CN108873271A - Telephoto lens, focal length camera mould group and electronic device - Google Patents
Telephoto lens, focal length camera mould group and electronic device Download PDFInfo
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- CN108873271A CN108873271A CN201810770907.4A CN201810770907A CN108873271A CN 108873271 A CN108873271 A CN 108873271A CN 201810770907 A CN201810770907 A CN 201810770907A CN 108873271 A CN108873271 A CN 108873271A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/004—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having four lenses
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Abstract
The invention discloses a kind of telephoto lens, focal length camera mould group and electronic devices.The telephoto lens of embodiment of the present invention successively includes first lens with positive refracting power, the second lens with negative refracting power, the third lens with refracting power and the 4th lens with refracting power from object side to image side.The object side of first lens is convex surface.The object side of second lens and image side surface are concave surface.The object side of the third lens is concave surface.Telephoto lens meets following relationship TTL/f<0.96；Wherein, TTL is the object side of the first lens to distance of the imaging surface on optical axis of telephoto lens, and f is telephoto lens effective focal length.The telephoto lens of embodiment of the present invention is configured by reasonable TTL, has shorter TTL, so as to shorten the optical tube length of telephoto lens.
Description
Technical field
The present invention relates to optical image technology, in particular to a kind of telephoto lens, focal length camera mould group and electronic device.
Background technique
The focal length of telephoto lens is long, and visual angle is small, is imaged on egative film big.So can above be taken than standard mirror in same distance
The bigger image of head is suitable for shooting the object of distant place.It, can be more effective since its field depth is smaller than standard lens
Ground blurs the prominent focusing main body of background, and shot subject is generally distant apart with camera, goes out in terms of the perspective of portrait
Existing deformation is smaller, and the portrait taken is more lively, therefore telephoto lens is often called portrait lens by people.However, telephoto lens
Lens barrel it is generally longer.
Summary of the invention
In view of this, embodiment of the present invention provides a kind of telephoto lens, focal length camera mould group and electronic device.
The telephoto lens of embodiment of the present invention successively includes first lens with positive refracting power, tool from object side to image side
There are the second lens, the third lens with refracting power and the 4th lens with refracting power of negative refracting power.First lens
Object side be convex surface.The object side of second lens and image side surface are concave surface.The object side of the third lens is recessed
Face.The telephoto lens meets following relationship：TTL/f<0.96；Wherein, TTL is the object side of first lens described in
Distance of the imaging surface of telephoto lens on optical axis, f are the telephoto lens effective focal length.
The telephoto lens of embodiment of the present invention is configured by reasonable TTL, has shorter TTL, so as to shorten length
The optical tube length of zoom lens.
In some embodiments, the telephoto lens meets following relationship：f1/f<0.51；Wherein, f1 is described the
The focal length of one lens.
When meeting above-mentioned relation formula, the first lens have suitable focal length, are conducive in the field angle for expanding telephoto lens
Balance is obtained with the optics total length of shortening telephoto lens, and the depth of field is larger, it is easier to be directed at focus.
In some embodiments, the telephoto lens meets following relationship：SD/TTL<0.75；Wherein, SD is described
The object side of first lens to the 4th lens distance of the image side surface on optical axis.
When meeting above-mentioned relation formula, the length of the device (lens barrel) for fixing all lens can be shortened, be conducive to give birth to
It produces, improves yield.
In some embodiments, the telephoto lens meets following relationship：OA/IMA<0.4；Wherein, OA is described
The maximum effective diameter of first lens lens into the 4th lens, IMA are cornerwise length of the photosensitive element in imaging surface
Degree.
When meeting above-mentioned relation formula, is conducive to the miniaturization of telephoto lens and meets high pixel request.
In some embodiments, the telephoto lens meets following relationship：-5<R4/R5<0；Wherein, R4 is described
The radius of curvature of the image side surface of second lens, R5 are the radius of curvature of the object side of the third lens.
When meeting above-mentioned relation formula, the shape of the second lens and the third lens can be well matched with, and not only contribute to
The processing and manufacturing of two lens and the third lens and the assembling of telephoto lens promote product yield, also help amendment aberration.
