KR101197077B1 - Autofocusing and optical image stabilizing apparutus for camera, and the camera with the same - Google Patents

Abstract

The present invention is a camera auto-focus and camera shake correction device and a compact camera equipped with such a device, for moving the lens in the vertical direction by using a coil and a magnet to adjust the focus of the subject, to compensate for the camera shake in the horizontal direction An auto focus and image stabilization apparatus.
An autofocus and camera shake correction apparatus for a camera of the present invention includes: a first blade mounted horizontally inside the camera and having a first coil member mounted outside; A second blade mounted inside the lens, mounted up and down inside the first blade, and having a second coil member mounted outside; The magnet is mounted inside the camera and is disposed outside the first blade, wherein the second coil member is wound around a central axis of the second blade, and the first coil member is formed by the second coil member. It is wound around an axis perpendicular to the central axis to be wound. A side surface of the first blade has a through hole formed therein so as to penetrate an inner side and an outer side thereof, and the first coil member is wound around the through hole. An insertion hole communicating with each other, the second coil member having an insertion portion inserted into the insertion hole and disposed adjacent to the magnet, and having an upper and lower length of the insertion portion being shorter than an upper and lower distance of the insertion hole, The magnet may include: a first pole portion polarized toward the second coil member; And a second pole portion formed on the upper and lower portions of the first pole portion and polarized in the opposite direction to the first pole portion, to form a magnetic field around the first coil member and the second coil member. The first blade moves horizontally with the second blade due to the interaction of the first electromagnetic field generated when the power is applied to the first coil member and the magnetic field generated by the magnet, and is generated when the power is applied to the second coil member. The second blade is moved up and down inside the first blade by the interaction between the second electromagnetic field and the magnetic field generated in the magnet.

Description

AUTO FOCUSING AND OPTICAL IMAGE STABILIZING APPARUTUS FOR CAMERA, AND THE CAMERA WITH THE SAME}

The present invention is a camera auto-focus and camera shake correction device and a compact camera equipped with such a device, for moving the lens in the vertical direction by using a coil and a magnet to adjust the focus of the subject, to compensate for the camera shake in the horizontal direction It relates to an auto focus and image stabilization device and a small camera equipped with such a device.

1 is a perspective view of an image recording apparatus with a conventional image stabilization function, Figure 2 is an exploded perspective view of an image recording apparatus with a conventional image stabilization function, Figure 3 is an exploded perspective view showing an enlarged A of FIG. to be.

As shown in FIGS. 1 to 3, a conventional compact camera apparatus generally includes a housing 10, a lens unit 20, a first coil 30, a first magnet 40, and an iron piece 50. Is done.

The lens unit 20 is mounted in the housing 10 to be moved in the horizontal direction.

The lens unit 20 has a lens 60 mounted therein, and functions to adjust the focus of the subject by moving the lens 60 in the optical axis direction of the lens 60.

In detail, the lens unit 20 includes a lens barrel 21 surrounding the lens 60, a holder 22 into which the lens barrel 21 is inserted, and mounted inside the holder 22. And a second coil 23 and a second coil 24 mounted on an outer side of the lens barrel 21. The electromagnetic field and the second magnet generated when power is applied to the second coil 24. The lens barrel 21 flows in the optical axis direction of the lens 60 by the interaction of the magnetic field generated at 23.

The first coil 30 is mounted to the outside of the lens unit 20.

The first coil 30 is wound in a direction rotating about the iron piece 50.

In addition, the first magnet 40 is mounted on the inner surface of the housing 10 adjacent to the first coil 30, a plurality of the first magnet 40 is in contact with the upper and lower ends of the iron piece 50, respectively.

One end of the iron piece 50 is in contact with the first magnet 40 and the other end is inserted into the center of the first coil 30 to be adjacent to the first coil 30.

By the above configuration, power is applied to the first coil 30 and the lens unit 20 is caused by the interaction of the electromagnetic field generated by the first coil 30 with the magnetic field generated by the first magnet 40. ) Moves in the horizontal direction to correct the shaking of the subject.

The conventional compact camera device has a problem in that the number of parts is increased and the size is complicated as the first magnet 40 and the second magnet 23 for adjusting focus are separately configured. have.

The present invention is to solve the above-mentioned problems, by operating the image stabilization and focus control using the same magnets, not a separate magnet, to reduce the number of parts and to simplify the structure while reducing the size and shake correction and focus adjustment It is an object of the present invention to provide an easy autofocus and image stabilization device for a camera and a small camera equipped with the device.

