CN102236152A - Image pickup lens group - Google Patents
Image pickup lens group Download PDFInfo
- Publication number
- CN102236152A CN102236152A CN 201010170541 CN201010170541A CN102236152A CN 102236152 A CN102236152 A CN 102236152A CN 201010170541 CN201010170541 CN 201010170541 CN 201010170541 A CN201010170541 A CN 201010170541A CN 102236152 A CN102236152 A CN 102236152A
- Authority
- CN
- China
- Prior art keywords
- lens
- system group
- lens system
- imaging lens
- thing side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Lenses (AREA)
Abstract
The invention provides an image pickup lens group. The image pickup lens group comprises a first lens with positive refractive power, a second lens with negative refractive power, and a third lens with negative refractive power from an object side to an image side in turn, and a diaphragm and an electronic photosensitive element which are used for imaging a shot object, wherein the surfaces of the object side and the image side of the first lens are convex surfaces; at least one of the surfaces of the object side and the image side of the second lens is an aspheric surface; the surface of the image side of the third lens is a concave surface; the surfaces of the object side and the image side of the third lens are aspheric surfaces; the diaphragm is arranged between the first lens and the second lens; and three lenses with refractive power are arranged in the image pickup lens group. The first lens is favorable for shortening the total length of the image pickup lens group; the second lens is favorable for correcting aberration generated by the first lens and correcting the chromatic aberration of a system simultaneously; and the third lens can make a principal point of an optical system far away from an imaging surface, and is favorable for shortening the total length of the system to keep the lens miniature.
Description
Technical field
The invention relates to a kind of imaging lens system group; Particularly about a kind of miniaturization imaging lens system group that is applied on the portable type electronic product.
Background technology
Recent years, rise along with portable type electronic product with camera function, 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 complementary matal-oxide semiconductor element (ComplementaryMetal-Oxide Semiconductor Sensor, CMOS Sensor) two kind, and along with progressing greatly of semiconductor fabrication, make the Pixel Dimensions of photo-sensitive cell dwindle, adding now, 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.
Common miniaturization phtographic lens, for reducing manufacturing cost, adopt based on the two-piece type lens arrangement more, as United States Patent (USP) the 7th, the phtographic lens of a kind of two-chip type lens arrangement that discloses for 525, No. 741, yet because of only two lens of tool are limited in one's ability to the revisal of aberration, can't satisfy the photography module demand of higher-order, will cause the camera lens total length to be difficult to reach miniaturization but dispose poly-lens.
In order to obtain good image quality and to have the characteristic of miniaturization concurrently, the imaging lens system group that possesses three lens is feasible scheme.United States Patent (USP) the 7th, 436, the phtographic lens of three lens arrangements of a kind of tool is provided for No. 603, and it to being first lens of the positive refracting power of a tool, second lens of the negative refracting power of a tool and the 3rd lens of the positive refracting power of a tool in regular turn as side, constitutes so-called Triplet (triplet) pattern by the thing side.Form although it is so can be revised most aberration that this optical system produces, but its demand for the optics total length is bigger, causes lens construction must cooperate the optics total length and increases, so that be difficult to satisfy phtographic lens more frivolous, miniaturization and use.
In view of this, be badly in need of a kind of being applicable on frivolous, the portable type electronic product, image quality is good and be unlikely to the imaging lens system group that makes the camera lens total length long.
Summary of the invention
The invention provides a kind of imaging lens system group, by the thing side to comprising in regular turn as side: first lens of the positive refracting power of a tool, its thing side surface and be all convex surface as side surface; Second lens of the negative refracting power of one tool, its thing side surface be aspheric surface as at least one surface in the side surface; And the 3rd lens of the negative refracting power of a tool, it is a concave surface as side surface, and the thing side surface of the 3rd lens and be all aspheric surface as side surface; Wherein, this imaging lens system group is provided with an aperture in addition and a sense electronics optical element supplies the object imaging, and this aperture is arranged between these first lens and this second lens, and the number of lenses of tool refracting power is three in this imaging lens system group; The focal length of whole imaging lens system group is f, the focal length of these second lens is f2, 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 these second lens is R3, this aperture is SL to the distance of this sense electronics optical element on optical axis, and the thing side surface of these first lens to the distance of this sense electronics optical element on optical axis is TTL, satisfies following relationship formula :-0.70＜f/f2＜-0.24;-0.30＜R1/R2＜0.00;-0.40＜R3/f＜-0.24; 0.75＜SL/TTL＜0.90.
On the other hand, the invention provides a kind of imaging lens system group, by the thing side to comprising in regular turn as side: first lens of the positive refracting power of a tool, its thing side surface and be all convex surface as side surface; Second lens of the negative 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 these second lens be aspheric surface as at least one surface in the side surface; And the 3rd lens of the negative refracting power of a tool, it is a concave surface as side surface, the thing side surface of the 3rd lens and be all aspheric 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; Wherein, this imaging lens system group is provided with an aperture in addition and a sense electronics optical element supplies the object imaging, and this aperture is arranged between these first lens and this second lens, and the number of lenses of tool refracting power is three in this imaging lens system group; The focal length of whole imaging lens system group is f, the focal length of these first lens is f1, the focal length of these second lens is f2, this aperture to the distance of this sense electronics optical element on optical axis is SL, the thing side surface of these first lens to the distance of this sense electronics optical element on optical axis is TTL, satisfies following relationship formula :-0.45＜f/f2＜-0.29; 1.10＜f/f1＜1.48; 0.75＜SL/TTL＜0.90.
Again on the other hand, the invention provides a kind of imaging lens system group, by the thing side to comprising in regular turn as side: first lens of the positive refracting power of a tool, its thing side surface and be all convex surface as side surface; Second lens of the negative 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 these second lens be aspheric surface as at least one surface in the side surface; And the 3rd lens of the negative refracting power of a tool, it is a concave surface as side surface, the thing side surface of the 3rd lens and be all aspheric 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; Wherein, this imaging lens system group is provided with an aperture in addition and a sense electronics optical element supplies the object imaging, and this aperture is arranged between these first lens and this second lens, and the number of lenses of tool refracting power is three in this imaging lens system group; The focal length of whole imaging lens system group is f, the focal length of these second lens is f2, 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 abbe number of these first lens is V1, and the abbe number of these second lens is V2, and this aperture to the distance of this sense electronics optical element on optical axis is SL, the thing side surface of these first lens to the distance of this sense electronics optical element on optical axis is TTL, satisfies following relationship formula :-0.70＜f/f2＜-0.24;-0.30＜R1/R2＜0.00; 31.0＜V1-V2＜45.0; 0.75＜SL/TTL＜0.90.
The present invention can effectively revise aberration, reduce the susceptibility of optical system, and can shorten the total length of this imaging lens system group simultaneously by above-mentioned mirror configuration set mode, keeps the characteristic of camera lens miniaturization.
