CN104238085A

CN104238085A - Optical imaging lens and electronic device with optical imaging lens

Info

Publication number: CN104238085A
Application number: CN201410267072.2A
Authority: CN
Inventors: 陈思翰; 公金辉
Original assignee: Genius Electronic Optical Xiamen Co Ltd
Current assignee: Genius Electronic Optical Xiamen Co Ltd
Priority date: 2014-06-16
Filing date: 2014-06-16
Publication date: 2014-12-24

Abstract

The invention relates to an optical imaging lens and an electronic device with the optical imaging lens. The optical imaging lens comprises a first lens and a second lens from the objective side to the image side, wherein a convex face part located in the region beside the optical axis is arranged on the image side face of the first lens, and a concave face part located in the region beside the optical axis is arranged on the objective side face of the second lens. The optical imaging lens only comprises the two lenses and has the refractive index. The electronic device comprises a case, an image module, any lens of the optical imaging lens, a lens cone, a module backseat unit, a substrate and an image sensor, wherein the image module is installed in the case, the lens cone is used for arrangement of the optical imaging lens, the module backseat unit is used for arrangement of the lens cone, the substrate is used for arrangement of the module backseat unit, and the image sensor is arranged on the substrate and located on the image side of the optical imaging lens. The electronic device and the optical imaging lens of the electronic device maintain good optical performance, and the length of the lens is effectively reduced.

Description

Optical imaging lens and apply the electronic installation of this camera lens

Technical field

The present invention relates to optical imaging lens and the electronic installation with optical imaging lens, particularly relate to the optical imaging lens of two-piece type lens and apply the electronic installation of this camera lens.

Background technology

The specification of consumption electronic products is maked rapid progress, and pursues compact step and does not also slow down, and therefore the key part and component of the first-class electronic product of optical frames also must continue to promote, to meet consumer demand in specification.And the most important characteristic of optical lens is nothing more than being exactly image quality and volume.Because two-piece type optical lens is structurally comparatively simple, and the object of reduced volume can be reached, but also because sheet number is few, be not easy aberration correction, aberration and cause image quality not good.In sum, two-piece type optical lens is not easily taken into account on volume and image quality.

Not simple camera lens scaled down good for image quality just can being produced of optical lens design has image quality and microminiaturized optical lens concurrently, and design process involves material behavior, also must consider the practical problems in the production faces such as assembling yield.

In sum, the technical difficulty of microminiaturized camera lens obviously exceeds conventional lenses, therefore how to produce the optical lens meeting consumption electronic products demand, and continue to promote its image quality, be the target that those skilled in the art earnestly pursue for a long time always.

Summary of the invention

The object of the invention is to, a kind of electronic installation and its optical imaging lens are provided, by controlling concave-convex curved surface arrangement and/or the characteristic such as refractive index configuration of each lens, and under maintaining the condition of system performance, shorten system length in maintenance favorable optical performance.

According to the present invention, a kind of optical imaging lens is provided, each lens all have one towards thing side and the thing side and that imaging light is passed through towards image side and the face, image side making imaging light pass through, comprised to image side by thing side: one is positioned in face, image side the first lens that optical axis near zone has a convex surface part; One is positioned in thing side the second lens that optical axis near zone has a concave part; Wherein, this optical imaging lens only includes above-mentioned two lens and has refractive index.

Secondly, the ratio of the present invention's optionally control section parameter satisfies condition formula, as:

This optical imaging lens meets following condition formulae (1):

0.5≦TTL/BFL≦4.0。Conditional (1)

Or this optical imaging lens meets following condition formulae (2):

TTL/G2F≥5.9。Conditional (2)

Or this optical imaging lens meets following condition formulae (3):

BFL/T2≥2.3。Conditional (3)

Or this optical imaging lens meets following condition formulae (4):

TTL/T2≥4.9。Conditional (4)

Or this optical imaging lens meets following condition formulae (5):

BFL/G12≥3.8。Conditional (5)

Or this optical imaging lens meets following condition formulae (6):

BFL/G2F≥3.2。Conditional (6)

Or this optical imaging lens meets following condition formulae (7):

TTL/T1≥2.1。Conditional (7)

Or this optical imaging lens meets following condition formulae (8):

ALT/G12≥3.3。Conditional (8)

Or this optical imaging lens meets following condition formulae (9):

TTL/ALT≥1.7。Conditional (9)

Or this optical imaging lens meets following condition formulae (10):

ALT/BFL≥0.5。Conditional (10)

Or this optical imaging lens meets following condition formulae (11):

v1-v2≥20。Conditional (11)

Or this optical imaging lens meets following condition formulae (12):

TTL/G12≥0.1。Conditional (12)

Or this optical imaging lens meets following condition formulae (13):

ALT/T1≥1.0。Conditional (13)

Or this optical imaging lens meets following condition formulae (14):

ALT/G2F≥2.2。Conditional (14)

Or this optical imaging lens meets following condition formulae (15):

ALT/T2≥2.2。Conditional (15)

Or this optical imaging lens meets following condition formulae (16):

BFL/T1≥1.0。Conditional (16)

Aforementioned listed exemplary qualified relation also optionally can merge and is applied in embodiments of the invention, is not limited to this.The parameter of above-mentioned qualified relation refers to the definition in the form of embodiment.

When implementing of the present invention, except above-mentioned conditional, also thin portion's structures such as the concave-convex curved surface arrangement of other more lens and/or the parts such as refractive index and/or extra increase aperture can be gone out for two lens additional designs, to strengthen the control to system performance and/or resolution for single lens or popularity.Such as: these first lens have positive refractive index, and also comprise an aperture, and before this aperture is positioned at the first lens; These first lens are positioned at circumference near zone in thing side and have a convex surface part; These second lens have negative refractive index, and these second lens are positioned at circumference near zone in thing side and have a concave part; These first lens are positioned at optical axis near zone in thing side and have a convex surface part, and these first lens are positioned at circumference near zone in face, image side and have a convex surface part; These second lens are positioned at optical axis near zone in face, image side and have a concave part, and these second lens are positioned at circumference near zone in face, image side and have a convex surface part.It is noted that, the characteristics such as the exemplary thin portion structure listed by this and/or refractive index also under conflict free situation, optionally can merge and are applied in the middle of other embodiments of the present invention, be not limited to this.

The present invention can according to aforesaid various optical imaging lens, a kind of electronic installation is provided, comprise: a casing and an image module, be mounted in this casing, and comprise the arbitrary optical imaging lens of the present invention, one for arrange for this optical imaging lens lens barrel, one for the module rear seat unit arranged for this lens barrel, a substrate for arranging for this module rear seat unit, and one is arranged at this substrate and is positioned at the image sensor of this optical imaging lens image side.

