CN102375213B

CN102375213B - Photographic optical lens group

Info

Publication number: CN102375213B
Application number: CN 201010250962
Authority: CN
Inventors: 汤相岐; 陈俊杉; 黄歆璇
Original assignee: Largan Precision Co Ltd
Current assignee: Largan Precision Co Ltd
Priority date: 2010-08-10
Filing date: 2010-08-10
Publication date: 2013-05-15
Anticipated expiration: 2030-08-10
Also published as: CN102375213A

Abstract

The invention discloses a photographic optical lens group which comprises the following parts from an object side to an image side: a first lens with positive refracting power, wherein an object side surface of the first lens is a convex surface; a second lens with negative refracting power, wherein both an object side surface and an image side surface of the second lens are recessed surfaces; a third lens with positive refracting power, wherein an object side surface of the third lens is a recessed surface and an image side surface of the third lens is a convex surface; a fourth lens, wherein both an object side surface and an image side surface of the fourth lens are aspheric surfaces. The photographic optical lens group also is provided with an aperture and an electrical sensor. The aperture is provided between a shot object and the first lens. The electrical sensor is provided at an imaging surface part for image formation of the shot object, and a quantity of lenses with negative refracting power in the photographic optical lens group is four. Through a configuration mode of the above lens group, a lens volume can be effectively reduced, and high image interpreting power is obtained.

Description

The photographic optical lens group

Technical field

The present invention relates to a kind of photographic optical lens group, particularly about a kind of miniaturization photographic optical lens group that is applied on electronic product.

Background technology

in recent years, flourish along with the miniaturization phtographic lens, the demand of minisize image acquisition module day by day improves, and the photo-sensitive cell of general phtographic lens is nothing more than being sensitization coupling element (Charge CoupledDevice, CCD) or CMOS element (Complementary Metal-OxideSemiconductor Sensor, CMOS Sensor) two kinds, and along with progressing greatly of semiconductor fabrication process technology, make the Pixel Dimensions of photo-sensitive cell dwindle, add electronic product now take the good and compact external form of function as development trend, therefore, the miniaturization phtographic lens that possesses good image quality becomes main flow in the market.

Existing high resolution miniaturization phtographic lens, the lens combination that adopt four pieces of formulas more, wherein, first lens and the second lens are often bonded to each other with two pieces of glass spherical mirrors and become doublet (Doublet), in order to color difference eliminating, as United States Patent (USP) the 7th, shown in 365, No. 920, but the method has its shortcoming, one, too much spherical mirror configuration makes degree of freedom in system not enough, causes the optics total length of system to be difficult for shortening, and they are two years old, the bonding manufacture craft of glass mirror is difficult for, and causes the difficulty in manufacturing.In view of this, be badly in need of a kind ofly possessing small size, high-quality, and the easy photographic optical lens group of manufacture craft.

Summary of the invention

the invention provides a kind of photographic optical lens group, extremely sequentially comprised as side by the thing side: the first lens of a positive refracting power of tool, its thing side surface is convex surface, the second lens of the negative refracting power of one tool, its thing side surface is concave surface and is concave surface as side surface, the 3rd lens of the one positive refracting power of tool, its thing side surface are concave surface and are convex surface as side surface, and the 4th lens of the negative refracting power of a tool, it is concave surface as side surface, and the thing side surface of the 4th lens and be all aspheric surface as side surface, wherein, this photographic optical lens group separately is provided with an aperture and a sense electronics optical element, this aperture is arranged between object and this first lens, and this sense electronics optical element is arranged at the imaging of imaging surface place's confession object, and in this photographic optical lens group, the lens of tool refracting power are 4, the focal length of whole photographic optical lens group is f, the focal length of the 3rd lens is f3, the focal length of the 4th lens is f4, the thing side surface radius-of-curvature of this first lens is R1, the thing side surface radius-of-curvature of the 3rd lens is R5, the thing side surface of this first lens to the distance on optical axis as side surface of these the second lens is Dr1r4, the thickness of the 3rd lens on optical axis is CT3, this aperture to this sense electronics optical element is SL in the distance on optical axis (comprising the picture side surface of the 4th lens to the equivalent air conversion distance [Air Conversion Distance] between this sense electronics optical element), the thing side surface of this first lens to this sense electronics optical element is TTL in the distance on optical axis (comprising the picture side surface of the 4th lens to the equivalent air conversion distance between this sense electronics optical element), satisfy following relationship :-0.60＜R5/f＜-0.20, 0.35＜f3/f＜0.91,-0.83＜f4/f＜-0.40, 1.00＜Dr1r4/CT3＜1.75, 0.20＜R1/f＜0.41, and 0.9＜SL/TTL＜1.1.

On the other hand, the invention provides a kind of photographic optical lens group, extremely sequentially comprised as side by the thing side: the first lens of a positive refracting power of tool, its thing side surface is convex surface; The second lens of the negative refracting power of one tool, its thing side surface is concave surface and is concave surface as side surface; The 3rd lens of the one positive refracting power of tool, its thing side surface are concave surface and are convex surface as side surface; And the 4th lens of the negative refracting power of a tool, it is concave surface as side surface, and the thing side surface of the 4th lens and be all aspheric surface as side surface; Wherein, in this photographic optical lens group, the lens of tool refracting power are 4; The focal length of whole photographic optical lens group is f, the focal length of the 3rd lens is f3, the focal length of the 4th lens is f4, the thing side surface radius-of-curvature of these the second lens is R3, the thing side surface radius-of-curvature of the 3rd lens is R5, the 3rd lens be R6 as the side surface radius-of-curvature, this first lens and the spacing distance of these the second lens on optical axis are T12, satisfy following relationship :-18.0＜R3/f＜-2.5; 0.35＜f3/f＜0.91;-0.83＜f4/f＜-0.40; 2.25＜(R5+R6)/(R5-R6)＜5.00; And 0.5＜(T12/f) * 100＜4.0.

again on the other hand, the invention provides a kind of photographic optical lens group, extremely sequentially comprised as side by the thing side: the first lens of a positive refracting power of tool, its thing side surface is convex surface, the second lens of the negative refracting power of one tool, its thing side surface is concave surface and is concave surface as side surface, the 3rd lens of the one positive refracting power of tool, its thing side surface are concave surface and are convex surface as side surface, and the thing side surface of the 3rd lens be provided with at least one point of inflexion as at least one surface in side surface, and the 4th lens of the negative refracting power of a tool, it is concave surface as side surface, and the 4th lens be provided with at least one point of inflexion as side surface, wherein, this photographic optical lens group separately is provided with an aperture and a sense electronics optical element, this aperture is arranged between object and this first lens, and this sense electronics optical element is arranged at the imaging of imaging surface place's confession object, and in this photographic optical lens group, the lens of tool refracting power are 4, the focal length of whole photographic optical lens group is f, the focal length of the 3rd lens is f3, the focal length of the 4th lens is f4, the thing side surface radius-of-curvature of this first lens is R1, this first lens be R2 as the side surface radius-of-curvature, the thing side surface radius-of-curvature of the 4th lens is R7, this aperture to this sense electronics optical element is SL in the distance on optical axis (comprising the picture side surface of the 4th lens to the equivalent air conversion distance between this sense electronics optical element), the thing side surface of this first lens to this sense electronics optical element is TTL in the distance on optical axis (comprising the picture side surface of the 4th lens to the equivalent air conversion distance between this sense electronics optical element), satisfy following relationship: | R1/R2|＜0.15, 0.35＜f3/f＜0.91,-0.83＜f4/f＜-0.40, | R7/f|＞3.0, and 0.9＜SL/TTL＜1.1.

The present invention can effectively dwindle the camera lens volume by the configuration mode of above-mentioned mirror group, and can obtain higher resolving power.

In photographic optical lens group of the present invention, the positive refracting power of this first lens tool provides the required part of system positive refracting power, helps to shorten the total length of this photographic optical lens group; This second lens tool is born refracting power, and the aberration that can be effectively the first lens of the positive refracting power of tool be produced is done revisal, can be conducive to the aberration of update the system simultaneously; The 3rd positive refracting power of lens tool can effectively distribute the refracting power of this first lens, to reduce the susceptibility of system; The 4th lens tool is born refracting power, can make the principal point (Principal Point) of this photographic optical lens group away from imaging surface, is conducive to shorten the optics total length of system, to keep the miniaturization of camera lens.

