CN103777329A - Optical imaging lens and electronic device applying optical imaging lens - Google Patents
Optical imaging lens and electronic device applying optical imaging lens Download PDFInfo
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- CN103777329A CN103777329A CN201310528305.5A CN201310528305A CN103777329A CN 103777329 A CN103777329 A CN 103777329A CN 201310528305 A CN201310528305 A CN 201310528305A CN 103777329 A CN103777329 A CN 103777329A
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Abstract
The invention relates to an optical imaging lens and an electronic device applying the optical imaging lens. The optical imaging lens sequentially comprises six lenses from an objective side to an image side, wherein an objective side face of the first lens is provided with a convex face portion located in an area nearby an optical axis, and an image side face is provided with a concave face portion located in an area nearby the optical axis; an image side face of the second lens is provided with a convex face portion located in an area nearby the optical axis; an objective side face of the third lens is provided with a convex face portion located in an area nearby the optical axis; an objective side face of the fifth lens is provided with a convex face portion located in an area nearby a circumference, and an image side face is provided with a convex face portion located in an area nearby the optical axis; and an image side face of the sixth lens is provided with a concave face portion located in an area nearby the optical axis. The electronic device comprises a casing and an image module, wherein the image module comprises the optical imaging lens, a lens cone, a module rear base unit and an image sensor. The electronic device applying the optical imaging lens has the advantages of imaging qualify improvement and miniaturization by being matched with the lens.
Description
Technical field
The invention relates to a kind of optical lens, refer to especially a kind of optical imaging lens and apply the electronic installation of this optical imaging lens.
Background technology
In recent years, the universal image module correlation technique that makes of the portable electronic product such as mobile phone and digital camera is flourish, this image module mainly comprises optical imaging lens, the assemblies such as module back seat unit (module holder unit) and sensor (sensor), and the slim light and handyization trend of mobile phone and digital camera also allows the miniaturization demand of image module more and more high, along with photosensitive coupling component (Charge Coupled Device, referred to as CCD) or complementary matal-oxide semiconductor assembly (Complementary Metal-Oxide Semiconductor, referred to as CMOS) technical progress and size downsizing, the optical imaging lens being loaded in image module also needs correspondingly to shorten length, but for fear of photographic effects and Quality Down, in the time shortening the length of optical imaging lens, still to take into account good optical property.
U.S. Patent Bulletin numbers 7,580,205 has disclosed a kind of wide-angle optical lens being made up of six-element lens, and its lens length reaches 2 centimetres, and so the excessive camera lens of volume cannot be applicable to pursue compact and only have easily 1 to 2 centimetre of thin electronic installation.
Therefore the system length that how can effectively reduce optical lens, still can maintain enough optical properties simultaneously, is industry problem urgently to be resolved hurrily always.
Summary of the invention
Therefore, the present invention's object,, providing under a kind of condition that is shortening lens system length, still can possess the optical imaging lens of good optical property.
So optical imaging lens of the present invention, from thing side to sequentially comprising a first lens, one second lens, one the 3rd lens, one the 4th lens, one the 5th lens as side along an optical axis, and one the 6th lens, and this first lens to the 6th lens all have refractive index, and comprise one towards thing side and make thing side that imaging light passes through and one towards as side and picture side that imaging light is passed through.
This thing side of this first lens has a convex surface part that is positioned at optical axis near zone, and this has a concave surface portion that is positioned at optical axis near zone as side; This thing side of these the second lens has a convex surface part that is positioned at optical axis near zone; This thing side of the 3rd lens has a convex surface part that is positioned at optical axis near zone; This thing side of the 5th lens has a convex surface part that is positioned at circumference near zone, and this has a convex surface part that is positioned at optical axis near zone as side; This of the 6th lens has a concave surface portion that is positioned at optical axis near zone as side, and the material of the 6th lens is plastics.
Wherein, the lens that this optical imaging lens has a refractive index only have six.
The beneficial effect of optical imaging lens of the present invention is: this thing side by this first lens has a convex surface part at optical axis near zone, and this has a concave surface portion at optical axis near zone as side, helps this optical imaging lens optically focused.In addition, this thing side that this thing side that has a convex surface part that is positioned at optical axis near zone, the 3rd lens by this thing side of these the second lens has a convex surface part that is positioned at optical axis near zone, the 5th lens has one and is positioned at the convex surface part of circumference near zone and this and has a convex surface part that is positioned at optical axis near zone as side, and the 6th this of lens there is a concave surface portion that is positioned at optical axis near zone as side, be conducive to revise aberration and guarantee the image quality of optical imaging lens.
Therefore, another object of the present invention, is providing a kind of electronic installation that is applied to aforesaid optical imaging lens.
So electronic installation of the present invention, comprises a casing, and an image module being arranged in this casing.
This image module comprise just like aforementioned described optical imaging lens, for the lens barrel, that arranges for this optical imaging lens the module back seat unit for arranging for this lens barrel, an and image sensor that is arranged at this optical imaging lens head portrait side.
The beneficial effect of electronic installation of the present invention is: by load the image module with aforesaid optical imaging lens in this electronic installation, shortening under the condition of system length in order to this imaging lens, the advantage of good optical property still can be provided, under the situation of not sacrificing optical property, make more slim light and handy electronic installation, make the present invention have good Practical Performance concurrently and contribute to the structural design of compactization, and can meet higher-quality consumption demand.