In some embodiments, the telephoto lens further includes diaphragm, and the telephoto lens meets following relationship：
0.2<SL/TTL<0.9；Wherein, SL is distance of the diaphragm to the imaging surface on optical axis.
When meeting above-mentioned relation formula, the outgoing pupil of telephoto lens can be made far from imaging surface, therefore light will be vertical to approach
Incident mode is incident on photosensitive element, the telecentricity characteristic of image side is advantageously implemented, so that photosensitive element is photosensitive quick
Sensitivity improves, and reduction system generates the possibility at dark angle.
In some embodiments, the telephoto lens meets following relationship：0.5<CT1/D<1；Wherein, CT1 is institute
The center thickness of the first lens is stated, D is the Y radius of first lens.
When meeting above-mentioned relation formula, the first lens have more appropriate size, are conducive to the imaging for promoting telephoto lens
Quality and the height for shortening telephoto lens, can also lower molding difficulty, and improve yield, reduce cost.
In some embodiments, first lens to the 4th lens be plastic lens or glass lens, it is described
Telephoto lens meets following relationship：0≤N≤4；Wherein, N is that first lens are saturating using glass into the 4th lens
The quantity of mirror.
In this way, reasonable disposition of the telephoto lens by the material to lens, is conducive to aberration correction and solves the problems, such as temperature drift.
In addition, being arranged in pairs or groups using four pieces of eyeglass lighter in weight by reasonable focal power, production cost can be reduced and reaching satisfactory
Optical property.
In some embodiments, first lens at least one surface of the 4th lens is aspherical.
In this way, telephoto lens can be by the radius of curvature and asphericity coefficient of adjusting lens surface, to reduce eyeglass
Quantity, effectively shorten the total length of telephoto lens, and the use of diversification face type can effectively correct telephoto lens
Aberration improves image quality.
The focal length camera mould group of embodiment of the present invention includes the telephoto lens of photosensitive element and any of the above-described embodiment.
The image side of the telephoto lens is arranged in the photosensitive element.
Embodiment of the present invention focal length camera mould group is configured by reasonable TTL, has shorter TTL, so as to shorten
The optical tube length of telephoto lens.
The electronic device of embodiment of the present invention includes the focal length camera mould group of shell and above embodiment.The focal length
Camera mould group is installed on the housing.
The electronic device of embodiment of the present invention is configured by reasonable TTL, has shorter TTL, so as to shorten length
The optical tube length of zoom lens.
In some embodiments, the electronic device further includes wide angle camera mould group, and the wide angle camera is mounted on institute
It states on shell, the electronic device can be obtained focal length image by focal length camera mould group and be obtained by wide angle camera mould group wide
Angle image.
In this way, electronic device can with the short system effective focal length being mounted on shell, compared with the wide angle camera mould group of wide viewing angle
Collocation uses, and when pick-up image, which will allow user to carry out between different cameral function (taking the photograph remote or wide-angle)
Selection also can allow algorithm and achieve the effect that optical zoom, to promote imaging effect.
The additional aspect and advantage of embodiment of the present invention will be set forth in part in the description, partially will be from following
Become obvious in description, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage can be from combining in description of the following accompanying drawings to embodiment
It will be apparent and be readily appreciated that, wherein：
Fig. 1 is the structural schematic diagram of the telephoto lens of first embodiment of the invention；
Fig. 2 is the longitudinal aberration diagram (mm) of telephoto lens in first embodiment；
Fig. 3 is the curvature of field figure (mm) of telephoto lens in first embodiment；
Fig. 4 is the distortion figure (%) of telephoto lens in first embodiment；
Fig. 5 is the structural schematic diagram of the telephoto lens of second embodiment of the invention；
Fig. 6 is the longitudinal aberration diagram (mm) of telephoto lens in second embodiment；
Fig. 7 is the curvature of field figure (mm) of telephoto lens in second embodiment；
Fig. 8 is the distortion figure (%) of telephoto lens in second embodiment；
Fig. 9 is the structural schematic diagram of the telephoto lens of third embodiment of the invention；
Figure 10 is the longitudinal aberration diagram (mm) of telephoto lens in 3rd embodiment；
Figure 11 is the curvature of field figure (mm) of telephoto lens in 3rd embodiment；
Figure 12 is the distortion figure (%) of telephoto lens in 3rd embodiment；
Figure 13 is the structural schematic diagram of the telephoto lens of fourth embodiment of the invention；
Figure 14 is the longitudinal aberration diagram (mm) of telephoto lens in fourth embodiment；
Figure 15 is the curvature of field figure (mm) of telephoto lens in fourth embodiment；
Figure 16 is the distortion figure (%) of telephoto lens in fourth embodiment；
Figure 17 is the structural schematic diagram of the focal length camera mould group of embodiment of the present invention；
Figure 18 is the structural schematic diagram of the electronic device of embodiment of the present invention；With
Figure 19 is the structural schematic diagram of the electronic device of another embodiment of the present invention.
