KR20110026337A - Shutter device and micro camera have the same - Google Patents

Abstract

PURPOSE: A shutter device and a small camera with the same are provided to improve the working reliability of a shutter apparatus and simplify the inner structure of a shutter device. CONSTITUTION: A shutter device and a small camera with the same comprises a housing(220), a first electromagnet(231), a second electromagnet(232), a third electromagnet, a fourth electromagnet, a first driving arm(235), a second driving arm(245), a shutter blade(270), and an iris blade(280). A light through-hole(229) is formed in the housing. The first electromagnet, the second electromagnet, the third electromagnet, and the fourth electromagnet are mounted on one side and the other side of the housing. The rotary shaft is formed on one end of the first driving arm and the second driving arm. The permanent magnet is formed on the other end of the first driving arm and the second driving arm. The first driving arm and the second driving arm comprise drive pins that are coupled with one side of the permanent magnet in parallel to the rotary shaft. The shutter blade and the iris blade opens/closes and covers the light through-hole with engaging with the position change of the drive pins of the first and second driving arms.

Description

Shutter device and compact camera equipped with it {SHUTTER DEVICE AND MICRO CAMERA HAVE THE SAME}

The present invention relates to a shutter device and a small camera having the same.

Since small cameras have been installed in portable terminals such as mobile phones and PDAs, research and development have been carried out to improve the performance of small cameras.

Currently, portable cameras have high resolution and high performance miniature cameras, and such miniature cameras include auto focus, mechanical shutters, iris and neutral density filters. do.

Such devices have to be simplified in structure for miniaturization and slimming of the mobile terminal, and in particular, the shutter and the aperture require fast and accurate operation in order to obtain high quality captured images.

In order to operate the shutter and iris quickly and accurately, the driving unit mounted in the shutter device should have sufficient driving force, but in order to increase the driving force, the driving unit may have a large size.

In addition, the driving unit applied to the shutter device of a general small camera uses a method of rotating a permanent magnet using an electromagnet. Since the driving pin is installed on a rotation shaft of the permanent magnet, the permanent magnet is transmitted through the driving pin as the driving pin becomes longer. Rotation force, that is, the driving force was weak.

The present invention has been made in view of the above-mentioned disadvantages, and it is possible to provide a shutter apparatus and a small camera having the same, which can be miniaturized and reduced in weight, but the driving force is not reduced.

In order to achieve the above object, according to an aspect of the present invention, the light-passing hole for passing the light is formed, and the first electromagnet and the second electromagnet and the third seated to correspond to each other on one side and the other side of the housing, respectively Electromagnets and fourth electromagnets, one end is formed with a rotating shaft rotatably supported in the housing, the other end is provided with a permanent magnet, one side of the permanent magnet is provided with a driving pin coupled in a direction parallel to the rotation axis, respectively And a shutter blade and an aperture blade configured to open and close the light passing hole in association with the movement of the driving arm and the second driving arm, and the driving pin of the first driving arm and the driving pin of the second driving arm. The permanent magnet of the arm is movably disposed between the first electromagnet and the second electromagnet, and the permanent magnet of the second drive arm is movably arranged between the third electromagnet and the fourth electromagnet. The shutter device is provided, characterized in that the.

The housing may further include a plurality of hinge pins rotatably supporting the shutter blade and the aperture blade, respectively.

Rotating directions of the shutter blade and the aperture blade may be opposite to each other.

The central axis of the first to fourth electromagnets may be perpendicular to the central axis of the light passing hole.

The first to fourth electromagnets may include hollow bobbin-shaped bobbins and coils wound around the outer circumferential surface of the bobbin.

Permanent magnets, one side of the movable direction can be magnetized to the N pole, the other side S pole.

The same magnetic poles may be simultaneously generated at end portions of the first electromagnet and the second electromagnet that face each other, and the same magnetic poles may be simultaneously generated on one side of the third electromagnet and one side of the fourth electromagnet.

Shutter device, characterized in that the light amount control hole is formed in the portion covering the light passing hole of the aperture blade.

The aperture blade may further include an ND filter coupled to the light amount adjusting hole.

In order to achieve the above object, according to another aspect of the present invention there is provided a compact camera having an image sensor, at least one lens disposed on one side of the image sensor, and a shutter device as described above.

