CN103809347A - Camera aperture and control adjusting method thereof - Google Patents

Abstract

The invention provides a camera aperture and a control adjusting method thereof. The method includes the steps: A) providing current to a magnetic coil module, leading current into a plurality of coils to generate magnetism, generating acting force among magnetic components and the coils, and enabling the magnetic coil module to relatively move forwards and to further drive a plurality of aperture blades connected to the magnetic coil module to move; B) changing the current in the coils, controlling the size of the acting force among the magnetic components and the coils, correspondingly generating multiple impacts, and enabling the magnetic coil module to relatively and reversely move and return to a relative initial position; repeating the step A) and the step B), and controlling the size of the hole diameter of the aperture comprising the aperture blades. The relative forward movement corresponds to the movement direction of enlarging the hole diameter of the aperture, and the relative reverse movement corresponds to the movement direction of decreasing the hole diameter of the aperture.

Description

Camera aperture and its control and adjustment method

technical field

The invention relates to an imaging device, in particular to an aperture of a camera and a method for controlling and adjusting the aperture. The aperture can be enlarged and/or reduced by the movement of the blades.

Background technique

With the thinner and lighter mobile devices, when the camera is integrated with other devices such as mobile phones and tablet computers, the size of the camera needs to be as small as possible to fit the thinner mobile devices.

To achieve miniaturization, the overall size of the camera can be reduced by reducing the size of the aperture. Prior art apertures include complex fin mechanisms and require an actuated stepper motor to operate. The fin structure can be operated by the actuating device to achieve the desired aperture size.

However, there are some problems with the apertures of the prior art. First, the aperture components of the prior art are many and very complicated and may be damaged or stuck; secondly, the shape of the aperture is not completely circular, which will affect the deformation of the image. ; In addition, the relatively large weight and size of the aperture in the prior art cannot be applied to thinner mobile devices, and its complex structure makes its manufacturing process complicated and its manufacturing cost high.

To sum up, providing a camera aperture and its control and adjustment method has become an urgent problem to be solved by those skilled in the art.

The information disclosed in the Background of the Invention section is only intended to deepen the understanding of the general background of the present invention, and should not be considered as an acknowledgment or any form of suggestion that the information constitutes prior art known to those skilled in the art.

Contents of the invention

In order to solve the above problems, the present invention provides a method for controlling and adjusting the aperture of a camera, which is simple to operate and can be adapted to the requirements of thinner mobile devices with simple structure and small volume.

In order to achieve the above object, the present invention provides a method for controlling and adjusting the aperture of a camera, comprising the steps of:

A) Provide current to the magnetic coil module, so that multiple coils will generate magnetism after the current is passed through, resulting in a force between the magnetic component and the coil, thereby causing the magnetic coil module to move relatively forward and further drive the connection to the A plurality of aperture blades of the magnetic coil module move, and the relative positive movement corresponds to a movement direction in which the aperture of the aperture becomes larger;

B) Change the current in the plurality of coils, control the magnitude of the force between the magnetic component and the coil, and generate multiple impacts accordingly, causing the magnetic coil module to move in the opposite direction relative to the original position, the relative reverse movement corresponds to the direction of movement that makes the iris aperture smaller;

Step A) and step B) are repeated multiple times, and then the size of the aperture formed by the aperture blades is controlled.

Preferably, in the magnetic coil module, the plurality of coils are placed in a ring shape and gaps are left between adjacent coils, and the plurality of magnetic components are respectively placed in the gaps and contact the surface of the coils.

Preferably, in the step A), current is supplied to the plurality of coils, so that the magnetic polarity of the contact surface of the coils and the magnetic component is the same, so that the magnetic component or the coil moves;

When the magnetic component moves, the magnetic component hits the surface of the coil adjacent to the other end, causing the magnetic coil module to move, thereby driving the blade to move;

When the coil moves, the coil hits the surface of the magnetic component adjacent to the other end, so that the magnetic coil module moves, and then drives the blade to move.

Preferably, in the step A), within a time interval of 20 ms to 10 ms after the multiple coils are supplied with current, the multiple magnetic components are moved in the same direction and hit the multiple coils, or the multiple coils are The plurality of coils move in the same direction and collide with the plurality of magnetic components, so that the magnetic coil module moves in a relatively positive direction, and correspondingly drives the aperture blades to move in a relatively positive direction.

