CN205049806U - Telephoto lens - Google Patents
Telephoto lens Download PDFInfo
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- CN205049806U CN205049806U CN201520807986.3U CN201520807986U CN205049806U CN 205049806 U CN205049806 U CN 205049806U CN 201520807986 U CN201520807986 U CN 201520807986U CN 205049806 U CN205049806 U CN 205049806U
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Abstract
The utility model discloses a telephoto lens, it is included by thing side to picture side in proper order: have the first lens of positive refracting power, the thing side of first lens is the convex surface, have the second lens of negative refracting power, the picture side of second lens is the concave surface, the third lens that have the refracting power, the fourth lens that have negative refracting power, have the 5th lens of refracting power, the thing side of the 5th lens is the concave surface, and the picture side of the 5th lens is the convex surface, telephoto lens satisfies following relational expression: 0.75< TTLf< 1.0 0.45< F2f45< 1.0 wherein, TTL is the epaxial distance of thing side to the imaging surface of first lens, and f is telephoto lens's effective focal length, F2 is the effective focal length of second lens, and f45 is the combined focal length of fourth lens and the 5th lens. The telephoto lens who satisfies above -mentioned configuration has the little depth of field and great enlargement ratio, be favorable to shortening system's length of camera lens simultaneously, reduce the tolerance sensitiveness of camera lens. Collocation wide -angle lens is favorable to obtaining clear image.
Description
Technical field
The utility model relates to a kind of camera technique field, particularly relates to a kind of small-sized telephoto lens.
Background technology
Along with charge coupled device (charge-coupleddevice, and CMOS (Complementary Metal Oxide Semiconductor) (complementarymetal-oxidesemiconductor CCD), CMOS) performance of imageing sensor improves and size reduction, and corresponding pick-up lens also needs the requirement meeting high image quality and miniaturization.
Current people require more and more higher to the pick-up lens of portable type electronic product, and general pick-up lens meets the requirement of optical property by increasing number of lenses, although improve image quality by a more lens piece number, be unfavorable for the miniaturization of camera lens.In addition, in order to obtain the image of more wide viewing angle, adopting wide-angle optics at present, being not suitable for taking by amplifying comparatively far object, being unfavorable for obtaining image clearly.
Utility model content
The utility model embodiment is intended at least to solve one of technical matters existed in prior art.For this reason, the utility model embodiment needs to provide a kind of telephoto lens.
A kind of telephoto lens, is comprised to image side successively by thing side:
Have the first lens of positive refracting power, the thing side of these the first lens is convex surface;
Have the second lens of negative refracting power, the face, image side of these the second lens is concave surface;
There are the 3rd lens of refracting power;
There are the 4th lens of negative refracting power;
Have the 5th lens of refracting power, the thing side of the 5th lens is concave surface, and the face, image side of the 5th lens is convex surface;
This telephoto lens meets following relationship:
0.75<TTL/f<1.0；
0.45<f2/f45<1.0；
Wherein, TTL be the thing side of these the first lens to distance on the axle of imaging surface, f is the effective focal length of this telephoto lens; F2 is the effective focal length of these the second lens, and f45 is the combined focal length of the 4th lens and the 5th lens.
The telephoto lens meeting above-mentioned configuration can ensure the focal length characteristic of camera lens, has the little depth of field and larger enlargement ratio; Be conducive to the system length shortening camera lens simultaneously, reduce the tolerance sensitivity of camera lens.Collocation wide-angle lens, has larger enlargement ratio and higher resolution, is conducive to obtaining image clearly when auto-focusing.
In one embodiment, this telephoto lens meets following relationship :-2.0<f4/f<-0.6;
Wherein, f4 is the effective focal length of the 4th lens.
In one embodiment, this telephoto lens meets following relationship :-2.5<SAG42/CT4<-1.2;
Wherein, SAG42 is the rise in the face, image side of the 4th lens, and CT4 is the center thickness of the 4th lens.
In one embodiment, this telephoto lens meets following relationship: 0<f1/f<0.5;
Wherein, f1 is the effective focal length of these the first lens.
In one embodiment, this telephoto lens meets following relationship: 0<f2/f4<1;
Wherein, f4 is the effective focal length of the 4th lens.
In one embodiment, this telephoto lens meets following relationship: | (R9-R10)/(R9+R10) | <1;
Wherein, R9 is the radius-of-curvature of the thing side of the 5th lens, and R10 is the radius-of-curvature in the face, image side of the 5th lens.
