JP2014178374A - Camera module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the possibility of the occurrence of functional deterioration or malfunction of an optical mechanism caused by an adhesive.SOLUTION: A lens holder (4) provided in a camera module (100) includes a receiving part (1) which can receive an adhesive (70) leaked to the outside of a bonding area (R) between the inner wall (4a) of the lens holder 4 and a lens barrel (14), when the adhesive (70) is injected to fix the lens barrel (14) to the lens holder (4).

Description

  The present invention relates to a camera module mounted on a small information terminal such as a mobile phone.

  2. Description of the Related Art In recent years, camera modules mounted on small information terminals (for example, smart phones) have an optical mechanism that exhibits an autofocus function, a camera shake correction function, or the like as the small information terminals become highly functional. For example, Patent Documents 1 and 2 are examples of such a camera module (solid-state imaging device).

  Patent Document 1 discloses a camera module 1000 as shown in FIG. In this camera module 1000, the position of the imaging lens 1001 in the optical axis direction is adjusted to the optimal position by sliding the lens barrel 1002 with respect to the lens holder 1003 in the optical axis direction. The lens holder 1003 has a recess 1006 and a protrusion 1008.

  Patent Document 2 discloses a solid-state imaging device 1100 as shown in FIG. In this solid-state imaging device 1100, a female threaded portion 1105 of a housing 1102 and a male threaded portion 1106 of an optical component 1101 are screwed together, and a concave portion 1104 provided in a part of the female threaded portion 1105 at the opening end of the optical component supporting portion 1103. Then, an adhesive is applied, and the optical component 1101 and the housing 1102 are fixed.

JP 2010-230910 A (released on October 14, 2010) JP 2008-1224796 A (published May 29, 2008)

  For example, as described in Patent Document 1, an adhesive is applied to fix the lens barrel 1002 to the lens holder 1003 at a position where the imaging lens 1001 is adjusted to have a predetermined focal length. The

  In general, there are many types of camera modules, and some types have a small production amount. For this reason, the work robot or program for mechanizing the adjustment of the focal length and the fixing (adhesion) of the two members requires a large amount of cost, and at present, these operations are performed manually. Yes. Further, as the adhesive, an adhesive having a relatively low viscosity is often used so that the adhesive can easily enter between the lens barrel 1002 and the lens holder 1003.

  Therefore, the adhesive may be dripped excessively beyond the amount necessary for the fixing. In this case, in the camera module 1000, the lens holder 1003 is adhered to a part other than the lens barrel 1002 (for example, the cover 1004 or the base 1005) by the unnecessary adhesive, and the optical mechanism including the lens holder 1003 and the like operates. Otherwise, the autofocus function or the camera shake correction function may not be performed.

  Moreover, in the camera module 1000, it is assumed that the upper end part 1007a and the lower end part 1007b of the recessed part 1006 are produced with the same size and shape. In this case, the unnecessary adhesive cannot be fastened to the recess 1006, and the adhesive flows to the bottom of the lens holder 1003, and the lens holder 1003 may adhere to components other than the lens barrel 1002. It was. In addition, due to the low viscosity of the adhesive, it is difficult to hold the unnecessary adhesive with the protrusion 1008, and the lens holder 1003 flows to the bottom surface that can come into contact with the base 1005 or drops onto the image sensor 1009. It was difficult to prevent.

  Further, in the camera module 1000, a mechanism for suppressing the flow of the unnecessary adhesive to the outer wall of the lens holder 1003 is not particularly disclosed.

  Further, the solid-state imaging device 1100 does not have a mechanism for receiving the adhesive overflowing from the recess 1104 when an excessive amount of adhesive flows into the recess 1104. For this reason, the adhesive may be applied to a place where bonding is not intended, and the optical function may not be exhibited.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a camera module capable of reducing the possibility of a functional degradation or malfunction of an optical mechanism caused by an adhesive. It is.

In order to solve the above problems, a camera module according to an aspect of the present invention is provided.
A camera module comprising a lens barrel that holds an imaging lens, and a lens holder that holds the lens barrel,
When the adhesive is injected to fix the lens barrel with respect to the lens holder, the lens holder has the adhesive leaked to the outside of the bonding region between the inner wall of the lens holder and the lens barrel. It has a receiving part that can be received.

Furthermore, in order to solve the above problems, a camera module according to an aspect of the present invention is provided.
A camera module comprising a lens barrel that holds an imaging lens, and a lens holder that holds the lens barrel,
The lens holder includes an adhesive that is not poured between the inner wall of the lens holder and the lens barrel, out of the adhesive injected to fix the lens barrel to the lens holder. It has a channel which can be flowed along the outer wall.

  According to one embodiment of the present invention, there is an effect that it is possible to reduce the possibility of a functional deterioration or malfunction of an optical mechanism caused by an adhesive.

It is a figure which shows an example of the structure of the lens holder with which the camera module which concerns on one Embodiment of this invention is provided, (a) is the sectional drawing, (b) is the top view. It is a perspective view which shows an example of the external appearance of the said camera module. It is AA arrow sectional drawing of the camera module shown in FIG. It is a flowchart which shows an example of the assembly process of the said camera module. It is a figure for demonstrating the work condition in the assembly process of a camera module. It is a figure for demonstrating the work condition in the assembly process of a camera module. It is a figure which shows an example of the schematic sectional drawing of the camera module as a comparative example. It is a figure which shows an example of the schematic sectional drawing of the camera module as a comparative example. It is sectional drawing which shows an example of the camera module which concerns on another one Embodiment of this invention. It is a figure which shows an example of the structure of the lens holder with which the camera module shown in FIG. 9 is provided, (a) is the sectional drawing, (b) is the top view. It is a figure which shows an example of the schematic sectional drawing of the camera module as a comparative example. It is sectional drawing which shows an example of the camera module which concerns on another one Embodiment of this invention. It is a figure which shows an example of the structure of the lens holder with which the camera module shown in FIG. 12 is provided, (a) is the sectional drawing, (b) is the top view. It is sectional drawing which shows an example of the camera module which concerns on another one Embodiment of this invention. It is a figure which shows an example of the structure of the lens holder with which the camera module shown in FIG. 14 is provided, (a) is the sectional drawing, (b) is the top view. It is sectional drawing which shows the structure of the conventional camera module. It is a perspective view which shows the structure of the conventional camera module.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

Embodiment 1
(Appearance of camera module 100)
First, the external appearance of the camera module 100 according to the present embodiment will be described with reference to FIG. FIG. 2 is a perspective view of the camera module of the present embodiment.

