JP7057210B2 - Optical unit - Google Patents

Description

The present invention relates to an optical unit with a shake correction function mounted on a mobile phone with a camera or the like.

As an optical unit having this kind of shake correction function, the optical unit described in Patent Document 1 can be mentioned. This optical unit has a function of correcting rolling (runout around the optical axis) in addition to pitching (vertical runout) and yawing (horizontal runout).
Specifically, as a mechanism for correcting rolling, as shown in FIG. 2 and the like, the first support mechanism 80 that rotatably supports the movable body 100 on the outside of the movable body 100 around the optical axis L. And a magnetic drive mechanism 600 for rolling that rotates the movable body 100 around the optical axis L. The first support mechanism 80 includes a mechanical spring 85 that rotatably supports the movable body 100 around the optical axis L by a ball bearing 81, and further holds the movable body 100 elastically supported by the fixed body 60. There is. After the movable body 100 receives a rotational force from the rolling magnetic drive mechanism 600 by rolling and rotates in a direction for compensating for the rolling, when the rotational force is released, the movable body 100 is initially subjected to the spring force of the mechanical spring 85. Return to position.

JP 2015-82072A

In the conventional optical unit, the first support mechanism as a mechanism for performing rolling correction has a structure in which two members, a ball bearing and a mechanical spring, are arranged on the back side of the optical module. Therefore, there is a problem that the miniaturization of the optical unit in the optical axis direction (rear side) is hindered.

An object of the present invention is to realize miniaturization of an optical unit provided with a mechanism for correcting rolling.

In order to solve the above problems, the optical unit according to the first aspect of the present invention includes a movable body including an optical module, a fixed body, and the movable body is rotated about the optical axis of the optical module with respect to the fixed body. A rolling support mechanism that supports the movable body and a rolling drive mechanism that rotates the movable body around the optical axis are provided, and the rolling support mechanism includes the movable body and the fixed body in a direction intersecting the optical axis. It is characterized by being provided with an elastic member which is located between the two and is arranged at a plurality of locations around the optical axis and rotatably supports the movable body around the optical axis.

According to this aspect, the rolling support mechanism is arranged at a plurality of positions around the optical axis at positions between the movable body and the fixed body in a direction intersecting the optical axis, and illuminates the movable body. It is equipped with an elastic member that rotatably supports around the axis. That is, the elastic member of this embodiment functions as a support member that rotatably supports the movable body around the optical axis with one member thereof, and as a spring member that returns the movable body rotated by rolling correction to the initial position. It has two functions at the same time. Therefore, it is not necessary to use a conventional bearing such as a bearing. Therefore, it is possible to easily realize the miniaturization of the optical unit provided with the mechanism for correcting the rolling. In particular, miniaturization in the optical axis direction can be realized.

A second aspect of the present invention is characterized in that, in the optical unit of the first aspect, the elastic member is arranged at equally divided positions around the optical axis.

According to this aspect, the elastic members are arranged at equally divided positions around the optical axis. As a result, the movable body can be evenly supported around the optical axis, and balanced rotation can be realized when the movable body rotates around the optical axis.

A third aspect of the present invention is characterized in that, in the optical unit of the first aspect or the second aspect, the elastic members are arranged at at least three places around the optical axis.

According to this aspect, the elastic member is arranged at least three places around the optical axis. This makes it possible to specify the rotation direction of the movable body without using a bearing such as a conventional bearing. In addition, the effects of the first aspect and the second aspect can be obtained in a compact structure.

A fourth aspect of the present invention is the optical unit according to any one of the first to third aspects, wherein the elastic member is composed of a leaf spring that bends and deforms around an optical axis, and the leaf spring. Is characterized in that one end is fixed to the first fixed portion on the fixed body side and the other end is fixed to the second fixed portion on the optical module side.

According to this aspect, since the elastic member is composed of leaf springs that bend and deform around the optical axis, it is possible to compactly configure the rolling support mechanism by arranging a plurality of leaf springs around the optical axis. ..
Further, since one end of the leaf spring is fixed to the first fixed portion on the fixed body side and the other end is fixed to the second fixed portion on the optical module side, the rotation direction around the optical axis. It can be stably elastically deformed.

A fifth aspect of the present invention is that in the optical unit of the fourth aspect, the leaf spring has a plate thickness direction in the fixed state facing the rotation direction of the movable body around the optical axis. It is characterized by.

Here, in the present specification, "facing the rotation direction" in "the direction of the plate thickness faces the rotation direction around the optical axis of the optical module" means exactly the rotation direction. It is used in the sense that it is not necessary. That is, there is a range in the direction as long as the function of rotatably supporting the optical module around the optical axis does not become unstable.

According to this aspect, in the fixed state of the leaf spring, the direction of the plate thickness is directed to the rotation direction of the movable body around the optical axis. In other words, the direction of the leaf surface of the leaf spring is the direction toward the optical axis. As a result, the leaf spring forming the elastic member firmly supports the movable body in a state in which the movable body is firmly supported so as not to be inadvertently displaced in an optical axis direction different from the rotation direction or a direction intersecting the optical axis. It can be smoothly deformed in the direction of rotation around it. Therefore, smooth and balanced rotation can be realized when the movable body rotates about the optical axis.

A sixth aspect of the present invention is the optical unit of the fourth aspect or the fifth aspect, wherein the leaf spring has a radial first length along the optical axis where the first length intersects the optical axis. It is characterized by being larger than 2 lengths.

According to this aspect, the leaf spring has a first length along the optical axis that is larger than a second length in the radial direction that intersects the optical axis. As a result, the leaf spring can be stably elastically deformed in the rotational direction around the optical axis.

A seventh aspect of the present invention is the optical unit according to any one of the fourth to sixth aspects, wherein the leaf spring has a U-shape at a portion between the one end and the other end. It is characterized by being formed.

According to this aspect, since the portion between the one end portion and the other end portion of the leaf spring is formed in a U shape, the effect of any one of the fourth to sixth aspects is achieved. Can be effectively obtained.

An eighth aspect of the present invention is the optical unit according to any one of the fourth to seventh aspects, in which the movable body is allowed to move in the rolling direction between the movable body and the fixed body. An intermediate frame body for connecting the two is provided, one end of the leaf spring is fixed to a first fixed portion formed on the intermediate frame body, and the other end of the leaf spring is the optical module. It is characterized in that it is fixed to a second fixed portion formed in a holder frame that holds and moves integrally with the optical module.

According to this aspect, by providing an intermediate frame body between the movable body and the fixed body, it becomes possible to detect not only the runout in the rolling direction but also the runout in the pitching direction and the runout in the yawing direction. It will be possible to handle multiple corrections in different directions of pitching and rolling.

A ninth aspect of the present invention is the optical unit according to any one of the first to eighth aspects, wherein the rolling magnetic drive mechanism is composed of a pair of a coil and a magnet, and the coil and the magnet are used. One is arranged on the fixed body side, and the other is arranged on the movable body side.