According to an embodiment of the present invention, the shutter device can be made smaller and lighter, but the shutter device can have sufficient driving force, the operation reliability of the shutter device can be increased, and the time required for manufacturing by simplifying the internal structure of the shutter device. And effort is saved.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of a shutter device according to an embodiment of the present invention.

Referring to FIG. 1, a shutter device 200 according to an embodiment of the present invention includes a housing 220, a first driver 230, a second driver 240, a fixing plate 250, and a middle plate 260. ), A shutter blade 270, an aperture blade 280, and a top plate 210 are included.

The light passing hole through which the light passes is formed in the housing 220. The light passing hole is formed to expose an image sensor (not shown) through light.

The first electromagnet 231 and the second electromagnet 232 are spaced apart from each other on one side of the housing 220, and the third electromagnet 241 and the fourth electromagnet 242 are spaced apart from each other on the other side of the housing 220. It is settled down. In this case, the first to fourth electromagnets 231, 232, 241, and 242 are disposed such that each central axis is perpendicular to the central axis of the light passing hole 229. In addition, one end of each of the first electromagnets 231 and the second electromagnet 232 is disposed to face each other, and the third electromagnet 241 and the fourth electromagnet 242 are also disposed to face each other.

When electric power is supplied to the first electromagnet 231 and the second electromagnet 232, the same magnetic poles are generated at the ends facing each other at the same time. When the magnetic poles are formed by supplying power to the third electromagnet 241 and the fourth electromagnet 242, the same magnetic poles are generated at the ends facing each other.

The first driving unit 230 includes the first electromagnet 231, the second electromagnet 232, and the first driving arm 235 as described above. The first driving arm 235 includes a rotation shaft 236 and a driving pin 239, and the structure of the first driving arm 235 will be described with reference to FIG. 2.

2 is a partial perspective view illustrating the first driving unit of the shutter apparatus according to an embodiment of the present invention.

The first driving arm 235 includes a rotation shaft 236, a rod 237, a permanent magnet 238, and a driving pin 239.

A rotating shaft 236 is formed at one end of the rod-shaped rod 237. The axis of rotation 236 has a axis of rotation perpendicular to the longitudinal axis of the rod 237. The other end of the rod 237 is provided with a permanent magnet 238, the driving pin 239 is coupled to one side of the permanent magnet 238. The driving pin 239 is disposed in parallel with the rotation shaft 236.

The lower end of the rotation shaft 236 is rotatably supported by the housing 220. Accordingly, the permanent magnet 238 is rotated, that is, moved around the rotation axis 236. When one end of the rotating shaft 236 is rotatably supported by the housing 220, that is, when the first driving arm 235 is disposed in the housing 220, the permanent magnet 238 is formed of the first electromagnet 231 and the second. It is located between the spaced intervals of the electromagnet 232.

The permanent magnet 238 may move between the first electromagnet 231 and the second electromagnet 232 by rotating the rotation shaft 236. Here, the permanent magnet 238 is magnetized to one side of the movable direction N pole, the other side S pole. That is, assuming that the direction in which the permanent magnet 238 faces one end of the first electromagnet 231 is magnetized to the N pole, the direction facing one end of the second electromagnet 232 is magnetized to the S pole, It is also possible to magnetize in the opposite direction.

As described above, when electric power is supplied to the first electromagnet 231 and the second electromagnet 232, the same magnetic poles are simultaneously formed at the ends facing each other. Accordingly, when the permanent magnet 238 is supplied with electric power to the first electromagnet 231 and the second electromagnet 232, the permanent magnet 238 is in the direction of the first electromagnet 231 or the second electromagnet 232 by the attraction force and the repulsive force generated by the magnetic force. Is moved to.

For example, when the side facing the first electromagnet 231 of the permanent magnet 238 is magnetized to the N pole, and the side facing the second electromagnet 232 is magnetized to the S pole, the first electromagnet 231 and When the N poles are formed at the ends of the second electromagnet 232 facing each other at the same time, a repulsive force is applied between the permanent magnet 238 and the first electromagnet 231 and the permanent magnet 238 and the second electromagnet 232. There is an attraction force in between. Accordingly, the permanent magnet 238 is moved in the direction of the second electromagnet 232 while the rod 237 is rotated by the rotation of the rotary shaft 236.