In order to achieve the above object, an autofocus and camera shake correction apparatus for a camera of the present invention comprises: a first blade mounted horizontally inside the camera and having a first coil member mounted on the outside thereof; A second blade mounted inside the lens, mounted up and down inside the first blade, and having a second coil member mounted outside; The magnet is mounted inside the camera and is disposed outside the first blade, wherein the second coil member is wound around a central axis of the second blade, and the first coil member is formed by the second coil member. It is wound around an axis perpendicular to the central axis to be wound. A side surface of the first blade has a through hole formed therein so as to penetrate an inner side and an outer side thereof, and the first coil member is wound around the through hole. An insertion hole communicating with each other, the second coil member having an insertion portion inserted into the insertion hole and disposed adjacent to the magnet, and having an upper and lower length of the insertion portion being shorter than an upper and lower distance of the insertion hole, The magnet may include: a first pole portion polarized toward the second coil member; And a second pole portion formed on the upper and lower portions of the first pole portion and polarized in the opposite direction to the first pole portion, to form a magnetic field around the first coil member and the second coil member. The first blade moves horizontally with the second blade due to the interaction of the first electromagnetic field generated when the power is applied to the first coil member and the magnetic field generated by the magnet, and is generated when the power is applied to the second coil member. The second blade is moved up and down inside the first blade by the interaction between the second electromagnetic field and the magnetic field generated by the magnet.

The vertical length of the magnet is longer than the vertical length of the first coil member, and the vertical length of the first pole part is longer than the vertical distance of the insertion hole.

The first blade is formed in a rectangular shape, the second blade is formed in an octagonal pillar shape, the first coil member is composed of four mounted on each outer surface of the first blade, disposed in a direction facing each other The first coil member is electrically connected to receive magnetic force in the same direction by the magnet when power is applied.

One end is mounted to the first blade and the other end is mounted to the second blade further comprises a support spring for supporting the second blade in the upward direction, wherein the support spring is applied power to the second coil member Thus, the second blade is elastically deformed when it moves up and down.

A housing opened up and down; A first blade mounted horizontally in the housing; A first coil member mounted to the outside of the first blade; A second blade mounted inside the lens and mounted upside down in the first blade; A second coil member wound around a central axis of the second blade and mounted to the outside of the second blade; A support spring having one end mounted on the first blade and the other end mounted on the second blade to support the second blade upward; A magnet mounted to an inner side of the housing and disposed outside the first blade; A wire spring having an upper end mounted on the housing and the other end mounted on the first blade to support the first blade; A controller for applying power to the first coil member and the second coil member; An image sensor disposed under the second blade to capture an image of a subject passing through the lens, wherein the first coil member is wound around an axis perpendicular to a central axis around which the second coil member is wound; The magnet may include: a first pole portion polarized toward the second coil member; And a second pole portion formed on the upper and lower portions of the first pole portion and polarized in the opposite direction to the first pole portion, to form a magnetic field around the first coil member and the second coil member. The first blade moves horizontally with the second blade due to the interaction of the first electromagnetic field generated when the power is applied to the first coil member and the magnetic field generated by the magnet, and occurs when the power is applied to the second coil member. The second blade is moved up and down inside the first blade by the interaction between the second electromagnetic field and the magnetic field generated by the magnet.

The housing is formed in a hexahedral shape, the wire spring is composed of eight arranged in a diagonal direction of each two inside the corner of the housing.

The first blade is formed in a quadrangular shape, and a mounting groove into which the wire spring is inserted is formed, and a lower portion of the first blade protrudes outwardly, and an inner plate is formed inwardly. A first mounting groove formed at each corner of the first blade and the mounting groove formed on the protrusion; An outer wire spring formed of a second mounting groove formed in the inner plate, the wire spring having an upper end fixedly mounted to the housing and a lower end inserted into the first mounting groove; The upper end is fixedly mounted to the housing and the lower end is formed of an inner wire spring inserted into the second mounting groove.

The wire spring is connected to the first coil member and the second coil member, respectively, to supply power to the first coil member and the second coil member by the control unit, and the first coil member includes four first coil members. The first coil members mounted on the outer surfaces of the blades and disposed in opposite directions are electrically connected to each other so that the first blades are elastically deformed while receiving the magnetic force in the same direction by the magnet when the power is applied. And horizontally move the second blade.

A lifting groove penetrating up and down is formed in the inner plate formed in the first blade, and a lifting protrusion inserted into the lifting groove is protruded from the lower portion of the second blade, and one end of the support spring is formed in the first blade. The lower end is fixedly mounted, the other end is fixedly mounted to the lifting projection, when power is applied to the second coil member, the second blade is prevented from horizontal movement and moves up and down.

The housing may include: a spacer disposed on the first blade and the second blade, wherein the wire spring is fixedly mounted; A hub disposed below the first blade and the second blade; Comprising a case for covering the spacer and the first blade and the second blade, the upper fixing protrusions are formed spaced apart from each other in the lower portion of the spacer protruding, the upper portion of the magnet is inserted between the upper fixing projections, the hub The lower fixing protrusions which are spaced apart from each other are formed to protrude from an upper portion of the lower portion, and the lower portion of the magnet is inserted between the lower fixing protrusions.

The auto focus and image stabilization apparatus for a camera according to the present invention, and the compact camera equipped with the device have the following effects.

By forming the same magnetic field generated in the magnet consisting of the first and second poles around the first coil member and the second coil member, the number of parts is reduced, the structure is simple, the size is reduced, and the shake correction and the focus adjustment are performed. It is easy.

