KR102258454B1 - A reflect module - Google Patents

Abstract

The present invention relates to a base forming a seating surface, a circuit board coupled to the seating surface, a coil unit coupled to the circuit board, a reflective member positioned opposite to the seating surface, a reflective member, and coupled to the coil unit and facing the coil unit. A position magnet that generates a driving force to move the reflective member by the interaction of, a part is coupled to the base, the other part is coupled to an elastic body and a circuit board coupled to at least one of the reflective member and the position magnet, and the movement of the position magnet is controlled. It provides a reflective module including a sensor unit to detect.

Description

A reflect module

The present invention relates to a reflection module, and more particularly, to a reflection module supporting a tilting structure.

Recently, cameras are basically employed in portable electronic devices such as smartphones, tablet PCs, and notebook computers, and an auto focus function, a camera shake correction function, and a zoom function are added to cameras for mobile terminals.

In order to implement various functions, the structure of the camera module is complicated and the size of the camera module is increased, so that it is difficult to mount the camera module on a portable electronic device.

In addition, when the lens or image sensor is directly moved for camera shake correction, it is necessary to consider both the weight of the lens or image sensor itself, and the weight of other floating bodies to which the lens or image sensor is attached, so a certain level of driving force is required. , There was a problem that the power consumption became severe.

(Patent Document 1) KR10-1892857 B1

(Patent Document 2) KR10-1942743 B1

The problem to be solved by the present invention is to provide a reflective module that connects a base and a reflective part with a ball inserted in the center of the base, and tilts the reflective part through electromagnetic force caused by the interaction of the position magnet and the coil part.

The reflective module of the present invention for solving the above problem includes: a base forming a seating surface, a circuit board coupled to the seating surface, and a coil unit coupled to the circuit board;

A reflective member positioned to face the seating surface, a position magnet coupled to the reflective member and configured to generate a driving force to move the reflective member by interacting with the coil unit to face the coil unit, and a part of the base is attached to the base. It is coupled, the other part may include an elastic body coupled to at least one of the reflective member and the position magnet, and a sensor unit coupled to the circuit board and sensing movement of the position magnet.

In an embodiment of the present invention, the elastic body may include an outer portion forming the part, an inner portion forming the other portion, and a connection portion connecting the outer portion and the inner portion.

In one embodiment of the present invention, the connection portion may be formed in a form bent at least once.

In an embodiment of the present invention, the coil unit may be coupled to one surface of the circuit board, and the sensor unit may be coupled to the other surface of the circuit board.

In one embodiment of the present invention, the coil part may form a hollow part surrounded by a conducting wire, and the sensor part may be coupled to a surface opposite to the part of the circuit board in which the hollow part is formed.

In one embodiment of the present invention, a sensor unit receiving groove for accommodating the sensor unit is formed on the seating surface, and the sensor unit may be located inside the sensor unit receiving groove.

In an embodiment of the present invention, a ball positioned between the seating surface and the reflective member may be further included.

In one embodiment of the present invention, the ball may support the central portion of the reflective member.

In one embodiment of the present invention, the base includes a ball support portion formed to protrude or depress from the seating surface, and the ball may be seated on the ball support portion.

In one embodiment of the present invention, an opening through which the ball support is inserted may be formed in a central portion of the circuit board.

In one embodiment of the present invention, a seating groove formed by being recessed is formed on the seating surface, and the circuit board may be coupled to the seating groove.

In one embodiment of the present invention, the circuit board may include an extension portion extending from a portion coupled to the seating surface.

In one embodiment of the present invention, the base may include a path groove formed between the seating surface and a surface adjacent to the seating surface, and the extension portion may extend along the path groove.

In one embodiment of the present invention, it may further include a gyro sensor coupled to the extension.

In an embodiment of the present invention, the coil unit includes a plurality of coils, the coil is formed to be elongated in one direction, and at least two of the plurality of coils may be disposed orthogonally.

In an embodiment of the present invention, the plurality of coils may be arranged to form a square.

In an embodiment of the present invention, at least two of the sensor units may be coupled to face different coils.

In one embodiment of the present invention, the coil unit may include a substrate unit and a coil pattern unit coupled to the substrate unit and wound at least one turn.

In one embodiment of the present invention, the coil pattern part may be printed on one surface of the substrate part.

In one embodiment of the present invention, the coil pattern part includes one coil pattern part formed on one surface of the substrate part and the other coil pattern part formed on the other surface of the substrate part, and the one coil pattern part and the other coil pattern part are Can be electrically connected.

In one embodiment of the present invention, the substrate portion may be formed in a form in which a plurality of the substrate portions are stacked, and the coil pattern portions respectively formed on the plurality of substrate portions may be electrically connected to each other.

In one embodiment of the present invention, the positioning magnet may be formed in a rectangular shape through which a central portion is penetrated.

In one embodiment of the present invention, a surface facing the seating surface of the positioning magnet may be magnetized as one pole, and a surface facing the reflective member may be magnetized as another electrode.

In one embodiment of the present invention, the reflective member may be formed as a mirror.

In another embodiment of the present invention, the reflective member may be formed of a prism.

In another embodiment of the present invention, the base includes a receiving groove for receiving the prism, and at least a part of the reflective member may be accommodated in the receiving groove.

