KR20230033465A - A camera module and optical apparatus having the same - Google Patents

Abstract

A camera module according to an embodiment of the present invention comprises: a circuit board; an image sensor disposed on the circuit board; an actuator disposed on the circuit board; a lens barrel disposed on the actuator; a lens disposed within the lens barrel and disposed at a position corresponding to the image sensor; and an adhesive member disposed between the lens barrel and the actuator and allowing the lens barrel to be fixated to the actuator. The actuator includes a bobbin having a hole in which the lens barrel is accommodated. The lens barrel faces the inner peripheral surface of the hole of the bobbin and includes a first step portion at least partially in contact with the adhesive member. The first step portion includes: a first portion having a first inclination angle in the optical axis direction; and a second portion connected to the upper part of the first portion and having a second inclination angle different from the first inclination angle in the optical axis direction. The optical axis of the lens can be prevented from being twisted.

Description

Camera module and optical device including the same {A CAMERA MODULE AND OPTICAL APPARATUS HAVING THE SAME}

Embodiments relate to a camera module, and in particular, to a camera module having an improved lens barrel structure and an optical device including the same.

As the spread of various portable terminals is widely generalized and wireless Internet services are commercialized, consumers' demands related to portable terminals are also diversifying. Accordingly, various types of additional devices are being installed in portable terminals.

Among them, a typical camera module is capable of taking a picture or video of a subject, storing the image data, and then editing and transmitting the image data as needed.

Recently, the demand for small camera modules is increasing for various multimedia fields such as notebook-type personal computers, camera phones, PDAs, smart phones, and toys, and image input devices such as information terminals for surveillance cameras and video tape recorders. .

As the pixel size of the sensor applied to these camera modules is miniaturized and the height of the module is lowered, mechanical reliability of the camera module such as management of foreign matter inflow and tilt or shift of the optical axis of the lens is secured The development of a mount structure for this purpose is emerging as a very important topic.

The camera module in which the lens barrel and the bobbin are screwed together generates foreign matter due to friction between the male screw part and the female screw part during focusing adjustment work, and the foreign matter generated at this time can degrade image quality. Development of the module is in progress.

However, in the process of manufacturing a camera module having a screwless type lens barrel, when epoxy is used to assemble the lens barrel, the epoxy penetrated between the lens barrel and the bobbin continues to move downward and is transferred to the image area, resulting in defective foreign matter. this may cause

In addition, in a camera module including a screwless type lens barrel, reliability problems may occur depending on the amount of epoxy used to assemble the lens barrel.

For example, if the amount of the epoxy is less than the reference amount, the bonding force between the lens barrel and the bobbin is weak, and the lens barrel may be separated from the bobbin. Furthermore, if the amount of the epoxy is less than the reference amount, a problem in that accuracy of the moving position of the lens barrel may decrease during auto focusing or image stabilization may occur.

In addition, if the amount of the epoxy is greater than the reference amount, a problem of changing the resolving power of the lens may occur during the curing process of the epoxy. For example, there is a problem in that shrinkage occurs during the curing process of the epoxy, and the shape of the lens barrel changes due to the shrinkage. In addition, as the shape of the lens barrel changes, problems such as curvature of the lens or distortion of the assembly structure between the lens barrel and the lens may occur, resulting in distortion of the optical axis of the lens.

In an embodiment, it is intended to provide a camera module including a lens barrel having a screwless coupling structure and an optical device including the same.

In addition, in the embodiment, it is intended to provide a camera module that can easily check the amount of an adhesive member applied between the lens barrel and the bobbin, and an optical device including the same.

In addition, in the embodiment, it is intended to provide a camera module and an optical device including the camera module that can easily adjust the amount of an adhesive member applied between the lens barrel and the bobbin.

Technical problems to be solved in the embodiments are not limited to the above-mentioned technical problems, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

A camera module according to an embodiment includes a circuit board; an image sensor disposed on the circuit board; an actuator disposed on the circuit board; a lens barrel disposed on the actuator; a lens disposed within the lens barrel and disposed at a position corresponding to the image sensor; and an adhesive member disposed between the lens barrel and the actuator and fixing the lens barrel to the actuator, wherein the actuator includes a bobbin including a hole in which the lens barrel is accommodated, and the lens barrel A first stepped portion facing an inner circumferential surface of the hole of the bobbin, at least a portion of which contacts the adhesive member, wherein the first stepped portion has a first inclination angle in an optical axis direction; and a second portion connected to each other and having a second tilt angle different from the first tilt angle in an optical axis direction.

In addition, the average outer diameter of the first portion of the first stepped portion is greater than the average outer diameter of the second portion of the second stepped portion.

In addition, the outer diameters of each of the first portion and the second portion of the first stepped portion increase in an upward direction.

The bobbin may include an inner portion facing the first portion and the second portion of the first stepped portion, and the adhesive member may include an inner surface of the inner portion of the bobbin and the first stepped portion of the lens barrel. It is disposed between the outer surfaces of the parts.

In addition, the inner portion of the bobbin does not have a step.

In addition, the bobbin includes a second stepped portion formed on the inner portion, and the second stepped portion does not overlap the first stepped portion in a direction perpendicular to the optical axis direction.

In addition, the lowermost end of the second stepped portion is located higher than the uppermost end of the first stepped portion.

The lens barrel may include a first flange portion protruding outwardly perpendicular to the optical axis direction and facing the inner portion of the bobbin, and a lower end of the first portion of the first stepped portion may include a first flange portion facing the inner portion of the bobbin. It is connected to the upper surface of the flange part, and the adhesive member is disposed between the outer surface of the first flange part and the inner part of the barrel.

In addition, the lens barrel includes at least one protrusion formed on the first flange portion and protruding outwardly, and the bobbin includes a recessed portion formed on the inner portion and corresponding to the protrusion.

In addition, the protruding portion of the lens barrel is spaced apart from the depressed portion of the bobbin, and the adhesive member fills the depressed portion and covers upper, outer, and lower surfaces of the protruding portion.

The first stepped portion may include a third portion connected to an upper end of the second portion in an optical axis direction and having a third inclination angle different from the first and second inclination angles.

The lens may include a first lens overlapping at least a portion of each of the first to third portions of the first stepped portion in a direction perpendicular to the optical axis.

On the other hand, the camera module according to the embodiment includes a holder including a hole; a lens barrel accommodated in the hole of the holder and including a first stepped portion; and an adhesive member disposed between an outer surface of the stepped portion of the lens barrel and an inner surface of the holder, wherein the first stepped portion of the lens barrel is connected in an optical axis direction and has first to second inclination angles different from each other. It includes three stepped portions, and the adhesive member exposes an outer surface of the third stepped portion while covering outer surfaces of the first and second stepped portions.

Also, the holder includes a second stepped portion formed on an inner surface facing an outer surface of the lens barrel, and the second stepped portion does not overlap the first stepped portion in a direction perpendicular to an optical axis.

The lens barrel of the camera module in the embodiment includes a first stepped portion divided into a plurality of parts having different inclination angles. The first stepped portion is formed above the first flange portion of the lens barrel, and accordingly, the amount of the adhesive member formed between the lens barrel and the bobbin can be easily grasped and the amount of the adhesive member can be easily adjusted. let it do For example, in a camera module including a screwless type lens barrel as in the embodiment, a reliability problem of the camera module may occur depending on an amount of an adhesive member used to assemble the lens barrel. For example, if the amount of the adhesive member is less than the reference amount, the bonding force between the lens barrel and the bobbin is weak, and the lens barrel may be separated from the bobbin. Furthermore, if the amount of the adhesive member is less than the reference amount, the accuracy of the moving position of the lens barrel may decrease during auto focusing or image stabilization. In addition, if the amount of the adhesive member is greater than the reference amount, a problem of changing the resolving power of the lens may occur during the curing process of the epoxy constituting the adhesive member. For example, there is a problem in that shrinkage occurs during the curing process of the epoxy, and the shape of the lens barrel changes due to the shrinkage. In addition, as the shape of the lens barrel changes, problems such as curvature of the lens or distortion of the assembly structure between the lens barrel and the lens may occur, resulting in distortion of the optical axis of the lens.

Accordingly, in the embodiment, a first stepped portion is formed on the outer surface of the lens barrel to easily control the amount of the adhesive member while easily grasping the amount of the adhesive member applied between the lens barrel and the bobbin. do. Also, the first step portion may have a step difference. That is, the first stepped portion may include a plurality of stepped portions. For example, the first stepped portion may include a first portion, a second portion, and a third portion. The first part, the second part, and the third part may have different inclination angles in the optical axis direction. Accordingly, in the embodiment, the adhesive member covers only the first part, covers the first part and the second part, or covers the first part, the second part, and the third part. , While easily grasping the amount of the adhesive member applied between the lens barrel and the bobbin, the amount of the adhesive member can be easily adjusted.

In addition, the bobbin in the embodiment may include a second stepped portion formed on the inner portion.

The second stepped portion may enable confirmation and adjustment of an amount of an adhesive member applied between the lens barrel and the bobbin. For example, the lens barrel includes a first stepped portion divided into three stepped portions. Through this, in the embodiment, the application amount and confirmation of the adhesive member can be performed in three stages based on the three stepped portions. However, depending on the product, the application amount and confirmation of the adhesive member may need to be performed in 4 or more steps.

Through this, in the embodiment, the second stepped portion is formed on the bobbin. For example, the second stepped portion includes a first portion having a step difference with the inner portion and a second portion having a step difference with the first portion. In this case, the first portion of the second stepped portion may be positioned higher than the first stepped portion formed in the lens barrel. For example, a lowermost end of the first part of the second stepped part may be located higher than an uppermost end of a third part of the first stepped part of the lens barrel. To this end, it is possible to check and apply an additional adhesive member through the first portion of the second stepped portion.

