CN105425367A - Portable electronic device and optical imaging lens thereof - Google Patents

Abstract

The present invention relates to a portable electronic device and an optical imaging lens thereof. The optical imaging lens comprises four lenses, wherein an aperture is arranged in front of a first lens; the image side surface of the first lens is convex at a circumference nearby area; the object side surface of a second lens is concave at the circumference nearby area; the object side surface of a fourth lens is convex at an optical axis nearby area, and the image side surface of the fourth lens is concave at the circumference nearby area; and wherein, the optical imaging lens satisfies the following relationships: |v1-v4|<=20; TTL/T4<=10; ALT/T1<=3.5; ALT/AAG<=3.5; and 1.5<=T2/AC12<=2.1. The portable electronic device comprises a casing and an image sensor arranged at the image side of the optical imaging lens. The portable electronic device and the optical imaging lens of the present invention can keep enough optical performance.

Description

Portable electronic devices and its optical imaging lens

Technical field

The present invention is relevant with its optical imaging lens to a kind of portable electronic devices, and especially relevant with its optical imaging lens to the portable electronic devices of application at least three lens.

Background technology

In recent years, universal the making of mobile phone and digital camera comprises optical imaging lens, the image module of module rear seat unit and image sensor etc. is flourish, slim light and handyization of mobile phone and digital camera also allows the miniature requirement of image module more and more high, along with photosensitive coupling component (ChargeCoupledDevice, be called for short CCD) or Complimentary Metal-Oxide semiconductor subassembly (ComplementaryMetal-OxideSemiconductor, be called for short CMOS) technical progress and size reduce, the optical imaging lens be worn in image module also needs reduced volume, but the favorable optical performance of optical imaging lens is also necessity takes part into account.

Wavelength is longer than the light wave of 700nm cannot directly by Human Perception, therefore has anti-interference, low cost, low power consumption and not by the characteristic that human eye is discovered, is therefore often applied on the device such as telechiric device, infrared sensing system.In recent years, interactive electronic device also develops by infrared ray (infrared, IR) or the action of near infrared ray (nearinfrared, NIR) detector detecting user come with user interactive, therefore need badly and will develop near infrared light optical lens system.

But, no matter light source why, and 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 this area product for a long time, the target earnestly pursued of official, educational circles always.

Summary of the invention

One of the present invention object ties up to provides a kind of optical lens system, and it can comprise at least three optical lenses, through the concave-convex curved surface arrangement controlling each lens, and controls correlation parameter with several relational expression, maintains enough optical properties.

According to the present invention, a kind of optical imaging lens is provided, at least three lens are sequentially comprised along an optical axis from thing side to image side, as: comprise one first lens, one second lens and one the 3rd lens, and optionally comprise one the 4th lens, each lens all has refractive index, and 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.

For the ease of representing the parameter of indication of the present invention, definition in this instructions and diagram: TA represents aperture to the distance of next adjacent lens thing side on optical axis (negative sign represents that this range direction is towards thing side) toward image side, T1 represents the thickness of the first lens on optical axis, AC12 represents the air gap width between the first lens and the second lens on optical axis, T2 represents the thickness of the second lens on optical axis, AC23 represents the air gap width between the second lens and the 3rd lens on optical axis, T3 represents the thickness of the 3rd lens on optical axis, AC34 represents the air gap width between the 3rd lens and the 4th lens on optical axis, T4 represents the thickness of the 4th lens on optical axis, AC3F representative as the face, image side of the 3rd lens of last sheet lens to the distance of thing side on optical axis of infrared filter, AC4F representative as the face, image side of the 4th lens of last sheet lens to the distance of thing side on optical axis of infrared filter, TF represents the thickness of infrared filter on optical axis, ACFP represents face, infrared filter image side to the distance of imaging surface on optical axis, EFL or f all represents the effective focal length of optical imaging lens, TTL represents the distance of thing side to imaging surface on optical axis of the first lens, ALT represents the first lens to all lens thickness summation (as: T1s of last a slice lens on optical axis, T2, T3 sum or T1, T2, T3, T4 sum), AAG represents all air gap width summation (as: G12 between the first lens to last a slice lens on optical axis, G23 sum or G12, G23, G34 sum), BFL represents the back focal length of optical imaging lens, and namely the face, image side of last a slice lens is to the distance (as: AC3F of imaging surface on optical axis, TF, ACFP sum or AC4F, TF, ACFP sum), v1 represents the Abbe number of the first lens, v2 represents the Abbe number of the second lens, v3 represents the Abbe number of the 3rd lens, v4 represents the Abbe number of the 4th lens.

According to optical imaging lens provided by the present invention, the face, image side of the first lens is convex at circumference near zone, the thing side of the second lens is recessed at circumference near zone, the thing side of the 4th lens is convex at optical axis near zone, and its face, image side is recessed at circumference near zone, optical imaging lens also meets following relationship:

| v1-v4|≤20 relational expression (1);

TTL/T4≤10 relational expression (2);

ALT/T1≤3.5 relational expression (3);

ALT/AAG≤3.5 relational expression (4); And

1.5≤T2/AC12≤2.1 relational expression (5).

The present invention optionally controls aforementioned parameters, additionally meets following relationship:

ALT/BFL≤1.751 relational expression (6);

T1/T2≤2.244 relational expression (7);

2.237≤BFL/T4 relational expression (8);

ALT/ (T1+T4)≤1.9 relational expression (9);

ALT/T2≤6.3 relational expression (10);

0.7≤AAG/T1 relational expression (11);

2.5≤AAG/AC12 relational expression (12);

TTL/T1≤7 relational expression (13);

TTL≤6 relational expression (14);

Fno≤2.8 relational expression (15);

3≤HFOV relational expression (16);

| v1-v2|≤15 relational expression (17);

TTL/T2≤12 relational expression (18); And/or

T4/AC12≤5 relational expression (19).

Above Fno represents the f-number (fnumber) of this optical imaging lens, and HFOV represents the half angle of view (halffieldofview) of this optical imaging lens.

Aforementioned listed exemplary qualified relation formula, also optionally can merge unequal number amount and be applied in the embodiment of the present invention, be not limited to this.When implementing of the present invention, except foregoing relationships, also can go out the thin portion structures such as the concave-convex curved surface arrangement of other more lens for multiple lens additional designs, to strengthen the control to system performance and/or resolution for single lens or popularity.For example, can this face, image side of the second lens be designed to convex etc. at circumference near zone.It is noted that, this little details under the situation of Lothrus apterus, optionally need merge in the middle of other embodiments being applied to the present invention.

The present invention according to aforementioned various optical imaging lens, can provide a kind of portable electronic devices, and it comprises a casing and an image module, and image module is installed in casing.Image module comprises according to arbitrary optical imaging lens of the present invention, a lens barrel, a module rear seat unit and an image sensor.Lens barrel arranges optical imaging lens with supply, and module rear seat unit arranges lens barrel with supply, and image sensor is positioned at the image side of optical imaging lens.

Can learn in above-mentioned, the portable electronic devices of the present invention and its optical imaging lens, through the concave-convex curved surface arrangement controlling each lens, and control correlation parameter with several relational expression, good optical property can be maintained, and effectively shorten the length of camera lens simultaneously.