In photographic optical lens group of the present invention, this aperture can be placed between object and this first lens or this first lens and this second lens between.provide positive refracting power by this first lens and the 3rd lens, and aperture is placed in object side near this photographic optical lens group, can effectively shorten the total length of this photographic optical lens group, in addition, above-mentioned configuration can make the outgoing pupil (Exit Pupil) of this photographic optical lens group away from imaging surface, therefore, light will be incident in the mode near vertical incidence on photo-sensitive cell, this is the heart far away (Telecentric) characteristic of picture side, heart characteristic far away is very important for the photoperceptivity of solid-state electronic photo-sensitive cell at present, it will make the sensitization susceptibility of sense electronics optical element improve, the minimizing system produces the possibility at dark angle, in addition, can be provided with the point of inflexion on the 3rd lens or the 4th lens, can more effectively suppress from the light of axle visual field and be incident on angle on photo-sensitive cell, and the further aberration of modified off-axis visual field, in addition, aperture is placed near this second lens place, can do correction to distorting (Distortion) and multiplying power look receipts poor (Chromatic Aberration of Magnification), more can shorten the camera lens total length and reduce between system sensitivity and obtain good balance.Therefore photographic optical lens group of the present invention can be arranged at aperture between object and this second lens, it is conducive to obtain good balance between heart characteristic far away and desensitising, be preferably aperture is arranged between object and this first lens, can help the heart characteristic far away of strengthening system, and can make the total length of whole photographic optical lens group shorter.

In photographic optical lens group of the present invention, the thing side surface of this first lens is convex surface and when being convex surface as side surface, can effectively strengthen the refracting power configuration of this first lens, and then make the optics total length of this optical mirror slip group become shorter.When the thing side surface of this first lens is convex surface and when being concave surface as side surface, comparatively favourable for the astigmatism (Astigmatism) of update the system, help the image quality of Hoisting System.The thing side surface of these the second lens is concave surface and when being concave surface as side surface, the effectively Petzval of update the system and number (Petzval Sum), and can increase the back focal length of system, have enough back focal length can place other member to guarantee this photographic optical lens group.The thing side surface of the 3rd lens is concave surface and when being convex surface as side surface, can help the astigmatism of update the system.The thing side surface of the 4th lens is concave surface and when being concave surface as side surface, can make the principal point of optical system further from imaging surface, is conducive to shorten the optics total length of system, to promote the miniaturization of camera lens.When the thing side surface of the 4th lens is convex surface and is concave surface as side surface, can help astigmatism and the higher order aberratons of update the system.

Description of drawings

Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, does not consist of limitation of the invention.In the accompanying drawings:

Figure 1A is the optical system schematic diagram of first embodiment of the invention;

Figure 1B is the aberration curve figure of first embodiment of the invention;

Fig. 2 A is the optical system schematic diagram of second embodiment of the invention;

Fig. 2 B is the aberration curve figure of second embodiment of the invention;

Fig. 3 A is the optical system schematic diagram of third embodiment of the invention;

Fig. 3 B is the aberration curve figure of third embodiment of the invention;

Fig. 4 A is the optical system schematic diagram of fourth embodiment of the invention;

Fig. 4 B is the aberration curve figure of fourth embodiment of the invention;

Fig. 5 A is the optical system schematic diagram of fifth embodiment of the invention;

Fig. 5 B is the aberration curve figure of fifth embodiment of the invention;

Fig. 6 A is the optical system schematic diagram of sixth embodiment of the invention;

Fig. 6 B is the aberration curve figure of sixth embodiment of the invention;

Fig. 7 is table one, is the optical data of first embodiment of the invention;

Fig. 8 is table two, is the aspherical surface data of first embodiment of the invention;

Fig. 9 is table three, is the optical data of second embodiment of the invention;

Figure 10 is table four, is the aspherical surface data of second embodiment of the invention;

Figure 11 is table five, is the optical data of third embodiment of the invention;

Figure 12 A and Figure 12 B are table six, are the aspherical surface data of third embodiment of the invention;

Figure 13 is table seven, is the optical data of fourth embodiment of the invention;

Figure 14 is table eight, is the aspherical surface data of fourth embodiment of the invention;

Figure 15 is table nine, is the optical data of fifth embodiment of the invention;

Figure 16 is table ten, is the aspherical surface data of fifth embodiment of the invention;

Figure 17 is table ten one, is the optical data of sixth embodiment of the invention;

Figure 18 is table ten two, is the aspherical surface data of sixth embodiment of the invention;

Figure 19 is table ten three, is the numeric data of the present invention's the first to the 6th embodiment correlationship formula.

Drawing reference numeral:

Aperture 100,200,300,400,500,600

First lens 110,210,310,410,510,610

Thing side surface 111,211,311,411,511,611

Picture side surface 112,212,312,412,512,612

The second lens 120,220,320,420,520,620

Thing side surface 121,221,321,421,521,621

Picture side surface 122,222,322,422,522,622

The 3rd lens 130,230,330,430,530,630

Thing side surface 131,231,331,431,531,631

Picture side surface 132,232,332,432,532,632

The 4th lens 140,240,340,440,540,640

Thing side surface 141,241,341,441,541,641

Picture side surface 142,242,342,442,542,642

Infrared ray filtering optical filter 150,250,350,450,550,650

Imaging surface 160,260,360,460,560,660

Cover glass 170,470,570,670

The focal length of whole photographic optical lens group is f

The focal length of first lens is f1

The focal length of the 3rd lens is f3

The focal length of the 4th lens is f4

The abbe number of first lens is V1

The abbe number of the second lens is V2

The thing side surface radius-of-curvature of first lens is R1

First lens be R2 as the side surface radius-of-curvature

The thing side surface radius-of-curvature of the second lens is R3

The thing side surface radius-of-curvature of the 3rd lens is R5

The 3rd lens be R6 as the side surface radius-of-curvature

The thing side surface radius-of-curvature of the 4th lens is R7

The thickness of the 3rd lens on optical axis is CT3

First lens and the spacing distance of the second lens on optical axis are T12

The distance on optical axis as side surface of thing side surface to the second lens of first lens is Dr1r4

Aperture to sense electronics optical element is SL in the distance on optical axis (comprising the picture side surface of the 4th lens to the equivalent air conversion distance between the sense electronics optical element)

The thing side surface of first lens to sense electronics optical element is TTL in the distance on optical axis (comprising the picture side surface of the 4th lens to the equivalent air conversion distance between the sense electronics optical element)

Half of sense electronics optical element effective pixel area diagonal line length is ImgH

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the embodiment of the present invention is described in further details.At this, illustrative examples of the present invention and explanation thereof are used for explanation the present invention, but not as a limitation of the invention.

the invention provides a kind of photographic optical lens group, extremely sequentially comprised as side by the thing side: the first lens of a positive refracting power of tool, its thing side surface is convex surface, the second lens of the negative refracting power of one tool, its thing side surface is concave surface and is concave surface as side surface, the 3rd lens of the one positive refracting power of tool, its thing side surface are concave surface and are convex surface as side surface, and the 4th lens of the negative refracting power of a tool, it is concave surface as side surface, and the thing side surface of the 4th lens and be all aspheric surface as side surface, wherein, this photographic optical lens group separately is provided with an aperture and a sense electronics optical element, this aperture is arranged between object and this first lens, and this sense electronics optical element is arranged at the imaging of imaging surface place's confession object, and in this photographic optical lens group, the lens of tool refracting power are 4, the focal length of whole photographic optical lens group is f, the focal length of the 3rd lens is f3, the focal length of the 4th lens is f4, the thing side surface radius-of-curvature of this first lens is R1, the thing side surface radius-of-curvature of the 3rd lens is R5, the thing side surface of this first lens to the distance on optical axis as side surface of these the second lens is Dr1r4, the thickness of the 3rd lens on optical axis is CT3, this aperture to the distance of this sense electronics optical element on optical axis is SL, the thing side surface of this first lens to the distance of this sense electronics optical element on optical axis is TTL, satisfy following relationship :-0.60＜R5/f＜-0.20, 0.35＜f3/f＜0.91,-0.83＜f4/f＜-0.40, 1.00＜Dr1r4/CT3＜1.75, 0.20＜R1/f＜0.41, and 0.9＜SL/TTL＜1.1.

When aforementioned photographic optical lens group satisfies following relationship :-0.60＜R5/f＜-0.20, the suitable curvature of the 3rd lens thing side surface can be provided, be beneficial to the update the system marginal ray, and then reduce astigmatism and produce; Preferably, satisfy following relationship :-0.55＜R5/f＜-0.40.

