CN103135205B - Portable electronic device and optical imaging lens thereof - Google Patents
Portable electronic device and optical imaging lens thereof Download PDFInfo
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- CN103135205B CN103135205B CN201210432355.9A CN201210432355A CN103135205B CN 103135205 B CN103135205 B CN 103135205B CN 201210432355 A CN201210432355 A CN 201210432355A CN 103135205 B CN103135205 B CN 103135205B
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Abstract
The invention relates to a portable electronic device and an optical imaging lens thereof, and provides the optical imaging lens which sequentially comprises five lens from an object side to an image side, wherein an object side surface of a fifth lens comprises a concave surface portion located in an area nearby an optical axis, and an image side surface comprises a protrusion surface portion located in an area nearby circumference. The invention provides a portable electronic device which comprises a machine shell and an image module which is installed in the machine shell, wherein the image module is composed of the optical lens, a lens cone, a module rear base unit and an image sensor. By means of the fact that features of concave-convex curved surface array and/or curved optical rotation of all the lenses are controlled, the length of the lens is shortened under the condition that a good optical property and a system performance are maintained.
Description
Technical field
The present invention is relevant with its optical imaging lens to a kind of portable electronic devices, and especially relevant with its optical imaging lens to the portable electronic devices of application five chip lens.
Background technology
In recent years, miniaturization, the slimming of mobile phone (mobile phone) become designer trends, and the related development that have impact on related optical imaging lens of this trend.How effectively can reduce the system length of optical lens, still can maintain enough optical properties simultaneously, be the R&D direction that industry is made great efforts always.
U.S. Patent number US7,480,105, US7,639,432, US7,486,449 and US7,684,127 disclose the optical lens that a kind of five lens form all respectively, but, this US7, the refractive index of 480,105 first three sheet lens of Patent Case is respectively negative positive and negative, and US7,639,432 Patent Cases, US7,486,449 Patent Cases and US7,684,127 Patent Cases are then respectively negative just positive and negative and are just bearing and just bearing.But such configuration also cannot obtain good optical characteristics, and the lens system length of this four case drops on the length of about 10 ~ 18mm, and device entirety cannot be made to reach the effect of slim light and handyization.
U.S. Patent Publication No. US2011/0013069, US2011/0249346 and U.S. Patent number US8,000,030 also discloses the optical lens be made up of five lens, and the refractive index of its first three sheet lens is configured to preferably positive and negative negative.But because the configured in one piece of each lens also cannot take into account the length improved aberration and shorten camera lens, therefore under the prerequisite considering image quality, this optical imaging lens overall length also cannot effectively shorten.For example, the system total length of partial lens, still up to about 6.0mm, still haves much room for improvement.
In view of this, need the system length of effectively reduction optical lens at present badly, and maintain favorable optical performance simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of portable electronic devices and its optical imaging lens, by controlling the concave-convex curved surface arrangement of each lens and/or bending the characteristic of optical activity, and maintaining favorable optical performance and under maintaining the condition of system performance, shortening lens length.
According to the present invention, a kind of optical imaging lens is provided, sequentially comprises to image side from thing side: an aperture, one first lens, one second lens, one the 3rd lens, one the 4th lens and one the 5th lens.First lens have positive refractive index, and comprise one towards the thing side of thing side, this thing side is a convex surface.Second lens have negative refractive index, and the 3rd lens have negative refractive index.5th lens comprise one towards the thing side and of thing side towards the face, image side of image side, and this thing side comprises the concave part that is positioned at optical axis near zone, and this face, image side comprises the convex surface part that is positioned at circumference near zone.In this optical imaging lens, the eyeglass that entirety has refractive index only only has five lens.
According to one embodiment of the present invention, additionally can control the difference of other parameter or the relevance of ratio, as: (representing with AAG), the center thickness of the 5th lens on optical axis are summed up (with CT in four clearances optionally controlled between the first lens and the 5th lens on optical axis
5represent) meet following relational expression:
AAG/CT
5>=3.0 relational expressions (1);
Or second clearance between lens and the 3rd lens on optical axis (with AGL
23represent) and clearance between the 4th lens and the 5th lens on optical axis (with AGL
45represent) meet following relational expression:
0≤AGL
23-AGL
45≤ 0.4 (mm) relational expression (2);
Or the effective focal length of optical imaging lens (Effective focal length) (representing with EFL) and the thickness summation (with ALT represent) of this five lens on optical axis
EFL/ALT >=1.8 relational expression (3); Or
EFL/ALT >=1.9 relational expression (3');
Or the center thickness of the 4th lens on optical axis is (with CT
4represent) and the back focal length (Back focal length) (representing with BFL) of optical imaging lens meet following relational expression:
CT
4/ BFL≤0.7 relational expression (4); Or
CT
4/ BFL≤0.5 relational expression (4');
Or ALT and BFL meets following relational expression:
ALT/BFL≤2.0 relational expression (5); Or
ALT/BFL≤1.5 relational expression (5');
Or CT
4with AGL
23meet following relational expression:
CT
4/ AGL
23≤ 3.0 relational expressions (6);
Aforementioned listed exemplary qualified relation formula also optionally merges and is applied in embodiments of the invention, is not limited to this.
According to one embodiment of the present invention, the thin portion structures such as the concave-convex curved surface arrangement of other more lens can be gone out for multiple lens additional designs for single lens or popularity, to strengthen the control to system performance and/or resolution, as: for the 4th lens, design one towards the thing side of thing side, make this thing side comprise the concave part that is positioned at circumference near zone; Or for the second lens, design one towards the thing side of thing side, make this thing side comprise the convex surface part that is positioned at circumference near zone, be so not limited thereto.
The present invention according to aforesaid various optical imaging lens, can provide a kind of electronic installation, comprising: a casing and an image module are installed in this casing.Image module comprises according to arbitrary optical imaging lens of the present invention, a lens barrel, a module rear seat unit, a substrate and an image sensor.Lens barrel arranges optical imaging lens with supply, and module rear seat unit arranges lens barrel with supply, and substrate arranges module rear seat unit with supply, and image sensor is the image side being arranged at substrate and being positioned at optical imaging lens.