The reflection module according to an embodiment of the present invention may connect the base and the reflection part with a ball inserted in the center of the base, and tilt the reflection part through electromagnetic force caused by the interaction of the position magnet and the coil part.

In particular, the reflection module according to an embodiment of the present invention may tilt the reflection part by 1 degree in any direction.

1 is a perspective view from one direction showing a reflective module and a camera module including the same according to an embodiment of the present invention.
2 is an exploded perspective view of FIG. 1.
3A is a front view showing in detail the coil shape of the coil part of FIG. 2.
3B is a rear view showing sensor units mounted perpendicular to each other on the rear surface of the coil unit of FIG. 2.
4 is a bottom perspective view of a coil unit according to an embodiment of the present invention.
5 is an exploded perspective view of a coil sheet of a reflective module according to an embodiment of the present invention.
6 is a cross-sectional view of a coil sheet of a reflective module according to an embodiment of the present invention.
7 is a cross-sectional view schematically showing a cross section of a coil portion of a reflective module according to an embodiment of the present invention.
8A is a side view in one direction showing a reflective module according to an embodiment of the present invention.
FIG. 8B is a view of a reflective module according to an embodiment of the present invention as viewed in parallel with a reflective member.
9 is a perspective view illustrating a base and a reflective member of a reflective module according to another embodiment of the present invention, in one direction.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that adding a detailed description of a technology or configuration already known in the relevant field may obscure the subject matter of the present invention, some of these will be omitted from the detailed description. In addition, terms used in the present specification are terms used to properly express embodiments of the present invention, which may vary according to related people or customs in the field. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

The terminology used herein is for reference only to specific embodiments and is not intended to limit the present invention. Singular forms as used herein also include plural forms unless the phrases clearly indicate the opposite. The meaning of'comprising' as used in the specification specifies a specific characteristic, region, integer, step, action, element and/or component, and other specific characteristic, region, integer, step, action, element, component and/or group It does not exclude the existence or addition of

Hereinafter, a reflective module according to an embodiment of the present invention will be described with reference to the accompanying FIGS. 1 and 2, but a camera module including the reflective module will be described first.

1 is a perspective view from one direction showing a reflective module and a camera module including the same according to an embodiment of the present invention. 2 is an exploded perspective view of FIG. 1.

1 and 2, the camera module includes a housing 10, a first circuit board 20, and an AF module 30.

The housing 10 includes a receiving portion 11 and a receiving portion cover 12.

Both sides and upper sides of the receiving part 11 are open based on FIG. 2, and sides facing each other are connected to each other. Any one of the side surfaces may have a coupling groove recessed inward.

In addition, an inclined structure is formed inside the receiving part 11 to come into contact with the base 100. In addition, two through holes may be formed on the lower surface of the receiving portion 11.

The receiving portion 11 is surrounded by the receiving portion cover 12.

The receiving portion cover 12 has a structure covering the upper and side portions of the receiving portion 11. In addition, an opening 12a may be formed on an upper surface of the receiving part cover 12 facing the lower surface of the receiving part 11 so that light is incident.

The first circuit board 20 is coupled to the accommodating portion 11 while surrounding any one of the open sides of the accommodating portion 11. In this case, the first circuit board 20 may be a flexible printed circuit board (FPCB), but is not limited thereto.

The AF module 30 includes a carrier 31, a lens unit 32, a transfer ball 33, a second circuit board 34, a hall sensor unit 35, a coil 36, an AF magnet 37, and a yoke. It includes (38).

The carrier 31 may accommodate the lens unit 32 because the upper and opposite sides are open. In addition, four fixing holes are formed under the carrier 31. Specifically, the fixing hole is formed horizontally and vertically smaller than the diameter of the four transfer balls (33). Accordingly, at least a part of the four transfer balls 33 is inserted into the fixing hole from the outside.

The lens unit 32 is a module generally applied to a camera module, and is mounted inside the carrier 31. The lens unit 32 may include a lens exposed to the outside. A lens is an object that finely grinds the surface of a transparent material such as glass into a spherical surface and collects or radiates light from the object to form an optical image. The lens unit 32 may be disposed so that the lenses face both open sides of the carrier 31.

The transfer ball 33 is at least partially inserted into the four fixing holes of the carrier 31 from the outside. This transfer ball 33 supports the carrier 31 to perform linear reciprocating motion, and a detailed description will be described later.

Like the first circuit board 20, the second circuit board 34 may be a flexible printed circuit board (FPCB), but is not limited thereto. The second circuit board 34 may be coupled to the recessed coupling groove of the receiving portion 11.

In addition, two Hall sensor units 35 are mounted on one surface of the second circuit board 34.

The Hall sensor unit 35 is a Hall sensor that uses a Hall effect and is widely used to measure the position of a camshaft. The Hall sensor unit 35 detects the direction and magnitude of the magnetic field by using the Hall effect in which a voltage is generated in a direction perpendicular to the current and the magnetic field when a magnetic field is applied to a conductor through which a current flows. For this purpose, two Hall sensor units 35 are mounted on one surface of the second circuit board 34 to sense the direction and magnitude of the magnetic field generated from the coil.

The coil 36 is positioned on the second circuit board 34. Further, the coil 36 is composed of two and is mounted on the second circuit board 34. The coil 36 is electrically connected to the second circuit board 34 to form an electromagnetic field when current flows to interact with the AF magnet 37.