According to this aspect, the rolling magnetic drive mechanism is composed of a pair of a coil and a magnet, one of the coil and the magnet is arranged on the fixed body side, and the other is arranged on the movable body side. This makes it possible to realize miniaturization in the optical axis direction.

A tenth aspect of the present invention is the movable optical unit according to any one of the first to ninth aspects so as to be swingable around a first axis intersecting the optical axis direction of the optical module. A gimbal provided with a first support portion that supports the body and a second support portion that is swingably supported by a member on the fixed body side around a second axis that intersects the optical axis direction and the first axis direction. The gimbal mechanism includes a mechanism and a runout correction drive mechanism for driving the movable body around the first axis and the second axis, and the gimbal mechanism is one of the subject side and the opposite side of the subject of the optical module. A gimbal frame portion arranged on the side, a first support extending portion extending in the optical axis direction from the gimbal frame portion and having the first support portion, and an optical axis direction from the gimbal frame portion. It is characterized in that it is provided with an extension portion for a second support portion which is extended to the second support portion and has the second support portion.

According to this aspect, the gimbal frame portion is arranged on one side of the subject side and the opposite side of the subject of the optical module. That is, since the gimbal mechanism does not surround the entire side surface of the movable body including the optical module, it is the extension portion for the first support portion and the extension portion for the second support portion that exist around the side surface. Therefore, it is possible to reduce the size of the gimbal mechanism in the direction intersecting the optical axis direction (side surface side) as compared with the conventional gimbal mechanism.
Further, the gimbal mechanism includes a first support portion that swingably supports the movable body around the first axis, and is fixed around the second axis intersecting the optical axis direction and the first axis direction. The structure is provided with a second support portion that is swingably supported by a member on the body side. With this support structure, in addition to being able to reduce the size, the degree of freedom in arranging the runout correction drive mechanism that drives the movable body around the first axis and the second axis is increased, and the overall size is increased. It is possible to increase the size of the magnetic circuit without using it, thereby improving the drive torque and reducing the power consumption.

An eleventh aspect of the present invention is characterized in that, in the optical unit of the tenth aspect, the gimbal frame portion has a plate shape.

According to this aspect, since the gimbal frame portion has a plate shape, it is possible to reduce the size in the optical axis direction as well.

A twelfth aspect of the present invention is characterized in that, in the optical unit of the eleventh aspect, at least one of the extension portion for the first support portion and the extension portion for the second support portion is plate-shaped. do.

According to this aspect, since at least one of the extension portion for the first support portion and the extension portion for the second support portion has a plate shape, the size of the extension portion is further reduced in the direction intersecting the optical axis direction (side surface side). Can be realized.

A thirteenth aspect of the present invention is an optical unit according to any one of the tenth to twelfth aspects, wherein the first support portion is attached to the movable body of the extension portion for the first support portion. The portion fixed to the inside facing the movable body and supporting the member in contact with the member on the movable body side is a convex curved surface, and the second support portion is on the outer side of the extension portion for the second support portion facing the fixed body. The portion fixed and supported in contact with the member on the fixed body side is a convex curved surface.

According to this aspect, since the first support portion and the second support portion of the gimbal mechanism are formed by the convex curved surface, it is easy to assemble the gimbal mechanism with the member on the movable body side and the member on the fixed body side.

A fourteenth aspect of the present invention is an optical unit according to any one of the tenth to thirteenth aspects, wherein the extension portion for the first support portion has an extension angle with respect to the gimbal frame portion. The angle is set so as to be displaced inward so as to elastically contact the member on the movable body side, and the extension portion for the second support portion has an extension angle with respect to the gimbal frame portion so as to elastically contact the member on the fixed body side. It is characterized in that it is set to an angle displaced to the outside.

According to this aspect, the extension portion for the first support portion and the extension portion for the second support portion elastically come into contact with the member on the movable body side and the member on the fixed body side depending on the extension angle. Strong support of the first support member and the second support member and smooth swinging of the gimbal mechanism can be easily realized.

A fifteenth aspect of the present invention is an optical unit according to any one of the first to fourteenth aspects, wherein the gimbal frame portion extends in the first axis direction with the optical axis as the center. It is characterized in that it is formed in an X shape by the first extending portion to be formed and the second extending portion extending in the second axis direction.

According to this aspect, the cymbal frame portion is formed by a first extending portion extending in the first axis direction about the optical axis and a second extending portion extending in the second axis direction. It is formed in an X shape. Since the gimbal frame portion is X-shaped in this way, the gimbal mechanism can be smoothly swung around the first axis and around the second axis.

A sixteenth aspect of the present invention is the optical unit of the fifteenth aspect, wherein the gimbal mechanism is formed of a metal plate, and the first extending portion and the second extending portion of the X-shaped gimbal frame portion are bent. As a result, the extension portion for the first support portion and the extension portion for the second support portion are formed.

According to this aspect, the gimbal mechanism is formed of a metal plate, and the first extension portion and the second extension portion of the X-shaped gimbal frame portion are bent to extend the first support portion. Since the extension portion for the second support portion is formed, the gimbal mechanism can be easily manufactured.

A seventeenth aspect of the present invention is the optical unit according to the fifteenth aspect or the sixteenth aspect, wherein the gimbal frame portion has a gap between the second extending portion and the movable body with the first extending portion. It is characterized in that it is larger than the gap of the movable body.
In other words, the gimbal frame portion is a movable body in which the height of the tip portion of the first extending portion in the optical axis direction is lower than the height of the tip portion of the second extending portion in the optical axis direction. It is characterized in that it is formed so as to be close to the relative position.

According to this aspect, the tip portion of the first extending portion is located closer to the movable body than the tip portion of the second extending portion, and the first extending portion is located on the subject side in the optical axis direction or. The movable area (movable gap) on one side of the opposite side of the subject is wide. Along with this, the tip of the first extending portion is located at a position lower in the optical axis direction than the tip of the second extending portion, and the gimbal frame portion has a bent shape. The shape is not flush with the movable body. Due to this difference in position, a movable gap of the movable body in the optical axis direction can be easily provided, and further miniaturization in the optical axis direction can be realized.

The eighteenth aspect of the present invention is the optical unit according to any one of the tenth to the seventeenth aspects, wherein the gimbal frame portion is arranged on the subject side of the optical module, and the optical module is inserted. An opening is formed in the central portion of the gimbal frame portion on the optical portion side.

According to this aspect, the gimbal frame portion has an opening and is arranged on the subject side of the optical module. As a result, with the gimbal mechanism attached to the fixed body side, it becomes possible to assemble the movable body provided with the optical module from the side opposite to the opening, thereby facilitating the assembling work.
Further, although the runout correction drive mechanism has wiring for power supply for driving, it is possible to have a structure in which this wiring is pulled out from the side opposite to the subject, and the wiring is simplified.