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for
Purpose is described, relative importance is not understood to indicate or imply or implicitly indicates the quantity of indicated technical characteristic.
" first " is defined as a result, the feature of " second " can explicitly or implicitly include one or more feature.?
In description of the invention, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected or can mutually communicate；It can be directly connected, it can also be by between intermediary
It connects connected, can be the connection inside two elements or the interaction relationship of two elements.For the ordinary skill of this field
For personnel, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
Following disclosure provides many different embodiments or example is used to realize different structure of the invention.In order to
Simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and
And it is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or setting
Relationship.In addition, the present invention provides various specific techniques and material example, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
Also referring to Fig. 1, Fig. 5, Fig. 9 and Figure 13, the telephoto lens 10 of embodiment of the present invention is wrapped from object side to image side
Include the first lens L1 with positive refracting power, the second lens L2 with negative refracting power, the third lens L3 with refracting power and
The 4th lens L4 with refracting power.
It is convex surface that first lens L1, which has the object side S1 of object side S1 and image side surface S2, the first lens L1,.Second lens
It is concave surface that L2, which has the object side S3 and image side surface S4 of object side S3 and image side surface S4, the second lens L2,.The third lens L3 tool
Having object side S5 and image side surface S6, the object side S5 of the third lens L3 is concave surface.4th lens L4 has object side S7 and image side
Face S8.
Telephoto lens 10 meets following relationship：TTL/f<0.96；Wherein, the object side S1 that TTL is the first lens L1 is arrived
Distance of the imaging surface S11 (namely photosensitive element 20 in Figure 17) of telephoto lens 10 on optical axis, f are that telephoto lens 10 is effective
Focal length.In other words, TTL/f can be any number less than 0.96, for example, the value can for 0.1,0.15,0.754,
0.825,0.917,0.937,0.941,0.95,0.956,0.958,0.959 etc..
When telephoto lens 10 is for when being imaged, subject OBJ to be issued or the light of reflection enters length from object side direction
Zoom lens 10, and sequentially pass through the first lens L1, the second lens L2, the third lens L3, the 4th lens L4 and there is object side S9
And the infrared fileter L5 of image side surface S10, it finally converges on imaging surface S11.
The telephoto lens 10 of embodiment of the present invention is configured by reasonable TTL, has shorter TTL, so as to shorten
The optical tube length of telephoto lens 10.
In some embodiments, telephoto lens 10 further includes diaphragm STO.Diaphragm STO can be aperture diaphragm or visual field
Diaphragm.Embodiment of the present invention is illustrated so that diaphragm STO is aperture diaphragm as an example.Diaphragm STO can be set at any one piece
On the surface of lens, or it is arranged before the first lens L1, or is arranged between any two pieces of lens, or is arranged in the 4th lens
Between L4 and infrared fileter L5.For example, in first embodiment, second embodiment and fourth embodiment, such as Fig. 1, Fig. 5, figure
Shown in 13, diaphragm STO is arranged between the first lens L1 and the second lens L2；In the third embodiment, as shown in figure 9, diaphragm
STO is arranged between the second lens L2 and the third lens L3.
In some embodiments, telephoto lens 10 meets following relationship：f1/f<0.51；Wherein, f1 is the first lens
The focal length of L1.In other words, f1/f can be any number less than 0.51, for example, the value can for -100, -50, -40, -
30,0.44,0.457,0.5,0.504,0.505,0.508 etc..
