CN111856839A - Camera module - Google Patents

Abstract

The camera module includes: a housing; a lens module disposed in an inner space of the housing to be movable in an optical axis direction and including at least one lens therein; a magnet disposed in the lens module; and a position detection sensor for detecting a position of the magnet. One or more of the position detection sensors are disposed to face a first polarity of the magnet, and one or more of the position detection sensors are disposed to face a second polarity of the magnet different from the first polarity.

Description

Camera module

Cross Reference to Related Applications

This application claims priority to korean patent application No. 10-2019-0050936 filed on 30.4.2019 and korean patent application No. 10-2019-0085338 filed on 15.7.2019 at the korean intellectual property office, the entire disclosures of which are incorporated herein by reference for all purposes.

Technical Field

The following description relates to a camera module.

Background

In addition to being installed in a smart phone, a camera has been generally installed in portable electronic devices such as a tablet Personal Computer (PC), a laptop computer, and the like, and an Auto Focus (AF) function, an Optical Image Stabilization (OIS) function, a zoom function, and the like have been added to cameras for mobile terminals.

However, for the implementation of various functions, the structure of the camera module has become complicated and the size of the camera module has increased, resulting in an increase in the size of the portable electronic device in which the camera module is mounted.

In addition, in the case of directly moving a lens or an image sensor for optical image stabilization, it is necessary to consider the weight of the lens or the image sensor itself and the weight of other members to which the lens or the image sensor is attached. This requires a driving force above a certain level, thereby increasing power consumption.

Further, in order to realize the AF function and the zoom function, a certain distance needs to be secured so that the lens can move in the optical axis direction. However, such a configuration may be difficult to achieve due to the thinness of the camera module.

Disclosure of Invention

This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

A camera module has a simple configuration and a reduced size while realizing functions such as an Auto Focus (AF) function, a zoom function, an Optical Image Stabilization (OIS) function, and the like.

A camera module, although having a plurality of lens groups, wherein the plurality of lens groups can be easily aligned in an optical axis direction.

The zoom lens and the reflection module are provided with stoppers or buffers so as not to be separated from the optimal positions.

In order to maximally express the performance of the zoom lens, it is intended to accurately measure the movement position of the zoom lens by a plurality of position detection sensors (such as hall sensors).

In one general aspect, a camera module includes: a housing; a lens module disposed in an inner space of the housing to be movable in an optical axis direction and including at least one lens therein; a magnet disposed in the lens module; and a position detection sensor configured to detect a position of the magnet. One or more of the position detection sensors are disposed to face a first polarity of the magnet, and one or more of the position detection sensors are disposed to face a second polarity of the magnet different from the first polarity.

The magnet may be a two-pole magnet magnetized to have an N pole, a neutral region, and an S pole, or may be a magnet in which separate magnets having an N pole and an S pole are arranged adjacent to each other.

Each of the position detection sensors may be disposed to face only the N pole or the S pole of the magnet.

The position detection sensor includes a first position detection sensor disposed to face the N pole, a second position detection sensor disposed to face the S pole, and a third position detection sensor disposed to face a region between the N pole and the S pole.

The position detection sensors may be spaced apart from each other at equal intervals in the optical axis direction.

The camera module may include a coil disposed in the housing and configured to face the magnet, and the position detection sensor may be disposed inside a winding of the coil.

The position of the magnet may be calculated based on a position value obtained by summing all the sensed values of the position detection sensors.

The position value may be all different values within the range of movement of the magnet.

In another general aspect, a camera module includes: a housing; a lens module disposed in an inner space of the housing to be movable in an optical axis direction, including at least one lens therein; a magnet disposed in the lens module and including at least one N pole and at least one S pole alternately arranged in an optical axis direction; and a position detection sensor for detecting a position of the magnet. One or more of the position detection sensors are disposed to face a first pole of the magnet, and one or more of the position detection sensors are disposed to face a second pole of the magnet.

The magnet may be a three-pole magnet magnetized to have at least three polarities including at least one N pole and at least one S pole, or may be a magnet in which at least three separate magnets each having an N pole and an S pole are arranged adjacent to each other.

The first pole of the magnet may have the same polarity as the second pole of the magnet, and the number of the position detection sensors disposed to face the first pole of the magnet may be the same as the number of the position detection sensors disposed to face the second pole of the magnet.

The first pole of the magnet may have the same polarity as the second pole of the magnet, the magnet may include a third pole disposed between the first pole and the second pole in the optical axis direction, and the first pole and the second pole may be spaced apart from the third pole by an equal distance in the optical axis direction.

The position detection sensor may include at least four position detection sensors including a first position detection sensor, a second position detection sensor, a third position detection sensor, and a fourth position detection sensor, the first position detection sensor being disposed to face a first end of the first pole in the optical axis direction, the second position detection sensor being disposed to face a second end of the first pole in the optical axis direction, the third position detection sensor being disposed to face a first end of the second pole in the optical axis direction, and the fourth position detection sensor being disposed to face a second end of the second pole in the optical axis direction.

The position detection sensor may include a fifth position detection sensor disposed between the first position detection sensor and the second position detection sensor in the optical axis direction and a sixth position detection sensor disposed between the third position detection sensor and the fourth position detection sensor in the optical axis direction.

The position detection sensors may include a first group of position detection sensors spaced apart at equal intervals in the optical axis direction and disposed to face the first pole, and a second group of position detection sensors spaced apart at equal intervals in the optical axis direction and disposed to face the second pole.

The camera module may include a first coil fixed to the housing and disposed in the housing to face a first pole of the magnet, and a second coil fixed to the housing and disposed in the housing to face a second pole of the magnet. The first pole of the magnet may have the same polarity as the second pole of the magnet.

In another general aspect, a camera module includes: a housing; a lens module including at least one lens and configured to move in an optical axis direction within the housing; a magnet provided in the lens module and including at least two magnetic poles alternately arranged in an optical axis direction; and a position detection sensor including at least one position detection sensor disposed to face a first pole of the magnet and at least one position detection sensor disposed to face a second pole of the magnet.

The first pole may have the same polarity as the second pole, the magnet may include a third pole having a different polarity from the first pole and the second pole, and the third pole may be disposed between the first pole and the second pole in the optical axis direction.

The first pole may have a polarity different from a polarity of the second pole.

The position detection sensor may include at least one position detection sensor disposed in a neutral region between the first pole and the second pole in the optical axis direction.

Other features and aspects will be apparent from the following detailed description, the accompanying drawings, and the claims.

Drawings

Fig. 1 is a perspective view of a portable electronic device according to an example.

Fig. 2 is a perspective view of a camera module according to an example.

Fig. 3A and 3B are cross-sectional views of a camera module according to an example.

Fig. 4 is an exploded perspective view of a camera module according to an example.

Fig. 5 is an exploded perspective view of a housing of a camera module according to an example.

Fig. 6A is a perspective view of a reflective module and a lens module coupled to a housing of a camera module, according to an example.

Fig. 6B is a perspective view of a reflective module and a lens module coupled to a housing of a camera module, according to another example.

Fig. 7 is a perspective view of a board having drive coils and sensors mounted thereon, the board being coupled to a housing of a camera module, according to an example.

Fig. 8A is an exploded perspective view of a rotation plate and a rotation holder in a camera module according to an example.

Fig. 8B is an exploded perspective view of a rotation plate and a rotation holder in a camera module according to another example.

Fig. 9A is an exploded perspective view of a housing and a rotary holder in a camera module according to an example.

Fig. 9B is an exploded perspective view of a housing and a rotary holder in a camera module according to another example.

Fig. 10 is an exploded perspective view of a housing and a lens barrel according to an example.

Fig. 11 is a perspective view showing a buffer of a rotation holder and a stopper of a zoom lens mounted according to an example.

Fig. 12 is an exploded perspective view in which a buffer of the rotation holder and a stopper of the zoom lens in fig. 11 are disassembled.

Fig. 13A is a perspective view illustrating another example of a zoom lens movement guide groove provided in a housing according to an example.

Fig. 13B is a reference view illustrating a shape in which the zoom lens of fig. 13A is mounted.

Fig. 14 is a reference view illustrating an example of a structure in which a zoom lens according to an example is fixed at a predetermined position.

Fig. 15 and 16 are reference views illustrating another example of a structure in which a zoom lens according to an example is precisely fixed at a predetermined position.

Fig. 17A is a view showing a positional relationship between a magnet provided in a lens barrel and four hall sensors according to an example.

Fig. 17B is a graph showing sensing values of four hall sensors according to the movement of the lens barrel in the positional relationship shown in fig. 17A.

Fig. 18A and 19A are views showing another example having only a modified number of hall sensors in the positional relationship shown in fig. 17A.

Fig. 18B and 19B are graphs showing sensing values of the hall sensor according to the movement of the lens barrel in the positional relationship of another example shown in fig. 18A and 19A.

Fig. 20A is a view showing a positional relationship between a magnet provided in a lens barrel and four hall sensors according to another example.

Fig. 20B is a graph showing sensing values of four hall sensors according to the movement of the lens barrel in the positional relationship shown in fig. 20A.

Fig. 21A is a view showing another example having only a modified number of hall sensors in the positional relationship shown in fig. 20A.

Fig. 21B is a graph showing sensing values of six hall sensors according to the movement of the lens barrel in the positional relationship shown in fig. 21A.

Fig. 22 is a perspective view of a main board and coils and components mounted thereon according to an example.

Fig. 23 is a perspective view of a portable electronic device according to another example.

Like reference numerals refer to like elements throughout the drawings and the detailed description. The drawings may not be to scale and the relative sizes, proportions and descriptions of elements in the drawings may be exaggerated for clarity, illustration and convenience.

Detailed Description

The following detailed description is provided to assist the reader in a thorough understanding of the methods, devices, and/or systems described herein. Various changes, modifications, and equivalents of the methods, devices, and/or systems described herein will, however, be apparent to those of ordinary skill in the art. The order of operations described herein is merely an example and is not limited to the order of operations described herein, but may be changed in addition to operations that must occur in a particular order, as will be apparent to those of ordinary skill in the art. Further, descriptions of functions and constructions well known to those of ordinary skill in the art may be omitted for clarity and conciseness.

The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

In this document, it should be noted that the use of the term "may" with respect to an example or embodiment, such as with respect to what an example or embodiment may contain or implement, means that there is at least one example or embodiment that contains or implements such a feature, and not all examples and embodiments are limited thereto.