  The camera module 100 includes an optical unit 5 that is an imaging optical system, a lens driving device 6 that drives the optical unit 5, and an imaging unit 7 that performs photoelectric conversion of light via the optical unit 5. The optical unit 5 is held inside the lens driving device 6. The imaging unit 7 includes a sensor unit 8 and a substrate 9 on which the sensor unit 8 is mounted. The camera module 100 has a configuration in which a sensor unit 8 and a lens driving device 6 are stacked on a substrate 9 in this order in the optical axis direction (Z-axis direction). In the following description, for the sake of convenience, the optical unit 5 side is upward (+ Z axis direction), and the imaging unit 7 side is downward (−Z axis direction).

(Overall structure of camera module 100)
Next, the overall structure of the camera module 100 will be described with reference to FIG. 3 is a cross-sectional view taken along the line AA of the camera module 100 of FIG. 2, and is a cross-sectional view of the center portion of the camera module 100 cut in the optical axis direction.

  The optical unit 5 is an imaging optical system that forms a subject image, and guides external light to the sensor unit 8 of the imaging unit 7. The optical unit 5 includes a plurality (two in FIG. 3) of imaging lenses 10 and a lens barrel 14 that holds the imaging lenses 10. The lens barrel 14 is fixed to the lens driving device 6. The optical axis (Z-axis direction) of the imaging lens 10 coincides with the axis of the lens barrel 14.

  The lens driving device 6 drives the optical unit 5 in the optical axis direction by electromagnetic force. That is, the lens driving device 6 moves the imaging lens 10 between the macro end (contact position with the cover 12) from the infinity end (contact position (contact portion) between the bottom surface 2 of the lens holder 4 and the base 17). Move up and down in the Z-axis direction. Thereby, the camera module 100 exhibits an autofocus function. The lens driving device 6 also moves in a plane direction (X direction and Y direction) perpendicular to the optical axis, so that the camera module 100 exhibits a camera shake correction function. The camera module 100 is equipped with a VCM (Voice Coil Motor) type lens driving device 6, but not limited to this, the lens driving device 6 uses a stepping motor type or a piezoelectric element. It may be realized by type or the like.

  The lens driving device 6 includes a movable unit that moves in the optical axis direction when the imaging lens 10 is driven and moves the optical unit 5 (imaging lens 10) in the optical axis direction, and a fixed position that does not vary when the imaging lens 10 is driven. Department. The movable part is accommodated inside the fixed part. The movable part is composed of the lens holder 4 and the coil 16, and the fixed part is composed of the cover 12, the yoke 13, the permanent magnet 15, and the base 17.

  Specifically, the lens driving device 6 has a configuration in which the lens holder 4 that holds the lens barrel 14 is accommodated in a space formed by the cover 12, the yoke 13, and the base 17.

  The lens holder 4 holds the lens barrel 14 holding the imaging lens 10 inside. The lens barrel 14 and the lens holder 4 are both hollow (cylindrical) members. Specifically, the inner diameter of the lens holder 4 is slightly larger than the outer diameter of the lens barrel 14, and the lens barrel 14 is attached to the center of the lens holder 4. The axis of the lens holder 4 coincides with the optical axis of the imaging lens 10 and the axis of the lens barrel 14.

  In addition, a female thread portion is formed in a joining region R of the lens holder 4 with the lens barrel 14 so as to be screwed with a male thread portion formed on the outer surface of the lens barrel 14. Thereby, at the time of manufacturing the camera module 100, it is possible to adjust the focal length of the imaging lens 10 (the distance from the light receiving surface of the imaging element 19 to the imaging lens 10) by moving the lens barrel 14 in the optical axis direction. Become. In addition, the joining area | region R (area | region in which threading was formed) of the lens holder 4 and the lens barrel 14 may be flat.

  Further, the lens holder 4 has an adhesive 70 leaking from the joining region R of the lens holder 4 and the lens barrel 14 along the inner wall 4a of the lens holder 4 in the vicinity of the bottom surface 2 in contact with the base 17 (FIG. 6). A receiving portion (receiving portion) 1 that can receive the reference). The adhesive 70 is dropped on the dropping region 23 in the vicinity of the top 4c of the lens holder 4 (in the vicinity of the upper end of the lens barrel 14 on the upper surface opening 11 side). Details of the receiving unit 1 will be described later.

  The lens barrel 14 is bonded to the lens holder 4 with an adhesive 70. That is, the lens barrel 14 is fixed to the lens holder 4 in a state in which the position of the imaging lens 10 in the optical axis direction is adjusted. Thereby, it can prevent that the position of the adjusted imaging lens 10 shifts | deviates.

  As the adhesive 70, for example, a thermosetting UV adhesive or an anaerobic UV adhesive is preferably used. Thereby, the adhesive 70 that has entered the gap between the lens holder 4 and the lens barrel 14 can be thermally cured or anaerobically cured. On the other hand, the adhesive 70 that is raised on the surface and forms a fillet can be UV cured.

  The adhesive 70 preferably has a relatively low viscosity so that it can easily penetrate into the joining region R between the lens holder 4 and the lens barrel 14. For example, a so-called screw lock agent (adhesive: screw lock 1401B manufactured by ThreeBond Co., Ltd.). Etc.) is used. For example, the viscosity is about 350 mPa · s. As a result, the adhesive 70 can be sufficiently spread over the bonding region R. In addition, when the viscosity of the adhesive 70 is high, the frequency of clogging the dispenser 61 and the needle 62 (see FIG. 6) increases, and the cost for replacement of the member is increased. Such a situation can be prevented.

  A coil 16 is fixed to the outer peripheral end (flange) of the lens holder 4. The coil 16 extends from the outer peripheral end (a part of the bottom) of the lens holder 4 to the light incident side (upper surface opening 11 side).

  The base 17 constitutes the bottom of the lens driving device 6, and the sensor unit 8 is provided on the back surface of the base 17. A bottom surface is formed at the center of the base 17 in order to secure an optical path.

