CN104122653A

CN104122653A - Optical imaging lens and electronic device using same

Info

Publication number: CN104122653A
Application number: CN201410081732.8A
Authority: CN
Inventors: 公金辉
Original assignee: Genius Electronic Optical Xiamen Co Ltd
Current assignee: Genius Electronic Optical Xiamen Co Ltd
Priority date: 2014-03-07
Filing date: 2014-03-07
Publication date: 2014-10-29

Abstract

The invention relates to an optical imaging lens and an electronic device with the same. The optical imaging lens comprises a first lens and a second lens from the object side to the image side. A convex portion on the area nearby the optical axis is arranged on the object side of the first lens, and a convex portion on the area nearby the circumference is arranged on the image side of the second lens. Only the two lenses have refractive index. The electronic device comprises a machine casing and an image module installed in the machine casing. The image module comprises the optical imaging lens, a lens cone used for arranging the optical imaging lens, a module rear seat unit used for arranging the lens cone, a base plate used for arranging the module rear seat unit and an image sensor arranged on the base plate and located on the image side of the optical imaging lens. The electronic device and the optical imaging lens maintain good optical performance and can effectively reduce lens length.

Description

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

Technical field

The present invention relates to optical imaging lens and there is the electronic installation of optical imaging lens, relate in particular 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 in specification, to meet consumer demand.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 can reach the object of reduced volume, 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 difficult for taking into account in volume and image quality.

Optical lens design not just can be produced camera lens scaled down good image quality merely and be had image quality and microminiaturized optical lens concurrently, and design process involves material behavior, also must consider the practical problems of assembling the production faces such as yield.

In sum, the technical difficulty of microminiaturized camera lens obviously exceeds conventional lenses, therefore how to produce the optical lens that meets 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 the characteristic such as concave-convex curved surface arrangement and/or refractive index configuration of each lens, and maintaining favorable optical performance and maintaining under the condition of system performance, shorten system length.

According to the present invention, a kind of optical imaging lens is provided, each lens all have one towards thing side and make thing side that imaging light passes through and one towards as side and picture side that imaging light is passed through, by thing side to comprising as side: one is positioned at optical axis near zone in thing side and has the first lens of a convex surface part; One is being positioned at circumference near zone and has the second lens of a convex surface part as side; Wherein, this optical imaging lens only includes above-mentioned two lens and has refractive index.

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

This optical imaging lens meets following conditional (1):

1.1≤TTL/ALT≤5.8。Conditional (1)

Or this optical imaging lens meets following conditional (2):

TTL/Gaa≤23.3。Conditional (2)

Or this optical imaging lens meets following conditional (3):

1.1≤ALT/T2≤3.0。Conditional (3)

Or this optical imaging lens meets following conditional (4):

ALT/G12≥1.2。Conditional (4)

Or this optical imaging lens meets following conditional (5):

TTL/G2F≥5.0。Conditional (5)

Or this optical imaging lens meets following conditional (6):

ALT/Gaa≥1.2。Conditional (6)

Or this optical imaging lens meets following conditional (7):

BFL/G12≥0.8。Conditional (7)

Or this optical imaging lens meets following conditional (8):

TTL/T2≥2.3。Conditional (8)

Or this optical imaging lens meets following conditional (9):

TTL/T1≥2.4。Conditional (9)

Or this optical imaging lens meets following conditional (10):

BFL/T1≥0.7。Conditional (10)

Or this optical imaging lens meets following conditional (11):

ALT/G2F≥2.3。Conditional (11)

Or this optical imaging lens meets following conditional (12):

ALT/T1≥1.3。Conditional (12)

Or this optical imaging lens meets following conditional (13):

BFL/T2≥0.8。Conditional (13)

Or this optical imaging lens meets following conditional (14):

TTL/BFL≥1.9。Conditional (14)

Or this optical imaging lens meets following conditional (15):

Gaa/T1≥0.2。Conditional (15)

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

In the time that enforcement is of the present invention, except above-mentioned conditional, also can for single lens or popularity go out thin portion's structure and/or the refractive index such as concave-convex curved surface arrangement of other more lens and/or additionally increase the parts such as aperture for two lens additional designs, to strengthen the control to system performance and/or resolution.For example: this first lens has positive refractive index; Also comprise an aperture, and before this aperture is positioned at first lens; This first lens is positioned at circumference near zone in thing side and has a convex surface part; These second lens are positioned at circumference near zone and have a concave surface portion in thing side; These second lens have negative refractive index, and these second lens are positioned at optical axis near zone and have a concave surface portion in thing side; This first lens has a convex surface part being positioned at optical axis near zone as side; This first lens has a convex surface part etc. being positioned at circumference near zone as side.It is noted that, also can, under conflict free situation, optionally merge and be applied in the middle of other embodiment of the present invention in this listed characteristic such as exemplary thin portion structure and/or refractive index, be not limited to this.

The present invention can be 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 the lens barrel that arranges for this optical imaging lens, one for the module back seat unit arranging for this lens barrel, a substrate for arranging for this module back seat unit, an and image sensor that is arranged at this substrate and is positioned at this optical imaging lens head portrait side.

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

Brief description of the drawings

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.

