CN205861995U - Imaging lens device and portable set - Google Patents

Abstract

It relates to imaging lens device and portable set.A kind of imaging lens device, described imaging lens device has optical axis, described imaging lens device includes first lens assembly with positive refractive power according to the order from object side to image-side, this first lens assembly has smooth object side surface and image-side surface, and this image-side surface with optical axis intersection is convex at it；There is the second lens assembly of positive refractive power, and there are the three-lens parts of positive refractive power.

Description

Imaging lens device and portable set

Technical field

Embodiment of the present utility model relates to the field including the camera lens of aspheric surface；And more particularly, to tool There is the camera lens of three lens assemblies.

Background technology

The appearance of small-sized movable multipurpose plant (such as smart mobile phone, tablet device and portable computer) causes needing height The little form factor photographing unit of resolution is integrated in a device.Especially, need can be used on and be likely less than in the thick thin equipment of 8mm Photographing unit.Desirable to provide a kind of high-performance camera lens, this camera lens can be used for may be in the thin equipment of camera lens offer little space Little form factor camera.

Utility model content

In one aspect, disclosing a kind of imaging lens device, described imaging lens device has optical axis, described imaging lens Head unit includes first lens assembly with positive refractive power, this first lens assembly according to the order from object side to image-side Having smooth object side surface and image-side surface, this image-side surface with optical axis intersection is convex at it；Have and just roll over Second lens assembly of luminous power, and there are the three-lens parts of positive refractive power.

According to embodiment, the second lens assembly has object side surface and image-side surface, this object side surface its with Optical axis intersection is recessed, and this image-side surface with optical axis intersection is convex at it.

According to embodiment, three-lens parts have object side surface and image-side surface, this object side surface its with Optical axis intersection is convex, and this image-side surface with optical axis intersection is recessed at it.

According to embodiment, each in the first lens assembly, the second lens assembly and three-lens parts is by reflecting The single transparent block of material is formed, and all three lens assembly has identical refractive index and Abbe number.

According to embodiment, the image-side surface of the first lens assembly is non-spherical surface.

According to embodiment, the second lens assembly and the image-side surface of three-lens parts and object side surface are aspheric surface Surface.

According to embodiment, f is the focal length of optical imaging lens head unit, f₁It is the focal length of the first lens assembly, and meets pass System: 0.19 < f/f₁<0.20。

According to embodiment, f₂It is the focal length of the second lens assembly, and meets relation: 0.24 < f/f₂<0.25。

According to embodiment, f₃It is the focal length of three-lens parts, and meets relation: 0.49 < f/f₃<0.50。

On the other hand, disclosing a kind of portable set, this portable set includes shell；And it is integrated in described shell Internal digital camera, this digital camera has optical imaging lens head unit, and described optical imaging lens head unit has light Axle, described imaging lens device includes first lens assembly with positive refractive power according to the order from object side to image-side, This first lens assembly has smooth object side surface and image-side surface, this image-side surface at it with optical axis intersection For convex；There is the second lens assembly of positive refractive power；And there are the three-lens parts of positive refractive power.

According to embodiment, the second lens assembly has object side surface and image-side surface, this object side surface its with Optical axis intersection is recessed, and this image-side surface with optical axis intersection is convex at it.

According to embodiment, three-lens parts have object side surface and image-side surface, this object side surface its with Optical axis intersection is convex, and this image-side surface with optical axis intersection is recessed at it.

According to embodiment, each in the first lens assembly, the second lens assembly and three-lens parts is by reflecting The single transparent block of material is formed, and all three lens assembly has identical refractive index and Abbe number.

According to embodiment, the image-side surface of the first lens assembly is non-spherical surface.

According to embodiment, the second lens assembly and the image-side surface of three-lens parts and object side surface are aspheric surface Surface.

According to embodiment, f is the focal length of optical imaging lens head unit, f₁It is the focal length of the first lens assembly, and meets pass System: 0.19 < f/f₁<0.38。

According to embodiment, f₂It is the focal length of the second lens assembly, and meets relation: 0.24 < f/f₂<0.54。

According to embodiment, f₃It is the focal length of three-lens parts, and meets relation: 0.06 < f/f₃<0.50。

According to embodiment, shell includes transparent panel, and the first lens assembly is formed a part for transparent panel.

