CN116774415A - Large aperture photographic lens with low respiratory effect - Google Patents
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- CN116774415A CN116774415A CN202311040352.5A CN202311040352A CN116774415A CN 116774415 A CN116774415 A CN 116774415A CN 202311040352 A CN202311040352 A CN 202311040352A CN 116774415 A CN116774415 A CN 116774415A
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- 230000000241 respiratory effect Effects 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 3
- 238000012634 optical imaging Methods 0.000 abstract description 2
- 230000004075 alteration Effects 0.000 description 27
- 230000003287 optical effect Effects 0.000 description 13
- 230000029058 respiratory gaseous exchange Effects 0.000 description 10
- 238000003384 imaging method Methods 0.000 description 8
- 206010010071 Coma Diseases 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 206010073261 Ovarian theca cell tumour Diseases 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 208000001644 thecoma Diseases 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 201000009310 astigmatism Diseases 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000005304 optical glass Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/163—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group
- G02B15/167—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/143—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only
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Abstract
The invention relates to the technical field of optical imaging, in particular to a large-aperture photographic lens with low respiratory effect. The lens system comprises a first lens group, a second lens group and a third lens group which are sequentially arranged from an object side to an image side; the first lens group consists of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens; the second lens group consists of an eighth lens, a ninth lens and a tenth lens which are sequentially arranged from the object side to the image side, and the third lens group consists of an eleventh lens, a twelfth lens and a thirteenth lens which are sequentially arranged from the object side to the image side; the focal length between the first lens group and the second lens group satisfies the following relationship: 1.30< f1/f2<1.55; wherein f1 is the focal length of the first lens group, and f2 is the focal length of the second lens group. The invention provides a photographic lens with low respiratory effect and large aperture, which can focus in a floating way, has low respiratory effect and is provided with a large aperture.
Description
Technical Field
The invention relates to the technical field of optical imaging, in particular to a large-aperture photographic lens with low respiratory effect.
Background
In recent years, a lens interchangeable digital full-frame camera with an imaging size of 24mm×36mm has basically replaced the conventional film camera. With the improvement of CMOS imaging chip performance and the advent of new functions, such as the development of resolution from megapixels to 3 megapixels and higher, the appearance of on-chip pixel peak focusing functions, and the like. Therefore, after the reflector and the peak focusing module matched with the reflector are removed from the traditional single-lens reflex lens camera, the optical back focal length of the lens can be greatly reduced, so that the overall imaging resolution is improved, and meanwhile, the focusing function of the original phase focusing module is realized by the phase focusing function on a CMOS (complementary metal oxide semiconductor) chip, so that the novel reflector-free camera is produced, or the novel reflector-free camera is called a micro single camera or a special micro camera.
Currently, with the new demands of live webcasting, VLo (video weblog), and the like, the lens needs to be quiet and rapid in focusing, and the respiratory effect needs to be reduced to enable the picture to keep a consistent field angle in the focusing point change. However, the lens on the market generally has the problems of insufficient aperture and weak low respiratory effect. In order to match new cameras and new requirements for lenses, photographic lenses also need to be developed synchronously.
Disclosure of Invention
The invention aims at: provided is a low-respiratory-effect large-aperture photographic lens capable of floating focusing, low-respiratory-effect, and large aperture.
The invention is realized by the following technical scheme: the utility model provides a big light ring photographic lens of low respiratory effect which characterized in that: the lens system comprises a first lens group, a second lens group and a third lens group which are sequentially arranged from an object side to an image side;
the first lens group is fixedly arranged and consists of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged from an object side to an image side, wherein the focal power of the first lens is negative, the second lens and the third lens group form a first bonding lens group with positive focal power, the focal power of the fourth lens is positive, the focal power of the fifth lens is positive, and the sixth lens and the seventh lens form a second bonding lens group with positive focal power;
the second lens group is movable and adjustable and is used for compensating working distance change, and the lens system consists of an eighth lens, a ninth lens and a tenth lens which are sequentially arranged from an object side to an image side, wherein the focal power of the eighth lens is negative, the focal power of the ninth lens is positive, and the focal power of the tenth lens is positive; the system diaphragm is arranged between the first lens group and the second lens group;
the third lens group is fixedly arranged and consists of an eleventh lens, a twelfth lens and a thirteenth lens which are sequentially arranged from the object side to the image side, the eleventh lens and the twelfth lens form a third cemented lens group with positive focal power, and the focal power of the thirteenth lens is negative;
the focal length between the first lens group and the second lens group satisfies the following relationship:
1.30 < f1/ f2< 1.55；
wherein f1 is the focal length of the first lens group, and f2 is the focal length of the second lens group. When f1/f 2> 1.55, the near object distance field angle will be significantly less than the infinity field angle; when f1/f2< 1.30, the near object distance field angle will be significantly greater than the infinity field angle.
