WO2015104902A1 - Unité d'entraînement et dispositif d'imagerie - Google Patents

Unité d'entraînement et dispositif d'imagerie Download PDF

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Publication number
WO2015104902A1
WO2015104902A1 PCT/JP2014/080508 JP2014080508W WO2015104902A1 WO 2015104902 A1 WO2015104902 A1 WO 2015104902A1 JP 2014080508 W JP2014080508 W JP 2014080508W WO 2015104902 A1 WO2015104902 A1 WO 2015104902A1
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WO
WIPO (PCT)
Prior art keywords
support
coupled
drive unit
unit according
point
Prior art date
Application number
PCT/JP2014/080508
Other languages
English (en)
Japanese (ja)
Inventor
篤広 野田
Original Assignee
コニカミノルタ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by コニカミノルタ株式会社 filed Critical コニカミノルタ株式会社
Publication of WO2015104902A1 publication Critical patent/WO2015104902A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0075—Arrays characterized by non-optical structures, e.g. having integrated holding or alignment means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0075—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for altering, e.g. increasing, the depth of field or depth of focus

Definitions

  • the present invention relates to a drive unit and an imaging apparatus.
  • the lens may be moved in parallel for adjusting the focal length, adjusting the focal point, etc. in a driving unit such as a lens unit.
  • a parallel guide and an actuator are required.
  • the parallel guide guides the lens in the driving direction while maintaining the posture of the lens.
  • the actuator applies a force that drives the lens in the driving direction to the lens.
  • the parallel guide include a parallel guide including a leaf spring, a parallel guide including a guide shaft, and a parallel guide including a link member.
  • the actuator include a shape memory alloy actuator, a bimetal actuator, a voice coil motor actuator, and a piezoelectric actuator.
  • the planar shape of the lens is often circular, and the planar shape of the lens unit is often rectangular. For this reason, both or one of the parallel guide and the actuator are often installed at the four corners of the lens unit in which a relatively large empty space exists. For example, in the invention described in Patent Document 1, actuators are installed at the four corners of the lens unit.
  • the driven body is a quadrangular object such as a multi-array lens
  • the parallel guide and / or actuator are installed at the four corners of the lens unit as in the conventional case, the space cannot be used effectively, and the lens The unit becomes larger.
  • the present invention is made to solve this problem.
  • the problem to be solved by the present invention is to reduce the size of the drive unit when the driven body includes a rectangular object.
  • the drive unit includes a support, a driven body, a link mechanism, and an actuator.
  • the driven body is driven in the driving direction by the force applied by the actuator's power point to the operating point of the driven body.
  • the driven body includes a quadrangular object that is quadrangular when viewed from the driving direction.
  • the link mechanism includes two or more unit mechanisms. Each of the two or more unit mechanisms includes a link member, a first support portion, and a second support portion.
  • the first support portion is coupled to the support and supports the first supported portion of the link member so as to be rotatable about the first rotation axis.
  • the second support portion is coupled to the first side surface of the quadrangular object, and supports the second supported portion of the link member so as to be rotatable around the second rotation axis.
  • the first rotation axis is perpendicular to the driving direction.
  • the second rotation axis is parallel to the first rotation axis.
  • the link member extends along the first side surface of the quadrangular object.
  • the actuator extends along the second side surface of the rectangular object.
  • the drive unit includes a support, a driven body, a parallel spring, and an actuator.
  • the driven body is driven in the driving direction by the force applied by the actuator's power point to the operating point of the driven body.
  • the driven body includes a quadrangular object that is quadrangular when viewed from the driving direction.
  • the parallel spring includes a spring.
  • the first coupling portion of the spring is coupled to the coupled portion of the support.
  • the second coupling portion of the spring is coupled to the coupled portion of the driven body and is movable in the driving direction by elastic deformation of the parallel spring.
  • the spring extends along the first side surface of the rectangular object.
  • the actuator extends along the second side surface of the rectangular object.
  • the link member and the actuator are arranged by effectively utilizing the space along the side surface of the rectangular object, and the drive unit can be reduced in size.
  • the parallel spring and the actuator are arranged using the space along the side surface of the rectangular object, and the drive unit can be downsized.
  • the first embodiment relates to a lens unit (drive unit).
  • FIG. 1 to 3 schematically show the lens unit according to the first embodiment.
  • FIG. 1 is a top view.
  • 2 and 3 are side views.
  • the lens unit 100 of the first embodiment includes a support 103, a driven body 104, a link mechanism 105, a link mechanism 106, and a plate-shaped shape memory alloy (SMA) actuator 107.
  • the lens unit 100 may include components other than these components. The number of link mechanisms provided in the lens unit 100 may be increased or decreased.
  • the support body 103 includes a support plate 110, a support bar 111, a support bar 112, and a support bar 113.
  • the support plate 110 may be replaced with a structure that is not a plate. All or a part of the support bar 111, the support bar 112, and the support bar 113 may be replaced with a structure that is not a bar.
  • the support body 103 supports the driven body 104 via the link mechanism 105, the link mechanism 106, and the plate-like SMA actuator 107.
  • the driven body 104 includes a multi-array lens 115 and a lens holder 116.
  • the driven body 104 may include components other than these components.
  • the driven body 104 may include a lens that is not a multi-array lens instead of or in addition to the multi-array lens 115.
  • the lens holder 116 may be omitted.
  • the multi-array lens 115 includes 16 lenses 118.
  • the 16 lenses 118 are arranged in a matrix in a direction perpendicular to the drive direction 121.
  • the number of rows in the matrix array is four.
  • the number of columns in the matrix array is 4. Both or one of the number of rows and the number of columns of the matrix array may be increased or decreased.
  • the multi-array lens 115 includes m ⁇ n lenses.
  • the m ⁇ n lenses are arranged in a matrix in a direction perpendicular to the driving direction 121.
  • the number of rows in the matrix array is m.
  • the number of columns in the matrix array is n.
  • m and n are natural numbers.
  • m ⁇ n is a natural number of 2 or more.
  • the lens holder 116 includes a rectangular object 124 and a protrusion 125.
  • the quadrangular object 124 has a quadrangular shape when viewed from the driving direction 121 and includes a side surface 128, a side surface 129, a side surface 130, and a side surface 131.
  • the side surface 128, the side surface 129, the side surface 130, and the side surface 131 are oriented in a direction perpendicular to the driving direction 121.
  • the side surface 129 faces a direction different from the side surface 128 by 90 °.
  • the side surface 130 is a facing surface of the side surface 129.
  • Side 131 is the opposite of side 128.
  • the side surface 128, the side surface 129, the side surface 130, and the side surface 131 belong to the lens holder 116.
  • the side surface 128, the side surface 129, the side surface 130, and the side surface 131 may belong to the multi-array lens 115.
  • the lens holder 116 holds the multi-array lens 115.
  • An object is regarded as a quadrangular object not only when it is a perfect rectangle when viewed from the driving direction 121 but also when it is substantially a rectangle. For example, when a corner portion of an object is chamfered or when a part of a side surface of the object is a gently curved surface, the object is regarded as a quadrangular object.
  • the link mechanism 105 includes two unit mechanisms 134.
  • the link mechanism 106 includes two unit mechanisms 134.
  • the number of unit mechanisms provided in the link mechanism 105 may be increased.
  • the number of unit mechanisms provided in the link mechanism 106 may be increased.
  • Each of the two unit mechanisms 134 belonging to the link mechanism 105 and the two unit mechanisms 134 belonging to the link mechanism 106 includes a link member 137, a support portion 138, and a support portion 139.
  • Each of the two unit mechanisms 134 belonging to the link mechanism 105 and the two unit mechanisms 134 belonging to the link mechanism 106 may include components other than these components.
  • the link member 137 is a flat bar-like object, and includes a flat bar-shaped part 142, a supported part 143, and a supported part 144.
  • the supported portion 143 and the supported portion 144 are at both ends of the flat rod-shaped portion 142.
  • the link member 137 may be replaced with a rod-shaped object that is not a flat bar-shaped object.
  • the support portion 138 belonging to the link mechanism 105 is coupled to the support rod 111 and supports the supported portion 143 belonging to the link mechanism 105 so as to be rotatable around the first rotation axis.
  • the support part 139 belonging to the link mechanism 105 is coupled to the side surface 128 and supports the supported part 144 belonging to the link mechanism 105 so as to be rotatable around the second rotation axis.
  • the two link members 137 belonging to the link mechanism 105 are parallel to each other.
  • the two unit mechanisms 134 belonging to the link mechanism 105 are arranged apart from each other in the driving direction 121.
  • the support portion 138 belonging to the link mechanism 106 is coupled to the support rod 112 and supports the supported portion 143 belonging to the link mechanism 106 so as to be rotatable around the third rotation axis.
  • the support portion 139 belonging to the link mechanism 106 is coupled to the side surface 131 and supports the supported portion 144 belonging to the link mechanism 106 so as to be rotatable around the fourth rotation axis.
  • the two link members 137 belonging to the link mechanism 106 are parallel to each other.
  • the two unit mechanisms 134 belonging to the link mechanism 106 are arranged apart from each other in the driving direction 121.
