CN102375213A - Photographic optical lens group - Google Patents

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

Photo-optics eyeglass group

Technical field

The present invention relates to a kind of photo-optics eyeglass group, particularly about a kind of miniaturization photo-optics eyeglass group that is applied on the 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; And progressing greatly CCD) or two kinds of CMOS elements (Complementary Metal-OxideSemiconductor Sensor, CMOS Sensor), along with the semiconductor fabrication process technology; Make the Pixel Dimensions of photo-sensitive cell dwindle; Add now that electronic product is a development trend with the good and compact external form of function, therefore, the miniaturization phtographic lens that possesses good image quality becomes main flow in the market.

Existing high resolution miniaturization phtographic lens adopts the lens combination of four pieces of formulas, wherein more; First lens and second lens are often bonded to each other and become doublet (Doublet) with two pieces of glass spherical mirrors, in order to color difference eliminating, like United States Patent (USP) the 7th; Shown in 365, No. 920, but the method has its shortcoming; One of which, 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; 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 ofly possessing small size, high-quality, and the easy photo-optics eyeglass of manufacture craft group.

Summary of the invention

The present invention provides a kind of photo-optics eyeglass 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, its thing side surface are concave surface and are concave surface as side surface; The 3rd lens of the positive refracting power of one 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 a concave surface as side surface, and the thing side surface of the 4th lens and be all aspheric surface as side surface; Wherein, This photo-optics eyeglass group is provided with an aperture and a sense electronics optical element in addition; This aperture is arranged between object and this first lens, and this sense electronics optical element is arranged at the imaging surface place and supplies the object imaging, and the lens of tool refracting power are 4 in this photo-optics eyeglass group; The focal length of whole photo-optics eyeglass 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 first lens is R1; The thing side surface radius-of-curvature of the 3rd lens is R5; The thing side surface of these first lens to these second lens be Dr1r4 as the distance of side surface on optical axis, 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 the optical axis (the equivalent air conversion distance [Air Conversion Distance] of picture between side surface to this sense electronics optical element that comprises the 4th lens); The thing side surface of these first lens to this sense electronics optical element is TTL in the distance on the optical axis (the equivalent air as between side surface to this sense electronics optical element that comprises the 4th lens is changed distance), satisfies following relationship formula :-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 present invention provides a kind of photo-optics eyeglass 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, its thing side surface are concave surface and are concave surface as side surface; The 3rd lens of the positive refracting power of one 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 a concave surface as side surface, and the thing side surface of the 4th lens and be all aspheric surface as side surface; Wherein, the lens of tool refracting power are 4 in this photo-optics eyeglass group; The focal length of whole photo-optics eyeglass group is f; The focal length of the 3rd lens is f3, and the focal length of the 4th lens is f4, and the thing side surface radius-of-curvature of these 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, these first lens and the spacing distance of these second lens on optical axis are T12, satisfy following relationship formula :-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 present invention provides a kind of photo-optics eyeglass 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, its thing side surface are concave surface and are concave surface as side surface; The 3rd lens of the positive refracting power of one 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 the side surface; And the 4th lens of the negative refracting power of a tool, it is a concave surface as side surface, and the 4th lens be provided with at least one point of inflexion as side surface; Wherein, This photo-optics eyeglass group is provided with an aperture and a sense electronics optical element in addition; This aperture is arranged between object and this first lens, and this sense electronics optical element is arranged at the imaging surface place and supplies the object imaging, and the lens of tool refracting power are 4 in this photo-optics eyeglass group; The focal length of whole photo-optics eyeglass 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 first lens is R1; These 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 the optical axis (the equivalent air conversion distance of picture between side surface to this sense electronics optical element that comprises the 4th lens); The thing side surface of these first lens to this sense electronics optical element is TTL in the distance on the optical axis (the equivalent air as between side surface to this sense electronics optical element that comprises the 4th lens is changed distance), satisfies the following relationship formula: | 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 through the configuration mode of above-mentioned mirror group, and can obtain higher resolving power.

In the photo-optics eyeglass 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 photo-optics eyeglass group; This second lens tool is born refracting power, and the aberration that can be effectively first lens of the positive refracting power of tool be produced is done revisal, can help the aberration of update the system simultaneously; The positive refracting power of the 3rd lens tool can effectively distribute the refracting power of these first lens, to reduce the susceptibility of system; The 4th lens tool is born refracting power, and the principal point (Principal Point) that can make this photo-optics eyeglass group helps shortening the optics total length of system, to keep the miniaturization of camera lens away from imaging surface.

In the photo-optics eyeglass group of the present invention, this aperture can place between object and this first lens or between these first lens and this second lens.Through these first lens and the 3rd lens positive refracting power is provided, and aperture is placed the object side near this photo-optics eyeglass group, can effectively shorten the total length of this photo-optics eyeglass group; In addition; Above-mentioned configuration can make the outgoing pupil (Exit Pupil) of this photo-optics eyeglass 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 solid-state electronic photo-sensitive cell at present, and it will make the sensitization susceptibility of sense electronics optical element improve, and the minimizing system produces the possibility at dark angle; In addition; Can the 3rd lens or the 4th lens be provided with the point of inflexion, the light that can more effectively suppress from the axle visual field is incident on the angle on the 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 the system sensitivity and obtain good balance.Therefore photo-optics eyeglass group of the present invention can be arranged at aperture between object and this second lens; It helps between heart characteristic far away and desensitising, obtaining good balance; 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 photo-optics eyeglass group shorter.

