CN102081220B

CN102081220B - Optical lens group for capturing image

Info

Publication number: CN102081220B
Application number: CN200910221600A
Authority: CN
Inventors: 汤相岐; 蔡宗翰
Original assignee: Largan Precision Co Ltd
Current assignee: Largan Precision Co Ltd
Priority date: 2009-11-26
Filing date: 2009-11-26
Publication date: 2012-09-05
Anticipated expiration: 2029-11-26
Also published as: CN102081220A

Abstract

The invention discloses an optical lens group for capturing images, successively comprising a first lens with positive flexion force, a second lens with negative flexion force, a third lens, a four lens and an aperture from an object side to an image side, wherein the object side surface of the first lens is a convex side; the image side surface of the second lens is a convex side; the object side surface of the third lens is a concave side, the image side surface of the third lens is a convex side, at least one of the object side surface and the image side surface of the third lens is an aspheric surface; the image side surface of the fourth lens is a concave side, at least one of the object side surface and the image side surface of the fourth lens is provided with at least one inflection point; the aperture is arranged between a shot object and the first lens; the distance between the first lens and the second lens on an optical axis is T12, the focal length of the integral optical lens group for capturing images is f, the dispersion coefficient of the first lens is V1, the dispersion coefficient of the third lens is V3, and all coefficients satisfy the following relational expressions: (T12/f)*100 is less than 20 and more than 0.5, and V1-V3 is more than 23; and the optical lens group for capturing images only comprises the above four lens with flexion force. The optical lens group for capturing images can effectively improve the imaging quality of the system and is thin.

Description

Capture optical frames group

Technical field

The invention relates to a kind of capture optical frames group; Particularly about a kind of miniaturization capture optical frames group that is applied to mobile phone camera.

Background technology

Recent years, along with the rise of mobile phone camera, the demand of miniaturization phtographic lens day by day improves; And the photo-sensitive cell of general phtographic lens is nothing more than being sensitization coupling element (Charge Coupled Device; CCD) or two kinds of complementary matal-oxide semiconductor elements (Complementary Metal-OxideSemiconductor Sensor, CMOS Sensor), and because the semiconductor fabrication process development of technology; Make the elemental area of photo-sensitive cell dwindle; The miniaturization phtographic lens is the development toward high pixel field gradually, therefore, and to the also increase day by day of requirement of image quality.

It is main that the phtographic lens that tradition is equipped on mobile phone camera adopts the three-chip type lens arrangement more; Lens combination is born second lens of refracting power and the 3rd lens of the positive refracting power of a tool from thing side to first lens, the tool that as side are the positive refracting power of a tool in regular turn; Like United States Patent (USP) the 7th, 145, shown in No. 736.But the elemental area at photo-sensitive cell dwindles gradually, and under system's situation that the requirement of image quality is improved constantly, the three-chip type lens combination of commonly seeing can't satisfy the more phtographic lens module of high-order.

United States Patent (USP) the 7th, 365 has disclosed a kind of four-piece type lens combination No. 920; But wherein first lens and second lens system is bonded to each other and become Doublet with two sheet glass spherical mirrors; In order to color difference eliminating, but the method has its shortcoming, one of which; Too much glass spherical mirror configuration makes degree of freedom in system not enough, causes the optics total length of system to be difficult for shortening; Its two, the bonding manufacture craft of glass mirror is difficult for, and causes the difficulty in the manufacturing.

In view of this, be badly in need of a kind of high-pixel mobile phone camera that can be used for, manufacture craft is simple and easy and be unlikely to the capture optical frames group that makes the camera lens total length long.

Summary of the invention

The present invention provides a kind of capture optical frames group, is extremely comprised in regular turn as side by the thing side: first lens of the positive refracting power of a tool, and its thing side surface is a convex surface; Second lens of the negative refracting power of one tool, it is a convex surface as side surface; One the 3rd lens, its thing side surface are concave surface, be convex surface as side surface, and the thing side surface of the 3rd lens be aspheric surface as at least one surface in the side surface; One the 4th lens, it is a concave surface as side surface, and the thing side surface of the 4th lens be provided with at least one point of inflexion (Inflection Point) as at least one surface in the side surface; And an aperture, be to be arranged between object and this second lens; These first lens and the distance of these second lens on optical axis are T12; The focal length of whole capture optical frames group is f; The abbe number of these first lens (Abbe Number) is V1, and the abbe number of the 3rd lens is V3, is to satisfy the following relationship formula: 0.5＜(T12/f) * 100＜20; 23＜V1-V3.In the capture optical frames group of the present invention, the lens of tool refracting power are merely four.

The present invention can effectively revise the image quality of aberration with elevator system by the configuration mode of above-mentioned mirror group, and can shorten the optics total length of this capture optical frames group simultaneously, keeps the characteristic of slimming.

The aforementioned capture optical frames of the present invention group provides positive refracting power by these first lens, and when aperture placed the object side near this capture optical frames group, can effectively shorten the optics total length of this capture optical frames group.In addition; Above-mentioned configuration mode can make the outgoing pupil (Exit Pupil) of this capture optical frames group away from imaging surface, and therefore, light will be incident on the mode near vertical incidence on the 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 now solid-state electronic photo-sensitive cell, can make the sensitization susceptibility of sense electronics optical element improve, and the minimizing system produces the possibility at dark angle.In addition, the 4th lens in the aforementioned capture optical frames of the present invention group are provided with the point of inflexion, and the light that can more effectively suppress from the axle visual field is incident in the angle on the photo-sensitive cell, and the further aberration of modified off-axis visual field.In addition; In the aforementioned capture optical frames of the present invention group; When aperture being placed more near this second lens place; The characteristic that can help Wide-angle helps to receive the correction of poor (Chromatic Aberration of Magnification) to distorting (Distortion) and multiplying power look, and can effectively reduce the susceptibility of this capture optical frames group.In other words, in the aforementioned capture optical frames of the present invention group,, be to focus on heart characteristic far away when aperture being placed more near the object place, the optics total length of whole capture optical frames group can be shorter; When aperture being placed more near this second lens place, then focus on the characteristic of Wide-angle, can effectively reduce the susceptibility of this capture optical frames group.

On the other hand, the present invention provides a kind of capture optical frames group, is extremely comprised in regular turn as side by the thing side: first lens of the positive refracting power of a tool, and its thing side surface is a convex surface; Second lens of the negative refracting power of one tool; The 3rd lens of the negative refracting power of one tool, its thing side surface are concave surface, be convex surface as side surface, and the thing side surface of the 3rd lens be aspheric surface as at least one surface in the side surface; One the 4th lens, it is a concave surface as side surface, and the thing side surface of the 4th lens be provided with at least one point of inflexion as at least one surface in the side surface; And an aperture, be to be arranged between object and this first lens; These first lens and the distance of these second lens on optical axis are T12; The focal length of whole capture optical frames group is f; The abbe number of these first lens is V1; The abbe number of the 3rd lens is V3, and the thing side surface radius-of-curvature of these first lens is R1, be R2 as the side surface radius-of-curvature, is to satisfy the following relationship formula: 0.5＜(T12/f) * 100＜20; 23＜V1-V3; 0.25＜| R1/R2|＜0.70.In the capture optical frames group of the present invention, the lens of tool refracting power are merely four.