When aforementioned photographic optical lens group satisfies following relationship: 0.35＜f3/f＜0.91, effectively the required positive refracting power of distribution system, avoid the refracting power of single lens excessive, and then effectively reduce the susceptibility of system; Preferably, satisfy following relationship: 0.45＜f3/f＜0.77.

When aforementioned photographic optical lens group satisfies following relationship :-0.83＜f4/f＜-0.40, can effectively revise the aberration that the 3rd lens produce, with the Hoisting System image quality; Preferably, satisfy following relationship :-0.77＜f4/f＜-0.45.

When aforementioned photographic optical lens group satisfies following relationship: 1.00＜Dr1r4/CT3＜1.75, can effectively distribute the space of this photographic optical lens group to configure, to help the Hoisting System image quality.

When aforementioned photographic optical lens group satisfies following relationship: 0.20＜R1/f＜0.41, can guarantee that this first lens provides system enough refracting powers, and avoid aberration excessively to increase.

When aforementioned photographic optical lens group satisfies following relationship: 0.9＜SL/TTL＜1.1 can help the heart characteristic far away of strengthening system, and can make the total length of whole photographic optical lens group shorter.

In the aforementioned photographic optical lens group of the present invention, preferably, the material of these the second lens is plastic cement, and the lens of plastic cement material not only are conducive to the making of non-spherical lens, more can effectively reduce production costs.

In the aforementioned photographic optical lens group of the present invention, preferably, the thing side surface of the 4th lens is concave surface, when the thing side surface of the 4th lens and when being all concave surface as side surface, can make the principal point of optical system further from imaging surface, be conducive to shorten the optics total length of system, to promote the miniaturization of camera lens.

In the aforementioned photographic optical lens group of the present invention, preferably, have each other air clearance between four pieces of lens in system, the configuration of air clearance can avoid the aspherical lens group to produce interference between minute surface immediately, and reduces the difficulty in assembling.

In the aforementioned photographic optical lens group of the present invention, preferably, the thing side surface radius-of-curvature of these the second lens is R3, and the focal length of whole photographic optical lens group is f, satisfies following relationship :-18.0＜R3/f＜-2.5.When R3/f satisfied the above-mentioned relation formula, effectively the Petzval of update the system and number (Petzval Sum), made peripheral image planes become more flat, with the Hoisting System image quality.

In the aforementioned photographic optical lens group of the present invention, preferably, the thing side surface radius-of-curvature of the 4th lens is R7, and the focal length of whole photographic optical lens group is f, satisfies following relationship: | R7/f|＞1.3.When | when R7/f| satisfies the above-mentioned relation formula, the generation of system aberration can be avoided, further the higher order aberratons that the 3rd lens produce can be revised.

In the aforementioned photographic optical lens group of the present invention, preferably, the focal length of the 3rd lens is f3, and the focal length of the 4th lens is f4, satisfies following relationship: 0.9＜| f3/f4|＜1.1.When | when f3/f4| satisfies the above-mentioned relation formula, can guarantee the configuration balance of the 3rd lens and the 4th lens refracting power, to avoid producing too much aberration.

In the aforementioned photographic optical lens group of the present invention, the thing side surface radius-of-curvature of the 3rd lens is R5, the 3rd lens be R6 as the side surface radius-of-curvature, preferably, satisfy following relationship: 2.25＜(R5+R6)/(R5-R6)＜5.00.When (R5+R6)/(R5-R6) satisfies the above-mentioned relation formula, can be beneficial to the astigmatism of revising this photographic optical lens group.

In the aforementioned photographic optical lens group of the present invention, the thing side surface of this first lens to the distance of this sense electronics optical element on optical axis is TTL, and half of this sense electronics optical element effective pixel area diagonal line length is ImgH, preferably, satisfies following relationship: TTL/ImgH＜1.8.When TTL/ImgH satisfies the above-mentioned relation formula, be conducive to keep the miniaturization of this photographic optical lens group, to be equipped on frivolous electronic product.

When aforementioned photographic optical lens group satisfies following relationship :-18.0＜R3/f＜-2.5, effectively the Petzval of update the system and number (Petzval Sum), make peripheral image planes become more flat, with the Hoisting System image quality.

When aforementioned photographic optical lens group satisfies following relationship: 2.25＜(R5+R6)/(R5-R6)＜5.00, can be beneficial to the astigmatism of revising this photographic optical lens group.

When aforementioned photographic optical lens group satisfies following relationship: 0.5＜(T12/f) * 100＜4.0, can guarantee to have between this first lens and this second lens enough spaces to carry out lens set vertical, make make obtain between feasibility and reduced volume well balanced.

In the aforementioned photographic optical lens group of the present invention, this aperture to the distance of this sense electronics optical element on optical axis is SL, the thing side surface of this first lens to the distance of this sense electronics optical element on optical axis is TTL, preferably, satisfies following relationship: 0.9＜SL/TTL＜1.1.When SL/TTL satisfies the above-mentioned relation formula, can help the heart characteristic far away of strengthening system, and can make the total length of whole photographic optical lens group shorter.

In the aforementioned photographic optical lens group of the present invention, the thing side surface radius-of-curvature of the 4th lens is R7, and the focal length of whole photographic optical lens group is f, preferably, satisfies following relationship: | R7/f|＞1.3.When | when R7/f| satisfies the above-mentioned relation formula, the generation of system aberration can be avoided, further the higher order aberratons that the 3rd lens produce can be revised.

In the aforementioned photographic optical lens group of the present invention, the thing side surface of this first lens to the distance on optical axis as side surface of these the second lens is Dr1r4, the thickness of the 3rd lens on optical axis is CT3, preferably, satisfies following relationship: 1.00＜Dr1r4/CT3＜1.75.When Dr1r4/CT3 satisfies the above-mentioned relation formula, can effectively distribute the space configuration of this photographic optical lens group, to help the Hoisting System image quality.

In the aforementioned photographic optical lens group of the present invention, the thing side surface radius-of-curvature of this first lens is R1, this first lens be R2 as the side surface radius-of-curvature, preferably, satisfy following relationship: | R1/R2|＜0.15.When | when R1/R2| satisfies the above-mentioned relation formula, can be conducive to the revisal of system's spherical aberration (Spherical Aberration).

In the aforementioned photographic optical lens group of the present invention, the focal length of the 3rd lens is f3, and the focal length of the 4th lens is f4, preferably, satisfies following relationship: 0.9＜| f3/f4|＜1.1.When | when f3/f4| satisfies the above-mentioned relation formula, can guarantee the configuration balance of the 3rd lens and the 4th lens refracting power, to avoid producing too much aberration.

Again on the other hand, the invention provides a kind of photographic optical lens group, extremely sequentially comprised as side by the thing side: the first lens of a positive refracting power of tool, its thing side surface is convex surface; The second lens of the negative refracting power of one tool, its thing side surface is concave surface and is concave surface as side surface; The 3rd lens of the one positive refracting power of tool, its thing side surface are concave surface and are convex surface as side surface, and the thing side surface of the 3rd lens be provided with at least one point of inflexion as at least one surface in side surface; And the 4th lens of the negative refracting power of a tool, it is concave surface as side surface, and the 4th lens be provided with at least one point of inflexion as side surface; Wherein, this photographic optical lens group separately is provided with an aperture and a sense electronics optical element, this aperture is arranged between object and this first lens, and this sense electronics optical element is arranged at the imaging of imaging surface place's confession object, and in this photographic optical lens group, the lens of tool refracting power are 4; The focal length of whole photographic optical lens group is f, the focal length of the 3rd lens is f3, the focal length of the 4th lens is f4, the thing side surface radius-of-curvature of this first lens is R1, this first lens be R2 as the side surface radius-of-curvature, the thing side surface radius-of-curvature of the 4th lens is R7, this aperture to the distance of this sense electronics optical element on optical axis is SL, the thing side surface of this first lens to the distance of this sense electronics optical element on optical axis is TTL, satisfies following relationship: | R1/R2|＜0.15; 0.35＜f3/f＜0.91;-0.83＜f4/f＜-0.40; | R7/f|＞3.0; And 0.9＜SL/TTL＜1.1.

When aforementioned photographic optical lens group satisfies following relationship: | R1/R2|＜0.15 can be conducive to the revisal of system's spherical aberration; Preferably, satisfy following relationship: | R1/R2|＜0.07.

