JP2006133281A - Reflection surface rocking mechanism and camera module using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reflection surface rocking mechanism capable of preventing distortion of a reflecting surface caused by generated heat from a drive coil of a simple constitution, and realizing miniaturization, while being equipped with a mechanism for adjusting the tilt angle of the reflecting surface. <P>SOLUTION: A prism holder 32 holding a prism 3, having a reflection surface 3a, is supported freely rockable on a base 31 fixed in a housing. One end of a permanent magnet 33 inserted in the drive coil fixed on the base 31 is fixed in the prism holder 32. A permanent magnet 34a is energized in a direction on a side opposite to the prism holder 32 with respect to the base 31 by a coil spring 36 wound in a compressed state between the base 31 and a flange part 35 provided at the other end of the permanent magnet 34a. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a reflecting surface swing mechanism and a camera module using the same, and more particularly to a drive mechanism of an optical axis control device used for a camera shake correction device of a camera module of a still camera or a video camera.

  Still cameras or video cameras are becoming smaller and lighter year by year. On the other hand, the number of pixels of the image sensor has increased, and the influence of camera shake has been clearly understood. Moreover, since the influence of camera shake has appeared due to the zoom function, it is necessary to correct it.

  FIG. 4 shows a camera module with a zoom function that does not include a camera shake correction mechanism. The schematic configuration of the camera module will be described with reference to FIG. As shown in FIG. 4, a first group 5 including a lens 2, a prism 3, and a lens 4 is fixed to the housing 1. The second group 8 including the lens 6 and the lens 7 is held by a lens holder 8a and has a structure that can be displaced in the optical axis direction by a focus drive mechanism (not shown). The third group 12 consisting of the lenses 9, 10, and 11 is held by the lens holder 12a and has a structure that can be displaced in the optical axis direction by a zoom drive mechanism (not shown), so that the overall magnification can be changed. Following these lens systems, the shutter mechanism 13, the fourth group lens 14, and the image sensor 15 are fixed to the housing 1.

  In the camera module having the above configuration, the light incident on the lens 2 is reflected by the prism 3 and passes through the second group lens 8, the third group lens 12 and the fourth group lens 14 and enters the image pickup device 15 to form an image.

  In such an optical system, a leading surface as shown in FIGS. 5 (a) and 5 (b) is used as a reflecting surface rocking mechanism for correcting camera shake by controlling the tilt of an optical element having a reflecting surface such as the prism 3. There is a technology (see, for example, Japanese Patent No. 2980599 (Patent Document 1)). FIG. 5A shows the position of the reflection surface swing mechanism 24 in the camera module, and FIG. 5B shows a detailed view of the reflection surface swing mechanism 24. In FIG. 5 (b), the magnetic circuit composed of the permanent magnet 17 and the yoke 18 is fixed to the housing 1, and is wound so that the magnetic field generated by the magnetic circuit and the strands are perpendicular to the paper surface. A rotational moment is applied to the reflecting surface 16 by the electromagnetic force generated by the current flowing through the coil 19, and the reflecting surface 16 is tilted around the center of the spherical seat 20. Here, the coil 19 is fixed so as to operate integrally with the reflecting surface 16. The holder 21 having the spherical seat 20 is urged so that the spherical seat 20 always contacts the housing 1 by a tension spring 23 connecting the screw 22 and the spherical seat 20.

5 (a) and 5 (b), the coil 19 is formed integrally with the reflecting surface 16, and heat generated by passing a current through the coil 19 is conducted to the reflecting surface 16, The uneven temperature distribution of the reflecting surface 16 causes the reflecting surface 16 to be distorted. As a result, there is a problem that the captured image is distorted. Further, in the adjustment of the optical system, the one shown in FIG. 5 needs to adjust the entire reflecting surface swinging mechanism 24 in order to adjust the tilt angle of the reflecting surface, and the adjustment mechanism becomes large, so that the size can be reduced. There is a problem that it is difficult.
Japanese Patent No. 2980599

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a reflecting surface swinging mechanism that can prevent the distortion of the reflecting surface due to heat generated from the drive coil with a simple configuration and can be downsized while having a mechanism for adjusting the inclination angle of the reflecting surface. There is to do.

  Another object of the present invention is to provide a small camera module that can easily prevent distortion of a captured image by using the reflection surface swing mechanism.