Figure 16 is the cross-sectional view of the two-piece type lens of the optical imaging lens of the eighth embodiment of the present invention.

Figure 17 a is the schematic diagram of the longitudinal spherical aberration of the optical imaging lens of the eighth embodiment of the present invention.

Figure 17 b is the schematic diagram of the astigmatism of the optical imaging lens of the eighth embodiment of the present invention.

Figure 17 c is the schematic diagram of the distortion aberration of the optical imaging lens of the eighth 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 that embodiment is described, and can coordinate the associated description of instructions to explain the operation principles of embodiment.Coordinate with reference to these contents, this area has embodiment and the advantage of the present invention of conventionally knowing that the knowledgeable will be understood that other are possible.Assembly in figure not drawn on scale, and similarly 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 picture side) of lens comprises the convex surface part (or concave surface portion) that is positioned at certain region ", refer to the exterior lateral area of this region compared to this region of radially upper next-door neighbour, towards more " outwardly convex " (or " the caving inward ") of direction that is parallel to optical axis.Taking Fig. 1 as example, wherein I be optical axis and this lens be taking this optical axis I as axis of symmetry radially symmetrical, the thing side of these lens has convex surface part in a-quadrant, B region has concave surface portion and C region has convex surface part, reason is the exterior lateral area (be B region) of a-quadrant compared to this region of radially upper next-door neighbour, towards the more outwardly convex of direction that is parallel to optical axis, B region more caves inward compared to C region, and C region compared to E region also outwardly convex more in like manner." 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 C region in figure, wherein, imaging light has comprised 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 this curved surface only passing through for imaging light, that is a-quadrant in figure.In addition, these lens also comprise an extension E, use for this entirety of lens package in an optical imaging lens, and desirable imaging light can't pass through this extension E, but structure and the shape of this extension E are not limited to this, following embodiment asks accompanying drawing succinctly all to omit the extension of part.

In addition, for convenience of explanation, first the english abbreviation of the each optical property parameter term relating in optical imaging lens of the present invention is carried out to defined declaration below.In follow-up explanation, directly describe 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 first lens on optical axis
G12	First lens is the distance on optical axis as lens thing side, side to the second
		T2	The thickness of the second lens on optical axis
G2F	The second lens are as the distance of side to infrared filter thing side on optical axis
		TF	The thickness of infrared filter on optical axis
GFP	Infrared filter as side to imaging surface the distance on optical axis
		f1	The focal length of first lens
f2	The focal length of the second lens
		n1	The refractive index of first lens
n2	The refractive index of the second lens
		ν1	The Abbe coefficient of first lens
ν2	The Abbe coefficient of the second lens
		EFL	The whole focal length of system
TTL	First lens thing side is the length on optical axis to imaging surface
		ALT	The sum total of the lens thickness of first lens to the second lens on optical axis
Gaa	First lens is the sum total on optical axis as the clearance between lens thing side, side to the second
		BFL	The second lens as side to imaging surface the length on optical axis

Optical imaging lens of the present invention, be by being formed from thing side to the first lens and the second lens that sequentially arrange along an optical axis as side, each lens all have one towards thing side and make thing side that imaging light passes through and one towards as side and make the side that looks like that imaging light passes through.Optical imaging lens of the present invention only has two lens with 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: first lens is positioned at optical axis near zone in thing side and has a convex surface part, and the second lens have a convex surface part being positioned at circumference near zone as side.

Be mainly to consider optical characteristics and the field angle of optical imaging lens in the characteristic of this two eyeglasses of this design, first lens is positioned at optical axis near zone in thing side and has a convex surface part, and the second lens have a convex surface part being positioned at circumference near zone as side.Two aforementioned detailings of the common collocation of eyeglass, the present invention can reach the effect of the image quality of raising system.

Secondly, in various embodiments of the present invention, the ratio of optionally additionally controlling parameter meets other relational expressions, and to assist deviser to design to possess, favorable optical performance, entire length effectively shorten and technical feasible optical imaging lens, as:

This optical imaging lens meets following conditional (1):

1.1≤TTL/ALT≤5.8。Conditional (1)

Or this optical imaging lens meets following conditional (2):

TTL/Gaa≤23.3。Conditional (2)

Or this optical imaging lens meets following conditional (3):

1.1≤ALT/T2≤3.0。Conditional (3)

Or this optical imaging lens meets following conditional (4):

ALT/G12≥1.2。Conditional (4)

Or this optical imaging lens meets following conditional (5):

TTL/G2F≥5.0。Conditional (5)

Or this optical imaging lens meets following conditional (6):

ALT/Gaa≥1.2。Conditional (6)

Or this optical imaging lens meets following conditional (7):

BFL/G12≥0.8。Conditional (7)

Or this optical imaging lens meets following conditional (8):

TTL/T2≥2.3。Conditional (8)

Or this optical imaging lens meets following conditional (9):

TTL/T1≥2.4。Conditional (9)

Or this optical imaging lens meets following conditional (10):

BFL/T1≥0.7。Conditional (10)

Or this optical imaging lens meets following conditional (11):

ALT/G2F≥2.3。Conditional (11)

Or this optical imaging lens meets following conditional (12):

ALT/T1≥1.3。Conditional (12)

Or this optical imaging lens meets following conditional (13):

BFL/T2≥0.8。Conditional (13)

Or this optical imaging lens meets following conditional (14):

TTL/BFL≥1.9。Conditional (14)

Or this optical imaging lens meets following conditional (15):

Gaa/T1≥0.2。Conditional (15)

Above-mentioned qualified relation is to change with the angle of manufacturing technology door, optical characteristics quality and field angle magnitude relationship and set out according to parameters, above-mentioned conditional is proposed, can design possess favorable optical performance, system length shorten and technical feasible, manufacture on feasible optical imaging lens.