In one embodiment, this telephoto lens meets following relationship :-10< (R1+R4)/(R1-R4) <-3;
Wherein, R1 is the radius-of-curvature of the thing side of these the first lens, and R4 is the radius-of-curvature in the face, image side of these the second lens.
In one embodiment, this telephoto lens comprises a diaphragm, and this diaphragm is arranged between object and this second lens.
In one embodiment, in this telephoto lens, the face, image side of the 3rd lens is concave surface, and the thing side of the 4th lens is concave surface.
The additional aspect of the utility model embodiment and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by the practice of the utility model embodiment.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the utility model embodiment and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of the telephoto lens of embodiment 1;
Fig. 2 be the telephoto lens of embodiment 1 axle on chromaticity difference diagram (mm); Fig. 3 is the astigmatism figure (mm) of the telephoto lens of embodiment 1; Fig. 4 is the distortion figure (%) of the telephoto lens of embodiment 1; Fig. 5 is the ratio chromatism, figure (um) of the telephoto lens of embodiment 1;
Fig. 6 is the structural representation of the telephoto lens of embodiment 2;
Fig. 7 be the telephoto lens of embodiment 2 axle on chromaticity difference diagram (mm); Fig. 8 is the astigmatism figure (mm) of the telephoto lens of embodiment 2; Fig. 9 is the distortion figure (%) of the telephoto lens of embodiment 2; Figure 10 is the ratio chromatism, figure (um) of the telephoto lens of embodiment 2;
Figure 11 is the structural representation of the telephoto lens of embodiment 3;
Figure 12 be the telephoto lens of embodiment 3 axle on chromaticity difference diagram (mm); Figure 13 is the astigmatism figure (mm) of the telephoto lens of embodiment 3; Figure 14 is the distortion figure (%) of the telephoto lens of embodiment 3; Figure 15 is the ratio chromatism, figure (um) of the telephoto lens of embodiment 3;
Figure 16 is the structural representation of the telephoto lens of embodiment 4;
Figure 17 be the telephoto lens of embodiment 4 axle on chromaticity difference diagram (mm); Figure 18 is the astigmatism figure (mm) of the telephoto lens of embodiment 4; Figure 19 is the distortion figure (%) of the telephoto lens of embodiment 4; Figure 20 is the ratio chromatism, figure (um) of the telephoto lens of embodiment 4;
Figure 21 is the structural representation of the telephoto lens of embodiment 5;
Figure 22 be the telephoto lens of embodiment 5 axle on chromaticity difference diagram (mm); Figure 23 is the astigmatism figure (mm) of the telephoto lens of embodiment 5; Figure 24 is the distortion figure (%) of the telephoto lens of embodiment 5; Figure 25 is the ratio chromatism, figure (um) of the telephoto lens of embodiment 5.
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 discussed various embodiment and/or relation between 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.
Refer to Fig. 1, a kind of telephoto lens of the utility model preferred embodiment, is comprised to image side successively by thing side:
Have the first lens E1 of positive refracting power, the thing side S1 of the first lens E1 is convex surface;
Have the second lens E2 of negative refracting power, face, the image side S4 of the second lens E2 is concave surface;
There is the 3rd lens E3 of refracting power;
There is the 4th lens E4 of negative refracting power;
Have the 5th lens E5 of refracting power, the thing side S9 of the 5th lens E5 is concave surface, and face, the image side S10 of the 5th lens E5 is convex surface;
This telephoto lens meets following relationship:
0.75<TTL/f<1.0；
0.45<f2/f45<1.0；
Wherein, TTL be the thing side S1 to imaging surface S13 of these first lens E1 axle on distance, f is the effective focal length of this telephoto lens; F2 is the effective focal length of the second lens E2, and f45 is the combined focal length of the 4th lens E4 and the 5th lens E5.
The telephoto lens meeting above-mentioned configuration can ensure the focal length characteristic of camera lens, has the little depth of field and larger enlargement ratio; Be conducive to the system length shortening camera lens simultaneously, reduce the tolerance sensitivity of camera lens.Collocation wide-angle lens, has larger enlargement ratio and higher resolution, is conducive to obtaining image clearly when auto-focusing.
Preferably, telephoto lens meets following relationship :-2.0<f4/f<-0.6;
Wherein, f4 is the effective focal length of the 4th lens E4, and f is the effective focal length of this telephoto lens.
The telephoto lens meeting above formula requirement is conducive to the focal length characteristic ensureing camera lens, makes that the field angle of this camera lens is less and focal length is larger.