In the imaging lens system group of the present invention, the positive refracting power of this first lens tool provides system main refracting power, helps to shorten the total length of this imaging lens system group; This second lens tool is born refracting power, and the aberration that helps first lens to the positive refracting power of tool to be produced is done revisal, and helps the aberration of update the system simultaneously; The 3rd lens tool is born refracting power, and the principal point (Principal Point) that can make optical system helps shortening the total length of system, to keep the miniaturization of camera lens away from imaging surface.
In the imaging lens system group of the present invention, these first lens can be a thing side surface and are all the biconvex lens of convex surface as side surface, with the refracting power configuration of these first lens of effective reinforcement, and then make the total length of this imaging lens system group become shorter.It is concave surface that these second lens can be a thing side surface, be the crescent lens of convex surface as side surface, with the astigmatism (Astigmatism) that helps update the system.The 3rd lens be concave surface as side surface, the principal point that can make optical system helps shortening the total length of system further from imaging surface, to keep the miniaturization of camera lens.
This aperture is arranged between these first lens and this second lens in the imaging lens system group of the present invention.Provide positive refracting power by these first lens, and when aperture placed object side near this imaging lens system group, can effectively shorten the optics total length of this imaging lens system group.In addition, above-mentioned configuration can make the outgoing pupil (Exit Pupil) of this imaging lens system group away from imaging surface, therefore, light will be incident in 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, can make the sensitization susceptibility of sense electronics optical element improve, and the minimizing system produces the possibility at dark angle.In addition, can be provided with the point of inflexion, can more effectively suppress light and be incident in angle on the photo-sensitive cell from the axle visual field in the 3rd lens, and the further aberration of modified off-axis visual field.On the other hand, when aperture being placed more near this second lens place, the characteristic that can help Wide-angle, help to receive the correction of poor (Chromatic Aberrationof Magnification), and so dispose the susceptibility that helps reduce this imaging lens system group distorting (Distortion) and multiplying power look.Therefore in the imaging lens system group of the present invention aperture being placed between these first lens and this second lens, is to help shortening the camera lens volume and reducing between the system sensitivity and obtain good balance.
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 is a table four, 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 is a table six, 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 A is table ten A, is the aspherical surface data of fifth embodiment of the invention.
Figure 22 B is table ten B, 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.
Drawing reference numeral:
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
Infrared ray filtering optical filter 140,340,540,740,940,1140
Cover glass 150,350
Imaging surface 160,360,550,750,950,1150
The focal length of whole imaging lens system group is f
The focal length of first lens is f1
The focal length of second lens is f2
The focal length of the 3rd lens is f3
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
First lens and the spacing distance of second lens on optical axis are T12
Aperture to the distance of sense electronics optical element on optical axis is SL
The thing side surface of first lens to the distance of sense electronics optical element on optical axis is TTL
Half of sense electronics optical element effective pixel area diagonal angle line length is ImgH
Embodiment
The invention provides a kind of imaging lens system group, by the thing side to comprising in regular turn as side: first lens of the positive refracting power of a tool, its thing side surface and be all convex surface as side surface; Second lens of the negative refracting power of one tool, its thing side surface be aspheric surface as at least one surface in the side surface; And the 3rd lens of the negative refracting power of a tool, it is a concave surface as side surface, and the thing side surface of the 3rd lens and be all aspheric surface as side surface; Wherein, this imaging lens system group is provided with an aperture in addition and a sense electronics optical element supplies the object imaging, and this aperture is arranged between these first lens and this second lens, and the number of lenses of tool refracting power is three in this imaging lens system group; The focal length of whole imaging lens system group is f, the focal length of these second lens is f2, 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 these second lens is R3, this aperture is SL to the distance of this sense electronics optical element on optical axis, and the thing side surface of these first lens to the distance of this sense electronics optical element on optical axis is TTL, satisfies following relationship formula :-0.70＜f/f2＜-0.24;-0.30＜R1/R2＜0.00;-0.40＜R3/f＜-0.24; 0.75＜SL/TTL＜0.90.
When aforementioned imaging lens system group satisfies following relationship formula :-0.70＜f/f2＜-0.24, the aberration that helps these first lens to the positive refracting power of tool to be produced is done revisal, and is unlikely to make the refracting power of these second lens excessive, can avoid producing too much higher order aberratons; Preferably, satisfy following relationship formula :-0.45＜f/f2＜-0.29.When aforementioned imaging lens system group satisfies following relationship formula :-0.30＜R1/R2＜0.00, can help the revisal of system's spherical aberration (Spherical Aberration); Preferably, satisfy following relationship formula :-0.15＜R1/R2＜0.00.When aforementioned imaging lens system group satisfies following relationship formula :-0.40＜R3/f＜-0.24, can effectively increase the back focal length of system, guarantee that this imaging lens system group has enough back focal length can place other member.When aforementioned imaging lens system group satisfies following relationship formula: 0.75＜SL/TTL＜0.90, help shortening the camera lens volume and reducing between the system sensitivity and obtain good balance.
In the aforementioned imaging lens system group of the present invention, preferably, the thing side surface of these second lens is concave surface and is convex surface as side surface, can help the astigmatism of update the system; Preferably, 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, help suppressing light and be incident in angle on the photo-sensitive cell, and the further aberration of modified off-axis visual field from the axle visual field; Preferably, the material of the 3rd lens is a plastic cement, and the plastic cement material lens not only help the making of non-spherical lens, more can effectively reduce production costs.
In the aforementioned imaging lens system group of the present invention, the focal length of whole imaging lens system group is f, and the focal length of these first lens is f1, preferably, satisfies following relationship formula: 1.10＜f/f1＜1.48.When f/f1 satisfies the above-mentioned relation formula, can make the refracting power of these first lens dispose comparatively balance, the effective total length of control system, keep the characteristic of miniaturization, and can avoid the excessive increase of high-order spherical aberration (High Order Spherical Aberration) simultaneously, and then promote image quality.
In the aforementioned imaging lens system group of the present invention, 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＜45.0.When V1-V2 satisfies the above-mentioned relation formula, help the correction of aberration in this imaging lens system group.
In the aforementioned imaging lens system group of the present invention, the thing side surface radius-of-curvature of these first lens is R1, and the focal length of whole imaging lens system group is f, preferably, satisfies following relationship formula: 0.30＜R1/f＜0.50.When R1/f satisfies the above-mentioned relation formula, the positive refracting power that provides these first lens enough can be provided, avoid producing too much higher order aberratons simultaneously.
In the aforementioned imaging lens system group of the present invention, the focal length of these second lens is f2, and the focal length of the 3rd lens is f3, preferably, satisfies following relationship formula: 0.08＜f2/f3＜0.40.When f2/f3 satisfies the above-mentioned relation formula, can make the refracting power of these second lens and the 3rd lens dispose comparatively balance, help the correction of aberration and the reduction of susceptibility.