  In order to achieve the above object, the reflection surface swing mechanism of the present invention includes an optical element having a reflection surface for deflecting a light beam passing through an optical system, and light of reflected light by swinging the reflection surface of the optical element. A reflecting surface swinging mechanism having a swinging means for controlling an axis, wherein the swinging means is supported by a swingable base on a base fixed to a housing holding the optical system, and An optical element holder for holding an optical element, a drive coil fixed to the base, a permanent magnet inserted into the drive coil and fixed at one end to the optical element holder, and the permanent magnet to the base And an urging member for urging in the direction opposite to the optical element holder.

  According to the reflection surface oscillating mechanism having the above configuration, when a current is passed through the drive coil fixed to the base, the permanent magnet inserted in the drive coil according to the current direction of the drive coil, for example, for an optical element It immerses against the urging force of the urging member on the holder side or protrudes in cooperation with the urging force of the urging member on the flange side. Then, the optical element holder to which one end of the permanent magnet is fixed is pushed or pulled, and the optical element holder that is swingably supported by the base is rotated. The reflection surface of the held optical element is swung. As described above, since the drive coil is provided on a separate base away from the optical element holder, the distortion of the reflection surface due to heat generated from the drive coil can be prevented with a simple configuration, and the inclination of the reflection surface can be prevented. Miniaturization is possible with an angle adjustment mechanism.

  In one embodiment, the reflecting surface swing mechanism includes a flange portion provided at the other end of the permanent magnet, and the biasing member is provided between the flange portion and the base. The coil spring is wound in a compressed state.

  According to the reflecting surface swinging mechanism of the above embodiment, the permanent magnet is attached to the base by the coil spring wound in a compressed state between the flange portion provided at the other end of the permanent magnet and the base. Since the biasing is performed in the direction opposite to the optical element holder, the space can be effectively used to reduce the size.

  In one embodiment, the reflecting surface swing mechanism includes four sets of drive units each including the drive coil, the permanent magnet, and the biasing member, and each drive unit is arranged in a diamond shape on the base. It is characterized by.

  According to the reflecting surface oscillating mechanism of the above embodiment, the angle of the optical element holder can be controlled almost independently for each pair of driving units located at the opposite vertices of the rhombus, and the optical elements can be controlled without interfering with each other The angle of the reflection surface of the element can be accurately controlled.

  In one embodiment, the reflecting surface swing mechanism includes the protrusion provided on either the base or the optical element holder, the protrusion protruding toward the other, and the base or the optical element. An optical element holder is provided on one of the other element holders and has a recess with which the protrusion comes into contact, and the optical element holder can swing on the base with the tip of the protrusion coming into contact with the recess as a fulcrum. It is supported by.

  According to the reflecting surface swinging mechanism of the above embodiment, the optical element holder is swingably supported at one point by the base fixed to the housing, with the tip of the protrusion abutted in the recess as a fulcrum. The optical element holder can be swung in any direction without a complicated mechanism.

  In one embodiment, the reflecting surface swing mechanism is configured such that the swinging means is inserted into a through hole provided in the base, and one end is screwed into a screw hole provided in the optical element holder. And a tilt adjusting spring wound in a compressed state between the other end of the tilt adjusting screw and the base.

  According to the reflection surface swing mechanism of the above embodiment, one end of the inclination adjusting screw inserted into the through hole provided in the base is screwed into the screw hole provided in the optical element holder, and the inclination By winding the tilt adjustment spring in a compressed state between the other end of the adjustment screw (for example, the screw head) and the base, the tilt adjustment spring biases the optical element holder toward the base side. The force to be adjusted can be adjusted by a tilt adjusting screw.

  In one embodiment, the reflecting surface swinging mechanism includes four sets of tilt adjusting units each including the tilt adjusting screw and the tilt adjusting spring, and each tilt adjusting unit is arranged in a diamond shape on the base. The intersection of the diagonal lines of the rhombus substantially coincides with the protrusion.

  According to the reflecting surface swing mechanism of the above embodiment, the angle of the optical element holder can be controlled almost independently for each pair of inclination adjusting portions located at the opposite vertices of the rhombus, without interfering with each other's control. Since the angle of the reflection surface of the optical element can be accurately adjusted, the efficiency of the adjustment work can be improved.