Accompanying drawing explanation

Fig. 1 shows the cross-sectional view according to one of one of the present invention embodiment lens;

Fig. 2 A shows the cross-sectional view of the three-chip type lens of the optical imaging lens of the first embodiment according to the present invention;

Fig. 2 B shows the sagitta of arc direction of optical imaging lens and the astigmatic image error figure schematic diagram of meridian direction of first embodiment of foundation the present invention;

Fig. 2 C shows the distortion aberration diagram intention of the optical imaging lens of the first embodiment according to the present invention;

Fig. 3 A shows the cross-sectional view of the quadruple lenses of the optical imaging lens of the 3rd embodiment according to the present invention;

Fig. 3 B shows the sagitta of arc direction of optical imaging lens and the astigmatic image error figure schematic diagram of meridian direction of the 3rd embodiment of foundation the present invention;

Fig. 3 C shows the distortion aberration diagram intention of the optical imaging lens of the 3rd embodiment according to the present invention;

Fig. 4 shows the cross-sectional view of the quadruple lenses of the optical imaging lens of the 4th embodiment according to the present invention;

Fig. 5 shows the cross-sectional view of the quadruple lenses of the optical imaging lens of the 5th embodiment according to the present invention;

Fig. 6 A shows the cross-sectional view of the quadruple lenses of the optical imaging lens of the 6th embodiment according to the present invention;

Fig. 6 B shows the lateral light fan figure of the optical imaging lens of the 6th embodiment according to the present invention.

Fig. 7 A shows the cross-sectional view of the quadruple lenses of the optical imaging lens of the 7th embodiment according to the present invention;

Fig. 7 B shows the lateral light fan figure of the optical imaging lens of the 7th embodiment according to the present invention;

Fig. 8 A shows the cross-sectional view of the quadruple lenses of the optical imaging lens of the 8th embodiment according to the present invention;

Fig. 8 B shows the lateral light fan figure of the optical imaging lens of the 8th embodiment according to the present invention;

Fig. 8 C shows the optical delivery modulus curve map of the optical imaging lens of the 8th embodiment according to the present invention;

Fig. 9 A shows the cross-sectional view of the quadruple lenses of the optical imaging lens of the 9th embodiment according to the present invention;

Fig. 9 B shows the lateral light fan figure of the optical imaging lens of the 9th embodiment according to the present invention;

Fig. 9 C shows the change curve of optical delivery modulus in visual field of the optical imaging lens of the 9th embodiment according to the present invention;

Figure 10 A shows the cross-sectional view of the quadruple lenses of the optical imaging lens of the tenth embodiment according to the present invention;

Figure 10 B shows the lateral light fan figure of the optical imaging lens of the tenth embodiment according to the present invention;

Figure 10 C shows the change curve of optical delivery modulus in visual field of the optical imaging lens of the tenth embodiment according to the present invention;

Figure 11 A shows the cross-sectional view of the quadruple lenses of the optical imaging lens of the 11 embodiment according to the present invention;

Figure 11 B shows the lateral light fan figure of the optical imaging lens of the 11 embodiment according to the present invention;

Figure 11 C shows the change curve of optical delivery modulus in visual field of the optical imaging lens of the 11 embodiment according to the present invention;

Figure 12 A shows the cross-sectional view of the quadruple lenses of the optical imaging lens of the 12 embodiment according to the present invention;

Figure 12 B shows the sagitta of arc direction of optical imaging lens and the astigmatic image error figure schematic diagram of meridian direction of the 12 embodiment of foundation the present invention;

Figure 12 C shows the distortion aberration diagram intention of the optical imaging lens of the 12 embodiment according to the present invention;

Figure 13 A shows the cross-sectional view of the quadruple lenses of the optical imaging lens of the 13 embodiment according to the present invention;

Figure 13 B shows the sagitta of arc direction of optical imaging lens and the astigmatic image error figure schematic diagram of meridian direction of the 13 embodiment of foundation the present invention;

Figure 13 C shows the distortion aberration diagram intention of the optical imaging lens of the 13 embodiment according to the present invention;

Figure 14 shows one of the portable electronic devices of one of foundation the present invention embodiment structural representation; And

Figure 15 shows one of the portable electronic devices of another embodiment according to the present invention structural representation;

Figure 16 A shows the TV distortion aberration of the portable electronic devices of another embodiment according to the present invention;

Figure 16 B shows the rough schematic of distortion aberration effects image quality.

[symbol description]

1,2,3,4,5,6,7,8,9,10,11,12 optical imaging lens

400,500 portable electronic devices

401,501 casings

402,502 lens barrels

404,504 module rear seat unit

AS aperture

L1, L11, L21, L31, L41, L51, L61 first lens

L2, L12, L22, L32, L42, L52, L62 second lens

L3, L13, L23, L33, L43, L53, L63 the 3rd lens

L4, L14, L24, L34, L44, L54, L64 the 4th lens

R1, R3, R5, R7 thing side

Face, R2, R4, R6, R8 image side

406,506 openings

408,508 lens set

422,522 image sensors

420,520 substrates

505 depressed parts

512 light sources

514 over caps

F, 410,510 optical filtering parts

IP imaging surface

A1 thing side

A2 image side

I optical axis

I-I' axis

A, B, C, E region

Embodiment

For further illustrating each embodiment, the present invention provides graphic.This is graphic is a bit a part for disclosure of the present invention, and it is mainly that embodiment is described, 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 the advantage of other possible embodiments and 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 is sayed it " 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 (chiefray) Lc and marginal ray (marginalray) 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, embodiment is below ask the graphic extension succinctly all eliminating part.

The optical imaging lens of the present invention, it is a tight shot, and be formed by one of sequentially arranging aperture, one first lens, one second lens, one the 3rd lens and/or one the 4th lens from thing side to image side along an optical axis, each lens all there is refractive index and 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.The present invention through the detail characteristic of each lens of design, and can provide shorter optical imaging lens length and good optical property.

The material that first lens of optical imaging lens, the second lens, the 3rd lens and/or the 4th lens use can make the light wave of specific band pass through, as: the light wave that wavelength can be made to be about 850nm or more than 900nm passes through.For example, first lens, second lens, 3rd lens and/or the 4th lens can by having high-absorbility to the visible ray of wavelength between 400nm and 700nm and near infrared light wavelength being longer than to 850nm or 900nm has the material of high penetration rate to form, be preferably by having high-absorbility to the visible ray of wavelength between 400nm and 700nm and near infrared light wavelength being longer than to 940nm has the material of high penetration rate to form, current known material is as F52R, Ultem1010, UltemXH6050, the plastics such as ExtemXH1005 or ExtemUH1006 all can be used as lens body, right the present invention is not limited to this, lens body can plate at least one or multi-layer anti-reflection layer, the light wave making wavelength be about 850nm or more than 900nm passes through, and have good absorptivity to the visible ray of 400nm to 700nm, and preferably make its light Penetration ration peak value be drop on about 940nm wavelength, in another example, first lens L1, the second lens L2 and the 3rd lens L3 can make the light wave of below wavelength 900nm pass through, first lens L1, the second lens L2 and the 3rd lens L3 can have the refractive index of about 1.53, and its Abbe number is about 55.6, or there is the refractive index of about 1.63, and its Abbe number is about 23.35, but the present invention is not as limit.When all lens in optical imaging lens all use identical material to make, can manufacturing cost be reduced and simplify manufacturing course.

Optical characteristics and the lens length of optical imaging lens is mainly considered in the characteristic of aforementioned each eyeglass of this design, for example: in order to shorten lens length, lens thickness and/or air gap width can be controlled in certain limit, but all lens thickness summations will be controlled and maintain good optical characteristic to be simultaneously difficult, therefore the first lens are arranged at this design aperture, be incorporated on the first face, lens image side circumference near zone be convex, be recessed feature at circumference near zone on the second lens thing side, the curvature of field and distortion aberration can be eliminated; In conjunction with being formed at the 4th lens thing side being convex and circumference near zone is recessed feature at optical axis near zone, effectively can revising aberration, this little feature being arranged in pairs or groups each other and can shorten lens length and guarantee image quality simultaneously.

Secondly, through the numerical value controlling each parameter, deviser can be assisted to design possess favorable optical performance, entire length effectively to shorten and technically feasible optical imaging lens, the range of control of this little parameter please refer to following table:

Because the unpredictability of Optical System Design, under framework of the present invention, when meeting above-mentioned relational expression, preferably can make that lens length of the present invention shortens, available aperture increases (namely f-number reduces), field angle increases, image quality promotes or assemble Yield lmproved and improve the shortcoming of prior art.