The AF magnet 37 is located above the coil 36. In addition, two AF magnets 37 may be formed corresponding to the coil 36. The AF magnet 37 generates an electromagnetic force due to the interaction with the coil 36 so that the carrier 31 and the lens 32 can linearly reciprocate.

The yoke 38 is located under the second circuit board 34 and may interact with the coil 36 and the AF magnet 37.

Hereinafter, a reflection module according to an embodiment of the present invention will be described with reference to FIG. 2.

The reflective module according to an embodiment of the present invention includes a base 100, a coil part 200, a circuit board part 300, a reflective part 400, a position magnet 500, an elastic body 600, and a sensor part 700. ), a ball 800 and a gyro sensor 900.

The base 100 may have a tetrahedral shape. The base 100 includes a seating surface 110, a path groove 120, a ball support 130, a seating groove 140, and a sensor receiving groove 150.

The seating surface 110 corresponds to an inclined surface of the base 100. Specifically, the seating surface 110 is a surface facing an edge formed by a surface perpendicular to each other. A path groove 120 is formed between any one of the surfaces perpendicular to each other and the seating surface 110.

The path groove 120 is formed between the seating surface 110 and the seating surface 110 and an adjacent surface. The circuit board part 300 is located in the path groove 120.

In addition, the base 100 is formed with a ball support 130 formed in a protruding or recessed form from the seating surface 110. In particular, it is preferable that the ball support 130 is formed in the center of the seating surface 110 of the base 100. The arrangement of the ball support part 130 supports the reflective part 400 to be tilted by electromagnetic force without being biased in any direction.

On the other hand, a seating groove 140 formed by being recessed is formed in the seating surface 110. Specifically, the center portion of the seating surface 110 is formed to be recessed so that the circuit board portion 300 is inserted. The circuit board part 300 is coupled to the seating groove 140.

One surface of the circuit board portion 300 inserted and coupled to the center portion of the seating surface 110 may be parallel to the seating surface 110.

In addition, a sensor unit receiving groove 150 for accommodating the sensor unit 700 is formed on the seating surface 110.

The sensor unit receiving groove 150 is formed to be recessed in the base 100 adjacent to the seating surface 110. Referring to (b) of FIG. 3, a sensor unit receiving groove 150 may be formed where the sensor unit 700 is located.

3A is a front view showing in detail the coil shape of the coil part of FIG. 2. 3B is a rear view showing sensor units mounted perpendicular to each other on the rear surface of the coil unit of FIG. 2. 4 is a bottom perspective view of a coil unit according to an embodiment of the present invention.

The coil unit 200 includes a plurality of coils. The coil part 200 forms a hollow part 221 surrounded by a conductive wire. The coil unit 200 includes a coil 210, an insulating substrate 220, and first, second, third, and fourth coil sheets 230, 240, 250, and 260.

In addition, the coil unit 200 includes a substrate unit 202 and a winding coil unit 203.

The substrate portion 202 forms the base of the coil portion 200. The substrate portion 202 forms an opening 201 penetrating vertically. The opening 201 may function as a lens insertion hole through which the lens unit is inserted and coupled. Although not shown in the drawing, the outer circumferential surface of the lens unit on which the lens is mounted may be inserted into the opening 201 of the substrate unit 202 to be coupled.

The above-described substrate portion 202 is formed in a form in which a plurality of substrates 202 are stacked.

The winding coil part 203 is coupled to the substrate part 202. It is formed in the form of winding a plurality of times while surrounding the opening 201 of the substrate portion 202 of the winding coil portion 203. The winding coil part 203 may be formed to be densely formed on the substrate part 202. For example, as shown in FIG. 4, the winding coil portion 203 may be formed to be densely located on the outer edge portion of the substrate portion 202.

Both ends of the winding coil unit 203 are composed of signal terminals 204 and 205. The signal terminals 204 and 205 are formed to be exposed to the outside of the coil unit.

A more detailed configuration of the winding coil unit 203 and the signal terminals 204 and 205 will be described below with reference to FIGS. 5 to 7.

The coil 210 is formed to be elongated in one direction. More specifically, referring to FIG. 3A, the coil 210 may have a shape in which parallel lines facing each other and the parallel lines are connected in a semicircle, such as a race track.

The coil 210 in the present invention may have a plurality of coils 211, 212, 213, 214, and at least two of the plurality of coils 211, 212, 213, 214 (211, 212, 213 and 214) are arranged orthogonally. In addition, the plurality of coils 211, 212, 213, and 214 are arranged to form a square.

In addition, the coil 210 may be patterned on one surface of the insulating substrate 220.

The coil 210 includes a first coil 211, a second coil 212, a third coil 213 and a fourth coil 214.

The first coil 211 is the longest coil and is formed on one surface of the insulating substrate 220. Specifically, the first coil 211 is positioned under one surface of the insulating substrate 220 as shown in FIG. 3A.

The second coil 212 is the shortest coil and is positioned on one surface of the insulating substrate 220.

The third and fourth coils 213 and 214 are formed shorter than the first coil 211 and longer than the second coil 212. These third and fourth coils 213 and 214 are positioned between the first and second coils 211 and 212 and are positioned on both sides of one surface of the insulating substrate 220.

