CN116134345B - Zoom imaging lens, imaging device and electronic equipment - Google Patents
Zoom imaging lens, imaging device and electronic equipmentInfo
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- CN116134345B CN116134345B CN202180002155.7A CN202180002155A CN116134345B CN 116134345 B CN116134345 B CN 116134345B CN 202180002155 A CN202180002155 A CN 202180002155A CN 116134345 B CN116134345 B CN 116134345B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/12—Fluid-filled or evacuated lenses
- G02B3/14—Fluid-filled or evacuated lenses of variable focal length
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Abstract
一种变焦成像镜头、摄像装置及电子设备，变焦成像镜头(100)，包括：第一透镜组(11)与第二透镜组(12)；第一透镜组(11)可沿变焦成像镜头的光轴移动，第二透镜组(12)包括液态透镜组件(121)，液态透镜组件(121)包括流体(1214)与薄膜(1215)，流体(1214)被薄膜(1215)包裹；薄膜(1215)可变形以及可透光，薄膜(1215)的形状会随着外力变化，薄膜(1215)的形状改变时液态透镜组件的焦距改变，以实现变焦成像镜头变焦或对焦。本方案可以减小变焦成像镜头的总长、体积以及组装公差，降低制造困难。
A zoom imaging lens, a camera device, and an electronic device are disclosed. The zoom imaging lens (100) includes a first lens group (11) and a second lens group (12). The first lens group (11) is movable along the optical axis of the zoom imaging lens. The second lens group (12) includes a liquid lens assembly (121), which includes a fluid (1214) and a thin film (1215). The fluid (1214) is encapsulated by the thin film (1215). The thin film (1215) is deformable and transparent. The shape of the thin film (1215) changes with external force. When the shape of the thin film (1215) changes, the focal length of the liquid lens assembly changes, thereby enabling the zoom imaging lens to zoom or focus. This solution can reduce the overall length, volume, and assembly tolerance of the zoom imaging lens, and reduce manufacturing difficulties.
Description
Technical Field
The present disclosure relates to a zoom imaging lens, an imaging apparatus, and an electronic device, and more particularly, to a zoom imaging lens and an imaging apparatus suitable for use in an electronic device such as a mobile terminal.
Background
In the related art, a miniaturized zoom imaging lens mainly adopts a mode of moving and zooming by a plurality of lens groups, a moving space is required to be reserved for each lens group, and the problems of relatively long total length, large volume, large assembly tolerance and difficult manufacture of the imaging lens exist.
Disclosure of Invention
In order to overcome the problems in the related art, embodiments of the present disclosure provide a zoom imaging lens, an imaging device, and an electronic apparatus, which are used to reduce the overall length, volume, and assembly tolerance of the zoom imaging lens, and reduce manufacturing difficulties.
According to a first aspect of an embodiment of the present disclosure, there is provided a zoom imaging lens including a first lens group and a second lens group;
The first lens group can move along the optical axis of the zoom imaging lens, the second lens group comprises a liquid lens component, the liquid lens component comprises fluid and a film, the fluid is wrapped by the film, the film is deformable and transparent, the shape of the film can be changed along with external force, and when the shape of the film is changed, the focal length of the liquid lens component is changed, so that the zoom imaging lens can be zoomed or focused.
In one embodiment, the zoom imaging lens further comprises a motor, the motor comprising a first mover, the motor configured to drive the first mover to move along an optical axis;
The liquid lens assembly further comprises a second rotor fixedly connected with the first rotor and capable of moving along the optical axis along with the first rotor so as to change the shape of the film.
In one embodiment, the liquid lens assembly further comprises a substrate, the substrate comprises a flat plate portion and an annular retaining wall, the flat plate portion and the annular retaining wall form a containing space, and the film is located in the containing space.
In one embodiment, the liquid lens assembly further comprises a substrate that provides a bearing surface for the film such that the contact portion of the film with the bearing surface is not deformed.
In one embodiment, the first lens group and the second lens group are sequentially arranged from an object side to an image side along the optical axis.
In one embodiment, the zoom imaging lens further includes a third lens group located on an object side of the first lens group, a position of the third lens group being fixed.
In one embodiment, the lateral magnification of the first lens group satisfies the following relation:
-2<beta<-0.5,
where beta is the lateral magnification.
In one embodiment, the third lens group includes at least one positive diopter lens, the positive diopter lens being a solid lens, the Abbe number of the positive diopter lens being greater than 30.
In one embodiment, the third lens group further comprises at least one negative diopter lens, the negative diopter lens being a solid lens, the abbe number of the negative diopter lens being less than 40.
In one embodiment, the second lens group further includes at least one positive diopter lens and one negative diopter lens, both of which are solid lenses.