In the aforementioned imaging lens system group of the present invention, the thing side surface radius-of-curvature of the 3rd lens is R5, the 3rd lens be R6 as the side surface radius-of-curvature, preferably, satisfy following relationship formula: 1.10＜R5/R6＜1.60.When R5/R6 satisfies the above-mentioned relation formula, can make the 3rd lensing as the revisal lens, help the correction of system aberration, to promote image quality.
In the aforementioned imaging lens system group of the present invention, these first lens and the spacing distance of these second lens on optical axis are T12, and the focal length of whole imaging lens system group is f, preferably, satisfies the following relationship formula: 1.35＜(T12/f) * 10＜1.85.When (T12/f) * 10 satisfies the above-mentioned relation formula, can guarantee to have between these first lens and this second lens enough spaces to place aperture, and can avoid the excessive camera lens that causes of lens spacing distance to be difficult to reach miniaturization.
In the aforementioned imaging lens system group of the present invention, the thing side surface of these first lens to the distance of this sense electronics optical element on optical axis is TTL, and half of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, preferably, satisfies following relationship formula: TTL/ImgH＜2.0.When TTL/ImgH satisfies the above-mentioned relation formula, help keeping the miniaturization of this imaging lens system group, to be equipped on the frivolous portable electronic product.
On the other hand, the invention provides a kind of imaging lens system group, by the thing side to comprising in regular turn as side: first lens of the positive refracting power of a tool, its thing side surface and be all convex surface as side surface; Second lens of the negative 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 these second lens be aspheric surface as at least one surface in the side surface; And the 3rd lens of the negative refracting power of a tool, it is a concave surface as side surface, the thing side surface of the 3rd lens and be all aspheric 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; Wherein, this imaging lens system group is provided with an aperture in addition and a sense electronics optical element supplies the object imaging, and this aperture is arranged between these first lens and this second lens, and the number of lenses of tool refracting power is three in this imaging lens system group; The focal length of whole imaging lens system group is f, the focal length of these first lens is f1, the focal length of these second lens is f2, this aperture to the distance of this sense electronics optical element on optical axis is SL, the thing side surface of these first lens to the distance of this sense electronics optical element on optical axis is TTL, satisfies following relationship formula :-0.45＜f/f2＜-0.29; 1.10＜f/f1＜1.48; 0.75＜SL/TTL＜0.90.
When aforementioned imaging lens system group satisfies following relationship formula :-0.45＜f/f2＜-0.29, the aberration that helps these first lens to the positive refracting power of tool to be produced is done revisal, and is unlikely to make the refracting power of these second lens excessive, can avoid producing too much higher order aberratons.When aforementioned imaging lens system group satisfies following relationship formula: 1.10＜f/f1＜1.48, can make the refracting power of these first lens dispose comparatively balance, the effective total length of control system is kept the characteristic of miniaturization, and can avoid the excessive increase of high-order spherical aberration simultaneously, and then promote image quality.When aforementioned imaging lens system group satisfies following relationship formula: 0.75＜SL/TTL＜0.90, help shortening the camera lens volume and reducing between the system sensitivity and obtain good balance.
In the aforementioned imaging lens system group of the present invention, 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 following relationship formula :-0.30＜R1/R2＜0.00.When R1/R2 satisfies the above-mentioned relation formula, can help the revisal of system's spherical aberration; Further, preferablely satisfy following relationship formula :-0.15＜R1/R2＜0.00.
In the aforementioned imaging lens system group of the present invention, 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＜45.0.When V1-V2 satisfies the above-mentioned relation formula, help the correction of aberration in this imaging lens system group; Further, preferably, satisfy following relationship formula: 33.5＜V1-V2＜45.0.
In the aforementioned imaging lens system group of the present invention, these first lens and the spacing distance of these second lens on optical axis are T12, and the focal length of whole imaging lens system group is f, preferably, satisfies the following relationship formula: 1.35＜(T12/f) * 10＜1.85.When (T12/f) * 10 satisfies the above-mentioned relation formula, can guarantee to have between these first lens and this second lens enough spaces to place aperture, and can avoid the excessive camera lens that causes of lens spacing distance to be difficult to reach miniaturization.
In the aforementioned imaging lens system group of the present invention, the thing side surface radius-of-curvature of these first lens is R1, and the focal length of whole imaging lens system group is f, preferably, satisfies following relationship formula: 0.30＜R1/f＜0.50.When R1/f satisfies the above-mentioned relation formula, the positive refracting power that provides these first lens enough can be provided, avoid producing too much higher order aberratons simultaneously.
In the aforementioned imaging lens system group of the present invention, the focal length of these second lens is f2, and the focal length of the 3rd lens is f3, preferably, satisfies following relationship formula: 0.08＜f2/f3＜0.40.When f2/f3 satisfies the above-mentioned relation formula, can make the refracting power of these second lens and the 3rd lens dispose comparatively balance, help the correction of aberration and the reduction of susceptibility.
Again on the other hand, the invention provides a kind of imaging lens system group, by the thing side to comprising in regular turn as side: first lens of the positive refracting power of a tool, its thing side surface and be all convex surface as side surface; Second lens of the negative 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 these second lens be aspheric surface as at least one surface in the side surface; And the 3rd lens of the negative refracting power of a tool, it is a concave surface as side surface, the thing side surface of the 3rd lens and be all aspheric 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; Wherein, this imaging lens system group is provided with an aperture in addition and a sense electronics optical element supplies the object imaging, and this aperture is arranged between these first lens and this second lens, and the number of lenses of tool refracting power is three in this imaging lens system group; The focal length of whole imaging lens system group is f, the focal length of these second lens is f2, 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 abbe number of these first lens is V1, and the abbe number of these second lens is V2, and this aperture to the distance of this sense electronics optical element on optical axis is SL, the thing side surface of these first lens to the distance of this sense electronics optical element on optical axis is TTL, satisfies following relationship formula :-0.70＜f/f2＜-0.24;-0.30＜R1/R2＜0.00; 31.0＜V1-V2＜45.0; 0.75＜SL/TTL＜0.90.
When aforementioned imaging lens system group satisfies following relationship formula :-0.70＜f/f2＜-0.24, the aberration that helps these first lens to the positive refracting power of tool to be produced is done revisal, and is unlikely to make the refracting power of these second lens excessive, can avoid producing too much higher order aberratons; Preferably, satisfy following relationship formula :-0.45＜f/f2＜-0.29.When aforementioned imaging lens system group satisfies following relationship formula :-0.30＜R1/R2＜0.00, can help the revisal of system's spherical aberration.When aforementioned imaging lens system group satisfies following relationship formula: 31.0＜V1-V2＜45.0, help the correction of aberration in this imaging lens system group, preferably, satisfy following relationship formula: 33.5＜V1-V2＜45.0.When aforementioned imaging lens system group satisfies following relationship formula: 0.75＜SL/TTL＜0.90, help shortening the camera lens volume and reducing between the system sensitivity and obtain good balance.