Again on the other hand, the present invention provides a kind of capture optical frames group, is extremely comprised in regular turn as side by the thing side: first lens of the positive refracting power of a tool, and its thing side surface is a convex surface; Second lens of the negative refracting power of one tool, it is a convex surface as side surface; The 3rd lens of the negative refracting power of one tool, its thing side surface are concave surface, be convex surface as side surface, and the thing side surface of the 3rd lens be aspheric surface as at least one surface in the side surface; One the 4th lens, it is a concave surface as side surface, and the thing side surface of the 4th lens be provided with at least one point of inflexion as at least one surface in the side surface; And an aperture, be to be arranged between object and this second lens; These first lens and the distance of these second lens on optical axis are T12, and the focal length of whole capture optical frames group is f, and the focal length of the 3rd lens is f3, is to satisfy the following relationship formula: 0.5＜(T12/f) * 100＜20;-1.2＜f/f3＜-0.005.In the capture optical frames group of the present invention, the lens of tool refracting power are merely four.

Description of drawings

Fig. 1 is the optical system synoptic diagram of first embodiment of the invention;

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

Fig. 3 is the optical system synoptic diagram of second embodiment of the invention;

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

Fig. 5 is the optical system synoptic diagram of third embodiment of the invention;

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

Fig. 7 is the optical system synoptic diagram of fourth embodiment of the invention;

Fig. 8 is the aberration curve figure of fourth embodiment of the invention;

Fig. 9 is the optical system synoptic diagram of fifth embodiment of the invention;

Figure 10 is the aberration curve figure of fifth embodiment of the invention;

Figure 11 is the optical system synoptic diagram of sixth embodiment of the invention;

Figure 12 is the aberration curve figure of sixth embodiment of the invention;

Figure 13 is a table one, is the optical data of first embodiment of the invention;

Figure 14 is a table two, is the aspherical surface data of first embodiment of the invention;

Figure 15 is a table three, is the optical data of second embodiment of the invention;

Figure 16 A is table four A, is the aspherical surface data of second embodiment of the invention;

Figure 16 B is table four B, is the aspherical surface data of second embodiment of the invention;

Figure 17 is a table five, is the optical data of third embodiment of the invention;

Figure 18 A is table six A, is the aspherical surface data of third embodiment of the invention;

Figure 18 B is table six B, is the aspherical surface data of third embodiment of the invention;

Figure 19 is a table seven, is the optical data of fourth embodiment of the invention;

Figure 20 is a table eight, is the aspherical surface data of fourth embodiment of the invention;

Figure 21 is a table nine, is the optical data of fifth embodiment of the invention;

Figure 22 is a table ten, is the aspherical surface data of fifth embodiment of the invention;

Figure 23 is a table ten one, is the optical data of sixth embodiment of the invention;

Figure 24 is a table ten two, is the aspherical surface data of sixth embodiment of the invention;

Figure 25 is a table ten three, is the numerical data of first embodiment of the invention to the six embodiment correlationship formulas.

The main element symbol description:

Aperture 100,300,500,700,900,1100

First lens 110,310,510,710,910,1110

Thing side surface 111,311,511,711,911,1111

Picture side surface 112,312,512,712,912,1112

Second lens 120,320,520,720,920,1120

Thing side surface 121,321,521,721,921,1121

Picture side surface 122,322,522,722,922,1122

The 3rd lens 130,330,530,730,930,1130

Thing side surface 131,331,531,731,931,1131

Picture side surface 132,332,532,732,932,1132

The 4th lens 140,340,540,740,940,1140

Thing side surface 141,341,541,741,941,1141

Picture side surface 142,342,542,742,942,1142

Infrared ray filtering optical filter 150,350,550,750,950,1150

Imaging surface 160,360,560,760,960,1160

The focal length of whole capture optical frames group is f

The focal length of first lens is f1

The focal length of the 3rd lens is f3

The refractive index of first lens is N1

The abbe number of first lens is V1

The abbe number of second lens is V2

The abbe number of the 3rd lens is V3

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 second lens is R3

Second lens be R4 as the side surface radius-of-curvature

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

The thickness of second lens on optical axis is CT2

The distance of thing side surface to sense electronics optical element on optical axis of first lens is TTL

The half the of sense electronics optical element effective pixel area diagonal angle line length is ImgH

Embodiment

For making the object of the invention, technical scheme and advantage clearer, the embodiment of the invention is further elaborated below in conjunction with Figure of description.At this, illustrative examples of the present invention and explanation thereof are used to explain the present invention, but not as to qualification of the present invention.

The present invention provides a kind of capture optical frames group, is extremely comprised in regular turn as side by the thing side: first lens of the positive refracting power of a tool, and its thing side surface is a convex surface; Second lens of the negative refracting power of one tool, it is a convex surface as side surface; One the 3rd lens, its thing side surface are concave surface, be convex surface as side surface, and the thing side surface of the 3rd lens be aspheric surface as at least one surface in the side surface; One the 4th lens, it is a concave surface as side surface, and the thing side surface of the 4th lens be provided with at least one point of inflexion as at least one surface in the side surface; And an aperture, be to be arranged between object and this second lens; These first lens and the distance of these second lens on optical axis are T12, and the focal length of whole capture optical frames group is f, and the abbe number of these first lens is V1, and the abbe number of the 3rd lens is V3, is to satisfy the following relationship formula: 0.5＜(T12/f) * 100＜20; 23＜V1-V3.In the capture optical frames group of the present invention, the lens of tool refracting power are merely four.

In aforementioned capture optical frames group, the positive refracting power of this first lens tool, and its thing side surface is convex surface, is the optics total length that can effectively shorten this capture optical frames group; This second lens tool is born refracting power, is the aberration that can help update the system; The 3rd lens and the 4th lens can be positive refracting power or negative refracting power lens; When the 3rd lens and the 4th lens all during the positive refracting power of tool; Behind second lens of negative refracting power, insert the positive refracting power lens of these two tools; The generation that can effectively suppress astigmatism (Astigmatism) and distort makes capture optical frames group of the present invention obtain higher resolving power; When the positive refracting power of the 3rd lens tool and during the negative refracting power of the 4th lens tool, then forming one just, negative looking in the distance (Telephoto) structure, be the back focal length that helps shortening system, to reduce its optics total length; When the negative refracting power of the 3rd lens tool and during the positive refracting power of the 4th lens tool, can effectively revise coma (Comatic Aberration) and avoid the excessive increase of other aberrations simultaneously; When the 3rd lens and the 4th lens all during the negative refracting power of tool, can make system's principal point (Principal Point) away from imaging surface, more can shorten the optics total length of system effectively.

