CN201852989U - Optical lens group - Google Patents
Optical lens group Download PDFInfo
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- CN201852989U CN201852989U CN2010206205500U CN201020620550U CN201852989U CN 201852989 U CN201852989 U CN 201852989U CN 2010206205500 U CN2010206205500 U CN 2010206205500U CN 201020620550 U CN201020620550 U CN 201020620550U CN 201852989 U CN201852989 U CN 201852989U
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Abstract
The utility model discloses an optical lens group which sequentially comprises a first lens with positive refractive power, a second lens with positive refractive power, a third lens with negative refractive power and a fourth lens with positive refractive power from an object side to an image side, wherein in the third lens, the surface of the object side is a concave surface, the surface of the image side is a convex surface, and at least one in the surfaces of the object side and the image side is an aspheric surface; in the fourth lens, the surface of the object side and the surface of the image side are aspheric surfaces; and in the optical lens group, the four pieces of lenses have the refractive power.
Description
Technical field
The utility model system is about a kind of optical lens group; Particularly about a kind of miniaturization optical lens group that is applied on the electronic product.
Background technology
Recent years, along with the rise of the portable electronic product with camera function, the demand of miniaturization pick-up lens day by day improves.And the photo-sensitive cell of general pick-up lens is nothing more than being sensitization coupling element (Charge Coupled Device, CCD) or two kinds of complementary matal-oxide semiconductor elements (Complementary Metal-Oxide Semiconductor Sensor, CMOS Sensor).And because progressing greatly of process technique makes the Pixel Dimensions of photo-sensitive cell dwindle, the miniaturization pick-up lens develops toward high pixel field gradually, therefore, and to the also increase day by day of requirement of image quality.Tradition is equipped on the miniaturization pick-up lens on the portable electronic product, many employing three-chip type lens arrangements are main, lens combination is born second lens of refracting power and the 3rd lens of the positive refracting power of a tool by thing side to first lens, the tool that as side are the positive refracting power of a tool in regular turn, as United States Patent (USP) the 7th, shown in 145, No. 736.Because the progress of process technique and electronic product are under the trend of lightening development, the photo-sensitive cell Pixel Dimensions constantly dwindles, and the system that makes improves more to the requirement of image quality, and known three-chip type lens combination can't satisfy the more camera lens module of high-order.
United States Patent (USP) the 7th, 660 has disclosed a kind of four-piece type lens combination No. 049, and wherein first lens are that a negative refracting power has half moon-shaped lens, can effectively eliminate the aberration and the astigmatism of system, improves image quality.But the method causes the total length of system longer, and can't improve the too high problem of the second positive lens susceptibility
The utility model content
The utility model provides a kind of optical lens group, is extremely comprised in regular turn as side by the thing side: first lens of the positive refracting power of a tool; Second lens of the positive refracting power of one tool; The 3rd lens of the negative refracting power of one tool, its thing side surface are concave surface and are convex surface as side surface, this thing side with as having at least one side to be aspheric surface in the side surface; And the 4th lens of the positive refracting power of a tool, this thing side and be all aspheric surface as side surface; Wherein, the lens of tool refracting power are four in this optical lens group; Wherein, 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 the 4th lens is R7, the 4th lens be R8 as the side surface radius-of-curvature, the thickness of the 4th lens on optical axis is CT4, and the focal length of whole optical lens group is f, is to satisfy the following relationship formula:
0.0＜CT1/CT2＜0.6；
| R7/R8|＜1.0; And
0.25＜CT4/f＜0.85。
On the other hand, the utility model provides a kind of optical lens group, is extremely comprised in regular turn as side by the thing side: first lens of the positive refracting power of a tool; Second lens of the positive refracting power of one tool, it is a convex surface as side surface; The 3rd lens of the negative refracting power of one tool, its thing side surface are concave surface and are convex surface as side surface, the thing side surface of the 3rd lens be aspheric surface as at least one surface in the side surface; And the 4th lens of the positive refracting power of a tool, its thing side surface is a convex surface, the thing side surface of the 4th lens be all aspheric surface as side surface; Wherein, the thickness of these first lens on optical axis is CT1, the thickness of these second lens on optical axis is CT2, the thickness of the 4th lens on optical axis is CT4, and the focal length of whole optical lens group is f, wherein, this optical lens group is provided with an aperture in addition, this aperture to the 4th lens are Sd as the distance of side surface on optical axis, and these first lens thing side surface to the 4th lens are Td as the distance of side surface on optical axis, are to satisfy the following relationship formula:
0.0＜CT1/CT2＜0.6；
0.25＜CT4/f＜0.85; And
0.75＜Sd/Td＜0.94。
By above-mentioned mirror configuration set mode, can effectively dwindle the camera lens volume, reduce system sensitivity, obtain higher resolving power.In addition, known imaging lens system and infrared optical lens are the lens that need to use unlike material, infrared optical system lens use germanium or other materials (as: ZnSe mostly, ZnS etc.) make, but the optical lens group of this case, except good shooting optical imagery quality can be provided, also can provide the infrared optical system to come imaging, make that the range of application of optical lens group of the utility model is more more extensive than general camera-lens system.
In the utility model optical lens group, the positive refracting power of this first lens tool provides system required part refracting power, helps to shorten the total length of this optical lens group; The positive refracting power of this second lens tool can be beneficial to the refracting power that distributes these first lens, helps to reduce the susceptibility of system; The 3rd lens tool is born refracting power, and the aberration that can effectively be produced the positive refracting power of system is done revisal, and helps the aberration of update the system simultaneously; The positive refracting power of the 4th lens tool can help the higher order aberratons of update the system, improves the resolving power of this optical lens group.
In addition, can be provided with the point of inflexion, be incident in angle on the photo-sensitive cell more suppressing light effectively from the axle visual field in the 3rd lens and the 4th lens, and the further aberration of modified off-axis visual field.
Description of drawings
The optical lens group synoptic diagram of Figure 1A the utility model first embodiment;
The aberration curve figure of Figure 1B the utility model first embodiment;
The optical lens group synoptic diagram of Fig. 2 A the utility model second embodiment;
The aberration curve figure of Fig. 2 B the utility model second embodiment;
The optical lens group synoptic diagram of Fig. 3 A the utility model the 3rd embodiment;
The aberration curve figure of Fig. 3 B the utility model the 3rd embodiment;
The optical lens group synoptic diagram of Fig. 4 A the utility model the 4th embodiment;
The aberration curve figure of Fig. 4 B the utility model the 4th embodiment;
The optical lens group synoptic diagram of Fig. 5 A the utility model the 5th embodiment;
The aberration curve figure of Fig. 5 B the utility model the 5th embodiment;
The optical lens group synoptic diagram of Fig. 6 A the utility model the 6th embodiment;
The aberration curve figure of Fig. 6 B the utility model the 6th embodiment;
Fig. 7 table one is the optical data of the utility model first embodiment;
Fig. 8 table two is the aspherical surface data of the utility model first embodiment;
Fig. 9 table three is the optical data of the utility model second embodiment;
Figure 10 table four is the aspherical surface data of the utility model second embodiment;
Figure 11 table five is the optical data of the utility model the 3rd embodiment;
Figure 12 table six is the aspherical surface data of the utility model the 3rd embodiment;
Figure 13 table seven is the optical data of the utility model the 4th embodiment;
Figure 14 table eight is the aspherical surface data of the utility model the 4th embodiment;
Figure 15 table nine is the optical data of the utility model the 5th embodiment;
Figure 16 table ten is the aspherical surface data of the utility model the 5th embodiment;
Figure 17 table ten one is the optical data of the utility model the 6th embodiment;
Figure 18 table ten two is the aspherical surface data of the utility model the 6th embodiment;
Figure 19 table ten three is the numerical data of the utility model first embodiment to the six embodiment correlationship formulas;
Figure 20 is the enlarged drawing of the 4th lens 140 among the utility model first embodiment.