In addition, the vertical length of the insertion portion is shorter than the vertical distance of the insertion hole so that the insertion portion can be moved in and out of the insertion hole, thereby affecting the interaction between the magnetic field of the magnet and the second electromagnetic field generated when power is applied to the second coil member. As a result, the focus of the subject can be easily adjusted by moving the second blade up and down.

In addition, the vertical length of the magnet is longer than the vertical length of the first coil member, thereby forming a sufficient magnetic field around the first coil member and the second coil member to move the first blade and the second blade horizontally and vertically. In addition, the vertical length of the first pole portion is longer than the vertical distance of the insertion hole, so that the direction of the magnetic field interacting with the first electromagnetic field formed by applying power to the first coil member is uniformly formed, thereby horizontally moving the first blade. Easy to move to

In addition, the lifting projection is inserted into the lifting groove is limited in the horizontal movement and the vertical movement, it is possible to easily lift the second blade inside the first blade.

In addition, the through-hole is formed to be open in the upward direction, it is possible to easily mount the second blade equipped with the second coil member inside the first blade.

In addition, the plurality of wire springs are arranged diagonally on the inside and the outside of the mount while supporting the first blade and the second blade horizontally inside the housing to simplify and downsize the structure of the camera.

1 is a perspective view of a conventional image recording apparatus equipped with a camera shake correction function,
2 is an exploded perspective view of an image photographing apparatus equipped with a conventional image stabilization function,
3 is an exploded perspective view showing an enlarged view of A of FIG. 2;
4 is a perspective view of a compact camera equipped with an auto focus and image stabilization device according to an embodiment of the present invention;
5 is an exploded perspective view of a small camera equipped with an auto focus and image stabilization device according to an embodiment of the present invention;
6 is an exploded perspective view of a small camera equipped with an autofocus and image stabilization device according to an embodiment of the present invention;
7 is a perspective view illustrating a state in which a magnet is separated from an autofocus and image stabilization device according to an embodiment of the present invention;
8 is an exploded perspective view of an auto focus and image stabilization device according to an embodiment of the present invention;
9 is a sectional view taken along line BB of FIG.
10 is a cross-sectional view taken along line CC of FIG. 4;
11 is a cross-sectional view taken along line DD of FIG. 4;
12 is a view schematically showing a magnetic field formed around a magnet according to an embodiment of the present invention;
FIG. 13 is a cross-sectional view illustrating a state in which the first blade is horizontally moved in FIG. 11;
14 is a cross-sectional view illustrating a state in which the second blade is vertically moved in FIG. 10;

Figure 4 is a perspective view of a small camera equipped with an auto focus and image stabilization apparatus according to an embodiment of the present invention, Figure 5 is a one-way exploded perspective view of a small camera equipped with an auto focus and image stabilization device according to an embodiment of the present invention 6 is an exploded perspective view of a small camera equipped with an autofocus and image stabilization apparatus according to an embodiment of the present invention, and FIG. 7 is a magnet separated from the autofocus and image stabilization apparatus according to an embodiment of the present invention. 8 is an exploded perspective view of an autofocus and image stabilization device according to an embodiment of the present invention, FIG. 9 is a cross-sectional view taken along line BB of FIG. 4, and FIG. 10 is a line CC of FIG. 4. 11 is a cross-sectional view taken along line DD of FIG. 4, and FIG. 12 is a diagram schematically showing a magnetic field formed around a magnet according to an embodiment of the present invention. to be.

As shown in FIGS. 4 to 12, the auto focus and image stabilization apparatus A of the present invention includes a first blade 200, a first coil member 300, a second blade 400, and a second coil member. 500, the support springs 610 and 620, and the magnet 700.

The first blade 200 is mounted to be horizontally moved inside the housing 100 to be described later, and the second blade 400 is mounted therein.

The first blade 200 is formed in a rectangular shape as shown in Figs. 7 and 8, the first coil member 300 is mounted on the outside.

Specifically, the mounting blade 210 protrudes upward from the first blade 200.

As shown in FIG. 8, the mounting base 210 is formed at each corner of the first blade 200, and a through hole 211 is formed between the mounting base 210 and the mounting base 210. .

The through hole 211 is formed in a rectangular shape and penetrates the inside and the outside of the first blade 200.

In addition, the through hole 211 is opened upward to easily couple the second blade 400 coupled with the second coil member 500 to the inside of the first blade 200 as described below. have.

The protrusion 220 is protruded outward from a lower portion of the first blade 200.

The protrusions 220 are formed at edges of the first blade 200 in which the mounting table 210 is formed.

As shown in FIG. 9, the protrusions 220 are inserted into the seating recesses 133, respectively.

The protrusion 220 moves horizontally in the seating groove 133 when the first blade 200 moves horizontally.

As shown in FIG. 8, a first mounting groove 221 is formed in the protrusion 220.

The wire spring 800 to be described later is fixedly mounted to the first mounting groove 221.

In addition, an inner plate 230 protrudes in an inner direction at a lower portion of the first blade 200.

As shown in FIG. 8, the inner plate 230 protrudes inward from the first blade 200 to form an opening hole 231.

In addition, a second mounting groove 232 is formed in the inner plate 230.

