CN103698874A - Optical imaging lens and electronic device employing same - Google Patents
Optical imaging lens and electronic device employing same Download PDFInfo
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- CN103698874A CN103698874A CN201310334976.8A CN201310334976A CN103698874A CN 103698874 A CN103698874 A CN 103698874A CN 201310334976 A CN201310334976 A CN 201310334976A CN 103698874 A CN103698874 A CN 103698874A
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Abstract
The invention provides an optical imaging lens and an electronic device employing the same. The optical imaging lens comprises a first lens, an aperture, a second lens, a third lens, a fourth lens and a fifth lens, wherein the first lens has a refractive index, the object side plane of the first lens is a convex surface, and the image side plane of the first lens has a concave surface part in an area close to the circumference; the second lens has a refractive index, and the object side plane of the second lens has a convex surface part in an area close to the circumference; the third lens has a refractive index, and the object side plane of the third lens has a concave surface part in an area close to the circumference; the fourth lens has a refractive index; the image side plane of the fifth lens has a concave surface part in an area close to an optical axis. The electronic device comprises a housing and an image module mounted in the housing, wherein the image module comprises the optical imaging lens, a lens barrel, a module backseat unit, a substrate and an image sensor. According to the optical imaging lens and the electronic device employing the same, the total length of the lens can be effectively decreased, the shooting angle can be enlarged, and good optical performance is achieved.
Description
Technical field
The present invention is haply about a kind of optical imaging lens, with the electronic installation that comprises this optical imaging lens.Particularly, the present invention refers to a kind of optical imaging lens that expands half angle of view especially, and applies the electronic installation of this optical imaging lens.
Background technology
In recent years, miniaturization, the slimming of mobile phone (mobile phone) have become designer trends, and the related development that affects related optical imaging lens of this trend; The system length how can effectively reduce optical lens, still can maintain enough optical properties simultaneously, is the R&D direction that industry is made great efforts always.
US Patent No. 7502181, US7826151 and US8422145 have disclosed a kind of optical lens being comprised of five lens, yet, the aperture of these patents be located at first lens before, the half angle of view (HFOV of this kind of optical design; Half of field of view) approximately 32～33 degree only, cannot meet day by day harsh user's demand, and the system length of these optical designs are respectively 6.5～8.0mm, also cannot meet the design requirement of mobile phone slimming.
Therefore, how can effectively expand the system length of field angle, reduction optical lens, still can maintain enough optical properties, be industry problem urgently to be resolved hurrily simultaneously always.
Summary of the invention
So the present invention can provide a kind of lightweight, low manufacturing cost, contraction in length, large half angle of view and the optical imaging lens of high resolving power and high imaging quality can be provided.The present invention's five chip imaging lens, from thing side to picture side, sequentially arrange to have first lens, aperture, the second lens, the 3rd lens, the 4th lens and the 5th lens on optical axis.
The invention provides a kind of optical imaging lens, by a thing side to, as side, on an optical axis, sequentially comprised: one has the first lens of refractive index, it has towards one first thing side of this thing side and one first picture side as side towards this, this the first thing side is a convex surface, this first has a concave surface portion that is positioned at circumference near zone as side, one aperture, one has the second lens of refractive index, it has the one second thing side towards this thing side, this the second thing side has a convex surface part that is positioned at circumference near zone, one has the 3rd lens of refractive index, it has one the 3rd thing side towards this thing side, the 3rd thing side has a concave surface portion that is positioned at circumference near zone, one has the 4th lens of refractive index, and the 5th lens with refractive index, it has one the 5th picture side as side towards this, the 5th has a concave surface portion that is positioned at optical axis near zone as side, wherein, the 5th lens are a glass lens, and this optical imaging lens only possesses five eyeglasses with refractive index.
In optical imaging lens of the present invention, thus between first lens and the second lens on optical axis the width of clearance be between AG12, the second lens and the 3rd lens on optical axis the width of clearance be between AG23, the 3rd lens and the 4th lens on optical axis the width of clearance be between AG34, the 4th lens and the 5th lens on optical axis the width of clearance be that the sum total of four clearances on optical axis between AG45 first lens to the five lens is AAG.
In optical imaging lens of the present invention, the center thickness of first lens on optical axis is that T1, the center thickness of the second lens on optical axis are that T2, the center thickness of the 3rd lens on optical axis are that T3, the center thickness of the 4th lens on optical axis are that T4, the center thickness of the 5th lens on optical axis are T5, so first lens, the second lens, the 3rd lens, the 4th lens and the 5th lens center thickness sum total on optical axis is ALT.
In optical imaging lens of the present invention, meet the relation of 2.2≤T4/ (AG12+AG34).
In optical imaging lens of the present invention, meet the relation of 1.7≤AG23/ (AG12+AG45).
In optical imaging lens of the present invention, meet the relation of 2.3≤AAG/T1.
In optical imaging lens of the present invention, meet the relation of ALT/T4≤2.8.
In optical imaging lens of the present invention, meet the relation of 1≤T2/T1.
In optical imaging lens of the present invention, meet the relation of 1.5≤AG23/T3.
In optical imaging lens of the present invention, meet the relation of ALT/AG23≤5.5.
In optical imaging lens of the present invention, meet the wherein relation of 3.3≤T4/T3.
In optical imaging lens of the present invention, meet the wherein relation of 1.3≤T2/T3.
In optical imaging lens of the present invention, meet the wherein relation of 1.6≤T2/ (AG12+AG34)≤2.5.
In optical imaging lens of the present invention, meet the relation of 1.6≤AG23/ (AG12+AG34).