Preferably, in the step B), after the aperture blades move in a relatively positive direction, the currents in multiple coils are changed to move the magnetic components or the coils in a relatively reverse direction one by one, and return to to the relative initial position; after the plurality of magnetic components or the plurality of coils all return to the relative initial position, the steps in step A) are repeated.

Preferably, in the step B), the changing the current in the multiple coils is changing the amplitude, pulse width or phase of the current in the multiple coils.

Preferably, in the step B), the relative forward movement distance of the magnetic coil module is greater than the relative reverse movement distance.

The invention also provides a camera aperture which can be applied to thinner mobile devices with simple structure and small volume.

In order to achieve the above purpose, the camera aperture includes a plurality of blades, a magnetic coil module, an auxiliary device for conducting force and a base, wherein:

The magnetic coil module includes a plurality of separated magnetic components arranged on the circular guide rail and a plurality of coils corresponding to the plurality of magnetic components, the magnetic coil module is installed in the auxiliary device for conducting force and can drive said auxiliary means for transmitting force moves;

The plurality of blades are pivotally installed in the auxiliary device for transmitting force and connected to the base;

After the plurality of coils are fed with current, a force is generated between the magnetic component and the coil to make the magnetic coil module move in a relatively forward direction or in a relatively reverse direction, and drive the auxiliary device for conducting force Move according to the corresponding direction, thereby driving the movement of the blades; wherein, the relative positive movement corresponds to the movement direction in which the movement of the blades makes the aperture of the aperture larger, and the relative reverse movement corresponds to the direction in which the movement of the blades makes the aperture of the aperture smaller. direction of motion.

Preferably, the base includes a first bearing seat, a second bearing seat parallel to the first bearing seat, and a plurality of fixed shafts arranged between the first bearing seat and the second bearing seat, and the blades are provided with fixed shafts hole, and the fixed shaft passes through the fixed shaft hole.

Preferably, the auxiliary device for transmitting force includes a transmission part and a base, the transmission part and the base are fixedly connected, the plurality of blades are pivotally mounted on the base, and the magnetic coil module is set In the transmission part; the base is provided with a motion shaft, the blade is provided with a motion shaft hole, and the motion shaft passes through the motion shaft hole.

Preferably, the transmission component is provided with a convex portion/concave portion, and the base is provided with a corresponding concave portion/convex portion, and the transmission component and the base are connected through the convex portion and the concave portion.

Preferably, the base is arranged on one side of the camera aperture, and the base is arranged on the other side of the camera aperture, and the transmission part and the blade are arranged between the base and the base between.

Preferably, the moving shaft hole is arranged outside the fixed shaft hole.

Preferably, a drive circuit for supplying current to the magnetic coil module is also included.

Preferably, the plurality of coils are arranged in a ring shape and gaps are left at both ends of adjacent coils, and the magnetic component is placed in the gaps and contacts the surface of the coils.

Preferably, the number of the plurality of magnetic components and coils is an even number.

Preferably, the plurality of magnetic components have the same size and shape and are uniformly arranged on the guide rail.

Preferably, the magnetic properties of adjacent magnetic poles among the plurality of magnetic components are the same.

Preferably, an iron core can be placed in the coil.

In addition, the present invention also provides a camera device, including the camera aperture mentioned above.

The beneficial effects of the present invention are: the control and adjustment method of the camera aperture of the present invention can easily control the movement of the aperture blades by changing the magnitude of the current passed into the magnetic coil module, and then control the size of the aperture formed by the aperture blades. On the other hand, the aperture of the camera of the present invention is simple in structure, and the volume of the aperture is greatly reduced by adopting the ring-shaped magnetic coil module, and the complexity of realizing the aperture of the camera is significantly reduced.

Description of drawings

Other features and advantages of the present invention will become clear or be more specifically explained through the accompanying drawings and the following specific embodiments used to illustrate some principles of the present invention together with the accompanying drawings.

FIG. 1 is a schematic diagram of a magnetic coil module of a camera aperture according to an embodiment of the present invention after passing a current.

FIG. 2 is a schematic diagram of the magnetic coil module of the camera aperture according to an embodiment of the present invention after the current in the direction opposite to that of FIG. 1 is passed through.