The main element symbol description:
Aperture 100,200,300,400,500,600
First lens 110,210,310,410,510,610
Thing side surface 111,211,311,411,511,611
Picture side surface 112,212,312,412,512,612
Second lens 120,220,320,420,520,620
Thing side surface 121,221,321,421,521,621
Picture side surface 122,222,322,422,522,622
The 3rd lens 130,230,330,430,530,630
Thing side surface 131,231,331,431,531,631
Picture side surface 132,232,332,432,532,632
The 4th lens 140,240,340,440,540,640
Thing side surface 141,241,341,441,541,641
Picture side surface 142,242,342,442,542,642
Infrared ray filtering optical filter 150,250,350,450,550,650
Cover glass 170,270,370
Imaging surface 160,260,360,460,560,660
The focal length of whole optical lens group is f
The f-number of whole optical lens group is Fno
Half of maximum visual angle is HFOV in the whole optical lens group
The thickness of first lens on optical axis is CT1
The thickness of second lens on optical axis is CT2
The thickness of the 4th lens on optical axis is CT4
The thing side surface radius-of-curvature of second lens is R3
Second lens be R4 as the side surface radius-of-curvature
The thing side surface radius-of-curvature of the 3rd lens is R5
The 3rd lens be R6 as the side surface radius-of-curvature
The thing side surface radius-of-curvature of the 4th lens is R7
The 4th lens be R8 as the side surface radius-of-curvature
The focal length of first lens is f1
The focal length of second lens is f2
The focal length of the 4th lens is f4
The maximum magnitude position of passing through as the side surface glazed thread of the 4th lens and the vertical range of optical axis are Y42
The 4th lens as being that the position of Y42 is SAG42 with the distance that is tangential on the tangent plane on the lens axis summit apart from optical axis on the side surface
Aperture is Sd to the 4th lens as the distance of side surface on optical axis
The thing side surface of first lens is Td to the 4th lens as the distance of side surface on optical axis
The thing side surface of first lens to the distance of imaging surface on optical axis is TTL
Half of sense electronics optical element effective pixel area diagonal angle line length is ImgH
Embodiment
The utility model provides a kind of optical lens group, is extremely comprised in regular turn as side by the thing side: first lens of the positive refracting power of a tool; Second lens of the positive refracting power of one tool; The 3rd lens of the negative refracting power of one tool, its thing side surface are concave surface and are convex surface as side surface, this thing side with as having at least one side to be aspheric surface in the side surface; And the 4th lens of the positive refracting power of a tool, this thing side and be all aspheric surface as side surface; Wherein, the lens of tool refracting power are four in this optical lens group; Wherein, 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 the 4th lens is R7, the 4th lens be R8 as the side surface radius-of-curvature, the thickness of the 4th lens on optical axis is CT4, and the focal length of whole optical lens group is f, is to satisfy the following relationship formula:
0.0＜CT1/CT2＜0.6；
| R7/R8|＜1.0; And
0.25＜CT4/f＜0.85。
When aforementioned optical lens group satisfied following relationship formula: 0.0＜CT1/CT2＜0.6, the thickness of these first lens and second lens was comparatively suitable, can help the assembling and the spatial configuration of mirror group.Further, preferable system satisfies following relationship formula: 0.0＜CT1/CT2＜0.35.When aforementioned optical lens group satisfies the following relationship formula: | during R7/R8|＜1.0, the 4th lens thing side is comparatively suitable with the curvature of picture side surface, helps to strengthen the positive refracting power of first lens, can effectively shorten the optics total length.Further, preferable system satisfies the following relationship formula: | R7/R8|＜0.70.Further, preferable system satisfies the following relationship formula: | R7/R8|＜0.35.When aforementioned optical lens group satisfied following relationship formula: 0.25＜CT4/f＜0.85, the thickness of the 4th lens was comparatively suitable, can provide sufficient back focal length, so that dispose other required optical elements.Further, preferable system satisfies following relationship formula: 0.30＜CT4/f＜0.60.
In the aforementioned optical lens group of the utility model, preferably, these second lens be convex surface as side surface.When the thing side surface of these second lens is a convex surface and when being convex surface as side surface, can help to strengthen the positive refracting power of these second lens, be the refracting power that helps distributing these first lens, to reduce the susceptibility of system; When the thing side surface of these second lens is a concave surface and when being convex surface as side surface, can effectively strengthen the astigmatism of update the system, help the image quality of elevator system.。Preferably, the thing side surface of the 4th lens is a convex surface, when the thing side surface of the 4th lens is a convex surface and when being convex surface as side surface, helps to shorten the total length of this optical lens group, reduces system sensitivity; When the thing side surface of the 4th lens is a convex surface and when being concave surface as side surface, can help the astigmatism and the higher order aberratons of update the system.Preferably, the material of the 3rd lens is a plastic cement, and the material of the 4th lens is a plastic cement.
In the aforementioned optical lens group of the utility model, preferably, the thing side surface of the 4th lens be provided with at least one point of inflexion as at least one surface in the side surface.
In the aforementioned optical lens group of the utility model, more comprise an aperture, this aperture to the 4th lens are Sd as the distance of side surface on optical axis, these first lens thing side surface to the 4th lens are Td as the distance of side surface on optical axis, preferably, be to satisfy following relationship formula: 0.75＜Sd/Td＜0.94.When Sd/Td satisfies the above-mentioned relation formula, help this optical lens group and in the Wide-angle characteristic, obtain good effect.
In the aforementioned optical lens group of the utility model, the thing side surface radius-of-curvature of the 4th lens is R7, the 4th lens be R8 as the side surface radius-of-curvature, preferably, be to satisfy the following relationship formula: | R7/R8|＜0.70.
In the aforementioned optical lens group of the utility model, 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, be to satisfy the following relationship formula :-7＜(R5+R6)/(R5-R6)＜-2.When (R5+R6)/(R5-R6) satisfies the above-mentioned relation formula, help the revisal of system aberration.
In the aforementioned optical lens group of the utility model, the focal length of these second lens is f2, and the focal length of the 4th lens is f4, preferably, is to satisfy following relationship formula: 0.75＜f2/f4＜1.65.When f2/f4 satisfied the above-mentioned relation formula, the distribution of these second lens and the positive refracting power of the 4th lens was comparatively suitable, helped to reduce the susceptibility of system.
In the aforementioned optical lens group of the utility model, the focal length of whole optical lens group is f, and the focal length of these first lens is f1, preferably, is to satisfy following relationship formula: 0.0＜f/f1＜0.5.When f/f1 satisfied the above-mentioned relation formula, these first lens can provide components of system as directed positive refracting power, can help to shorten the optics total length of optical lens group.