Wherein, the design of 1.1≤TTL/ALT≤5.8 is to be conceived to the difficulty or ease of manufacturing process and the consideration of the rationality of lens optical performance quality that lens length shortens.

The design of TTL/Gaa≤23.3 is to be conceived to lens length shortening need shorten in the lump the clearance between two lens, and considers path and the eyeglass making difficulty of light.Preferably, TTL/Gaa can be limited by a lower limit, as: 2.9≤TTL/Gaa≤23.3.

The design of 1.1≤ALT/T2≤3.0 is to be conceived to, for lens length is shortened, need shorten in the lump the thickness of each lens.In the time meeting this conditional, the shortening of the thickness of control the second lens is less for the impact of lens optical performance.

The design of ALT/G12 >=1.2 is to be conceived to shorten in the process of camera lens, except shortening lens thickness, the clearance between two lens can be diminished, and in the time meeting this conditional, can make clearance shorten.Preferably, ALT/G12 can be limited by a higher limit, as: 12.6 >=ALT/G12 >=1.2.

The design of TTL/G2F >=5.0 is to be conceived to shorten in the process of camera lens, can will shorten the clearance of the second lens picture and infrared filter, and preferably, TTL/G2F can be limited by a higher limit, as: 9.3 >=TTL/G2F >=5.0.

The design of ALT/Gaa >=1.2 is to be conceived to shorten in the process of camera lens, lens length shortens the clearance that need shorten in the lump clearance between two lens and the second lens picture and infrared filter, imaging surface, and considers path and the eyeglass making difficulty of light.Preferably, TTL/Gaa can be limited by a higher limit, as: 12.6 >=ALT/Gaa >=1.2.

The design of BFL/G12 >=0.8 is to be conceived to shorten in the process of camera lens, shortens in the process of camera lens, except shortening the clearance of the second lens picture and infrared filter, imaging surface, more needs to shorten as far as possible two clearances between lens.Preferably, BFL/G12 can be limited by a higher limit, as: 9.5 >=BFL/G12 >=0.8.

TTL/T2 >=2.3 design is to be conceived to shorten in the process of camera lens, and than dwindling of clearance between each length of lens and each parts, the shortening of the thickness of control the second lens is less for the impact of lens optical performance.Preferably, TTL/T2 can be limited by a higher limit, as: 5.4 >=TTL/T2 >=2.3.

TTL/T1 >=2.4 design is to be conceived to shorten in the process of camera lens, and than dwindling of clearance between each length of lens and each parts, the shortening of the thickness of control first lens is less for the impact of lens optical performance.Preferably, TTL/T1 can be limited by a higher limit, as: 9.5 >=TTL/T1 >=2.4.

The design of BFL/T1 >=0.7 is to be conceived to shorten in the process of camera lens, shortens in the process of camera lens, except shortening the clearance of the second lens picture and infrared filter, imaging surface, more needs to shorten as far as possible the thickness of first lens.Preferably, BFL/T1 can be limited by a higher limit, as: 2.9 >=BFL/T1 >=0.7.

The design of ALT/G2F >=2.3 is to be conceived to shorten in the process of camera lens, except shortening in the lump the thickness of each lens, more need to shorten the clearance of the second lens picture and infrared filter, preferably, ALT/G2F can be limited by a higher limit, as: 5.1 >=ALT/G2F >=2.3.

ALT/T1 >=1.3 design is to be conceived to, for lens length is shortened, need shorten in the lump the thickness of each lens.In the time meeting this conditional, the shortening of the thickness of control first lens is less for the impact of lens optical performance.Preferably, ALT/T1 can be limited by a higher limit, as: 4.0 >=ALT/T1 >=1.3.

The design of BFL/T2 >=0.8 is to be conceived to shorten in the process of camera lens, shortens in the process of camera lens, except shortening the clearance of the second lens picture and infrared filter, imaging surface, more needs to shorten as far as possible the thickness of the second lens.Preferably, BFL/T2 can be limited by a higher limit, 1.9 >=BFL/T2 >=0.8.

The design of TTL/BFL >=1.9 is to be conceived to shorten in the process of camera lens, should shorten the clearance of the second lens picture and infrared filter, imaging surface as far as possible.Preferably, TTL/BFL can be limited by a higher limit, 4.2 >=TTL/BFL >=1.9.

The design of Gaa/T1 >=0.2 is to be conceived to shorten in the process of camera lens, except shortening the clearance of clearance between two lens and the second lens picture and infrared filter, imaging surface, more needs to shorten as far as possible the thickness of first lens.Preferably, Gaa/T1 can be limited by a higher limit, 2.6 >=Gaa/T1 >=0.2.