Throughout the specification, when an element such as a layer, region or substrate is described as being "on," "connected to" or "coupled to" another element, it can be directly on, "connected to" or "coupled to" the other element or intervening one or more other elements may be present therebetween. In contrast, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there may be no intervening elements present therebetween.

As used herein, the term "and/or" includes any one of the associated listed items and any combination of any two or more of the associated listed items.

Although terms such as "first", "second", and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections are not limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, first component, first region, first layer, or first portion referred to in the examples described herein may also be referred to as a second member, second component, second region, second layer, or second portion without departing from the teachings of the examples.

Spatially relative terms, such as "above," "upper," "lower," and "lower," may be used herein for ease of description to describe one element's relationship to another element as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to other elements would then be "below" or "lower" relative to the other elements. Thus, the term "above" includes both an orientation of above and below, depending on the spatial orientation of the device. The device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative terms used herein are to be interpreted accordingly.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The articles "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, integers, operations, elements, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, components, and/or groups thereof.

The shapes of the illustrations as a result of manufacturing techniques and/or tolerances may vary. Accordingly, examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shapes that occur during manufacturing.

The features of the examples described herein may be combined in various ways, as will be apparent after understanding the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible, as will be apparent after understanding the disclosure of the present application.

Fig. 1 is a perspective view of a portable electronic device according to an example.

Referring to fig. 1, a portable electronic device 1 according to an example may be a portable electronic device such as a mobile communication terminal, a smart phone, a tablet Personal Computer (PC), or the like, in which a camera module 1000 is installed.

As shown in fig. 1, the portable electronic device 1 may be provided with a camera module 1000 to capture an image of a subject.

In this example, the camera module 1000 may include a plurality of lenses, and the optical axes (Z-axis) of the lenses may be disposed in a direction perpendicular to the thickness direction (Y-axis direction, or a direction from the front surface of the portable electronic apparatus to the rear surface thereof, or a direction opposite to the direction from the front surface of the portable electronic apparatus to the rear surface thereof) of the portable electronic apparatus 1.

In an example, the optical axes (Z-axis) of the plurality of lenses provided in the camera module 1000 may be formed in the width direction or the length direction of the portable electronic apparatus 1.

Therefore, even when the camera module 1000 has the AF function, the zoom function, the OIS function, and the like, the thickness of the portable electronic apparatus 1 can be made not to increase. Therefore, the portable electronic device 1 can be made thinner.

The camera module 1000 according to an example may have an AF function, a zoom function, and an OIS function.

The camera module 1000 having the AF function, the zoom function, and the OIS function requires various components, resulting in an increase in the size of the camera module 1000 compared to a conventional camera module.

The increased size of the camera module 1000 may cause a problem with miniaturization of the portable electronic device 1 in which the camera module 1000 is mounted.

For example, camera modules have more and more stacked lenses for zoom functionality. When a plurality of lenses are stacked in the thickness direction of the portable electronic device, the thickness of the portable electronic device may increase according to the number of stacked lenses. Therefore, a sufficient number of stacked lenses may not be secured without increasing the thickness of the portable electronic apparatus, thereby deteriorating the zoom function.

Further, in order to realize the AF function, the zoom function, and the OIS function, an actuator is required to move a plurality of lens groups in the optical axis direction or a direction perpendicular thereto. When the optical axis (Z-axis) of the lens group is formed in the thickness direction of the portable electronic device, an actuator for moving the lens group should also be installed in the thickness direction. Therefore, the thickness of the portable electronic device may increase.

Since the optical axes (Z-axis) of the plurality of lenses are set perpendicular to the thickness direction of the portable electronic apparatus 1, the portable electronic apparatus 1 can be made thinner even when the camera module 1000 having the AF function, the zoom function, and the OIS function is mounted.

Fig. 2 is a perspective view of a camera module according to an example, fig. 3A and 3B are sectional views of the camera module according to the example, and fig. 4 is an exploded perspective view of the camera module according to the example.

Referring to fig. 2 to 4, the camera module 1000 may include a reflection module 1100, a lens module 1200, and an image sensor module 1300 provided in a housing 1010.

The reflective module 1100 may be configured to change the moving direction of light. As an example, the moving direction of light incident through the opening portion 1031 of the cover 1030 covering the upper portion of the camera module 1000 may be changed to a direction toward the lens module 1200 by the reflection module 1100. To this end, the reflection module 1100 may include a reflection member 1110 configured to reflect light.

For example, the path of light incident through the thickness direction (Y-axis direction) of the camera module 1000 may be changed by the reflection module 1100 so that the moving direction of the incident light may be substantially the same as the optical axis (Z-axis) direction.

The lens module 1200 may include a plurality of lenses through which light whose moving direction is changed by the reflection module 1100 passes. The lens module 1200 may include at least three lens barrels 1210, 1220, and 1230. The AF function and the zoom function may be implemented according to the movement of at least three lens barrels 1210, 1220, and 1230 in the optical axis (Z axis) direction. Further, in this example, any one of the at least three lens barrels 1210, 1220, and 1230, such as the lens barrel 1230, may be fixed so that it does not move in the optical axis direction. The AF function and the zoom function may be implemented by the fixed lens barrel 1230 and the remaining two lens barrels 1210 and 1220.

The image sensor module 1300 may include an image sensor 1310 that converts light having passed through a plurality of lenses into an electrical signal, and a printed circuit board 1320 on which the image sensor 1310 may be mounted. In addition, the image sensor module 1300 may include an optical filter 1340 filtering incident light that has passed through the lens module 1200. The optical filter 1340 may be an infrared cut filter.

In the inner space of the housing 1010, the reflective module 1100 may be disposed in front of the lens module 1200 (in the Z-axis direction), and the image sensor module 1300 may be disposed behind the lens module 1200 (in the Z-axis direction).

Referring to fig. 2 to 22, the camera module 1000 may include a reflection module 1100, a lens module 1200, and an image sensor module 1300, which may be disposed in a housing 1010.

The reflection module 1100, the lens module 1200, and the image sensor module 1300 may be sequentially disposed from side to side in the housing 1010. The housing 1010 may be configured to have an inner space such that the reflection module 1100, the lens module 1200, and the image sensor module 1300 may all be embedded therein (the printed circuit board 1320 included in the image sensor module 1300 may be attached to the outside of the housing 1010).

For example, as shown in the drawings, the housing 1010 may be integrally provided so that the reflective module 1100 and the lens module 1200 may be embedded in the inner space thereof. However, the configuration may not be limited thereto, and for example, separate housings in which the reflection module 1100 and the lens module 1200 are respectively embedded may be connected to each other.

The housing 1010 may be covered by the cover 1030 so that the inner space is not exposed.

The cover 1030 may include an opening portion 1031 such that light is incident through the opening portion 1031, and a moving direction of the light incident through the opening portion 1031 may be changed by the reflection module 1100, thereby causing the light to be incident on the lens module 1200. The cover 1030 may be integrally provided to cover the entire housing 1010, or divided and provided to cover separate parts of the reflective module 1100 and the lens module 1200, respectively.

The reflection module 1100 may include a reflection member 1110 that reflects light. In addition, light incident on the lens module 1200 may pass through a plurality of lens groups (at least three lens barrels 1210, 1220, and 1230), and then may be converted into an electrical signal by the image sensor 1310 and stored.

The housing 1010 may include a reflection module 1100 and a lens module 1200 in an inner space. The reflective module 1100 may be disposed at a front side of the inner space of the housing 1010, and the lens module 1200 may be disposed at a rear side of the inner space of the housing 1010. The spaces in which the lens modules 1200 can be disposed can be distinguished from each other by the protrusion walls 1009. The protrusion wall 1009 may be configured to protrude from both side walls of the case 1010 toward the inner space.

In the case where the reflection module 1100 is disposed at the front side, the rotary holder 1120 may be closely adhered to and supported on the inner wall surface of the housing 1010 by an attractive force between the drag yoke 1153 disposed on the inner wall surface of the housing 1010 and the drag magnet 1151 disposed on the rotary holder 1120. Although not shown in the drawings, the housing 1010 may be provided with a traction magnet, and the rotary holder 1120 may be provided with a traction yoke. Hereinafter, for convenience of explanation, the structure shown in the drawings will be described.

The first ball support 1131, the rotation plate 1130, and the second ball support 1133 may be disposed between an inner wall surface of the housing 1010 and the rotation holder 1120.

As will be described in detail below, since the first and second ball supports 1131 and 1133 may be partially fitted to the guide grooves 1132, 1134, 1021, and 1121 so as to be closely adhered thereto, a small space may be required between the rotating holder 1120 and the protruding wall 1009 when the rotating holder 1120 and the rotating plate 1130 are fitted to the inner space of the case 1010. When the rotation holder 1120 is mounted on the housing 1010, the rotation holder 1120 may be closely adhered to the inner wall surface of the housing 1010 by an attractive force between the drag yoke 1153 and the drag magnet 1151, thereby allowing a relatively small space to be formed between the rotation holder 1120 and the third lens barrel 1230.

In this example, a buffer member 1050 may be included, and the buffer member 1050 may be fitted to the upper portion of the housing 1010 while supporting the rotary holder 1120 (of course, even without the buffer member 1050, it may be fixed by the attractive force between the traction magnet 1151 and the traction yoke 1153).

The buffer 1050 may include a frame 1051 fitted to an upper portion of the case 1010, a locking portion 1055, and an extension portion 1052 extending downward (e.g., in the Y-axis direction) from the frame 1051. The extension portion 1052 may include a buffer material 1053 to protrude toward the rotation holder 1120 in the optical axis direction. The cushioning material 1053 may be configured to fit into a through hole provided in the extension portion 1052, and the cushioning material 1053 may be any material as long as it is an elastic material, such as urethane, silicone, epoxy, polymer material, or the like.

The locking portion 1055 may be locked when assembled to the outside of the housing 1010. The housing 1010 may be provided with an insertion groove 1019 (see, e.g., fig. 5), and the frame 1051 and the extension portion 1052 are fitted into the insertion groove 1019. The insertion groove 1019 may include a first insertion groove 1019a provided along an inner side of an upper edge of the housing 1010, a second insertion groove 1019b extending downward from the other end of the first insertion groove 1019a perpendicular to the optical axis direction, and a third insertion groove 1019c provided at one end of the first insertion groove 1019a along an outer side of the housing 1010 (e.g., see fig. 12).