In the aforementioned optical lens group of the utility model, these second lens be R4 as the side surface radius-of-curvature, the thing side surface radius-of-curvature of these second lens is R3, preferably, is to satisfy the following relationship formula: 0.1＜| R4/R3|＜0.7.When | when R4/R3| satisfies the above-mentioned relation formula, help shortening the optics total length of optical lens group, and simultaneously effective update the system astigmatism.
In the aforementioned optical lens group of the utility model, the thing side surface radius-of-curvature of the 4th lens is R7, the 4th lens be R8 as the side surface radius-of-curvature, preferably, be to satisfy the following relationship formula: | R7/R8|＜0.35.
In the aforementioned optical lens group of the utility model, the thickness of these first lens on optical axis is CT1, and the thickness of these second lens on optical axis is CT2, preferably, is to satisfy following relationship formula: 0.0＜CT1/CT2＜0.35.
In the aforementioned optical lens group of the utility model, 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.
In the aforementioned optical lens group of the utility model, preferably, the thing side surface of these first lens is convex surface and is concave surface as side surface.When the thing side surface of these first lens is a convex surface and when being concave surface as side surface, comparatively favourable for the astigmatism (Astigmatism) of update the system.The thickness of the 4th lens on optical axis is CT4, and the focal length of whole optical lens group is f, preferably, is to satisfy following relationship formula: 0.30＜CT4/f＜0.60.When CT4/f satisfied the above-mentioned relation formula, the thickness of the 4th lens was comparatively suitable, can provide sufficient back focal length, so that dispose other required optical elements.
In the aforementioned optical lens group of the utility model, 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, be to satisfy the following relationship formula :-4.0＜(R5+R6)/(R5-R6)＜-2.0.When (R5+R6)/(R5-R6) satisfies the above-mentioned relation formula, help the revisal of system aberration.
In the aforementioned optical lens group of the utility model, the maximum magnitude position of passing through as the side surface glazed thread of the 4th lens and the vertical range of optical axis are Y42, the 4th lens as being that the position of Y42 is SAG42 with the distance that is tangential on the tangent plane on the lens axis summit apart from optical axis on the side surface, the thickness of the 4th lens on optical axis is CT4, preferably, be to satisfy following relationship formula :-0.45＜SAG42/CT4＜0.3.When SAG42/CT4 satisfies the above-mentioned relation formula, can make the too bending of shape of the 4th lens, except that making that helps lens and moulding, more help to reduce the required space of eyeglass assembled configuration in the mirror group, make that the configuration of mirror group can be more tight.
In the aforementioned optical lens group of the utility model, the thing side surface of these first lens to the distance of imaging surface on optical axis is TTL, wherein this optical lens group is provided with a sense electronics optical element in addition in imaging surface, half of this sense electronics optical element effective pixel area diagonal angle line length is ImgH, preferably, be to satisfy following relationship formula: TTL/ImgH＜3.5.When TTL/ImgH satisfies the above-mentioned relation formula, help keeping the miniaturization of this optical lens group, to be equipped on the frivolous electronic product.
On the other hand, the utility model provides a kind of optical lens group, is extremely comprised in regular turn as side by the thing side: first lens of the positive refracting power of a tool; Second lens of the positive refracting power of one tool, it is a convex surface as side surface; The 3rd lens of the negative refracting power of one tool, its thing side surface are concave surface and are convex surface as side surface, the thing side surface of the 3rd lens be aspheric surface as at least one surface in the side surface; And the 4th lens of the positive refracting power of a tool, its thing side surface is a convex surface, the thing side surface of the 4th lens be all aspheric surface as side surface; Wherein, the thickness of these first lens on optical axis is CT1, the thickness of these second lens on optical axis is CT2, the thickness of the 4th lens on optical axis is CT4, and the focal length of whole optical lens group is f, wherein, this optical lens group is provided with an aperture in addition, this aperture to the 4th lens are Sd as the distance of side surface on optical axis, and these first lens thing side surface to the 4th lens are Td as the distance of side surface on optical axis, are to satisfy the following relationship formula:
0.0＜CT1/CT2＜0.6；
0.25＜CT4/f＜0.85; And
0.75＜Sd/Td＜0.94。
When aforementioned optical lens group satisfied following relationship formula: 0.0＜CT1/CT2＜0.6, the thickness of these first lens and second lens was comparatively suitable, can help the assembling and the spatial configuration of mirror group.Further, preferable system satisfies following relationship formula: 0.0＜CT1/CT2＜0.35.
When aforementioned optical lens group satisfied following relationship formula: 0.25＜CT4/f＜0.85, the thickness of the 4th lens was comparatively suitable, can provide sufficient back focal length, so that dispose other required optical elements.
When aforementioned optical lens group satisfies following relationship formula: 0.75＜Sd/Td＜0.94, help this optical lens group and in the Wide-angle characteristic, obtain good effect.
When aforementioned optical lens group in the thing side surface of the 3rd lens and the 4th lens with as side surface at least one surface when being provided with at least one point of inflexion, be incident in angle on the photo-sensitive cell with more suppressing light effectively from the axle visual field, and the further aberration of modified off-axis visual field.
In the aforementioned optical lens group of the utility model, this first lens thing side surface is convex surface and is concave surface as side surface that the focal length of whole optical lens group is f, and the focal length of these first lens is f1, preferably, is to satisfy following relationship formula: 0.0＜f/f1＜0.5.When f/f1 satisfied the above-mentioned relation formula, these first lens can provide components of system as directed positive refracting power, can help to shorten the optics total length of optical lens group.
In the aforementioned optical lens group of the utility model, preferably, the 3rd lens material is a plastic cement, and the 4th lens material is a plastic cement, and the 4th lens be provided with at least one point of inflexion as at least one surface in side surface and the thing side surface.Be incident in angle on the photo-sensitive cell with more suppressing light effectively from the axle visual field, and the further aberration of modified off-axis visual field.
In the aforementioned optical lens group of the utility model, the thing side surface radius-of-curvature of the 4th lens is R7, the 4th lens be R8 as the side surface radius-of-curvature, preferably, be to satisfy the following relationship formula: | R7/R8|＜0.70.When | when R7/R8| satisfied the above-mentioned relation formula, the 4th lens thing side was comparatively suitable with the curvature of picture side surface, helped to strengthen the positive refracting power of first lens, can effectively shorten the optics total length.
In the aforementioned optical lens group of the utility model, the maximum magnitude position of passing through as the side surface glazed thread of the 4th lens and the vertical range of optical axis are Y42, the 4th lens as being that the position of Y42 is SAG42 with the distance that is tangential on the tangent plane on the lens axis summit apart from optical axis on the side surface, the thickness of the 4th lens on optical axis is CT4, preferably, be to satisfy following relationship formula :-0.45＜SAG42/CT4＜0.3.When SAG42/CT4 satisfies the above-mentioned relation formula, can make the too bending of shape of the 4th lens, except that making that helps lens and moulding, more help to reduce the required space of eyeglass assembled configuration in the mirror group, make that the configuration of mirror group can be more tight.
In the utility model optical lens group, 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 the utility model optical lens group,, 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.