In order to illustrate that the present invention can, when good optical property is provided, shorten system overall length really, below provide multiple embodiment with and detailed optical data carry out launching in detail explanation.

The first embodiment:

Consult shown in Fig. 2, the optical imaging lens 1 of the present invention's the first preferred embodiment, by thing side A1 to comprise an aperture 100, first lens 110, second lens 120 as side A2, an and optical filtering part 130.This first lens 110 has a thing side 111 towards thing side A1 and towards the picture side 112 of picture side A2, and these second lens 120 have a thing side 121 towards thing side A1 and a picture side 122 towards picture side A2.Optical filtering part 130 is exemplarily an infrared filter (IR cut filter) at this, is located between the second lens 12 and imaging surface 140, and optical filtering part 130 has equally a thing side 131 towards thing side A1 and has a picture side 132 towards picture side A2.Optical filtering part 130 will filter out through the light of optical imaging lens 1 wavelength of specific band, as: filter out infrared ray wave band, can make the wavelength of the infrared ray wave band that human eye can't see can not image on imaging surface 140 and affect image quality.

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

This first lens 110 has positive refractive index, there is a thing side 111 towards thing side A1 and towards the picture side 112 of picture side A2, and be positioned at optical axis near zone in thing side 111 and there is a convex surface part 1111, be positioned in thing side 111 circumference near zone and there is a convex surface part 1112, be positioned at optical axis near zone as side 112 and there is a concave surface portion 1121, thering is a concave surface portion 1121 being positioned at circumference near zone as side 112.

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

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

The thing side 111 of above-mentioned first lens 110, as the thing side 121 of side 112 and the second lens 120, be aspheric surface as side 122, these four aspheric shapes all represent with following curvilinear equation formula:

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 (point that in aspheric surface, distance optical axis is Y, with the tangent plane that is tangential on summit on aspheric surface optical axis, vertical range between the two);

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

K: circular cone coefficient;

A _i: i 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, between the imaging surface 140 of design first lens 110, the second lens 120, optical filtering part 130 and image sensor, all there is clearance, as: between first lens 110 and the second lens 120, exist between the imaging surface 140 that has clearance d2, optical filtering part 130 and image sensor between clearance d1, the second lens 120 and optical filtering part 130 and have clearance d3.But in other embodiments, also can not there is aforementioned wherein arbitrary clearance, and as: the surface profile of two relative lens is designed to corresponding each other, and can fits each other, to eliminate clearance therebetween.

About each optical characteristics of the 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 that meet above-mentioned conditional, and to imaging surface 140, the thickness on optical axis (is TTL from first lens 110 thing sides 111, system overall length) be 1.69802473mm, 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, can find out, 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 performance c) is all very good.

Therefore, by learning in above-mentioned, the optical imaging lens 1 of the present embodiment can maintain favorable optical performance really, and effectively shortens lens length.

The second embodiment:

Consult shown in Fig. 4, in the optical imaging lens 2 of the present invention's the second preferred embodiment, be to use to indicate similar assembly to the similar label of the first embodiment, label beginning changes 2 into only as used herein, for example first lens 210, its thing side is 211, the second lens 220, it is 222 as side, other assembly label does not repeat them here.

The optical imaging lens 2 of the present embodiment, by thing side A1 to comprise an aperture 200, first lens 210, second lens 220 as side A2, an and optical filtering part 230.Refractive index concavo-convex configuration and first embodiment identical with the first embodiment and lens surface of the first lens 210 of this embodiment are similar, and the concavo-convex configuration of the lens surface of the second lens 220 is all identical with the first embodiment; Difference is: first lens 210 is being positioned at refractive index that circumference near zone has convex surface part 2122, the second lens 220 for negative as side 212.

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

The thing side 211 of above-mentioned first lens 210, as the thing side 221 of side 212 and the second lens 220, be aspheric surface as side 222, these four aspheric shapes are all that the curvilinear equation formula 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 the 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 that meet above-mentioned conditional, and to imaging surface 240, the thickness on optical axis (is TTL from first lens 210 thing sides 211, system overall length) be 1.71898321mm, 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, can find out, 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 performance c) is all very good.

Therefore, by learning 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 than the optical imaging lens 1 of the first embodiment: the angle of half field-of view of the second embodiment is greater than the first embodiment; The second embodiment is easy to manufacture that therefore yield is higher than the first embodiment.

The 3rd embodiment:

Consult shown in Fig. 6, in the optical imaging lens 3 of the present invention's the 3rd preferred embodiment, be to use to indicate similar assembly to the similar label of the first embodiment, label beginning changes 3 into only as used herein, for example first lens 310, its thing side is 311, the second lens 320, it is 322 as side, other assembly label does not repeat them here.

The optical imaging lens 3 of the present embodiment, by thing side A1 to comprise an aperture 300, first lens 310, second lens 320 as side A2, an and optical filtering part 330.Refractive index concavo-convex configuration and first embodiment identical with the first embodiment and lens surface of the first lens 310 of this embodiment are similar, and the concavo-convex configuration of the lens surface of the second lens 320 is all identical with the first embodiment; Difference is: first lens 310 has a convex surface part 3121, is being positioned at refractive index that circumference near zone has convex surface part 3122, the second lens 320 as side 312 for negative being positioned at optical axis near zone as side 312.

