CN210690928U - Deformation lens - Google Patents
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- CN210690928U CN210690928U CN201921614108.4U CN201921614108U CN210690928U CN 210690928 U CN210690928 U CN 210690928U CN 201921614108 U CN201921614108 U CN 201921614108U CN 210690928 U CN210690928 U CN 210690928U
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Abstract
The utility model provides an anamorphic lens, include the deformation group that comprises cylindrical lens that sets gradually from the object space to the image space and the formation of image group of constituteing by spherical lens, the deformation group includes first lens, second lens and the third lens that sets gradually from the object space to the image space, the second lens with the third lens bonding is in the same place, first lens is the biconcave cylindrical lens of negative focal power, the second lens is negative focal power cylindrical lens, the third lens is positive focal power cylindrical lens. By utilizing the optical characteristics of the cylindrical lens forming the deformation group, the entering horizontal light is compressed, the light entering in a vertical field of view is kept unchanged, the light is comprehensively corrected by the rear imaging group, and the angle of the horizontal field of view is increased by 33%, so that 1.33X deformation shooting is realized. And the lens of the scheme has smaller volume, lighter weight and lower cost, and can better meet the use requirements of most common users.
Description
Technical Field
The utility model relates to a camera lens technical field, concretely relates to deformation camera lens.
Background
With the rapid development of internet technology, photographing and video become an essential part of the life of common consumers. In recent years, with the promotion of technologies such as 5G and the like, videos such as Vlog and the like are shared more and more, and people who shoot short films and micro-movies by using tools such as mobile phones, cameras and the like are more and more.
However, the conventional shooting ratio of the mobile phones, tablet computers, cameras and other devices on the market is 16: 9, and the ratio of the wide-screen videos with the movie feeling is 2.4: 1. Therefore, the user needs to cut the photographed image by manual cutting or digital cutting. But the clipping sacrifices the pixels of the picture.
Some professional morphed movie shot brands are: german-hokk (Hawk), uk-cook (cookie), german-Alai (ARRI), american-pandavist (Panavision), french-anqin (Angenieux) and SLR of hong kong, usually facing professional customers, are generally tens of thousands of dollars or even more expensive in price and the anamorphic lens itself is several kilograms in mass.
The professional anamorphic lens with high price and high quality is not suitable for common users. Therefore, how to make the large-aperture anamorphic lens small in volume and light in weight is a technical problem to be solved at present.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the great price of professional anamorphic lens quality and the defect that unsuitable ordinary user used among the prior art to provide an anamorphic lens.
The utility model provides an anamorphic lens, includes the deformation group that comprises cylindrical lens that sets gradually from the object space to the image space and the formation of image group that comprises spherical lens, the deformation group is including first lens, second lens and the third lens that sets gradually from the object space to the image space, the second lens is negative focal power cylindrical lens, the third lens is positive focal power cylindrical lens.
The first lens is a negative focal power biconcave cylindrical lens.
The second lens and the third lens are bonded together.
The imaging group sets gradually fourth lens, fifth lens, sixth lens, seventh lens, eighth lens, ninth lens and tenth lens along the direction that the light path points to the image space, the fourth lens is positive focal power meniscus spherical lens, fifth and eighth lens be positive focal power the sixth lens the seventh lens is negative focal power spherical lens, the ninth lens is positive focal power biconvex spherical lens, the tenth lens is positive focal power meniscus spherical lens.
The fifth lens and the sixth lens are bonded together, the fifth lens is a positive focal power lens, and the sixth lens is a negative focal power lens.
The fifth lens and the sixth lens are independent of each other, the fifth lens is a positive focal power meniscus lens, the sixth lens is a negative focal power meniscus lens, and the concave surfaces of the fifth lens and the sixth lens face towards the image space.
The power distribution of the lenses constituting the anamorphic group and the lenses constituting the imaging group satisfy the following relationship:
500＜Abs(f1-3/f4-10)；
45＜f4-10＜55；
1.60＜f4-6/f4-10＜2.10；
0.60＜f7-10/f4-10＜0.80；
the power distribution of the lenses constituting the anamorphic group and the lenses constituting the imaging group further satisfy the following relationship:
1.10＜abs(f1/f2-10)＜1.40；
-0.80＜f1/f2-3＜-0.70；
0.50＜f4/f4-6＜0.80；
1.0＜f9-10/f7-10＜1.60；
5.0＜abs(f7-8/f7-10)＜9.0；
wherein f represents the focal length in the X direction of the lens, wherein the numerals behind f represent the numbers of ten lenses constituting the anamorphic lens, that is, f1 is the focal length in the X direction of the first lens, f1-10 is the combined focal length in the X direction of 10 lenses in total of the first lens 1 to the tenth lens, and the rest are the same.