According to one embodiment of the present invention, aforementioned modules rear seat unit can arrange lens barrel with supply and can move along the optical axis direction of optical imaging lens including but not limited to a pedestal.
Can learn in above-mentioned, portable electronic devices of the present invention and its optical imaging lens, by controlling the concave-convex curved surface arrangement of each lens and/or bending the design of optical activity, to maintain favorable optical performance, and effectively shorten lens length.
Accompanying drawing explanation
Fig. 1 represents the cross-sectional view of five chip lens of the optical imaging lens according to the first embodiment of the present invention.
Fig. 2 represents the longitudinal spherical aberration of the optical imaging lens of the foundation first embodiment of the present invention and every aberration diagram schematic diagram.
Fig. 3 represents another cross-sectional view of lens of the optical imaging lens according to the first embodiment of the present invention.
Fig. 4 represents the detailed optical data of each eyeglass according to first embodiment of the present invention optical imaging lens.
Fig. 5 represents the aspherical surface data of the optical imaging lens according to the first embodiment of the present invention.
Fig. 6 represents the cross-sectional view of five chip lens of the optical imaging lens according to the second embodiment of the present invention.
Fig. 7 represents the longitudinal spherical aberration of foundation second embodiment of the present invention optical imaging lens and every aberration diagram schematic diagram.
Fig. 8 represents the detailed optical data of each eyeglass of the optical imaging lens according to the second embodiment of the present invention.
Fig. 9 represents the aspherical surface data of the optical imaging lens according to the second embodiment of the present invention.
Figure 10 represents the cross-sectional view of five chip lens of the optical imaging lens according to the third embodiment of the present invention.
Figure 11 represents the longitudinal spherical aberration of foundation third embodiment of the present invention optical imaging lens and every aberration diagram schematic diagram.
Figure 12 represents the detailed optical data of each eyeglass of the optical imaging lens according to the third embodiment of the present invention.
Figure 13 represents the aspherical surface data of the optical imaging lens according to the third embodiment of the present invention.
Figure 14 represents the cross-sectional view of five chip lens of the optical imaging lens according to the fourth embodiment of the present invention.
Figure 15 represents the longitudinal spherical aberration of foundation fourth embodiment of the present invention optical imaging lens and every aberration diagram schematic diagram.
Figure 16 represents the detailed optical data of each eyeglass of the optical imaging lens according to the fourth embodiment of the present invention.
Figure 17 represents the aspherical surface data of the optical imaging lens according to the fourth embodiment of the present invention.
Figure 18 represents the cross-sectional view of five chip lens of the optical imaging lens according to the fifth embodiment of the present invention.
Figure 19 represents the longitudinal spherical aberration of foundation fifth embodiment of the present invention optical imaging lens and every aberration diagram schematic diagram.
Figure 20 represents the detailed optical data of each eyeglass of the optical imaging lens according to the fifth embodiment of the present invention.
Figure 21 represents the aspherical surface data of the optical imaging lens according to the fifth embodiment of the present invention.
Figure 22 represents the cross-sectional view of five chip lens of the optical imaging lens according to the sixth embodiment of the present invention.
Figure 23 represents the longitudinal spherical aberration of foundation sixth embodiment of the present invention optical imaging lens and every aberration diagram schematic diagram.
Figure 24 represents the detailed optical data of each eyeglass of the optical imaging lens according to the sixth embodiment of the present invention.
Figure 25 represents the aspherical surface data of the optical imaging lens according to the sixth embodiment of the present invention.
AAG/the CT according to above six embodiments of the present invention shown by Figure 26
5, AGL
23-AGL
45, EFL/ALT, CT
4/ BFL, ALT/BFL and CT
4/ AGL
23the comparison sheet of value.
Figure 27 represents a structural representation of the portable electronic devices according to one embodiment of the invention.
Figure 28 represents a structural representation of the portable electronic devices according to another embodiment of the present invention.
[primary clustering symbol description]
Embodiment
For further illustrating each embodiment, the invention provides Figure of description.These Figure of description are a part for disclosure of the present invention, and it is mainly in order to illustrate embodiment, and the associated description of instructions can be coordinated to explain the operation principles of embodiment.Coordinate with reference to these contents, this area has knows that the knowledgeable will be understood that other possible embodiment and advantage of the present invention usually.Assembly in figure not drawn on scale, and similar element numbers is commonly used to assembly like representation class.
Optical imaging lens of the present invention, be made up of one first lens sequentially arranged from thing side to image side, one second lens, one the 3rd lens, one the 4th lens and one the 5th lens, the eyeglass that entirety has refractive index only only has five lens.Through the detail characteristic of each lens of design, and can provide good optical property, and shorten lens length, the detail characteristic of each lens is as follows: the first lens have positive refractive index, and comprise one towards the thing side of thing side, this thing side is a convex surface.Second lens have negative refractive index, and the 3rd lens have negative refractive index.5th lens comprise one towards the thing side and of thing side towards the face, image side of image side, and this thing side comprises the concave part that is positioned at optical axis near zone, and this face, image side comprises the convex surface part that is positioned at circumference near zone.
Mainly consider optical characteristics and the lens length of optical imaging lens in the characteristic of aforementioned each eyeglass of this design, for example: the first lens have positive refractive index, the positive refractive index needed for optical imaging lens entirety can be provided.Second lens and the 3rd lens all have negative refractive index, contribute to the aberration that improvement first lens produce, and the 5th lens thing side of can jointly arranging in pairs or groups is in concave part and face, the image side convex surface part near circumference of optical axis near zone, reaches the effect improving aberration.In addition, if further, the second lens thing side surface circumference near zone is designed to have convex surface part, or the 4th lens thing side surface circumference near zone design is had concave part, also can reach the effect improving aberration equally.