In the utility model optical lens group, the maximum magnitude position of passing through as the side surface glazed thread of the 4th lens and the vertical range of optical axis are Y42, the 4th lens as being that the position of Y42 is SAG42 with the distance that is tangential on the tangent plane on the lens axis summit apart from optical axis on the side surface.Please refer to Figure 20, further describe the distance and the relative position of Y42 and SAG42 representative.Figure 20 is the enlarged drawing of the 4th lens 140 among the utility model first embodiment (will in following description).The maximum magnitude position of passing through as side surface 142 glazed threads of the 4th lens 140 and the vertical range of optical axis are Y42, the 3rd lens 140 as being that the position 2001 of Y42 is SAG42 with the distance that is tangential on the lens axis summit 2002 tangent plane apart from optical axis on the side surface 142.
The utility model optical lens group will cooperate appended graphic detailed description the in detail by following specific embodiment.
" first embodiment "
The utility model first embodiment sees also Figure 1A, and the aberration curve of first embodiment sees also Figure 1B.The optical lens group of first embodiment mainly is made of four pieces of lens, is extremely comprised in regular turn as side by the thing side:
First lens 110 of the positive refracting power of one tool, its thing side surface 111 are that convex surface and picture side surface 112 are concave surface, and its material is a plastic cement, the thing side surface 111 of these first lens 110 and be all aspheric surface as side surface 112;
Second lens 120 of the positive refracting power of one tool, its thing side surface 121 is a convex surface 122 for concave surface and as side surface, its material is a plastic cement, the thing side surface 121 of these second lens 120 and be all aspheric surface as side surface 122;
The 3rd lens 130 of the negative refracting power of one tool, its thing side surface 131 be that concave surface and picture side surface 132 are convex surface, and its material is a plastic cement, the thing side surface 131 of the 3rd lens 130 and be all aspheric surface as side surface 132; And
The 4th lens 140 of the positive refracting power of one tool, its thing side surface 141 are that convex surface and picture side surface 142 are concave surface, and its material is a plastic cement, the thing side surface 141 of the 4th lens 140 and be all aspheric surface as side surface 142;
Wherein, this optical lens group is provided with an aperture 100 in addition and places between these first lens 110 and this second lens 120, and a sense electronics optical element is set in an imaging surface 160 places, for the object imaging;
This optical lens group more includes an infrared ray filtering optical filter (1R-filter) 150 and a cover glass 170 places between the picture side surface 142 and this imaging surface 160 of the 4th lens 140; The material of this infrared ray filtering optical filter 150 is that glass and its do not influence the focal length of the utility model optical lens group.
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 optical lens group, the focal length of whole optical lens group is f, and its relational expression is: f=6.04 (millimeter).
In the first embodiment optical lens group, the f-number of whole optical lens group (f-number) is Fno, and its relational expression is: Fno=2.55.
In the first embodiment optical lens group, half of maximum visual angle is HFOV in the whole optical lens group, and its relational expression is: HFOV=34.9 (degree).
In the first embodiment optical lens group, the thickness of these first lens 110 on optical axis is CT1, and the thickness of these second lens 120 on optical axis is CT2, and its relational expression is: CT1/CT2=0.27.
In the first embodiment optical lens group, the thickness of the 4th lens (140) on optical axis is CT4, and the focal length of whole optical lens group is f, and its relational expression is: CT4/f=0.50.
In the first embodiment optical lens group, these second lens 120 be R4 as side surface 122 radius-of-curvature, thing side surface 121 radius-of-curvature of these second lens 120 are R3, its relational expression is: | R4/R3|=0.69.
In the first embodiment optical lens group, thing side surface 141 radius-of-curvature of the 4th lens 140 are R7, the 4th lens 140 be R8 as side surface 142 radius-of-curvature, its relational expression is: | R7/R8|=0.15.
In the first embodiment optical lens group, thing side surface 131 radius-of-curvature of the 3rd lens 130 are R5, the 3rd lens 130 be R6 as side surface 132 radius-of-curvature, its relational expression is: (R5+R6)/(R5-R6)=-4.97.
In the first embodiment optical lens group, the focal length of whole optical lens group is f, and the focal length of these first lens 110 is f1, and its relational expression is: f/f1=0.30.
In the first embodiment optical lens group, the focal length of these second lens 120 is f2, and the focal length of the 4th lens 140 is f4, and its relational expression is: f2/f4=0.99.
In the first embodiment optical lens group, the maximum magnitude position of passing through as side surface 142 glazed threads of the 4th lens 140 and the vertical range of optical axis are Y42, the 4th lens 140 as being that the position of Y42 is SAG42 with the distance that is tangential on the tangent plane on the lens axis summit apart from optical axis on the side surface 142, its relational expression is: SAG42/CT4=-0.22.
In the first embodiment optical lens group, these aperture 100 to the 4th lens 140 be Sd as the distance of side surface 142 on optical axis, thing side surface 111 to the 4th lens 140 of these first lens 110 are Td as the distance of side surface 142 on optical axis, and its relational expression is: Sd/Td=0.90.
In the first embodiment optical lens group, the thing side surface 111 of these first lens 110 to the distance of this imaging surface 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=3.42.
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 a millimeter (mm), and HFOV is defined as half of maximum visual angle.
" second embodiment "
The utility model second embodiment sees also Fig. 2 A, and the aberration curve of second embodiment sees also Fig. 2 B.The optical lens group of second embodiment mainly is made of four pieces of lens, is extremely comprised in regular turn as side by the thing side:
First lens 210 of the positive refracting power of one tool, its thing side surface 211 are that convex surface and picture side surface 212 are concave surface, and its material is a plastic cement, the thing side surface 211 of these first lens 210 and be all aspheric surface as side surface 212;
Second lens 220 of the positive refracting power of one tool, its thing side surface 221 is a convex surface 222 for convex surface and as side surface, its material is a plastic cement, the thing side surface 221 of these second lens 220 and be all aspheric surface as side surface 222;
The 3rd lens 230 of the negative refracting power of one tool, its thing side surface 231 be that concave surface and picture side surface 232 are convex surface, and its material is a plastic cement, the thing side surface 231 of the 3rd lens 230 and be all aspheric surface as side surface 232; And
The 4th lens 240 of the positive refracting power of one tool, its thing side surface 241 are that convex surface and picture side surface 242 are convex surface, and its material is a plastic cement, the thing side surface 241 of the 4th lens 240 and be all aspheric surface as side surface 242;
Wherein, this optical lens group is provided with an aperture 200 in addition and places between these first lens 210 and this second lens 220, and a sense electronics optical element is set in an imaging surface 260 places, for the object imaging;
This optical lens group more includes an infrared ray filtering optical filter (IR-filter) 250 and a cover glass 270 places between the picture side surface 242 and this imaging surface 260 of the 4th lens 240; The material of this infrared ray filtering optical filter 250 is that glass and its do not influence the focal length of the utility model optical lens group.
The equational expression of the second embodiment aspheric curve is as the form of first embodiment.
In the second embodiment optical lens group, the focal length of whole optical lens group is f, and its relational expression is: f=5.88 (millimeter).
In the second embodiment optical lens group, the f-number of whole optical lens group (f-number) is Fno, and its relational expression is: Fno=2.80.
In the second embodiment optical lens group, half of maximum visual angle is HFOV in the whole optical lens group, and its relational expression is: HFOV=31.0 (degree).
In the second embodiment optical lens group, the thickness of these first lens 210 on optical axis is CT1, and the thickness of these second lens 220 on optical axis is CT2, and its relational expression is: CT1/CT2=0.26.