  • the attitude of the driven body 104 is maintained, and the driven body 104 is translated in the driving direction 121.
  • the link mechanism 105 and the link mechanism 106 function as a parallel guide.
  • the driven body 104 is guided in the driving direction 121 by the two link mechanisms 105 and 106. This facilitates maintaining the posture of the driven body 104.
  • the link mechanism 105 is installed along the side surface 128, and the link mechanism 106 is installed along the side surface 131 that faces the side surface 128. This makes it easier to maintain the posture of the driven body 104.
  • the first rotation axis, the second rotation axis, the third rotation axis, and the fourth rotation axis are perpendicular to the drive direction 121 and are parallel to each other.
  • the protrusion 125 has an action point 147 to which a force is applied.
  • the protrusion 125 is provided on the side surface 129 and is provided between the side surface 128 and the side surface 131.
  • the multi-array lens 115 may have the action point 147.
  • a structure other than the protrusion 125 may have the action point 147.
  • the plate-like SMA actuator 107 has a force point 148 for applying a force. The force point 148 hits the action point 147.
  • the shape of the plate-like SMA actuator 107 changes from the flat shape shown in FIGS. 2 and 3 to the curved shape shown in FIGS. 4 and 5.
  • an electric current may be passed through the plate-like SMA actuator 107 to cause the plate-like SMA actuator 107 to self-heat, or a heater that is thermally coupled to the plate-like SMA actuator 107.
  • the plate-like SMA actuator 107 may be heated by the heater. Due to the shape change, the force point 148 moves from a position relatively close to the support plate 110 shown in FIGS. 2 and 3 to a position relatively far from the support plate 110 shown in FIGS.
  • a force toward the driving direction 121 is applied to the action point 147.
  • the driven member 104 is driven in the driving direction 121 by the force applied by the force point 148 to the action point 147.
  • the drive direction 121 is a direction in which the driven body 104 is moved away from the support plate 110 and is parallel to the optical axis of the multi-array lens 115.
  • the driving direction 121 may be a direction in which the driven body 104 approaches the support body 103.
  • the focus position of the lens unit 100 is changed by driving the driven body 104.
  • the plate-like SMA actuator 107 may be replaced with another type of actuator.
  • the plate-like SMA actuator 107 may be replaced with a linear SMA actuator, a bimetal actuator, or the like.
  • the link member 137 belonging to the link mechanism 105 is an elongated shape, and extends along the side surface 128.
  • the link member 137 belonging to the link mechanism 106 is an elongated object, and extends along the side surface 131.
  • the plate-like SMA actuator 107 is an elongated object and extends along the side surface 129.
  • the side surface 129 faces the direction different from the side surface 128 and the side surface 131 by 90 °. This contributes to effective use of the space along the side surface of the rectangular object 124 and contributes to downsizing the lens unit 100.
  • the plate-like SMA actuator 107 may extend along the side surface 128 or the side surface 131.
  • the support rod 111 and the support rod 112 face the side surface 130 when viewed from the driving direction 121.
  • the support rod 111 and the support rod 112 do not protrude from the range where the driven body 104 exists in the direction perpendicular to the side surface 128 and the side surface 131. This contributes to reducing the size of the lens unit 100 in the direction perpendicular to the side surface 128 and the side surface 130.
  • the support bar 113 is installed along the side separating the side surface 128 and the side surface 129. The place where the support bar 113 is installed may be changed.
  • the plate-like SMA actuator 107 has a coupling point 151. The coupling point 151 is coupled to the support bar 113.
  • the side surface 129 on which the protrusion 125 is provided is closer to the support portion 139 than the side surface 130 that faces the side surface 129. This contributes to making it difficult to generate a moment that breaks the posture of the driven body 104, and contributes to making it easier to maintain the posture of the driven body 104.
  • the lens unit 100 is incorporated in the micro camera unit.
  • the lens unit 100 may be incorporated in a device other than the micro camera unit.
  • the second embodiment relates to a lens unit.
  • the point from which the lens unit of 2nd Embodiment differs from the lens unit of 1st Embodiment is mainly demonstrated.
  • description about 1st Embodiment is used for 2nd Embodiment.
  • the description about embodiments other than the first embodiment may be incorporated into the second embodiment.
  • FIG. 6 Schematic diagrams from FIG. 6 to FIG. 8 show the lens unit 200 of the second embodiment.
  • FIG. 6 is a top view. 7 and 8 are side views.
  • the lens unit 200 includes a support 203, a driven body 204, a link mechanism 205, a link mechanism 206, and a plate-like SMA actuator 207.
  • the support body 203 includes a support plate 210, a support bar 211, a support bar 212, and a support bar 213.
  • the driven body 204 includes a multi-array lens 215 and a lens holder 216.
  • the lens holder 216 includes a rectangular object 224 and a protrusion 225.
  • the quadrangular object 224 has a side surface 228, a side surface 229, a side surface 230, and a side surface 231.
  • the link mechanism 205 includes two unit mechanisms 234.
  • the link mechanism 206 includes two unit mechanisms 234.
  • Each of the two unit mechanisms 234 belonging to the link mechanism 205 and the two unit mechanisms 234 belonging to the link mechanism 206 includes a link member 237, a support portion 238, and a support portion 239.
  • the link member 237 includes a flat bar portion 242, a supported portion 243, and a supported portion 244.
  • the support portion 238 belonging to the link mechanism 205 is coupled to the support rod 211 and supports the supported portion 243 belonging to the link mechanism 205 so as to be rotatable around the first rotation axis.
  • the support portion 239 belonging to the link mechanism 205 is coupled to the side surface 231 and supports the supported portion 244 belonging to the link mechanism 205 so as to be rotatable around the second rotation axis.
  • the support part 238 belonging to the link mechanism 206 is coupled to the support bar 212 and supports the supported part 243 belonging to the link mechanism 206 so as to be rotatable around the third rotation axis.
  • the support portion 239 belonging to the link mechanism 206 is coupled to the side surface 228 and supports the supported portion 244 belonging to the link mechanism 206 so as to be rotatable around the fourth rotation axis.
  • the driven body 204 is guided in the driving direction 221 by the two link mechanisms 205 and the link mechanism 206. This facilitates maintaining the attitude of the driven body 204.
  • the link mechanism 205 is installed along the side surface 231, and the link mechanism 206 is installed along the side surface 228 that faces the side surface 231. This makes it easier to maintain the attitude of the driven body 204.
  • the protrusion 225 has an action point 247 to which a force is applied.
  • the protrusion 225 is provided on the side surface 229.
  • the plate-like SMA actuator 207 has a force point 248 for applying a force.
  • the force point 248 hits the action point 247.
  • the shape of the plate-like SMA actuator 207 changes from a flat shape to a curved shape. Due to the change in shape, the force point 248 moves from a position relatively close to the support plate 210 to a position relatively distant from the support plate 210, and the force point 248 applies a force in the driving direction 221 to the action point 247.
  • the driven member 204 is driven in the driving direction 221 by the force applied by the force point 248 to the action point 247.
  • the link member 237 belonging to the link mechanism 205 is an elongated shape, and extends along the side surface 231.
  • the link member 237 belonging to the link mechanism 206 is an elongated object, and extends along the side surface 228.
  • the plate-like SMA actuator 207 is an elongated object and extends along the side surface 229.
  • the side surface 229 faces a direction different from the side surface 228 and the side surface 231 by 90 °. This contributes to the effective use of the space along the side surface of the rectangular object 224, and contributes to the miniaturization of the lens unit 200.
  • the support bar 211 and the support bar 212 face the side surface 229 when viewed from the driving direction 221.
  • the support bar 211 and the support bar 212 do not protrude from the range where the driven body 204 exists in the direction perpendicular to the side surface 228 and the side surface 231. This contributes to reducing the size of the lens unit 200 in the direction perpendicular to the side surface 228 and the side surface 231.
  • the support rod 213 faces the side surface 229 when viewed from the driving direction 221.
  • the plate-like SMA actuator 207 has a coupling point 251.
  • the coupling point 251 is coupled to the support bar 213.
  • the side surface 229 on which the protrusion 225 is provided is farther from the support portion 239 than the side surface 230 that is the opposite side of the side surface 229.
  • the plate-like SMA actuator 207 extends along the side surface 229.
  • the support bar 211 and the support bar 212 face the side surface 229 when viewed from the driving direction 221.
  • the plate-like SMA actuator 207, the support bar 211, and the support bar 212 are concentrated along the side surface 229.
  • the side surface 230 that is the opposite side of the side surface 229 is opened. This contributes to reducing the size of the lens unit 200 in the direction perpendicular to the side surface 229.
  • Third Embodiment A third embodiment relates to a lens unit. Below, the point from which the lens unit of 3rd Embodiment differs from the lens unit of 1st Embodiment is mainly demonstrated. About the point which is not demonstrated, description about 1st Embodiment is used for 3rd Embodiment. The description about embodiments other than the first embodiment may be incorporated into the third embodiment.
  • FIG. 9 to 11 schematically show the lens unit of the third embodiment.
  • FIG. 9 is a top view.
  • 10 and 11 are side views.
  • the lens unit 300 of the third embodiment includes a support 303, a driven body 304, a link mechanism 305, a link mechanism 306, and a linear SMA actuator 307.