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

The thing side 311 of above-mentioned first lens 310, as the thing side 321 of side 312 and the second lens 320, be aspheric surface as side 322, these four aspheric shapes are all that the curvilinear equation formula 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 the 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 that meet above-mentioned conditional, and to imaging surface 340, the thickness on optical axis (is TTL from first lens 310 thing sides 311, system overall length) be 1.71459028mm, 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, can find out, 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 performance c) is all very good.

Therefore, by learning 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 than the optical imaging lens 1 of the first embodiment: the angle of half field-of view of the 3rd embodiment is greater than the first embodiment; The 3rd embodiment is easy to manufacture that therefore yield is higher than the first embodiment.

The 4th embodiment:

Consult shown in Fig. 8, in the optical imaging lens 4 of the present invention's the 4th preferred embodiment, be to use to indicate similar assembly to the similar label of the first embodiment, label beginning changes 4 into only as used herein, for example first lens 410, its thing side is 411, the second lens 420, it is 422 as side, other assembly label does not repeat them here.

The optical imaging lens 4 of the present embodiment, by thing side A1 to comprise an aperture 400, first lens 410, second lens 420 as side A2, an and optical filtering part 430.The refractive index of the first lens 410 of this embodiment and the concavo-convex configuration of lens surface are 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; Difference is: the second lens 420 are positioned at optical axis near zone and have a concave surface portion 4211, have a convex surface part 4221 being positioned at optical axis near zone as side 422 in thing side 421.

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

The thing side 411 of above-mentioned first lens 410, as the thing side 421 of side 412 and the second lens 420, be aspheric surface as side 422, these four aspheric shapes are all that the curvilinear equation formula 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 the 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 that meet above-mentioned conditional, and to imaging surface 440, the thickness on optical axis (is TTL from first lens 410 thing sides 411, system overall length) be 1.87615667mm, 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, can find out, 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 performance c) is all very good.

Therefore, by learning 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 than the optical imaging lens 1 of the first embodiment: the image quality of the 4th embodiment is better than the first embodiment (aberration, distortion figure); The 4th embodiment is easy to manufacture that therefore yield is higher than the first embodiment.

The 5th embodiment:

Consult shown in Figure 10, in the optical imaging lens 5 of the present invention's the 5th preferred embodiment, be to use to indicate similar assembly to the similar label of the first embodiment, label beginning changes 5 into only as used herein, for example first lens 510, its thing side is 511, the second lens 520, it is 522 as side, other assembly label does not repeat them here.

The optical imaging lens 5 of the present embodiment, by thing side A1 to comprise an aperture 500, first lens 510, second lens 520 as side A2, an and optical filtering part 530.Refractive index concavo-convex configuration and first embodiment identical with the first embodiment, its lens surface of the first lens 510 of this embodiment are similar, and concavo-convex configuration and first embodiment of the lens surface of the second lens 520 are similar; Difference is: first lens 510 is being 512 to be positioned at optical axis near zone and to have a convex surface part 5121, have convex surface part 5122, the second lens 520 and be positioned at refractive index that optical axis near zone has a concave surface portion 5211 and the second lens 520 in thing side 521 for negative being positioned at circumference near zone as side 512 as side.

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

The thing side 511 of above-mentioned first lens 510, as the thing side 521 of side 512 and the second lens 520, be aspheric surface as side 522, these four aspheric shapes are all that the curvilinear equation formula 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 the 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 that meet above-mentioned conditional, and to imaging surface 540, the thickness on optical axis (is TTL from first lens 510 thing sides 511, system overall length) be 1.98254897mm, 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, can find out, 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 performance c) is all very good.

Therefore, by learning 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 than the optical imaging lens 1 of the first embodiment: the image quality of the 5th embodiment is better than the first embodiment (aberration, distortion figure); The 5th embodiment is easy to manufacture that therefore yield is higher than the first embodiment.

The 6th embodiment:

Consult shown in Figure 12, in the optical imaging lens 6 of the present invention's the 6th preferred embodiment, be to use to indicate similar assembly to the similar label of the first embodiment, label beginning changes 6 into only as used herein, for example first lens 610, its thing side is 611, the second lens 620, it is 622 as side, other assembly label does not repeat them here.

The optical imaging lens 6 of the present embodiment, by thing side A1 to comprise an aperture 600, first lens 610, second lens 620 as side A2, an and optical filtering part 630.Refractive index concavo-convex configuration and first embodiment identical with the first embodiment, its lens surface of the first lens 610 of this embodiment are similar, and concavo-convex configuration and first embodiment of the lens surface of the second lens 620 are similar; Difference is: first lens 610 is being 612 to be positioned at optical axis near zone and to have a convex surface part 6121, have convex surface part 6122, the second lens 620 and be positioned at refractive index that optical axis near zone has a concave surface portion 6211 and the second lens 620 in thing side 621 for negative being positioned at circumference near zone as side 612 as side.

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

The thing side 611 of above-mentioned first lens 610, as the thing side 621 of side 612 and the second lens 620, be aspheric surface as side 622, these four aspheric shapes are all that the curvilinear equation formula 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 the 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 that meet above-mentioned conditional, and to imaging surface 640, the thickness on optical axis (is TTL from first lens 610 thing sides 611, system overall length) be 1.97987789mm, 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, can find out, 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 performance c) is all very good.