In one embodiment of this invention, also can additionally be controlled other along the lens thickness on optical axis and/or the relevance along the lens thickness on optical axis and airspace summation, as: (representing with AAG), the center thickness of the 5th lens on optical axis are summed up (with CT in four clearances optionally controlled between the first lens and the 5th lens on optical axis
5represent) meet following relational expression:
AAG/CT
5>=3.0 relational expressions (1);
Or second clearance between lens and the 3rd lens on optical axis (with AGL
23represent) and clearance between the 4th lens and the 5th lens on optical axis (with AGL
45represent) meet following relational expression:
0≤AGL
23-AGL
45≤ 0.4 (mm) relational expression (2);
Or the effective focal length of optical imaging lens (Effective focal length) (representing with EFL) and the thickness summation (with ALT represent) of this five lens on optical axis
EFL/ALT >=1.8 relational expression (3); Or
EFL/ALT >=1.9 relational expression (3');
Or the center thickness of the 4th lens on optical axis is (with CT
4represent) and the back focal length (Back focal length) (representing with BFL) of optical imaging lens meet following relational expression:
CT
4/ BFL≤0.7 relational expression (4); Or
CT
4/ BFL≤0.5 relational expression (4');
Or ALT and BFL meets following relational expression:
ALT/BFL≤2.0 relational expression (5); Or
ALT/BFL≤1.5 relational expression (5');
Or CT
4with AGL
23meet following relational expression:
CT
4/ AGL
23≤ 3.0 relational expressions (6);
Aforementioned listed exemplary qualified relation also optionally merges and is applied in embodiments of the invention, is not limited to this.
AAG/CT
5value is preferably and is more than or equal to 3 to meet foregoing relationships (1), as enough thin (the i.e. CT of the thickness of the 5th lens near optical axis
5enough little), and face, image side is when circumference near zone has convex surface part, and its refractive index near optical axis and near circumference will be obviously different, imaging light so can be made to focus on as much as possible on same plane, contribute to improving image quality.Under the designer trends that optical imaging lens is compact, AAG and CT
5though will reduce together, but work as CT
5the amplitude that reduces comparatively AAG more remarkable (namely AAG is larger) time, such as AAG/CT
5when being more than or equal to 3, its effect improving image quality is quite obvious, in addition, and suggestion control AAG/CT
5value is between 3 ~ 10.
AGL
23-AGL
45value suggestion is more than or equal to 0 (mm), that is the spacing between the second lens and the 3rd lens is greater than the spacing between the 4th lens and the 5th lens.Negative refractive index due to the second lens diverges to picture light, if therefore possess enough distance between the second lens and the 3rd lens, can make imaging light after being dissipated into suitable degree, then enter the 3rd lens, contributes to improving image quality.The spacing shortened between the 4th lens and the 5th lens can contribute to shortening system overall length, therefore AGL
23-AGL
45suggestion should be greater than 0 (mm), but AGL
23with AGL
45difference also unsuitable excessive, be preferably between 0 ~ 0.4 (mm) to meet foregoing relationships (2).
The suggestion of EFL/ALT value is more than or equal to 1.5, is because the shortening of EFL can make imaging light at shorter distance inner focusing, contribute to the length of shortening system, but EFL can changes along with the gross thickness of eyeglass (i.e. ALT).Under the designer trends that optical imaging lens is compact, when EFL/ALT is greater than 1.5, EFL and ALT can obtain good collocation, be preferably and EFL/ALT value is controlled as between 1.8 ~ 5.0 or 1.9 ~ 5.0, to meet foregoing relationships (3) or foregoing relationships (3').
CT
4the suggestion of/BFL value is less than or equal to 0.7 to meet foregoing relationships (4), is due to CT
4reduce and can contribute to shortening optical imaging lens total length, and the Numerical Control of BFL can contribute to the space retaining infrared filter, therefore preferably makes CT
4(4')/BFL meets foregoing relationships, more preferably makes it between 0.1 ~ 0.5.
The suggestion of ALT/BFL value is less than or equal to 2.0 to meet foregoing relationships (5), is because the reduction of ALT contributes to shortening camera lens total length, meets the designer trends that optical imaging lens is compact.But, the 5th between lens and imaging surface (both are BFL along the spacing of optical axis), in certain embodiments, the sufficient space holding infrared filter need be retained, but the present invention is not limited thereto.Therefore, when ALT/BFL is greater than 2.0, may be caused because ALT is excessive or BFL is too small, the trend of design cannot be met, therefore be preferably and make ALT/BFL value meet foregoing relationships (5'), or more preferably, make ALT/BFL value between 0.2 ~ 1.5.
CT
4/ AGL
23suggestion is less than or equals 3.0 to meet foregoing relationships (6), and this is due to CT
4reduce and can contribute to shortening camera lens total length, and AGL
23numerical Control imaging light can be made to enter the 3rd lens again being expanded to suitable degree.Goodly make CT
4/ AGL
23value is between 0.5 ~ 3.0.
When implementing of the present invention, except above-mentioned relevance, also thin portion's structure and/or the optical activitys in the wrong such as the concave-convex curved surface arrangement of other more lens can be gone out for multiple lens additional designs for single lens or popularity, to strengthen the control to system performance and/or resolution, as following multiple embodiment.It is noted that, the characteristics such as the exemplary thin portion structure listed by this and/or optical activity in the wrong also under conflict free situation, optionally can merge and are applied in the middle of other embodiments of the invention, be not limited to this.