In optical imaging lens of the present invention, meet the relation of 1.9≤T2/ (AG12+AG45)≤3.3.
Further, the present invention provides again a kind of electronic installation of optical imaging lens of application of aforementioned.Electronic installation of the present invention, comprises casing and is arranged on the image module in casing.Image module comprises: meet the optical imaging lens, the lens barrel for arranging for optical imaging lens, the module back seat unit for arranging for lens barrel, the substrate for arranging for this module back seat unit of aforementioned techniques feature, and be arranged at this substrate and be positioned at an image sensor of a picture side of this optical imaging lens.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the first embodiment of the present invention's five chip optical imaging lens.
In Fig. 2, (A) part is the longitudinal spherical aberration figure of the first embodiment on imaging surface.
In Fig. 2, (B) part is that the first embodiment is at the astigmatic image error figure of sagitta of arc direction.
In Fig. 2, (C) part is that the first embodiment is at the astigmatic image error figure of meridian direction.
In Fig. 2, (D) part is the distortion aberration diagram of the first embodiment.
Fig. 3 is the schematic diagram of the second embodiment of the present invention's five chip optical imaging lens.
In Fig. 4, (A) part is the longitudinal spherical aberration figure of the second embodiment on imaging surface.
In Fig. 4, (B) part is that the second embodiment is at the astigmatic image error figure of sagitta of arc direction.
In Fig. 4, (C) part is that the second embodiment is at the astigmatic image error figure of meridian direction.
In Fig. 4, (D) part is the distortion aberration diagram of the second embodiment.
Fig. 5 is the schematic diagram of the 3rd embodiment of the present invention's five chip optical imaging lens.
In Fig. 6, (A) part is the 3rd longitudinal spherical aberration figure of embodiment on imaging surface.
In Fig. 6, (B) part is that the 3rd embodiment is at the astigmatic image error figure of sagitta of arc direction.
In Fig. 6, (C) part is that the 3rd embodiment is at the astigmatic image error figure of meridian direction.
In Fig. 6, (D) part is the distortion aberration diagram of the 3rd embodiment.
Fig. 7 is the schematic diagram of the 4th embodiment of the present invention's five chip optical imaging lens.
In Fig. 8, (A) part is the 4th longitudinal spherical aberration figure of embodiment on imaging surface.
In Fig. 8, (B) part is that the 4th embodiment is at the astigmatic image error figure of sagitta of arc direction.
In Fig. 8, (C) part is that the 4th embodiment is at the astigmatic image error figure of meridian direction.
In Fig. 8, (D) part is the distortion aberration diagram of the 4th embodiment.
Fig. 9 is the schematic diagram of the 5th embodiment of the present invention's five chip optical imaging lens.
In Figure 10, (A) part is the 5th longitudinal spherical aberration figure of embodiment on imaging surface.
In Figure 10, (B) part is that the 5th embodiment is at the astigmatic image error figure of sagitta of arc direction.
In Figure 10, (C) part is that the 5th embodiment is at the astigmatic image error figure of meridian direction.
In Figure 10, (D) part is the distortion aberration diagram of the 5th embodiment.
Figure 11 is the schematic diagram of the 6th embodiment of the present invention's five chip optical imaging lens.
In Figure 12, (A) part is the 6th longitudinal spherical aberration figure of embodiment on imaging surface.
In Figure 12, (B) part is that the 6th embodiment is at the astigmatic image error figure of sagitta of arc direction.
In Figure 12, (C) part is that the 6th embodiment is at the astigmatic image error figure of meridian direction.
In Figure 12, (D) part is the distortion aberration diagram of the 6th embodiment.
Figure 13 is the schematic diagram of the 7th embodiment of the present invention's five chip optical imaging lens.
In Figure 14, (A) part is the 7th longitudinal spherical aberration figure of embodiment on imaging surface.
In Figure 14, (B) part is that the 7th embodiment is at the astigmatic image error figure of sagitta of arc direction.
In Figure 14, (C) part is that the 7th embodiment is at the astigmatic image error figure of meridian direction.
In Figure 14, (D) part is the distortion aberration diagram of the 7th embodiment.
Figure 15 is the schematic diagram of the 8th embodiment of the present invention's five chip optical imaging lens.
In Figure 16, (A) part is the 8th longitudinal spherical aberration figure of embodiment on imaging surface.
In Figure 16, (B) part is that the 8th embodiment is at the astigmatic image error figure of sagitta of arc direction.
In Figure 16, (C) part is that the 8th embodiment is at the astigmatic image error figure of meridian direction.
In Figure 16, (D) part is the distortion aberration diagram of the 8th embodiment.
Figure 17 is the schematic diagram of the 9th embodiment of the present invention's five chip optical imaging lens.
In Figure 18, (A) part is the 9th longitudinal spherical aberration figure of embodiment on imaging surface.
In Figure 18, (B) part is that the 9th embodiment is at the astigmatic image error figure of sagitta of arc direction.
In Figure 18, (C) part is that the 9th embodiment is at the astigmatic image error figure of meridian direction.
In Figure 18, (D) part is the distortion aberration diagram of the 9th embodiment.
Figure 19 is the schematic diagram figure of optical imaging lens curvature shapes of the present invention.
Figure 20 is the schematic diagram of the first preferred embodiment of the portable electronic devices of application the present invention five chip optical imaging lens.
Figure 21 is the schematic diagram of the second preferred embodiment of the portable electronic devices of application the present invention five chip optical imaging lens.
Figure 22 is the optical data tabular drawing that the first embodiment is detailed.