When aforementioned photographic optical lens group satisfies following relationship :-0.83＜f4/f＜-0.40, can effectively revise the aberration that the 3rd lens produce, with the Hoisting System image quality.

When aforementioned photographic optical lens group satisfies following relationship: | R7/f|＞3.0, can avoid the generation of system aberration, further can revise the higher order aberratons that the 3rd lens produce.

In the aforementioned photographic optical lens group of the present invention, preferably, the material of this first lens is glass, if the lens material is glass, can increase the degree of freedom of system refracting power configuration, and glass material is conducive to system's opposing envirment factor and changes, make the imaging of optical systems quality comparatively stable.

In the aforementioned photographic optical lens group of the present invention, preferably the thing side surface of the 4th lens is concave surface, when the thing side surface of the 4th lens and when being all concave surface as side surface, can make the principal point of optical system further from imaging surface, be conducive to shorten the optics total length of system, to promote the miniaturization of camera lens.

In the aforementioned photographic optical lens group of the present invention, the abbe number of this first lens is V1, and the abbe number of these the second lens is V2, preferably, satisfies following relationship: 31.0＜V1-V2＜42.0.When V1-V2 satisfies the above-mentioned relation formula, can be conducive to the correction of aberration in this photographic optical lens group.

In the aforementioned photographic optical lens group of the present invention, this first lens and the spacing distance of these the second lens on optical axis are T12, and the focal length of whole photographic optical lens group is f, preferably, satisfies following relationship: 0.5＜(T12/f) * 100＜4.0.When (T12/f) * 100 satisfies the above-mentioned relation formula, can guarantee to have between this first lens and this second lens enough spaces to carry out lens set vertical, make make obtain between feasibility and reduced volume well balanced.

In photographic optical lens group of the present invention, the material of lens can be glass or plastic cement, if the material of lens is glass, can increase the degree of freedom of system's refracting power configuration, if the lens material is plastic cement, can effectively reduce production costs.In addition, aspheric surface can be set on minute surface, aspheric surface can easily be made into the shape beyond sphere, obtain more controlled variable, in order to subduing aberration, and then the number that uses of reduction lens, therefore can effectively reduce the total length of photographic optical lens group of the present invention.

In photographic optical lens group of the present invention, if lens surface is convex surface, represent that this lens surface is convex surface at paraxial place; If lens surface is concave surface, represent that this lens surface is concave surface at paraxial place.

Photographic optical lens group of the present invention will coordinate accompanying drawing to be described in detail by following specific embodiment.The first embodiment:

The schematic diagram of photographic optical lens group the first embodiment of the present invention sees also Figure 1A, and the aberration curve of the first embodiment sees also Figure 1B.The photographic optical lens group of the first embodiment mainly is made of four pieces of lens, is extremely sequentially comprised as side by the thing side:

The first lens 110 of the one positive refracting power of tool, its thing side surface 111 are that convex surface and picture side surface 112 are concave surface, and its material is plastic cement, the thing side surface 111 of this first lens 110 be all aspheric surface as side surface 112;

The second lens 120 of the negative refracting power of one tool, its thing side surface 121 be that concave surface and picture side surface 122 are concave surface, and its material is plastic cement, the thing side surface 121 of these the second lens 120 and be all aspheric surface as side surface 122;

The 3rd lens 130 of the one positive refracting power of tool, its thing side surface 131 is that concave surface and picture side surface 132 are convex surface, its material is plastic cement, the thing side surface 131 of the 3rd lens 130 be all aspheric surface as side surface 132, and the thing side surface 131 of the 3rd lens 130 be provided with at least one point of inflexion as at least a surface in side surface 132; And

The 4th lens 140 of the negative refracting power of one tool, its thing side surface 141 is that convex surface and picture side surface 142 are concave surface, its material is plastic cement, the thing side surface 141 of the 4th lens 140 be all aspheric surface as side surface 142, and the 4th lens 140 be provided with at least one point of inflexion as side surface 142;

Wherein, this photographic optical lens group separately is provided with an aperture 100 and is arranged between object and this first lens 110;

Separately include an infrared ray filtering optical filter (IR Filter) 150 and be placed in looking like between side surface 142 and an imaging surface 160 of the 4th lens 140; And a cover glass (Cover-glass) 170 is placed between this infrared ray filtering optical filter 150 and this imaging surface 160.The material of this infrared ray filtering optical filter 150 is that glass and its do not affect the focal length of photographic optical lens group of the present invention, and this photographic optical lens group separately arranges a sense electronics optical element at this imaging surface 160 places for object imaging thereon.

The equation of above-mentioned aspheric curve is expressed as follows:

X (Y) = (Y^{2} / R) / (1 + sqrt (1 - (1 + k) * {(Y / R)}^{2})) + \underset{i}{Σ} (Ai) * (Y^{i})

Wherein:

X: be the point of Y apart from optical axis on aspheric surface, itself and the relative height that is tangential on the tangent plane on summit on the aspheric surface optical axis;

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

K: conical surface coefficient;

Ai: i rank asphericity coefficient.

In the first embodiment photographic optical lens group, the focal length of whole photographic optical lens group is f, and its relational expression is: f=3.34 (millimeter).

In the first embodiment photographic optical lens group, the f-number of whole photographic optical lens group (f-number) is Fno, and its relational expression is: Fno=2.81.

In the first embodiment photographic optical lens group, in whole photographic optical lens group, half of maximum visual angle is HFOV, and its relational expression is: HFOV=34.0 (degree).

In the first embodiment photographic optical lens group, the abbe number of this first lens 110 is V1, and the abbe number of these the second lens 120 is V2, and its relational expression is: V1-V2=33.1.

In the first embodiment photographic optical lens group, this first lens 110 is T12 with the spacing distance of these the second lens 120 on optical axis, and the focal length of whole photographic optical lens group is f, and its relational expression is: (T12/f) * 100=3.83.

In the first embodiment photographic optical lens group, the thing side surface 111 of this first lens 110 is Dr1r4 to these the second lens 120 as the distance of side surface 122 on optical axis, the thickness of the 3rd lens 130 on optical axis is CT3, and its relational expression is: Dr1r4/CT3=1.46.

In the first embodiment photographic optical lens group, the thing side surface radius-of-curvature of this first lens 110 is R1, and the focal length of whole photographic optical lens group is f, and its relational expression is: R1/f=0.33.

In the first embodiment photographic optical lens group, the thing side surface radius-of-curvature of this first lens 110 is R1 and is R2 as the side surface radius-of-curvature, and its relational expression is: | R1/R2|=0.13.

In the first embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 3rd lens 130 is R5, the 3rd lens 130 be R6 as the side surface radius-of-curvature, its relational expression is: (R5+R6)/(R5-R6)=3.07.

In the first embodiment photographic optical lens group, the thing side surface radius-of-curvature of these the second lens 120 is R3, and the focal length of whole photographic optical lens group is f, and its relational expression is: R3/f=-14.97.

In the first embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 3rd lens 130 is R5, and the focal length of whole photographic optical lens group is f, and its relational expression is: R5/f=-0.50.

In the first embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 4th lens 140 is R7, and the focal length of whole photographic optical lens group is f, and its relational expression is: | R7/f|=2.03.

In the first embodiment photographic optical lens group, the focal length of the 3rd lens 130 is f3, and the focal length of whole photographic optical lens group is f, and its relational expression is: f3/f=0.74.

In the first embodiment photographic optical lens group, the focal length of the 4th lens 140 is f4, and the focal length of whole photographic optical lens group is f, and its relational expression is: f4/f=-0.74.

In the first embodiment photographic optical lens group, the focal length of the 3rd lens 130 is f3, and the focal length of the 4th lens 140 is f4, and its relational expression is: | f3/f4|=1.01.

In the aforementioned photographic optical lens group of the present invention, this aperture 100 is SL to the distance of this sense electronics optical element on optical axis, and the thing side surface 111 of this first lens 110 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.95.

In the first embodiment photographic optical lens group, the thing side surface 111 of this first lens 110 to the distance of this sense electronics optical element on optical axis is TTL, and half of this sense electronics optical element effective pixel area diagonal line length is ImgH, and its relational expression is: TTL/ImgH=1.68.

The detailed optical data of the first embodiment is as shown in Fig. 7 table one, and its aspherical surface data is as shown in Fig. 8 table two, and wherein the unit of radius-of-curvature, thickness and focal length is mm, and HFOV is defined as half of maximum visual angle.