In order to illustrate that the present invention while providing good optical property, can shorten lens length, below provide multiple embodiment and its detailed optical data really.First please also refer to Fig. 1 to Fig. 5, wherein Fig. 1 represents the cross-sectional view of five chip lens of the optical imaging lens according to the first embodiment of the present invention; Fig. 2 represents the longitudinal spherical aberration of the optical imaging lens of the foundation first embodiment of the present invention and every aberration diagram schematic diagram; Fig. 3 represents another cross-sectional view of lens of the optical imaging lens according to the first embodiment of the present invention; Fig. 4 represents the detailed optical data of each eyeglass according to first embodiment of the present invention optical imaging lens; Fig. 5 represents the aspherical surface data of the optical imaging lens according to the first embodiment of the present invention.As shown in fig. 1, the optical imaging lens 1 of the present embodiment sequentially comprises from thing side A1 to image side A2 and is placed in an aperture (Aperture Stop) 100,1 first lens 110,1 second lens 120, the 3rd lens 130, the 4th lens 140 between object side and one first lens 110 and one the 5th lens 150.One imaging surface 170 of one optical filtering part 160 and an image sensor is all arranged at the image side A2 of optical imaging lens 1.Optical filtering part 160 is exemplarily an infrared filter (IR Cut Filter) at this, be located between the 5th lens 150 and imaging surface 170, light through optical imaging lens 1 is filtered out the wavelength of specific band by optical filtering part 160, as: filter out infrared ray wave band, the wavelength of the infrared ray wave band that human eye can be made to can't see can not image on imaging surface 170.
The thin portion structure of each lens of optical imaging lens 1 is as follows:
First lens 110 have positive refractive index, and it is formed by plastic material, and have one towards the thing side 111 and of thing side A1 towards the face, image side 112 of image side A2.Thing side 111 is a convex surface, and face, image side 112 is a concave surface.
Second lens 120 have negative refractive index, and it is formed by plastic material, and have one towards the thing side 121 and of thing side A1 towards the face, image side 122 of image side A2.Thing side 121 is a convex surface, and face, image side 122 is a concave surface.Thing side 121 also has a convex surface part 1212 at circumference near zone.
3rd lens 130 have negative refractive index, and it is formed by plastic material, and have one towards the thing side 131 and of thing side A1 towards the face, image side 132 of image side A2.Thing side 131 is a concave surface, and face, image side 132 is a convex surface.
4th lens 140 have positive refractive index, and it is formed by plastic material, and have one towards thing side A1 thing side 141 and have one towards the face, image side 142 of image side A2.Thing side 141 is a concave surface, and face, image side 142 is a convex surface.Thing side 141 also has a concave part 1412 at circumference near zone.
5th lens 150 have negative refractive index, and it is formed by plastic material, and have one towards the thing side 151 of thing side A1, and one towards the face, image side 152 of image side A2.Thing side 151 is a concave surface, and face, image side 152 has a concave part 1521 at optical axis near zone and a convex surface part 1522 at circumference near zone.
In the present embodiment, design lens, optical filtering part 160, and all there is airspace between the imaging surface 170 of image sensor, as: there is airspace d1 between the first lens 110 and the second lens 120, airspace d2 is there is between second lens 120 and the 3rd lens 130, airspace d3 is there is between 3rd lens 130 and the 4th lens 140, airspace d4 is there is between 4th lens 140 and the 5th lens 150, airspace d5 is there is between 5th lens 150 and optical filtering part 160, and there is airspace d6 between the imaging surface 170 of optical filtering part 160 and image sensor, but in other embodiments, also aforementioned wherein arbitrary airspace can not be had, as: be corresponding each other by the surface profile design of two relative lens, and can fit each other, to eliminate airspace therebetween.It can thus be appreciated that the summation of airspace d1, d2, d3, d4 is AAG.
About each optical characteristics of each lens in the optical imaging lens 1 of the present embodiment and the thickness of each airspace, please refer to Fig. 4, wherein AAG/CT
5, AGL
23-AGL
45, EFL/ALT, CT
4/ BFL, ALT/BFL and CT
4/ AGL
23value be respectively:
AAG/CT
5=3.104, really meet relational expression (1);
AGL
23-AGL
45=0.250 (mm), meets relational expression (2) really;
EFL/ALT=2.006, meets relational expression (3), (3') really;
CT
4/ BFL=0.414, meets relational expression (4), (4') really;
ALT/BFL=1.369, meets relational expression (5), (5') really;
CT
4/ AGL
23=1.268, really meet relational expression (6);
Be 4.876 (mm) from the thickness of the first lens thing side convex surface 111 to imaging surface 170, really shorten the lens length of optical imaging lens 1.
It is noted that at this, in the present invention, show the structure of each lens for the sake of simplicity, be only shown as the part passed through as light, for example, for the first lens 110, as shown in Figure 1, comprise thing side 111 and face, image side 112.But, when implementing each lens of the present embodiment, optionally additionally comprising a fixed part, being arranged in this optical imaging lens for these some lens.Same for the first lens 110, please refer to Fig. 3, it shows the first lens 110 and also comprises a fixed part, be from thing side convex surface and image side convex surface toward an extension 113 of extension in this example, be assembled in optical imaging lens 1 for the first lens 110, desirable light can not pass through extension 113, and the structure of this fixed part and profile need not be limited to this.
The thing side 131 of the thing side 111 of the first lens 110 and the thing side 121 of face, image side 112, second lens 120 and face, image side 122, the 3rd lens 130 and face, image side 132, the thing side 141 of the 4th lens 140 and the thing side 151 of face, image side 142 and the 5th lens 150 and face, image side 152, amounting to ten aspheric surfaces is all according to following aspheric curve formula definition:
Wherein:
R represents the radius-of-curvature of lens surface;
Z represents the aspheric degree of depth (in aspheric surface, distance optical axis is the point of Y, its be tangential on the tangent plane on summit on aspheric surface optical axis, vertical range between the two);
Y represents the vertical range of point on non-spherical surface and optical axis;
K is conical surface coefficient (Conic Constant);
A
iit is the i-th rank asphericity coefficient.
Each aspheric parameter detailed data is please also refer to Fig. 5.
On the other hand, in the middle of Fig. 2, the performance of astigmatic image error (c) in astigmatic image error (astigmatism aberration) (b), meridian (tangential) direction in longitudinal spherical aberration (longitudinal spherical aberration) (a), the sagitta of arc (sagittal) direction of the optical imaging lens 1 of the present embodiment or distortion aberration (distortion aberration) (d) is all very good.Therefore, can learn in above-mentioned, the optical imaging lens 1 of the present embodiment can maintain favorable optical performance really, and effectively shortens lens length.