Furthermore, when a portion of the adhesive member flows into the lens driving device due to an error in adjusting the amount of application of the adhesive member, normal driving of the lens barrel may be impossible. At this time, the second stepped portion of the bobbin includes a plurality of stepped portions, through which it is possible to check and adjust the application amount of the adhesive member, and at the same time to prevent the adhesive member from overflowing into the lens driving device. .

1 is a perspective view of a camera module according to an embodiment.
2 is an exploded perspective view of a camera module according to an embodiment.
3 is a cross-sectional view of the camera module of FIG. 1 in a direction AA'.
4 is an enlarged view of a partial area of FIG. 3 .
5 is a perspective view of a lens barrel according to an embodiment.
FIG. 6 is an enlarged view of an outer surface of the lens barrel of FIG. 5 .
7 is a perspective view of a lens driving device according to an embodiment.
Figure 8 is an enlarged view of the inner surface of the bobbin of Figure 7;
FIG. 9 is an enlarged view of a partial area of a cross-sectional view of the camera module of FIG. 1 in a direction AA'.
FIG. 10 is an enlarged view of a partial region of the cross-sectional view in the direction BB′ of FIG. 1 .
11 is a diagram for explaining a relationship between a first stepped portion of a lens barrel and a lens according to an exemplary embodiment.
12 is a view showing bonding force between a lens barrel and a bobbin according to an application amount of an adhesive member according to an embodiment.
13 and 14 show the degree of deformation of the lens barrel according to the application amount of the adhesive member according to the embodiment.
15 is a perspective view of a portable terminal according to an embodiment.
16 is a configuration diagram of the portable terminal shown in FIG. 15;

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

However, the technical idea of the present invention is not limited to some of the described embodiments, but may be implemented in a variety of different forms, and if it is within the scope of the technical idea of the present invention, one or more of the components among the embodiments can be selectively implemented. can be used by combining and substituting.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention, unless explicitly specifically defined and described, can be generally understood by those of ordinary skill in the art to which the present invention belongs. It can be interpreted as meaning, and commonly used terms, such as terms defined in a dictionary, can be interpreted in consideration of contextual meanings of related technologies.

Also, terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention. In this specification, the singular form may also include the plural form unless otherwise specified in the phrase, and when described as "at least one (or more than one) of A and (and) B and C", A, B, and C are combined. may include one or more of all possible combinations.

Also, terms such as first, second, A, B, (a), and (b) may be used to describe components of an embodiment of the present invention. These terms are only used to distinguish the component from other components, and the term is not limited to the nature, order, or order of the corresponding component. And, when a component is described as being 'connected', 'coupled' or 'connected' to another component, the component is not only directly connected to, combined with, or connected to the other component, but also with the component. It may also include the case of being 'connected', 'combined', or 'connected' due to another component between the other components.

In addition, when it is described as being formed or disposed on the "top (above) or bottom (bottom)" of each component, the top (top) or bottom (bottom) is not only a case where two components are in direct contact with each other, but also one A case in which another component above is formed or disposed between two components is also included. In addition, when expressed as "up (up) or down (down)", it may include the meaning of not only the upward direction but also the downward direction based on one component.

An optical axis direction used below may be defined as an optical axis direction of a lens coupled to a camera actuator and a camera module, and a vertical direction may be defined as a direction perpendicular to the optical axis.

The autofocus function used below is a function that automatically focuses on a subject by adjusting the distance to the image sensor by moving the lens in the direction of the optical axis according to the distance of the subject so that a clear image of the subject can be obtained on the image sensor. can be defined

Meanwhile, auto focus may correspond to auto focus (AF). In addition, CLAF (closed-loop auto focus) control is defined as real-time feedback control of the lens position by detecting the distance between the image sensor and the lens to improve the accuracy of focus adjustment. can do.

In addition, prior to the description of the embodiment of the invention, the first direction may mean the x-axis direction shown in the drawing, and the second direction may be a direction different from the first direction. For example, the second direction may mean a y-axis direction shown in the drawing as a direction perpendicular to the first direction. Also, the third direction may be a direction different from the first and second directions. For example, the third direction may refer to a z-axis direction shown in the drawing as a direction perpendicular to the first and second directions. Here, the third direction may mean an optical axis direction.

1 is a perspective view of a camera module according to an embodiment, FIG. 2 is an exploded perspective view of a camera module according to an embodiment, FIG. 3 is a cross-sectional view of the camera module of FIG. 1 in the direction A-A', and FIG. 4 is a part of FIG. It is an enlargement of the area.

1 to 4, the camera module 100 includes a lens 110, a lens barrel 120, a lens driving device 130, a filter 140, a holder 150, a circuit board 160, a reinforcement It may include a plate 170 , an image sensor 180 and an adhesive member 190 . Here, the camera module 100 may be expressed as a camera or a camera, and the holder 150 may be expressed as a sensor base. The lens driving device 130 may also be referred to as an actuator that drives a lens or a lens barrel.

In addition, although not shown in the drawing, the camera module in the embodiment may further include a blocking member (not shown) disposed on the filter 140 .

In addition, the camera module in the embodiment may further include an adhesive member (not shown) disposed between the holder 150 and the filter 140 .

In addition, the camera module in the embodiment may include a motion sensor (not shown), a control element (not shown), and a connector (not shown) disposed on the circuit board 160 .

The lens 110 or the lens barrel 120 may be mounted on the lens driving device 130 . Preferably, lens 110 may be disposed within lens barrel 120 . Also, the lens barrel 120 may be mounted on the lens driving device 130 . Preferably, the lens driving device 130 includes a bobbin (to be described later). Also, the lens barrel 120 may be coupled to the bobbin of the lens driving device 130 . To this end, an adhesive member 190 may be disposed between the outer surface of the lens barrel 120 and the inner surface of the bobbin. Also, the lens barrel 120 may be coupled to the bobbin of the lens driving device 130 through the adhesive member 190 .

The lens driving device 130 may drive the lens barrel 120 in which the lens 110 is accommodated.

The lens 110 may be an optical system in which three or more lenses are stacked. The lens 110 may be an optical system in which five or more lenses are stacked. The lens 110 may be an optical system in which eight or more lenses are stacked. At this time, although the lens 110 is illustrated as including 8 lenses on the drawing, it is not limited thereto. For example, the lens 110 may have a stacked structure of less than 8 sheets, and may have a stacked structure of 9 or more sheets. The lens 110 may include at least one plastic lens, or may include at least one glass lens and a plastic lens. In the lens 110 according to an embodiment of the present invention, there may be more plastic lenses than glass lenses, or two or more lenses. Here, the lens 110 may be laminated with plastic lenses or/and glass lens(s). Here, the plastic material is 5 times higher than the coefficient of thermal expansion (CTE) of the glass material, and the change value of the refractive index (|dN/Dt|) as a function of temperature is 10 times higher than the glass material. there is. Here, dN is the change value of the refractive index of the lens, and dT represents the change value of the temperature.

The camera module 100 may be any one of a camera module for AF (Auto Focus) and an Optical Image Stabilizer (OIS) camera module. A camera module for AF refers to one capable of performing only an auto focus function, and a camera module for OIS refers to one capable of performing an auto focus function and an OIS (Optical Image Stabilizer) function.

For example, the lens driving device 130 may be a lens driving device for AF or a lens driving device for OIS. Here, the meanings of "for AF" and "for OIS" are as described in the camera module for AF and the camera module for OIS. can be the same

For example, the lens driving device 130 of the camera module 100 may be a lens driving device for OIS.

The lens driving device 130 may include a housing 131 and a bobbin 132 disposed in the housing 131 and coupled to the lens barrel 120 .

In addition, although not specifically shown in the drawing, the lens driving device 130 includes a first coil (not shown) disposed on the bobbin 132 and a magnet disposed on the housing 131 and facing the first coil. (not shown). In addition, the lens driving device 130 includes at least one upper elastic member (not shown) coupled to the upper part of the housing 131 and the upper part of the bobbin 132, and the lower part of the bobbin 132 and the housing ( 131) may include at least one lower elastic member (not shown) coupled to the lower part.

In addition, the lens driving device 130 includes a second coil (not shown) disposed below the bobbin 132 or the housing 131, a driving substrate (not shown) disposed below the second coil, and the A base (not shown) disposed below the driving substrate may be included.

Meanwhile, the bobbin 132 may also be referred to as a 'holder' to which the lens barrel 120 is coupled.

In addition, the lens driving device 130 may include a cover member 133 coupled to the base and providing a space for accommodating elements of the lens driving device 130 together with the base.

In addition, the lens driving device 130 may further include a support member (not shown) electrically connecting the driving substrate and the upper elastic member and supporting the housing 131 with respect to the base. Each of the first coil and the second coil may be electrically connected to the driving substrate and may receive a driving signal (driving current) from the driving substrate.

For example, the upper elastic member may include a plurality of upper springs, the support member may include support members connected to the upper springs, and the first coil may be electrically connected to the driving substrate through the upper springs and the support member. can be connected The driving board may include a plurality of terminals, and some of the plurality of terminals may be electrically connected to each of the first coil and/or the second coil.

The lens driving device 130 according to the embodiment may move the bobbin 132 and the lens or lens barrel 120 coupled thereto in the direction of the optical axis by electromagnetic force generated by the interaction between the first coil and the magnet. And, the displacement of the bobbin 132, the lens barrel 120 coupled to the bobbin 132, and the lens 110 coupled to the lens barrel 120 in the optical axis direction is controlled by the electromagnetic force, so that AF Driving can be implemented.