The second embodiment:

The schematic diagram of photographic optical lens group the second embodiment of the present invention sees also Fig. 2 A, and the aberration curve of the second embodiment sees also Fig. 2 B.The photographic optical lens group of the second embodiment mainly is made of four pieces of lens, is extremely sequentially comprised as side by the thing side:

The first lens 210 of the one positive refracting power of tool, its thing side surface 211 are that convex surface and picture side surface 212 are convex surface, and its material is plastic cement, the thing side surface 211 of this first lens 210 be all aspheric surface as side surface 212;

The second lens 220 of the negative refracting power of one tool, its thing side surface 221 be that concave surface and picture side surface 222 are concave surface, and its material is plastic cement, the thing side surface 221 of these the second lens 220 and be all aspheric surface as side surface 222;

The 3rd lens 230 of the one positive refracting power of tool, its thing side surface 231 is that concave surface and picture side surface 232 are convex surface, its material is plastic cement, the thing side surface 231 of the 3rd lens 230 be all aspheric surface as side surface 232, and the thing side surface 231 of the 3rd lens 230 with as in side surface 232 one of at least the surface be provided with at least one point of inflexion; And

The 4th lens 240 of the negative refracting power of one tool, its thing side surface 241 is that concave surface and picture side surface 242 are concave surface, its material is plastic cement, the thing side surface 241 of the 4th lens 240 be all aspheric surface as side surface 242, and the 4th lens 240 be provided with at least one point of inflexion as side surface 242;

Wherein, this photographic optical lens group separately is provided with an aperture 200 and is arranged between object and this first lens 210;

Separately include an infrared ray filtering optical filter 250 and be placed in looking like between side surface 242 and an imaging surface 260 of the 4th lens 240.The material of this infrared ray filtering optical filter 250 is that glass and its do not affect the focal length of photographic optical lens group of the present invention, and this photographic optical lens group separately arranges a sense electronics optical element at this imaging surface 260 places for object imaging thereon.

The second equational expression of embodiment aspheric curve is as the form of the first embodiment.

In the second embodiment photographic optical lens group, the focal length of whole photographic optical lens group is f, and its relational expression is: f=3.05 (millimeter).

In the second embodiment photographic optical lens group, the f-number of whole photographic optical lens group is Fno, and its relational expression is: Fno=2.45.

In the second embodiment photographic optical lens group, in whole photographic optical lens group, half of maximum visual angle is HFOV, and its relational expression is: HFOV=37.0 (degree).

In the second embodiment photographic optical lens group, the abbe number of this first lens 210 is V1, and the abbe number of these the second lens 220 is V2, and its relational expression is: V1-V2=32.5.

In the second embodiment photographic optical lens group, this first lens 210 is T12 with the spacing distance of these the second lens 220 on optical axis, and the focal length of whole photographic optical lens group is f, and its relational expression is: (T12/f) * 100=1.64.

In the second embodiment photographic optical lens group, the thing side surface 211 of this first lens 210 is Dr1r4 to these the second lens 220 as the distance of side surface 222 on optical axis, the thickness of the 3rd lens 230 on optical axis is CT3, and its relational expression is: Dr1r4/CT3=1.64.

In the second embodiment photographic optical lens group, the thing side surface radius-of-curvature of this first lens 210 is R1, and the focal length of whole photographic optical lens group is f, and its relational expression is: R1/f=0.42.

In the second embodiment photographic optical lens group, the thing side surface radius-of-curvature of this first lens 210 is R1 and is R2 as the side surface radius-of-curvature, and its relational expression is: | R1/R2|=0.21.

In the second embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 3rd lens 230 is R5, the 3rd lens 230 be R6 as the side surface radius-of-curvature, its relational expression is: (R5+R6)/(R5-R6)=2.62.

In the second embodiment photographic optical lens group, the thing side surface radius-of-curvature of these the second lens 220 is R3, and the focal length of whole photographic optical lens group is f, and its relational expression is: R3/f=-2.88.

In the second embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 3rd lens 230 is R5, and the focal length of whole photographic optical lens group is f, and its relational expression is: R5/f=-0.48.

In the second embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 4th lens 240 is R7, and the focal length of whole photographic optical lens group is f, and its relational expression is: | R7/f|=32.79.

In the second embodiment photographic optical lens group, the focal length of the 3rd lens 230 is f3, and the focal length of whole photographic optical lens group is f, and its relational expression is: f3/f=0.59.

In the second embodiment photographic optical lens group, the focal length of the 4th lens 240 is f4, and the focal length of whole photographic optical lens group is f, and its relational expression is: f4/f=-0.58.

In the second embodiment photographic optical lens group, the focal length of the 3rd lens 230 is f3, and the focal length of the 4th lens 240 is f4, and its relational expression is: | f3/f4|=1.01.

In the aforementioned photographic optical lens group of the present invention, this aperture 200 is SL to the distance of this sense electronics optical element on optical axis, and the thing side surface 211 of this first lens 210 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.96.

In the second embodiment photographic optical lens group, the thing side surface 211 of this first lens 210 to the distance of this sense electronics optical element on optical axis is TTL, and half of this sense electronics optical element effective pixel area diagonal line length is ImgH, and its relational expression is: TTL/ImgH=1.57.

The detailed optical data of the second embodiment is as shown in Fig. 9 table three, and its aspherical surface data is as shown in Figure 10 table four, and wherein the unit of radius-of-curvature, thickness and focal length is mm, and HFOV is defined as half of maximum visual angle.

The 3rd embodiment:

The schematic diagram of photographic optical lens group the 3rd embodiment of the present invention sees also Fig. 3 A, and the aberration curve of the 3rd embodiment sees also Fig. 3 B.The photographic optical lens group of the 3rd embodiment mainly is made of four pieces of lens, is extremely sequentially comprised as side by the thing side:

The first lens 310 of the one positive refracting power of tool, its thing side surface 311 are that convex surface and picture side surface 312 are convex surface, and its material is plastic cement, the thing side surface 311 of this first lens 310 be all aspheric surface as side surface 312;

The second lens 320 of the negative refracting power of one tool, its thing side surface 321 be that concave surface and picture side surface 322 are concave surface, and its material is plastic cement, the thing side surface 321 of these the second lens 320 and be all aspheric surface as side surface 322;

The 3rd lens 330 of the one positive refracting power of tool, its thing side surface 331 are that concave surface and picture side surface 332 are convex surface, and its material is plastic cement, the thing side surface 331 of the 3rd lens 330 be all aspheric surface as side surface 332; And

The 4th lens 340 of the negative refracting power of one tool, its thing side surface 341 is that concave surface and picture side surface 342 are concave surface, its material is plastic cement, the thing side surface 341 of the 4th lens 340 be all aspheric surface as side surface 342, and the 4th lens 340 be provided with at least one point of inflexion as side surface 342;

Wherein, this photographic optical lens group separately is provided with an aperture 300 and is arranged between object and this first lens 310;

Separately include an infrared ray filtering optical filter 350 and be placed in looking like between side surface 342 and an imaging surface 360 of the 4th lens 340.The material of this infrared ray filtering optical filter 350 is that glass and its do not affect the focal length of photographic optical lens group of the present invention, and this photographic optical lens group separately arranges a sense electronics optical element at this imaging surface 360 places for object imaging thereon.

The 3rd equational expression of embodiment aspheric curve is as the form of the first embodiment.

In the 3rd embodiment photographic optical lens group, the focal length of whole photographic optical lens group is f, and its relational expression is: f=5.40 (millimeter).

In the 3rd embodiment photographic optical lens group, the f-number of whole photographic optical lens group is Fno, and its relational expression is: Fno=2.85.

In the 3rd embodiment photographic optical lens group, in whole photographic optical lens group, half of maximum visual angle is HFOV, and its relational expression is: HFOV=33.5 (degree).

In the 3rd embodiment photographic optical lens group, the abbe number of this first lens 310 is V1, and the abbe number of these the second lens 320 is V2, and its relational expression is: V1-V2=32.5.

In the 3rd embodiment photographic optical lens group, this first lens 310 is T12 with the spacing distance of these the second lens 320 on optical axis, and the focal length of whole photographic optical lens group is f, and its relational expression is: (T12/f) * 100=1.74.

In the 3rd embodiment photographic optical lens group, the thing side surface 311 of this first lens 310 is Dr1r4 to these the second lens 320 as the distance of side surface 322 on optical axis, the thickness of the 3rd lens 330 on optical axis is CT3, and its relational expression is: Dr1r4/CT3=1.31.