In the second embodiment optical lens group, the thickness of the 4th lens 240 on optical axis is CT4, and the focal length of whole optical lens group is f, and its relational expression is: CT4/f=0.47.
In the second embodiment optical lens group, these second lens 220 be R4 as side surface 222 radius-of-curvature, thing side surface 221 radius-of-curvature of these second lens 220 are R3, its relational expression is: | R4/R3|=0.36.
In the second embodiment optical lens group, thing side surface 241 radius-of-curvature of the 4th lens 240 are R7, the 4th lens 240 be R8 as side surface 242 radius-of-curvature, its relational expression is: | R7/R8|=0.04.
In the second embodiment optical lens group, thing side surface 231 radius-of-curvature of the 3rd lens 230 are R5, the 3rd lens 230 be R6 as side surface 232 radius-of-curvature, its relational expression is: (R5+R6)/(R5-R6)=-2.17.
In the second embodiment optical lens group, the focal length of whole optical lens group is f, and the focal length of these first lens 210 is f1, and its relational expression is: f/f1=0.26.
In the second embodiment optical lens group, the focal length of these second lens 220 is f2, and the focal length of the 4th lens 240 is f4, and its relational expression is: f2/f4=0.80.
In the second embodiment optical lens group, the maximum magnitude position of passing through as side surface 242 glazed threads of the 4th lens 240 and the vertical range of optical axis are Y42, the 4th lens 240 as being that the position of Y42 is SAG42 with the distance that is tangential on the tangent plane on the lens axis summit apart from optical axis on the side surface 242, its relational expression is: SAG42/CT4=-0.36.
In the second embodiment optical lens group, these aperture 200 to the 4th lens 240 be Sd as the distance of side surface 242 on optical axis, thing side surface 211 to the 4th lens 240 of these first lens 210 are Td as the distance of side surface 242 on optical axis, and its relational expression is: Sd/Td=0.93.
In the second embodiment optical lens group, the thing side surface 211 of these first lens 210 to the distance of imaging surface 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=2.94.
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 a millimeter (mm), and HFOV is defined as half of maximum visual angle.
" the 3rd embodiment "
The utility model the 3rd embodiment sees also Fig. 3 A, and the aberration curve of the 3rd embodiment sees also Fig. 3 B.The optical lens group of the 3rd embodiment mainly is made of four pieces of lens, is extremely comprised in regular turn as side by the thing side:
The 3rd lens 230 of the negative refracting power of one tool, its thing side surface 331 be that concave surface and picture side surface 332 are convex surface, and its material is a plastic cement, the thing side surface 331 of the 3rd lens 330 and be all aspheric surface as side surface 332; And
The 4th lens 340 of the positive refracting power of one tool, its thing side surface 341 are that convex surface and picture side surface 342 are concave surface, and its material is a plastic cement, the thing side surface 341 of the 4th lens 340 and be all aspheric surface as side surface 342;
Wherein, this optical lens group is provided with an aperture 300 in addition and places between object and this first lens 310, and a sense electronics optical element is set in an imaging surface 360 places, for the object imaging;
This optical lens group more includes an infrared ray filtering optical filter (IR-filter) 350 and a cover glass 370 places between the picture side surface 342 and this imaging surface 360 of the 4th lens 340; The material of this infrared ray filtering optical filter 350 is that glass and its do not influence the focal length of the utility model optical lens group.
The equational expression of the 3rd embodiment aspheric curve is as the form of first embodiment.
In the 3rd embodiment optical lens group, the focal length of whole optical lens group is f, and its relational expression is: f=5.99 (millimeter).
In the 3rd embodiment optical lens group, the f-number of whole optical lens group (f-number) is Fno, and its relational expression is: Fno=2.80.
In the 3rd embodiment optical lens group, half of maximum visual angle is HFOV in the whole optical lens group, and its relational expression is: HFOV=31.0 (degree).
In the 3rd embodiment optical lens group, the thickness of these first lens 310 on optical axis is CT1, and the thickness of these second lens 320 on optical axis is CT2, and its relational expression is: CT1/CT2=0.27.
In the 3rd embodiment optical lens group, the thickness of the 4th lens 340 on optical axis is CT4, and the focal length of whole optical lens group is f, and its relational expression is: CT4/f=0.33.
In the 3rd embodiment optical lens group, these second lens 320 be R4 as side surface 322 radius-of-curvature, thing side surface 321 radius-of-curvature of these second lens 320 are R3, its relational expression is: | R4/R3|=0.12.
In the 3rd embodiment optical lens group, thing side surface 341 radius-of-curvature of the 4th lens 340 are R7, the 4th lens 340 be R8 as side surface 342 radius-of-curvature, its relational expression is: | R7/R8|=0.86.
In the 3rd embodiment optical lens group, thing side surface 331 radius-of-curvature of the 3rd lens 330 are R5, the 3rd lens 330 be R6 as side surface 332 radius-of-curvature, its relational expression is: (R5+R6)/(R5-R6)=-2.37.
In the 3rd embodiment optical lens group, the focal length of whole optical lens group is f, and the focal length of these first lens 310 is f1, and its relational expression is: f/f1=0.78.
In the 3rd embodiment optical lens group, the focal length of these second lens 320 is f2, and the focal length of the 4th lens 340 is f4, and its relational expression is: f2/f4=0.08.
In the 3rd embodiment optical lens group, the maximum magnitude position of passing through as side surface 342 glazed threads of the 4th lens 340 and the vertical range of optical axis are Y42, the 4th lens 340 as being that the position of Y42 is SAG42 with the distance that is tangential on the tangent plane on the lens axis summit apart from optical axis on the side surface 342, its relational expression is: SAG42/CT4=-0.36.
In the 3rd embodiment optical lens group, these aperture 300 to the 4th lens 340 be Sd as the distance of side surface 342 on optical axis, thing side surface 311 to the 4th lens 340 of these first lens 310 are Td as the distance of side surface 342 on optical axis, and its relational expression is: Sd/Td=1.01.
In the 3rd embodiment optical lens group, the thing side surface 311 of these first lens 310 to the distance of imaging surface 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=2.94.
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 a millimeter (mm), and HFOV is defined as half of maximum visual angle.
" the 4th embodiment "
The utility model the 4th embodiment sees also Fig. 4 A, and the aberration curve of the 4th embodiment sees also Fig. 4 B.The optical lens group of the 4th embodiment mainly is made of four pieces of lens, is extremely comprised in regular turn as side by the thing side:
The 3rd lens 430 of the negative refracting power of one tool, its thing side surface 431 be that concave surface and picture side surface 432 are convex surface, and its material is a plastic cement, the thing side surface 431 of the 3rd lens 430 and be all aspheric surface as side surface 432; And
The 4th lens 440 of the positive refracting power of one tool, its thing side surface 441 are that convex surface and picture side surface 442 are convex surface, and its material is a plastic cement, the thing side surface 441 of the 4th lens 440 and be all aspheric surface as side surface 442;
Wherein, this optical lens group is provided with an aperture 400 in addition and places between these first lens 410 and this second lens 420, and a sense electronics optical element is set in an imaging surface 460 places, for the object imaging;
This optical lens group more includes an infrared ray filtering optical filter (IR-filter) 450 and places looking like between side surface 442 and this imaging surface 460 of the 4th lens 440; The material of this infrared ray filtering optical filter 450 is that glass and its do not influence the focal length of the utility model optical lens group.