In the aforementioned imaging lens system group of the present invention, preferably, these first lens, second lens and the 3rd lens are all plastic cement material, and the plastic cement material lens not only help the making of non-spherical lens, more can effectively reduce production costs.
In the aforementioned imaging lens system group of the present invention, these first lens and the spacing distance of these second lens on optical axis are T12, and the focal length of whole imaging lens system group is f, preferably, satisfies the following relationship formula: 1.35＜(T12/f) * 10＜1.85.When (T12/f) * 10 satisfies the above-mentioned relation formula, can guarantee to have between these first lens and this second lens enough spaces to place aperture, and can avoid the excessive camera lens that causes of lens spacing distance to be difficult to reach miniaturization.
In the imaging lens system 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 imaging lens system group of the present invention.
In the imaging lens system group of the present invention,, represent that then this lens surface is a convex surface in 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 in paraxial place.
Imaging lens system group of the present invention will cooperate appended graphic detailed description the in detail 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 imaging lens system group of first embodiment mainly is made of three pieces of lens, is extremely comprised in regular turn as side by the thing side:
The 3rd lens 130 of the negative refracting power of one tool, its thing side surface 131 is that convex surface and picture side surface 132 are concave surface, its material is a plastic cement, the thing side surface 131 of the 3rd lens 130 and be all aspheric surface, and the thing side surface 131 of the 3rd lens 130 and as all being provided with at least one point of inflexion on the side surface 132 as side surface 132;
Wherein, this imaging lens system group is provided with an aperture 100 in addition and places between these first lens 110 and this second lens 120;
Other includes an infrared ray filtering optical filter (IR-filter) 140 and a cover glass (Cover-glass) 150 places between the picture side surface 132 and an imaging surface 160 of the 3rd lens 130; The material of this infrared ray filtering optical filter 140 and this cover glass 150 is all glass and it does not influence the focal length of this imaging lens system group of the present invention.
The equation of above-mentioned aspheric curve is expressed as follows:
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 imaging lens system group, the focal length of whole imaging lens system group is f, and its relational expression is: f=2.94 (millimeter).
In the first embodiment imaging lens system group, the f-number of whole imaging lens system group (f-number) is Fno, and its relational expression is: Fno=2.85.
In the first embodiment imaging lens system group, half of maximum visual angle is HFOV in the whole imaging lens system group, and its relational expression is: HFOV=30.9 (degree).
In the first embodiment imaging lens system 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=32.5.
In the first embodiment imaging lens system group, the thing side surface radius-of-curvature of these first lens 110 is R1, these first lens 110 be R2 as the side surface radius-of-curvature, its relational expression is: R1/R2=-0.01.
In the first embodiment imaging lens system 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=1.21.
In the first embodiment imaging lens system group, the thing side surface radius-of-curvature of these first lens 110 is R1, and the focal length of whole imaging lens system group is f, and its relational expression is: R1/f=0.41.
In the first embodiment imaging lens system group, the thing side surface radius-of-curvature of these second lens 120 is R3, and the focal length of whole imaging lens system group is f, and its relational expression is: R3/f=-0.28.
In the first embodiment imaging lens system group, the focal length of whole imaging lens system group is f, and the focal length of these first lens 110 is f1, and its relational expression is: f/f1=1.35.
In the first embodiment imaging lens system group, the focal length of whole imaging lens system group is f, and the focal length of these second lens 120 is f2, and its relational expression is: f/f2=-0.38.
In the first embodiment imaging lens system group, the focal length of these second lens 120 is f2, and the focal length of the 3rd lens 130 is f3, and its relational expression is: f2/f3=0.19.
In the first embodiment imaging lens system 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 imaging lens system group is f, and its relational expression is: (T12/f) * 10=1.59.
In the first embodiment imaging lens system group, this imaging lens system group is provided with a sense electronics optical element in these imaging surface 160 places for the object imaging thereon in addition, this aperture 100 to the distance of this sense electronics optical element on optical axis is SL, the thing side surface 111 of these first lens 110 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.84.
In the first embodiment imaging lens system group, the thing side surface 111 of these first lens 110 to the distance of this sense electronics optical element on optical axis is TTL, and half of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, and its relational expression is: TTL/ImgH=1.94.
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 half 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 imaging lens system group of second embodiment mainly is made of three 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 and 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 convex 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; And
The 3rd lens 330 of the negative refracting power of one tool, its thing side surface 331 is that convex surface and picture side surface 332 are concave surface, its material is a plastic cement, the thing side surface 331 of the 3rd lens 330 and be all aspheric surface, and the thing side surface 331 of the 3rd lens 330 and as all being provided with at least one point of inflexion on the side surface 332 as side surface 332;
Wherein, this imaging lens system group is provided with an aperture 300 in addition and places between these first lens 310 and this second lens 320;
Other includes an infrared ray filtering optical filter 340 and a cover glass 350 places between the picture side surface 332 and an imaging surface 360 of the 3rd lens 330; The material of this infrared ray filtering optical filter 340 and this cover glass 350 is all glass and it does not influence the focal length of this imaging lens system 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 imaging lens system group, the focal length of whole imaging lens system group is f, and its relational expression is: f=2.90 (millimeter).
In the second embodiment imaging lens system group, the f-number of whole imaging lens system group is Fno, and its relational expression is: Fno=2.80.
In the second embodiment imaging lens system group, half of maximum visual angle is HFOV in the whole imaging lens system group, and its relational expression is: HFOV=31.3 (degree).
In the second embodiment imaging lens system 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=34.5.
In the second embodiment imaging lens system group, the thing side surface radius-of-curvature of these first lens 310 is R1, these first lens 310 be R2 as the side surface radius-of-curvature, its relational expression is: R1/R2=-0.05.
In the second embodiment imaging lens system 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=1.30.
In the second embodiment imaging lens system group, the thing side surface radius-of-curvature of these first lens 310 is R1, and the focal length of whole imaging lens system group is f, and its relational expression is: R1/f=0.40.
In the second embodiment imaging lens system group, the thing side surface radius-of-curvature of these second lens 320 is R3, and the focal length of whole imaging lens system group is f, and its relational expression is: R3/f=-0.30.
In the second embodiment imaging lens system group, the focal length of whole imaging lens system group is f, and the focal length of these first lens 310 is f1, and its relational expression is: f/f1=1.41.
In the second embodiment imaging lens system group, the focal length of whole imaging lens system group is f, and the focal length of these second lens 320 is f2, and its relational expression is: f/f2=-0.52.
In the second embodiment imaging lens system group, the focal length of these second lens 320 is f2, and the focal length of the 3rd lens 330 is f3, and its relational expression is: f2/f3=0.25.
In the second embodiment imaging lens system 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 imaging lens system group is f, and its relational expression is: (T12/f) * 10=1.61.
In the second embodiment imaging lens system group, this imaging lens system group is provided with a sense electronics optical element in these imaging surface 360 places for the object imaging thereon in addition, this aperture 300 to the distance of this sense electronics optical element on optical axis is SL, the thing side surface 311 of these first lens 310 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.85.