In one embodiment, a distance between a surface vertex of the third lens group closest to the object side and an image plane on an optical axis is TTL, an effective image height is IH, and the TTL and the IH satisfy the following relation:
TTL/IH<30。
in one embodiment, the abbe number of the fluid is greater than 40.
In one embodiment, the zoom imaging lens further comprises an aperture, the aperture being located between the first lens group and the second lens group or in the second lens group.
In one embodiment, the aperture F value of the aperture is F1.5-F4.5.
In one embodiment, the zoom imaging lens further includes a turning prism located at an object side of the third lens group, the turning prism configured to eject light incident in a first direction to the third lens group in a second direction, the first direction being different from the second direction, the optical axis extending in the second direction.
In one embodiment, the zoom imaging lens has a zoom ratio of less than 5.
According to a second aspect of the embodiments of the present disclosure, there is provided an image capturing apparatus including an image sensor and the zoom imaging lens described above, where the image sensor is located on an imaging surface of the zoom imaging lens.
According to a third aspect of embodiments of the present disclosure, there is provided an electronic apparatus including an apparatus body and the above-described image pickup device, the image pickup device being mounted on the apparatus body.
In one embodiment, the electronic device further includes a control module configured to control the position of the first lens group according to a first preset correspondence between a control signal and a first lens group, so as to implement zooming or focusing, where the first correspondence includes a correspondence between control information of the position of the first lens group and a focal length of the zoom imaging lens, and the control signal includes information of the focal length of the zoom imaging lens.
In one embodiment, the control module is further configured to control the focal length of the liquid lens assembly according to a preset second correspondence between the control signal and a preset second correspondence, so as to implement zooming or focusing, wherein the second correspondence includes a correspondence between the focal length of the zoom imaging lens, an imaging distance, and control information of the focal length of the liquid lens assembly.
In one embodiment, the electronic device further includes a temperature sensor configured to acquire temperature information of the liquid lens component, and the second correspondence further includes a correspondence between the temperature information of the liquid lens component and control information of a focal length of the liquid lens component when the liquid lens component is in best focus at a current temperature.
In one embodiment, when the zoom imaging lens further includes a turning prism, the first direction is perpendicular to the second direction, and the optical axis extends along the second direction;
When the short edge of the electronic equipment extends along the second direction, the long edge of the electronic equipment extends along a first direction, or the thickness direction of the electronic equipment is the first direction;
when the long side of the electronic device extends along the second direction, the short side of the electronic device extends along a first direction, or the thickness direction of the electronic device is the first direction.
The technical scheme provided by the embodiment of the disclosure can include the following beneficial effects that as the zoom imaging lens comprises the liquid lens component, the liquid lens component comprises the substrate, the fluid and the film, the fluid is wrapped by the film, the film is deformable and light-permeable, the shape change of the film can be realized through the action of external force, and the focal length of the liquid lens component is changed when the shape of the film is changed, so that when the zoom imaging lens zooms or focuses, the lens group does not need to be moved along the optical axis in a large stroke way by changing the shape of the film in the liquid lens component, therefore, a large movement stroke space does not need to be reserved for the lens group, and the total length and the volume of the zoom imaging lens can be reduced. At the same time, the number of movable lens groups is reduced, the assembly tolerance is also reduced, and the manufacturing difficulty is reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic configuration diagram of an image pickup apparatus according to an exemplary embodiment.
Fig. 2 is a schematic structural diagram of another image pickup apparatus according to an exemplary embodiment.
Fig. 3 is a schematic structural diagram of another image pickup apparatus according to an exemplary embodiment.
Fig. 4 is a graph of spherical aberration, astigmatic field curvature, and distortion at the wide-angle end of an imaging lens according to an example embodiment.
Fig. 5 is a graph of spherical aberration, astigmatic field curvature, and distortion at the telephoto end of an imaging lens according to an example embodiment.
Fig. 6 is a block diagram illustrating a configuration of an electronic device according to an exemplary embodiment.
Fig. 7 is a schematic diagram of an electronic device according to an exemplary embodiment.
Fig. 8 is a schematic cross-sectional view of an electronic device, shown according to an example embodiment.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
Fig. 1 is a schematic configuration diagram of an image pickup apparatus according to an exemplary embodiment. The image pickup apparatus includes a zoom imaging lens 100 and an image sensor 16. The image sensor 16 is located at an imaging surface 161 of the zoom imaging lens 100. The image sensor 16 receives light incident through the zoom imaging lens 100, and collects image information.
As shown in fig. 1, the imaging lens 100 includes a first lens group 11, a second lens group 12, a third lens group 13, an aperture 14, and a filter 15.
As shown in fig. 1, in the present embodiment, the third lens group 13, the first lens group 11, the second lens group 12, and the optical filter 15 are sequentially arranged from the object side to the image side along the optical axis 17 of the imaging lens 100. An aperture 14 is located in the second lens group 12. In other embodiments, the aperture 14 may also be located between the first lens group 11 and the second lens group 12.