In the photo-optics eyeglass group of the present invention, the thing side surface of these first lens is a convex surface and when being convex surface as side surface, can effectively strengthen the refracting power configuration of these first lens, and then make the optics total length of this optical mirror slip group become shorter.When the thing side surface of these first lens is a 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 elevator system.The thing side surface of these second lens is a 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 photo-optics eyeglass group.The thing side surface of the 3rd lens is a 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 a concave surface and when being concave surface as side surface, and the principal point that can make optical system helps shortening the optics total length of system further from imaging surface, 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 the astigmatism and the higher order aberratons of update the system.

Description of drawings

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

Figure 1A is the optical system synoptic 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 synoptic 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 synoptic 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 synoptic 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 synoptic 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 synoptic diagram of sixth embodiment of the invention;

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

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

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

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

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

Figure 11 is a 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 a table seven, is the optical data of fourth embodiment of the invention;

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

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

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

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

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

Figure 19 is a table ten three, is the numeric data of the present invention's 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

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 photo-optics eyeglass 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 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 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 second lens on optical axis are T12

Thing side surface to the second lens of first lens be Dr1r4 as the distance of side surface on optical axis

Aperture to sense electronics optical element is SL in the distance on the optical axis (the equivalent air as between side surface to sense electronics optical element that comprises the 4th lens is changed distance)

Thing side surface to the sense electronics optical element of first lens is TTL in the distance on the optical axis (the equivalent air as between side surface to sense electronics optical element that comprises the 4th lens is changed distance)

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 explained further details below in conjunction with accompanying drawing.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 photo-optics eyeglass 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, its thing side surface are concave surface and are concave surface as side surface; The 3rd lens of the positive refracting power of one 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 a concave surface as side surface, and the thing side surface of the 4th lens and be all aspheric surface as side surface; Wherein, This photo-optics eyeglass group is provided with an aperture and a sense electronics optical element in addition; This aperture is arranged between object and this first lens, and this sense electronics optical element is arranged at the imaging surface place and supplies the object imaging, and the lens of tool refracting power are 4 in this photo-optics eyeglass group; The focal length of whole photo-optics eyeglass group is f; The focal length of the 3rd lens is f3, and the focal length of the 4th lens is f4, and the thing side surface radius-of-curvature of these first lens is R1; The thing side surface radius-of-curvature of the 3rd lens is R5; The thing side surface of these first lens to these second lens be Dr1r4 as the distance of side surface on optical axis, the thickness of the 3rd lens on optical axis is CT3, the distance of this aperture to this sense electronics optical element on optical axis is SL; The distance of the thing side surface of these first lens to this sense electronics optical element on optical axis is TTL, satisfies following relationship formula :-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 sheet group satisfies following relationship formula :-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 the astigmatism generation; Preferably, satisfy following relationship formula :-0.55＜R5/f＜-0.40.

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

When aforementioned photographic optical lens sheet group satisfies following relationship formula :-0.83＜f4/f＜-0.40, can effectively revise the aberration that the 3rd lens are produced, with the elevator system image quality; Preferably, satisfy following relationship formula :-0.77＜f4/f＜-0.45.

When aforementioned photographic optical lens sheet group satisfies following relationship formula: 1.00＜Dr1r4/CT3＜1.75, can effectively distribute the spatial configuration of this photo-optics eyeglass group, to help the elevator system image quality.

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

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

In the aforementioned photo-optics eyeglass of the present invention group, preferably, the material of these second lens is a plastic cement, and the lens of plastic cement material not only help the making of non-spherical lens, more can effectively reduce production costs.

In the aforementioned photo-optics eyeglass of the present invention group; Preferably; The thing side surface of the 4th lens is a concave surface, and when being all concave surface when the thing side surface of the 4th lens and as side surface, the principal point that can make optical system is further from imaging surface; Help shortening the optics total length of system, to promote the miniaturization of camera lens.

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

In the aforementioned photo-optics eyeglass of the present invention group, preferably, the thing side surface radius-of-curvature of these second lens is R3, and the focal length of whole photo-optics eyeglass group is f, satisfies following relationship formula :-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 elevator system image quality.

In the aforementioned photo-optics eyeglass of the present invention group, preferably, the thing side surface radius-of-curvature of the 4th lens is R7, and the focal length of whole photo-optics eyeglass group is f, satisfies the following relationship formula: | 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 are produced can be revised.

In the aforementioned photo-optics eyeglass of the present invention group, preferably, the focal length of the 3rd lens is f3, and the focal length of the 4th lens is f4, satisfies the following relationship formula: 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 photo-optics eyeglass of the present invention group, 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 the following relationship formula: 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 photo-optics eyeglass group.