Accompanying drawing explanation
Fig. 1 is a schematic diagram, and a lens arrangement is described;
Fig. 2 is a configuration schematic diagram, and one first preferred embodiment of optical imaging lens of the present invention is described;
Fig. 3 is longitudinal spherical aberration and every aberration diagram of this first preferred embodiment;
Fig. 4 is a tabular drawing, and the optical data of each lens of this first preferred embodiment is described;
Fig. 5 is a tabular drawing, and the asphericity coefficient of each lens of this first preferred embodiment is described;
Fig. 6 is a configuration schematic diagram, and one second preferred embodiment of optical imaging lens of the present invention is described;
Fig. 7 is longitudinal spherical aberration and every aberration diagram of this second preferred embodiment;
Fig. 8 is a tabular drawing, and the optical data of each lens of this second preferred embodiment is described;
Fig. 9 is a tabular drawing, and the asphericity coefficient of each lens of this second preferred embodiment is described;
Figure 10 is a configuration schematic diagram, and one the 3rd preferred embodiment of optical imaging lens of the present invention is described;
Figure 11 is longitudinal spherical aberration and every aberration diagram of the 3rd preferred embodiment;
Figure 12 is a tabular drawing, and the optical data of each lens of the 3rd preferred embodiment is described;
Figure 13 is a tabular drawing, and the asphericity coefficient of each lens of the 3rd preferred embodiment is described;
Figure 14 is a configuration schematic diagram, and one the 4th preferred embodiment of optical imaging lens of the present invention is described;
Figure 15 is longitudinal spherical aberration and every aberration diagram of the 4th preferred embodiment;
Figure 16 is a tabular drawing, and the optical data of each lens of the 4th preferred embodiment is described;
Figure 17 is a tabular drawing, and the asphericity coefficient of each lens of the 4th preferred embodiment is described;
Figure 18 is a configuration schematic diagram, and one the 5th preferred embodiment of optical imaging lens of the present invention is described;
Figure 19 is longitudinal spherical aberration and every aberration diagram of the 5th preferred embodiment;
Figure 20 is a tabular drawing, and the optical data of each lens of the 5th preferred embodiment is described;
Figure 21 is a tabular drawing, and the asphericity coefficient of each lens of the 5th preferred embodiment is described;
Figure 22 is a configuration schematic diagram, and one the 6th preferred embodiment of optical imaging lens of the present invention is described;
Figure 23 is longitudinal spherical aberration and every aberration diagram of the 6th preferred embodiment;
Figure 24 is a tabular drawing, and the optical data of each lens of the 6th preferred embodiment is described;
Figure 25 is a tabular drawing, and the asphericity coefficient of each lens of the 6th preferred embodiment is described;
Figure 26 is a configuration schematic diagram, and one the 7th preferred embodiment of optical imaging lens of the present invention is described;
Figure 27 is longitudinal spherical aberration and every aberration diagram of the 7th preferred embodiment;
Figure 28 is a tabular drawing, and the optical data of each lens of the 7th preferred embodiment is described;
Figure 29 is a tabular drawing, and the asphericity coefficient of each lens of the 7th preferred embodiment is described;
Figure 30 is a configuration schematic diagram, and one the 8th preferred embodiment of optical imaging lens of the present invention is described;
Figure 31 is longitudinal spherical aberration and every aberration diagram of the 8th preferred embodiment;
Figure 32 is a tabular drawing, and the optical data of each lens of the 8th preferred embodiment is described;
Figure 33 is a tabular drawing, and the asphericity coefficient of each lens of the 8th preferred embodiment is described;
Figure 34 is a tabular drawing, illustrates that this first preferred embodiment of this six chips optical imaging lens is to every optical parametric of the 8th preferred embodiment;
Figure 35 is a cross-sectional schematic, and one first preferred embodiment of electronic installation of the present invention is described; And
Figure 36 is a cross-sectional schematic, and one second preferred embodiment of electronic installation of the present invention is described.
[symbol description]
10 optical imaging lens
2 apertures
3 first lens
31 thing sides
311 convex surface part
32 picture sides
321 concave surface portions
4 second lens
41 thing sides
411 convex surface part 42 picture sides
421 concave surface portions
422 concave surface portions
423 convex surface part
424 convex surface part
425 convex surface part
5 the 3rd lens
51 thing sides
511 convex surface part
52 picture sides
521 convex surface part
522 concave surface portions
6 the 4th lens
61 thing sides
611 convex surface part
612 concave surface portions
62 picture sides
621 concave surface portions
622 convex surface part
7 the 5th lens
71 thing sides
711 convex surface part
72 picture sides
721 convex surface part
722 concave surface portions
8 the 6th lens
81 thing sides
811 convex surface part
812 concave surface portions
82 picture sides
821 concave surface portions
822 convex surface part
9 optical filters
91 thing sides
92 picture sides
100 imaging surfaces
I optical axis
1 electronic installation
11 casings
12 image modules
120 module back seat unit
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
II, III axis
Embodiment
Now the present invention is further described with embodiment by reference to the accompanying drawings.
Before the present invention is described in detail, should be noted that in the following description content, similarly assembly is to represent with identical numbering.
This piece of instructions is 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, take Fig. 1 as example, wherein I be optical axis and this lens be take 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 ", refer to the circumference near zone that is positioned at the curved surface only passing through for imaging light on lens, that is C region in figure, wherein, imaging light has comprised chief ray (chief ray) Lc and marginal ray (marginal ray) Lm." 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 Fig. 1.In addition, these lens also comprise an extension E, use for this entirety of lens package in an 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 succinct most extension that omitted.
Consult Fig. 2 and Fig. 4, the first preferred embodiment of one of optical imaging lens 10 of the present invention, from thing side to sequentially comprising a first lens 3, one second lens 4, one the 3rd lens 5, an aperture 2, one the 4th lens 6, one the 5th lens 7, one the 6th lens 8 as side along an optical axis I, and an optical filter 9.When the light being sent by a thing to be taken enters this optical imaging lens 10, and via this first lens 3, these second lens 4, the 3rd lens 5, this aperture 2, the 4th lens 6, the 5th lens 7, the 6th lens 8, and after this optical filter 9, can form an image at an imaging surface 100 (Image Plane).This optical filter 9 is infrared filter (IR Cut Filter), affects image quality for the infrared transmitting that prevents light to this imaging surface 100.Supplementary notes, thing side is the side towards this thing to be taken, and is the side towards this imaging surface 100 as side.