The length of the anamorphic lens is less than 105mm, and the maximum outer diameter of the anamorphic lens is less than 70 mm.
The focal length of the anamorphic lens in the Y direction is 50mm, and the aperture is 1.8.
The mass of the anamorphic lens is less than 600 g.
The utility model discloses technical scheme has following advantage:
1. the utility model provides an anamorphic lens, include the deformation group that comprises cylindrical lens that sets gradually from the object space to the image space and the formation of image group of constituteing by spherical lens, the deformation group includes first lens, second lens and the third lens that sets gradually from the object space to the image space, the second lens with the third lens bonding is in the same place, first lens is the biconcave cylindrical lens of negative focal power, the second lens is positive focal power cylindrical lens, the third lens is positive focal power cylindrical lens.
The optical characteristics of the cylindrical lens forming the deformation group are utilized to compress the light entering horizontally, the light entering in the vertical direction is kept unchanged, and the light is comprehensively corrected through the subsequent imaging group, so that the field angle of the horizontal shooting of the lens is increased, and the width of the actually shot picture is increased. The wide-screen video or the photo with the ratio of 2.4: 1 can be obtained on the premise of not sacrificing pixels without post-clipping. Meanwhile, the deformation group is composed of cylindrical lenses, so that the deformation lens of the scheme has optical characteristics such as elliptic out-of-focus light spots and science fiction line flare besides the deformation function.
2. The utility model provides an anamorphic lens constitutes lens and the constitution of anamorphic group the focal power distribution of the lens of formation of image group satisfies following relation: 500 < Abs (f1-3/f 4-10); f4-10 is more than 45 and less than 55; f4-6/f4-10 is more than 1.60 and less than 2.10; f7-10/f4-10 is more than 0.60 and less than 0.80; 1.10 < abs (f1/f2-10) < 1.40; -0.80 < f1/f2-3 < -0.70; f4/f4-6 is more than 0.50 and less than 0.80; f10/f7-10 is more than 3.10 and less than 4.5; abs (f2-10/f1-10) < 1.60 < 1.10; wherein f represents the focal length in the X direction of the lens, wherein the numerals behind f represent the numbers of ten lenses constituting the anamorphic lens, that is, f1 is the focal length in the X direction of the first lens, f1-10 is the combined focal length in the X direction of 10 lenses in total from the first lens to the tenth lens, and the rest are the same.
The market angle of the horizontal shooting of the half-frame lens with 50mmF1.8 is increased by 33%, and meanwhile, the market angle in the vertical direction is kept unchanged, so that the 50mm deformation lens with small volume and large aperture is obtained.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an optical structure diagram in the X direction according to the first embodiment of the present invention;
fig. 2 is a Y-direction optical structure diagram according to a first embodiment of the present invention;
fig. 3 is an optical structure diagram in the X direction according to a second embodiment of the present invention;
fig. 4 is a Y-direction optical configuration diagram according to a second embodiment of the present invention.
Description of reference numerals:
1. a first lens; 2. a second lens; 3. a third lens; 4. a fourth lens; 5. a fifth lens; 6. a sixth lens; 7. a seventh lens; 8. an eighth lens; 9. a ninth lens; 10. a tenth lens; 11. a deformation group; 12. and an imaging group.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
As shown in fig. 1 and 2, the present embodiment provides a 50mm focal length half-frame large-aperture anamorphic lens, which is composed of ten lenses arranged along an optical path from an object side to an image side, and includes a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, a sixth lens 6, a seventh lens 7, an eighth lens 8, a ninth lens 9, and a tenth lens 10.
Three lenses, namely the first lens 1, the second lens 2 and the third lens 3, are cylindrical lenses, the second lens 2 and the third lens 3 are bonded together, and the three cylindrical lenses form a deformation group 11. The optical lens system comprises a fourth lens 4, a fifth lens 5, a sixth lens 6, a seventh lens 7, an eighth lens 8, a ninth lens 9 and a tenth lens 10, wherein the seven lenses are spherical lenses, the fifth lens 5 and the sixth lens 6 are bonded together, the seventh lens 7 and the eighth lens 8 are bonded together, and the seven lenses form an imaging group 12.