When implementing of the present invention, except above-mentioned relation formula, also can go out the thin portion structures such as the concave-convex curved surface arrangement of other more lens for multiple lens additional designs, to strengthen the control to system performance and/or resolution for single lens or popularity.For example, can this face, image side of the second lens be designed to convex etc. at circumference near zone.It is noted that, this little details under the situation of Lothrus apterus, optionally need merge in the middle of other embodiments being applied to the present invention, is not limited to this.

In order to illustrate that the present invention while providing good optical property, can shorten lens length, below provide multiple embodiment and its detailed optical data really.First please also refer to Fig. 2 A to Fig. 2 C, wherein Fig. 2 A shows the cross-sectional view of the three-chip type lens of the optical imaging lens of the first embodiment according to the present invention, Fig. 2 B shows the sagitta of arc direction of optical imaging lens and the astigmatic image error figure schematic diagram of meridian direction of first embodiment of foundation the present invention, and Fig. 2 C shows the distortion aberration diagram intention of the optical imaging lens of the first embodiment according to the present invention.

As shown in Figure 2 A, the optical imaging lens 1 of the present embodiment sequentially comprises an aperture (aperturestop) AS, one first lens L1, one second lens L2 and the 3rd lens L3 from thing side A1 to image side A2, and an optical axis is by aperture AS central point.One imaging surface IP of one optical filtering part F and an image sensor is all arranged at the image side A2 of optical imaging lens 1.Light through optical imaging lens 1 is filtered out the wavelength of specific band by optical filtering part F, such as filter out visible light wave range or the wavelength wave band being about below 700nm etc., can suppress the interference of other light sources, the ripple of the infrared ray wave band that lifting human eye be can't see is longer than the imaging effect on imaging surface IP.In the present embodiment, optical filtering part F to be located between the 3rd lens L3 and imaging surface IP and to be visible filter (visiblelightfilter).Although the optical filtering part F of display is herein single component, but in other embodiments, also optical filtering part can be arranged on elsewhere or multiple optical filtering part is set.

In the present embodiment, the each lens L1 of system's design, L2, all clearance is there is between the imaging surface IP of L3 optical filtering part F and image sensor, as: there is a clearance AC12 between the first lens L1 and the second lens L2, a clearance AC23 is there is between second lens L2 and the 3rd lens L3, a clearance (not shown) is there is between the imaging surface IP that there is a clearance (not shown) and optical filtering part F and image sensor between 3rd lens L3 and optical filtering part F, but in other embodiments, also aforementioned wherein arbitrary clearance can not be had, as: be corresponding each other by the surface profile design of two relative lens, and can fit each other, to eliminate clearance therebetween.

In the present embodiment, the first lens L1, the second lens L2 of optical imaging lens 1 and the 3rd lens L3 are made up of F52R plastic material, it can plate the anti-reflecting layer near infrared ray.Secondly, first lens L1, the second lens L2 of optical imaging lens 1 and the 3rd lens L3 are all exemplarily be axis of symmetry with optical axis at this, and it is as follows to form thin portion structure: the first lens L1 has positive refractive index, and have one towards the thing side R1 and of thing side A1 towards face, the image side R2 of image side A2.Thing side R1 is a convex surface, and face, image side R2 is a convex surface, and it is convex at optical axis near zone, and is convex at circumference near zone.Second lens L2 has negative refractive index, and has one towards the thing side R3 and of thing side A1 towards face, the image side R4 of image side A2.Thing side R3 is a concave surface, and it is recessed at optical axis near zone, and is recessed at circumference near zone.Face, image side R4 is a convex surface, and it is convex at optical axis near zone, and is convex at circumference near zone.3rd lens L3 has positive refractive index, and has one towards the thing side R5 and of thing side A1 towards face, the image side R6 of image side A2.Thing side R5 is convex at optical axis near zone, and is recessed at circumference near zone; Face, image side R6 is recessed at optical axis near zone, and is convex at circumference near zone.

Following table 1A display is according to the detailed optical data of each eyeglass of the optical imaging lens 1 of first embodiment of the present invention.

Table 1A

In the present embodiment, EFL is 2.5615mm, half angle of view (halffieldofview, HFOV) is 36.1 degree, and f-number (fnumber) is 2.22, image height is 1.87mm, BFL is 0.955mm, and be 3.166mm from the length of the first lens thing side R1 to imaging surface IP on optical axis, angular magnification (angularmagnification) is 1.303, aperture AS diameter is 1.14mm, and optical filtering part F diameter is 3.374mm.

The thing side R5 of the thing side R3 of the thing side R1 of the first lens L1 and face, image side R2, the second lens L2 and face, image side R4, the 3rd lens L3 and face, image side R6, amounting to six aspheric surfaces is all according to following aspheric curve formula definition:

$Z\left(Y\right)=\frac{Y^2}{R}/(1+\sqrt{1-(1+K)\frac{Y^2}{R^2}})+\underset{i=1}{\overset{n}{\&Sigma;}}{a}_i\&times;Y^i$

Y represents the vertical range of point on non-spherical surface and optical axis; Z represents the degree of depth (in aspheric surface, distance optical axis is the point of Y, its be tangential on the tangent plane on summit on aspheric surface optical axis, vertical range between the two) of aspheric surface; R represents the radius-of-curvature of lens surface; K is conical surface coefficient (ConicConstant); a _iit is the i-th rank asphericity coefficient.The parameter detailed data of each aspheric surface is please also refer to table 1B.

Table 1B

Fig. 2 B illustrates the schematic diagram of the astigmatic image error of sagitta of arc direction (indicating S) that the present embodiment shows under the light wave of wavelength 940nm and meridian direction (indicating T), and Fig. 2 C illustrates the schematic diagram of the distortion aberration of the present embodiment.The focal length variations amount of astigmatic image error in whole field range of the sagitta of arc and meridian direction drop on ± 0.10mm in, and the aberration that distorts be maintained at ± 2.0% in.

Table 2A display, according to the detailed optical data of the three-chip type lens of the optical imaging lens of second embodiment of the present invention, is be made up of SP3810 polycarbonate plastic at all lens of this example.

Table 2A

In the present embodiment, EFL is 2.5631mm, half angle of view is 36.1 degree, f-number is 2.19, and image height is 1.87mm, BFL is 0.87mm, be 3.081mm from the length of the first lens thing side R1 to imaging surface IP on optical axis, angular magnification is 1.317, and aperture AS diameter is 1.16mm, and optical filtering part F diameter is 3.375mm.

The parameter detailed data of the aspheric surfaces such as the thing side R5 of the thing side R3 of the thing side R1 of the first lens L1 and face, image side R2, the second lens L2 and face, image side R4, the 3rd lens L3 and face, image side R6 please refer to table 2B.

Table 2B

With reference to figure 3A, its display is according to the cross-sectional view of the quadruple lenses of the optical imaging lens 2 of the 3rd embodiment of the present invention, and the optical imaging lens 2 of the present embodiment sequentially comprises an aperture AS, one first lens L1, one second lens L2, one the 3rd lens L3 and the 4th lens L4 from thing side A1 to image side A2.In the present embodiment, optical filtering part F to be located between the 4th lens L4 and imaging surface IP and to be visible filter, and its effect please refer to the first embodiment with explanation, does not repeat them here.

First lens L1, the second lens L2 of optical imaging lens 2, the 3rd lens L3 and the 4th lens L4 at this exemplarily with identical material, as: plastics form, to reduce manufacturing cost and to simplify manufacturing course, and the light wave that wavelength can be made to be about more than 900nm passes through.