Wherein, this first lens 3, these second lens 4, the 3rd lens 5, the 4th lens 6, the 5th lens 7, the 6th lens 8, and this optical filter 9 all has respectively one towards thing side and thing side 31,41,51,61,71,81,91 that imaging light is passed through, and one towards as side and picture side 32,42,52,62,72,82,92 that imaging light is passed through.
In addition, in order to meet the light-weighted demand of product, these second lens 4 to the 6th lens 8 are all to be possessed refractive index and is all that plastic material is made, but its material is not still as restriction.
This first lens 3 is for bearing the lens that refractive index and material are glass.This thing side 31 of this first lens 3 is for convex surface and be sphere and have a convex surface part 311 that is positioned at optical axis I near zone, this of this first lens 3 as side 32 for concave surface and be sphere and there is a concave surface portion 321 that is positioned at optical axis I near zone.
The lens that these second lens 4 are positive refractive index.This thing side 41 of these the second lens 4 is convex surface and is aspheric surface, this of these the second lens 4 is aspheric surface as side 42, and has one and be positioned at the convex surface part 423 between optical axis near zone and circumference near zone in concave surface portion 421, a concave surface portion 422 and that is positioned at circumference near zone of optical axis near zone.
The lens that the 3rd lens 5 are positive refractive index, this thing side 51 of the 3rd lens 5 is for convex surface and be aspheric surface and have this of convex surface part 511, the three lens 5 that is positioned at optical axis I near zone and be convex surface as side 52 and be aspheric surface.
The lens that the 4th lens 6 are negative refractive index.This thing side 61 of the 4th lens 6 is for aspheric surface and have a convex surface part 611 that is positioned at optical axis I near zone, an and concave surface portion 612 that is positioned at circumference near zone, this of the 4th lens 6 as side 62 for aspheric surface and there is a concave surface portion 621 that is positioned at optical axis I near zone, an and convex surface part 622 that is positioned at circumference near zone.
The lens that the 5th lens 7 are positive refractive index.This thing side 71 of the 5th lens 7 for convex surface and be aspheric surface and have this of convex surface part 711, the five lens 7 that is positioned at circumference near zone as side 72 for convex surface and be aspheric surface and there is a convex surface part 721 that is positioned at optical axis I near zone.
The lens that the 6th lens 8 are negative refractive index.This thing side 81 of the 6th lens 8 is for aspheric surface and have a convex surface part 811 that is positioned at optical axis I near zone, an and concave surface portion 812 that is positioned at circumference near zone, this of the 6th lens 8 as side 82 for aspheric surface and there is a concave surface portion 821 that is positioned at optical axis I near zone, an and convex surface part 822 that is positioned at circumference near zone.
In this first preferred embodiment, only have first lens to the six lens to there is refractive index.
Other detailed optical datas of this first preferred embodiment as shown in Figure 4, and the total system focal length of this first preferred embodiment (effective focal length, be called for short EFL) be 1.456mm, half angle of view (half field of view, be called for short HFOV) be that 60.0 °, f-number (Fno) are 2.60, its system length is 12.31mm.Wherein, this system length refers to that this thing side 31 by this first lens 3 is to the distance imaging surface 100 is on optical axis I.
In addition, from these second lens 4, the 3rd lens 5, the 4th lens 6, the 5th lens 7, and the thing side 41,51,61,71,81 of the 6th lens 8 and picture side 42,52,62,72,82, amounting to ten faces is all aspheric surfaces, and this aspheric surface is according to following formula definition:
Wherein:
Y: the point in aspheric curve and the distance of optical axis I;
Z: the degree of depth (point that in aspheric surface, distance optical axis I is Y, with the tangent plane that is tangential on the upper summit of aspheric surface optical axis I, vertical range between the two) of aspheric surface;
R: the radius-of-curvature of lens surface;
K: conical surface coefficient (conic constant);
A
2i: 2i rank asphericity coefficient.
The thing side 41 of these the second lens 4 looks like the every asphericity coefficient of side 82 in formula (1) as shown in Figure 5 to the 6th lens 8.
In addition, in the optical imaging lens 10 of this first preferred embodiment, the pass between each important parameter is:
G12=1.56；T2=2.14；G23=0.66；T3=2.12；
G34=0.63；T4=0.34；T5=1.94；T6=0.30；
ALT=7.54；Gaa=2.94；EFL=1.46；
ALT/T2=3.53；
Gaa/T6=9.80；
G23/T3=0.31；
Gaa/T4=8.67；
G23/T4=1.95；
Gaa/T3=1.39；
EFL/G34=2.30；
G23/G34=1.04；
ALT/G12=4.84；
ALT/G23=11.42；
T6/T2=0.14；
EFL/T4=4.29；
G23/T6=2.20；
ALT/EFL=5.18; And
T5/T4=5.72。
Wherein,
T2 is the thickness of these the second lens 4 on optical axis I;
T3 is the thickness of the 3rd lens 5 on optical axis I;
T4 is the thickness of the 4th lens 6 on optical axis I;
T5 is the thickness of the 5th lens 7 on optical axis I;
T6 is the thickness of the 6th lens 8 on optical axis I;
G12 is that this first lens 3 is to this clearance of the second lens 4 on optical axis I;
G23 is that these second lens 4 are to the 3rd clearance of lens 5 on optical axis I;
G34 is that the 3rd lens 5 are to the 4th clearance of lens 6 on optical axis I;
Gaa is that this first lens 3 is summed up five clearances on optical axis I to the 6th lens 8;
ALT is this first lens 3, these second lens 4, the 3rd lens 5, the 4th lens 6, the 5th lens 7, and the thickness sum total of the 6th lens 8 on optical axis I; And
EFL is the effective focal length of this optical imaging lens 10.