In the aforementioned photo-optics eyeglass of the present invention group; 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, satisfies following relationship formula: TTL/ImgH＜1.8.When TTL/ImgH satisfies the above-mentioned relation formula, help keeping the miniaturization of this photo-optics eyeglass group, to be equipped on the frivolous electronic product.

On the other hand, the present invention provides a kind of photo-optics eyeglass 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, its thing side surface are concave surface and are concave surface as side surface; The 3rd lens of the positive refracting power of one 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 a concave surface as side surface, and the thing side surface of the 4th lens and be all aspheric surface as side surface; Wherein, the lens of tool refracting power are 4 in this photo-optics eyeglass group; The focal length of whole photo-optics eyeglass group is f; The focal length of the 3rd lens is f3, and the focal length of the 4th lens is f4, and the thing side surface radius-of-curvature of these 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, these first lens and the spacing distance of these second lens on optical axis are T12, satisfy following relationship formula :-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.

When aforementioned photographic optical lens sheet group satisfies following relationship formula :-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 elevator system image quality.

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

When aforementioned photographic optical lens sheet group satisfies following relationship formula :-0.83＜f4/f＜-0.40, can effectively revise the aberration that the 3rd lens are produced, with the elevator system image quality; Preferably, satisfy following relationship formula :-0.77＜f4/f＜-0.45.

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

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

In the aforementioned photo-optics eyeglass of the present invention group; The distance of this aperture to this sense electronics optical element on optical axis is SL; The distance of the thing side surface of these first lens to this sense electronics optical element on optical axis is TTL, preferably, satisfies following relationship formula: 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 photo-optics eyeglass group shorter.

In the aforementioned photo-optics eyeglass of the present invention group, the thing side surface radius-of-curvature of the 4th lens is R7, and the focal length of whole photo-optics eyeglass group is f, preferably, satisfies the following relationship formula: | 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 are produced can be revised.

In the aforementioned photo-optics eyeglass of the present invention group; The thing side surface of these first lens to these second lens be Dr1r4 as the distance of side surface on optical axis; The thickness of the 3rd lens on optical axis is CT3, preferably, satisfies following relationship formula: 1.00＜Dr1r4/CT3＜1.75.When Dr1r4/CT3 satisfies the above-mentioned relation formula, can effectively distribute the spatial configuration of this photo-optics eyeglass group, to help the elevator system image quality.

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

In the aforementioned photo-optics eyeglass of the present invention group, the focal length of the 3rd lens is f3, and the focal length of the 4th lens is f4, preferably, satisfies the following relationship formula: 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 present invention provides a kind of photo-optics eyeglass 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, its thing side surface are concave surface and are concave surface as side surface; The 3rd lens of the positive refracting power of one 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 the side surface; And the 4th lens of the negative refracting power of a tool, it is a concave surface as side surface, and the 4th lens be provided with at least one point of inflexion as side surface; Wherein, This photo-optics eyeglass group is provided with an aperture and a sense electronics optical element in addition; This aperture is arranged between object and this first lens, and this sense electronics optical element is arranged at the imaging surface place and supplies the object imaging, and the lens of tool refracting power are 4 in this photo-optics eyeglass group; The focal length of whole photo-optics eyeglass group is f, and the focal length of the 3rd lens is f3, and the focal length of the 4th lens is f4; The thing side surface radius-of-curvature of these first lens is R1; These first lens be R2 as the side surface radius-of-curvature, the thing side surface radius-of-curvature of the 4th lens is R7, the distance of this aperture to this sense electronics optical element on optical axis is SL; The distance of the thing side surface of these first lens to this sense electronics optical element on optical axis is TTL, satisfies the following relationship formula: | 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 sheet group satisfies the following relationship formula: | R1/R2|＜0.15 can help the revisal of system's spherical aberration; Preferably, satisfy the following relationship formula: | R1/R2|＜0.07.

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

When aforementioned photographic optical lens sheet group satisfies following relationship formula :-0.83＜f4/f＜-0.40, can effectively revise the aberration that the 3rd lens are produced, with the elevator system image quality.

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

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

In the aforementioned photo-optics eyeglass of the present invention group, preferably, the material of these first lens is a glass; If the lens material is a glass; Then can increase the degree of freedom of system refracting power configuration, and glass material helps system's opposing envirment factor and change, make the image quality of optical system comparatively stable.

In the aforementioned photo-optics eyeglass of the present invention group; Preferably the thing side surface of the 4th lens is a concave surface; When being all concave surface when the thing side surface of the 4th lens and as side surface; The principal point that can make optical system helps shortening the optics total length of system further from imaging surface, to promote the miniaturization of camera lens.

In the aforementioned photo-optics eyeglass 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, satisfies following relationship formula: 31.0＜V1-V2＜42.0.When V1-V2 satisfies the above-mentioned relation formula, can help the correction of aberration in this photo-optics eyeglass group.

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

In the photo-optics eyeglass 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 total length of photo-optics eyeglass group of the present invention.