Secondly, first lens L1, the second lens L2 of optical imaging lens 2, the 3rd lens L3 and the 4th lens L4 are all exemplarily be axis of symmetry with optical axis at this, and it is as follows to form thin portion structure: the first lens L1 has positive refractive index, its thing side R1 is a convex surface, its face, image side R2 is recessed at optical axis near zone, and is convex at circumference near zone.Second lens L2 has negative refractive index, and its thing side R3 is recessed at optical axis near zone, and is recessed at circumference near zone, and its face, image side R4 is recessed at optical axis near zone, and is recessed at circumference near zone.3rd lens L3 has positive refractive index, and its thing side R5 is recessed at optical axis near zone, and is recessed at circumference near zone, and its face, image side R6 is convex at optical axis near zone, and is convex at circumference near zone.4th lens L4 has negative refractive index, and its thing side R7 is convex at optical axis near zone, and is convex at circumference near zone, and its face, image side R8 is recessed at optical axis near zone, and is convex at circumference near zone.

Following table 3A display is according to the detailed optical data of each eyeglass of the optical imaging lens 2 of the 3rd embodiment of the present invention.

Table 3A

In the present embodiment, EFL is 2.4818mm, half angle of view is 37.08 degree, f-number is 2.199, and image height is 1.876mm, BFL is 1.025mm, be 3.075mm from the length of the first lens thing side R1 to imaging surface IP on optical axis, angular magnification is 1.151, and aperture AS diameter is 1.12mm, and optical filtering part F diameter is 3.361mm.

The parameter detailed data of the aspheric surfaces such as the thing side R5 of the thing side R3 of the thing side R1 of the first lens L1 and face, image side R2, the second lens L2 and face, image side R4, the 3rd lens L3 and the thing side R7 of face, image side R6 and the 4th lens L4 and face, image side R8 please refer to table 3B.

Table 3B

Fig. 3 B illustrates the schematic diagram of the astigmatic image error of sagitta of arc direction (indicating S) that the present embodiment shows under the light wave of wavelength 940nm and meridian direction (indicating T), and Fig. 3 C illustrates the schematic diagram of the distortion aberration of the present embodiment.The focal length variations amount of astigmatic image error in whole field range of the sagitta of arc and meridian direction drop on ± 0.06mm in, and the aberration that distorts be maintained at ± 2.0% in.

Please refer to Fig. 4, its display is according to the cross-sectional view of the quadruple lenses of the optical imaging lens 3 of the 4th embodiment of the present invention.The optical imaging lens 3 of the present embodiment sequentially comprises one first lens L1, an aperture AS, one second lens L2, one the 3rd lens L3 and the 4th lens L4 from thing side A1 to image side A2.

First lens L1, the second lens L2 of optical imaging lens 3, the 3rd lens L3 and the 4th lens L4 are all exemplarily be axis of symmetry with optical axis at this, and it is as follows to form thin portion structure: the first lens L1 has positive refractive index, its thing side R1 is a plane, its face, image side R2 is convex at optical axis near zone, and is convex at circumference near zone.Second lens L2 has negative refractive index, and its thing side R3 is convex at optical axis near zone, and is convex at circumference near zone, and its face, image side R4 is recessed at optical axis near zone, and is recessed at circumference near zone.3rd lens L3 has negative refractive index, and its thing side R5 is recessed at optical axis near zone, and is recessed at circumference near zone, and its face, image side R6 is convex at optical axis near zone, and is convex at circumference near zone.4th lens L4 has positive refractive index, and its thing side R7 is convex at optical axis near zone, and is convex at circumference near zone, and its face, image side R8 is convex at optical axis near zone, and is convex at circumference near zone.

Following table 4A display is according to the detailed optical data of each eyeglass of the optical imaging lens 3 of the 4th embodiment of the present invention.

Table 4A

In the present embodiment, EFL is 1.0588mm, half angle of view is 18.11 degree, f-number is 2.07, and image height is 0.346mm, BFL is 0.398mm, be 2.116mm from the length of the first lens thing side R1 to imaging surface IP on optical axis, angular magnification is 0.0622, and aperture AS diameter is 0.498mm, and its thickness is 0.02mm.In the present embodiment, the refractive index of the first lens L1, the second lens L2, the 3rd lens L3 and the 4th lens L4 is exemplarily 1.6397, and its key light line angle is also less than 1 degree in whole visual field.It should be noted that in the present embodiment, AC12 is about 0.02mm, AC23 is about 0.196mm, and AC34 is about 0.05mm.

The thing side R1 of the first lens L1 is plane, its radius matter and other as: the parameter detailed data of the aspheric surfaces such as face, the image side R2 of the first lens L1, the thing side R3 of the second lens L2 and face, image side R4, the thing side R5 of the 3rd lens L3 and the thing side R7 of face, image side R6 and the 4th lens L4 and face, image side R8 please refer to shows 4B.Note that all a ₈the parameter value of above progression is all zero, and the K value of all lens surfaces is all zero.

Table 4B

Please refer to Fig. 5, its display is according to the cross-sectional view of the quadruple lenses of the optical imaging lens 4 of the 5th embodiment of the present invention.The optical imaging lens 4 of the present embodiment sequentially comprises an aperture AS, one first lens L1, one second lens L2, one the 3rd lens L3 and the 4th lens L4 from thing side A1 to image side A2.

First lens L1, the second lens L2 of optical imaging lens 4, the 3rd lens L3 and the 4th lens L4 are all exemplarily be axis of symmetry with optical axis at this, and it is as follows to form thin portion structure: the first lens L1 has positive refractive index, its thing side R1 is convex at optical axis near zone, and be convex at circumference near zone, its face, image side R2 is convex at optical axis near zone, and is convex at circumference near zone.Second lens L2 has negative refractive index, and its thing side R3 is convex at optical axis near zone, and is convex at circumference near zone, and its face, image side R4 is recessed at optical axis near zone, and is recessed at circumference near zone.3rd lens L3 has negative refractive index, and its thing side R5 is recessed at optical axis near zone, and is recessed at circumference near zone, and its face, image side R6 is recessed at optical axis near zone, and is recessed at circumference near zone.4th lens L4 has positive refractive index, and its thing side R7 is convex at optical axis near zone, and is convex at circumference near zone, and its face, image side R8 is convex at optical axis near zone, and is convex at circumference near zone.

Following table 5A display is according to the detailed optical data of each eyeglass of the optical imaging lens 4 of the 5th embodiment of the present invention.

Table 5A

In the present embodiment, EFL is 3.614mm, half angle of view is 4.896 degree, f-number is 2.3, and image height is 0.3096mm, BFL is 0.1mm, be 2.678mm from the length of the first lens thing side R1 to imaging surface IP on optical axis, angular magnification is-0.3587, and aperture AS diameter is 1.57mm, and its thickness is 0.35mm.In the present embodiment, the refractive index of the first lens L1, the second lens L2, the 3rd lens L3 and the 4th lens L4 is exemplarily 1.6397.It should be noted that in the present embodiment, AC12 is about 0.04mm, AC23 is about 0.80mm, and AC34 is about 0.18mm.

The thing side R1 of the first lens L1 is plane, its radius value and other as: the parameter detailed data of the aspheric surfaces such as face, the image side R2 of the first lens L1, the thing side R3 of the second lens L2 and face, image side R4, the thing side R5 of the 3rd lens L3 and the thing side R7 of face, image side R6 and the 4th lens L4 and face, image side R8 please refer to shows 5B.Note that all a ₁₀the parameter value of above progression is all zero.

Table 5B

Please refer to Fig. 6 A, its display is according to the cross-sectional view of the quadruple lenses of the optical imaging lens 5 of the 6th embodiment of the present invention.The optical imaging lens 5 of the present embodiment sequentially comprises one first lens L11, an aperture AS, one second lens L12, one the 3rd lens L13 and the 4th lens L14 from thing side A1 to image side A2.In the present embodiment, aperture AS is arranged between the first lens L11 and the second lens L12, and optical axis is by aperture AS central point.In the present embodiment, optical filtering part F is located between the 4th lens L14 and imaging surface IP, and can be the visible filter that glass makes, and its effect please refer to the first embodiment with explanation, does not repeat them here.