Can learning in above-mentioned, electronic installation of the present invention and its optical imaging lens, by controlling concave-convex curved surface arrangement and/or the design such as refractive index of each lens, to maintain favorable optical performance, and effectively shortening lens length.

Accompanying drawing explanation

Fig. 1 is the cross-sectional view of lens in embodiments of the invention.

Fig. 2 is the cross-sectional view of the two-piece type lens of the optical imaging lens of the first embodiment of the present invention.

Fig. 3 a is the schematic diagram of the longitudinal spherical aberration of the optical imaging lens of the first embodiment of the present invention.

Fig. 3 b is the schematic diagram of the astigmatism of the optical imaging lens of the first embodiment of the present invention.

Fig. 3 c is the schematic diagram of the distortion aberration of the optical imaging lens of the first embodiment of the present invention.

Fig. 4 is the cross-sectional view of the two-piece type lens of the optical imaging lens of the second embodiment of the present invention.

Fig. 5 a is the schematic diagram of the longitudinal spherical aberration of the optical imaging lens of the second embodiment of the present invention.

Fig. 5 b is the schematic diagram of the astigmatism of the optical imaging lens of the second embodiment of the present invention.

Fig. 5 c is the schematic diagram of the distortion aberration of the optical imaging lens of the second embodiment of the present invention.

Fig. 6 is the cross-sectional view of the two-piece type lens of the optical imaging lens of the third embodiment of the present invention.

Fig. 7 a is the schematic diagram of the longitudinal spherical aberration of the optical imaging lens of the third embodiment of the present invention.

Fig. 7 b is the schematic diagram of the astigmatism of the optical imaging lens of the third embodiment of the present invention.

Fig. 7 c is the schematic diagram of the distortion aberration of the optical imaging lens of the third embodiment of the present invention.

Fig. 8 is the cross-sectional view of the two-piece type lens of the optical imaging lens of the fourth embodiment of the present invention.

Fig. 9 a is the schematic diagram of the longitudinal spherical aberration of the optical imaging lens of the fourth embodiment of the present invention.

Fig. 9 b is the schematic diagram of the astigmatism of the optical imaging lens of the fourth embodiment of the present invention.

Fig. 9 c is the schematic diagram of the distortion aberration of the optical imaging lens of the fourth embodiment of the present invention.

Figure 10 is the cross-sectional view of the two-piece type lens of the optical imaging lens of the fifth embodiment of the present invention.

Figure 11 a is the schematic diagram of the longitudinal spherical aberration of the optical imaging lens of the fifth embodiment of the present invention.

Figure 11 b is the schematic diagram of the astigmatism of the optical imaging lens of the fifth embodiment of the present invention.

Figure 11 c is the schematic diagram of the distortion aberration of the optical imaging lens of the fifth embodiment of the present invention.

Figure 12 is the cross-sectional view of the two-piece type lens of the optical imaging lens of the sixth embodiment of the present invention.

Figure 13 a is the schematic diagram of the longitudinal spherical aberration of the optical imaging lens of the sixth embodiment of the present invention.

Figure 13 b is the schematic diagram of the astigmatism of the optical imaging lens of the sixth embodiment of the present invention.

Figure 13 c is the schematic diagram of the distortion aberration of the optical imaging lens of the sixth embodiment of the present invention.

Figure 14 is the cross-sectional view of the two-piece type lens of the optical imaging lens of the seventh embodiment of the present invention.

Figure 15 a is the schematic diagram of the longitudinal spherical aberration of the optical imaging lens of the seventh embodiment of the present invention.

Figure 15 b is the schematic diagram of the astigmatism of the optical imaging lens of the seventh embodiment of the present invention.

Figure 15 c is the schematic diagram of the distortion aberration of the optical imaging lens of the seventh embodiment of the present invention.

Embodiment

For further illustrating each embodiment, the invention provides drawings attached.These accompanying drawings 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 embodiments 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.

This section of instructions said " lens have positive refractive index (or negative refractive index) ", refers to that described lens are positioned at optical axis near zone and have positive refractive index (or negative refractive index)." the thing side (or face, image side) of lens comprises the convex surface part (or concave part) being positioned at certain region ", refer to that this region is close to the exterior lateral area in this region in radial direction, towards being parallel to the direction of optical axis more " outwardly convex " (or " caving inward ").For Fig. 1, wherein I is optical axis and these lens are for axis of symmetry is radially symmetrical with this optical axis I, these lens thing side has convex surface part in a-quadrant, B region has concave part and C region has convex surface part, reason is that a-quadrant is close to the exterior lateral area (i.e. B region) in this region in radial direction, towards the direction more outwardly convex being parallel to optical axis, B region then more caves inward compared to C region, and C region compared to E region also more outwardly convex in like manner." be positioned at circumference near zone ", refer to be positioned on lens the curved surface that only passes through for imaging light be positioned at circumference near zone, that is the C region in figure, wherein, imaging light includes chief ray (chief ray) Lc and marginal ray (marginal ray) Lm." be positioned at optical axis near zone " and refer 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.In addition, these lens also comprise an extension E, are loaded in an optical imaging lens with for this lens combination, 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 the extension asking accompanying drawing succinctly all to eliminate part.

In addition, for convenience of explanation, first defined declaration is carried out to the english abbreviation of each optical property parameter term related in optical imaging lens of the present invention below.In follow-up explanation, be directly described with english abbreviation, wherein the definition in this form is all continued to use in the definition of each english abbreviation.

Parameter	Definition
		T1	The thickness of the first lens on optical axis
G12	First distance of lens thing side, face to the second, lens image side on optical axis
		T2	The thickness of the second lens on optical axis
G2F	The distance of second face, lens image side to infrared filter thing side on optical axis
		TF	The thickness of infrared filter on optical axis
GFP	Face, infrared filter image side is to the distance of imaging surface on optical axis
		f1	The focal length of the first lens

f2	The focal length of the second lens
		n1	The refractive index of the first lens
n2	The refractive index of the second lens
		v1	The Abbe number of the first lens
v2	The Abbe number of the second lens
		EFL	The whole focal length of system
TTL	First lens thing side is to the length of imaging surface on optical axis
		ALT	The sum total of the lens thickness of the first lens to the second lens on optical axis
Gaa	The sum total of clearance on optical axis between first lens thing side, face to the second, lens image side
		BFL	Second face, lens image side is to the length of imaging surface on optical axis

Optical imaging lens of the present invention, be made up of the first lens sequentially arranged from thing side to image side along an optical axis and the second lens, each lens all have one towards thing side and the thing side and that imaging light is passed through towards image side and the face, image side making imaging light pass through.Optical imaging lens of the present invention only has two panels to have the lens of refractive index altogether, by designing detail characteristic and/or the refractive index configuration of each lens, and can provide good optical property, and expand visual angle.In the present invention, the common detail characteristic of each embodiment lens is as follows: the first lens are positioned at optical axis near zone in face, image side and have a convex surface part, and the second lens are positioned at optical axis near zone in thing side and have a concave part.