Fig. 3 is an overall external top view of the camera aperture according to an embodiment of the present invention.

FIG. 4 is a side cross-sectional view of the camera aperture along the direction A-A according to FIG. 3 according to an embodiment of the present invention.

FIG. 5 is a schematic diagram showing blades of a camera aperture and a magnetic coil module according to an embodiment of the present invention.

FIG. 6 is a schematic perspective view of a camera aperture according to an embodiment of the present invention.

FIG. 7 is an exploded schematic view showing the fixed axis and the moving axis of the camera aperture according to an embodiment of the present invention.

FIG. 8 is a partially enlarged schematic diagram showing the fixed axis and the moving axis of the camera aperture according to an embodiment of the present invention.

FIG. 9 is a partial perspective view of a camera aperture according to an embodiment of the present invention.

It should be understood that the drawings in the specification do not necessarily show the specific structure of the invention to scale, and that the illustrative features used to illustrate some principles of the invention in the drawings in the specification are also drawn in a somewhat simplified manner. The specific design features of the invention disclosed herein, including, for example, specific dimensions, orientations, locations and shapes will be determined in part by the particular intended application and use environment.

Throughout the several figures of the drawing of the specification, the same reference numbers refer to the same or equivalent parts of the present invention.

Detailed ways

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar extensions without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

The invention provides a camera aperture, which includes a plurality of blades, a magnetic coil module, an auxiliary device for conducting force, and a base, wherein the magnetic coil module includes a plurality of separated magnetic components arranged on an annular guide rail With a plurality of coils corresponding to a plurality of magnetic components, the magnetic coil module is installed in the auxiliary device for transmitting force and can drive the auxiliary device for transmitting force to move, and the plurality of blades pivot ground mounted on the base and connected to the auxiliary device for transmitting force.

In the camera aperture of this embodiment, the plurality of coils are placed in a ring shape and gaps are left at both ends of adjacent coils, and the magnetic component is placed in the gaps and contacts the surface of the coils. The number of the plurality of magnetic components and coils is an even number, such as 2, 4, or 6, but the present invention is not limited thereto, and other even numbers of magnetic components can also be used, and preferably the plurality of magnetic components The size and shape of the coils are the same and uniformly arranged on the guide rail, the magnetism of the adjacent magnetic poles between the multiple magnetic components is the same, and an iron core can also be placed in the coil.

In this embodiment, the base includes a first bearing seat, a second bearing seat parallel to the first bearing seat, and a plurality of fixed shafts arranged between the first bearing seat and the second bearing seat, and the blades are arranged There is a fixed shaft hole, and the fixed shaft passes through the fixed shaft hole; the auxiliary device for transmitting force includes a transmission part and a base, and the transmission part and the base are fixedly connected, and the magnetic coil module is arranged on the transmission part Inside; the base is provided with a motion shaft, the blade is provided with a motion shaft hole, and the motion shaft passes through the motion shaft hole; the motion shaft hole is set outside the fixed shaft hole; the base is set on One side of the aperture of the camera, and the base is arranged on the other side of the aperture of the camera, and the transmission part and the blade are arranged between the base and the base. In addition, the transmission component is provided with a convex portion/concave portion, and the base is provided with a corresponding concave portion/concave portion, and the transmission component and the base are connected through the convex portion and the concave portion.

After the plurality of coils are fed with current, a force is generated between the magnetic component and the coil to make the magnetic coil module move in a relatively forward direction or in a relatively reverse direction, and drive the auxiliary device for conducting force Move according to the corresponding direction, thereby driving the movement of the blades; wherein, the relative positive movement corresponds to the movement direction in which the movement of the blades makes the aperture of the aperture larger, and the relative reverse movement corresponds to the direction in which the movement of the blades makes the aperture of the aperture smaller. direction of motion.

In addition, the camera aperture also includes a drive circuit for supplying current to the magnetic coil module.

The camera aperture of the present invention can be applied to camera devices such as mobile phones, video cameras, cameras, ipads and the like.