Preferably, telephoto lens meets following relationship :-2.5<SAG42/CT4<-1.2;
Wherein, SAG42 is the rise of face, the image side S8 of the 4th lens E4, and CT4 is the center thickness of the 4th lens E4.
The telephoto lens meeting above formula requirement can effectively reduce the incident angle of chief ray on imaging surface S13, has higher chip matching degree.
Preferably, telephoto lens meets following relationship: 0<f1/f<0.5;
Wherein, f1 is the effective focal length of the first lens E1, and f is the effective focal length of this telephoto lens.
While the telephoto lens meeting above formula requirement is conducive to taking into account focal length characteristic, ensure the miniaturization of camera lens.
Preferably, telephoto lens meets following relationship: 0<f2/f4<1;
Wherein, f2 is the effective focal length of the second lens E2, and f4 is the effective focal length of the 4th lens E4.
The telephoto lens meeting above formula requirement is conducive to the reasonable distribution of focal power, effectively revises various aberration, improves the resolution of camera lens.
Preferably, telephoto lens meets following relationship: | (R9-R10)/(R9+R10) | <1;
Wherein, R9 is the radius-of-curvature of the thing side S9 of the 5th lens E5, and R10 is the radius-of-curvature of face, the image side S10 of the 5th lens E5.
The telephoto lens meeting above formula requirement can make lens thickness relatively well-balanced, makes center more even to edge entirety picture element.
Preferably, telephoto lens meets following relationship :-10< (R1+R4)/(R1-R4) <-3;
Wherein, R1 is the radius-of-curvature of the thing side S1 of the first lens E1, and R4 is the radius-of-curvature of face, the image side S4 of the second lens E2.
The telephoto lens meeting above formula requirement is conducive to the miniaturization of camera lens, and effectively promotes the resolution of camera lens.
Preferably, telephoto lens comprises a diaphragm STO, and diaphragm STO is arranged between object and the second lens E2.
Preferably, face, the image side S6 of the 3rd lens E3 in telephoto lens is concave surface, and the thing side S7 of the 4th lens E4 is concave surface.
Meet the above requirement to lens shape, telephoto lens can reduce the tolerance sensitivity of system further, improves the image quality of camera lens; Meanwhile, effectively reduce the system length of camera lens, make its structure relative compact.
During imaging, light images in imaging surface S13 through after five lens after having the optical filter E6 of thing side surface S11 and surface, image side S12.
In some embodiments, the first lens E1, the second lens E2, the 3rd lens E3, the 4th lens E4 and the 5th lens E5 are non-spherical lens.
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.
Embodiment 1
Incorporated by reference to Fig. 1 ~ Fig. 5, in embodiment 1, telephoto lens meets the condition of table 1 ~ 2 below:
Table 1
| Surface number | Surface type | Radius-of-curvature | Thickness | Refractive index/Abbe number | Circular cone coefficient |
| OBJ | Sphere | Infinite | Infinite | -- | -- |
| STO | Sphere | Infinite | -0.5219 | -- | -- |
| S1 | Aspheric surface | 1.4530 | 0.7920 | 1.54/56.1 | -0.1524 |
| S2 | Aspheric surface | -61.3487 | 0.0863 | -- | -47.5289 |
| S3 | Aspheric surface | 5.6451 | 0.2500 | 1.64/23.5 | 16.0944 |
| S4 | Aspheric surface | 1.9334 | 0.6655 | -- | -10.4333 |
| S5 | Aspheric surface | -14.4941 | 0.2500 | 1.64/23.5 | -99.0000 |
| S6 | Aspheric surface | 23.9992 | 1.2694 | -- | -99.0000 |
| S7 | Aspheric surface | -3.5420 | 0.2500 | 1.54/56.1 | -50.0106 |
| S8 | Aspheric surface | 21.2954 | 0.2730 | -- | 3.3761 |
| S9 | Aspheric surface | -57.9055 | 0.7438 | 1.64/23.5 | 14.2851 |
| S10 | Aspheric surface | -10.0187 | 0.3424 | -- | 20.9008 |
| S11 | Sphere | Infinite | 0.2100 | 1.52/64.2 | -- |
| S12 | Sphere | Infinite | 0.2956 | -- | -- |
| S13 | Sphere | Infinite | -- | -- | -- |
Table 2
In addition, f1=2.61mm; F2=-4.69mm; F3=-13.98mm; F4=-5.54mm; F5=18.68mm; And f=6.30mm; HFOV=20.6 °; TTL=5.43mm; Fno is: 2.8.