Since the frame 1051 may be fitted into the first insertion groove 1019a, the locking portion 1055 provided at one end of the frame 1051 may be fitted to the outside of the housing 1010, and the extension portion 1052 provided at the other end of the frame 1051 may be fitted into the second insertion groove 1019b, the frame 1051 may be firmly fixed so as not to move in the optical axis direction. In addition, an adhesive may be applied between the frame 1051 and the housing 1010 to further bond to each other.

Cushioning material 1053 may be configured to fit into a through-hole provided in extension portion 1052 (of course, cushioning material 1053 may be attached to one or both sides of extension portion 1052 by bonding with an adhesive). The cushioning material 1053 may be provided to protrude to both sides of the extension portion 1052. The buffer material 1053 may serve as a buffer for absorbing the impact of the rotation holder 1120 or a stopper for limiting the moving distance, and the third lens barrel 1230 may be fixed (fig. 6B). In this case, one side of the third lens barrel 1230 in the optical axis direction may be supported.

The buffer 1050 may serve as a bracket supporting the rotational holder 1120 when the reflective module 1100 is not driven, and the buffer 1050 may serve as a buffer or stopper controlling the movement of the rotational holder 1120 when the reflective module 1100 is driven. A space may be provided between the buffer 1050 and the rotation holder 1120 so that the rotation holder 1120 rotates smoothly. Alternatively, even when the buffer 1050 is in contact with the rotational holder 1120, the buffer 1050 may be formed of an elastic material to allow the rotational holder 1120 to smoothly move while being supported by the buffer 1050.

The housing 1010 may include a first driving part 1140 and a second driving part 1240 configured to drive the reflection module 1100 and the lens module 1200, respectively. The first driving part 1140 may include a plurality of coils 1141b, 1143b, and 1145b for driving the reflection module 1100, and the second driving part 1240 may include a plurality of coils 1241b, 1243b, and 1245b for driving the lens module 1200, wherein the lens module 1200 may include a first lens barrel 1210, a second lens barrel 1220, and a third lens barrel 1230.

In addition, since the plurality of coils 1141b, 1143b, 1145b, 1241b, 1243b, and 1245b may be disposed in the case 1010 in a state in which they are mounted on the main board 1070, the case 1010 may be provided with a plurality of through holes 1010a, 1010b, 1010c, 1010d, 1010e, 1010f, and 1010g so that the plurality of coils 1141b, 1143b, 1145b, 1241b, 1243b, and 1245b may be exposed to an inner space of the case 1010.

The main boards 1070 on which the coils 1141b, 1143b, 1145b, 1241b, 1243b and 1245b may be mounted may be completely connected to each other to be provided as a single board, as shown in the drawing. In this case, a single terminal may be provided, thereby making it easy to connect external power. The main board 1070 is not limited to such a configuration, and may also be provided as a plurality of boards by separating a board on which the coil for the reflection module 1100 is mounted from a board on which the coil for the lens module 1200 is mounted.

The reflection module 1100 may change a path of light incident through the opening portion 1031. When a still image or a moving image can be photographed, the still image may be blurred or the moving image may be shaken due to hand shake or other user movement. In this case, the reflection module 1100 may stabilize hand shaking or other user movement by moving the rotation holder 1120 on which the reflection member 1110 is mounted. For example, when a shake is generated due to hand shake or other motion of a user when a still image or a moving image is photographed, a relative displacement corresponding to the shake may be provided to the rotary holder 1120 to compensate for the shake.

The OIS function can be realized by the movement of the rotation holder 1120 having a relatively low weight because it does not include a lens or the like, and thus power consumption of the OIS function can be significantly reduced.

For example, for the OIS function implementation, the moving direction of light may be changed by moving the rotational holder 1120 on which the reflection member 1110 is disposed without moving a lens barrel or an image sensor including a plurality of lenses so that light on which OIS is performed may be incident to the lens module 1200.

The reflective module 1100 may include a rotary holder 1120 provided to be supported by the housing 1010, a reflective member 1110 mounted on the rotary holder 1120, and a first driving part 1140 moving the rotary holder 1120.

The reflective member 1110 may change the moving direction of light. For example, the reflective member 1110 may be a mirror or a prism that reflects light (for convenience of explanation, the reflective member 1110 may be illustrated as a prism in the drawings).

The reflective member 1110 may be fixed to the rotation holder 1120. The rotating holder 1120 has a mounting surface 1122, and the reflecting member 1110 is mounted on the mounting surface 1122.

The mounting surface 1122 of the rotating holder 1120 may be an inclined surface so that the path of light is changed. The mounting surface 1122 may be a surface inclined by 30 ° to 60 ° with respect to the optical axis (Z-axis) of the plurality of lenses. The inclined surface of the rotation holder 1120 may be directed to an opening portion 1031 of the cover 1030, wherein light is incident on the opening portion 1031.

The rotation holder 1120 having the reflection member 1110 mounted thereon may be installed to be movable in the inner space of the case 1010. For example, the rotational holder 1120 may be installed in the housing 1010 so as to be rotatable about a first axis (X-axis) and a second axis (Y-axis). The first axis (X-axis) and the second axis (Y-axis) may refer to axes perpendicular to the optical axis (Z-axis), and may be perpendicular to each other.

The rotating holder 1120 may be supported in the housing 1010 by first ball bearings 1131 aligned along a first axis (X-axis) and second ball bearings 1133 aligned along a second axis (Y-axis) such that the rotating holder 1120 smoothly rotates about the first axis (X-axis) and the second axis (Y-axis). By way of example, two first ball bearings 1131 aligned along a first axis (the X-axis) and two second ball bearings 1133 aligned along a second axis (the Y-axis) are shown in the figures. The rotary holder 1120 is rotatable about a first axis (X-axis) and a second axis (Y-axis) by the first driving part 1140, as described below.

In addition, first and second ball supports 1131 and 1133 may be provided on the front and rear surfaces of the rotating plate 1130, respectively (or alternatively, the first and second ball supports 1131 and 1133 may be provided on the rear and front surfaces of the rotating plate 1130, respectively; that is, the first ball supports 1131 may be aligned along the second axis (Y-axis) and the second ball supports 1133 may be aligned along the first axis (X-axis); for ease of explanation, the structure shown in the drawings will be described below). The rotation plate 1130 may be disposed between the rotation holder 1120 and the inner surface of the case 1010.

The rotating holder 1120 may be supported in the housing 1010 by the rotating plate 1130 using an attractive force between the drag magnet 1151 or the drag yoke provided on the rotating holder 1120 and the drag yoke 1153 or the drag magnet provided on the housing 1010 (the first ball support 1131 and the second ball support 1133 may also be provided between the rotating holder 1120 and the housing 1010).

Guide grooves 1132 and 1134 may be provided on the front and rear surfaces of the rotation plate 1130 such that the first and second ball supports 1131 and 1133 are inserted, respectively. Guide slots 1132 and 1134 may include a first guide slot 1132 and a second guide slot 1134, with a first ball bearing 1131 partially inserted into first guide slot 1132 and a second ball bearing 1133 partially inserted into second guide slot 1134.

The housing 1010 may be provided with a third guide groove 1021 in which the first ball bearings 1131 are partially inserted, and the rotation holder 1120 may be provided with a fourth guide groove 1121 in which the second ball bearings 1133 are partially inserted.

The first, second, third, and fourth guide grooves 1132, 1134, 1021, and 1121 described above may be provided in a hemispherical or polygonal (polygonal prism or pyramid) groove shape such that the first and second ball bearings 1131 and 1133 may be easily rotated therein.

The first and second ball bearings 1131 and 1133 may serve as bearings while rolling or sliding in the first, second, third, and fourth guide grooves 1132, 1134, 1021, and 1121.

As shown in fig. 8B and 9B, the first and second ball supports 1131a and 1133a may be fixed to both surfaces of the rotation plate 1130, respectively.

The configuration is not limited thereto, and the first and second ball supports 1131a and 1133a may have a structure in which they may be fixedly disposed in at least one of the housing 1010, the rotation plate 1130, and the rotation holder 1120. For example, the first ball supports 1131a may be fixedly disposed in the housing 1010 or on the rotating plate 1130, and the second ball supports 1133a may be fixedly disposed on the rotating plate 1130 or the rotating holder 1120. In this case, only a member facing a member in which the first ball bearings 1131a or the second ball bearings 1133b are fixedly disposed may be provided with the guide grooves, and the ball bearings may function as friction bearings by sliding rather than rotating.

Further, the first and second ball supports 1131 and 1133 may be separately manufactured and then attached to any one of the housing 1010, the swivel plate 1130, and the swivel holder 1120. Alternatively, the first and second ball supports 1131 and 1133 may be provided integrally with the housing 1010, the swivel plate 1130, or the swivel holder 1120 when the housing 1010, the swivel plate 1130, or the swivel holder 1120 is manufactured.

The first driving part 1140 generates a driving force so that the rotation holder 1120 can rotate about two axes.

As an example, the first driving part 1140 may include a plurality of magnets 1141a, 1143a, and 1145a, and a plurality of coils 1141b, 1143b, and 1145b arranged to face the plurality of magnets 1141a, 1143a, and 1145a, respectively.

When power is supplied to the plurality of coils 1141b, 1143b, and 1145b, the rotating holder 1120 on which the magnets 1141a, 1143a, and 1145a may be mounted may rotate about the first axis (X-axis) and the second axis (Y-axis) by an electromagnetic effect between the plurality of magnets 1141a, 1143a, and 1145a and the plurality of coils 1141b, 1143b, and 1145 b.

A plurality of magnets 1141a, 1143a, and 1145a may be mounted on the rotating holder 1120. As an example, the magnet 1141a may be mounted on a lower surface of the rotating holder 1120, and the remaining magnets 1143a and 1145a may be mounted on a side surface of the rotating holder 1120.

A plurality of coils 1141b, 1143b, and 1145b may be mounted on the housing 1010. As an example, a plurality of coils 1141b, 1143b, and 1145b may be mounted on the case 1010 through the main board 1070. A plurality of coils 1141b, 1143b, and 1145b may be provided on main board 1070, and main board 1070 may be mounted on case 1010.

In the drawings, an example is shown in which the main plate 1070 may be integrally provided so that both the coil for the reflection module 1100 and the coil for the lens module 1200 may be mounted thereon. The main plate 1070 may be provided as at least two separate plates on which the coil for the reflection module 1100 and the coil for the lens module 1200 may be mounted, respectively.

When rotating the rotating holder 1120, a closed loop control method involving sensing the position of the rotating holder 1120 and providing feedback may be used.