As a further improvement, the focal length between the second lens group and the system satisfies the following relationship:
1.1<f2/fs<1.3；
wherein fs is the system focal length.
When f2/fs is more than 1.3, the focal length of the focusing group is longer, the spherical aberration and the coma aberration of the system are reduced when the object distance is near, the image quality is improved, but the total length of the system tends to be longer, and the lens is not beneficial to compactness and miniaturization; when f2/fs is less than 1.1, the total length of the system can be made shorter, but aberrations such as spherical aberration, coma aberration and the like can be generated, which is unfavorable for improving the image quality.
In order to better control chromatic aberration of the system, the first lens, the sixth lens and the tenth lens are made of low-dispersion materials;
i.e., vd1>65, vd6>65, vd10>65;
where vd1, vd6, and vd10 represent abbe numbers of the first lens, the sixth lens, and the tenth lens material, respectively.
In order to better control the spherical aberration and the coma aberration of the focusing group and ensure the image quality of the system, the low-respiratory-effect large-aperture photographic lens also satisfies the following relation:
0.4 < |R8f/ fs|< 0.6；
wherein R8f is the radius of curvature of the front surface of the eighth lens, and the front surface is a surface close to the object plane side. When |r8f/fs| >0.6 or |r8f/fs| <0.4, spherical aberration and coma of the focus group become serious, which is detrimental to the lens resolution.
In order to better compensate the field curvature of the lens, the low respiratory effect large aperture photographic lens also satisfies the following relationship:
1.2<|f13/fs|<1.5；
where f13 is the focal length of the thirteenth lens.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention relates to a photographic lens with low respiratory effect and large aperture, which adopts three lens groups, wherein a first lens group is a fixed group, a second lens group for compensating working distance change is a movable group and a fixed third lens group, and through the distribution of the focal power of each optical lens, reasonable optical glass materials are adopted, so that the structural form of a lens system, the refractive index, abbe coefficient and other parameters of the lens are matched with imaging conditions, and further, the spherical aberration, coma aberration, astigmatism, field curvature, chromatic aberration of magnification and position chromatic aberration of the lens system are well corrected, and the photographic lens has good wide working distance applicability.
2. According to the low-respiratory-effect large-aperture photographic lens, when an object is close to the lens, the first lens group is kept motionless, and the second lens group moves towards the object, so that the object can be clearly imaged on an image plane. The floating focusing mode is also beneficial to dust prevention and moisture prevention of the lens.
Drawings
FIG. 1 is a schematic view of an embodiment I with infinite working distance;
FIG. 2 is a schematic view of the structure of the first embodiment when the working distance is 600 mm;
FIG. 3 is a graph of MTF (modulation transfer function) at an infinite working distance according to an embodiment;
FIG. 4 is a graph of MTF (modulation transfer function) at a working distance of 600mm for example one;
FIG. 5 is a schematic diagram of the structure of the second embodiment with infinite working distance;
FIG. 6 is a schematic view of the structure of the second embodiment when the working distance is 200 mm;
FIG. 7 is a graph of MTF (modulation transfer function) at an infinite working distance according to an embodiment II;
FIG. 8 is a graph of MTF (modulation transfer function) at a working distance of 600mm for example two;
fig. 9 is a schematic structural view of the third embodiment with an infinite working distance;
FIG. 10 is a schematic view of the structure of the third embodiment when the working distance is 200 mm;
FIG. 11 is a graph of MTF (modulation transfer function) at an infinite working distance according to an embodiment III;
fig. 12 is a graph of MTF (modulation transfer function) at a working distance of 600mm for example three.