In the aforementioned capture optical frames of the present invention group, these first lens and the distance of these second lens on optical axis are T12, and the focal length of whole capture optical frames group is f, are to satisfy note relational expression down: 0.5＜(T12/f) * 100＜20.When T12/f satisfies the above-mentioned relation formula, can prevent the excessive increase of astigmatism, and help the higher order aberratons of update the system.

In the aforementioned capture optical frames of the present invention group, the abbe number of these first lens is V1, and the abbe number of the 3rd lens is V3, is to satisfy note relational expression: 23＜V1-V3 down, with the aberration of effective update the system.

In the aforementioned capture optical frames of the present invention group, these second lens be convex surface as side surface, can effectively reduce marginal ray and be incident in the angle on the photo-sensitive cell, promote the luminous sensitivity of this capture optical frames group; The thing side surface of the 3rd lens is concave surface, be convex surface as side surface, can help the astigmatism of update the system; The 4th lens be concave surface as side surface, can make system's principal point away from imaging surface, to shorten the optics total length of system.

In the aforementioned capture optical frames of the present invention group, preferably, the thing side surface of the 4th lens is a convex surface, can make the 4th lens form the crescent lens of a convex-concave, can help the astigmatism of update the system.

In the aforementioned capture optical frames of the present invention group, the focal length of whole capture optical frames group is f, and the focal length of these first lens is f1, preferably, is to satisfy note relational expression: 1.3＜f/f1＜2.5 down.When f/f1 satisfies the above-mentioned relation formula; The refracting power size configure of these first lens is balance comparatively; With the optics total length of effective shortening system, and can avoid the excessive increase of high-order spherical aberration (High Order Spherical Aberration) and then the image quality of elevator system simultaneously; More preferably, be to satisfy note relational expression: 1.7＜f/f1＜2.3 down.

In the aforementioned capture optical frames of the present invention group, the thing side surface radius-of-curvature of these first lens is R1, and the focal length of whole capture optical frames group is f, preferably, is to satisfy note relational expression: 0.30＜R1/f＜0.50 down.When R1/f satisfies the above-mentioned relation formula, can effectively reduce the optics total length of this capture optical frames group, and can avoid the excessive increase of higher order aberratons.

In the aforementioned capture optical frames of the present invention group, the refractive index of these first lens is N1, preferably, is to satisfy note relational expression: 1.5＜N1＜1.6 down.When N1 satisfies the above-mentioned relation formula, can help these first lens and on the optics plastic cement material, obtain better coupling, make system obtain preferable image quality.

In the aforementioned capture optical frames of the present invention group, the thickness of these second lens on optical axis is CT2, and the focal length of whole capture optical frames group is f, preferably, is to satisfy note relational expression: 0.02＜CT2/f＜0.10 down.When CT2/f satisfies the above-mentioned relation formula, can help the formability and the homogenieity of plastic lens ejection formation, help to improve the yield on the manufacture craft.

In the aforementioned capture optical frames of the present invention group, the thing side surface radius-of-curvature of these second lens is R3, be R4 as the side surface radius-of-curvature, preferably, be to satisfy note relational expression down: 0.10＜| R3/R4|＜0.50.When | when R3/R4| satisfies the above-mentioned relation formula, can help the revisal of spherical aberration (SphericalAberration) and coma in this capture optical frames group, making has good balance between the two.

In the aforementioned capture optical frames of the present invention group; Other is provided with a sense electronics optical element and supplies the object imaging on it; The distance of the thing side surface of these first lens to this sense electronics optical element on optical axis is TTL; And the half the of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, preferably, is to satisfy note relational expression: TTL/ImgH＜2.0 down.When TTL/ImgH satisfies the above-mentioned relation formula, help keeping the miniaturization of capture optical frames group, to be equipped on the frivolous portable electronic product.

In the aforementioned capture optical frames of the present invention group, the abbe number of these first lens is V1, and the abbe number of these second lens is V2, preferably, is to satisfy note relational expression: 28＜V1-V2＜40 down, with the aberration of effective update the system.

In the aforementioned capture optical frames of the present invention group, preferably, aperture system is arranged between object and this first lens, and so configuration system helps the heart characteristic far away of lens combination, and the optics total length of whole capture optical frames group can be shorter.

In aforementioned capture optical frames group, the positive refracting power of this first lens tool, and its thing side surface is convex surface, is the optics total length that can effectively shorten this capture optical frames group; This second lens tool is born refracting power, is the aberration that can help update the system; The 3rd lens tool is born refracting power, and effectively the Petzval of update the system and number (Petzval Sum) make peripheral image planes become more flat; The 4th lens can be a positive refracting power or negative refracting power lens, when the positive refracting power of the 4th lens tool, can effectively revise the excessive increase that coma is also avoided other aberrations simultaneously; When the 4th lens tool is born refracting power, can make system's principal point away from imaging surface, more can shorten the optics total length of system effectively.

In the aforementioned capture optical frames of the present invention group, the thing side surface radius-of-curvature of these first lens is R1, be R2 as the side surface radius-of-curvature, be to satisfy note relational expression down: 0.25＜| R1/R2|＜0.70.When | when R1/R2| satisfies the above-mentioned relation formula, can help the revisal of spherical aberration in the capture optical frames group.

In the aforementioned capture optical frames of the present invention group, the thing side surface of the 3rd lens is concave surface, be convex surface as side surface, can help the astigmatism of update the system; The 4th lens be concave surface as side surface, can make system's principal point away from imaging surface, to shorten the optics total length of system.

In the aforementioned capture optical frames of the present invention group, preferably, these second lens the thing side surface be concave surface, help the aberration of update the system.Preferably, the thing side surface of the 4th lens is a convex surface, can make the 4th lens form the crescent lens of a convex-concave, can help the astigmatism of update the system.

In the aforementioned capture optical frames of the present invention group, the focal length of whole capture optical frames group is f, and the focal length of these first lens is f1, preferably, is to satisfy note relational expression: 1.7＜f/f1＜2.3 down.When f/f1 satisfied the above-mentioned relation formula, the refracting power size configure of these first lens is balance comparatively, with the optics total length of effective shortening system, and can avoid the excessive increase of high-order spherical aberration and then the image quality of elevator system simultaneously.

