CN102122057B - Camera optical lens group - Google Patents

Camera optical lens group Download PDF

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Publication number
CN102122057B
CN102122057B CN2010100002780A CN201010000278A CN102122057B CN 102122057 B CN102122057 B CN 102122057B CN 2010100002780 A CN2010100002780 A CN 2010100002780A CN 201010000278 A CN201010000278 A CN 201010000278A CN 102122057 B CN102122057 B CN 102122057B
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lens
frames group
optical frames
shooting optical
thing side
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CN102122057A (en
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蔡宗翰
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Largan Precision Co Ltd
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Largan Precision Co Ltd
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Abstract

The invention provides a camera optical lens group sequentially comprising a first lens with positive refractive power, a second lens with positive refractive power, a third lens with negative refractive power and an aperture from an object side to an image side. The object side surface and the image side surface of the first lens are both convex surfaces, the object side surface of the second lens is a concave surface, the image side surface of the second lens is a convex surface, and the object side surface and the image side surface of the second lens are non-spherical surfaces; the image side surface of the third lens is a concave surface and is provided with at least one inflexion point, the object side surface and the image side surface of the third lens are non-spherical surfaces; and the aperture is arranged between a shot object and the second lens, wherein the camera optical lens group is provided with only three lenses with refractive power. Through the configuration mode of the lens group, the size of the lens group can be effectively decreased, and the sensitivity of an optical system can be weakened to obtain greater resolving power.

Description

Shooting optical frames group
Technical field
The present invention is about a kind of shooting optical frames group; Particularly about a kind of miniaturization shooting optical frames group of the mobile phone that is applied to take pictures.
Background technology
Recent years, along with the rise of mobile phone camera, the demand of miniaturization phtographic lens day by day improves; And the photo-sensitive cell of general phtographic lens is nothing more than being sensitization coupling element (Charge Coupled Device; And progressing greatly CCD) or two kinds of complementary metal oxide semiconductor (CMOS) elements (Complementary Metal-Oxide SemiconductorSensor, CMOS Sensor), along with semiconductor process techniques; 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.
Known miniaturization phtographic lens; For reducing manufacturing cost, it is main adopting the two-piece type lens arrangement more, yet because of only two lens of tool are limited in one's ability to the revisal of aberration; Can't satisfy the camera 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 shooting optical frames 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 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 more frivolous, small-sized phtographic lens and use.
In view of this, be badly in need of a kind of frivolous electronic product of taking that can be used for, image quality is good and be unlikely to the shooting optical frames group that makes the camera lens total length long.
Summary of the invention
The present invention provides a kind of shooting optical frames group, by the thing side to comprising in regular turn as side: first lens of the positive refracting power of a tool, are all convex surface as side surface at its thing side surface; Second lens of the positive refracting power of one tool, its thing side surface are concave surface, be convex surface as side surface, and the thing side surface of these second lens and be all aspheric surface as side surface; The 3rd lens of the negative refracting power of one tool, it is a concave surface as side surface, the 3rd lens be provided with at least one point of inflexion as side surface, and the thing side surface of the 3rd lens and be all aspheric surface as side surface; And an aperture, be arranged between object and this second lens; Wherein, the lens of tool refracting power are merely three in this shooting optical frames group, and the Abbe number of these first lens is V1; The Abbe number of these second lens is V2, and the Abbe number of the 3rd lens is V3, and the thickness of these first lens on optical axis is CT1; The thickness of these second lens on optical axis is CT2; 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, satisfy the following relationship formula: | V1-V2|＜35; | V1-V3|＜15; 0.10mm＜CT1＜1.30mm; 0.10mm＜CT2＜1.00mm;-10.0＜(R1/R2) * 10＜-0.61.
The present invention is through the configuration mode of above-mentioned mirror group, and effectively the susceptibility of reducing glass group volume, reduction optical system more can obtain higher resolving power.
The present invention makes a video recording in the optical frames group, and the positive refracting power of this first lens tool can effectively shorten the optics total length of this shooting optical frames group; The positive refracting power of this second lens tool can effectively distribute the refracting power of these first lens, helps to reduce the susceptibility of system; The 3rd lens tool is born refracting power, can form one just with this second lens, negative looking in the distance (Telephoto) structure, can effectively reduce the total length of system, to keep the miniaturization of camera lens.
The present invention makes a video recording in the optical frames group, and these first lens are the biconvex lens of the positive refracting power of a tool, and biconvex lens can effectively strengthen the refracting power configuration of these first lens, and then makes the optics total length of this shooting optical frames group become shorter.The thing side surface of these second lens is concave surface, be convex surface as side surface, the effective astigmatism of update the system (Astigmatism).The 3rd lens can be a thing side surface be protruding, be recessed crescent lens or a biconcave lens as side surface, when the 3rd lens are the crescent lens of a convex-concave, can help the higher order aberratons of update the system; When the 3rd lens were a biconcave lens, the principal point (Principal Point) that then can make optical system was further from imaging surface, and helped shortening the optics total length of system, to keep the miniaturization of camera lens.
The present invention's optical frames group of making a video recording provides positive refracting power through these first lens, and when aperture placed the object side near this shooting optical frames group, can effectively shorten the optics total length of this shooting optical frames group.In addition; Above-mentioned configuration can make the outgoing pupil (Exit Pupil) of this shooting optical frames group away from imaging surface, and therefore, light will be incident on the mode near vertical incidence on the photo-sensitive cell; This is the heart far away (Telecentric) characteristic of picture side; Heart characteristic far away is very important for the photoperceptivity of now solid-state electronic photo-sensitive cell, can make the sensitization susceptibility of sense electronics optical element improve, and the minimizing system produces the possibility at dark angle.In addition, the present invention makes a video recording, and the 3rd lens are provided with the point of inflexion in the optical frames group, and the light that can more effectively suppress from the axle visual field is incident in the angle on the photo-sensitive cell, and the further aberration of modified off-axis visual field.In addition; In wide-angle optics; Need do correction to distorting (Distortion) and multiplying power look receipts poor (Chromatic Aberration of Magnification) especially; Its method is for to place system light flexion equilibrium of forces place with aperture, and so configuration mode can effectively reduce the susceptibility of system.In other words, the present invention makes a video recording in the optical frames group, when aperture being placed more near the object place, is to focus on heart characteristic far away, and the optics total length of whole shooting optical frames group can be shorter; When aperture being placed more near this second lens place, then focus on the characteristic of Wide-angle, can effectively reduce the susceptibility of system.
On the other hand, the present invention provides a kind of shooting optical frames group, by the thing side to comprising in regular turn as side: first lens of the positive refracting power of a tool, are all convex surface as side surface at its thing side surface; Second lens of the positive refracting power of one tool, its thing side surface are concave surface, be convex surface as side surface, and the thing side surface of these second lens and be all aspheric surface as side surface; The 3rd lens of the negative refracting power of one tool, it is a concave surface as side surface, the 3rd lens be provided with at least one point of inflexion as side surface, and the thing side surface of the 3rd lens and be all aspheric surface as side surface; And an aperture, be arranged between object and this second lens; Wherein, the lens of tool refracting power are merely three in this shooting optical frames group, and the thickness of these second lens on optical axis is CT2; The focal length of whole shooting optical frames group is f, and 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; The Abbe number of these second lens is V2, and the Abbe number of the 3rd lens is V3, satisfies following relationship formula: 0.05＜CT2/f＜0.19;-10.0＜(R1/R2) * 10＜-0.61; | V1-V2|＜35; | V1-V3|＜35; 0.25＜R1/f＜0.63.