When meeting above-mentioned relation formula, the first lens L1 has suitable focal length, is conducive in the view for expanding telephoto lens 10
Balance is obtained in the optics total length of rink corner and shortening telephoto lens 10, and the depth of field is larger, it is easier to be directed at focus.
In some embodiments, telephoto lens 10 meets following relationship：SD/TTL<0.75；Wherein, SD is first saturating
Distance of the image side surface S8 of the object side S1 to the 4th lens L4 of mirror L1 on optical axis.In other words, SD/TTL can for less than
0.75 any number, for example, the value can for 0.1,0.152,0.2,0.242,0.265,0.659,0.65,0.7,0.717,
0.74 etc..
When meeting above-mentioned relation formula, the length of the device (lens barrel) for fixing all lens can be shortened, be conducive to give birth to
It produces, improves yield.
In some embodiments, telephoto lens 10 meets following relationship：OA/IMA<0.4；Wherein, OA is first saturating
The maximum effective diameter of mirror L1 lens into the 4th lens L4 (takes effective diameter in the first lens L1 to the 4th lens L4 maximum
The effective diameters of lens be maximum effective diameter), IMA is photosensitive element 20 shown in Figure 17 in imaging surface S11 (i.e. in Figure 17
Photosensitive element 20) cornerwise length.In other words, OA/IMA can be any number less than 0.4, for example, the value can
Think 0.112,0.155,0.212,0.243,0.265,0.285,0.34,0.343,0.355,0.365,0.386,0.392 etc.
Deng.
When meeting above-mentioned relation formula, is conducive to the miniaturization of telephoto lens 10 and meets high pixel request.
In some embodiments, telephoto lens 10 meets following relationship：-5<R4/R5<0；Wherein, R4 is second saturating
The radius of curvature of the image side surface S4 of mirror L2, R5 are the radius of curvature of the object side S5 of the third lens L3.In other words, R4/R5 can
Think any number between section (- 5,0), for example, the value can for -4.81, -4.58, -4, -3.52, -3, -0.6, -
0.4, -0.221, -0.105, -0.081, -0.018, -0.01 etc..
When meeting above-mentioned relation formula, the shape of the second lens L2 and the third lens L3 can be well matched with, not only favorably
In the processing and manufacturing of the second lens L2 and the third lens L3 and the assembling of telephoto lens 10, product yield is promoted, also helps and repairs
Positive aberration.
In some embodiments, telephoto lens 10 meets following relationship：0.2<SL/TTL<0.9；Wherein, SL is light
Distance of the late STO to imaging surface S11 (i.e. photosensitive element 20 in Figure 17) on optical axis.
In other words, SL/TTL can any number between section (0.2,0.9), for example, the value can for 0.25,
0.28,0.82,0.84,0.85,0.89 etc..
When meeting above-mentioned relation formula, the outgoing pupil of telephoto lens 10 can be made far from imaging surface S11, therefore light will be with close
The mode of vertical incidence is incident on photosensitive element 20 shown in Figure 17, is advantageously implemented the telecentricity characteristic of image side, so that
The photosensitive susceptibility of photosensitive element 20 shown in Figure 17 improves, and reduces the possibility that telephoto lens 10 generates dark angle.
In some embodiments, telephoto lens 10 meets following relationship：0.5<CT1/D<1；Wherein, CT1 first
The center thickness of lens L1, D are the Y radius of the first lens L1.In other words, CT1/D can appoint between section (0.5,1)
Meaning numerical value, for example, the value can be 0.51,0.55,0.6,0.65,0.82,0.85,0.89,0.9,0.95,0.98 etc..
When meeting above-mentioned relation formula, the first lens L1 has more appropriate size, is conducive to promote telephoto lens 10
Image quality and the height for shortening telephoto lens 10, can also lower molding difficulty, and improve yield, reduce cost.
In some embodiments, the first lens L1 to the 4th lens L4 is plastic lens or glass lens, telephoto lens
10 meet following relationship：0≤N≤4；Wherein, N is the quantity that the first lens L1 uses glass lens into the 4th lens L4.