  • the support 303 includes a support plate 310, a support bar 311, a support bar 312, a support bar 313, a support bar 314, a screw 354, and a screw 355.
  • the driven body 304 includes a multi-array lens 315 and a lens holder 316.
  • the lens holder 316 includes a rectangular object 324 and a collar 325.
  • the quadrangular object 324 has a quadrangular shape when viewed from the driving direction 321 and includes a side surface 328, a side surface 329, a side surface 330, and a side surface 331.
  • the link mechanism 305 includes two unit mechanisms 334.
  • the link mechanism 306 includes two unit mechanisms 334.
  • Each of the two unit mechanisms 334 belonging to the link mechanism 305 and the two unit mechanisms 334 belonging to the link mechanism 306 includes a link member 337, a support portion 338, and a support portion 339.
  • the link member 337 includes a flat bar portion 342, a supported portion 343, and a supported portion 344.
  • the support portion 338 belonging to the link mechanism 305 is coupled to the support bar 311 and supports the supported portion 343 belonging to the link mechanism 305 so as to be rotatable around the first rotation axis.
  • the support portion 339 belonging to the link mechanism 305 is coupled to the side surface 328 and supports the supported portion 344 belonging to the link mechanism 305 so as to be rotatable around the second rotation axis.
  • the support portion 338 belonging to the link mechanism 306 is coupled to the support bar 312 and supports the supported portion 343 belonging to the link mechanism 306 so as to be rotatable around the third rotation axis.
  • the support portion 339 belonging to the link mechanism 306 is coupled to the side surface 331 and supports the supported portion 344 belonging to the link mechanism 306 so as to be rotatable around the fourth rotation axis.
  • the driven body 304 is guided in the driving direction 321 by the two link mechanisms 305 and the link mechanism 306. This facilitates maintaining the posture of the driven body 304.
  • the link mechanism 305 is installed along the side surface 328, and the link mechanism 306 is installed along the side surface 331 that faces the side surface 328. This makes it easier to maintain the posture of the driven body 304.
  • ⁇ 325 has an action point 347 where force is applied.
  • the collar 325 is provided on the side surface 329.
  • the linear SMA actuator 307 has a force point 348 that applies a force.
  • the force point 348 is at the center of the linear SMA actuator 307.
  • the linear SMA actuator 307 is stretched while being hooked on the hook 325.
  • the force point 348 hits the action point 347.
  • the linear SMA actuator 307 contracts in the length direction. In order to raise the temperature of the linear SMA actuator 307, a current is passed through the linear SMA actuator 307, and the linear SMA actuator 307 is self-heated. Due to the contraction, the force point 348 moves from a position relatively close to the support plate 310 to a position relatively distant from the support plate 310, and the force point 348 applies a force in the driving direction 321 to the action point 347.
  • the driven member 304 is driven in the driving direction 321 by the force applied by the force point 348 to the action point 347.
  • the link member 337 belonging to the link mechanism 305 is an elongated shape, and extends along the side surface 328.
  • the link member 337 belonging to the link mechanism 306 is an elongated shape, and extends along the side surface 331.
  • the linear SMA actuator 307 is an elongated shape and extends along the side surface 329.
  • the side surface 329 faces a direction different from the side surface 328 and the side surface 331 by 90 °. This contributes to the effective use of the space along the side surface of the rectangular object 324, and contributes to the miniaturization of the lens unit 300.
  • the support bar 311 and the support bar 312 are opposed to the side surface 330 when viewed in the driving direction 321.
  • the support bar 311 and the support bar 312 do not protrude from the range where the driven body 304 exists in the direction perpendicular to the side surface 328 and the side surface 331. This contributes to reducing the size of the lens unit 300 in the direction perpendicular to the side surface 328 and the side surface 331.
  • the support bar 313 is along a side separating the side surface 328 and the side surface 329.
  • the support bar 314 extends along a side separating the side surface 329 and the side surface 331.
  • the place where the support bar 313 and the support bar 314 are installed may be changed.
  • the linear SMA actuator 307 includes a coupling point 351a and a coupling point 351b.
  • the coupling point 351 a and the coupling point 351 b are at both ends of the linear SMA actuator 307.
  • the coupling point 351 a is screwed to the support bar 313 by a screw 354 and is fixed to the support bar 313.
  • the coupling point 351b is screwed to the support bar 314 by a screw 355 and fixed to the support bar 314.
  • Both or one of the coupling point 351a and the coupling point 351b may be fixed by other than screwing.
  • both or one of the connection points 351a and 351b may be fixed by adhesion, riveting, soldering, welding, or the like.
  • the side surface 329 on which the flange 325 is provided is closer to the support portion 339 than the side surface 330 that faces the side surface 329. This contributes to making it difficult to generate a moment that causes the posture of the driven body 304 to be lost, and contributes to making it easier to maintain the posture of the driven body 304.
  • the fourth embodiment relates to a lens unit.
  • the point from which the lens unit of 4th Embodiment differs from the lens unit of 1st Embodiment is mainly demonstrated.
  • description about 1st Embodiment is used for 4th Embodiment.
  • the description about embodiments other than the first embodiment may be incorporated into the fourth embodiment.
  • FIG. 12 is a top view.
  • 13 and 14 are side views.
  • the lens unit 400 of the fourth embodiment includes a support body 403, a driven body 404, a link mechanism 405, and a plate-like SMA actuator 407.
  • the support body 403 includes a support plate 410, a support bar 411, and a support bar 413.
  • the driven body 404 includes a multi-array lens 415 and a lens holder 416.
  • the lens holder 416 includes a rectangular object 424 and a protrusion 425.
  • the rectangular object 424 has a side surface 428, a side surface 429, a side surface 430, and a side surface 431.
  • the link mechanism 405 includes two unit mechanisms 434.
  • Each of the two unit mechanisms 434 includes a link member 437, a support portion 438, and a support portion 439.
  • the link member 437 includes a flat bar portion 442, a supported portion 443, and a supported portion 444.
  • the support portion 438 is coupled to the support rod 411, and supports the supported portion 443 so as to be rotatable around the first rotation axis.
  • the support portion 439 is coupled to the side surface 428 and supports the supported portion 444 so as to be rotatable around the second rotation axis.
  • the driven body 404 is guided in the driving direction 421 by one link mechanism 405. This contributes to downsizing of the lens unit 400.
  • the protrusion 425 has an action point 447 where a force is applied.
  • the protrusion 425 is provided on the side surface 429 and is provided closer to the side surface 428.
  • the plate-like SMA actuator 407 has a force point 448 for applying a force.
  • the shape of the plate-like SMA actuator 407 changes from a flat shape to a curved shape. Due to the shape change, the force point 448 moves from a position relatively close to the support plate 410 to a position relatively distant from the support plate 410, and the force point 448 applies a force toward the driving point 447 in the driving direction 421.
  • the driven body 404 is driven in the driving direction 421 by the force applied by the force point 448 to the action point 447.
  • the link member 437 is an elongated shape and extends along the side surface 428.
  • the plate-like SMA actuator 407 has an elongated shape and extends along the side surface 429.
  • the side surface 429 faces a direction different from the side surface 428 by 90 °. This contributes to the effective use of the space along the side surface of the rectangular object 424 and contributes to the miniaturization of the lens unit 400.
  • the support rod 411 faces the side surface 430 when viewed in the driving direction 421.
  • the support bar 411 does not protrude from the range where the driven body 404 exists in the direction perpendicular to the side surface 428 and the side surface 431. This contributes to reducing the size of the lens unit 400 in the direction perpendicular to the side surface 428 and the side surface 431.
  • the support bar 413 is provided along the side that faces the side surface 429 and separates the side surface 429 and the side surface 431.
  • the plate-like SMA actuator 407 has a coupling point 451.
  • the coupling point 451 is coupled to the support bar 413.
  • the side surface 429 provided with the protrusion 425 is closer to the support portion 439 than the side surface 430 that is the opposite side of the side surface 429. This contributes to making it difficult to generate a moment that breaks the posture of the driven body 404 and to make it easier to maintain the posture of the driven body 404.
  • the fifth embodiment relates to a lens unit.
  • the point from which the lens unit of 5th Embodiment differs from the lens unit of 1st Embodiment is mainly demonstrated.
  • description about 1st Embodiment is used for 5th Embodiment.
  • the description about embodiments other than the first embodiment may be incorporated into the fifth embodiment.
  • FIG. 15 to 17 schematically show the lens unit of the fifth embodiment.
  • FIG. 15 is a top view.
  • 16 and 17 are side views.
  • the lens unit 500 of the fifth embodiment includes a support body 503, a driven body 504, a link mechanism 505, a link mechanism 506, and a plate-like SMA actuator 507.
  • the support body 503 includes a support plate 510, a support bar 511, a support bar 512, and a support bar 513.
  • the driven body 504 includes a multi-array lens 515 and a lens holder 516.
  • the lens holder 516 includes a rectangular object 524 and a protrusion 525.
  • the quadrangular object 524 has a side surface 528, a side surface 529, a side surface 530, and a side surface 531.
  • the link mechanism 505 includes two unit mechanisms 534.
  • the link mechanism 506 includes two unit mechanisms 534.