Therefore, the position detection sensors 1141c and 1143c may be required for closed-loop control. The position detection sensors 1141c and 1143c may be hall sensors.

The position detection sensors 1141c and 1143c may be disposed inside or outside the coils 1141b and 1143b, respectively, and may be mounted on the main board 1070, wherein each of the coils 1141b and 1143b is mounted on the main board 1070.

The main board 1070 may be provided with a gyro sensor (not shown) sensing a shaking factor such as hand shake or other user movement, and may be provided with a driver integrated circuit (IC; not shown) supplying a driving signal to the plurality of coils 1141b, 1143b, and 1145 b.

When the rotational holder 1120 rotates about the first axis (X-axis), the rotation plate 1130 may rotate about the first ball support 1131 arranged along the first axis (X-axis), which causes the rotational holder 1120 to also rotate (in this case, the rotational holder 1120 may not move with respect to the rotation plate 1130).

Further, when the rotational holder 1120 rotates about the second axis (Y-axis), the rotational holder 1120 rotates about the second ball support 1133 arranged along the second axis (Y-axis) (in this case, the rotation plate 1130 may not rotate, and the rotational holder 1120 may thus move relative to the rotation plate 1130).

For example, the first ball bearings 1131 may operate when the rotating holder 1120 rotates about a first axis (X-axis), and the second ball bearings 1133 may operate when the rotating holder 1120 rotates about a second axis (Y-axis). This is because, as shown in the drawing, when the rotary holder 1120 rotates about the first axis (X-axis), the second ball bearings 1133 aligned along the second axis (Y-axis) cannot move with being fitted into the guide grooves 1134 and 1121, and when the rotary holder 1120 rotates about the second axis (Y-axis), the first ball bearings 1131 aligned along the first axis (X-axis) cannot move with being fitted into the guide grooves 1021 and 1132.

The light reflected on the reflection module 1100 may be incident on the lens module 1200. By moving at least three lens barrels 1210, 1220, and 1230 provided in the lens module 1200 in the optical axis direction (Z axis direction), an AF function or a zoom function can be realized for incident light.

Referring to fig. 6A, the two lens barrels 1210 and 1220 at the rear side may be responsible for a zoom function, and the lens barrel 1230 at the front side may be responsible for an AF function. Further, the three lens barrels 1210, 1220, and 1230 may be responsible for a zoom function and an AF function in various combinations.

Various deformations may additionally be controlled. Referring to fig. 6B, for example, the rear two lens barrels 1210 and 1220 individually or collectively perform a zoom function or an AF function, wherein, for example, the two lens barrels 1210 and 1220 are combined to perform the zoom function, and the rearmost lens barrel 1210 may also be responsible for the AF function, and the front lens barrel 1230 may remain fixed to the case 1010. Further, although not shown in the drawings, any one of the three lens barrels 1210, 1220, and 1230 may remain fixed to the housing 1010, and the remaining two lens barrels may be individually or collectively responsible for a zoom function or an AF function. In this case, the lens barrel (e.g., lens barrel 1230) fixed to the housing 1010 does not need a ball bearing or the like interposed between the driving magnet or the coil facing the driving magnet and the housing 1010.

The housing 1010 may be configured to include a space in which one front lens barrel 1230 and two rear lens barrels 1210 and 1220 may be separated by a protruding wall 1009, but may not be limited to this configuration. The three lens barrels 1210, 1220, and 1230 may be disposed in the same space or divided in separate spaces.

The plurality of stacked lens groups disposed in the lens module 1200 may be divided into at least three lens barrels 1210, 1220, and 1230, respectively. Even when a plurality of stacked lens groups are divided and disposed in at least three lens barrels 1210, 1220, and 1230, the optical axis may be aligned in the Z-axis direction (the direction in which light may be emitted from the reflective module 1100).

The lens module 1200 may include a second driving part 1240 to implement the AF function and the zoom function.

The lens module 1200 may include at least three lens barrels in the inner space of the housing 1010: the first, second, and third lens barrels 1210, 1220, and 1230, and may include a second driving part 1240, the second driving part 1240 moving the three lens barrels 1210, 1220, and 1230 in the optical axis (Z axis) direction with respect to the housing 1010.

The first, second, and third lens barrels 1210, 1220, and 1230 may be configured to move substantially in the optical axis (Z axis) direction for a function AF or zoom function.

In this regard, the second driving part 1240 generates a driving force to move the first, second, and third lens barrels 1210, 1220, and 1230 in the optical axis (Z axis) direction. For example, the second driving part 1240 implements an AF function or a zoom function by individually moving the first, second, and third lens barrels 1210, 1220, and 1230 in the optical axis (Z axis) direction.

The first, second, and third lens barrels 1210, 1220, and 1230 may be configured to be supported on a bottom surface of the housing 1010. For example, the first, second, and third lens barrels 1210, 1220, and 1230 may be individually supported by ball bearings on the bottom surface of the housing 1010. Hereinafter, an example in which the first, second, and third lens barrels 1210, 1220, and 1230 may be individually supported by ball bearings on the bottom surface of the housing 1010 will be mainly described.

As an example, the second driving part 1240 may include a plurality of magnets 1241a, 1243a, and 1245a, and a plurality of coils 1241b, 1243b, and 1245b disposed to face the magnets 1241a, 1243a, and 1245a, respectively.

When power is supplied to the coils 1241b, 1243b and 1245b, the first, second and third lens barrels 1210, 1220 and 1230, on which the magnets 1241a, 1243a and 1245a may be mounted, respectively, may be moved in the optical axis (Z-axis) direction by an electromagnetic effect between the magnets 1241a, 1243a and 1245a and the coils 1241b, 1243b and 1245 b.

A plurality of magnets 1241a, 1243a and 1245a may be mounted on the first, second and third lens barrels 1210, 1220 and 1230, respectively. For example, the first magnet 1241a may be mounted on a side surface of the first lens barrel 1210, and the second magnet 1243a may be mounted on a side surface of the second lens barrel 1220, and the third magnet 1245a may be mounted on a side surface of the third lens barrel 1230.

A plurality of coils 1241b, 1243b and 1245b may be mounted on the case 1010 to face the plurality of magnets 1241a, 1243a and 1245a, respectively. Since the plurality of magnets 1241a, 1243a and 1245a may be disposed on both side surfaces of the first, second and third lens barrels 1210, 1220 and 1230, the plurality of coils 1241b, 1243b and 1245b may be disposed on both side walls to face the plurality of magnets 1241a, 1243a and 1245 a.

For example, main board 1070 may be mounted on case 1010 with a plurality of coils 1241b, 1243b and 1245b mounted thereon.

When moving the first, second, and third lens barrels 1210, 1220, 1230, a closed loop control method may be used that involves sensing the position of the first, second, and third lens barrels 1210, 1220, 1230 and providing feedback. Thus, closed loop control may require position detection sensors 1241c, 1243c, and 1245 c. The position detection sensors 1241c, 1243c, and 1245c may be hall sensors.

The position detection sensors 1241c, 1243c, and 1245c may be disposed inside or outside the coils 1241b, 1243b, and 1245b, respectively, and may be mounted on the main board 1070, wherein each of the coils 1241b, 1243b, and 1245b may be mounted on the main board 1070.

In the drawing, the first lens barrel 1210 and the second lens barrel 1220 may be driven by a pair of coils and magnets. In this case, the coil and the magnet may be provided on either side. The coil and the magnet may have slightly enlarged sizes to enhance the driving force. In this case, a plurality of position detection sensors 1241c and 1243c may be provided for accurate position sensing. In the drawing, four position detection sensors 1241c and 1243c may be provided inside each of coils 1241b and 1243b that drive the first and second lens barrels 1210 and 1220. This is because the first and second lens barrels 1210 and 1220 may move a considerable distance in the optical axis direction to achieve zooming, and thus a sufficient number of hall sensors should be provided to sense a correct position.

The first lens barrel 1210 may be provided in the housing 1010 so as to be movable in the optical axis (Z-axis) direction. For example, a plurality of third ball supports 1215 may be disposed between the first lens barrel 1210 and the bottom surface of the housing 1010.

The plurality of third ball supports 1215 serve as bearings for guiding the movement of the first lens barrel 1210 in implementing the AF function and the zoom function.

The plurality of third ball bearings 1215 may be configured to roll in the optical axis (Z-axis) direction when a driving force to move the first lens barrel 1210 in the optical axis (Z-axis) direction is generated. Accordingly, the plurality of third ball supports 1215 guide the movement of the first lens barrel 1210 in the optical axis (Z-axis) direction.

A plurality of guide grooves 1214 and 1013, 1014 in which the third ball bearings 1215 are accommodated may be formed on the lower surface of the first lens barrel 1210 and on the bottom surface of the housing 1010 facing the first lens barrel 1210, and some of the guide grooves may be elongated in the optical axis (Z-axis) direction.

A plurality of third ball bearings 1215 may be received in the guide slots 1214 and 1013, 1014 and may be inserted to fit between the first lens barrel 1210 and the housing 1010.

Some or all of the guide grooves 1214 and 1013, 1014 may be elongated in the optical axis (Z-axis) direction. Further, the cross-section of the guide grooves 1214 and 1013, 1014 may have various shapes such as a circular shape and a polygonal shape.

In this case, the first lens barrel 1210 may be pressed toward the bottom of the case 1010, so that the plurality of third ball supports 1215 may remain in contact with the first lens barrel 1210 and the case 1010. To this end, a drag yoke 1016 (see, e.g., fig. 10) may be mounted on a bottom surface of the housing 1010 to face a drag magnet 1216 (see, e.g., fig. 10) mounted on a lower surface of the first lens barrel 1210. The pull yoke 1016 may be formed of a magnetic material. The drag magnet may be mounted on a bottom surface of the housing 1010, and the drag yoke may be mounted on a lower surface of the first lens barrel 1210.

A coil 1241b driving the first lens barrel 1210 may be disposed on one side surface of the case 1010. In this case, an electromagnetic force acts on one side surface of the first lens barrel 1210, and thus the pulling magnet 1216 and the pulling yoke 1016 may be biased toward the one side surface from the center of the housing 1010 so as to drive the first lens barrel 1210. The first lens barrel 1210 may include a main body part 1210a and a magnet mounting part 1210b extending to a side surface of the second lens barrel 1220 in an optical axis direction, so as to increase the size of the magnet 1241a to enhance the driving force. Further, in order to increase the size of the magnet 1243a to enhance the driving force, the second lens barrel 1220 may include a main body part 1220a and a magnet mounting part 1220b extending to a side surface of the first lens barrel 1210 in the optical axis direction.