Coordinate and consult Fig. 3 again, (a) longitudinal spherical aberration (longitudinal spherical aberration) of this first preferred embodiment of graphic explanation, (b) with graphic this first preferred embodiment astigmatic image error (astigmatism aberration) about the sagitta of arc (sagittal) direction on imaging surface 100 that illustrates respectively of (c), and the astigmatic image error of meridian (tangential) direction, (d) the graphic distortion aberration (distortion aberration) of this first preferred embodiment on imaging surface 100 that illustrate.In the longitudinal spherical aberration pictorial image 3 (a) of this first preferred embodiment, the curve that each wavelength becomes all very close to and close to centre, the Off-axis-light that each wavelength differing heights is described all concentrates near imaging point, skewness magnitude level by the curve of each wavelength can be found out, the imaging point deviation control of the Off-axis-light of differing heights is within the scope of ± 0.03mm, therefore the present embodiment obviously improves the spherical aberration of identical wavelength 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 make chromatic aberation also obtain obvious improvement.
In Fig. 3 (b) illustrates with two astigmatic image errors of 3 (c), three kinds represent in the drop on ± 0.15mm of focal length variations amount of wavelength in whole field range, illustrate that the optical system of this first preferred embodiment can effectively be eliminated aberration.The distortion aberration that the distortion aberration of Fig. 3 (d) is graphic shows this first preferred embodiment maintains ± 25% 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, foreshorten in system length under the condition of 12.31mm, preferably image quality still can be provided, therefore this first preferred embodiment can be under the condition that maintains favorable optical performance, shorten lens length to realize the product design of slimming more.
Consult Fig. 6, for one second preferred embodiment of optical imaging lens 10 of the present invention, it is roughly similar to this first preferred embodiment, wherein, the main difference part of this second preferred embodiment and this first preferred embodiment is: the lens that these second lens 4 are negative refractive index, and this is concave surface as side 42 and is aspheric surface; This of the 4th lens 6 is concave surface as side 62 and is aspheric surface; This of the 5th lens 7 has a convex surface part 721 and that is positioned at optical axis I near zone and is positioned at the concave surface portion 722 of circumference near zone as side 72.
As shown in Figure 8, and the total system focal length of this second preferred embodiment is 1.417mm to its detailed optical data, and half angle of view (HFOV) is that 60.0 °, f-number (Fno) are 2.62, and system length is 10.63mm
As shown in Figure 9, be the every asphericity coefficient in formula (1) as side 82 of thing side the 41 to the 6th lens 8 of these the second lens 4 of this second preferred embodiment.
In addition, in this optical imaging lens 10 of this second embodiment, the pass between each important parameter is:
G12=2.14；T2=0.52；G23=2.31；T3=0.91；
G34=0.89；T4=0.30；T5=1.16；T6=0.29；
ALT=3.67；Gaa=5.46；EFL=1.42；
ALT/T2=7.07；
Gaa/T6=18.96；
G23/T3=2.55；
Gaa/T4=18.26；
G23/T4=7.72；
Gaa/T3=6.03；
EFL/G34=1.60；
G23/G34=2.61；
ALT/G12=1.71；
ALT/G23=1.59；
T6/T2=0.55；
EFL/T4=4.74；
G23/T6=8.01；
ALT/EFL=2.59; And
T5/T4=3.88。
Coordinate and consult Fig. 7, by the astigmatic image error of the longitudinal spherical aberration of (a), (b), (c), and distortion aberration (d) is graphic finds out that this second preferred embodiment also can maintain favorable optical performance.
Consult Figure 10, for one the 3rd preferred embodiment of optical imaging lens 10 of the present invention, it is roughly similar to this first preferred embodiment, and wherein, the main difference part of the 3rd preferred embodiment and this first preferred embodiment is: this of these the second lens 4 is concave surface as side 42 and is aspheric surface; This of the 6th lens 8 is concave surface and for aspheric surface as side 82, and this has a concave surface portion 821 that is positioned at optical axis I near zone as side 82.
As shown in figure 12, and the total system focal length of this 3rd preferred embodiment is 1.448mm to its detailed optical data, and half angle of view (HFOV) is that 60.0 °, f-number (Fno) are 2.60, and system length is 10.80mm.
As shown in figure 13, be that the thing side 41 of these the second lens 4 of the 3rd preferred embodiment is to the every asphericity coefficient of picture side 82 in formula (1) of the 6th lens 8.
In addition, in this optical imaging lens 10 of the 3rd preferred embodiment, the pass between each important parameter is:
G12=0.99；T2=2.27；G23=1.80；T3=0.62；
G34=0.41；T4=0.45；T5=1.25；T6=0.82；
ALT=6.11；Gaa=3.29；EFL=1.45；
ALT/T2=2.69；
Gaa/T6=4.01；
G23/T3=2.90；
Gaa/T4=7.38；
G23/T4=4.03；
Gaa/T3=5.30；
EFL/G34=3.51；
G23/G34=4.35；
ALT/G12=6.16；
ALT/G23=3.40；
T6/T2=0.36；
EFL/T4=3.25；
G23/T6=2.19；
ALT/EFL=4.22; And
T5/T4=2.80。
Coordinate and consult Figure 11, by the astigmatic image error of the longitudinal spherical aberration of (a), (b), (c), and distortion aberration (d) is graphic finds out that this 3rd preferred embodiment also can maintain favorable optical performance.
Consulting Figure 14, is one the 4th preferred embodiment of optical imaging lens 10 of the present invention, and it is roughly similar to the 3rd preferred embodiment, only more or less some difference of parameter between each optical data, asphericity coefficient and these lens 3,4,5,6,7,8.
As shown in figure 16, and the total system focal length of this 4th preferred embodiment is 1.447mm to its detailed optical data, and half angle of view (HFOV) is that 60.0 °, f-number (Fno) are 2.62, and system length is 10.77mm.
As shown in figure 17, be that the thing side 41 of these the second lens 4 of the 4th preferred embodiment is to the every asphericity coefficient of picture side 82 in formula (1) of the 6th lens 8.