A nineteenth aspect of the present invention is an optical unit according to any one of the tenth to eighteenth aspects, wherein the runout correction drive mechanism is composed of a pair of a coil and a magnet, and the coil and the magnet. One is arranged on the fixed body side, and the other is arranged on the movable body side.

According to this aspect, the runout correction drive mechanism is composed of a pair of a coil and a magnet, one of the coil and the magnet is arranged on the fixed body side, and the other is arranged on the movable body side. This makes it possible to realize miniaturization in the optical axis direction.

A twentieth aspect of the present invention allows the moving body to move in the rolling direction between the movable body and the fixed body in the optical unit according to any one of the tenth aspect to the nineteenth aspect. An intermediate frame is provided to connect the two in a state, the movable body is provided with a holder frame for holding the optical module and mounting magnets for detecting and correcting pitching, yawing and rolling, and the fixed body is a fixed body. The gimbal is attached to the inner surface of an outer casing, a coil mounting frame that is internally fitted in the outer casing and a coil for pitching, yawing, and rolling correction, and a corner portion in the second axis direction of the outer casing. The intermediate frame comprises a second bearing member on which the second support portion of the mechanism is supported, the intermediate frame body comprises a first bearing member on which the first support portion of the gimbal mechanism is supported, and the elastic member. , It is characterized in that it is arranged between the holder frame and the intermediate frame body.

According to this aspect, an optical unit capable of correcting pitching, yawing, and rolling of an optical module can be compactly and easily made by efficiently arranging parts and adopting a new gimbal mechanism and elastic member. It will be possible to manufacture in.

According to the present invention, it is possible to realize miniaturization of an optical unit provided with a mechanism for correcting rolling.

It is a figure which shows Embodiment 1 of this invention, and is the perspective view which shows through the outer casing of an optical unit. It is a figure which shows Embodiment 1 of this invention, and is the front view which shows through the outer casing of an optical unit. FIG. 2 is a view showing the first embodiment of the present invention, and is a view taken along the line A in FIG. 2, which is shown through the outer casing of the optical unit. FIG. 2 is a view showing the first embodiment of the present invention, and is a view taken along the line B in FIG. 2, which is shown through the outer casing of the optical unit. It is a figure which shows Embodiment 1 of this invention, and is the perspective view which shows by disassembling the whole optical unit. It is a figure which shows Embodiment 1 of this invention, and is the perspective view which shows the optical unit disassembled into a fixed body, a gimbal mechanism, and a movable body. It is a figure which shows Embodiment 1 of this invention, and is the perspective view from the diagonal rear which shows by disassembling the optical unit into a set of a fixed body, a gimbal mechanism and an intermediate frame body. It is a figure which shows Embodiment 1 of this invention, and is the perspective view which shows the gimbal mechanism, the intermediate frame body, the 1st bearing part, the 2nd bearing part, and the elastic member of an optical unit. FIG. 2 is a view showing the first embodiment of the present invention, and is a view taken along the line B in FIG. 2 showing the gimbal mechanism, the intermediate frame, the first bearing portion, the second bearing portion, and the elastic member of the optical unit. FIG. 2 is a view showing the first embodiment of the present invention, and is a view taken along the line A in FIG. 2 showing a gimbal mechanism, an intermediate frame body, a first bearing portion, a second bearing portion, and an elastic member of an optical unit. It is a figure which shows Embodiment 1 of this invention, and is the perspective view from the diagonal rear which shows the intermediate frame body, the holder frame, the elastic member and the 1st bearing part of an optical unit. It is a figure which shows Embodiment 1 of this invention, and is the exploded perspective view from the diagonal rear which shows the intermediate frame body, the holder frame, the elastic member and the 1st bearing part of an optical unit. It is a figure which shows Embodiment 2 of this invention, and is the perspective view which shows through the outer casing of an optical unit. It is a figure which shows Embodiment 2 of this invention, and is the front view which shows through the outer casing of an optical unit. It is a figure which shows Embodiment 2 of this invention, and is the perspective view which shows the whole optical unit by disassembling. It is a figure which shows Embodiment 2 of this invention, and is the perspective view which shows the optical unit disassembled into a fixed body, a movable body, and a gimbal mechanism. FIG. 2 is a view showing Embodiment 2 of the present invention, which is a perspective view from an oblique rear view showing a fixed body and a movable body of an optical unit in an exploded manner.

Hereinafter, the optical unit of the present invention will be described in detail based on these drawings by taking two embodiments of the first embodiment shown in FIGS. 1 to 12 and the second embodiment shown in FIGS. 13 to 17 as examples.
In the following description, first, the outline of the overall configuration of the optical unit will be described by taking the first embodiment as an example based on FIGS. 1 to 7. Next, a specific configuration of the optical unit according to the embodiment of the present invention will be described in detail with reference to FIGS. 8 to 12.

Subsequently, the operation mode of the optical unit according to the first embodiment of the present invention will be described separately for pitching and yawing correction and rolling correction, and the operation and effect of the optical unit according to the first embodiment of the present invention will be referred to.
Next, the specific configuration of the optical unit according to the second embodiment of the present invention will be described with reference to FIGS. 13 to 17, focusing on the differences from the first embodiment, and the optical unit according to the second embodiment of the present invention will be described. The operation mode, action, and effect of
Further, other embodiments of the present invention that are partially different from these two embodiments will be referred to.

[Embodiment 1]
(1) Outline of the overall configuration of the optical unit (see FIGS. 1 to 12)
The optical unit 1 of the first embodiment according to the present invention includes a movable body 5 including an optical module 3 and a fixed body 7 that holds the movable body 5 in a state in which it can be displaced at least in the rolling (swing around the optical axis) direction R. , The rolling support mechanism 9 (FIGS. 5 and 8) that rotatably supports the movable body 5 around the optical axis L of the optical module 3 with respect to the fixed body 7, and the movable body 5 is rotated around the optical axis L. It includes a rolling drive mechanism 11 (FIGS. 2 and 5).
Further, the rolling support mechanism 9 is a plurality of rolling support mechanisms 9 on the circumference C (FIG. 8) having a predetermined radius around the optical axis L between the movable body 5 and the fixed body 7 in the directions X and Y intersecting the optical axis L. It is configured by being provided with an elastic member 13 that is arranged at a location and rotatably supports the movable body 5 around the optical axis L.

Further, in the first embodiment, as shown in FIG. 8, the elastic member 13 is composed of a leaf spring 13 (using the same reference numeral as the elastic member) that bends and deforms around the optical axis L. Further, in the present embodiment, an intermediate frame body 15A for connecting the movable body 5 and the fixed body 7 while allowing the movable body 5 to move (rotate) in the rolling direction R is provided.
The one end portion 13a of the leaf spring 13 is fixed to the first fixed portion 16 formed on the intermediate frame body 15A. The other end 13b of the leaf spring 13 is fixed to a second fixed portion 18 formed on a holder frame 17 that holds the optical module 3 and moves integrally with the optical module 3. The leaf spring 13 is fixed to the first fixed portion 16 and the second fixed portion 18 by bonding, fitting, locking, or the like.