  • Each of the two unit mechanisms 534 belonging to the link mechanism 505 and the two unit mechanisms 534 belonging to the link mechanism 506 includes a link member 537, a support portion 538, and a support portion 539.
  • the link member 537 includes a flat bar portion 542, a supported portion 543, and a supported portion 544.
  • the support portion 538 belonging to the link mechanism 505 is coupled to the support rod 511 and supports the supported portion 543 belonging to the link mechanism 505 so as to be rotatable around the first rotation axis.
  • the support portion 539 belonging to the link mechanism 505 is coupled to the side surface 528 and supports the supported portion 544 belonging to the link mechanism 505 so as to be rotatable around the second rotation axis.
  • the support portion 538 belonging to the link mechanism 506 is coupled to the support rod 512, and supports the supported portion 543 belonging to the link mechanism 506 so as to be rotatable around the third rotation axis.
  • the support portion 539 belonging to the link mechanism 506 is coupled to the side surface 530 and supports the supported portion 544 belonging to the link mechanism 506 so as to be rotatable around the fourth rotation axis.
  • the driven body 504 is guided in the driving direction 521 by the two link mechanisms 505 and the link mechanism 506. This facilitates maintaining the attitude of the driven body 504.
  • the link mechanism 505 is installed along the side surface 528, and the link mechanism 506 is installed along the side surface 530 that faces a direction different from the side surface 528 by 90 °.
  • the projection 525 has an action point 547 where a force is applied.
  • the protrusion 525 is provided on the side surface 529.
  • the plate-like SMA actuator 507 has a force point 548 for applying a force. The force point 548 hits the action point 547.
  • the shape of the plate-like SMA actuator 507 changes from a flat shape to a curved shape. Due to the change in shape, the force point 548 moves from a position relatively close to the support plate 510 to a position relatively far from the support plate 510, and the force point 548 applies a force toward the driving point 547 in the driving direction 521.
  • the driven body 504 is driven in the driving direction 521 by the force applied by the force point 548 to the action point 547.
  • the link member 537 belonging to the link mechanism 505 is an elongated shape and extends along the side surface 528.
  • the link member 537 belonging to the link mechanism 506 is an elongated shape, and extends along the side surface 530.
  • the plate-like SMA actuator 507 has an elongated shape and extends along the side surface 529.
  • the side surface 529 faces in a direction different from the side surface 528 by 90 °. This contributes to effective use of the space along the side surface of the rectangular object 524, and contributes to downsizing the lens unit 500.
  • the support rod 511 faces the side surface 530 when viewed from the drive direction 521.
  • the support bar 511 does not protrude from the range where the driven body 504 exists in the direction perpendicular to the side surface 528 and the side surface 531. This contributes to reducing the size of the lens unit 500 in the direction perpendicular to the side surface 528 and the side surface 531.
  • the support rod 512 faces the side surface 531 when viewed from the drive direction 521.
  • the side surface 529 on which the protrusion 525 is provided is closer to the support portion 539 than the side surface 530 that is the opposite surface of the side surface 529. This contributes to making it difficult to generate a moment that breaks the posture of the driven body 504, and contributes to easily maintaining the posture of the driven body 504.
  • the sixth embodiment relates to a lens unit.
  • FIG. 18 and 19 show a lens unit according to the sixth embodiment.
  • FIG. 18 is a top view.
  • FIG. 19 is a side view.
  • the lens unit 600 of the sixth embodiment includes a support 603, a driven body 604, two parallel springs 605, and a plate-like SMA actuator 607.
  • the lens unit 600 may include components other than these components.
  • the number of parallel springs provided in the lens unit 600 may be increased or decreased.
  • the support body 603 includes a support plate 610, a support bar 611, and a support bar 612.
  • the support plate 610 may be replaced with a structure that is not a plate. A structure in which both or one of the support bar 611 and the support bar 612 is not a bar may be used.
  • the support bar 611 includes a coupled portion 615.
  • the support bar 612 includes a coupled portion 618.
  • the support body 603 supports the driven body 604 via two parallel springs 605 and a plate-like SMA actuator 607.
  • the driven body 604 includes a multi-array lens 621 and a lens holder 622.
  • the driven body 604 may include components other than these components.
  • the driven body 604 may include a lens that is not a multi-array lens instead of or in addition to the multi-array lens 621.
  • the lens holder 622 may be omitted.
  • the multi-array lens 621 includes 16 lenses 625.
  • the 16 lenses 625 are arranged in a matrix in a direction perpendicular to the driving direction 628.
  • the number of rows in the matrix array is four.
  • the number of columns in the matrix array is 4. Both or one of the number of rows and the number of columns of the matrix array may be increased or decreased.
  • the multi-array lens 621 includes m ⁇ n lenses.
  • the m ⁇ n lenses are arranged in a matrix in a direction perpendicular to the driving direction 628.
  • the number of rows in the matrix array is m.
  • the number of columns in the matrix array is n.
  • m and n are natural numbers.
  • m ⁇ n is a natural number of 2 or more.
  • the lens holder 622 includes a rectangular object 631, a protrusion 632, a coupled portion 633, and a coupled portion 634.
  • the quadrangular object 631 has a quadrangular shape when viewed from the driving direction 628 and includes a side surface 637, a side surface 638, a side surface 639 and a side surface 640.
  • the side surface 637, the side surface 638, the side surface 639, and the side surface 640 are oriented in a direction perpendicular to the driving direction 628.
  • the side surface 638 faces a direction different from the side surface 637 by 90 °.
  • the side surface 639 is a facing surface of the side surface 638.
  • the side surface 640 is a facing surface of the side surface 637.
  • the side surface 637, the side surface 638, the side surface 639, and the side surface 640 belong to the lens holder 622.
  • the side surface 637, the side surface 638, the side surface 639, and the side surface 640 may belong to the multi-array lens 621.
  • the lens holder 622 holds the multi-array lens 621.
  • An object is considered to be a quadrilateral object not only when it is a perfect rectangle when viewed from the driving direction 628 but also when it is substantially a rectangle. For example, when a corner portion of an object is chamfered or when a part of a side surface of the object is a gently curved surface, the object is regarded as a quadrangular object.
  • Each of the two parallel springs 605 includes a leaf spring 643 and a leaf spring 644.
  • the number of leaf springs provided in each of the two parallel springs 605 may be increased.
  • the two parallel springs 605 are separated from each other in the driving direction 628.
  • the plate spring 643 is a flat plate and includes a flat plate portion 647, a coupling portion 648, and a coupling portion 649.
  • the coupling portion 648 and the coupling portion 649 are at both ends of the flat plate portion 647.
  • the leaf spring 644 is a flat plate and includes a flat plate portion 652, a coupling portion 653, and a coupling portion 654.
  • the coupling part 653 and the coupling part 654 are at both ends of the flat plate-like part 652.
  • the leaf spring 643 may be replaced with a wire spring (suspension wire), and the leaf spring 644 may be replaced with a wire spring.
  • the coupling portion 648 is bonded to the coupled portion 615 and coupled to the coupled portion 615.
  • the coupling portion 649 is bonded to the coupled portion 633 and coupled to the coupled portion 633.
  • the coupling portion 653 is bonded to the coupled portion 618 and coupled to the coupled portion 618.
  • the coupling portion 654 is bonded to the coupled portion 634 and coupled to the coupled portion 634.
  • the coupling portion 649 can move in the driving direction 628 by elastic deformation of the leaf spring 643.
  • the coupling portion 654 can move in the driving direction 628 by elastic deformation of the leaf spring 644.
  • the two parallel springs 605 function as a parallel guide.
  • the driven body 604 is guided in the driving direction 628 by the two leaf springs 643 and the leaf springs 644. This facilitates maintaining the attitude of the driven body 604.
  • the leaf spring 643 is installed along the side surface 637
  • the leaf spring 644 is installed along the side surface 640, which is the opposite side of the side surface 637. This makes it easier to maintain the attitude of the driven body 604.
  • the protrusion 632 has an action point 657 to which a force is applied.
  • the protrusion 632 is provided on the side surface 638 and is provided between the side surface 637 and the side surface 640.
  • the multi-array lens 621 may have an action point 657.
  • a structure other than the protrusion 632 may have the action point 657.
  • the plate-like SMA actuator 607 has a force point 658 for applying a force. The force point 658 hits the action point 657.
  • the shape of the plate-like SMA actuator 607 changes from a flat shape to a curved shape.
  • a current may be passed through the plate-like SMA actuator 607 to cause the plate-like SMA actuator 607 to self-heat, or a heater thermally coupled to the plate-like SMA actuator 607
  • the plate-like SMA actuator 607 may be heated by the heater. Due to the change in shape, the force point 658 moves from a position relatively close to the support plate 610 to a position relatively far from the support plate 610, and the force point 658 applies a force toward the driving point 657 in the driving direction 628.
  • the driven body 604 is driven in the driving direction 628 by the force applied by the force point 658 to the action point 657.
  • the driving direction 628 is a direction in which the driven body 604 is moved away from the support plate 610 and is parallel to the optical axis of the multi-array lens 621.
  • the driving direction 628 may be a direction in which the driven body 604 approaches the support plate 610.