First lens L11, the second lens L12 of optical imaging lens 5, the 3rd lens L13 and the 4th lens L14 are all exemplarily be axis of symmetry with optical axis at this, and it is as follows to form thin portion structure: the first lens L11 has positive refractive index, its thing side R1 is convex at optical axis near zone, and be convex at circumference near zone, its face, image side R2 is recessed at optical axis near zone.Second lens L12 has negative refractive index, and its thing side R3 is convex at optical axis near zone, and is convex at circumference near zone, and its face, image side R4 is recessed at optical axis near zone, and is recessed at circumference near zone.3rd lens L13 has negative refractive index, and its thing side R5 is recessed at optical axis near zone, and is recessed at circumference near zone, and its face, image side R6 is recessed at optical axis near zone, and is recessed at circumference near zone.4th lens L14 has positive refractive index, and its thing side R7 is recessed at optical axis near zone, and is recessed at circumference near zone, and its face, image side R8 is convex at optical axis near zone, and is convex at circumference near zone.

Following table 6A display is according to the detailed optical data of each eyeglass of the optical imaging lens 5 of the 6th embodiment of the present invention, and it is noted that, AC1S herein refers to the distance of the first lens L11 image side face R2 to aperture AS on optical axis.

Table 6A

In the present embodiment, EFL is 3.7999mm, and half angle of view is 5.387 degree, f-number is 2.3, and image height is 0.358mm, BFL is 0.5mm, be 2.701mm from the length of the first lens thing side R1 to imaging surface IP on optical axis, angular magnification is 1.422, and aperture AS diameter is 1.05mm.In the present embodiment, the refractive index of the first lens L11, the second lens L12, the 3rd lens L13 and the 4th lens L14 is exemplarily 1.6397, and looking in the distance than (telephotoratio) is 0.71058.It should be noted that in the present embodiment, AC12 is about 0.1mm, AC23 is about 0.274mm, and AC34 is about 0.237mm, and optical filtering part F is arranged on distance the 4th lens L14 image side and is about 0.1mm place, and with imaging surface IP apart from about 0.1mm, preferably making AAG be 0.611mm, AAG/T3 is 2.174.

The parameter detailed data of the aspheric surfaces such as the thing side R5 of the thing side R3 of the thing side R1 of the first lens L11 and face, image side R2, the second lens L12 and face, image side R4, the 3rd lens L13 and the thing side R7 of face, image side R6 and the 4th lens L14 and face, image side R8 please refer to table 6B.Note that all a ₁₀the parameter value of above progression is all zero.

Table 6B

Fig. 6 B shows lateral light fan figure (transverserayfanplot) of the optical imaging lens 5 of the 6th embodiment according to the present invention.

Please refer to Fig. 7 A, its display is according to the cross-sectional view of the quadruple lenses of the optical imaging lens of the 7th embodiment of the present invention.The optical imaging lens 6 of the present embodiment sequentially comprises one first lens L11, an aperture AS, one second lens L12, one the 3rd lens L13 and the 4th lens L24 from thing side A1 to image side A2.In the present embodiment, aperture AS is arranged between the first lens L11 and the second lens L12, and optical axis is by aperture AS central point.In the present embodiment, optical filtering part F is located between the 4th lens L24 and imaging surface IP, and can be the visible filter that glass makes, and its effect please refer to the first embodiment with explanation, does not repeat them here.

First lens L11, the second lens L12 of optical imaging lens 6, the 3rd lens L13 and the 4th lens L24 are all exemplarily be axis of symmetry with optical axis at this, and it is as follows to form thin portion structure: the first lens L11 has positive refractive index, its thing side R1 is a convex surface, its face, image side R2 is recessed at optical axis near zone, and is recessed at circumference near zone.Second lens L12 has negative refractive index, and its thing side R3 is convex at optical axis near zone, and its face, image side R4 is recessed at optical axis near zone.3rd lens L13 has negative refractive index, and its thing side R5 is recessed at optical axis near zone, and its face, image side R6 is recessed at optical axis near zone.4th lens L24 has positive refractive index, and its thing side R7 is recessed at optical axis near zone, and its face, image side R8 is convex at optical axis near zone, and is convex at circumference near zone.

Following table 7A display is according to the detailed optical data of each eyeglass of the optical imaging lens 6 of the 7th embodiment of the present invention, and it is noted that, AC1S herein refers to the distance of the first lens L11 image side face R2 to aperture AS on optical axis.

Table 7A

In the present embodiment, EFL is 3.798mm, half angle of view is 5.469 degree, and f-number is 2.2, and image height is 0.3636mm, BFL is 0.51mm, be 2.7018mm from the length of the first lens thing side R1 to imaging surface IP on optical axis, look in the distance than being 0.71147, angular magnification is 1.5316, aperture AS diameter is 1.38mm, and optical filtering part F diameter is 0.75mm.

The parameter detailed data of the aspheric surfaces such as the thing side R5 of the thing side R3 of the thing side R1 of the first lens L11 and face, image side R2, the second lens L12 and face, image side R4, the 3rd lens L13 and the thing side R7 of face, image side R6 and the 4th lens L24 and face, image side R8 please refer to table 7B.Note that all a ₁₀the parameter value of above progression is all zero.

Table 7B

Fig. 7 B shows the lateral light fan figure of the optical imaging lens 6 of the 7th embodiment according to the present invention.

With reference to figure 8A, its display is according to the cross-sectional view of the quadruple lenses of the optical imaging lens 7 of the 8th embodiment of the present invention.The optical imaging lens 7 of the present embodiment sequentially comprises an aperture AS, one first lens L31, one second lens L32, one the 3rd lens L33 and the 4th lens L34 from thing side A1 to image side A2.In the present embodiment, optical axis is by aperture AS central point, and optical filtering part F is located between the 4th lens L34 and imaging surface IP, and can be the visible filter that glass makes, and its effect please refer to the first embodiment with explanation, does not repeat them here.

First lens L31, the second lens L32 of optical imaging lens 7, the 3rd lens L33 and the 4th lens L34 are all exemplarily be axis of symmetry with optical axis at this, and it is as follows to form thin portion structure: the first lens L31 has positive refractive index, its thing side R1 is convex at optical axis near zone, and be convex at circumference near zone, its face, image side R2 is convex at optical axis near zone.Second lens L32 has negative refractive index, and its thing side R3 is convex at optical axis near zone, and its face, image side R4 is recessed at optical axis near zone.3rd lens L33 has negative refractive index, and its thing side R5 is convex at optical axis near zone, and its face, image side R6 is recessed at optical axis near zone.4th lens L34 has negative refractive index, and its thing side R7 is recessed at optical axis near zone, and its face, image side R8 is recessed at optical axis near zone.

Following table 8A display is according to the detailed optical data of each eyeglass of the optical imaging lens 7 of the 8th embodiment of the present invention.

Table 8A

In the present embodiment, EFL is 3.9999mm, and half angle of view is 5.3 degree, and f-number is 2.4, image height is 0.3715mm, be 2.703mm from the length of the first lens thing side R1 to imaging surface IP on optical axis, look in the distance than being 0.675, angular magnification is 3.0447, aperture AS diameter is 1.666mm, optical filtering part F diameter is 0.678mm, AAG is that 0.71, AAG/T3 is greater than 2.0.

The parameter detailed data of the aspheric surfaces such as the thing side R5 of the thing side R3 of the thing side R1 of the first lens L31 and face, image side R2, the second lens L32 and face, image side R4, the 3rd lens L33 and the thing side R7 of face, image side R6 and the 4th lens L34 and face, image side R8 please refer to table 8B.Note that all a ₈the parameter value of above progression is all zero.

