WO2012141011A1 - 振れ補正機能付き光学ユニット - Google Patents
振れ補正機能付き光学ユニット Download PDFInfo
- Publication number
- WO2012141011A1 WO2012141011A1 PCT/JP2012/058299 JP2012058299W WO2012141011A1 WO 2012141011 A1 WO2012141011 A1 WO 2012141011A1 JP 2012058299 W JP2012058299 W JP 2012058299W WO 2012141011 A1 WO2012141011 A1 WO 2012141011A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- movable body
- photo reflector
- shake correction
- optical unit
- coil
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 264
- 238000012937 correction Methods 0.000 title claims abstract description 156
- 239000010410 layer Substances 0.000 claims abstract description 120
- 230000007246 mechanism Effects 0.000 claims abstract description 104
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 239000011247 coating layer Substances 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 8
- 238000009499 grossing Methods 0.000 claims description 22
- 239000011521 glass Substances 0.000 claims 1
- 239000005357 flat glass Substances 0.000 abstract description 7
- 239000011435 rock Substances 0.000 abstract description 3
- 238000003384 imaging method Methods 0.000 description 40
- 238000006073 displacement reaction Methods 0.000 description 21
- 238000010586 diagram Methods 0.000 description 20
- 239000000758 substrate Substances 0.000 description 15
- 230000002093 peripheral effect Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 12
- 125000006850 spacer group Chemical group 0.000 description 11
- 238000001514 detection method Methods 0.000 description 10
- 230000035945 sensitivity Effects 0.000 description 8
- 238000003466 welding Methods 0.000 description 6
- 230000005291 magnetic effect Effects 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
- H04N23/682—Vibration or motion blur correction
- H04N23/685—Vibration or motion blur correction performed by mechanical compensation
- H04N23/687—Vibration or motion blur correction performed by mechanical compensation by shifting the lens or sensor position
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0007—Movement of one or more optical elements for control of motion blur
- G03B2205/0023—Movement of one or more optical elements for control of motion blur by tilting or inclining one or more optical elements with respect to the optical axis
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0053—Driving means for the movement of one or more optical element
- G03B2205/0069—Driving means for the movement of one or more optical element using electromagnetic actuators, e.g. voice coils
Definitions
- the present invention relates to an optical unit with a shake correction function mounted on a mobile phone with a camera or the like.
- JP 2002-207148 A Japanese Patent Application Laid-Open No. 2011-65140, FIG. Paragraph [0047] of Japanese Patent Application Laid-Open No. 2007-41418, etc.
- FIGS. 23A, 23B, and 23C a plan view, a YZ cross-sectional view, and an XZ cross-section
- the first photo reflector 580a and the second photo reflector 580b are provided on each of the second side surfaces 32 positioned in the X-axis direction (second direction), and the first side surface 201 of the fixed body 200 is a reflection surface for the first photo reflector 580a.
- the second side surface 202 of the fixed body 200 is used as a reflection surface for the second photo reflector 580b.
- the output from the first photo reflector 580a and the output from the second photo reflector 580b are respectively shown in FIG. Changes as indicated by a solid line L1y and a dotted line L2y.
- the output from the first photo reflector 580a and the output from the second photo reflector 580b are respectively shown in FIG.
- the above-described problems are such that the first photo reflector 580a and the second photo reflector 580b are provided on the first side surface 201 and the second side surface 202 of the fixed body 200, and the first side surface 31 and the second side surface 32 of the movable body 3 are provided. The same phenomenon occurs even when a region facing the first photo reflector 580a and the second photo reflector 580b is used as a reflecting surface.
- FIGS. 25A, 25B, and 25C are a plan view, a YZ sectional view, and an XZ section.
- FIGS. 25A, 25B, and 25C are a plan view, a YZ sectional view, and an XZ section.
- the problem described with reference to FIG. 23 and FIG. 24 is a problem peculiar to the case where the photo reflector is provided by utilizing the gap between the side surface of the movable body 3 and the side surface of the fixed body 200.
- the space between the bottom 39 of the movable body 3 and the bottom 209 of the fixed body 200 is wide. is there.
- the first photo reflector 580 a is used.
- the linearity in the output from the second photo reflector 580b is preferably improved.
- an object of the present invention is to provide an output from a photo reflector and a swing angle of the movable body even when the photo reflector is provided by utilizing a gap between the side surface of the movable body and the side surface of the fixed body. Is to provide an optical unit with a shake correction function capable of obtaining an appropriate correlation between the two.