In addition, in this optical imaging lens 10 of the 4th preferred embodiment, the pass between each important parameter is:
G12=1.31；T2=1.53；G23=2.32；T3=0.38；
G34=0.45；T4=0.45；T5=1.29；T6=0.82；
ALT=5.17；Gaa=4.18；EFL=1.45；
ALT/T2=3.38；
Gaa/T6=5.07；
G23/T3=6.10；
Gaa/T4=9.24；
G23/T4=5.13；
Gaa/T3=10.99；
EFL/G34=3.19；
G23/G34=5.11；
ALT/G12=3.94；
ALT/G23=2.23；
T6/T2=0.54；
EFL/T4=3.20；
G23/T6=2.81；
ALT/EFL=3.57; And
T5/T4=2.85。
Coordinate and consult Figure 15, by the astigmatic image error of the longitudinal spherical aberration of (a), (b), (c), and distortion aberration (d) is graphic finds out that this 4th preferred embodiment also can maintain favorable optical performance.
Consulting Figure 18, is one the 5th preferred embodiment of optical imaging lens 10 of the present invention, and it is roughly similar to this first preferred embodiment.Wherein, the main difference part of the 5th preferred embodiment and this first preferred embodiment is: this of these the second lens 4 has a concave surface portion 421 and that is positioned at optical axis I near zone and be positioned at the convex surface part 424 of circumference near zone as side 42; This of the 3rd lens 5 is concave surface as side 52 and is aspheric surface.
As shown in figure 20, and the total system focal length of this 5th preferred embodiment is 1.456mm to its detailed optical data, and half angle of view (HFOV) is that 60.0 °, f-number (Fno) are 2.62, and system length is 10.86mm.
As shown in figure 21, be that the thing side 41 of these the second lens 4 of the 5th preferred embodiment is to the every asphericity coefficient of picture side 82 in formula (1) of the 6th lens 8.
In addition, in this optical imaging lens 10 of the 5th preferred embodiment, the pass between each important parameter is:
G12=1.54；T2=0.97；G23=2.74；T3=1.09；
G34=0.46；T4=0.27；T5=1.00；T6=0.31；
ALT=4.48；Gaa=4.83；EFL=1.46；
ALT/T2=4.62；
Gaa/T6=15.84；
G23/T3=2.51；
Gaa/T4=17.83；
G23/T4=10.10；
Gaa/T3=4.44；
EFL/G34=3.14；
G23/G34=5.91；
ALT/G12=2.90；
ALT/G23=1.64；
T6/T2=0.31；
EFL/T4=5.37；
G23/T6=8.97；
ALT/EFL=3.08; And
T5/T4=3.67。
Coordinate and consult Figure 19, by the astigmatic image error of the longitudinal spherical aberration of (a), (b), (c), and distortion aberration (d) is graphic finds out that this 5th preferred embodiment also can maintain favorable optical performance.
Consulting Figure 22, is one the 6th preferred embodiment of optical imaging lens 10 of the present invention, and it is roughly similar to the 3rd preferred embodiment.Wherein, the main difference part of the 6th preferred embodiment and the 3rd preferred embodiment is: this of these the second lens 4 has a convex surface part 425 and that is positioned at optical axis I near zone and be positioned at the concave surface portion 422 of circumference near zone as side 42.
As shown in figure 24, and the total system focal length of this 6th preferred embodiment is 1.450mm to its detailed optical data, and half angle of view (HFOV) is that 62.0 °, f-number (Fno) are 2.60, and system length is 10.81mm.
As shown in figure 25, be that the thing side 41 of these the second lens 4 of the 6th preferred embodiment is to the every asphericity coefficient of picture side 82 in formula (1) of the 6th lens 8.
In addition, in this optical imaging lens 10 of the 6th preferred embodiment, the pass between each important parameter is:
G12=1.65；T2=0.86；G23=2.66；T3=0.56；
G34=0.37；T4=0.62；T5=0.99；T6=0.80；
ALT=4.63；Gaa=4.77；EFL=1.45；
ALT/T2=5.36；
Gaa/T6=6.00；
G23/T3=4.73；
Gaa/T4=7.70；
G23/T4=4.29；
Gaa/T3=8.49；
EFL/G34=3.89；
G23/G34=7.13；
ALT/G12=2.81；
ALT/G23=1.74；
T6/T2=0.92；
EFL/T4=2.34；
G23/T6=3.35；
ALT/EFL=3.19; And
T5/T4=1.60。
Coordinate and consult Figure 23, by the astigmatic image error of the longitudinal spherical aberration of (a), (b), (c), and distortion aberration (d) is graphic finds out that this 6th preferred embodiment also can maintain favorable optical performance.
Consulting Figure 26, is one the 7th preferred embodiment of optical imaging lens 10 of the present invention, and it is roughly similar to the 3rd preferred embodiment.Wherein, the main difference part of the 7th preferred embodiment and the 3rd preferred embodiment is: this of the 4th lens 6 is concave surface as side 42 and is aspheric surface.
As shown in figure 28, and the total system focal length of this 7th preferred embodiment is 1.454mm to its detailed optical data, and half angle of view (HFOV) is that 62.0 °, f-number (Fno) are 2.60, and system length is 10.78mm.
As shown in figure 29, be that the thing side 41 of these the second lens 4 of the 7th preferred embodiment is to the every asphericity coefficient of picture side 82 in formula (1) of the 6th lens 8.
In addition, in this optical imaging lens 10 of the 7th preferred embodiment, the pass between each important parameter is:
G12=1.44；T2=2.41；G23=0.76；T3=0.80；
G34=0.20；T4=0.73；T5=1.00；T6=0.35；
ALT=5.99；Gaa=2.49；EFL=1.45；
ALT/T2=2.48；
Gaa/T6=7.22；
G23/T3=0.95；
Gaa/T4=3.42；
G23/T4=1.05；
Gaa/T3=3.12；
EFL/G34=7.31；
G23/G34=3.82；
ALT/G12=4.15；
ALT/G23=7.87；
T6/T2=0.14；
EFL/T4=2.00；
G23/T6=2.21；
ALT/EFL=4.12; And
T5/T4=1.37。
Coordinate and consult Figure 27, by the astigmatic image error of the longitudinal spherical aberration of (a), (b), (c), and distortion aberration (d) is graphic finds out that this 7th preferred embodiment also can maintain favorable optical performance.