The second mounting grooves 232 are formed inside the corners of the first blade 200 in which the mounting table 210 is formed, and are disposed in a diagonal direction with the first mounting grooves 221.

The wire spring 800 is fixedly mounted to the second mounting groove 232 like the first mounting groove 221.

And the lifting groove 233 is formed in the inner plate 230.

The lifting groove 233 is formed in a rectangular shape and penetrates up and down and communicates with the opening hole 231.

The support protrusion 234 protrudes from the lower surface of the first blade 200, that is, the lower surface of the inner plate 230.

The support protrusion 234 is formed in a rectangular shape and the support springs 610 and 620 are mounted.

The first coil member 300 is made of a thin wire through which a current flows, and is wound around an axis perpendicular to a central axis around which the second coil member 500 to be described later is wound.

That is, as shown in FIG. 7, the first coil member 300 is wound around the through hole 211.

The first coil member 300 is wound in a hollow shape to form an insertion hole 310.

The insertion hole 310 is in communication with the through hole 211.

As shown in FIG. 8, the first coil member 300 is wound along the shape of the through hole 211, and the insertion hole 310 is formed in a quadrangular shape.

The shape of the insertion hole 310 is not specified as a single shape as in the present embodiment, and the second coil member 500 to be described later is inserted into the communication through the through-hole 211.

As described above, the first coil members 300, 300a, 300b, 300c, and 300d are formed of four as shown in FIGS. 7 and 8, that is, the outer surface of the first blade 200, that is, the mounting table 210. Are mounted on each).

The first coil members 300a and 300b mounted as described above and disposed to face each other are electrically connected to each other.

Specifically, the first coil members 300a and 300b disposed in mutually facing directions are electrically connected to each other along the inner plate 230.

The remaining two first coil members 300c and 300d arranged in mutually opposite directions are also electrically connected as described above.

As described above, the first coil member 300 electrically connected to each other receives a magnetic force in the same direction by the magnet 700 when power is applied.

As described above, the first coil member 300 forms a first electromagnetic field around when the power is applied, and the first electromagnetic field is formed by interacting with the magnetic field generated by the magnet 700. 200 is horizontally moved with the second blade 400.

As such, the first blade 200 and the second blade 400 move horizontally, thereby compensating for hand shake, thereby minimizing shaking of the image captured by the image sensor, thereby capturing high quality images.

The second blade 400 is mounted to be moved up and down inside the first blade 200.

The second blade 400 is formed in an octagonal pillar shape as shown in FIG. 8, and a lens hole 401 is formed therein to mount the lens (not shown).

The lens hole 401 communicates with the first through hole 111, the second through hole 121, the opening hole 231, and the third through hole 131, and is disposed below the housing 100. An image sensor (not shown) captures an image of a subject passing through the lens.

A lifting protrusion 410 inserted into the lifting groove 233 is protruded from a lower portion of the second blade 400.

The lifting protrusion 410 is formed in a rectangular shape and moves vertically without moving horizontally inside the lifting groove 233.

Accordingly, the second blade 400 moves horizontally together with the first blade 200 and moves only up and down inside the first blade 200.

The support springs 610 and 620 are mounted to the lower portion of the lifting protrusion 410.

In addition, a coil groove 420 into which the second coil member 500 is inserted is formed on an outer surface of the second blade 400.

As shown in FIGS. 7 and 8, the second coil member 500 is wound around a central axis of the second blade 400 and mounted on the outside of the second blade 400.

The second blade 400 on which the second coil member 500 is mounted is formed so that the through hole 211 is opened upward as described above, so that the second blade 400 is easily mounted in the first blade 200. do.

The second coil member 500 is made of a thin wire through which a current flows inside the same as the first coil member 300.

In detail, the second coil member 500 includes an insertion part 510 and a connection part 520 as shown in FIG. 8.

The insertion part 510 penetrates the through hole 211 and is inserted into the insertion hole 310.

As shown in FIG. 10A, the insertion part 510 inserted into the insertion hole 310 is disposed adjacent to the magnet 700.

More specifically, as shown in FIGS. 10 (a) and 10 (b), the maximum vertical distance D1 between the outer surfaces of the insertion portion 510 is between the outer surfaces of the first blade 200. It is formed longer than the maximum vertical distance (D2) is inserted into the insertion portion 510 is inserted into the insertion hole (310).

In this way, the insertion part 510 is inserted into the insertion hole 310 so that both the first coil member 300 and the second coil member 500 are disposed adjacent to the same magnet 700, so that the number of parts The camera can be miniaturized by reducing the size and simplifying the structure.

In some cases, the maximum vertical distance (D1) between the outer surface of the insertion portion 510 is formed longer than the maximum vertical distance between the outer surface of the first coil member 300 disposed in the direction facing each other to the first 1 may be protruded to the outside of the coil member 300, the maximum vertical distance (D1) between the outer surface of the insertion portion 510 and the maximum vertical distance between the outer surface of the first coil member 300 It is preferable to form the same or short to secure the distance that the first blade 200 and the second blade 400 can move horizontally.

In addition, the vertical length (L1) of the insertion portion 510 is formed shorter than the vertical distance (D3) of the insertion hole (310).