The insulating substrate 220 is where the coil 210 is patterned, and is electrically connected to the circuit board portion 300. The insulating substrate 220 has a hollow portion 221 surrounded by a conductive wire and the insulating substrate 220.

The coil unit 200 includes at least one coil sheet. Specifically, the coil unit 200 may be formed in a form in which a plurality of coil sheets are stacked.

5 is an exploded perspective view of a coil sheet of a lens driving apparatus according to an embodiment of the present invention. 6 is a cross-sectional view of a coil sheet of a lens driving apparatus according to an embodiment of the present invention.

The configuration of one coil sheet 230 will be described with reference to FIGS. 5 and 6. As described below, the coil sheet may be divided into an upper coil sheet 230, a lower coil sheet 260, and an intermediate coil sheet 240 and 250. In addition, some of the coil sheets 230, 240, 250, and 260 may have different configurations, but the main configurations are the same. Accordingly, the configuration of the coil sheet will be described below based on the upper coil sheet 230.

The coil sheet 230 includes a substrate layer 232 and coil pattern portions 233 formed on upper and lower surfaces of the substrate layer 232.

The substrate layer 232 is formed of an insulating material. The substrate layer 232 may be formed of a flexible film material. Specifically, the substrate layer 232 may be formed of a resin material such as polyimide. The substrate layer 232 forms an opening 231 penetrating vertically. The opening 231 of the substrate layer 232 is also aligned with the opening 111 of the base 100.

The coil pattern portion 233 includes one coil pattern portion 234 formed on one surface of the substrate portion 202 and the other coil pattern portion 236 formed on the other surface of the substrate portion 202. One coil pattern part 234 is formed on the upper surface of the substrate layer 232, and the other coil pattern part 236 is formed on the lower surface of the substrate layer 232. The one side coil pattern part 234 and the other side coil pattern part 236 are electrically connected to each other.

The coil pattern part 233 is coupled to the substrate part 202 and wound at least one turn, and is formed in a form that is wound a plurality of times. Specifically, the coil pattern portion 233 is formed in a spiral shape to surround the opening 231 of the substrate layer 232. The coil pattern portion 233 is printed on one surface of the substrate portion 202, and the coil pattern portions 233 formed on the plurality of substrate portions 202 are electrically connected to each other.

The coil pattern part 233 includes one end (234a, 236a), the other ends (234c, 236c) and winding parts (234b, 236b) wound a plurality of times while connecting one end and the other end at the top or bottom of the substrate layer 232 do. One end (234a, 236a) and the other end (234c, 236c) of the inner end and the winding part (234b, 236b) located inside the winding part (234b, 236b) according to the position relative to the winding part (234b, 236b). It can be any one of each of the outer ends located outside.

The one side coil pattern part 234 and the other side coil pattern part 236 may be roughly formed to face each other with the substrate layer 232 therebetween. In particular, it is preferable that the inner ends or outer ends of the one side coil pattern part 234 and the other side coil pattern part 236 face each other with the substrate layer 232 interposed therebetween.

One coil pattern part 234 and the other coil pattern part 236 may be electrically connected to each other. Specifically, one coil pattern part 234 and the other coil pattern part 236 may be electrically connected by a via hole 235 penetrating through the substrate layer 232. The via hole 235 penetrates the substrate layer 232 in the vertical direction and is formed to be conductive. The via hole 235 preferably penetrates the substrate layer 232 in a vertical direction, but in some cases, the via hole 235 may be formed to be oblique or bent inside the substrate layer 232.

The via hole 235 may connect the inner ends or outer ends of the one side coil pattern part 234 and the other side coil pattern part 236. In this specification, a description will be made by referring to that the other end 234c of the one side coil pattern part 234 and one end 236a of the other side coil pattern part 236 are connected. Therefore, it is preferable that the other end 234c of the one side coil pattern part 234 and one end 236a of the other side coil pattern part 236 are both inner ends or both are outer ends. For reference, in the accompanying drawings, the other end 234c of the one side coil pattern part 234 and one end 236a of the other side coil pattern part 236 are shown to be both outer ends.

One coil pattern part 234 and the other coil pattern part 236 are wound in the same direction. Specifically, if the one side coil pattern part 234 is wound in a clockwise direction based on when looking downward from the top while proceeding to one end 234a, the winding part 234b, and the other end 234c, the other side coil pattern part 236 is also wound in a clockwise direction based on the same reference while proceeding to one end 236a, the winding portion 236b, and the other end 236c. Of course, the opposite direction is also possible.

In this way, when one coil pattern part 234 and the other coil pattern part 236 are electrically connected to each other, one coil sheet 230 has one coil pattern part 233 that is electrically wound a plurality of times. For example, when one side coil pattern part 234 is formed in a form in which 5 turns and the other side coil pattern part 236 is formed in a form in which 5 times are wound, one coil pattern part 234 and the other coil pattern part The coil pattern portions 233 may be electrically connected to each other to form a coil pattern portion 233 that is electrically wound 10 times.

Although not shown in FIG. 5, the coil sheet 230 further includes insulating coating layers 234d and 236d covering the coil pattern portion 233. The insulating coating layers 234d and 236d are formed on the upper and lower surfaces of the coil sheet 230 to cover at least a portion of one coil pattern part 234 and the other coil pattern part 236. This will be described in more detail below.