The first lens 1 is a negative focal power biconcave cylindrical lens, the second lens 2 is a negative cylindrical lens, the third lens 3 is a positive focal power cylindrical lens, the fourth lens 4 is a positive focal power meniscus spherical lens, and the concave surface of the fourth lens 4 faces the image space.
The fifth lens 5 is a positive power spherical lens, the sixth lens 6, the seventh lens 7, and a negative power spherical lens. The ninth lens 9 is a double convex spherical lens with positive power, the tenth lens 10 is a meniscus spherical lens with positive power, and the convex surface of the tenth lens is convex toward the object side.
The lenses bonded together are regarded as one piece, and in this embodiment, the second lens 2 and the third lens 3 are bonded together. The fifth lens 5 and the sixth lens 6 are bonded together, and the seventh lens 7 and the eighth lens 8 are bonded together. Therefore, the anamorphic lens of the present embodiment is composed of 10 pieces and 7 sets.
The bonding manner between the second lens 2 and the third lens 3, the fifth lens 5 and the sixth lens 6, and the seventh lens 7 and the eighth lens 8 is not particularly limited, and in the present embodiment, the bonding manner is adhesion. As an alternative embodiment, based on the concept of the present invention, in order to distinguish from the present application, the lens shape after the combination is modified, such as the combination of lamination and integral molding, and then the lens shape after the combination is modified, which should be included in the protection scope of the present application.
In the present embodiment, the fourth lens 4 in the imaging group is an independent lens. As an alternative, the fourth lens 4 may be split into two or more lenses or replaced by bonding two or more lenses, and the power distribution in this embodiment, i.e. "0.60 < f4/f4-6 < 0.90", is satisfied after the fourth lens 4 is replaced. Therefore, in addition to the present embodiment, modifications and substitutions of the number of lenses and the combination mode for distinguishing from the present application are included in the scope of protection of the present application without departing from the gist of the present application.
In the present embodiment, the fifth lens 5 and the sixth lens 6 in the imaging group are bonded together. As an alternative embodiment, the fifth lens 5 and the sixth lens 6 may be split into two or more separate lenses. The fifth lens 5 and the sixth lens 6 bonded together may be replaced by a single independent single lens. In order to distinguish from the technical solution of the present embodiment, after the fifth lens 5 and the sixth lens 6 are replaced in the present embodiment, regardless of whether the type and the shape of the lenses are changed, the refractive power of the individual lenses or the combined lenses satisfies 0.60 < f4/f4-6 < 0.90, which falls within the protection scope of the present application.
In the present embodiment, the seventh lens 7 and the eighth lens 8 in the imaging group are bonded together. As an alternative embodiment, the seventh lens 7 and the eighth lens 8 may be divided into two or more independent lenses. The seventh lens 7 and the eighth lens 8 bonded together may be replaced with a single independent single lens. In order to distinguish from the technical solutions of the present embodiment, after the seventh lens 7 and the eighth lens 8 are replaced in the present embodiment, the refractive power of the individual lenses or the combined lenses satisfies 5.0 < abs (f7-8/f7-10) < 9.0 regardless of the type, shape and number of the lenses, which falls within the protection scope of the present application.
In the embodiment, the ninth lens 9 and the tenth lens 10 of the imaging group are two independent lenses, and in the embodiment, the power distribution of the ninth lens 9 and the tenth lens 10 satisfies 1.0 < f9-10/f7-10 < 1.60. Therefore, on the basis of satisfying the above power distribution, the ninth lens 9 and the tenth lens 10 are replaced by a plurality of lenses bonded together or a single independent lens, and any change in the shape, number and combination of the lenses is considered to fall within the protection scope of the present application.
The specific values of the actual parameters of each lens are not specifically limited, and in this embodiment, the focal power of each lens satisfies the following mathematical relationship:
500＜Abs(f1-3/f4-10)；
45＜f4-10＜55；
1.60＜f4-6/f4-10＜2.10；
0.60＜f7-10/f4-10＜0.80。
the optical power of each lens also satisfies the following mathematical relationship:
1.10＜abs(f1/f2-10)＜1.40；
-0.80＜f1/f2-3＜-0.70；
0.60＜f4/f4-6＜0.90；
1.0＜f9-10/f7-10＜1.60；
5.0＜abs(f7-8/f7-10)＜9.0；
wherein f represents the focal length in the X direction of the lens, wherein the numerals behind f represent the numbers of ten lenses constituting the anamorphic lens, that is, f1 is the focal length in the X direction of the first lens, f1-10 is the combined focal length in the X direction of 10 lenses in total from the first lens to the tenth lens, and the rest are the same.