In the aforementioned capture optical frames of the present invention group, the thing side surface radius-of-curvature of these second lens is R3, be R4 as the side surface radius-of-curvature, preferably, be to satisfy note relational expression down: 0.10＜| R3/R4|＜0.50.When | when R3/R4| satisfies the above-mentioned relation formula, can help the revisal of spherical aberration and coma in this capture optical frames group, making has good balance between the two.

In aforementioned capture optical frames group, the positive refracting power of this first lens tool, and its thing side surface is convex surface, is the optics total length that can effectively shorten this capture optical frames group; This second lens tool is born refracting power, is the aberration that can help update the system; The 3rd lens tool is born refracting power, and effectively the Petzval of update the system and number make peripheral image planes become more flat; The 4th lens can be positive refracting power or negative refracting power lens, when the positive refracting power of the 4th lens tool, can effectively revise the excessive increase that coma is also avoided other aberrations simultaneously; When the 4th lens tool is born refracting power, can make system's principal point away from imaging surface, more can shorten the optics total length of system effectively.

In the aforementioned capture optical frames of the present invention group, the focal length of whole capture optical frames group is f, and the focal length of the 3rd lens is f3, is to satisfy note relational expression :-1.2＜f/f3＜-0.005 down.When f/f3 satisfies the above-mentioned relation formula, can guarantee the negative refracting power of the 3rd lens, with the Petzval and the number of effective update the system, make peripheral image planes become more flat.

In the aforementioned capture optical frames of the present invention group, the focal length of whole capture optical frames group is f, and the focal length of these first lens is f1, preferably, is to satisfy note relational expression: 1.3＜f/f1＜2.5 down.When f/f1 satisfied the above-mentioned relation formula, the refracting power size configure of these first lens is balance comparatively, with the optics total length of effective shortening system, and can avoid the excessive increase of high-order spherical aberration and then the image quality of elevator system simultaneously.

In the aforementioned capture optical frames of the present invention group, the abbe number of these first lens is V1, and the abbe number of the 3rd lens is V3, preferably, is to satisfy note relational expression: 23＜V1-V3 down.When V1-V3 satisfies the above-mentioned relation formula, can help the aberration of update the system.

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

In the capture optical frames group of the present invention, if lens surface system representes then that for convex surface this lens surface is a convex surface in paraxial place; If lens surface system representes then that for concave surface this lens surface is a concave surface in paraxial place.

Capture optical frames group of the present invention will cooperate appended graphic the detailed description by following specific embodiment.

First embodiment

First embodiment of the invention sees also Fig. 1, and the aberration curve of first embodiment sees also Fig. 2.The capture optical frames group of first embodiment mainly is made up of four pieces of lens, is extremely comprised in regular turn as side by the thing side:

First lens 110 of the positive refracting power of one tool, its thing side surface 111 and be all convex surface as side surface 112, its material is a plastic cement, the thing side surface 111 of these first lens 110, is all aspheric surface as side surface 112;

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 convex surface, and its material is a plastic cement, the thing side surface 121 of these second lens 120, are all aspheric surface as side surface 122;

The 3rd lens 130 of the negative refracting power of one tool, its thing side surface 131 be that concave surface and picture side surface 132 are convex surface, and its material is a plastic cement, the thing side surface 131 of the 3rd lens 130, are all aspheric surface as side surface 132;

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 a plastic cement; The thing side surface 141 of the 4th lens 140, be all aspheric surface as side surface 142, and the thing side surface 141 of the 4th lens 140, as all being provided with at least one point of inflexion on the side surface 142;

One aperture 100 places between object and this first lens 110;

Other includes an infrared ray filtering optical filter (IR Filter) 150 and places looking like between a side surface 142 and the imaging surface 160 of the 4th lens 140; The material of this infrared ray filtering optical filter 150 is that glass and its do not influence the focal length of this capture optical frames group of the present invention.

The equation of above-mentioned aspheric curve is represented 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 the 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 the aspheric curve and the distance of optical axis;

K: conical surface coefficient;

Ai: i rank asphericity coefficient.

In the first embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and its relational expression is: f=4.67 (millimeter).

In the first embodiment capture optical frames group, the f-number (f-number) of whole capture optical frames group is Fno, and its relational expression is: Fno=2.85.

In the first embodiment capture optical frames group, the half angle of view of whole capture optical frames group is HFOV, and its relational expression is: HFOV=31.6 (degree).

In the first embodiment capture optical frames group, the abbe number of these first lens 110 is V1, and the abbe number of these second lens 120 is V2, and its relational expression is: V1-V2=23.9.

In the first embodiment capture optical frames group, the abbe number of these first lens 110 is V1, and the abbe number of the 3rd lens 130 is V3, and its relational expression is: V1-V3=32.5.

In the first embodiment capture optical frames group, the refractive index of these first lens 110 is N1, and its relational expression is: N1=1.544.

In the first embodiment capture optical frames group, these first lens 110 are T12 with the distance of these second lens 120 on optical axis, and the focal length of whole capture optical frames group is f, and its relational expression is: (T12/f) * 100=1.07.

In the first embodiment capture optical frames group, the thickness of these second lens 120 on optical axis is CT2, and the focal length of whole capture optical frames group is f, and its relational expression is: CT2/f=0.07.

In the first embodiment capture optical frames group, the thing side surface radius-of-curvature of these first lens 110 is R1, be R2 as the side surface radius-of-curvature, its relational expression is: | R1/R2|=0.65.

In the first embodiment capture optical frames group, the thing side surface radius-of-curvature of these second lens 120 is R3, be R4 as the side surface radius-of-curvature, its relational expression is: | R3/R4|=0.24.

In the first embodiment capture optical frames group, the thing side surface radius-of-curvature of these first lens 110 is R1, and the focal length of whole capture optical frames group is f, and its relational expression is: R1/f=0.42.

In the first embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and the focal length of these first lens 110 is f1, and its relational expression is: f/f1=2.01.

In the first embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and the focal length of the 3rd lens 130 is f3, and its relational expression is: f/f3=-0.34.

In the first embodiment capture optical frames group; This capture optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 160 places; The distance of the thing side surface 111 of these first lens 110 to this sense electronics optical element on optical axis is TTL; And the half the of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, and its relational expression is: TTL/ImgH=1.87.

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

Second embodiment

Second embodiment of the invention sees also Fig. 3, and the aberration curve of second embodiment sees also Fig. 4.The capture optical frames group of second embodiment mainly is made up of four pieces of lens, is extremely comprised in regular turn as side by the thing side:

First lens 310 of the positive refracting power of one tool, its thing side surface 311 and be all convex surface as side surface 312, its material is a plastic cement, the thing side surface 311 of these first lens 310, is all aspheric surface as side surface 312;

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

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

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

One aperture 300 places between object and this first lens 310;

Other includes an infrared ray filtering optical filter 350 and places looking like between a side surface 342 and the 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 influence the focal length of this capture optical frames group of the present invention.

