阅读说明：本技术 一种两档式的可变光圈装置 (Two-gear type iris diaphragm device ) 是由 赵阳阳 石一崴 王万军 于 2021-03-09 设计创作，主要内容包括：本发明涉及一种两档式的可变光圈装置,其技术要点是,包括：底座,中部设有通孔Ⅰ；上盖,用于与底座扣合形成内腔中部,设有与底座上的通孔Ⅰ同轴心的通孔Ⅱ；载体,呈环形,支撑于内腔中,用于承载并带动调整光圈的叶片；叶片,在载体和上盖的约束下发生转动,使其上设置的遮光孔与摄像镜头同轴心或远离摄像镜头轴心；驱动组件,用于驱动载体相对底座和上盖转动。本发明通过调整进光面积控制进光量,即调整有效透光区域面积大小,解决了现有摄像装置在不同光照下拍摄不清晰的问题,进而具有可调的景深,使得拍摄效果更加多样化。(The invention relates to a two-gear type iris diaphragm device, which is technically characterized by comprising the following components: the middle part of the base is provided with a through hole I; the upper cover is buckled with the base to form the middle part of the inner cavity and is provided with a through hole II which is coaxial with the through hole I on the base; the carrier is annular, is supported in the inner cavity and is used for bearing and driving the blades for adjusting the aperture; the blade rotates under the restraint of the carrier and the upper cover, so that the shading hole arranged on the blade is coaxial with the camera lens or is far away from the axle center of the camera lens; and the driving assembly is used for driving the carrier to rotate relative to the base and the upper cover. The invention controls the light inlet quantity by adjusting the light inlet area, namely adjusting the area size of the effective light transmission area, solves the problem that the existing camera shooting device cannot clearly shoot under different illumination, further has adjustable depth of field, and ensures that the shooting effect is more diversified.)

1. A two-stage iris diaphragm apparatus, comprising:

the middle part of the base is provided with a through hole I;

the upper cover is buckled with the base to form the middle part of the inner cavity and is provided with a through hole II which is coaxial with the through hole I on the base;

the carrier is annular, is supported in the inner cavity and is used for bearing and driving the blades for adjusting the aperture;

the blade rotates under the restraint of the carrier and the upper cover, so that the shading hole arranged on the blade is coaxial with the camera lens or is far away from the axle center of the camera lens;

and the driving assembly is used for driving the carrier to rotate relative to the base and the upper cover.

2. The two-stage variable aperture stop device according to claim 1, wherein: the driving assembly comprises a plurality of driving magnets fixed on the carrier around the axial lead of the carrier and a plurality of driving coils fixed on the inner surface of the upper cover and used for being matched with the driving magnets, wherein an FPCB circuit board is paved in the upper cover, and the driving coils are connected with the FPCB circuit board.

3. The two-stage variable aperture stop device according to claim 1, wherein: the carrier lower surface is equipped with a plurality of stoppers around its axial lead evenly distributed, the bottom surface is equipped with the spacing groove that cooperates and restrict stopper rotation stroke with the stopper in the base, be equipped with ball rolling structure between carrier upper surface and the upper cover internal surface.

4. The two-stage variable aperture stop device according to claim 1, wherein: the utility model discloses a ball rolling structure, including upper cover, upper cover top surface, yoke and drive magnetite one-to-one, the area of yoke covers the motion stroke rather than the drive magnetite that corresponds, increases drive power on the one hand, and on the other hand makes drive magnetite and yoke produce magnetic attraction, guarantees that the ball rolling structure between carrier and the upper cover cooperates inseparabler.

5. The two-stage variable aperture stop device according to claim 3 or 4, characterized in that: the ball rolling structure comprises a plurality of circular grooves arranged on the inner surface of the upper cover and around the axis of the carrier, and arc-shaped grooves arranged on the upper surface of the carrier and corresponding to the circular grooves one by one, balls are arranged between the circular grooves and the corresponding arc-shaped grooves, and the balls roll along the arc-shaped grooves when the carrier rotates.

6. The two-stage variable aperture stop device according to claim 1, wherein: the carrier upper surface is fixed with the driving shaft bolt and is hinged with one end of the blade by utilizing the driving shaft bolt, the shading hole is positioned at the other end of the blade, the upper cover is internally fixed with the limiting shaft bolt, the blade is provided with an arc limiting hole matched with the limiting shaft bolt, the arc center of the arc limiting hole is not superposed with the axial lead of the driving shaft bolt, the driving shaft bolt is driven to rotate when the carrier rotates, and meanwhile, the limiting shaft bolt is matched with the arc-shaped groove on the blade to generate rotating torque so that the blade does circular motion.