In the second embodiment imaging lens system group, the thing side surface 311 of these first lens 310 to the distance of this sense electronics optical element on optical axis is TTL, and half of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, and its relational expression is: TTL/ImgH=1.84.
The detailed optical data of second embodiment is shown in Figure 15 table three, and its aspherical surface data is shown in Figure 16 table four, and wherein the unit of radius-of-curvature, thickness and focal length is mm, and HFOV is defined as half of maximum visual angle.
" the 3rd embodiment "
Third embodiment of the invention sees also Fig. 5, and the aberration curve of the 3rd embodiment sees also Fig. 6.The imaging lens system group of the 3rd embodiment mainly is made of three pieces of lens, is extremely comprised in regular turn as side by the thing side:
The 3rd lens 530 of the negative refracting power of one tool, its thing side surface 531 is that convex surface and picture side surface 532 are concave surface, its material is a plastic cement, the thing side surface 531 of the 3rd lens 530 and be all aspheric surface, and the thing side surface 531 of the 3rd lens 530 and as all being provided with at least one point of inflexion on the side surface 532 as side surface 532;
Wherein, this imaging lens system group is provided with an aperture 500 in addition and places between these first lens 510 and this second lens 520;
Other includes an infrared ray filtering optical filter 540 and places looking like between a side surface 532 and the imaging surface 550 of the 3rd lens 530; The material of this infrared ray filtering optical filter 540 is that glass and its do not influence the focal length of this imaging lens system 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 imaging lens system group, the focal length of whole imaging lens system group is f, and its relational expression is: f=2.70 (millimeter).
In the 3rd embodiment imaging lens system group, the f-number of whole imaging lens system group is Fno, and its relational expression is: Fno=2.80.
In the 3rd embodiment imaging lens system group, half of maximum visual angle is HFOV in the whole imaging lens system group, and its relational expression is: HFOV=32.9 (degree).
In the 3rd embodiment imaging lens system 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=34.5.
In the 3rd embodiment imaging lens system group, the thing side surface radius-of-curvature of these first lens 510 is R1, these first lens 510 be R2 as the side surface radius-of-curvature, its relational expression is: R1/R2=-0.13.
In the 3rd embodiment imaging lens system 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=1.41.
In the 3rd embodiment imaging lens system group, the thing side surface radius-of-curvature of these first lens 510 is R1, and the focal length of whole imaging lens system group is f, and its relational expression is: R1/f=0.45.
In the 3rd embodiment imaging lens system group, the thing side surface radius-of-curvature of these second lens 520 is R3, and the focal length of whole imaging lens system group is f, and its relational expression is: R3/f=-0.25.
In the 3rd embodiment imaging lens system group, the focal length of whole imaging lens system group is f, and the focal length of these first lens 510 is f1, and its relational expression is: f/f1=1.34.
In the 3rd embodiment imaging lens system group, the focal length of whole imaging lens system group is f, and the focal length of these second lens 520 is f2, and its relational expression is: f/f2=-0.26.
In the 3rd embodiment imaging lens system group, the focal length of these second lens 520 is f2, and the focal length of the 3rd lens 530 is f3, and its relational expression is: f2/f3=0.99.
In the 3rd embodiment imaging lens system 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 imaging lens system group is f, and its relational expression is: (T12/f) * 10=1.70.
In the 3rd embodiment imaging lens system group, this imaging lens system group is provided with a sense electronics optical element in these imaging surface 550 places for the object imaging thereon in addition, this aperture 500 to the distance of this sense electronics optical element on optical axis is SL, the thing side surface 511 of these first lens 510 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.86.
In the 3rd embodiment imaging lens system group, the thing side surface 511 of these first lens 510 to the distance of this sense electronics optical element on optical axis is TTL, and half of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, and its relational expression is: TTL/ImgH=1.73.
The detailed optical data of the 3rd embodiment is shown in Figure 17 table five, and its aspherical surface data is shown in Figure 18 table six, and wherein the unit of radius-of-curvature, thickness and focal length is mm, and HFOV is defined as half of maximum visual angle.
" the 4th embodiment "
Fourth embodiment of the invention sees also Fig. 7, and the aberration curve of the 4th embodiment sees also Fig. 8.The imaging lens system group of the 4th embodiment mainly is made of three 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 and be 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 and be all aspheric surface as side surface 722; And
The 3rd lens 730 of the negative refracting power of one tool, its thing side surface 731 is that convex surface and picture side surface 732 are concave surface, its material is a plastic cement, the thing side surface 731 of the 3rd lens 730 and be all aspheric surface, and the thing side surface 731 of the 3rd lens 730 and as all being provided with at least one point of inflexion on the side surface 732 as side surface 732;
Wherein, this imaging lens system group is provided with an aperture 700 in addition and places between these first lens 710 and this second lens 720;
Other includes an infrared ray filtering optical filter 740 and places looking like between a side surface 732 and the imaging surface 750 of the 3rd lens 730; The material of this infrared ray filtering optical filter 740 is that glass and its do not influence the focal length of this imaging lens system 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 imaging lens system group, the focal length of whole imaging lens system group is f, and its relational expression is: f=2.90 (millimeter).
In the 4th embodiment imaging lens system group, the f-number of whole imaging lens system group is Fno, and its relational expression is: Fno=2.07.
In the 4th embodiment imaging lens system group, half of maximum visual angle is HFOV in the whole imaging lens system group, and its relational expression is: HFOV=31.0 (degree).
In the 4th embodiment imaging lens system 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=34.5.
In the 4th embodiment imaging lens system group, the thing side surface radius-of-curvature of these first lens 710 is R1, these first lens 710 be R2 as the side surface radius-of-curvature, its relational expression is: R1/R2=-0.07.
In the 4th embodiment imaging lens system group, the thing side surface radius-of-curvature of the 3rd lens 730 is R5, the 3rd lens 730 be R6 as the side surface radius-of-curvature, its relational expression is: R5/R6=1.31.
In the 4th embodiment imaging lens system group, the thing side surface radius-of-curvature of these first lens 710 is R1, and the focal length of whole imaging lens system group is f, and its relational expression is: R1/f=0.44.
In the 4th embodiment imaging lens system group, the thing side surface radius-of-curvature of these second lens 720 is R3, and the focal length of whole imaging lens system group is f, and its relational expression is: R3/f=-0.28.
In the 4th embodiment imaging lens system group, the focal length of whole imaging lens system group is f, and the focal length of these first lens 710 is f1, and its relational expression is: f/f1=1.32.
In the 4th embodiment imaging lens system group, the focal length of whole imaging lens system group is f, and the focal length of these second lens 720 is f2, and its relational expression is: f/f2=-0.36.
In the 4th embodiment imaging lens system group, the focal length of these second lens 720 is f2, and the focal length of the 3rd lens 730 is f3, and its relational expression is: f2/f3=0.31.
