阅读说明：本技术 一种连续可变光圈装置 (Continuous iris diaphragm device ) 是由 龚高峰 王建华 于 2019-10-28 设计创作，主要内容包括：本发明公开了一种连续可变光圈装置,包括光圈组件以及驱动组件,所述驱动组件包括驱动线圈、位置传感器以及驱动推块,所述驱动推块上设置有驱动磁石以及霍尔磁石,所述驱动线圈以及位置传感器与所述驱动推块相向对应设置,所述光圈组件上设置有旋转盘片以及光圈叶片,所述驱动线圈通电后使得所述驱动推块定向移动,带动所述旋转盘片转动进而控制所述光圈叶片的缩放；本发明中采用驱动线圈与驱动磁石配合来实现光圈叶片的缩放,在有限的安置空间内研发一种以最短时间就可充分曝光的小型化的连续可变光圈技术,并且运用于智能手机等摄像上面,以增进现有手机等的拍摄体验和效果,提高了用户的拍照体验。(The invention discloses a continuous variable aperture device, which comprises an aperture assembly and a driving assembly, wherein the driving assembly comprises a driving coil, a position sensor and a driving push block, the driving push block is provided with a driving magnet and a Hall magnet, the driving coil and the position sensor are oppositely and correspondingly arranged with the driving push block, the aperture assembly is provided with a rotary disc and aperture blades, and after the driving coil is electrified, the driving push block is driven to move directionally to drive the rotary disc to rotate so as to control the aperture blades to zoom; according to the invention, the driving coil and the driving magnet are matched to realize the zooming of the aperture blades, a miniaturized continuous variable aperture technology capable of fully exposing in the shortest time is developed in a limited arrangement space, and the continuous variable aperture technology is applied to the camera shooting of a smart phone and the like so as to improve the shooting experience and effect of the existing mobile phone and the like and improve the shooting experience of a user.)

1. The continuous variable aperture device is characterized by comprising an aperture assembly and a driving assembly, wherein the driving assembly comprises a driving coil, a position sensor and a driving push block, the driving push block is provided with a driving magnet and a Hall magnet, the driving coil and the position sensor are oppositely arranged corresponding to the driving push block, the aperture assembly is provided with a rotating disc and aperture blades, and after the driving coil is electrified, the driving push block is driven to move directionally to drive the rotating disc to rotate so as to control the aperture blades to zoom.

2. The continuous variable aperture device according to claim 1, wherein the driving assembly further comprises a PCB board, the driving coil and the position sensor being disposed on the PCB board.

3. The continuous variable aperture stop apparatus according to claim 2, wherein three of the driving coils are arranged side by side on the PCB board, wherein a current direction of the middle driving coil is opposite to a current direction of the adjacent two driving coils.

4. The continuous variable aperture stop apparatus according to claim 1, wherein the driving magnet is a multi-stage magnet, and N, S stages are uniformly distributed on a surface of the driving magnet opposite to the driving coil.

5. The continuous variable aperture device according to claim 1, wherein a linkage spring is disposed between the driving push block and the rotating disk, a spring hole is disposed on the linkage spring, a spring mounting position is disposed on the aperture assembly, a positioning post is disposed at the spring mounting position, and the spring hole is engaged with the positioning post; the driving push block is connected with the rotating disk through the linkage reed and the driving pin, the driving pin is arranged at one end of the driving push block, a clamping hole is formed in the driving pin, and the clamping hole is matched with a rotating column arranged on the rotating disk.

6. The continuous variable aperture device according to claim 5, wherein a linkage spring is disposed between each of the two ends of the driving push block and the aperture assembly, wherein a connection column is disposed at a connection position of the driving push block and the linkage spring, and the connection column is connected with the spring hole of the linkage spring in a matching manner.

7. The continuous variable aperture device according to claim 1, wherein a plurality of rotary cylinders are provided on the rotary disc, and wherein the aperture blade is provided with a strip-shaped hole through which the aperture blade is fitted to the rotary cylinder.

8. The continuous variable aperture stop apparatus according to claim 7, wherein the rotating disk is an annular structure and is disposed on a lower base, the lower base is provided with an annular groove, and an opening is formed on one side of the annular groove for connecting the rotating disk and the driving assembly.

9. The continuous variable aperture stop device according to claim 8, wherein a plurality of fixing posts are further provided on the lower base, the fixing posts are disposed adjacent to the rotating post, and a circular hole connected to the fixing posts is further provided on the stop blade.

10. The continuous variable aperture stop apparatus according to claim 9, wherein an aperture base plate is disposed between the rotating disk and the aperture blades, and the aperture base plate has a plurality of arc-shaped grooves and through holes for the rotating and fixed pillars to pass through.