In addition, in the lens driving device 130, the housing 131 may be moved in a direction perpendicular to the optical axis by the electromagnetic force generated by the interaction between the second coil and the magnet, and thus, hand shake correction or OIS driving may be implemented.

In addition, for AF feedback driving, the lens driving device 130 of the camera module 100 includes a sensing magnet (not shown) disposed on the bobbin 132 and an AF position sensor (eg, disposed on the housing 131). , a hall sensor (not shown) may be further included. In addition, the lens driving device 130 may further include a circuit board (not shown) disposed on the housing or/and the base and on which the AF position sensor is disposed or mounted. In another embodiment, the AF position sensor may be disposed on the bobbin, and the sensing magnet may be disposed on the housing. Also, the lens driving device 130 may further include a balancing magnet disposed on the bobbin 132 to correspond to the sensing magnet.

The AF position sensor may output an output signal according to a result of sensing the strength of the magnetic field of the sensing magnet according to the movement of the bobbin 132 . Through the upper elastic member (or the lower elastic member) and/or the supporting member, the AF position sensor may be electrically connected to the driving substrate. The driving substrate may provide a driving signal to the AF position sensor, and an output of the AF position sensor may be transmitted to the driving substrate.

In another embodiment, the lens driving device 130 may be a lens driving device for AF. The lens driving device for AF includes a housing, a bobbin disposed inside the housing, a coil disposed on the bobbin, and a magnet disposed on the housing. , at least one elastic member coupled to the bobbin and the housing, and a base disposed below the bobbin (or/and housing).

For example, the elastic member may include the above-described upper elastic member and lower elastic member.

A driving signal (eg, driving current) may be provided to the coil, and the bobbin may be moved in an optical axis direction by electromagnetic force generated by an interaction between the coil and the magnet.

In another embodiment, the coil may be disposed in the housing and the magnet may be disposed in the bobbin.

In addition, for AF feedback driving, the AF lens driving device includes a sensing magnet disposed on the bobbin, an AF position sensor (eg, a hall sensor) disposed on the housing, and an AF position sensor disposed on the housing or And/or may further include a circuit board disposed or mounted on the base In another embodiment, the AF position sensor may be disposed on the bobbin and the sensing magnet may be disposed on the housing.

A camera module according to another embodiment may include a housing coupled to the lens or lens barrel 120 instead of the lens driving device 130 of FIG. 1 and fixed to the lens or lens barrel 120, and the housing may include a holder. It may be coupled or attached to the upper surface of (150). The housing attached or fixed to the holder 150 may not be moved, and the position of the housing may be fixed while attached to the holder 150 .

The circuit board may be electrically connected to the coil and the AF position sensor, a driving signal may be provided to each of the coil and the AF position sensor through the circuit board, and an output of the AF position sensor may be transmitted to the circuit board.

The holder 150 may be disposed below the lens driving device 130 .

The filter 140 is mounted on the holder 150, and the holder 150 may have a seating portion on which the filter 140 is seated.

At this time, an adhesive member (not shown) may be applied between the holder 150 and the filter 140, and through this, the holder 150 may be coupled or attached to the lens driving device 130. For example, the adhesive member may be disposed between the lower surface of the base constituting the lens driving device 130 and the upper surface of the holder 150 to adhere them to each other. The adhesive member disposed between the holder 150 and the lens driving device 130 may serve to prevent foreign substances from entering the lens driving device 130 . For example, the adhesive member may be an epoxy, a thermosetting adhesive, or an ultraviolet curable adhesive.

The filter 140 may be disposed within the seating portion of the holder 150 . For example, the mounting portion of the holder 150 may be a protruding portion protruding from the upper surface of the holder 150 . For example, the mounting portion of the holder 150 may be in the form of a recess, a cavity, or a hole recessed from the upper surface of the holder 150 .

The mounting portion of the holder 150 may serve to prevent contact or collision of the lower end of the lens 110 or the lens barrel 120 with the filter 140 .

At this time, the protrusion of the holder 150 may protrude along the side of the filter 140 in the optical axis direction. For example, the protrusion of the holder 150 may be disposed around the side of the filter 140 to surround the side of the filter 140 .

An inner surface of the protruding portion of the holder 150 may be provided to face a side surface of the filter 140, and both may be spaced apart from each other. This is to secure a processing tolerance for easily mounting the filter 140 inside the mounting portion of the holder 150 .

In addition, the upper surface of the protruding part of the holder 150 may be located higher than the upper surface of the filter 140 in the optical axis direction. This means that when the lens 110 or the lens barrel 120 is mounted on the lens driving device 130 and moves in the direction of the optical axis or moves toward the filter 140 by an external impact, the lens 110 or the lens barrel This is to prevent the lower end of the filter 120 from directly colliding with the filter 140.

The shape of the protruding portion of the seating portion viewed from the upper side may match the shape of the filter 140, but is not limited thereto. In another embodiment, the shape of the protruding portion of the seating portion may be similar to or different from the shape of the filter 140 .

An opening may be formed in the holder 150 at a portion where the filter 140 is mounted or disposed so that light passing through the filter 140 may be incident to the image sensor 180 .

For example, the opening may pass through the holder 150 in the optical axis direction, and may be expressed as a “through hole” instead.

For example, the opening may pass through the center of the holder 150 and may be provided in the seating portion, and the area of the opening may be smaller than that of the filter 140 .

The holder 150 is disposed on the circuit board 160 and may accommodate the filter 140 therein. The holder 150 may support the lens driving device 130 located on the upper side. A lower surface of the base of the lens driving device 130 may be disposed on an upper surface of the holder 150 .

For example, the lower surface of the base of the lens driving device 130 may contact the upper surface of the holder 150 and may be supported by the upper surface of the holder 150 .

For example, the filter 140 may be disposed within the seating portion of the holder 150 . The filter 140 may serve to block light of a specific frequency band from light passing through the lens barrel 120 from being incident to the image sensor 180 . For example, the filter 140 may be an infrared cut filter, but is not limited thereto. For example, the filter 140 may be disposed parallel to an x-y plane perpendicular to the optical axis OA.

The circuit board 160 may be disposed under the holder 150 , and the holder 150 may be disposed on the upper surface of the circuit board 160 .

The holder 150 may be attached or fixed to the upper surface of the circuit board 160 by an adhesive member such as epoxy, thermosetting adhesive, or UV curable adhesive. In this case, the adhesive member may be disposed between the lower surface of the holder 150 and the upper surface of the circuit board 160 .

The circuit board 160 is the opening of the holder 150

A cavity 161 corresponding to may be provided. The cavity 161 of the circuit board 160 may have a through hole shape penetrating the circuit board 160 in an optical axis direction.

An image sensor 180 may be disposed in the cavity 161 of the circuit board 160 .

The reinforcing plate 170 may be disposed below the circuit board 160, correspond to the cavity 161 of the circuit board 160, and may include a protrusion 171 for mounting the image sensor 180 thereon.

The protrusion 171 may protrude from one area of the upper surface of the reinforcing plate 170 in the optical axis direction. The image sensor 180 may be disposed on the upper surface of the protrusion 171 and may be exposed through the cavity 161 of the circuit board 160 .

The image sensor 180 disposed on the upper surface of the protrusion 171 of the reinforcing plate 170 may be electrically connected to the circuit board 160 through the wire 21 . For example, the wire 21 may connect the terminal 181 of the image sensor 180 and the terminal 162 of the circuit board 160 to each other.

The reinforcing plate 170 is a plate-like member having a predetermined thickness and hardness, and can stably support the image sensor 180 and prevent damage to the image sensor due to external impact or contact.

In addition, the reinforcing plate 170 may enhance a heat dissipation effect of dissipating heat generated from the image sensor to the outside.

For example, the reinforcing plate 170 may be formed of a metal material having high thermal conductivity, such as SUS or aluminum, but is not limited thereto. In another embodiment, the reinforcing plate 170 may be formed of glass epoxy, plastic, or synthetic resin.

In addition, the reinforcing plate 170 may serve as a ground to protect the camera module from ESD (Electrostatic Discharge Protection) by being electrically connected to the ground terminal of the circuit board 160 .

The image sensor 180 may be a part where light passing through the filter 140 is incident and an image including the light is formed.

The circuit board 160 may include various circuits, elements, and controllers to convert an image formed by the image sensor 180 into an electrical signal and transmit the converted electrical signal to an external device. A circuit pattern electrically connected to the image sensor and various elements may be formed on the circuit board 160 .

The holder 150 may be replaced with the first holder, and the circuit board 160 may be replaced with the second holder.

The image sensor 180 may receive an image included in light incident through the lens driving device 130 and convert the received image into an electrical signal.

The filter 140 and the image sensor 180 may be spaced apart from each other so as to face each other in the optical axis OA direction or in the first direction.

Meanwhile, a blocking member (not shown) may be disposed on the upper surface of the filter 140 . The blocking member may be expressed as a “masking unit” instead.

For example, the blocking member may be disposed on an edge area of the upper surface of the filter 140, and at least a portion of the light incident toward the edge area of the filter 140 passes through the lens 110 or the lens barrel 120. It may serve to block passage through the filter 140 . For example, the blocking member may be coupled or attached to the upper surface of the filter 140 .

For example, the filter 140 may be formed in a quadrangular shape when viewed in the optical axis direction, and the blocking member may be formed symmetrically with respect to the filter 140 along each side of the upper surface of the filter 140 .

At this time, the blocking member may be formed to have a constant width on each side of the upper surface of the filter 140 .

The blocking member may be formed of an opaque material. For example, the blocking member may be provided with an opaque adhesive material applied to the filter 140 or may be provided in the form of a film attached to the filter 140 .