According to embodiment, this portable set is the clam shell design with the lid including pedestal and be connected pivotally to pedestal Portable computer, and shell be lid a part.

In further aspect, disclosing a kind of imaging lens device, this imaging lens arrangement is according to from object side to image The order of side includes first lens member with positive refractive power, this first lens member have smooth object side surface and Image-side surface, this image-side surface with optical axis intersection is convex at it；Having the second lens member of positive refractive power, this is years old Two lens member have object side surface and image-side surface, and this object side surface with optical axis intersection is recessed at it, this figure Surface, image side with optical axis intersection is convex at it；And there is the three-lens element of positive refractive power, this three-lens element has Having object side surface and image-side surface, this object side surface with optical axis intersection is convex at it, and this image-side surface is at it It is recessed with optical axis intersection；Wherein, the first lens member, the second lens member and three-lens element are by having identical folding The material penetrating rate and Abbe number is formed；Wherein, the image-side surface of the first lens member and the second lens member and three-lens The image-side surface of element and object side surface are non-spherical surface.

Disclose a kind of optical imaging lens head unit with three lens assemblies.All lens assemblies can have just to be rolled over Luminous power.First object side lens assembly has smooth object side surface.Remaining refractive surface can be aspheric.Second He Three-lens element can have meniscus shape.All three lens assembly can have identical refractive index and Abbe number.

From accompanying drawing and detailed description below, other feature and advantage of current utility model are by obvious.

Accompanying drawing explanation

By with reference to the following description for exemplarily and without limitation illustrating embodiment of the present utility model and Accompanying drawing, can be best understood this utility model.In the accompanying drawings, similar reference numerals represents similar element, wherein:

Fig. 1 is the sectional view of the first example embodiment of the lens system including three refractive lens elements；

Fig. 2 is the perspective view of the portable set being internally integrated camera module；

Fig. 3 is the perspective view of another portable set being internally integrated another camera module；

Fig. 4 shows a part for the lamella lucida of the equipment shown in Fig. 3 and the side view of camera module；

Fig. 5 is the sectional view of the second example embodiment of the lens system including three refractive lens elements.

Detailed description of the invention

This application claims the rights and interests of U.S. Provisional Patent Application No.62/235,391 of JIUYUE in 2015 submission on the 30th；This Shen Please require the rights and interests of the submission date of this provisional application according to 35U.S.C. § 119 (e), and be incorporated into by entirety by quoting This.

In the following description, many concrete details are elaborated.However, it should be understood that embodiment of the present utility model also Can realize in the case of there is no these details.In other examples, in order to make the understanding to describing the most obscure, known Structure and technology there is no detail display.

In the following description, with reference to the accompanying drawing illustrating several embodiment of the present utility model.It should be understood that, it is possible to use its His embodiment, and mechanical composition, structure, electrically and operation can carried out in the case of the spirit and scope of the disclosure The amendment of aspect.Detailed description below is the most in a limiting sense, and the scope of the embodiment of current utility model is only by sending out The claim of the patent of cloth limits.

Term used herein is merely to describe specific embodiment rather than in order to limit this utility model.Herein, For convenience, it is possible to use space relative terms (such as " below ", " lower section ", " bottom ", " top ", " top ", etc. Deng) shown in figure a element or feature and additionally (one or more) element or the relation of feature are described.Should be understood that and remove Outside direction described in figure, space relative terms alsos attempt to contain the different directions of the equipment used or in operation.Such as, If the equipment in figure is reversed, then, the element being described as be in other elements or feature " below " or " lower section " will be determined To in other elements or feature " top ".So, exemplary term " lower section " can contain top orientation and lower section is orientated two Person.Equipment can be otherwise oriented (such as, 90-degree rotation or in the other direction), and relative the retouching in space used herein Predicate is the most correspondingly explained.

As used in the text, unless context provides different instructions, otherwise singulative " ", " one " and " being somebody's turn to do " It is also intended to include plural form.Should also be clear that term " comprises " and/or " including " specifies stated feature, step, behaviour Make, element and/or the existence of parts, but be not precluded from other features one or more, step, operation, element, parts and/ Or the existence of a combination thereof or interpolation.

It is applied to the term " optical axis " of camera lens or is called for short the rotation axes of symmetry of " axle " instruction camera lens.