As described above, the vertical length L1 of the insertion portion 510 is shorter than the vertical distance D3 of the insertion hole 310, so that the insertion portion 510 is moved when the second blade 400 moves up and down. It can be moved up and down inside the insertion hole (310).

As shown in FIG. 8, the connection part 520 is inserted into the coil groove 420 and connects the insertion part 510 and the insertion part 510.

The connection part 520 may be inserted into the coil groove 420 to prevent the second coil member 500 from being separated from the second blade 400.

In addition, the connection part 520 may be prevented from coming into contact with the inner surface of the mounting table 210, so that the second blade 400 may be elevated without interference of other members.

In addition, since the wire spring 800 is disposed between the mounting table 210 and the connecting portion 520 as described below, the wire spring 800 is inserted into and disposed in the coil groove 420. The arrangement space of 800) can be secured.

As such, by securing a space in which the wire spring 800 is disposed between the mounting table 210 and the connecting portion 520, the structure may be simplified while miniaturizing the structure.

As described above, the second coil member 500 forms a second electric field around when the power is applied, and the second electric field is formed by the interaction with the magnetic field generated by the magnet 700. 400 to raise and lower the inside of the first blade (200).

In the present embodiment, the insertion part 510 is inserted into the insertion hole 310 so that the insertion part 510 is disposed adjacent to the magnet 700. However, in some cases, the second coil member 500, The second blade 400 may be elevated without the insertion unit 510 being inserted into the insertion hole 310.

As described above, the second blade 400 mounted with the lens moves up and down, thereby automatically adjusting the focus of a subject, thereby making it easy to capture an image.

One end of the support springs 610 and 620 is mounted to the first blade 200 and the other end is mounted to the second blade 400 to support the second blade 400 upward.

Specifically, as shown in FIG. 8, the support springs 610 and 620 may be divided into two branches from one end, and may include two first support springs 610 and two second support springs 620.

As shown in FIG. 10, one end of the first support spring 610 is mounted at the lower end of the support protrusion 234a, and the other end divided into two branches is mounted at the lower end of the lifting protrusion 410a.

In addition, one end of the second support spring 620 is mounted to the lower end of the support protrusion 234b, and the other end divided into two branches is mounted to the lower end of the lifting protrusion 410b.

The support springs 610 and 620 are made of a conductor to electrically connect the wire spring 800 and the second coil member 500 as described below.

The support springs 610 and 620 are made of a metallic material having elastic force to support the second blade 400 upward with respect to the first blade 200.

As described below, when power is applied to the second coil member 500, the support springs 610 and 620 are elastically deformed so that the second blade 400 may move up and down.

In addition, when the power is cut off to the second coil member 500 after the lifting of the second blade 400, the second blade 400 may be returned to its original position by the elastic restoring force of the support springs 610 and 620. have.

The magnet 700 is mounted inside the housing 100, that is, the case 110, and is disposed outside the first blade 200.

As described above, the magnet 700 has an upper portion inserted between the upper fixing protrusions 122 and a lower portion inserted between the lower fixing protrusions 132 and disposed outside the first blade 200. do.

9 and 10, four magnets 700 are disposed adjacent to the first coil member 300 and the second coil member 500, respectively.

Specifically, the magnet 700 is formed in a rectangular shape, and consists of a first pole portion 710 and a second pole portion 720.

The first pole part 710 is polarized toward the second coil member 500.

The second pole portion 720 is formed above and below the first pole portion 710, and is polarized in a direction opposite to that of the first pole portion 710.

More specifically, as shown in FIG. 10, the first pole part 710 has the S coil in the direction disposed adjacent to the second coil member 500, that is, the insertion part 510, and the case 110. The direction arrange | positioned at the inner side surface of) turns into an N pole.

In addition, the direction of the second pole portion 720 disposed adjacent to the first coil member 300 becomes the N pole, and the direction of the second pole portion 720 disposed on the inner surface of the case 110 becomes the S pole.

In some cases, the pole directions of the first pole part 710 and the second pole part 720 may be reversed.

As shown in FIG. 12, the first pole part 710 and the second pole part 720 are polarized to form the first coil member 300 and the second coil member 500, that is, the insertion part 510. It will form a magnetic field around it.

12 shows the direction and flow of the magnetic field with the arrow, the intensity of the magnetic field with the color of the arrow.

As shown in FIGS. 10A and 10B, the vertical length L2 of the magnet 700 is longer than the vertical length L3 of the first coil member 300.

The upper and lower lengths L2 of the magnets 700 are formed longer than the upper and lower lengths L3 of the first coil member 300, so that the upper and lower lengths L2 of the magnet 700 are sufficient around the first coil member 300 and the second coil member 500. It can form a magnetic field.

The vertical length L4 of the first pole part 710 is longer than the vertical distance D3 of the insertion hole 310.

Unlike the present embodiment, when the vertical length L4 of the first pole portion 710 is shorter than the vertical distance D3 of the insertion hole 310, that is, inward direction of the first coil member 300, that is, Since the magnetic fields in different directions act from the first pole portion 710 and the second pole portion 720 toward the insertion hole 310, it may be difficult to horizontally move the first blade 200 in a specific direction. have.