In the 4th embodiment imaging lens system group, these first lens 710 are T12 with the spacing distance of these second lens 720 on optical axis, and the focal length of whole imaging lens system group is f, and its relational expression is: (T12/f) * 10=1.46.
In the 4th embodiment imaging lens system group, this imaging lens system group is provided with a sense electronics optical element in these imaging surface 750 places for the object imaging thereon in addition, this aperture 700 to the distance of this sense electronics optical element on optical axis is SL, the thing side surface 711 of these first lens 710 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.85.
In the 4th embodiment imaging lens system group, the thing side surface 711 of these first lens 710 to the distance of this sense electronics optical element on optical axis is TTL, and half of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, and its relational expression is: TTL/ImgH=1.92.
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 half 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 imaging lens system group of the 5th embodiment mainly is made of three pieces of lens, is extremely comprised in regular turn as side by the thing side:
The 3rd lens 930 of the negative refracting power of one tool, its thing side surface 931 is that convex surface and picture side surface 932 are concave surface, its material is a plastic cement, the thing side surface 931 of the 3rd lens 930 and be all aspheric surface, and the thing side surface 931 of the 3rd lens 930 and as all being provided with at least one point of inflexion on the side surface 932 as side surface 932;
Wherein, this imaging lens system group is provided with an aperture 900 in addition and places between these first lens 910 and this second lens 920;
Other includes an infrared ray filtering optical filter 940 and places looking like between a side surface 932 and the imaging surface 950 of the 3rd lens 930; The material of this infrared ray filtering optical filter 940 is that glass and its do not influence the focal length of this imaging lens system 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 imaging lens system group, the focal length of whole imaging lens system group is f, and its relational expression is: f=2.74 (millimeter).
In the 5th embodiment imaging lens system group, the f-number of whole imaging lens system group is Fno, and its relational expression is: Fno=2.60.
In the 5th embodiment imaging lens system group, half of maximum visual angle is HFOV in the whole imaging lens system group, and its relational expression is: HFOV=32.5 (degree).
In the 5th embodiment imaging lens system 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=34.5.
In the 5th embodiment imaging lens system group, the thing side surface radius-of-curvature of these first lens 910 is R1, these first lens 910 be R2 as the side surface radius-of-curvature, its relational expression is: R1/R2=0.22.
In the 5th embodiment imaging lens system group, the thing side surface radius-of-curvature of the 3rd lens 930 is R5, the 3rd lens 930 be R6 as the side surface radius-of-curvature, its relational expression is: R5/R6=1.20.
In the 5th embodiment imaging lens system group, the thing side surface radius-of-curvature of these first lens 910 is R1, and the focal length of whole imaging lens system group is f, and its relational expression is: R1/f=0.35.
In the 5th embodiment imaging lens system group, the thing side surface radius-of-curvature of these second lens 920 is R3, and the focal length of whole imaging lens system group is f, and its relational expression is: R3/f=-0.30.
In the 5th embodiment imaging lens system group, the focal length of whole imaging lens system group is f, and the focal length of these first lens 910 is f1, and its relational expression is: f/f1=1.26.
In the 5th embodiment imaging lens system group, the focal length of whole imaging lens system group is f, and the focal length of these second lens 920 is f2, and its relational expression is: f/f2=-0.35.
In the 5th embodiment imaging lens system group, the focal length of these second lens 920 is f2, and the focal length of the 3rd lens 930 is f3, and its relational expression is: f2/f3=0.14.
In the 5th embodiment imaging lens system group, these first lens 910 are T12 with the spacing distance of these second lens 920 on optical axis, and the focal length of whole imaging lens system group is f, and its relational expression is: (T12/f) * 10=1.61.
In the 5th embodiment imaging lens system group, this imaging lens system group is provided with a sense electronics optical element in these imaging surface 950 places for the object imaging thereon in addition, this aperture 900 to the distance of this sense electronics optical element on optical axis is SL, the thing side surface 911 of these first lens 910 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.83.
In the 5th embodiment imaging lens system group, the thing side surface 911 of these first lens 910 to the distance of this sense electronics optical element on optical axis is TTL, and half of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, and its relational expression is: TTL/ImgH=1.75.
The detailed optical data of the 5th embodiment is shown in Figure 21 table nine, and its aspherical surface data is shown in table ten A and table ten B of Figure 22 A and Figure 22 B, and wherein the unit of radius-of-curvature, thickness and focal length is mm, and HFOV is defined as half of maximum visual angle.
" the 6th embodiment "
Sixth embodiment of the invention sees also Figure 11, and the aberration curve of the 6th embodiment sees also Figure 12.The imaging lens system group of the 6th embodiment mainly is made of three pieces of lens, is extremely comprised in regular turn as side by the thing side:
The 3rd lens 1130 of the negative refracting power of one tool, its thing side surface 1131 is that convex surface and picture side surface 1132 are concave surface, its material is a plastic cement, the thing side surface 1131 of the 3rd lens 1130 and be all aspheric surface, and the thing side surface 1131 of the 3rd lens 1130 and as all being provided with at least one point of inflexion on the side surface 1132 as side surface 1132;
Wherein, this imaging lens system group is provided with an aperture 1100 in addition and places between these first lens 1110 and this second lens 1120;
Other includes an infrared ray filtering optical filter 1140 and places looking like between a side surface 1132 and the imaging surface 1150 of the 3rd lens 1130; The material of this infrared ray filtering optical filter 1140 is that glass and its do not influence the focal length of this imaging lens system 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 imaging lens system group, the focal length of whole imaging lens system group is f, and its relational expression is: f=1.90 (millimeter).
In the 6th embodiment imaging lens system group, the f-number of whole imaging lens system group is Fno, and its relational expression is: Fno=2.40.
In the 6th embodiment imaging lens system group, half of maximum visual angle is HFOV in the whole imaging lens system group, and its relational expression is: HFOV=32.5 (degree).
In the 6th embodiment imaging lens system 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 imaging lens system group, the thing side surface radius-of-curvature of these first lens 1110 is R1, these first lens 1110 be R2 as the side surface radius-of-curvature, its relational expression is: R1/R2=0.03.
In the 6th embodiment imaging lens system group, the thing side surface radius-of-curvature of the 3rd lens 1130 is R5, the 3rd lens 1130 be R6 as the side surface radius-of-curvature, its relational expression is: R5/R6=1.19.
In the 6th embodiment imaging lens system group, the thing side surface radius-of-curvature of these first lens 1110 is R1, and the focal length of whole imaging lens system group is f, and its relational expression is: R1/f=0.41.
In the 6th embodiment imaging lens system group, the thing side surface radius-of-curvature of these second lens 1120 is R3, and the focal length of whole imaging lens system group is f, and its relational expression is: R3/f=-0.28.
In the 6th embodiment imaging lens system group, the focal length of whole imaging lens system group is f, and the focal length of these first lens 1110 is f1, and its relational expression is: f/f1=1.30.