The coil pattern portion 233 may be formed such that the winding portions 234b and 236b wound a plurality of times on one surface of the substrate layer 232 are densely formed. For example, as illustrated in FIG. 5, the winding portions 234b and 236b may be formed to be densely formed on an outer edge portion on one surface of the substrate layer 232. Referring to FIG. 5, the winding portions 234b and 236b are shown to be wound five times, and the winding portions 234b and 236b wound five times are positioned adjacent to each other.

6 is a cross-sectional view of a portion of one coil sheet 230.

The winding portions 234b and 236b are formed in a form in which adjacent winding portions are spaced apart from each other. Here, the adjacent winding portions 234b and 236b may be formed to be spaced apart at a predetermined interval (a). Referring to the example illustrated in FIG. 6, adjacent winding portions 234b and 236b may be formed at intervals of 30 μm from each other. More specifically. The winding portions 234b and 236b may have a width of 25 μm and may be formed to be located 5 μm apart from an adjacent winding portion.

The coil pattern part 233 may be formed to have a predetermined thickness h. Referring to, for example, what is illustrated in FIG. 4, the coil pattern portion 233 may be formed to a thickness of 30 μm to 80 μm. Electrical resistance of the coil pattern part 233 may be adjusted by adjusting the thickness of the coil pattern part 233. Specifically, the electrical resistance of the coil pattern part 233 may be reduced by increasing the thickness of the coil pattern part 233.

As shown in FIG. 6, the insulating coating layers 234d and 236d are formed on the upper and lower surfaces of the coil sheet 230 to cover at least a portion of one coil pattern part 234 and the other coil pattern part 236. The insulating coating layers 234d and 236d are formed of a non-conductive material to prevent an unintended short circuit of the coil pattern portion 233.

However, the connection terminals electrically connected to the coil pattern portions of other coil sheets adjacent to the upper or lower portion of the coil sheet 230 are exposed to the outside without being covered by the insulating coating layers 234d and 236d. Further, the signal terminals 204 and 205 to which signals are applied to the winding coil part 203 are also exposed to the outside without being covered by the insulating coating layers 234d and 236d. This will be described in more detail with reference to FIGS. 7 and 8 below.

7 is a cross-sectional view schematically showing a cross section of a coil portion of a lens driving apparatus according to an embodiment of the present invention.

Referring to FIG. 7, the coil unit 200 is configured by stacking a plurality of coil sheets 230, 240, 250, and 260.

In the stacked coil sheets 230, 240, 250, 260, coil pattern portions of each coil sheet are electrically connected to each other. The coil pattern portion of the plurality of coil sheets 230, 240, 250, 260 electrically connected in this way constitutes the winding coil portion 203 of the coil portion 200.

The coil pattern portion of the coil sheet is electrically connected to the coil pattern portion of another coil sheet adjacent to the upper and lower sides. For convenience of explanation, first, two coil sheets are adjacent to each other in the vertical direction. Here, the coil sheet located at the upper part is referred to as a first coil sheet, and the coil sheet located at the lower part is referred to as the second coil sheet.

In addition, referring to FIG. 7, the first coil sheet 230 is an upper coil sheet 230, and the second coil sheet 240 is a coil sheet 240 adjacent to the upper coil sheet 230. ), and explain.

The other side coil pattern part 236 of the first coil sheet 230 is electrically connected to one side coil pattern part 244 of the second coil sheet 240. Specifically, the other end 236c of the other side coil pattern part 236 of the first coil sheet 230 and one end 244a of the one side coil pattern part 244 of the second coil sheet 240 are electrically connected. . The other end 236c of the other side coil pattern part 236 of the first coil sheet 230 and one end 244a of the one side coil pattern part 244 of the second coil sheet 240 are on the insulating coating layers 236d and 244d. It is formed to be exposed to the outside without being covered. In addition, the other end 236c of the other side coil pattern part 236 of the first coil sheet 230 and the one end 244a of the one side coil pattern part 244 of the second coil sheet 240 are positioned to face each other. The other end 236c of the other side coil pattern part 236 of the first coil sheet 230 and one end 244a of the one side coil pattern part 244 of the second coil sheet 240 are both inner ends or outer ends. desirable. In FIG. 7, the other end 236c of the other side coil pattern part 236 of the first coil sheet 230 and the one end 244a of the one side coil pattern part 244 of the second coil sheet 240 are both inner ends. Shown. The other end 236c of the other side coil pattern part 236 of the first coil sheet 230 and one end 244a of the one side coil pattern part 244 of the second coil sheet 240 may be directly contacted and electrically connected. In some cases, it may be electrically connected with a solder or other conductive medium therebetween.

The coil pattern portion 233 of the first coil sheet 230 and the coil pattern portion 243 of the second coil sheet 240 are wound in the same direction. Specifically, the other side coil pattern portion 236 of the first coil sheet 230 proceeds to one end 236a, the winding portion 236b, and the other end 236c in a clockwise direction when viewed from the top downward. If it is wound, one side of the coil pattern portion 244 of the second coil sheet 240 is also wound in a clockwise direction based on the same reference while proceeding to one end 244a, a winding portion 244b, and the other end 244c. Of course, the opposite direction is also possible.

When the other coil pattern portion 236 of the first coil sheet 230 and the coil pattern portion 244 of the second coil sheet 240 are electrically connected, the coil pattern portion of the first coil sheet 230 The coil pattern portion 233 of the 233 and the second coil sheet 240 functions as a single coil pattern portion 233 that is electrically wound a plurality of times.