On the contrary, when the S poles are formed at the end portions of the first electromagnet 231 and the second electromagnet 232 facing each other at the same time, the permanent magnet 238 is moved in the direction of the first electromagnet 231.

As such, when magnetic poles are formed in the first electromagnet 231 and the second electromagnet 232, the permanent magnet 238 moves in the direction of the first electromagnet 231 or the second electromagnet 232, and the permanent magnet 238. The driving pin 239 coupled to is also moved. At this time, since the attraction and repulsive force acts on the permanent magnet 238 at the same time and the driving pin 239 is directly coupled to the permanent magnet 238, the permanent magnet (231) by the first electromagnet 231 and the second electromagnet 232 ( The force generated by the magnetic force applied to 238 is transmitted to the drive pin 239 with little loss.

Referring back to FIG. 1, the second driver 240 includes the third electromagnet 241, the fourth electromagnet 242, and the second drive arm 245 as described above. The second driving arm 245 includes a rotation shaft 246 and a driving pin 249.

Here, the rotation shaft 246 and the driving pin 249 of the second driving arm 245 are the same as the rotation shaft 236 and the driving pin 239 of the first driving arm 245 described with reference to FIG. 2. In addition, the second drive arm 245 is provided with a rod and a permanent magnet (not shown), which is the same as the rod 237 and the permanent magnet 238 of the first drive arm 235.

The operation of the third electromagnet 241 and the fourth electromagnet 242 corresponds to the operation of the first electromagnet 231 and the second electromagnet 232, and the third electromagnet 241 and the fourth electromagnet 242. Operation of the second drive arm 245 by means corresponds to the operation of the first drive arm 235.

Therefore, since the operation of the second operation unit 240 corresponds to the operation of the first operation unit 230, the description of the second operation unit 240 to the operation of the first operation unit 230 described with reference to FIG. I will replace it.

The fixing plate 250 is coupled to one side and the other side of the housing 220. Shaft holes 251 and 252 and guide holes 253 and 254 are formed in the fixing plate 250. The shaft holes 251 and 252 are respectively rotatably supported by the rotation shaft 236 of the first driving arm 235 and the upper end of the rotation shaft 246 of the second driving arm 245.

The driving pins 239 of the first driving arm 235 and the driving pins 249 of the second driving arm 245 pass through the guide holes 253 and 254, and the guide holes 253 and 254 are driving pins ( 239 and 249 are formed in a shape corresponding to a trajectory moved by the first to fourth electromagnets 231, 232, 241 and 242, and do not interfere with the movement of the driving pins 239 and 249.

The lower portion of the housing 220 to which the fixing plate 250 is coupled is formed to be lower by the thickness of the fixing plate 250 than the edge portion where the light passage hole 229 of the housing 220 is formed. Therefore, when the fixing plate 250 is coupled to the housing 220, the upper surface of the housing 220 and the upper surface of the fixing plate 250 may have the same or similar height.

The middle plate 260 simultaneously covers the upper surface of the housing 220 and the upper surface of the fixing plate 250 and is coupled to the housing 220. The middle plate 260 has light passing holes 269 and long holes 261 and 262. The light passage hole 269 is formed such that the central axis of the light passage hole 269 coincides with the central axis of the light passage hole 229 of the housing 220. The driving pins 239 and 249 pass through the long holes 261 and 262, and the long holes 261 and 262 are formed in a shape and a position corresponding to the guide holes 253 and 254 of the fixing plate 250. It does not interfere with the movement of (239, 249).

The shutter blade 270 and the aperture blade 280 are installed on the middle plate 260. A pinhole 272 is formed at one side of the shutter blade 270, and a connection hole 271 is formed at one end thereof. A pinhole 282 is formed at one side of the aperture blade 280, and a connection hole 281 is formed at one end thereof.

Hinge pins (see 275 and 285 in FIG. 3) are coupled to the pinhole 272 of the shutter blade 270 and the pinhole 282 of the aperture blade 280, and the lower end of the hinge pins 275 and 285 is a middle plate ( 260 respectively. The upper end of the driving pin 239 of the first driving arm 235 is inserted into the connecting hole 271 of the shutter blade 270, and the second driving arm is inserted into the connecting hole 281 of the aperture blade 280. The upper end of the driving pin 249 of 245 is inserted.