Consulting Figure 30, is one the 8th preferred embodiment of optical imaging lens 10 of the present invention, and it is roughly similar to this first preferred embodiment.Wherein, the main difference part of the 8th preferred embodiment and this first preferred embodiment is: this second lens 4 are the lens of negative refractive index, and this has a concave surface portion 421 and that is positioned at optical axis I near zone and be positioned at the convex surface part 424 of circumference near zone as side 42; This of the 3rd lens 5 has a convex surface part 521 and that is positioned at optical axis I near zone and is positioned at the concave surface portion 522 of circumference near zone as side 52; This of the 5th lens 7 has a convex surface part 721 and that is positioned at optical axis I near zone and is positioned at the concave surface portion 722 of circumference near zone as side 72.
Shown in figure 32, and the total system focal length of this 8th preferred embodiment is 1.432mm to its detailed optical data, and half angle of view (HFOV) is that 62.0 °, f-number (Fno) are 2.62, and system length is 10.70mm.
As shown in figure 29, be that the thing side 41 of these the second lens 4 of the 8th preferred embodiment is to the every asphericity coefficient of picture side 82 in formula (1) of the 6th lens 8.
In addition, in this optical imaging lens 10 of the 8th preferred embodiment, the pass between each important parameter is:
G12=1.90；T2=0.50；G23=1.56；T3=1.65；
G34=0.78；T4=0.20；T5=1.26；T6=0.39；
ALT=5.00；Gaa=4.31；EFL=1.43；
ALT/T2=10.00；
Gaa/T6=11.08；
G23/T3=0.94；
Gaa/T4=21.56；
G23/T4=7.80；
Gaa/T3=2.61；
EFL/G34=1.83；
G23/G34=1.99；
ALT/G12=2.63；
ALT/G23=3.21；
T6/T2=0.78；
EFL/T4=7.16；
G23/T6=4.01；
ALT/EFL=3.49; And
T5/T4=6.31。
Coordinate and consult Figure 31, by the astigmatic image error of the longitudinal spherical aberration of (a), (b), (c), and distortion aberration (d) is graphic finds out that this 8th preferred embodiment also can maintain favorable optical performance.
Coordinate and consult Figure 34 again, for the tabular drawing of every optical parametric of above-mentioned eight preferred embodiments, in the time that the relational expression between the every optical parametric in optical imaging lens 10 of the present invention meets following conditional, under the situation shortening in system length, still have preferably optical property performance, while making the present invention be applied to relevant portable electronic devices, can make the product of slimming more:
(1) ALT/T2≤10.5, in the situation that lens length shortens, this first lens 3, these second lens 4, the 3rd lens 5, the 4th lens 6, the 5th lens 7, and the thickness of the 6th lens 8 on optical axis I sum total ALT should be towards the direction design that becomes little, and the optics effective diameter of these second lens 4 in optical imaging lens 10 is larger, so these second lens 4 design compared with thick and relatively good making, the ratio that therefore thickness T 2 of these second lens 4 on optical axis I shortens is little compared with ALT.Preferably, 2.0≤ALT/T2≤10.5.
(2) Gaa/T6≤3.5, the optics effective diameter of the 6th lens 8 in optical imaging lens 10 is less, so can do thinlyyer, therefore the large percentage that the thickness T 6 of the 6th lens 8 on optical axis I can shorten, but because the optics of these the second lens 4 of the design's optical imaging lens 10 has, compared with footpath, the optics effective diameter of the 3rd lens 5 is much larger, therefore the light penetrating from these second lens 4 needs larger clearance could in suitable height, be incident in the optics effective diameter of the 3rd lens 5, therefore these second lens 4 are less with the ratio that the clearance G23 of the 3rd lens 5 on optical axis I can dwindle, although but the clearance on optical axis I can dwindle again between other lens, but for this first lens 3 to the 6th lens 8 for the sum total of five clearances on optical axis I Gaa the contribution degree of shortening ratio little, so the ratio that Gaa can shorten is still less, therefore meet this pass formula.Preferably, 3.5≤Gaa/T6≤20.0.
(3) 0.9≤G23/T3≤6.5, 0.9≤G23/T4≤30.0, G23 is same as above, the ratio that can shorten is less, and the 3rd lens 5 and the 4th lens 6 are because optics effective diameter is less, so large percentage that the thickness T 3 of the 3rd lens 5 on optical axis I and the thickness T 4 of the 4th lens 6 on optical axis I can shorten, so consider optical property and manufacturing capacity, the ratio of G23/T3 must be limited between 0.9～6.5, the ratio of G23/T4 must be limited between 0.9～30.0, have preferably configuration, wherein, what the ratio of G23/T4 was better will be between 0.9～12.0.
(4) Gaa/T4≤3.0, Gaa is same as above, and the ratio that can shorten is less, and T4 is same as above, and the large percentage that can shorten, therefore meet this pass formula.Preferably, 3.0≤Gaa/T4≤23.0.
(5) Gaa/T3≤2.6, Gaa is same as above, and the ratio that can shorten is less, and T3 is same as above, and the large percentage that can shorten, therefore meet this pass formula.Preferably, 2.6≤Gaa/T3≤11.5.
(6) EFL/G34≤1.6, to the 4th lens 6, the clearance G34 on optical axis I limits without the face type of adjacent lens the 3rd lens 5 in design, so large percentage that can shorten, and the effective focal length EFL of this optical imaging lens 10 considers size and the manufacturing capacity of field angle, can there is the restriction of shortening, therefore meet this pass formula.Preferably, 1.6≤EFL/G34≤7.8.
(7) 1.0≤G23/G34, G23 is same as above, and the ratio that can shorten is less, and G34 is more unrestricted, thus the large percentage that can shorten, therefore meet this pass formula.Preferably, 1.0≤G23/G34≤7.8.