Another please also refer to Fig. 6 to Fig. 9, wherein Fig. 6 represents the cross-sectional view of five chip lens of the optical imaging lens according to the second embodiment of the present invention; Fig. 7 represents the longitudinal spherical aberration of foundation second embodiment of the present invention optical imaging lens and every aberration diagram schematic diagram; Fig. 8 represents the detailed optical data of each eyeglass of the optical imaging lens according to the second embodiment of the present invention; Fig. 9 represents the aspherical surface data of the optical imaging lens according to the second embodiment of the present invention.Use the label similar to the first embodiment to indicate similar assembly in the present embodiment, label beginning changes 2 into only as used herein, and such as the first lens thing side is the 211, first face, lens image side is 212, and other reference numerals does not repeat them here.As shown in Figure 6, the optical imaging lens 2 of the present embodiment sequentially comprises aperture 200,1 first lens 210,1 second lens 220, the 3rd lens 230, the 4th lens 240 and one the 5th lens 250 be placed between object side and one first lens 210 from thing side A1 to image side A2.
The refractive index of the second embodiment and concave-convex surface configure all identical with the first embodiment, and only radius-of-curvature, lens thickness and each air gap width are different.About each optical characteristics of each lens of the optical imaging lens 2 of the present embodiment and the thickness of each airspace, please refer to Fig. 8, wherein AAG/CT
5, AGL
23-AGL
45, EFL/ALT, CT
4/ BFL, ALT/BFL and CT
4/ AGL
23value be respectively:
AAG/CT
5=3.441, really meet relational expression (1);
AGL
23-AGL
45=0.050 (mm), meets relational expression (2) really;
EFL/ALT=1.936, meets relational expression (3), (3') really;
CT
4/ BFL=0.439, meets relational expression (4), (4') really;
ALT/BFL=1.408, meets relational expression (5), (5') really;
CT
4/ AGL
23=1.778, really meet relational expression (6);
Be 4.673 (mm) from the thickness of the first lens thing side convex surface 211 to imaging surface 270, really shorten the lens length of optical imaging lens 2.
On the other hand, in the middle of Fig. 7, the optical imaging lens 2 of the present embodiment is all very good in the performance of longitudinal spherical aberration (a), the astigmatic image error (b) in sagitta of arc direction, the astigmatic image error (c) of meridian direction or the aberration (d) that distorts.Therefore, can learn in above-mentioned, the optical imaging lens 2 of the present embodiment can maintain favorable optical performance really, and effectively shortens lens length.
Another please also refer to Figure 10 to Figure 13, wherein Figure 10 represents the cross-sectional view of five chip lens of the optical imaging lens according to the third embodiment of the present invention; Figure 11 represents the longitudinal spherical aberration of foundation third embodiment of the present invention optical imaging lens and every aberration diagram schematic diagram; Figure 12 represents the detailed optical data of each eyeglass of the optical imaging lens according to the third embodiment of the present invention; Figure 13 represents the aspherical surface data of the optical imaging lens according to the third embodiment of the present invention.Use the label similar to the first embodiment to indicate similar assembly in the present embodiment, label beginning changes 3 into only as used herein, and such as the first lens thing side is the 311, first face, lens image side is 312, and other reference numerals does not repeat them here.As shown in Figure 10, the optical imaging lens 3 of the present embodiment sequentially comprises aperture 300,1 first lens 310,1 second lens 320, the 3rd lens 330, the 4th lens 340 and one the 5th lens 350 be placed between object side and one first lens 310 from thing side A1 to image side A2.
The essential difference of the 3rd embodiment and the first embodiment is the concave part 3122 that the face, image side 312 of the first lens 310 of the 3rd embodiment comprises that a convex surface part 3121 and being positioned at optical axis near zone is positioned at circumference near zone, and the distance of the lens center thickness of each eyeglass of the 3rd embodiment and each airspace is more or less with the first embodiment, and some is different.About each optical characteristics of each lens of the optical imaging lens 3 of the present embodiment and the thickness of each airspace, please refer to Figure 12, wherein AAG/CT
5, AGL
23-AGL
45, EFL/ALT, CT
4/ BFL, ALT/BFL and CT
4/ AGL
23value be respectively:
AAG/CT
5=3.100, really meet relational expression (1);
AGL
23-AGL
45=0.320 (mm), meets relational expression (2) really;
EFL/ALT=1.994, meets relational expression (3), (3') really;
CT
4/ BFL=0.427, meets relational expression (4), (4') really;
ALT/BFL=1.423, meets relational expression (5), (5') really;
CT
4/ AGL
23=1.132, really meet relational expression (6);
Be 4.908 (mm) from the thickness of the first lens thing side convex surface 311 to imaging surface 370, really shorten the lens length of optical imaging lens 3.
On the other hand, in the middle of Figure 11, the optical imaging lens 3 of the present embodiment is all very good in the performance of longitudinal spherical aberration (a), the astigmatic image error (b) in sagitta of arc direction, the astigmatic image error (c) of meridian direction or the aberration (d) that distorts.Therefore, can learn in above-mentioned, the optical imaging lens 3 of the present embodiment can maintain favorable optical performance really, and effectively shortens lens length.
Another please also refer to Figure 14 to Figure 17, wherein Figure 14 represents the cross-sectional view of five chip lens of the optical imaging lens according to the fourth embodiment of the present invention; Figure 15 represents the longitudinal spherical aberration of foundation fourth embodiment of the present invention optical imaging lens and every aberration diagram schematic diagram; Figure 16 represents the detailed optical data of each eyeglass of the optical imaging lens according to the fourth embodiment of the present invention; Figure 17 represents the aspherical surface data of the optical imaging lens according to the fourth embodiment of the present invention.Use the label similar to the first embodiment to indicate similar assembly in the present embodiment, label beginning changes 4 into only as used herein, and such as the first lens thing side is the 411, first face, lens image side is 412, and other reference numerals does not repeat them here.As shown in Figure 14, the optical imaging lens 4 of the present embodiment sequentially comprises aperture 400,1 first lens 410,1 second lens 420, the 3rd lens 430, the 4th lens 440 and one the 5th lens 450 be placed between object side and one first lens 410 from thing side A1 to image side A2.