The filter 140 and the image sensor 180 may be disposed to face each other in the direction of the optical axis, and the blocking member may be disposed at least partially with the terminal 162 and/or the wire 21 disposed on the circuit board 160 in the direction of the optical axis. may overlap.

The wire 21 and the terminal 162 may be formed of a conductive material such as gold, silver, copper, or a copper alloy, and the conductive material may have a property of reflecting light. Light passing through the filter 140 may be reflected by the terminal 162 and the wire 21 of the circuit board 160, and an instantaneous flash, that is, a flare phenomenon may occur due to the reflected light, , This flare phenomenon may distort an image formed on the image sensor 180 or degrade image quality.

Since the blocking member is disposed so as to overlap at least a portion of the terminal 162 and/or the wire 21 in the optical axis direction, among the light passing through the lens 110 or the lens barrel 120, the terminal 162 of the circuit board 160 ), or/and light directed to the wire 21 may be blocked to prevent the above-described flare phenomenon, and accordingly, an image formed on the image sensor 180 may be prevented from being distorted or deteriorating in image quality.

Meanwhile, a motion sensor (not shown) is mounted or disposed on the circuit board 160, and the motion sensor may be electrically connected to a control element (not shown) through a circuit pattern provided on the circuit board 160.

The motion sensor outputs rotational angular velocity information caused by the movement of the camera module 100 . The motion sensor may be implemented as a 2-axis or 3-axis gyro sensor or an angular velocity sensor. The control element is mounted or disposed on the circuit board 160 .

The circuit board 160 may be electrically connected to the lens driving device 130 . For example, the circuit board 160 may be electrically connected to the driving board of the lens driving device 130 .

For example, a driving signal may be provided to each of the first coil and the second coil of the lens driving device 130 through the circuit board 160, and the driving signal may be provided to the AF position sensor (or OIS position sensor). . Also, an output of the AF position sensor (or OIS position sensor) may be transmitted to the circuit board 160 .

The connector 190 is electrically connected to the circuit board 160 and may include a port to be electrically connected to an external device.

A first adhesive member 175 may be disposed between the lower surface of the image sensor 180 and the reinforcing plate 170, and the image sensor 180 is placed on the reinforcing plate 170 by the first adhesive member 175. It can be attached or fixed.

At this time, the reinforcing plate 170 may be divided into a plurality of areas. For example, the reinforcing plate 170 may include a first area S1 and a second area S2. The first area S1 may be an area overlapping the image sensor 180 in the optical axis direction OA. The first area S1 may be an area overlapping the cavity 161 of the circuit board 160 in the optical axis direction OA. The first area S1 may be an area to which the image sensor 180 is attached. The second area S2 may be an area where the second adhesive member 165 is disposed. The second area S2 may be an area overlapping the circuit board 160 in the optical axis direction OA.

Also, the protrusion 171 is located in the first area S1 of the reinforcing plate 170 . In this case, the reinforcing plate 170 and the protrusion 171 may be a single plate integrally formed with each other.

The image sensor 180 may be attached or fixed to the upper surface of the protruding part 171 . For example, at least a part of the lower surface of the image sensor 180 may directly contact the upper surface of the protruding part 171 . That is, in the embodiment, the first adhesive member 1750 may be selectively formed in an area where the protrusion 171 is not formed in the first area S1. Accordingly, at least a first portion of the image sensor 180 may directly contact the protrusion 171 and at least a second portion may directly contact the first adhesive member 175 . That is, the second part of the image sensor 180 may be attached or fixed to the first adhesive member 175 while the first part is supported by the protrusion of the reinforcing plate 170 . Accordingly, in the embodiment, at least a portion of the image sensor 180 directly contacts the protrusion 171 of the reinforcing plate 170, thereby minimizing the bending of the image sensor 180. In addition, in the embodiment, at least a portion of the image sensor 180 directly contacts the protruding portion of the reinforcing plate 170, so that heat generated from the image sensor 180 can be efficiently transferred to the outside.

Accordingly, the area of the image sensor 180 in the embodiment may be larger than that of the first adhesive member 175 . That is, only a portion of the area of the image sensor 180 may contact the first adhesive member 1750 . That is, in the first embodiment, the first portion of the lower surface of the image sensor 180 is in contact with the protrusion 171 of the reinforcing plate 170, and the second portion other than the first portion is in contact with the first adhesive member. (1750) can be contacted.

The first adhesive member 175 may be an epoxy, a thermosetting adhesive, an ultraviolet curable adhesive, or an adhesive film, but is not limited thereto.

In addition, a second adhesive member 165 may be disposed between the lower surface of the circuit board 160 and the upper surface of the second area S2 of the reinforcing plate 170, and the second adhesive member 165 may adhere to the circuit board. 160 may be attached or secured to stiffening plate 170 . For example, the second adhesive member 165 may be an epoxy, a thermosetting adhesive, an ultraviolet curable adhesive, or an adhesive film, but is not limited thereto.

Meanwhile, an area of an upper surface of the protrusion 171 may be smaller than an area of a lower surface of the image sensor 180 . For example, only the first portion of the lower surface of the image sensor 180 may contact the protrusion 171 . Accordingly, the area of the upper surface of the protrusion 171 is smaller than the area of the lower surface of the image sensor 180 .

Meanwhile, the first height H1 from the upper surface of the second region S2 of the reinforcing plate 170 to the upper surface of the protrusion 171 and the second region of the reinforcing plate 170 from the lower surface of the reinforcing plate 170 ( The ratio (H1:H2) of the second height H2 to the upper surface of S2) may be 1:0.67 to 1:2.1. In addition, when the value obtained by dividing the second height by the first height (H2/H1) is less than 0.67, the reinforcing plate 170 is easily bent or deformed to such an extent that it cannot support the circuit board 160.

In addition, when the value obtained by dividing the second height by the first height (H2/H1) exceeds 2.1, the protruding height of the protruding portion 171 is insignificant and thus the flatness of the reinforcing plate 170 cannot be improved, and the image sensor The effect of reducing the step in the optical axis direction between the upper surface of the circuit board 180 and the upper surface of the circuit board 160 is reduced, so that reliability of wire bonding between the two cannot be secured.

For example, H1 may be 80 [μm] to 150 [μm], and H2 may be 100 [μm] to 170 [μm], but is not limited thereto.

Meanwhile, the height of the upper surface of the protrusion 171 of the reinforcing plate 170 relative to the lower surface of the reinforcing plate 170 may be lower than the height of the upper surface of the circuit board 160 disposed on the reinforcing plate 170 . For example, the reinforcing plate 170 may include a first area S1 and a second area S2, the first area S1 may be an area to which the image sensor 180 is attached, and the second area (S2) may be an area where the circuit board 160 is attached.

In addition, the first area S1 includes a 1-1 area S1-1 where the first adhesive member 175 is disposed and a 1-2 area S1-2 where the protrusion 171 is disposed. can include Also, the 1-1 area S1-1 may have the same height as the second area S2.

The first area S1 of the reinforcing plate 170 may include a protruding portion 171 protruding from the lower surface of the reinforcing plate toward the upper surface of the reinforcing plate based on the 1-1st area S1-1, , The image sensor 180 may be disposed on the top surface of the protrusion 171 .

For example, the 1-2 area S1-2 of the first area S1 of the reinforcing plate 170 is larger than the 1-1 area S1-1 and the second area S2 of the reinforcing plate 170. A protruding portion 171 may be included.

The thickness T1 of the 1-2 region S1-2 of the reinforcing plate 170 is greater than the thickness T2 of the 1-1 region S1-1 and the second region S2 (T1> T2). Also, since T1 > T2, distortion of the upper surface of the protruding portion 171 of the reinforcing plate 170 can be suppressed, and flatness of the upper surface of the protruding portion 171 can be improved. Due to this, in the embodiment, the reliability of the image sensor 180 disposed on the upper surface of the protrusion 171 may be improved, and the optical performance of the camera module may be improved.

Since the second area S2 of the reinforcing plate 170 has a constant thickness, the embodiment may not be affected by the overall height of the camera module. In addition, since the image sensor 180 is disposed on the top surface of the protrusion 171 and directly contacts the protrusion, the height difference between the top surface of the circuit board 160 and the top surface of the image sensor 180 is reduced, thereby reducing the circuit board ( 160) and the image sensor 180, the length of the wire is shortened, thereby improving the reliability of wire bonding.

The distance D1 between the side surface of the protrusion 171 of the reinforcing plate 170 and the side surface of the cavity of the circuit board may be 100 [μm] to 250 [μm]. When D1 is less than 100 [μm], the attachment tolerance for attaching the circuit board 160 to the reinforcing plate 170 becomes small, so that the cavity 161 of the circuit board 160 and the protrusion 171 of the reinforcing plate 170 Misalignment may occur between the circuit boards 160 and the circuit board 160 may be damaged due to a collision between the circuit board 160 and the protruding portion 171 .

When D1 exceeds 250 [μm], the separation distance between the image sensor and the circuit board increases, and reliability of wire bonding may deteriorate.

Meanwhile, in the embodiment, the protrusions 171 of the reinforcing plate 170 are spaced apart from each other with the 1-1 area S1-1 interposed therebetween in the first area S1 of the reinforcing plate 170. It may include protrusions of.

Meanwhile, in the embodiment, the lens barrel 120 in which the lens 110 is accommodated and the bobbin 132 of the lens driving device 130 may be coupled without a thread. Recently, according to the trend of requiring a high-performance camera module, an error range of optical axis alignment is more strictly required, so that the screw-less coupling method may be more efficient than the screw-thread coupling method.