Term " element " instruction being applied to camera lens has refractive material any single of two relative refractive surfaces Transparent block, these surfaces in the transversely layout of the optical axis of lens and separate along optical axis.

It is applied to the term " parts " of camera lens or instruction (1) has the list of refractive material of two relative refractive surfaces One transparent block, i.e. element, or instruction (2) along camera lens optical axis order arrange one group multiple such piece, these blocks Adjacent refractive surface or fully unitary contact, or parallel in the case of there is interval, the amplitude at this interval little to such an extent as to Do not consider in camera lens calculates.

When the center of circle image-side at refractive surface, the radius of refractive surface is expressed as positive number.When the center of circle is at refractive surface Object side time, the radius of refractive surface is expressed as negative.The objective-side refractive surface with positive radius is convex；Have negative half The objective-side refractive surface in footpath is recessed.The image-side refractive surface with positive radius is recessed；There is the image-side of negative radius Refractive surface is convex.It is applied to the term " convex " on camera lens surface and shows that this camera lens surface is convex on surface with optical axis intersection 's.The term " recessed " being applied to camera lens surface shows that this camera lens surface is recessed on surface and optical axis intersection.

The term " refractive power " being applied to camera lens indicates the degree that camera lens makes light be converging or diverging with near optical axis." just roll over Luminous power " it is to make light towards the refractive power of light bending shaft, i.e. converged light." negative refractive power " is to make bending of light away from optical axis, i.e. The refractive power of diverging light.

The term " aperture diaphragm " or abbreviation " diaphragm " instruction that are applied to camera lens determine the light beam chi by lens system Very little opening.

Term used herein " focal length " refers to effective focal length rather than front focal length, is not back focal length.

Describe the embodiment of compact lens barrel system for little form factor camera.Photographing unit can be at fractional pack chi Very little middle realization, still captures high-definition picture clearly simultaneously, and this makes the embodiment of photographing unit be suitable for such as mobile phone, Smart mobile phone, tablet computing device, portable computer, net book, notebook computer, subnotebook, super, monitoring sets Small-sized and/or the mobile multi-purpose way equipment such as standby.But, some aspects (such as, lens system and light-sensitive element) of photographing unit can To be exaggerated or minimized, in order to provide the photographing unit with greater or lesser Package size.Additionally, the enforcement of camera arrangement Example can be implemented as independent digital camera.Except static (single-frame capture) camera application, the enforcement of camera arrangement Example can also be suitable for video camera application.

Refractive lens parts can be made up of plastic material.In at least some embodiments, refractive lens element can be by Injection moulding plastics material forms.It is however possible to use other transparent optical materials.It is furthermore noted that in the presented embodiments, Different lens member can be by the material group with different optical characteristics (such as, different Abbe numbers and/or different refractivity) Become.

Photographing unit can also, but need not necessarily, including being placed in last lens assembly of lens system and photosensitive unit Infrared (IR) light filter between part.IR light filter can be made up of the material of such as glass.But it is also possible to use other materials Material.Noting, IR light filter has no effect on the effective focal length of lens system.It is furthermore noted that except parts illustrated and described herein Outside, photographing unit can also include miscellaneous part.

In the camera, lens system is being positioned at light-sensitive element surface or the formation of image planes (IP) place near it image.Far The picture size of place's object is the most proportional to the effective focal length (f) of lens system.Total path length (TTL) of lens system is The distance on optical axis (AX) between front summit and image plane at the thing side surface of first (thing side) lens assembly.

In the exemplary embodiment, lens system be configured to its effective focal length f for or about 0.56 millimeter (mm), F-value (coke ratio, or F-number) is or about 2.2, visual field (FOV) for or about 75 degree (but narrower or broader FOV can be realized), And always path length (TTL) is or about 1.1mm.

Note, focal distance f, F-value, and/or other parameters can scaled or adjust, with meet for other photographing unit systems The optics of system application, imaging and/or the various regulations of packaging constraint.The requirement for particular camera application can be designated as And/or the camera arrangement constraint that can change for different camera arrangements application include but not limited to focal distance f, effective hole Footpath, F-value, visual field (FOV), imaging performance requirement and packaging volume or dimension constraint.