11. The continuous variable aperture device according to claim 8, wherein a plurality of hole grooves are provided on an annular bottom wall of the annular groove, and balls are provided in the hole grooves; or, a plurality of bulges are arranged on the bottom wall of the rotating disk.

Technical Field

The invention relates to the technical field of diaphragm manufacturing, in particular to a continuous variable diaphragm device.

Background

Since the advent of smart phones, the public has used mobile phones rather than cameras to take pictures because of the functions of taking pictures and recording videos of smart phones, and smart phones are continuously new, especially, major mobile phone manufacturers mainly take the highest pixels and large apertures. In the prior art, the aperture of the mobile phone is mostly a fixed aperture and cannot be reduced or enlarged like a camera lens, so that the use experience of many shooting enthusiasts is influenced. It is known that a certain amount of exposure is required for photographing a scene, but the imaging effect of an image is directly affected by the sufficiency of the exposure. The existing diaphragm technology is generally applied to a single-lens reflex camera device, the exposure is sufficient when the light-entering amount of a large diaphragm is large, and the exposure is insufficient when the light-entering amount of a small diaphragm is small. The trend toward miniaturization of imaging devices is incompatible with the use of large apertures. In the imaging technique using a small aperture, in order to obtain a sufficient amount of light, it is necessary to extend the exposure time of the light. Therefore, the possibility of slight hand shaking exists in the delayed exposure process, and certain uncontrollable risks are brought to the final shooting effect.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a continuous variable aperture device, so that the thickness of a mobile phone is not influenced while a camera of the mobile phone can realize the zoom of an aperture.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a continuous variable aperture device comprises an aperture assembly and a driving assembly, wherein the driving assembly comprises a driving coil, a position sensor and a driving push block, a driving magnet and a Hall magnet are arranged on the driving push block, the driving coil and the position sensor are oppositely and correspondingly arranged with the driving push block, a rotating disc and aperture blades are arranged on the aperture assembly, and the driving coil is electrified to enable the driving push block to move directionally so as to drive the rotating disc to rotate and further control the aperture blades to zoom.

Further, the drive assembly further comprises a PCB board, and the drive coil and the position sensor are both arranged on the PCB board.

Further, the three driving coils are arranged on the PCB side by side, wherein the current direction of the middle driving coil is opposite to the current direction of the two adjacent driving coils.

Furthermore, the drive magnets are multi-stage magnets, and N, S stages are uniformly distributed on the surface of the drive magnets opposite to the drive coil.

Further, a linkage reed is arranged between the driving push block and the rotating disc, a spring hole is formed in the linkage reed, a spring installation position is arranged on the aperture assembly, a positioning column is arranged at the spring installation position, and the spring hole is matched with the positioning column; the driving push block is connected with the rotating disk through the linkage reed and the driving pin, the driving pin is arranged at one end of the driving push block, a clamping hole is formed in the driving pin, and the clamping hole is matched with a rotating column arranged on the rotating disk.

Further, linkage reeds are arranged between the two ends of the driving push block and the diaphragm assembly, a connecting column is arranged at the joint of the driving push block and the linkage reeds, and the connecting column is connected with the spring hole in the linkage reeds in a matched mode.

Further, a plurality of rotating columns are arranged on the rotating disc, strip-shaped holes are formed in the aperture blades, the strip-shaped holes are matched with the rotating columns, and the aperture blades are arranged on the rotating disc.

Further, the rotating disk is of an annular structure and is arranged on the lower base, an annular groove is formed in the lower base, and an opening is formed in one side of the annular groove and used for the rotating disk to be connected with the driving assembly.

Further, still be provided with a plurality of fixed column on the base down, the fixed column is close to the column spinner setting, be provided with on the light ring blade with the round hole that the fixed column is connected.

Further, an aperture substrate is arranged between the rotating disk and the aperture blades, and a plurality of arc-shaped grooves and through holes are formed in the aperture substrate and used for the rotating column and the fixing column to pass through.

Furthermore, a plurality of hole-shaped grooves are formed in the annular bottom wall of the annular groove, and balls are arranged in the hole-shaped grooves; or, a plurality of bulges are arranged on the bottom wall of the rotating disk.

According to the continuous variable aperture device, the electrified driving coil is matched with the driving magnet, electromagnetic force is generated on the driving coil by utilizing a magnetic field generated by the driving magnet, the driving coil directionally moves under the action of the electromagnetic force according to the Framing's left-hand rule, the driving coil is fixed with the aperture assembly, the driving magnet is subjected to reaction force, and the driving magnet is arranged on the driving push block, so that the driving push block is driven to directionally move, a rotating disc is rotated, aperture blades are zoomed, and the size of an aperture is changed.