Therefore, by learning 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 than the optical imaging lens 1 of the first embodiment: the aperture F# of the 6th embodiment is than the first embodiment large (F# value is less, and aperture is larger); The 6th embodiment is easy to manufacture that therefore yield is higher than the first embodiment.

The 7th embodiment:

Consult shown in Figure 14, in the optical imaging lens 7 of the present invention's the 7th preferred embodiment, be to use to indicate similar assembly to the similar label of the first embodiment, label beginning changes 7 into only as used herein, for example first lens 710, its thing side is 711, the second lens 720, it is 722 as side, other assembly label does not repeat them here.

The optical imaging lens 7 of the present embodiment, by thing side A1 to comprise an aperture 700, first lens 710, second lens 720 as side A2, an and optical filtering part 730.The refractive index of the first lens 710 of this embodiment and the concavo-convex configuration of lens surface are 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; Difference is: the second lens 720 have a convex surface part 7221 being positioned at optical axis near zone as side 722.

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

The thing side 711 of above-mentioned first lens 710, as the thing side 721 of side 712 and the second lens 720, be aspheric surface as side 722, these four aspheric shapes are all that the curvilinear equation formula 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 the 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 that meet above-mentioned conditional, and to imaging surface 740, the thickness on optical axis (is TTL from first lens 710 thing sides 711, system overall length) be 1.87700557mm, 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, can find out, 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 performance c) is all very good.

Therefore, by learning 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 than the optical imaging lens 1 of the first embodiment: the whole focal length EFL of the system of the 7th embodiment is shorter than the first embodiment; The image quality of the 7th embodiment is better than the first embodiment (aberration, distortion figure); The 7th embodiment is easy to manufacture that therefore yield is higher than the first embodiment.

The 8th embodiment:

Consult shown in Figure 16, in the optical imaging lens 8 of the present invention's the 8th preferred embodiment, be to use to indicate similar assembly to the similar label of the first embodiment, label beginning changes 8 into only as used herein, for example first lens 810, its thing side is 811, the second lens 820, it is 822 as side, other assembly label does not repeat them here.

The optical imaging lens 8 of the present embodiment, by thing side A1 to comprise an aperture 800, first lens 810, second lens 820 as side A2, an and optical filtering part 830.The refractive index of the first lens 810 of this embodiment and the concavo-convex configuration of lens surface are all identical with the first embodiment, the refractive index of the second lens 820 is identical with the first embodiment, the concavo-convex configuration of its lens surface and the first embodiment similar; Difference is: the second lens 820 have a convex surface part 8221 being positioned at optical axis near zone as side 822.

In this preferred embodiment, only have above-mentioned first lens 810 and the second lens 820 to possess refractive index.

The thing side 811 of above-mentioned first lens 810, as the thing side 821 of side 812 and the second lens 820, be aspheric surface as side 822, these four aspheric shapes are all that the curvilinear equation formula identical with the first embodiment represents.

Each aspheric parameter detailed data of each lens in the optical imaging lens 8 of the 8th embodiment is as shown in following table 8-1.

Table 8-1:

About each optical characteristics of the each lens in the optical imaging lens 8 of the present embodiment and the width of each clearance as shown in following table 8-2.

Table 8-2:

About the systematic parameter of the optical imaging lens 8 of the present embodiment as shown in following table 8-3.

Table 8-3:

After upper calculating, the optical imaging lens 8 of the 8th embodiment is all the restrictions that meet above-mentioned conditional, and to imaging surface 840, the thickness on optical axis (is TTL from first lens 810 thing sides 811, system overall length) be 1.93758795mm, really shorten the lens length of optical imaging lens 8.

On the other hand, in the middle of Figure 17 a to Figure 17 c, can find out, the optical imaging lens 8 of the present embodiment longitudinal spherical aberration (Figure 17 a), astigmatism (Figure 17 b, the sagitta of arc, meridian direction), distortion aberration (Figure 17 performance c) is all very good.

Therefore, by learning in above-mentioned, the optical imaging lens 8 of the present embodiment can maintain favorable optical performance really, and effectively shortens lens length.

In addition, the optical imaging lens 8 of the 8th embodiment also has following effect than the optical imaging lens 1 of the first embodiment: the whole focal length EFL of the system of the 8th embodiment is shorter than the first embodiment; The image quality of the 8th embodiment is better than the first embodiment (aberration, distortion figure); The 8th embodiment is easy to manufacture that therefore yield is higher than the first embodiment.

Conclude the TTL that calculates above eight embodiment, ALT, Gaa, BFL, ALT/BFL, ALT/G12, ALT/G2F, ALT/Gaa, ALT/T1, ALT/T2, BFL/G12, BFL/G2F, BFL/Gaa, BFL/T1, BFL/T2, Gaa/G12, Gaa/G2F, Gaa/T1, Gaa/T2, TTL/ALT, TTL/BFL, TTL/G12, TTL/G2F, TTL/Gaa, TTL/T1 and TTL/T2 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 (11), conditional (12), conditional (13), conditional (14) and/or conditional (15).The above-mentioned parameter value of above eight calculating that embodiment concludes, as shown in table 9 below.