Figure 23 is the aspherical surface data tabular drawing that the first embodiment is detailed.
Figure 24 is the optical data tabular drawing that the second embodiment is detailed.
Figure 25 is the aspherical surface data tabular drawing that the second embodiment is detailed.
Figure 26 is the optical data tabular drawing that the 3rd embodiment is detailed.
Figure 27 is the aspherical surface data tabular drawing that the 3rd embodiment is detailed.
Figure 28 is the optical data tabular drawing that the 4th embodiment is detailed.
Figure 29 is the aspherical surface data tabular drawing that the 4th embodiment is detailed.
Figure 30 is the optical data tabular drawing that the 5th embodiment is detailed.
Figure 31 is the aspherical surface data tabular drawing that the 5th embodiment is detailed.
Figure 32 is the optical data tabular drawing that the 6th embodiment is detailed.
Figure 33 is the aspherical surface data tabular drawing that the 6th embodiment is detailed.
Figure 34 is the optical data tabular drawing that the 7th embodiment is detailed.
Figure 35 is the aspherical surface data tabular drawing that the 7th embodiment is detailed.
Figure 36 is the optical data tabular drawing that the 8th embodiment is detailed.
Figure 37 is the aspherical surface data tabular drawing that the 8th embodiment is detailed.
Figure 38 is the optical data tabular drawing that the 9th embodiment is detailed.
Figure 39 is the aspherical surface data tabular drawing that the 9th embodiment is detailed.
Figure 40 is the important parameter tabular drawing of each embodiment.
[symbol description]
1 optical imaging lens
2 thing sides
3 picture sides
4 optical axises
10 first lens
11 first thing sides
12 first picture sides
E extension
16 concave surface portions
17 concave surface portions
20 second lens
21 second thing sides
22 second picture sides
24 convex surface part
30 the 3rd lens
31 the 3rd thing sides
32 the 3rd picture sides
33 concave surface portions
34 concave surface portions
36 concave surface portions
37 convex surface part
40 the 4th lens
41 the 4th thing sides
42 the 4th picture sides
50 the 5th lens
51 the 5th thing sides
52 the 5th picture sides
53 convex surface part
54A, 55 concave surface portions
54B, 54C, 54F, 54G, 54I convex surface part
56 concave surface portions
57 convex surface part
60 optical filters
70 image sensors
71 imaging surfaces
80 apertures
100 portable electronic devices
110 casings
120 image modules
130 lens barrels
140 module back seat unit
141 camera lens back seats
142 first pedestals
143 second pedestals
144 coils
145 magnet assemblies
146 image sensor back seats
172 substrates
200 portable electronic devices
I-I ' axis
A～D region
Lc chief ray
Lm marginal ray
T1～T5 lens center thickness
Embodiment
Before starting to describe the present invention in detail, be first noted that in accompanying drawing of the present invention, similarly assembly is to represent with identical numbering.Wherein, this piece of " lens have positive refractive index (or negative refractive index) " that instructions is sayed, refers to that described lens have positive refractive index (or negative refractive index) at optical axis near zone." the thing side of lens (or picture side) has the convex surface part (or concave surface portion) that is positioned at certain region ", refer to that this region is compared to the exterior lateral area in this region of radially upper next-door neighbour, towards the direction that is parallel to optical axis " outwardly convex " (or " caving inward ") more.Take Figure 19 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 that a-quadrant is compared to the exterior lateral area (being B region) in this region of radially upper next-door neighbour, towards the direction that is parallel to optical axis outwardly convex more, B region more caves inward compared to C region, and C region compared to E region also outwardly convex more in like manner." circumference near zone ", refers to the circumference near zone that is positioned at the curved surface only passing through for imaging light on lens, that is the C region in figure, and wherein, imaging light has comprised chief ray Lc(chief ray) and marginal ray Lm(marginal ray)." optical axis near zone " refers to the optical axis near zone of the curved surface that this only passes through for imaging light, that is the a-quadrant in Figure 19.In addition, each lens also comprise an extension E, use for this entirety of lens package in optical imaging lens, and desirable imaging light can't pass through this extension E, but structure and the shape of this extension E are not limited to this, following embodiment is for asking accompanying drawing succinctly all to omit extension.
As shown in Figure 1, optical imaging lens 1 of the present invention, from placing the thing side 2 of object (not shown) to the picture side 3 of imaging, along optical axis 4(optical axis), sequentially include first lens 10, the second lens 20, the 3rd lens 30, the 4th lens 40, the 5th lens 50, optical filter 60 and imaging surface 71(image plane).In general, first lens 10, the second lens 20, the 3rd lens 30, the 4th lens 40 and the 5th lens 50 can be made by transparent plastic material, but the present invention is not as limit.In optical imaging lens 1 of the present invention, the eyeglass with refractive index only has five altogether.Optical axis 4 is the optical axis of whole optical imaging lens 1, so the optical axis of the optical axis of each lens and optical imaging lens 1 is identical.
In addition, optical imaging lens 1 also comprises aperture 80(aperture stop), and be arranged at suitable position.In Fig. 1, aperture 80 is arranged between first lens 10 and the second lens 20.When by be positioned at thing side 2 when taking light that thing (not shown) sends and enter optical imaging lens 1 of the present invention, can be via after first lens 10, aperture 80, the second lens 20, the 3rd lens 30, the 4th lens 40, the 5th lens 50 and optical filter 60, can on the imaging surface 71 as side 3, focus on and form image clearly.