Description of the reference numerals: 1. a first lens group; 11. a first lens; 12. a second lens; 13. a third lens; 14. a fourth lens; 15. a fifth lens; 16. a sixth lens; 17. a seventh lens; 2. a second lens group; 21. an eighth lens; 22. a ninth lens; 23. a tenth lens; 3. a third lens group; 31. an eleventh lens; 32. a twelfth lens; 33. a thirteenth lens; 4. a diaphragm; 5. an image plane.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
example 1
The utility model provides a big light ring photographic lens of low respiratory effect which characterized in that: the lens system comprises a first lens group 1, a second lens group 2 and a third lens group 3 which are sequentially arranged from an object side to an image side;
the first lens group 1 is fixedly arranged, and consists of a first lens 11, a second lens 12, a third lens 13, a fourth lens 14, a fifth lens 15, a sixth lens 16 and a seventh lens 17 which are sequentially arranged from an object side to an image side, wherein the focal power of the first lens 11 is negative, the second lens 12 and the third lens 13 form a first cemented lens group with positive focal power, the focal power of the fourth lens 14 is positive, the focal power of the fifth lens 15 is positive, and the sixth lens 16 and the seventh lens 17 form a second cemented lens group with positive focal power;
the second lens group 2 is movable and adjustable, and is configured to compensate for a change in working distance, and is composed of an eighth lens 21, a ninth lens 22 and a tenth lens 23, which are sequentially arranged from an object side to an image side, wherein optical power of the eighth lens 21 is negative, optical power of the ninth lens 22 is positive, and optical power of the tenth lens 23 is positive; the system diaphragm 4 is arranged between the first lens group 1 and the second lens group 2, and the imaging size is full-frame, i.e. 24mm×36mm. The iris diaphragm 4 with variable caliber is adopted;
the third lens group 3 is fixedly arranged, and consists of an eleventh lens 31, a twelfth lens 32 and a thirteenth lens 33 which are sequentially arranged from the object side to the image side, wherein the eleventh lens 31 and the twelfth lens 32 form a third cemented lens group with positive focal power, and the focal power of the thirteenth lens 33 is negative;
the focal length between the first lens group 1 and the second lens group 2 satisfies the following relationship:
1.30 < f1/ f2< 1.55；
wherein f1 is the focal length of the first lens group 1, and f2 is the focal length of the second lens group 2. When f1/f 2> 1.55, the near object distance field angle will be significantly less than the infinity field angle; when f1/f2< 1.30, the near object distance field angle will be significantly greater than the infinity field angle.
As a further improvement, the focal length between the second lens group 2 and the system satisfies the following relationship:
1.1<f2/fs<1.3；
wherein fs is the system focal length.
When f2/fs is more than 1.3, the focal length of the focusing group is longer, the spherical aberration and the coma aberration of the system are reduced when the object distance is near, the image quality is improved, but the total length of the system tends to be longer, and the lens is not beneficial to compactness and miniaturization; when f2/fs is less than 1.1, the total length of the system can be made shorter, but aberrations such as spherical aberration, coma aberration and the like can be generated, which is unfavorable for improving the image quality.
In order to better control chromatic aberration of the system, the first lens 11, the sixth lens 16 and the tenth lens 23 are made of low-dispersion materials;
i.e., vd1>65, vd6>65, vd10>65;
where vd1, vd6, and vd10 represent abbe numbers of materials of the first lens 11, the sixth lens 16, and the tenth lens 23, respectively.
In order to better control the spherical aberration and the coma aberration of the focusing group and ensure the image quality of the system, the low-respiratory-effect large-aperture photographic lens also satisfies the following relation:
0.4 < |R8f/ fs|< 0.6；
wherein R8f is a radius of curvature of a front surface of the eighth lens 21, the front surface being a surface near the object plane side. When |r8f/fs| >0.6 or |r8f/fs| <0.4, spherical aberration and coma of the focus group become serious, which is detrimental to the lens resolution.