The actual parameters of the lenses of this embodiment that meet the above mathematical relationship are listed below:
wherein the first lens 1 is a high abbe low dispersion lens.
Before the anamorphic lens of the present embodiment is used, the field angle of the lens with 50mm focal length and 1.8 aperture is: v (vertical) 18.25 °, H (horizontal) 27.04 °.
After the anamorphic lens of the embodiment is adopted, the field angle of the lens with 50mm focal length and 1.8 aperture is as follows: v (vertical) 18.25 °, H (horizontal) 36.21 °.
The vertical direction view field angle of the comparison test view field angle is unchanged, and the horizontal direction view field angle deformation ratio is as follows: 36.21/27.04 is 1.339.
The actual width ratio is in the range of 2.35-2.40, so the deformation ratio is 1.33, namely the horizontal view angle is increased by 33%, thereby realizing 1.33X deformation shooting.
When the anamorphic lens of the embodiment is manufactured, the length of the anamorphic lens is less than 105mm, the maximum outer diameter is less than 70mm, the mass is less than 600g, the anamorphic lens is far smaller than a photographic exchange lens of the same specification, and the anamorphic lens is far smaller than a professional film anamorphic lens of the same specification in the market.
The material for manufacturing each lens is not particularly limited, and in this embodiment, each lens is made of optical glass.
The bayonet of each brand camera on the market can be designed and compatibly matched according to actual use requirements to the lens of this application to realize that personalized customization and cooperation are general.
Example 2:
the present embodiment provides a 50mm focal length half-frame large-aperture anamorphic lens, which is different from embodiment 1 in that, as shown in fig. 3 and 4, the fifth lens 5 and the sixth lens 6 in the present embodiment are two independent lenses. The fifth lens element 5 is a positive power meniscus lens element 5, the concave surface of the fifth lens element 5 faces the image side, the sixth lens element 6 is a negative power meniscus lens element, and the concave surface of the sixth lens element 6 faces the image side.
In this embodiment, the fifth lens 5 and the sixth lens 6 are independent of each other, and therefore the anamorphic lens of this embodiment is composed of 10 pieces and 8 groups in total, as compared with embodiment 1.
In this embodiment, the fifth lens 5 and the sixth lens 6 are replaced on the basis of embodiment 1, and since the optical path changes after replacement, the type and shape of the lenses need to be adjusted and changed accordingly to meet the power distribution in embodiment 1. Therefore, the types of lenses, the combination of lenses, and the number of lenses to be changed for the purpose of distinguishing from the technical solution of the present embodiment are all within the scope of the present application.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (13)
1. The utility model provides an anamorphic lens, its characterized in that includes the deformation group (11) that constitute by cylindrical lens that set gradually from the object space to the image space and the formation of image group (12) that constitute by spherical lens, deformation group (11) are including first lens (1), second lens (2) and third lens (3) that set gradually from the object space to the image space, first lens (1) are negative focal power cylindrical lens, second lens (2) are negative focal power cylindrical lens, third lens (3) are positive focal power cylindrical lens.
2. Anamorphic lens according to claim 1, characterized in that the first lens (1) is a negative-power biconcave cylindrical lens.
3. Anamorphic lens according to claim 1, characterized in that the second lens (2) and the third lens (3) are cemented together.
4. Anamorphic lens according to claim 3, characterized in that the second lens (2) and the third lens (3) are glued together.
5. The anamorphic lens according to claim 1, wherein the imaging group (12) is provided with a fourth lens (4), a fifth lens (5), a sixth lens (6), a seventh lens (7), an eighth lens (8), a ninth lens (9), and a tenth lens (10) in order along a direction in which the optical path points to the image side, the fourth lens (4) is a positive power meniscus spherical lens, the seventh lens (7) is a negative power spherical lens, the eighth lens (8) is a positive power spherical lens, the ninth lens (9) is a positive power biconvex spherical lens, and the tenth lens (10) is a positive power meniscus spherical lens.