In the present embodiment, the position of the third lens group 13 is fixed, and the position of the third lens group 13 may be kept unchanged during zooming or focusing of the zoom imaging lens 100.
As shown in fig. 1, in the present embodiment, the third lens group 13 may include a first lens 131 and a second lens 132. The first lens element 131 and the second lens element 132 are sequentially arranged from an object side to an image side. The first lens 131 is a bi-moon lens, has a negative focal length, and is a negative diopter lens. The first surface 1311 of the first lens 131 facing the object side is convex, and the second surface 1312 facing the image side is concave. The second lens 132 has a positive focal length and is a positive diopter lens. The third surface 1321 of the second lens 132 facing the object side is convex, and the fourth surface 1322 facing the image side is concave.
In the present embodiment, the abbe number of the second lens 132 is greater than 30. Preferably, the abbe number of the second lens 132 is greater than 35. Preferably, the abbe number of the second lens 132 is greater than 40. The second lens 132 has a higher refractive index, and can increase the radius of curvature of the curved surface, which is beneficial to reducing spherical aberration.
In the present embodiment, the abbe number of the first lens 131 is less than 40. Preferably, the abbe number of the first lens 131 is less than 35. Preferably, the abbe number of the first lens 131 is less than 30.
In the present embodiment, the first lens 131 and the second lens 132 cooperate to reduce the chromatic aberration.
In the present embodiment, the first lens 131 and the second lens 132 are solid lenses and spherical lenses. The material of the first lens 131 is glass, and the material of the second lens 132 is glass. Of course, in other embodiments, the material of the first lens 131 and the material of the second lens 132 can be plastic, crystalline or semiconductor material structural components.
In the present embodiment, the first lens group 11 is movable along the optical axis 17. During zooming or focusing of the zoom imaging lens 100, the position of the first lens group 11 may be changed to change the focal length of the zoom imaging lens 100.
As shown in fig. 1, in the present embodiment, the first lens group 11 includes a third lens 111 and a fourth lens 112. The third lens element 111 and the fourth lens element 112 are sequentially arranged from an object side to an image side. The third lens 111 has a positive focal length and is a positive diopter lens. The fifth surface 1111 of the third lens 111 facing the object side is concave, and the sixth surface 1112 facing the image side is convex. The fourth lens 112 has a negative focal length and is a negative diopter lens. The seventh surface 1121 of the fourth lens 112 facing the object side is concave, and the eighth surface 1122 facing the image side is convex.
In the present embodiment, the third lens 111 and the fourth lens 112 are solid lenses. The material of the third lens 111 is plastic, and the material of the fourth lens 112 is plastic. Of course, in other embodiments, the material of the third lens 111 and the material of the fourth lens 112 can be glass, crystalline or semiconductor material structural components.
In the present embodiment, the third lens 111 and the fourth lens 112 are aspheric lenses. The curve equation of the aspherical surfaces of the third lens 111 and the fourth lens 112 is as follows:
Where X is the concavity of the curved surface parallel to the optical axis 17, c is the curvature at the curved surface pole, r is the perpendicular distance between the point on the aspherical surface and the optical axis 17, K is the conic constant, A, B, C, D, E is the aspherical coefficient.
In the present embodiment, the lateral magnification of the first lens group 11 satisfies the following relation:
-2<beta<-0.5 (2)
where beta is the lateral magnification.
In the present embodiment, when the lateral magnification of the first lens group 11 satisfies the above-described relation (2), the focal length and the moving amount of the first lens group 11 can be controlled within a suitable range, which is advantageous in reducing the total length of the zoom imaging lens 100.
In the present embodiment, the ratio of the maximum focal length and the shortest focal length of the zoom imaging lens 100 is a zoom ratio, which is less than 5. In this way, the overall length of the zoom imaging lens 100 can be kept within a reasonable range, and the zoom imaging lens can be applied to small and portable electronic devices such as digital cameras and cellular phones.
As shown in fig. 1, in the present embodiment, the second lens group 12 may not move along the optical axis 17 as a whole during zooming or focusing of the zoom imaging lens 100.
As shown in fig. 1, in the present embodiment, the second lens group 12 may include a liquid lens assembly 121, a fifth lens 122, a sixth lens 123, a seventh lens 124 and an eighth lens 125. The liquid lens assembly 121, the fifth lens element 122, the sixth lens element 123, the seventh lens element 124 and the eighth lens element 125 are arranged in order from an object side to an image side.