  The yoke 13 is a cylindrical member and constitutes a side surface portion of the lens driving device 6. The yoke 13 accommodates a movable part inside. The yoke 13 is fixed on the base 17. In the present embodiment, the cover 12 is provided above the yoke 13. The cover 12 constitutes the upper part (top surface) of the lens driving device 6. An upper surface opening 11 is formed at the center of the cover 12 to ensure an optical path. Note that the yoke 13 itself may serve as a cover, so that the cover 12 may be omitted. In this case, the upper surface opening 11 is formed in the yoke 13.

  A magnetic circuit composed of permanent magnets 15 is disposed on the inner side surface of the yoke 13 so as to face the coil 16. Further, an inner outer peripheral portion which is a part of the yoke 13 and is provided substantially vertically inside the lens driving device 6 so as to face the bottom portion of the lens holder 4, the inner outer peripheral wall 13 a is an outer wall (side wall) of the lens holder 4. ) It is provided to face 4b.

  The lens driving device 6 drives the imaging lens 10 in the optical axis direction by electromagnetic force generated by the coil 16 and the permanent magnet 15. Specifically, in the present embodiment, the imaging lens 10 (lens holder 4) can be driven in the optical axis direction by a force generated by passing a current through the coil 16 in the magnetic field formed by the permanent magnet 15. It becomes possible.

  In the lens driving device 6 of the present embodiment, the upper surface (the surface of the top 4c, the top surface of the lens holder 4) and the lower surface (a part of the bottom surface that does not contact the base 17) of the lens holder 4 are respectively plates. Springs 21a and 21b are provided. The leaf springs 21a and 21b press the lens holder 4 in the optical axis direction. That is, the leaf springs 21a and 21b support the lens holder 4 movably in the optical axis direction by an elastic force. The leaf springs 21a and 21b have a spiral pattern. In this embodiment, the leaf springs 21 a and 21 b are fixed at one end to the yoke 13 or the base 17 and at the other end to the lens holder 4. However, the leaf springs 21a and 21b only need to have one end fixed to the movable portion and the other end fixed to the fixed portion.

  In the assembled state of the camera module 100 shown in FIG. 3, the bottom surface 2 of the lens holder 4 is in contact with the base 17 and the lens holder 4 is moved downward (−Z direction) by the elastic force of the leaf springs 21a and 21b. Is being pressurized. Further, the elastic force of the leaf springs 21a and 21b can be easily pushed down manually, for example, by the contact of the needle 62 (see FIG. 6) when the adhesive 70 is dropped.

  Further, in the lens driving device 6, a groove (not shown) may be formed in a part of the upper surface of the base 17 (the surface facing the lens holder 4), and an adhesive dust trapping agent may be applied to the groove. . In this case, the foreign matter that has moved onto the base 17 can be captured by the dust trapping agent.

  Next, the imaging unit 7 is provided on the bottom surface (the bonding surface of the base 17 with the sensor unit 8 (the bottom surface of the base 17)) side of the lens driving device 6, and photoelectrically converts the incident light incident from the optical unit 5. Convert. The imaging unit 7 includes a sensor unit 8 and a substrate 9 on which the sensor unit 8 is mounted. The sensor unit 8 includes a glass plate 20, an image sensor (sensor chip) 19, and a sensor cover 18, which are fixed on the substrate 9.

  The image sensor 19 is an image sensor that converts a subject image formed by the lens driving device 6 into an electric signal. That is, the sensor device converts an optical signal received through the imaging lens 10 of the lens driving device 6 into an electrical signal. The image sensor 19 is, for example, a CCD or a CMOS sensor IC. On the surface (upper surface) of the image sensor 19, a light receiving portion (not shown) in which a plurality of pixels are arranged in a matrix is formed. This light receiving portion is a region that forms an image of light incident from the lens driving device 6 and is also referred to as a pixel area.

  The image sensor 19 converts the subject image formed on the light receiving section (pixel area) into an electrical signal and outputs it as an analog image signal. That is, photoelectric conversion is performed in this light receiving unit. The operation of the image sensor 19 is controlled by a DSP (not shown), and the image signal generated by the image sensor 19 is processed by the DSP.

  The sensor cover 18 is configured to cover a part of the image sensor 19. The sensor cover 18 covers the image sensor 19 while avoiding the light receiving portion of the image sensor 19. An opening is formed in the sensor cover 18 to ensure an optical path. The area of the opening is larger than the area of the light receiving part of the image sensor 19 and the area of the surface of the glass plate 20. For this reason, the light receiving part of the image sensor 19 and the glass plate 20 are disposed in the opening. The opening serves as a light transmission region that transmits the light incident through the imaging lens 10 to the light receiving unit of the imaging element 19.

  In the sensor cover 18, the distance from the light receiving surface (upper surface) of the image sensor 19 to the upper surface of the sensor cover 18 is managed with high accuracy. The lower reference surface of the sensor cover 18 is a mounting surface that rests on the image sensor 19, and a gap may be formed between the substrate 9 side surface and the substrate 9.

  The glass plate 20 covers the light receiving portion of the image sensor 19 and is made of a translucent member. In the present embodiment, an infrared shielding film (IR cut film) may be formed on the surface of the glass plate 20. In this case, the glass plate 20 also has a function of blocking infrared rays. The glass plate 20 may be attached to the sensor cover 18 or may be overlapped and fixed on the image sensor 19 with an adhesive. In FIG. 3, the glass plate 20 is attached to the sensor cover 18 and is attached away from the image sensor 19. Thus, it is desirable to increase the distance from the image sensor 19 because the degree of influence of foreign matter adhering to the glass plate 20 (reflection on the sensor) is reduced.

  The substrate 9 has a patterned wiring (not shown). By this wiring, the substrate 9 and the sensor unit 8 (image sensor 19) are electrically connected to each other. The board 9 is, for example, a printed board or a ceramic board.

  As described above, in the imaging unit 7, the optical signal incident on the imaging element 19 is photoelectrically converted. Then, the converted electric signal passes through the substrate 9 and is input to a control circuit or the like of the camera module 100 (not shown) and is taken out as an image signal.

  In the camera module 100, the protrusion 22 may be formed at the light incident side end of the lens barrel 14. The protruding portion 22 is a portion protruding from the upper end portion of the lens barrel 14 in the direction opposite to the light traveling direction in the optical portion 5 (+ Z direction). The protrusion 22 serves as a grip for gripping the lens barrel 14 when adjusting the position of the imaging lens 10 described later.