7. The two-stage variable aperture stop device according to claim 1, wherein: the drive magnets and the corresponding drive coils are arranged oppositely.

8. The two-stage variable aperture stop device according to claim 1, wherein: the driving magnets and the corresponding driving coils are arranged in a staggered mode, the staggered direction and the staggered angle of each group of driving magnets and the corresponding driving coils are the same, so that tangential Lorentz force is generated in a magnetic field by the energized coils, and the reaction force drives the driving magnets and the carrier to rotate reversely.

9. The two-stage variable aperture stop device according to claim 1, wherein: and a concave-convex connecting structure is arranged between the upper edge of the base and the lower edge of the upper cover, and the concave-convex connecting structure and the lower edge of the upper cover are fixed by dispensing, so that the concave-convex connecting structure and the upper cover are mutually buckled and are mutually static.

Technical Field

The invention relates to the technical field of photography and video shooting, in particular to a two-gear type iris diaphragm device which is suitable for photography and video shooting of mobile intelligent equipment.

Technical Field

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, most major mobile phone manufacturers mainly take the highest pixels and large apertures.

In the prior art, the diaphragm of the mobile phone is mostly a fixed diaphragm, and cannot be reduced and enlarged like a camera lens, which affects the use experience of many photography enthusiasts. 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. However, there is a possibility of slight hand-shake during the delayed exposure, which brings an uncontrollable risk to the final photographic effect.

Disclosure of Invention

The invention aims to provide a two-stage iris diaphragm device, which solves the problem that the existing camera device cannot clearly shoot under different light by adjusting the light inlet area to control the light inlet amount, namely adjusting the area size of an effective light transmission area, and further has adjustable depth of field to enable the shooting effect to be more diversified.

The technical scheme of the invention is as follows:

a two-gear type iris diaphragm device is technically characterized by comprising:

the middle part of the base is provided with a through hole I;

the upper cover is buckled with the base to form the middle part of the inner cavity and is provided with a through hole II which is coaxial with the through hole I on the base;

the carrier is annular, is supported in the inner cavity and is used for bearing and driving the blades for adjusting the aperture;

the blade rotates under the restraint of the carrier and the upper cover, so that the shading hole arranged on the blade is coaxial with the camera lens or is far away from the axle center of the camera lens;

and the driving assembly is used for driving the carrier to rotate relative to the base and the upper cover.

In the two-stage iris diaphragm device, the driving assembly includes a plurality of driving magnets fixed on the carrier around the axial lead of the carrier, and a plurality of driving coils fixed on the inner surface of the upper cover and used for matching with the driving magnets, an FPCB circuit board is laid in the upper cover, and the driving coils are connected with the FPCB circuit board.

In the two-gear iris diaphragm device, the lower surface of the carrier is provided with a plurality of limiting blocks which are uniformly distributed around the axial lead of the carrier, the inner bottom surface of the base is provided with a limiting groove which is matched with the limiting blocks and limits the rotation stroke of the limiting blocks, and a ball rolling structure is arranged between the upper surface of the carrier and the inner surface of the upper cover.

In the two-gear iris diaphragm device, the top surface of the upper cover is embedded with the plurality of magnet yokes, the magnet yokes correspond to the driving magnets one to one, the area of each magnet yoke covers the movement stroke of the corresponding driving magnet, on one hand, the driving force is increased, on the other hand, the driving magnet and the magnet yokes generate magnetic attraction, and the ball rolling structure between the carrier and the upper cover is ensured to be matched more tightly.

In the two-stage iris diaphragm device, the ball rolling structure comprises a plurality of circular grooves arranged on the inner surface of the upper cover and around the axis of the carrier, and arc-shaped grooves arranged on the upper surface of the carrier and corresponding to the circular grooves one by one, balls are arranged between the circular grooves and the corresponding arc-shaped grooves, and the balls roll along the arc-shaped grooves when the carrier rotates.

The two-gear iris diaphragm device is characterized in that a driving shaft bolt is fixed on the upper surface of a carrier and is hinged to one end of each blade through the driving shaft bolt, a shading hole is formed in the other end of each blade, a limiting shaft bolt is fixed on the inner surface of an upper cover, an arc limiting hole matched with the limiting shaft bolt is formed in each blade, the arc center of the arc limiting hole is not overlapped with the axial lead of the driving shaft bolt, the driving shaft bolt is driven to rotate when the carrier rotates, and meanwhile, the limiting shaft bolt is matched with an arc groove in each blade to generate rotating torque so that the blades do circular motion.

In the two-stage iris diaphragm device, the driving magnets and the corresponding driving coils are arranged opposite to each other.