In this non-thread coupling method, after inserting the lens barrel 120 into the hollow of the bobbin 132 from the upper or lower side, the lens barrel 120 is attached to the bobbin 132 using an adhesive member 190. can be fixed. That is, the bobbin 132 and the lens barrel 120 may be firmly fixed by applying the adhesive member 190 between the inner surface of the bobbin 132 and the outer surface of the lens barrel 120 .

In this case, the adhesive member 190 may be implemented with thermosetting epoxy or UV epoxy, and may be cured by exposure to heat or UV. However, when the adhesive member 190 is made of thermosetting epoxy, it may be cured by moving the bobbin 132 and the lens barrel 120 to an oven or directly applying heat. In addition, when the adhesive member 190 is implemented with UV (ultraviolet ray) epoxy, it may be cured by applying ultraviolet rays to the adhesive member 190 . In addition, the adhesive member 190 may be implemented with an epoxy capable of both thermal curing and ultraviolet curing, and may be an epoxy that can be cured by selecting any one of the two. The adhesive member 190 is not limited to epoxy, and any adhesive material capable of fixing the lens barrel 120 to the bobbin 132 may be substituted.

Hereinafter, the lens barrel 120, the bobbin 132, and the coupling structure therebetween according to the embodiment will be described in detail.

5 is a perspective view of a lens barrel according to an exemplary embodiment, and FIG. 6 is an enlarged view of an outer surface of the lens barrel of FIG. 5 .

Referring to FIGS. 5 and 6 , the lens barrel 120 according to the embodiment may include an opening 121 penetrating in an optical axis direction. The opening 121 may expose the lens 110 accommodated inside the lens barrel 120 .

The lens barrel 120 may include a side portion. The side surfaces of the lens barrel 120 may have different inclination angles for each area. For example, the lens barrel 120 may have an outer diameter corresponding to that of the lens 110 accommodated therein. However, the lens barrel 120 in the embodiment may include a portion having an outer diameter for coupling between the lens barrel 120 and the bobbin 132 regardless of the outer diameter of the lens 110 accommodated therein. there is.

For example, the lens barrel 120 may include a first flange portion 122 .

The first flange portion 122 may protrude outward from an outer surface of the lens barrel 120 . The first flange portion 122 may refer to a portion having the largest outer diameter in the entire area of the lens barrel 120 . The first flange portion 122 may function as a stopper to limit downward movement of the lens barrel 120 when the lens barrel 120 is assembled to the bobbin 132 . For example, when the bobbin 132 and the lens barrel 120 are coupled, the lens barrel 120 may be introduced into the upper end of the bobbin 132 and move downward. At this time, the first flange portion 122 may limit the downward movement of the lens barrel 120 within the bobbin 132 . For example, the bobbin 132 includes a second flange portion (described later) corresponding to the first flange portion 122 of the lens barrel 120 . In addition, when the lens barrel 120 moves downward at the maximum within the bobbin 132, the first flange portion 122 of the lens barrel 120 is connected to the second flange portion of the bobbin 132. contact, and thus movement in the downward direction may be limited.

However, in the embodiment, the outer surface of the lens barrel 120 and the inner surface of the bobbin 132 do not directly contact each other. For example, a contact surface directly contacting each other is not included between the outer surface of the lens barrel 120 and the inner surface of the bobbin 132 . For example, an air gap of a predetermined width may be formed between an outer surface of the lens barrel 120 and an inner surface of the bobbin 132, and the adhesive member 190 may be formed to fill the air gap. Accordingly, the first flange portion 122 of the lens barrel 120 may not directly contact the second flange portion of the bobbin 132 .

Meanwhile, in an embodiment, a protrusion 122-1 may be formed on the first flange portion 122 of the lens barrel 120. The protrusion 122 - 1 may protrude outward from an outer surface of the first flange portion 122 of the lens barrel 120 . A plurality of protrusions 122-1 may be formed on the outer surface of the first flange portion 122. For example, the protrusions 122-1 may be formed facing each other in a first direction (eg, an x-axis direction) perpendicular to the optical axis, centering on the optical axis. For example, the protrusions 122-1 may be formed to face each other in a second direction (eg, a y-axis direction) perpendicular to the optical axis and the first direction, with the optical axis as the center.

The protrusion 122 - 1 may support the stopper function of the first flange portion 122 . For example, when assembling the lens barrel 120 to the bobbin 132, the protruding portion 122-1 is the bobbin when the lens barrel 120 moves downward to the maximum within the bobbin 132. It is accommodated in the recessed portion (to be described later) of 132 and, together with the first flange portion 122, can limit the downward movement of the lens barrel 120.

Furthermore, the protruding portion 122-1 may improve coupling force between the lens barrel 120 and the bobbin 132. For example, the protrusion 122 - 1 may increase a contact area with the adhesive member 190 formed between the lens barrel 120 and the bobbin 132 . For example, the adhesive member 190 fills the inside of the concave portion 132-4 of the bobbin 132, and the protruding portion 122-1 of the first flange portion 122 of the lens barrel 120. can be formed by enclosing The protrusion 122 - 1 increases a contact area between the lens barrel 120 and the adhesive member 190 so that the lens barrel 120 can be firmly coupled to the bobbin 132 . For example, the adhesive member 190 may be formed to surround the lower surface, the side surface, and the upper surface of the protruding portion 122-1. Accordingly, the contact area between the adhesive member 190 and the lens barrel 120 is increased compared to the comparative example not including the protruding portion 122-1, and the lens by the adhesive member 190 accordingly. The bonding force between the barrel 120 and the bobbin 132 is improved.

Meanwhile, different indicators (not shown) may be imprinted on each of the plurality of protrusions 122-1. For example, different characters may be imprinted on the plurality of protrusions 122-1. Accordingly, in the embodiment, when the bobbin 132 and the lens barrel 120 are coupled, the coupled position of the lens barrel 120 can be accurately recognized, and accordingly, the bobbin 132 and the lens barrel 120 can improve the bonding fairness of

The lens barrel 120 has a lower end 123 positioned below the first flange part 122 and an upper side of the first flange part 122 around the first flange part 122. An upper portion 124 may be included.

The lower end 123 of the lens barrel 120 may have an outer diameter corresponding to the outer diameter of the lens 110 accommodated in the accommodating part corresponding to the lower end 123 of the lens barrel 120 .

Also, the upper end 124 of the lens barrel 120 may have an outer diameter corresponding to the outer diameter of the lens 110 accommodated in the accommodating part corresponding to the upper end 124 of the lens barrel 120 .

At this time, each outer surface of the upper end 124 and the lower end 123 of the lens barrel 120 may have a predetermined inclination angle in the optical axis direction, but is not limited thereto.

An outer diameter of the upper end 124 of the lens barrel 120 may be smaller than an outer diameter of the first flange part 122 . Also, the outer diameter of the upper end 124 of the lens barrel 120 may be larger than the outer diameter of the lower end 123 of the lens barrel 120 . Also, the outer diameter of the lower end 123 of the lens barrel 120 may be smaller than the respective outer diameters of the first flange part 122 and the lower end 123 .

Meanwhile, in an embodiment, a first stepped portion 125 may be formed between the first flange portion 122 and the upper end portion 124 of the lens barrel 120 .

The first stepped portion 125 may be formed between the first flange portion 122 and the upper end portion 124 of the lens barrel 120 and may have a predetermined inclination angle in an optical axis direction. For example, an outer surface of the first stepped portion 125 may have a predetermined inclination angle in the optical axis direction. At this time, the outer surface of the first stepped portion 125 may include a first portion 125-1 having a first inclination angle and a second portion 125-2 having a second inclination angle different from the first inclination angle. can Furthermore, the outer surface of the first stepped portion 125 in the embodiment may include a third portion 125-3 having a third inclination angle different from the second inclination angle.

In an embodiment, the lens barrel 120 includes a first stepped portion 125 divided into a plurality of parts having different inclination angles.

The first stepped portion 125 is formed on the upper side of the first flange portion 122 of the lens barrel 120, and thus an adhesive member formed between the lens barrel 120 and the bobbin 132 ( 190), while easily controlling the amount of the adhesive member 190.

For example, in a camera module including a screw-less lens barrel as in the embodiment, a reliability problem of the camera module may occur depending on the amount of the adhesive member 190 used to assemble the lens barrel.

For example, when the amount of the adhesive member 190 is less than the reference amount, the bonding force between the lens barrel 120 and the bobbin 132 is weak, and thus the lens barrel 120 is separated from the bobbin 132. problems can arise. Furthermore, if the amount of the adhesive member 190 is less than the reference amount, a problem in that accuracy of the moving position of the lens barrel 120 may decrease during auto focusing or hand shake compensation may occur. In addition, if the amount of the adhesive member 190 is greater than the standard amount, a problem of changing the resolving power of the lens 110 may occur during the curing process of the epoxy constituting the adhesive member 190 . For example, there is a problem in that shrinkage occurs during curing of the epoxy, and the shape of the lens barrel 120 changes due to the shrinkage. In addition, as the shape of the lens barrel 120 changes, problems such as curvature of the lens 110 or distortion of the assembly structure between the lens barrel 120 and the lens 110 occur, and accordingly, the lens 110 ) may cause a misalignment of the optical axis.