In the photo-optics eyeglass group of the present invention,, represent that then this lens surface is a convex surface at paraxial place if lens surface is a convex surface; If lens surface is a concave surface, represent that then this lens surface is a concave surface at paraxial place.

Photo-optics eyeglass group of the present invention will specify through following specific embodiment conjunction with figs..First embodiment:

The synoptic diagram of photo-optics eyeglass group first embodiment of the present invention sees also Figure 1A, and the aberration curve of first embodiment sees also Figure 1B.The photo-optics eyeglass 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 are that convex surface and picture side surface 112 are concave surface, and its material is a plastic cement, the thing side surface 111 of these first lens 110 be 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 concave surface, and its material is a plastic cement, the thing side surface 121 of these second lens 120 and be all aspheric surface as side surface 122;

The 3rd lens 130 of the positive refracting power of one tool; Its thing side surface 131 is that concave surface and picture side surface 132 are convex surface; Its material is a 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 the 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 a 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 photo-optics eyeglass group is provided with an aperture 100 in addition and is arranged 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; And a cover glass (Cover-glass) 170 places 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 influence the focal length of photo-optics eyeglass group of the present invention, and this photo-optics eyeglass group is provided with a sense electronics optical element in addition and supplies object imaging on it at these imaging surface 160 places.

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

$X\left(Y\right)=({\mathrm{<figure-callout\; id="2"\; label="Y"\; filenames="HSA00000225601900101.png,HSA00000225601900131.png"\; state="\{\{state\}\}">Y</figure-callout>}}^2/R)/(1+\mathrm{sqrt}(1-(1+k)*{(Y/R)}^2))+\underset{i}{\mathrm{\&Sigma;}}\left(\mathrm{Ai}\right)*\left(Y^i\right)$

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 photo-optics eyeglass group, the focal length of whole photo-optics eyeglass group is f, and its relational expression is: f=3.34 (millimeter).

In the first embodiment photo-optics eyeglass group, the f-number (f-number) of whole photo-optics eyeglass group is Fno, and its relational expression is: Fno=2.81.

In the first embodiment photo-optics eyeglass group, the half the of maximum visual angle is HFOV in the whole photo-optics eyeglass group, and its relational expression is: HFOV=34.0 (degree).

In the first embodiment photo-optics eyeglass 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=33.1.

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

In the first embodiment photo-optics eyeglass group; The thing side surface 111 of these first lens 110 to these second lens 120 be Dr1r4 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 photo-optics eyeglass group, the thing side surface radius-of-curvature of these first lens 110 is R1, and the focal length of whole photo-optics eyeglass group is f, and its relational expression is: R1/f=0.33.

In the first embodiment photo-optics eyeglass group, the thing side surface radius-of-curvature of these first lens 110 is R1 and is R2 as the side surface radius-of-curvature that its relational expression is: | R1/R2|=0.13.

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

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

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

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

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

In the first embodiment photo-optics eyeglass 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 photo-optics eyeglass of the present invention group, the distance of this aperture 100 to this sense electronics optical element on optical axis is SL, and 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 its relational expression is: SL/TTL=0.95.

In the first embodiment photo-optics eyeglass group; 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=1.68.

The detailed optical data of first embodiment is shown in Fig. 7 table one, and its aspherical surface data is 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 the half the of maximum visual angle.

Second embodiment:

The synoptic diagram of photo-optics eyeglass group second embodiment of the present invention sees also Fig. 2 A, and the aberration curve of second embodiment sees also Fig. 2 B.The photo-optics eyeglass 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 210 of the positive refracting power of one tool, its thing side surface 211 are that convex surface and picture side surface 212 are convex surface, and its material is a plastic cement, the thing side surface 211 of these first lens 210 be all aspheric surface as side surface 212;

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 a plastic cement, the thing side surface 221 of these second lens 220 and be all aspheric surface as side surface 222;

The 3rd lens 230 of the positive refracting power of one tool; Its thing side surface 231 is that concave surface and picture side surface 232 are convex surface; Its material is a 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 the 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 a 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 photo-optics eyeglass group is provided with an aperture 200 in addition and is arranged between object and this first lens 210;

Other includes an infrared ray filtering optical filter 250 and places looking like between a side surface 242 and the 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 influence the focal length of photo-optics eyeglass group of the present invention, and this photo-optics eyeglass group is provided with a sense electronics optical element in addition and supplies object imaging on it at these imaging surface 260 places.

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

In the second embodiment photo-optics eyeglass group, the focal length of whole photo-optics eyeglass group is f, and its relational expression is: f=3.05 (millimeter).

In the second embodiment photo-optics eyeglass group, the f-number of whole photo-optics eyeglass group is Fno, and its relational expression is: Fno=2.45.

In the second embodiment photo-optics eyeglass group, the half the of maximum visual angle is HFOV in the whole photo-optics eyeglass group, and its relational expression is: HFOV=37.0 (degree).