In the 3rd embodiment photographic optical lens group, the thing side surface radius-of-curvature of this first lens 310 is R1, and the focal length of whole photographic optical lens group is f, and its relational expression is: R1/f=0.35.

In the 3rd embodiment photographic optical lens group, the thing side surface radius-of-curvature of this first lens 310 is R1 and is R2 as the side surface radius-of-curvature, and its relational expression is: | R1/R2|=0.02.

In the 3rd embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 3rd lens 330 is R5, the 3rd lens 330 be R6 as the side surface radius-of-curvature, its relational expression is: (R5+R6)/(R5-R6)=2.27.

In the 3rd embodiment photographic optical lens group, the thing side surface radius-of-curvature of these the second lens 320 is R3, and the focal length of whole photographic optical lens group is f, and its relational expression is: R3/f=-9.26.

In the 3rd embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 3rd lens 330 is R5, and the focal length of whole photographic optical lens group is f, and its relational expression is: R5/f=-0.53.

In the 3rd embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 4th lens 340 is R7, and the focal length of whole photographic optical lens group is f, and its relational expression is: | R7/f|=1.52.

In the 3rd embodiment photographic optical lens group, the focal length of the 3rd lens 330 is f3, and the focal length of whole photographic optical lens group is f, and its relational expression is: f3/f=0.53.

In the 3rd embodiment photographic optical lens group, the focal length of the 4th lens 340 is f4, and the focal length of whole photographic optical lens group is f, and its relational expression is: f4/f=-0.50.

In the 3rd embodiment photographic optical lens group, the focal length of the 3rd lens 330 is f3, and the focal length of the 4th lens 340 is f4, and its relational expression is: | f3/f4|=1.05.

In the aforementioned photographic optical lens group of the present invention, this aperture 300 is SL to the distance of this sense electronics optical element on optical axis, and the thing side surface 311 of this first lens 310 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.96.

In the 3rd embodiment photographic optical lens group, the thing side surface 311 of this first lens 310 to the distance of this sense electronics optical element on optical axis is TTL, and half of this sense electronics optical element effective pixel area diagonal line length is ImgH, and its relational expression is: TTL/ImgH=1.67.

The detailed optical data of the 3rd embodiment is as shown in Figure 11 table five, and its aspherical surface data is as shown in Figure 12 A and Figure 12 B table six, and wherein the unit of radius-of-curvature, thickness and focal length is mm, and HFOV is defined as half of maximum visual angle.

The 4th embodiment:

The schematic diagram of photographic optical lens group the 4th embodiment of the present invention sees also Fig. 4 A, and the aberration curve of the 4th embodiment sees also Fig. 4 B.The photographic optical lens group of the 4th embodiment mainly is made of four pieces of lens, is extremely sequentially comprised as side by the thing side:

The first lens 410 of the one positive refracting power of tool, its thing side surface 411 are that convex surface and picture side surface 412 are concave surface, and its material is glass, the thing side surface 411 of this first lens 410 be all sphere as side surface 412;

The second lens 420 of the negative refracting power of one tool, its thing side surface 421 be that concave surface and picture side surface 422 are concave surface, and its material is plastic cement, the thing side surface 421 of these the second lens 420 and be all aspheric surface as side surface 422;

The 3rd lens 430 of the one positive refracting power of tool, its thing side surface 431 is that concave surface and picture side surface 432 are convex surface, its material is plastic cement, the thing side surface 431 of the 3rd lens 430 be all aspheric surface as side surface 432, and the thing side surface 431 of the 3rd lens 430 with as in side surface 432 one of at least the surface be provided with at least one point of inflexion; And

The 4th lens 440 of the negative refracting power of one tool, its thing side surface 441 is that concave surface and picture side surface 442 are concave surface, its material is plastic cement, the thing side surface 441 of the 4th lens 440 be all aspheric surface as side surface 442, and the 4th lens 440 be provided with at least one point of inflexion as side surface 442;

Wherein, this photographic optical lens group separately is provided with an aperture 400 and is arranged between object and this first lens 410;

Separately include an infrared ray filtering optical filter 450 and be placed in looking like between side surface 442 and an imaging surface 460 of the 4th lens 440; And a cover glass 470 is placed between this infrared ray filtering optical filter 450 and this imaging surface 460.The material of this infrared ray filtering optical filter 450 is that glass and its do not affect the focal length of photographic optical lens group of the present invention, and this photographic optical lens group separately arranges a sense electronics optical element at this imaging surface 460 places for object imaging thereon.

The 4th equational expression of embodiment aspheric curve is as the form of the first embodiment.

In the 4th embodiment photographic optical lens group, the focal length of whole photographic optical lens group is f, and its relational expression is: f=4.40 (millimeter).

In the 4th embodiment photographic optical lens group, the f-number of whole photographic optical lens group is Fno, and its relational expression is: Fno=2.83.

In the 4th embodiment photographic optical lens group, in whole photographic optical lens group, half of maximum visual angle is HFOV, and its relational expression is: HFOV=33.0 (degree).

In the 4th embodiment photographic optical lens group, the abbe number of this first lens 410 is V1, and the abbe number of these the second lens 420 is V2, and its relational expression is: V1-V2=31.3.

In the 4th embodiment photographic optical lens group, this first lens 410 is T12 with the spacing distance of these the second lens 420 on optical axis, and the focal length of whole photographic optical lens group is f, and its relational expression is: (T12/f) * 100=3.20.

In the 4th embodiment photographic optical lens group, the thing side surface 411 of this first lens 410 is Dr1r4 to these the second lens 420 as the distance of side surface 422 on optical axis, the thickness of the 3rd lens 430 on optical axis is CT3, and its relational expression is: Dr1r4/CT3=1.30.

In the 4th embodiment photographic optical lens group, the thing side surface radius-of-curvature of this first lens 410 is R1, and the focal length of whole photographic optical lens group is f, and its relational expression is: R1/f=0.54.

In the 4th embodiment photographic optical lens group, the thing side surface radius-of-curvature of this first lens 410 is R1 and is R2 as the side surface radius-of-curvature, and its relational expression is: | R1/R2|=0.06.

In the 4th embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 3rd lens 430 is R5, the 3rd lens 430 be R6 as the side surface radius-of-curvature, its relational expression is: (R5+R6)/(R5-R6)=1.37.

In the 4th embodiment photographic optical lens group, the thing side surface radius-of-curvature of these the second lens 420 is R3, and the focal length of whole photographic optical lens group is f, and its relational expression is: R3/f=-10.82.

In the 4th embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 3rd lens 430 is R5, and the focal length of whole photographic optical lens group is f, and its relational expression is: R5/f=-1.65.

In the 4th embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 4th lens 440 is R7, and the focal length of whole photographic optical lens group is f, and its relational expression is: | R7/f|=3.36.

In the 4th embodiment photographic optical lens group, the focal length of the 3rd lens 430 is f3, and the focal length of whole photographic optical lens group is f, and its relational expression is: f3/f=0.52.

In the 4th embodiment photographic optical lens group, the focal length of the 4th lens 440 is f4, and the focal length of whole photographic optical lens group is f, and its relational expression is: f4/f=-0.55.

In the 4th embodiment photographic optical lens group, the focal length of the 3rd lens 430 is f3, and the focal length of the 4th lens 440 is f4, and its relational expression is: | f3/f4|=0.95.

In the aforementioned photographic optical lens group of the present invention, this aperture 400 is SL to the distance of this sense electronics optical element on optical axis, and the thing side surface 411 of this first lens 410 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.99.

In the 4th embodiment photographic optical lens group, the thing side surface 411 of this first lens 410 to the distance of this sense electronics optical element on optical axis is TTL, and half of this sense electronics optical element effective pixel area diagonal line length is ImgH, and its relational expression is: TTL/ImgH=1.93.

The detailed optical data of the 4th embodiment is as shown in Figure 13 table seven, and its aspherical surface data is as shown in Figure 14 table eight, and wherein the unit of radius-of-curvature, thickness and focal length is mm, and HFOV is defined as half of maximum visual angle.

