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KR-20260062835-A - Reflection module and camera module including the same

KR20260062835AKR 20260062835 AKR20260062835 AKR 20260062835AKR-20260062835-A

Abstract

A reflection module according to one embodiment of the present invention comprises: a housing; a guide member disposed relative to the housing with respect to a first rotation axis and rotatably arranged relative to the guide member with respect to a second rotation axis, and having a reflection member mounted thereon; a first pulling part disposed between the guide member and the holder; and a first magnetic part and a second magnetic part disposed spaced apart from each other in the direction of the first rotation axis with respect to the first pulling part; wherein the first magnetic part may include a first magnet disposed on the guide member, and the second magnetic part may include a second magnet disposed on the guide member.

Inventors

  • 권용환
  • 한재형
  • 윤영복
  • 임수철
  • 손상욱
  • 정원규

Assignees

  • 삼성전기주식회사

Dates

Publication Date
20260507
Application Date
20250930
Priority Date
20241029

Claims (20)

  1. Housing; A guide member disposed to be rotatable relative to the housing with respect to a first rotation axis; A holder mounted with a reflector member, positioned to be rotatable relative to the guide member with respect to a second rotation axis; A first pulling member disposed between the guide member and the holder; and It includes a first magnetic part and a second magnetic part spaced apart from each other in the direction of the first rotation axis with the first pulling part in between; The first magnetic part includes a first magnet disposed on the guide member, and The second magnetic part is a reflection module comprising a second magnet disposed on the guide member.
  2. In paragraph 1, The first pulling part comprises a first pulling magnet disposed in one of the guide member and the holder and a first pulling yoke disposed in the other. The first pulling magnet and the first pulling yoke are reflection modules facing each other in a direction perpendicular to both the first rotation axis and the second rotation axis.
  3. In paragraph 1, One surface of the first magnet and one surface of the second magnet exposed to the outside of the guide member are each reflection modules having one polarity.
  4. In paragraph 1, The first magnetic part further includes a third magnet disposed in the holder, The second magnetic part above is a reflection module including a fourth magnet disposed in the holder.
  5. In paragraph 4, The surfaces of the first magnet and the third magnet facing each other have the same polarity, The surfaces of the second magnet and the fourth magnet facing each other have the same polarity in the reflection module.
  6. In paragraph 4, The direction of action of the magnetic force of the first pulling part and the direction of action of the magnetic force of the first magnetic part are opposite to each other, A reflection module in which the direction of action of the magnetic force of the first pulling part and the direction of action of the magnetic force of the second magnetic part are opposite to each other.
  7. In paragraph 1, A first ball member is disposed between the guide member and the holder, and The first ball member is a reflection module comprising a plurality of balls spaced apart along the direction of the second rotation axis.
  8. In Paragraph 7, The first pulling part is a reflection module disposed between the plurality of balls.
  9. In paragraph 1, The second rotation axis is a reflection module located between the first magnetic part and the second magnetic part.
  10. In paragraph 1, A first driving unit comprising a driving magnet portion disposed in the above holder and a coil portion facing the driving magnet portion; further comprising The above driving magnet part is a reflection module including a first driving magnet and a second driving magnet spaced apart in the direction of the first rotation axis.
  11. In Paragraph 10, A first ball member is disposed between the guide member and the holder, and the first ball member includes a plurality of balls spaced apart along the direction of the second rotation axis. A second ball member is disposed between the guide member and the housing, and the second ball member includes a plurality of balls spaced apart along the direction of the first rotation axis. The first driving member is spaced apart from the second ball member in the direction of the second rotation axis, and The first driving unit is a reflection module spaced apart from the first ball member in the direction of the first rotation axis.
  12. In Paragraph 10, A position sensing unit comprising a plurality of first position sensors disposed in the above housing; further comprising The plurality of first position sensors are reflection modules spaced apart in the direction of the first rotation axis.
  13. In Paragraph 12, The above position sensing unit further includes a plurality of sensing magnets disposed in the holder, and the plurality of sensing magnets are reflection modules spaced apart in the direction of the first rotation axis.
  14. In Paragraph 12, The above position sensing unit is, A first position signal of the holder is generated by performing a sum operation on the signal values output from the plurality of first position sensors, and A second position signal of the holder is generated by performing a difference operation on the signal values output from the plurality of first position sensors, and The first position signal is a position signal of either the rotation of the holder based on the first rotation axis or the rotation of the holder based on the second rotation axis, and The second position signal is a reflection module that is the remaining position signal among the rotation of the holder based on the first rotation axis and the rotation of the holder based on the second rotation axis.
  15. In paragraph 1, It further includes a first lens module having a first optical axis and coupled to the holder, and The first rotation axis and the second rotation axis are perpendicular to each other, and The first optical axis is a reflection module perpendicular to both the first rotation axis and the second rotation axis.
  16. Housing; A guide member disposed to be rotatable relative to the housing with respect to a first rotation axis; A holder mounted with a reflector member, positioned to be rotatable relative to the guide member with respect to a second rotation axis; A first magnetic part and a second magnetic part spaced apart from each other in the direction of the first rotation axis; A first driving unit comprising a driving magnet portion disposed in the holder and a coil portion facing the driving magnet portion; A first ball member comprising a plurality of balls spaced apart along the direction of the second rotation axis, disposed between the guide member and the holder; and A second ball member comprising a plurality of balls spaced apart along the direction of the first rotation axis, disposed between the guide member and the housing; The above driving magnet unit includes a first driving magnet and a second driving magnet spaced apart in the direction of the first rotation axis, and The first magnetic part includes a first magnet disposed on the guide member, and The second magnetic part includes a second magnet disposed on the guide member, and A camera module in which a first ball member is disposed between the first magnet and the second magnet.
  17. In Paragraph 16, It further includes a first pulling member disposed between the guide member and the holder, and The first pulling part is a camera module located between the plurality of balls of the first ball member.
  18. In Paragraph 17, The first pulling part comprises a first pulling magnet disposed in one of the guide member and the holder and a first pulling yoke disposed in the other. One side of the first pulling magnet facing the first pulling yoke has multiple polarities, and A camera module in which one side of the first magnet and one side of the second magnet facing the holder each have one polarity.
  19. In Paragraph 18, The gap between the first pulling magnet and the first pulling yoke is, A camera module that is narrower than the gap between the first magnet and the holder, and narrower than the gap between the second magnet and the holder.
  20. In Paragraph 16, The above coil portion includes a first coil facing one side of the first driving magnet and a second coil facing one side of the second driving magnet, and The one surface of the first driving magnet and the one surface of the second driving magnet are each polarized to have different polarities in a direction perpendicular to both the first rotation axis and the second rotation axis, and The other side of the first driving magnet has opposite polarity to the one side of the first driving magnet, and the other side of the second driving magnet has opposite polarity to the one side of the second driving magnet. One side of the first magnet has the same polarity as any one of the polarities of the other side of the first driving magnet, and One side of the second magnet has the same polarity as any one of the polarities of the other side of the second driving magnet.