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

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

In the second embodiment photo-optics eyeglass group; The thing side surface 211 of these first lens 210 to these second lens 220 be Dr1r4 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 photo-optics eyeglass group, the thing side surface radius-of-curvature of these first lens 210 is R1, and the focal length of whole photo-optics eyeglass group is f, and its relational expression is: R1/f=0.42.

In the second embodiment photo-optics eyeglass group, the thing side surface radius-of-curvature of these first lens 210 is R1 and is R2 as the side surface radius-of-curvature that its relational expression is: | R1/R2|=0.21.

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

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

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

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

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

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

In the second embodiment photo-optics eyeglass group; The distance of the thing side surface 211 of these first lens 210 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=1.57.

The detailed optical data of second embodiment is shown in Fig. 9 table three, and its aspherical surface data is 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 the half the of maximum visual angle.

The 3rd embodiment:

The synoptic diagram of photo-optics eyeglass 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 photo-optics eyeglass 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 310 of the positive refracting power of one tool, its thing side surface 311 are that convex surface and picture side surface 312 are convex surface, and its material is a plastic cement, the thing side surface 311 of these first lens 310 be all aspheric surface as side surface 312;

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 a plastic cement, the thing side surface 321 of these second lens 320 and be all aspheric surface as side surface 322;

The 3rd lens 330 of the positive refracting power of one tool, its thing side surface 331 are 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 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 a 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 photo-optics eyeglass group is provided with an aperture 300 in addition and is arranged 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 photo-optics eyeglass group of the present invention, and this photo-optics eyeglass group is provided with a sense electronics optical element in addition and supplies object imaging on it at these imaging surface 360 places.

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

In the 3rd embodiment photo-optics eyeglass group, the focal length of whole photo-optics eyeglass group is f, and its relational expression is: f=5.40 (millimeter).

In the 3rd embodiment photo-optics eyeglass group, the f-number of whole photo-optics eyeglass group is Fno, and its relational expression is: Fno=2.85.

In the 3rd embodiment photo-optics eyeglass group, the half the of maximum visual angle is HFOV in the whole photo-optics eyeglass group, and its relational expression is: HFOV=33.5 (degree).

In the 3rd embodiment photo-optics eyeglass 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=32.5.

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

In the 3rd embodiment photo-optics eyeglass group; The thing side surface 311 of these first lens 310 to these second lens 320 be Dr1r4 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 photo-optics eyeglass group, the thing side surface radius-of-curvature of these first lens 310 is R1, and the focal length of whole photo-optics eyeglass group is f, and its relational expression is: R1/f=0.35.

In the 3rd embodiment photo-optics eyeglass group, the thing side surface radius-of-curvature of these first lens 310 is R1 and is R2 as the side surface radius-of-curvature that its relational expression is: | R1/R2|=0.02.

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

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

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

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

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

In the 3rd embodiment photo-optics eyeglass 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 photo-optics eyeglass of the present invention group, the distance of this aperture 300 to this sense electronics optical element on optical axis is SL, and 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 its relational expression is: SL/TTL=0.96.

In the 3rd embodiment photo-optics eyeglass group; 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=1.67.

The detailed optical data of the 3rd embodiment is shown in Figure 11 table five, and its aspherical surface data is 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 the half the of maximum visual angle.

The 4th embodiment:

The synoptic diagram of photo-optics eyeglass 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 photo-optics eyeglass 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 410 of the positive refracting power of one tool, its thing side surface 411 are that convex surface and picture side surface 412 are concave surface, and its material is a glass, the thing side surface 411 of these first lens 410 be all sphere as side surface 412;

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 a plastic cement, the thing side surface 421 of these second lens 420 and be all aspheric surface as side surface 422;

The 3rd lens 430 of the positive refracting power of one tool; Its thing side surface 431 is that concave surface and picture side surface 432 are convex surface; Its material is a 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 the 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 a 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 photo-optics eyeglass group is provided with an aperture 400 in addition and is arranged between object and this first lens 410;

Other includes an infrared ray filtering optical filter 450 and places looking like between a side surface 442 and the imaging surface 460 of the 4th lens 440; And a cover glass 470 places 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 influence the focal length of photo-optics eyeglass group of the present invention, and this photo-optics eyeglass group is provided with a sense electronics optical element in addition and supplies object imaging on it at these imaging surface 460 places.

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

In the 4th embodiment photo-optics eyeglass group, the focal length of whole photo-optics eyeglass group is f, and its relational expression is: f=4.40 (millimeter).

In the 4th embodiment photo-optics eyeglass group, the f-number of whole photo-optics eyeglass group is Fno, and its relational expression is: Fno=2.83.

In the 4th embodiment photo-optics eyeglass group, the half the of maximum visual angle is HFOV in the whole photo-optics eyeglass group, and its relational expression is: HFOV=33.0 (degree).

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

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

In the 4th embodiment photo-optics eyeglass group; The thing side surface 411 of these first lens 410 to these second lens 420 be Dr1r4 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 photo-optics eyeglass group, the thing side surface radius-of-curvature of these first lens 410 is R1, and the focal length of whole photo-optics eyeglass group is f, and its relational expression is: R1/f=0.54.