The 5th embodiment:

The schematic diagram of photographic optical lens group the 5th embodiment of the present invention sees also Fig. 5 A, and the aberration curve of the 5th embodiment sees also Fig. 5 B.The photographic optical lens group of the 5th embodiment mainly is made of four pieces of lens, is extremely sequentially comprised as side by the thing side:

The first lens 510 of the one positive refracting power of tool, its thing side surface 511 are that convex surface and picture side surface 512 are concave surface, and its material is glass, the thing side surface 511 of this first lens 510 be all sphere as side surface 512;

The second lens 520 of the negative refracting power of one tool, its thing side surface 521 be that concave surface and picture side surface 522 are concave surface, and its material is plastic cement, the thing side surface 521 of these the second lens 520 and be all aspheric surface as side surface 522;

The 3rd lens 530 of the one positive refracting power of tool, its thing side surface 531 is that concave surface and picture side surface 532 are convex surface, its material is plastic cement, the thing side surface 531 of the 3rd lens 530 be all aspheric surface as side surface 532, and the thing side surface 531 of the 3rd lens 530 with as in side surface 532 one of at least the surface be provided with at least one point of inflexion; And

The 4th lens 540 of the negative refracting power of one tool, its thing side surface 541 is that concave surface and picture side surface 542 are concave surface, its material is plastic cement, the thing side surface 541 of the 4th lens 540 be all aspheric surface as side surface 542, and the 4th lens 540 be provided with at least one point of inflexion as side surface 542;

Wherein, this photographic optical lens group separately is provided with an aperture 500 and is arranged between object and this first lens 510;

Separately include an infrared ray filtering optical filter 550 and be placed in looking like between side surface 542 and an imaging surface 560 of the 4th lens 540; And a cover glass 570 is placed between this infrared ray filtering optical filter 550 and this imaging surface 560.The material of this infrared ray filtering optical filter 550 is that glass and its do not affect the focal length of photographic optical lens group of the present invention, and this photographic optical lens group separately arranges a sense electronics optical element at this imaging surface 560 places for object imaging thereon.

The 5th equational expression of embodiment aspheric curve is as the form of the first embodiment.

In the 5th embodiment photographic optical lens group, the focal length of whole photographic optical lens group is f, and its relational expression is: f=4.41 (millimeter).

In the 5th embodiment photographic optical lens group, the f-number of whole photographic optical lens group is Fno, and its relational expression is: Fno=2.83.

In the 5th embodiment photographic optical lens group, in whole photographic optical lens group, half of maximum visual angle is HFOV, and its relational expression is: HFOV=33.0 (degree).

In the 5th embodiment photographic optical lens group, the abbe number of this first lens 510 is V1, and the abbe number of these the second lens 520 is V2, and its relational expression is: V1-V2=31.3.

In the 5th embodiment photographic optical lens group, this first lens 510 is T12 with the spacing distance of these the second lens 520 on optical axis, and the focal length of whole photographic optical lens group is f, and its relational expression is: (T12/f) * 100=3.72.

In the 5th embodiment photographic optical lens group, the thing side surface 511 of this first lens 510 is Dr1r4 to these the second lens 520 as the distance of side surface 522 on optical axis, the thickness of the 3rd lens 530 on optical axis is CT3, and its relational expression is: Dr1r4/CT3=2.16.

In the 5th embodiment photographic optical lens group, the thing side surface radius-of-curvature of this first lens 510 is R1, and the focal length of whole photographic optical lens group is f, and its relational expression is: R1/f=0.54.

In the 5th embodiment photographic optical lens group, the thing side surface radius-of-curvature of this first lens 510 is R1 and is R2 as the side surface radius-of-curvature, and its relational expression is: | R1/R2|=0.06.

In the 5th embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 3rd lens 530 is R5, the 3rd lens 530 be R6 as the side surface radius-of-curvature, its relational expression is: (R5+R6)/(R5-R6)=2.20.

In the 5th embodiment photographic optical lens group, the thing side surface radius-of-curvature of these the second lens 520 is R3, and the focal length of whole photographic optical lens group is f, and its relational expression is: R3/f=-1.37.

In the 5th embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 3rd lens 530 is R5, and the focal length of whole photographic optical lens group is f, and its relational expression is: R5/f=-0.61.

In the 5th embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 4th lens 540 is R7, and the focal length of whole photographic optical lens group is f, and its relational expression is: | R7/f|=11.34.

In the 5th embodiment photographic optical lens group, the focal length of the 3rd lens 530 is f3, and the focal length of whole photographic optical lens group is f, and its relational expression is: f3/f=0.58.

In the 5th embodiment photographic optical lens group, the focal length of the 4th lens 540 is f4, and the focal length of whole photographic optical lens group is f, and its relational expression is: f4/f=-0.64.

In the 5th embodiment photographic optical lens group, the focal length of the 3rd lens 530 is f3, and the focal length of the 4th lens 540 is f4, and its relational expression is: | f3/f4|=0.91.

In the aforementioned photographic optical lens group of the present invention, this aperture 500 is SL to the distance of this sense electronics optical element on optical axis, and the thing side surface 511 of this first lens 510 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.98.

In the 5th embodiment photographic optical lens group, the thing side surface 511 of this first lens 510 to the distance of this sense electronics optical element on optical axis is TTL, and half of this sense electronics optical element effective pixel area diagonal line length is ImgH, and its relational expression is: TTL/ImgH=1.94.

The detailed optical data of the 5th embodiment is as shown in Figure 15 table nine, and its aspherical surface data is as shown in Figure 16 table ten, and wherein the unit of radius-of-curvature, thickness and focal length is mm, and HFOV is defined as half of maximum visual angle.

The 6th embodiment:

The schematic diagram of photographic optical lens group the 6th embodiment of the present invention sees also Fig. 6 A, and the aberration curve of the 6th embodiment sees also Fig. 6 B.The photographic optical lens group of the 6th embodiment mainly is made of four pieces of lens, is extremely sequentially comprised as side by the thing side:

The first lens 610 of the one positive refracting power of tool, its thing side surface 611 are that convex surface and picture side surface 612 are convex surface, and its material is plastic cement, the thing side surface 611 of this first lens 610 be all aspheric surface as side surface 612;

The second lens 620 of the negative refracting power of one tool, its thing side surface 621 be that concave surface and picture side surface 622 are concave surface, and its material is plastic cement, the thing side surface 621 of these the second lens 620 and be all aspheric surface as side surface 622;

The 3rd lens 630 of the one positive refracting power of tool, its thing side surface 631 are that concave surface and picture side surface 632 are convex surface, and its material is plastic cement, the thing side surface 631 of the 3rd lens 630 be all aspheric surface as side surface 632; And

The 4th lens 640 of the negative refracting power of one tool, its thing side surface 641 is that convex surface and picture side surface 642 are concave surface, its material is plastic cement, the thing side surface 641 of the 4th lens 640 be all aspheric surface as side surface 642, and the 4th lens 640 be provided with at least one point of inflexion as side surface 642;

Wherein, this photographic optical lens group separately is provided with an aperture 600 and is arranged between object and this first lens 610;

Separately include an infrared ray filtering optical filter 650 and be placed in looking like between side surface 642 and an imaging surface 660 of the 4th lens 640; And a cover glass 670 is placed between this infrared ray filtering optical filter 650 and this imaging surface 660.The material of this infrared ray filtering optical filter 650 is that glass and its do not affect the focal length of photographic optical lens group of the present invention, and this photographic optical lens group separately arranges a sense electronics optical element at this imaging surface 660 places for object imaging thereon.

The 6th equational expression of embodiment aspheric curve is as the form of the first embodiment.

In the 6th embodiment photographic optical lens group, the focal length of whole photographic optical lens group is f, and its relational expression is: f=3.42 (millimeter).

In the 6th embodiment photographic optical lens group, the f-number of whole photographic optical lens group is Fno, and its relational expression is: Fno=2.83.

In the 6th embodiment photographic optical lens group, in whole photographic optical lens group, half of maximum visual angle is HFOV, and its relational expression is: HFOV=33.7 (degree).

In the 6th embodiment photographic optical lens group, the abbe number of this first lens 610 is V1, and the abbe number of these the second lens 620 is V2, and its relational expression is: V1-V2=33.1.

In the 6th embodiment photographic optical lens group, this first lens 610 is T12 with the spacing distance of these the second lens 620 on optical axis, and the focal length of whole photographic optical lens group is f, and its relational expression is: (T12/f) * 100=2.92.

In the 6th embodiment photographic optical lens group, the thing side surface 611 of this first lens 610 is Dr1r4 to these the second lens 620 as the distance of side surface 622 on optical axis, the thickness of the 3rd lens 630 on optical axis is CT3, and its relational expression is: Dr1r4/CT3=1.41.