Embodiment 2
Incorporated by reference to Fig. 6 ~ Figure 10, in embodiment 2, telephoto lens meets the condition of table 3 ~ 4 below:
Table 3
| Surface number | Surface type | Radius-of-curvature | Thickness | Refractive index/Abbe number | Circular cone coefficient |
| OBJ | Sphere | Infinite | Infinite | -- | -- |
| STO | Sphere | Infinite | -0.4255 | -- | -- |
| S1 | Aspheric surface | 1.2624 | 0.7078 | 1.54/56.1 | -0.1364 |
| S2 | Aspheric surface | -49.0934 | 0.0426 | -- | 50.0000 |
| S3 | Aspheric surface | 6.1196 | 0.2500 | 1.64/23.5 | -7.1520 |
| S4 | Aspheric surface | 1.8979 | 0.2668 | -- | -10.3578 |
| S5 | Aspheric surface | 67.6202 | 0.2500 | 1.64/23.5 | 50.0000 |
| S6 | Aspheric surface | 6.8758 | 1.2479 | -- | 49.2533 |
| S7 | Aspheric surface | -2.8440 | 0.2500 | 1.54/56.1 | -49.9298 |
| S8 | Aspheric surface | -8.6904 | 0.2314 | -- | 3.3761 |
| S9 | Aspheric surface | -5.5158 | 0.6335 | 1.64/23.5 | 4.7734 |
| S10 | Aspheric surface | -6.3996 | 0.3424 | -- | -99.0000 |
| S11 | Sphere | Infinite | 0.2100 | 1.52/64.2 | -- |
| S12 | Sphere | Infinite | 0.2976 | -- | -- |
| S13 | Sphere | Infinite | -- | -- | -- |
Table 4
In addition, f1=2.27mm; F2=-4.37mm; F3=-11.89mm; F4=-7.86mm; F5=-86.18mm; And f=5.35mm; HFOV=23.8 °; TTL=4.73mm; Fno is: 2.8.
Embodiment 3
Incorporated by reference to Figure 11 ~ Figure 15, in embodiment 3, telephoto lens meets the condition of table 5 ~ 6 below:
Table 5
| Surface number | Surface type | Radius-of-curvature | Thickness | Refractive index/Abbe number | Circular cone coefficient |
| OBJ | Sphere | Infinite | Infinite | -- | -- |
| STO | Sphere | Infinite | -0.4265 | -- | -- |
| S1 | Aspheric surface | 1.2591 | 0.7060 | 1.54/56.1 | -0.1358 |
| S2 | Aspheric surface | 1110.1565 | 0.0472 | -- | -99.0000 |
| S3 | Aspheric surface | 6.2705 | 0.2500 | 1.64/23.5 | -7.4058 |
| S4 | Aspheric surface | 2.0047 | 0.2637 | -- | -11.6829 |
| S5 | Aspheric surface | 112.7909 | 0.2500 | 1.64/23.5 | 50.0000 |
| S6 | Aspheric surface | 6.8378 | 1.2525 | -- | 46.4590 |
| S7 | Aspheric surface | -2.8147 | 0.2500 | 1.54/56.1 | -49.9298 |
| S8 | Aspheric surface | -7.9705 | 0.2304 | -- | 3.3761 |
| S9 | Aspheric surface | -5.3069 | 0.6302 | 1.64/23.5 | 4.6843 |
| S10 | Aspheric surface | -6.3011 | 0.3424 | -- | -99.0000 |
| S11 | Sphere | Infinite | 0.2100 | 1.52/64.2 | -- |
| S12 | Sphere | Infinite | 0.2976 | -- | -- |
| S13 | Sphere | Infinite | -- | -- | -- |
Table 6
In addition, f1=2.31mm; F2=-4.68mm; F3=-11.30mm; F4=-8.11mm; F5=-69.43mm; And f=5.35mm; HFOV=25.0 °; TTL=4.73mm; Fno is: 2.8.