Mainly consider optical characteristics and the field angle of optical imaging lens in the characteristic of this two panels eyeglass of this design, the first lens are positioned at optical axis near zone in face, image side and have a convex surface part, and the second lens are positioned at optical axis near zone in thing side and have a concave part.Two eyeglasses are arranged in pairs or groups aforementioned detailing jointly, and the present invention can reach the effect of the image quality of raising system.

Secondly, in the various embodiments of the invention, optionally the ratio of extra controling parameters meets other relational expressions, designs to possess favorable optical performance, entire length and effectively shorten and technically feasible optical imaging lens to assist deviser, as:

This optical imaging lens meets following condition formulae (1):

0.5≦TTL/BFL≦4.0。Conditional (1)

Or this optical imaging lens meets following condition formulae (2):

TTL/G2F≥5.9。Conditional (2)

Or this optical imaging lens meets following condition formulae (3):

BFL/T2≥2.3。Conditional (3)

Or this optical imaging lens meets following condition formulae (4):

TTL/T2≥4.9。Conditional (4)

Or this optical imaging lens meets following condition formulae (5):

BFL/G12≥3.8。Conditional (5)

Or this optical imaging lens meets following condition formulae (6):

BFL/G2F≥3.2。Conditional (6)

Or this optical imaging lens meets following condition formulae (7):

TTL/T1≥2.1。Conditional (7)

Or this optical imaging lens meets following condition formulae (8):

ALT/G12≥3.3。Conditional (8)

Or this optical imaging lens meets following condition formulae (9):

TTL/ALT≥1.7。Conditional (9)

Or this optical imaging lens meets following condition formulae (10):

ALT/BFL≥0.5。Conditional (10)

Or this optical imaging lens meets following condition formulae (11):

v1-v2≥20。Conditional (11)

Or this optical imaging lens meets following condition formulae (12):

TTL/G12≥0.1。Conditional (12)

Or this optical imaging lens meets following condition formulae (13):

ALT/T1≥1.0。Conditional (13)

Or this optical imaging lens meets following condition formulae (14):

ALT/G2F≥2.2。Conditional (14)

Or this optical imaging lens meets following condition formulae (15):

ALT/T2≥2.2。Conditional (15)

Or this optical imaging lens meets following condition formulae (16):

BFL/T1≥1.0。Conditional (16)

Aforementioned listed exemplary qualified relation also optionally can merge and is applied in embodiments of the invention, is not limited to this.

Above-mentioned qualified relation is set out according to parameters change and manufacturing technology door, optical characteristics angle that is good and bad and field angle magnitude relationship, above-mentioned conditional is proposed, can design possess favorable optical performance, system length shortens and technically feasible in feasible, manufacture optical imaging lens.

Wherein, the design of the conditional (1) of 0.5≤TTL/BFL≤4.0 be conceived to lens length shorten the difficulty or ease of manufacturing process and the rationality of lens optical performance quality consider.

In aforementioned condition formula (2) ~ (10) and (12) ~ (16), its design is the configuration controlling each parameter by this, assist to avoid denominator to have large numerical value, and be unfavorable for shortening lens length, also avoid too small molecule to promote the degree of difficulty of processing procedure simultaneously.Therefore, when meeting aforementioned condition formula (2) ~ (10) and (12) ~ (16), each parameter has and preferably configures, and can produce good image quality under the prerequisite maintaining suitable yield.Except the scope listed by aforementioned condition formula (2) ~ (10) and (12) ~ (16), further, in this suggestion: TTL/G2F value being better between 5.9 ~ 10.1, BFL/T2 value being better between 2.3 ~ 7.2, TTL/T2 value being better between 4.9 ~ 14.6, BFL/G12 value being better between 3.8 ~ 13.3, BFL/G2F value being better between 3.2 ~ 5.3, TTL/T1 value being better between 2.1 ~ 5.0, ALT/G12 value being better between 3.3 ~ 12.2, TTL/ALT value being better between 1.7 ~ 3.3, ALT/BFL value being better between 0.5 ~ 1.1, TTL/G12 value being better between 0.1 ~ 0.3, ALT/T1 value being better between 1.0 ~ 1.9, ALT/G2F value being better between 2.2 ~ 4.6, ALT/T2 value being better between 2.2 ~ 6.8, BFL/T1 value being better between 1.0 ~ 2.9, when meeting this little scope, then can maintain less volume further.

The design of aforementioned condition formula (11) be conceived to the first lens compare the second lens there is larger Abbe number time, under the prerequisite ensureing optical property, be more conducive to shorten lens length meeting under manufacturing process.

When implementing of the present invention, except above-mentioned conditional, also thin portion's structures such as the concave-convex curved surface arrangement of other more lens and/or the parts such as refractive index and/or extra increase aperture can be gone out for two lens additional designs, to strengthen the control to system performance and/or resolution for single lens or popularity.Such as: these first lens have positive refractive index, and also comprise an aperture, and before this aperture is positioned at the first lens; These first lens are positioned at circumference near zone in thing side and have a convex surface part; These second lens have negative refractive index, and these second lens are positioned at circumference near zone in thing side and have a concave part; These first lens are positioned at optical axis near zone in thing side and have a convex surface part, and these first lens are positioned at circumference near zone in face, image side and have a convex surface part; These second lens are positioned at optical axis near zone in face, image side and have a concave part, and these second lens are positioned at circumference near zone in face, image side and have a convex surface part etc.It is noted that, the characteristics such as the exemplary thin portion structure listed by this and/or refractive index also under conflict free situation, optionally can merge and are applied in the middle of other embodiments of the present invention, be not limited to this.

On the other hand, if when all lens all being used plastic production, can more highlight the advantage being beneficial to aspheric manufacture, reducing costs and alleviate camera lens weight.

In order to illustrate that the present invention while providing good optical property, can shorten system overall length, below provide multiple embodiment and its detailed optical data to come to launch explanation in detail really.