If the coil part 200 has only the first and second coil sheets 230 and 240

Let's explain it assuming. The coil pattern part 233 of the first coil sheet 230 is formed in a form of winding 10 times by combining the top and the bottom, and the coil pattern part 243 of the second coil sheet 240 is winding 10 times by combining the top and the bottom. When formed in the form, the coil unit 200 has a winding coil unit 203 wound a total of 20 times.

Hereinafter, referring to FIG. 7 again, the coil unit 200 in which the plurality of coil sheets 230 are stacked will be described in more detail.

As described above, the coil unit 200 is configured by stacking a plurality of coil sheets 230, 240, 250, and 260. The coil pattern portions of each of the coil sheets 230, 240, 250, 260 are electrically connected to each other. The coil pattern portion of the plurality of coil sheets electrically connected in this way constitutes the winding coil portion 203 of the coil portion 200.

The winding coil part 203 is electrically wound in one direction. In addition, the winding coil unit 203 includes signal terminals 204 and 205 to which an electrical signal is applied from the outside. Two signal terminals 204 and 205 electrically connected to both ends of the winding coil unit 203 are formed.

The two signal terminals 204 and 205 may be formed on an upper surface and a lower surface of the coil unit 200, respectively, but may be formed on either the upper surface or the lower surface of the coil unit 200. Hereinafter, with reference to FIGS. 7 and 8, it will be described that both signal terminals 204 and 205 are formed on the lower surface of the coil unit 200.

The coil sheet 230 includes an upper coil sheet 230 located on the uppermost layer, a lower coil sheet 260 located on the lowermost layer, and an intermediate coil sheet 240 located between the upper coil sheet 230 and the lower coil sheet 260. , 250).

Referring to FIG. 7, the coil unit 200 including the four coil sheets 230, 240, 250, and 260 will be described as an example. The coil unit 200 includes an upper coil sheet 230, a first intermediate coil sheet 240, a second intermediate coil sheet 250, and a lower coil sheet 260.

Referring to FIG. 7 to describe in more detail the winding coil portion 203 of the coil portion 200, the winding coil portion 203 is connected to the coil pattern portions of the respective coil sheets 230, 240, 250, 260. Is formed.

Specifically, the other end 236c of the other coil pattern portion of the upper coil sheet 230 and one end 244a of the coil pattern portion of the first intermediate coil sheet 240 are electrically connected. In addition, the other end 246c of the other coil pattern portion of the first intermediate coil sheet 240 and one end 254a of the coil pattern portion of the second intermediate coil sheet 250 are electrically connected. In addition, the other end 256c of the other coil pattern portion of the second intermediate coil sheet 250 and one end 264a of the coil pattern portion 264 of the lower coil sheet are electrically connected.

In the winding coil part 203 connected in this way, one end 234a of the coil pattern part on one side of the upper coil sheet 230 corresponds to one end of the winding coil part 203. In addition, the other end 266c of the other coil pattern part of the lower coil sheet 260 corresponds to the other end of the winding coil part 203.

One end 234a of the coil pattern portion of the upper coil sheet 230 is from the upper surface of the upper coil sheet 230 to the lower surface of the lower coil sheet 260 through a connection via hole 206 penetrating the entire coil part 200. Can be electrically connected. A connection signal terminal 205 electrically connected to one end 234a of the coil pattern portion on one side of the upper coil sheet 230 through the connection via hole 206 is formed on the lower surface of the lower coil sheet 260. The connection signal terminal 205 functions as a second signal terminal 205 that is exposed to the outside from the lower surface of the lower coil sheet 260 to receive an electrical signal from the outside.

The other end 236c of the coil pattern portion on the other side of the lower coil sheet 260 is exposed to the outside from the lower surface of the lower coil sheet 260 and functions as a first signal terminal 204 to receive an electrical signal from the outside.

The connection via hole 206 may pass through the entire coil unit 200. Specifically, the connection via hole 206 may be a connection between via holes 206a, 206b, 206c, and 206d formed in each of the coil sheets 230, 240, 250, and 260. 6, the connection via hole 206 is formed in the via hole 206a formed in the upper coil sheet 230, the via hole 206b formed in the first intermediate coil sheet 240, and the second intermediate coil sheet 250. It extends from the upper surface of the upper coil sheet 230 to the lower surface of the lower coil sheet 260 through the via hole 206c and the via hole 206d formed in the lower coil sheet 260.

As a result, through this configuration, two signal terminals 204 and 205 are formed on the lower surface of the coil unit 200. However, in some cases, it is also possible to form two signal terminals 204 and 205 on the upper surface of the coil unit 200.

The signal terminals 204 and 205 of the coil unit 200 may be connected to a spring 400 formed of a conductive material to receive a signal from the outside. When one signal terminal 204 and 205 is formed on the upper surface of the coil unit 200 and one on the lower surface of the coil unit 200, each signal terminal is connected to the upper spring 410 and the lower spring 420 to apply a signal from the outside. I can receive it. However, when two signal terminals 204 and 205 are formed on one of the upper and lower surfaces of the coil unit 200, they are connected to any one of the upper spring 410 and the lower spring 420 to transmit signals from the outside. Can be licensed

8A is a side view in one direction showing a reflective module according to an embodiment of the present invention. FIG. 8B is a view of a reflective module according to an embodiment of the present invention as viewed in parallel with a reflective member.