  • the focus position of the lens unit 600 is changed by driving the driven body 604.
  • the plate-like SMA actuator 607 may be replaced with another type of actuator.
  • the plate-like SMA actuator 607 may be replaced with a linear SMA actuator, a bimetal actuator, or the like.
  • the leaf spring 643 is an elongated object and extends along the side surface 637.
  • the leaf spring 644 is an elongated object and extends along the side surface 640.
  • the plate-like SMA actuator 607 has an elongated shape and extends along the side surface 638.
  • the side surface 638 faces in a direction different from the side surface 637 and the side surface 640 by 90 °. This contributes to effective utilization of the space along the side surface of the rectangular object 631 and contributes to downsizing the lens unit 600.
  • the plate-like SMA actuator 607 may extend along the side surface 637 or the side surface 640.
  • the support rod 611 and the support rod 612 face the side surface 639 when viewed from the drive direction 628.
  • the support bar 611 and the support bar 612 do not protrude from the range where the driven body 604 exists in the direction perpendicular to the side surface 637 and the side surface 640. This contributes to reducing the size of the lens unit 600 in the direction perpendicular to the side surface 637 and the side surface 640.
  • the side surface 638 where the protrusion 632 is provided is closer to the coupled portion 633 and the coupled portion 634 than the side surface 639 which is the opposite side of the side surface 638. This contributes to making it difficult to generate a moment that breaks the attitude of the driven body 604, and contributes to making it easier to maintain the attitude of the driven body 604.
  • the seventh embodiment relates to a lens unit.
  • the point from which the lens unit of 7th Embodiment differs from the lens unit of 6th Embodiment is mainly demonstrated.
  • description about 6th Embodiment is used for 7th Embodiment.
  • the description about embodiments other than the sixth embodiment may be incorporated into the seventh embodiment.
  • FIG 20 is a top view of the lens unit of the seventh embodiment.
  • the lens unit 700 of the seventh embodiment includes a support 703, a driven body 704, two parallel springs 705 (in FIG. 20, one of the two parallel springs 705). Only a plate-like SMA actuator 707 is shown.
  • the support body 703 includes a support plate 710, a support bar 711, and a support bar 712.
  • the support bar 711 includes a coupled portion 715.
  • the support bar 712 includes a coupled portion 718.
  • the driven body 704 includes a multi-array lens 721 and a lens holder 722.
  • the lens holder 722 includes a rectangular object 731, a protrusion 732, a coupled portion 733, and a coupled portion 734.
  • the quadrangular object 731 has a side surface 737, a side surface 738, a side surface 739 and a side surface 740.
  • Each of the two parallel springs 705 includes a leaf spring 743 and a leaf spring 744.
  • the plate spring 743 includes a flat plate portion 747, a coupling portion 748, and a coupling portion 749.
  • the leaf spring 744 includes a flat plate portion 752, a coupling portion 753, and a coupling portion 754.
  • the coupling unit 748 is coupled to the coupled unit 715.
  • the coupled portion 749 is coupled to the coupled portion 733.
  • the coupling portion 753 is coupled to the coupled portion 718.
  • the coupling portion 754 is coupled to the coupled portion 734.
  • the coupling portion 749 can move in the driving direction. Due to the elastic deformation of the leaf spring 744, the coupling portion 754 can move in the driving direction.
  • the driven body 704 is guided in the driving direction by two leaf springs 743 and a leaf spring 744. This facilitates maintaining the attitude of the driven body 704.
  • the leaf spring 743 is installed along the side surface 737
  • the leaf spring 744 is installed along the side surface 740, which is the opposite side of the side surface 737. This further facilitates maintaining the attitude of the driven body 704.
  • the protrusion 732 has an action point where force is applied.
  • the protrusion 732 is provided on the side surface 738.
  • the plate-like SMA actuator 707 has a force point for applying a force.
  • the force point is the point of action.
  • the shape of the plate-like SMA actuator 707 changes from a flat shape to a curved shape. Due to the shape change, the power point moves from a position relatively close to the support plate 710 to a position relatively far from the support plate 710, and the force point applies a force toward the driving direction to the action point.
  • the driven member 704 is driven in the driving direction by the force applied by the force point to the action point.
  • the plate spring 743 is an elongated shape and extends along the side surface 737.
  • the leaf spring 744 is an elongated shape and extends along the side surface 740.
  • the plate-like SMA actuator 707 is an elongated object and extends along the side surface 738.
  • the side surface 738 faces a direction different from the side surface 737 and the side surface 740 by 90 °. This contributes to effective use of the space along the side surface of the rectangular object 731 and contributes to downsizing the lens unit 700.
  • the support rod 711 faces the side surface 737 when viewed from the driving direction.
  • the support bar 712 faces the side surface 740 when viewed from the driving direction.
  • the support bar 711 and the support bar 712 do not protrude from the range where the driven body 704 exists in the direction perpendicular to the side surface 738 and the side surface 739. This contributes to reducing the size of the lens unit 700 in the direction perpendicular to the side surface 738 and the side surface 739.
  • the side surface 738 on which the protrusion 732 is provided is closer to the coupled portion 733 and the coupled portion 734 than the side surface 739 that is the opposite surface of the side surface 738. This contributes to making it difficult to generate a moment that breaks the attitude of the driven body 704, and contributes to easily maintaining the attitude of the driven body 704.
  • the eighth embodiment relates to a lens unit.
  • the difference between the lens unit of the eighth embodiment and the lens unit of the sixth embodiment will be mainly described.
  • the description about 6th Embodiment is used for 8th Embodiment.
  • the description about embodiments other than the sixth embodiment may be incorporated into the eighth embodiment.
  • 21 is a top view of the lens unit of the eighth embodiment.
  • the lens unit 800 of the eighth embodiment includes a support body 803, a driven body 804, two parallel springs 805 (FIG. 21 shows one of the two parallel springs 805). Only a plate-like SMA actuator 807 is shown.
  • the support body 803 includes a support plate 810, a support bar 811, and a support bar 812.
  • the support bar 811 includes a coupled portion 815.
  • the support bar 812 includes a coupled portion 818.
  • the driven body 804 includes a multi-array lens 821 and a lens holder 822.
  • the lens holder 822 includes a rectangular object 831, a protrusion 832, a coupled portion 833, and a coupled portion 834.
  • the quadrangular object 831 has a side surface 837, a side surface 838, a side surface 839, and a side surface 840.
  • Each of the two parallel springs 805 includes a leaf spring 843 and a leaf spring 844.
  • the plate spring 843 includes a flat plate-shaped portion 847, a coupling portion 848, and a coupling portion 849.
  • the leaf spring 844 includes a flat plate portion 852, a coupling portion 853, and a coupling portion 854.
  • the coupling unit 848 is coupled to the coupled unit 815.
  • the coupling portion 849 is coupled to the coupled portion 833.
  • the coupling portion 853 is coupled to the coupled portion 818.
  • the coupling unit 854 is coupled to the coupled unit 834.
  • the coupling portion 849 can move in the driving direction.
  • the coupling portion 844 can move in the driving direction.
  • the driven body 804 is guided in the driving direction by two leaf springs 843 and a leaf spring 844. This makes it easy to maintain the posture of the driven body 804.
  • the leaf spring 843 is installed along the side surface 837
  • the leaf spring 844 is installed along the side surface 840 that is the opposite side of the side surface 837. This makes it easier to maintain the attitude of the driven body 804.
  • the protrusion 832 has an action point where a force is applied.
  • the protrusion 832 is provided on the side surface 839.
  • the plate-like SMA actuator 807 has a force point for applying a force.
  • the force point is the point of action.
  • the shape of the plate-like SMA actuator 807 changes from a flat shape to a curved shape. Due to the shape change, the force point moves from a position relatively close to the support plate 810 to a position relatively far from the support plate 810, and the force point applies a force toward the driving direction to the action point.
  • the driven member 804 is driven in the driving direction by the force applied by the force point to the action point.
  • the leaf spring 843 is an elongated object and extends along the side surface 837.
  • the leaf spring 844 is an elongated shape and extends along the side surface 840.
  • the plate-like SMA actuator 807 has an elongated shape and extends along the side surface 839.
  • the side surface 839 faces a direction different from the side surface 837 and the side surface 840 by 90 °. This contributes to effective use of the space along the side surface of the rectangular object 831 and contributes to downsizing the lens unit 800.
  • the support bar 811 faces the side surface 839 when viewed from the driving direction.
  • the support bar 812 faces the side surface 839 when viewed from the driving direction.
  • the support bar 811 and the support bar 812 do not protrude from the range where the driven body 804 exists in the direction perpendicular to the side surface 837 and the side surface 840. This contributes to reducing the size of the lens unit 800 in the direction perpendicular to the side surface 837 and the side surface 840.
  • the side surface 839 on which the protrusion 832 is provided is farther from the coupled portion 833 and the coupled portion 834 than the side surface 838 which is the opposite side of the side surface 839.
  • the plate-like SMA actuator 807 extends along the side surface 839.
  • the support bar 811 and the support bar 812 face the side surface 839 when viewed from the driving direction.
  • the plate-like SMA actuator 807, the support bar 811 and the support bar 812 are concentrated and installed along the side surface 839.