In this embodiment, as shown in fig. 2 and 3, the liquid lens assembly 121 may include a substrate 1213, a fluid 1214, a film 1215, a second mover 1216, a first annular structural member 1217, and a second annular structural member 1218. Fluid 1214 is surrounded by film 1215. In this embodiment, the fluid 1214, the membrane 1215, the second mover 1216 and the first annular structure 1217 are located on the object side of the substrate 1213. In other applications, the fluid 1214, the membrane 1215, the second sub-1216, and the first annular structure 1217 may also be located on the image side of the substrate 1213. The material of the substrate 1213 is a transparent solid material such as a glass plate. The first annular structure 1217 is fixed to the object side of the substrate 1213, and the material of the first annular structure 1217 may be a metal material, but is not limited thereto. The film 1215 is light transmissive and deformable and is made of an elastic transparent material. The shape of the film 1215 may vary depending on the external force received. Wherein the external force can be pushing force or pulling force. The membrane 1215 is fixed in the first annular structure 1217, and the base plate 1213 provides a bearing surface for the membrane 1215. The film 1215 includes a contact portion located on a side of the film 1215 facing the substrate 1213, the contact portion being in contact with a bearing surface of the substrate 1213, the bearing surface of the substrate 1213 being configured to ensure that the contact portion of the film 1215 is not deformed. The side of the membrane 1215 opposite the contact portion is in contact with air. The second mover 1216 is fixed to the opposite side of the film 1215 from the contact portion. The side of the film 1215 opposite to the contact portion is subjected to curvature change by the external force of the second mover 1216. The film 1215 further includes an effective light passing region P1, and the focal length of the liquid lens assembly 121 is changed when the radius of curvature of the effective light passing region P1 is changed. Wherein the direction of movement of the second mover 1216 is opposite to the direction of movement of the center of the film 1215. The second annular structural member 1218 is located at the image side of the substrate 1213, and the projection of the inner wall of the second annular structural member 1218 on the substrate 1213 coincides with the projection of the edge of the effective light-transmitting region P1 on the substrate 1213. The second annular structural member 1218 is opaque and may be metallic. The second annular structural member 1218 is adapted to define an effective light-passing area P1 of the membrane 1215.
Note that the configuration of the liquid lens assembly 121 is not limited to the above. For example, in other embodiments, the substrate may include a flat plate portion and an annular retaining wall, which may be integrally formed and form the receiving space. The film is positioned in the accommodating space and is contacted with the flat plate part and the annular retaining wall, and the other part is contacted with air. The flat plate part provides a bearing surface for the film so as to ensure that the contact part of the film and the bearing surface is not deformed. In one possible implementation, when the liquid lens assembly 121 has a negative or positive focal length, a portion of the film is located in the accommodation space, and when the liquid lens assembly 121 is a planar lens, the entire film is located in the accommodation space. For another example, with respect to second mover 1216, by changing the position of second mover 1216, a force in the opposite direction can be provided so that the direction of movement of second mover 1216 is the same as the direction of movement of the center of film 1215.
In this embodiment, as shown in fig. 2 and 3, the zoom imaging lens 100 further includes a motor 21, the motor 21 includes a first mover 211 and a stator 212, the first mover 211 is movably connected to the stator 212, and the motor 21 is configured to drive the first mover 211 to move along the optical axis 17.
In the present embodiment, as shown in fig. 2 and 3, the second mover 1216 of the liquid lens assembly 121 is fixedly connected with the first mover 211 of the motor 21, for example, the second mover 1216 and the first mover 211 may be bonded and connected, but not limited thereto. The second mover 1216 is movable along the optical axis 17 with the first mover 211 to change the shape of the effective light-transmitting region P1.
In this embodiment, the first mover 211 may be a ring, the ring is a hollow structure, and the hollow portion of the ring may have a circular cross section. The second mover 1216 may be a circular tube. The round tube is of a hollow structure, and the section of the hollow part of the round tube can be round. The thickness of the side wall of the circular tube is larger than that of the side wall of the circular ring. The side round surface of the circular ring can be connected with one end surface of the circular tube in a gluing way. The connection method of the second mover 1216 and the first mover 211 is not limited to the connection method in the present embodiment.
As shown in fig. 3, when the first mover 211 of the motor 21 moves toward the image side along the optical axis 17, the film 1215 may be pressed, and the fluid 1214 may be concentrated toward the center, so that the effective light-transmitting region P1 may be convex toward the object side, forming a convex surface, and the center of the surface of the film contacting the air may be changed toward the object side. In this case, the liquid lens assembly 121 has a positive focal length.
When the first mover 211 of the motor 21 moves toward the object side along the optical axis 17, the film 1215 is stretched, and the fluid 1214 concentrates in the edge direction, so that the effective light-transmitting region P1 is recessed toward the image side, forming a concave surface, and the center of the surface of the film in contact with air is changed toward the image side. In this case, the liquid lens assembly 121 has a negative focal length.