In order to better compensate the field curvature of the lens, the low respiratory effect large aperture photographic lens also satisfies the following relationship:
1.2<|f13/fs|<1.5；
where f13 is the focal length of the thirteenth lens 33.
The focal length of the lens is 50.0mm, the FNo is 1.44, the working distance is 600 mm-infinity, and the total length of the lens is 128.56mm.
The data of the radius of curvature, center thickness, refractive index nd, abbe number vd, and the like of each lens are shown in the following table.
The surface serial numbers are sequentially arranged along the incident direction of the light rays;
the formula of respiration rate at focusing at different object distances is:
wherein w is a system half view angle when not infinite, and win is a system half view angle when infinite.
The variable thickness, half field angle and respiration rate data at infinity and 600mm working distance are given in the following table:
as can be seen from the above table, the respiration rate is less than 1%, which is a low respiration effect.
Wherein, the working distance is the distance from the vertex of the first lens to the object.
The signed number means that the surface is aspheric. The aspherical formula is as follows:
wherein c is the radius of curvature, r is the half-caliber value of the lens, and the aspherical coefficients are as follows:
the data from the above table and the associated formulas can be obtained:
f1=90.53；
f2=60.94；
f1 / f2 =1.25；
f2/fs = 1.22；
vd1 = 70.39；
vd6 = 95.10；
vd10 = 68.62；
|R8f/ fs|=|-26.34/50|=0.53；
f13=-70.37；
|f13/fs|=1.41；
fig. 1 and fig. 2 are schematic views of a lens structure with an infinite distance and a 600mm working distance according to an embodiment of the present invention. When the object is far and near, the group 2 is moved leftwards along the optical axis of the lens to focus, so that the image is kept clear.
The lens barrel according to the first embodiment will be further described by a detailed analysis of the optical system according to the first embodiment.
The optical transfer function is a more accurate, visual and common way to evaluate the imaging quality of an optical system, and the higher and smoother the curve, the better the imaging quality of the system, and the better the correction of the aberration.
Fig. 3 to 4 are graphs of MTF (modulation transfer function) of the system at an operating distance of infinity and 600mm, respectively. As shown in FIG. 4, the system has an MTF value greater than 0.2 at infinity and a y' image height of 14.7mm at 50 lp/mm. As shown in FIG. 5, the system has an MTF value greater than 0.2 at 600mm and a y' image height of 14.7mm at 30 lp/mm. The lens performance can meet a 6K resolution camera.
Example two
The differences from the first embodiment are: the focal length of the lens in the implementation is 50.0mm, the FNo is 1.45, the working distance is 600 mm-infinity, and the total length of the lens is 128.58mm. The data of the radius of curvature, center thickness, refractive index nd, abbe number vd, and the like of each lens are shown in the following table.
The surface serial numbers are sequentially arranged along the incident direction of the light rays;
the variable thickness, half field angle and respiration rate data at infinity and 600mm working distance are given in the following table:
as can be seen from the above table, the respiration rate is less than 1%, which is a low respiration effect.
The signed number means that the surface is aspheric. The aspherical formula is as follows:
wherein c is the radius of curvature, r is the half-caliber value of the lens, and the aspherical coefficients are as follows:
the data from the above table and the associated formulas can be obtained:
f1=82.92；
f2=61.51；
f1 / f2 =1.35；
f2/fs = 1.23；
vd1 = 70.39；
vd6 = 95.10；
vd10 = 68.62；
|R8f/ fs|=|-21.85/50|=0.44；
f13=-74.66；
|f13/fs|=1.49；
wherein fig. 5 and fig. 6 are schematic views of the lens structure of embodiment 2 of the present invention at infinity and 200mm working distance, respectively. When the object moves far and near, the group 2 is moved leftwards to focus, so that the image is kept clear.
The lens provided in this embodiment 2 will be further described by detailed analysis of the optical system in embodiment 2.
Fig. 7 to 8 are graphs of MTF (modulation transfer function) of the system at an operating distance of infinity and 600mm, respectively. As in fig. 8, the system has an MTF value greater than 0.2 at infinity and a y' image height of 14.7mm at 50 lp/mm. As shown in FIG. 9, the system has an MTF value greater than 0.2 at 600mm and a y' image height of 14.7mm at 30 lp/mm. The lens performance can meet a 6K resolution camera.