First embodiment:

Consult shown in Fig. 2, the optical imaging lens 1 of the present invention first preferred embodiment, comprise an aperture 100, first lens 110, second lens 120 by thing side A1 to image side A2, and an optical filtering part 130.These first lens 110 have one towards the thing side 111 and of thing side A1 towards the face, image side 112 of image side A2, and these second lens 120 have one towards the thing side 121 and of thing side A1 towards the face, image side 122 of image side A2.Optical filtering part 130 is exemplarily an infrared filter (IR cut filter) at this, be located between the second lens 12 and imaging surface 140, optical filtering part 130 have equally one towards thing side A1 thing side 131 and have one towards the face, image side 132 of image side A2.Light through optical imaging lens 1 is filtered out the wavelength of specific band by optical filtering part 130, 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 140 and affect image quality.

Two lens of optical imaging lens 1 exemplarily formed with plastic material at this, form thin portion structure as follows:

These first lens 110 have positive refractive index, have one towards the thing side 111 and of thing side A1 towards the face, image side 112 of image side A2, and be positioned at optical axis near zone in thing side 111 there is a convex surface part 1111, be positioned at circumference near zone in thing side 111 there is a convex surface part 1112, be positioned at optical axis near zone in face, image side 112 there is a convex surface part 1121, be positioned at circumference near zone in face, image side 112 there is a convex surface part 1122.

These second lens 120 have positive refractive index, have one towards the thing side 121 and of thing side A1 towards the face, image side 122 of image side A2, and be positioned at optical axis near zone in thing side 121 there is a concave part 1211, be positioned at circumference near zone in thing side 121 there is a concave part 1212, be positioned at optical axis near zone in face, image side 122 there is a convex surface part 1221, be positioned at circumference near zone in face, image side 122 there is a convex surface part 1222.

In this preferred embodiment, above-mentioned first lens 110 and the second lens 120 are only had to possess refractive index.

Thing side 121, the face, image side 122 of the thing side 111 of above-mentioned first lens 110, face, image side 112 and the second lens 120 are aspheric surface, and these four aspheric shapes all represent with following fitting equation:

Z (Y) = \frac{Y^{2}}{R} / (1 + \sqrt{1 - (1 + K) \frac{Y^{2}}{R^{2}}}) + Σ_{i = 1}^{n} a_{i} \times Y^{i}

Y: the point in aspheric curve and the distance of optical axis;

Z: the aspheric surface degree of depth (in aspheric surface, distance optical axis is the point of Y, with the tangent plane being tangential on summit on aspheric surface optical axis, and vertical range between the two);

R: the radius-of-curvature of lens surface;

K: circular cone coefficient;

Ai: the i-th rank asphericity coefficient.

Each aspheric parameter detailed data of each lens in the optical imaging lens 1 of this first embodiment is as shown in following table 1-1.

Table 1-1:

In the present embodiment, all clearance is there is between the imaging surface 140 designing the first lens 110, second lens 120, optical filtering part 130 and image sensor, as: there is clearance d1 between the first lens 110 and the second lens 120, between the second lens 120 and optical filtering part 130, there is clearance d2, between optical filtering part 130 and the imaging surface 140 of image sensor, there is clearance d3.But in other embodiments, aforementioned wherein arbitrary clearance also can not be had, and as: be corresponding each other by the surface profile design of two relative lens, and can fit each other, to eliminate clearance therebetween.

About each optical characteristics of each lens in the optical imaging lens 1 of the present embodiment and the width of each clearance as shown in following table 1-2.

Table 1-2:

About the systematic parameter of the optical imaging lens 1 of the present embodiment as shown in following table 1-3.

Table 1-3:

After upper calculating, the optical imaging lens 1 of this first embodiment is all the restrictions meeting above-mentioned conditional, and from the first thickness (the i.e. TTL of lens 110 thing side 111 to imaging surface 140 on optical axis, system overall length) be 2.479338363mm, really shorten the lens length of optical imaging lens 1.

On the other hand, in the middle of Fig. 3 a to Fig. 3 c, the optical imaging lens 1 of the present embodiment longitudinal spherical aberration (Fig. 3 a), astigmatism (Fig. 3 b, the sagitta of arc, meridian direction), distortion aberration (Fig. 3 c) performance 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.

Second embodiment:

Consult shown in Fig. 4, use the label similar to the first embodiment to indicate similar assembly in the optical imaging lens 2 of the present invention second preferred embodiment, label beginning changes 2 into only as used herein, such as the first lens 210, its thing side is 211, second lens 220, its face, image side is 222, and other reference numerals does not repeat them here.

The optical imaging lens 2 of the present embodiment, comprises an aperture 200, first lens 210, second lens 220 by thing side A1 to image side A2, and an optical filtering part 230.The refractive index of the first lens 210 of this embodiment and the concavo-convex configuration of lens surface all identical with the first embodiment, the refractive index of the second lens 220 and the concavo-convex configuration of lens surface all identical with the first embodiment; Only the radius-of-curvature of each lens surface of the present embodiment, lens thickness, the related optical parameter such as air gap width and back focal length are different from the first embodiment.In this case clearer display drawing, the feature of concave-convex surface configuration only indicates and the first embodiment difference, and omits the label of something in common.

In this preferred embodiment, above-mentioned first lens 210 and the second lens 220 are only had to possess refractive index.

Thing side 221, the face, image side 222 of the thing side 211 of above-mentioned first lens 210, face, image side 212 and the second lens 220 are aspheric surface, and these four aspheric shapes are all that the fitting equation identical with the first embodiment represents.

Each aspheric parameter detailed data of each lens in the optical imaging lens 2 of this second embodiment is as shown in following table 2-1.

Table 2-1:

About each optical characteristics of each lens in the optical imaging lens 2 of the present embodiment and the width of each clearance as shown in following table 2-2.

Table 2-2:

About the systematic parameter of the optical imaging lens 2 of the present embodiment as shown in following table 2-3.

Table 2-3:

After upper calculating, the optical imaging lens 2 of this second embodiment is all the restrictions meeting above-mentioned conditional, and from the first thickness (the i.e. TTL of lens 210 thing side 211 to imaging surface 240 on optical axis, system overall length) be 2.496800056mm, really shorten the lens length of optical imaging lens 2.

On the other hand, in the middle of Fig. 5 a to Fig. 5 c, the optical imaging lens 2 of the present embodiment longitudinal spherical aberration (Fig. 5 a), astigmatism (Fig. 5 b, the sagitta of arc, meridian direction), distortion aberration (Fig. 5 c) performance all very good.

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.

In addition, the optical imaging lens 2 of this second embodiment also has following effect compared to the optical imaging lens 1 of the first embodiment: the aperture F/# of the second embodiment is less than the first embodiment (F/# value is less, and aperture is larger); The angle of half field-of view of the second embodiment is greater than the first embodiment; Therefore second embodiment is easy to manufacture than the first embodiment that yield is higher.