  • a side surface 838 that is opposite to the side surface 839 is opened. This contributes to downsizing the lens unit 800 in the direction perpendicular to the side surface 839.
  • the ninth embodiment relates to a lens unit.
  • the point from which the lens unit of 9th Embodiment differs from the lens unit of 6th Embodiment is mainly demonstrated.
  • description about 6th Embodiment is used for 9th Embodiment.
  • the description about embodiments other than the sixth embodiment may be incorporated into the ninth embodiment.
  • FIG. 22 is a top view of the lens unit of the ninth embodiment.
  • the lens unit 900 of the ninth embodiment includes a support 903, a driven body 904, two parallel springs 905 (FIG. 22 shows one of the two parallel springs 905. Only a plate-like SMA actuator 907 is shown.
  • the support body 903 includes a support plate 910, a support bar 911, and a support bar 912.
  • the support bar 911 includes a coupled portion 915.
  • the support bar 912 includes a coupled portion 918.
  • the driven body 904 includes a multi-array lens 921 and a lens holder 922.
  • the multi-array lens 921 includes a coupled portion 933 and a coupled portion 934.
  • the lens holder 922 includes a quadrangular object 931 and a protrusion 932.
  • the quadrangular object 931 has a side surface 937, a side surface 938, a side surface 939, and a side surface 940.
  • Each of the two parallel springs 905 includes a leaf spring 943 and a leaf spring 944.
  • Each of the plate spring 943 and the plate spring 944 has a zigzag planar shape.
  • the spring length becomes long, and a necessary driving amount can be obtained even if the spring constant is small.
  • the leaf spring 943 includes a flat plate portion 947, a coupling portion 948, and a coupling portion 949.
  • the leaf spring 944 includes a flat plate portion 952, a coupling portion 953, and a coupling portion 954.
  • the coupling unit 948 is coupled to the coupled unit 915.
  • the coupling part 949 is coupled to the coupled part 933.
  • the coupling portion 953 is coupled to the coupled portion 918.
  • the coupling portion 954 is coupled to the coupled portion 934.
  • the coupling portion 949 can move in the driving direction by elastic deformation of the plate spring 943. Due to the elastic deformation of the leaf spring 944, the coupling portion 954 can move in the driving direction.
  • the driven body 904 is guided in the driving direction by two leaf springs 943 and a leaf spring 944. This facilitates maintaining the attitude of the driven body 904.
  • the leaf spring 943 is installed along the side surface 937
  • the leaf spring 944 is installed along the side surface 940, which is the opposite side of the side surface 937. This further facilitates maintaining the attitude of the driven body 904.
  • the protrusion 932 has an action point where a force is applied.
  • the protrusion 932 is provided on the side surface 938.
  • the plate-like SMA actuator 907 has a force point for applying a force.
  • the force point is the point of action.
  • the shape of the plate-like SMA actuator 907 changes from a flat shape to a curved shape. Due to the change in shape, the force point moves from a position relatively close to the support plate 910 to a position relatively distant from the support plate 910, and the force point applies a force in the driving direction to the action point.
  • the driven body 904 is driven in the driving direction by the force applied by the force point to the action point.
  • the leaf spring 943 is an elongated object and extends along the side surface 937.
  • the leaf spring 944 is an elongated shape and extends along the side surface 940.
  • the plate-like SMA actuator 907 has an elongated shape and extends along the side surface 938.
  • the side surface 938 faces a direction different from the side surface 937 and the side surface 940 by 90 °. This contributes to effective use of the space along the side surface of the rectangular object 931, and contributes to downsizing the lens unit 900.
  • the support rod 911 and the support rod 912 face the side surface 939 when viewed from the driving direction.
  • the support bar 911 and the support bar 912 do not protrude from the range where the driven body 904 exists in the direction perpendicular to the side surface 937 and the side surface 940. This contributes to reducing the size of the lens unit 900 in the direction perpendicular to the side surface 937 and the side surface 940.
  • the side surface 938 on which the protrusion 932 is provided is closer to the coupled portion 933 and the coupled portion 934 than the side surface 939 that is the opposite side of the side surface 938. This contributes to making it difficult to generate a moment that breaks the attitude of the driven body 904, and contributes to easily maintaining the attitude of the driven body 904.
  • Tenth Embodiment A tenth embodiment relates to a lens unit. Below, the point from which the lens unit of 10th Embodiment differs from the lens unit of 1st Embodiment is mainly demonstrated. About the point which is not demonstrated, description about 1st Embodiment is used for 10th Embodiment. The description about embodiments other than the first embodiment may be incorporated into the tenth embodiment.
  • FIG 23 is a side view of the lens unit of the tenth embodiment.
  • the lens unit 1000 includes a support 1003, a support 1004, a driven body 1005, a link mechanism 1006, a plate-like SMA actuator 1007, and a multi-array lens 1008.
  • the multi-array lens 1008 may be replaced with a lens that is not a multi-array lens.
  • the support body 1003 includes a support plate 1011, a support bar 1012, and a support bar 1013.
  • the support body 1003 supports the driven body 1005 via the link mechanism 1006 and the plate-like SMA actuator 1007.
  • the support body 1004 supports the multi-array lens 1008. Support 1004 is coupled to support 1003.
  • the driven body 1005 includes a lens 1016 and a lens holder 1017.
  • the lens 1016 may be replaced with a multi-array lens.
  • the lens 106 is a single lens, but the lens 106 may be replaced with a plurality of lenses.
  • the lens holder 1017 includes a rectangular object 1020 and a protrusion 1021.
  • the rectangular object 1020 has a side surface 1024, a side surface 1025, and a side surface 1026.
  • the lens holder 1017 holds the lens 1016.
  • the link mechanism 1006 includes two unit mechanisms 1029.
  • Each of the two unit mechanisms 1029 includes a link member 1032, a support portion 1033, and a support portion 1034.
  • the link member 1032 includes a flat bar portion 1037, a supported portion 1038, and a supported portion 1039.
  • the support portion 1033 is coupled to the support rod 1012 and supports the supported portion 1038 so as to be rotatable around the first rotation axis.
  • the support portion 1034 is coupled to the side surface 1024 and supports the supported portion 1039 so as to be rotatable around the second rotation axis.
  • the protrusion 1021 has an action point 1042 where a force is applied.
  • the protrusion 1021 is provided on the side surface 1025.
  • the plate-like SMA actuator 1007 has a force point 1043 for applying a force. The force point 1043 hits the action point 1042.
  • the shape of the plate-like SMA actuator 1007 changes from a flat shape to a curved shape. Due to the change in shape, the force point 1043 moves from a position relatively close to the support plate 1011 to a position relatively far from the support plate 1011, and the force point 1043 applies a force in the driving direction 1046 to the action point 1042.
  • the driven body 1005 is driven in the driving direction 1046 by the force applied by the force point 1043 to the action point 1042. By driving the driven body 1005, the focal length and the focal position of the lens unit 1000 change.
  • the link member 1032 is an elongated object, and extends along the side surface 1024.
  • the plate-like SMA actuator 1007 is an elongated object, and extends along the side surface 1025.
  • the side surface 1025 faces a direction different from the side surface 1024 by 90 °. This contributes to effective use of the space along the side surface of the rectangular object 1020, and contributes to downsizing the lens unit 1000.
  • the eleventh embodiment relates to a lens unit.
  • the point from which the lens unit of 11th Embodiment differs from the lens unit of 1st Embodiment is mainly demonstrated.
  • description about 1st Embodiment is used for 11th Embodiment.
  • the description about embodiments other than the first embodiment may be incorporated into the eleventh embodiment.
  • 24 is a top view of the lens unit of the eleventh embodiment.
  • the lens unit 1100 of the eleventh embodiment includes a support 1103, a driven body 1104, a link mechanism 1105, and a plate-like SMA actuator 1107.
  • the support 1103 includes a support plate 1110, a support bar 1111, and a support bar 1113.
  • the driven body 1104 includes a multi-array lens 1115 and a lens holder 1116.
  • the lens holder 1116 includes a rectangular object 1124 and a protrusion 1125.
  • the rectangular object 1124 has a side surface 1128, a side surface 1129, a side surface 1130, and a side surface 1131.
  • the link mechanism 1105 includes two unit mechanisms 1134 (only one of the two unit mechanisms 1134 is shown in FIG. 24).
  • Each of the two unit mechanisms 1134 includes a link member 1137, a support portion 1138, and a support portion 1139.
  • the link member 1137 includes a flat bar portion 1142, a supported portion 1143, and a supported portion 1144.
  • the support portion 1138 is coupled to the support rod 1111 and supports the supported portion 1143 so as to be rotatable around the first rotation axis.
  • the support portion 1139 is coupled to the side surface 1128 and supports the supported portion 1144 to be rotatable around the second rotation axis.
  • the driven body 1104 is guided in the driving direction by one link mechanism 1105. This contributes to downsizing of the lens unit 1100.
  • the protrusion 1125 has an action point where a force is applied.
  • the plate-like SMA actuator 1107 has a force point for applying a force.
  • the shape of the plate-like SMA actuator 1107 changes from a flat shape to a curved shape. Due to the change in shape, the force point moves from a position relatively close to the support plate 1110 to a position relatively distant from the support plate 1110, and the force point applies a force in the driving direction to the action point.