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

In the second embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and its relational expression is: f=4.68 (millimeter).

In the second embodiment capture optical frames group, the f-number of whole capture optical frames group is Fno, and its relational expression is: Fno=2.81.

In the second embodiment capture optical frames group, the half angle of view of whole capture optical frames group is HFOV, and its relational expression is: HFOV=31.7 (degree).

In the second embodiment capture optical frames group, the abbe number of these first lens 310 is V1, and the abbe number of these second lens 320 is V2, and its relational expression is: V1-V2=25.7.

In the second embodiment capture optical frames group, the abbe number of these first lens 310 is V1, and the abbe number of the 3rd lens 330 is V3, and its relational expression is: V1-V3=32.5.

In the second embodiment capture optical frames group, the refractive index of these first lens 310 is N1, and its relational expression is: N1=1.544.

In the second embodiment capture optical frames group, these first lens 310 are T12 with the distance of these second lens 320 on optical axis, and the focal length of whole capture optical frames group is f, and its relational expression is: (T12/f) * 100=1.07.

In the second embodiment capture optical frames group, the thickness of these second lens 320 on optical axis is CT2, and the focal length of whole capture optical frames group is f, and its relational expression is: CT2/f=0.08.

In the second embodiment capture optical frames group, the thing side surface radius-of-curvature of these first lens 310 is R1, be R2 as the side surface radius-of-curvature, its relational expression is: | R1/R2|=0.50.

In the second embodiment capture optical frames group, the thing side surface radius-of-curvature of these second lens 320 is R3, be R4 as the side surface radius-of-curvature, its relational expression is: | R3/R4|=0.55.

In the second embodiment capture optical frames group, the thing side surface radius-of-curvature of these first lens 310 is R1, and the focal length of whole capture optical frames group is f, and its relational expression is: R1/f=0.33.

In the second embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and the focal length of these first lens 310 is f1, and its relational expression is: f/f1=2.34.

In the second embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and the focal length of the 3rd lens 330 is f3, and its relational expression is: f/f3=-0.11.

In the second embodiment capture optical frames group; This capture optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 360 places; The distance of the thing side surface 311 of these first lens 310 to this sense electronics optical element on optical axis is TTL; And the half the of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, and its relational expression is: TTL/ImgH=1.80.

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

The 3rd embodiment

Third embodiment of the invention sees also Fig. 5, and the aberration curve of the 3rd embodiment sees also Fig. 6.The capture optical frames group of the 3rd embodiment mainly is made up of four pieces of lens, is extremely comprised in regular turn as side by the thing side:

First lens 510 of the positive refracting power of one tool, its thing side surface 511 and be all convex surface as side surface 512, its material is a plastic cement, the thing side surface 511 of these first lens 510, is all aspheric surface as side surface 512;

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

The 3rd lens 530 of the negative refracting power of one tool, its thing side surface 531 be that concave surface and picture side surface 532 are convex surface, and its material is a plastic cement, the thing side surface 531 of the 3rd lens 530, are all aspheric surface as side surface 532;

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

One aperture 500 places between object and this first lens 510;

Other includes an infrared ray filtering optical filter 550 and places looking like between a side surface 542 and the imaging surface 560 of the 4th lens 540; The material of this infrared ray filtering optical filter 550 is that glass and its do not influence the focal length of this capture optical frames group of the present invention.

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

In the 3rd embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and its relational expression is: f=4.63 (millimeter).

In the 3rd embodiment capture optical frames group, the f-number of whole capture optical frames group is Fno, and its relational expression is: Fno=2.81.

In the 3rd embodiment capture optical frames group, the half angle of view of whole capture optical frames group is HFOV, and its relational expression is: HFOV=31.7 (degree).

In the 3rd embodiment capture optical frames group, the abbe number of these first lens 510 is V1, and the abbe number of these second lens 520 is V2, and its relational expression is: V1-V2=25.7.

In the 3rd embodiment capture optical frames group, the abbe number of these first lens 510 is V1, and the abbe number of the 3rd lens 530 is V3, and its relational expression is: V1-V3=32.5.

In the 3rd embodiment capture optical frames group, the refractive index of these first lens 510 is N1, and its relational expression is: N1=1.544.

In the 3rd embodiment capture optical frames group, these first lens 510 are T12 with the distance of these second lens 520 on optical axis, and the focal length of whole capture optical frames group is f, and its relational expression is: (T12/f) * 100=1.08.

In the 3rd embodiment capture optical frames group, the thickness of these second lens 520 on optical axis is CT2, and the focal length of whole capture optical frames group is f, and its relational expression is: CT2/f=0.06.

In the 3rd embodiment capture optical frames group, the thing side surface radius-of-curvature of these first lens 510 is R1, be R2 as the side surface radius-of-curvature, its relational expression is: | R1/R2|=0.39.

In the 3rd embodiment capture optical frames group, the thing side surface radius-of-curvature of these second lens 520 is R3, be R4 as the side surface radius-of-curvature, its relational expression is: | R3/R4|=0.60.

In the 3rd embodiment capture optical frames group, the thing side surface radius-of-curvature of these first lens 510 is R1, and the focal length of whole capture optical frames group is f, and its relational expression is: R1/f=0.35.

In the 3rd embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and the focal length of these first lens 510 is f1, and its relational expression is: f/f1=2.10.

In the 3rd embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and the focal length of the 3rd lens 530 is f3, and its relational expression is: f/f3=-0.71.

In the 3rd embodiment capture optical frames group; This capture optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 560 places; The distance of the thing side surface 511 of these first lens 510 to this sense electronics optical element on optical axis is TTL; And the half the of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, and its relational expression is: TTL/ImgH=1.81.

The detailed optical data of the 3rd embodiment is shown in Figure 17 table five, and its aspherical surface data is shown in table six A and table six B of Figure 18 A and Figure 18 B, and wherein the unit of radius-of-curvature, thickness and focal length is mm, and HFOV is defined as the half the of maximum visual angle.