Shooting optical frames group provided by the invention can be used for the frivolous electronic product of taking, and the image quality of this shooting optical frames group is good.Through the configuration mode of this shooting optical frames group, effectively the susceptibility of reducing glass group volume, reduction optical system more can obtain higher resolving power.
Description of 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 is a table six, is 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 first embodiment of the invention to the six embodiment correlationship formulas.
Drawing reference numeral
100,200,300,400,500,600 first lens
101,201,301,401,501,601 thing side surfaces
102,202,302,402,502,602 picture side surfaces
110,210,310,410,510,610 second lens
111,211,311,411,511,611 thing side surfaces
112,212,312,412,512,612 picture side surfaces
120,220,320,420,520,620 the 3rd lens
121,221,321,421,521,621 thing side surfaces
122,222,322,422,522,622 picture side surfaces
130,230,330,430,530,630 apertures
140,240,340,440,540,640 infrared fileters
150 cover glasses
160,250,350,450,550,650 imaging surfaces
The focal length of whole shooting optical frames 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 refractive index of first lens is N1
The refractive index of second lens is N2
The refractive index of the 3rd lens is N3
The Abbe number of first lens is V1
The Abbe number of second lens is V2
The Abbe number of the 3rd lens is V3
The thing side surface radius-of-curvature of first lens is R1
First lens be R2 as the side surface radius-of-curvature
The thing side surface radius-of-curvature of second lens is R3
Second lens be R4 as the side surface radius-of-curvature
The thickness of first lens on optical axis is CT1
The thickness of second lens on optical axis is CT2
The entrance pupil aperture of shooting optical frames group is EPD
The distance of aperture to sense electronics optical element on optical axis is SL
The distance of thing side surface to sense electronics optical element on optical axis of first lens is TTL
The half the of sense electronics optical element effective pixel area diagonal angle line length is ImgH
Embodiment
The present invention provides a kind of shooting optical frames group, by the thing side to comprising in regular turn as side: first lens of the positive refracting power of a tool, are all convex surface as side surface at its thing side surface; Second lens of the positive refracting power of one tool, its thing side surface are concave surface, be convex surface as side surface, and the thing side surface of these second lens and be all aspheric surface as side surface; The 3rd lens of the negative refracting power of one tool, it is a concave surface as side surface, the 3rd lens be provided with at least one point of inflexion as side surface, and the thing side surface of the 3rd lens and be all aspheric surface as side surface; And an aperture, be arranged between object and this second lens; Wherein, the lens of tool refracting power are merely three in this shooting optical frames group, and the Abbe number of these first lens is V1; The Abbe number of these second lens is V2, and the Abbe number of the 3rd lens is V3, and the thickness of these first lens on optical axis is CT1; The thickness of these second lens on optical axis is CT2; 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, satisfy the following relationship formula: | V1-V2|＜35; | V1-V3|＜15; 0.10mm＜CT1＜1.30mm; 0.10mm＜CT2＜1.00mm;-10.0＜(R1/R2) * 10＜-0.61.
When aforementioned shooting optical frames group satisfies the following relationship formula: | V1-V2|＜35 and | V1-V3|＜15, can help revising the astigmatism of this shooting optical frames group, promote its resolving power; Further, preferably satisfy the following relationship formula: | V1-V2|＜15.When aforementioned shooting optical frames group satisfies following relationship formula: 0.10mm＜CT1＜1.30mm and 0.10mm＜CT2＜1.00mm; Can make the configuration of mirror group comparatively tight; Keeping the miniaturization of camera lens, and preferable for the mouldability and the homogenieity of plastic lens ejection formation.When aforementioned shooting optical frames group satisfies the following relationship formula :-10.0＜(R1/R2) * 10＜-0.61 can help the revisal of system's spherical aberration (Spherical Aberration); Further, preferably satisfy the following relationship formula :-10.0＜(R1/R2) * 10＜-2.0.
In the aforementioned shooting optical frames of the present invention group, preferably, the thing side surface of these first lens be aspheric surface as at least one surface in the side 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 system, and promote image quality; Preferably, the thing side surface of the 3rd lens is a convex surface, with the higher order aberratons of effective update the system.
In the aforementioned shooting optical frames of the present invention group, preferably, these second lens are plastic cement material, and the 3rd lens are 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 shooting optical frames of the present invention group, the focal length of whole shooting optical frames group is f, and the focal length of these first lens is f1, preferably, satisfies following relationship formula: 1.00＜f/f1＜2.00.When f/f1 satisfies the above-mentioned relation formula; The refracting power size configure of these first lens is balance comparatively; The effective optics total length of control system; Keep the characteristic of miniaturization, and can avoid the excessive increase of high-order spherical aberration (High Order SphericalAberration) simultaneously, and then promote image quality; Further, preferably satisfy following relationship formula: 1.20＜f/f1＜1.70.
In the aforementioned shooting optical frames of the present invention group, the thickness of these second lens on optical axis is CT2, and the focal length of whole shooting optical frames group is f, preferably, satisfies following relationship formula: 0.05＜CT2/f＜0.22.When CT2/f satisfies the above-mentioned relation formula, can make the configuration of mirror group comparatively tight, keeping the miniaturization of camera lens, and preferable for the mouldability and the homogenieity of plastic lens ejection formation; Further, preferably satisfy following relationship formula: 0.05＜CT2/f＜0.19.
In the aforementioned shooting optical frames of the present invention group; This shooting optical frames group is provided with an aperture and a sense electronics optical element supplies the object imaging on it; Preferably; This aperture is arranged between object and this first lens, and so configuration is to help heart characteristic far away, and the total length of whole shooting optical frames group can be shorter; And 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 (being the optics total length of this shooting optical frames group) in this shooting optical frames group; Preferably, satisfy following relationship formula: 0.93＜SL/TTL＜1.07.When SL/TTL satisfies the above-mentioned relation formula, can guarantee the heart characteristic far away of lens combination of the present invention, with the optics total length of effective shortening system.
In the aforementioned shooting optical frames of the present invention group, the thing side surface radius-of-curvature of these first lens is R1, and the focal length of whole shooting optical frames group is f, preferably, satisfies following relationship formula: 0.25＜R1/f＜0.63.When R1/f satisfies the above-mentioned relation formula, can effectively reduce the optics total length of this shooting optical frames group, and can avoid the excessive increase of higher order aberratons; Further, preferably satisfy following relationship formula: 0.30＜R1/f＜0.50.
In the aforementioned shooting optical frames of the present invention group, the refractive index of these first lens is N1, and the refractive index of these second lens is N2, and the refractive index of the 3rd lens is N3, preferably, satisfies following relationship formula: 1.52＜N1＜1.58; 1.52＜N2＜1.58; 1.52＜N3＜1.58.When N1, N2 and N3 satisfy the above-mentioned relation formula, be to help these first lens, these second lens and the 3rd lens in the selection of optics plastic cement material, to obtain more suitable coupling.