In the two-gear type iris diaphragm device, the driving magnets and the corresponding driving coils are arranged in a staggered manner, and the staggered directions and angles of the driving magnets and the driving coils are consistent, so that the energized coils generate tangential lorentz force in a magnetic field, and the reaction force drives the driving magnets and the carrier to rotate reversely.

In the two-stage iris diaphragm device, the concave-convex connecting structure is arranged between the upper edge of the base and the lower edge of the upper cover, and the concave-convex connecting structure is fixed by dispensing, so that the concave-convex connecting structure and the upper cover are mutually buckled and are mutually static.

The invention has the beneficial effects that:

utilize the tangential lorentz force that drive assembly produced, the rotatory motion is made with carrier relative upper cover and base to the drive magnetite, thereby drive the blade motion, under the restraint of carrier and upper cover, make the shading hole that sets up on it with the axle center of camera lens or keep away from camera lens axle center, finally realize changing the purpose in camera lens clear aperture, and then change rather than the light inlet amount of complex camera lens, make camera lens have the adjustable depth of field, the problem of current camera device not clear under different illumination has been solved, make the shooting effect more diversified, the experience of shooing of cell phone user has been improved. The device has the characteristics of small volume and simple structure, is suitable for a light and thin camera device, and has strong practicability.

Drawings

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

FIG. 2 is a schematic view of the fitting of the base and the carrier in example 1 of the present invention;

FIG. 3 is a schematic view showing the combination of a driver magnet and a carrier in example 1 of the present invention;

FIG. 4 is a schematic view showing the engagement of a yoke and an upper cover in embodiment 1 of the present invention;

fig. 5 is a schematic view of the engagement of the driving coil and the upper cover in embodiment 1 of the present invention;

FIG. 6 is a schematic view showing the fitting of balls to a carrier in example 1 of the present invention;

FIG. 7 is a schematic view showing the fitting of the balls to the upper cover in embodiment 1 of the present invention;

FIG. 8 is a schematic view showing the combination of the carrier, the balls, and the upper cover in embodiment 1 of the present invention;

FIG. 9 is a schematic view showing the engagement of the driving shaft pin with the carrier in embodiment 1 of the present invention;

FIG. 10 is a schematic view of the engagement between the limit shaft pin and the upper cover in embodiment 1 of the present invention;

FIG. 11 is a schematic view showing the engagement of the blades in the initial position in example 1 of the present invention;

FIG. 12 is a schematic view showing the fitting of the blade end positions in embodiment 1 of the present invention;

FIG. 13 is a schematic view showing moments at an initial position, an intermediate position and an end position of the movement of the blade in embodiment 1 of the present invention;

FIG. 14 is a schematic view showing the positional relationship among the drive magnet, the drive coil and the yoke in example 2 of the present invention;

FIG. 15 is a schematic view showing the force applied to the driving magnet in example 2 of the present invention.

In the figure: 1. the magnetic yoke, 2, the upper cover, 3, the FPCB circuit board, 4, the driving coil, 5, the ball, 6, the shaft bolt, 601, the driving shaft bolt, 602, the limiting shaft bolt, 7, the blade, 8, the driving magnet, 9, the carrier, 10, the base, 11, the limiting block, 12, the limiting groove, 13, the groove, 14, the groove, 15, the positioning column, 16, the arc groove, 17, the circular groove, 18, the hole, 19, 20, the arc limiting hole, and 21, the shading hole.

Detailed Description

Example 1

As shown in fig. 1 to 2, the two-stage iris diaphragm apparatus includes: the middle of the base 10 is provided with a through hole I; the upper cover 2 is buckled with the base 10 to form the middle part of an inner cavity and is provided with a through hole II which is coaxial with the through hole I on the base 10; the carrier 9 is annular, is supported in the inner cavity and is used for bearing and driving the blades 7 for adjusting the aperture; the blade 7 rotates under the restraint of the carrier 9 and the upper cover 2, so that the shading hole 21 arranged on the blade is coaxial with the camera lens or is far away from the axle center of the camera lens; and the driving assembly is used for driving the carrier 9 to rotate relative to the base 10 and the upper cover 2.

