CN204389775U - Pick-up lens - Google Patents
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- CN204389775U CN204389775U CN201520043024.5U CN201520043024U CN204389775U CN 204389775 U CN204389775 U CN 204389775U CN 201520043024 U CN201520043024 U CN 201520043024U CN 204389775 U CN204389775 U CN 204389775U
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Abstract
The utility model discloses a kind of pick-up lens, and it comprises from the object side to image side successively: first lens with positive refracting power, and its thing side surface is convex surface and is aspheric surface; There are the second lens of refracting power; Have the 3rd lens of negative refracting power, its thing side surface is concave surface and surface, image side is convex surface, and is aspheric surface; Have the 4th lens of positive refracting power, its thing side surface is convex surface and surface, image side is concave surface, is aspheric surface, and at least one face exists at least one point of inflexion; Camera lens meets following relational expression: 0.6<T12/T23<2.0;-1.7<f1/f3<-0.7;-8< (R7+R8)/(R7-R8) <-3; Wherein, T12 is the first lens and the spacing of the second lens on the optical axis of pick-up lens, T23 is the second lens and the spacing of the 3rd lens on the optical axis of pick-up lens, f1 is the focal length of the first lens, f3 is the focal length of the 3rd lens, R7 is the radius-of-curvature of the 4th lens thing side surface, and R8 is the radius-of-curvature on the 4th surface, lens image side.So, high imaging quality can be obtained and undersized pick-up lens.
Description
Technical field
The utility model relates to imaging technique, particularly a kind of pick-up lens.
Background technology
Along with the development of technology, portable type electronic product has entered into the life of ordinary populace, and its camera function is also enjoy people to pay close attention to, and therefore market is always larger for the demand of the pick-up lens of miniaturization.The photo-sensitive cell of general phtographic lens is photosensitive coupling element or Complimentary Metal-Oxide semiconductor element two kinds, along with progressing greatly of manufacture of semiconductor technology, the Pixel Dimensions of photo-sensitive cell reduces, overall dimensions is more and more less, therefore, market is more and more higher to the requirement of pick-up lens miniaturization, high performance in electronic product.
But the Lens of current three-chip type or four-piece type pick-up lens and image quality can not meet the requirement in market, a kind of image quality of market demand is good, and can reduce the pick-up lens of overall length further.
Utility model content
The utility model is intended at least to solve one of technical matters existed in prior art.
For this reason, the utility model needs to provide a kind of pick-up lens, and it comprises from the object side to image side successively:
Have the first lens of positive refracting power, its thing side surface is convex surface and is aspheric surface;
There are the second lens of refracting power;
Have the 3rd lens of negative refracting power, its thing side surface is concave surface and surface, image side is convex surface, and is aspheric surface;
Have the 4th lens of positive refracting power, its thing side surface is convex surface and surface, image side is concave surface, is aspheric surface, and at least one face exists at least one point of inflexion;
Described camera lens meets following relational expression:
0.6<T12/T23<2.0；
-1.7<f1/f3<-0.7；
-8<(R7+R8)/(R7-R8)<-3；
Wherein, T12 is described first lens and the spacing of described second lens on the optical axis of described pick-up lens, T23 is described second lens and the spacing of described 3rd lens on the optical axis of described pick-up lens, f1 is the focal length of described first lens, f3 is the focal length of described 3rd lens, R7 is the radius-of-curvature of described 4th lens thing side surface, and R8 is the radius-of-curvature on described 4th surface, lens image side.
In some embodiments, described first lens, described second lens, described 3rd lens and described 4th lens are all made of plastics.
In some embodiments, described pick-up lens also comprises diaphragm, and described diaphragm is arranged between object and the second lens.
In some embodiments, described pick-up lens meets following relational expression:
|f12/f34|<0.4；
Wherein, f12 is the combined focal length of described first lens and described second lens, and f34 is the combined focal length of described 3rd lens and described 4th lens.
In some embodiments, described pick-up lens meets following relational expression:
-1.5<f/f3<-0.5; And
-4<(R5+R6)/(R5-R6)<0；
Wherein, f is the effective focal length of described pick-up lens, and R5 is the radius-of-curvature of the thing side surface of described 3rd lens, and R6 is the radius-of-curvature on the surface, image side of described 3rd lens.