(Assembly process)
Next, the assembly process of the camera module 100 in the manufacturing stage will be described with reference to FIGS. FIG. 4 is a flowchart illustrating an example of the assembly process of the camera module 100. FIG. 5 and FIG. 6 are diagrams for explaining the work situation during the assembly process. Here, in particular, a process of attaching the optical unit 5 to the lens holder 4 will be described.

  First, a plurality (two in this embodiment) of imaging lenses 10 are mounted on the lens barrel 14. Specifically, an adhesive is applied to a predetermined position of the lens barrel 14 (for example, directly below the protrusion 22 as shown in FIG. 3), and the imaging lens 10 is attached to that position. Thereafter, the adhesive is cured, whereby the imaging lens 10 is fixed to the lens barrel 14, and the optical unit 5 is created (S1). Then, the optical unit 5 is fitted into the lens holder 4 (S2).

  Next, the focus of the imaging lens 10 is adjusted (S3). This process will be specifically described with reference to FIG.

  A positioning device that determines the focal position of the imaging lens 10 is set on the upper part of the camera module (the camera module 100 before the optical unit 5 and the lens holder 4 are bonded) in which the optical unit 5 is inserted.

  The positioning device includes a focus adjustment chart 51 that is an object to be imaged at the time of focus position adjustment, and a focus position adjustment jig 52 for adjusting the focus of the imaging lens 10. The focal position adjusting jig 52 is a member that can hold the protrusion 22 of the lens barrel 14 (the upper end of the lens barrel 14) and rotate the lens barrel 14.

  The focus position adjusting jig 52 rotates the lens barrel 14 by a predetermined amount and feeds the lens barrel 14 out of the lens holder 4 (or screwed into the lens holder 4), thereby changing the position of the imaging lens 10 with respect to the lens holder 4. . Every time the position is changed, the focus adjustment chart 51 is imaged through the opening 53 of the focus position adjustment jig 52.

  The image data as the imaging result is output from the camera module 100 to an inspection device (not shown) that inspects the focal position. The inspection device analyzes the image data, calculates a focus evaluation value (for example, a contrast value), and displays it on a display device (not shown). The operator confirms the focus evaluation value (focus evaluation value) displayed on the display device, and finely adjusts the position of the imaging lens 10 so that the focus evaluation value takes a maximum value.

  That is, the operator determines the amount of movement (the amount of feeding or screwing) for moving the lens barrel 14 based on the focus evaluation value, and operates the focus position adjusting jig 52 to thereby move the lens barrel 14 by the amount of movement. The position of the imaging lens 10 is moved. Thereafter, as described above, the imaging of the focus adjustment chart 51 and the confirmation of the focus evaluation value obtained from the imaging result are repeated, whereby the position of the imaging lens 10 (distance between the lens barrel 14 and the imaging device 19). Adjustments are made. At this time, in the camera module 100, as shown in FIG. 3, the movable part of the lens driving device 6 is positioned on the infinity side (−Z direction) reference (INF side mechanical end, the above-described contact part). The position of the imaging lens 10 is adjusted and fixed so that the imaging lens 10 is positioned at infinity. This reference position is the starting position (operation start point) of the movable part at the time of a shipping test.

  When the focus evaluation value takes the maximum value, that is, when the in-focus state is obtained, as shown in FIG. 6, the operator removes the camera module 100 from the positioning device (that is, removes the focus position adjustment jig 52). remove). Then, after the adjustment of the focus is completed, the operator brings the tip of the needle 62 included in the dispenser 61 close to the top 4c of the lens holder 4 (the upper end of the lens barrel 14), and puts the adhesive 70 into the bonding region R. In order to flow in, the adhesive 70 is dropped from the tip portion to the dropping region 23 (S4). At this time, the operator adjusts the amount of air (that is, air pressure) sent to the dispenser 61 by operating a foot pedal (not shown) connected to the dispenser 61, and drops the adhesive 70.

  In addition, when the adhesive 70 is applied before the focus position is adjusted, the adhesive 70 applied during the focus position adjustment may be cured. For this reason, the adhesive 70 is applied after adjusting the focal position.

  When the adhesive 70 is cured, the lens barrel 14 is fixed to the lens holder 4. Thereby, the attachment to the lens holder 4 of the optical part 5 is completed (S5).

(Details of receiving part 1)
Next, based on FIG. 1, the specific structure of the receiving part 1 is demonstrated. 1A and 1B are views showing an example of the structure of a lens holder 4 provided with a receiving portion 1, wherein FIG. 1A is a sectional view thereof and FIG. 1B is a top view thereof.

  The receiving portion 1 is capable of receiving the adhesive 70 leaking outside the joining region R between the inner wall 4a of the lens holder 4 and the lens barrel 14, and as shown in FIG. 1 (a), the inner wall 4a. On the side. In addition, as shown in FIG. 1B, the receiving portion 1 has an adhesive 70 leaking from the joining region R to the bottom surface 2 side (base 17 side) of the lens holder 4 along the inner wall 4 a of the lens holder 4. It is a recessed part formed in the position which can accommodate. A hatched portion in the figure indicates a region where the adhesive 70 can be accommodated. Accordingly, it is possible to prevent the adhesive 70 from flowing (sagging) to the bottom surface 2 of the lens holder 4 and the glass plate 20. For example, unnecessary adhesion between the bottom surface 2 and the base 17, and an adhesive to the captured image. 70 reflection can be prevented. In other words, the receiving part 1 can accommodate (capture) the adhesive 70 unnecessary for bonding the lens holder 4 and the lens barrel 14 at a safe place.

  The lens holder 4 having the receiving portion 1 is made of resin and is molded by, for example, a mold. In this case, the lens holder 4 and the receiving part 1 are integrally formed. By this molding method, it is possible to form the lens holder 4 (receiving portion 1) that is inexpensive and highly accurate. For example, the receiving part 1 and the lens holder 4 may be formed separately and bonded to the lens holder 4 to provide the receiving part 1 on the lens holder 4.

  Further, as shown in FIG. 1A, the lens holder 4 is provided in the vicinity of the bottom surface 2 in contact with the base 17 (see FIG. 3). That is, the lens holder 4 is provided on the inner wall 4a (inner peripheral edge) of the lens holder 4 in the vicinity of the contact portion of the lens holder 4 (holder through hole) forming the hollow portion and in the vicinity of the bottom opening 3. Thereby, the adhesive 70 leaked from the joining region R under the influence of gravity can be reliably received, and is prevented from adhering to the bottom surface 2 (the surface of the base 17 facing the bottom surface 2). be able to.