Description

Reflection module and camera module including the same The present invention relates to a reflection module and a camera module including the same. Recently, camera modules that bend the path of light by placing a reflective element in front of the lens module are being adopted in mobile devices. In addition, the camera module has a shake correction function that corrects shaking during shooting to increase resolution. This shake correction function can be implemented through the two-axis rotation of the reflective member. At this time, since the reflective member is positioned in a rotatable state, there is a problem where the reflective member tilts to one side when the camera module's power is off. In addition, multiple drive units are required for the two-axis rotation of the reflector, but the structure of the multiple drive units is complex, which causes the size to increase and the weight to increase. FIG. 1 is a perspective view of a camera module according to one embodiment of the present invention. FIGS. 2 and FIGS. 3 are partially cutaway perspective views of a camera module according to one embodiment of the present invention. FIG. 4 is an exploded perspective view of a camera module according to one embodiment of the present invention. FIG. 5 is an exploded perspective view of the reflection module and housing. FIG. 6 is a bottom perspective view of the guide member of the reflection module. Fig. 7 is a partially exploded perspective view of the reflection module. Figure 8 is a plan view of a guide member. FIG. 9 is a bottom view of the guide member. FIG. 10 is a plan view of the holder and the reflector. Fig. 11 is a bottom view of the holder. FIG. 12 is a schematic cross-sectional view of the first magnetic part, the second magnetic part, and the second pulling part. FIGS. 13 and 14 are drawings for explaining the attractive and repulsive forces acting between a guide member and a holder. FIG. 15 is a perspective view of the reflection module and the first lens module. FIG. 16 is a drawing illustrating a variation of FIG. 15. FIG. 17 is a block diagram illustrating the configuration of a first driving unit and a position sensing unit according to an embodiment of the present invention. FIG. 18 is a perspective view of a first driving unit, a first ball member, and a second ball member according to an embodiment of the present invention. FIG. 19 is a plan view of a housing according to one embodiment of the present invention. FIG. 20 is a perspective view showing a second lens module separated from a camera module according to one embodiment of the present invention. FIG. 21 is a bottom perspective view of the second lens module. FIGS. 22 to 25 are drawings showing modified examples of the first magnetic part and the second magnetic part of the reflection module. FIG. 26 is an exploded perspective view of a camera module according to another embodiment of the present invention. Embodiments of the present invention will be described in detail below with reference to the drawings. However, the scope of the present invention is not limited to the embodiments presented. For example, a person skilled in the art who understands the concept of the present invention may propose other embodiments included within the scope of the concept of the present invention through the addition, modification, or deletion of components, and such embodiments shall also be deemed to be included within the scope of the concept of the present invention. Additionally, terms including ordinal numbers, such as "first," "second," etc., used in this specification may be used to describe various components, but said components are not limited by said terms, and said terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. A configuration included in one embodiment among the embodiments disclosed in this specification may also be included in other embodiments unless otherwise stated. The present invention relates to a reflection module and a camera module including the same, wherein the camera module can be mounted on a portable electronic device such as a mobile communication terminal, a smartphone, or a tablet PC. FIG. 1 is a perspective view of a camera module according to one embodiment of the present invention, FIG. 2 and FIG. 3 are partially cutaway perspective views of a camera module according to one embodiment of the present invention, and FIG. 4 is an exploded perspective view of a camera module according to one embodiment of the present invention. Referring to FIGS. 1 to 4, a camera module (1) according to one embodiment of the present invention includes a reflection module (300) and a housing (100). The reflection module (300) can be placed within the housing (100) and includes a reflection memb