The coil 1243b driving the second lens barrel 1220 may be disposed on the other side surface, which may be an opposite side surface of one side surface of the case 1010 on which the coil 1241b may be disposed. In this case, since an electromagnetic force may be applied to the other side surface of the second lens barrel 1220, the drag magnet 1226 and the drag yoke 1017 (see, for example, fig. 10) may be biased from the center of the housing 1010 toward the other side surface in order to drive the second lens barrel 1220.

In addition, the coil 1245b driving the third lens barrel 1230 may be disposed on both side surfaces or one side surface of the housing 1010. When the coil 1245b is disposed only on one side of the housing 1010, the pulling magnet 1236 and the pulling yoke 1018 (see, e.g., fig. 10) may be biased toward one side surface from the center of the housing 1010, similar to the first and second lens barrels 1210 and 1220, so as to drive the third lens barrel 1230. However, this refers to a case in which the coils driving the lens barrels 1210, 1220, and 1230 may be disposed only on one side surface of one side surface and the other side surface. When the coils are disposed on both side surfaces, the traction magnets and the traction yoke may be disposed substantially at the center of the housing 1010.

The second lens barrel 1220 may be provided in the housing 1010 so as to be movable in the optical axis (Z-axis) direction. As an example, the second lens barrel 1220 may be disposed in parallel with the first lens barrel 1210 in the optical axis direction at the front side of the first lens barrel 1210.

A plurality of fourth ball bearings 1225 may be disposed between the second lens barrel 1220 and the bottom surface of the housing 1010, and the second lens barrel 1220 may slide with respect to the housing 1010 through the fourth ball bearings 1225.

The plurality of fourth ball bearings 1225 may be configured to assist the sliding movement of the second lens barrel 1220 in the optical axis direction (Z-axis direction) when the driving force may be generated such that the second lens barrel 1220 moves in the optical axis (Z-axis) direction.

A plurality of guide grooves 1224 and 1013, 1014 in which the fourth ball bearing 1225 is accommodated may be formed on the lower surface of the second lens barrel 1220 and the bottom surface of the housing 1010, and some of the guide grooves may be elongated in the optical axis (Z-axis) direction.

A plurality of fourth ball bearings 1225 may be accommodated in the guide grooves 1224 and 1013, 1014, and may be inserted to fit between the second lens barrel 1220 and the housing 1010.

Each of the plurality of guide grooves 1224 and 1013, 1014 may be elongated in the optical axis (Z-axis) direction. Further, the cross-section of the guide grooves 1224 and 1013, 1014 may be various shapes such as a circular shape, a polygonal shape, or the like.

The second lens barrel 1220 may be pressed toward the bottom surface of the housing 1010, so that the fourth ball bearings 1225 may remain in contact with the second lens barrel 1220 and the housing 1010.

To this end, the traction yoke 1017 may be mounted on the bottom surface of the housing 1010 to face the traction magnet 1226 mounted on the second lens barrel 1220. The traction yoke 1017 may be a magnetic material. The drag magnet may be mounted on the bottom surface of the housing 1010, and the drag yoke may be mounted on the lower surface of the second lens barrel 1220.

The third lens barrel 1230 may be provided in the housing 1010 so as to be movable in the optical axis (Z-axis) direction. As an example, the third lens barrel 1230 may be disposed in parallel with the second lens barrel 1220 in the optical axis direction at the front side of the second lens barrel 1220.

A plurality of fifth ball bearings 1235 may be disposed between the third lens barrel 1230 and the bottom surface of the housing 1010, and the third lens barrel 1230 may be slid with respect to the housing 1010 by the fifth ball bearings 1235.

The plurality of fifth ball bearings 1235 may be configured to assist the sliding motion of the third lens barrel 1230 in the optical axis direction (Z-axis direction) when the driving force is generated, so that the third lens barrel 1230 moves in the optical axis (Z-axis) direction.

A plurality of guide grooves 1234 and 1015 in which the fifth ball bearings 1235 are received may be formed on the lower surface of the third lens barrel 1230 and the bottom surface of the housing 1010, and some of the guide grooves 1234 and 1015 may be elongated in the optical axis (Z-axis) direction.

The plurality of fifth ball bearings 1235 may be received in the guide grooves 1234 and 1015, and may be inserted to be fitted between the third lens barrel 1230 and the housing 1010.

Each of the plurality of guide grooves 1234 and 1015 may be elongated in the optical axis (Z-axis) direction. In addition, the cross-sections of the guide grooves 1234 and 1015 may have various shapes, such as a circular shape, a polygonal shape, and the like.

In this case, the third lens barrel 1230 may be pressed toward the bottom surface of the housing 1010, so that the fifth ball holder 1235 may remain in contact with the third lens barrel 1230 and the housing 1010.

To this end, the drag yoke 1018 may be mounted on the bottom surface of the housing 1010 to face the drag magnet 1236 mounted on the third lens barrel 1230. The pull yoke 1018 may be a magnetic material. The drag magnet may be mounted on the bottom surface of the housing 1010, and the drag yoke may be mounted on the lower surface of the third lens barrel 1230.

Guide grooves 1013, 1014, and 1015 provided in housing 1010 to guide the movement of third, fourth, and fifth ball bearings 1215, 1225, and 1235 may each have an elongated groove shape extending in the optical axis direction, or may be a guide groove in which at least two guide grooves may be connected to each other. In the case where at least two of the guide grooves 1013, 1014, and 1015 may be interconnected guide grooves, the first, second, and third lens barrels 1210, 1220, and 1230 may be easily aligned in the optical axis direction.

An example in which the guide grooves 1013 and 1014 provided in the moving path of the first and second lens barrels 1210 and 1220 may be provided as a single guide groove may be shown, in which the guide grooves 1013 and 1014 may be connected to each other, and the third lens barrel 1230 may be separately provided. Although not limited thereto, the guide grooves may be provided in a form in which only the guide grooves 1014 and 1015 for moving the second and third lens barrels 1220 and 1230 may be connected to each other, or in which all the guide grooves 1013, 1014, and 1015 may be connected.

At least some of the guide grooves 1214, 1224, and 1234 of the first, second, and third lens barrels 1210, 1220, and 1230 may protrude toward the bottom of the housing 1010 on both sides of the optical axis, and thus, separation prevention protrusions 1213, 1223, and 1233 may be provided to prevent separation of the ball bearings 1215, 1225, and 1235. The separation prevention protrusions 1213, 1223 and 1233 may be provided in a shape corresponding to the shape of the guide grooves 1013, 1014 and 1015 provided in the housing 1010. When the first, second, and third lens barrels 1210, 1220, and 1230 are moved in the optical axis direction, the separation prevention protrusions 1213, 1223, and 1233 may be provided to have a space not to contact the bottom of the guide grooves 1013, 1014, and 1015.

The separation prevention protrusions are not limited to those provided in the first, second, and third lens barrels 1210, 1220, and 1230, and may be provided in the housing 1010 in the same principle.

Further, referring to fig. 13A, in a housing 1010 according to another example of the present disclosure, a first lens barrel 1210 and a second lens barrel 1220 may be moved by different guide grooves 1013A, 1013b, 1014a, and 1014b, respectively. For example, the housing 1010 may include a total of four first guide grooves 1013a and 1013b and second guide grooves 1014a and 1014b separately provided, respectively, and the first lens barrel 1210 may be supported by the third ball bearings 1215 fitted to the first guide grooves 1013a and 1013b, and the second lens barrel 1220 may be supported by the fourth ball bearings 1225 fitted to the second guide grooves 1014a and 1014 b.

In this case, since the first and second lens barrels 1210 and 1220 may be slightly staggered in a direction perpendicular to the optical axis direction, each of the extension portions 1219 and 1229 may be sufficiently moved in the optical axis direction without interference. Therefore, the zooming performance can be further improved.

The first, second, and third lens barrels 1210, 1220, and 1230 according to this example may be sequentially disposed in an optical axis direction, and the first and second lens barrels 1210 and 1220 may be provided with coils 1241b and 1243b and magnets 1241a and 1243a, respectively. Further, as shown, the third lens barrel 1230 may be provided with a coil 1245b and a magnet 1245a at one side thereof. The magnets 1241a, 1243a and 1245a provided in the first, second and third lens barrels 1210, 1220 and 1230 may be alternately provided at one side and the other side in a zigzag manner to minimize mutual electromagnetic effects.

Since the first and second lens barrels 1210 and 1220 according to this example can move in the optical axis direction to achieve zooming or auto-focusing in one space partitioned by the one or more protrusion walls 1009, they can contact each other. In this case, the optical axis direction position cannot be accurately controlled due to damage or excessive stroke.

Thus, in this example, stops 1060 may be provided to control the movement of the first and second lens barrels 1210 and 1220, respectively. The stopper 1060 may include a first stopper 1061 that limits a moving distance of the first lens barrel 1210, and a second stopper 1062 that limits a moving distance of the second lens barrel 1220. The first stopper 1061 and the second stopper 1062 may be separately provided, or may be an interconnection structure.

The stopper 1060 may include a first stopper 1061 and a second stopper 1062. The first frame 1061a and the second frame 1062a, which will be described below, may be integrally connected or may be separately provided. The first and second frames 1061a and 1062a may have buffer materials 1061d and 1062d in portions facing the first and second lens barrels 1210 and 1220 to absorb the impact of the first and second lens barrels 1210 and 1220 moving upward.

The first stopper 1061 may include a first frame 1061a, a first extension 1061b extending from the first frame 1061a in a direction perpendicular to the optical axis direction, and a first buffer material 1061c disposed in the first extension 1061 b. The first cushioning material 1061c may be fitted into a hole provided in the first extension 1061b to protrude from both sides of the first extension 1061b, or may be fixed to both sides of the first extension 1061b by bonding using an adhesive. The first frame 1061a may be mounted on a side wall and a wall on the other end of the housing 1010 to cover an upper portion of the first lens barrel 1210 in which the extension portion 1219 is provided. The first extension part 1061b and the first buffer material 1061c may be fitted between one side of the second lens barrel 1220 and the protrusion wall 1009. For example, the housing 1010 may be provided with an insertion groove 1011 into which the first frame 1061a and the first extension 1061b are fitted. The insertion groove 1011 may include a first insertion groove 1011a provided along an inner side of an upper edge of the housing 1010, and a second insertion groove 1011b extending downward from one end of the first insertion groove 1011a perpendicularly to the optical axis direction. The first frame 1061a may be mounted on the first insertion groove 1011a, and the first extended portion 1061b may be fitted to the second insertion groove 1011 b. Of course, the first frame 1061a may also be fixed to the case 1010 by bonding with an adhesive.