The invention considers the market trend of the miniaturized camera device, strives to develop a miniaturized continuous variable aperture technology capable of fully exposing in the shortest time in the limited arrangement space, and is applied to the camera of the smart phone and the like to improve the shooting experience and effect of the existing mobile phone and the like and improve the shooting experience of users.

The aperture assembly and the driving assembly are arranged side by side, the stacked design of the driving assembly and the aperture assembly in the prior art is distinguished, the thickness of the aperture device is reduced, meanwhile, the driving coil and the driving magnet are matched to achieve the zooming of aperture blades, the arrangement of gear stacking in the prior art is not needed, and the installation space is established for installing the iris diaphragm device in the smart phone in the thickness direction.

Meanwhile, the position sensor and the Hall magnet are arranged oppositely, the Hall magnet is arranged on the driving push block, and the driving push block drives the Hall magnet to move synchronously when moving. The position sensor detects the relative displacement of the driving push block by sensing the strength change of the magnetic field of the Hall magnet, namely, the relative position change condition of the driving push block in the driving direction is fed back. The structure forms a closed-loop position feedback control system, and the closed-loop control has the characteristics of high driving speed, accurate driving position, lower power consumption and more prominent imaging effect. Through operation feedback, the target displacement of the driving push block can be controlled by changing the magnitude of the input current, and finally the opening and closing degree of the aperture blades is controlled, so that the effect that the aperture is continuously variable is realized. Therefore, the ideal light inlet quantity is realized by automatically adjusting the opening size of the diaphragm blades in the diaphragm.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a step-by-step assembly view of the drive assembly of the present invention;

FIG. 3 is a schematic view of the drive assembly installation of the present invention;

FIG. 4 is a schematic view of a PCB board of the present invention;

FIG. 5 is a schematic view of a driving push block according to the present invention;

FIG. 6 is a schematic view of the operation of the drive assembly of the present invention;

FIG. 7 is a schematic view of the lower substrate and the rotating disk according to the second embodiment.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention is clearly and completely described below with reference to the drawings in the example of the present invention, and it is obvious that the described example is only a part of the example of the present invention, and not a whole example. All other embodiments obtained by a person skilled in the art based on the examples of the present invention without any inventive step shall fall within the scope of protection of the present invention.

In the description of the present embodiment, the terms "inside", "outside", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish similar items and are not to be construed as requiring a particular order or sequence, and it is to be understood that such uses are interchangeable under appropriate circumstances.

To clearly illustrate the idea of the present invention, the present invention is described below with reference to examples.

A continuous variable aperture device comprises an aperture assembly and a driving assembly, wherein the driving assembly comprises a driving coil, a position sensor and a driving push block, a driving magnet and a Hall magnet are arranged on the driving push block, the driving coil and the position sensor are oppositely and correspondingly arranged with the driving push block, a rotating disc and aperture blades are arranged on the aperture assembly, and the driving coil is electrified to enable the driving push block to move directionally so as to drive the rotating disc to rotate and further control the aperture blades to zoom.

In the continuous variable aperture device in the above example, through the cooperation of the energized driving coil and the driving magnet, the magnetic field generated by the driving magnet generates electromagnetic force on the driving coil, so that the driving magnet directionally moves under the action of the electromagnetic force according to the fleming's left-hand rule, and because the driving coil is fixed with the aperture assembly, the driving magnet receives reaction force, and because the driving magnet is arranged on the driving push block, the driving push block directionally moves, so that the rotating disk rotates, and then the aperture blades zoom, and the size of the aperture is changed.

The invention considers the market trend of the miniaturized camera device, strives to develop a miniaturized continuous variable aperture technology capable of fully exposing in the shortest time in the limited arrangement space, and is applied to the camera of the smart phone and the like to improve the shooting experience and effect of the existing mobile phone and the like and improve the shooting experience of users.

The aperture assembly and the driving assembly are arranged side by side, the stacked design of the driving assembly and the aperture assembly in the prior art is distinguished, the thickness of the aperture device is reduced, meanwhile, the driving coil and the driving magnet are matched to achieve the zooming of aperture blades, the arrangement of gear stacking in the prior art is not needed, and the installation space is established for installing the iris diaphragm device in the smart phone in the thickness direction.

Meanwhile, the position sensor and the Hall magnet are arranged oppositely, the Hall magnet is arranged on the driving push block, and the driving push block drives the Hall magnet to move synchronously when moving. The position sensor detects the relative displacement of the driving push block by sensing the strength change of the magnetic field of the Hall magnet, namely, the relative position change condition of the driving push block in the driving direction is fed back. The structure forms a closed loop type position feedback control system, and the target displacement of the driving push block can be controlled by changing the magnitude of the input current through operation feedback, so that the opening and closing degree of the aperture blades is finally controlled. Therefore, the ideal light inlet quantity is realized by automatically adjusting the opening size of the diaphragm blades in the diaphragm.