In various embodiments of the present invention, the optical filter 60 of selectivity setting can also be the filter of the various proper function of tool, and for example optical filter 60 can be infrared ray filtering optical filter (IR cut filter), is placed between the 5th lens 50 and imaging surface 71.The material of optical filter 60 is glass.
Each lens in optical imaging lens 1 of the present invention, all have respectively towards the thing side of thing side 2, with the picture side towards picture side 3.In addition, each lens in optical imaging lens 1 of the present invention, also all have approach optical axis 4 optical axis near zone, with away from the circumference near zone of optical axis 4.For example, first lens 10 has the first thing side 11 and the first picture side 12; The second lens 20 have the second thing side 21 and the second picture side 22; The 3rd lens 30 have the 3rd thing side 31 and the 3rd picture side 32; The 4th lens 40 have the 4th thing side 41 and the 4th picture side 42; The 5th lens 50 have the 5th thing side 51 and the 5th picture side 52.
Each lens in optical imaging lens 1 of the present invention, also all have respectively the center thickness T of position on optical axis 4.For example, first lens 10 has first lens thickness T 1, the second lens 20 and has the second lens thickness T2, the 3rd lens 30 and have the 3rd lens thickness T3, the 4th lens 40 have the 4th lens thickness T4, and the 5th lens 50 have the 5th lens thickness T5.So in optical imaging lens 1, the center thickness of lens is always collectively referred to as ALT on optical axis 4.That is, ALT=T1+T2+T3+T4+T5.
In addition, in optical imaging lens 1 of the present invention, between each lens, there is again clearance (air gap) G of position on optical axis 4.For example, between first lens 10 to second lens 20 air gap width AG12, the second lens 20 to air gap width AG23, the 3rd lens 30 between the 3rd lens 30 to air gap width AG34, the 4th lens 40 between the 4th lens 40 to air gap width AG45 between the 5th lens 50.So first lens 10 is called AAG to the sum total that is positioned at four air gap width between each lens on optical axis 4 between the 5th lens 50.That is, AAG=AG12+AG23+AG34+AG45.
The first embodiment
Refer to Fig. 1, the first embodiment of illustration optical imaging lens 1 of the present invention.The longitudinal spherical aberration (longitudinal spherical aberration) of the first embodiment on imaging surface 71 please refer to (A) in Fig. 2 partly, the astigmatic image error (astigmatic field aberration) of the sagitta of arc (sagittal) direction please refer to (B) in Fig. 2 partly, the astigmatic image error of meridian (tangential) direction please refer in Fig. 2 (C) partly and distortion aberration (distortion aberration) please refer to (D) part in Fig. 2.In all embodiment, the Y-axis of each spherical aberration figure represents visual field, and its peak is 1.0, and in this embodiment, the Y-axis of each astigmatism figure and distortion figure represents image height, and system image height is 2.950 millimeters.
The optical imaging lens 1 of the first embodiment mainly by five pieces, with plastic material, make and have refractive index lens 10～50, optical filter 60, aperture 80, formed with imaging surface 71.Aperture 80 is arranged between first lens 10 and the second lens 20.Optical filter 60 can be infrared filter, is used for preventing that the infrared ray in light is projected to imaging surface and affects image quality.
The second lens 20 have positive refractive index.The second thing side 21 towards thing side 2 is convex surface, at circumference near zone, has convex surface part 24, and is convex surface towards the second picture side 22 of picture side 3, and in addition, the second thing side 21 and second of the second lens is all aspheric surface as side 22.
The 3rd lens 30 have negative refractive index, with towards the 3rd thing side 31 of thing side 2 and towards the 3rd picture side 32 of picture side 3.The 3rd thing side 31 has concave surface portion 33 at optical axis near zone, at circumference near zone, has concave surface portion 34.The 3rd has near the concave surface portion 36 optical axis as side 32, and near the convex surface part 37 circumference.In addition, the 3rd thing side 31 and the 3rd of the 3rd lens 30 is all aspheric surface as side 32.
The 4th lens 40 have positive refractive index.The 4th thing side 41 towards thing side 2 is concave surface, and is convex surface towards the 4th picture side 42 of picture side 3.In addition, the 4th thing side 41 and the 4th of the 4th lens 40 is all aspheric surface as side 42.
The 5th lens 50 have negative refractive index, towards the 5th thing side 51 of thing side 2 and towards the 5th picture side 52 of picture side 3.The 5th thing side 51 has the 54A of concave surface portion at the convex surface part 53 of optical axis near zone and circumference near zone, and the 5th has in the concave surface portion 56 of optical axis near zone and the convex surface part 57 of circumference near zone as side 52.In addition, the 5th thing side 51 and the 5th of the 5th lens 50 is all aspheric surface as side 52.Optical filter 60 can be infrared filter, and it is between the 5th lens 50 and imaging surface 71.
In optical imaging lens 1 of the present invention, the belongings side 11/21/31/41/51 from first lens 10 to the 5th lens 50 amounts to ten curved surfaces with picture side 12/22/32/42/52, is aspheric surface.These aspheric surface systems define via following formula:
Wherein:
R represents the radius-of-curvature of lens surface;
Z represents the aspheric degree of depth (point that in aspheric surface, distance optical axis is Y, itself and the tangent plane that is tangential on summit on aspheric surface optical axis, vertical range between the two);
Y represents point on non-spherical surface and the vertical range of optical axis;
K is conical surface coefficient (conic constant);
A2i is 2i rank asphericity coefficient.