In other words, N can arbitrary integer between section [0,4], for example, the value can be 0,1,2,3,4.For example, first
In embodiment, the first lens L1 to the 4th lens L4 is plastic lens；In a second embodiment, the first lens L1 and second is saturating
Mirror L2 is glass lens, and the third lens L3 and the 4th lens L4 are plastic lens；In 3rd embodiment and fourth embodiment, the
One lens L1 and the third lens L3 is glass lens, and the second lens L2 and the 4th lens L4 are plastic lens.
In this way, reasonable disposition of the telephoto lens 10 by the material to lens, in aberration correction and solves the problems, such as temperature drift
Ultrathin may be implemented simultaneously, and cost is relatively low.In addition, using four pieces of eyeglasses, lighter in weight is taken by reasonable focal power
Match, production cost can be reduced and reaches satisfactory optical property.
In some embodiments, at least one surface of at least one lens is aspherical in telephoto lens 10.Example
Such as, in first embodiment, the object side and image side surface of the first lens L1, the third lens L3 and the 4th lens L4 are aspheric
Face.
In some embodiments, the first lens L1, the second lens L2, the third lens L3 and the 4th lens L4 are non-
Spherical mirror.Aspherical face type is determined by following formula：Wherein, Z is aspherical takes up an official post
Some fore-and-aft distance with surface vertices, r is distance of the aspherical any point to optical axis, and c is vertex curvature (radius of curvature
It is reciprocal), k is the constant of the cone, and Ai is the correction factor of aspherical i-th-th rank.
In this way, telephoto lens 10 can be effectively shortened by the radius of curvature and asphericity coefficient of each lens surface of adjusting
The total length of telephoto lens 10, and can effectively aberration correction, improve image quality.
First embodiment：
It include the first lens L1, the from object side to image side referring to FIG. 1 to FIG. 4, in the infrared lens 10 of first embodiment
Two lens L2, the third lens L3, the 4th lens L4 and infrared fileter L5.
First lens L1 has positive refracting power, and material is plastics, and object side S1 is convex surface, and image side surface S2 is at optical axis
It is plane at circumference for convex surface, and is all aspherical.Second lens L2 has negative refracting power, and material is plastics, object side
Face S3 is concave surface at optical axis, is plane at circumference, and image side surface S4 is concave surface, and object side S3 is spherical surface, and image side surface S4 is non-
Spherical surface.The third lens L3 has positive refracting power, and material is plastics, and object side S5 is concave surface, and image side surface S6 is convex surface, and all
It is aspherical.4th lens L4 has negative refracting power, and material is plastics, and object side S7 is concave surface, and image side surface S8 is convex surface,
It and is all aspherical.
Diaphragm STO is arranged between the first lens L1 and the second lens L2.The F-number FNO=2.6 of infrared lens 10.
Infrared fileter L5 is glass material, is arranged between the 4th lens L4 and imaging surface S11 and does not influence infrared
The focal length of camera lens 10.
In first embodiment, the effective focal length of infrared lens 10 is f=9.6, and the F-number of infrared lens 10 is FNO=
2.6, the field angle of infrared lens 10 is FOV=31 degree.Infrared lens 10 meet the following conditions：TTL/f=0.958；F1/f=
0.457；SD/TTL=0.597；OA/IMA=0.343；R4/R5=-0.81；SL/TTL=0.81；CT1/D=0.9.
Telephoto lens 10 meets the condition of following table：
Table 1
Table 2
Second embodiment
It please refers to Fig. 5 to Fig. 8, includes the first lens L1, the from object side to image side in the infrared lens 10 of second embodiment
Two lens L2, the third lens L3, the 4th lens L4 and infrared fileter L5.
First lens L1 has positive refracting power, and material is glass, and object side S1 is convex surface, and image side surface S2 is convex surface,
It and is all aspherical.Second lens L2 has negative refracting power, and material is glass, and object side S3 is concave surface at optical axis, in
It is plane at circumference, image side surface S4 is concave surface, and object side S3 is spherical surface, and image side surface S4 is aspherical.The third lens L3 has just
Refracting power, and material is plastics, object side S5 is concave surface, and image side surface S6 is convex surface, and is all aspherical.4th lens L4 tool
There is negative refracting power, and material is plastics, object side S7 is concave surface, and it is convex at circumference that image side surface S8, which is concave surface at optical axis,
Face, and be all aspherical.