In the aforementioned shooting optical frames of the present invention group, the focal length of whole shooting optical frames group is f, and the focal length of these second lens is f2, preferably, satisfies following relationship formula: 0.70＜f/f2＜2.00.When f/f2 satisfies the above-mentioned relation formula, can effectively distribute the refracting power of these first lens and guarantee that simultaneously the refracting power of these second lens can be not excessive, help reducing the susceptibility of system and be unlikely to produce too much aberration.
In the aforementioned shooting optical frames of the present invention group, the focal length of these second lens is f2, and the focal length of the 3rd lens is f3, preferably, satisfies following relationship formula :-1.5＜f2/f3＜-0.5.When f2/f3 satisfies the above-mentioned relation formula, be to help guaranteeing these second lens and the 3rd lens form the one positive one negative structure of looking in the distance, can effectively reduce the optics total length of system.
In the aforementioned shooting optical frames of the present invention group, the focal length of whole shooting optical frames group is f, and the entrance pupil aperture of this shooting optical frames group is EPD (Entrance Pupil Diameter), preferably, satisfies following relationship formula: 1.60＜f/EPD＜3.20.When f/EPD satisfies the above-mentioned relation formula, can make the incident light quantity of shooting optical frames group comparatively enough, and then improve the response speed of photo-sensitive cell.
In the aforementioned shooting optical frames of the present invention group, the thing side surface radius-of-curvature of these second lens is R3, these second lens be R4 as the side surface radius-of-curvature, preferably, satisfy the following relationship formula: 3.0＜(R3+R4)/(R3-R4)＜7.0.When (R3+R4)/(R3-R4) satisfies the above-mentioned relation formula, the revisal of astigmatism in the optical frames group that helps to make a video recording.
In the aforementioned shooting optical frames of the present invention group; Other is provided with a sense electronics optical element and supplies the object imaging on it; The distance of the thing side surface of these first lens to this sense electronics optical element on optical axis is TTL in this shooting optical frames group; 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＜2.10.When TTL/ImgH satisfies the above-mentioned relation formula, help keeping the miniaturization of this shooting optical frames group, to be equipped on the frivolous portable electronic product.
On the other hand, the present invention provides a kind of shooting optical frames group, by the thing side to comprising in regular turn as side: first lens of the positive refracting power of a tool, are all convex surface as side surface at its thing side surface; Second lens of the positive refracting power of one tool, its thing side surface are concave surface, be convex surface as side surface, and the thing side surface of these second lens and be all aspheric surface as side surface; The 3rd lens of the negative refracting power of one tool, it is a concave surface as side surface, the 3rd lens be provided with at least one point of inflexion as side surface, and the thing side surface of the 3rd lens and be all aspheric surface as side surface; And an aperture, be arranged between object and this second lens; Wherein, the lens of tool refracting power are merely three in this shooting optical frames group, and the thickness of these second lens on optical axis is CT2; The focal length of whole shooting optical frames group is f, and 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; The Abbe number of these second lens is V2, and the Abbe number of the 3rd lens is V3, satisfies following relationship formula: 0.05＜CT2/f＜0.19;-10.0＜(R1/R2) * 10＜-0.61; | V1-V2|＜35; | V1-V3|＜35; 0.25＜R1/f＜0.63.
When aforementioned shooting optical frames group satisfies following relationship formula: 0.05＜CT2/f＜0.19, can make the configuration of mirror group comparatively tight, keeping the miniaturization of camera lens, and preferable for the mouldability and the homogenieity of plastic lens ejection formation.When aforementioned shooting optical frames group satisfies the following relationship formula :-10.0＜(R1/R2) * 10＜-0.61 can help the revisal of system's spherical aberration; Further, preferably satisfy the following relationship formula :-10.0＜(R1/R2) * 10＜-2.0.When aforementioned shooting optical frames group satisfies the following relationship formula: | V1-V2|＜35 and | V1-V3|＜35, can help revising the astigmatism of this shooting optical frames group, promote its resolving power; Further, preferably satisfy the following relationship formula: | V1-V2|＜15; | V1-V3|＜15.When aforementioned shooting optical frames group satisfies following relationship formula: 0.25＜R1/f＜0.63, can effectively reduce the optics total length of this shooting optical frames group, and can avoid the excessive increase of higher order aberratons; Further, preferably satisfy following relationship formula: 0.30＜R1/f＜0.50.
In the aforementioned shooting optical frames of the present invention group, preferably, the thing side surface of these first lens be aspheric surface as at least one surface in the side 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 system, and promote image quality; Preferably, the thing side surface of the 3rd lens is a convex surface, with the higher order aberratons of effective update the system.
In the aforementioned shooting optical frames of the present invention group, the refractive index of these first lens is N1, and the refractive index of these second lens is N2, and the refractive index of the 3rd lens is N3, preferably, satisfies following relationship formula: 1.52＜N1＜1.58; 1.52＜N2＜1.58; 1.52＜N3＜1.58.When N1, N2 and N3 satisfy the above-mentioned relation formula, help these first lens, these second lens and the 3rd lens and in the selection of optics plastic cement material, obtain more suitable coupling.
In the aforementioned shooting optical frames of the present invention group; This shooting optical frames group is provided with an aperture and a sense electronics optical element supplies the object imaging on it; Preferably; This aperture is arranged between object and this first lens, so disposes to be beneficial to heart characteristic far away, and the total length of whole shooting optical frames group can be shorter; And the distance of this aperture to this sense electronics optical element on optical axis is SL, and the distance of the thing side surface of these first lens to this sense electronics optical element on optical axis is TTL in this shooting optical frames group, preferably, satisfies following relationship formula: 0.93＜SL/TTL＜1.07.When SL/TTL satisfies the above-mentioned relation formula, can guarantee the heart characteristic far away of lens combination of the present invention, with the optics total length of effective shortening system.
The present invention makes a video recording in the optical frames group, and 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 make a video recording optics total length of optical frames group of the present invention.
The present invention makes a video recording in the optical frames group, if lens surface is a convex surface, representes that then this lens surface is a convex surface in paraxial place; If lens surface is a concave surface, represent that then this lens surface is a concave surface in paraxial place.
The present invention's optical frames group of making a video recording will cooperate appended accompanying drawing to specify through following specific embodiment.
First embodiment:
First embodiment of the invention sees also Figure 1A, and the aberration curve of first embodiment sees also Figure 1B.The shooting optical frames group of first embodiment mainly is made up of three pieces of lens, is extremely comprised in regular turn as side by the thing side:
First lens 100 of the positive refracting power of one tool, its thing side surface 101 and be all convex surface as side surface 102, its material is a plastic cement, the thing side surface 101 of these first lens 100, is all aspheric surface as side surface 102;
Second lens 110 of the positive refracting power of one tool, its thing side surface 111 are that concave surface and picture side surface 112 are convex surface, and its material is a plastic cement, the thing side surface 111 of these second lens 110, are all aspheric surface as side surface 112;
The 3rd lens 120 of the negative refracting power of one tool; Its thing side surface 121 is that convex surface and picture side surface 122 are concave surface; Its material is a plastic cement; The thing side surface 121 of the 3rd lens 120, be all aspheric surface as side surface 122, and the 3rd lens 120 be provided with at least one point of inflexion as side surface 122;
One aperture 130 places between object and this first lens 100;
Other includes an infrared fileter (IR-filter) 140 and places placing between this infrared fileter 140 and this imaging surface 160 as reaching a cover glass (Cover-glass) 150 between a side surface 122 and the imaging surface 160 of the 3rd lens 120; The material of this infrared fileter 140 and this cover glass 150 is that glass and its do not influence should the make a video recording focal length of optical frames group of the present invention.