The 4th embodiment

Fourth embodiment of the invention sees also Fig. 7, and the aberration curve of the 4th embodiment sees also Fig. 8.The capture optical frames group of the 4th embodiment mainly is made up of four pieces of lens, is extremely comprised in regular turn as side by the thing side:

First lens 710 of the positive refracting power of one tool, its thing side surface 711 and be all convex surface as side surface 712, its material is a plastic cement, the thing side surface 711 of these first lens 710, is all aspheric surface as side surface 712;

Second lens 720 of the negative refracting power of one tool, its thing side surface 721 be that concave surface and picture side surface 722 are convex surface, and its material is a plastic cement, the thing side surface 721 of these second lens 720, are all aspheric surface as side surface 722;

The 3rd lens 730 of the negative refracting power of one tool, its thing side surface 731 be that concave surface and picture side surface 732 are convex surface, and its material is a plastic cement, the thing side surface 731 of the 3rd lens 730, are all aspheric surface as side surface 732;

The 4th lens 740 of the negative refracting power of one tool; Its thing side surface 741 is that convex surface and picture side surface 742 are concave surface; Its material is a plastic cement; The thing side surface 741 of the 4th lens 740, be all aspheric surface, and the thing side surface 741 of the 4th lens 740, all be provided with at least one point of inflexion as side surface 742 as side surface 742;

One aperture 700 places between object and this first lens 710;

Other includes an infrared ray filtering optical filter 750 and places looking like between a side surface 742 and the imaging surface 760 of the 4th lens 740; The material of this infrared ray filtering optical filter 750 is that glass and its do not influence the focal length of this capture optical frames group of the present invention.

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

In the 4th embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and its relational expression is: f=4.74 (millimeter).

In the 4th embodiment capture optical frames group, the f-number of whole capture optical frames group is Fno, and its relational expression is: Fno=2.85.

In the 4th embodiment capture optical frames group, the half angle of view of whole capture optical frames group is HFOV, and its relational expression is: HFOV=31.4 (degree).

In the 4th embodiment capture optical frames group, the abbe number of these first lens 710 is V1, and the abbe number of these second lens 720 is V2, and its relational expression is: V1-V2=32.5.

In the 4th embodiment capture optical frames group, the abbe number of these first lens 710 is V1, and the abbe number of the 3rd lens 730 is V3, and its relational expression is: V1-V3=32.5.

In the 4th embodiment capture optical frames group, the refractive index of these first lens 710 is N1, and its relational expression is: N1=1.544.

In the 4th embodiment capture optical frames group, these first lens 710 are T12 with the distance of these second lens 720 on optical axis, and the focal length of whole capture optical frames group is f, and its relational expression is: (T12/f) * 100=2.59.

In the 4th embodiment capture optical frames group, the thickness of these second lens 720 on optical axis is CT2, and the focal length of whole capture optical frames group is f, and its relational expression is: CT2/f=0.06.

In the 4th embodiment capture optical frames group, the thing side surface radius-of-curvature of these first lens 710 is R1, be R2 as the side surface radius-of-curvature, its relational expression is: | R1/R2|=0.43.

In the 4th embodiment capture optical frames group, the thing side surface radius-of-curvature of these second lens 720 is R3, be R4 as the side surface radius-of-curvature, its relational expression is: | R3/R4|=0.35.

In the 4th embodiment capture optical frames group, the thing side surface radius-of-curvature of these first lens 710 is R1, and the focal length of whole capture optical frames group is f, and its relational expression is: R1/f=0.41.

In the 4th embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and the focal length of these first lens 710 is f1, and its relational expression is: f/f1=1.81.

In the 4th embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and the focal length of the 3rd lens 730 is f3, and its relational expression is: f/f3=-0.28.

In the 4th embodiment capture optical frames group; This capture optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 760 places; The distance of the thing side surface 711 of these first lens 710 to this sense electronics optical element on optical axis is TTL; And the half the of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, and its relational expression is: TTL/ImgH=1.87.

The detailed optical data of the 4th embodiment is shown in Figure 19 table seven, and its aspherical surface data is shown in Figure 20 table eight, and wherein the unit of radius-of-curvature, thickness and focal length is mm, and HFOV is defined as the half the of maximum visual angle.

The 5th embodiment

Fifth embodiment of the invention sees also Fig. 9, and the aberration curve of the 5th embodiment sees also Figure 10.The capture optical frames group of the 5th embodiment mainly is made up of four pieces of lens, is extremely comprised in regular turn as side by the thing side:

First lens 910 of the positive refracting power of one tool, its thing side surface 911 and be all convex surface as side surface 912, its material is a plastic cement, the thing side surface 911 of these first lens 910, is all aspheric surface as side surface 912;

Second lens 920 of the negative refracting power of one tool, its thing side surface 921 be that concave surface and picture side surface 922 are convex surface, and its material is a plastic cement, the thing side surface 921 of these second lens 920, are all aspheric surface as side surface 922;

The 3rd lens 930 of the negative refracting power of one tool, its thing side surface 931 be that concave surface and picture side surface 932 are convex surface, and its material is a plastic cement, the thing side surface 931 of the 3rd lens 930, are all aspheric surface as side surface 932;

The 4th lens 940 of the positive refracting power of one tool; Its thing side surface 941 is that convex surface and picture side surface 942 are concave surface; Its material is a plastic cement; The thing side surface 941 of the 4th lens 940, be all aspheric surface, and the thing side surface 941 of the 4th lens 940, all be provided with at least one point of inflexion as side surface 942 as side surface 942;

One aperture 900 places between object and this first lens 910;

Other includes an infrared ray filtering optical filter 950 and places looking like between a side surface 942 and the imaging surface 960 of the 4th lens 940; The material of this infrared ray filtering optical filter 950 is that glass and its do not influence the focal length of this capture optical frames group of the present invention.

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

In the 5th embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and its relational expression is: f=4.61 (millimeter).

In the 5th embodiment capture optical frames group, the f-number of whole capture optical frames group is Fno, and its relational expression is: Fno=2.85.

In the 5th embodiment capture optical frames group, the half angle of view of whole capture optical frames group is HFOV, and its relational expression is: HFOV=31.6 (degree).

In the 5th embodiment capture optical frames group, the abbe number of these first lens 910 is V1, and the abbe number of these second lens 920 is V2, and its relational expression is: V1-V2=32.5.

In the 5th embodiment capture optical frames group, the abbe number of these first lens 910 is V1, and the abbe number of the 3rd lens 930 is V3, and its relational expression is: V1-V3=32.5.

In the 5th embodiment capture optical frames group, the refractive index of these first lens 910 is N1, and its relational expression is: N1=1.544.

In the 5th embodiment capture optical frames group, these first lens 910 are T12 with the distance of these second lens 920 on optical axis, and the focal length of whole capture optical frames group is f, and its relational expression is: (T12/f) * 100=2.08.

In the 5th embodiment capture optical frames group, the thickness of these second lens 920 on optical axis is CT2, and the focal length of whole capture optical frames group is f, and its relational expression is: CT2/f=0.07.

In the 5th embodiment capture optical frames group, the thing side surface radius-of-curvature of these first lens 910 is R1, be R2 as the side surface radius-of-curvature, its relational expression is: | R1/R2|=0.38.

In the 5th embodiment capture optical frames group, the thing side surface radius-of-curvature of these second lens 920 is R3, be R4 as the side surface radius-of-curvature, its relational expression is: | R3/R4|=0.38.