Accordingly, in the present embodiment, the vertical length L4 of the first pole part 710 is longer than the vertical distance D3 of the insertion hole 310 to facilitate horizontal movement of the first blade 200. .

The compact camera equipped with the autofocus and image stabilization apparatus of the present invention is equipped with an autofocus and image stabilization device A therein, and includes a housing 100, an image sensor (not shown), a wire spring 800, and a controller ( Not shown).

That is, the above-described autofocus and camera shake correction device A is mounted inside the housing 100.

The housing 100 is formed in a hexahedral shape, and the incident light passes through a lens (not shown) disposed up and down and disposed inside the second blade 400.

The housing 100 includes a case 110, a spacer 120, and a hub 130.

As shown in FIG. 5, the case 110 has a first penetrating hole 111 through which the incident light projected by the lens mounted on the second blade 400 passes through the upper and lower portions. The lower end is fixedly mounted to the hub 130 by covering the spacer 120, the first blade 200, and the second blade 400.

The spacer 120 is formed in a rectangular plate shape, is mounted on an inner upper surface of the case 110, and the first blade 200 and the second blade 400 are disposed below.

In addition, the spacer 120 is formed with a circular second through hole 121 communicating with the first through hole 111.

5 or 6, the upper fixing protrusion 122 protrudes from the lower portion of the spacer 120.

The upper fixing protrusions 122 are spaced apart from each other so that the upper portion of the magnet 700 is inserted therebetween.

The wire spring 800 is fixedly mounted to the spacer 120.

The hub 130 is formed in the shape of a square plate and the case 110 is mounted on the top.

In addition, the hub 130 is formed with a third through hole 131 through which the incident light passing through the lens penetrates.

In addition, the first blade 200 and the second blade 400 are disposed on the hub 130.

In detail, a lower end of the case 110 is fixedly mounted on an upper portion of the hub 130, and the case 110 covers the first blade 200 and the second blade 400.

In addition, as shown in Figures 5 to 6, the lower fixing protrusion 132 is formed on the upper portion of the hub 130.

The lower fixing protrusions 132 are spaced apart from each other to correspond to the lower portions of the upper fixing protrusions 122, respectively, and the lower portion of the magnet 700 is inserted between the lower fixing protrusions 132.

As shown in FIG. 5, seating grooves 133 are formed at upper corners of the hub 130.

The mounting groove 133 is inserted into the protrusion 220 formed in the first blade 200 to be described later.

An image sensor (not shown) is disposed below the hub 130.

The image sensor is disposed under the third through hole 131, and captures an image of a subject passing through the lens and entering through the third through hole 131.

A control unit (not shown) is mounted on the housing 100.

The controller (not shown) applies power to the first coil member 300 and the second coil member 500.

In addition, a sensor (not shown) is installed inside the housing 100 to detect positions of the first coil member 300 and the second coil member 500.

The sensor measures a relative position change value of the first coil member 300 and the second coil member 500 so that the control unit measures the first coil member 300 or the second coil member according to the measured value of the sensor. Apply power to 500.

The wire spring 800 is attached to the auto focus and image stabilization device (A) inside the housing 100 to support the horizontal.

The wire spring 800 has an upper end mounted on the housing 100 and a lower end mounted on the first blade 200.

Specifically, the wire spring 800 is formed in a straight shape is disposed vertically in the interior of the housing 100.

5 and 6 and 9, the wire spring 800 is composed of eight arranged in a diagonal direction by two inside the corner of the housing 100, that is, the case 110.

The wire spring 800 includes an outer wire spring 801 and an inner wire spring 802.

The outer wire spring 801 has an upper end fixedly mounted to the spacer 120 and a lower end inserted into the first mounting groove 221.

That is, the outer wire spring 801 is disposed between the case 110 and the mounting table 210.

The inner wire spring 802 has an upper end fixedly mounted to the spacer 120 and a lower end inserted into the second mounting groove 232.

That is, the inner wire spring 802 is disposed between the mounting table 210 and the connecting portion 520.

The wire spring 800 is formed of a conductor through which current flows, and is connected to the first coil member 300 and the second coil member 500 to supply power applied from the controller to the first coil member 300. And transfer to the second coil member (500).

Specifically, the upper end of any one wire spring 800 is connected to the control unit, the lower end is connected to one end of the first coil member 300 to apply power to the first coil member 300.

The other end of the first coil member 300a is electrically connected to one end of another first coil member 300b disposed in a direction facing each other as described above, and the other end of the first coil member 300b is One of the other wire springs 800 is connected to a lower end of the wire springs 800, and an upper end of the wire springs 800 connected to the first coil member 300b is connected to the control unit to form a circuit. Will be configured.

In addition, the first coil members 300c and 300d disposed to face each other also form a separate circuit as described above to receive power from the controller.

As such, the four wire springs 800 are connected to the first coil member 300.

The wire spring 800 of any one of the other four wire springs 800 has an upper end connected to the control unit, and a lower end thereof with one end of the first support spring 610 mounted to the support protrusion 234a. Connected.