  Further, the size of the receiving portion 1 is preferably large so that the adhesive 70 excessively applied to the joining region R can be reliably accommodated, but on the other hand, a part of the receiving portion 1 passes through the imaging lens 10. If it exists in the optical path of the light, a part of the receiving part 1 is included in the subject image. In this case, a part of the receiving unit 1 is reflected in the captured image, which affects the imaging of the subject. Therefore, as shown in FIG. 3, the receiving portion 1 is preferably provided at a position on the inner wall 4 a of the lens holder 4 that does not obstruct the optical path of light passing through the imaging lens 10.

  In the present embodiment, as shown in FIG. 1A, the outer wall 1 a of the receiving portion 1 is flush with the inner wall 14 a of the lens barrel 14. That is, the receiving part 1 is provided so that the said outer wall 1a and the inner wall 14a exist on the same plane. Although the size of the receiving portion 1 depends on the size of the camera module 100, it is assumed that the receiving portion 1 is provided at a position that does not interfere with the optical path, and is located outside the inner wall 14a of the lens barrel 14 (the lens barrel 14). (The axial center side).

(Contrast with comparative example)
Here, the advantage that the camera module 100 of this embodiment includes the receiving portion 1 will be described with reference to FIGS. 7 and 8. FIG. 7 is a diagram illustrating an example of a schematic cross-sectional view of a camera module 200 as a comparative example of the camera module 100, and FIG. 8 illustrates an example of a schematic cross-sectional view of a camera module 201 as a comparative example of the camera module 100. FIG. In addition, when the member of the camera module 100 and the member of the camera modules 200 and 201 are the same, the same member number is attached | subjected and the description is abbreviate | omitted.

  The camera module 200 shown in FIG. 7 is different in that a lens holder 40 having an inner wall 40a, an outer wall 40b, and a top 40c is provided instead of the lens holder 4. Specifically, the lens holder 40 is not provided with the receiving portion 1, and the inner wall 40a of the lens holder 40 is flat. The other structure and function of the lens holder 40 are the same as those of the lens holder 4.

  As described above, an adhesive having a relatively low viscosity is used. In addition, fixing the lens holder and the lens barrel is a manual operation using a dispenser and a foot pedal, so that a considerable amount of skill is required for the operator to drop an amount of adhesive suitable for the fixing. Is done. Moreover, a skilled worker does not always work. Furthermore, manufacturing variations may occur in the screw portions (male screw portion / female screw portion) formed in the lens holder and the lens barrel. Therefore, an excessive amount of adhesive more than that required for the fixation may be dropped onto the dropping region, and the adhesive may flow to a location other than the joining region between the lens holder and the lens barrel.

  In the case of the structure of FIG. 7, when the excessive adhesive 70 (more than the amount necessary for adhesion between the lens holder 40 and the lens barrel 14) is dropped onto the dropping region 23, the excess of the adhesive 70 is bonded to the joining region. There is a possibility that it leaks out from R, oozes out to the bottom side of the inner wall 40 a of the lens holder 40, and flows to the base 17.

  In this case, the adhesive 70 adheres between the base 17 and the bottom surface 2 of the lens holder 40, and the lens holder 40 adheres to the base 17 (or the adhesive 70 crosslinks and cures on the bottom surface 2 of the lens holder 40). As a result, there is a possibility that a malfunction occurs in that the autofocus function and the camera shake correction function of the camera module 200 are not exhibited during a shipping test. In addition, when it flows through the base 17 to the glass plate 20, the adhesive 70 adheres to the glass plate 20, which may affect the imaging result of the image sensor 19. That is, since the adhesive 70 is reflected in the captured image and causes an image abnormality, the camera module 200 may be determined to be defective.

  Further, the camera module 201 shown in FIG. 8 is different in that a lens holder 41 having an inner wall 41a, an outer wall 41b, and a top 41c is provided instead of the lens holder 4. Specifically, the lens holder 41 is not provided with the receiving portion 1, and the protrusion 42 is provided near the bottom surface 2 of the lens holder 41. The other structure and function of the lens holder 41 are the same as those of the lens holder 4.

  In this case, since the protrusion 42 is provided, the possibility that the adhesive 70 that has oozed out from the bonding region R flows to the base 17 side is reduced compared to the case of FIG. However, since the adhesive 70 has a relatively low viscosity as described above, the adhesive 70 may flow along the surface of the protruding portion 42 toward the base 17 side. Further, as shown in FIG. 8, the adhesive 70 that has flowed along the surface of the protrusion 42 may drip from the protrusion 42 and adhere to the glass plate 20. Therefore, in the camera module 201 as well, as in FIG. 7, there is a possibility that the autofocus function or the like may not be exhibited, and the imaging result of the imaging device 19 may be affected.

  On the other hand, since the camera module 100 of the present embodiment is provided with the receiving portion 1 in the lens holder 4, even if the adhesive 70 leaks from the joining region R as described above, The adhesive 70 can be accommodated. Thereby, the possibility of affecting the imaging result of the imaging element 19 by the adhesive 70 as described above and the possibility that the base 17 and the lens holder 4 are fixed can be reduced. Therefore, it is possible to reduce the possibility of the optical module function deterioration or malfunction caused by the adhesive 70 in the camera module 100.

[Embodiment 2]
A camera module 101 according to another embodiment of the present invention will be described below with reference to FIGS. 9 and 10. For convenience of explanation, members having the same functions as those described in the embodiment are given the same reference numerals, and descriptions thereof are omitted. FIG. 9 is a cross-sectional view taken along the line B-B (see FIG. 10B) showing an example of the camera module 101. FIGS. 10A and 10B are diagrams showing an example of the structure of the lens holder 24 included in the camera module 101. FIG. 10A is a cross-sectional view thereof, and FIG. 10B is a top view thereof.

  As shown in FIG. 9, the camera module 101 according to the present embodiment has a first groove portion (flow channel, a part of the flow channel) 25 a, a first groove instead of the lens holder 4 in which the receiving portion 1 is provided on the inner wall 4 a. The camera module 100 differs from the camera module 100 in that a lens holder 24 provided with a two-groove part (flow path) 25b and a reservoir part (second receiving part) 26 is provided.