In the 5th embodiment capture optical frames group, the thing side surface radius-of-curvature of these first lens 910 is R1, and the focal length of whole capture optical frames group is f, and its relational expression is: R1/f=0.45.

In the 5th embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and the focal length of these first lens 910 is f1, and its relational expression is: f/f1=1.61.

In the 5th embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and the focal length of the 3rd lens 930 is f3, and its relational expression is: f/f3=-0.79.

In the 5th embodiment capture optical frames group; This capture optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 960 places; The distance of the thing side surface 911 of these first lens 910 to this sense electronics optical element on optical axis is TTL; And the half the of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, and its relational expression is: TTL/ImgH=1.86.

The detailed optical data of the 5th embodiment is shown in Figure 21 table nine, and its aspherical surface data is shown in Figure 22 table ten, and wherein the unit of radius-of-curvature, thickness and focal length is mm, and HFOV is defined as the half the of maximum visual angle.

The 6th embodiment

Sixth embodiment of the invention sees also Figure 11, and the aberration curve of the 6th embodiment sees also Figure 12.The capture optical frames group of the 6th embodiment mainly is made up of four pieces of lens, is extremely comprised in regular turn as side by the thing side:

First lens 1110 of the positive refracting power of one tool, its thing side surface 1111 and be all convex surface as side surface 1112, its material is a plastic cement, the thing side surface 1111 of these first lens 1110, is all aspheric surface as side surface 1112;

Second lens 1120 of the negative refracting power of one tool, its thing side surface 1121 be that concave surface and picture side surface 1122 are convex surface, and its material is a plastic cement, the thing side surface 1121 of these second lens 1120, are all aspheric surface as side surface 1122;

The 3rd lens 1130 of the negative refracting power of one tool, its thing side surface 1131 be that concave surface and picture side surface 1132 are convex surface, and its material is a plastic cement, the thing side surface 1131 of the 3rd lens 1130, are all aspheric surface as side surface 1132;

The 4th lens 1140 of the negative refracting power of one tool; Its thing side surface 1141 is that convex surface and picture side surface 1142 are concave surface; Its material is a plastic cement; The thing side surface 1141 of the 4th lens 1140, be all aspheric surface, and the thing side surface 1141 of the 4th lens 1140, all be provided with at least one point of inflexion as side surface 1142 as side surface 1142;

One aperture 1100 places between object and this first lens 1110;

Other includes an infrared ray filtering optical filter 1150 and places looking like between a side surface 1142 and the imaging surface 1160 of the 4th lens 1140; The material of this infrared ray filtering optical filter 1150 is that glass and its do not influence the focal length of this capture optical frames group of the present invention.

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

In the 6th embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and its relational expression is: f=2.98 (millimeter).

In the 6th embodiment capture optical frames group, the f-number of whole capture optical frames group is Fno, and its relational expression is: Fno=2.05.

In the 6th embodiment capture optical frames group, the half angle of view of whole capture optical frames group is HFOV, and its relational expression is: HFOV=31.0 (degree).

In the 6th embodiment capture optical frames group, the abbe number of these first lens 1110 is V1, and the abbe number of these second lens 1120 is V2, and its relational expression is: V1-V2=32.5.

In the 6th embodiment capture optical frames group, the abbe number of these first lens 1110 is V1, and the abbe number of the 3rd lens 1130 is V3, and its relational expression is: V1-V3=0.0.

In the 6th embodiment capture optical frames group, the refractive index of these first lens 1110 is N1, and its relational expression is: N1=1.544.

In the 6th embodiment capture optical frames group, these first lens 1110 are T12 with the distance of these second lens 1120 on optical axis, and the focal length of whole capture optical frames group is f, and its relational expression is: (T12/f) * 100=11.74.

In the 6th embodiment capture optical frames group, the thickness of these second lens 1120 on optical axis is CT2, and the focal length of whole capture optical frames group is f, and its relational expression is: CT2/f=0.13.

In the 6th embodiment capture optical frames group, the thing side surface radius-of-curvature of these first lens 1110 is R1, be R2 as the side surface radius-of-curvature, its relational expression is: | R1/R2|=0.77.

In the 6th embodiment capture optical frames group, the thing side surface radius-of-curvature of these second lens 1120 is R3, be R4 as the side surface radius-of-curvature, its relational expression is: | R3/R4|=0.75.

In the 6th embodiment capture optical frames group, the thing side surface radius-of-curvature of these first lens 1110 is R1, and the focal length of whole capture optical frames group is f, and its relational expression is: R1/f=0.71.

In the 6th embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and the focal length of these first lens 1110 is f1, and its relational expression is: f/f1=1.29.

In the 6th embodiment capture optical frames group, the focal length of whole capture optical frames group is f, and the focal length of the 3rd lens 1130 is f3, and its relational expression is: f/f3=-0.05.

In the 6th embodiment capture optical frames group; This capture optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 1160 places; The distance of the thing side surface 1111 of these first lens 1110 to this sense electronics optical element on optical axis is TTL; And the half the of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, and its relational expression is: TTL/ImgH=2.22.

The detailed optical data of the 6th embodiment is shown in Figure 23 table ten one, and its aspherical surface data is shown in Figure 24 table ten two, and wherein the unit of radius-of-curvature, thickness and focal length is mm, and HFOV is defined as the half the of maximum visual angle.

Table one to table ten two (corresponding Figure 13 to Figure 24 respectively) is depicted as the different numerical value change tables of capture optical frames group embodiment of the present invention; 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, thus 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 25) is the numerical data of the corresponding correlationship formula of the present invention of each embodiment.

The above is merely specific embodiment of the present invention; And be not used in qualification protection scope of the present invention, for one of ordinary skill in the art, according to the embodiment of the invention; On embodiment and range of application, all can change to some extent, but all should be included within protection scope of the present invention.

Claims

1. a capture optical frames group is characterized in that, described capture optical frames group is extremely comprised as side by the thing side in regular turn:

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

Second lens of the negative refracting power of one tool, it is a convex surface as side surface;

One the 3rd lens, its thing side surface are concave surface, be convex surface as side surface, and the thing side surface of described the 3rd lens be aspheric surface as at least one surface in the side surface;

One the 4th lens, it is a concave surface as side surface, and the thing side surface of described the 4th lens be provided with at least one point of inflexion as at least one surface in the side surface; And

One aperture is to be arranged between object and described first lens;

Wherein, described first lens and the distance of described second lens on optical axis are T12, and the focal length of whole capture optical frames group is f, and the abbe number of described first lens is V1, and the abbe number of described the 3rd lens is V3, is to satisfy the following relationship formula:

0.5＜(T12/f)*100＜20；

23＜V1-V3；

The lens of tool refracting power are merely four in the described capture optical frames group.