  • the driven body 1104 is driven in the driving direction by the force applied by the force point to the action point.
  • the link member 1137 is an elongated object, and extends along the side surface 1128.
  • the plate-like SMA actuator 1107 is an elongated shape and extends along the side surface 1131.
  • the side surface 1131 is a facing surface of the side surface 1128 and faces a direction different from the side surface 1128 by 180 °. This contributes to effective use of the space along the side surface of the rectangular object 1124 and contributes to downsizing the lens unit 1100.
  • the support bar 1111 faces the side surface 1130 when viewed from the driving direction.
  • the support bar 1111 does not protrude from the range where the driven body 1104 exists in the direction perpendicular to the side surface 1128 and the side surface 1131. This contributes to reducing the size of the lens unit 1100 in the direction perpendicular to the side surface 1128 and the side surface 1131. This advantage is maintained even when the support bar 1111 faces the side surface 1129 when viewed from the driving direction.
  • the support rod 1113 is provided along the side separating the side surface 1130 and the side surface 1131.
  • the plate-like SMA actuator 1107 has a connection point that is connected to the support rod 1113.
  • the side surface 1129 and the side surface 1130 face a direction different from the side surface 1128 by 90 °.
  • the action point is provided on the side surface 1131.
  • the side surface 1129 is closer to the support portion 1139 than the side surface 1130 that faces the side surface 1129. Further, the side surface 1129 is closer to the action point than the side surface 1130. That is, the support portion 1139 and the action point are closer to the side surface 1129. This contributes to making it difficult to generate a moment that breaks the attitude of the driven body 1104, and contributes to easily maintaining the attitude of the driven body 1104.
  • the support bar 1111 faces the side surface 1130 when viewed from the driving direction.
  • the plate-like SMA actuator 1107 extends along the side surface 1131, but protrudes from the range corresponding to the side surface 1131 beyond the side surface 1130.
  • the protruding portions of the support bar 1111 and the plate-like SMA actuator 1107 are concentrated and installed near the space along the side surface 1130.
  • the side surface 1129 that is the opposite surface of the side surface 1130 is opened. This contributes to reducing the size of the lens unit 1100 in the direction perpendicular to the side surface 1130.
  • Twelfth Embodiment relates to a lens unit.
  • the point from which the lens unit of 12th Embodiment differs from the lens unit of 1st Embodiment is mainly demonstrated.
  • description about 1st Embodiment is used for 12th Embodiment.
  • the description about embodiments other than the first embodiment may be incorporated into the twelfth embodiment.
  • 25 is a top view of the lens unit of the twelfth embodiment.
  • the lens unit 1200 of the twelfth embodiment includes a support 1203, a driven body 1204, a link mechanism 1205, and a plate-like SMA actuator 1207.
  • the support 1203 includes a support plate 1210, a support bar 1211, and a support bar 1213.
  • the driven body 1204 includes a multi-array lens 1215 and a lens holder 1216.
  • the lens holder 1216 includes a rectangular object 1224 and a protrusion 1225.
  • the quadrangular object 1224 has a side surface 1228, a side surface 1229, a side surface 1230, and a side surface 1231.
  • the link mechanism 1205 includes two unit mechanisms 1234 (FIG. 25 shows only one of the two unit mechanisms 1234).
  • Each of the two unit mechanisms 1234 includes a link member 1237, a support portion 1238, and a support portion 1239.
  • the link member 1237 includes a flat bar portion 1242, a supported portion 1243, and a supported portion 1244.
  • the support portion 1238 is coupled to the support rod 1211 and supports the supported portion 1243 so as to be rotatable around the first rotation axis.
  • the support portion 1239 is coupled to the side surface 1228 and supports the supported portion 1244 so as to be rotatable around the second rotation axis.
  • the driven body 1204 is guided in the driving direction by one link mechanism 1205. This contributes to downsizing of the lens unit 1200.
  • the protrusion 1225 has an action point where a force is applied.
  • the plate-like SMA actuator 1207 has a force point for applying a force.
  • the shape of the plate-like SMA actuator 1207 changes from a flat shape to a curved shape. Due to the change in shape, the force point moves from a position relatively close to the support plate 1210 to a position relatively distant from the support plate 1210, and the force point applies a force in the driving direction to the action point.
  • the driven member 1204 is driven in the driving direction by the force applied by the force point to the action point.
  • the link member 1237 is an elongated object and extends along the side surface 1228.
  • the plate-like SMA actuator 1207 is an elongated object and extends along the side surface 1231.
  • the side surface 1231 is a facing surface of the side surface 1228 and faces a direction different from the side surface 1228 by 180 °. This contributes to effective use of the space along the side surface of the rectangular object 1224, and contributes to downsizing the lens unit 1200.
  • the support rod 1211 faces the side surface 1230 when viewed from the driving direction.
  • the support rod 1211 does not protrude from the range where the driven body 1204 exists in the direction perpendicular to the side surface 1228 and the side surface 1231. This contributes to downsizing the lens unit 1200 in the direction perpendicular to the side surface 1228 and the side surface 1231.
  • the support rod 1213 is provided along the side separating the side surface 1229 and the side surface 1231.
  • the plate-like SMA actuator 1207 has a coupling point coupled to the support rod 1213.
  • the side surface 1229 and the side surface 1230 face a direction different from the side surface 1228 by 90 °.
  • the action point is provided on the side surface 1231.
  • the side surface 1229 is closer to the support portion 1239 than the side surface 1230 that faces the side surface 1229. Further, the side surface 1229 is farther from the action point than the side surface 1230. That is, while the support portion 1239 is closer to the side surface 1229, the action point is closer to the side surface 1230.
  • the support rod 1211 faces the side surface 1230 when viewed from the driving direction.
  • the plate-like SMA actuator 1207 extends along the side surface 1231.
  • a thirteenth embodiment relates to a lens unit.
  • the point from which the lens unit of 13th Embodiment differs from the lens unit of 6th Embodiment is mainly demonstrated.
  • description about 6th Embodiment is used for 13th Embodiment.
  • Descriptions about embodiments other than the sixth embodiment may be incorporated into the thirteenth embodiment.
  • FIG. 26 is a top view of the lens unit of the thirteenth embodiment.
  • the lens unit 1300 of the thirteenth embodiment includes a support body 1303, a driven body 1304, two parallel springs 1305 (in FIG. 26, one of the two parallel springs 1305 is shown. Only a plate-like SMA actuator 1307 is shown.
  • the support body 1303 includes a support plate 1310, a support bar 1311, and a support bar 1313.
  • the support bar 1311 includes a coupled portion 1315.
  • the support bar 1313 includes a coupled portion 1319.
  • the driven body 1304 includes a multi-array lens 1321 and a lens holder 1322.
  • the lens holder 1322 includes a rectangular object 1331, a protrusion 1332, and a coupled portion 1333.
  • the rectangular object 1331 has a side surface 1337, a side surface 1338, a side surface 1339, and a side surface 1340.
  • Each of the two parallel springs 1305 includes a leaf spring 1343.
  • the leaf spring 1343 includes a flat plate-like portion 1347, a coupling portion 1348, and a coupling portion 1349.
  • the coupling unit 1348 is coupled to the coupled unit 1315.
  • the coupling part 1349 is coupled to the coupled part 133.
  • the coupling portion 1349 can move in the driving direction.
  • the driven body 1304 is guided in the driving direction by a leaf spring 1343. This facilitates maintaining the posture of the driven body 1304.
  • the protrusion 1332 has an action point where force is applied.
  • the protrusion 1332 is provided on the side surface 1340.
  • the plate-like SMA actuator 1307 has a force point for applying a force.
  • the force point is the point of action.
  • the shape of the plate-like SMA actuator 1307 changes from a flat shape to a curved shape. Due to the change in shape, the power point moves from a position relatively close to the support plate 1310 to a position relatively far from the support plate 1310, and the force point applies a force toward the driving point in the driving direction.
  • the driven body 1304 is driven in the driving direction by the force applied by the force point to the action point.
  • the leaf spring 1343 is an elongated object and extends along the side surface 1337.
  • the plate-like SMA actuator 1307 is an elongated shape and extends along the side surface 1340.
  • the side surface 1340 is the opposite surface of the side surface 1337 and faces a direction different from the side surface 1337 by 180 °. This contributes to effective use of the space along the side surface of the rectangular object 1331 and contributes to downsizing the lens unit 1300.
  • the support bar 1311 faces the side surface 1339 when viewed from the driving direction.
  • the support bar 1311 does not protrude from the range where the driven body 1304 exists in the direction perpendicular to the side surface 1337 and the side surface 1340. This contributes to reducing the size of the lens unit 1300 in the direction perpendicular to the side surface 1337 and the side surface 1340. This advantage is maintained even when the support bar 1311 faces the side surface 1338 when viewed from the driving direction.
  • the support bar 1313 is provided along the side separating the side surface 1339 and the side surface 1340.
  • the plate-like SMA actuator 1307 has a coupling point coupled to the support bar 1313.
  • the side surface 1338 and the side surface 1339 are oriented in a direction different from the side surface 1337 by 90 °.