In certain embodiments, lens system can also be equipped with focusing, and this focusing is for from unlimited distance (thing Body scene and camera distances>20 meters) to nearly object distance (<30mm), object scene is focused on.Such as, in some embodiments In, lens system described herein can be equipped with adjustable focus mechanism, and wherein lens system and/or the light-sensitive element at image planes can To be moved to for object scene being focused in less than the distance range of 30mm from more than 20 meters.

Although give numerical range herein, can be dynamically varied (such as, as one or more optical parametric Use adjustable aperture diaphragm and/or adjustable focus) adjustable photographing unit and the example of lens system, but, include therein The embodiment of the camera arrangement of optical parametric and other parameter values fixing (non-adjustable) lens system in the range of these Can also realize.

Fig. 1 shows the sectional view of three the refractive lens parts 101,102,103 for example embodiment.This example It is not intended to limit, and can change for the various parameters that lens system is given, and still obtain similar knot simultaneously Really.In lens system 110, each in three lens assembly 101-103 has a refractive power, and defines and have focal distance f Lens system.Three lens assemblies of lens system 110 are as follows along optical axis (AX) 112 arrangement from object side to image-side:

First lens assembly 101, has positive refractive power, focal distance f₁, smooth object side surface and convex image-side table Face；

Second lens assembly 102, has positive refractive power, focal distance f₂, recessed object side surface and convex image-side surface； And

Three-lens parts 103, there is positive refractive power, focal distance f₃, convex object side surface and recessed image-side surface.

First object side camera lens surface 121 (object side surface of the first lens assembly 101) is smooth (flat).Second With three-lens parts 102,103, there is positive falcate.Additionally, five bending camera lens surfaces at least one be aspheric surface 's.In shown example embodiment, all five bending camera lens surfaces are all aspheric.

Lens system 110 is in the surface of imageing sensor 118 or is formed about image.Cover material 116 (such as to cover Glass or IR-cut filter) can be placed between lens system 110 and imageing sensor 118.

Before the smooth object side surface 121 of lens system 110 can allow lens system to be installed in lens system Among the equipment that gap between portion and the surface being placed on lens system front is less.This can allow device height to be dropped Low.

With reference now to Fig. 2, it is shown that the perspective view of portable set 200, wherein it is integrated with and uses the camera lens of display in Fig. 1 The camera module of system.Equipment 200 can be kneetop computer or notebook computer in this case.Certainly, photograph Machine module alternately can be integrated in other kinds of portable set (such as smart mobile phone or panel computer), photographing unit Module can also be integrated into non-portable device (such as desktop personal computer, TV monitor), or any other is at Z- The electronic equipment that profile on direction of principal axis (Z-is high) is the shortest.

In the case of kneetop computer or notebook computer, equipment 200 can have display screen on shell, and shell can To be provided about the Z-high 204 of baffle plate 202. shell of display screen in 8mm or less scope, therefore it is particularly suitable for connecing in inside The high camera module in 6mm or less scope of the Z-that receives.Lens system described herein is suitable for creating and has high tight of little Z- Gather lens system.In Fig. 1, the front surface 121 of the lens system of display can with the surface of the face forward of baffle plate 202 substantially Concordant.

With reference now to Fig. 3, it is shown that the perspective view of another portable set 300, wherein it is integrated with use according to this practicality Another camera module 330 of the lens system of a novel embodiment.In this case, equipment 300 can be intelligence Energy mobile phone or panel computer, in the sense that using when expection is held by user's one hand, it is handheld device.Certainly, photographing unit mould Block 330 alternately can be integrated in other kinds of portable set, such as kneetop computer or notebook computer, it is also possible to It is integrated in non-portable device (such as desktop PC, TV monitor, or any other wheel on Z-direction of principal axis The electronic equipment that wide (Z-is high) is the shortest) in.

In the case of smart mobile phone or panel computer, equipment 300 has shell so that equipment can be as mobile electricity The cellular network radio communication circuit worked in telephone terminal or terminal station is integrated in this shell.Outside equipment can have as follows Shell, the Z-of shell is high in the scope of 8mm or less, is therefore particularly suitable for receiving Z-high wherein in 6mm or less scope Camera module.Lens system described herein is adapted to create has compact lens barrel system high for little Z-.