- an optical unit with a shake correction function swings a fixed body, a movable body holding an optical element, and the movable body in a first direction intersecting the optical axis direction.
- the optical unit with a correction function having a shake correction drive mechanism that swings in the second direction intersecting the optical axis direction and the first direction, the first of the fixed body facing in the first direction.
- a first photo reflector that faces one of the side surfaces and the first side surface of the movable body toward the other first side surface; and a layer that is stacked on a region facing the first photo reflector on the other first side surface.
- a photo reflector and the other A second smooth layer of the stacked reflective in a region facing the second photo reflector at a second side surface, and having a.
- the optical unit with a shake correction function since a shake correction drive mechanism that swings the movable body is provided, when the shake of the optical unit or the like is generated, the optical unit is movable so as to cancel the shake. The body can be swung. For this reason, the inclination of the optical axis can be corrected even if the optical unit is shaken. Further, since a photo reflector (first photo reflector and second photo reflector) is provided between the side surface of the movable body and the side surface of the fixed body, the displacement of the movable body is monitored by the photo reflector, and the monitoring is performed. Based on the result, the shake correction drive mechanism can be controlled.
- a photo reflector first photo reflector and second photo reflector
- a reflective smooth layer (a first smooth layer and a second smooth layer) is formed in a region facing the photo reflector (the first photo reflector and the second photo reflector) on the side surface of the fixed body and the side surface of the movable body. )
- the photo reflector always faces the smooth layer even if the movable body swings. For this reason, even if a scratch or the like is present in the region facing the photo reflector, the scratch is covered with the reflective smooth layer, so that appropriate reflected light always returns to the photo reflector.
- each of the first smoothing layer and the second smoothing layer is any one of a resin tape, a metal sheet, a coating layer, a sheet glass, and a reflecting plate. According to such a configuration, since the smooth layer can be provided during the assembly of the optical unit or at the final stage, it is possible to prevent the smooth layer from being scratched during the assembly of the optical unit.
- the first smooth layer and the second smooth layer are each laminated on a plane. According to this configuration, the smooth layer can be appropriately stacked.
- the first photo reflector and the second photo reflector are provided on the fixed body side, and the first smooth layer and the second smooth layer are provided on the movable body side. Can be adopted.
- the shake correction drive mechanism includes a first air-core coil provided on the first side surface of the fixed body, a first magnet provided on the first side surface of the movable body, and the fixed body.
- the second photo reflector is provided in an inner region of the second air-core coil, and the first smoothing layer is laminated on a surface of the first magnet on the side where the first air-core coil is located.
- the second smooth layer is preferably laminated on the surface of the second magnet on the side where the second air-core coil is located.
- the first photoreflector and the second photoreflector are provided in the empty space of the inner area of the first air core coil and the inner area of the second air core coil used in the shake correction drive mechanism. It will be. Therefore, even when the first photo reflector and the second photo reflector are provided, it is possible to prevent an increase in the size of the optical unit in the direction of the optical axis and in the direction crossing the optical axis direction. Furthermore, the first photo reflector and the second photo reflector are provided in the inner region of the first air core coil and the inner region of the second air core coil, and are surrounded by the first air core coil and the second air core coil. It is in.
- the first air core coil and the second air core coil can prevent light emitted from one of the first photo reflector and the second photo reflector from entering the other photo reflector as leakage light. it can. Therefore, the photoreflector can be prevented from being erroneously detected due to leakage light, so that the tilt of the optical axis can be corrected with high accuracy.
- the first photoreflector is provided in an inner region of the first air-core coil, at a position shifted from a back surface of the first air-core coil toward a side where the first magnet is located, It is preferable that the photo reflector is provided at a position shifted from the back surface of the second air-core coil to the side where the second magnet is located in the inner region of the second air-core coil. According to this configuration, the distance between the photo reflector and the magnet can be reduced, so that the sensitivity of the photo reflector can be improved.
- the shake correction drive mechanism includes a first coil provided on the first side surface of the fixed body, a first magnet provided on the first side surface of the movable body, and a second coil of the fixed body.
- Each of the two smoothing layers is preferably provided on the side where the swing center of the movable body is located in the optical axis direction from the first coil, the first magnet, the second coil, and the second magnet.
- the shake correction drive mechanism is preferably provided at a position separated from the swing center in the optical axis direction.
- the photo reflector is preferably detected under a condition where the amount of displacement is small to some extent. If a photo reflector is provided between the shake correction drive mechanism provided at a position separated in the optical axis direction and the oscillation center, the photo reflector is provided at a position where the displacement of the movable body is relatively small. That's right. Therefore, even if the size of the optical unit is small, both the shake correction drive mechanism and the photo reflector can be properly arranged.