The top plate 210 covers the middle plate 260, the shutter blade 270, and the aperture blade 280 and is coupled to the housing 220. The light transmission hole 219 and the shaft holes 211 and 212 are formed in the top plate 210. The light transmission hole 219 is formed such that the central axis of the light transmission hole 219 coincides with the central axis of the housing 220 and the central axis of the middle plate 269. The upper ends of the hinge pins 275 and 285 are inserted into and supported by the shaft holes 211 and 212.

The shutter blade 270 is rotatably supported around the hinge pin 275 inserted into the pinhole 272, and the other side of the shutter blade 270 may cover the light passing holes 219, 229, and 269. When the shutter blade 270 is rotated, the light passing holes 219, 229, and 269 are closed or opened by the other side of the shutter blade 270.

Here, the diameter of each of the light passing holes 219, 229, 269 may be formed differently as shown. This is a case in which the central axis of each of the light passing holes 219, 229, and 269 does not coincide with each other due to a machining error in the housing 220, the middle plate 260, and the top plate 210.

Since the light passing holes 219, 229, and 269 should not pass when the light is closed by the shutter blades 270, the diameter of the light passing holes 269 closest to the shutter blades 270 is formed to be the smallest. In general, in the shutter device 200 according to an embodiment of the present invention, the diameter of the light passing hole 269 of the middle plate 260 is the smallest.

The aperture blade 280 is rotatably supported around the hinge pin 285 inserted into the pinhole 282, and the other side of the aperture blade 280 may cover the light passing holes 219, 229, and 269. It is manufactured to have a shape, and when the aperture blade 280 is rotated, the light passing holes 219, 229, and 269 are covered or not covered by the other side of the aperture blade 280.

A light amount adjusting hole 289 is formed in a portion of the aperture blade 280 that covers the light passing holes 219, 229, and 269. The light quantity adjusting hole 289 is for adjusting the amount of light passing through the light passing holes 219, 229 and 269. As the diameter of the light adjusting hole 289 decreases, the light passing holes 219, 229 and 269 are adjusted. The amount of light passing through is reduced.

3 and 4 are perspective views for explaining the operation of the shutter device according to an embodiment of the present invention.

Referring to FIG. 3, the light through hole (see 269 in FIG. 1) is closed and covered by the shutter blade 270 and the aperture blade 280. In order for the shutter blades 270 and the aperture blades 280 to rotate to close the light passing holes 269 as indicated by the arrows, the driving pins 239 and 249 must be moved as indicated by the arrows.

As described above, when the driving pin 239 of the first driving unit 230 is moved by the operation of the first electromagnet 231 and the second electromagnet 232, the shutter blade 270 is the driving pin 239. One end formed with the connected connection hole 271 is rotated by the movement of the driving pin 239. Accordingly, the shutter blade 270 rotates about the hinge pin 275 to close the light passing hole 269 at the other end.

When the driving pin 249 of the second driving unit 240 is moved by the operation of the third electromagnet 241 and the fourth electromagnet 242, the aperture blade 280 has a connection hole 281 to which the driving pin 249 is connected. One end of which is formed) is rotated by the movement of the driving pin 249. Therefore, the aperture blade 280 is rotated around the hinge pin 285 to cover the light passing hole 269 to the other end where the light amount adjusting hole 289 is formed.

Referring to FIG. 4, the other end of each of the shutter blade 270 and the aperture blade 280 does not open or cover the light passing hole 269, respectively.

That is, the driving pins 239 and 249 are moved as indicated by arrows, and one end of each of the shutter blades 270 and the aperture blades 280 connected thereto is indicated by arrows around the hinge pins 275 and 285. As described above, the other end rotates in the opposite direction, and the other end rotates in the edge direction of the housing 220. Therefore, light passes through the light passing hole 269.

As such, the shutter device 200 according to an embodiment of the present invention controls whether light passes by opening and closing the light passing hole 269 with the shutter blade, and passes the light through the aperture blade 280 when passing the light. You can adjust the amount of light that passes through the ball.