In the 4th embodiment photo-optics eyeglass group, the thing side surface radius-of-curvature of these first lens 410 is R1 and is R2 as the side surface radius-of-curvature that its relational expression is: | R1/R2|=0.06.

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

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

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

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

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

In the 4th embodiment photo-optics eyeglass 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 photo-optics eyeglass of the present invention group, the distance of this aperture 400 to this sense electronics optical element on optical axis is SL, and the distance of the thing side surface 411 of these first lens 410 to this sense electronics optical element on optical axis is TTL, and its relational expression is: SL/TTL=0.99.

In the 4th embodiment photo-optics eyeglass group; The distance of the thing side surface 411 of these first lens 410 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=1.93.

The detailed optical data of the 4th embodiment is shown in Figure 13 table seven, and its aspherical surface data is 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 the half the of maximum visual angle.

The 5th embodiment:

The synoptic diagram of photo-optics eyeglass 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 photo-optics eyeglass 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 510 of the positive refracting power of one tool, its thing side surface 511 are that convex surface and picture side surface 512 are concave surface, and its material is a glass, the thing side surface 511 of these first lens 510 be all sphere as side surface 512;

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 a plastic cement, the thing side surface 521 of these second lens 520 and be all aspheric surface as side surface 522;

The 3rd lens 530 of the positive refracting power of one tool; Its thing side surface 531 is that concave surface and picture side surface 532 are convex surface; Its material is a 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 the 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 a 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 photo-optics eyeglass group is provided with an aperture 500 in addition and is arranged 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; And a cover glass 570 places 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 influence the focal length of photo-optics eyeglass group of the present invention, and this photo-optics eyeglass group is provided with a sense electronics optical element in addition and supplies object imaging on it at these imaging surface 560 places.

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

In the 5th embodiment photo-optics eyeglass group, the focal length of whole photo-optics eyeglass group is f, and its relational expression is: f=4.41 (millimeter).

In the 5th embodiment photo-optics eyeglass group, the f-number of whole photo-optics eyeglass group is Fno, and its relational expression is: Fno=2.83.

In the 5th embodiment photo-optics eyeglass group, the half the of maximum visual angle is HFOV in the whole photo-optics eyeglass group, and its relational expression is: HFOV=33.0 (degree).

In the 5th embodiment photo-optics eyeglass 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=31.3.

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

In the 5th embodiment photo-optics eyeglass group; The thing side surface 511 of these first lens 510 to these second lens 520 be Dr1r4 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 photo-optics eyeglass group, the thing side surface radius-of-curvature of these first lens 510 is R1, and the focal length of whole photo-optics eyeglass group is f, and its relational expression is: R1/f=0.54.

In the 5th embodiment photo-optics eyeglass group, the thing side surface radius-of-curvature of these first lens 510 is R1 and is R2 as the side surface radius-of-curvature that its relational expression is: | R1/R2|=0.06.

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

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

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

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

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

In the 5th embodiment photo-optics eyeglass 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 photo-optics eyeglass of the present invention group, the distance of this aperture 500 to this sense electronics optical element on optical axis is SL, and 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 its relational expression is: SL/TTL=0.98.

In the 5th embodiment photo-optics eyeglass group; 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=1.94.

The detailed optical data of the 5th embodiment is shown in Figure 15 table nine, and its aspherical surface data is 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 the half the of maximum visual angle.

The 6th embodiment:

The synoptic diagram of photo-optics eyeglass 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 photo-optics eyeglass 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 610 of the positive refracting power of one tool, its thing side surface 611 are that convex surface and picture side surface 612 are convex surface, and its material is a plastic cement, the thing side surface 611 of these first lens 610 be all aspheric surface as side surface 612;

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 a plastic cement, the thing side surface 621 of these second lens 620 and be all aspheric surface as side surface 622;

The 3rd lens 630 of the positive refracting power of one tool, its thing side surface 631 are that concave surface and picture side surface 632 are convex surface, and its material is a 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 a 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 photo-optics eyeglass group is provided with an aperture 600 in addition and is arranged between object and this first lens 610;

Other includes an infrared ray filtering optical filter 650 and places looking like between a side surface 642 and the imaging surface 660 of the 4th lens 640; And a cover glass 670 places 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 influence the focal length of photo-optics eyeglass group of the present invention, and this photo-optics eyeglass group is provided with a sense electronics optical element in addition and supplies object imaging on it at these imaging surface 660 places.

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

In the 6th embodiment photo-optics eyeglass group, the focal length of whole photo-optics eyeglass group is f, and its relational expression is: f=3.42 (millimeter).

In the 6th embodiment photo-optics eyeglass group, the f-number of whole photo-optics eyeglass group is Fno, and its relational expression is: Fno=2.83.

In the 6th embodiment photo-optics eyeglass group, the half the of maximum visual angle is HFOV in the whole photo-optics eyeglass group, and its relational expression is: HFOV=33.7 (degree).