Further, in the first embodiment, the first support portion 19 that supports the movable body 5 so as to be swingable around the first axis L1 intersecting the optical axis direction Z of the optical module 3 is provided, and the optical axis direction Z and the first embodiment are provided. A gimbal mechanism 21A having a second support portion 20 swingably supported by a member on the fixed body 7 side around a second axis L2 intersecting the direction of the first axis L1, and a movable body 5 around the first axis L1 and a first. It is provided with a runout correction drive mechanism 23 that is driven around the two-axis line L2.
The gimbal mechanism 21A is extended from the gimbal frame portion 25A arranged on one side of the subject side + Z of the optical module 3 and the opposite side −Z of the subject and the gimbal frame portion 25A in the optical axis direction Z. An extension portion 27 for the first support portion having the first support portion 19, and an extension portion 29 for the second support portion extending from the gimbal frame portion 25A in the optical axis direction Z and having the second support portion 20. It is equipped with.

Further, in the first embodiment, the gimbal frame portion 25A is arranged at + Z on the subject side of the optical module 3, and an opening 30 is formed in the central portion of the gimbal frame portion 25A on the light entering portion side of the optical module 3. ing.
In addition, in the first embodiment, the rolling drive mechanism 11 and the runout correction drive mechanism 23 are composed of a pair of coils 31A, 31B, 31C and magnets 33A, 33B, 33C, and coils 31A, 31B, 31C are attached. A coil mounting frame 35 for this purpose is provided. Further, the magnets 33A, 33B, 33C are attached to the holder frame 17 (FIGS. 5 and 6).
Further, in the first embodiment, the first bearing member 37 that receives and engages with the first support portion 19 is provided with respect to the intermediate frame body 15A. Further, a second bearing member 38 that receives and engages with the second support portion 20 is provided on the inner surface side of the pair of corner portions of the outer casing 39 of the fixed body 7.

(2) Specific configuration of the optical unit (see FIGS. 8 to 12)
The optical unit 1A according to the first embodiment is an optical unit having a correction function for pitching (vertical runout), yawing (horizontal runout), and rolling (shake around the optical axis L) of the optical module 3. The optical module 3 is used, for example, as a thin camera mounted on a mobile phone with a camera, a tablet PC, or the like. The actuator portion that holds the optical module 3 and corrects the pitching direction Y, yawing direction X, and rolling direction R generated in the optical module 3 is the main configuration of the optical unit 1A. Hereinafter, the specific configuration of the optical unit 1A will be described in detail.

<Movable body>
As shown in FIGS. 5 and 6, the movable body 5 holds the optical module 3 and three sets of magnets 33A, 33B, 33C for detecting and correcting pitching, yawing and rolling while holding the optical module 3. It is configured as an example by including a holder frame 17 to be attached.
The optical module 3 is provided with a lens 3a on the subject side + Z, and an optical device or the like for taking an image is built in the rectangular housing 3b. The holder frame 17 is a rectangular frame-shaped member provided so as to surround the remaining four surfaces excluding the front surface on which the lens 3a of the optical module 3 is provided and the rear surface on the opposite side. Two sets of magnets 33A and 33B for pitching and yawing detection and correction and a set of magnets 33C for rolling detection and correction are attached to the outer surface side of the three surfaces of the holder frame 17. ..

<Fixed body>
As shown in FIGS. 5 and 6, the fixed body 7 is assembled into the outer casing 39 and the outer casing 39, and three sets of coils 31A and 31B for pitching, yawing and rolling correction. It is configured as an example by including a coil mounting frame 35 for mounting the 31C and a second bearing member 38 mounted on the inner surface of a corner portion in the second axis L2 direction of the outer casing 39.
The outer casing 39 has a window portion 41 on the front surface which is the subject side + Z, and the rear surface which is the opposite side −Z to the subject is open, and is a rectangular container-shaped member which is one size larger than the optical module 3. be.

<Coil mounting frame>
The coil mounting frame 35 has a rectangular frame-shaped flat plate portion 43 having a central portion opened on the subject side + Z, and is on the side opposite to the subject −Z so as to be along the optical axis direction Z on three sides of the flat plate portion 43. It is configured by forming three coil mounting plates 44 bent by 90 °.
Two sets of coils 31A and 31B for pitching correction and one set for yawing correction and a set of coils 31C for rolling correction are mounted on the inner surface of these three coil mounting plates 44.

<Drive mechanism for runout correction, rolling drive mechanism>
The runout correction drive mechanism 23 is composed of a pair of a correction coil 31A and a magnet 33A and a pair of a correction coil 31B and a magnet 33B for correcting the posture of the movable body 5. The pair of the correction coils 31A and 31B and the magnets 33A and 33B corrects the pitching and yawing of the movable body 5.
The rolling drive mechanism 11 is composed of a pair of a rolling correction coil 31C and a rolling detection and correction magnet 33C.
Based on the runout detection result described later of the optical unit 1A, the runout correction drive mechanism 23 and the rolling drive mechanism 11 act to correct the runout. That is, a current is passed through the coils 31A, 31B, and 31C so as to move the movable body 5 in the direction of canceling the runout of the optical unit 1A.

In the first embodiment, a pattern substrate (coil substrate) in which the coil is incorporated into the substrate wiring as a pattern is adopted as the coils 31A, 31B, and 31C. As the coils 31A, 31B, and 31C, it is also possible to use a winding coil instead of such a pattern substrate.

<Detection of runout of optical unit>
Further, in the vicinity of the three sets of coils 31A, 31B and 31C, three magnetic sensors (Hall elements) 45A, 45B and 45C for detecting changes in the magnetic flux density are exceptionally provided.
The magnetic sensors (Hall elements) 45A, 45B, 45C are optical modules in the optical unit due to changes in the magnetic flux density due to changes in the magnetic flux density due to each pair of magnets 33A, 33B, 33C for detecting and correcting pitching, yawing and rolling. The runout of the movable body 5 including the above is detected. Based on this detection result, the runout correction drive mechanism 23 and the rolling drive mechanism 11 act to correct the runout.

Of these, a thermistor that detects a temperature change in the coil 31A near the magnetic sensor 45A provided in the vicinity of the coil 31A and uses it to correct the detected values of the magnetic sensors 45A, 45B, and 45C based on the detected temperature change. 47 is provided.
Further, the second bearing member 38 is a block-shaped member having a trapezoidal cross section long in the optical axis direction Z, and a recess 38a for receiving and engaging the second support portion 20 is formed on the inner surface thereof.

<Intermediate frame>
The intermediate frame body 15A is a member formed by bending a metal flat plate provided so as to wrap the holder frame 17 from the subject side + Z (FIG. 6).
The intermediate frame body 15A has a rectangular frame-shaped flat plate portion 49A having an opening portion 50 having a large rectangular opening in the central portion on the subject side + Z. The intermediate frame body 15A has a structure in which four side plate portions 51 bent by 90 ° on the opposite side −Z to the subject along the optical axis direction Z are provided at the corners of the flat plate portion 49A.