  • the action point is provided on the side surface 1340.
  • the side surface 1338 is closer to the coupled portion 1333 than the side surface 1339 that is the opposite surface of the side surface 1338.
  • the side surface 1338 is closer to the point of action than the side surface 1339.
  • the coupled portion 1333 and the action point are closer to the side surface 1338. This contributes to making it difficult to generate a moment that breaks the posture of the driven body 1304 and to help maintain the posture of the driven body 1304.
  • the support bar 1311 faces the side surface 1339 when viewed from the driving direction.
  • the plate-like SMA actuator 1307 extends along the side surface 1340, but protrudes from the range corresponding to the side surface 1340 beyond the side surface 1339.
  • the protruding portions of the support bar 1311 and the plate-like SMA actuator 1307 are concentrated and installed near the space along the side surface 1339.
  • a side surface 1338 that is opposite to the side surface 1339 is opened. This contributes to reducing the size of the lens unit 1300 in the direction perpendicular to the side surface 1339.
  • the support bar 1311 may face the side surface 1337 when viewed from the driving direction. In this case, the support bar 1311 does not protrude from the range where the driven body 1304 exists in the direction perpendicular to the side surface 1338 and the side surface 1339. This contributes to reducing the size of the lens unit 1300 in the direction perpendicular to the side surface 1338 and the side surface 1339.
  • a fourteenth embodiment relates to a lens unit.
  • the point from which the lens unit of 14th Embodiment differs from the lens unit of 6th Embodiment is mainly demonstrated.
  • description about 6th Embodiment is used for 14th Embodiment.
  • Descriptions about embodiments other than the sixth embodiment may be incorporated into the fourteenth embodiment.
  • 27 is a top view of the lens unit of the fourteenth embodiment.
  • the lens unit 1400 of the fourteenth embodiment includes a support 1403, a driven body 1404, two parallel springs 1405 (in FIG. 27, one of the two parallel springs 1405). Only a plate-like SMA actuator 1407 is provided.
  • the support body 1403 includes a support plate 1410, a support bar 1411, and a support bar 1413.
  • the support bar 1411 includes a coupled portion 1415.
  • the support bar 1413 includes a coupled portion 1419.
  • the driven body 1404 includes a multi-array lens 1421 and a lens holder 1422.
  • the lens holder 1422 includes a rectangular object 1431, a protrusion 1432, and a coupled portion 1433.
  • the quadrangular object 1431 has a side surface 1437, a side surface 1438, a side surface 1439, and a side surface 1440.
  • Each of the two parallel springs 1405 includes a leaf spring 1443.
  • the plate spring 1443 includes a flat plate-like portion 1447, a coupling portion 1448, and a coupling portion 1449.
  • the coupling unit 1448 is coupled to the coupled unit 1415.
  • the coupling portion 1449 is coupled to the coupled portion 1433.
  • the coupling portion 1449 can move in the driving direction.
  • the driven body 1404 is guided in the driving direction by a leaf spring 1443. This facilitates maintaining the attitude of the driven body 1404.
  • the protrusion 1432 has an action point where force is applied.
  • the protrusion 1432 is provided on the side surface 1440.
  • the plate-like SMA actuator 1407 has a force point for applying a force.
  • the force point is the point of action.
  • the shape of the plate-like SMA actuator 1407 changes from a flat shape to a curved shape. Due to the change in shape, the force point moves from a position relatively close to the support plate 1410 to a position relatively distant from the support plate 1410, and the force point applies a force in the driving direction to the action point.
  • the driven member 1404 is driven in the driving direction by the force applied by the force point to the action point.
  • the leaf spring 1443 is an elongated shape and extends along the side surface 1437.
  • the plate-like SMA actuator 1407 has an elongated shape and extends along the side surface 1440.
  • the side surface 1440 is a facing surface of the side surface 1437 and faces a direction different from the side surface 1437 by 180 °. This contributes to effective utilization of the space along the side surface of the rectangular object 1431 and contributes to downsizing the lens unit 1400.
  • the support bar 1411 and the support bar 1413 are opposed to the side surface 1439 when viewed from the driving direction.
  • the support bar 1411 and the support bar 1413 do not protrude from the range where the driven body 1404 exists in the direction perpendicular to the side surface 1437 and the side surface 1440. This contributes to reducing the size of the lens unit 1400 in the direction perpendicular to the side surface 1437 and the side surface 1440. This advantage is maintained even when both or one of the support bar 1411 and the support bar 1413 faces the side surface 1438 when viewed in the driving direction.
  • the side surface 1438 and the side surface 1439 are oriented in a direction different from the side surface 1437 by 90 °.
  • the action point is provided on the side surface 1440.
  • the side surface 1439 is farther from the coupled portion 1433 than the side surface 1438 which is the opposite surface of the side surface 1439.
  • the side surface 1439 is closer to the action point than the side surface 1438. That is, the point of action is closer to the side surface 1439 while the coupled portion 1433 is closer to the side surface 1438.
  • the support rod 1411 faces the side surface 1439 when viewed from the driving direction.
  • the plate-like SMA actuator 1407 extends along the side surface 1440 but extends beyond the side surface 1439 and corresponds to the side surface 1440.
  • the protruding portions of the support bar 1411 and the plate-like SMA actuator 1407 are concentrated in the vicinity of the space along the side surface 1439.
  • a side surface 1438 that is opposite to the side surface 1439 is opened. This contributes to reducing the size of the lens unit 1400 in the direction perpendicular to the side surface 1439.
  • a fifteenth embodiment relates to an imaging apparatus.
  • the imaging apparatus 1500 includes the lens unit 100 and the imaging element 1503 according to the first embodiment.
  • the lens unit 100 of the first embodiment may be replaced with a lens unit of an embodiment other than the first embodiment.
  • the image sensor 1503 captures an image formed by the lens unit 100.
  • the imaging data output from the imaging element 1503 is used for generating a stereo image, a three-dimensional image, and the like.
  • the number of image sensors included in the imaging apparatus 1500 may be increased.
  • an image formed by 16 lenses 118 is captured by one imaging element 1503. Images formed by the 16 lenses 118 may be captured by two or more image sensors. Each of the two or more imaging elements may capture one image, or may capture two or more images.

Abstract

L'invention permet de réduire la taille d'une unité d'entraînement lorsqu'un corps entraîné comprend un objet tétragonal. Ledit corps entraîné comprend un objet tétragonal qui présente une forme tétragonale lorsqu'il est observé dans la direction d'entraînement. Un point d'application de force sur un actionneur applique une force à un point d'application de force sur le corps entraîné de manière à entraîner ledit corps entraîné dans la direction d'entraînement mentionnée précédemment. Un élément de liaison ou un ressort s'étend le long d'un premier côté de l'objet tétragonal et l'actionneur s'étend le long d'un deuxième coté de l'objet tétragonal.
PCT/JP2014/080508 2014-01-09 2014-11-18 Unité d'entraînement et dispositif d'imagerie WO2015104902A1 (fr)

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JP2014-002285 2014-01-09

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Publication number Priority date Publication date Assignee Title
JP2020122969A (ja) * 2015-08-19 2020-08-13 フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン 多開口撮像デバイス、撮像システム、および多開口撮像デバイスを提供する方法
JP2020129112A (ja) * 2015-08-19 2020-08-27 フラウンホッファー−ゲゼルシャフト ツァ フェルダールング デァ アンゲヴァンテン フォアシュンク エー．ファオ マルチ開口撮像装置、マルチ開口撮像装置の製造方法および撮像システム

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JP2011164412A (ja) * 2010-02-10 2011-08-25 Nidec Copal Electronics Corp オートフォーカスユニット
JP2012177773A (ja) * 2011-02-25 2012-09-13 Toshiba Corp 光学素子、固体撮像装置、携帯情報端末、および表示装置
JP2013077031A (ja) * 2013-01-18 2013-04-25 Konica Minolta Advanced Layers Inc アクチュエータ、駆動装置、および撮像装置

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
JP2011164412A (ja) * 2010-02-10 2011-08-25 Nidec Copal Electronics Corp オートフォーカスユニット
JP2012177773A (ja) * 2011-02-25 2012-09-13 Toshiba Corp 光学素子、固体撮像装置、携帯情報端末、および表示装置
JP2013077031A (ja) * 2013-01-18 2013-04-25 Konica Minolta Advanced Layers Inc アクチュエータ、駆動装置、および撮像装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020122969A (ja) * 2015-08-19 2020-08-13 フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン 多開口撮像デバイス、撮像システム、および多開口撮像デバイスを提供する方法
JP2020129112A (ja) * 2015-08-19 2020-08-27 フラウンホッファー−ゲゼルシャフト ツァ フェルダールング デァ アンゲヴァンテン フォアシュンク エー．ファオ マルチ開口撮像装置、マルチ開口撮像装置の製造方法および撮像システム
JP7174005B2 (ja) 2015-08-19 2022-11-17 フラウンホッファー－ゲゼルシャフト ツァ フェルダールング デァ アンゲヴァンテン フォアシュンク エー．ファオ マルチ開口撮像装置、マルチ開口撮像装置の製造方法および撮像システム

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