In some embodiments, described pick-up lens meets following relational expression:
0.5<f/f1<1.3；
Wherein, f is the effective focal length of described pick-up lens.
In some embodiments, described pick-up lens meets following relational expression:
0.9<f/f4<2.0；
Wherein, f is the effective focal length of described pick-up lens, and f4 is the focal length of described 4th lens.
In some embodiments, described pick-up lens meets following relational expression:
Relational expression: TTL/ImgH<1.7;
Wherein, TTL is the overall length of described pick-up lens, ImgH be described pick-up lens imaging surface on the half of effective pixel area diameter.
In some embodiments, described pick-up lens meets following relational expression:
37°<semi-FOV<42°；
Wherein, semi-FOV is the half at described pick-up lens maximum field of view angle.
In some embodiments, the surface, image side of described first lens is concave surface.
In some embodiments, described second lens have negative refracting power, and its thing side surface is concave surface, and surface, image side is convex surface.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the schematic diagram of the embodiment 1 of the pick-up lens of the utility model better embodiment;
Fig. 2 be embodiment 1 pick-up lens produce axle on chromaticity difference diagram (mm);
Fig. 3 is the astigmatism figure (mm) that the pick-up lens of embodiment 1 produces;
Fig. 4 is the distortion figure (%) that the pick-up lens of embodiment 1 produces;
Fig. 5 is the ratio chromatism, figure (μm) that the pick-up lens of embodiment 1 produces;
Fig. 6 is the schematic diagram of the embodiment 2 of the pick-up lens of the utility model better embodiment;
Fig. 7 be embodiment 2 pick-up lens produce axle on chromaticity difference diagram (mm);
Fig. 8 is the astigmatism figure (mm) that the pick-up lens of embodiment 2 produces;
Fig. 9 is the distortion figure (%) that the pick-up lens of embodiment 2 produces;
Figure 10 is the ratio chromatism, figure (μm) that the pick-up lens of embodiment 2 produces;
Figure 11 is the schematic diagram of the embodiment 3 of the pick-up lens of the utility model better embodiment;
Figure 12 be embodiment 3 pick-up lens produce axle on chromaticity difference diagram (mm);
Figure 13 is the astigmatism figure (mm) that the pick-up lens of embodiment 3 produces;
Figure 14 is the distortion figure (%) that the pick-up lens of embodiment 3 produces;
Figure 15 is the ratio chromatism, figure (μm) that the pick-up lens of embodiment 3 produces;
Figure 16 is the schematic diagram of the embodiment 4 of the pick-up lens of the utility model better embodiment;
Figure 17 be embodiment 4 pick-up lens produce axle on chromaticity difference diagram (mm);
Figure 18 is the astigmatism figure (mm) that the pick-up lens of embodiment 4 produces;
Figure 19 is the distortion figure (%) that the pick-up lens of embodiment 4 produces;
Figure 20 is the ratio chromatism, figure (μm) that the pick-up lens of embodiment 4 produces;
Figure 21 is the schematic diagram of the embodiment 5 of the pick-up lens of the utility model better embodiment;
Figure 22 be embodiment 5 pick-up lens produce axle on chromaticity difference diagram (mm);
Figure 23 is the astigmatism figure (mm) that the pick-up lens of embodiment 5 produces;
Figure 24 is the distortion figure (%) that the pick-up lens of embodiment 5 produces;
Figure 25 is the ratio chromatism, figure (μm) that the pick-up lens of embodiment 5 produces.
Figure 26 is the schematic diagram of the embodiment 6 of the pick-up lens of the utility model better embodiment;
Figure 27 be embodiment 6 pick-up lens produce axle on chromaticity difference diagram (mm);
Figure 28 is the astigmatism figure (mm) that the pick-up lens of embodiment 6 produces;
Figure 29 is the distortion figure (%) that the pick-up lens of embodiment 6 produces;
Figure 30 is the ratio chromatism, figure (μm) that the pick-up lens of embodiment 6 produces.