Further, a part of the tips of the four side plate portions 51 is notched in a rectangular shape, and the notch portion 55 is also formed in the portion of the holder frame 17 facing these notch portions 53 in the assembled state. Has been done.
The four notches 53 formed at the tips of the four side plate portions 51 of the intermediate frame body 15A are the first fixed portions 16, and the corresponding four notches 55 of the holder frame 17 are formed. Is the second fixed portion 18. Therefore, one end 13a of the elastic member 13 formed of the leaf spring is configured to be locked and fixed to the notch 53.
In the first embodiment, the one end portion 13a and the other end portion 13b of the elastic member 13 are formed in a rectangular plate shape as an example, but in addition to this, various other shapes such as a disk shape, a spherical shape, a rod shape, and the like are formed. It is possible to form in the shape of.

Further, among the four side plate portions 51, a rectangular flat plate-shaped first bearing member 37 is attached to the outer surface of the side plate portion 51 located in the direction of the first axis L1 as an example. A recess 37a that receives and engages with the first support portion 19 is formed on the outer surface of the first bearing member 37.
In addition, a notch 57 is also provided in the portion of the flat plate portion 49A of the intermediate frame body 15A from the four corners to the bases of the four side plate portions 51. The notch 57 is provided to secure a necessary swing angle (for example, ± 6 ° to 10 °) around the first axis L1 and around the second axis L2 of the gimbal mechanism 21A described later.

<Elastic member>
The elastic members 13 are arranged at at least three places where the circumference C (FIG. 8) having a predetermined radius about the optical axis L is equally divided. In the present embodiment, as shown in FIGS. 5 and 11, the elastic member 13 is composed of a metal leaf spring as an example at four locations where the circumference C centered on the optical axis L is divided into four by 90 °. Are provided in four.
Here, equal division does not need to be exactly equal division, and is used in the sense that almost equal division may be used.
Further, the leaf spring 13 is fixed to the first fixed portion 16 and the second fixed portion 18, and is assembled between the intermediate frame body 15A and the holder frame 17, and the direction of the plate thickness is the light of the movable body 5. It is arranged so as to face the rotation direction around the axis L, that is, the rolling direction R.

Here, "toward the rolling direction R" in "the direction of the plate thickness faces the rotation direction around the optical axis L of the optical module 3, that is, the rolling direction R" is strictly defined in the present specification as rolling that changes from moment to moment. It is not necessary to point in the direction R exactly. Specifically, there is a width in the direction within the range where the function of rotatably supporting the optical module 3 around the optical axis L does not become unstable, and the direction of the plate thickness is the rolling direction to some extent within the range of the width. It does not matter if it is tilted from R.

Further, as shown in FIGS. 6 to 10, in the leaf spring 13, the first length A in the direction Z along the optical axis is larger than the second length B in the radial direction where the optical axis L intersects. It is formed. In the illustrated embodiment, the first length A is set to be three to four times as long as the second length B.
Further, in the first embodiment, the free bending portion 13c between the one end portion 13a and the other end portion 13b of the leaf spring 13 is formed in a U shape as an example, and the first length A thereof is made long as described above. Therefore, the leaf spring 13 can be smoothly flexed and deformed, and the rigidity with respect to the movement in the optical axis direction Z is increased.

Further, the second length B of the leaf spring 13 is also set to be wider than the plate thickness of the leaf spring 13, and the rigidity against the radial movement in the spring width direction is increased.
The shape of the free bending portion 13c of the leaf spring 13 may be a U-shape as shown in the illustrated embodiment, or another shape such as a V-shape, an I-shape, or an N-shape. In the case of the I-shape and the N-shape, the positions of the one end portion 13a and the other end portion 13b are located on opposite sides in the direction along the optical axis (direction of the first length A).

<Gimbal mechanism>
As shown in FIGS. 6 to 10, the gimbal mechanism 21A is a mechanism having a spring property formed by bending a metal flat plate material. Specifically, as shown in FIGS. 9 and 10, the gimbal mechanism 21A has, as an example, the gimbal frame portion 25A provided on the subject side + Z and the four corners of the gimbal frame portion 25A in the optical axis direction Z. It is configured to include an extension portion 27 for a first support portion and an extension portion 29 for a second support portion, which are formed by being bent by 90 °.
It should be noted that the extension portion 27 for the first support portion and the extension portion 29 for the second support portion do not necessarily have to be all in the shape of a plate, and only a part thereof is formed in the shape of a plate to provide springiness. You may try to exert it. Further, it is also possible to make one of the extension portion 27 for the first support portion and the extension portion 29 for the second support portion into a shape other than the plate shape (for example, a rod shape).

Further, the first support portion 19 is provided on the inner surface of the extension portion 27 for the first support portion facing the movable body 5. The first support portion 19 is composed of a metal member having a convex curved surface formed at a portion that contacts and supports the concave spherical recess 37a of the first bearing member 37 that is a member on the movable body 5 side. There is. As an example, the first support portion 19 has a convex portion formed on the extension portion 27 for the first support portion by a press or the like. Alternatively, it is attached by welding directly to the extension portion 27 for the first support portion.
Further, the second support portion 20 is provided on the outer surface of the second support portion extension portion 29 facing the fixed body 7. The second support portion 20 is composed of a metal member having a convex curved surface formed at a portion that contacts and supports the concave spherical recess 38a of the second bearing member 38 that is a member on the fixed body 7 side. There is. As an example, the second support portion 20 has a convex portion formed on the extension portion 29 for the second support portion by a press or the like. Alternatively, it is attached by welding directly to the extension portion 27 for the first support portion.

Further, as shown in FIGS. 9 and 10, in the state of the gimbal frame portion 25A alone, in the first embodiment, the extension portion 27 for the first support portion has a movable extension angle α with respect to the gimbal frame portion 25A. It is set to an inwardly displaced angle (α <90 °) that makes elastic contact with the first bearing member 37 that is a member on the body 5 side.
Further, in the state of the gimbal frame portion 25A alone, in the first embodiment, the extension portion 29 for the second support portion is a second bearing member whose extension angle α with respect to the gimbal frame portion 25A is a member on the fixed body 7 side. The angle is set to be displaced outward (α> 90 °) so as to make elastic contact with 30.
As a result, the first support portion 19 elastically contacts the first bearing member 37, and the second support portion 20 elastically contacts the second bearing member 38, that is, both of them elastically contact. Pressurization is applied to the contact points between the two, enabling strong support and smooth rocking with little risk of falling off.

The gimbal frame portion 25A extends from the rectangular frame-shaped base frame 24A having a circular opening 30 formed in the center and the four corners of the base frame 24A in the direction of the first axis L1 about the optical axis L. A first extending portion 26 and a second extending portion 28 extending in the direction of the second axis L2 are provided and formed in an X shape.
Further, the gimbal mechanism 21A is formed of a metal plate in the first embodiment, and the first extending portion 26 and the second extending portion 28 of the X-shaped gimbal frame portion 25A are formed long in the extending direction. Then, by bending these tip portions, the extension portion 27 for the first support portion and the extension portion 29 for the second support portion are formed.

