Disclosure of Invention
The invention mainly aims to provide a terminal capable of effectively adjusting the focal length of a camera, a focal length adjusting device thereof and a camera device based on the existing camera.
In a first aspect, an embodiment of the present invention provides a focal length adjustment device, including:
at least two lenses;
each lens is in transmission connection with one driving assembly, and each driving assembly can drive the corresponding lens to move to a preset position.
According to the focal length adjusting device provided by the embodiment of the invention, the preset position can be the linear position of the lens of the camera with the focal length to be adjusted, and one or all of the lenses can be controlled to move to the linear position of the lens through the arranged driving assembly, so that the focal length of the camera is adjusted.
Further, in a preferred embodiment of the present invention, the driving assembly includes:
each lens is connected with one end of one transmission rod;
the other end of each transmission rod is in transmission connection with the driving piece, the driving piece can drive the transmission rods to move, and the transmission pieces move to drive the corresponding lenses to move to preset positions.
Further, in a preferred embodiment of the present invention, the present invention further comprises a box body, wherein the driving member is disposed in the box body; the driving piece can drive the transmission rod to move so as to drive the lenses to be contained in the box body.
Further, in a preferred embodiment of the present invention, the number of the box bodies corresponds to the number of the driving assemblies, each driving assembly is disposed in one of the box bodies, and the lenses can be received in the corresponding box bodies.
Further, in a preferred embodiment of the present invention, the transmission rod is a retractable push rod.
Further, in a preferred embodiment of the present invention, the driving member is a driving motor or a ball screw or a hydraulic driving member or an air pump.
Further, in a preferred embodiment of the present invention, there are three lenses, and the three lenses are arranged at intervals along a preset direction at the preset position.
In a second aspect, an embodiment of the present invention provides a camera device, including a lens, a camera assembly, and the focal length adjustment device described in any one of the foregoing;
the focal length adjusting device is positioned between the lens of the camera device and the camera device, or the focal length adjusting device is positioned outside the lens of the camera device.
The camera device provided by the embodiment of the invention is provided with the independently installed or used focal length adjusting device, and when the focal length is required to be adjusted, the focal length adjusting device can be adopted for adjusting without thickening the thickness of the camera.
In a third aspect, an embodiment of the present invention provides a terminal, including the above-mentioned image pickup apparatus.
According to the terminal provided by the embodiment of the invention, the camera device can be internally or externally provided with the focal length adjusting device, and the focal length of the camera can be adjusted on the premise of not changing the thickness of the camera.
Further, in a preferred embodiment of the present invention, a first electrode plate is disposed on the focal length adjustment device, a second electrode plate is disposed on the circuit board of the terminal corresponding to the first electrode plate, and the first electrode plate is electrically connected to the electrode plate to start the driving assembly.
Further, in a preferred embodiment of the present invention, the number of the first electrode sheet and the second electrode sheet is (n +1) or 2n, where n is the number of the lenses.
Detailed Description
In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
The terminal provided by the embodiment of the invention comprises a camera device 2, a circuit board and a shell structure of the circuit board, wherein the camera device 2 can be internally or externally provided with a focal length adjusting device 1, and the focal length of a camera is adjusted on the premise of not changing the thickness of the camera. The imaging device 2 includes: the lens 21, the camera assembly 22 and the focal length adjusting device 1 are arranged, the focal length adjusting device 1 is arranged between the lens 21 of the camera device 2 and the camera device 2, or the focal length adjusting device 1 is arranged outside the lens 21 of the camera device 2. The camera device 2 provided by the embodiment of the invention is provided with the focal length adjusting device 1 which can be independently installed or used, when the focal length needs to be adjusted, the focal length adjusting device 1 can be adopted for adjustment, and the thickness of the camera does not need to be thickened.
As shown in fig. 1 to 4, a focal length adjusting device 1 provided in an embodiment of the present invention includes: at least two lenses 11; each lens 11 is in transmission connection with one driving assembly, and each driving assembly can respectively drive the corresponding lens 11 to move to a preset position. According to the focal length adjusting device 1 provided by the embodiment of the invention, the preset position can be the linear position of the lens 21 of the camera with the focal length to be adjusted, and one or all of the lenses 11 can be controlled to move to the linear position of the lens 21 through the arranged driving assembly, so that the focal length of the camera can be adjusted.
In this embodiment, the preset position is a straight line where the lens 21 of the camera device 2 at the terminal is located, and in the use process, one lens 11, part of the lenses 11 or all the lenses 11 can be selected to be moved to the preset position as required, so as to realize the focal lengths of the camera devices 2 at the adjusting terminals with different effects.
Wherein, drive assembly includes: each lens 11 is connected with one end of one transmission rod 12; the other end of each transmission rod 12 is in transmission connection with the driving part, the driving part can drive the transmission rods 12 to move, and the transmission parts move to drive the corresponding lenses 11 to move to the preset positions.
The driving rod 12 can be provided in various ways, for example, in the form of a connecting rod crankshaft, which is driven by a driving member such as a motor to extend the lens 11 to a preset position, and the driving member drives the connecting rod crankshaft to bend to retract the lens 11 to an initial position.
In this embodiment, the transmission rod 12 is a telescopic push rod, and the driving member is a driving motor or a ball screw or a hydraulic driving member or an air pump. When the driving part adopts a driving motor, the driving motor drives the transmission rod 12 to extend out, and drives the corresponding lens 11 to move to a preset position for focal length adjustment; the driving motor drives the driving rod 12 to retract, and drives the corresponding lens 11 to move back to the initial position; further, the driving assembly in the present embodiment is provided in the structure of an electric push rod or a hydraulic push rod.