  In one embodiment, the reflecting surface swing mechanism includes a fixing means in which the swing means is inserted into a through hole provided in the base, and one end is screwed into a screw hole provided in the optical element holder. A screw and a protrusion formed in the vicinity of the through hole of the base to prevent the fixing screw from entering the through hole of the base by a predetermined amount or more, and the inclination adjusting screw; There are two sets of tilt adjusting parts with one set of the spring for tilt adjusting, two sets of fixing parts with one set of the fixing screw and the convex part, and the tilt adjusting part and the fixed part are opposed to each other. In this way, the base is arranged in a rhombus, and the intersection of diagonal lines of the rhombus substantially coincides with the protrusion.

  According to the reflection surface oscillating mechanism of the above embodiment, the angle of the optical element holder can be controlled almost independently for each pair of the inclination adjusting portion and the fixing portion located at the opposite vertices of the rhombus. Since the angle of the reflection surface of the optical element can be adjusted accurately without the need for adjustment, the efficiency of the adjustment work can be improved. Further, the angle of the reflection surface of the optical element can be adjusted with only two of the inclination adjusting screws, and the efficiency of the adjustment work can be further improved.

  The camera module of the present invention is characterized by using any one of the reflecting surface swing mechanisms described above.

  According to the camera module having the above configuration, a small camera module that can easily prevent distortion of a captured image by using the reflection surface swing mechanism that can prevent and reduce the size of the reflection surface with a simple configuration. realizable.

  As apparent from the above, according to the reflecting surface swing mechanism of the present invention and the camera module using the reflecting surface swing mechanism, the drive coil as the heat source is provided on the base at a location away from the reflecting surface. Is not transmitted to the reflecting surface, and the temperature distribution unevenness of the reflecting surface does not occur, so that distortion on the reflecting surface of the optical element can be eliminated and good imaging can be performed.

  Further, the tilt adjusting screw and the tilt adjusting spring for adjusting the tilt of the reflecting surface of the optical element can be built in the reflecting surface swinging mechanism, so that the whole can be made compact.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a reflecting surface swing mechanism of the present invention and a camera module using the same will be described in detail with reference to embodiments shown in the drawings.

(First embodiment)
FIG. 1 is a schematic configuration diagram of a camera module with a camera shake correction function using the reflecting surface swing mechanism of the first embodiment of the present invention. The camera module with a camera shake correction function using the reflecting surface swing mechanism of the first embodiment has the same configuration as the camera module shown in FIG. 4 except for the reflecting surface swing mechanism. The same reference numerals are assigned and the description is omitted.

  The camera module with a camera shake correction function shown in FIG. 1 is a reflection surface swing mechanism that changes the tilt of a reflective optical element including a prism 3 as an example of an optical element and a lens 4 bonded to the prism 3 for camera shake correction. 30 is installed. In FIG. 1, the base 31 of the reflecting surface swing mechanism is fixed to the housing 1 of the camera module.

  2A to 2C are detailed views of a part in FIG. 1, and FIG. 2A shows a view seen from an arrow E in FIG. 2B shows a cross section seen from the line IIB-IIB in FIG. 2A, and FIG. 2C shows a cross section seen from the line IIC-IIC in FIG. 2A. Hereinafter, the reflecting surface swing mechanism 30 will be described with reference to FIGS. 2A to 2C.

  In FIG. 2B, the prism 3 having the reflecting surface 3a is fixed to a prism holder 32 as an example of an optical element holder by an adhesive or the like. One end of each of the permanent magnets 33 a, 33 b, 33 c, 33 d magnetized in the axial direction is fixed to the prism holder 32, and a protrusion 37 is formed at a substantially central portion of the prism holder 32. Further, the base 31 is provided with a recess 38 at a position facing the protrusion 37 of the prism holder 32. Preload is applied by a coil spring 36 as an example of a biasing member wound between a flange portion 35 provided on the permanent magnet 33 and the base 31 so that the projection 37 of the prism holder 32 is biased. ing. The protrusion 37 of the prism holder 32 and the recess 38 of the base 31 form a fulcrum for tilting the prism holder 32.