Further, as shown in FIGS. 6 and 8, in the gimbal frame portion 25A, the gap between the second extending portion 28 and the movable body 5 is formed to be larger than the gap between the first extending portion 26 and the movable body 5. ing. In other words, the gimbal frame portion 25A is bent along the polygonal lines D and E so that the height H1 of the tip portion of the first extending portion 26 in the optical axis direction Z is the optical axis direction Z of the tip portion of the second extending portion 28. It is formed so as to be lower than the height H2 of the above, that is, close to the movable body 5.
As a result, the movable region (movable gap) of the subject side + Z in the optical axis direction Z formed at the tip of the first extending portion 26 becomes wide, and the movable gap of the movable body 5 in the optical axis direction Z can be easily provided. It is possible.

The structure of the optical unit 1A according to the first embodiment is as described above, but the specific configuration thereof will be described below.
An intermediate frame body 15 for connecting the movable body 5 and the fixed body 7 while allowing the movable body 5 to move in the rolling direction is provided.
The movable body 5 includes a holder frame 17 for holding the optical module 3 and attaching magnets 33A, 33B, 33C for detecting and correcting pitching, yawing and rolling.
The fixed body 7 includes an outer casing 39, a coil mounting frame 35 that is assembled in the outer casing 39 and mounts coils 31A, 31B, and 31C for correcting pitching, yawing, and rolling, and a second outer casing 39. It includes a second bearing member 38 that is attached to the inner surface of the corner portion in the axis L2 direction and supports the second support portion 20 of the gimbal mechanism 21.
The intermediate frame body 15 includes a first bearing member 37 on which the first support portion 19 of the gimbal mechanism 21 is supported.
The coil mounting frame 35 is a magnetic sensor (Hall element) that detects the camera shake of the optical unit 1A from the change in the magnetic flux density by each pair with the magnets 33A, 33B, 33C for detecting and correcting pitching, yawing and rolling. ) 45A, 45B, 45C.
The elastic member 13 is arranged between the holder frame 17 and the intermediate frame body 15.

According to this structure, the optical unit 1A capable of correcting pitching, yawing, and rolling of the optical module 3 is efficiently arranged, and a new gimbal mechanism 21 and elastic member 13 are adopted. Makes it compact and easy to manufacture.

(3) Operating mode of the optical unit Next, the operating mode of the optical unit 1A according to the first embodiment configured in this way will be described separately for pitching and yawing correction and rolling correction.

(A) Pitching and yawing correction When a shake occurs in the optical unit 1A in both the pitching direction Y and the yawing direction X, or in either one direction, the shake is detected by a shake detection sensor (gyroscope) (not shown), and the result is Based on this, the runout correction drive mechanism 23 is driven. Alternatively, the runout of the optical unit 1A may be detected from the change in the magnetic flux density by each pair of the magnetic sensors (Hall element) 45A and 45B and the magnets 33A and 33B for detecting and correcting pitching and yawing. ..
Based on the runout detection result, the runout correction drive mechanism 23 acts to correct the runout. That is, a current is passed through the coils 31A and 31B so as to move the movable body 5 in the direction of canceling the runout of the optical unit 1A, whereby the runout is corrected.

(B) Rolling correction When a runout occurs in the rolling R direction in the optical unit 1A, the optical unit is based on the change in magnetic flux density due to the pairing of the magnetic sensor (Hall element) 45C and the magnets 33C for rolling detection and correction. A runout in the rolling R direction of 1A is detected.
Based on the detection result of this runout, the rolling drive mechanism 11 acts to correct the runout. That is, a current is passed through each coil 31C so as to move the movable body 5 in the direction of canceling the runout of the optical unit 1A, whereby the runout in the rolling R direction is corrected.

As a drive source for the operation of correcting the runout, a voice coil motor composed of a pair of coils 31A, 31B, 31C and magnets 33A, 33B, 33C such as the runout correction drive mechanism 23 and the rolling drive mechanism. Not limited to. It is also possible to use a stepping motor, a piezo element, or the like as another drive source.
After the runout correction in the pitching direction Y, yawing direction X, and rolling direction R, the supply of power to the drive source was stopped, and the runout correction was canceled by the attitude return mechanism by the magnetic spring and the springiness of the elastic member 13. It returns to the state of the initial position.
Although not shown here, the posture return mechanism has a structure that utilizes the magnetic attraction generated between the magnetic body and the magnet separately arranged on the fixed body 7 side and the movable body 5 side. When the posture is in the initial position without runout, the magnetic attraction acts to maintain the posture in the initial position, and when the magnetic attraction deviates from the initial position due to the shake, the magnetic attraction becomes the posture in the original initial position. The magnetic material and the magnet are arranged so as to work in the direction of returning to.

According to the optical unit 1A according to the first embodiment configured in this way, it looks like an expensive bearing conventionally provided on the opposite side −Z of the subject of the optical module 3 due to the support structure by the elastic member 13. It is possible to omit the use of various support members. Further, since the space for providing the bearing can be saved, the optical axis direction Z of the optical unit 1A can be miniaturized.
Further, by adopting the gimbal mechanism 21A formed by bending the flat plate material, the space between the optical module 3 and the outer casing 39 can be reduced, so that the directions X and Y intersecting the optical axis of the optical unit 1A can be miniaturized. You will be able to plan.

Further, in the case of the first embodiment, when the optical module 3 and the holder frame 17 are removed from the fixed body 7, since there is no member that hinders the removal of the optical module 3 and the holder frame 17 on the opposite side −Z from the subject, the subject is used as it is. Only the optical module 3 and the holder frame 17 can be pulled out to the opposite side −Z. Therefore, it is also excellent in maintainability.

Further, a bent structure portion between the first extending portion 26 of the gimbal frame portion 25A of the gimbal mechanism 21A and the extending portion 27 for the first support portion, and the second extending portion 28 and the extending portion 29 for the second support portion 29. The elastic structure of the bent structure part protects the optical module 3 from external impacts (drops, collisions, etc.) in the optical axis direction Z, and reduces the risk of the optical module 3 falling off from the opposite side of the subject-Z. , The effect is obtained. Further, the presence of the flat plate portion 49A of the intermediate frame body 15A also acts to protect the optical module 3 from external impact.

[Embodiment 2]
(1) Specific configuration of the optical unit (see FIGS. 13 to 17)
The optical unit 1B according to the second embodiment of the present invention is an embodiment in which the gimbal frame portion 25B of the gimbal mechanism 21B is arranged on the opposite side −Z from the subject in the optical axis direction Z. Along with this, the flat plate portion 49B of the intermediate frame body 15B is also arranged on the opposite side −Z to the subject in the optical axis direction Z.
The other configurations are basically the same as those of the optical unit 1A according to the first embodiment. Therefore, in the following description, the same configuration as that of the first embodiment will be omitted, and the configuration and arrangement of the gimbal mechanism 21B and the intermediate frame 15B different from the first embodiment will be mainly described.