(Lens holder 24)
The lens holder 24 has an inner wall 24a, an outer wall 24b, and a top 24c. The first groove portion 25a and the second groove portion 25b that can flow along the line 24b are provided.

  As shown in FIGS. 10A and 10B, the first groove portion 25 a is provided in a part of the top 24 c of the lens holder 24. In other words, the first groove part 25a (a part of the flow path) is formed in the top part 24c, which is a side surface of the lens holder 24 with respect to the outer wall 24b on the side where the adhesive 70 is dropped. Thereby, the adhesive 70 overflowing from the dripping area | region 23 can prevent reliably adhesion to the part (cover 12 or the imaging lens 10) which does not intend the application | coating of the adhesive 70. FIG.

  The second groove portion 25b is provided in a part of the outer wall 24b of the lens holder 24, and one end portion thereof is connected to one end portion of the first groove portion 25a. Thereby, the adhesive 70 that has flowed into the first groove portion 25a can be poured into the second groove portion 25b.

  In this embodiment, the 1st groove part 25a is provided in the total of four places, 1 each in the approximate center vicinity of 4 sides which the top 24c of the lens holder 24 has. In addition, the second groove portion 25b is provided at a total of four locations, one near the center of each of the four outer walls 24b of the lens holder 24. In the present embodiment, the width (the length in the Y direction) and the depth (the length in the Z direction) of the first groove 25a, and the width (the length in the Y direction) and the depth (X) of the second groove 25b. The length in the direction) is substantially the same.

  The number, arrangement position, shape and size of the first groove portion 25a and the second groove portion 25b are the same as the bottom portion (reservoir portion) of the adhesive 70 that has not flowed into the joining region R along the outer wall 24b of the lens holder 24. 26), and may be formed to such an extent that the function of the lens holder 24 is not impaired.

  The reservoir 26 is connected to the other end of the second groove 25b and can receive the adhesive 70 that has flowed through the second groove 25b. As shown in FIGS. 9 and 10, the reservoir portion 26 is formed on the upper surface (the plane on which the coil 16 is provided) of the bottom portion of the lens holder 24 by forming a groove along the outer wall 24 b over the entire circumference. It is configured. The reservoir portion 26 is provided on the upper surface of the bottom portion so as to be positioned between the outer wall 24b of the lens holder 24 and the coil 16 that is a driving component of the imaging lens 10.

  In the present embodiment, as shown in FIG. 9, the outer peripheral wall 26 a of the reservoir portion 26 is flush with the inner outer peripheral wall 13 a of the yoke 13. That is, the reservoir 26 is provided so that the outer peripheral wall 26a and the inner outer peripheral wall 13a exist on the same plane. In addition, the arrangement position, shape, and size of the reservoir portion 26 may be a structure that can capture the adhesive 70 that has flowed through the second groove portion 25b. For example, the outer peripheral wall 26a and the inner outer peripheral wall 13a are not flush with each other, and the outer peripheral wall 26a is closer to the image sensor 19 than the plane including the inner outer peripheral wall 13a (the reservoir portion 26 is more than the flush case). The reservoir 26 may be provided so that the volume of the reservoir 26 becomes smaller. Moreover, it does not need to be provided over the entire circumference along the outer wall 24b. For example, it may be provided only in the vicinity of the other end of the second groove 25b.

  The lens holder 24 is made of resin, and is formed by a mold, for example. In this case, the lens holder 24, the first groove portion 25a, the second groove portion 25b, and the reservoir portion 26 are integrally formed. By this molding method, the lens holder 24 (the first groove portion 25a, the second groove portion 25b, and the reservoir portion 26) that is inexpensive and highly accurate can be formed as in the first embodiment. In addition, you may form the 1st groove part 25a, the 2nd groove part 25b, the reservoir part 26, and the lens holder 24 separately. That is, the first groove portion 25a, the second groove portion 25b, and the reservoir portion 26 may not be grooves provided in the lens holder 24. In this case, for example, the first groove portion 25 a and the second groove portion 25 b may be replaced with a cylindrical member, the reservoir portion 26 may be replaced with a dish-shaped member, and these may be bonded to the lens holder 24.

(Contrast with comparative example)
Here, advantages of the camera module 101 of the present embodiment including the first groove portion 25a, the second groove portion 25b, and the reservoir portion 26 will be described with reference to FIG. FIG. 11 is a diagram illustrating an example of a schematic cross-sectional view of a camera module 200 as a comparative example of the camera module 100. The camera module 200 shown in FIG. 11 has the same structure as that shown in FIG. 7, but in FIG. 11, the adhesive 70 is bonded to the bonding region in a state where the lens driving device 6 fixes the optical unit 5 to the upper surface opening 11 side. It shows a state of being poured into R.

  The camera module 200 shown in FIG. 7 does not have the first groove 25a or the like instead of the lens holder 24, and the lens holder in which the outer wall 4b and the plane on which the coil 16 is provided are both flat. 40.

  The fitting of the male threaded portion of the lens barrel 14 and the female threaded portion of the lens holder 4 is good (because its width is narrow), so that the adhesive 70 remains in the dropping region even when the low-viscosity adhesive 70 is used. 23 may accumulate. In the case of the situation shown in FIG. 11, the excessively dropped adhesive 70 may overflow from the dropping region 23 and adhere the leaf spring 21 a (the top 40 c) and the inner wall of the cover 12. In this case, there is a possibility that an operation failure occurs in which the autofocus function and the camera shake correction function of the camera module 200 are not exhibited. Further, the overflowing adhesive 70 may flow into the imaging lens 10 side beyond the protrusion 22. In this case, the adhesive 70 may adhere to the imaging lens 10 and may affect the imaging result of the imaging element 19.

  On the other hand, in the camera module 101 of the present embodiment, since the first groove portion 25a and the second groove portion 25b are provided in the lens holder 24, the adhesive 70 does not flow into the joining region R as described above, but from the dropping region 23. Even in the case of leakage, the adhesive 70 can flow along the outer wall 24b of the lens holder 24. Thereby, the possibility of affecting the imaging result of the imaging element 19 by the adhesive 70 as described above and the possibility that the cover 12 and the lens holder 24 are fixed can be reduced. Therefore, it is possible to reduce the possibility that the function deterioration or malfunction of the optical mechanism caused by the adhesive 70 of the camera module 101 will occur.