The refractive index of the 4th embodiment and concave-convex surface configure all identical with the 3rd embodiment, and only radius-of-curvature, lens thickness and each air gap width are different.About each optical characteristics of each lens of the optical imaging lens 4 of the present embodiment and the thickness of each airspace, please refer to Figure 16, wherein AAG/CT
5, AGL
23-AGL
45, EFL/ALT, CT
4/ BFL, ALT/BFL and CT
4/ AGL
23value be respectively:
AAG/CT
5=4.098, really meet relational expression (1);
AGL
23-AGL
45=0.182 (mm), meets relational expression (2) really;
EFL/ALT=2.054, meets relational expression (3), (3') really;
CT
4/ BFL=0.423, meets relational expression (4), (4') really;
ALT/BFL=1.338, meets relational expression (5), (5') really;
CT
4/ AGL
23=1.351, really meet relational expression (6);
Be 4.854 (mm) from the thickness of the first lens thing side convex surface 411 to imaging surface 470, really shorten the lens length of optical imaging lens 4.
On the other hand, in the middle of the 15th figure, the optical imaging lens 4 of the present embodiment is all very good in the performance of longitudinal spherical aberration (a), the astigmatic image error (b) in sagitta of arc direction, the astigmatic image error (c) of meridian direction or the aberration (d) that distorts.Therefore, can learn in above-mentioned, the optical imaging lens 4 of the present embodiment can maintain favorable optical performance really, and effectively shortens lens length.
Another please also refer to Figure 18 to Figure 21, wherein Figure 18 represents the cross-sectional view of five chip lens of the optical imaging lens according to the fifth embodiment of the present invention; Figure 19 represents the longitudinal spherical aberration of foundation fifth embodiment of the present invention optical imaging lens and every aberration diagram schematic diagram; Figure 20 represents the detailed optical data of each eyeglass of the optical imaging lens according to the fifth embodiment of the present invention; Figure 21 represents the aspherical surface data of the optical imaging lens according to the fifth embodiment of the present invention.Use the label similar to the first embodiment to indicate similar assembly in the present embodiment, label beginning changes 5 into only as used herein, and such as the first lens thing side is the 511, first face, lens image side is 512, and other reference numerals does not repeat them here.As shown in Figure 18, the optical imaging lens 5 of the present embodiment sequentially comprises aperture 500,1 first lens 510,1 second lens 520, the 3rd lens 530, the 4th lens 540 and one the 5th lens 550 be placed between object side and one first lens 510 from thing side A1 to image side A2.
The refractive index of the 5th embodiment and concave-convex surface configure all identical with the 3rd embodiment, and only radius-of-curvature, lens thickness and each air gap width are different.About each optical characteristics of each lens of the optical imaging lens 5 of the present embodiment and the thickness of each airspace, please refer to the 20th figure, wherein AAG/CT
5, AGL
23-AGL
45, EFL/ALT, CT
4/ BFL, ALT/BFL and CT
4/ AGL
23value be respectively:
AAG/CT
5=4.084, really meet relational expression (1);
AGL
23-AGL
45=0.182 (mm), meets relational expression (2) really;
EFL/ALT=2.053, meets relational expression (3), (3') really;
CT
4/ BFL=0.423, meets relational expression (4), (4') really;
ALT/BFL=1.339, meets relational expression (5), (5') really;
CT
4/ AGL
23=1.352, really meet relational expression (6);
Be 4.853 (mm) from the thickness of the first lens thing side convex surface 511 to imaging surface 570, really shorten the lens length of optical imaging lens 5.
On the other hand, in the middle of Figure 19, the optical imaging lens 5 of the present embodiment is all very good in the performance of longitudinal spherical aberration (a), the astigmatic image error (b) in sagitta of arc direction, the astigmatic image error (c) of meridian direction or the aberration (d) that distorts.Therefore, can learn in above-mentioned, the optical imaging lens 5 of the present embodiment can maintain favorable optical performance really, and effectively shortens lens length.
Another please also refer to Figure 22 to Figure 25, wherein Figure 22 represents the cross-sectional view of five chip lens of the optical imaging lens according to the sixth embodiment of the present invention; Figure 23 represents the longitudinal spherical aberration of foundation sixth embodiment of the present invention optical imaging lens and every aberration diagram schematic diagram; Figure 24 represents the detailed optical data of each eyeglass of the optical imaging lens according to the sixth embodiment of the present invention; Figure 25 represents the aspherical surface data of the optical imaging lens according to the sixth embodiment of the present invention.Use the label similar to the first embodiment to indicate similar assembly in the present embodiment, label beginning changes 6 into only as used herein, and such as the first lens thing side is the 611, first lens image planes is 612, and other reference numerals does not repeat them here.As shown in Figure 22, the optical imaging lens 6 of the present embodiment sequentially comprises aperture 600,1 first lens 610,1 second lens 620, the 3rd lens 630, the 4th lens 640 and one the 5th lens 650 be placed between object side and one first lens 610 from thing side A1 to image side A2.
The refractive index of the 6th embodiment and concave-convex surface configure all identical with the 3rd embodiment, and only radius-of-curvature, lens thickness and each air gap width are different.About each optical characteristics of each lens of the optical imaging lens 6 of the present embodiment and the thickness of each airspace, please refer to Figure 24, wherein AAG/CT
5, AGL
23-AGL
45, EFL/ALT, CT
4/ BFL, ALT/BFL and CT
4/ AGL
23value be respectively:
AAG/CT
5=3.415, really meet relational expression (1);
AGL
23-AGL
45=0.201 (mm), meets relational expression (2) really;
EFL/ALT=2.050, meets relational expression (3), (3') really;
CT
4/ BFL=0.397, meets relational expression (4), (4') really;
ALT/BFL=1.297, meets relational expression (5), (5') really;
CT
4/ AGL
23=1.374, really meet relational expression (6);
Be 4.926 (mm) from the thickness of the first lens thing side convex surface 611 to imaging surface 670, really shorten the lens length of optical imaging lens 6.