(8) 1.3≤ALT/G12≤4.2, this first lens 3, these second lens 4, the 3rd lens 5, the 4th lens 6, the 5th lens 7, and the thickness of the 6th lens 8 on optical axis I sum total ALT is same as above, should be towards the direction design that becomes little, this first lens 3 must keep a certain size to make optical property can meet demand with the clearance G12 of these second lens 4 on optical axis, but consider manufacturing capacity and lens length, ALT can not infinitely dwindle, G12 can not infinitely expand, and being has preferably configuration with ALT/G12 at 1.3～4.2.
(9) ALT/G23≤11.5, same as above, ALT should be towards the direction design that becomes little, and G23 cannot dwindle, therefore meet this relational expression.Preferably, 1.0≤ALT/G23≤11.5.
(10) T6/T2≤1.2, the optics of the 6th lens 8 has less compared with footpath, the optics effective diameter of these the second lens 4 is larger, so the thickness T 6 of the 6th lens 8 on optical axis should become little design, the thickness T 2 of these second lens 4 on optical axis should maintain certain value in order to manufacture, therefore meet this pass formula.Preferably, 0.05≤T6/T2≤1.2.
(11) 2.0≤EFL/T4≤15.0, the effective focal length EFL of this optical imaging lens 10 considers size and the manufacturing capacity of field angle, can there is the restriction of shortening, can do thinlyyer and T4 is same as above, but consider optical property and manufacturing capacity, between 2.0～15.0, have preferably configuration.
(12) G23/T6≤2.15, same as above, the ratio that G23 dwindles is less, and the large percentage that T6 shortens, therefore meet this pass formula.Preferably, 2.15≤G23/T6≤9.3.
(13) ALT/EFL≤5.5, same as above, the ALT little design that should become, and EFL can have the restriction of shortening, therefore meet this pass formula.Preferably, 2.0≤ALT/EFL≤5.5.
(14) T5/T4≤1.3, the 5th lens 7 are because it has convex surface part 521 as side 72 at optical axis I near zone, so have inborn restriction in the ratio that the thickness T 5 of the 5th lens 7 on optical axis I dwindled, the thickness T 4 of the 4th lens 6 on optical axis I is without this restriction, so the large percentage that can shorten, therefore meet this pass formula.Preferably, 1.3≤T5/T4≤6.7.
Conclude above-mentionedly, optical imaging lens 10 of the present invention, can obtain following effect and advantage, therefore can reach object of the present invention:
One, have a convex surface part 311 at optical axis I near zone by this thing side 31 of this first lens 3, this has a concave surface portion 321 at optical axis I near zone as side 32, helps this optical imaging lens 10 optically focused.
Two, this thing side 41 of these the second lens 4 has a convex surface part 411 at optical axis I near zone; This thing side 51 of the 3rd lens 5 has a convex surface part 511 at optical axis I near zone; This thing side 71 of the 5th lens 7 has a convex surface part 711 at circumference near zone, and this has a convex surface part 721 at optical axis I near zone as side 72; This of the 6th lens 8 has a concave surface portion 821 at optical axis I near zone as side 82, and material is plastics; Mutually the arrange in pairs or groups better effects if of the correction aberration that can make this optical imaging lens 10 of the condition of said lens, and the weight of this optical imaging lens 10 of favourable attenuating and reduce manufacturing cost.
Three, by the explanation of aforementioned eight preferred embodiments, show the design of optical imaging lens 10 of the present invention, the system length of its these preferred embodiments all can shorten to and be less than below 13mm, compared to existing optical imaging lens, apply the product that camera lens of the present invention can produce more slimming, the economic benefit that the present invention is had accord with the demands of the market.
Consulting Figure 35, is one first preferred embodiment of the electronic installation 1 of this optical imaging lens 10 of application of aforementioned, and this electronic installation 1 comprises a casing 11, and an image module 12 being arranged in this casing 11.Be only that this electronic installation 1 is described as an example of mobile phone example at this, but the pattern of this electronic installation 1 is not as limit.
This image module 12 comprises foregoing this optical imaging lens 10, a lens barrel arranging for this optical imaging lens 10 of confession 21, a module back seat unit 120 arranging for this lens barrel 21 of confession, and one is arranged at the image sensor 130 of this optical imaging lens 10 as sides.This imaging surface 100 (seeing Fig. 2) is to be formed at this image sensor 130.
This module back seat unit 120 has a camera lens back seat 121, and an image sensor back seat 122 being arranged between this camera lens back seat 121 and this image sensor 130.Wherein, this lens barrel 21 is coaxially to arrange along an axis II with this camera lens back seat 121, and this lens barrel 21 is arranged at this camera lens back seat 121 inner sides.
Consult Figure 36, for one second preferred embodiment of the electronic installation 1 of this optical imaging lens 10 of application of aforementioned, the main difference of this electronic installation 1 of this second preferred embodiment and this first preferred embodiment is: this module back seat unit 120 is voice coil motor (VCM) pattern.This camera lens back seat 121 have one and these lens barrel 21 outsides fit and along the first pedestal 123 of an axis III setting, along this axis III and around the second pedestal 124, the coil 125 being arranged between these the first pedestal 123 outsides and this second pedestal 124 inner sides of these the first pedestal 123 arranged outside, an and magnet assembly 126 being arranged between these coil 125 outsides and this second pedestal 124 inner sides.
The first pedestal 123 of this camera lens back seat 121 can move along this axis III with this lens barrel 21 and this optical imaging lens 10 being arranged in this lens barrel 21.122 of this image sensor back seats fit with this second pedestal 124.Wherein, 9 of this optical filters are arranged on this image sensor back seat 122.Other modular constructions of the second preferred embodiment of this electronic installation 1 are similar with this electronic installation 1 of the first preferred embodiment, do not repeat them here.