It should be noted that, in the present embodiment, the first mover 211 is directly connected to the second mover 1216, and in other embodiments, the first mover 211 may be indirectly connected to the second mover 1216, depending on the structure of the liquid lens assembly.
In this embodiment, the abbe number of the fluid 1214 is greater than 40, and the material of the fluid 1214 is a low dispersion material, so as to reduce the chromatic aberration variation caused by the focal length variation of the liquid lens assembly 121.
In the present embodiment, as shown in fig. 1, the ninth surface 1211 of the liquid lens assembly 121 facing the object side is variable in shape, and the tenth surface 1212 facing the image side is a plane. As the shape of the ninth surface 1211 changes, the focal length of the liquid lens assembly 121 changes. During zooming or focusing of the zoom imaging lens 100, the focal length of the liquid lens assembly 121 changes and the position of the liquid lens assembly 121 may be unchanged. In this way, there is no need to reserve a moving space for the liquid lens assembly 121 along the optical axis, the total length and volume of the zoom imaging lens 100 can be reduced, and the structure of the zoom imaging lens 100 can be simplified. At the same time, the number of movable lens groups is reduced, so that the assembly tolerance can be reduced, and the manufacturing difficulty is reduced.
In the present embodiment, the fluid 1214 is subjected to an external force, and the focal length of the liquid lens assembly 121 can be changed by changing the shape of the effective light-transmitting region P1. When the zoom imaging lens 100 focuses between infinity and close distance, the position of the first lens group 11 may be kept unchanged, and focusing is further achieved by changing the focal length of the liquid lens assembly 121.
In the present embodiment, as shown in fig. 1, the fifth lens 122 has a positive focal length, a positive diopter, and is a solid lens. An eleventh surface 1221 of the fifth lens 122 facing the object side is concave, and a twelfth surface 1222 facing the image side is convex.
In the present embodiment, as shown in fig. 1, the sixth lens 123 has a positive focal length, a positive diopter, and is a solid lens. The thirteenth surface 1231 of the sixth lens 123 facing the object side is convex, and the fourteenth surface 1232 facing the image side is convex.
In the present embodiment, as shown in fig. 1, the seventh lens 124 has a negative focal length, negative diopter, and is a solid lens. The fifteenth surface 1241 of the seventh lens 124 facing the object side is concave, and the sixteenth surface 1242 facing the image side is concave.
In the present embodiment, as shown in fig. 1, the eighth lens 125 is a solid lens with a negative focal length and negative diopter. The seventeenth surface 1251 of the eighth lens 125 facing the object side is convex, and the eighteenth surface 1252 facing the image side is concave.
In this embodiment, the solid lens material may be glass, plastic, crystalline or semiconductor material structural elements.
In the present embodiment, as shown in fig. 1, the diaphragm 14 is located between the liquid lens assembly 121 and the fifth lens 122, and functions as a field stop. The aperture 14 may be a variable aperture or a fixed aperture.
In the present embodiment, the diameter of the diaphragm 14 is determined according to the size requirement of the module and the specification such as the focal length. The recommended range of the aperture F value of the zoom imaging lens is F1.5-F4.5. Where F-number = lens focal length/lens effective aperture diameter.
In this embodiment, the filter 15 is used to filter out infrared light and ultraviolet light, so as to prevent the infrared light and ultraviolet light from interfering with the imaging of the image sensor 16.
In the present embodiment, the zoom imaging lens 100 may further include a steering prism. A turning prism is located on the object side of the third lens group 13, the turning prism being configured to eject light incident in a first direction to the third lens group 13 in a second direction, the first direction being different from the second direction, and an optical axis 17 extending in the second direction. In this embodiment, the first direction and the second direction may be perpendicular to each other.
In this embodiment, as shown in fig. 1, the distance between the surface vertex of the third lens group 13 facing the object side and the image plane 161 on the optical axis 17 is TTL, the effective image height is IH, and the following relationship can be satisfied by TTL and IH:
TTL/IH<30 (3)
Wherein the effective image height is half the total diagonal length of the effective imaging area of the image sensor 16.
Preferably, TTL and IH satisfy the following relationship:
TTL/IH<25 (4)
When the TTL and the IH satisfy the relation (3) and the relation (4), the total length of the zoom imaging lens 100 can be limited in a suitable range, which is beneficial to using the zoom imaging lens 100 in portable electronic devices and satisfies the miniaturization requirement.
In the present embodiment, the optical configuration data of the image pickup apparatus is shown in table 1. The aspherical data are shown in table 2, where K is the conic constant in the aspherical curve equation, A, B, C, D, E is the 4 th, 6 th, 8 th, 10 th, 12 th order aspherical coefficients of each surface. The corresponding position information at the time of infinity focusing (which may be abbreviated as "infinity focusing") may be shown in table 3, and the corresponding position information at the time of 500mm distance focusing may be shown in table 4.