The other end of the first support spring 610 is mounted to the lifting protrusion 410a and is connected to one end of the second coil member 500.

The other end of the second coil member 500 is connected to the other end of the second support spring 620 mounted on the lifting protrusion 410b, and one end of the second support spring 620 is the other wire spring. One of the 800 is connected to the lower end of the wire spring 800, the upper end is connected to the control unit to form a circuit connected to the second coil member 500.

As described above, six wire springs 800 are used, and the other two wire springs 800 support the first blade 200 and the second blade 400 horizontally inside the housing 100. It is used auxiliary to make.

Hereinafter, a method of operating a small camera equipped with an auto focus and image stabilization device will be described.

FIG. 13 is a cross-sectional view illustrating the horizontal movement of the first blade in FIG. 11, and FIG. 14 is a cross-sectional view illustrating the vertical movement of the second blade in FIG. 10.

As shown in FIG. 11, before power is applied to the first coil member 300 and the second coil member 500, the first blade 200 is connected to the housing 100 by the wire spring 800. ) Is placed in a suspended state inside.

In addition, as shown in FIG. 10 (a), the second blade 400 is disposed to be supported upward in the interior of the first blade 200 by the support springs 610 and 620.

As shown in FIG. 13, when power is applied to any one pair of the first coil members 300 disposed to face each other by the controller (not shown) receiving the signal of the sensor (not shown). The first blade 200 is moved in the horizontal direction by the interaction between the first electromagnetic field generated by the first coil member 300 and the magnetic field generated by the magnet 700.

That is, the first blade 200 and the second blade 400 move to the right together.

At this time, the wire spring 800 is elastically deformed to the right.

Although only the inner wire spring 802 is shown in FIG. 13, the outer wire spring 801, not shown, is also elastically deformed.

When the power is cut off to the first coil member 300, the first blade 200 and the second blade 400 return to their original positions by the elastic restoring force of the wire spring 800.

In addition, when the direction of the current applied to the first coil member 300 is changed by the controller, the first blade 200 and the second blade 400 move to the left direction.

Similarly, when power is applied to the other pair of first coil members 300 by the controller, the first blade 200 and the second blade 400 are moved back and forth in the housing 100 according to the direction of the current. It moves horizontally in the direction.

As such, the first blade 200 and the second blade 400 are horizontally moved in the front, rear, left, and right directions by the controller, such that the lenses mounted on the second blade 400 move together to correct camera shake. do.

As shown in FIG. 14, when power is applied to the second coil member 500 by the controller (not shown) receiving the signal of the sensor (not shown), that is, the second coil member 500, that is, The second blade 400 is formed inside the first blade 200 by the interaction between the second electromagnetic field generated by the insertion part 510 and the connection part 520 and the magnetic field generated by the mall magnet 700. Will rise.

At this time, the support spring is elastically deformed in the upward direction.

As the second blade 400 is raised, the lenses mounted inside the second blade 400 are raised together to adjust the focus of the subject.

In addition, when the direction of the current applied to the second coil member 500 is changed by the controller, the second blade 400 descends.

When the power is cut off to the second coil member 500, the second blade 400 returns to its original position by the elastic restoring force of the support spring.

The auto-focus and image stabilization apparatus for the camera of the present invention and the small camera equipped with the device are not limited to the above-described embodiments, and may be variously modified and implemented within the range to which the technical idea of the present invention is permitted.

DESCRIPTION OF SYMBOLS 100: housing, 110: case, 111: 1st penetration hole, 120: spacer, 121: 2nd penetration hole, 122: upper fixing protrusion, 130: hub, 131: 3rd penetration hole, 132: lower fixing protrusion, 133 : Mounting groove, 200: first blade, 210: mounting table, 211: through hole, 220: protrusion, 221: first mounting groove, 230: inner plate, 231: opening hole, 232: second mounting groove, 233: Lifting groove, 234: support protrusion, 300, 300a, 300b, 300c, 300d: first coil member, 310: insertion hole, 400: second blade, 401: lens hole, 410: lifting protrusion, 420: coil groove, 500: 2nd coil member, 510: insertion part, 520: connection part, 610: first support spring, 620: second support spring, 700: magnet, 710: first pole, 720: second pole, 800: wire spring, 801 : Outer wire spring, 802: inner wire spring,

Claims (10)