Diaphragm STO is arranged between the first lens L1 and the second lens L2.The F-number FNO=2.6 of infrared lens 10.
Infrared fileter L5 is glass material, is arranged between the 4th lens L4 and imaging surface S11 and does not influence infrared
The focal length of camera lens 10.
Telephoto lens 10 meets the condition of following table：
Table 3
Table 4
Following data can be obtained according to table 3 and table 4：
| f(mm) | 9.8 | SD/TTL | 0.717 |
| FNO | 2.6 | OA/IMA | 0.343 |
| FOV (degree) | 30.6 | R4/R5 | -1.07 |
| TTL/f | 0.937 | SL/TTL | 0.84 |
| f1/f | 0.416 | CT1/D | 0.76 |
3rd embodiment
Please refer to Fig. 9 to Figure 12, in the infrared lens 10 of 3rd embodiment, include from object side to image side the first lens L1,
Second lens L2, the third lens L3, the 4th lens L4 and infrared fileter L5.
First lens L1 has positive refracting power, and material is glass, and object side S1 is convex surface, and image side surface S2 is convex surface,
It and is all aspherical.Second lens L2 have negative refracting power, and material be plastics, object side S3 be concave surface, image side surface S4 in
It is concave surface at optical axis, is plane at circumference, object side S3 is spherical surface, and image side surface S4 is aspherical.The third lens L3 has negative
Refracting power, and material is glass, object side S5 is concave surface, and it is convex surface at circumference that image side surface S6, which is concave surface at optical axis, and
It is all aspherical.4th lens L4 has positive refracting power, and material is plastics, and object side S7 is concave surface, and image side surface S8 is convex
Face, and be all aspherical.
Diaphragm STO is arranged between the second lens L2 and the third lens L3.The F-number FNO=2.6 of infrared lens 10.
Infrared fileter L5 is glass material, is arranged between the 4th lens L4 and imaging surface S11 and does not influence infrared
The focal length of camera lens 10.
Telephoto lens 10 meets the condition of following table：
Table 5
Table 6
Following data can be obtained according to table 5 and table 6：
| f(mm) | 9.77 | SD/TTL | 0.659 |
| FNO | 2.6 | OA/IMA | 0.343 |
| FOV (degree) | 30.6 | R4/R5 | -4.81 |
| TTL/f | 0.941 | SL/TTL | 0.296 |
| f1/f | 0.421 | CT1/D | 0.74 |
Fourth embodiment
Please refer to Figure 13 to Figure 16, in the infrared lens 10 of fourth embodiment, include from object side to image side the first lens L1,
Second lens L2, the third lens L3, the 4th lens L4 and infrared fileter L5.
First lens L1 has positive refracting power, and material is glass, and object side S1 is convex surface, and image side surface S2 is at optical axis
It is plane at circumference for concave surface, and is all aspherical.Second lens L2 has negative refracting power, and material is plastics, object side
Face S3 is concave surface, and image side surface S4 is concave surface, and is all aspherical.The third lens L3 has positive refracting power, and material is glass,
Object side S5 is is concave surface at optical axis, the convex surface at circumference, and image side surface S6 is convex surface, and is all aspherical.4th lens L4
With negative refracting power, and material is plastics, and object side S7 is concave surface, and image side surface S8 is convex surface, and is all aspherical.
Diaphragm STO is arranged between the first lens L1 and the second lens L2.The F-number FNO=2.6 of infrared lens 10.
Infrared fileter L5 is glass material, is arranged between the 4th lens L4 and imaging surface S11 and does not influence infrared
The focal length of camera lens 10.
Telephoto lens 10 meets the condition of following table：
Table 7
Table 8
Following data can be obtained according to table 7 and table 8：
| f(mm) | 9.6 | SD/TTL | 0.643 |
| FNO | 2.6 | OA/IMA | 0.343 |
| FOV (degree) | 31 | R4/R5 | -0.018 |
| TTL/f | 0.956 | SL/TTL | 0.8 |
| f1/f | 0.504 | CT1/D | 0.82 |
Figure 17 is please referred to, the focal length camera mould group 100 of embodiment of the present invention includes photosensitive element 20 and any of the above-described reality
Apply the telephoto lens 10 of mode.The image side of telephoto lens 10 is arranged in photosensitive element 20.