Figure 31 is the schematic diagram of the embodiment 7 of the pick-up lens of the utility model better embodiment;
Figure 32 be embodiment 7 pick-up lens produce axle on chromaticity difference diagram (mm);
Figure 33 is the astigmatism figure (mm) that the pick-up lens of embodiment 7 produces;
Figure 34 is the distortion figure (%) that the pick-up lens of embodiment 7 produces; And
Figure 35 is the ratio chromatism, figure (μm) that the pick-up lens of embodiment 7 produces.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.
In description of the present utility model, it is to be appreciated that term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more described features.In description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrically connected or can intercom mutually; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present utility model.Of the present utility model open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the utility model.In addition, the utility model can in different example repeat reference numerals and/or reference letter, this repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the utility model provides and the example of material, but those of ordinary skill in the art can recognize the application of other techniques and/or the use of other materials.
The pick-up lens of the utility model better embodiment comprises the first lens E1 with positive refracting power, the second lens E2 with refracting power from the object side to image side, has the 3rd lens E3 of negative refracting power, the 4th lens E4 with positive refracting power and optical filter E5.First lens E1 comprises thing side surface S1 and surface, image side S2; Second lens E2 comprises thing side surface S3 and surface, image side S4; 3rd lens E3 comprises thing side surface S5 and surface, image side S6; 4th lens E4 comprises thing side surface S7 and surface, image side S8; Optical filter E5 comprises thing side surface S9 and surface, image side S10.Wherein, thing side surface S1 is convex surface, and is aspheric surface; Thing side surface S5 is concave surface, and surface, image side S6 is convex surface, and thing side surface S5 and surface, image side S6 is aspheric surface; Thing side surface S7 is convex surface, and surface, image side S8 is concave surface, and thing side surface S7 and surface, image side S8 is aspheric surface, and in thing side surface S7 and surface, image side S8, at least one point of inflexion is contained at least one face.During use, pick-up lens images in image planes S11.
The pick-up lens of the utility model better embodiment meets following relational expression:
-1.7<f1/f3<-0.7；
Wherein, f1 is the focal length of the first lens E1, and f3 is the focal length of the 3rd lens E3.
Meet above formula requirement, can the tortuous power of reasonable distribution lens, effectively shorten pick-up lens total length while ensureing image quality.
The pick-up lens of the utility model better embodiment meets following relational expression:
0.6<T12/T23<2.0；
Wherein, T12 is the first lens E1 and the spacing of the second lens E2 on the optical axis of pick-up lens, and T23 is the second lens E2 and the spacing of the 3rd lens E3 on the optical axis of pick-up lens.
Meet above formula requirement, appropriately can distribute the spacing between lens, reduce the overall length of pick-up lens, and reduce the assembling difficulty of pick-up lens, allow the carrying out that assembling flow path is smooth, easy.
The pick-up lens of the utility model better embodiment meets following relational expression:
-8<(R7+R8)/(R7-R8)<-3；
Wherein, R7 is the radius-of-curvature of the 4th lens thing side surface, and R8 is the radius-of-curvature on the 4th surface, lens image side.
Meet above formula, coordinate surface, image side S8 that the point of inflexion is set, can be conducive to reducing light in the angle of imaging surface S11, thus promote image quality.
In the pick-up lens of the utility model better embodiment, the first lens E1, the second lens E2, the 3rd lens E3 and the 4th lens E4 are all made of plastics, and each lens thickness is even, improves the manufacturability of lens, are easy to manufacture, meet the requirement of producing and processing.
The pick-up lens of the utility model better embodiment also comprises diaphragm STO.Diaphragm STO is arranged between object and the second lens E2.
The pick-up lens of the utility model better embodiment meets following relational expression:
|f12/f34|<0.4；
Wherein, f12 is the combined focal length of the first lens E1 and the second lens E2, and f34 is the combined focal length of the 3rd lens E3 and the 4th lens E4.
Meet above formula, the integral dispensing of focusing can make the overall length of pick-up lens shorten, and in addition, the focal power reasonable distribution of f1 and f2, f3 and f4 (f2 is the focal length of the second lens E2 and f4 is the focal length of the 4th lens E4), is conducive to the correction of each aberration.
The pick-up lens of the utility model better embodiment meets following relational expression:
-1.5<f/f3<-0.5; And
-4<(R5+R6)/(R5-R6)<0；
Wherein, f is the effective focal length of pick-up lens, and R5 is the radius-of-curvature of the thing side surface S5 of the 3rd lens E3, and R6 is the radius-of-curvature of surface, the image side S6 of the 3rd lens E3.