Table 8B

Fig. 8 B shows the lateral light fan figure of the optical imaging lens of the 8th embodiment according to the present invention, and Fig. 8 C shows optical delivery modulus (modulusoftheopticaltransferfunction) change curve in visual field of the optical imaging lens of the 8th embodiment according to the present invention.

With reference to figure 9A, its display is according to the cross-sectional view of the quadruple lenses of the optical imaging lens 8 of the 9th embodiment of the present invention.The optical imaging lens 8 of the present embodiment sequentially comprises an aperture AS, one first lens L41, one second lens L42, one the 3rd lens L43 and the 4th lens L44 from thing side A1 to image side A2.In the present embodiment, optical axis is by aperture AS central point, optical filtering part F is located between the 4th lens L44 and imaging surface IP, and can be the visible filter that glass makes, its effect and similar first embodiment of explanation, only the optical filtering part F of the present embodiment allows visible ray pass through, and the light of all the other wave bands of elimination, other do not repeat them here.

First lens L41, the second lens L42 of optical imaging lens 8, the 3rd lens L43 and the 4th lens L44 are all exemplarily be axis of symmetry with optical axis at this, and it is as follows to form thin portion structure: the first lens L41 has positive refractive index, its thing side R1 is convex at optical axis near zone, and be convex at circumference near zone, its face, image side R2 is convex at optical axis near zone.Second lens L42 has negative refractive index, and its face, image side R4 is recessed at optical axis near zone.3rd lens L43 has negative refractive index, and its thing side R5 is convex at optical axis near zone, and its face, image side R6 is recessed at optical axis near zone.4th lens L44 has negative refractive index, and its thing side R7 is recessed at optical axis near zone, and its face, image side R8 is convex at optical axis near zone.

Following table 9A display is according to the detailed optical data of each eyeglass of the optical imaging lens 8 of the 9th embodiment of the present invention.

Table 9A

In the present embodiment, EFL is 3.9999mm, and half angle of view is 7 degree, f-number is 2.80, image height is 0.4916mm, is 3.0414mm from the length of the first lens thing side R1 to imaging surface IP on optical axis, looks in the distance than being 0.75, angular magnification is 2.4854, aperture AS diameter is 1.666mm, and optical filtering part F diameter is 0.892mm, AAG is 1.061, AAG/T3 is greater than 4, AC23/T3 and is greater than 2.

The parameter detailed data of the aspheric surfaces such as the thing side R5 of the thing side R3 of the thing side R1 of the first lens L41 and face, image side R2, the second lens L42 and face, image side R4, the 3rd lens L43 and the thing side R7 of face, image side R6 and the 4th lens L44 and face, image side R8 please refer to table 9B.Note that all a ₈the parameter value of above progression is all zero.

Table 9B

Fig. 9 B shows the lateral light fan figure of the optical imaging lens of the 9th embodiment according to the present invention, and Fig. 9 C shows the change curve of optical delivery modulus in visual field of the optical imaging lens of the 9th embodiment according to the present invention.

With reference to figure 10A, its display is according to the cross-sectional view of the quadruple lenses of the optical imaging lens 9 of the tenth embodiment of the present invention.The optical imaging lens 9 of the present embodiment sequentially comprises an aperture AS, one first lens L51, one second lens L52, one the 3rd lens L53 and the 4th lens L54 from thing side A1 to image side A2.In the present embodiment, optical axis is by aperture AS central point, optical filtering part F is located between the 4th lens L54 and imaging surface IP, and can be the visible filter that glass makes, its effect and similar first embodiment of explanation, only the optical filtering part F of the present embodiment allows visible ray pass through, and the light of all the other wave bands of elimination, other do not repeat them here.

First lens L51, the second lens L52 of optical imaging lens 9, the 3rd lens L53 and the 4th lens L54 are all exemplarily be axis of symmetry with optical axis at this, and it is as follows to form thin portion structure: the first lens L51 has positive refractive index, its thing side R1 is convex at optical axis near zone, and be convex at circumference near zone, its face, image side R2 is convex at optical axis near zone.Second lens L52 has negative refractive index, and its thing side R3 is convex at optical axis near zone, and its face, image side R4 is recessed at optical axis near zone.3rd lens L53 has negative refractive index, and its thing side R5 is convex at optical axis near zone, and its face, image side R6 is recessed at optical axis near zone.4th lens L54 has negative refractive index, and its thing side R7 is recessed at optical axis near zone, and its face, image side R8 is convex at optical axis near zone.

Following table 10A display is according to the detailed optical data of each eyeglass of the optical imaging lens 9 of the tenth embodiment of the present invention.

Table 10A

In the present embodiment, EFL is 3.9999mm, and half angle of view is 7 degree, f-number is 2.802, image height is 0.4916mm, is 3.0414mm from the length of the first lens thing side R1 to imaging surface IP on optical axis, looks in the distance than being 0.75, angular magnification is 2.4597, aperture AS diameter is 1.428mm, and optical filtering part F diameter is 0.916mm, AAG is 1.064, AAG/T3 is greater than 4, AC23/T3 and is greater than 2.

The parameter detailed data of the aspheric surfaces such as the thing side R5 of the thing side R3 of the thing side R1 of the first lens L51 and face, image side R2, the second lens L52 and face, image side R4, the 3rd lens L53 and the thing side R7 of face, image side R6 and the 4th lens L54 and face, image side R8 please refer to table 10B.Note that all a ₈the parameter value of above progression is all zero.

Table 10B

Figure 10 B shows the lateral light fan figure of the optical imaging lens of the tenth embodiment according to the present invention, and Figure 10 C shows the change curve of optical delivery modulus in visual field of the optical imaging lens of the tenth embodiment according to the present invention.

With reference to figure 11A, its display is according to the cross-sectional view of the quadruple lenses of the optical imaging lens 10 of the 11 embodiment of the present invention.The optical imaging lens 10 of the present embodiment sequentially comprises an aperture AS, one first lens L61, one second lens L62, one the 3rd lens L63 and the 4th lens L64 from thing side A1 to image side A2.In the present embodiment, optical axis is by aperture AS central point, optical filtering part F is located between the 4th lens L64 and imaging surface IP, and can be the visible filter that glass makes, its effect and similar first embodiment of explanation, only the optical filtering part F of the present embodiment allows the visible ray as 400nm to 700nm pass through, and the light of all the other wave bands of elimination, other do not repeat them here.

First lens L61 of optical imaging lens 10, the second lens 6, the 3rd lens L63 and the 4th lens L64 are all exemplarily be axis of symmetry with optical axis at this, and it is as follows to form thin portion structure: the first lens L61 has positive refractive index, its thing side R1 is convex at optical axis near zone, and be convex at circumference near zone, its face, image side R2 is convex at optical axis near zone.Second lens L62 has negative refractive index, and its face, image side R4 is recessed at optical axis near zone.3rd lens L63 has negative refractive index, and its thing side R5 is convex at optical axis near zone, and its face, image side R6 is recessed at optical axis near zone.4th lens L64 has negative refractive index, and its thing side R7 is recessed at optical axis near zone, and its face, image side R8 is convex at optical axis near zone.

Following table 11A display is according to the detailed optical data of each eyeglass of the optical imaging lens 10 of the 11 embodiment of the present invention.

Table 11A

In the present embodiment, EFL is 3.9999mm, and half angle of view is 7 degree, f-number is 2.802, image height is 0.4916mm, is 3.00mm from the length of the first lens thing side R1 to imaging surface IP on optical axis, looks in the distance than being 0.75, angular magnification is 2.4877, aperture AS diameter is 1.428mm, and optical filtering part F diameter is 0.894mm, AAG is 1.062, AAG/T3 is greater than 4, AC23/T3 and is greater than 2.

The parameter detailed data of the aspheric surfaces such as the thing side R5 of the thing side R3 of the thing side R1 of the first lens L61 and face, image side R2, the second lens L62 and face, image side R4, the 3rd lens L63 and the thing side R7 of face, image side R6 and the 4th lens L64 and face, image side R8 please refer to table 11B.Note that all a ₈the parameter value of above progression is all zero.