Since the first extension part 1061b and the first buffer material 1061c extend from the upper part to the lower part of the extension part 1229 of the second lens barrel 1220, a second space part 1221 may be provided in the upper part of the extension part 1229 of the second lens barrel 1220 for securing a space, and the second space part 1221 may be a space secured to allow the first extension part 1061b and the first buffer material 1061c to extend.

Accordingly, the first lens barrel 1210 may be controlled to move only between the other end of the housing 1010 and the first buffer material 1061c fitted to the rear of the protrusion wall 1009.

The second stopper 1062 may include a second frame 1062a, a second extension 1062b extending from the second frame 1062a in a direction perpendicular to the optical axis direction, and a second buffer material 1062c disposed in the second extension 1062 b. The second cushioning material 1062c may be fitted into holes provided in the second extension 1062b to protrude from both sides of the second extension 1062b, or may be fixed on both sides of the second extension 1062b by bonding using an adhesive. The second frame 1062a may be mounted on the upper portion of the housing 1010 and the protruding wall 1009 to cover the upper portion of the side of the second lens barrel 1220 where the extension 1229 is provided. The second extension 1062b and the second buffer material 1062c may be fitted between the other side of the first lens barrel 1210 and the other inner wall of the housing 1010. For example, the housing 1010 may be provided with an insertion groove 1012, and the second frame 1062a and the second extension portion 1062b are fitted into the insertion groove 1012. The insertion groove 1012 may include a first insertion groove 1012a provided along an inner side of an upper edge of the housing 1010, and a second insertion groove 1012b extending downward from one end of the first insertion groove 1012a in a direction perpendicular to the optical axis direction. The second frame 1062a may be mounted on the first insertion groove 1012a, and the second extension portion 1062b may be fitted to the second insertion groove 1012 b. Of course, the second frame 1062a may also be fixed to the case 1010 by bonding with an adhesive.

Since the second extension portion 1062b and the second buffer material 1062c extend downward from the upper portion of the extension portion 1219 of the first lens barrel 1210, a first space portion 1211 may be provided in the upper portion of the extension portion 1219 of the first lens barrel 1210 for securing a space, and the first space portion 1211 may be a space secured to allow the second extension portion 1062b and the second buffer material 1062c to extend.

Accordingly, the second lens barrel 1220 may be controlled to move only between the protrusion wall 1009 and the second buffer material 1062c fitted to the front of the other end of the housing 1010.

Referring to fig. 14, a mechanism for guiding the position at which the third lens barrel 1230 is fixed to the housing 1010 is shown.

For example, the case 1010 of the camera module 1000 may be provided with a buffer member 1050 for buffering the rotation holder 1120, and a buffer material 1053 may be provided in the extension portion 1052 of the buffer member 1050 to protrude in both directions of the optical axis. A protrusion wall 1009 may be included, which protrudes into the inner space and separates a space in which the first and second lens barrels 1210 and 1220 are disposed and a space in which the third lens barrel 1230 is disposed.

Accordingly, the third lens barrel 1230 may be fitted to the housing 1010 such that the protruding wall 1009 serves as an assembly reference surface and one side is supported by the buffering material 1053. Since the buffer material 1053 has an elastic force, the third lens barrel 1230 may be fitted between the buffer material 1053 and the protrusion wall 1009 in a slightly concave manner. Alternatively, the third lens barrel 1230 may be first assembled to the housing 1010, and then the buffer material 1053 of the buffer 1050 may be inserted to press the third lens barrel 1230. An adhesive may be injected between the third lens barrel 1230 and the sidewall or bottom of the housing 1010 so that they are bonded to each other.

Referring to fig. 15 and 16, another example of a mechanism in which one of the zoom lenses according to the example is accurately fixed in a predetermined position is shown.

In this example, since the third lens barrel 1230 is fixed to the housing 1010, bearings required to move the third lens barrel 1230 may not be required in principle. This example discloses a mechanism in which the third lens barrel 1230 is accurately set in a predetermined position in the housing 1010 using a ball member. After the third lens barrel 1230 is disposed in the housing 1010, an adhesive may be injected between the third lens barrel 1230 and a sidewall or a bottom of the housing 1010 so that they may be bonded to each other.

First, referring to fig. 15, the third lens barrel 1230 may be mounted with at least three ball members 1235 between the third lens barrel 1230 and the bottom of the housing 1010. Guide grooves 1234 and 1015 into which the ball members are inserted may be provided in portions of the third lens barrel 1230 and the housing 1010 that face each other, and these guide grooves may be provided individually for each ball member.

A pair of guide grooves 1234 and 1015 provided in the third lens barrel 1230 and the housing 1010, into which the ball members 1235 are respectively inserted, may be provided in the same shape as each other (the ball members may be point-contacted with the guide grooves of the third lens barrel 1230 and the housing 1010), and three guide grooves provided in the third lens barrel 1230 or the housing 1010 may be respectively provided in the shape shown in enlarged views (r, and r) of fig. 15. First, it may be a guide groove formed by cutting all corners of a triangular pyramid shape, may allow the ball member 1235 to contact only three surfaces of the drawing point, and the third lens barrel 1230 may be constrained in the optical axis (Z-axis) direction, the X-axis direction perpendicular to the optical axis direction, and the Y-axis direction perpendicular to the optical axis direction and the X-axis direction, may be a guide groove that appears to have a "V" -shaped groove (in this case, the bottom thereof may be cut), which is elongated in the optical axis direction, may allow the ball member 1235 to contact only both surfaces of the drawing point, and the third lens barrel 1230 may be restrained in the X-axis direction and the Y-axis direction, and the guiding groove in the optical axis direction may be a long and flat bottom, the ball member 1235 may be allowed to contact only one surface of the drawing point, and the third lens barrel 1230 may be restrained in the Y-axis direction. Accordingly, since the X-axis direction, the Y-axis direction, and the Z-axis direction of the third lens barrel 1230 may be restricted by the conditions of (r), and (c), the third lens barrel 1230 may be inserted into the housing 1010 to precisely position the third lens barrel 1230 by simply placing the ball members 1235 for inserting the third lens barrel 1230 into the guide grooves 1234 and 1015.

Next, referring to fig. 16, the third lens barrel 1230 may be mounted with at least three ball members 1235 between the third lens barrel 1230 and the bottom of the housing 1010. Guide grooves 1234 and 1015 into which ball members are inserted may be provided at portions of the third lens barrel 1230 and the housing 1010 facing each other, and these guide grooves 1234 and 1015 may be provided individually for each ball member.

A pair of guide grooves 1234 and 1015 provided in the third lens barrel 1230 and the housing 1010, into which the ball members 1235 are inserted, respectively, may be disposed differently from each other, and the other two pairs may be disposed in the same shape as each other. For example, among the next three pairs of guide grooves, the r may be a guide groove having a pair of side wall protrusions P, one side of which should protrude and the other side of which should be inserted such that the guide groove has a different shape.

Three guide grooves provided in the third lens barrel 1230 or the housing 1010, respectively, may be provided in the shapes (r, c, and c) shown in the enlarged view of fig. 16. First, it may have a shape in which one of the third lens barrel 1230 or the housing 1010 includes a "V" shaped groove (in this case, the bottom thereof may be cut) and side wall protrusions P protruding from both sides, may allow the ball member 1235 to contact four surfaces of a drawing point on one of the guide grooves and contact only two side walls of the "V" shaped groove on the other guide groove, thereby constraining the third lens barrel 1230 in the optical axis (Z axis) direction, the X axis direction perpendicular to the optical axis direction, and the Y axis direction perpendicular to the optical axis direction and the X axis direction. It may be a guide groove that appears to be long in the optical axis direction and has a "V" shaped groove (in this case, the bottom thereof may be cut), it may be possible to allow the ball member 1235 to contact only two surfaces of the drawing point and to constrain the third lens barrel 1230 in the X-axis direction and the Y-axis direction, and it may be a guide groove in the optical axis direction that has a long and flat bottom, it may be possible to allow the ball member 1235 to contact only one surface of the drawing point and to constrain the third lens barrel 1230 in the Y-axis direction. Accordingly, since the X-axis direction, the Y-axis direction, and the Z-axis direction of the third lens barrel 1230 may be restricted by the conditions of (r), and (c), the third lens barrel 1230 may be inserted into the housing 1010 to precisely position the third lens barrel 1230 by simply placing the ball members 1235 for inserting the third lens barrel 1230 into the guide grooves 1234 and 1015.

Fig. 17A to 21B are views showing a positional relationship between a magnet provided in a lens barrel and four hall sensors according to an example, and are graphs showing sensing values of the four hall sensors according to a movement of the lens barrel in the positional relationship. Fig. 17A to 21B include graphs showing respective sensing values of hall sensors moving according to an optical axis of a lens barrel and a sum of all the sensing values depending on an arrangement of the hall sensors in various examples, wherein the hall sensors are disposed to face the lens barrel (e.g., a first lens barrel or a second lens barrel) moving in an optical axis (Z-axis) direction

First, referring to fig. 17A, a lens barrel moving in an optical axis (Z-axis) direction, for example, the first lens barrel 1210 or the second lens barrel 1220, may move a considerable distance in the optical axis direction to perform a zoom function or an auto-focus function, and a position moved according to the distance may be sensed as accurately as possible with the hall sensor 1241c or 1243 c.

Therefore, in this example, a plurality of position detection sensors, for example, hall sensors 1241c or 1243c, are disposed to face the magnets 1241a or 1243a provided in the first lens barrel 1210 or the second lens barrel 1220. More specifically, a group including four position detection sensors (e.g., hall sensors 1241c or 1243c) may be provided.

In this example, the magnet may be a magnet for driving the lens barrel, or may be provided separately from the lens barrel for position sensing, regardless of driving. Hereinafter, even in the position sensing structure of the lens barrel according to another example, the magnet may be a magnet for driving the lens barrel, or may be provided separately from the lens barrel for position sensing regardless of driving.