TABLE 1
| TYPE | surface | R | thi | Nd | Vd | EFL |
| Plane surface | OBJ | inf | D0 | |||
| SPH | 1 | 10.36410 | 0.48 | 1.749 | 25.0 | -58.3 |
| SPH | 2 | 8.20860 | 0.19 | |||
| SPH | 3 | 8.41410 | 1.28 | 1.496 | 81.6 | 17.0 |
| SPH | 4 | 1642.53030 | d1 | |||
| ASP | 5 | -4.09600 | 1.71 | 1.675 | 18.4 | 40.0 |
| ASP | 6 | -4.15690 | 0.50 | |||
| ASP | 7 | -3.72930 | 0.10 | 1.537 | 56.4 | -9.6 |
| ASP | 8 | -13.45550 | d2 | |||
| SPH | 9 | r1 | 0.40 | 1.406 | 99.8 | |
| Plane surface | 10 | inf | 0.21 | 1.52 | 64.20 | |
| Plane surface | 11 | inf | 0.06 | |||
| STO | inf | 0.00 | ||||
| ASP | 13 | 4.41270 | 0.92 | 1.50 | 81.56 | 37.47 |
| ASP | 14 | 5.38370 | 1.10 | |||
| ASP | 15 | 4.94070 | 0.86 | 1.54 | 56.33 | 5.16 |
| ASP | 16 | -6.07750 | 0.14 | |||
| ASP | 17 | -22.00920 | 0.44 | 1.68 | 18.44 | -23.76 |
| ASP | 18 | 59.75440 | 0.54 | |||
| ASP | 19 | 16.73050 | 1.75 | 1.582 | 28.21 | -8.51 |
| ASP | 20 | 3.67460 | 5.49 | |||
| Plane surface | 21 | inf | 0.21 | 1.52 | 64.20 | |
| Plane surface | 22 | inf | 0.50 | |||
| Plane surface | 23 | image | - |
In table 1, surface is an ordinal number of a surface sequentially arranged from the object side toward the image side, for example, a surface of 1 is a first surface 1311, a surface of 2 is a second surface 1312, a surface of 3 is a third surface 1321, a surface of 4 is a fourth surface 1322, a surface of 5 is a fifth surface 1111, a surface of 6 is a sixth surface 1112, a surface of 7 is a seventh surface 1121, a surface of 8 is an eighth surface 1122, a surface of 9 is a ninth surface 1211, a surface of 10 is a surface of the substrate 1213 facing the object side, is a plane, the surface 11 is tenth surface 1212, sto is aperture 14, the surface 13 is eleventh surface 1221, the surface 14 is twelfth surface 1222, the surface 15 is thirteenth surface 1231, the surface 16 is fourteenth surface 1232, the surface 17 is fifteenth surface 1241, the surface 18 is sixteenth surface 1242, the surface 19 is seventeenth surface 1251, the surface 20 is eighteenth surface 1252, the surface 21 is nineteenth surface 151 of the object side facing filter 15, the surface 22 is twenty-first surface 152 of the image side facing filter 15, and the surface 23 is imaging surface (image). OBJ is the object surface in focus.
In table 1, TYPE is the surface profile of the lens, ASP represents an aspherical surface, and SPH represents a spherical surface. R is the radius of curvature and inf is infinite. r1 is the curvature of the ninth surface 1211. thi represents the spacing between adjacent surfaces. Thi is the thickness of the lens when two adjacent surfaces belong to the same lens, and is the air gap when two adjacent surfaces do not belong to the same lens. D0 is the distance from the object-in-focus surface to the vertex of the first lens 131 facing the object side. d1 is the air space between the second lens 132 and the third lens 111, and d2 is the air space between the fourth lens 112 and the liquid lens assembly 121.
In Table 1, nd is a refractive index to d-line, and d-line is light having a wavelength of 587.6 nm. Vd is Abbe number, EFL is focal length in millimeters.
In table 3, Z1, Z2, Z3 are focusing states in which the focal length of the imaging lens 100 is a minimum value, an intermediate value, and a maximum value, respectively, in infinity focusing, that is, wide-angle, intermediate, and telephoto states, respectively. Wherein the median value is a value between the minimum and maximum values, not necessarily the median value. F is the focal length of the imaging lens 100, fno is the aperture F value, and f_ll is the focal length of the liquid lens assembly 121.
Table 4 shows the focal lengths of the imaging lens 100, the first lens group and the second lens group, which correspond to the three focal length states Z1, Z2 and Z3 when focusing at a distance of 500 mm.