The present invention also provides a method for controlling and adjusting the aperture of the camera, comprising the following steps:

A): Provide a current to the magnetic coil module, the magnetic coil module includes a plurality of separated magnetic components and a plurality of coils corresponding to the plurality of magnetic components, so that the plurality of coils generate Magnetism, causing an acting force between the magnetic component and the coil, causing the magnetic coil module to move relatively forward and further driving a number of aperture blades connected to the magnetic coil module to move, the relative forward movement corresponds to making The direction of movement in which the iris aperture becomes larger. In this embodiment, in the magnetic coil module, the plurality of coils are placed in a ring shape and gaps are left between adjacent coils, and the plurality of magnetic components are respectively placed in the gaps and are in contact with the surface of the coil.

Specifically, in step A, current is supplied to the plurality of coils, so that the magnetic polarities of the contact surfaces of the coils and the magnetic component are the same, and the magnetic component or the coils are moved.

Within a time interval of less than 0ms to 5ms after the plurality of coils are supplied with current, the plurality of magnetic components are moved in the same direction and hit the plurality of coils, or the plurality of coils are moved in the same direction and hit the The plurality of magnetic components, so that the magnetic coil module moves in a relatively positive direction, and correspondingly drives the aperture blades to move in a relatively positive direction, and the relative positive movement corresponds to increasing the aperture of the aperture direction of movement.

When the magnetic component moves, the magnetic component hits the surface of the coil adjacent to the other end, so that the magnetic coil module moves, and then drives the blade to move.

When the coil moves, the coil hits the surface of the magnetic component adjacent to the other end, so that the magnetic coil module moves, and then drives the blade to move.

B): Change the current in the plurality of coils, control the magnitude of the force between the magnetic component and the coil, and generate multiple impacts accordingly, causing the magnetic coil module to move in the opposite direction relative to each other and return to the relative In the initial position, the relative reverse movement corresponds to the direction of movement that makes the aperture of the diaphragm smaller; wherein, the changing of the current in the plurality of coils is changing the amplitude, pulse width or phase of the current in the plurality of coils, etc. Parameters, the change of the current is realized by the drive circuit, so that the plurality of coils produce the opposite magnetism to that in step A after the current is applied.

Specifically, in step B, after the aperture blades move in a relatively positive direction, change the currents in multiple coils to move the magnetic components or the coils in a relatively reverse direction one by one, and return to Relative to the initial position, wherein the relative forward movement distance of the magnetic coil module is greater than its relative reverse movement distance; after the plurality of magnetic components or the plurality of coils all return to the relative initial position, repeat the steps Steps in A.

Step A and step B are repeated multiple times to further control the size of the aperture formed by the aperture blades.

In the following, specific embodiments of the present invention will be described in conjunction with the accompanying drawings. Referring now to Fig. 1 to Fig. 9 at the same time, the camera aperture and its control and adjustment method of the present invention will be introduced. Wherein Fig. 1 is the schematic diagram after the magnetic coil module of the camera aperture according to the embodiment of the present invention passes through a current; Fig. 2 is according to the embodiment of the present invention the magnetic coil module of the camera aperture passes through a Schematic diagram behind the current; Fig. 3 is an overall external top view of the camera aperture according to an embodiment of the present invention; Fig. 4 is a side sectional view of the camera aperture according to an embodiment of the present invention along the A-A direction of Fig. 3; Fig. 5 is a diagram showing A schematic diagram of the blades and the magnetic coil module of the camera aperture according to an embodiment of the present invention is shown, wherein the base 10 is removed and the internal structure seen from the B direction; FIG. 6 is a camera aperture according to an embodiment of the present invention Figure 7 is a schematic diagram showing the fixed axis and the moving axis of the camera aperture according to an embodiment of the present invention, wherein the base 12 and the transmission part 13 are removed; Figure 8 is a schematic diagram showing the fixed axis in Figure 7 A partial enlarged schematic diagram of the motion axis; FIG. 9 is a partial perspective schematic diagram of the camera aperture according to an embodiment of the present invention.