Table 11B

Figure 11 B shows the lateral light fan figure of the optical imaging lens of the 11 embodiment according to the present invention, and Figure 11 C shows the change curve of optical delivery modulus in visual field of the optical imaging lens of the 11 embodiment according to the present invention.

With reference to figure 12A, its display is according to the cross-sectional view of the quadruple lenses of the optical imaging lens 11 of the 12 embodiment of the present invention.The optical imaging lens 11 of the present embodiment sequentially comprises an aperture AS, one first lens L11, one second lens L12, one the 3rd lens L13 and the 4th lens 14 from thing side A1 to image side A2.In the present embodiment, optical axis is by aperture AS central point, and optical filtering part F is located between the 4th lens L14 and imaging surface IP, and can be the visible filter that glass makes, and its effect please refer to the first embodiment with explanation, does not repeat them here.

First lens L11, the second lens L12 of optical imaging lens 11, the 3rd lens L13 and the 4th lens L14 are all exemplarily be axis of symmetry with optical axis at this, and it is as follows to form thin portion structure: the first lens L11 has positive refractive index, its thing side R1 is convex at optical axis near zone, and be convex at circumference near zone, its face, image side R2 is recessed at optical axis near zone, and is convex at circumference near zone.Second lens L12 has negative refractive index, and its thing side R3 is recessed at optical axis near zone, and is recessed at circumference near zone, and its face, image side R4 is convex at optical axis near zone, and is convex at circumference near zone.3rd lens L13 has positive refractive index, and its thing side R5 is recessed at optical axis near zone, and is recessed at circumference near zone, and its face, image side R6 is convex at optical axis near zone, and is convex at circumference near zone.4th lens L14 has negative refractive index, and its thing side R7 is convex at optical axis near zone, and is recessed at circumference near zone, and its face, image side R8 is recessed at optical axis near zone, and is convex at circumference near zone.

Following table 12A display is according to the detailed optical data of each eyeglass of the optical imaging lens 11 of the 12 embodiment of the present invention.

Table 12A

	Radius (mm)	Thickness (mm)	Refractive index	Abbe number	Focal length
						AS	∞	TA＝-0.091
L31	1.607	T1＝0.550	1.54	v1＝49.9	3.144
							30.068	AC12＝0.186
L32	-12.787	T2＝0.300	1.63	v2＝23.3	-34.242
							-33.168	AC23＝0.345
L33	-1.002	T3＝0.453	1.63	v3＝23.3	2.093
							-0.658	AC34＝0.080
L34	1.844	T4＝0.462	1.54	v4＝49.9	-2.572
							0.720	AC4F＝0.501
F	∞	TF＝0.500
							∞	ACFP＝0.298
IP	∞

In the present embodiment, EFL is 2.5mm, and half angle of view is 39.5 degree, and f-number is 2.0, and image height is 0.3715mm, BFL is 0.973mm, is 3.675mm from the length of the first lens thing side R1 to imaging surface IP on optical axis.

The parameter detailed data of the aspheric surfaces such as the thing side R5 of the thing side R3 of the thing side R1 of the first lens L11 and face, image side R2, the second lens L12 and face, image side R4, the 3rd lens L13 and the thing side R7 of face, image side R6 and the 4th lens L14 and face, image side R8 please refer to table 12B.Note that all a ₁₆the parameter value of above progression is all zero.

Table 12B

Figure 12 B shows the sagitta of arc direction (sagittal) of optical imaging lens and the astigmatic image error figure schematic diagram of meridian direction (tangental) of the 12 embodiment of foundation the present invention, and Figure 12 C shows the distortion aberration diagram intention of the optical imaging lens of the 12 embodiment according to the present invention.

With reference to figure 13A, its display is according to the cross-sectional view of the quadruple lenses of the optical imaging lens 12 of the 13 embodiment of the present invention.The optical imaging lens 12 of the present embodiment sequentially comprises an aperture AS, one first lens L21, one second lens L22, one the 3rd lens L23 and the 4th lens L24 from thing side A1 to image side A2.In the present embodiment, optical axis is by aperture AS central point, and optical filtering part F is located between the 4th lens L24 and imaging surface IP, and can be the visible filter that glass makes, and its effect please refer to the first embodiment with explanation, does not repeat them here.

First lens L21, the second lens L22 of optical imaging lens 12, the 3rd lens L23 and the 4th lens L24 are all exemplarily be axis of symmetry with optical axis at this, and it is as follows to form thin portion structure: the first lens L21 has positive refractive index, its thing side R1 is convex at optical axis near zone, and be convex at circumference near zone, its face, image side R2 is recessed at optical axis near zone, and is convex at circumference near zone.Second lens L22 has positive refractive index, and its thing side R3 is convex at optical axis near zone, and is recessed at circumference near zone, and its face, image side R4 is recessed at optical axis near zone, and is convex at circumference near zone.3rd lens L23 has positive refractive index, and its thing side R5 is recessed at optical axis near zone, and is recessed at circumference near zone, and its face, image side R6 is convex at optical axis near zone, and is recessed at circumference near zone.4th lens L24 has negative refractive index, and its thing side R7 is convex at optical axis near zone, and is recessed at circumference near zone, and its face, image side R8 is recessed at optical axis near zone, and is convex at circumference near zone.

Following table 13A display is according to the detailed optical data of each eyeglass of the optical imaging lens 12 of the 13 embodiment of the present invention.

Table 13A

	Radius (mm)	Thickness (mm)	Refractive index	Abbe number	Focal length
						AS	infinity	-0.071
L31	1.830	T1＝0.550	1.54	v1＝49.9	3.656
							24.489	G12＝0.146
L32	6.577	T2＝0.300	1.63	v2＝23.3	25.663
							11.131	G23＝0.319
L33	-1.032	T3＝0.561	1.63	v3＝23.3	2.069
							-0.685	G34＝0.080
L34	1.603	T4＝0.407	1.54	v4＝49.9	-2.586
							0.678	G4F＝0.595
F	infinity	TF＝0.500
							infinity	GFP＝0.298
IP	infinity

In the present embodiment, EFL is 2.51mm, and half angle of view is 39.5 degree, and f-number is 2.0, BFL is 1.067mm, is 3.756mm from the length of the first lens thing side R1 to imaging surface IP on optical axis.

The parameter detailed data of the aspheric surfaces such as the thing side R5 of the thing side R3 of the thing side R1 of the first lens L21 and face, image side R2, the second lens L22 and face, image side R4, the 3rd lens L23 and the thing side R7 of face, image side R6 and the 4th lens L24 and face, image side R8 please refer to table 13B.Note that all a ₁₆the parameter value of above progression is all zero.

Table 13B

Figure 13 B shows the sagitta of arc direction (sagittal) of optical imaging lens and the astigmatic image error figure schematic diagram of meridian direction (tangental) of the 13 embodiment of foundation the present invention, and Figure 13 C shows the distortion aberration diagram intention of the optical imaging lens of the 13 embodiment according to the present invention.

Following table 14 system lists the parameter value of above 13 embodiments.

Table 14

Referring to Figure 14, is one first preferred embodiment of the portable electronic devices 400 of application of aforementioned optical imaging lens, and portable electronic devices 400 comprises a casing 401 and and is arranged on image module in casing 401.Only, for mobile phone, portable electronic devices 400 is described at this, but the pattern of portable electronic devices 400 is not as limit, for example, portable electronic devices 400 also can include but not limited to camera, flat computer, personal digital assistant (personaldigitalassistant is called for short PDA) etc.