  2A and 2B, the base 31 has drive coils 34a, 34b, 34c, 34d formed therein, and permanent magnets 33a, 33b are formed in the central opening 39 of the drive coils 34a-34d. 33c, 33d. By passing a current through the drive coils 34a to 34d, the permanent magnets 33a to 33d magnetized in the axial direction generate axial electromagnetic force. The inclination angle of the prism 3 is determined by the balance between the electromagnetic force and the force of the coil spring 36. In this way, the current flowing through the drive coils 34a to 34d is controlled to adjust the inclination of the prism 3 to a predetermined angle.

  Here, as shown in FIGS. 2A and 2B, a drive unit including the permanent magnet 33a, the drive coil 34a, and the coil spring 36 as a set, and a drive unit including the permanent magnet 33b, the drive coil 34b, and the coil spring 36 as a set. And a drive part including a permanent magnet 33c, a drive coil 34c and a coil spring 36 as a set, and a drive part including a permanent magnet 33d, the drive coil 34d and the coil spring 36 as a set, and a substantially rhombus whose diagonals are substantially orthogonal. And the intersection of the diagonal lines is arranged on the base 31 so as to substantially coincide with the recess 38 (projection 37). As a result, the angle of the prism 3 determined by the permanent magnet 33a, the drive coil 34a and the permanent magnet 33c, and the drive coil 34c, and the angle of the prism 3 determined by the permanent magnet 33b, the drive coil 34b and the permanent magnet 33d, and the drive coil 34d are respectively The prism 3 can be controlled almost independently, and the angle of the prism 3 can be accurately controlled without interfering with the mutual control. For example, the current is passed through the drive coil 34a to cause the permanent magnet 33a to protrude toward the prism holder 32, while the current is passed through the drive coil 34c to cause the permanent magnet 33c to protrude toward the flange portion 35 to thereby drive the two drives. The prism holder 32 is rotated along a plane passing through the central axes of the coils 34a and 34c. Similarly, the prism holder 32 is rotated along a plane passing through the central axes of the two drive coils 34b and 34d.

  Next, the initial adjustment of the prism 3 will be described.

  At the time of assembling the camera module with the camera shake correction function, the prism 3 needs to be adjusted in angle in order to optimize the optical performance of the camera module.

  In the reflecting surface swing mechanism 30 of the first embodiment, as shown in FIGS. 2A and 2C, screw holes 32a are provided at four locations of the prism holder 32, and the screw holes 32a serve as an example of tilt adjusting screws. Adjustment screws 40e, 40f, 40g, and 40h are screwed together. Also, pressing springs 41e, 41f, 41g, and 41h, which are examples of inclination adjusting springs, are provided between the heads of the adjusting screws 40e to 40h and the base 31. The adjustment screws 40e to 40h and the pressing springs 41e to 41h constitute four sets of inclination adjusting portions. That is, by arranging these four sets of inclination adjusting portions so that the diagonal lines of the rhombus (quadrangle in FIG. 2A) are substantially orthogonal, the direction and adjustment that can be adjusted by the adjusting screws 40e and 40g and the pressing springs 41e and 41g The directions that can be adjusted by the screws 40f and 40h and the pressing springs 41f and 41h are substantially orthogonal. For example, by tightening one of the adjusting screws 40e and 40g and loosening the other, the prism holder 32 rotates along a plane passing through the centers of the two adjusting screws 40e and 40g. Similarly, by tightening one of the adjusting screws 40f and 40h and loosening the other, the prism holder 32 rotates along a plane passing through the centers of the two adjusting screws 40f and 40h.

  Thus, the angle of the prism 3 can be adjusted almost independently, and highly efficient adjustment work is possible.

  According to the reflection surface oscillating mechanism having the above configuration, since the drive coils 34a to 34d are provided on the separate base 31 apart from the prism holder 32, the reflection surface 3a is generated by heat generated from the drive coils 34a to 34d. Can be prevented, and the size can be reduced with a simple configuration.

  Further, the permanent magnets 33a to 33d are attached to the base 31 by a coil spring 36 wound in a compressed state between the flange portion 35 provided at the other end of the permanent magnets 33a to 33d and the base 31. Since the biasing is performed in the direction opposite to the prism holder 32, the space can be effectively used to reduce the size.

  Further, using four sets of drive units each including the drive coil, the permanent magnet, and the coil spring, each drive unit is arranged in a diamond shape on the base 31, and each drive unit pair located at the opposite vertex of the rhombus The angle of the prism holder 32 can be controlled almost independently, and the angle of the reflecting surface 3a of the prism 3 can be accurately controlled without interfering with the mutual control.