The camera aperture comprises a plurality of blades 11 , a magnetic coil module, an auxiliary device for conducting force and a base 12 . As shown in Figure 1, the magnetic coil module includes four magnetic components M1, M2, M3 and M4 and four coils S1, S2, S3 and S4 corresponding to these four magnetic components, the coils S1, S2, S3 and S4 The ring is placed on the guide rail (not shown in the figure) and there is a gap between the adjacent coils, and an iron core is set in each coil; the magnetic components M1, M2, M3 and M4 are respectively placed in the coils S1 and S4, In the gaps between S1 and S2, S2 and S3, and S3 and S4, and contact the surface of the adjacent coil. The coils S1, S2, S3 and S4 are supplied with electric current through a drive circuit (not shown in the figure), and the coils S1, S2, S3 and S4 generate magnetism after electrification, so that force is generated between the coils and the magnetic components.

In this embodiment, the number of blades shown is 8, and the number of magnetic parts and coils is 4 respectively; however, the number of blades, magnetic parts and coils can be selected according to needs, for example, there are 6 blades, and the number of magnetic parts and coils is 6 respectively. indivual.

Referring to Fig. 4 and Fig. 5, wherein, the magnetic components M1, M2, M3 and M4 and the coils S1, S2, S3 and S4 are arranged at intervals in guide rails arranged in a ring, and the magnetic components M1, M2, M3 and M4 Identical in size and shape and set evenly on the rails. In addition, the magnetic properties of adjacent magnetic poles between the magnetic members M1, M2, M3, and M4 are the same.

Please refer further to FIG. 3 , wherein, the B side shown in the figure is the front side corresponding to the camera aperture, through which the base 10 and the eight blades 11 located inside the camera aperture can be displayed. The magnetic coil module includes coils S1, S2, S3 and S4 and magnetic components M1, M2, M3 and M4, and is connected to the blade 11 through a corresponding device, and the corresponding device is an auxiliary device for conducting force; The auxiliary device for transmitting force described in this embodiment includes a transmission component 13 , a base 10 and a plurality of motion axes 101 . As shown in Figures 5 and 7, the blades 11 are installed in the base 10 to form an adjustable aperture, the transmission part 13 has a plurality of protrusions 131 uniformly arranged on the circumference, and the base 10 has a The corresponding plurality of recesses 103 arranged evenly on the circumference are matched with the plurality of protrusions, and when combined together, the plurality of protrusions are inserted into the plurality of recesses. Of course, the protrusions and recesses can be interchanged, that is, a plurality of recesses are provided on the transmission component 13 , while a plurality of corresponding protrusions are provided on the base 10 . As shown in FIG. 4 , the magnetic coil module is fixed in the transmission part 13 , so that when the magnetic coil module rotates, it can drive the transmission part 13 to rotate together.

Referring further to FIG. 5 , the blade 11 has a fixed shaft hole 111 and a moving shaft hole 112 penetrating through the blade. These blades 11 are arranged on a plane perpendicular to the optical axis direction and arranged around a center of a circle. The combination of blades 11 realizes a variable light-transmitting aperture.

Please refer to Fig. 4, Fig. 6, Fig. 7 and Fig. 9 at the same time, wherein, the front of the camera aperture is the B surface, and the back is the C surface. As shown in Fig. 4, the camera aperture also includes: a base 12 positioned at the C surface, and a fixed The carrying part (not marked) arranged on the base 12 , the base 12 is disposed close to the lens, the carrying part includes a first carrying seat 104 and a second carrying seat 105 parallel to the first carrying seat 104 . Wherein, the first bearing base 104 and the second bearing base 105 are arranged in parallel and are circular; the first bearing base 104 is connected to the second bearing base 105 through a plurality of fixed shafts 102, and the first bearing base 104 is connected to the second bearing base 105 through a plurality of fixed shafts 102, and A bearing seat 104 can provide better support; the fixed shaft 102 is arranged at equal intervals along the inner circumference of the first bearing seat 104 between the first bearing seat 104 and the second bearing seat 105; the fixed shaft 102 passes through the fixed shaft holes 111 of the respective blades to rotatably connect the blades 11 , its function is to make the blades 11 pivot around the fixed shafts 102 , and the number of the fixed shafts 102 is equal to the number of the blades 11 .

When the transmission component 13 is driven, the base 10 can rotate together with the transmission component 13 . The base 10 is also provided with a plurality of extended moving shafts 101 , the moving shafts 101 are located outside relative to the fixed shafts, and the number of the moving shafts 101 is the same as the number of the blades 11 . The moving shaft 101 is connected to the blade 11 through the moving shaft hole 112 .