Photosensitive element 20 can use complementary metal oxide semiconductor (CMOS, Complementary Metal Oxide
Semiconductor) photosensitive element or charge coupled cell (CCD, Charge-coupled Device) photosensitive element.
The electronic device 1000 for please referring to Figure 18 and Figure 19 embodiment of the present invention includes shell 400 and above embodiment
Focal length camera mould group 100.Focal length camera mould group 100 is mounted on shell 400.Shell 400 can play focal length camera mould group
To protective effect.
In some embodiments, electronic device 1000 further includes wide angle camera mould group 200, and wide angle camera mould group 200 is pacified
On shell 400, electronic device 100 can be obtained focal length image by focal length camera mould group 100 and pass through wide angle camera mould
Group 200 obtains wide angle picture.
In this way, electronic device 1000 can with the short system effective focal length being mounted on shell 400, compared with the wide-angle phase of wide viewing angle
The collocation of machine mould group 200 uses, and when pick-up image, which will allow user different cameral function (taking the photograph remote or wide-angle)
Between selected, also can allow algorithm achieve the effect that optical zoom, to promote imaging effect.
The electronic device 1000 of embodiment of the present invention includes but is not limited to for smart phone (as shown in figure 18), mobile electricity
Words, personal digital assistant (Personal Digital Assistant, PDA), game machine, personal computer (personal
Computer, PC), camera, smartwatch, information terminal apparatus or the family with camera function such as tablet computer (shown in Figure 19)
Electric product etc..
In the description of this specification, reference term " certain embodiments ", " embodiment ", " some embodiment party
The description of formula ", " exemplary embodiment ", " example ", " specific example " or " some examples " etc. means in conjunction with the embodiment party
Formula or example particular features, structures, materials, or characteristics described are contained at least one embodiment or example of the invention
In.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover,
Particular features, structures, materials, or characteristics described can be in any one or more embodiments or example with suitable
Mode combine.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one described feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two,
Three etc., unless otherwise specifically defined.
Although embodiments of the present invention have been shown and described above, it is to be understood that above embodiment is
Illustratively, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be right
Above embodiment is changed, modifies, replacement and variant, and the scope of the present invention is defined by the claims and their equivalents.
Claims (12)
1. a kind of telephoto lens, which is characterized in that the telephoto lens successively includes from object side to image side：
The first lens with positive refracting power, the object side of first lens are convex surface；
The second lens with negative refracting power, the object side of second lens and image side surface are concave surface；
The third lens with refracting power, the object side of the third lens are concave surface；And
The 4th lens with refracting power；
The telephoto lens meets following relationship：
TTL/f<0.96；
Wherein, TTL is the object side of first lens to distance of the imaging surface on optical axis of the telephoto lens, and f is institute
State telephoto lens effective focal length.
2. telephoto lens according to claim 1, which is characterized in that the telephoto lens meets following relationship：
f1/f<0.51；
Wherein, f1 is the focal length of first lens.
3. telephoto lens according to claim 1, which is characterized in that the telephoto lens meets following relationship：
SD/TTL<0.75；
Wherein, SD is the object side of first lens to distance of the image side surface on optical axis of the 4th lens.
4. telephoto lens according to claim 1, which is characterized in that the telephoto lens meets following relationship：
OA/IMA<0.4；
Wherein, OA be first lens lens into the 4th lens maximum effective diameter, IMA be photosensitive element at
Cornerwise length of image planes.
5. telephoto lens according to claim 1, which is characterized in that the telephoto lens meets following relationship：
-5<R4/R5<0；
Wherein, R4 is the radius of curvature of the image side surface of second lens, and R5 is the curvature half of the object side of the third lens
Diameter.
6. telephoto lens according to claim 1, which is characterized in that the telephoto lens further includes diaphragm, the focal length
Camera lens meets following relationship：
0.2<SL/TTL<0.9；
Wherein, SL is distance of the diaphragm to the imaging surface on optical axis.