Upper two formulas, to the requirement of the 3rd lens E3, are conducive to the overall length of shortening pick-up lens, improvement are hereby cut down and counted (petzval sum), and reduce the impact of aberration.
The pick-up lens of the utility model better embodiment meets following relational expression:
0.5<f/f1<1.3；
Meet above formula requirement, the first lens E1 has positive refracting power, coordinates its thing side surface S1 to be convex surface, effectively can expand field angle, and shorten the overall length of pick-up lens.
The pick-up lens of the utility model better embodiment meets following relational expression:
0.9<f/f4<2.0；
Meet above-mentioned requirements, coordinate the thing side surface S7 of the 4th lens E4 and at least one face of S8, surface, image side to there is at least one point of inflexion, the image quality improving pick-up lens can be conducive to.
The pick-up lens of the utility model better embodiment meets following relational expression:
TTL/ImgH<1.7；
Wherein, TTL is the overall length of pick-up lens, ImgH be pick-up lens imaging surface on the half of effective pixel area diameter.
Meet above formula requirement, be conducive to the miniaturization of pick-up lens.
The pick-up lens of the utility model better embodiment meets following relational expression:
37°<Semi-FOV<42°；
Wherein, semi-FOV is the half at pick-up lens maximum field of view angle.
The overall length of the pick-up lens of the utility model better embodiment is less than 3mm, be ultra-thin camera lens, and the field angle of camera lens is also larger.
In some embodiments, the thing side surface S1 of the first lens E1 is concave surface.
In some embodiments, the second lens E2 has negative refracting power, and its thing side surface S3 is concave surface, and surface, image side S4 is convex surface.
In some embodiments, first to fourth lens E1-E4 is aspherical lens, and aspheric shape is determined by following formula:
Wherein, h is that in aspheric surface, arbitrary point is to the height of optical axis, and c is vertex curvature, and k is conic constants, and Ai is the correction factor on aspheric surface i-th-th rank.
Below in each specific embodiment, reference wavelength is d light (d-line): 555nm.
Embodiment 1
In embodiment 1, pick-up lens meets the condition of form below:
Table 1
Table 2
In addition, f1=2.25mm; F2=-43.65mm; F3=-2.48mm; F4=1.97mm and f=2.03mm; TTL=2.65mm; Stop value is: 2.2.
Fig. 2 be the pick-up lens of embodiment 1 axle on chromaticity difference diagram (mm), Fig. 3 is the astigmatism figure (mm) of the pick-up lens of embodiment 1, Fig. 4 is the distortion figure (%) of the pick-up lens of embodiment 1, Fig. 5 is the pick-up lens ratio chromatism, figure (um) of embodiment 1, visible, the aberration of pick-up lens is effectively controlled.
Embodiment 2
In embodiment 2, pick-up lens meets the condition of form below:
Table 3
Table 4
In addition, f1=2.16mm; F2=25.88mm; F3=-1.73mm; F4=1.71mm and f=2.05mm; TTL=2.57mm; Stop value is: 2.2.
Fig. 7 be the pick-up lens of embodiment 2 axle on chromaticity difference diagram (mm), Fig. 8 is the astigmatism figure (mm) of the pick-up lens of embodiment 2, Fig. 9 is the distortion figure (%) of the pick-up lens of embodiment 2, Figure 10 is the pick-up lens ratio chromatism, figure (um) of embodiment 2, visible, the aberration of pick-up lens is effectively controlled.
Embodiment 3
In embodiment 3, pick-up lens meets the condition of form below:
Table 5
Table 6
In addition, f1=1.96mm; F2=-11.73mm; F3=-2.15mm; F4=1.89mm and f=2.06mm; TTL=2.66mm; Stop value is: 2.2.
Figure 12 be the pick-up lens of embodiment 3 axle on chromaticity difference diagram (mm), Figure 13 is the astigmatism figure (mm) of the pick-up lens of embodiment 3, Figure 14 is the distortion figure (%) of the pick-up lens of embodiment 3, Figure 15 is the pick-up lens ratio chromatism, figure (um) of embodiment 3, visible, the aberration of pick-up lens is effectively controlled.