In certain embodiments, equipment 300 includes the shell with at least one transparent panel 320, this transparent panel 320 Define the outer surface of equipment.Camera module 330 can include the second lens assembly 302, three-lens parts 303, cover Cover material 316 and imageing sensor 318.Transparent panel 320 can include the first lens assembly of the moulding section as panel 301。

Fig. 4 shows a part and the side-looking of camera module 330 of the transparent panel 320 of the equipment 300 of display in Fig. 3 Figure.First lens assembly 301 is formed as a part for transparent panel 320, such as the transparent panel at formation the first lens assembly Two dotted lines between the front portion of this part, object side surface 321 and rear portion, image-side surface 322 show.It should be understood that Cross over and include that the region of the first lens assembly 301, transparent panel 320 are continuous print and uniform.Dotted line only shows the first camera lens The optical boundary of parts 301, is not to show the most appreciable any border in transparent panel 320.

Camera module 330 assembles with transparent panel 320 so that the first lens assembly 301 in panel with in module Second and three-lens parts 302,303 are directed at along optical axis 312, thus provide complete imaging optical system 310.

Fig. 5 shows the sectional view of three refractive lens parts 401,402,403 for the second example embodiment.This Example is not limited to, and can change for the various parameters that lens system is given, and the most still obtains similar Result.In lens system 410, each in three lens assembly 401-403 has a refractive power, and defines and have Jiao Lens system away from f.Three lens assemblies of lens system 410 arrange such as along optical axis (AX) 412 from object side to image-side Under:

First lens assembly 401, has positive refractive power, focal distance f₁, smooth object side surface and convex image-side table Face；

Second lens assembly 402, has positive refractive power, focal distance f₂, recessed object side surface and convex image-side surface； And

Three-lens parts 403, have positive refractive power, focal distance f₃, convex object side surface, and recessed image-side surface.

First object side camera lens surface 421 (object side surface of the first lens assembly 401) is smooth (flat).Second With three-lens parts 402,403, there is positive meniscus shape.Additionally, five bending camera lens surfaces at least one be aspheric surface 's.In the second shown example embodiment, all five bending camera lens surfaces are all aspheric.

Lens system 410 the surface of imageing sensor 418 or its be formed about image.Cover material 416 (such as, Cover glass or IR-cut filter) can be placed between lens system 410 and imageing sensor 418.

Before the smooth object side surface 421 of lens system 410 can allow lens system to be installed in lens system Among the equipment that gap between portion and the surface being placed on lens system front is less.This can allow device height to be dropped Low.

Table below provides and is described herein as and the various optics of the example lens system shown in Fig. 1 and Fig. 5 and physics The example value of parameter.Table 1A and table 1B provides the lens system as shown in Figure 1 with three lens assembly 101-103 The optical specifications of the example embodiment of 110.Table 2A and table 2B provides has three lens assembly 401-as shown in Figure 5 The optical specifications of the example embodiment of the lens system 410 of 403.

In the table, unless otherwise, the most all yardsticks are in terms of millimeter.Positive radius shows that the center of curvature is on surface Image-side.Negative radius shows the center of curvature object side on surface." INF " represents unlimited (using in optics)." ASP " indicates non- Spherical face, " FLT " indicates flat surfaces.Thickness (or interval) be from a surface and the intersection point of optical axis to next surface and The wheelbase of the intersection point of optical axis.Design wavelength represents the wavelength in the frequency band of imaging system.

For lens member, window, wafer substrates and the material of IR light filter, it is provided that the refractive index at helium d-line wavelength N_d, and relative to the d-line of hydrogen and the Abbe number V of C-line and F-line_d.Abbe number V_dCan be defined by the formula:

V_d=(N_d-1)/(N_F–N_C),

Wherein, N_FAnd N_CThe respectively value of the refractive index of the material at F and the C line of hydrogen.

Aspheric constants in reference table 1B, the aspheric that can provide description non-spherical surface is facial:

$Z=\frac{r^2}{1+\sqrt{1-(1+K)r^2}}+{\mathrm{Ar}}^4+{\mathrm{Br}}^6+{\mathrm{Cr}}^8+{\mathrm{Dr}}^{10}+{\mathrm{Er}}^{12}+{\mathrm{Fr}}^{14}$

Wherein Z is the sinking (for all embodiments, Z-axle and optical axis coincidence) on the surface being parallel to Z-axle；

K is the constant of the cone；And

A, B, C, D, E, and F are asphericity coefficient.

In the table, " E " represents exponent sign (exponentials of 10).