In the 6th embodiment imaging lens system group, the focal length of whole imaging lens system group is f, and the focal length of these second lens 1120 is f2, and its relational expression is: f/f2=-0.28.
In the 6th embodiment imaging lens system group, the focal length of these second lens 1120 is f2, and the focal length of the 3rd lens 1130 is f3, and its relational expression is: f2/f3=0.18.
In the 6th embodiment imaging lens system group, these first lens 1110 are T12 with the spacing distance of these second lens 1120 on optical axis, and the focal length of whole imaging lens system group is f, and its relational expression is: (T12/f) * 10=1.37.
In the 6th embodiment imaging lens system group, this imaging lens system group is provided with a sense electronics optical element in these imaging surface 1150 places for the object imaging thereon in addition, this aperture 1100 to the distance of this sense electronics optical element on optical axis is SL, the thing side surface 1111 of these first lens 1110 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.80.
In the 6th embodiment imaging lens system group, the thing side surface 1111 of these first lens 1110 to the distance of this sense electronics optical element on optical axis is TTL, and half of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, and its relational expression is: TTL/ImgH=1.90.
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 half of maximum visual angle.
Table one is depicted as the different numerical value change tables of imaging lens system group embodiment of the present invention to table ten two (corresponding Figure 23 to Figure 24 respectively); the all true gained of testing of numerical value change of right each embodiment of the present invention; even use different numerical value; the product of same structure must belong to protection category of the present invention; so above explanation is described and graphic 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.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (23)
1. an imaging lens system group is characterized in that, is extremely comprised in regular turn as side by the thing side:
First lens of the positive refracting power of one tool, its thing side surface and be all convex surface as side surface;
Second lens of the negative refracting power of one tool, its thing side surface be aspheric surface as at least one surface in the side surface; And
The 3rd lens of the negative refracting power of one tool, it is a concave surface as side surface, and the thing side surface of described the 3rd lens and be all aspheric surface as side surface;
Wherein, described imaging lens system group is provided with an aperture in addition and a sense electronics optical element supplies the object imaging, and described aperture is arranged between described first lens and described second lens, and the number of lenses of tool refracting power is three in the described imaging lens system group; The focal length of whole imaging lens system group is f, the focal length of described second lens is f2, the thing side surface radius-of-curvature of described first lens is R1, described first lens be R2 as the side surface radius-of-curvature, the thing side surface radius-of-curvature of described second lens is R3, described aperture to the distance of described sense electronics optical element on optical axis is SL, and the thing side surface of described first lens to the distance of described sense electronics optical element on optical axis is TTL, satisfies the following relationship formula:
-0.70＜f/f2＜-0.24；
-0.30＜R1/R2＜0.00；
-0.40＜R3/f＜-0.24；
0.75＜SL/TTL＜0.90。
2. imaging lens system group as claimed in claim 1, it is characterized in that, the thing side surface of described second lens is concave surface and is convex surface as side surface that the material of described the 3rd lens is a plastic cement, and the thing side surface of described the 3rd lens be provided with at least one point of inflexion as at least one surface in the side surface.
3. imaging lens system group as claimed in claim 2 is characterized in that, the focal length of whole imaging lens system group is f, and the focal length of described first lens is f1, satisfies the following relationship formula:
1.10＜f/f1＜1.48。
4. imaging lens system group as claimed in claim 3 is characterized in that, the abbe number of described first lens is V1, and the abbe number of described second lens is V2, satisfies the following relationship formula:
31.0＜V1-V2＜45.0。
5. imaging lens system group as claimed in claim 2 is characterized in that, the thing side surface radius-of-curvature of described first lens is R1, described first lens be R2 as the side surface radius-of-curvature, satisfy the following relationship formula:
-0.15＜R1/R2＜0.00。
6. imaging lens system group as claimed in claim 1 is characterized in that, the focal length of whole imaging lens system group is f, and the focal length of described second lens is f2, satisfies the following relationship formula:
-0.45＜f/f2＜-0.29。
7. imaging lens system group as claimed in claim 3 is characterized in that, the thing side surface radius-of-curvature of described first lens is R1, and the focal length of whole imaging lens system group is f, satisfies the following relationship formula:
0.30＜R1/f＜0.50。
8. imaging lens system group as claimed in claim 3 is characterized in that, the focal length of described second lens is f2, and the focal length of described the 3rd lens is f3, satisfies the following relationship formula:
0.08＜f2/f3＜0.40。
9. imaging lens system group as claimed in claim 2 is characterized in that, the thing side surface radius-of-curvature of described the 3rd lens is R5, described the 3rd lens be R6 as the side surface radius-of-curvature, satisfy the following relationship formula:
1.10＜R5/R6＜1.60。
10. imaging lens system group as claimed in claim 2 is characterized in that, described first lens and the spacing distance of described second lens on optical axis are T12, and the focal length of whole imaging lens system group is f, satisfies the following relationship formula:
1.35＜(T12/f)*10＜1.85。
11. imaging lens system group as claimed in claim 2, it is characterized in that, the thing side surface of described first lens to the distance of described sense electronics optical element on optical axis is TTL, and half of described sense electronics optical element effective pixel area diagonal angle line length is ImgH, satisfies the following relationship formula:
TTL/ImgH＜2.0。
12. an imaging lens system group is characterized in that, is extremely comprised in regular turn as side by the thing side:
First lens of the positive refracting power of one tool, its thing side surface and be all convex surface as side surface;
Second lens of the negative 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 described second lens be aspheric surface as at least one surface in the side surface; And
The 3rd lens of the negative refracting power of one tool, it is a concave surface as side surface, the thing side surface of described the 3rd lens and be all aspheric surface as side surface, and the thing side surface of described the 3rd lens be provided with at least one point of inflexion as at least one surface in the side surface;
Wherein, described imaging lens system group is provided with an aperture in addition and a sense electronics optical element supplies the object imaging, and described aperture is arranged between described first lens and described second lens, and the number of lenses of tool refracting power is three in the described imaging lens system group; The focal length of whole imaging lens system group is f, the focal length of described first lens is f1, the focal length of described second lens is f2, described aperture to the distance of described sense electronics optical element on optical axis is SL, the thing side surface of described first lens to the distance of described sense electronics optical element on optical axis is TTL, satisfies the following relationship formula:
-0.45＜f/f2＜-0.29；
1.10＜f/f1＜1.48；
0.75＜SL/TTL＜0.90。