The equation of above-mentioned aspheric curve is represented as follows:
X ( Y ) = ( Y 2 / R ) / ( 1 + sqrt ( 1 - ( 1 + k ) * ( Y / R ) 2 ) ) + Σ i ( Ai ) * ( Y i )
Wherein:
X: be the point of Y apart from optical axis on the aspheric surface, itself and the relative height that is tangential on the tangent plane on summit on the aspheric surface optical axis;
Y: the point on the aspheric curve and the distance of optical axis;
K: conical surface coefficient;
Ai: i rank asphericity coefficient.
First embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and its relational expression is: f=2.51 (millimeter).
First embodiment makes a video recording in the optical frames group, and the f-number (f-number) of whole shooting optical frames group is Fno, and its relational expression is: Fno=2.84.
First embodiment makes a video recording in the optical frames group, and the half the of maximum visual angle is HFOV in the whole shooting optical frames group, and its relational expression is: HFOV=30.0 (degree).
First embodiment makes a video recording in the optical frames group, and the Abbe number of these first lens 100 is V1, and the Abbe number of these second lens 110 is V2, and the Abbe number of the 3rd lens 120 is V3, and its relational expression is: | V1-V2|=0.0; | V1-V3|=0.0.
First embodiment makes a video recording in the optical frames group, and the thickness of these first lens 100 on optical axis is CT1, and the thickness of these second lens 110 on optical axis is CT2, and its relational expression is: CT1=0.448mm; CT2=0.375mm.
First embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these first lens 100 is R1, these first lens 100 be R2 as the side surface radius-of-curvature, its relational expression is: (R1/R2) * 10=-2.87.
First embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the focal length of these first lens 100 is f1, and its relational expression is: f/f1=1.02.
First embodiment makes a video recording in the optical frames group, and the thickness of these second lens 110 on optical axis is CT2, and the focal length of whole shooting optical frames group is f, and its relational expression is: CT2/f=0.15.
First embodiment makes a video recording in the optical frames group; This shooting optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 160 places; The distance of this aperture 130 to this sense electronics optical element on optical axis is SL; The distance of the thing side surface 101 of these first lens 100 to this sense electronics optical element on optical axis is TTL, and its relational expression is: SL/TTL=0.99.
First embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these first lens 100 is R1, and the focal length of whole shooting optical frames group is f, and its relational expression is: R1/f=0.67.
First embodiment makes a video recording in the optical frames group, and the refractive index of these first lens 100 is N1, and the refractive index of these second lens 110 is N2, and the refractive index of the 3rd lens 120 is N3, and its relational expression is: N1=1.544; N2=1.544; N3=1.544.
First embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the focal length of these second lens 110 is f2, and its relational expression is: f/f2=0.88.
First embodiment makes a video recording in the optical frames group, and the focal length of these second lens 110 is f2, and the focal length of the 3rd lens 120 is f3, and its relational expression is: f2/f3=-1.00.
First embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the entrance pupil aperture of this shooting optical frames group is EPD, and its relational expression is: f/EPD=2.84.
First embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these second lens 110 is R3, these second lens 110 be R4 as the side surface radius-of-curvature, its relational expression is: (R3+R4)/(R3-R4)=10.90.
First embodiment makes a video recording in the optical frames group; This shooting optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 160 places; The distance of the thing side surface 101 of these first lens 100 to this sense electronics optical element on optical axis is TTL; And the half the of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, and its relational expression is: TTL/ImgH=2.16.
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:
Second embodiment of the invention sees also Fig. 2 A, and the aberration curve of second embodiment sees also Fig. 2 B.The shooting optical frames group of second embodiment mainly is made up of three pieces of lens, is extremely comprised in regular turn as side by the thing side:
First lens 200 of the positive refracting power of one tool, its thing side surface 201 and be all convex surface as side surface 202, its material is a plastic cement, the thing side surface 201 of these first lens 200, is all aspheric surface as side surface 202;
Second lens 210 of the positive refracting power of one tool, its thing side surface 211 are that concave surface and picture side surface 212 are convex surface, and its material is a plastic cement, the thing side surface 211 of these second lens 210, are all aspheric surface as side surface 212;
The 3rd lens 220 of the negative refracting power of one tool; Its thing side surface 221 and be all concave surface as side surface 222; Its material is a plastic cement, the thing side surface 221 of the 3rd lens 220, is all aspheric surface as side surface 222, and the 3rd lens 220 be provided with at least one point of inflexion as side surface 222;
One aperture 230 places between object and this first lens 200;
Other includes an infrared fileter 240 and places looking like between a side surface 222 and the imaging surface 250 of the 3rd lens 220; The material of this infrared fileter 240 is that glass and its do not influence should the make a video recording focal length of optical frames group of the present invention.
The equational expression of the second embodiment aspheric curve is as the pattern of first embodiment.
Second embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and its relational expression is: f=4.64 (millimeter).
Second embodiment makes a video recording in the optical frames group, and the f-number of whole shooting optical frames group is Fno, and its relational expression is: Fno=2.73.
Second embodiment makes a video recording in the optical frames group, and the half the of maximum visual angle is HFOV in the whole shooting optical frames group, and its relational expression is: HFOV=30.5 (degree).
Second embodiment makes a video recording in the optical frames group, and the Abbe number of these first lens 200 is V1, and the Abbe number of these second lens 210 is V2, and the Abbe number of the 3rd lens 220 is V3, and its relational expression is: | V1-V2|=25.7; | V1-V3|=32.5.
Second embodiment makes a video recording in the optical frames group, and the thickness of these first lens 200 on optical axis is CT1, and the thickness of these second lens 210 on optical axis is CT2, and its relational expression is: CT1=0.770mm; CT2=0.517mm.
Second embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these first lens 200 is R1, these first lens 200 be R2 as the side surface radius-of-curvature, its relational expression is: (R1/R2) * 10=-2.45.
Second embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the focal length of these first lens 200 is f1, and its relational expression is: f/f1=1.36.
Second embodiment makes a video recording in the optical frames group, and the thickness of these second lens 210 on optical axis is CT2, and the focal length of whole shooting optical frames group is f, and its relational expression is: CT2/f=0.11.
Second embodiment makes a video recording in the optical frames group; This shooting optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 250 places; The distance of this aperture 230 to this sense electronics optical element on optical axis is SL; The distance of the thing side surface 201 of these first lens 200 to this sense electronics optical element on optical axis is TTL, and its relational expression is: SL/TTL=0.98.