In this embodiment, a concave-convex connection structure is disposed between the upper edge of the base 10 and the lower edge of the upper cover 2, and the concave-convex connection structure and the lower edge of the upper cover are fixed by dispensing, so that the concave-convex connection structure and the upper cover are mutually buckled and kept in a static relationship. The driving assembly comprises a plurality of driving magnets 8 fixed on a carrier 9 around the axial lead of the carrier and a plurality of driving coils 4 fixed on the inner surface of the upper cover 2 and used for being matched with the driving magnets 8, wherein an FPCB circuit board 3 is paved in the upper cover 2, the driving coils 4 are connected with the FPCB circuit board 3, and the FPCB circuit board 3 is connected with an external system and used for electrifying the driving coils 4. The carrier 9 is provided with a groove 13 corresponding to the drive magnet 8, and the inner surface of the upper cover 2 is provided with a positioning column 15 corresponding to the drive coil 4. The lower surface of the carrier 9 is provided with a plurality of limiting blocks 11 which are uniformly distributed around the axial lead of the carrier, the inner bottom surface of the base 10 is provided with a limiting groove 12 which is matched with the limiting blocks 11 and limits the rotating stroke of the limiting blocks 11, and a ball rolling structure is arranged between the upper surface of the carrier 9 and the inner surface of the upper cover 2. The top surface of the upper cover 2 is embedded with a plurality of magnet yokes 1, the magnet yokes 1 correspond to the driving magnets 8 one by one, the area of the magnet yokes 1 covers the movement stroke of the driving magnets 8 corresponding to the magnet yokes, on one hand, the driving force is increased, on the other hand, the driving magnets 8 and the magnet yokes 1 generate magnetic attraction, and the ball rolling structure between the carrier 9 and the upper cover 2 is guaranteed to be matched more closely. The top surface of the upper cover 2 is provided with grooves 14 corresponding to the respective yokes 1.

Ball rolling structure including locate 2 internal surfaces of upper cover a plurality of circular recesses 17 that arrange around the carrier axial lead, locate the carrier upper surface with circular recess 17 one-to-one arc recess 16, be equipped with ball 5 between circular recess 17 and the arc recess 16 that corresponds, ball 5 rolls along arc recess 16 when carrier 9 is rotatory, and ball 5 has lubricating oil to do the effect that reduces friction power in the cooperation region, and simultaneously, yoke 1 has reduced the risk that the ball dropped in the middle of the motion with the produced magnetic attraction of drive magnetite 8.

Carrier 9 and upper cover 2 utilize two shaft bolts 6 restraint blade, promptly carrier 9 upper surface utilizes the fixed drive shaft bolt 601 of hole 18 and utilizes drive shaft bolt 601 articulated with the one end of blade 7, shading hole 21 is located the blade 7 other end, upper cover 2 internal surface utilizes the fixed spacing shaft bolt 602 of hole 19, be equipped with the spacing hole 20 of arc with spacing shaft bolt 602 complex on the blade 7, the arc center of the spacing hole 20 of arc does not coincide with the axial lead of drive shaft bolt 601, and carrier 9 drives drive shaft bolt 601 and rotates when rotatory, and simultaneously, spacing shaft bolt 602 and the spacing hole 20 cooperation of arc on the blade 7 produce turning moment, make blade 7 do the circular motion.

In this embodiment, the drive magnets 8 and the corresponding drive coils 4 are arranged to face each other. The driving magnet 8 and the driving coil 4 generate tangential lorentz force, the reaction force of the lorentz force drives the carrier 9 to rotate, and meanwhile, the driving shaft bolt 601 and the limiting shaft bolt 602 which are assembled on the carrier 9 and the upper cover 2 drive the blades 7 to do circular motion, so that the shading holes 21 which are smaller than the aperture of the lens on the blades 7 are coaxial with the camera lens, and the purpose of changing the light inlet amount of the lens is achieved. Referring to fig. 11 and 12, the positions of the starting point and the ending point of the blade, the moment acting on the blade and the force direction are shown in fig. 13. In the process of the blade 7 from the starting point to the ending point, the limiting shaft bolt 602 is matched with the arc limiting hole 20 of the blade for limiting, so as to form a rotation moment, and under the drive of the moment and the driving shaft bolt 601, the shading hole 21 of the blade and an external camera lens are coaxial, so that the light inlet quantity is changed.

Example 2

As shown in fig. 14 and 15, in the two-stage variable aperture device, the drive magnets 8 and the corresponding drive coils 4 are arranged in a shifted manner, and the shift direction and angle between each group of the drive magnets 8 and the corresponding drive coil 4 are the same, so that the energized coils generate tangential lorentz forces in the magnetic field, and the reaction forces thereof drive the drive magnets 8 and the carrier 9 to rotate in opposite directions. Because the area of the magnet yoke 1 is larger than the area formed by the rotating track of the driving magnet 8, the sizes of the corresponding projection areas of the magnet yoke and the driving magnet are consistent in the moving process, and the driving force cannot be weakened.

The rest is the same as example 1.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the invention are also within the scope of the present patent.