Embodiment 4
In embodiment 4, pick-up lens meets the condition of form below:
Table 7
Table 8
In addition, f1=2.30mm; F2=1325.6mm; F3=-2.20mm; F4=1.86mm and f=2.0mm; TTL=2.52mm; Stop value is: 2.2.
Figure 17 be the pick-up lens of embodiment 4 axle on chromaticity difference diagram (mm), Figure 18 is the astigmatism figure (mm) of the pick-up lens of embodiment 4, Figure 19 is the distortion figure (%) of the pick-up lens of embodiment 4, Figure 20 is the pick-up lens ratio chromatism, figure (um) of embodiment 4, visible, the aberration of pick-up lens is effectively controlled.
Embodiment 5
In embodiment 5, pick-up lens meets the condition of form below:
Table 9
Table 10
In addition, f1=2.18mm; F2=-16.49mm; F3=-1.48mm; F4=1.28mm and f=2.18mm; TTL=2.77mm; Stop value is: 2.2.
Figure 22 be the pick-up lens of embodiment 5 axle on chromaticity difference diagram (mm), Figure 23 is the astigmatism figure (mm) of the pick-up lens of embodiment 5, Figure 24 is the distortion figure (%) of the pick-up lens of embodiment 5, Figure 25 is the pick-up lens ratio chromatism, figure (um) of embodiment 5, visible, the aberration of pick-up lens is effectively controlled.
Embodiment 6
In embodiment 6, pick-up lens meets the condition of form below:
Table 11
Table 12
In addition, f1=1.94mm; F2=-9.06mm; F3=-1.53mm; F4=1.37mm and f=2.15mm; TTL=2.69mm; Stop value is: 2.2.
Figure 27 be the pick-up lens of embodiment 6 axle on chromaticity difference diagram (mm), Figure 28 is the astigmatism figure (mm) of the pick-up lens of embodiment 6, Figure 29 is the distortion figure (%) of the pick-up lens of embodiment 6, Figure 30 is the pick-up lens ratio chromatism, figure (um) of embodiment 6, visible, the aberration of pick-up lens is effectively controlled.
Embodiment 7
In embodiment 7, pick-up lens meets the condition of form below:
Table 13
Table 14
In addition, f1=2.19mm; F2=-41.51mm; F3=-2.85mm; F4=2.11mm and f=1.95mm; TTL=2.52mm; Stop value is: 2.2.
Figure 32 be the pick-up lens of embodiment 7 axle on chromaticity difference diagram (mm), Figure 33 is the astigmatism figure (mm) of the pick-up lens of embodiment 7, Figure 34 is the distortion figure (%) of the pick-up lens of embodiment 7, Figure 35 is the pick-up lens ratio chromatism, figure (um) of embodiment 7, visible, the aberration of pick-up lens is effectively controlled.
In embodiment 1-7, each conditional meets the condition of form below:
| Formula embodiment | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| T12/T23 | 1.45 | 1.35 | 1.2 | 1.1 | 0.96 | 1.15 | 1.73 |
| f1/f3 | -0.91 | -1.25 | -0.91 | -1.04 | -1.48 | -1.27 | -0.77 |
| (R7+R8)/(R7-R8) | -5.94 | -5.38 | -6.31 | -6.13 | -3.34 | -3.67 | -6.48 |
| |f12/f34| | 0.19 | 0.11 | 0.05 | 0.11 | 0.13 | 0.07 | 0.26 |
| f/f3 | -0.82 | -1.18 | -0.96 | -0.91 | -1.48 | -1.4 | -0.68 |
| (R5+R6)/(R5-R6) | -2.7 | -1.75 | -2.71 | -2.57 | -1.44 | -1.5 | -3.22 |
| f/f1 | 0.9 | 0.95 | 1.05 | 0.87 | 1 | 1.11 | 0.89 |
| f/f4 | 1.03 | 1.2 | 1.1 | 1.07 | 1.7 | 1.57 | 0.92 |
| TTL/ImgH | 1.51 | 1.47 | 1.52 | 1.44 | 1.59 | 1.54 | 1.44 |
| semi-FOV | 39.7 | 40.2 | 39.8 | 40.8 | 38.2 | 38.5 | 41.4 |
In the description of this instructions, specific features, structure, refractive index/Abbe number or feature that the description of reference term " embodiment ", " some embodiments ", " exemplary embodiment ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with described embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, refractive index/Abbe number or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and aim, scope of the present utility model is by claim and equivalents thereof.