As shown in figure 22, aspherical surface data as shown in figure 23 for the optical data of the first embodiment imaging lens system.In the optical lens system of following examples, the f-number (f-number) of whole optical lens system is Fno, half angle of view (Half Field of View, be called for short HFOV) be half of maximum visual angle in whole optical lens system (Field of View), the unit of radius-of-curvature, thickness and focal length is millimeter (mm) again.Optical imaging lens length is 4.197 millimeters, and system image height is 2.950 millimeters.Relation in the first embodiment between each important parameter exemplifies as follows:
The second embodiment
Refer to Fig. 3, the second embodiment of illustration optical imaging lens 1 of the present invention.The longitudinal spherical aberration of the second embodiment on imaging surface 71 please refer to (A) in Fig. 4 partly, the astigmatic image error of sagitta of arc direction please refer to (B) in Fig. 4 partly, the astigmatic image error of meridian direction please refer in Fig. 4 (C) partly, distortion aberration please refer to (D) part in Fig. 4.In the second embodiment, the concaveconvex shape of each lens surface is all similar haply with the first embodiment, difference is in the parameter of lens and clearance different, and the 5th thing side 51 of the second embodiment the 5th lens 50 has the convex surface part 54B that a convex surface part 53, that is positioned at optical axis near zone is positioned at circumference near zone, and a concave surface portion 55 between optical axis near zone and circumference near zone.As shown in figure 24, aspherical surface data as shown in figure 25 for the detailed optical data of the second embodiment.4.347 millimeters of optical imaging lens length, and system image height is 2.950 millimeters.Pass between its each important parameter is:
The 3rd embodiment
Refer to Fig. 5, the 3rd embodiment of illustration optical imaging lens 1 of the present invention.The longitudinal spherical aberration of the 3rd embodiment on imaging surface 71 please refer to (A) in Fig. 6 partly, the astigmatic image error of sagitta of arc direction please refer to (B) in Fig. 6 partly, the astigmatic image error of meridian direction please refer in Fig. 6 (C) partly, distortion aberration please refer to (D) part in Fig. 6.In the 3rd embodiment, the concaveconvex shape of each lens surface is all similar haply with the first embodiment, difference is in the parameter of lens and clearance different, and the 5th thing side 51 of the 3rd embodiment the 5th lens 50 has the convex surface part 54C that a convex surface part 53, that is positioned at optical axis near zone is positioned at circumference near zone, and a concave surface portion 55 between optical axis near zone and circumference near zone.The detailed optical data of the 3rd embodiment as shown in figure 26, aspherical surface data as shown in figure 27,4.263 millimeters of optical imaging lens length, and system image height is 2.950 millimeters.Pass between its each important parameter is:
The 4th embodiment
Refer to Fig. 7, the 4th embodiment of illustration optical imaging lens 1 of the present invention.The longitudinal spherical aberration of the 4th embodiment on imaging surface 71 please refer to (A) in Fig. 8 partly, the astigmatic image error of sagitta of arc direction please refer to (B) in Fig. 8 partly, the astigmatic image error of meridian direction please refer in Fig. 8 (C) partly, distortion aberration please refer to (D) part in Fig. 8.The 4th embodiment and the first embodiment are similar, do not exist together and are only parameter and the clearance difference of lens.The detailed optical data of the 4th embodiment as shown in figure 28, aspherical surface data as shown in figure 29,4.321 millimeters of optical imaging lens length, and system image height is 2.950 millimeters.Pass between its each important parameter is:
The 5th embodiment
Refer to Fig. 9, the 5th embodiment of illustration optical imaging lens 1 of the present invention.The longitudinal spherical aberration of the 5th embodiment on imaging surface 71 please refer to (A) in Figure 10 partly, the astigmatic image error of sagitta of arc direction please refer to (B) in Figure 10 partly, the astigmatic image error of meridian direction please refer in Figure 10 (C) partly, distortion aberration please refer to (D) part in Figure 10.The 5th embodiment and the first embodiment are similar, do not exist together and are only parameter and the clearance difference of lens.The detailed optical data of the 5th embodiment as shown in figure 30, aspherical surface data as shown in figure 31,4.344 millimeters of optical imaging lens length, and system image height is 2.950 millimeters.Pass between its each important parameter is:
The 6th embodiment
Refer to Figure 11, the 6th embodiment of illustration optical imaging lens 1 of the present invention.The longitudinal spherical aberration of the 6th embodiment on imaging surface 71 please refer to (A) in Figure 12 partly, the astigmatic image error of sagitta of arc direction please refer to (B) in Figure 12 partly, the astigmatic image error of meridian direction please refer in Figure 12 (C) partly, distortion aberration please refer to (D) part in Figure 12.In the 6th embodiment, the concaveconvex shape of each lens surface is all similar haply with the first embodiment, difference is in the parameter of lens and clearance different, and the 5th thing side 51 of the 6th embodiment the 5th lens 50 has the convex surface part 54F that a convex surface part 53, that is positioned at optical axis near zone is positioned at circumference near zone, and a concave surface portion 55 between optical axis near zone and circumference near zone.。The detailed optical data of the 6th embodiment shown in figure 32, aspherical surface data as shown in figure 33,4.293 millimeters of optical imaging lens length, and system image height is 2.950 millimeters.Pass between its each important parameter is:
The 7th embodiment
Refer to Figure 13, the 7th embodiment of illustration optical imaging lens 1 of the present invention.The longitudinal spherical aberration of the 7th embodiment on imaging surface 71 please refer to (A) in Figure 14 partly, the astigmatic image error of sagitta of arc direction please refer to (B) in Figure 14 partly, the astigmatic image error of meridian direction please refer in Figure 14 (C) partly, distortion aberration please refer to (D) part in Figure 14.In the 7th embodiment, the concaveconvex shape of each lens surface is all similar haply with the first embodiment, difference is in the parameter of lens and clearance different, and the 5th thing side 51 of the 7th embodiment the 5th lens 50 has the convex surface part 54G that a convex surface part 53, that is positioned at optical axis near zone is positioned at circumference near zone, and a concave surface portion 55 between optical axis near zone and circumference near zone.The detailed optical data of the 7th embodiment as shown in figure 34, aspherical surface data as shown in figure 35,4.247 millimeters of optical imaging lens length, and system image height is 2.950 millimeters.Pass between its each important parameter is:
