (Chip on Board, COB) on plate and be directly connected on substrate 172, and so the present invention is not as limit.
The six-element lens 10,20,30,40,50,60 with refractive index is that the mode to have respectively airspace between two lens is arranged in lens barrel 130 illustratively.Module back seat unit 140 has camera lens back seat 141, and is arranged at the image sensor back seat 146 between camera lens back seat 141 and image sensor 70, so, in other enforcement aspect, not necessarily has image sensor back seat 146.Lens barrel 130 is coaxially to arrange along axis I-I' with camera lens back seat 141, and lens barrel 130 is arranged at the inner side of camera lens back seat 141.
Separately referring to Figure 17, is the second preferred embodiment of the portable electronic devices 200 of application of aforementioned optical imaging lens 1.The main difference of the portable electronic devices 200 of the second preferred embodiment and the portable electronic devices 100 of the first preferred embodiment is: camera lens back seat 141 has the first pedestal 142, the second pedestal 143, coil 144 and magnet assembly 145.The first pedestal 142 arrange for lens barrels 130 and fit with lens barrel 130 outsides and along axis I-I' arrange, the second pedestal 143 is along axis I-I' and around the arranged outside of the first pedestal 142.Coil 144 is arranged between the outside of the first pedestal 142 and the inner side of the second pedestal 143.Magnet assembly 145 is arranged between the outside of coil 144 and the inner side of the second pedestal 143.
The first pedestal 142 can and be arranged on optical imaging lens 1 in lens barrel 130 along axis I-I' with lens barrel 130, and the optical axis 4 of Fig. 1 moves.146 of image sensor back seats fit with the second pedestal 143.Optical filter 72, is arranged on image sensor back seat 146.Other modular constructions of the second embodiment portable electronic devices 200 are similar with the portable electronic devices 100 of the first embodiment, therefore do not repeat them here.
Although specifically show and introduced the present invention in conjunction with preferred embodiment; but those skilled in the art should be understood that; not departing from the spirit and scope of the present invention that appended claims limits; can make a variety of changes the present invention in the form and details, be protection scope of the present invention.
Claims (18)
1. an optical imaging lens, is characterized in that: from thing side to sequentially comprising along an optical axis as side:
One first lens, it has a concave surface portion that is positioned at circumference near zone as side;
One second lens, its thing side has a convex surface part that is positioned at circumference near zone;
One the 3rd lens, it has a convex surface part that is positioned at circumference near zone as side;
One aperture;
One has the 4th lens of positive refractive index;
One the 5th lens, its thing side has a concave surface portion that is positioned at circumference near zone; And
One the 6th lens, it has a convex surface part that is positioned at circumference near zone as side;
Wherein, the lens that this optical imaging lens has a refractive index only have totally six, above-mentioned first lens～six lens.
2. a kind of optical imaging lens according to claim 1, is characterized in that: wherein the 4th lens are T4 at the center thickness of this optical axis, and the gap width between these second lens and the 3rd lens on optical axis is AG23, and meets 1.05≤T4/AG23.
3. a kind of optical imaging lens according to claim 2, it is characterized in that: wherein between this first lens and this second lens, the gap width on optical axis is AG12, gap width between the 3rd lens and the 4th lens on optical axis is AG34, and meets 2.0≤AG12/AG34.
4. a kind of optical imaging lens according to claim 1, it is characterized in that: wherein this first lens between the 6th lens on optical axis the width summation of five clearances be AAG, the center thickness of the 6th lens on this optical axis is T6, and meets 3.3≤AAG/T6.
5. a kind of optical imaging lens according to claim 4, it is characterized in that: wherein between these second lens and the 3rd lens, the gap width on optical axis is AG23, the center thickness of this first lens on this optical axis is T1, and meets AG23/T1≤1.5.
6. a kind of optical imaging lens according to claim 1, it is characterized in that: wherein between these second lens and the 3rd lens, the gap width on optical axis is AG23, the center thickness of these the second lens on this optical axis is T2, and meets AG23/T2≤2.3.
7. a kind of optical imaging lens according to claim 6, it is characterized in that: wherein the center thickness of the 6th lens on this optical axis is T6, gap width between the 5th lens and the 6th lens on optical axis is AG56, and meets T6/AG56≤15.0.
8. a kind of optical imaging lens according to claim 1, it is characterized in that: wherein the center thickness of the 6th lens on this optical axis is T6, gap width between the 4th lens and the 5th lens on optical axis is AG45, and meets T6/AG45≤6.0.
9. a kind of optical imaging lens according to claim 8, it is characterized in that: wherein this first lens between the 6th lens on optical axis the width summation of five clearances be AAG, gap width between the 3rd lens and the 4th lens on optical axis is AG34, and meets 6.0≤AAG/AG34.
10. a kind of optical imaging lens according to claim 1, it is characterized in that: wherein the center thickness of this first lens on this optical axis is T1, gap width between the 4th lens and the 5th lens on optical axis is AG45, and meets T1/AG45≤4.0.
11. a kind of optical imaging lens according to claim 10, it is characterized in that: wherein between this first lens and this second lens, the gap width on optical axis is AG12, the center thickness of the 6th lens on this optical axis is T6, and meets 1.1≤AG12/T6.
12. a kind of optical imaging lens according to claim 1, it is characterized in that: wherein the center thickness of the 3rd lens on this optical axis is T3, gap width between the 5th lens and the 6th lens on optical axis is AG56, and meets T3/AG56≤18.0.
13. a kind of optical imaging lens according to claim 12, it is characterized in that: wherein between these second lens and the 3rd lens, the gap width on optical axis is AG23, gap width between the 3rd lens and the 4th lens on optical axis is AG34, and meets 1.4≤AG23/AG34.
14. a kind of optical imaging lens according to claim 1, it is characterized in that: wherein between the 3rd lens and the 4th lens, the gap width on optical axis is AG34, gap width between the 5th lens and the 6th lens on optical axis is AG56, and meets AG34/AG56≤15.0.
15. a kind of optical imaging lens according to claim 14, it is characterized in that: wherein this first lens between the 6th lens on optical axis the width summation of five clearances be AAG, the center thickness of the 3rd lens on this optical axis is T3, and meets 3.5≤AAG/T3.
16. a kind of optical imaging lens according to claim 1, it is characterized in that: wherein the center thickness of this first lens on this optical axis is T1, gap width between the 5th lens and the 6th lens on optical axis is AG56, and meets T1/AG56≤7.0.
17. a kind of optical imaging lens according to claim 16, it is characterized in that: wherein this first lens to the center thickness summation of all lens of the 6th lens on this optical axis is ALT, gap width between the 4th lens and the 5th lens on optical axis is AG45, and meets ALT/AG45≤25.0.
18. 1 kinds of electronic installations, is characterized in that: comprise: a casing; And an image module, being arranged in this casing, this image module comprises: the optical imaging lens as described in any one in claim 1 to 17; For the lens barrel arranging for this optical imaging lens; For the module back seat unit arranging for this lens barrel; For the substrate arranging for this module back seat unit; And be arranged at this substrate and be positioned at the image sensor of one of this optical imaging lens as side.
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