Accordingly, in the embodiment, while easily grasping the amount of the adhesive member 190 applied between the lens barrel 120 and the bobbin 132, the amount of the adhesive member 190 can be easily adjusted, A first stepped portion 125 is formed on the outer surface of the lens barrel 120 . Also, the first step portion 125 may have a step difference. That is, the first stepped portion 125 may include a plurality of stepped portions. For example, the first stepped portion 125 may include at least two portions having different inclination angles. However, the embodiment is not limited thereto, and the number of stepped portions constituting the first stepped portion 125 may be formed in three or more. That is, as shown in the drawing, the stepped portions constituting the first stepped portion 125 include a first portion 125-1, a second portion 125-2, and a third portion 125-3. can include The first portion 125-1, the second portion 125-2, and the third portion 125-3 may have different inclination angles in the optical axis direction. Accordingly, in the embodiment, the adhesive member 190 covers only the first part 125-1, covers the first part 125-1 and the second part 125-2, The coating applied between the lens barrel 120 and the bobbin 132 by covering the first part 125-1, the second part 125-2, and the third part 125-3. While easily grasping the amount of the adhesive member 190, the amount of the adhesive member 190 can be easily adjusted.

For example, when the adhesive member 190 is applied, while maintaining the bonding force between the lens barrel 120 and the bobbin 132, when the adhesive member 190 is cured, the lens barrel 120 It is necessary to determine an amount capable of minimizing the deformation of the lens 110 or the change in the resolving power of the lens 110 .

However, in the case of a conventional lens barrel or bobbin, in the process of applying the adhesive member, it is difficult to easily and intuitively grasp how much has been applied and how much should be applied.

Accordingly, in the embodiment, a first stepped portion 125 is formed on the outer surface of the lens barrel 120 at a portion where the adhesive member 190 is applied, and the first stepped portion 125 is used to The amount of application of the adhesive member 190 can be easily grasped and adjusted.

For example, the first stepped portion 125 includes a first portion 125-1, a second portion 125-2, and a third portion 125-3 having different inclination angles.

Also, the uppermost positions of the first portion 125-1, the second portion 125-2, and the third portion 125-3 may be distinguished by the amount of application of the adhesive member 190. For example, when the adhesive member 190 is applied to the first portion 125-1, the amount of application of the adhesive member 190 is “A” and is applied to the second portion 125-2. In this case, the application amount of the adhesive member 190 for this may be "B", and if it is applied to the third portion 125-3, the application amount of the adhesive member 190 for this may be "C".

Accordingly, in the embodiment, during the assembly process of the camera module 100, while maintaining the bonding force between the lens barrel 120 and the bobbin 132, deformation of the lens barrel 120 or change in resolution of the lens 110 is prevented. When the amount of application of the adhesive member 190 to prevent is "A", the adhesive member 190 is applied to a position corresponding to the first portion 125-1, and the amount of application of the adhesive member 190 can be easily adjusted. At this time, when the application amount of the adhesive member 190 is "A", the first portion 125-1 of the first stepped portion 125 is entirely covered by the adhesive member 190, The outer surface of the first part 125-1 is viewed from the outside, and the outer surfaces of the second part 125-2 and the third part 125-3 of the first stepped part 125 are confirmed from the outside. possible. Through this, in the embodiment, the application amount of the adhesive member 190 is determined, and the application amount of the adhesive member 190 is checked and adjusted using the first stepped portion 125 to correspond to the determined application amount. An adhesive member 190 may be formed. Through this, in the embodiment, it is possible to easily check and adjust the amount of application of the adhesive member 190, thereby securing the ease of the coupling process between the lens barrel 120 and the bobbin 132. Furthermore, in the embodiment, the bonding force between the lens barrel 120 and the bobbin 132 is improved by precisely adjusting the amount of the adhesive member 190 by a predetermined amount, while curing the adhesive member 190. Deterioration of the lens barrel 120 or deterioration of the resolution of the lens 110 may be minimized.

Meanwhile, the first inclination angle of the first part 125-1 of the first stepped portion 125, the second inclination angle of the second part 125-2, and the third inclination angle of the third part 125-3 Each may have an angle toward the inside of the lens barrel 120 as it goes upward.

Specifically, the outer diameter of the first portion 125 - 1 of the first stepped portion 125 of the lens barrel 120 may decrease toward the upper direction. In addition, the outer diameter of the second portion 125 - 2 of the first stepped portion 125 of the lens barrel 120 may decrease toward the upper side. In addition, the outer diameter of the third part 125 - 3 of the first stepped portion 125 of the lens barrel 120 may decrease toward the upper side. Through this, in the embodiment, according to the application amount of the adhesive member 190 from the outside, the outer surface of the first part 125-1, the outer surface of the second part 125-2, and the third part ( 125-3) to make it easy to check whether the outer surface is exposed.

For example, when the first stepped portion 125 of the lens barrel 120 has an inclination angle in which the outer diameter increases in an upward direction, it is impossible to check the first stepped portion 125 from the outside, and thus The application amount of the adhesive member 190 cannot be easily confirmed.

Meanwhile, the first stepped portion 125 may have more than three stepped portions. However, when the number of stepped portions in the lens barrel 120 is increased, the thickness of the lens barrel 120 becomes too thick in the upward direction. It becomes thinner, and thus the lens 110 may not be stably disposed therein. Therefore, in the embodiment, the first stepped portion 125 includes three stepped portions. However, the number of stepped portions formed in the lens barrel 120 may increase or decrease according to an increase or decrease in the number of lens barrels 120 accommodated in the lens barrel 120 .

Meanwhile, in the embodiment, the outer diameter of each stepped portion of the first stepped portion 125 may be different from each other.

For example, the average outer diameter of the first portion 125 - 1 of the first stepped portion 125 may be greater than the average outer diameter of the second portion 125 - 2 of the first stepped portion 125 . In addition, the average outer diameter of the third portion 125-3 of the first stepped portion 125 is the ratio between the first portion 125-1 and the second portion 125-2 of the first stepped portion 125. It may be smaller than the average outer diameter of each. Through this, in the embodiment, it is easy to check the amount of application of the adhesive member 190 from the outside, and based on this, it is easy to adjust the amount of application of the adhesive member 190.

7 is a perspective view of a lens driving device according to an embodiment, and FIG. 8 is an enlarged view of an inner surface of the bobbin of FIG. 7 .

Referring to FIGS. 7 and 8 , the lens driving device 130 includes a bobbin 132 .

The bobbin 132 includes a hollow part 132-1 in which the lens barrel 120 is accommodated.

The bobbin 132 includes an inner surface facing the outer surface of the lens barrel 120 .

For example, the bobbin 132 may include a second flange portion 132-2. The second flange portion 132-2 is the first flange portion 122 of the lens barrel 120 when the lens barrel 120 moves downward at the maximum within the hollow portion 132-1. Together with, it can function as a stopper to limit the movement of the lens barrel 120.

The bobbin 132 may include an inner portion 132-3 on the second flange portion 132-2.

The inner portion 132-3 of the bobbin 132 is an inner surface of the bobbin 132 facing the first flange portion 122 and the first stepped portion 125 of the lens barrel 120. can mean

The inner portion 132-3 of the bobbin 132 may include a recessed portion 132-4 corresponding to the protruding portion 122-1 formed on the first flange portion 122 of the lens barrel 120. . In addition, when the lens barrel 120 moves downward at the maximum within the hollow part of the bobbin 132, the recessed portion 132-4 is formed with the protruding portion 122-1 of the lens barrel 120. By contacting it, movement of the lens barrel 120 in a downward direction may be restricted.

Meanwhile, the inner portion 132 - 3 of the bobbin 132 may face the first stepped portion 125 of the lens barrel 120 .

Also, in the inner portion 132 - 3 of the bobbin 132 , a step may not be formed in a region facing the first stepped portion 125 of the lens barrel 120 . However, the recessed portion 132-4 is formed in one area of the inner portion 132-3, and accordingly, the area where the step is not formed in the inner portion 132-3 is the recessed portion 132-4. ) may mean an area excluding the area formed.

For example, when a step is formed on the inner portion 132-3 of the bobbin 132 facing the first step portion 125 of the lens barrel 120, when adjusting the application amount of the adhesive member 190 , It is necessary to check the coating amount in the stepped portion of the lens barrel 120 and the coating amount in the stepped portion of the inner portion 132-3, and it may be difficult to accurately check and adjust the coating amount accordingly. Therefore, in the embodiment, the inner portion 132-3 of the bobbin 132, excluding the recessed portion 132-4, faces the first stepped portion 125 of the lens barrel 120. Steps should not be formed in the area.

Meanwhile, in the embodiment, the application amount of the adhesive member 190 is achieved by the first stepped portion 125 formed on the lens barrel 120 . At this time, the first stepped portion 125 has a limited area for stable support of the lens 110 accommodated in the lens barrel 120 .

Accordingly, in the embodiment, the bobbin 132 may include a second stepped portion 132-5 formed on the inner portion 132-3.

The second stepped portion 132 - 5 may enable checking and adjusting the amount of the adhesive member 190 applied between the lens barrel 120 and the bobbin 132 .

For example, the lens barrel 120 includes a first stepped portion 125 divided into three stepped portions. Through this, in the embodiment, based on the three stepped portions, the application amount and confirmation of the adhesive member 190 can be performed in three stages. However, the application amount and confirmation of the adhesive member 190 may need to be performed in 4 steps or more depending on the product.

Through this, in the embodiment, the second stepped portion 132-5 is formed on the bobbin 132.

For example, the second stepped portion 132-5 includes a first portion 132-51 having a step difference with the inner portion 132-3 and a second portion 132-51 having a step difference with the first portion 132-51. It includes portions 132-52.

In this case, the first portion 132 - 51 of the second stepped portion 132 - 5 may be positioned higher than the first stepped portion 125 formed on the lens barrel 120 . For example, the lowermost end of the first portion 132-51 of the second stepped portion 132-5 is the third portion 125-3 of the first stepped portion 125 of the lens barrel 120. ) may be located higher than the top of the To this end, the application amount and confirmation of the additional adhesive member 190 are made possible through the first portion 132-51 of the second stepped portion 132-5.