The 8th embodiment
Refer to Figure 15, the 7th embodiment of illustration optical imaging lens 1 of the present invention.The longitudinal spherical aberration of the 7th embodiment on imaging surface 71 please refer to (A) in Figure 16 partly, the astigmatic image error of sagitta of arc direction please refer to (B) in Figure 16 partly, the astigmatic image error of meridian direction please refer in Figure 16 (C) partly, distortion aberration please refer to (D) part in Figure 16.In the 8th embodiment, the concaveconvex shape of each lens surface is all similar haply with the first embodiment, does not exist together and is only parameter and the clearance difference of lens.The detailed optical data of the 8th embodiment as shown in figure 36, aspherical surface data as shown in figure 37,4.307 millimeters of optical imaging lens length, and system image height is 2.950 millimeters.Pass between its each important parameter is:
The 9th embodiment
Refer to Figure 17, the 7th embodiment of illustration optical imaging lens 1 of the present invention.The longitudinal spherical aberration of the 7th embodiment on imaging surface 71 please refer to (A) in Figure 18 partly, the astigmatic image error of sagitta of arc direction please refer to (B) in Figure 18 partly, the astigmatic image error of meridian direction please refer in Figure 18 (C) partly, distortion aberration please refer to (D) part in Figure 18.In the 9th embodiment, the concaveconvex shape of each lens surface is all similar haply with the first embodiment, difference is in the parameter of lens and clearance different, and the 5th thing side 51 of the 9th embodiment the 5th lens 50 has the convex surface part 54I that a convex surface part 53, that is positioned at optical axis near zone is positioned at circumference near zone, and a concave surface portion 55 between optical axis near zone and circumference near zone.The detailed optical data of the 9th embodiment as shown in figure 38, aspherical surface data as shown in figure 39,4.218 millimeters of optical imaging lens length, and system image height is 2.950 millimeters.Pass between its each important parameter is:
In addition, the important parameter of each embodiment arranges in Figure 40.
Sum up each above embodiment, applicant finds that there is following characteristic:
1. first lens thing side is that convex surface can assist to be gathered into picture light, and aperture is placed between first and second lens, can reach the effect that expands field angle and improve aberration; In addition, first lens arranges concave surface portion as side in circumference near zone, the second lens thing side in circumference near zone convex surface part is set, the 3rd lens thing side arranges concave surface portion in circumference near zone, and the 5th lens as side, in optical axis near zone, concave surface portion is set, can reach the effect of improving aberration with arranging in pairs or groups.
2. with the present invention's the first preferred embodiment explanation, in longitudinal spherical aberration Fig. 2 of this first preferred embodiment in (A) part, the curve that each wavelength becomes all very close to, the Off-axis-light that each wavelength differing heights is described all concentrates near imaging point, by the skewness magnitude level of each curve, can be found out that the imaging point deviation control of Off-axis-light of differing heights is at ± 0.07mm, therefore this first preferred embodiment obviously improves the spherical aberration of different wave length really, in addition, three kinds represent that wavelength distance is to each other also quite approaching, the image space that represents different wave length light is quite concentrated, thereby make chromatic aberation obtain obviously improvement.
3. in Fig. 2 in (B) part and Fig. 2 in two astigmatic image errors diagram of (C) part, three kinds represent in drop on ± 0.15mm of the focal length of wavelength in whole field range, the optical imaging lens that the first preferred embodiment is described can effectively be eliminated aberration, in addition, three kinds represent that wavelength distance is to each other quite approaching, represent that the dispersion on axle also improves significantly.In Fig. 2, distortion aberration accompanying drawing of (D) part shows in maintain ± 2% scope of the distortion aberration of the first preferred embodiment, 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, in system length, foreshortened to about 4.2mm, under the condition of half angle of view (HFOV) up to approximately 47 degree, still can effectively overcome chromatic aberation and preferably image quality is provided, therefore this first preferred embodiment can maintain under the condition of favorable optical performance, reach the effect that shortens lens length and expand shooting angle.
In addition,, according to the relation between each important parameter of above each embodiment, by the Numerical Control of following parameter, can assist deviser to design to possess favorable optical performance, entire length effectively shortens and technical feasible optical imaging lens.The ratio of different parameters has preferably scope, for example:
1, T4/ (AG12+AG34) suggestion is more than or equal to 2.2:AG12 for the gap width of first and second lens, AG34 is the 3rd and the gap width of the 4th lens, if effectively dwindle, the slimming of camera lens integral body will be contributed to, and T4/ (AG12+AG34) value is if be more than or equal to 2.2, can make T4, AG12 and AG34 obtain good thickness configuration, this T4/ (AG12+AG34) advises with better between 2.2～8.0.
2, should to be more than or equal to 1.7:AG23 be second and the gap width of the 3rd lens for AG23/ (AG12+AG45) suggestion, because the 3rd thing side of the 3rd lens possesses the concave surface portion of circumference near zone, therefore this value also cannot effectively be dwindled, but AG12 and AG45 are not subject to the above restrictions and can dwindle to shorten entire system length as far as possible, therefore AG23/ (AG12+AG45) should design towards the large mode of convergence, suggestion should be more than or equal to 1.7, but with better between 1.7～5.0.