In the 6th embodiment photographic optical lens group, the thing side surface radius-of-curvature of this first lens 610 is R1, and the focal length of whole photographic optical lens group is f, and its relational expression is: R1/f=0.35.

In the 6th embodiment photographic optical lens group, the thing side surface radius-of-curvature of this first lens 610 is R1 and is R2 as the side surface radius-of-curvature, and its relational expression is: | R1/R2|=0.01.

In the 6th embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 3rd lens 630 is R5, the 3rd lens 630 be R6 as the side surface radius-of-curvature, its relational expression is: (R5+R6)/(R5-R6)=2.87.

In the 6th embodiment photographic optical lens group, the thing side surface radius-of-curvature of these the second lens 620 is R3, and the focal length of whole photographic optical lens group is f, and its relational expression is: R3/f=-7.19.

In the 6th embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 3rd lens 630 is R5, and the focal length of whole photographic optical lens group is f, and its relational expression is: R5/f=-0.57.

In the 6th embodiment photographic optical lens group, the thing side surface radius-of-curvature of the 4th lens 640 is R7, and the focal length of whole photographic optical lens group is f, and its relational expression is: | R7/f|=1.60.

In the 6th embodiment photographic optical lens group, the focal length of the 3rd lens 630 is f3, and the focal length of whole photographic optical lens group is f, and its relational expression is: f3/f=0.80.

In the 6th embodiment photographic optical lens group, the focal length of the 4th lens 640 is f4, and the focal length of whole photographic optical lens group is f, and its relational expression is: f4/f=-0.77.

In the 6th embodiment photographic optical lens group, the focal length of the 3rd lens 630 is f3, and the focal length of the 4th lens 640 is f4, and its relational expression is: | f3/f4|=1.03.

In the aforementioned photographic optical lens group of the present invention, this aperture 600 is SL to the distance of this sense electronics optical element on optical axis, and the thing side surface 611 of this first lens 610 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.96.

In the 6th embodiment photographic optical lens group, the thing side surface 611 of this first lens 610 to the distance of this sense electronics optical element on optical axis is TTL, and half of this sense electronics optical element effective pixel area diagonal line length is ImgH, and its relational expression is: TTL/ImgH=1.70.

The detailed optical data of the 6th embodiment is as shown in Figure 17 table ten one, and its aspherical surface data is as shown in Figure 18 table ten two, and wherein the unit of radius-of-curvature, thickness and focal length is mm, and HFOV is defined as half of maximum visual angle.

Table one is depicted as the different numerical value change tables of photographic optical lens group embodiment of the present invention to table ten two (corresponding diagram 7 is to Figure 18 respectively); the all true gained of testing of numerical value change of right each embodiment of the present invention; even use different numerical value; the product of same structure must belong to protection category of the present invention; therefore above explanation is described and accompanying drawing only as exemplary, non-in order to limit claim of the present invention.Table ten three (corresponding Figure 19) is the numeric data of the corresponding correlationship formula of the present invention of each embodiment.

Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above is only specific embodiments of the invention; the protection domain that is not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims

1. a photographic optical lens group, is characterized in that, described photographic optical lens group is extremely sequentially comprised as side by the thing side:

The first lens of the one positive refracting power of tool, its thing side surface is convex surface;

The second lens of the negative refracting power of one tool, its thing side surface is concave surface and is concave surface as side surface;

The 3rd lens of the one positive refracting power of tool, its thing side surface are concave surface and are convex surface as side surface; And

The 4th lens of the negative refracting power of one tool, it is concave surface as side surface, and the thing side surface of described the 4th lens and be all aspheric surface as side surface;

wherein, described photographic optical lens group separately is provided with an aperture and a sense electronics optical element, described aperture is arranged between object and described first lens, and described sense electronics optical element is arranged at the imaging of imaging surface place's confession object, and in described photographic optical lens group, the lens of tool refracting power are 4, the focal length of whole photographic optical lens group is f, the focal length of described the 3rd lens is f3, the focal length of described the 4th lens is f4, the thing side surface radius-of-curvature of described first lens is R1, the thing side surface radius-of-curvature of described the 3rd lens is R5, described the 3rd lens be R6 as the side surface radius-of-curvature, the thing side surface of described first lens to the distance on optical axis as side surface of described the second lens is Dr1r4, the thickness of described the 3rd lens on optical axis is CT3, described aperture to the distance of described sense electronics optical element on optical axis is SL, the thing side surface of described first lens to the distance of described sense electronics optical element on optical axis is TTL, satisfy following relationship:

2.25<(R5+R6)/(R5-R6)<5.00；

-0.60<R5/f<-0.20；

0.35<f3/f<0.91；

-0.83<f4/f<-0.40；

1.00<Dr1r4/CT3<1.75；

0.20＜R1/f＜0.41; And

0.9<SL/TTL<1.1。

2. photographic optical lens group as claimed in claim 1, is characterized in that, the material of described the second lens is plastic cement, and have each other air clearance between described four pieces of lens.

3. photographic optical lens group as claimed in claim 2, is characterized in that, the thing side surface radius-of-curvature of described the second lens is R3, satisfies following relationship:

-18.0<R3/f<-2.5。

4. photographic optical lens group as claimed in claim 3, is characterized in that, satisfies following relationship:

-0.55<R5/f<-0.40。

5. photographic optical lens group as claimed in claim 1, is characterized in that, the thing side surface radius-of-curvature of described the 4th lens is R7, satisfies following relationship:

|R7/f|>1.3。

6. photographic optical lens group as claimed in claim 5, is characterized in that, satisfies following relationship:

0.45<f3/f<0.77。

7. photographic optical lens group as claimed in claim 6, is characterized in that, satisfies following relationship:

-0.77<f4/f<-0.45。

8. photographic optical lens group as claimed in claim 1, is characterized in that, the thing side surface of described the 4th lens is concave surface.

9. photographic optical lens group as claimed in claim 8, is characterized in that, satisfies following relationship:

0.9<|f3/f4|<1.1。

10. photographic optical lens group as claimed in claim 1, is characterized in that, half of described sense electronics optical element effective pixel area diagonal line length is ImgH, satisfies following relationship:

TTL/ImgH<1.8。

11. a photographic optical lens group is characterized in that, described photographic optical lens group is extremely sequentially comprised as side by the thing side:

Wherein, in described photographic optical lens group, the lens of tool refracting power are 4; The focal length of whole photographic optical lens group is f, the focal length of described the 3rd lens is f3, the focal length of described the 4th lens is f4, the thing side surface radius-of-curvature of described the second lens is R3, the thing side surface radius-of-curvature of described the 3rd lens is R5, described the 3rd lens be R6 as the side surface radius-of-curvature, described first lens and the spacing distance of described the second lens on optical axis are T12, satisfy following relationship:

-18.0<R3/f<-2.5；

0.35<f3/f<0.91；

-0.83<f4/f<-0.40；

2.25＜(R5+R6)/(R5-R6)＜5.00; And

0.5<(T12/f)*100<4.0。

12. photographic optical lens group as claimed in claim 11 is characterized in that, satisfies following relationship:

0.45<f3/f<0.77。

13. photographic optical lens group as claimed in claim 12, it is characterized in that, described photographic optical lens group separately is provided with an aperture and a sense electronics optical element, described sense electronics optical element is arranged at the imaging of imaging surface place's confession object, described aperture to the distance of described sense electronics optical element on optical axis is SL, the thing side surface of described first lens to the distance of described sense electronics optical element on optical axis is TTL, satisfies following relationship:

0.9<SL/TTL<1.1。

14. photographic optical lens group as claimed in claim 13 is characterized in that, the thing side surface radius-of-curvature of described the 4th lens is R7, satisfies following relationship:

|R7/f|>1.3。

15. photographic optical lens group as claimed in claim 14 is characterized in that, satisfies following relationship:

-0.77<f4/f<-0.45。

16. photographic optical lens group as claimed in claim 12, it is characterized in that, the thing side surface of described first lens is Dr1r4 to the distance on optical axis as side surface of described the second lens, and the thickness of described the 3rd lens on optical axis is CT3, satisfies following relationship:

1.00<Dr1r4/CT3<1.75。

17. photographic optical lens group as claimed in claim 16 is characterized in that, the thing side surface radius-of-curvature of described first lens is R1, described first lens be R2 as the side surface radius-of-curvature, satisfy following relationship:

|R1/R2|<0.15。

18. photographic optical lens group as claimed in claim 11 is characterized in that, satisfies following relationship:

0.9<|f3/f4|<1.1。