Note, following form gives the numerical value of the example embodiment of lens system.These numerical value are with citing Form is given, and is not meant to limit.Such as, one or more tables of one or more lens member in the exemplary embodiment The parameter of one or more parameters in face and the material of element can be endowed different numerical value, and can be still camera lens system System provides similar performance.Especially, it is noted that some numerical value in form can be exaggerated or minimized, in order to use and retouch herein The embodiment of the lens system stated realizes greater or lesser photographing unit.

It is furthermore noted that in each embodiment of the lens system shown in the table, the surface number (S of element_i) from thing First surface 0 at plane is listed to last surface 9 at image plane.The effective focal length of lens system is given by f.Mirror Total path length (TTL) of head system is at first parts L₁Object side surface and image plane between along optical axis away from From.Aperture diaphragm (AS) (not shown) can be placed on lens assembly L₁Front object side near, it may be determined that lens system Entrance pupil.The coke ratio of lens system or f-value are defined as lens system effective focal length f divided by entrance pupil diameter.IR filters Light device 118 can stop may destroy light-sensitive element or the infra-red radiation having a negative impact it, and can be configured to not F can be produced impact.

It is that 470 nanometers (nm)～650nm, reference wavelength are that the embodiment of lens system described herein contains spectral range Application in the visibility region of 555nm.Optical specifications in table below is described f-value on 470nm～650nm frequency spectrum High image quality is provided.

Three lens assembly L of example lens system₁, L₂, and L₃Can be listed in the table by its refractive index and Abbe number Plastic material composition.In at least some embodiments, plastic material can be used for lens assembly.All three lens assembly L₁, L₂, and L₃Can be made up of identical plastic material.These plastic materials allow lens system visible for lens assembly Aberration in region is optimised and corrects.

Lens assembly material can be chosen, and the refractive power distribution of lens assembly can be calculated, in order to meets effectively Focal distance f and filed curvature or the correction of Petzval sum.As shown in Table, the monochrome of optical aberration and colored change can be led to Cross and adjust the radius of curvature of lens assembly and asphericity coefficient or geometry and distance between axles reduces, in order to produce school Just very well and equilibrium Minimum Residual hangover poor.

Although some example embodiment have been described and have been illustrated in the accompanying drawings, it is still desirable to understand, these are implemented Example is only the explanation of wide in range utility model, is not the restriction to wide in range utility model, and this utility model is not limited to The ad hoc structure illustrated and describe and configuration, because those of ordinary skill in the art is it is contemplated that various other are revised.Therefore, Describe by as illustrative and not restrictive.

Table 1A

S_i: surface i

R_i: the radius of surface i

D_i: the distance along optical axis between surface i and surface i+1

N_d: relative to d-line, the refractive index of the material of 587.56nm

V_d: relative to the Abbe number of the material of d-line

f_l: the focal length of lens assembly at 555nm

Design wavelength: 650nm, 610nm, 555nm, 510nm, 470nm

Table 1B

The asphericity coefficient of the first example embodiment

Table 2A

S_i: surface i

R_i: the radius of surface i

D_i: the distance along optical axis between surface i and surface i+1

N_d: relative to d-line, the refractive index of the material of 587.56nm

V_d: relative to the Abbe number of the material of d-line

f_l: the focal length of lens assembly at 555nm

Design wavelength: 650nm, 610nm, 555nm, 510nm, 470nm

Table 2B

The asphericity coefficient of the second example embodiment

Claims (21)

1. an imaging lens device, it is characterised in that described imaging lens device has optical axis, described imaging lens device is pressed Include according to the order from object side to image-side:

Having the first lens assembly of positive refractive power, this first lens assembly has smooth object side surface and image-side table Face, this image-side surface with optical axis intersection is convex at it；

There is the second lens assembly of positive refractive power, and

There are the three-lens parts of positive refractive power.

2. imaging lens device as claimed in claim 1, it is characterised in that the second lens assembly has object side surface and figure Surface, image side, this object side surface with optical axis intersection is recessed at it, and this image-side surface is convex in itself and optical axis intersection 's.

3. imaging lens device as claimed in claim 2, it is characterised in that three-lens parts have object side surface and figure Surface, image side, this object side surface with optical axis intersection is convex at it, and this image-side surface is recessed in itself and optical axis intersection 's.