3rd embodiment:

Consult shown in Fig. 6, use the label similar to the first embodiment to indicate similar assembly in the optical imaging lens 3 of the present invention the 3rd preferred embodiment, label beginning changes 3 into only as used herein, such as the first lens 310, its thing side is 311, second lens 320, its face, image side is 322, and other reference numerals does not repeat them here.

The optical imaging lens 3 of the present embodiment, comprises an aperture 300, first lens 310, second lens 320 by thing side A1 to image side A2, and an optical filtering part 330.The refractive index of the first lens 310 of this embodiment and the concavo-convex configuration of lens surface all identical with the first embodiment, the refractive index of the second lens 320 is identical with the first embodiment, the concavo-convex configuration of its lens surface and the first embodiment similar; Only the radius-of-curvature of each lens surface of the present embodiment, lens thickness, the related optical parameter such as air gap width and back focal length are different from the first embodiment.In this case clearer display drawing, the feature of concave-convex surface configuration only indicates and the first embodiment difference, and omits the label of something in common.Specifically, the two difference is: the second lens 320 are positioned at circumference near zone and have a concave part 3222 in face, image side 322.

In this preferred embodiment, above-mentioned first lens 310 and the second lens 320 are only had to possess refractive index.

Thing side 321, the face, image side 322 of the thing side 311 of above-mentioned first lens 310, face, image side 312 and the second lens 320 are aspheric surface, and these four aspheric shapes are all that the fitting equation identical with the first embodiment represents.

Each aspheric parameter detailed data of each lens in the optical imaging lens 3 of the 3rd embodiment is as shown in following table 3-1.

Table 3-1:

About each optical characteristics of each lens in the optical imaging lens 3 of the present embodiment and the width of each clearance as shown in following table 3-2.

Table 3-2:

About the systematic parameter of the optical imaging lens 3 of the present embodiment as shown in following table 3-3.

Table 3-3:

After upper calculating, the optical imaging lens 3 of the 3rd embodiment is all the restrictions meeting above-mentioned conditional, and from the first thickness (the i.e. TTL of lens 310 thing side 311 to imaging surface 340 on optical axis, system overall length) be 2.285392030mm, really shorten the lens length of optical imaging lens 3.

On the other hand, in the middle of Fig. 7 a to Fig. 7 c, the optical imaging lens 3 of the present embodiment longitudinal spherical aberration (Fig. 7 a), astigmatism (Fig. 7 b, the sagitta of arc, meridian direction), distortion aberration (Fig. 7 c) performance all very good.

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.

In addition, the optical imaging lens 3 of the 3rd embodiment also has following effect compared to the optical imaging lens 1 of the first embodiment: the lens length TTL of the 3rd embodiment is less than the first embodiment; Therefore 3rd embodiment is easy to manufacture than the first embodiment that yield is higher.

4th embodiment:

Consult shown in Fig. 8, use the label similar to the first embodiment to indicate similar assembly in the optical imaging lens 4 of the present invention the 4th preferred embodiment, label beginning changes 4 into only as used herein, such as the first lens 410, its thing side is 411, second lens 420, its face, image side is 422, and other reference numerals does not repeat them here.

The optical imaging lens 4 of the present embodiment, comprises an aperture 400, first lens 410, second lens 420 by thing side A1 to image side A2, and an optical filtering part 430.The refractive index of the first lens 410 of this embodiment and the concavo-convex configuration of lens surface all identical with the first embodiment, the refractive index of the second lens 420 is identical with the first embodiment, the concavo-convex configuration of its lens surface and the first embodiment similar; Only the radius-of-curvature of each lens surface of the present embodiment, lens thickness, the related optical parameter such as air gap width and back focal length are different from the first embodiment.In this case clearer display drawing, the feature of concave-convex surface configuration only indicates and the first embodiment difference, and omits the label of something in common.Specifically, the two difference is: the second lens 420 are positioned at optical axis near zone and have a concave part 4221 in face, image side 422.

In this preferred embodiment, above-mentioned first lens 410 and the second lens 420 are only had to possess refractive index.

Thing side 421, the face, image side 422 of the thing side 411 of above-mentioned first lens 410, face, image side 412 and the second lens 420 are aspheric surface, and these four aspheric shapes are all that the fitting equation identical with the first embodiment represents.

Each aspheric parameter detailed data of each lens in the optical imaging lens 4 of the 4th embodiment is as shown in following table 4-1.

Table 4-1:

About each optical characteristics of each lens in the optical imaging lens 4 of the present embodiment and the width of each clearance as shown in following table 4-2.

Table 4-2:

About the systematic parameter of the optical imaging lens 4 of the present embodiment as shown in following table 4-3.

Table 4-3:

After upper calculating, the optical imaging lens 4 of the 4th embodiment is all the restrictions meeting above-mentioned conditional, and from the first thickness (the i.e. TTL of lens 410 thing side 411 to imaging surface 440 on optical axis, system overall length) be 2.462044808mm, really shorten the lens length of optical imaging lens 4.

On the other hand, in the middle of Fig. 9 a to Fig. 9 c, the optical imaging lens 4 of the present embodiment longitudinal spherical aberration (Fig. 9 a), astigmatism (Fig. 9 b, the sagitta of arc, meridian direction), distortion aberration (Fig. 9 c) performance all very good.

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.

In addition, the optical imaging lens 4 of the 4th embodiment also has following effect compared to the optical imaging lens 1 of the first embodiment: the lens length TTL of the 4th embodiment is less than the first embodiment; The image quality of the 4th embodiment is better than the first embodiment (aberration, distortion figure); Therefore 4th embodiment is easy to manufacture than the first embodiment that yield is higher.

5th embodiment:

Consult shown in Figure 10, use the label similar to the first embodiment to indicate similar assembly in the optical imaging lens 5 of the present invention the 5th preferred embodiment, label beginning changes 5 into only as used herein, such as the first lens 510, its thing side is 511, second lens 520, its face, image side is 522, and other reference numerals does not repeat them here.

The optical imaging lens 5 of the present embodiment, comprises an aperture 500, first lens 510, second lens 520 by thing side A1 to image side A2, and an optical filtering part 530.The refractive index of the first lens 510 of this embodiment and the concavo-convex configuration of lens surface all identical with the first embodiment, the refractive index of the second lens 520 is identical with the first embodiment, the concavo-convex configuration of its lens surface and the first embodiment similar; Only the radius-of-curvature of each lens surface of the present embodiment, lens thickness, the related optical parameter such as air gap width and back focal length are different from the first embodiment.In this case clearer display drawing, the feature of concave-convex surface configuration only indicates and the first embodiment difference, and omits the label of something in common.Specifically, the two difference is: the second lens 520 are positioned at optical axis near zone and have a concave part 5221 in face, image side 522.