3, T2/T1 suggestion should be more than or equal to the center thickness value that 1.0:T1, T2 are respectively first and second lens, this T2/T1 is as being more than or equal to 1.0, can make these first, second lens possess good thickness configuration, but this T2/T1 value is with better between 1.0～2.5.
4, AAG/T1 should be more than or equal to the width summation that 2.3:AAG is each clearance between the first to the 5th lens, though this value dwindle the entire length that contributes to shorten camera lens, but this AAG still needs the width value that remains suitable in order to avoid improves the difficulty of entirety of lens package, T1 advises can dwindling to shorten overall length, therefore AAG/T1 suggestion designs towards the large mode of convergence, suggestion is more than or equal to, but with better between 2.3～3.5.
5, ALT/T4 suggestion should be less than or equal to the center width summation that 2.8:ALT is the first to the 5th lens, if this ALT/T4 meets the condition that is less than or equal to 2.8, can make to obtain good thickness between each lens configures, avoid too great disparity and be unfavorable for whole slimming of ratio between lens, but this ALT/T4 is better between 2.0～2.8 to be situated between.
6, AG23/T3 suggestion should be more than or equal to 1.5:AG23 as mentioned above and cannot effectively dwindle, T3 does not more limit, can dwindle to reach the effect of the whole slimming of camera lens, therefore AG23/T3 should design towards the large mode of convergence, AG23/T3 suggestion is more than or equal to 1.5, but with better between 1.5～2.5.
7, ALT/AG23 suggestion should be less than or equal to 5.5:AG23 as mentioned above and cannot effectively dwindle, ALT does not more limit, can dwindle to reach the effect of the whole slimming of camera lens, therefore ALT/AG23 should design towards the mode that becomes little, ALT/AG23 suggestion is less than or equal to 5.5, but with better between 4.0～5.5.
8, T4/T3 suggestion is more than or equal to 3.3, T2/T3 suggestion and should be greater than 1.3, makes to obtain good thickness configuration between second, third and the 4th lens, and T4/T3 suggestion is with between 3.3～4.5 better, and T2/T3 advises with better between 1.3～2.5.
9, AG23/ (AG12+AG34) suggestion should be more than or equal to 1.6:AG23 as mentioned above and cannot effectively dwindle, but AG12 and AG34 are not subject to the above restrictions and can dwindle to shorten entire system length as far as possible, therefore AG23/ (AG12+AG34) should design towards the large mode of convergence, suggestion should be more than or equal to 1.6, but with better between 1.6～4.5.
10, T2/ (AG12+AG34) suggestion is between 1.6～2.5, T2/ (AG12+AG45) suggestion is between 1.9～3.3, make T2, AG12, AG34 and AG45 obtain preferably thickness configuration, avoid these numerical value excessive and cause entire length or length, or too small and impact assembling or be difficult for manufacturing.
As shown in Figure 20, image module 120 comprises foregoing optical imaging lens 1.The optical imaging lens 1 of aforementioned the first embodiment of Figure 20 illustration.In addition, portable electronic devices 100 separately comprises lens barrel 130, the module back seat unit (module housing unit) 140 for arranging for lens barrel 130 for arranging for optical imaging lens 1, for the substrate 172 arranging for module back seat unit 140, and be arranged at substrate 172 and be positioned at the image sensor 70 of the picture side 3 of optical imaging lens 1.Image sensor 70 in optical imaging lens 1 can be sense electronics optical assembly, for example photosensitive coupling component or complementary matal-oxide semiconductor assembly.Imaging surface 71 is to be formed at image sensor 70.
It is noted that, though the present embodiment shows optical filtering part 60, yet also can omit in other embodiments the structure of optical filtering part 60, so optical filtering part 60 inessential.And casing 110, lens barrel 130 and/or module back seat unit 140 can be single component or a plurality of assembly assembles, but this need not be defined in.Secondly, the image sensor 70 that the present embodiment is used is to adopt the packaged type of interconnection system chip package (Chip on Board, COB) on plate and be directly connected on substrate 172, and so the present invention is not as limit.
Five lens 10,20,30,40,50 with refractive index are to be arranged in lens barrel 130 to have respectively the mode of airspace between two lens illustratively.Module back seat unit 140 has camera lens back seat 141, and is arranged at the image sensor back seat 146 between camera lens back seat 141 and image sensor 70, so in other embodiments, not necessarily has image sensor back seat 146.Lens barrel 130 is coaxially to arrange along axis I-I' with camera lens back seat 141, and lens barrel 130 is arranged at the inner side of camera lens back seat 141.
Because the length of optical imaging lens 1 of the present invention can be only 4.1～4.4 millimeter, therefore allow the size design ground of portable electronic devices 100 more compactly, and still can provide good optical property and image quality.Therefore, various embodiments 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.
Separately referring to Figure 21, is the second preferred embodiment of the portable electronic devices 200 of application of aforementioned optical imaging lens 1.The main difference of the portable electronic devices 200 of the second preferred embodiment and the portable electronic devices 100 of the first preferred embodiment is: camera lens back seat 141 has the first pedestal 142, the second pedestal 143, coil 144 and magnet assembly 145.The first pedestal 142 for lens barrels 130, arrange and fit with lens barrel 130 outsides and along axis I-I' arrange, the second pedestal 143 is along axis I-I' and around the arranged outside of the first pedestal 142.Coil 144 is arranged between the outside of the first pedestal 142 and the inner side of the second pedestal 143.Magnet assembly 145 is arranged between the outside of coil 144 and the inner side of the second pedestal 143.