  Further, the prism holder 32 is supported at a single point by the base 31 fixed to the housing, with the tip of the projection 37 abutted in the recess 38 as a fulcrum, so that a complicated mechanism is not used. The prism holder 32 can be swung in all directions.

  Also, one end of the adjusting screws 40e to 40h inserted into the through hole 31a provided in the base 31 is screwed into the screw hole 32a provided in the prism holder 32, and the other screw of the adjusting screws 40e to 40h is screwed. By compressing the pressing springs 41e to 41h between the head and the base 31, the force for attracting the prism holder 32 to the base 31 side by the urging force of the pressing springs 41e to 41h is adjusted by the adjusting screws 40e to 40h. It becomes possible to do.

  In addition, using four sets of the tilt adjusting portions each including the adjusting screw and the pressing spring, each tilt adjusting portion is arranged in a rhombus shape on the base 31, and the intersection of the diagonal lines of the rhombus substantially coincides with the projecting portion 37. By doing so, the angle of the prism holder 32 can be controlled almost independently for each pair of inclination adjusting portions located at the opposite vertices of the rhombus, and the reflecting surface 3a of the prism 3 can be accurately angled without interfering with the mutual control. The efficiency of the adjustment work can be improved.

  Further, by using the reflecting surface swing mechanism 30 that can prevent distortion and reduce the size of the reflecting surface 3a of the prism 3 with a simple configuration, a downsized camera module that can easily prevent distortion of the captured image is realized. be able to.

(Second Embodiment)
Next, a reflecting surface swing mechanism according to a second embodiment of the present invention will be described with reference to FIGS. 3A to 3C. FIG. 3A shows a view from the arrow E in FIG. 3B shows a cross section taken along line IIIB-IIIB in FIG. 3A, and FIG. 3C shows a cross section taken along line IIIC-IIIC in FIG. 3A. The reflecting surface swing mechanism of the second embodiment has the same configuration as the reflecting surface swing mechanism of the first embodiment except for the convex portion of the base, and the same reference numerals are assigned to the same components. Description is omitted.

  3A and 3C, the base 31 is provided with two cylindrical convex portions 42e and 42f, in which the pressing springs 41e and 41f shown in the first embodiment are omitted, and the adjustment screws 40e, 40f is a structure to be tightened.

  In this way, two adjacent sets of adjusting screws 40e to 40h of the sets of adjusting screws 40e to 40h and pressing springs 41e to 41h are prevented from entering a through hole 31a of the base 31 by a predetermined amount or more. By forming the convex portions 42e and 42f in the vicinity of the through hole 31a of the base 31, the angle of the reflecting surface 3a of the prism 3 can be adjusted with only two of the adjusting screws 40g and 40h. Can be further improved.

  Further, the reflecting surface swing mechanism of the second embodiment has the same effect as the reflecting surface swing mechanism of the first embodiment.

  In the first and second embodiments, the drive coils 34a to 34d, the permanent magnets 33a to 33d and the coil springs are set as four sets of drive units, and the drive units are arranged in a diamond shape. The drive unit including one set of the magnet and the coil spring is not limited to four sets, and may be one or two sets depending on the inclination direction of the reflection surface of the optical element, or three sets. Three sets of driving units may be arranged in a regular triangle shape.

  In the first and second embodiments described above, the reflecting surface swing mechanism using the coil spring 36 that is compressed between the flange portion 35 and the base 31 has been described. The biasing member that biases in the direction opposite to the side is not limited to this, and other elastic members such as a leaf spring and rubber may be used.

  The present invention can be used not only for a camera shake correction mechanism of a camera module but also for a laser beam deflecting device as a small and easily adjustable structure.