Embodiment 4
Incorporated by reference to Figure 16 ~ Figure 20, in embodiment 4, telephoto lens meets the condition of table 7 ~ 8 below:
Table 7
| Surface number | Surface type | Radius-of-curvature | Thickness | Refractive index/Abbe number | Circular cone coefficient |
| OBJ | Sphere | Infinite | Infinite | -- | -- |
| STO | Sphere | Infinite | -0.4332 | -- | -- |
| S1 | Aspheric surface | 1.2643 | 0.7149 | 1.54/56.1 | -0.1180 |
| S2 | Aspheric surface | -19.6213 | 0.1072 | -- | -99.0000 |
| S3 | Aspheric surface | -1158.6207 | 0.2500 | 1.64/23.5 | -47.0351 |
| S4 | Aspheric surface | 2.0320 | 0.2536 | -- | -10.9795 |
| S5 | Aspheric surface | 6.8787 | 0.2500 | 1.64/23.5 | -99.0000 |
| S6 | Aspheric surface | 6.8482 | 1.1640 | -- | -4.2111 |
| S7 | Aspheric surface | -2.7129 | 0.2500 | 1.54/56.1 | -49.9298 |
| S8 | Aspheric surface | -8.8222 | 0.2879 | -- | 3.3761 |
| S9 | Aspheric surface | -5.3097 | 0.6025 | 1.64/23.5 | 5.5313 |
| S10 | Aspheric surface | -6.4666 | 0.3424 | -- | -99.0000 |
| S11 | Sphere | Infinite | 0.2100 | 1.52/64.2 | -- |
| S12 | Sphere | Infinite | 0.2976 | -- | -- |
| S13 | Sphere | Infinite | -- | -- | -- |
Table 8
In addition, f1=2.20mm; F2=-3.15mm; F3=1082.9mm; F4=-7.28mm; F5=-57.85mm; And f=5.35mm; HFOV=26.3 °; TTL=4.73mm; Fno is: 2.8.
Embodiment 5
Incorporated by reference to Figure 21 ~ Figure 25, in embodiment 5, telephoto lens meets the condition of table 9 ~ 10 below:
Table 9
| Surface number | Surface type | Radius-of-curvature | Thickness | Refractive index/Abbe number | Circular cone coefficient |
| OBJ | Sphere | Infinite | Infinite | -- | -- |
| S1 | Aspheric surface | 1.2184 | 0.7293 | 1.54/56.1 | -0.1421 |
| S2 | Aspheric surface | -140.7467 | 0.0460 | -- | -99.0000 |
| STO | Sphere | Infinite | 0.0992 | -- | -- |
| S3 | Aspheric surface | 71.3169 | 0.2504 | 1.64/23.5 | -47.0351 |
| S4 | Aspheric surface | 2.1371 | 0.2184 | -- | -8.8219 |
| S5 | Aspheric surface | 8.2161 | 0.2505 | 1.64/23.5 | -99.0000 |
| S6 | Aspheric surface | 5.6921 | 1.1098 | -- | -3.7804 |
| S7 | Aspheric surface | -2.6273 | 0.2500 | 1.54/56.1 | -49.1018 |
| S8 | Aspheric surface | -7.4537 | 0.3148 | -- | 3.3761 |
| S9 | Aspheric surface | -4.9692 | 0.5115 | 1.64/23.5 | 5.0044 |
| S10 | Aspheric surface | -14.9211 | 0.2674 | -- | -99.0000 |
| S11 | Sphere | Infinite | 0.2100 | 1.52/64.2 | -- |
| S12 | Sphere | Infinite | 0.2226 | -- | -- |
| S13 | Sphere | Infinite | -- | -- | -- |
Table 10
In addition, f1=2.22mm; F2=-3.42mm; F3=-29.91mm; F4=-7.57mm; F5=-11.80mm; And f=5.34mm; HFOV=24.0 °; TTL=4.48mm; Fno is: 2.8.
In embodiment 1 ~ 5, each conditional meets the condition of form below:
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " 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, material or feature can combine in an appropriate manner in any one or more embodiment or example.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In description of the present utility model, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment, revises, replace and modification in scope of the present utility model.
Claims (9)
1. a telephoto lens, is characterized in that, is comprised successively to image side by thing side:
Have the first lens of positive refracting power, the thing side of these the first lens is convex surface;
Have the second lens of negative refracting power, the face, image side of these the second lens is concave surface;
There are the 3rd lens of refracting power;
There are the 4th lens of negative refracting power;
Have the 5th lens of refracting power, the thing side of the 5th lens is concave surface, and the face, image side of the 5th lens is convex surface;
This telephoto lens meets following relationship:
0.75<TTL/f<1.0；
0.45<f2/f45<1.0；
Wherein, TTL be the thing side of these the first lens to distance on the axle of imaging surface, f is the effective focal length of this telephoto lens; F2 is the effective focal length of these the second lens, and f45 is the combined focal length of the 4th lens and the 5th lens.