Example III
The differences from the first embodiment are: the focal length of the lens in this embodiment is 50.0mm, FNo is 1.45, working distance is 600 mm-infinity, and total length of the lens is 128.57mm. The data of the radius of curvature, center thickness, refractive index nd, abbe number vd, and the like of each lens are shown in the following table.
The surface serial numbers are sequentially arranged along the incident direction of the light rays;
the variable thickness, half field angle and respiration rate data at infinity and 600mm working distance are given in the following table:
as can be seen from the above table, the respiration rate is less than 1%, which is a low respiration effect.
The signed number means that the surface is aspheric. The aspherical formula is as follows:
wherein c is the radius of curvature, r is the half-caliber value of the lens, and the aspherical coefficients are as follows:
the data from the above table and the associated formulas can be obtained:
f1=90.30；
f2=59.75；
f1 / f2 =1.251.51；
f2/fs = 1.20；
vd1 = 81.60；
vd6 = 90.19；
vd10 = 68.62；
|R8f/ fs|=|-26.34/50|=0.53；
f13=-67.23；
|f13/fs|=1.34；
fig. 9 and 10 are schematic views of the lens structure of embodiment 3 of the present invention at infinity and 200mm working distance, respectively. When the object moves far and near, the group 2 is moved leftwards to focus, so that the image is kept clear.
The lens provided in this embodiment 3 will be further described by detailed analysis of the optical system in embodiment 3.
Fig. 11 to 12 are graphs of MTF (modulation transfer function) of the system at an operating distance of infinity and 600mm, respectively. As in fig. 12, the system is at infinity, with an MTF value greater than 0.2 at 50lp/mm for a y' image height of 14.7 mm. As shown in FIG. 12, the system has an MTF value greater than 0.2 at 600mm and a y' image height of 14.7mm at 30 lp/mm. The lens performance can meet a 6K resolution camera.
In summary, the present invention provides a lens system, which adopts three lens groups, wherein a first lens group is a fixed group, a second lens group for compensating for working distance variation is a moving group, and a fixed third lens group, through the distribution of the optical power of each optical lens, and meanwhile, reasonable optical glass materials are adopted, so that parameters such as refractive index, abbe coefficient, etc. of the lens are matched with imaging conditions in the structural form of the lens system, and further, spherical aberration, coma aberration, astigmatism, field curvature, chromatic aberration of magnification and positional chromatic aberration of the lens system are well corrected, and the lens system has good wide working distance applicability.
When the object is close to the lens, the first lens group is kept motionless, and the second lens group moves towards the object, so that the object can be clearly imaged on the image plane. The floating focusing mode is also beneficial to dust prevention and moisture prevention of the lens.
While the invention has been illustrated and described with respect to specific embodiments and alternatives thereof, it will be appreciated that various changes and modifications can be made therein without departing from the spirit of the invention. It is, therefore, to be understood that the invention is not to be in any way limited except by the appended claims and their equivalents.
Claims (5)
1. The utility model provides a big light ring photographic lens of low respiratory effect which characterized in that: the lens system comprises a first lens group, a second lens group and a third lens group which are sequentially arranged from an object side to an image side;
the first lens group is fixedly arranged and consists of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged from an object side to an image side, wherein the focal power of the first lens is negative, the second lens and the third lens group form a first bonding lens group with positive focal power, the focal power of the fourth lens is positive, the focal power of the fifth lens is positive, and the sixth lens and the seventh lens form a second bonding lens group with positive focal power;
the second lens group is movable and adjustable and is used for compensating working distance change, and the lens system consists of an eighth lens, a ninth lens and a tenth lens which are sequentially arranged from an object side to an image side, wherein the focal power of the eighth lens is negative, the focal power of the ninth lens is positive, and the focal power of the tenth lens is positive; the system diaphragm is arranged between the first lens group and the second lens group;
the third lens group is fixedly arranged and consists of an eleventh lens, a twelfth lens and a thirteenth lens which are sequentially arranged from the object side to the image side, the eleventh lens and the twelfth lens form a third cemented lens group with positive focal power, and the focal power of the thirteenth lens is negative;
the focal length between the first lens group and the second lens group satisfies the following relationship:
1.30 < f1/ f2< 1.55；
wherein f1 is the focal length of the first lens group, and f2 is the focal length of the second lens group.