Table 9:

Parameter value	Scope lower limit	Range limit	Embodiment 1	Embodiment 2	Embodiment 3	Embodiment 4	Embodiment 5	Embodiment 6	Embodiment 7	Embodiment 8
											TTL	?	?	1.698	1.719	1.715	1.876	1.983	1.980	1.877	1.938
ALT	?	?	0.853	0.813	0.845	0.863	0.860	1.101	0.869	1.046
											Gaa	?	?	0.216	0.327	0.313	0.204	0.554	0.310	0.200	0.100
BFL	?	?	0.629	0.578	0.557	0.810	0.569	0.568	0.808	0.792
											ALT/BFL	0.9	2.3	1.357	1.407	1.516	1.065	1.510	1.938	1.076	1.321
ALT/G12	1.2	12.6	3.958	2.485	2.700	4.228	1.552	3.553	4.346	10.459
											ALT/G2F	2.3	5.1	3.885	3.404	3.421	2.877	3.317	4.264	2.899	3.515
ALT/Gaa	1.2	12.6	3.958	2.485	2.700	4.228	1.552	3.553	4.346	10.459
											ALT/T1	1.3	4.0	2.335	3.101	2.493	2.551	3.306	1.659	2.530	2.788
ALT/T2	1.1	3.0	1.749	1.476	1.670	1.645	1.434	2.517	1.654	1.559
											BFL/G12	0.8	9.5	2.917	1.767	1.781	3.968	1.028	1.834	4.041	7.917
BFL/G2F	1.8	3.4	2.863	2.420	2.256	2.700	2.197	2.200	2.696	2.660
											BFL/Gaa	0.8	9.5	2.917	1.767	1.781	3.968	1.028	1.834	4.041	7.917
BFL/T1	0.7	2.9	1.721	2.204	1.644	2.394	2.189	0.856	2.353	2.110
											BFL/T2	0.8	1.9	1.289	1.049	1.101	1.544	0.950	1.299	1.537	1.180
Gaa/G12	0.8	1.2	1.000	1.000	1.000	1.000	1.000	1.000	1.000	1.000
											Gaa/G2F	0.3	2.6	0.982	1.370	1.267	0.681	2.137	1.200	0.667	0.336
Gaa/T1	0.2	2.6	0.590	1.248	0.923	0.603	2.130	0.467	0.582	0.267
											Gaa/T2	0.1	1.1	0.442	0.594	0.618	0.389	0.924	0.708	0.380	0.149
TTL/ALT	1.1	5.8	1.990	2.113	2.030	2.175	2.307	1.797	2.160	1.852
											TTL/BFL	1.9	4.2	2.700	2.973	3.078	2.317	3.483	3.483	2.323	2.448
TTL/G12	0.1	0.7	0.216	0.327	0.313	0.204	0.554	0.310	0.200	0.100
											TTL/G2F	5.0	9.3	7.730	7.194	6.944	6.258	7.652	7.665	6.262	6.511
TTL/Gaa	2.9	23.3	7.875	5.252	5.481	9.196	3.580	6.387	9.387	19.376
											TTL/T1	2.4	9.2	4.646	6.553	5.060	5.548	7.625	2.983	5.465	5.165
TTL/T2	2.3	5.4	3.479	3.119	3.390	3.578	3.307	4.524	3.571	2.889

Because the unpredictability of Optical System Design, under framework of the present invention, meet above-mentioned conditional and can preferably 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 ± 0.08mm, ± 0.3mm, ± 3% in.Can learn thus, three kinds of red, green, blues represent that wavelength is near the Off-axis-light of differing heights all concentrates on imaging point, can find out that the imaging point deviation of the Off-axis-light of differing heights all obtains to control and have good spherical aberration, aberration, distortion suppress ability by the skewness magnitude level of each curve.Further consult the image quality data of each embodiment in accompanying drawing, three kinds of red, green, blues represent that wavelength distance is to each other also quite approaching, and surperficial the present invention is good and have good dispersion and suppress ability to the centrality of different wave length light under various states.Therefore, the present invention arranges in pairs or groups with mutual by the design of described lens, and can produce excellent image quality.

In addition, the system total length of various embodiments of the present invention is all less than 2.2mm, and therefore the present invention really can be under the condition that maintains favorable optical performance, shortens lens length to reach microminiaturized target.

Based on above-mentioned optical imaging lens, the present invention also proposes the electronic installation of application of aforementioned optical imaging lens.The first preferred embodiment of this electronic installation is to comprise: a casing and an image module being arranged in casing.Only that this electronic installation is described as an example of mobile phone example at this, but the pattern of electronic installation is not as limit, for instance, 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 the optical imaging lens, one of exemplarily selecting aforementioned the first embodiment at this are arranged at the image sensor of optical imaging lens head portrait side for the lens barrel that arranges for optical imaging lens, substrate for the module back seat unit (module housing unit) arranging for lens barrel, this module back seat unit setting of confession and one.Imaging surface is to be formed at image sensor.