On the other hand, in the middle of Figure 23, the optical imaging lens 6 of the present embodiment is all very good in the performance of longitudinal spherical aberration (a), the astigmatic image error (b) in sagitta of arc direction, the astigmatic image error (c) of meridian direction or the aberration (d) that distorts.Therefore, can learn in above-mentioned, the optical imaging lens 6 of the present embodiment can maintain favorable optical performance really, and effectively shortens lens length.
Separately please refer to the AAG/CT of above six embodiments represented by Figure 26
5, AGL
23-AGL
45, EFL/ALT, CT
4/ BFL, ALT/BFL and CT
4/ AGL
23value, can find out that optical imaging lens of the present invention can meet foregoing relationships (1), (2), (3)/(3'), (4)/(4'), (5)/(5'), (6) really.
Referring to Figure 27, is one first preferred embodiment of the portable electronic devices 20 of application of aforementioned optical imaging lens, and portable electronic devices 20 comprises a casing 21 and and is arranged on image module 22 in casing 21.Be only, for mobile phone, portable electronic devices 20 is described at this, but the pattern of portable electronic devices 20 is not as limit.
As shown in FIG., image module 22 comprises foregoing five chip optical imaging lens, as the image sensor 171 exemplarily selecting five chip optical imaging lens 1, of aforementioned first embodiment to be arranged at five chip optical imaging lens 1 image sides for the substrate 172 and that this module rear seat unit is arranged for the module rear seat unit (module housing unit) 24, that arranges for lens barrel 23 for the lens barrel 23, that arranges for five chip optical imaging lens 1 at this.Imaging surface 170 is formed at image sensor 171.
It is noted that, though the present embodiment display optical filtering part 160, but also can omit the structure of optical filtering part 160 in other embodiments, be not limited with the necessity of optical filtering part 160, and casing 21, lens barrel 23 and/or module rear seat unit 24 can be single component or multiple assembling components forms, this need not be defined in; Secondly; the image sensor 171 that the present embodiment uses adopts interconnection system chip package (Chip on Board on plate; COB) packaged type is connected directly between on substrate 172; with traditional die sized package (Chip Scale Package; the difference of packaged type CSP) is that on plate, interconnection system chip package does not need to use cover glass (cover glass); therefore do not need to arrange cover glass in optical imaging lens 1 before image sensor 171, right the present invention is not as limit.
The five chip lens 110,120,130,140,150 that entirety has refractive index are exemplarily be arranged in lens barrel 23 in the mode that there is an airspace between relative two lens respectively.
Module rear seat unit 24 comprises one with the pedestal 2401 arranged for lens barrel 23.Lens barrel 23 coaxially arranges along an axis II' with pedestal 2401, and lens barrel 23 is arranged at inside pedestal 2401.
Due to length only 4.876 (mm) of optical imaging lens 1, therefore by more compact for the size design of portable electronic devices 20 ground, and still good optical property and image quality can be provided.Therefore, the present embodiment, except having the economic benefit of reduce engine husk as raw material consumption, can also meet compact product design trend and consumption demand.
Separately refer to Figure 28, for one second preferred embodiment of the portable electronic devices 20' of application of aforementioned optical imaging lens 1, the essential difference of the portable electronic devices 20' of the second preferred embodiment and the portable electronic devices 20 of the first preferred embodiment is: pedestal 2401 has First body unit 2402,1 second pedestal unit 2403, coil 2404 and a magnet assembly 2405.This pedestal 2401 is except can for arranging except 23 lens barrels, also can move along the optical axis direction of optical imaging lens 1, thin portion is described as follows: fit outside First body unit 2402 and lens barrel 23 and arrange along an axis II', the second pedestal unit 2403 is along axis II' and around First body unit 2402 arranged outside.Coil 2404 to be arranged on outside First body unit 2402 and inside the second pedestal unit 2403 between.Magnet assembly 2405 to be arranged on outside coil 2404 and inside the second pedestal unit 2403 between.
First body unit 2402 can move along axis II' with lens barrel 23 and the optical imaging lens 1 be arranged in lens barrel 23.Other modular construction of second embodiment of portable electronic devices 20' is then similar with the portable electronic devices 20 of the first embodiment, does not repeat them here.
Similarly, due to length only 4.876 (mm) of optical imaging lens 1, therefore by more compact for the size design of portable electronic devices 20' ground, and still good optical property and image quality can be provided.Therefore, the present embodiment, except having the economic benefit of reduce engine husk as raw material consumption, can also meet compact product design trend and consumption demand.
Can learn in above-mentioned, portable electronic devices of the present invention and its optical imaging lens, by controlling the ratio of at least one lens center thickness to all summations along the airspace on optical axis between five lens in a preset range, and merge the thin portion structure of each lens and/or the design of optical activity in the wrong, to maintain favorable optical performance, and effectively shorten lens length.
Although specifically show in conjunction with preferred embodiment and describe the present invention; 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, sequentially comprises from thing side to image side:
One aperture;
One first lens with positive refractive index, comprise one towards the thing side of thing side, this thing side is a convex surface;
One second lens with negative refractive index;
One the 3rd lens with negative refractive index;
One the 4th lens; And
One the 5th lens, comprise one towards the thing side and of thing side towards the face, image side of image side, this thing side comprises the concave part that is positioned at optical axis near zone, and this face, image side comprises the convex surface part that is positioned at circumference near zone;
Wherein, the eyeglass that entirety has a refractive index only only has five lens;
The center thickness of 4th lens on optical axis is CT
4, the back focal length (Back focal length) of this optical imaging lens is BFL, this CT
4following relational expression is met with BFL:
CT
4/ BFL ≤ 0.5。
2. optical imaging lens as claimed in claim 1, is characterized in that: four clearances between these first lens and the 5th lens on optical axis are summed up as AAG, and the center thickness of the 5th lens on optical axis is CT
5, meet following relational expression:
AAG/CT
5≥ 3.0。
3. optical imaging lens according to claim 2, is characterized in that: the clearance between these second lens and the 3rd lens on optical axis is AGL
23, the clearance between the 4th lens and the 5th lens on optical axis is AGL
45, meet following relational expression:
0 ≤ AGL
23 - AGL
45≤ 0.4 mm。
4. optical imaging lens according to claim 2, is characterized in that: the 4th lens comprise one towards the thing side of thing side, and this thing side comprises the concave part that is positioned at circumference near zone.