In this preferred embodiment, above-mentioned first lens 510 and the second lens 520 are only had to possess refractive index.

Thing side 521, the face, image side 522 of the thing side 511 of above-mentioned first lens 510, face, image side 512 and the second lens 520 are aspheric surface, and these four aspheric shapes are all that the fitting equation identical with the first embodiment represents.

Each aspheric parameter detailed data of each lens in the optical imaging lens 5 of the 5th embodiment is as shown in following table 5-1.

Table 5-1:

About each optical characteristics of each lens in the optical imaging lens 5 of the present embodiment and the width of each clearance as shown in following table 5-2.

Table 5-2:

About the systematic parameter of the optical imaging lens 5 of the present embodiment as shown in following table 5-3.

Table 5-3:

After upper calculating, the optical imaging lens 5 of the 5th embodiment is all the restrictions meeting above-mentioned conditional, and from the first thickness (the i.e. TTL of lens 510 thing side 511 to imaging surface 540 on optical axis, system overall length) be 2.195958537mm, really shorten the lens length of optical imaging lens 5.

On the other hand, in the middle of Figure 11 a to Figure 11 c, the optical imaging lens 5 of the present embodiment longitudinal spherical aberration (Figure 11 a), astigmatism (Figure 11 b, the sagitta of arc, meridian direction), distortion aberration (Figure 11 c) performance all very good.

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.

In addition, the optical imaging lens 5 of the 5th embodiment also has following effect compared to the optical imaging lens 1 of the first embodiment: the lens length TTL of the 5th embodiment is less than the first embodiment; The image quality of the 5th embodiment is better than the first embodiment (aberration, distortion figure); Therefore 5th embodiment is easy to manufacture than the first embodiment that yield is higher.

6th embodiment:

Consult shown in Figure 12, use the label similar to the first embodiment to indicate similar assembly in the optical imaging lens 6 of the present invention the 6th preferred embodiment, label beginning changes 6 into only as used herein, such as the first lens 610, its thing side is 611, second lens 620, its face, image side is 622, and other reference numerals does not repeat them here.

The optical imaging lens 6 of the present embodiment, comprises an aperture 600, first lens 610, second lens 620 by thing side A1 to image side A2, and an optical filtering part 630.The refractive index of the first lens 610 of this embodiment and the concavo-convex configuration of lens surface all identical with the first embodiment, the refractive index of the second lens 620 is identical with the first embodiment, the concavo-convex configuration of its lens surface and the first embodiment similar; Only the radius-of-curvature of each lens surface of the present embodiment, lens thickness, the related optical parameter such as air gap width and back focal length are different from the first embodiment.In this case clearer display drawing, the feature of concave-convex surface configuration only indicates and the first embodiment difference, and omits the label of something in common.Specifically, the two difference is: the second lens 620 are positioned at optical axis near zone and have a concave part 6221 in face, image side 622.

In this preferred embodiment, above-mentioned first lens 610 and the second lens 620 are only had to possess refractive index.

Thing side 621, the face, image side 622 of the thing side 611 of above-mentioned first lens 610, face, image side 612 and the second lens 620 are aspheric surface, and these four aspheric shapes are all that the fitting equation identical with the first embodiment represents.

Each aspheric parameter detailed data of each lens in the optical imaging lens 6 of the 6th embodiment is as shown in following table 6-1.

Table 6-1:

About each optical characteristics of each lens in the optical imaging lens 6 of the present embodiment and the width of each clearance as shown in following table 6-2.

Table 6-2:

About the systematic parameter of the optical imaging lens 6 of the present embodiment as shown in following table 6-3.

Table 6-3:

After upper calculating, the optical imaging lens 6 of the 6th embodiment is all the restrictions meeting above-mentioned conditional, and from the first thickness (the i.e. TTL of lens 610 thing side 611 to imaging surface 640 on optical axis, system overall length) be 2.469826376mm, really shorten the lens length of optical imaging lens 6.

On the other hand, in the middle of Figure 13 a to Figure 13 c, the optical imaging lens 6 of the present embodiment longitudinal spherical aberration (Figure 13 a), astigmatism (Figure 13 b, the sagitta of arc, meridian direction), distortion aberration (Figure 13 c) performance all very good.

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.

In addition, the optical imaging lens 6 of the 6th embodiment also has following effect compared to the optical imaging lens 1 of the first embodiment: the lens length TTL of the 6th embodiment is less than the first embodiment; The image quality of the 6th embodiment is better than the first embodiment (aberration, distortion figure); Therefore 6th embodiment is easy to manufacture than the first embodiment that yield is higher.

7th embodiment:

Consult shown in Figure 14, use the label similar to the first embodiment to indicate similar assembly in the optical imaging lens 7 of the present invention the 7th preferred embodiment, label beginning changes 7 into only as used herein, such as the first lens 710, its thing side is 711, second lens 720, its face, image side is 722, and other reference numerals does not repeat them here.

The optical imaging lens 7 of the present embodiment, comprises an aperture 700, first lens 710, second lens 720 by thing side A1 to image side A2, and an optical filtering part 730.The refractive index of the first lens 710 of this embodiment and the concavo-convex configuration of lens surface all identical with the first embodiment, the refractive index of the second lens 720 is identical with the first embodiment, the concavo-convex configuration of its lens surface and the first embodiment similar; Only the radius-of-curvature of each lens surface of the present embodiment, lens thickness, the related optical parameter such as air gap width and back focal length are different from the first embodiment.In this case clearer display drawing, the feature of concave-convex surface configuration only indicates and the first embodiment difference, and omits the label of something in common.Specifically, the two difference is: the second lens 720 are positioned at optical axis near zone and have a concave part 7221 in face, image side 722.

In this preferred embodiment, above-mentioned first lens 710 and the second lens 720 are only had to possess refractive index.

Thing side 721, the face, image side 722 of the thing side 711 of above-mentioned first lens 710, face, image side 712 and the second lens 720 are aspheric surface, and these four aspheric shapes are all that the fitting equation identical with the first embodiment represents.

Each aspheric parameter detailed data of each lens in the optical imaging lens 7 of the 7th embodiment is as shown in following table 7-1.

Table 7-1:

About each optical characteristics of each lens in the optical imaging lens 7 of the present embodiment and the width of each clearance as shown in following table 7-2.

Table 7-2:

About the systematic parameter of the optical imaging lens 7 of the present embodiment as shown in following table 7-3.