Please refer to FIG. 8 and FIG. 9 . FIG. 8 depicts a schematic diagram of the relative positions of the fixed shaft 102 and the moving shaft 101 . It can be seen that the base 10 is connected to the blade 11 through the corresponding moving shaft 101 . And drive the blade 11 to change in a certain position, the fixed shaft 102 is fixed on the base 12 of the C surface through the bearing part (not shown in the figure), and plays the role of fixing the blade 11. The blade 11 is relatively fixed to the fixed shaft 102. Do circular motion under the drive of motion shaft 101. That is: when the magnetic coil module is supplied with current to perform circular motion, the transmission part 13 and the base 10 are rotated relative to the base 12; since the blade 11 is connected to the base 10 and the base 12 through the moving shaft 101 and the fixed shaft 102 respectively , so driven by the moving shaft 101, the blade 11 rotates around the fixed shaft 102, thereby completing the change of the aperture.

In this embodiment, the movement of the magnetic components M1, M2, M3 and M4 is limited (that is, in the moving magnet mode), and the corresponding magnetic components M1, M2, M3 and M4 are respectively fixedly connected to the transmission component 13 located outside them. When the magnetic components M1 , M2 , M3 and M4 move, they correspondingly drive the transmission component 13 to move circularly in one direction. The transmission part 13 is fixedly connected to the base 10 located on the B surface, and the base 10 is provided with 8 extended motion shafts 101, that is, 8 motion shaft holes 112 respectively corresponding to the 8 blades 11; please simultaneously 4, 5 and 8, the fixed shaft 102 is connected to the blade 11 through the fixed shaft hole 111, and the moving shaft 101 is connected to the blade 11 through the moving shaft hole 112. As mentioned above, the fixed The shaft 102 makes the blade 11 disposed inside the overall camera aperture, and the motion shaft 101 passes through the movement of the magnetic components M1, M2, M3 and M4 via the transmission part 13 and then via the motion shaft of the base 10 101 drives the blades 11 to move relative to each other, and the shape of the combination of the eight blades 11 increases or decreases the diameter of the aperture through which the light passes due to the visible relative clockwise or counterclockwise movement.

When the current provided makes the contact surfaces of the coil S1 and the magnetic component M2, the coil S2 and the magnetic component M3, the coil S3 and the magnetic component M4, and the contact surfaces of the coil S4 and the magnetic component M1 have the same magnetism, after the current is applied, the magnetic field is less than 0 Within a time interval of ~5 ms, preferably 5 ms, due to the force between the coils of the same polarity and the magnetic parts, the magnetic parts M1, M2, M3 and M4 move clockwise along the guide rail, thereby passing through the transmission part 13 The blade 11 is driven to move clockwise along the guide rail via the base 10 and then via the motion shaft 101 of the base 10 , that is, to move in a relatively positive direction to enlarge the aperture of the aperture, thereby opening the aperture.

Change the current in the coils S1, S2, S3 and S4 (for example, change the phase of the current), and control the magnitude of the force between the magnetic parts M1, M2, M3 and M4 and the coils S1, S2, S3 and S4 , and correspondingly generate multiple impacts, causing the magnetic components M1, M2, M3 and M4 to move counterclockwise along the guide rail, thereby driving the blades through the transmission component 13 via the base 10 and then via the motion shaft 101 of the base 10 11 Move counterclockwise along the guide rail, that is, move in the opposite direction to make the aperture of the aperture smaller, return to the relative initial position, and close the aperture.

By repeating the above process of controlling parameters such as the amplitude, pulse width or phase of the current in the coil, the magnetic coil module drives the blades of the aperture in the relative forward direction and the relative reverse direction, wherein the magnetic coil module is relatively positive The movement distance in the opposite direction is greater than the movement distance in the opposite direction, thereby changing the diameter of the opening formed by the aperture blades, thereby adjusting the amount of light passing through the aperture opening.