In order to accommodate the driving member and the lens 11, as shown in fig. 1-2, the present embodiment further includes a box body 13, and the driving member is disposed in the box body 13; the driving member can drive the transmission rod 12 to move so as to drive the lens 11 to be accommodated in the box body 13. The box body 13 can be regarded as the initial position of each lens 11, and each lens 11 is moved to the preset position by the box body 13 under the drive of the corresponding driving component, so that the focal length of the camera device 2 is adjusted.
In an embodiment of the present invention, when the focal length adjustment device 1 is located between the lens 21 of the camera device 2 and the camera device 2, the focal length adjustment device 1 may be disposed inside the terminal, and the focal length adjustment device 1 is electrically connected to the circuit board to achieve power-on. Specifically, as shown in fig. 1-2, a first electrode sheet 131 is disposed on the box 13, a second electrode sheet is disposed on the terminal circuit board corresponding to the first electrode sheet 131, and the first electrode sheet 131 is electrically connected to the electrode sheet to start the driving assembly.
Here, the number of the first electrode sheet 131 and the second electrode sheet is (n +1) or 2n, where n is the number of the lenses 11.
For example, when three lenses 11 are provided, the box 13 is provided with one first electrode sheet 131 corresponding to the driving component of each lens 11, the three first electrode sheets 131 are all negative electrodes, and then the box 13 is provided with one positive first electrode sheet 131, and the three negative first electrode sheets 131 share one positive first electrode sheet 131, that is, the arrangement form of (n + 1). At this time, the number of the second electrode pieces is four, the number of the second electrode pieces is matched with the polarity of the first electrode pieces 131, the second electrode pieces are three anodes and one cathode, and the first electrode piece 131 of each cathode is electrically connected with the second electrode piece of one anode; the common positive electrode first electrode piece 131 is electrically connected with the negative electrode second electrode piece. When the focal length adjusting device 1 is electrically connected with the terminal, the driving assembly is powered on, and the driving rod 12 is driven to move to drive the corresponding lens 11 to move to a preset position; in the embodiment, the corresponding driving component can be switched on through control at the terminal.
Or, when three lenses 11 are provided, two first electrode sheets 131 are provided on the box 13 corresponding to the driving assembly of each lens 11, and the first electrode sheets 131 are divided into a positive first electrode sheet 131 and a negative first electrode sheet 131, and there are 6 first electrode sheets 131 in total, and no common electrode is involved. Correspondingly, 6 second electrode plates with matched polarities are also arranged on the terminal circuit board. In the embodiment, the number of the electrode plates is large, and the electrode plates occupy more space.
Because the focal length adjusting device 1 in this embodiment is disposed inside the terminal, considering the thickness control of the terminal, the number of the box bodies 13 may correspond to the number of the driving assemblies, each driving assembly is disposed in one box body 13, the lens 11 can be accommodated in the corresponding box body 13, the thickness of the box body 13 is convenient to control, and the above-mentioned manner can be referred to for the connection between each box body 13 and the terminal circuit board. Specifically, each box body 13 can be arranged in the circumferential direction of the preset position, so that each box body 13 needs to be connected with the circuit board respectively.
In another embodiment of the present invention, when the focal length adjustment device 1 is located outside the lens 21 of the camera device 2, the focal length adjustment device 1 can be externally disposed on the housing structure of the terminal, and the focal length adjustment device 1 can be selectively installed when the focal length of the camera needs to be adjusted. At this time, the focal length adjustment device 1 may be mechanically connected to the housing structure, and an electrode contact (refer to the electrode plate of the previous embodiment) may be further disposed on the housing structure to electrically connect the focal length adjustment device 1 to the housing structure, and the electrode contact of the housing structure is in communication connection with the circuit board to energize the focal length adjustment device 1.
Specifically, the shell structure at the terminal is provided with a first magnetic buckle, a second magnetic buckle is arranged at a corresponding position of the box body 13 of the focal length adjusting device 1, and the shell structure is mechanically connected with the focal length adjusting device 1 through magnetic bonding of the first magnetic buckle and the second magnetic buckle. In this embodiment, the focal length adjusting device 1 and the housing structure may be electrically connected as described above, each driving component of the focal length adjusting device 1 may be provided with an independent start switch, and the corresponding switch is manually adjusted to be turned on or turned off, or the switch is in communication connection with a circuit board at the terminal, and the on or off of the driving component switch is controlled by the terminal.
As shown in fig. 1, three lenses 11 are provided in an embodiment of the present invention, when three lenses 11 are required to be used simultaneously for focus adjustment, the three lenses 11 can be driven by their respective corresponding driving assemblies to move to preset positions, and the three lenses 11 are arranged at intervals along a preset direction at the preset positions, as shown in fig. 4-7, which are light ray areas changed by the focus adjustment device 1, specifically, fig. 4 shows the light ray adjustment areas in the case of simultaneously providing three lenses, fig. 5 shows the light ray adjustment areas in the case of separately providing a first lens, fig. 6 shows the light ray adjustment areas in the case of separately providing a second lens, and fig. 7 shows the light ray adjustment areas in the case of separately providing a third lens; in fig. 4, a region a is a light range of the lens 21 of the image pickup device 2 itself, a region B is a light range adjusted by using one lens 11, a region C is a light range adjusted by using two lenses 11 at the same time, and a region D is a light range adjusted by using three lenses 11 at the same time.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. This is merely to facilitate description of the invention and to simplify the description, and is not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.