Furthermore, when a portion of the adhesive member 190 flows into the lens driving device 130 due to an error in adjusting the amount of application of the adhesive member 190, the lens barrel 120 cannot be normally driven. can do.

In addition, the second stepped portion 132-5 of the bobbin 132 includes a plurality of stepped portions, through which the application amount of the adhesive member 190 can be checked and adjusted, and the lens is driven. The adhesive member 190 is prevented from overflowing into the device 130 .

9 is an enlarged view of a partial area of the cross-sectional view of the camera module in the direction A-A' of FIG. 1, and FIG. 10 is an enlarged view of a partial area of the cross-sectional view of the camera module in the direction BB' of FIG.

Referring to FIG. 9 , the adhesive member 190 in the embodiment may be applied between the outer surface of the lens barrel 120 and the inner surface of the bobbin 132 .

At this time, the outer surface of the lens barrel 120 includes a first flange portion 122 and a first stepped portion 125 .

Also, the inner surface of the bobbin 132 includes an inner portion 132-3 facing the outer surfaces of the first flange portion 122 and the first stepped portion 125.

At this time, in the embodiment, the adhesive member 190 is applied between the first flange portion 122 of the lens barrel 120 and the first stepped portion 125 and the inner portion 132-3 of the bobbin 132 In this case, a first step in which the adhesive member 190 exposes all of the first stepped portion 125 (when applied only to the uppermost end of the first flange portion), the first portion of the first stepped portion 125 125-1, 2nd step applied to the second part 125-2 of the first stepped part 125, 3rd step applied to the 3rd part 125-2 of the first stepped part 125 3) can be divided into a fourth step that is applied. Through this, in the embodiment, in the process of applying the adhesive member 190, the amount of application of the adhesive member 190 can be easily adjusted according to whether the outer surface of each stepped portion of the first stepped portion 125 is exposed. It is possible to check, and based on this, it is possible to easily adjust the application amount of the adhesive member 190.

Furthermore, in the embodiment, in preparation for the case where the adhesive member 190 is applied too excessively and overflows to the lens driving device 130 or the application amount of the adhesive member 190 needs to be additionally adjusted, the The second stepped portion 132-5 is formed on the bobbin 132.

Meanwhile, referring to FIG. 10 , in the embodiment, the lens barrel 120 and the bobbin 132 are coupled by using a coupling jig (not shown) to insert the lens barrel 120 into the hollow portion of the bobbin 132. It can be made by applying the adhesive member 190 in a state disposed at a certain position within. At this time, a predetermined air gap exists between the outer surface of the lens barrel 120 and the inner surface of the bobbin 132, and the adhesive member 190 may be applied between the air gaps.

At this time, the protruding part 122-1 of the first flange part 122 of the lens barrel 120 and the recessed part 132-4 of the bobbin 132 may directly contact each other, but in the embodiment An air gap of a certain space exists between the protruding part 122-1 and the recessed part 132-4.

Accordingly, the adhesive member 190 may be coated while surrounding the upper surface, the outer surface, and the lower surface of the protruding portion 122-1 of the lens barrel 120. Through this, in the embodiment, the contact area between the adhesive member 190 and the lens barrel 120 can be increased, and through this, the bonding force between the lens barrel 120 and the bobbin 132 can be improved. .

Meanwhile, in the drawing, an air gap also exists in an area A between the second flange portion 132-2 of the bobbin 132 and the lower end 123 of the lens barrel 120, and the adhesive member 190 ) may also be applied to the region (A).

11 is a diagram for explaining a relationship between a first stepped portion of a lens barrel and a lens according to an exemplary embodiment.

Referring to FIG. 11 , the lens barrel 120 includes first stepped portions 125 having steps according to different inclination angles.

At this time, the outer surface of the conventional lens barrel may have a plurality of steps. However, the level difference of the lens barrel in the prior art is determined by the thickness of the lens accommodated inside, not for the purpose of checking and adjusting the application amount of the adhesive member 190 as in the embodiment.

For example, the level difference of the outer surface of a conventional lens barrel is determined by the thickness of a plurality of lenses accommodated therein. For example, steps on an outer surface of a conventional lens barrel are formed to correspond to a plurality of lenses accommodated in the lens barrel. For example, when a lens includes a first lens, a second lens, and a third lens, a first step overlapping the first lens in a direction perpendicular to an optical axis on an outer surface of a conventional lens barrel, and the second lens barrel. It has a second step overlapping the lens in a direction perpendicular to the optical axis and a third step overlapping the third lens in a direction perpendicular to the optical axis.

Unlike this, the first stepped portion 125 of the lens barrel 120 in the embodiment confirms and adjusts the application amount of the adhesive member 190 regardless of the lens 110 accommodated in the lens barrel 120. formed for

Through this, in the embodiment, the lens 110 accommodated in the lens barrel 120 may include the first lens 110a. In the embodiment, at least each of the first portion 125-1, the second portion 125-2, and the third portion 125-3 of the first stepped portion 125 of the lens barrel 120 A portion may overlap the first lens 110a in a direction perpendicular to the optical axis. For example, in a general lens barrel, only one stepped portion may be formed in the area H overlapping one lens and the optical axis in a direction perpendicular to the optical axis, but in the embodiment, one lens overlaps the optical axis in a direction perpendicular to the optical axis. A plurality of stepped portions are formed in the region H to be formed.

The lens barrel of the camera module in the embodiment includes a first stepped portion divided into a plurality of parts having different inclination angles. The first stepped portion is formed above the first flange portion of the lens barrel, and accordingly, the amount of the adhesive member formed between the lens barrel and the bobbin can be easily grasped and the amount of the adhesive member can be easily adjusted. let it do For example, in a camera module including a screwless type lens barrel as in the embodiment, a reliability problem of the camera module may occur depending on an amount of an adhesive member used to assemble the lens barrel. For example, if the amount of the adhesive member is less than the reference amount, the bonding force between the lens barrel and the bobbin is weak, and the lens barrel may be separated from the bobbin. Furthermore, if the amount of the adhesive member is less than the reference amount, the accuracy of the moving position of the lens barrel may decrease during auto focusing or image stabilization. In addition, if the amount of the adhesive member is greater than the reference amount, a problem of changing the resolving power of the lens may occur during the curing process of the epoxy constituting the adhesive member. For example, there is a problem in that shrinkage occurs during the curing process of the epoxy, and the shape of the lens barrel changes due to the shrinkage. In addition, as the shape of the lens barrel changes, problems such as curvature of the lens or distortion of the assembly structure between the lens barrel and the lens may occur, resulting in distortion of the optical axis of the lens.

Accordingly, in the embodiment, a first stepped portion is formed on the outer surface of the lens barrel to easily control the amount of the adhesive member while easily grasping the amount of the adhesive member applied between the lens barrel and the bobbin. do. Also, the first step portion may have a step difference. That is, the first stepped portion may include a plurality of stepped portions. For example, the first stepped portion may include a first portion, a second portion, and a third portion. The first part, the second part, and the third part may have different inclination angles in the optical axis direction. Accordingly, in the embodiment, the adhesive member covers only the first part, covers the first part and the second part, or covers the first part, the second part, and the third part. , While easily grasping the amount of the adhesive member applied between the lens barrel and the bobbin, the amount of the adhesive member can be easily adjusted.

In addition, the bobbin in the embodiment may include a second stepped portion formed on the inner portion.

The second stepped portion may enable confirmation and control of an amount of an adhesive member applied between the lens barrel and the bobbin. For example, the lens barrel includes a first stepped portion divided into three stepped portions. Through this, in the embodiment, the application amount and confirmation of the adhesive member can be performed in three stages based on the three stepped portions. However, depending on the product, the application amount and confirmation of the adhesive member may need to be performed in 4 or more steps.

Through this, in the embodiment, the second stepped portion is formed on the bobbin. For example, the second stepped portion includes a first portion having a step difference with the inner portion and a second portion having a step difference with the first portion. In this case, the first portion of the second stepped portion may be positioned higher than the first stepped portion formed in the lens barrel. For example, a lowermost end of the first part of the second stepped part may be located higher than an uppermost end of a third part of the first stepped part of the lens barrel. To this end, it is possible to check and apply an additional adhesive member through the first portion of the second stepped portion.

Furthermore, when a portion of the adhesive member flows into the lens driving device due to an error in adjusting the amount of application of the adhesive member, normal driving of the lens barrel may be impossible. At this time, the second stepped portion of the bobbin includes a plurality of stepped portions, through which it is possible to check and adjust the application amount of the adhesive member, and at the same time to prevent the adhesive member from overflowing into the lens driving device. .

12 is a view showing bonding force between a lens barrel and a bobbin according to an application amount of an adhesive member according to an embodiment.

Case 1 in FIG. 12 is a case in which the adhesive member 190 is applied to the first portion 125-1 of the first stepped portion 125 of the lens barrel 120, and in case 2, the adhesive member 190 is applied to the first part 125-1. This is a case where the second portion 125-2 of the first stepped portion 125 of the lens barrel 120 is applied, and in case 3, the adhesive member 190 is applied to the first stepped portion 125 of the lens barrel 120. It shows the case where the third part (125-3) of the coating is applied.

At this time, in the case of case 1, as a result of measuring the separation force, a result lower than the reference value of 15 kgf was found, and in the case of cases 2 and 3, it was confirmed that the separation force result appeared higher than the reference value. Furthermore, it was confirmed that case 2 had a higher detachment force value than case 3.

13 and 14 show the degree of deformation of the lens barrel according to the application amount of the adhesive member according to the embodiment.

13(a) shows the degree of deformation of the lens barrel during the curing process corresponding to case 1 of FIG. 12 (the state in which the lens is not accommodated), and FIG. Fig. 13(c) shows the degree of deformation of the lens barrel during the curing process corresponding to case 3 in FIG. 12 (state where the lens is not received). will be.