In another embodiment, the movement of the coils S1, S2, S3 and S4 is limited (that is, in the fixed magnetization mode), and the corresponding coils S1, S2, S3 and S4 are respectively fixedly connected to the transmission part 13 located outside them. When the coils When S1, S2, S3 and S4 move, the corresponding driving transmission part 13 moves circularly in one direction. Motion shaft 101, that is, 8 motion shafts 101 respectively corresponding to 8 blades 11; please refer to Fig. 4, Fig. 5 and Fig. 8 at the same time, the fixed shaft 102 is connected with the blade 11 through the fixed shaft hole 111, and the The motion shaft 101 is connected to the blades 11, 51, 11 through the motion shaft hole 112. As mentioned above, the fixed shaft 102 makes the blade 11 fixed inside the aperture of the overall camera, and the motion shaft 101 passes through the coil The movement of S1, S2, S3 and S4 drives the blades 11 to move relative to each other through the transmission part 13 and then through the motion shaft 101 of the base 10. The combined shape of the eight blades 11 is due to the visible relative Movement clockwise or counterclockwise causes the aperture of the aperture through which the light passes to become larger or smaller.

When the current provided makes the contact surfaces of the coil S1 and the magnetic component M2, the coil S2 and the magnetic component M3, the coil S3 and the magnetic component M4, and the contact surfaces of the coil S4 and the magnetic component M1 have the same magnetism, less than 20 ms after the current is applied During the time interval, due to the force between the coils of the same polarity and the magnetic parts, the coils S1, S2, S3 and S4 move clockwise along the guide rail, so that the transmission part 13 passes through the base 10 and then passes through the The movement shaft 101 of the base 10 drives the blade 11 to move clockwise along the guide rail, that is, to move in a relatively positive direction to enlarge the aperture of the aperture, thereby opening the aperture.

Change the current in the coils S1, S2, S3 and S4 (for example, change the phase of the current), and control the magnitude of the force between the magnetic parts M1, M2, M3 and M4 and the coils S1, S2, S3 and S4 , and correspondingly generate multiple impacts, causing the magnetic components M1, M2, M3 and M4 to move counterclockwise along the guide rail, thereby driving the blades through the transmission component 13 via the base 10 and then via the motion shaft 101 of the base 10 11 Move counterclockwise along the guide rail, that is, move in the opposite direction to make the aperture of the aperture smaller, return to the relative initial position, and close the aperture.

It should be pointed out that the method of supplying current to the magnetic coil can be provided by the power supply device provided with the camera aperture or externally, and the magnetic coil can be physically attached and contacted through conductive parts, wires, etc.; it can also be provided by wireless transmission. Current; the method is technical information well known to those skilled in the art, and will not be described in detail here.

The above embodiments are used to illustrate the principles and effects of the present invention, but the present invention is not limited to the above embodiments. Those skilled in the art can modify the above-mentioned embodiments within the protection scope of the claims without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be covered by the claims of the present invention.

Claims (20)