7. telephoto lens according to claim 1, which is characterized in that the telephoto lens meets following relationship：
0.5<CT1/D<1；
Wherein, CT1 is the center thickness of first lens, and D is the Y radius of first lens.
8. telephoto lens according to claim 1, which is characterized in that first lens to the 4th lens are plastics
Lens or glass lens, the telephoto lens meet following relationship：
0≤N≤4；
Wherein, N is the quantity that first lens use glass lens into the 4th lens.
9. telephoto lens according to claim 1, which is characterized in that first lens to the 4th lens are at least
One surface is aspherical.
10. a kind of focal length camera mould group, which is characterized in that the focal length camera mould group includes：
Telephoto lens described in claim 1 to 9 any one；And
The image side of the telephoto lens is arranged in photosensitive element, the photosensitive element.
11. a kind of electronic device, which is characterized in that the electronic device includes：
Shell；With
Focal length camera mould group described in any one of claim 10, the focal length camera mould group installation is on the housing.
12. electronic device according to claim 11, which is characterized in that the electronic device further includes wide angle camera mould
Group, on the housing, the electronic device can obtain focal length by the focal length camera mould group for the wide angle camera installation
Image and pass through the wide angle camera mould group obtain wide angle picture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810770907.4A CN108873271A (en) | 2018-07-13 | 2018-07-13 | Telephoto lens, focal length camera mould group and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810770907.4A CN108873271A (en) | 2018-07-13 | 2018-07-13 | Telephoto lens, focal length camera mould group and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108873271A true CN108873271A (en) | 2018-11-23 |
Family
ID=64301942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810770907.4A Pending CN108873271A (en) | 2018-07-13 | 2018-07-13 | Telephoto lens, focal length camera mould group and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108873271A (en) |
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| CN110109234A (en) * | 2019-05-30 | 2019-08-09 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN110275180A (en) * | 2019-06-27 | 2019-09-24 | Oppo广东移动通信有限公司 | Collimate camera lens, mode of laser group, depth camera and electronic device |
| WO2020259607A1 (en) * | 2019-06-27 | 2020-12-30 | 华为技术有限公司 | Optical lens group, camera and terminal device |
| CN112305736A (en) * | 2019-07-31 | 2021-02-02 | Oppo广东移动通信有限公司 | Zoom lens, camera module and electronic device |
| CN112684580A (en) * | 2020-12-29 | 2021-04-20 | 诚瑞光学(苏州)有限公司 | Image pickup optical lens |
| CN113534419A (en) * | 2021-09-15 | 2021-10-22 | 宁波永新光学股份有限公司 | Clear on-vehicle optical imaging lens of superelevation |
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| US11953654B2 (en) | 2016-02-02 | 2024-04-09 | Largan Precision Co., Ltd. | Image capturing lens system, image capturing apparatus and electronic device |
| CN110109234A (en) * | 2019-05-30 | 2019-08-09 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN110109234B (en) * | 2019-05-30 | 2024-04-02 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN110275180A (en) * | 2019-06-27 | 2019-09-24 | Oppo广东移动通信有限公司 | Collimate camera lens, mode of laser group, depth camera and electronic device |
| WO2020259607A1 (en) * | 2019-06-27 | 2020-12-30 | 华为技术有限公司 | Optical lens group, camera and terminal device |
| WO2020259696A1 (en) * | 2019-06-27 | 2020-12-30 | 华为技术有限公司 | Optical lens group, camera, and terminal device |
| CN114355563A (en) * | 2019-06-27 | 2022-04-15 | 华为技术有限公司 | Optical lens group, camera and terminal equipment |
| EP3964875A4 (en) * | 2019-06-27 | 2022-07-13 | Huawei Technologies Co., Ltd. | Optical lens group, camera and terminal device |
| CN112305736A (en) * | 2019-07-31 | 2021-02-02 | Oppo广东移动通信有限公司 | Zoom lens, camera module and electronic device |
| CN112684580A (en) * | 2020-12-29 | 2021-04-20 | 诚瑞光学(苏州)有限公司 | Image pickup optical lens |
| CN113534419A (en) * | 2021-09-15 | 2021-10-22 | 宁波永新光学股份有限公司 | Clear on-vehicle optical imaging lens of superelevation |
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