6. An anamorphic lens according to claim 5, characterised in that the seventh lens (7) and the eighth lens (8) are cemented together.
7. An anamorphic lens according to claim 5, characterized in that the fifth lens (5) and the sixth lens (6) are cemented together, the fifth lens (5) being a spherical lens of positive power and the sixth lens (6) being a lens of negative power.
8. The anamorphic lens according to claim 5, wherein the fifth lens (5) and the sixth lens (6) are independent of each other, the fifth lens (5) is a positive power meniscus lens 5, the sixth lens (6) is a negative power meniscus lens, and the concave surfaces of the fifth lens (5) and the sixth lens (6) are both disposed toward the image side.
9. An anamorphic lens according to any of claims 1-8, characterized in that the power distribution of the lenses constituting the anamorphic group (11) and the lenses constituting the imaging group (12) satisfy the following relationship:
500＜Abs(f1-3/f4-10)；
45＜f4-10＜55；
1.60＜f4-6/f4-10＜2.10；
0.60＜f7-10/f 4-10＜0.80。
10. anamorphic lens according to claim 9, characterized in that the power distribution of the lenses constituting the anamorphic group (11) and the lenses constituting the imaging group (12) also satisfy the following relationship:
1.10＜abs(f1/f2-10)＜1.40；
-0.80＜f1/f2-3＜-0.70；
0.50＜f4/f4-6＜0.80；
1.0＜f9-10/f7-10＜1.60；
5.0＜abs(f7-8/f7-10)＜9.0；
wherein f represents the focal length in the X direction of the lens, wherein the numerals behind f represent the numbers of ten lenses forming the anamorphic lens, that is, f1 is the focal length in the X direction of the first lens (1), and f1-10 is the combined focal length in the X direction of 10 lenses in total of the first lens (1) to the tenth lens (10), and the rest is the same.
11. An anamorphic lens according to any of claims 1-8 wherein the length of the anamorphic lens is less than 105mm and the maximum outer diameter of the anamorphic lens is less than 70 mm.
12. The anamorphic lens of any of claims 1-8 wherein the anamorphic lens is a half-frame anamorphic lens having a Y-direction focal length of 50mm and an aperture of 1.8.
13. An anamorphic lens according to any of claims 1-8 wherein the anamorphic lens has a mass of less than 600 g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921614108.4U CN210690928U (en) | 2019-09-26 | 2019-09-26 | Deformation lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921614108.4U CN210690928U (en) | 2019-09-26 | 2019-09-26 | Deformation lens |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3936919A1 (en) * | 2020-07-09 | 2022-01-12 | Zhongshan AZU Optoelectronics Technology Co., Ltd. | An anamorphic lens |
| EP3936918A1 (en) * | 2020-07-09 | 2022-01-12 | Zhongshan AZU Optoelectronics Technology Co., Ltd. | A super wide-angle large aperture anamorphic lens |
| WO2022006925A1 (en) * | 2020-07-09 | 2022-01-13 | 广东思锐光学股份有限公司 | Anamorphic lens |
| WO2022136964A1 (en) * | 2020-12-23 | 2022-06-30 | 中山市亚中光电科技有限公司 | Full-frame anamorphic lens |
-
2019
- 2019-09-26 CN CN201921614108.4U patent/CN210690928U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3936919A1 (en) * | 2020-07-09 | 2022-01-12 | Zhongshan AZU Optoelectronics Technology Co., Ltd. | An anamorphic lens |
| EP3936918A1 (en) * | 2020-07-09 | 2022-01-12 | Zhongshan AZU Optoelectronics Technology Co., Ltd. | A super wide-angle large aperture anamorphic lens |
| WO2022006925A1 (en) * | 2020-07-09 | 2022-01-13 | 广东思锐光学股份有限公司 | Anamorphic lens |
| WO2022136964A1 (en) * | 2020-12-23 | 2022-06-30 | 中山市亚中光电科技有限公司 | Full-frame anamorphic lens |
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Effective date of registration: 20210521 Address after: 528458 workshop, Wuguishan No.3 Industrial Zone, Zhongshan City, Guangdong Province Patentee after: Guangdong Sirui Optical Co.,Ltd. Patentee after: Zhongshan Yazhong Photoelectric Technology Co., Ltd Address before: 528458 workshop, Wuguishan No.3 Industrial Zone, Zhongshan City, Guangdong Province Patentee before: Guangdong Sirui Optical Co.,Ltd. |