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

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

In the 6th embodiment photo-optics eyeglass group; The thing side surface 611 of these first lens 610 to these second lens 620 be Dr1r4 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 photo-optics eyeglass group, the thing side surface radius-of-curvature of these first lens 610 is R1, and the focal length of whole photo-optics eyeglass group is f, and its relational expression is: R1/f=0.35.

In the 6th embodiment photo-optics eyeglass group, the thing side surface radius-of-curvature of these first lens 610 is R1 and is R2 as the side surface radius-of-curvature that its relational expression is: | R1/R2|=0.01.

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

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

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

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

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

In the 6th embodiment photo-optics eyeglass 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 photo-optics eyeglass of the present invention group, the distance of this aperture 600 to this sense electronics optical element on optical axis is SL, and the distance of the thing side surface 611 of these first lens 610 to this sense electronics optical element on optical axis is TTL, and its relational expression is: SL/TTL=0.96.

In the 6th embodiment photo-optics eyeglass group; The distance of the thing side surface 611 of these first lens 610 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=1.70.

The detailed optical data of the 6th embodiment is shown in Figure 17 table ten one, and its aspherical surface data is 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 the half the of maximum visual angle.

Table one to table ten two (corresponding diagram 7 is to Figure 18 respectively) is depicted as the different numerical value change tables of photo-optics eyeglass 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 19) is the numeric data of the corresponding correlationship formula of the present invention of each embodiment.

Above-described specific embodiment; The object of the invention, technical scheme and beneficial effect have been carried out further explain, and institute it should be understood that the above is merely specific embodiment of the present invention; And be not used in qualification protection scope of the present invention; All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (25)

1. a photo-optics eyeglass group is characterized in that, described photo-optics eyeglass 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, its thing side surface are concave surface and are concave surface as side surface;

The 3rd lens of the positive refracting power of one 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 a concave surface as side surface, and the thing side surface of said the 4th lens and be all aspheric surface as side surface;

Wherein, Said photo-optics eyeglass group is provided with an aperture and a sense electronics optical element in addition; Said aperture is arranged between object and said first lens, and said sense electronics optical element is arranged at the imaging surface place and supplies the object imaging, and the lens of tool refracting power are 4 in the said photo-optics eyeglass group; The focal length of whole photo-optics eyeglass group is f; The focal length of said the 3rd lens is f3, and the focal length of said the 4th lens is f4, and the thing side surface radius-of-curvature of said first lens is R1; The thing side surface radius-of-curvature of said the 3rd lens is R5; The thing side surface of said first lens to said second lens be Dr1r4 as the distance of side surface on optical axis, the thickness of said the 3rd lens on optical axis is CT3, said aperture to the distance of said sense electronics optical element on optical axis be SL; The thing side surface of said first lens to the distance of said sense electronics optical element on optical axis is TTL, satisfies the following relationship formula:

-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. photo-optics eyeglass group as claimed in claim 1 is characterized in that the material of said second lens is a plastic cement, and has air clearance each other between said four pieces of lens.

3. photo-optics eyeglass group as claimed in claim 2 is characterized in that, the thing side surface radius-of-curvature of said second lens is R3, and the focal length of whole photo-optics eyeglass group is f, satisfies the following relationship formula:

-18.0＜R3/f＜-2.5。

4. photo-optics eyeglass group as claimed in claim 3 is characterized in that, the thing side surface radius-of-curvature of said the 3rd lens is R5, and the focal length of whole photo-optics eyeglass group is f, satisfies the following relationship formula:

-0.55＜R5/f＜-0.40。

5. photo-optics eyeglass group as claimed in claim 1 is characterized in that, the thing side surface radius-of-curvature of said the 4th lens is R7, and the focal length of whole photo-optics eyeglass group is f, satisfies the following relationship formula:

|R7/f|＞1.3。

6. photo-optics eyeglass group as claimed in claim 5 is characterized in that the focal length of said the 3rd lens is f3, and the focal length of whole photo-optics eyeglass group is f, satisfies the following relationship formula:

0.45＜f3/f＜0.77。

7. photo-optics eyeglass group as claimed in claim 6 is characterized in that the focal length of said the 4th lens is f4, and the focal length of whole photo-optics eyeglass group is f, satisfies the following relationship formula:

-0.77＜f4/f＜-0.45。

8. photo-optics eyeglass group as claimed in claim 1 is characterized in that the thing side surface of said the 4th lens is a concave surface.