The first pedestal 142 can and be arranged on optical imaging lens 1 in lens barrel 130 along axis I-I' with lens barrel 130, and the optical axis 4 of Fig. 1 moves.146 of image sensor back seats fit with the second pedestal 143.Optical filtering part 60, as infrared filter, is arranged on image sensor back seat 146.Other modular constructions of the second embodiment portable electronic devices 200 are similar with the portable electronic devices 100 of the first embodiment, therefore do not repeat them here.
Although specifically show and introduced the present invention in conjunction with preferred embodiment; but those skilled in the art should be understood that; within 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 (16)
1. an optical imaging lens is sequentially comprised as side by a thing side on an optical axis:
One has the first lens of refractive index, and it has towards one first thing side of this thing side and one first picture side as side towards this, and this first thing side is a convex surface, and this first has a concave surface portion that is positioned at circumference near zone as side;
One aperture;
One has the second lens of refractive index, and it has towards one second thing side of this thing side, and this second thing side has a convex surface part that is positioned at circumference near zone;
One has the 3rd lens of refractive index, and it has towards one the 3rd thing side of this thing side, and the 3rd thing side has a concave surface portion that is positioned at circumference near zone;
One has the 4th lens of refractive index; And
One has the 5th lens of refractive index, and it has one the 5th picture side as side towards this, and the 5th has a concave surface portion that is positioned at optical axis near zone as side;
Wherein, the 5th lens are a glass lens, and this optical imaging lens only possesses five eyeglasses with refractive index.
2. optical imaging lens as claimed in claim 1, it is characterized in that, gap width between this first lens and this second lens is AG12, gap width between the 3rd lens and the 4th lens is AG34, the center thickness of the 4th lens on this optical axis is T4, and meets 2.2≤T4/ (AG12+AG34).
3. optical imaging lens as claimed in claim 2, it is characterized in that, gap width between these second lens and the 3rd lens is AG23, and the gap width between the 4th lens and the 5th lens is AG45, and meets 1.7≤AG23/ (AG12+AG45).
4. optical imaging lens as claimed in claim 3, is characterized in that, this first lens is AAG to the width summation of each clearance between the 5th lens, and the center thickness of this first lens on this optical axis is T1, and meets 2.3≤AAG/T1.
5. optical imaging lens as claimed in claim 3, is characterized in that, this first lens to the center thickness summation of the 5th lens on this optical axis is ALT, and meets ALT/T4≤2.8.
6. optical imaging lens as claimed in claim 2, is characterized in that, the center thickness of this first lens on this optical axis is T1, and the center thickness of these the second lens on this optical axis is T2, and meets 1≤T2/T1.
7. optical imaging lens as claimed in claim 6, is characterized in that, the gap width between these second lens and the 3rd lens is AG23, and the center thickness of the 3rd lens on this optical axis is T3, and meets 1.5≤AG23/T3.
8. optical imaging lens as claimed in claim 6, is characterized in that, this first lens is ALT to the center thickness summation of the 5th lens on this optical axis, and the gap width between these second lens and the 3rd lens is AG23, and meets ALT/AG23≤5.5.
9. optical imaging lens as claimed in claim 1, it is characterized in that, gap width between this first lens and this second lens is AG12, gap width between the second lens and the 3rd lens is AG23, gap width between the 4th lens and the 5th lens is AG45, and meets 1.7≤AG23/ (AG12+AG45).
10. optical imaging lens as claimed in claim 9, is characterized in that, the center thickness of the 3rd lens on this optical axis is T3, and the center thickness of the 4th lens on this optical axis is T4, and meets 3.3≤T4/T3.
11. optical imaging lens as claimed in claim 9, is characterized in that, the center thickness of these the second lens on this optical axis is T2, and the center thickness of the 3rd lens on this optical axis is T3, and meet 1.3≤T2/T3.
12. optical imaging lens as claimed in claim 11, is characterized in that, the gap width between the 3rd lens and the 4th lens is AG34, and meet 1.6≤T2/ (AG12+AG34)≤2.5.
13. optical imaging lens as claimed in claim 1, is characterized in that, the center thickness of this first lens on this optical axis is T1, and the center thickness of these the second lens on this optical axis is T2, and meet 1≤T2/T1.
14. optical imaging lens as claimed in claim 13, it is characterized in that, gap width between first lens and this second lens is AG12, gap width between the second lens and the 3rd lens is AG23, gap width between the 3rd lens and the 4th lens is AG34, and meets 1.6≤AG23/ (AG12+AG34).
15. optical imaging lens as claimed in claim 14, is characterized in that, the gap width between the 4th lens and the 5th lens is AG45, and meet 1.9≤T2/ (AG12+AG45)≤3.3.
16. 1 kinds of electronic installations, comprise:
One casing; And
One image module, is arranged in this casing, and this image module comprises:
An optical imaging lens as described in any one in claim the 1 to 15;
For the lens barrel arranging for this optical imaging lens;
For the module back seat unit arranging for this lens barrel;
For the substrate arranging for this module back seat unit; And
Be arranged at this substrate and be positioned at the image sensor that one of this optical imaging lens looks like side.
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| CN109425955A (en) * | 2017-08-23 | 2019-03-05 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
| CN111045192A (en) * | 2019-12-30 | 2020-04-21 | 浙江舜宇光学有限公司 | Optical imaging lens group |
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