The circuit board part 300 includes a circuit board 310, an extension part 320, and an opening 330.

The circuit board 310 is coupled to the seating surface 110. Specifically, the circuit board 310 is inserted into and coupled to the seating groove 140 formed in the central portion of the seating surface 110. The coil unit 210 is coupled to one surface of the circuit board 310.

In addition, an opening 330 into which the ball support 130 is inserted is formed through the central portion of the circuit board 310.

Furthermore, an extension part 320 is formed at one end of the circuit board 310.

The extension part 320 extends from a portion coupled to the seating surface 110. Specifically, the extension part 320 extends along the open path groove 120.

The reflective part 400 includes a reflective member 410 and a reflective member accommodating part 420.

The reflective member 410 is positioned to face the seating surface 110. That is, the reflective member 410 is positioned parallel to the seating surface 110 inclined with respect to the lower surface of the base 100.

The unique reflective member 410 is coupled to the reflective member accommodating portion 420.

The reflective member accommodating portion 420 has a shape of a plate member accommodating the reflective member 410. One surface of the reflective member receiving portion 420 is formed to be recessed so that the reflective member 410 can be inserted and seated.

A central groove into which at least a portion of the ball 800 is inserted may be formed in the center of the other surface of the reflective member receiving portion 420. Accordingly, the reflective member receiving portion 420 is positioned in contact with the ball 800.

In addition, four stoppers 421 are protruding from the other surface of the reflective member accommodating portion 420. The stopper 421 prevents the reflective part 400 from tilting any more when the reflective part 400 is tilted with respect to the plane of the reflective member 410 and comes into contact with the seating surface 110.

The positioning magnet 500 is positioned between the coil part 200 and the reflective part 400. The positioning magnet 500 is coupled to the reflective member 410. The positioning magnet 500 is formed in a square shape through which a central portion is penetrated.

Specifically, in the positioning magnet 500, the surface facing the seating surface 110 is magnetized as one pole, and the surface facing the reflective member 410 is magnetized as the other electrode.

In an embodiment of the present invention, the reflective member 410 is formed as a mirror. The position magnet 500 faces the coil unit 200 and generates a driving force to move the reflective member 410 by interaction with the coil unit 200.

Part of the elastic body 600 is coupled to the base 100, and another portion of the elastic body 600 is coupled to at least one of the reflective member 410 and the position magnet 500. This elastic body 600 includes an outer portion 610, an inner portion 620 and a connection portion 630.

The outer part 610 forms the part. Specifically, the outer portion 610 has a rectangular frame shape and constitutes the outermost portion of the elastic body 600.

The inner part 620 is located inside the outer part 610 and forms another part. Specifically, the inner part 620 has a rectangular frame shape and constitutes the innermost part of the elastic body 600. The inner part 620 for this purpose is formed smaller than the outer part 610.

In addition, an inner hole into which a stopper may be inserted may be formed in at least a part of the inner portion 620.

The connection part 630 connects the outer part 610 and the inner part 620. Specifically, the connection part 630 is formed to be bent at least once.

The sensor unit 700 is located inside the sensor unit receiving groove 150. At least two of the sensor units 700 are coupled to face different coils. Specifically, the sensor unit 700 is coupled to the opposite surface of the portion of the circuit board 310 where the hollow portion 221 is formed.

In addition, the sensor unit 700 is coupled to the other surface of the circuit board 310 to detect the movement of the position magnet 500. The sensor unit 700 includes a first sensor unit 710 and a second sensor unit 720.

Referring to FIGS. 3A and 3B, the first sensor unit 710 may be disposed parallel to the first coil 211.

The second sensor unit 720 may be disposed parallel to the third and fourth coils 213 and 214 and perpendicular to the first sensor unit 710.

The ball 800 is located between the seating surface 110 and the reflective member 410. Specifically, the ball 800 supports the central portion of the reflective member 410 so as to be seated on the ball support 130. Such a ball 800 supports the reflective part 400 to be easily tilted in any direction.

The gyro sensor 900 is coupled to the extension part 320. Such a gyro sensor 900 is a known technology and a detailed description thereof will be omitted.

Hereinafter, the operation of the reflective module according to an embodiment of the present invention will be described in detail.

8A and 8B, when a current is applied to the circuit board 300, the reflective unit 400 generates an electromagnetic force due to the interaction between the coil unit 200 and the position magnet 500. Thus, as the attractive force or repulsive force acts, it moves by 1 degree so as to be closer to or away from the seating surface 110.

In the present invention according to the above, it is possible to tilt the reflector 400 in any direction by 1 degree, and thus delicate control is possible.

Hereinafter, a reflection module according to another embodiment of the present invention will be described with reference to FIG. 9, but components different from the embodiment of the present invention will be described in detail.

9 is a perspective view illustrating a base and a reflective member of a reflective module according to another embodiment of the present invention, in one direction.

In the reflection module according to another embodiment of the present invention, the base 100 may have an empty receiving groove 160 as shown in FIG. 9.

In the receiving groove 160, a reflective member 410 having a tetrahedral shape may be inserted, and the reflective member 410 at this time is formed of a prism.