TABLE 2
| surface | K | A | B | C | D | E |
| 5 | 2.57249E-01 | 6.69762E-03 | -2.28449E-04 | 2.93040E-05 | 8.83828E-07 | -2.26707E-07 |
| 6 | 0.00000E+00 | 4.09162E-03 | -3.30892E-04 | 8.08947E-05 | -4.20073E-06 | |
| 7 | 0.00000E+00 | 3.52669E-03 | 5.42450E-05 | 1.11718E-04 | -8.52973E-06 | |
| 8 | 0.00000E+00 | 1.92378E-03 | 3.61484E-04 | -2.49817E-05 | 6.11402E-07 | |
| 13 | 0.00000E+00 | -2.14578E-03 | -2.91772E-04 | -3.39852E-05 | -6.41805E-06 | |
| 14 | 0.00000E+00 | -1.51271E-03 | -3.59897E-04 | -6.29605E-05 | -7.88621E-06 | 4.42414E-07 |
| 15 | 2.96546E-02 | -1.30453E-04 | -3.65656E-05 | -1.62141E-05 | 1.55191E-06 | 5.11989E-07 |
| 16 | 0.00000E+00 | 2.97126E-03 | -2.19289E-04 | 1.46025E-05 | 4.23715E-06 | |
| 17 | 0.00000E+00 | 7.14912E-05 | 1.66682E-05 | 9.37416E-07 | 0.00000E+00 | |
| 18 | 0.00000E+00 | 7.41899E-05 | -1.36420E-04 | 6.77780E-06 | 1.80879E-06 | |
| 19 | 0.00000E+00 | -8.99083E-04 | -7.23092E-04 | 2.57785E-05 | 4.69084E-06 | |
| 20 | -3.04221E-02 | -5.73391E-05 | -1.71729E-04 | -7.35153E-05 | 1.56026E-05 | 6.27521E-15 |
TABLE 3 Table 3
TABLE 4 Table 4
In the present embodiment, the spherical aberration, astigmatism and field curvature (ASTIGMATIC FIELD CURVES) and Distortion (DISTORTION) curves at the wide-angle end of the imaging lens 100 are shown in fig. 4. In the spherical aberration curve of fig. 4, the horizontal axis represents the FOCUS (FOCUS) offset in millimeters (MILLIMETERS), and the vertical axis represents the longitudinal spherical aberration (LONGITUDINAL SPHERICAL aber.) in millimeters. The horizontal axis of the pixel and field curve of fig. 4 is the focus offset in millimeters, and the vertical axis is the image height (IMG HT) in millimeters. S and T represent sagittal and meridional directions, respectively. Both contain 470nm, 587.6nm and 656nm profiles centered around 587.6 nm. In the distortion distribution curve of fig. 4, the horizontal axis represents distortion rate, the vertical axis represents image height, and the units are millimeters.
In the present embodiment, the spherical aberration, astigmatism, and field curvature (ASTIGMATIC FIELD CURVES) and Distortion (DISTORTION) curves of the telephoto end of the imaging lens 100 are shown in fig. 5.
The embodiment of the present disclosure also provides an image pickup apparatus including the zoom imaging lens 100 according to any one of the embodiments described above.
An exemplary embodiment of the present disclosure also provides an electronic device. The electronic equipment comprises an equipment body and the imaging device of any embodiment, wherein the imaging device is assembled on the equipment body.
In this embodiment, the electronic device may be a miniaturized electronic device such as a digital camera, a mobile phone, a drone, a monitor, or the like.
In this embodiment, as shown in fig. 6, the electronic apparatus 1000 may further include a control module 1004, a storage module 1006, and a transmission module 1008 in addition to the image capturing device 1002.
In the present embodiment, the control module 1004 is configured to control the zooming and focusing movements of the zoom imaging lens 100, for example, the focal length of the zoom imaging lens 100 can be controlled by controlling the position of the first lens group 11 and the focal length of the liquid lens assembly 121.
In a specific implementation manner, in the present embodiment, the control module 1004 is configured to control the position of the first lens group 11 according to the control signal and the first correspondence relationship, so as to implement zooming or focusing. The first correspondence is a correspondence between control information of the position of the first lens group 11 and the focal length of the zoom imaging lens 100. The control signal may be generated according to a control instruction input by a user, and includes information of a focal length of the zoom imaging lens.
In this embodiment, the control module 1004 further includes a temperature sensor and a distance sensor. The temperature sensor is configured to acquire temperature information of the liquid lens assembly 121, and the distance sensor is configured to detect an imaging distance, which is a distance between the image sensor 16 and the subject. The distance sensor may be a TOF (Time of flight) sensor or an infrared distance sensor, but is not limited thereto. The control module 1004 is further configured to control the focal length of the liquid lens assembly 121 according to the control signal, the acquired temperature information of the liquid lens assembly 121, the detected imaging distance, and the second correspondence, so as to achieve auxiliary zooming and focusing. The second correspondence relationship includes a correspondence relationship among a focal length of the zoom imaging lens 100, an imaging distance, temperature information of the liquid lens assembly 121, and control information of the focal length of the liquid lens assembly at the time of best focusing at the current temperature. In this embodiment, the back focus change and the focus drift caused by the temperature change can be compensated, so that the usable temperature range of the electronic device is enlarged.