9. photo-optics eyeglass group as claimed in claim 8 is characterized in that the focal length of said the 3rd lens is f3, and the focal length of said the 4th lens is f4, satisfies the following relationship formula:

0.9＜|f3/f4|＜1.1。

10. photo-optics eyeglass group as claimed in claim 6 is characterized in that, the thing side surface radius-of-curvature of said the 3rd lens is R5, said the 3rd lens be R6 as the side surface radius-of-curvature, satisfy the following relationship formula:

2.25＜(R5+R6)/(R5-R6)＜5.00。

11. photo-optics eyeglass group as claimed in claim 1; It is characterized in that; The thing side surface of said first lens to the distance of said sense electronics optical element on optical axis is TTL, and the half the of said sense electronics optical element effective pixel area diagonal angle line length is ImgH, satisfies the following relationship formula:

TTL/ImgH＜1.8。

12. a photo-optics eyeglass group is characterized in that, described photo-optics eyeglass 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, its thing side surface are concave surface and are concave surface as side surface;

The 3rd lens of the positive refracting power of one 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 a concave surface as side surface, and the thing side surface of said the 4th lens and be all aspheric surface as side surface;

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

-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。

13. photo-optics eyeglass group as claimed in claim 12 is characterized in that the focal length of said the 3rd lens is f3, the focal length of whole photo-optics eyeglass group is f, satisfies the following relationship formula:

0.45＜f3/f＜0.77。

14. photo-optics eyeglass group as claimed in claim 13; It is characterized in that; Said photo-optics eyeglass group is provided with an aperture and a sense electronics optical element in addition, and said sense electronics optical element is arranged at the imaging surface place and supplies the object imaging, and said aperture to the distance of said sense electronics optical element on optical axis is SL; The thing side surface of said first lens to the distance of said sense electronics optical element on optical axis is TTL, satisfies the following relationship formula:

0.9＜SL/TTL＜1.1。

15. photo-optics eyeglass group as claimed in claim 14 is characterized in that, the thing side surface radius-of-curvature of said the 4th lens is R7, and the focal length of whole photo-optics eyeglass group is f, satisfies the following relationship formula:

|R7/f|＞1.3。

16. photo-optics eyeglass group as claimed in claim 15 is characterized in that the focal length of said the 4th lens is f4, the focal length of whole photo-optics eyeglass group is f, satisfies the following relationship formula:

-0.77＜f4/f＜-0.45。

17. photo-optics eyeglass group as claimed in claim 13; It is characterized in that; The thing side surface of said first lens to said second lens be Dr1r4 as the distance of side surface on optical axis, the thickness of said the 3rd lens on optical axis is CT3, satisfies the following relationship formula:

1.00＜Dr1r4/CT3＜1.75。

18. photo-optics eyeglass group as claimed in claim 17 is characterized in that, the thing side surface radius-of-curvature of said first lens is R1, said first lens be R2 as the side surface radius-of-curvature, satisfy the following relationship formula:

|R1/R2|＜0.15。

19. photo-optics eyeglass group as claimed in claim 12 is characterized in that the focal length of said the 3rd lens is f3, the focal length of said the 4th lens is f4, satisfies the following relationship formula:

0.9＜|f3/f4|＜1.1。

20. a photo-optics eyeglass group is characterized in that, said photo-optics eyeglass 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, its thing side surface are concave surface and are concave surface as side surface;

The 3rd lens of the positive refracting power of one tool, its thing side surface are concave surface and are convex surface as side surface, and the thing side surface of said the 3rd lens be provided with at least one point of inflexion as at least one surface in the side surface; And

The 4th lens of the negative refracting power of one tool, it is a concave surface as side surface, and said the 4th lens be provided with at least one point of inflexion as side surface;

Wherein, Said photo-optics eyeglass group is provided with an aperture and a sense electronics optical element in addition; Said aperture is arranged between object and said first lens, and said sense electronics optical element is arranged at the imaging surface place and supplies the object imaging, and the lens of tool refracting power are 4 in the said photo-optics eyeglass group; The focal length of whole photo-optics eyeglass group is f; The focal length of said the 3rd lens is f3; The focal length of said the 4th lens is f4, and the thing side surface radius-of-curvature of said first lens is R1, said first lens be R2 as the side surface radius-of-curvature; The thing side surface radius-of-curvature of said the 4th lens is R7; Said aperture to the distance of said sense electronics optical element on optical axis is SL, and the thing side surface of said first lens to the distance of said sense electronics optical element on optical axis is TTL, satisfies the following relationship formula:

|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。

21. photo-optics eyeglass group as claimed in claim 20 is characterized in that the focal length of said the 3rd lens is f3, the focal length of whole photo-optics eyeglass group is f, satisfies the following relationship formula:

0.45＜f3/f＜0.77。

22. photo-optics eyeglass group as claimed in claim 21 is characterized in that the abbe number of said first lens is V1, the abbe number of said second lens is V2, satisfies the following relationship formula:

31.0＜V1-V2＜42.0。

23. photo-optics eyeglass group as claimed in claim 22 is characterized in that, said first lens and the spacing distance of said second lens on optical axis are T12, and the focal length of whole photo-optics eyeglass group is f, satisfies the following relationship formula:

0.5＜(T12/f)*100＜4.0。

24. photo-optics eyeglass group as claimed in claim 22 is characterized in that, the thing side surface radius-of-curvature of said first lens is R1, said first lens be R2 as the side surface radius-of-curvature, satisfy the following relationship formula:

|R1/R2|＜0.07。

25. photo-optics eyeglass group as claimed in claim 22 is characterized in that the material of said first lens is a glass, and the thing side surface of said the 4th lens is a concave surface.

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