FIG. 1 is a schematic configuration diagram of a camera module with a camera shake correction function using the reflecting surface swing mechanism of the first embodiment of the present invention. FIG. 2A is a detailed view of the reflecting surface swing mechanism. 2B is a cross-sectional view taken along line IIB-IIB in FIG. 2A. 2C is a cross-sectional view taken along line IIC-IIC in FIG. 2A. FIG. 3A is a detailed view of the reflecting surface swing mechanism of the second embodiment of the present invention. 3B is a cross-sectional view taken along line IIIB-IIIB in FIG. 3A. 3C is a cross-sectional view taken along line IIIC-IIIC in FIG. 3A. FIG. 4 is a schematic configuration diagram of a camera module having no camera shake correction mechanism. FIG. 5 is an explanatory diagram of a conventional reflecting surface swing mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Housing 2, 4, 6, 7, 9, 10, 11, 14 ... Lens 3 ... Prism 3a ... Reflecting surface 5 ... 1st group 8 ... 2nd group 8a ... Lens holder 12 ... 3rd group 12a ... Lens holder DESCRIPTION OF SYMBOLS 13 ... Shutter mechanism 15 ... Image pick-up element 16 ... Reflective surface 17 ... Permanent magnet 18 ... Yoke 19 ... Coil 20 ... Spherical seat 21 ... Holder 22 ... Screw 30 ... Reflective surface rocking | fluctuation mechanism 31 ... Base 31a ... Through-hole 32 ... Prism holder 32a ... Screw hole 33a, 33b, 33c, 33d ... Permanent magnet 34a, 34b, 34c, 34d ... Drive coil 35 ... Flange 36 ... Coil spring 37 ... Projection 38 ... Recess 39 ... Opening 40e, 40f, 40g, 40h ... Adjustment screw 41e, 41f, 41g, 41h ... Spring for pressing 42e, 42f ... Projection

Claims (8)

A reflecting surface rocking mechanism comprising an optical element having a reflecting surface for deflecting a light beam passing through the optical system and a rocking means for controlling the optical axis of the reflected light by rocking the reflecting surface of the optical element. And
The swing means is
A base fixed to a housing holding the optical system;
An optical element holder that is supported by the base in a swingable manner and holds the optical element;
A drive coil fixed to the base;
A permanent magnet inserted into the drive coil and fixed at one end to the optical element holder;
And a biasing member that biases the permanent magnet in a direction opposite to the optical element holder with respect to the base. The reflecting surface swing mechanism according to claim 1,
The swing means is
Having a flange portion provided at the other end of the permanent magnet;
The reflecting surface swinging mechanism, wherein the biasing member is a coil spring wound in a compressed state between the flange portion and the base. The reflecting surface swing mechanism according to claim 1 or 2,
4. A reflecting surface swinging mechanism characterized in that there are four sets of driving units each including the driving coil, the permanent magnet, and the biasing member, and each driving unit is arranged in a diamond shape on the base. The reflecting surface swing mechanism according to any one of claims 1 to 3,
The swing means is
A protrusion provided on one of the base or the optical element holder and protruding toward the other;
Provided on the other side of the base or the optical element holder, and having a recess with which the protrusion comes into contact,
A reflecting surface swinging mechanism characterized in that the optical element holder is swingably supported by the base with the tip of the projecting portion in contact with the recess as a fulcrum. The reflecting surface swing mechanism according to claim 4,
The swing means is
An inclination adjusting screw that is inserted into a through hole provided in the base, and one end of which is screwed into a screw hole provided in the optical element holder;
A reflecting surface swinging mechanism comprising an inclination adjusting spring wound in a compressed state between the other end of the inclination adjusting screw and the base. The reflecting surface swing mechanism according to claim 5,
There are four sets of tilt adjusting portions, each of which includes the tilt adjusting screw and the tilt adjusting spring. Each tilt adjusting portion is arranged in a rhombus on the base, and the intersection of the diagonal lines of the rhombus is formed on the protrusion. A reflecting surface swinging mechanism characterized by being substantially coincident. The reflecting surface swing mechanism according to claim 5,
The swing means is
A fixing screw inserted into a through-hole provided in the base, and having one end screwed into a screw hole provided in the optical element holder;
A convex portion that is formed in the vicinity of the through hole of the base and prevents the fixing screw from entering the through hole of the base by a predetermined amount or more,
There are two sets of tilt adjusting parts that include the tilt adjusting screw and the tilt adjusting spring as one set, and there are two sets of fixing parts that include the fixing screw and the convex part as one set. A reflecting surface oscillating mechanism characterized in that the fixing portion is arranged in a rhombus shape on the base so as to face each other, and an intersection of diagonal lines of the rhombus substantially coincides with the protruding portion.   A camera module using the reflecting surface swinging mechanism according to claim 1.

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