That is, in the second embodiment, the gimbal mechanism 21B is formed by bending a metal flat plate material as in the first embodiment. That is, the gimbal frame portion 25B provided on the opposite side −Z to the subject, and the first support portion extending portion 27 and the first extending portion 27 formed by bending 90 ° in the optical axis direction Z from the four corners of the gimbal frame portion 25B. 2 It is configured by including an extension portion 29 for a support portion.
The gimbal frame portion 25B of the second embodiment is not provided with the opening 30 provided in the gimbal frame portion 25A of the first embodiment. The size of the base frame 24B is smaller than that of the first embodiment, and the lengths of the first extending portion 26 and the second extending portion 28 are long in the gimbal frame portion 25B.

Further, in the second embodiment, the intermediate frame body 15B is formed by bending a metal flat plate material as in the first embodiment, and the flat plate portion 49B and the flat plate portion 49B provided on the opposite side −Z of the subject. It is configured to include four side plate portions 51 formed by being bent 90 ° in the optical axis direction Z from four corner portions.
In the flat plate portion 49B of the intermediate frame body 15B of the second embodiment, a rectangular opening 50B slightly larger than the base frame 24B of the gimbal frame portion 25B is formed in the central portion. An extending portion 59 extending in the radial direction about the optical axis L is formed at the four corners of the flat plate portion 49B, and four side plate portions 51 are formed from the tip of the extending portion 59 toward the subject side + Z. It is formed to extend.

With such an arrangement of the gimbal mechanism 21B and the intermediate frame body 15B, in the second embodiment, the notch portion 55 formed in the holder frame 17 and the tip of the side plate portion 51 of the intermediate frame body 15B are formed. The cutout portion 53 is located on the subject side + Z, and is attached in a state where one end portion 13a and the other end portion 13b of the elastic member 13 are located on the subject side + Z.

(2) Operating mode of the optical unit The operating mode of the optical unit 1B according to the second embodiment configured in this way is basically the same as the operating mode of the optical unit 1A according to the first embodiment. Two sets of magnets 33A and 33B for detecting and correcting pitching and yawing attached to the holder frame 17 that moves integrally with the optical module 3, and for pitching and yawing correction attached to the coil mounting frame 35 provided in a fixed state. Correction of runout in the pitching direction Y and the yawing direction X is executed based on the change in the relative positions of the two sets of coils 31A and 31B.
Similarly, rolling based on a change in the relative position of a set of magnets 33C for rolling detection and correction attached to the holder frame 17 and a set of coils 31C for rolling correction attached to the coil mounting frame 35. The correction of the runout in the direction R is executed.

Then, when the supply of electric power to the drive source is stopped after the vibrations in the pitching direction Y and the yawing direction X are corrected, the original position is restored by the magnetic attraction force of the posture return mechanism.
Further, when the supply of electric power to the drive source is stopped after the correction of the runout in the rolling direction R, the springiness of the free bending portion 13c of the elastic member 13 is exhibited, and the elastic member 13 also returns to the original state.

The optical unit 1B according to the present embodiment configured in this way also exhibits the same operations and effects as the optical unit 1A of the first embodiment, and intersects the optical axis direction Z of the optical unit 1B with the optical axis. The miniaturization of the directions X and Y can be achieved.

Further, a bent structure portion between the first extending portion 26 and the extending portion 27 for the first support portion of the gimbal frame portion 25B of the gimbal mechanism 21B, and the second extending portion 28 and the extending portion 29 for the second support portion 29. The elastic structure of the bent structure part protects the optical module 3 from external impacts (drops, collisions, etc.) in the optical axis direction Z, and reduces the risk of the optical module 3 falling off from the opposite side of the subject-Z. , The effect is obtained. Further, the presence of the flat plate portion 49B of the intermediate frame body 15B also acts to protect the optical module 3 from external impact.

[Other embodiments]
The optical unit 1 according to the present invention is basically having the configuration as described above, but it is also possible to partially change or omit the configuration within a range that does not deviate from the gist of the present invention. Of course it is possible.

For example, the number of elastic members 13 is four at 90 ° intervals in the first and second embodiments, but three may be arranged at 120 ° intervals, five may be arranged at 72 ° intervals, and the like. It is also possible to arrange five or more elastic members 13. Further, when a leaf spring having a thin plate thickness is used as the elastic member 13, it is possible to secure a necessary elastic force by stacking and using a plurality of leaf springs. Then, in this case, the directions of the leaf springs to be overlapped are staggered in the optical axis direction Z, and the fixing (locking) positions of the leaf springs are dispersed between the subject side + Z in the optical axis direction Z and the opposite side −Z to the subject. When arranged in such a manner, a force around the optical axis L that is not twisted and more evenly acts on the holder frame 17 and the intermediate frame body 15.

Further, the optical module 3 is not limited to the camera module described in the embodiment, and may be another module such as a laser irradiation module or an optical sensor module. When the optical module 3 has another shape such as a cylindrical shape, the shapes of the holder frame 17 and the coil mounting frame 35 and the like can be made to match the shape of the optical module 3.
Further, in the first and second embodiments, the swing direction of the gimbal mechanism 21 is tilted to −45 ° and to swing around the first axis L1 tilted at + 45 ° through the opposite corners of the gimbal frame portion 25. Although it was set to swing around the second axis L2, the first axis L1 and the second axis L2 were set in the vertical direction of ± 0 °, which is the pitching direction Y, and the horizontal direction of ± 90 °, which is the yawing direction X. It is also possible to set.

Further, in the first and second embodiments, the runout of the optical unit 1A is detected from the change in the magnetic flux density by each pair of the magnetic sensors (Hall elements) 45A, 45B, 45C and the magnets 33A, 33B, 33C. It is a configuration, but is not limited to this configuration. For example, it may be configured to be detected by the gyroscope (shake detection sensor) described in Patent Document 1.