2. The low-respiratory-effect large-aperture photographic lens of claim 1, wherein: the focal length between the second lens group and the system satisfies the following relationship:
1.1<f2/fs<1.3；
wherein fs is the system focal length.
3. The low-respiratory-effect large-aperture photographic lens of claim 1, wherein: the first lens, the sixth lens and the tenth lens are made of low-dispersion materials;
i.e., vd1>65, vd6>65, vd10>65;
where vd1, vd6, and vd10 represent abbe numbers of the first lens, the sixth lens, and the tenth lens material, respectively.
4. The low-respiratory-effect large-aperture photographic lens of claim 1, wherein: the low respiratory effect large aperture photographic lens also satisfies the following relationship:
0.4 < |R8f/ fs|< 0.6；
wherein R8f is the radius of curvature of the front surface of the eighth lens, the front surface is a surface close to the object plane side, and fs is the focal length of the system.
5. The low-respiratory-effect large-aperture photographic lens of claim 1, wherein: the low respiratory effect large aperture photographic lens also satisfies the following relationship:
1.2<|f13/fs|<1.5；
where f13 is the focal length of the thirteenth lens and fs is the focal length of the system.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5793535A (en) * | 1995-10-25 | 1998-08-11 | Asahi Kogaku Kogyo Kabushiki Kaisha | Zoom lens having high zoom ratio |
| CN104777599A (en) * | 2015-03-26 | 2015-07-15 | 中国科学院长春光学精密机械与物理研究所 | Portable flexible triple-component high-zoom ratio varifocal lens |
| CN105487211A (en) * | 2016-01-07 | 2016-04-13 | 东莞市宇瞳光学科技股份有限公司 | Large-aperture, large-image surface ultra-wide angle zoom lens |
| CN107957622A (en) * | 2018-01-04 | 2018-04-24 | 东莞市宇瞳光学科技股份有限公司 | A kind of focal length zoom lens of the big image planes of large aperture |
| CN114019650A (en) * | 2020-07-09 | 2022-02-08 | 广东思锐光学股份有限公司 | Super wide angle large aperture warp camera lens |
| CN114755806A (en) * | 2022-06-10 | 2022-07-15 | 深圳市雷影光电科技有限公司 | Large-aperture telephoto lens |
| CN115576087A (en) * | 2022-10-27 | 2023-01-06 | 浙江大学 | Medium-sized double-focal-length lens optical system |
-
2023
- 2023-08-18 CN CN202311040352.5A patent/CN116774415B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5793535A (en) * | 1995-10-25 | 1998-08-11 | Asahi Kogaku Kogyo Kabushiki Kaisha | Zoom lens having high zoom ratio |
| CN104777599A (en) * | 2015-03-26 | 2015-07-15 | 中国科学院长春光学精密机械与物理研究所 | Portable flexible triple-component high-zoom ratio varifocal lens |
| CN105487211A (en) * | 2016-01-07 | 2016-04-13 | 东莞市宇瞳光学科技股份有限公司 | Large-aperture, large-image surface ultra-wide angle zoom lens |
| CN107957622A (en) * | 2018-01-04 | 2018-04-24 | 东莞市宇瞳光学科技股份有限公司 | A kind of focal length zoom lens of the big image planes of large aperture |
| CN114019650A (en) * | 2020-07-09 | 2022-02-08 | 广东思锐光学股份有限公司 | Super wide angle large aperture warp camera lens |
| CN114755806A (en) * | 2022-06-10 | 2022-07-15 | 深圳市雷影光电科技有限公司 | Large-aperture telephoto lens |
| CN115576087A (en) * | 2022-10-27 | 2023-01-06 | 浙江大学 | Medium-sized double-focal-length lens optical system |
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| CN116774415B (en) | 2023-10-31 |
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