4. imaging lens device as claimed in claim 1, it is characterised in that the first lens assembly, the second lens assembly and the Each in three-lens parts is formed by the single transparent block of refractive material, and all three lens assembly has identical Refractive index and Abbe number.

5. imaging lens device as claimed in claim 1, it is characterised in that the image-side surface of the first lens assembly is aspheric Surface, face.

6. imaging lens device as claimed in claim 5, it is characterised in that the second lens assembly and the figure of three-lens parts Surface, image side and object side surface are non-spherical surface.

7. imaging lens device as claimed in claim 1, it is characterised in that f is the focal length of optical imaging lens head unit, f₁For The focal length of the first lens assembly, and meet lower relation of plane:

0.19<f/f₁<0.20。

8. imaging lens device as claimed in claim 7, it is characterised in that f₂Be the focal length of the second lens assembly, and meet under Relation of plane:

0.24<f/f₂<0.25。

9. imaging lens device as claimed in claim 8, it is characterised in that f₃Be the focal length of three-lens parts, and meet under Relation of plane:

0.49<f/f₃<0.50。

10. a portable set, it is characterised in that including:

Shell；And

Being integrated in the digital camera of described enclosure, this digital camera has optical imaging lens head unit, described optics Imaging lens device has optical axis, and described imaging lens device includes according to the order from object side to image-side:

Having the first lens assembly of positive refractive power, this first lens assembly has smooth object side surface and image-side table Face, this image-side surface with optical axis intersection is convex at it；

There is the second lens assembly of positive refractive power；And

There are the three-lens parts of positive refractive power.

11. portable sets as claimed in claim 10, it is characterised in that the second lens assembly has object side surface and figure Surface, image side, this object side surface with optical axis intersection is recessed at it, and this image-side surface is convex in itself and optical axis intersection 's.

12. portable sets as claimed in claim 11, it is characterised in that three-lens parts have object side surface and figure Surface, image side, this object side surface with optical axis intersection is convex at it, and this image-side surface is recessed in itself and optical axis intersection 's.

13. portable sets as claimed in claim 10, it is characterised in that the first lens assembly, the second lens assembly and Each in three-lens parts is formed by the single transparent block of refractive material, and all three lens assembly has identical Refractive index and Abbe number.

14. portable sets as claimed in claim 10, it is characterised in that the image-side surface of the first lens assembly is aspheric Surface, face.

15. portable sets as claimed in claim 14, it is characterised in that the second lens assembly and the figure of three-lens parts Surface, image side and object side surface are non-spherical surface.

16. portable sets as claimed in claim 10, it is characterised in that f is the focal length of optical imaging lens head unit, f₁For The focal length of the first lens assembly, and meet lower relation of plane:

0.19<f/f₁<0.38。

17. portable sets as claimed in claim 10, it is characterised in that f₂Be the focal length of the second lens assembly, and meet under Relation of plane:

0.24<f/f₂<0.54。

18. portable sets as claimed in claim 17, it is characterised in that f₃Be the focal length of three-lens parts, and meet under Relation of plane:

0.06<f/f₃<0.50。

19. portable sets as claimed in claim 10, it is characterised in that shell includes transparent panel, and the first camera lens part Part is formed a part for transparent panel.

20. portable sets as claimed in claim 10, it is characterised in that this portable set includes pedestal and pivot for having It is connected to the portable computer of the clam shell design of the lid of pedestal, and the part that shell is lid with turning.

21. 1 kinds of imaging lens devices, it is characterised in that include according to the order from object side to image-side:

Having the first lens member of positive refractive power, this first lens member has smooth object side surface and image-side table Face, this image-side surface with optical axis intersection is convex at it；

Having the second lens member of positive refractive power, this second lens member has object side surface and image-side surface, this thing Body side surface with optical axis intersection is recessed at it, and this image-side surface is convex at it with optical axis intersection；And

Having the three-lens element of positive refractive power, this three-lens element has object side surface and image-side surface, this thing Body side surface with optical axis intersection is convex at it, and this image-side surface is recessed at it with optical axis intersection；

Wherein, the first lens member, the second lens member and three-lens element are by the material with identical refractive index and Abbe number Material is formed；

Wherein, the image-side surface of the first lens member and the second lens member and the image-side surface of three-lens element and thing Body side surface is non-spherical surface.