It should be noted that the temperature sensor and the distance sensor may be an integral part of the control module 1004, or may be a device independent of the control module 1004.
In the present embodiment, the storage module 1006 is configured to store image information acquired by the image capturing apparatus 1002. The memory module 1006 may be, but is not limited to, an on-board memory such as a flash memory.
In this embodiment, the transmission module 1008 is configured to transmit out image information acquired by the image capturing device 1002. The transmission module 1008 may use one or more connections, such as, but not limited to, a USB interface, an ethernet interface, or a bluetooth wireless connection.
In the present embodiment, as shown in fig. 7, the thickness direction of the electronic apparatus 1000 extends in the first direction H, the short side of the electronic apparatus 1000 extends in the second direction W, and the long side of the electronic apparatus 1000 extends in the third direction L. The first direction H and the second direction W are perpendicular to the third direction L. As shown in fig. 7 to 8, the optical axis 17 of the zoom imaging lens 100 extends in the second direction W. In this way, the electronic device may provide relatively sufficient space for the zoom imaging lens 100 such that the zoom imaging lens 100 is no longer limited by the size of the electronic device when focusing or zooming.
As shown in fig. 8, light is incident on the glass cover 1010 along the first direction H, light transmitted through the glass cover 1010 is incident on the image pickup device 1002 along the first direction H, specifically, light transmitted through the glass cover 1010 is incident on the turning prism along the first direction H, the turning prism emits the incident light to the third lens group 13 along the second direction W, and light emitted from the third lens group 13 is sequentially transmitted through the first lens group 11, the second lens group 12 and the optical filter 15, and finally is incident on the image sensor 16.
In another embodiment, when the short side of the electronic device 1000 extends in the second direction, the long side of the electronic device 1000 may extend in the first direction. In yet another embodiment, when the long side of the electronic device 1000 extends along the second direction, the short side of the electronic device 1000 may extend along the first direction, or the thickness direction of the electronic device 1000 may be the first direction.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (19)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2021/110637 WO2023010350A1 (en) | 2021-08-04 | 2021-08-04 | Zoom imaging lens, camera device, and electronic device |
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| CN116134345A CN116134345A (en) | 2023-05-16 |
| CN116134345B true CN116134345B (en) | 2025-11-28 |
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| CN116320756B (en) * | 2023-05-22 | 2023-07-21 | 中国人民解放军国防科技大学 | Single-binocular combined depth perception system and method based on liquid optical regulation and control |
| CN222028476U (en) * | 2023-12-21 | 2024-11-19 | 比亚迪股份有限公司 | Optical lens, shell structure thereof and optical equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101604035A (en) * | 2008-06-13 | 2009-12-16 | 鸿富锦精密工业（深圳）有限公司 | Liquid lens and lens module including the liquid lens |
| CN101836135A (en) * | 2007-10-08 | 2010-09-15 | 黑眼睛光学有限公司 | Liquid optics zoom lens and imaging apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003344897A (en) * | 2002-05-30 | 2003-12-03 | Olympus Optical Co Ltd | Imaging optical system |
| US7265911B2 (en) * | 2005-08-22 | 2007-09-04 | Eastman Kodak Company | Zoom lens system having variable power element |
| JP4544331B2 (en) * | 2008-04-04 | 2010-09-15 | ソニー株式会社 | Conversion lens device and imaging device |
| JP2014145869A (en) * | 2013-01-29 | 2014-08-14 | Canon Inc | Zoom lens and imaging apparatus having the same |
| JP6877212B2 (en) * | 2017-03-30 | 2021-05-26 | 株式会社タムロン | Zoom lens and imaging device |
| CN112505876B (en) * | 2019-08-28 | 2024-01-16 | 广州得尔塔影像技术有限公司 | Lenses, imaging devices and electronic equipment |
| CN112584001B (en) * | 2019-09-27 | 2023-06-02 | 华为技术有限公司 | Camera module and terminal equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101836135A (en) * | 2007-10-08 | 2010-09-15 | 黑眼睛光学有限公司 | Liquid optics zoom lens and imaging apparatus |
| CN101604035A (en) * | 2008-06-13 | 2009-12-16 | 鸿富锦精密工业（深圳）有限公司 | Liquid lens and lens module including the liquid lens |
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| CN116134345A (en) | 2023-05-16 |
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