A first blade mounted horizontally inside the camera and having a first coil member mounted on the outside thereof;
A second blade mounted inside the lens, mounted up and down inside the first blade, and having a second coil member mounted outside;
Is mounted to the inside of the camera is made of a magnet disposed on the outside of the first blade,
The second coil member is wound around the central axis of the second blade,
The first coil member is wound around an axis perpendicular to the central axis around which the second coil member is wound.
A through hole is formed in the side surface of the first blade so that the inside and the outside penetrate,
The first coil member is wound around the through hole to form an insertion hole in communication with the through hole,
The second coil member is provided with an insertion portion inserted into the insertion hole and disposed adjacent to the magnet,
The vertical length of the insertion portion is formed shorter than the vertical distance of the insertion hole,
The magnet,
A first pole portion polarized toward the second coil member;
A second pole portion formed on the upper and lower portions of the first pole portion and polarized in the opposite direction from the first pole portion to form a magnetic field around the first coil member and the second coil member,
The first blade moves horizontally with the second blade by the interaction of the first electromagnetic field generated when the power is applied to the first coil member and the magnetic field generated by the magnet,
Auto focus for the camera, characterized in that the second blade is moved up and down inside the first blade by the interaction of the second electromagnetic field generated when the power supply to the second coil member and the magnetic field generated in the magnet. And a camera shake correction device. The method of claim 1,
The vertical length of the magnet is longer than the vertical length of the first coil member,
The vertical length of the first pole is longer than the vertical distance of the insertion hole for the camera auto focus and camera shake correction device. 3. The method according to claim 1 or 2,
The first blade is formed in a rectangular shape,
The second blade is formed in an octagonal pillar shape,
The first coil member is composed of four mounted on each outer surface of the first blade,
The first coil members disposed in mutually opposite directions are electrically connected to each other and receive magnetic force in the same direction by the magnet when the power is applied. 3. The method according to claim 1 or 2,
One end is mounted to the first blade and the other end is mounted to the second blade further comprises a support spring for supporting the second blade upwards,
And the support spring is elastically deformed when power is applied to the second coil member so that the second blade moves up and down. delete A housing opened up and down;
A first blade mounted horizontally in the housing;
A first coil member mounted to the outside of the first blade;
A second blade mounted inside the lens and mounted upside down in the first blade;
A second coil member wound around a central axis of the second blade and mounted to the outside of the second blade;
A support spring having one end mounted on the first blade and the other end mounted on the second blade to support the second blade upward;
A magnet mounted to an inner side of the housing and disposed outside the first blade;
A wire spring having an upper end mounted on the housing and the other end mounted on the first blade to support the first blade;
A controller for applying power to the first coil member and the second coil member;
Is disposed in the lower portion of the second blade is made of an image sensor for imaging the image of the subject passing through the lens,
The first coil member is wound around an axis perpendicular to the central axis around which the second coil member is wound,
The magnet,
A first pole portion polarized toward the second coil member;
A second pole portion formed on the upper and lower portions of the first pole portion and polarized in the opposite direction from the first pole portion to form a magnetic field around the first coil member and the second coil member,
The first blade moves horizontally with the second blade by the interaction of the first electromagnetic field generated when the power is applied to the first coil member and the magnetic field generated by the magnet,
The second blade is moved up and down inside the first blade by the interaction between the second electromagnetic field generated when the power is applied to the second coil member and the magnetic field generated by the magnet,
The housing is formed in the shape of a cube,
The wire spring is a compact camera equipped with an auto focus and image stabilization device, characterized in that it consists of eight arranged in a diagonal direction of each two inside the corner of the housing. The method according to claim 6,
The first blade is formed in a rectangular shape, the mounting groove is formed is inserted into the wire spring is formed,
The lower portion of the first blade, the protrusion is formed to protrude outward, the inner plate is formed inward,
The protrusions are formed at each corner of the first blade,
The mounting groove,
A first mounting groove formed on the protrusion;
It is made of a second mounting groove formed in the inner plate,
The wire spring is,
An outer wire spring having an upper end fixedly mounted to the housing and a lower end inserted into the first mounting groove;
A small camera equipped with an autofocus and image stabilization device, characterized in that the upper end is fixedly mounted to the housing and the lower end is formed of an inner wire spring inserted into the second mounting groove. The method according to claim 6,
The wire spring is connected to the first coil member and the second coil member, respectively, and supplies power to the first coil member and the second coil member by the control unit.
The first coil member is composed of four mounted on each outer surface of the first blade,
The first coil members disposed in mutually opposite directions are electrically connected to each other so that the first blade and the second blade are horizontally moved while being elastically deformed by receiving the magnetic force in the same direction by the magnet when the power is applied. Compact camera with autofocus and image stabilization. 8. The method of claim 7,
Lifting grooves which are vertically penetrated are formed in the inner plate formed in the first blade,
The lifting protrusions inserted into the lifting grooves are formed to protrude from the lower portion of the second blade.
One end of the support spring is fixedly mounted to the lower portion of the first blade, the other end is fixedly mounted to the lifting projection,
When the power is applied to the second coil member, the second blade is a small camera equipped with an auto focus and image stabilization device, characterized in that the horizontal movement is prevented to move up and down. The method according to claim 6,
The housing includes:
A spacer disposed on the first blade and the second blade and fixedly mounted to the wire spring;
A hub disposed below the first blade and the second blade;
Consists of a case covering the spacer and the first blade and the second blade,
The upper fixing protrusions spaced apart from each other are formed to protrude from the lower portion of the spacer, the upper portion of the magnet is inserted between the upper fixing protrusions,
A small camera equipped with an auto focus and image stabilization device, characterized in that the lower fixing projections are formed to be spaced apart from each other in the upper portion of the hub, the lower portion of the magnet is inserted between the lower fixing projections.

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