  In the camera module 101, since the reservoir portion 26 is provided in the lens holder 24, the adhesive 70 that has flowed out of the second groove 25b more reliably adheres to a location where the adhesive 70 is not intended to be applied. Can be prevented.

  The first groove portion 25a and the second groove portion 25b do not necessarily have to be provided, and only the first groove portion 25a may be provided. Even in this case, the adhesive 70 that has flowed through the first groove portion 25a can flow along the outer wall 24b of the lens holder 24. Further, the second groove 25b is not necessarily provided to the bottom of the lens holder 24, and may be configured to be provided from the top 24c to the middle of the outer wall 24b. Further, the reservoir 26 is not necessarily provided.

[Embodiment 3]
The following will describe still another embodiment of the present invention with reference to FIGS. For convenience of explanation, members having the same functions as those described in the embodiment are given the same reference numerals, and descriptions thereof are omitted. FIG. 12 is a cross-sectional view taken along the line CC (see FIG. 13B) illustrating an example of the camera module 102. FIGS. 13A and 13B are views showing an example of the structure of the lens holder 27 provided in the camera module 102. FIG. 13A is a sectional view thereof, and FIG. 13B is a top view thereof.

  As shown in FIG. 12, the camera module 102 according to the third embodiment includes an inner wall 27a, an outer wall 27b, and a top portion 27c. The receiving portion 1 according to the first embodiment, the first groove portion 25a according to the second embodiment, and the second groove 2a. A lens holder 27 provided with a groove 25b and a reservoir 26 is provided.

  Therefore, according to the configuration of the camera module 102, (1) the influence of the adhesive 70 leaking from the joining region R on the function of the optical mechanism and the imaging result, and (2) the dropping region 23 not flowing into the joining region R. It is possible to reduce both the function of the optical mechanism and the influence on the imaging result of the adhesive 70 overflowing from the sheet. Therefore, it is possible to further reduce the possibility of the optical mechanism function degradation or malfunction caused by the adhesive 70.

[Embodiment 4]
The following will describe still another embodiment of the present invention with reference to FIGS. For convenience of explanation, members having the same functions as those described in the embodiment are given the same reference numerals, and descriptions thereof are omitted. FIG. 14 is a cross-sectional view taken along DD (see FIG. 15B) showing an example of the camera module 103. FIGS. 15A and 15B are views showing an example of the structure of the lens holder 28 provided in the camera module 103. FIG. 15A is a sectional view thereof, and FIG. 15B is a top view thereof.

  As shown in FIG. 14, the camera module 103 according to the fourth embodiment includes an inner wall 28 a, an outer wall 28 b, and a top portion 28 c, similar to the lens holder 27 of the third embodiment. The lens holder 28 provided with the first groove 25a, the second groove 25b, and the reservoir 26 of the second embodiment is provided.

  On the other hand, in the lens holder 28, the shape of the bottom of the lens holder 28 is different from the shape of the bottom of the lens holder 27. Specifically, in the lens holder 28, a part of the upper surface of the bottom portion of the lens holder 28 (a portion other than the outer peripheral end portion of the lens holder 28 where the coil 16 is mounted) is positioned near the center of the bonding region R. It has become a shape. That is, the lens holder 28 has a second outer wall 28 b ′ that supports the coil 16 together with the outer peripheral end of the lens holder 28, in addition to the outer wall 28 b. Thus, since the length of the outer wall 28b (length in the Z direction) is shorter than that of the lens holders 24 and 27, the second flow path 25b (Z direction) is compared with that of the camera modules 101 and 102. The length of the reservoir 26 is also formed on the upper surface opening 11 side.

  The camera module 103 is provided with a yoke 29 instead of the yoke 13. In the camera module 103, the lens holder 28 is a part of the yoke 29 so that the lens holder 28 can be accommodated in the lens driving device 6, and is provided substantially vertically inside the lens driving device 6 so as to face the bottom of the lens holder 28. The length of the inner outer peripheral wall 29a of the inner outer peripheral portion (the length in the Z direction) is shorter than the inner outer peripheral wall 13a of the yoke 13 of the first to third embodiments. Other configurations of the yoke 29 are the same as those of the yoke 13.

  Even in the configuration of the camera module 103, as in the third embodiment, (1) the influence of the adhesive 70 leaking from the bonding region R on the function of the optical mechanism and the imaging result, and (2) the flow into the bonding region R It is possible to reduce both the function of the optical mechanism and the influence on the imaging result of the adhesive 70 overflowing from the dropping region 23 without being performed.

  In the first to third embodiments, the coil 16 is supported only by the outer peripheral end portion of the lens holder 24. However, in the present embodiment, the outer peripheral end portion and the second outer wall 28b ′ are two. Supported in places. Therefore, since the area for fixing the coil 16 is increased as compared with the first to third embodiments, the stability of the coil 16 is improved, and the malfunction of the optical mechanism can be further reduced.

[Summary]
The camera module (100, 102, 103) according to aspect 1 of the present invention includes:
A camera module comprising a lens barrel (14) for holding an imaging lens (10) and a lens holder (4, 27, 28) for holding the lens barrel;
When the adhesive (70) is injected to fix the lens barrel to the lens holder, the lens holder is bonded to the inner wall (4a, 27a, 28a) of the lens holder and the lens barrel. It is the structure which has a receiving part which can receive the adhesive agent leaked to the outer side of the area | region (R).

  According to said structure, since the receiving part is provided in the lens holder, even if it is a case where the adhesive agent leaks from a joining area | region, the adhesive agent can be accommodated in a receiving part. As a result, the leaked adhesive travels along the inner wall of the lens holder and is not intended to be coated with the adhesive (for example, the bottom surface (2) of the lens holder or the image sensor (19) provided in the camera module). Can be prevented.

  For example, when the adhesive flows to the bottom surface of the lens holder, the lens holder may be bonded to a part (for example, the base 17) of the optical mechanism (for example, the lens driving device 6) that does not require bonding. There is. In this case, the lens holder is fixed to a part of the optical mechanism, and the predetermined operation of the optical mechanism is prevented. As a result, the optical mechanism including the lens holder has a predetermined function such as an autofocus function or a camera shake correction function. It will not be demonstrated. Moreover, when an adhesive adheres to an image pick-up element, there exists a possibility of affecting the image pick-up result.