As shown in FIG., there is in image module the optical imaging lens of a focal length for immobilizing, it comprises a foregoing optical imaging lens, supplies the substrate 420 and of this module rear seat unit 404 setting be arranged at this substrate 420 and be positioned at the image sensor 422 of the image side of optical imaging lens as exemplarily selected the identical lens set 408, of the optical imaging lens of aforementioned 12 embodiment at this for the lens barrel 402, arranged for optical imaging lens for the module rear seat unit (modulehousingunit) 404, arranged for lens barrel 402.Light enters from opening 406, and form image on imaging surface, it is provided by image sensor 422.

It is noted that, though the present embodiment display optical filtering part 410, but also can omit the structure of optical filtering part 410 in other embodiments, be not limited with necessity of optical filtering part 410, and casing 401, lens barrel 402 and/or module rear seat unit 404 can be single component or multiple assembling components forms, this need not be defined in; Secondly; be image sensor 422 that the present embodiment uses be adopt interconnection system chip package (ChiponBoard on plate; COB) packaged type is connected directly between on substrate 420; with traditional die sized package (ChipScalePackage; the difference of packaged type CSP) is that on plate, interconnection system chip package does not need to use cover glass (coverglass); therefore do not need to arrange cover glass in optical imaging lens before image sensor 422, right the present invention is not as limit.

Quadruple lenses L1, L2, L3, L4 that entirety has refractive index are arranged in lens barrel 402 in the mode that there is a clearance between relative two lens respectively.

Due to the length only 3.675mm of optical imaging lens 1, therefore by more compact for the size design of portable electronic devices 400 ground, and still good optical property and image quality can be provided.By this, make the present embodiment except there is the economic benefit of reduce engine husk as raw material consumption, compact product design trend and consumption demand can also be met.

Separately refer to Figure 15; for one second preferred embodiment of the portable electronic devices 500 of application of aforementioned optical imaging lens; the essential difference of the portable electronic devices 500 of the second preferred embodiment and the portable electronic devices 400 of the first preferred embodiment is: casing 501 comprises a depressed part 505; an accommodating light source 512 in it; and there is an over cap 514 outside depressed part 505, to protect light source 512.Light source 512 can be an infrared light supply or near-infrared light source, and is used in shooting at night photo, and now its object irradiated can't be seen by human eye.Depressed part 505 can be integrally formed with lens barrel 502, module rear seat unit 504, and be preferably lighttight material and make, and disturbs with the light that protective lens group 508 is not come by side direction.Over cap 514 can be and expands the light diffusion that light source 512 sends by light microscopic sheet and carry out.Imaging source enters lens set 508 to form image in the imaging surface of image sensor 522 from opening 506.

It is noted that, though the present embodiment display optical filtering part 510, but also can omit the structure of optical filtering part 510 in other embodiments, be not limited with necessity of optical filtering part 510, and casing 501, lens barrel 502 and/or module rear seat unit 504 can be single component or multiple assembling components forms, this need not be defined in; Secondly; be image sensor 522 that the present embodiment uses be adopt the packaged type of interconnection system chip package on plate to be connected directly between on substrate 520; be that on plate, interconnection system chip package does not need to use cover glass with the difference of the packaged type of traditional die sized package; therefore do not need to arrange cover glass in optical imaging lens before image sensor 522, right the present invention is not as limit.

Quadruple lenses L1, L2, L3, the L4 with refractive index are arranged in lens barrel 502 in the mode that there is a clearance between relative two lens respectively.

Similarly, due to the length only 3.675mm of optical imaging lens, therefore by more compact for the size design of portable electronic devices 500 ground, and still good optical property and image quality can be provided.By this, make the present embodiment except there is the economic benefit of reduce engine husk as raw material consumption, compact product design trend and consumption demand can also be met.

The distortion aberration of the optical imaging lens of the present embodiment meets operating specification, is about be less than 0.5%, and moreover, the TV distortion aberration of Figure 16 A display is about be less than 5%.Figure 16 B shows the rough schematic of distortion aberration effects image quality, and display the present embodiment has excellent dispersion rejection ability.In sum, by lens design with mutually arrange in pairs or groups, can produce excellence image quality.

More than describe according to the multiple different embodiment of the present invention, wherein various features can single or different combination enforcement.Therefore, the exposure of embodiment of the present invention, for illustrating the specific embodiment of principle of the present invention, should be regardless of limit the present invention in disclosed embodiment.Further it, previously described and accompanying drawing is only the use of the present invention's demonstration, do not limit by its limit.The change of other assemblies or combination all may, and not to be contrary in the spirit of the present invention and scope.

Claims (11)

1. an optical imaging lens, it is characterized in that: sequentially comprise an aperture and one first lens, one second lens, one the 3rd lens and one the 4th lens from thing side to image side along an optical axis, before this aperture is placed in these first lens, each lens all has refractive index, and 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, wherein:

This face, image side of these the first lens is convex at circumference near zone;

This thing side of these the second lens is recessed at circumference near zone;

This thing side of 4th lens is convex at optical axis near zone, and its face, image side is recessed at circumference near zone; And

Wherein, this optical imaging lens meets following relationship:

|v1-v4|≦20；

TTL/T4≦10；

ALT/T1≦3.5；

ALT/AAG≤3.5; And

1.5≦T2/AC12≦2.1；

V1 represents the Abbe number of these the first lens, v4 represents the Abbe number of the 4th lens, T4 represents the thickness of the 4th lens on this optical axis, TTL represents the distance of this thing side to imaging surface on optical axis of these the first lens, T1 represents the thickness of these the first lens on this optical axis, ALT represents these first lens to all lens thickness summations of last a slice lens on optical axis, AAG represents all air gap width summations between these first lens to last a slice lens on optical axis, T2 represents the thickness of these the second lens on this optical axis, AC12 represents the air gap width between these first lens and this second lens on this optical axis.

2. a kind of optical imaging lens according to claim 1, it is characterized in that: wherein this optical imaging lens meets ALT/BFL≤1.751 first watch, BFL represents the back focal length of this optical imaging lens, i.e. the distance of this face to one, image side imaging surface on optical axis of last a slice lens.

3. a kind of optical imaging lens according to claim 2, is characterized in that: wherein this optical imaging lens meets T1/T2≤2.244 first watch.

4. a kind of optical imaging lens according to claim 2, is characterized in that: wherein this optical imaging lens comprises first watch: this face, image side of these the second lens is convex at circumference near zone.

5. a kind of optical imaging lens according to claim 2, is characterized in that: wherein this optical imaging lens meets 2.237≤BFL/T4 first watch.

6. a kind of optical imaging lens according to claim 1, is characterized in that: wherein this optical imaging lens meets following relationship first watch:

ALT/(T1+T4)≦1.9；

ALT/T2≦6.3；

0.7≦AAG/T1；

2.5≤AAG/AC12; And

TTL/T1≦7。

7. a kind of optical imaging lens according to claim 6, is characterized in that: wherein this optical imaging lens meets following relationship first watch:

TTL≦6；

Fno≤2.8; And

3≦HFOV；

Fno represents the f-number (fnumber) of this optical imaging lens, and HFOV represents the half angle of view (halffieldofview) of this optical imaging lens.

8. a kind of optical imaging lens according to claim 7, is characterized in that: wherein this optical imaging lens meets first watch | v1-v2|≤15, v1 represents the Abbe number of these the first lens, and v2 represents the Abbe number of these the second lens.

9. a kind of optical imaging lens according to claim 8, is characterized in that: wherein this optical imaging lens meets TTL/T2≤12 first watch.

10. a kind of optical imaging lens according to claim 9, is characterized in that: wherein this optical imaging lens meets T4/AC12≤5 first watch.

11. 1 kinds of portable electronic devices, is characterized in that: comprising:

One casing; And

One image module, is installed in this casing, comprises:

Just like claim the 1 to the optical imaging lens according to any one of the 10th;

One lens barrel, arranges this optical imaging lens to supply;

One module rear seat unit, arranges this lens barrel to supply; And

One image sensor, is positioned at the image side of this optical imaging lens.