By this optical imaging lens 10 is installed, because the system length of this optical imaging lens 10 can effectively shorten, make the first preferred embodiment of this electronic installation 1 and the thickness of the second preferred embodiment can relative decrease and then make the product of more slimming, and still can provide good optical property and image quality, by this, make this electronic installation 1 of the present invention except having the economic benefit that reduces casing raw material consumption, can also meet compact product design trend and consumption demand.
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, it is characterized in that: from thing side to sequentially comprising a first lens, one second lens, one the 3rd lens, one the 4th lens, one the 5th lens as side along an optical axis, and one the 6th lens, and this first lens to the 6th lens all have refractive index, and comprise one towards thing side and make thing side that imaging light passes through and one towards as side and picture side that imaging light is passed through;
This thing side of this first lens has a convex surface part that is positioned at optical axis near zone, and this has a concave surface portion that is positioned at optical axis near zone as side;
This thing side of these the second lens has a convex surface part that is positioned at optical axis near zone;
This thing side of the 3rd lens has a convex surface part that is positioned at optical axis near zone;
This thing side of the 5th lens has a convex surface part that is positioned at circumference near zone, and this has a convex surface part that is positioned at optical axis near zone as side; And
This of the 6th lens has a concave surface portion that is positioned at optical axis near zone as side, and the material of the 6th lens is plastics;
Wherein, the lens that this optical imaging lens has a refractive index only have six.
2. a kind of optical imaging lens according to claim 1, it is characterized in that: this first lens, these second lens, the 3rd lens, the 4th lens, the 5th lens, and the thickness sum total of the 6th lens on optical axis is ALT, the thickness of these the second lens on optical axis is T2, and meets following conditional: ATL/T2≤10.5.
3. a kind of optical imaging lens according to claim 2, it is characterized in that: to the 6th lens, five clearance sum totals on optical axis are Gaa to this first lens, the thickness of the 6th lens on optical axis is T6, and meets following conditional: Gaa/T6≤3.5.
4. a kind of optical imaging lens according to claim 3, is characterized in that: these second lens and the 3rd clearance of lens on optical axis are G23, and the thickness of the 3rd lens on optical axis is T3, meets following conditional: 0.9≤G23/T3≤6.5.
5. a kind of optical imaging lens according to claim 2, it is characterized in that: to the 6th lens, five clearance sum totals on optical axis are Gaa to this first lens, the thickness of the 4th lens on optical axis is T4, and meets following conditional: Gaa/T4≤3.0.
6. a kind of optical imaging lens according to claim 2, it is characterized in that: these second lens and the 3rd clearance of lens on optical axis are G23, the thickness of the 4th lens on optical axis is T4, meets following conditional: 0.9≤G23/T4≤30.0.
7. a kind of optical imaging lens according to claim 6, it is characterized in that: to the 6th lens, five clearance sum totals on optical axis are Gaa to this first lens, the thickness of the 3rd lens on optical axis is T3, and meets following conditional: Gaa/T3≤2.6.
8. a kind of optical imaging lens according to claim 1, is characterized in that: the effective focal length of this optical imaging lens is EFL, and the 3rd lens and the 4th clearance of lens on optical axis are G34, and meet following conditional: EFL/G34≤1.6.
9. a kind of optical imaging lens according to claim 8, it is characterized in that: these second lens and the 3rd clearance of lens on optical axis are G23, the 3rd lens and the 4th clearance of lens on optical axis are G34, and meet following conditional: G23/G34≤1.0.
10. a kind of optical imaging lens according to claim 9, it is characterized in that: this first lens, these second lens, the 3rd lens, the 4th lens, the 5th lens, and the thickness sum total of the 6th lens on optical axis is ALT, this first lens and this clearance of the second lens on optical axis are G12, and meet following conditional: 1.3≤ALT/G12≤4.2.
11. a kind of optical imaging lens according to claim 8, it is characterized in that: this first lens, these second lens, the 3rd lens, the 4th lens, the 5th lens, and the thickness sum total of the 6th lens on optical axis is ALT, these second lens and the 3rd clearance of lens on optical axis are G23, and meet following conditional: ALT/G23≤11.5.
12. a kind of optical imaging lens according to claim 11, is characterized in that: the thickness of these the second lens on optical axis is T2, and the thickness of the 6th lens on optical axis is T6, and meets following conditional: T6/T2≤1.2.
13. a kind of optical imaging lens according to claim 8, is characterized in that: the effective focal length of this optical imaging lens is EFL, and the thickness of the 4th lens on optical axis is T4, and meets following conditional: 2.0≤EFL/T4≤15.0.
14. a kind of optical imaging lens according to claim 13, is characterized in that: the thickness of the 6th lens on optical axis is T6, and these second lens and the 3rd clearance of lens on optical axis are G23, and meet following conditional: G23/T6≤2.15.
15. a kind of optical imaging lens according to claim 1, it is characterized in that: this first lens, these second lens, the 3rd lens, the 4th lens, the 5th lens, and the thickness sum total of the 6th lens on optical axis is ALT, the effective focal length of this optical imaging lens is EFL, and meets following conditional: ALT/EFL≤5.5.
16. a kind of optical imaging lens according to claim 15, it is characterized in that: this first lens, these second lens, the 3rd lens, the 4th lens, the 5th lens, and the thickness sum total of the 6th lens on optical axis is ALT, these second lens and the 3rd clearance of lens on optical axis are G23, and meet following conditional: 1.0≤ALT/G23≤11.5.
17. a kind of optical imaging lens according to claim 16, is characterized in that: the thickness of the 4th lens on optical axis is T4, and the thickness of the 5th lens on optical axis is T5, and meets following conditional: T5/T4≤1.3.
18. 1 kinds of electronic installations, is characterized in that: comprise a casing; An and image module, be mounted in this casing, and comprise just like claim 1 to the optical imaging lens described in any one in claim 17, for the lens barrel, that arranges for this optical imaging lens the module back seat unit for arranging for this lens barrel, an and image sensor that is arranged at the picture side of this optical imaging lens.
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