  As described above, according to the configuration of one embodiment of the present invention, it is possible to prevent the adhesive from adhering to a portion where the adhesive is not intended to be applied by the receiving unit. The possibility of influence can be reduced. That is, in the camera module according to one embodiment of the present invention, the possibility that the optical mechanism is degraded or malfunctions due to the adhesive can be reduced.

Furthermore, the camera module according to aspect 2 of the present invention is the above aspect 1,
The receiving portion is preferably provided at a position on the inner wall of the lens holder that does not interfere with the optical path of light passing through the imaging lens.

  According to the above configuration, when the receiving unit is present in the optical path, it is possible to prevent a situation in which the receiving unit is included in the subject image and the imaging result is affected. In other words, the imaging quality can be maintained even with the configuration including the receiving unit.

Furthermore, the camera module which concerns on aspect 3 of this invention is the said aspect 2,
The receiving portion is preferably provided in the vicinity of the bottom surface (2) of the lens holder.

  In general, the adhesive is applied to the joining region using its own weight. That is, the adhesive flows from the vicinity of the top of the lens holder (4c, 27c, 28c) (the upper end including the upper surface opposite to the bottom) into the bonding region. According to said structure, the adhesive agent leaked to the bottom face direction from the joining area | region can be received reliably.

Furthermore, the camera module (101, 102, 103) according to the aspect 4 of the present invention includes:
A camera module comprising a lens barrel (14) for holding an imaging lens (10) and a lens holder (24, 27, 28) for holding the lens barrel,
The lens holder is a bonding region between the lens barrel and the inner wall (24a, 27a, 28a) of the lens holder, out of the adhesive (70) injected to fix the lens barrel to the lens holder. There are flow paths (first groove 25a and second groove 25b) through which the adhesive that has not flowed into (R) can flow along the outer walls (24b, 27b, 28b) of the lens holder.

  According to said structure, since the flow path is provided in the lens holder, even if it is a case where an adhesive agent does not flow in into a joining area | region, the adhesive agent can be poured along the outer wall of a lens holder. . That is, the adhesive that has not flowed in enters the inside of the lens holder and adheres to a portion (for example, the top of the lens holder (24c, 27c, 28c) or the imaging lens) where the adhesive is not intended to be applied. Can be prevented.

  For example, when the adhesive does not flow into the joining region and stays at the top of the lens holder, a part of the optical mechanism (for example, the lens driving device 6) that does not require adhesion (for example, the cover 12). And the lens holder may be bonded. In this case, the lens holder is fixed to a part of the optical mechanism, and the predetermined operation of the optical mechanism is prevented. As a result, the optical mechanism including the lens holder has a predetermined function such as an autofocus function or a camera shake correction function. It will not be demonstrated. Moreover, when an adhesive adheres to the imaging lens, the imaging result may be affected.

  As described above, according to the configuration of one embodiment of the present invention, it is possible to prevent the adhesive from adhering to a portion where the adhesive is not intended to be applied by the flow path. The possibility of influence can be reduced. That is, in the camera module according to one embodiment of the present invention, the possibility that the optical mechanism is degraded or malfunctions due to the adhesive can be reduced.

Furthermore, the camera module which concerns on aspect 5 of this invention is the said aspect 4,
It is preferable that a second receiving part (reservoir part 26) capable of receiving the adhesive flowing through the flow path is provided at the end of the flow path.

  According to said structure, the adhesive agent which flowed out from the flow path can be accommodated in a 2nd receiving part. Therefore, it is possible to more reliably prevent the adhesive flowing out from the flow path from adhering to a location where the adhesive is not intended to be applied.

Furthermore, the camera module which concerns on aspect 6 of this invention is the said aspect 4 or 5,
It is preferable that a part of the flow path is formed on a side surface (the tops 24c, 27c, 28c) of the lens holder with respect to the outer wall on the side where the adhesive is dropped.

  According to said structure, since the flow path is provided in the said side surface, the adhesion of the adhesive unnecessary for adhesion | attachment with a lens holder and a lens barrel is reliably prevented to the part which the application of the said adhesive is not intended. can do.

[Another expression of the present invention]
A camera module according to an aspect of the present invention is a camera module including a solid-state imaging device, an optical member barrel that forms a subject image on the solid-state imaging device, a holder and a circuit board on which the solid-state imaging device is mounted. The barrel and the holder are fixed by an adhesive, and have a mechanism capable of capturing excess adhesive during fixing.

[Additional Notes]
The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, a new technical feature can be formed by combining the technical means disclosed in each embodiment.

  The present invention can be applied to a camera module. In particular, it can be suitably used for mounting structures such as a camera-equipped mobile phone, a digital still camera, and a security camera in which an optical mechanism such as an image sensor, a wiring board, and a lens and a lens barrel are packaged.

1 Receiving part (receiving part)
2 bottom surface 4 lens holder 4a inner wall 4b outer wall 10 imaging lens 14 lens barrel 24 lens holder 24a inner wall 24b outer wall 24c top of head (side surface with respect to outer wall)
25a First groove (channel, part of channel)
25b Second groove (flow path)
26 Reservoir (second receiving part)
27 Lens holder 27a Inner wall 27b Outer wall 27c Top (side with respect to outer wall)
28 Lens holder 28a Inner wall 28b Outer wall 28c Top (side with respect to outer wall)
70 Adhesive 100 Camera Module 101 Camera Module 102 Camera Module 103 Camera Module R Bonding Area

Claims (5)

A camera module comprising a lens barrel that holds an imaging lens, and a lens holder that holds the lens barrel,
When the adhesive is injected to fix the lens barrel with respect to the lens holder, the lens holder has the adhesive leaked to the outside of the bonding region between the inner wall of the lens holder and the lens barrel. A camera module having a receiving part capable of receiving.   The camera module according to claim 1, wherein the receiving portion is provided at a position on the inner wall of the lens holder that does not interfere with an optical path of light passing through the imaging lens.   The camera module according to claim 1, wherein the receiving portion is provided near a bottom surface of the lens holder. A camera module comprising a lens barrel that holds an imaging lens, and a lens holder that holds the lens barrel,
The lens holder includes an adhesive that is not injected into a bonding region between the inner wall of the lens holder and the lens barrel, out of the adhesive injected to fix the lens barrel to the lens holder. A camera module having a flow path capable of flowing along an outer wall of a holder.   The camera module according to claim 4, wherein a second receiving portion capable of receiving an adhesive flowing through the flow path is provided at an end of the flow path.

Images