2. telephoto lens as claimed in claim 1, it is characterized in that, this telephoto lens meets following relationship:
-2.0<f4/f<-0.6；
Wherein, f4 is the effective focal length of the 4th lens.
3. telephoto lens as claimed in claim 1, it is characterized in that, this telephoto lens meets following relationship:
-2.5<SAG42/CT4<-1.2；
Wherein, SAG42 is the rise in the face, image side of the 4th lens, and CT4 is the center thickness of the 4th lens.
4. telephoto lens as claimed in claim 1, it is characterized in that, this telephoto lens meets following relationship:
0<f1/f<0.5；
Wherein, f1 is the effective focal length of these the first lens.
5. telephoto lens as claimed in claim 1, it is characterized in that, this telephoto lens meets following relationship:
0<f2/f4<1；
Wherein, f4 is the effective focal length of the 4th lens.
6. telephoto lens as claimed in claim 1, it is characterized in that, this telephoto lens meets following relationship:
|(R9-R10)/(R9+R10)|<1；
Wherein, R9 is the radius-of-curvature of the thing side of the 5th lens, and R10 is the radius-of-curvature in the face, image side of the 5th lens.
7. telephoto lens as claimed in claim 1, it is characterized in that, this telephoto lens meets following relationship:
-10<(R1+R4)/(R1-R4)<-3；
Wherein, R1 is the radius-of-curvature of the thing side of these the first lens, and R4 is the radius-of-curvature in the face, image side of these the second lens.
8. the telephoto lens according to any one of claim 1 ~ 7, is characterized in that, this telephoto lens comprises a diaphragm, and this diaphragm is arranged between object and this second lens.
9. telephoto lens as claimed in claim 8, it is characterized in that, in this telephoto lens, the face, image side of the 3rd lens is concave surface, and the thing side of the 4th lens is concave surface.
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| CN201520807986.3U CN205049806U (en) | 2015-10-19 | 2015-10-19 | Telephoto lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520807986.3U CN205049806U (en) | 2015-10-19 | 2015-10-19 | Telephoto lens |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259636A (en) * | 2015-10-19 | 2016-01-20 | 浙江舜宇光学有限公司 | Long focal length lens |
| TWI614522B (en) * | 2016-08-29 | 2018-02-11 | 玉晶光電股份有限公司 | Optical lens assembly |
| CN109348101A (en) * | 2018-10-17 | 2019-02-15 | 浙江舜宇光学有限公司 | Based on double filming apparatus for taking the photograph lens group and method |
| CN110221411A (en) * | 2019-06-30 | 2019-09-10 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
| US10545315B2 (en) | 2017-03-31 | 2020-01-28 | Largan Precision Co., Ltd. | Optical imaging lens system, image capturing unit and electronic device |
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| US11327275B2 (en) | 2016-11-24 | 2022-05-10 | Largan Precision Co., Ltd. | Photographing lens assembly, image capturing unit and electronic device |
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2015
- 2015-10-19 CN CN201520807986.3U patent/CN205049806U/en not_active Withdrawn - After Issue
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| CN105259636A (en) * | 2015-10-19 | 2016-01-20 | 浙江舜宇光学有限公司 | Long focal length lens |
| TWI614522B (en) * | 2016-08-29 | 2018-02-11 | 玉晶光電股份有限公司 | Optical lens assembly |
| US10324273B2 (en) | 2016-08-29 | 2019-06-18 | Genius Electronic Optical (Xiamen) Co., Ltd. | Optical lens set |
| US11327275B2 (en) | 2016-11-24 | 2022-05-10 | Largan Precision Co., Ltd. | Photographing lens assembly, image capturing unit and electronic device |
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| US10545315B2 (en) | 2017-03-31 | 2020-01-28 | Largan Precision Co., Ltd. | Optical imaging lens system, image capturing unit and electronic device |
| US10921557B2 (en) | 2017-04-12 | 2021-02-16 | Zhejiang Sunny Optical Co., Ltd | Optical imaging system of camera lens assembly |
| CN109348101A (en) * | 2018-10-17 | 2019-02-15 | 浙江舜宇光学有限公司 | Based on double filming apparatus for taking the photograph lens group and method |
| CN110221411A (en) * | 2019-06-30 | 2019-09-10 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
| CN110221411B (en) * | 2019-06-30 | 2021-06-22 | 瑞声光学解决方案私人有限公司 | Image pickup optical lens |
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