Second embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these first lens 200 is R1, and the focal length of whole shooting optical frames group is f, and its relational expression is: R1/f=0.49.
Second embodiment makes a video recording in the optical frames group, and the refractive index of these first lens 200 is N1, and the refractive index of these second lens 210 is N2, and the refractive index of the 3rd lens 220 is N3, and its relational expression is: N1=1.544; N2=1.583; N3=1.632.
Second embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the focal length of these second lens 210 is f2, and its relational expression is: f/f2=0.15.
Second embodiment makes a video recording in the optical frames group, and the focal length of these second lens 210 is f2, and the focal length of the 3rd lens 220 is f3, and its relational expression is: f2/f3=-4.67.
Second embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the entrance pupil aperture of this shooting optical frames group is EPD, and its relational expression is: f/EPD=2.73.
Second embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these second lens 210 is R3, these second lens 210 be R4 as the side surface radius-of-curvature, its relational expression is: (R3+R4)/(R3-R4)=-16.31.
Second embodiment makes a video recording in the optical frames group; This shooting optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 250 places; The distance of the thing side surface 201 of these first lens 200 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=1.88.
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:
Third embodiment of the invention sees also Fig. 3 A, and the aberration curve of the 3rd embodiment sees also Fig. 3 B.The shooting optical frames group of the 3rd embodiment mainly is made up of three pieces of lens, is extremely comprised in regular turn as side by the thing side:
First lens 300 of the positive refracting power of one tool, its thing side surface 301 and be all convex surface as side surface 302, its material is a plastic cement, the thing side surface 301 of these first lens 300, is all aspheric surface as side surface 302;
Second lens 310 of the positive refracting power of one tool, its thing side surface 311 are that concave surface and picture side surface 312 are convex surface, and its material is a plastic cement, the thing side surface 311 of these second lens 310, are all aspheric surface as side surface 312;
The 3rd lens 320 of the negative refracting power of one tool; Its thing side surface 321 is that convex surface and picture side surface 322 are concave surface; Its material is a plastic cement; The thing side surface 321 of the 3rd lens 320, be all aspheric surface as side surface 322, and the 3rd lens 320 be provided with at least one point of inflexion as side surface 322;
One aperture 330 places between these first lens 300 and this second lens 310;
Other includes an infrared fileter 340 and places looking like between a side surface 322 and the imaging surface 350 of the 3rd lens 320; The material of this infrared fileter 340 is that glass and its do not influence should the make a video recording focal length of optical frames group of the present invention.
The equational expression of the 3rd embodiment aspheric curve is as the pattern of first embodiment.
The 3rd embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and its relational expression is: f=4.17 (millimeter).
The 3rd embodiment makes a video recording in the optical frames group, and the f-number of whole shooting optical frames group is Fno, and its relational expression is: Fno=2.85.
The 3rd embodiment makes a video recording in the optical frames group, and the half the of maximum visual angle is HFOV in the whole shooting optical frames group, and its relational expression is: HFOV=33.5 (degree).
The 3rd embodiment makes a video recording in the optical frames group, and the Abbe number of these first lens 300 is V1, and the Abbe number of these second lens 310 is V2, and the Abbe number of the 3rd lens 320 is V3, and its relational expression is: | V1-V2|=0.0; | V1-V3|=0.0.
The 3rd embodiment makes a video recording in the optical frames group, and the thickness of these first lens 300 on optical axis is CT1, and the thickness of these second lens 310 on optical axis is CT2, and its relational expression is: CT1=0.597mm; CT2=0.745mm.
The 3rd embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these first lens 300 is R1, these first lens 300 be R2 as the side surface radius-of-curvature, its relational expression is: (R1/R2) * 10=-2.72.
The 3rd embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the focal length of these first lens 300 is f1, and its relational expression is: f/f1=0.73.
The 3rd embodiment makes a video recording in the optical frames group, and the thickness of these second lens 310 on optical axis is CT2, and the focal length of whole shooting optical frames group is f, and its relational expression is: CT2/f=0.18.
The 3rd embodiment makes a video recording in the optical frames group; This shooting optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 350 places; The distance of this aperture 330 to this sense electronics optical element on optical axis is SL; The distance of the thing side surface 301 of these first lens 300 to this sense electronics optical element on optical axis is TTL, and its relational expression is: SL/TTL=0.83.
The 3rd embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these first lens 300 is R1, and the focal length of whole shooting optical frames group is f, and its relational expression is: R1/f=0.93.
The 3rd embodiment makes a video recording in the optical frames group, and the refractive index of these first lens 300 is N1, and the refractive index of these second lens 310 is N2, and the refractive index of the 3rd lens 320 is N3, and its relational expression is: N1=1.544; N2=1.544; N3=1.544.
The 3rd embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the focal length of these second lens 310 is f2, and its relational expression is: f/f2=1.12.
The 3rd embodiment makes a video recording in the optical frames group, and the focal length of these second lens 310 is f2, and the focal length of the 3rd lens 320 is f3, and its relational expression is: f2/f3=-0.81.
The 3rd embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the entrance pupil aperture of this shooting optical frames group is EPD, and its relational expression is: f/EPD=2.85.
The 3rd embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these second lens 310 is R3, these second lens 310 be R4 as the side surface radius-of-curvature, its relational expression is: (R3+R4)/(R3-R4)=4.75.
The 3rd embodiment makes a video recording in the optical frames group; This shooting optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 350 places; The distance of the thing side surface 301 of these first lens 300 to this sense electronics optical element on optical axis is TTL; And the half the of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, and its relational expression is: TTL/ImgH=2.04.
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 (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:
Fourth embodiment of the invention sees also Fig. 4 A, and the aberration curve of the 4th embodiment sees also Fig. 4 B.The shooting optical frames group of the 4th embodiment mainly is made up of three pieces of lens, is extremely comprised in regular turn as side by the thing side:
First lens 400 of the positive refracting power of one tool, its thing side surface 401 and be all convex surface as side surface 402, its material is a plastic cement, the thing side surface 401 of these first lens 400, is all aspheric surface as side surface 402;
Second lens 410 of the positive refracting power of one tool, its thing side surface 411 are that concave surface and picture side surface 412 are convex surface, and its material is a plastic cement, the thing side surface 411 of these second lens 410, are all aspheric surface as side surface 412;
The 3rd lens 420 of the negative refracting power of one tool; Its thing side surface 421 is that convex surface and picture side surface 422 are concave surface; Its material is a plastic cement; The thing side surface 421 of the 3rd lens 420, be all aspheric surface as side surface 422, and the 3rd lens 420 be provided with at least one point of inflexion as side surface 422;
One aperture 430 places between object and this first lens 400;
Other includes an infrared fileter 440 and places looking like between a side surface 422 and the imaging surface 450 of the 3rd lens 420; The material of this infrared fileter 440 is that glass and its do not influence should the make a video recording focal length of optical frames group of the present invention.
The equational expression of the 4th embodiment aspheric curve is as the pattern of first embodiment.
The 4th embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and its relational expression is: f=4.13 (millimeter).
The 4th embodiment makes a video recording in the optical frames group, and the f-number of whole shooting optical frames group is Fno, and its relational expression is: Fno=2.85.