- a swing fulcrum that supports the rear end portion of the movable body in the optical axis direction and supports the movable body so as to be swingable in the first direction and the second direction.
- the gap between the rear end in the optical axis direction of the movable body and the bottom of the fixed body is widened, but in the present invention, a gap between the side surface of the movable body and the side surface of the fixed body is used. Since the photo reflector is provided, the photo reflector can be used with higher sensitivity as compared with the case where the photo reflector is provided between the rear end in the optical axis direction of the movable body and the bottom of the fixed body.
- a photo reflector (first photo reflector and second photo reflector) is provided between the side surface of the movable body and the side surface of the fixed body.
- the displacement of the movable body is monitored, and the shake correction drive mechanism can be controlled based on the monitoring result.
- a reflective smooth layer (a first smooth layer and a second smooth layer) is formed in a region facing the photo reflector (the first photo reflector and the second photo reflector) on the side surface of the fixed body and the side surface of the movable body. ) Are laminated, the photo reflector always faces the smooth layer even if the movable body swings.
- rotation around the X axis corresponds to so-called pitching (pitch)
- rotation around the Y axis corresponds to so-called yawing (roll)
- Z axis The rotation around corresponds to so-called rolling.
- + X is attached to one side of the X axis
- -X is attached to the other side
- + Y is attached to one side of the Y axis
- -Y is attached to the other side
- one side of the Z axis is attached.
- + Z is attached to the side (opposite the subject side)
- -Z is attached to the other side (subject side).
- FIG. 1 is an explanatory view schematically showing a state in which an optical unit with a shake correction function to which the present invention is applied is mounted on an optical device such as a mobile phone.
- FIG. 2 is an explanatory view showing the arrangement position and the like of a photo reflector in an optical unit with a shake correction function to which the present invention is applied.
- FIGS. 2 (a), (b), (c), and (d) are respectively It is explanatory drawing which shows the planar structure of an optical unit, explanatory drawing which shows a YZ cross section typically, explanatory drawing which shows a XZ cross section typically, and explanatory drawing which shows typically a mode that the movable body rock
- the illustration of the shake correction drive mechanism is omitted.
- An optical unit 100 (an optical unit with a shake correction function) illustrated in FIG. 1 is a thin camera used for an optical device 1000 such as a mobile phone with a camera, and is supported by a chassis 1100 (device main body) of the optical device 1000. It is mounted with.
- the optical unit 100 of the present embodiment supports the movable body 3 including the imaging unit 1 so as to be swingable within the fixed body 200, and also includes a gyroscope mounted on the optical unit 100 or an optical unit.
- a shake correction drive mechanism (not shown in FIG. 1) is provided that swings the imaging unit 1 based on the result of camera shake detected by a shake detection sensor such as a gyroscope mounted on the main body side of the device 1000. .
- a photo reflector 580 (first photo reflector) that monitors the displacement of the movable body 3 when the optical unit 100 is swung. 580a and a second photo reflector 580b) are provided. Therefore, the shake correction drive mechanism is controlled based on the monitoring result of the photo reflector 580.
- the first side surface 201 of the fixed body 200 and the first side surface 31 of the movable body 3 facing each other in the Y direction (first direction) are arranged on the other side surface.
- a first photo reflector 580a facing the first side surface is provided.
- the second photo reflector 580b facing the other second side surface from the second side surface 202 of the fixed body 200 and the second side surface 32 of the movable body 3 facing each other in the X direction (second direction).
- a first photo reflector 580 a is provided on the first side surface 201 of the fixed body 200, and the first photo reflector 580 a faces the first side surface 31 of the movable body 3.
- a second photo reflector 580 b is provided on the second side surface 202 of the fixed body 200, and the second photo reflector 580 b faces the second side surface 32 of the movable body 3.
- a reflective first smoothing layer 590a is stacked in a region facing the first photo reflector 580a on the first side surface 31 of the movable body 3, and the second photo reflector 580b is laminated on the second side surface 32 of the movable body 3.
- a reflective second smooth layer 590b is laminated in a region facing the.
- Each of the smooth layers 590 (the first smooth layer 590a and the second smooth layer 590b) is made of a resin tape, a metal sheet, a coating layer, plate glass, or a reflector.
- the smooth layer 590 is composed of a resin tape, a metal sheet, a sheet glass, a reflector, and a coating layer that is applied to the movable body 3 and cured after being applied to the movable body 3 with an adhesive or the like. .