In a small camera having a shutter device according to an embodiment of the present invention, which is not shown, an image sensor that detects subject information from light passing through the shutter device 200, that is, an image, and converts the image into an electrical video signal. And at least one lens disposed on one side of the image sensor to adjust an image to be accurately formed on a sensing unit formed on one surface of the image sensor.

The light passing through the at least one lens passes through the shutter device 200 and reaches the image sensor. When the user operates the shutter device 200 by pressing a button to capture a specific subject, the shutter blade 270 opens the light passing hole 269 from the state where the light passing hole 269 is closed. Rotate to and then close the light passing hole (269).

That is, the light passing through the lens reaches the image sensor during the time that the shutter blade 270 opens the light passing hole 269, and the image sensor detecting the light converts the light into an electric image signal.

When the object moving at high speed or the amount of light is sufficient, the shutter speed should be shortened, and thus the time interval for the shutter blade 270 to open and close the light passing hole 269 should be shortened. On the contrary, when the amount of light is insufficient to convert the light that reaches the image sensor into an image signal, the shutter speed must be long, so that the time interval between the shutter blade 270 opening and closing the light passing hole 269 is long. Lose.

The operation of the shutter blade 270 depends on the movement of the driving pin 239. As described above, in order to operate the shutter blade 270, the time for changing the direction of the current supplied to the first electromagnet 231 and the second electromagnet 232 is adjusted.

That is, when the user does not press the button or the like, the permanent magnet 238 of the first operating arm 235 is maintained in the state moved in the direction of the first electromagnet 231, and the user presses the button to take a picture. When the pressing operation is performed, the direction of the electric current supplied to the first electromagnet 231 and the second electromagnet 232 is reversed so that the permanent magnet 238 is moved in the direction of the second electromagnet 232 so that the shutter blade 270 is moved. To open the light passing hole 269. After the predetermined time has elapsed, the shutter blade 270 closes the light passing hole 269 by changing the direction of the current in reverse so that the permanent magnet 238 moves in the direction of the first electromagnet 231 again. Rotate 270.

If the amount of light is excessive or excessive, or to adjust the amount of light passing through the light passing hole 269 in order to give a special effect to the captured image, the aperture blade 280 is rotated according to a user's operation. That is, when the user operates the small camera equipped with the shutter device according to the embodiment of the present invention to adjust the amount of light, the direction of the current supplied to the third electromagnet 241 and the fourth electromagnet 242 may be changed. The permanent magnet (not shown) of the second driver 240 moves in the direction of the third electromagnet 241 or in the direction of the fourth electromagnet 242.

Therefore, the driving pin 249 is moved, and thus the aperture blade 280 covers or does not cover the light amount adjusting hole 269. When the aperture blade 280 is rotated to cover the light adjustment hole 269, the amount of light passing through the light passage hole 269 is reduced by the light adjustment hole 289, and the aperture blade 280 is adjusted to the light adjustment hole 269. When rotated so as not to cover), the light incident to the light amount adjusting hole 289 passes through the light amount adjusting hole 289 in a state in which the light amount is not adjusted.

In order to adjust the amount of light passing through the light adjustment hole 269, the position of the aperture blade 280 is positioned to cover the light adjustment hole 269 before the shutter blade 270 opens the light passage hole 269. The aperture blade 280 must not be rotated before the shutter blade 270 is closed.

As described above, the shutter blade 270 may be operated by adjusting the direction of current supplied to the first electromagnet 231 and the second electromagnet 232, and the aperture blade 280 may be operated by the third electromagnet 241. And the direction of the current supplied to the fourth electromagnet 242.

At this time, the connection holes 271 and 281 formed at one end of each of the shutter blade 270 and the aperture blade 280 are driven pins 239 and 249 and hinge pins 275 by the movement of the driving pins 239 and 249. Since the distance of each is changed, it is formed in the shape of a long hole so that a force other than the force to rotate the shutter blade 270 and the aperture blade 280 is not applied.

As described above, the central axis of each of the first to fourth electromagnets 231, 232, 241, and 242 has a direction perpendicular to the central axis of the light passing hole 269. Therefore, since the housing 220 is not affected by the longitudinal direction of the first to fourth electromagnets 231, 232, 241, and 242, the housing 220 may be slim. Therefore, since the shutter device 200 according to the embodiment of the present invention does not become thick, it is possible to miniaturize it. Therefore, the miniature camera equipped with the shutter device according to the embodiment of the present invention can be miniaturized.