The 4th embodiment makes a video recording in the optical frames group, and the half the of maximum visual angle is HFOV in the whole shooting optical frames group, and its relational expression is: HFOV=33.4 (degree).
The 4th embodiment makes a video recording in the optical frames group, and the Abbe number of these first lens 400 is V1, and the Abbe number of these second lens 410 is V2, and the Abbe number of the 3rd lens 420 is V3, and its relational expression is: | V1-V2|=0.1; | V1-V3|=0.1.
The 4th embodiment makes a video recording in the optical frames group, and the thickness of these first lens 400 on optical axis is CT1, and the thickness of these second lens 410 on optical axis is CT2, and its relational expression is: CT1=0.647mm; CT2=0.440mm.
The 4th embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these first lens 400 is R1, these first lens 400 be R2 as the side surface radius-of-curvature, its relational expression is: (R1/R2) * 10=-0.88.
The 4th embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the focal length of these first lens 400 is f1, and its relational expression is: f/f1=1.25.
The 4th embodiment makes a video recording in the optical frames group, and the thickness of these second lens 410 on optical axis is CT2, and the focal length of whole shooting optical frames group is f, and its relational expression is: CT2/f=0.11.
The 4th embodiment makes a video recording in the optical frames group; This shooting optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 450 places; The distance of this aperture 430 to this sense electronics optical element on optical axis is SL; The distance of the thing side surface 401 of these first lens 400 to this sense electronics optical element on optical axis is TTL, and its relational expression is: SL/TTL=0.99.
The 4th embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these first lens 400 is R1, and the focal length of whole shooting optical frames group is f, and its relational expression is: R1/f=0.46.
The 4th embodiment makes a video recording in the optical frames group, and the refractive index of these first lens 400 is N1, and the refractive index of these second lens 410 is N2, and the refractive index of the 3rd lens 420 is N3, and its relational expression is: N1=1.530; N2=1.544; N3=1.544.
The 4th embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the focal length of these second lens 410 is f2, and its relational expression is: f/f2=0.07.
The 4th embodiment makes a video recording in the optical frames group, and the focal length of these second lens 410 is f2, and the focal length of the 3rd lens 420 is f3, and its relational expression is: f2/f3=-3.61.
The 4th embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the entrance pupil aperture of this shooting optical frames group is EPD, and its relational expression is: f/EPD=2.85.
The 4th embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these second lens 410 is R3, these second lens 410 be R4 as the side surface radius-of-curvature, its relational expression is: (R3+R4)/(R3-R4)=-13.83.
The 4th embodiment makes a video recording in the optical frames group; This shooting optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 450 places; The distance of the thing side surface 401 of these first lens 400 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=1.75.
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:
Fifth embodiment of the invention sees also Fig. 5 A, and the aberration curve of the 5th embodiment sees also Fig. 5 B.The shooting optical frames group of the 5th embodiment mainly is made up of three pieces of lens, is extremely comprised in regular turn as side by the thing side:
First lens 500 of the positive refracting power of one tool, its thing side surface 501 and be all convex surface as side surface 502, its material is a plastic cement, the thing side surface 501 of these first lens 500, is all aspheric surface as side surface 502;
Second lens 510 of the positive refracting power of one tool, its thing side surface 511 are that concave surface and picture side surface 512 are convex surface, and its material is a plastic cement, the thing side surface 511 of these second lens 510, are all aspheric surface as side surface 512;
The 3rd lens 520 of the negative refracting power of one tool; Its thing side surface 521 is that convex surface and picture side surface 522 are concave surface; Its material is a plastic cement; The thing side surface 521 of the 3rd lens 520, be all aspheric surface as side surface 522, and the 3rd lens 520 be provided with at least one point of inflexion as side surface 522;
One aperture 530 places between object and this first lens 500;
Other includes an infrared fileter 540 and places looking like between a side surface 522 and the imaging surface 550 of the 3rd lens 520; The material of this infrared fileter 540 is that glass and its do not influence should the make a video recording focal length of optical frames group of the present invention.
The equational expression of the 5th embodiment aspheric curve is as the pattern of first embodiment.
The 5th embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and its relational expression is: f=4.16 (millimeter).
The 5th embodiment makes a video recording in the optical frames group, and the f-number of whole shooting optical frames group is Fno, and its relational expression is: Fno=2.85.
The 5th embodiment makes a video recording in the optical frames group, and the half the of maximum visual angle is HFOV in the whole shooting optical frames group, and its relational expression is: HFOV=33.3 (degree).
The 5th embodiment makes a video recording in the optical frames group, and the Abbe number of these first lens 500 is V1, and the Abbe number of these second lens 510 is V2, and the Abbe number of the 3rd lens 520 is V3, and its relational expression is: | V1-V2|=0.1; | V1-V3|=0.9.
The 5th embodiment makes a video recording in the optical frames group, and the thickness of these first lens 500 on optical axis is CT1, and the thickness of these second lens 510 on optical axis is CT2, and its relational expression is: CT1=0.518mm; CT2=0.495mm.
The 5th embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these first lens 500 is R1, these first lens 500 be R2 as the side surface radius-of-curvature, its relational expression is: (R1/R2) * 10=-1.90.
The 5th embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the focal length of these first lens 500 is f1, and its relational expression is: f/f1=1.07.
The 5th embodiment makes a video recording in the optical frames group, and the thickness of these second lens 510 on optical axis is CT2, and the focal length of whole shooting optical frames group is f, and its relational expression is: CT2/f=0.12.
The 5th embodiment makes a video recording in the optical frames group; This shooting optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 550 places; The distance of this aperture 530 to this sense electronics optical element on optical axis is SL; The distance of the thing side surface 501 of these first lens 500 to this sense electronics optical element on optical axis is TTL, and its relational expression is: SL/TTL=0.98.
The 5th embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these first lens 500 is R1, and the focal length of whole shooting optical frames group is f, and its relational expression is: R1/f=0.60.
The 5th embodiment makes a video recording in the optical frames group, and the refractive index of these first lens 500 is N1, and the refractive index of these second lens 510 is N2, and the refractive index of the 3rd lens 520 is N3, and its relational expression is: N1=1.544; N2=1.530; N3=1.514.
The 5th embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the focal length of these second lens 510 is f2, and its relational expression is: f/f2=0.46.
The 5th embodiment makes a video recording in the optical frames group, and the focal length of these second lens 510 is f2, and the focal length of the 3rd lens 520 is f3, and its relational expression is: f2/f3=-1.20.
The 5th embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the entrance pupil aperture of this shooting optical frames group is EPD, and its relational expression is: f/EPD=2.85.
The 5th embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these second lens 510 is R3, these second lens 510 be R4 as the side surface radius-of-curvature, its relational expression is: (R3+R4)/(R3-R4)=88.62.
The 5th embodiment makes a video recording in the optical frames group; This shooting optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 550 places; The distance of the thing side surface 501 of these first lens 500 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=1.75.