The equational expression of the 4th embodiment aspheric curve is as the form of first embodiment.
In the 4th embodiment optical lens group, the focal length of whole optical lens group is f, and its relational expression is: f=6.00 (millimeter).
In the 4th embodiment optical lens group, the f-number of whole optical lens group (f-number) is Fno, and its relational expression is: Fno=2.45.
In the 4th embodiment optical lens group, half of maximum visual angle is HFOV in the whole optical lens group, and its relational expression is: HFOV=35.7 (degree).
In the 4th embodiment optical lens group, the thickness of these first lens 410 on optical axis is CT1, and the thickness of these second lens 420 on optical axis is CT2, and its relational expression is: CT1/CT2=0.32.
In the 4th embodiment optical lens group, the thickness of the 4th lens 440 on optical axis is CT4, and the focal length of whole optical lens group is f, and its relational expression is: CT4/f=0.50.
In the 4th embodiment optical lens group, these second lens 420 be R4 as side surface 422 radius-of-curvature, thing side surface 421 radius-of-curvature of these second lens 420 are R3, its relational expression is: | R4/R3|=0.48.
In the 4th embodiment optical lens group, thing side surface 441 radius-of-curvature of the 4th lens 440 are R7, the 4th lens 440 be R8 as side surface 442 radius-of-curvature, its relational expression is: | R7/R8|=0.03.
In the 4th embodiment optical lens group, thing side surface 431 radius-of-curvature of the 3rd lens 430 are R5, the 3rd lens 430 be R6 as side surface 432 radius-of-curvature, its relational expression is: (R5+R6)/(R5-R6)=-3.24.
In the 4th embodiment optical lens group, the focal length of whole optical lens group is f, and the focal length of these first lens 410 is f1, and its relational expression is: f/f1=0.18.
In the 4th embodiment optical lens group, the focal length of these second lens 420 is f2, and the focal length of the 4th lens 440 is f4, and its relational expression is: f2/f4=1.30.
In the 4th embodiment optical lens group, the maximum magnitude position of passing through as side surface 442 glazed threads of the 4th lens 440 and the vertical range of optical axis are Y42, the 4th lens 440 as being that the position of Y42 is SAG42 with the distance that is tangential on the tangent plane on the lens axis summit apart from optical axis on the side surface 442, its relational expression is: SAG42/CT4=-0.24.
In the 4th embodiment optical lens group, these aperture 400 to the 4th lens 440 be Sd as the distance of side surface 442 on optical axis, thing side surface 411 to the 4th lens 440 of these first lens 410 are Td as the distance of side surface 442 on optical axis, and its relational expression is: Sd/Td=0.88.
In the 4th embodiment optical lens group, the thing side surface 411 of these first lens 410 to the distance of imaging surface 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=3.41.
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 a millimeter (mm), and HFOV is defined as half of maximum visual angle.
" the 5th embodiment "
The utility model the 5th embodiment sees also Fig. 5 A, and the aberration curve of the 5th embodiment sees also Fig. 5 B.The optical lens group of the 5th embodiment mainly is made of four pieces of lens, is extremely comprised in regular turn as side by the thing side:
First lens 510 of the positive refracting power of one tool, its thing side surface 511 are that convex surface and picture side surface 512 are concave surface, and its material is a plastic cement, the thing side surface 511 of these first lens 510 and be all aspheric surface as side surface 512;
Second lens 520 of the positive refracting power of one tool, its thing side surface 521 are that convex surface and picture side surface 522 are convex surface, and its material is a plastic cement, the thing side surface 521 of these second lens 520 and be all aspheric surface as side surface 522;
The 3rd lens 530 of the negative refracting power of one tool, its thing side surface 531 be that concave surface and picture side surface 532 are convex surface, and its material is a plastic cement, the thing side surface 531 of the 3rd lens 530 and be all aspheric surface as side surface 532; And
The 4th lens 540 of the positive refracting power of one tool, its thing side surface 541 are that convex surface and picture side surface 542 are concave surface, and its material is a plastic cement, the thing side surface 541 of the 4th lens 540 and be all aspheric surface as side surface 542;
Wherein, this optical lens group is provided with an aperture 500 in addition and places between these first lens 510 and this second lens 520, and a sense electronics optical element is set in an imaging surface 560 places, for the object imaging;
This optical lens group more includes an infrared ray filtering optical filter (IR-filter) 550 and places looking like between side surface 542 and this imaging surface 560 of the 4th lens 540; The material of this infrared ray filtering optical filter 550 is that glass and its do not influence the focal length of the utility model optical lens group.
The equational expression of the 5th embodiment aspheric curve is as the form of first embodiment.
In the 5th embodiment optical lens group, the focal length of whole optical lens group is f, and its relational expression is: f=6.12 (millimeter).
In the 5th embodiment optical lens group, the f-number of whole optical lens group (f-number) is Fno, and its relational expression is: Fno=2.60.
In the 5th embodiment optical lens group, half of maximum visual angle is HFOV in the whole optical lens group, and its relational expression is: HFOV=34.3 (degree).
In the 5th embodiment optical lens group, the thickness of these first lens 510 on optical axis is CT1, and the thickness of these second lens 520 on optical axis is CT2, and its relational expression is: CT1/CT2=0.31.
In the 5th embodiment optical lens group, the thickness of the 4th lens 540 on optical axis is CT4, and the focal length of whole optical lens group is f, and its relational expression is: CT4/f=0.49.
In the 5th embodiment optical lens group, these second lens 520 be R4 as side surface 522 radius-of-curvature, thing side surface 521 radius-of-curvature of these second lens 520 are R3, its relational expression is: | R4/R3|=0.46.
In the 5th embodiment optical lens group, thing side surface 541 radius-of-curvature of the 4th lens 540 are R7, the 4th lens 540 be R8 as side surface 542 radius-of-curvature, its relational expression is: | R7/R8|=0.68.
In the 5th embodiment optical lens group, thing side surface 531 radius-of-curvature of the 3rd lens 530 are R5, the 3rd lens 530 be R6 as side surface 532 radius-of-curvature, its relational expression is: (R5+R6)/(R5-R6)=-6.37.
In the 5th embodiment optical lens group, the focal length of whole optical lens group is f, and the focal length of these first lens 510 is f1, and its relational expression is: f/f1=0.01.
In the 5th embodiment optical lens group, the focal length of these second lens 520 is f2, and the focal length of the 4th lens 540 is f4, and its relational expression is: f2/f4=1.10.
In the 5th embodiment optical lens group, the maximum magnitude position of passing through as side surface 542 glazed threads of the 4th lens 540 and the vertical range of optical axis are Y42, the 4th lens 540 as being that the position of Y42 is SAG42 with the distance that is tangential on the tangent plane on the lens axis summit apart from optical axis on the side surface 542, its relational expression is: SAG42/CT4=0.28.
In the 5th embodiment optical lens group, these aperture 500 to the 4th lens 540 be Sd as the distance of side surface 542 on optical axis, thing side surface 511 to the 4th lens 540 of these first lens 510 are Td as the distance of side surface 542 on optical axis, and its relational expression is: Sd/Td=0.87.
In the 5th embodiment optical lens group, the thing side surface 511 of these first lens 510 to the distance of imaging surface 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=3.38.
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 a millimeter (mm), and HFOV is defined as half of maximum visual angle.