5. optical imaging lens according to claim 4, is characterized in that: the clearance between these second lens and the 3rd lens on optical axis is AGL
23, this CT
4with AGL
23meet following relational expression:
CT
4 / AGL
23≤ 3.0。
6. optical imaging lens according to claim 2, is characterized in that: the effective focal length (Effective focal length) of this optical imaging lens is EFL, and the thickness summation of these five lens on optical axis is that ALT, this EFL and ALT meet following relational expression:
EFL / ALT ≥ 1.8。
7. optical imaging lens according to claim 6, is characterized in that: the clearance between these second lens and the 3rd lens on optical axis is AGL
23, this CT
4with AGL
23meet following relational expression:
CT
4/ AGL
23 ≤ 3.0。
8. optical imaging lens according to claim 2, is characterized in that: the thickness summation of these five lens on optical axis is that ALT, this ALT and BFL meet following relational expression:
ALT / BFL ≤ 2.0。
9. optical imaging lens according to claim 8, is characterized in that: this ALT and BFL more meets following relational expression:
ALT / BFL ≤ 1.5。
10. optical imaging lens according to claim 1, is characterized in that: the clearance between these second lens and the 3rd lens on optical axis is AGL
23, the clearance between the 4th lens and the 5th lens on optical axis is AGL
45, meet following relational expression:
0 ≤ AGL
23- AGL
45≤ 0.4 mm。
11. optical imaging lens according to claim 10, it is characterized in that: these second lens comprise one towards the thing side of thing side, this thing side comprises the convex surface part that is positioned at circumference near zone, and the effective focal length of this optical imaging lens is EFL, the thickness summation of these five lens on optical axis is that ALT, this EFL and ALT meet following relational expression:
EFL / ALT ≥ 1.9。
12. optical imaging lens according to claim 1, is characterized in that: the 4th lens comprise one towards the thing side of thing side, and this thing side comprises the concave part that is positioned at circumference near zone.
13. optical imaging lens according to claim 12, is characterized in that: these second lens comprise one towards the thing side of thing side, and this thing side comprises the convex surface part that is positioned at circumference near zone.
14. optical imaging lens according to claim 13, is characterized in that: the clearance between these second lens and the 3rd lens on optical axis is AGL
23, this CT
4with AGL
23meet following relational expression:
CT
4/ AGL
23 ≤ 3.0。
15. optical imaging lens according to claim 1, is characterized in that: these second lens comprise one towards the thing side of thing side, and this thing side comprises the convex surface part that is positioned at circumference near zone.
16. optical imaging lens according to claim 15, is characterized in that: the effective focal length of this optical imaging lens is EFL, and the thickness summation of these five lens on optical axis is that ALT, this EFL and ALT meet following relational expression:
EFL/ALT >=1.8; And
Clearance between these second lens and the 3rd lens on optical axis is AGL
23, this CT
4with AGL
23meet following relational expression:
CT
4/ AGL
23≤ 3.0。
17. 1 kinds of electronic installations, comprising:
One casing; And
One image module, is installed in this casing, comprises:
Just like the optical imaging lens according to any one of the claims 1 to 16;
One lens barrel, arranges this optical imaging lens to supply;
One module rear seat unit, arranges this lens barrel to supply;
One substrate, arranges this module rear seat unit to supply; And
One image sensor, is arranged at this substrate and is positioned at the image side of this optical imaging lens.
18. electronic installations as claimed in claim 17, is characterized in that: this module rear seat unit comprises a pedestal, arrange this lens barrel to supply and can move along the optical axis direction of this optical imaging lens.
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| CN201210432355.9A CN103135205B (en) | 2012-11-02 | 2012-11-02 | Portable electronic device and optical imaging lens thereof |
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| CN103543512B (en) * | 2013-06-03 | 2016-05-11 | 玉晶光电(厦门)有限公司 | Portable electronic devices and its optical imaging lens |
| JP6226369B2 (en) | 2013-10-04 | 2017-11-08 | カンタツ株式会社 | Wide-angle imaging lens |
| TWI589916B (en) * | 2015-01-06 | 2017-07-01 | 先進光電科技股份有限公司 | Optical image capturing system |
| US11493734B2 (en) | 2017-06-13 | 2022-11-08 | Zhejiang Sunny Optical Co., Ltd | Camera lens assembly including five lenses of +−++− or +−−+− refractive powers |
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| JP2008287034A (en) * | 2007-05-17 | 2008-11-27 | Sharp Corp | Actuator, its manufacture method, imaging equipment and portable electronic equipment |
| CN103064173B (en) * | 2008-08-25 | 2015-05-20 | 柯尼卡美能达株式会社 | Imaging lens, imaging device and portable terminal |
| CN101819315B (en) * | 2009-02-27 | 2014-05-07 | 柯尼卡美能达精密光学株式会社 | Image pickup lens, image pickup apparatus, and mobile terminal |
| JP5371148B2 (en) * | 2009-06-04 | 2013-12-18 | 株式会社オプトロジック | Imaging lens |
| KR20120039075A (en) * | 2009-07-08 | 2012-04-25 | 코니카 미놀타 옵토 인코포레이티드 | Image pickup lens, image pickup apparatus and portable terminal |
| JP2011209352A (en) * | 2010-03-29 | 2011-10-20 | Konica Minolta Opto Inc | Optical system and lens positioning method |
| TWI406027B (en) * | 2010-04-08 | 2013-08-21 | Largan Precision Co Ltd | Imaging lens assembly |
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