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:
Sixth embodiment of the invention sees also Fig. 6 A, and the aberration curve of the 6th embodiment sees also Fig. 6 B.The shooting optical frames group of the 6th embodiment mainly is made up of three pieces of lens, is extremely comprised in regular turn as side by the thing side:
First lens 600 of the positive refracting power of one tool, its thing side surface 601 and be all convex surface as side surface 602, its material is a plastic cement, the thing side surface 601 of these first lens 600, is all aspheric surface as side surface 602;
Second lens 610 of the positive refracting power of one tool, its thing side surface 611 are that concave surface and picture side surface 612 are convex surface, and its material is a plastic cement, the thing side surface 611 of these second lens 610, are all aspheric surface as side surface 612;
The 3rd lens 620 of the negative refracting power of one tool; Its thing side surface 621 and be all concave surface as side surface 622; Its material is a plastic cement, the thing side surface 621 of the 3rd lens 620, is all aspheric surface as side surface 622, and the 3rd lens 620 be provided with at least one point of inflexion as side surface 622;
One aperture 630 places between these first lens 600 and this second lens 610;
Other includes an infrared fileter 640 and places looking like between a side surface 622 and the imaging surface 650 of the 3rd lens 620; The material of this infrared fileter 640 is that glass and its do not influence should the make a video recording focal length of optical frames group of the present invention.
The equational expression of the 6th embodiment aspheric curve is as the pattern of first embodiment.
The 6th embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and its relational expression is: f=5.22 (millimeter).
The 6th embodiment makes a video recording in the optical frames group, and the f-number of whole shooting optical frames group is Fno, and its relational expression is: Fno=2.90.
The 6th embodiment makes a video recording in the optical frames group, and the half the of maximum visual angle is HFOV in the whole shooting optical frames group, and its relational expression is: HFOV=32.2 (degree).
The 6th embodiment makes a video recording in the optical frames group, and the Abbe number of these first lens 600 is V1, and the Abbe number of these second lens 610 is V2, and the Abbe number of the 3rd lens 620 is V3, and its relational expression is: | V1-V2|=33.4; | V1-V3|=33.4.
The 6th embodiment makes a video recording in the optical frames group, and the thickness of these first lens 600 on optical axis is CT1, and the thickness of these second lens 610 on optical axis is CT2, and its relational expression is: CT1=1.200mm; CT2=1.200mm.
The 6th embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these first lens 600 is R1, these first lens 600 be R2 as the side surface radius-of-curvature, its relational expression is: (R1/R2) * 10=-1.22.
The 6th embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the focal length of these first lens 600 is f1, and its relational expression is: f/f1=1.45.
The 6th embodiment makes a video recording in the optical frames group, and the thickness of these second lens 610 on optical axis is CT2, and the focal length of whole shooting optical frames group is f, and its relational expression is: CT2/f=0.23.
The 6th embodiment makes a video recording in the optical frames group; This shooting optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 650 places; The distance of this aperture 630 to this sense electronics optical element on optical axis is SL; The distance of the thing side surface 601 of these first lens 600 to this sense electronics optical element on optical axis is TTL, and its relational expression is: SL/TTL=0.78.
The 6th embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these first lens 600 is R1, and the focal length of whole shooting optical frames group is f, and its relational expression is: R1/f=0.39.
The 6th embodiment makes a video recording in the optical frames group, and the refractive index of these first lens 600 is N1, and the refractive index of these second lens 610 is N2, and the refractive index of the 3rd lens 620 is N3, and its relational expression is: N1=1.514; N2=1.633; N3=1.633.
The 6th embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the focal length of these second lens 610 is f2, and its relational expression is: f/f2=1.62.
The 6th embodiment makes a video recording in the optical frames group, and the focal length of these second lens 610 is f2, and the focal length of the 3rd lens 620 is f3, and its relational expression is: f2/f3=-1.52.
The 6th embodiment makes a video recording in the optical frames group, and the focal length of whole shooting optical frames group is f, and the entrance pupil aperture of this shooting optical frames group is EPD, and its relational expression is: f/EPD=2.90.
The 6th embodiment makes a video recording in the optical frames group, and the thing side surface radius-of-curvature of these second lens 610 is R3, these second lens 610 be R4 as the side surface radius-of-curvature, its relational expression is: (R3+R4)/(R3-R4)=4.01.
The 6th embodiment makes a video recording in the optical frames group; This shooting optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it in these imaging surface 650 places; The distance of the thing side surface 601 of these first lens 600 to this sense electronics optical element on optical axis is TTL; And the half the of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, and its relational expression is: TTL/ImgH=1.80.
The detailed optical data of 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 (respectively corresponding diagram 7 to Figure 18) is depicted as the make a video recording different numerical value change tables of optical frames group embodiment of the present invention; The all true gained of testing of numerical value change of right each embodiment of the present invention; Even use different numerical value; The product of same structure must belong to protection category of the present invention, thus above explanation is described and accompanying drawing only as exemplary, non-in order to limit claim of the present invention.Table ten three (corresponding Figure 19) is the numeric data of the corresponding correlationship formula of the present invention of each embodiment.
Though the present invention discloses as above with embodiment; Right its is not that any person of ordinary skill in the field is not breaking away from the spirit and scope of the present invention in order to qualification the present invention; When doing a little change and retouching, so protection scope of the present invention is when being as the criterion with claim institute confining spectrum.

Claims (25)

1. a shooting optical frames group is characterized in that, said shooting optical frames group by the thing side to comprising in regular turn as side:
First lens of the positive refracting power of one tool, are all convex surface as side surface at its thing side surface;
Second lens of the positive refracting power of one tool, its thing side surface are concave surface, be convex surface as side surface, and the thing side surface of said second lens and be all aspheric surface as side surface;
The 3rd lens of the negative refracting power of one tool, it is a concave surface as side surface, said the 3rd lens be provided with at least one point of inflexion as side surface, and the thing side surface of said the 3rd lens and be all aspheric surface as side surface; And
One aperture is arranged between object and said second lens;
Wherein, the lens of tool refracting power are merely three in the said shooting optical frames group, and the Abbe number of said first lens is V1; The Abbe number of said second lens is V2, and the Abbe number of said the 3rd lens is V3, and the thickness of said first lens on optical axis is CT1; The thickness of said second lens on optical axis is CT2; 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:
|V1-V2|＜35；
|V1-V3|＜15；
0.10mm＜CT1＜1.30mm；
0.10mm＜CT2＜1.00mm；
-10.0＜(R1/R2)*10＜-0.61。
2. shooting optical frames group as claimed in claim 1 is characterized in that said second lens are plastic cement material, and said the 3rd lens are plastic cement material.
3. shooting optical frames group as claimed in claim 2 is characterized in that, the thing side surface of said first lens be aspheric surface as at least one surface in the side surface, and the thing side surface of said the 3rd lens is a convex surface.