Table 7-3:

After upper calculating, the optical imaging lens 7 of the 7th embodiment is all the restrictions meeting above-mentioned conditional, and from the first thickness (the i.e. TTL of lens 710 thing side 711 to imaging surface 740 on optical axis, system overall length) be 2.411887316mm, really shorten the lens length of optical imaging lens 7.

On the other hand, in the middle of Figure 15 a to Figure 15 c, the optical imaging lens 7 of the present embodiment longitudinal spherical aberration (Figure 15 a), astigmatism (Figure 15 b, the sagitta of arc, meridian direction), distortion aberration (Figure 15 c) performance all very good.

Therefore, can learn in above-mentioned, the optical imaging lens 7 of the present embodiment can maintain favorable optical performance really, and effectively shortens lens length.

In addition, the optical imaging lens 7 of the 7th embodiment also has following effect compared to the optical imaging lens 1 of the first embodiment: the lens length TTL of the 7th embodiment is less than the first embodiment; Therefore 7th embodiment is easy to manufacture than the first embodiment that yield is higher.

Conclude the T1 calculating above seven embodiments, G12, T2, G2F, TF, GFP, TTL, ALT, BFL, TTL/T1, TTL/G12, TTL/T2, TTL/G2F, ALT/T1, ALT/G12, ALT/T2, ALT/G2F, BFL/T1, BFL/G12, BFL/T2, BFL/G2F, TTL/ALT, ALT/BFL and TTL/BFL value, can find out that optical imaging lens of the present invention can meet aforementioned condition formula (1) really, conditional (2), conditional (3), conditional (4), conditional (5), conditional (6), conditional (7), conditional (8), conditional (9), conditional (10), conditional (12), conditional (13) and/or conditional (15).Above seven embodiments conclude the above-mentioned parameter value of calculating, as shown in table 9 below.

Table 9:

Parameter value	Range lower limit	Range limit	Embodiment 1	Embodiment 2	Embodiment 3	Embodiment 4	Embodiment 5	Embodiment 6	Embodiment 7
										T1	?	?	0.776	0.728	0.550	0.940	0.550	0.751	0.816
G12	?	?	0.250	0.156	0.119	0.113	0.177	0.115	0.119
										T2	?	?	0.252	0.410	0.288	0.202	0.261	0.400	0.270
G2F	?	?	0.295	0.300	0.300	0.300	0.300	0.300	0.300

TF	?	?	0.610	0.610	0.610	0.610	0.610	0.610	0.610
										GFP	?	?	0.295	0.293	0.418	0.297	0.298	0.294	0.298
TTL	?	?	2.479	2.497	2.285	2.462	2.196	2.470	2.412
										ALT	?	?	1.029	1.138	0.838	1.142	0.811	1.151	1.085
BFL	?	?	1.201	1.203	1.328	1.207	1.208	1.204	1.208
										TTL/T1	2.1	5.0	3.194	3.431	4.155	2.619	3.993	3.289	2.957
TTL/G12	0.1	0.3	0.250	0.156	0.119	0.113	0.177	0.115	0.119
										TTL/T2	4.9	14.6	9.829	6.090	7.936	12.167	8.407	6.175	8.940
TTL/G2F	5.9	10.1	8.393	8.323	7.618	8.207	7.320	8.233	8.040
										ALT/T1	1.0	1.9	1.325	1.563	1.524	1.215	1.475	1.533	1.331
ALT/G12	3.3	12.2	4.114	7.291	7.019	10.154	4.595	9.993	9.138
										ALT/T2	2.2	6.8	4.078	2.775	2.910	5.645	3.106	2.877	4.023
ALT/G2F	2.2	4.6	3.482	3.793	2.793	3.808	2.704	3.836	3.618
										BFL/T1	1.0	2.9	1.547	1.653	2.415	1.284	2.197	1.603	1.481
BFL/G12	3.8	13.3	4.803	7.709	11.124	10.730	6.844	10.453	10.169
										BFL/T2	2.3	7.2	4.760	2.934	4.612	5.965	4.625	3.010	4.477
BFL/G2F	3.2	5.3	4.065	4.010	4.427	4.024	4.027	4.013	4.026
										TTL/ALT	1.7	3.3	2.411	2.194	2.727	2.155	2.707	2.146	2.222
ALT/BFL	0.5	1.1	0.857	0.946	0.631	0.946	0.671	0.956	0.899
										TTL/BFL	0.5	4.0	2.065	2.076	1.721	2.040	1.818	2.052	1.997

Because the unpredictability of Optical System Design, under framework of the present invention, meet above-mentioned conditional and preferably can make that lens length of the present invention shortens, available aperture increases, field angle increases, image quality promotes, or assembling Yield lmproved and improve the shortcoming of prior art.

To sum up, the longitudinal spherical aberration of various embodiments of the present invention, astigmatic image error, distortion, respectively lower than ± 0.1mm, ± 0.2mm, ± 2% within.Can learn thus, red, green, blue three kinds represents wavelength and all concentrates near imaging point at the Off-axis-light of differing heights, by the skewness magnitude level of each curve can find out the imaging point deviation of the Off-axis-light of differing heights all obtain control and there is good spherical aberration, aberration, distortion rejection ability.The image quality data of each embodiment in further accompanying drawings, it is also quite close that red, green, blue three kinds represents wavelength distance to each other, and surperficial the present invention is good to the centrality of different wave length light under various regimes and have excellent dispersion rejection ability.Therefore, the present invention by the design of described lens with mutually arrange in pairs or groups, and the image quality of excellence can be produced.

In addition, the system total length of various embodiments of the present invention is all less than 2.5mm, and therefore the present invention under the condition maintaining favorable optical performance, can shorten lens length to reach microminiaturized target really.

Based on above-mentioned optical imaging lens, the present invention also proposes the electronic installation of application of aforementioned optical imaging lens.First preferred embodiment of this electronic installation comprises: a casing and an image module be arranged in casing.Only, for mobile phone, this electronic installation is described at this, but the pattern of electronic installation is not as limit, for example, electronic installation also can include but not limited to camera, flat computer, personal digital assistant (personal digital assistant is called for short PDA) etc.

This image module comprises a foregoing optical imaging lens, as exemplarily selected the optical imaging lens of aforementioned first embodiment, an image sensor being arranged at optical imaging lens image side for the lens barrel arranged for optical imaging lens, a substrate arranged for the module rear seat unit (module housing unit) arranged for lens barrel, this module rear seat unit of confession and at this.Imaging surface is formed at image sensor.