It is noted that, though the present embodiment shows optical filtering part, but also can omit in other embodiments the structure of optical filtering part, not be limited with necessity of optical filtering part, and casing, lens barrel and/or module back seat unit can be single component or multiple assembly assembles, need not be defined in this; Secondly; the image sensor that the present embodiment uses is to adopt interconnection system chip package (Chip on Board on plate; COB) packaged type is directly connected on substrate; with traditional die size encapsulation (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 cover glass need to be set in optical imaging lens before image sensor, and so the present invention is not as limit.

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

Module back seat unit comprises uses the camera lens back seat and the image sensor back seat that arrange for lens barrel.Lens barrel is along an axis coaxle setting with camera lens back seat, and lens barrel is arranged at camera lens back seat inner side, 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 only 1.69802473mm of length of optical imaging lens 1, therefore can be by more compact the size design ground of this electronic installation, and good optical property and image quality still can be provided.Therefore, the present embodiment, except having the economic benefit that reduces casing raw material consumption, can also meet compact product design trend and consumption demand.

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

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

Similarly, due to the only 1.69802473mm of length of optical imaging lens 1, therefore can be by more compact the size design ground of portable electronic devices, and good optical property and image quality still can be provided.Therefore, the present embodiment, except having the economic benefit that reduces casing raw material consumption, can also meet compact product design trend and consumption demand.

By learning in above-mentioned, electronic installation of the present invention and its optical imaging lens, by controlling the thin portion structure of two each lens of lens and/or the design of refractive index, to maintain favorable optical performance, and effectively shorten lens length.

Although specifically show and introduced the present invention in conjunction with preferred embodiment; but those skilled in the art should be understood that; not departing from the spirit and scope of the present invention that appended claims limits; can make a variety of changes the present invention in the form and details, be protection scope of the present invention.

Claims

1. an optical imaging lens, each lens all have one towards thing side and make thing side that imaging light passes through and one towards as side and picture side that imaging light is passed through, by thing side to comprising as side:

One is positioned at optical axis near zone in thing side and has the first lens of a convex surface part;

One is being positioned at circumference near zone and has the second lens of a convex surface part as side;

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

1.1≤TTL/ALT≤5.8；

Wherein, TTL is the total length to imaging surface by first lens thing side; ALT is the sum total of the lens thickness of first lens to the second lens on optical axis.

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

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

TTL/Gaa≤23.3；

Wherein, Gaa be first lens as the clearance between lens thing side, side to the second sum total on optical axis.

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

1.1≤ALT/T2≤3.0；

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

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

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

ALT/G12≥1.2；

Wherein, G12 be first lens as lens thing side, side to the second distance on optical axis.

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

TTL/G2F≥5.0；

Wherein, G2F is that the second lens are as the distance of side to infrared filter thing side on optical axis.

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

9. optical imaging lens as claimed in claim 1, is characterized in that: this first lens has a convex surface part being positioned at optical axis near zone as side, and this first lens has a convex surface part being positioned at circumference near zone as side.

10. optical imaging lens as claimed in claim 1, is characterized in that: this optical imaging lens meets following conditional:

ALT/Gaa≥1.2；

11. optical imaging lens as claimed in claim 1, is characterized in that: this optical imaging lens meets following conditional:

BFL/G12≥0.8；

Wherein, BFL be the second lens as side to imaging surface the length on optical axis, G12 be first lens as lens thing side, side to the second distance on optical axis.

12. optical imaging lens as claimed in claim 1, is characterized in that: this optical imaging lens meets following conditional:

TTL/T2≥2.3；

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

13. optical imaging lens as claimed in claim 1, is characterized in that: this optical imaging lens meets following conditional:

TTL/T1≥2.4；

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

14. optical imaging lens as claimed in claim 1, is characterized in that: this optical imaging lens meets following conditional:

BFL/T1≥0.7；

Wherein, BFL be the second lens as side to imaging surface the length on optical axis; T1 is the thickness of first lens on optical axis.

15. optical imaging lens as claimed in claim 1, is characterized in that: this optical imaging lens meets following conditional:

ALT/G2F≥2.3；

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

ALT/T1≥1.3；

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

17. optical imaging lens as claimed in claim 1, is characterized in that: this optical imaging lens meets following conditional:

BFL/T2≥0.8；

Wherein, BFL be the second lens as side to imaging surface the length on optical axis, T2 is the thickness of the second lens on optical axis.

18. optical imaging lens as claimed in claim 1, is characterized in that: this optical imaging lens meets following conditional:

TTL/BFL≥1.9；

Wherein, BFL be the second lens as side to imaging surface the length on optical axis.

19. optical imaging lens as claimed in claim 1, is characterized in that: this optical imaging lens meets following conditional:

Gaa/T1≥0.2；

Wherein, Gaa be first lens as the clearance between lens thing side, side to the second sum total on optical axis, T1 is the thickness of first lens on optical axis.

20. 1 kinds of electronic installations, comprise:

A casing; And

An image module, be mounted in this casing, and comprise an optical imaging lens as described in any one in 1 to the 19th of claim the, one for the lens barrel that arranges for this optical imaging lens, one for the module back seat unit arranging for this lens barrel, a substrate for arranging for this module back seat unit, an and image sensor that is arranged at this substrate and is positioned at this optical imaging lens head portrait side.