1 ... Optical unit, 3 ... Optical module, 3a ... Lens, 3b ... Housing,
5 ... Movable body, 7 ... Fixed body, 9 ... Rolling support mechanism, 11 ... Rolling drive mechanism,
13 ... Elastic member, 13a ... One end, 13b ... The other end, 13c ... Free bending part,
15 ... Intermediate frame body, 16 ... First fixed portion, 17 ... Holder frame, 18 ... Second fixed portion,
19 ... 1st support, 20 ... 2nd support, 21 ... Gimbal mechanism,
23 ... Drive mechanism for runout correction, 24 ... Base frame, 25A ... Gimbal frame part,
25B ... Gimbal frame part, 26 ... First extension part, 27 ... Extension part for first support part,
28 ... 2nd extension, 29 ... extension for 2nd support, 30 ... opening,
31A ... Coil for correction, 31B ... Coil for correction,
31C ... Coil for rolling correction, 33A ... Magnet, 33B ... Magnet,
33C ... Magnet for rolling detection and correction,
35 ... Coil mounting frame, 37 ... First bearing member, 37a ... Recessed,
38 ... second bearing member, 38a ... recess, 39 ... external casing, 41 ... window,
43 ... Flat plate, 44 ... Coil mounting plate,
45A, 45B, 45C ... Magnetic sensor (Hall element), 47 ... Thermistor,
49 ... flat plate, 50 ... opening, 51 ... side plate, 53 ... notch, 55 ... notch,
57 ... notch, 59 ... extension,
L ... Optical axis, X ... Yawing direction (horizontal runout direction), Y ... Pitching direction (vertical runout direction),
R ... Rolling direction (direction of runout around the optical axis), Z ... Direction along the optical axis (along),
X, Y ... direction intersecting the optical axis, C ... circumference, L1 ... first axis line, L2 ... second axis line,
A ... 1st length, B ... 2nd length, α ... extension angle, D ... polygonal line, E ... polygonal line, H ... height

Claims (20)

Movable bodies with optical modules and
Fixed body and
A rolling support mechanism that rotatably supports the movable body around the optical axis of the optical module with respect to the fixed body.
A rolling drive mechanism for rotating the movable body around the optical axis is provided.
The rolling support mechanism is located between the movable body and the fixed body in a direction intersecting the optical axis, and is arranged at a plurality of locations around the optical axis so that the movable body can rotate around the optical axis. An optical unit characterized by having an elastic member that supports it. In the optical unit according to claim 1,
An optical unit characterized in that the elastic member is arranged at equally divided positions around the optical axis. In the optical unit according to claim 1 or 2.
An optical unit characterized in that the elastic member is arranged at at least three places around the optical axis. In the optical unit according to any one of claims 1 to 3.
The elastic member is composed of a leaf spring that bends and deforms around the optical axis.
The leaf spring is
An optical unit characterized in that one end is fixed to a first fixed portion on the fixed body side and the other end is fixed to a second fixed portion on the optical module side. In the optical unit according to claim 4,
The leaf spring is an optical unit characterized in that, in the fixed state, the direction of the plate thickness is directed to the rotation direction around the optical axis of the optical module. In the optical unit according to claim 4 or 5.
The leaf spring is an optical unit characterized in that the first length in the direction along the optical axis is larger than the second length in the radial direction intersecting the optical axis. In the optical unit according to any one of claims 4 to 6.
The leaf spring is an optical unit characterized in that a portion between the one end portion and the other end portion is formed in a U shape. In the optical unit according to any one of claims 4 to 7.
An intermediate frame body is provided between the movable body and the fixed body to connect the movable body in a state where the movable body is allowed to move in the rolling direction.
One end of the leaf spring is fixed to the first fixed portion formed on the intermediate frame body, and is fixed to the first fixed portion.
An optical unit characterized in that the other end of the leaf spring is fixed to a second fixed portion formed in a holder frame that holds the optical module and moves integrally with the optical module. In the optical unit according to any one of claims 1 to 8.
The rolling drive mechanism is composed of a pair of a coil and a magnet, and is composed of a pair.
An optical unit characterized in that one of the coil and the magnet is arranged on the fixed body side, and the other is arranged on the movable body side. In the optical unit according to any one of claims 1 to 8.
A first support portion that swingably supports the movable body is provided around the first axis that intersects the optical axis direction of the optical module, and around the second axis that intersects the optical axis direction and the first axis direction. A gimbal mechanism provided with a second support portion that is swingably supported by the member on the fixed body side.
A runout correction drive mechanism for driving the movable body around the first axis and around the second axis is provided.
The gimbal mechanism is
A gimbal frame portion arranged on one side of the subject side and the opposite side of the subject of the optical module, and
An extension portion for a first support portion extending from the gimbal frame portion in the optical axis direction and having the first support portion,
A second support extending portion extending from the gimbal frame portion in the optical axis direction and having the second support portion is provided.
An optical unit characterized by that. In the optical unit according to claim 10,
An optical unit characterized in that the gimbal frame portion has a plate shape. In the optical unit according to claim 11,
An optical unit characterized in that at least one of the extension portion for the first support portion and the extension portion for the second support portion has a plate shape. The optical unit according to any one of claims 10 to 12.
The first support portion is fixed to the inside of the extension portion for the first support portion facing the movable body, and the portion that contacts and supports the member on the movable body side is a convex curved surface.
The second support portion is fixed to the outside of the extension portion for the second support portion so as to face the fixed body, and the portion that is in contact with and supported by the member on the fixed body side is a convex curved surface. Optical unit. In the optical unit according to any one of claims 10 to 13.
The extension portion for the first support portion is set to an angle at which the extension angle with respect to the gimbal frame portion is displaced inward so as to make elastic contact with the member on the movable body side.
The extension portion for the second support portion is an optical unit characterized in that the extension angle with respect to the gimbal frame portion is set to an angle displaced outward so as to elastically contact the member on the fixed body side. In the optical unit according to any one of claims 10 to 14.
The gimbal frame portion is formed in an X shape by a first extending portion extending in the first axis direction about the optical axis and a second extending portion extending in the second axis direction. An optical unit characterized by being. In the optical unit according to claim 15,
The gimbal mechanism is formed of a metal plate, and is used for the extension portion for the first support portion and the extension portion for the second support portion by bending the first extension portion and the second extension portion of the X-shaped gimbal frame portion. An optical unit characterized in that an extension is formed. In the optical unit according to claim 15 or 16.
The gimbal frame portion is an optical unit characterized in that the gap between the second extending portion and the movable body is larger than the gap between the first extending portion and the movable body. In the optical unit according to any one of claims 10 to 17.
The gimbal frame portion is
Arranged on the subject side of the optical module,
An optical unit characterized in that an opening is formed in the central portion of the gimbal frame portion on the light receiving portion side of the optical module. In the optical unit according to any one of claims 10 to 18.
The runout correction drive mechanism is composed of a pair of a coil and a magnet, and is composed of a pair.
An optical unit characterized in that one of the coil and the magnet is arranged on the fixed body side, and the other is arranged on the movable body side. In the optical unit according to any one of claims 10 to 19.
An intermediate frame body is provided between the movable body and the fixed body to connect the movable body in a state where the movable body is allowed to move in the rolling direction.
The movable body includes a holder frame for holding the optical module and attaching magnets for detecting and correcting pitching, yawing and rolling.
The fixed body is
With the outer casing,
A coil mounting frame that is fitted inside the outer casing and mounts coils for pitching, yawing, and rolling correction.
A second bearing member, which is attached to the inner surface of a corner portion in the second axis direction of the outer casing and supports the second support portion of the gimbal mechanism, is provided.
The intermediate frame body includes a first bearing member on which the first support portion of the gimbal mechanism is supported.
An optical unit characterized in that the elastic member is arranged between the holder frame and the intermediate frame body.

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