It is noted that, though the present embodiment display optical filtering part, but also can omit the structure of optical filtering part in other embodiments, not be limited with necessity of optical filtering part, and casing, lens barrel and/or module rear seat unit can be single component or multiple assembling components forms, this need not be defined in; Secondly; the image sensor that the present embodiment uses adopts interconnection system chip package (Chip on Board on plate; COB) packaged type is connected directly between on substrate; 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 before image sensor, right the present invention is not as limit.

The two-piece type lens that entirety has refractive index are exemplarily be arranged in lens barrel in the mode that there is a clearance between two lens respectively.

Module rear seat unit comprises one with the camera lens back seat arranged for lens barrel and an image sensor back seat.Lens barrel arranges along an axis coaxle with camera lens back seat, and lens barrel is arranged at inside camera lens back seat, image sensor back seat is between this camera lens back seat and this image sensor, and this image sensor back seat and this camera lens back seat fit, so in other embodiments, not necessarily there is image sensor back seat.

Due to the length only 2.479338363mm of optical imaging lens, therefore by more compact for the size design of this electronic installation 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.

The essential difference of the electronic installation of the second preferred embodiment and the electronic installation of the first preferred embodiment is: camera lens back seat has a First body unit, the second pedestal unit, a coil and a magnet assembly.Fit outside First body unit and lens barrel and arrange along optical axis, the second pedestal unit is along optical axis and around First body unit arranged outside.Coil is arranged on outside First body unit and between the second pedestal unit inside.Magnet assembly is arranged on outside coil and between the second pedestal unit inside.

First body unit can move along optical axis with lens barrel and the optical imaging lens be arranged in lens barrel.Other modular constructions of second embodiment of electronic installation are then similar with the electronic installation of the first embodiment, do not repeat them here.

Similarly, due to the length only 2.479338363mm of optical imaging lens, therefore by more compact for the size design of portable electronic devices 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, electronic installation of the present invention and its optical imaging lens, by the thin portion structure of each lens of control two panels lens and/or the design of refractive index, 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

1. an optical imaging lens, each lens all have one towards thing side and the thing side and that imaging light is passed through towards image side and the face, image side making imaging light pass through, comprised to image side by thing side:

One is positioned in face, image side the first lens that optical axis near zone has a convex surface part;

One is positioned in thing side the second lens that optical axis near zone has a concave part;

Wherein, this optical imaging lens only includes above-mentioned two lens and has refractive index, and meets following condition formulae:

0.5≦TTL/BFL≦4.0；

Wherein, TTL is to the total length of imaging surface by the first lens thing side; BFL is the second face, lens image side to the length of imaging surface on optical axis.

2. optical imaging lens as claimed in claim 1, is characterized in that: these first lens have positive refractive index, and also comprises an aperture, and before this aperture is positioned at the first lens.

3. optical imaging lens as claimed in claim 2, is characterized in that: this optical imaging lens meets following condition formulae:

TTL/G2F≥5.9；

Wherein, G2F is the distance of the second face, lens image side to infrared filter thing side on optical axis.

4. optical imaging lens as claimed in claim 3, is characterized in that: this optical imaging lens meets following condition formulae:

BFL/T2≥2.3；

Wherein, T2 is the thickness of the second lens on optical axis.

5. optical imaging lens as claimed in claim 1, it is characterized in that: these first lens are positioned at circumference near zone in thing side and have a convex surface part, these second lens are positioned at circumference near zone in thing side and have a concave part.

6. optical imaging lens as claimed in claim 5, is characterized in that: this optical imaging lens meets following condition formulae:

TTL/T2≥4.9；

Wherein, T2 is the thickness of the second lens on optical axis.

7. optical imaging lens as claimed in claim 6, is characterized in that: this optical imaging lens meets following condition formulae:

BFL/G12≥3.8；

Wherein, G12 is the first distance of lens thing side, face to the second, lens image side on optical axis.

8. optical imaging lens as claimed in claim 1, it is characterized in that: these second lens have negative refractive index, these second lens are positioned at circumference near zone in thing side and have a concave part.

9. optical imaging lens as claimed in claim 1, is characterized in that: this optical imaging lens meets following condition formulae:

BFL/T2≥2.3；

Wherein, T2 is the thickness of the second lens on optical axis.

10. optical imaging lens as claimed in claim 1, it is characterized in that: these first lens are positioned at optical axis near zone in thing side and have a convex surface part, these first lens are positioned at circumference near zone in face, image side and have a convex surface part.

11. optical imaging lens as claimed in claim 10, is characterized in that: this optical imaging lens meets following condition formulae:

TTL/T1≥2.1；

Wherein, T1 is the thickness of the first lens on optical axis.

12. optical imaging lens as claimed in claim 11, is characterized in that: this optical imaging lens meets following condition formulae:

ALT/G12≥3.3；

Wherein, ALT is the sum total of the lens thickness of the first lens to the second lens on optical axis, and G12 is the first distance of lens thing side, face to the second, lens image side on optical axis.

13. optical imaging lens as claimed in claim 1, is characterized in that: these second lens are positioned at optical axis near zone in face, image side and have a concave part, and these second lens are positioned at circumference near zone in face, image side and have a convex surface part.

14. optical imaging lens as claimed in claim 13, is characterized in that: this optical imaging lens meets following condition formulae:

TTL/ALT≥1.7；

Wherein, ALT is the sum total of the lens thickness of the first lens to the second lens on optical axis.

15. optical imaging lens as claimed in claim 14, is characterized in that: this optical imaging lens meets following condition formulae:

ALT/BFL≥0.5。

16. optical imaging lens as claimed in claim 1, is characterized in that: this optical imaging lens meets following condition formulae:

v1-v2≥20；

Wherein, v1 is the Abbe number of the first lens, and v2 is the Abbe number of the second lens.

17. optical imaging lens as claimed in claim 16, is characterized in that: this optical imaging lens meets following condition formulae:

TTL/T2≥4.9；

Wherein, T2 is the thickness of the second lens on optical axis.

18. optical imaging lens as claimed in claim 17, is characterized in that: this optical imaging lens meets following condition formulae:

ALT/T1≥1.0；

Wherein, ALT is the sum total of the lens thickness of the first lens to the second lens on optical axis, and T1 is the thickness of the first lens on optical axis.

19. optical imaging lens as claimed in claim 18, is characterized in that: this optical imaging lens meets following condition formulae:

ALT/G2F≥2.2；

20. 1 kinds of electronic installations, comprise:

A casing; And

An image module, be mounted in this casing, and comprise one as claim the 1 to the optical imaging lens according to any one of the 19th, one for arrange for this optical imaging lens lens barrel, one for the module rear seat unit arranged for this lens barrel, a substrate for arranging for this module rear seat unit, and one is arranged at this substrate and is positioned at the image sensor of this optical imaging lens image side.