1. A control and adjustment method of a camera aperture, said method comprising the steps of: A) Provide current to the magnetic coil module, so that multiple coils will generate magnetism after the current is passed through, resulting in a force between the magnetic component and the coil, thereby causing the magnetic coil module to move relatively forward and further drive the connection to the A plurality of aperture blades of the magnetic coil module move, and the relative positive movement corresponds to a movement direction in which the aperture of the aperture becomes larger; B) Change the current in the plurality of coils, control the magnitude of the force between the magnetic component and the coil, and generate multiple impacts accordingly, causing the magnetic coil module to move in the opposite direction relative to the original position, the relative reverse movement corresponds to the direction of movement that makes the iris aperture smaller; Step A) and step B) are repeated multiple times, and then the size of the aperture formed by the aperture blades is controlled. 2. The control and adjustment method of the camera aperture according to claim 1, characterized in that: in the magnetic coil module, the plurality of coils are placed in a ring and there is a gap between adjacent coils, and the plurality of magnetic coils Parts are respectively placed in the gaps and contact the surface of the coil. 3. The control and adjustment method of the camera aperture according to claim 1, characterized in that: in the step A), current is supplied to the plurality of coils, so that the contact surface between the coils and the magnetic components the magnetic polarity is the same, moving the magnetic part or the coil; When the magnetic component moves, the magnetic component hits the surface of the coil adjacent to the other end, causing the magnetic coil module to move, thereby driving the blade to move; When the coil moves, the coil hits the surface of the magnetic component adjacent to the other end, so that the magnetic coil module moves, and then drives the blade to move. 4. The method for controlling and adjusting the aperture of a camera according to claim 3, characterized in that: in the step A), within the time interval of 0ms to 5ms after the plurality of coils are supplied with current, the Multiple magnetic components move in the same direction and hit the multiple coils, or make the multiple coils move in the same direction and hit the multiple magnetic components, so that the magnetic coil module moves in a relatively forward direction, and Correspondingly, the aperture blades are driven to move in a relatively positive direction. 5. The method for controlling and adjusting the aperture of a camera according to claim 1, characterized in that: in the step B), after the aperture blades move in a relatively forward direction, the currents in multiple coils are changed one by one Make the magnetic components or the coils move in a relatively opposite direction and return to the relative initial position; after the multiple magnetic components or the multiple coils are all returned to the relative initial positions, repeat step A) step. 6. The method for controlling and adjusting the aperture of a camera according to any one of claims 1 to 5, characterized in that: in the step B), the changing the current in the multiple coils is changing the current in the multiple coils The amplitude, pulse width or phase of the current. 7 . The method for controlling and adjusting the aperture of the camera according to claim 6 , wherein in the step B), the moving distance of the magnetic coil module relative to the forward direction is greater than its relative moving distance in the reverse direction. 8 . 8. A camera aperture, characterized in that: the camera aperture includes a plurality of blades, a magnetic coil module, an auxiliary device for conducting force and a base, wherein: The magnetic coil module includes a plurality of separated magnetic components arranged on the circular guide rail and a plurality of coils corresponding to the plurality of magnetic components, the magnetic coil module is installed in the auxiliary device for conducting force and can drive said auxiliary means for transmitting force moves; The plurality of blades are pivotally installed in the auxiliary device for transmitting force and connected to the base; After the plurality of coils are fed with current, a force is generated between the magnetic component and the coil to make the magnetic coil module move in a relatively forward direction or in a relatively reverse direction, and drive the auxiliary device for conducting force Move according to the corresponding direction, thereby driving the movement of the blades; wherein, the relative positive movement corresponds to the movement direction in which the movement of the blades makes the aperture of the aperture larger, and the relative reverse movement corresponds to the direction in which the movement of the blades makes the aperture of the aperture smaller. direction of motion. 9. The camera aperture according to claim 8, characterized in that: the base comprises a first bearing seat and a second bearing seat parallel to the first bearing seat and is arranged between the first bearing seat and the second bearing seat a plurality of fixed shafts, the blades are provided with fixed shaft holes, and the fixed shafts pass through the fixed shaft holes. 10. The camera aperture according to claim 9, wherein the auxiliary device for transmitting force comprises a transmission part and a base, the transmission part and the base are fixedly connected, and the plurality of blades are pivoted Installed on the base, the magnetic coil module is arranged in the transmission part; the base is provided with a motion shaft, the blade is provided with a motion shaft hole, and the motion shaft passes through the motion shaft hole. 11. The camera aperture according to claim 10, characterized in that: the transmission component is provided with a convex portion/concave portion, and the base is provided with a corresponding concave portion/convex portion, and the transmission component and the base pass through the convex portion Parts and recesses are connected. 12. The camera aperture according to claim 11, characterized in that: the base is arranged on one side of the camera aperture, and the base is arranged on the other side of the camera aperture, the transmission part and The blade is disposed between the base and the base. 13 . The camera aperture according to claim 12 , wherein the moving shaft hole is arranged outside the fixed shaft hole. 14 . 14. The camera aperture according to claim 13, wherein the camera aperture further comprises a driving circuit for supplying current to the magnetic coil module. 15. The camera aperture according to claim 14, characterized in that: the plurality of coils are placed in a ring and gaps are left at both ends of adjacent coils, the magnetic components are placed in the gaps and are in contact with the coils. surface of the coil. 16 . The camera aperture according to claim 15 , wherein the number of the plurality of magnetic components and coils is an even number. 17. The camera aperture according to claim 16, wherein the plurality of magnetic components have the same size and shape and are evenly arranged on the guide rail. 18. The camera aperture according to claim 17, wherein the magnetism of adjacent magnetic poles among the plurality of magnetic components is the same. 19. The camera aperture according to claim 18, characterized in that: an iron core can be placed in the coil. 20. An imaging device, characterized in that the imaging device comprises the camera aperture according to any one of claims 8-19.

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