" the 6th embodiment "
The utility model the 6th embodiment sees also Fig. 6 A, and the aberration curve of the 6th embodiment sees also Fig. 6 B.The optical lens group of the 6th embodiment mainly is made of four pieces of lens, is extremely comprised in regular turn as side by the thing side:
The 3rd lens 630 of the negative refracting power of one tool, its thing side surface 631 be that concave surface and picture side surface 632 are convex surface, and its material is a plastic cement, the thing side surface 631 of the 3rd lens 630 and be all aspheric surface as side surface 632; And
The 4th lens 640 of the positive refracting power of one tool, its thing side surface 641 are that convex surface and picture side surface 642 are convex surface, and its material is a plastic cement, the thing side surface 641 of the 4th lens 640 and be all aspheric surface as side surface 642;
Wherein, this optical lens group is provided with an aperture 600 in addition and places between these first lens 610 and this second lens 620, and a sense electronics optical element is set in an imaging surface 660 places, for the object imaging;
This optical lens group more includes an infrared ray filtering optical filter (IR-filter) 650 and places looking like between side surface 642 and this imaging surface 660 of the 4th lens 640; The material of this infrared ray filtering optical filter 650 is that glass and its do not influence the focal length of the utility model optical lens group.
The equational expression of the 6th embodiment aspheric curve is as the form of first embodiment.
In the 6th embodiment optical lens group, the focal length of whole optical lens group is f, and its relational expression is: f=6.06 (millimeter).
In the 6th embodiment optical lens group, the f-number of whole optical lens group (f-number) is Fno, and its relational expression is: Fno=2.45.
In the 6th embodiment optical lens group, half of maximum visual angle is HFOV in the whole optical lens group, and its relational expression is: HFOV=35.2 (degree).
In the 6th embodiment optical lens group, the thickness of these first lens 610 on optical axis is CT1, and the thickness of these second lens 620 on optical axis is CT2, and its relational expression is: CT1/CT2=0.29.
In the 6th embodiment optical lens group, the thickness of the 4th lens 640 on optical axis is CT4, and the focal length of whole optical lens group is f, and its relational expression is: CT4/f=0.50.
In the 6th embodiment optical lens group, these second lens 620 be R4 as side surface 622 radius-of-curvature, thing side surface 621 radius-of-curvature of these second lens 620 are R3, its relational expression is: | R4/R3|=0.72.
In the 6th embodiment optical lens group, thing side surface 641 radius-of-curvature of the 4th lens 640 are R7, the 4th lens 640 be R8 as side surface 642 radius-of-curvature, its relational expression is: | R7/R8|=0.03.
In the 6th embodiment optical lens group, thing side surface 631 radius-of-curvature of the 3rd lens 630 are R5, the 3rd lens 630 be R6 as side surface 632 radius-of-curvature, its relational expression is: (R5+R6)/(R5-R6)=-341.
In the 6th embodiment optical lens group, the focal length of whole optical lens group is f, and the focal length of these first lens 610 is f1, and its relational expression is: f/f1=0.33.
In the 6th embodiment optical lens group, the focal length of these second lens 620 is f2, and the focal length of the 4th lens 640 is f4, and its relational expression is: f2/f4=1.56.
In the 6th embodiment optical lens group, the maximum magnitude position of passing through as side surface 642 glazed threads of the 4th lens 640 and the vertical range of optical axis are Y42, the 4th lens 640 as being that the position of Y42 is SAG42 with the distance that is tangential on the tangent plane on the lens axis summit apart from optical axis on the side surface 642, its relational expression is: SAG42/CT4=-0.19.
In the 6th embodiment optical lens group, these aperture 600 to the 4th lens 640 be Sd as the distance of side surface 642 on optical axis, thing side surface 611 to the 4th lens 640 of these first lens 610 are Td as the distance of side surface 642 on optical axis, and its relational expression is: Sd/Td=0.90.
In the 6th embodiment optical lens group, the thing side surface 611 of these first lens 610 to the distance of imaging surface 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=3.32.
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 a millimeter (mm), and HFOV is defined as half of maximum visual angle.
Table one is depicted as the different numerical value change tables of the utility model optical lens group embodiment to table ten two (corresponding diagram 7 is to Figure 18 respectively); the all true gained of testing of numerical value change of right each embodiment of the utility model; even use different numerical value; the product of same structure must belong to protection category of the present utility model; so above explanation is described and graphic only as exemplary, non-in order to limit claim of the present utility model.Table ten three (corresponding Figure 19) is the numerical data of the corresponding the utility model correlationship of each embodiment formula.
Claims (23)
1. an optical lens group is characterized in that, described optical lens group is extremely comprised as side in regular turn by the thing side:
First lens of the positive refracting power of one tool;
Second lens of the positive refracting power of one tool;
The 3rd lens of the negative refracting power of one tool, its thing side surface are concave surface and are convex surface as side surface, described thing side with as having at least one side to be aspheric surface in the side surface; And
The 4th lens of the positive refracting power of one tool, described thing side and be all aspheric surface as side surface;
Wherein, the lens of tool refracting power are four in the described optical lens group;
Wherein, the thickness of described first lens on optical axis is CT1, the thickness of described second lens on optical axis is CT2, the thing side surface radius-of-curvature of described the 4th lens is R7, described the 4th lens be R8 as the side surface radius-of-curvature, the thickness of described the 4th lens on optical axis is CT4, and the focal length of whole optical lens group is f, satisfies the following relationship formula:
0.0＜CT1/CT2＜0.6；
| R7/R8|＜1.0; And
0.25＜CT4/f＜0.85。
2. optical lens group as claimed in claim 1 is characterized in that, described second lens be convex surface as side surface, the thing side surface of described the 4th lens is a convex surface, the material of described the 3rd lens is a plastic cement, the material of described the 4th lens is a plastic cement.
3. optical lens group as claimed in claim 2 is characterized in that, the thing side surface of described the 4th lens be provided with at least one point of inflexion as at least one surface in the side surface.
4. optical lens group as claimed in claim 3, it is characterized in that, described optical lens group more comprises an aperture, wherein aperture to described the 4th lens are Sd as the distance of side surface on optical axis, the described first lens thing side surface to described the 4th lens are Td as the distance of side surface on optical axis, satisfy the following relationship formula:
0.75＜Sd/Td＜0.94。
5. optical lens group as claimed in claim 3 is characterized in that, the thing side surface radius-of-curvature of described the 4th lens is R7, described the 4th lens be R8 as the side surface radius-of-curvature, satisfy the following relationship formula:
|R7/R8|＜0.70。
6. optical lens group as claimed in claim 4 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:
-7＜(R5+R6)/(R5-R6)＜-2。
7. optical lens group as claimed in claim 4 is characterized in that, the focal length of described second lens is f2, and the focal length of described the 4th lens is f4, satisfies the following relationship formula:
0.75＜f2/f4＜1.65。
8. optical lens group as claimed in claim 4 is characterized in that, the focal length of whole optical lens group is f, and the focal length of described first lens is f1, satisfies the following relationship formula:
0.0＜f/f1＜0.5。
9. optical lens group as claimed in claim 5 is characterized in that, the focal length of whole optical lens group is f, and the focal length of described first lens is f1, satisfies the following relationship formula:
0.0＜f/f1＜0.5。
10. optical lens group as claimed in claim 5 is characterized in that, described second lens be R4 as the side surface radius-of-curvature, the thing side surface radius-of-curvature of described second lens is R3, satisfies the following relationship formula:
0.1＜|R4/R3|＜0.7。
11. optical lens group as claimed in claim 5 is characterized in that, the thing side surface radius-of-curvature of described the 4th lens is R7, described the 4th lens be R8 as the side surface radius-of-curvature, satisfy the following relationship formula:
|R7/R8|＜0.35。
12. optical lens group as claimed in claim 5 is characterized in that, the thickness of described first lens on optical axis is CT1, and the thickness of described second lens on optical axis is CT2, satisfies the following relationship formula:
0.0＜CT1/CT2＜0.35。
13. optical lens group as claimed in claim 3 is characterized in that, 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.