13. imaging lens system group as claimed in claim 12 is characterized in that, the thing side surface radius-of-curvature of described first lens is R1, described first lens be R2 as the side surface radius-of-curvature, satisfy the following relationship formula:
-0.30＜R1/R2＜0.00。
14. imaging lens system group as claimed in claim 13 is characterized in that, the thing side surface radius-of-curvature of described first lens is R1, described first lens be R2 as the side surface radius-of-curvature, satisfy the following relationship formula:
-0.15＜R1/R2＜0.00。
15. imaging lens system group as claimed in claim 12 is characterized in that, the abbe number of described first lens is V1, and the abbe number of described second lens is V2, satisfies the following relationship formula:
31.0＜V1-V2＜45.0。
16. imaging lens system group as claimed in claim 15 is characterized in that, the abbe number of described first lens is V1, and the abbe number of described second lens is V2, satisfies the following relationship formula:
33.5＜V1-V2＜45.0。
17. imaging lens system group as claimed in claim 15 is characterized in that, described first lens and the spacing distance of described second lens on optical axis are T12, and the focal length of whole imaging lens system group is f, satisfies the following relationship formula:
1.35＜(T12/f)*10＜1.85。
18. imaging lens system group as claimed in claim 17 is characterized in that, the thing side surface radius-of-curvature of described first lens is R1, and the focal length of whole imaging lens system group is f, satisfies the following relationship formula:
0.30＜R1/f＜0.50。
19. imaging lens system group as claimed in claim 14 is characterized in that, the focal length of described second lens is f2, and the focal length of described the 3rd lens is f3, satisfies the following relationship formula:
0.08＜f2/f3＜0.40。
20. an imaging lens system group is characterized in that, is extremely comprised in regular turn as side by the thing side:
First lens of the positive refracting power of one tool, its thing side surface and be all convex surface as side surface;
Second lens of the negative 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 described second lens be aspheric surface as at least one surface in the side surface; And
The 3rd lens of the negative refracting power of one tool, it is a concave surface as side surface, the thing side surface of described the 3rd lens and be all aspheric surface as side surface, and the thing side surface of described the 3rd lens be provided with at least one point of inflexion as at least one surface in the side surface;
Wherein, described imaging lens system group is provided with an aperture in addition and a sense electronics optical element supplies the object imaging, and described aperture is arranged between described first lens and described second lens, and the number of lenses of tool refracting power is three in the described imaging lens system group; The focal length of whole imaging lens system group is f, the focal length of described second lens is f2, the thing side surface radius-of-curvature of described first lens is R1, described first lens be R2 as the side surface radius-of-curvature, the abbe number of described first lens is V1, and the abbe number of described second lens is V2, and described aperture to the distance of described sense electronics optical element on optical axis is SL, the thing side surface of described first lens to the distance of described sense electronics optical element on optical axis is TTL, satisfies the following relationship formula:
-0.70＜f/f2＜-0.24；
-0.30＜R1/R2＜0.00；
31.0＜V1-V2＜45.0；
0.75＜SL/TTL＜0.90。
21. imaging lens system group as claimed in claim 20 is characterized in that, the focal length of whole imaging lens system group is f, and the focal length of described second lens is f2, satisfies the following relationship formula:
-0.45＜f/f2＜-0.29。
22. imaging lens system group as claimed in claim 20, it is characterized in that, described first lens, second lens and described the 3rd lens are all plastic cement material, described first lens and the spacing distance of described second lens on optical axis are T12, the focal length of whole imaging lens system group is f, satisfies the following relationship formula:
1.35＜(T12/f)*10＜1.85。
23. imaging lens system group as claimed in claim 22 is characterized in that, the abbe number of described first lens is V1, and the abbe number of described second lens is V2, satisfies the following relationship formula:
33.5＜V1-V2＜45.0。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010170541 CN102236152B (en) | 2010-04-29 | 2010-04-29 | Image pickup lens group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010170541 CN102236152B (en) | 2010-04-29 | 2010-04-29 | Image pickup lens group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102236152A true CN102236152A (en) | 2011-11-09 |
| CN102236152B CN102236152B (en) | 2013-01-23 |
Family
ID=44886971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010170541 Active CN102236152B (en) | 2010-04-29 | 2010-04-29 | Image pickup lens group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102236152B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023212878A1 (en) * | 2022-05-05 | 2023-11-09 | 北京小米移动软件有限公司 | Optical device and photographing device comprising same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7180687B2 (en) * | 2004-03-30 | 2007-02-20 | Fujinon Corp. | Single focus wide-angle lens |
| JP2008197264A (en) * | 2007-02-09 | 2008-08-28 | Fujinon Corp | Imaging lens |
| CN101354474A (en) * | 2007-07-23 | 2009-01-28 | 一品光学工业股份有限公司 | Three-glasses lens type shooting lens |
| CN101359086A (en) * | 2007-07-30 | 2009-02-04 | 三洋电机株式会社 | Imaging lens unit, imaging device, and portable terminal |
| CN101382641A (en) * | 2007-09-04 | 2009-03-11 | 大立光电股份有限公司 | Thin type image fetching lens assembly |
-
2010
- 2010-04-29 CN CN 201010170541 patent/CN102236152B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7180687B2 (en) * | 2004-03-30 | 2007-02-20 | Fujinon Corp. | Single focus wide-angle lens |
| JP2008197264A (en) * | 2007-02-09 | 2008-08-28 | Fujinon Corp | Imaging lens |
| CN101354474A (en) * | 2007-07-23 | 2009-01-28 | 一品光学工业股份有限公司 | Three-glasses lens type shooting lens |
| CN101359086A (en) * | 2007-07-30 | 2009-02-04 | 三洋电机株式会社 | Imaging lens unit, imaging device, and portable terminal |
| CN101382641A (en) * | 2007-09-04 | 2009-03-11 | 大立光电股份有限公司 | Thin type image fetching lens assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023212878A1 (en) * | 2022-05-05 | 2023-11-09 | 北京小米移动软件有限公司 | Optical device and photographing device comprising same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102236152B (en) | 2013-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202443162U (en) | Photographing lens assembly | |
| CN101995641B (en) | Photographic lens system | |
| CN201955534U (en) | Optical imaging lens group | |
| CN201909881U (en) | Optical system for photography | |
| CN102213816B (en) | Optical photographic lens | |
| CN102236153B (en) | Optical shot for image capture | |
| CN102313970B (en) | Imaging optics lens group | |
| CN202583577U (en) | Image capturing lens assembly | |
| CN102269861B (en) | Optical lens group for shooting | |
| CN102236150B (en) | Image taking optical lens system | |
| CN102401982A (en) | Optical image capturing lens | |
| CN102466854A (en) | Optical lens system | |
| CN102253470A (en) | Photographing optical lens | |
| CN102466864B (en) | Optical photographic system | |
| CN102375213A (en) | Photographic optical lens group | |
| CN102213819B (en) | Image capture lens system | |
| CN102221739A (en) | Shooting optical system | |
| CN102269860B (en) | Optical lens for shooting | |
| CN102122056A (en) | Imaging optical lens | |
| CN102466851B (en) | Optical imaging lens | |
| CN102298199B (en) | Optical lens for photographing | |
| CN102193168B (en) | Photographic lens system | |
| CN102213817B (en) | Thinned imaging lens | |
| CN102122057B (en) | Camera optical lens group | |
| CN102221738B (en) | Thin-type image capture lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |