KR100467650B1 - Actuator and shutter mechanism for small camera having the actuator - Google Patents

Abstract

PURPOSE: A driving device and a shutter device with the same for a small camera are provided to apply for the small camera installed in a communication terminal by reducing the size of the shutter device. CONSTITUTION: A shutter device for a small camera is composed of a base unit installed in a body tube of the camera and formed with a light through-hole(122,212) for transiting the light to a lens group mounted in the body tube; a shutter unit disposed at the base unit to open and close the light through-hole; a first coil(180) taken up several times and fixed on the base unit to receive the power from the outside; a first magnet(184) positioned in a distance exposed to a magnetic field of the first coil; a first rotor(190) embedded with the first magnet in an eccentric position, shaft -supported by a base(100) to expose selectively first and second polarities of the first magnet to the magnetic field of the first coil and to transmit power generated by a rotary motion; an iris unit arranged on the base unit to regulate exposure of the light through-hole; a second coil(220) wound and fastened on the base unit to receive the power; a second magnet(224) positioned in the distance exposed to the magnetic field of the second coil; and a second rotor(230) embedded with the second magnet in an eccentric position and shaft-supported by the base to expose selectively first and second polarities of the second magnet to the magnetic field of the second coil and to transmit power generated by a rotary motion to the iris unit.

Description

Shutter device for a small camera having a drive device and the drive device {ACTUATOR AND SHUTTER MECHANISM FOR SMALL CAMERA HAVING THE ACTUATOR}

The present invention relates to a drive device and a shutter device for a small camera having the drive device, and in particular, to simplify and reduce the structure of the shutter device to be applied to a small camera device installed in the communication terminal, the response The present invention relates to a driving apparatus for maximizing the speed and to capturing a high quality image, and a shutter apparatus for a small camera having the driving apparatus.

In general, a camera employing an electronic shutter includes a sequence of auto focusing for exposing a focusing lens to a distance measured at an arbitrary distance from a subject, and automatic exposure for controlling an aperture size of an aperture according to the brightness of a subject. It is done automatically.

The technology for the camera applying the electronic shutter is described in US Patent No. 4918480 (October 27, 1998), US Patent No. 4634254 (1985.6.20), US Patent No. 5111230 (1990.8.28), and Japanese Patent. Korean Patent Application Publication No. 61-9632, Korean Patent Application No. 1997-0038300, and Korean Patent No. 0261600.

Such a conventional shutter apparatus has a structure that drives the shutter by receiving power from a power source for driving the barrel, thereby reducing the number of power sources. However, such a shutter device has a disadvantage in that the power transmission structure is complicated and the number of parts is excessive.

On the other hand, a small communication terminal such as a mobile phone is equipped with a small camera due to its size constraint, and in some cases, a camera having only an on / off function without a zoom function is used to minimize the size of the camera. do.

Therefore, the bulky shutter device having a complicated structure as in the conventional shutter device has a problem that is difficult to apply to a camera for a portable terminal.

That is, even if the camera for a mobile phone is provided with a power source for driving the barrel and a power source for driving the shutter separately, the overall size must be reduced.

In addition, when photographing a still image with a camera device, the image quality of the captured image depends on the speed of the shutter plate that temporarily blocks the amount of light incident from the subject. The shutter device of the disclosed patent is driven by a plurality of gears. Because of the structure to transmit the delayed response speed there was a problem that can lead to a decrease in image quality when shooting a still image.

The present invention has been made to solve the above problems, the object of the present invention is to simplify the structure of the shutter device and to reduce the size can be applied to a small camera device installed in the communication terminal, the response speed It is to make it possible to capture high-quality video by maximizing.

1 is an exploded perspective view of a shutter device which is a preferred embodiment of the present invention;

2 is a perspective view showing the base portion shown in FIG.

3 is a perspective view illustrating the first driving unit illustrated in FIG. 1;

4 is a perspective view illustrating the second driving unit illustrated in FIG. 1;

5 is a cross-sectional view of the first driving unit shown in FIG. 3;

6 is a cross-sectional view of the second driving unit shown in FIG. 3;

7 is a perspective view of the shutter unit and the aperture unit shown in FIG. 1;

8 to 10 are perspective views illustrating operating states of the shutter unit and the aperture unit illustrated in FIG. 7.

<Explanation of symbols for main parts of drawing>

100: first base 102: first light passing hole

110: first receiving space portion 112: first shaft holder

114: screw hole 116: second accommodation space

118: second axis holder 120: second base

122: second light passing hole 124: plane

126: protruding surface 130: first arc-shaped hole

132: second hinge axis 134: third hinge axis

136: second arc shaped hole 138: fifth hinge axis

140: guide rib 142: first through hole

150: first shutter plate 152: first shaft hole

154: first chapter 160: second shutter plate

162: second shaft ball 164: second chapter ball

180: first coil 182: first yoke

190: first rotor 192: first hinge axis

194: first drive shaft 200: first torsion spring

210: cover 212: third light passing hole

214: through the second

220: second coil 222: second yoke

230: second rotor 232: fourth hinge axis

234: second drive shaft 240: second torsion spring

250: Aperture plate 252: Third shaft hole

254: Chapter 3 256: Light control

270: separator 272: fourth light passing hole

280: third arc-shaped ball 282: fourth axis ball

284: fifth shaft hole 290: fourth arc-shaped ball

292 sixth axis ball

The present invention for achieving the above object, the base portion is installed in the barrel portion of the camera, the base portion having a light passing hole for passing light to the lens group mounted to the barrel portion; A shutter unit installed at the base unit to open and close the light passing hole; A first coil wound several times and fixed to the base part and receiving power from an external source; A first magnet located at a distance exposed in the magnetic field of the first coil; The first magnet is embedded in an eccentric position, the first polarity and the second polarity of the first magnet are axially supported on the base so as to be selectively exposed in the magnetic field of the first coil, and the force according to the rotational operation is applied to the shutter. A first rotor for transmitting to the unit; An aperture part installed at the base part to adjust exposure of the light passing hole; A second coil wound several times and fixed to the base, and receiving power from an external source; A second magnet located at a distance exposed in the magnetic field of the second coil; And embedding the second magnet in an eccentric position, the first polarity and the second polarity of the second magnet being axially supported on the base so as to be selectively exposed in the magnetic field of the second coil, wherein It provides a shutter device for a small camera configured to include a second rotor for transmitting to the aperture. The base portion, the first light through hole for passing the light through the lens group is formed, the first driving portion and the second driving portion A first base seated; And a second light through hole coupled to the first base, the second light through hole corresponding to the first light through hole, and providing a plane through which the shutter unit and the aperture flow in a surface facing the first base. In the plane, a projection surface for reducing friction between the shutter unit and the aperture unit and the second base is formed at a trajectory in which the shutter unit and the aperture unit move and an edge of the second light passing hole. The shutter unit is rotatably coupled to a hinge shaft formed in the base unit, and includes a shutter plate that opens and closes the light passing hole by a rotation operation. The shutter plate is opposed to the light passing hole. One pair is provided at each position. The pair of shutter plates are each provided with a first arc-shaped hole to which the first driving shaft of the first rotor is coupled, and the first driving shaft is The pair of shutter plates are installed in the base part to simultaneously open and close the light passing holes during exercise. The compact camera shutter device is coupled to the center of the first coil, and power is supplied to the first coil. And a first yoke that is magnetized when supplied. The compact shutter device for the small camera is configured to cut off power to the first coil while power is supplied to the first coil and the first rotor is rotated. And a first elastic means for restoring the first rotor to its original shape. The first elastic means has a center thereof fixed to a central axis of rotation of the first rotor, and one end thereof is supported by the base part. The other end includes a first torsion spring supported by the first rotor. The aperture is rotatably coupled to a hinge shaft formed in the base, and passes through the light passing hole. A light amount adjusting hole for adjusting the amount of the light is formed, and the aperture plate is formed to open and close the light passing hole by a rotation operation. The aperture plate includes a second arc-shaped hole to which the second driving shaft of the second rotor is coupled. The diaphragm is installed in the base part to open and close the light passing hole when the second driving shaft is in a circular motion. The shutter device for the small camera is coupled to the center of the second coil and the second coil. And a second yoke which is magnetized when the power is supplied to the second camera. The compact camera shutter device is configured to supply power to the second coil while power is supplied to the second coil and the second rotor is rotated. And a second elastic means for restoring the second rotor to its original state when it is blocked. The second elastic means has its center fixed to the rotational center axis of the second rotor, and once The second torsion spring is supported by the base part and the other end is supported by the second rotor. The compact shutter device for the small camera is coupled to the base part and has a third light passing hole corresponding to the light passing hole. And a cover for covering the shutter unit, the first driving unit, the aperture unit, and the second driving unit. The shutter apparatus for a small camera includes a collision between the shutter unit and the aperture unit. In order to achieve the above object, another embodiment of the present invention provides a coil that is wound several times and receives power from an external source; A magnet located at a distance exposed in the magnetic field of the coil; And a rotor incorporating the magnet in an eccentric position, supported by the base such that the first polarity and the second polarity of the magnet are selectively exposed in the magnetic field of the coil, and transmitting a force to the outside according to a rotation operation. It provides a drive device characterized in that made. The drive device is coupled to the center of the coil, and further comprises a yoke that is magnetized when the power is supplied to the coil.

Hereinafter, a preferred embodiment of the present invention having the configuration as described above will be described in detail the present invention. In the description of this embodiment, detailed descriptions of well-known functions and well-known structures will be omitted.

1 is an exploded perspective view of a shutter device according to a preferred embodiment of the present invention, FIG. 2 is a perspective view showing a base part shown in FIG. 1, FIG. 3 is a perspective view showing a first driving part shown in FIG. 1, and FIG. 4. Is a perspective view of the second driving unit illustrated in FIG. 1. 5 is a cross-sectional view of the first driving unit shown in FIG. 3, FIG. 6 is a cross-sectional view of the second driving unit shown in FIG. 3, and FIG. 7 is a perspective view of the shutter unit and the aperture unit shown in FIG. 1.

The field to which the present invention is applied is a small camera device applied to a small communication device such as a mobile phone.

In general, a small camera includes a barrel device having a plurality of lens groups, an image sensor for converting an image passing through the lens group into an electric signal, and a shutter device for adjusting the amount of light incident on the lens group.

The shutter device of the present embodiment includes: a base part installed in a barrel portion of a camera and having a light passing hole for passing light through a lens group mounted to the barrel portion; A shutter unit installed at the base unit to open and close the light passing hole; A first driving part installed at the base part and driving the shutter part to open and close the light passing hole; An aperture part installed at the base part to adjust exposure of the light passing hole; And a second driving part installed at the base part and driving the aperture to adjust the exposure of the aperture through the aperture.

The base unit may include: a first base 100 having a first light passing hole 102 through which light passes through the lens group, and on which the first driving unit and the second driving unit are seated; And a second light passing hole 122 coupled to the first base 100 and corresponding to the first light passing hole 102, and having a shutter portion and an aperture portion facing the first base 100. It consists of a second base 120 providing a flowing plane 124.

The first base 100 is formed with a first accommodating space 110 in which the first driving part is installed, and a second accommodating space 116 in which the second driving part is installed.

On the plane 124, a projection surface 126 for reducing the friction between the shutter portion and the aperture portion and the second base 120 at the edge of the second light passing hole 122 and the trajectory in which the shutter portion and the aperture portion move are provided. Is formed.

The shutter unit is rotatably coupled to the second hinge shaft 132 formed on the second base 120, and includes a first shutter plate 150 that opens and closes the second light passing hole 122 by a rotational motion, and a second The second shutter plate 160 is rotatably coupled to the third hinge shaft 134 formed on the base 120 and opens and closes the second light passing hole 122 in a rotation operation.

A pair of the first shutter plate 150 and the second shutter plate 160 are provided at positions facing each other with respect to the second light passing hole 122.

The first shutter plate 150 and the second shutter plate 160 are formed with first arc-shaped holes 130 to which the first driving shaft 194 of the first driving unit is coupled, respectively, and the first driving shaft 194 is a circle. During exercise, the first shutter plate 150 and the second shutter plate 160 are installed in the second base 120 to simultaneously open and close the second light passing hole 122.

The first driving unit may include: a first coil 180 that is wound several times and receives power from an outside; A first magnet 184 located at a distance exposed in the magnetic field of the first coil 180; And a first magnet 184 embedded in an eccentric position, and if power is not applied to the first coil 180, the first polarity of the first magnet 184 is close to the first coil 180, and the first When power is applied to the coil 180, the second polarity of the first magnet 184 is axially supported by the first base 100 so as to be exposed in the magnetic field of the first coil 180, and a force according to the rotation operation is applied to the shutter unit. It consists of a first rotor 190 to transmit to.

In addition, the first driving unit may move the first yoke 182 that is magnetized when power is supplied to the first coil 180 at the center of the first coil 180 to close the flow of the magnetic field to the first magnet 184. Combine.

The first rotor shaft 192 is formed in the first rotor 190, and the first hinge shaft 192 is rotatably coupled in the first accommodating space 110 of the first base 100. The shaft holder 112 is formed.

In addition, the first driving unit, when power is supplied to the first coil 180 and the first rotor 190 is rotated, when the power to the first coil 180 is cut off, the first rotor 190 is returned to its original shape. A first elastic means for restoring is provided.

The first elastic means, the center of which is fixed to the first hinge shaft 192 of the first rotor 190, one end is supported by the first base 100, the other end is supported by the first rotor 190 First torsion spring 200.

The aperture part is rotatably coupled to the fifth hinge shaft 138 formed on the first base 100, and has a light amount adjusting hole 256 for adjusting an amount of light passing through the second light passing hole 122. It is formed, and consists of a diaphragm 250 for opening and closing the second light passing hole 122 in the rotation operation.

The diaphragm 250 is formed with a second arc-shaped hole 136 to which the second driving shaft 234 of the second driving unit is coupled, and when the second driving shaft 234 makes a circular movement, the diaphragm 250 is formed of a second plate. It is installed on the first base 100 to open and close the two light passing holes (122).

The second driving unit may include a second coil 220 which is wound several times and receives a power supply from the outside; A second magnet 224 positioned at a distance exposed in the magnetic field of the second coil 220; And a second magnet 224 embedded in an eccentric position, and when power is not applied to the second coil 220, the first polarity of the second magnet 224 is approached to the second coil 220. When power is applied to the coil 220, the second polarity of the second magnet 224 is axially supported by the first base 100 so as to be exposed to the magnetic field of the second coil 220, and the force according to the rotation operation is applied to the aperture plate. It consists of a second rotor 230 to transmit to (250).

In addition, the second driving unit is coupled to the center of the second coil 220 to close the flow of the magnetic field to the second magnet 224, the second yoke (magnetized when the power is supplied to the second coil 220) 222.

In addition, when the power is supplied to the second coil 220 and the second rotor 230 is rotated, the second driving unit reverts to the original shape of the second rotor 230 when the power is cut off to the second coil 220. And a second elastic means for restoring to.

The second elastic means, the center of which is fixed to the fourth hinge shaft 232 of the second rotor 230, one end is supported by the first base 100, the other end is supported by the second rotor 230 Second torsion spring 240.

The shutter device for a small camera of the present embodiment as described above is coupled to the second base 120, and the third light passing hole 212 corresponding to the second light passing hole 122 is formed, and the shutter unit and the first A cover 210 is further provided to cover the driving unit, the iris unit, and the second driving unit.

In addition, the compact camera shutter device of this embodiment is provided with a separating plate 270 for preventing mutual collision between the shutter portion and the aperture portion. The separation plate 270 includes a fourth shaft hole 282 for passing the second hinge shaft 132, a fifth shaft hole 284 for passing the third hinge shaft 134, and a first driving shaft 194. The third arc-shaped hole 280 for passing through is formed. In addition, the separation plate 270 is formed with a fourth light passing hole 272 corresponding to the second light passing hole 122, and a sixth shaft hole 292 through which the fifth hinge shaft 138 passes. A fourth arc-shaped hole 290 for passing the second drive shaft 234 is formed.

The first screw hole 114 is formed in the first base 100, and the first through hole 142 corresponding to the first screw hole 114 is formed in the second base 120, and the cover 210 is formed. The second through hole 214 corresponding to the first through hole 142 is formed. Then, the screw passes through the second through hole 214 and the first through hole 142 and is fastened to the first screw hole 114, so that the cover 210 and the second base 120 are connected to the first base 100. Combined.

A guide rib 140 is formed at an edge of the second base 120 to secure a space in which the shutter unit is installed between the second base 120 and the cover 210.

Hereinafter, the operation of the shutter device having the above configuration will be described.

First, when shooting a video in the camera device, as shown in Fig. 7, the shutter device must open all the light passing holes that provide light to the lens group. At this time, the control unit of the camera device does not apply power to the first coil 180 and the second coil 220, and the first shutter plate 150, the second shutter plate 160, and the aperture plate 250 are made of 2 keeps the light passage hole 122 open.

On the other hand, when taking a still image with the camera device, as shown in Fig. 8, the shutter device temporarily blocks the light passing through the light passing hole and incident on the lens group.

In the case where the amount of light incident to the light passing hole is small in this process, the cooking plate 250 does not operate but only the first shutter plate 150 and the second shutter plate 160 operate to operate the second light passing hole. Block 122.

When the amount of light incident on the second light passing hole 122 is large, the aperture plate 250 operates before the first shutter plate 150 and the second shutter plate 160 as shown in FIG. The amount of light incident on the light passing hole 122 is first adjusted, and then the first shutter plate 150 and the second shutter plate 160 are operated to block the second light passing hole 122 as shown in FIG. 10. do.

First, when the amount of light incident on the second light passing hole 122 is small, when power is applied to the first coil 180 from the controller, the first yoke 182 is magnetized to face the first magnet 184. The end portion has the same polarity as the first polarity of the first magnet 184.

Therefore, a repulsive force away from the first yoke 182 occurs on the first polar side of the first magnet 184, and an attraction force close to the first yoke 182 occurs on the second polar side. Accordingly, the first magnet 184 and the first rotor 190 overcome the elasticity of the first torsion spring 200 and rotate about the first hinge shaft 192, thereby providing a second polarity of the first magnet 184. The first yoke 182 moves to a position facing the yoke.

In this process, the first rotor 190 is rotated so that the first driving shaft 194 is the second first arc-shaped hole 130 and the third first of the first shutter plate 150 and the second shutter plate 160. It is moved in the state coupled to the arc-shaped ball (130). Therefore, the first shutter plate 150 and the second shutter plate 160 rotate about the second hinge axis 132 and the third hinge axis 134 to close the second light passing hole 122. At this time, since the first shutter plate 150 and the second shutter plate 160 are simultaneously collected from both sides of the second light passing hole 122, the first shutter plate 150 and the second shutter plate 160 may block light flowing into the second light passing hole 122 at a high speed. do. The image quality of the still image of the camera depends on the speed of the shutter device. Since the moving speed of the shutter unit is maximized due to the simple structure, the still image of the camera can be captured by the image sensor.

On the other hand, when the power supplied to the first coil 180 is cut off, the magnetic field formed in the first yoke 182 disappears. Therefore, the first rotor 190 and the first magnet 184 are restored to the original shape by the elasticity of the first torsion spring 200 to rotate the first rotor 190 to the original shape.

In this process, the first driving shaft 194 formed in the first rotor 190 is the second arc-shaped hole 136 and the second arc-shaped ball 136 of the first shutter plate 150 and the second shutter plate 160. In the state coupled to) will move in the reverse direction. Therefore, the first shutter plate 150 and the second shutter plate 160 rotate about the second hinge shaft 132 and the third hinge shaft 134 to open the second light passing hole 122.

Next, the operation when the amount of light incident on the light passing hole is large will be described.

When power is applied to the second coil 220 from the controller, the second yoke 222 is magnetized so that the end portion facing the second magnet 224 has the same polarity as the first polarity of the second magnet 224. .

Therefore, a repulsive force away from the second yoke 222 occurs on the first polar side of the second magnet 224, and an attraction force close to the second yoke 222 occurs on the second polar side. Accordingly, the second magnet 224 and the second rotor 230 overcome the elasticity of the second torsional spring 240 and rotate about the fourth hinge shaft 232 so that the second polarity of the second magnet 224 2 yoke 222 is moved to the position facing.

In this process, the second rotor 230 is rotated so that the second drive shaft 234 is moved in the state coupled to the third arc-shaped hole 280 of the aperture. Therefore, the aperture plate 250 rotates about the fourth hinge shaft 232 to close the second light passing hole 122. Accordingly, only a small amount of light is incident on the lens unit through the second light passing hole 122 through the light amount adjusting hole 256 of the aperture plate 250.

As described above, the aperture plate 250 continuously reduces the amount of light, such that the first shutter plate 150 and the second shutter plate 160 simultaneously block the second light passing hole 122 by the operation described above. .

In addition, the operation of opening the first shutter plate 150 and the second shutter plate 160 is the same as the above description.

On the other hand, when the power supplied to the second coil 220 is cut off, the magnetic field formed in the second yoke 222 disappears. Therefore, the second rotor 230 and the second magnet 224 are restored to the original shape by the elasticity of the second torsion spring 240 to rotate the second rotor 230 to the original shape.

In this process, the second driving shaft 234 formed in the second rotor 230 is moved in the opposite direction to the first in the state coupled to the third arc-shaped hole 280 of the aperture plate 250. Therefore, the diaphragm 250 rotates about the fourth hinge shaft 232 to open the second light passing hole 122.

As described above, the present invention provides a base unit having a light passing hole through which light passes through a lens group mounted to the barrel part of the camera and mounted on the barrel part, and a shutter part installed on the base part to open and close the light passing hole; A first driver for driving the shutter to open and close the light passing hole in the base part, an aperture part for adjusting the exposure of the light passing hole in the base part, and an aperture part installed in the base part. A shutter device for a small camera having a second driver for driving the aperture to adjust the exposure of the passage hole, and a driving device used in such a shutter device, the camera being installed in a communication terminal by simplifying the structure of the shutter device and reducing its size. It is possible to apply to a camera device having a small size, such as, by maximizing the drive speed of the shutter plate It is possible to capture high quality images.

In the above, the present invention has been described as an embodiment, but the present invention is not limited to the above-described embodiments, and the present invention is not limited to the above-described embodiments, and has a general knowledge in the field to which the present invention pertains without departing from the gist of the present invention. Anyone who grows up will be able to make various variations.

Claims (20)

A base part installed in the barrel portion of the camera and having a light passing hole through which light passes through the lens group mounted on the barrel portion; A shutter unit installed at the base unit to open and close the light passing hole; A first coil wound several times and fixed to the base part and receiving power from an external source; A first magnet located at a distance exposed in the magnetic field of the first coil; The first magnet is embedded in an eccentric position, the first polarity and the second polarity of the first magnet are axially supported on the base so as to be selectively exposed in the magnetic field of the first coil, and the force according to the rotational operation is applied to the shutter. A first rotor for transmitting to the unit; An aperture part installed at the base part to adjust exposure of the light passing hole; A second coil wound several times and fixed to the base, and receiving power from an external source; A second magnet located at a distance exposed in the magnetic field of the second coil; And The second magnet is embedded in an eccentric position, and the first polarity and the second polarity of the second magnet are axially supported on the base so as to be selectively exposed in the magnetic field of the second coil, and the force according to the rotational operation is applied to the aperture. Shutter device for a small camera comprising a second rotor for transmitting to the unit. The method according to claim 1, wherein the base portion, A first base through which light passes through the lens group, and a first base on which the first and second driving units are seated; And A second base coupled to the first base, the second light passing hole corresponding to the first light passing hole being formed, and providing a plane through which the shutter unit and the aperture flow in a surface facing the first base; Shutter device for a small camera, characterized in that consisting of. The method of claim 2, wherein in the plane, Shutter for a small camera, characterized in that the projection to reduce the friction between the shutter and the aperture and the second base formed on the trajectory of the shutter and the aperture and the edge of the second light passing hole. Device. The method according to claim 1, wherein the shutter unit, Shutter plate is rotatably coupled to the hinge shaft formed in the base portion, characterized in that made of a shutter plate for opening and closing the light passing hole by the rotation operation. The shutter device according to claim 4, wherein a pair of the shutter plates is provided at positions facing each other with respect to the light passing hole. The method according to claim 5, wherein the pair of shutter plate is formed with a first arc-shaped hole to which the first drive shaft of the first rotor is coupled, respectively, the pair of the shutter plate is the light passing when the first drive shaft is circular motion Shutter device for a small camera, characterized in that installed in the base portion to open and close the ball at the same time. The method of claim 1, wherein the compact camera shutter device, And a first yoke coupled to the center of the first coil and magnetized when power is supplied to the first coil. The shutter device for a small camera, according to claim 7, And a first elastic means for restoring the first rotor to its original state when the first coil is cut off when the power is supplied to the first coil and the first rotor is rotated. Shutter device for small cameras. The method according to claim 8, wherein the first elastic means, The center is fixed to the central axis of rotation of the first rotor, one end is supported by the base portion, the other end is a first torsion spring, characterized in that the first torsion spring supported by the first rotor. The method of claim 1, wherein the aperture portion, It is rotatably coupled to the hinge shaft formed in the base portion, a light amount adjusting hole for adjusting the amount of light passing through the light passing hole is formed, characterized in that consisting of a diaphragm for opening and closing the light passing hole by the rotation operation. Shutter device for small cameras. The method according to claim 10, wherein the aperture plate is formed with a second arc-shaped hole to which the second drive shaft of the second rotor is coupled, the aperture plate is to open and close the light passing hole when the second drive shaft is circular motion Shutter device for a small camera, characterized in that installed in the base portion. The method of claim 1, wherein the compact camera shutter device, And a second yoke coupled to the center of the second coil and magnetized when power is supplied to the second coil. The method of claim 1, wherein the compact camera shutter device, And a second elastic means for restoring the second rotor to its original state when the power is cut off when the power is supplied to the second coil and the second rotor is rotated. Shutter device for small cameras. The method of claim 13, wherein the second elastic means, The center of the second rotor is fixed to the center of the shaft, one end is supported on the base portion, the other end is a small torsion spring shutter device, characterized in that the second torsion spring supported by the second rotor. The method of claim 1, wherein the compact camera shutter device, A third light through hole coupled to the base part and corresponding to the light through hole is formed, and a cover for covering the shutter part, the first driving part, the aperture part, and the second driving part is further provided. Shutter device for small cameras. The method of claim 1, wherein the compact camera shutter device, Small shutter device for the camera, characterized in that the separation plate is installed between the shutter and the aperture to prevent the collision. A coil wound several times and receiving power from an outside; A magnet located at a distance exposed in the magnetic field of the coil; And The rotor is embedded in the eccentric position, the first polarity and the second polarity of the magnet is axially supported on the base so as to be selectively exposed in the magnetic field of the coil, and comprises a rotor for transmitting a force according to the rotation operation to the outside Drive device, characterized in that. The method of claim 17, wherein the drive unit, And a yoke coupled to the center of the coil, the yoke being magnetized when power is supplied to the coil. delete delete