Claims (11)
1. a pick-up lens, is characterized in that comprising successively from the object side to image side:
Have the first lens of positive refracting power, its thing side surface is convex surface and is aspheric surface;
There are the second lens of refracting power;
Have the 3rd lens of negative refracting power, its thing side surface is concave surface and surface, image side is convex surface, and is aspheric surface;
Have the 4th lens of positive refracting power, its thing side surface is convex surface and surface, image side is concave surface, is aspheric surface, and at least one face exists at least one point of inflexion;
Described camera lens meets following relational expression:
0.6<T12/T23<2.0；
-1.7<f1/f3<-0.7; And
-8<(R7+R8)/(R7-R8)<-3；
Wherein, T12 is described first lens and the spacing of described second lens on the optical axis of described pick-up lens, T23 is described second lens and the spacing of described 3rd lens on the optical axis of described pick-up lens, f1 is the focal length of described first lens, f3 is the focal length of described 3rd lens, R7 is the radius-of-curvature of described 4th lens thing side surface, and R8 is the radius-of-curvature on described 4th surface, lens image side.
2. pick-up lens as claimed in claim 1, it is characterized in that, described first lens, described second lens, described 3rd lens and described 4th lens are all made of plastics.
3. pick-up lens as claimed in claim 1, it is characterized in that, described pick-up lens also comprises diaphragm, and described diaphragm is arranged between object and the second lens.
4. pick-up lens as claimed in claim 1, it is characterized in that, described pick-up lens meets following relational expression:
|f12/f34|<0.4；
Wherein, f12 is the combined focal length of described first lens and described second lens, and f34 is the combined focal length of described 3rd lens and described 4th lens.
5. pick-up lens as claimed in claim 1, it is characterized in that, described pick-up lens meets following relational expression:
-1.5<f/f3<-0.5; And
-4<(R5+R6)/(R5-R6)<0；
Wherein, f is the effective focal length of described pick-up lens, and R5 is the radius-of-curvature of the thing side surface of described 3rd lens, and R6 is the radius-of-curvature on the surface, image side of described 3rd lens.
6. pick-up lens as claimed in claim 1, it is characterized in that, described pick-up lens meets following relational expression:
0.5<f/f1<1.3；
Wherein, f is the effective focal length of described pick-up lens.
7. pick-up lens as claimed in claim 1, it is characterized in that, described pick-up lens meets following relational expression:
0.9<f/f4<2.0；
Wherein, f is the effective focal length of described pick-up lens, and f4 is the focal length of described 4th lens.
8. pick-up lens as claimed in claim 1, it is characterized in that, described pick-up lens meets following relational expression:
TTL/ImgH<1.7；
Wherein, TTL is the overall length of described pick-up lens, ImgH be described pick-up lens imaging surface on the half of effective pixel area diameter.
9. pick-up lens as claimed in claim 1, it is characterized in that, described pick-up lens meets following relational expression:
37°<semi-FOV<42°；
Wherein, semi-FOV is the half at described pick-up lens maximum field of view angle.
10. the pick-up lens as described in any one of claim 1-9, is characterized in that, the surface, image side of described first lens is concave surface.
11. pick-up lenss as claimed in claim 10, it is characterized in that, described second lens have negative refracting power, and its thing side surface is concave surface, and surface, image side is convex surface.
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| CN201520043024.5U CN204389775U (en) | 2015-01-21 | 2015-01-21 | Pick-up lens |
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| CN201520043024.5U CN204389775U (en) | 2015-01-21 | 2015-01-21 | Pick-up lens |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104597587A (en) * | 2015-01-21 | 2015-05-06 | 浙江舜宇光学有限公司 | Pick-up camera lens |
| CN109814235A (en) * | 2018-12-28 | 2019-05-28 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
| US10302916B2 (en) | 2016-12-15 | 2019-05-28 | Largan Precision Co., Ltd. | Optical photographing lens system, image capturing apparatus and electronic device |
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