In this example, the magnet 1241a or 1243a may be disposed to have an N pole and an S pole in a direction parallel to the optical axis (which is a moving direction of the first lens barrel 1210 or the second lens barrel 1220). For example, the magnet 1241a or 1243a may be a two-pole magnet magnetized to have an N pole and an S pole in the optical axis direction (in this case, there may be a "neutral region" between the N pole and the S pole). Alternatively, the magnets 1241a or 1243a may be magnetized to have one magnetic pole, respectively, so that two magnets having an N pole and an S pole may be arranged in order on the surface facing the coil 1241b or 1243b in the optical axis direction (in this case, the N pole and the S pole may be in close contact, or may be spaced apart to have a "space" between the N pole and the S pole). In all examples, the term "spacer region" may also be used as a term including "neutral region" and "spacer".

The magnet 1241a or 1243a may be disposed to face the coil 1241b or 1243 b.

In this case, in a non-driving state where no power is applied to the coil 1241b or 1243b, hall sensors (hall 1, hall 2, hall 3, and hall 4)1241c or 1243c facing the N pole and S pole of the magnet 1241a or 1243a, respectively, may be provided, and four hall sensors may be arranged side by side in the coil portion of the coil 1241b or 1243b in the moving direction of the magnet 1241a or 1243 a. The four hall sensors may be spaced apart by the same distance, or hall sensors (hall 1 to hall 4) arranged on the N-pole and S-pole of the magnet with respect to the neutral region of the magnet may be symmetrically disposed.

In this way, when the magnet 1241a or 1243a and the four hall sensors 1241c or 1243c are arranged and the magnet 1241a or 1243a moves in two directions (+ or-directions) at the respective positions, the four hall sensors (hall 1 to hall 4) can have respective sensing values according to the positions of the magnets, as shown in fig. 17B. Further, it can be seen that when these values are summed (hall 1+ hall 2+ hall 3+ hall 4), the total hall sense value (hall signal) can increase or decrease in substantial proportion to the movement of the magnet. Further, the total hall sensing values added over the moving range of the magnet may have different values. For example, it can be seen that the values of the "hall signal" in fig. 17B have different values in the range of-2 mm to 2 mm.

Accordingly, it may be difficult to sense the position of the magnet according to the relatively long distance movement using one or a relatively small number of hall sensors, but it can be seen that when a plurality of (e.g., four) hall sensors are used, the position can be more accurately sensed although the magnet may travel a relatively long distance.

Referring to fig. 18A and 19A, there is shown another example of changing only the number of hall sensors in the positional relationship shown in fig. 17A. Referring to fig. 18B and 19B, it can be seen that a sensing signal (hall signal), in which a signal of a hall sensor is sensed and thus a value is summed, may be increased or decreased in substantially proportion to the movement of the magnet.

In this case, in a non-driving state where no electric power is applied to the coil 1241b or 1243b, the magnet 1241a or 1243a and the coil 1241b or 1243b may face each other in a direction facing their respective centers, and the magnet 1241a or 1243a may be disposed to have substantially the same distance of the N pole and the S pole in the optical axis direction.

In other examples of fig. 18A and 19A, the hall sensors 1241c or 1243c may be provided inside the coils 1241b or 1243b, and the number of hall sensors may be different from that shown in fig. 17A.

For example, a plurality of position detection sensors (hall sensors) 1241c or 1243c may be provided to face the magnet 1241a or 1243a provided in the lens barrel (e.g., the first lens barrel 1210 or the second lens barrel 1220) that is movable in the optical axis direction, and for example, a position detection sensor 1241c or 1243c composed of a set of three position detection sensors (fig. 18A) or five position detection sensors (fig. 19A) may be provided. In another example, the magnet 1241a or 1243a may be disposed to have an N pole and an S pole in a direction parallel to the optical axis, which is a moving direction of the first lens barrel 1210 or the second lens barrel 1220. For example, the magnet 1241a or 1243a may be a two-pole magnet magnetized to have an N pole and an S pole in the optical axis direction (in this case, there may be a "neutral region" between the N pole and the S pole). Alternatively, the magnets 1241a or 1243a may be magnetized to have one magnetic pole, respectively, so that two magnets having N and S poles may be arranged in order on the surface facing the coil 1241b or 1243b in the optical axis direction (in this case, the N and S poles may be in close contact, or may be spaced apart to have a "space" between the N and S poles).

The magnet 1241a or 1243a may face one coil 1241b or 1243 b. In this case, position detection sensors (hall sensors) facing the N-pole, S-pole, and neutral regions (or "spaces") of the magnets 1241a or 1243a, respectively, may be provided.

For example, the example shown in fig. 18A may include three position detection sensors (hall sensors, hall 1 to hall 3)1241c or 1243c, and the three hall sensors may be arranged side by side inside the coiled portion of the coil 1241b or 1243b in the moving direction of the magnet 1241a or 1243 a. The three hall sensors may be spaced apart by the same distance. Alternatively, the hall sensors (hall 1 to hall 3) may be disposed to face the N pole, the neutral region (or "gap"), and the S pole of the magnet, respectively.

The example shown in fig. 19A may include five position detection sensors (hall sensors, hall 1 to hall 5)1241c or 1243c, and the five hall sensors may be arranged side by side inside the coiled portion of the coil 1241b or 1243b in the moving direction of the magnet 1241a or 1243 a. The five hall sensors may be spaced apart by the same distance. For example, in a non-driving state where no power is applied to the coil 1241b or 1243b, the hall sensors (hall 1 to hall 5) may be disposed to face the N pole, the neutral area (or "gap"), and the S pole of the magnet, respectively. For example, two hall sensors (hall 1 and hall 2) facing the N pole, one hall sensor (hall 3) facing the neutral area (or "gap"), and two hall sensors (hall 4 and hall 5) facing the S pole may be provided.

In this way, when the magnet 1241a or 1243a and the three or five hall sensors 1241c or 1243c are arranged and the magnet 1241a or 1243a moves in two directions (+ or-directions) at the respective positions, the three or five hall sensors may have respective sensing values according to the positions of the magnets, as shown in fig. 18B (three hall sensors) or fig. 19B (five hall sensors). It can be seen that when these values are summed (hall 1+ hall 2+ hall 3, or hall 1+ hall 2+ hall 3+ hall 4+ hall 5), the total hall sense value (hall signal) can increase or decrease in substantial proportion to the movement of the magnet.

The total hall sensing values summed over the range of movement of the magnet may have different values. For example, it can be seen that the values of the "hall signal" in fig. 18B and 19B have different values in the range of-2 mm to 2 mm.

Therefore, it may be difficult to sense the position of the magnet according to the relatively long distance movement using one hall sensor, but it can be seen that when two or more hall sensors are used in an even number (e.g., fig. 17A) or an odd number (e.g., fig. 18A and 19A), the position can be sensed more accurately although the magnet can travel a relatively long distance. In this case, in a non-driving state where no electric power is applied to the coil 1241b or 1243b, the magnet 1241a or 1243a and the coil 1241b or 1243b may face each other in a direction facing their respective centers, and the magnet 1241a or 1243a may be disposed to have substantially the same distance of the N pole and the S pole in the optical axis direction.

Next, referring to fig. 20A or 21A, a lens barrel (e.g., the first lens barrel 1210 or the second lens barrel 1220) moving in the optical axis direction may move a considerable distance in the optical axis direction to perform a zoom function or an auto-focus function, and a position moved according to the distance may be sensed as accurately as possible using a position detection sensor (hall sensor) 1241c or 1243 c.

Thus, in this example, a plurality of hall sensors 1241c or 1243c, for example, hall sensors composed of four or six hall sensors as a group, are provided to face the magnet 1241a or 1243a provided in the first lens barrel 1210 or the second lens barrel 1220.

The magnet in this example may be a magnet for driving the lens barrel, or may be provided separately from the lens barrel for position sensing.

In this example, the magnet 1241a or 1243a may be provided to have N poles and S poles alternately arranged in a direction parallel to the optical axis, which is a moving direction of the first lens barrel 1210 or the second lens barrel 1220. For example, the magnet may be provided with at least magnetic poles (N pole, S pole, and N pole) or magnetic poles (S pole, N pole, and S pole) in the optical axis direction. For example, the magnet 1241a or 1243a may be a three-pole magnet magnetized to have at least three polarities (including N pole and S pole) in the optical axis direction (in this case, there may be a "neutral region" between the N pole and the S pole). Alternatively, the magnets 1241a or 1243a may be magnetized to have one magnetic pole, respectively, so that at least three magnets having N and S poles may be sequentially arranged on a surface facing the coil 1241b or 1243b in the optical axis direction (in this case, the N and S poles may be in close contact, or may be spaced apart to have a "space" between the N and S poles).

The magnet 1241a or 1243a may be disposed to face the coil 1241b or 1243b, and the coil 1241b or 1243b is disposed as a group consisting of two coils (for example, the coil facing the magnet may be at least two). In this case, two coils 1241b or 1243b may be disposed to face the center of the magnetic pole magnetized to the same polarity on both sides.

Two or three hall sensors (hall 1 to hall 4 or hall 1 to hall 6)1241c or 1243c may be provided, which are respectively disposed to face two N poles or S poles on both sides of the magnet 1241a or 1243 a.

For example, as shown in fig. 20A, in a non-driving state where no power is applied to the coil 1241b or 1243b, when four hall sensors (hall 1 to hall 4) are provided, the four hall sensors may be arranged in total to face the magnet, two hall sensors being provided at each of two N poles provided on both sides with an S pole interposed therebetween, the two hall sensors being provided at left and right ends of the corresponding N pole, respectively.

Further, when six hall sensors (hall 1 to hall 6) are provided, as shown in fig. 21A, three hall sensors are provided at each of two N poles provided on both sides with an S pole interposed therebetween, wherein the three hall sensors are provided at the left end, the center, and the right end of the corresponding N pole, respectively, that is, three hall sensors are provided for each pole, and six hall sensors in total can be arranged.

The hall sensors (hall 1 to hall 4 or hall 1 to hall 6)1241c or 1243c may be arranged at equal intervals among groups of the same polarity at different positions facing the magnet 1241a or 1243 a. For example, as shown in fig. 20A or 21A, the arrangement of hall sensors provided inside the coils 1241b or 1243b on the left and right sides may be substantially the same.