In addition, the first driving unit 230 and the second driving unit 240 of the shutter device 200 according to an embodiment of the present invention has a simple structure and a manpower applied to the permanent magnet 238 (not shown) at the same time. Since the repulsive force minimizes the loss of force and is transmitted as a force for directly moving the driving pins 239 and 249, respectively, the first driving unit 230 and the second driving unit 240 may obtain sufficient driving force compared to their magnitudes. Therefore, since the shutter device 200 according to the embodiment of the present invention is easy to assemble, the time and cost required for manufacturing are saved, and sufficient driving force can be obtained compared to the size, so that the shutter device 200 can be miniaturized and operation reliability is increased.

Although not shown, the first to fourth electromagnets 231, 232, 241, and 242 each include a bobbin of a hollow park cylinder and a coil wound around the outer circumferential surface of the bobbin. By forming a space in the center of the bobbin, the bobbin is reduced in weight. Therefore, the shutter device 200 according to the embodiment of the present invention is reduced in weight.

For reference, although not shown, an ND filter for adjusting the amount of light and a filter having various effects may be combined with the light amount adjusting hole 289 formed in the aperture blade 280. Since the ND filter is well known, a detailed description thereof will be omitted.

Although the shutter apparatus and the compact camera having the same according to the exemplary embodiment of the present invention have been described above, the spirit of the present invention is not limited to the exemplary embodiments set forth herein, and those skilled in the art will understand the spirit of the present invention. Within the scope of the present invention, other embodiments may be easily proposed by adding, changing, deleting, or adding components, but this will also fall within the scope of the present invention.

1 is an exploded perspective view of a shutter device according to an embodiment of the present invention.

2 is a partial perspective view illustrating a first driving unit of a shutter device according to an embodiment of the present invention.

3 and 4 are perspective views for explaining the operation of the shutter device according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

200: shutter device 220: housing

229: light passing 231: first electromagnet

232: second electromagnet 235: first drive arm

236, 246: rotation axis 238, 248: permanent magnet

239 and 249: drive pin 245: second drive arm

270: shutter blade 280: aperture blade

Claims (11)

A housing having a light passing hole through which light passes; A first electromagnet and a second electromagnet, a third electromagnet and a fourth electromagnet respectively seated on one side and the other side of the housing to correspond to each other; One end of the rotating shaft is rotatably supported by the housing, the other end is provided with a permanent magnet, one side of the permanent magnet is provided with a driving pin coupled in a direction parallel to the rotation axis, respectively the first drive arm And a second drive arm; And It includes a shutter blade and the aperture blade for opening and closing the light passing hole in conjunction with the position movement of the drive pin of the first drive arm and the drive pin of the second drive arm, The permanent magnet of the first driving arm is disposed to be movable between the first electromagnet and the second electromagnet, and the permanent magnet of the second driving arm is movable between the third electromagnet and the fourth electromagnet. Shutter device, characterized in that arranged to. The method of claim 1, The housing, And a plurality of hinge pins rotatably supporting the shutter blades and the aperture blades, respectively. The method of claim 2, And a rotation direction of the shutter blade and the aperture blade is opposite to each other. The method of claim 1, And a central axis of the first to fourth electromagnets is perpendicular to the central axis of the light passing hole. The method of claim 1, The first to fourth electromagnets, Hollow park cylindrical bobbin; And And a coil wound around an outer circumferential surface of the bobbin. The method of claim 1, The permanent magnet, the shutter device, characterized in that one side of the movable direction is magnetized to the N pole, the other side S pole. The method of claim 6, Shutter device, characterized in that the same stimulus is generated at the same time at the opposite end of the first electromagnet and the second electromagnet respectively. The method of claim 6, Shutter device, characterized in that the same magnetic pole is generated at the same end of the third electromagnet and the fourth electromagnet facing each other. The method of claim 1, Shutter device, characterized in that the light amount control hole is formed in the portion covering the light passing hole of the aperture blade. 10. The method of claim 9, The aperture blade, Shutter device further comprises an ND filter coupled to the light adjustment hole. Image sensor; At least one lens disposed on one side of the image sensor; And A compact camera comprising the shutter device according to any one of claims 1 to 9.

Images