At least a portion of the reflective member 410 is accommodated in the receiving groove 160.

In the above, embodiments of the reflective module of the present invention have been described. The present invention is not limited to the above-described embodiments and the accompanying drawings, and various modifications and variations are possible from the viewpoint of those of ordinary skill in the field to which the present invention pertains. Therefore, the scope of the present invention should be defined by the claims of the present specification as well as those equivalents to the claims.

10: housing
11: Receptacle
12: receiving part cover
12a: opening
20: first circuit board
30: AF module
31: carrier
32: lens unit
33: transfer ball
34: second circuit board
35: Hall sensor
36: coil
37: AF magnet
38: York
100: base
110: seating surface
120: path home
130: ball support
140: seating groove
150: sensor unit receiving groove
160: receiving groove
200: coil part
210: coil
211: first coil
212: second coil
213: third coil
214: fourth coil
220: insulating substrate
221: hollow part
230: first coil sheet
232: substrate portion
233: coil pattern part
234: one side coil pattern part
236: the other side coil pattern part
240: second coil sheet
243: coil pattern portion
244: one side coil pattern part
246: the other side coil pattern part
250: third coil sheet
254: one side coil pattern part
256: the other side coil pattern part
260: fourth coil sheet
264: one side coil pattern part
266: the other side coil pattern part
300: circuit board portion
310: circuit board
320: extension
330: opening
400: reflector
410: reflective member
420: reflective member receiving portion
421: stopper
500: position magnet
600: elastic body
610: outer part
620: inner part
630: connection
700: sensor unit
710: first sensor unit
720: second sensor unit
800: ball
900: gyro sensor

Claims (26)

A base forming a seating surface;
A circuit board coupled to the seating surface;
A coil unit coupled to the circuit board;
A reflective member positioned to face the seating surface;
A position magnet coupled to the reflective member and facing the coil unit to generate a driving force to move the reflective member by interaction with the coil unit;
An elastic body partly coupled to the base and another partly coupled to at least one of the reflective member and the position magnet; And
A sensor unit coupled to the circuit board and sensing movement of the position magnet,
The base includes the seating surface and a path groove formed between the seating surface and an adjacent surface,
The circuit board is a reflective module including an extension portion extending from a portion coupled to the seating surface and extending along the path groove.
The method of claim 1,
The elastic body,
An outer portion forming the part;
An inner part located inside the outer part and forming another part of the outer part; And
A reflective module comprising a connection portion connecting the outer portion and the inner portion.
The method of claim 2,
The reflective module is formed in a form where the connection portion is bent at least once.
The method of claim 1,
The coil part is coupled to one surface of the circuit board,
The sensor unit is a reflective module coupled to the other surface of the circuit board.
The method of claim 4,
The coil part forms a hollow part surrounded by a conducting wire,
The sensor unit is a reflective module that is coupled to the opposite surface of the hollow portion of the circuit board.
The method of claim 4,
A sensor unit receiving groove for accommodating the sensor unit is formed on the seating surface,
The sensor unit is a reflective module located inside the sensor unit receiving groove.
The method of claim 1,
A reflective module further comprising a ball positioned between the seating surface and the reflective member.
The method of claim 7,
The ball is a reflective module supporting the central portion of the reflective member.
The method of claim 7,
The base includes a ball support formed in a form protruding or recessed from the seating surface,
The ball is a reflection module that is seated on the ball support.
The method of claim 9,
A reflective module in which an opening through which the ball support is inserted is formed in a central portion of the circuit board.
The method of claim 1,
The seating surface is formed with a seating groove that is formed by being recessed,
A reflection module to which the circuit board is coupled to the mounting groove.
delete delete The method of claim 1,
A reflection module further comprising a gyro sensor coupled to the extension.
The method of claim 1,
The coil unit includes a plurality of coils,
The coil is formed to be elongated in one direction,
At least two of the plurality of coils are orthogonally disposed.
The method of claim 15,
A reflection module in which the plurality of coils are arranged to form a square.
The method of claim 16,
A reflective module in which at least two of the sensor units are coupled to face different coils.
The method of claim 1,
The coil part,
A substrate portion; And
A reflective module comprising a coil pattern unit coupled to the substrate unit and wound at least one turn.
The method of claim 18,
The coil pattern part is a reflective module in a form printed on one surface of the substrate part.
The method of claim 18,
The coil pattern part,
One side coil pattern portion formed on one surface of the substrate portion; And
Including the other side coil pattern portion formed on the other surface of the substrate,
The reflective module of the one side coil pattern part and the other side coil pattern part are electrically connected to each other.
The method of claim 18,
The substrate portion is formed in a stacked form,
A reflective module that is electrically connected to each other by coil pattern portions respectively formed on the plurality of substrate portions.
The method of claim 1,
The location magnet is a reflective module formed in a square shape through which a central portion is penetrated.
The method of claim 1,
The positioning magnet is a reflective module in which a surface facing the seating surface is magnetized as one pole, and a surface opposite to the reflective member is magnetized as another pole.
The method of claim 1,
The reflective member is a reflective module formed of a mirror.
The method of claim 1,
The reflective member is a reflective module formed of a prism.
The method of claim 25,
The base includes a receiving groove for accommodating the prism,
A reflective module in which at least a part of the reflective member is accommodated in the receiving groove.

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