14. optical lens group as claimed in claim 3, it is characterized in that the thing side surface of described first lens is convex surface and is concave surface as side surface that the thickness of described the 4th lens on optical axis is CT4, the focal length of whole optical lens group is f, satisfies the following relationship formula:
0.30＜CT4/f＜0.60。
15. optical lens group as claimed in claim 14 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:
-4.0＜(R5+R6)/(R5-R6)＜-2.0。
16. optical lens group as claimed in claim 14, it is characterized in that, the maximum magnitude position of passing through as the side surface glazed thread of described the 4th lens and the vertical range of optical axis are Y42, described the 4th lens as being that the position of Y42 is SAG42 with the distance that is tangential on the tangent plane on the lens axis summit apart from optical axis on the side surface, the thickness of described the 4th lens on optical axis is CT4, satisfies the following relationship formula:
-0.45＜SAG42/CT4＜0.3。
17. optical lens group as claimed in claim 1, it is characterized in that, described optical lens group comprises a sense electronics optical element in addition in imaging surface, the thing side surface of described first lens to the distance of described imaging surface on optical axis is TTL, half of described sense electronics optical element effective pixel area diagonal angle line length is ImgH, satisfies the following relationship formula:
TTL/ImgH＜3.5。
18. an optical lens group is characterized in that, described optical lens group is extremely comprised as side in regular turn by the thing side:
First lens of the positive refracting power of one tool;
Second lens of the positive refracting power of one tool, it is a convex surface as side surface;
The 3rd lens of the negative refracting power of one tool, its thing side surface are concave surface and are convex surface as side surface, the thing side surface of described the 3rd lens be aspheric surface as at least one surface in the side surface; And
The 4th lens of the positive refracting power of one tool, its thing side surface is a convex surface, the thing side surface of described the 4th lens be all aspheric surface as side surface;
Wherein, the thickness of described first lens on optical axis is CT1, the thickness of described second lens on optical axis is CT2, the thickness of described the 4th lens on optical axis is CT4, the focal length of whole optical lens group is f, wherein, described optical lens group is provided with an aperture in addition, described aperture to described the 4th lens are Sd as the distance of side surface on optical axis, the described first lens thing side surface to described the 4th lens are Td as the distance of side surface on optical axis, satisfy the following relationship formula:
0.0＜CT1/CT2＜0.6；
0.25＜CT4/f＜0.85; And
0.75＜Sd/Td＜0.94。
19. optical lens group as claimed in claim 18 is characterized in that, the described first lens thing side surface is convex surface and is concave surface as side surface that the focal length of whole optical lens group is f, and the focal length of described first lens is f1, satisfies the following relationship formula:
0.0＜f/f1＜0.5。
20. optical lens group as claimed in claim 19, it is characterized in that, described the 3rd lens material is a plastic cement, and described the 4th lens material is a plastic cement, and described the 4th lens be provided with at least one point of inflexion as at least one surface in side surface and the thing side surface.
21. optical lens group as claimed in claim 20 is characterized in that, the thing side surface radius-of-curvature of described the 4th lens is R7, described the 4th lens be R8 as the side surface radius-of-curvature, satisfy the following relationship formula:
|R7/R8|＜0.70。
22. optical lens group as claimed in claim 20, it is characterized in that, the maximum magnitude position of passing through as the side surface glazed thread of described the 4th lens and the vertical range of optical axis are Y42, described the 4th lens as being that the position of Y42 is SAG42 with the distance that is tangential on the tangent plane on the lens axis summit apart from optical axis on the side surface, the thickness of described the 4th lens on optical axis is CT4, satisfies the following relationship formula:
-0.45＜SAG42/CT4＜0.3。
23. optical lens group as claimed in claim 20 is characterized in that, the thickness of described first lens on optical axis is CT1, and the thickness of described second lens on optical axis is CT2, satisfies the following relationship formula:
0.0＜CT1/CT2＜0.35。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010206205500U CN201852989U (en) | 2010-11-22 | 2010-11-22 | Optical lens group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206205500U CN201852989U (en) | 2010-11-22 | 2010-11-22 | Optical lens group |
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| Publication Number | Publication Date |
|---|---|
| CN201852989U true CN201852989U (en) | 2011-06-01 |
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| CN2010206205500U Expired - Lifetime CN201852989U (en) | 2010-11-22 | 2010-11-22 | Optical lens group |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102478701A (en) * | 2010-11-22 | 2012-05-30 | 大立光电股份有限公司 | Optical lens group |
| CN106154498A (en) * | 2015-05-15 | 2016-11-23 | 先进光电科技股份有限公司 | Optical imaging system |
| CN106249381A (en) * | 2015-06-04 | 2016-12-21 | 先进光电科技股份有限公司 | Optical imaging system |
| CN107817572A (en) * | 2016-09-14 | 2018-03-20 | 大立光电股份有限公司 | Image lens assembly, image capturing device and electronic device |
| CN108020907A (en) * | 2016-11-03 | 2018-05-11 | 先进光电科技股份有限公司 | Optical imaging system |
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2010
- 2010-11-22 CN CN2010206205500U patent/CN201852989U/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478701A (en) * | 2010-11-22 | 2012-05-30 | 大立光电股份有限公司 | Optical lens group |
| CN102478701B (en) * | 2010-11-22 | 2014-06-04 | 大立光电股份有限公司 | Optical lens group |
| CN106154498A (en) * | 2015-05-15 | 2016-11-23 | 先进光电科技股份有限公司 | Optical imaging system |
| US9989734B2 (en) | 2015-05-15 | 2018-06-05 | Ability Opto-Electronics Technology Co., Ltd. | Optical image capturing system |
| CN106154498B (en) * | 2015-05-15 | 2019-01-11 | 先进光电科技股份有限公司 | Optical imaging system |
| CN106249381A (en) * | 2015-06-04 | 2016-12-21 | 先进光电科技股份有限公司 | Optical imaging system |
| CN106249381B (en) * | 2015-06-04 | 2019-01-29 | 先进光电科技股份有限公司 | Optical imaging system |
| CN107817572A (en) * | 2016-09-14 | 2018-03-20 | 大立光电股份有限公司 | Image lens assembly, image capturing device and electronic device |
| CN107817572B (en) * | 2016-09-14 | 2020-07-03 | 大立光电股份有限公司 | Image lens assembly, image capturing device and electronic device |
| CN108020907A (en) * | 2016-11-03 | 2018-05-11 | 先进光电科技股份有限公司 | Optical imaging system |
| CN108020907B (en) * | 2016-11-03 | 2020-06-02 | 先进光电科技股份有限公司 | Optical imaging system |
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