4. shooting optical frames group as claimed in claim 2 is characterized in that, the focal length of whole shooting optical frames group is f, and the focal length of said first lens is f1, satisfies the following relationship formula:
1.00＜f/f1＜2.00。
5. shooting optical frames group as claimed in claim 4 is characterized in that, the focal length of whole shooting optical frames group is f, and the focal length of said first lens is f1, satisfies the following relationship formula:
1.20＜f/f1＜1.70。
6. shooting optical frames group as claimed in claim 2 is characterized in that, the thickness of said second lens on optical axis is CT2, and the focal length of whole shooting optical frames group is f, satisfies the following relationship formula:
0.05＜CT2/f＜0.22。
7. shooting optical frames group as claimed in claim 6 is characterized in that, the thickness of said second lens on optical axis is CT2, and the focal length of whole shooting optical frames group is f, satisfies the following relationship formula:
0.05＜CT2/f＜0.19。
8. shooting optical frames group as claimed in claim 3 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:
-10.0＜(R1/R2)*10＜-2.0。
9. shooting optical frames group as claimed in claim 2; It is characterized in that; Said shooting optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it, and said aperture is arranged between object and said first lens, and said aperture to the distance of said sense electronics optical element on optical axis is SL; The thing side surface of first lens described in the said shooting optical frames group to the distance of said sense electronics optical element on optical axis is TTL, satisfies the following relationship formula:
0.93＜SL/TTL＜1.07。
10. shooting optical frames group as claimed in claim 9 is characterized in that, the thing side surface radius-of-curvature of said first lens is R1, and the focal length of whole shooting optical frames group is f, satisfies the following relationship formula:
0.25＜R1/f＜0.63。
11. shooting optical frames group as claimed in claim 10 is characterized in that, the thing side surface radius-of-curvature of said first lens is R1, and the focal length of whole shooting optical frames group is f, satisfies the following relationship formula:
0.30＜R1/f＜0.50。
12. shooting optical frames group as claimed in claim 3 is characterized in that the refractive index of said first lens is N1, the refractive index of said second lens is N2, and the refractive index of said the 3rd lens is N3, satisfies the following relationship formula:
1.52＜N1＜1.58；
1.52＜N2＜1.58；
1.52＜N3＜1.58。
13. shooting optical frames group as claimed in claim 12 is characterized in that, the focal length of whole shooting optical frames group is f, and the focal length of said second lens is f2, satisfies the following relationship formula:
0.70＜f/f2＜2.00。
14. shooting optical frames group as claimed in claim 13 is characterized in that the focal length of said second lens is f2, the focal length of said the 3rd lens is f3, satisfies the following relationship formula:
-1.5＜f2/f3＜-0.5。
15. shooting optical frames group as claimed in claim 3 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:
|V1-V2|＜15。
16. shooting optical frames group as claimed in claim 3 is characterized in that, the focal length of whole shooting optical frames group is f, and the entrance pupil aperture of said shooting optical frames group is EPD, satisfies the following relationship formula:
1.60＜f/EPD＜3.20。
17. shooting optical frames group as claimed in claim 3 is characterized in that, the thing side surface radius-of-curvature of said second lens is R3, said second lens be R4 as the side surface radius-of-curvature, satisfy the following relationship formula:
3.0＜(R3+R4)/(R3-R4)＜7.0。
18. shooting optical frames group as claimed in claim 2; It is characterized in that; Said shooting optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it; The thing side surface of first lens described in the said shooting optical frames group 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＜2.10。
19. a shooting optical frames group is characterized in that said shooting optical frames group is extremely comprised as side by the thing side in regular turn:
First lens of the positive refracting power of one tool, are all convex surface as side surface at its thing side surface;
Second lens of the positive refracting power of one tool, its thing side surface are concave surface, be convex surface as side surface, and the thing side surface of said second lens and be all aspheric surface as side surface;
The 3rd lens of the negative refracting power of one tool, it is a concave surface as side surface, said the 3rd lens be provided with at least one point of inflexion as side surface, and the thing side surface of said the 3rd lens and be all aspheric surface as side surface; And
One aperture is arranged between object and said second lens;
Wherein, the lens of tool refracting power are merely three in the said shooting optical frames group, and the thickness of said second lens on optical axis is CT2; The focal length of whole shooting optical frames group is f, 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 Abbe number of said first lens is V1; The Abbe number of said second lens is V2, and the Abbe number of said the 3rd lens is V3, satisfies the following relationship formula:
0.05＜CT2/f＜0.19；
-10.0＜(R1/R2)*10＜-0.61；
|V1-V2|＜35；
|V1-V3|＜35；
0.25＜R1/f＜0.63。
20. shooting optical frames group as claimed in claim 19 is characterized in that, the thing side surface of said first lens be aspheric surface as at least one surface in the side surface, and the thing side surface of said the 3rd lens is a convex surface.
21. shooting optical frames group as claimed in claim 19 is characterized in that the refractive index of said first lens is N1, the refractive index of said second lens is N2, and the refractive index of said the 3rd lens is N3, satisfies the following relationship formula:
1.52＜N1＜1.58；
1.52＜N2＜1.58；
1.52＜N3＜1.58。
22. shooting optical frames 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, and the Abbe number of said the 3rd lens is V3, satisfies the following relationship formula:
|V1-V2|＜15；
|V1-V3|＜15。
23. shooting optical frames group as claimed in claim 20; It is characterized in that; Said shooting optical frames group is provided with a sense electronics optical element in addition and supplies the object imaging on it, and said aperture is arranged between object and said first lens, and said aperture to the distance of said sense electronics optical element on optical axis is SL; The thing side surface of first lens described in the said shooting optical frames group to the distance of said sense electronics optical element on optical axis is TTL, satisfies the following relationship formula:
0.93＜SL/TTL＜1.07。
24. shooting optical frames group as claimed in claim 23 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:
-10.0＜(R1/R2)*10＜-2.0。
25. shooting optical frames group as claimed in claim 19 is characterized in that, the thing side surface radius-of-curvature of said first lens is R1, and the focal length of whole shooting optical frames group is f, satisfies the following relationship formula:
0.30＜R1/f＜0.50。
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CN104297907A (en) * 2014-10-27 2015-01-21 东莞市旭业光电科技有限公司 Wide-angle optical lens assembly
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1766690A (en) * 2004-10-28 2006-05-03 清华大学 Minisize camera lens system
JP2007127960A (en) * 2005-11-07 2007-05-24 Konica Minolta Opto Inc Imaging optical system, imaging lens device and digital equipment
CN101082694A (en) * 2006-05-31 2007-12-05 日本电产科宝株式会社 Imaging lens
JP2008096621A (en) * 2006-10-11 2008-04-24 Nidec Copal Corp Imaging lens
CN101369045A (en) * 2007-08-17 2009-02-18 鸿富锦精密工业（深圳）有限公司 Lens system
JP2009223251A (en) * 2008-03-19 2009-10-01 Olympus Corp Image pickup apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1766690A (en) * 2004-10-28 2006-05-03 清华大学 Minisize camera lens system
JP2007127960A (en) * 2005-11-07 2007-05-24 Konica Minolta Opto Inc Imaging optical system, imaging lens device and digital equipment
CN101082694A (en) * 2006-05-31 2007-12-05 日本电产科宝株式会社 Imaging lens
JP2008096621A (en) * 2006-10-11 2008-04-24 Nidec Copal Corp Imaging lens
CN101369045A (en) * 2007-08-17 2009-02-18 鸿富锦精密工业（深圳）有限公司 Lens system
JP2009223251A (en) * 2008-03-19 2009-10-01 Olympus Corp Image pickup apparatus

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