In this manner, when the magnet 1241a or 1243a and the four or six hall sensors 1241c or 1243c are arranged and the magnet 1241a or 1243a moves in two directions (+ or-directions) at the respective positions, the four or six hall sensors may have respective sensing values according to the positions of the magnets, as shown in fig. 20B or 21B. Further, it can be seen that when these values are partially summed and subtracted, for example, the sum of the sensed values of all hall sensors of the other polarity facing the magnet 1241a or 1243a is subtracted from the sum of the sensed values of all hall sensors of either polarity facing the magnet 1241a or 1243a, for example, { (hall 1+ hall 2) - (hall 3+ hall 4), or (hall 1+ hall 2+ hall 3) - (hall 4+ hall 5+ hall 6)), the total hall sensing value (hall signal) may increase or decrease in substantial proportion to the movement of the magnet. Further, the total hall sensing values summed over the movement range of the magnet may have different values. For example, it can be seen that the values of the "hall signal" in fig. 20B and 21B have different values in the range of-2 to 2 mm.

Therefore, it may be difficult to sense the position of the magnet according to the relatively long distance movement using one hall sensor, but it can be seen that when four or six hall sensors are used, the position can be sensed more accurately although the magnet may travel a relatively long distance. Of course, the number of hall sensors is not limited thereto, and is applicable when two or more hall sensors are separately arranged to face the same polarity in both sides of the three-pole magnet. In this case, in a non-driving state where no power is applied to the coil 1241b or 1243b, the magnet 1241a or 1243a and the coil 1241b or 1243b may face each other in a direction facing their respective centers, and the magnet 1241a or 1243a may be disposed such that distances of at least two N poles (or S poles) facing the hall sensor in the optical axis direction are substantially the same.

Fig. 22 is a perspective view of a main board on which a coil and a component are mounted according to an example.

Referring to fig. 22, according to an example, coils 1141b, 1143b, and 1145b for driving the first driving part 1140 of the reflective module 1100 and a plurality of coils 1241b, 1243b, and 1245b for driving the second driving part 1240 of the lens module 1200 may be mounted on an inner surface of the main plate 1070. In addition, components 1178, gyro sensors 1079, and the like, such as passive elements, active elements, and the like, may be mounted on an outer surface of main board 1070. Thus, motherboard 1070 may be double-sided.

Specifically, the main plate 1070 may include a first side plate 1071 and a second side plate 1072 disposed substantially parallel to each other, and a bottom plate 1073 connecting the first side plate 1071 and the second side plate 1072 to each other. The terminal portion 1074 for external power and signal connection may be connected to any one of the first and second side plates 1071 and 1072 and the bottom plate 1073.

Some of the plurality of coils (e.g., the illustrated coil 1143b) for driving the first driving part 1140 of the reflection module 1100, and the sensor 1143c, and some of the plurality of coils (e.g., the illustrated coils 1241b and 1245b) for driving the second driving part 1240 of the lens module 1200, and the sensors 1241c and 1245c may be mounted on the first side plate 1071.

Some of a plurality of coils (e.g., the illustrated coil 1145b) for driving the first driving part 1140 of the reflection module 1100, and some of a plurality of coils (e.g., the illustrated coil 1243b) for driving the second driving part 1240 of the lens module 1200, and the sensor 1243c may be mounted on the second side plate 1072.

A coil 1141b for driving the first driving part 1140 of the reflective module 1100 and a sensor 1141c for sensing the position of the reflective module 1100 may be mounted on the bottom plate 1073.

Although the first side plate 1071 is shown in the drawings as having the components 1178, gyro sensors 1079, etc., such as various passive elements and active elements mounted thereon, the components 1178, gyro sensors 1079, etc., may be mounted on the second side plate 1072, or may be separated and mounted on the first and second side plates 1071 and 1072 as appropriate.

In addition, a plurality of coils 1141b, 1143b, 1145b, 1241b, 1243b, and 1245b and position detection sensors 1141c, 1143c, 1241c, 1243c, and 1245c, which may be mounted on the first side plate 1071, the second side plate 1072, and the bottom plate 1073, may be differently separated and mounted on each plate according to the design of the camera module.

Fig. 23 is a perspective view of a portable electronic device according to another example.

Referring to fig. 23, the portable electronic device 2 may be a portable electronic device such as a mobile communication terminal, a smart phone, a tablet PC, or the like, in which a plurality of camera modules 500 and 1000 are installed.

A plurality of camera modules 500 and 1000 may be installed in the portable electronic device 2.

At least one of the plurality of camera modules 500 and 1000 may be a camera module 1000 according to various examples described with reference to fig. 2 to 16.

For example, in the case of a portable electronic device including a dual camera module, at least one of the two camera modules may be provided as the camera module 1000 according to various examples.

By this example, the camera module and the portable electronic device including the camera module may have a simple structure and a reduced size while realizing functions such as an AF function, a zoom function, an OIS function, and the like. Furthermore, power consumption can be minimized.

The camera module may have a simple structure and a reduced size while implementing functions such as an AF function, a zoom function, an OIS function, and the like.

Further, various examples allow easy alignment in the optical axis direction even when a plurality of lens groups are provided.

Further, a stopper or a buffer may be provided so that neither the zoom lens nor the reflection module is separated from the optimum position.

In addition, in order to maximally express the performance of the zoom lens, the moving position of the zoom lens may be accurately measured by a plurality of hall sensors.

While the present disclosure includes particular examples, it will be apparent to those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be considered in a descriptive sense only and not for purposes of limitation. The description of features or aspects in each example is considered applicable to similar features or aspects in other examples. Suitable results may also be achieved if the described techniques are performed in a different order and/or if components in a described system, architecture, device, or circuit are combined in a different manner and/or replaced or supplemented by other components or their equivalents. Therefore, the scope of the present disclosure is defined not by the detailed description but by the claims and their equivalents, and all changes within the scope of the claims and their equivalents are to be construed as being included in the present disclosure.

Claims (20)

1. A camera module, comprising:

a housing;

a lens module disposed in an inner space of the housing and configured to be movable in an optical axis direction, and including at least one lens therein;

a magnet disposed in the lens module; and

position detection sensors configured to detect positions of the magnets, one or more of the position detection sensors being disposed to face a first polarity of the magnets, and one or more of the position detection sensors being disposed to face a second polarity of the magnets different from the first polarity.

2. The camera module according to claim 1, wherein the magnet is a two-pole magnet magnetized to have an N pole, a neutral region, and an S pole, or a magnet in which separate magnets having an N pole and an S pole are arranged adjacent to each other.

3. The camera module according to claim 2, wherein each of the position detection sensors is disposed to face only the N pole or the S pole of the magnet.

4. The camera module of claim 2, wherein the position detection sensor comprises:

A first position detection sensor disposed to face the N pole;

a second position detection sensor disposed to face the S pole; and

a third position detection sensor disposed to face a region between the N pole and the S pole.

5. The camera module according to claim 2, wherein the position detection sensors are spaced apart from each other at equal intervals in the optical axis direction.

6. The camera module of claim 2, further comprising:

a coil disposed in the housing and configured to face the magnet.

Wherein the position detection sensor is disposed inside a winding of the coil.

7. The camera module according to claim 2, wherein the position of the magnet is calculated based on a position value obtained by summing all sensed values of the position detection sensor.

8. The camera module of claim 7, wherein the position values are all different values within a range of movement of the magnet.

9. A camera module, comprising:

a housing;

a lens module disposed in an inner space of the housing and configured to be movable in an optical axis direction, and including at least one lens therein;

A magnet provided in the lens module and including at least one N pole and at least one S pole alternately arranged along the optical axis direction; and

position detection sensors configured to detect positions of the magnets, one or more of the position detection sensors being disposed to face a first pole of the magnets, and one or more of the position detection sensors being disposed to face a second pole of the magnets.

10. The camera module according to claim 9, wherein the magnet is a three-pole magnet magnetized to have at least three polarities including the at least one N pole and the at least one S pole, or a magnet in which at least three separate magnets each having an N pole and an S pole are arranged adjacent to each other.

11. The camera module of claim 9, wherein the first pole of the magnet has the same polarity as the second pole of the magnet, and

the number of position detection sensors disposed to face the first pole of the magnet is the same as the number of position detection sensors disposed to face the second pole of the magnet.

12. The camera module of claim 9, wherein the first pole of the magnet has the same polarity as the second pole of the magnet,

the magnet includes a third pole disposed between the first pole and the second pole in the optical axis direction, an

The first pole and the second pole are spaced apart from the third pole by an equal distance in the optical axis direction.

13. The camera module of claim 9, wherein the first pole of the magnet has the same polarity as the second pole of the magnet, and

the position detection sensors include at least four position detection sensors including:

a first position detection sensor disposed to face a first end of the first pole in the optical axis direction;

a second position detection sensor disposed to face a second end of the first pole in the optical axis direction;

a third position detection sensor disposed to face a first end of the second pole in the optical axis direction; and

a fourth position detection sensor disposed to face a second end of the second pole in the optical axis direction.

14. The camera module of claim 13, wherein the position detection sensor comprises:

a fifth position detection sensor provided between the first position detection sensor and the second position detection sensor in the optical axis direction; and

a sixth position detection sensor disposed between the third position detection sensor and the fourth position detection sensor in the optical axis direction.

15. The camera module of claim 9, wherein the first pole of the magnet has the same polarity as the second pole of the magnet, and

the position detection sensor includes:

a first group of position detection sensors spaced at equal intervals in the optical axis direction and disposed to face the first pole, an

A second group of position detection sensors spaced apart at equal intervals in the optical axis direction and disposed to face the second pole.

16. The camera module of claim 9, further comprising:

a first coil fixed to the housing and disposed in the housing to face the first pole of the magnet; and

a second coil fixed to the housing and disposed in the housing to face the second pole of the magnet,

Wherein the first pole of the magnet has the same polarity as the second pole of the magnet.

17. A camera module, comprising:

a housing;

a lens module including at least one lens and configured to move in an optical axis direction within the housing;

a magnet provided in the lens module and including at least two magnetic poles alternately arranged in the optical axis direction; and

and a position detection sensor including at least one position detection sensor disposed to face a first pole of the magnet and at least one position detection sensor disposed to face a second pole of the magnet.

18. The camera module of claim 17, wherein the first pole has a same polarity as the second pole,

the magnet includes a third pole having a different polarity than the first pole and the second pole, an

The third pole is disposed between the first pole and the second pole along the optical axis direction.

19. The camera module of claim 17, wherein the first pole has a polarity different from a polarity of the second pole.

20. The camera module according to claim 19, wherein the position detection sensor includes at least one position detection sensor provided in a neutral region between the first pole and the second pole in the optical axis direction.

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