As shown in (a) to (c) of FIG. 13, in case 1, the degree of deformation of the lens barrel is about 0.02672 mm, in case 2, the degree of deformation of the lens barrel is about 0.02660 mm, and in case 3, the degree of deformation of the lens barrel is about 0.02660 mm. It was confirmed that the degree of deformation of the lens barrel was about 0.02619 mm, and accordingly, it was confirmed that there was almost no degree of deformation of the lens barrel when the adhesive members corresponding to cases 1 to 3 were applied.

Furthermore, FIG. 14 shows the degree of deformation of the lens barrel when the adhesive member 190 corresponding to case 2 is applied in a state where the lens is accommodated in the lens barrel. As shown in FIG. 14 , in a state where the lens 110 is accommodated in the lens barrel 120, it can be seen that the degree of deformation of the lens barrel is further reduced.

In the case of product specifications of the camera module of the embodiment, the adhesive member 190 may be applied corresponding to case 2 in which the degree of deformation of the lens barrel is low while the detachment force has a certain level or more. Based on this, in the embodiment, in the process of applying the adhesive member 190, the outer surface of the second portion 125-2 of the first stepped portion 125 of the lens barrel 120 is the adhesive member 190. ), the adhesive member 190 may be applied to a height at which the outer surface of the third part 125-3 is all exposed.

For example, the adhesive member 190 in the embodiment covers the outer surface of the first part 125-1 and the outer surface of the second part 125-2 of the first stepped portion 125, An outer surface of the third portion 125-3 may be formed while being exposed. For example, the adhesive member 190 may be applied only up to the upper end of the second part 125-2 of the first stepped part 125 of the lens barrel 120, and through this, an optimal bonding force may be obtained. While having it, it is possible to minimize deformation of the lens barrel or change in resolving power of the lens.

15 is a perspective view of a portable terminal according to an embodiment, and FIG. 16 is a configuration diagram of the portable terminal shown in FIG. 15

15 and 16, a portable terminal (200A, hereinafter referred to as a “terminal”) includes a body 850, a wireless communication unit 710, an A/V input unit 720, a sensing unit 740, an input/output unit, It may include an output unit 750, a memory unit 760, an interface unit 770, a control unit 780, and a power supply unit 790.

The body 850 shown in FIG. 15 has a bar shape, but is not limited thereto, and is a slide type, folder type, or swing type in which two or more sub-bodies are coupled to be relatively movable. , and may have various structures such as a swivel type.

The body 850 may include a case (casing, housing, cover, etc.) constituting an external appearance. For example, the body 850 may be divided into a front case 851 and a rear case 852 . Various electronic components of the terminal may be embedded in the space formed between the front case 851 and the rear case 852 .

The wireless communication unit 710 may include one or more modules enabling wireless communication between the terminal 200A and a wireless communication system or between the terminal 200A and a network in which the terminal 200A is located. For example, the wireless communication unit 710 may include a broadcast reception module 711, a mobile communication module 712, a wireless Internet module 713, a short-distance communication module 714, and a location information module 715. there is.

An audio/video (A/V) input unit 720 is for inputting an audio signal or a video signal, and may include a camera 721 and a microphone 722.

The camera 721 may include a camera module according to the embodiment shown in FIG. 3 .

The sensing unit 740 detects the current state of the terminal 200A, such as the open/closed state of the terminal 200A, the location of the terminal 200A, whether or not there is a user contact, the direction of the terminal 200A, and the acceleration/deceleration of the terminal 200A. By sensing, a sensing signal for controlling the operation of the terminal 200A may be generated. For example, when the terminal 200A is in the form of a slide phone, whether the slide phone is opened or closed may be sensed. In addition, it is responsible for sensing functions related to whether or not the power supply unit 790 supplies power and whether or not the interface unit 770 is connected to an external device.

The input/output unit 750 is for generating input or output related to sight, hearing, or touch. The input/output unit 750 may generate input data for controlling the operation of the terminal 200A, and may also display information processed by the terminal 200A.

The input/output unit 750 may include a keypad unit 730, a display module 751, a sound output module 752, and a touch screen panel 753. The keypad unit 730 may generate input data by keypad input.

The display module 751 may include a plurality of pixels whose colors change according to electrical signals. For example, the display module 751 may be a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, a 3D At least one of 3D displays may be included.

The audio output module 752 outputs audio data received from the wireless communication unit 710 in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, or a broadcast reception mode, or stored in the memory unit 760. Audio data can be output.

The touch screen panel 753 may convert a change in capacitance caused by a user's touch to a specific area of the touch screen into an electrical input signal.

The memory unit 760 may store programs for processing and control of the control unit 780, and may store input/output data (eg, phone book, messages, audio, still images, photos, videos, etc.) can be temporarily stored. For example, the memory unit 760 may store an image captured by the camera 721, for example, a photo or video.

The interface unit 770 serves as a passage through which an external device connected to the terminal 200A is connected. The interface unit 770 receives data from an external device or receives power and transmits it to each component inside the terminal 200A, or transmits data inside the terminal 200A to an external device. For example, the interface unit 770 may include a wired/wireless headset port, an external charger port, a wired/wireless data port, a memory card port, a port connecting a device having an identification module, an audio I/O (Input/ Output) port, video I/O (Input/Output) port, and earphone port.

The controller 780 may control overall operations of the terminal 200A. For example, the controller 780 may perform related control and processing for voice calls, data communications, video calls, and the like.

The controller 780 may include a multimedia module 781 for playing multimedia. The multimedia module 781 may be implemented within the control unit 180 or may be implemented separately from the control unit 780.

The controller 780 may perform a pattern recognition process capable of recognizing handwriting input or drawing input performed on the touch screen as characters and images, respectively.

The power supply unit 790 may receive external power or internal power under the control of the control unit 780 to supply power necessary for the operation of each component.

Features, structures, effects, etc. described in the embodiments above are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, etc. illustrated in each embodiment can be combined or modified with respect to other embodiments by a person having ordinary knowledge in the field to which the embodiments belong. Therefore, contents related to these combinations and variations should be construed as being included in the scope of the present invention.

Claims (15)

circuit board;
an image sensor disposed on the circuit board;
an actuator disposed on the circuit board;
a lens barrel disposed on the actuator;
a lens disposed within the lens barrel and disposed at a position corresponding to the image sensor; and
an adhesive member disposed between the lens barrel and the actuator and fixing the lens barrel to the actuator;
The actuator includes a bobbin including a hole in which the lens barrel is accommodated,
The lens barrel includes a first stepped portion facing an inner circumferential surface of the hole of the bobbin and at least a portion of which contacts the adhesive member;
The first step part
A first portion having a first inclination angle in the optical axis direction;
A second part connected to the upper end of the first part and having a second inclination angle different from the first inclination angle in the direction of the optical axis,
camera module. According to claim 1,
The average outer diameter of the first portion of the first stepped portion,
greater than the average outer diameter of the second part of the second step,
camera module. According to claim 1,
Each outer diameter of the first portion and the second portion of the first stepped portion increases in an upward direction,
camera module. According to claim 1,
The bobbin,
Including an inner portion facing the first portion and the second portion of the first stepped portion,
The adhesive member is
Disposed between the inner surface of the inner part of the bobbin and the outer surface of the first stepped part of the lens barrel,
camera module. According to claim 4,
The inner portion of the bobbin does not have a step,
camera module. According to claim 4,
The bobbin,
A second stepped portion disposed higher than the inner portion,
The second step portion,
The first step portion does not overlap in a direction perpendicular to the optical axis direction,
camera module. According to claim 6,
The lowermost end of the second stepped portion is located higher than the uppermost end of the first stepped portion,
camera module. According to claim 4,
The lens barrel,
A first flange portion protruding outwardly perpendicular to the optical axis direction and facing the inner portion of the bobbin;
The lower end of the first portion of the first stepped portion is connected to the upper surface of the first flange portion,
The adhesive member,
Disposed between the outer surface of the first flange portion and the inner portion of the barrel,
camera module. According to claim 8,
The lens barrel,
It is formed on the first flange portion and includes at least one protrusion protruding outwardly,
The bobbin,
Formed on the inner side and including a depression corresponding to the protrusion,
camera module. According to claim 9,
The protrusion of the lens barrel,
It is spaced apart from the recessed part of the bobbin,
The adhesive member,
Filling the depression and covering the upper, outer and lower surfaces of the protrusion,
camera module. According to claim 1,
The first step portion,
A third portion connected to the upper end of the second portion in an optical axis direction and having a third inclination angle different from the first and second inclination angles,
camera module. According to claim 11,
the lens,
Including a first lens overlapping at least a portion of each of the first to third portions of the first stepped portion in a direction perpendicular to the optical axis,
camera module. a holder including a hole;
a lens barrel accommodated in the hole of the holder and including a first stepped portion; and
an adhesive member disposed between an outer surface of the stepped portion of the lens barrel and an inner circumferential surface of the hole of the holder;
The first stepped portion of the lens barrel includes first to third stepped portions connected in an optical axis direction and having different inclination angles;
The adhesive member exposes the outer surface of the third stepped portion while covering the outer surfaces of the first and second stepped portions.
camera module. According to claim 13,
The holder includes a second stepped portion formed on an inner surface facing the outer surface of the lens barrel,
The second step portion,
Does not overlap with the first stepped portion in a direction perpendicular to the optical axis,
camera module. A body, the camera module of any one of claims 1 to 14 disposed on the body and capturing an image of a subject, and
A display unit disposed on the main body and outputting an image captured by the camera module,
optical instrument.

Images