2. capture optical frames group as claimed in claim 1 is characterized in that the thing side surface of described the 4th lens is a convex surface, the thing side surface of described the 4th lens and be all aspheric surface as side surface, and the material of described the 4th lens is a plastic cement.

3. capture optical frames group as claimed in claim 2 is characterized in that, described the 3rd lens tool is born refracting power.

4. capture optical frames group as claimed in claim 3 is characterized in that the focal length of described first lens is f1, is to satisfy the following relationship formula:

1.3＜f/f1＜2.5。

5. capture optical frames group as claimed in claim 4 is characterized in that, the thing side surface radius-of-curvature of described first lens is R1, is to satisfy the following relationship formula:

0.30＜R1/f＜0.50。

6. capture optical frames group as claimed in claim 5 is characterized in that, further satisfies the following relationship formula:

1.7＜f/f1＜2.3。

7. capture optical frames group as claimed in claim 6 is characterized in that the refractive index of described first lens is N1, is to satisfy the following relationship formula:

1.5＜N1＜1.6。

8. capture optical frames group as claimed in claim 6 is characterized in that, the thickness of described second lens on optical axis is CT2, is to satisfy the following relationship formula:

0.02＜CT2/f＜0.10。

9. capture optical frames group as claimed in claim 6 is characterized in that, the thing side surface radius-of-curvature of described second lens is R3, be R4 as the side surface radius-of-curvature, is to satisfy the following relationship formula:

0.10＜|R3/R4|＜0.50。

10. capture optical frames group as claimed in claim 1; It is characterized in that; Described capture optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it; The thing side surface of described first lens to the distance of described sense electronics optical element on optical axis is TTL, and the half the of described sense electronics optical element effective pixel area diagonal angle line length is ImgH, is to satisfy the following relationship formula:

TTL/ImgH＜2.0。

11. capture optical frames group as claimed in claim 5 is characterized in that the abbe number of described second lens is V2, is to satisfy the following relationship formula:

28＜V1-V2＜40。

12. capture optical frames group as claimed in claim 5 is characterized in that, described the 4th lens tool is born refracting power.

13. a capture optical frames group is characterized in that, described capture optical frames group is extremely comprised as side by the thing side in regular turn:

Second lens of the negative refracting power of one tool;

The 3rd lens of the negative refracting power of one tool, its thing side surface are concave surface, be convex surface as side surface, and the thing side surface of described the 3rd lens be aspheric surface as at least one surface in the side surface;

One aperture is to be arranged between object and described first lens;

Wherein, Described first lens and the distance of described second lens on optical axis are T12; The focal length of whole capture optical frames group is f, and the abbe number of described first lens is V1, and the abbe number of described the 3rd lens is V3; The thing side surface radius-of-curvature of described first lens is R1, be R2 as the side surface radius-of-curvature, be to satisfy the following relationship formula:

0.5＜(T12/f)*100＜20；

23＜V1-V3；

0.25＜|R1/R2|＜0.70；

14. capture optical frames group as claimed in claim 13 is characterized in that the thing side surface of described the 4th lens is a convex surface, the thing side surface of described the 4th lens and be all aspheric surface as side surface, and the material of described the 4th lens is a plastic cement.

15. capture optical frames group as claimed in claim 14 is characterized in that the focal length of described first lens is f1, is to satisfy the following relationship formula:

1.7＜f/f1＜2.3。

16. capture optical frames group as claimed in claim 15 is characterized in that the refractive index of described first lens is N1, the thickness of described second lens on optical axis is CT2, is to satisfy the following relationship formula:

1.5＜N1＜1.6；

0.02＜CT2/f＜0.10。

17. capture optical frames group as claimed in claim 16 is characterized in that, the thing side surface radius-of-curvature of described second lens is R3, be R4 as the side surface radius-of-curvature, is to satisfy the following relationship formula:

0.10＜|R3/R4|＜0.50。

18. capture optical frames group as claimed in claim 13; It is characterized in that; Described capture optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it; The thing side surface of described first lens to the distance of described sense electronics optical element on optical axis is TTL, and the half the of described sense electronics optical element effective pixel area diagonal angle line length is ImgH, is to satisfy the following relationship formula:

TTL/ImgH＜2.0。

19. capture optical frames group as claimed in claim 15 is characterized in that the thing side surface of described second lens is a concave surface.

20. capture optical frames group as claimed in claim 15 is characterized in that the abbe number of described second lens is V2, is to satisfy the following relationship formula:

28＜V1-V2＜40。

21. capture optical frames group as claimed in claim 15 is characterized in that, described the 4th lens tool is born refracting power.

22. a capture optical frames group is characterized in that, described capture optical frames group is extremely comprised as side by the thing side in regular turn:

One aperture is to be arranged between object and described first lens;

Wherein, described first lens and the distance of described second lens on optical axis are T12, and the focal length of whole capture optical frames group is f, and the focal length of described the 3rd lens is f3, is to satisfy the following relationship formula:

0.5＜(T12/f)*100＜20；

-1.2＜f/f3＜-0.005；

23. capture optical frames group as claimed in claim 22 is characterized in that the thing side surface of described the 4th lens is a convex surface, the thing side surface of described the 4th lens and be all aspheric surface as side surface, and the material of described the 4th lens is a plastic cement.

24. capture optical frames group as claimed in claim 22 is characterized in that, the thing side surface of described the 3rd lens and be all aspheric surface as side surface, and the material of described the 3rd lens is a plastic cement.

25. capture optical frames group as claimed in claim 24 is characterized in that the focal length of described first lens is f1, the thickness of described second lens on optical axis is CT2, is to satisfy the following relationship formula:

1.3＜f/f1＜2.5；

0.02＜CT2/f＜0.10。

26. capture optical frames group as claimed in claim 25 is characterized in that the refractive index of described first lens is N1, the thing side surface radius-of-curvature of described second lens is R3, be R4 as the side surface radius-of-curvature, is to satisfy the following relationship formula:

1.5＜N1＜1.6；

0.10＜|R3/R4|＜0.50。

27. capture optical frames group as claimed in claim 25 is characterized in that, described the 4th lens tool is born refracting power.

28. capture optical frames group as claimed in claim 27 is characterized in that the abbe number of described first lens is V1, the abbe number of described the 3rd lens is V3, is to satisfy the following relationship formula:

23＜V1-V3。

29. capture optical frames group as claimed in claim 22; It is characterized in that; Described capture optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it; The thing side surface of described first lens to the distance of described sense electronics optical element on optical axis is TTL, and the half the of described sense electronics optical element effective pixel area diagonal angle line length is ImgH, is to satisfy the following relationship formula:

TTL/ImgH＜2.0。