- the region facing the photo reflector 580 moves as the movable body 3 swings.
- the smooth layer 590 is separated from the photo reflector 580 when the movable body 3 swings. It is provided over the whole area
- the first photoreflector 580a always faces the first smooth layer 590a when the movable body 3 rotates around the axis Y0, similarly to when the movable body 3 rotates around the axis X0.
- the second photo reflector 580b always faces the second smooth layer 590b.
- FIG. 3 is a perspective view showing an appearance and the like of the optical unit with a shake correction function according to the first embodiment of the present invention
- FIGS. 3A and 3B are views when the optical unit is viewed from the subject side.
- FIG. 2 is a perspective view and a perspective view of a state in which the photographing unit is removed from the optical unit.
- FIG. 4 is an exploded perspective view showing the overall configuration of the optical unit 100 with a shake correction function according to Embodiment 1 of the present invention.
- the imaging unit 1 is not shown for the movable body 3, and only the case 110 is shown.
- flexible wiring boards 410 and 490 for feeding power to the imaging unit 1 and the shake correction drive mechanism are drawn out from the optical unit 100, and such flexible wiring is provided.
- the substrates 410 and 490 are electrically connected to an upper control unit or the like provided on the main body side of the optical device 1000.
- the flexible wiring board 410 also has a function of outputting a signal from the imaging unit 1.
- the optical unit 100 is first supported by a fixed body 200, a movable body 3 in which the imaging unit 1 is accommodated in a case 110, and the movable body 3 being displaceable with respect to the fixed body 200.
- a shake correction drive mechanism 500 that generates a magnetic drive force that causes the movable body 3 to be displaced relative to the fixed body 200 between the movable body 3 and the fixed body 200.
- FIG. 5 is an explanatory diagram of a coil holder and coils used in the optical unit 100 with a shake correction function according to the first embodiment of the present invention.
- FIG. 6 is an explanatory diagram of the flexible wiring board 490 in the optical unit 100 with a shake correction function according to the first embodiment of the present invention.
- the fixed body 200 includes an upper cover 250, a coil holder 260, and a lower cover 270
- the upper cover 250 includes a rectangular tubular body 210 that surrounds the movable body 3.
- an end plate portion 220 that closes the opening on the subject side of the rectangular tubular body 210.
- the end plate 220 is formed with a window 220a through which light from the subject enters.
- the end of the rectangular tubular body 210 opposite to the subject (+ Z side) is an open end.
- a notch 217 is formed in the side plate portion 211 a located on one side + Y in the Y-axis direction among the four side plate portions 211.
- the notches 217 are used to pull out the flexible wiring boards 410 and 490 to the outside.
- the lower cover 270 is a press-processed product for a metal plate, and includes a substantially rectangular bottom plate portion 271 and two outer peripheral edges of the bottom plate portion 271 facing each other in the X-axis direction and the other side -Y in the Y-axis direction.
- the side plate part 272 is fixed to the inner surface of the rectangular tubular body part 210 of the upper cover 250.
- a receiving plate 181 is fixed to the center of the upper surface of the lower cover 270 facing the front side in the optical axis direction, while a hemispherical protrusion 182 is fixed to the bottom portion (rear side end portion in the optical axis direction) of the movable body 3.
- the protrusion 182 constitutes a swing fulcrum 180 that supports the movable body 3 so that the movable body 3 can swing.
- the movable body 3 is an end portion (on the one side of the Z axis + Z (rear side in the optical axis direction)). It can swing around a swinging fulcrum 180).
- the movable body 3 can swing around the rear side in the optical axis direction (the + Z side in the Z-axis direction) with respect to the center in the optical axis direction.
- a configuration in which a hemispherical protrusion is provided on the lower cover 270 side, or a structure in which a steel ball is disposed between the lower cover 270 and the movable body 3 can be employed. .
- the coil holder 260 includes an L-shaped vertical frame portion 265 extending in the optical axis direction at each of the four corner portions and an adjacent vertical frame portion 265 on the front side in the optical axis direction. It has a rectangular shape including an upper frame portion 266 that connects and a lower frame portion 267 that connects adjacent vertical frame portions 265 on the rear side in the optical axis direction.
- the vertical frame portion 265 is located slightly inside the outer peripheral edge of the upper frame portion 266 and the outer peripheral edge of the lower frame portion 267.
- the coil holder 260 includes a side surface 264 having an opening 268 between adjacent vertical frame portions 265.
- a belt-like portion 460 of the flexible wiring board 490 shown in FIGS. 5 and 6 is held in a state of being bent in a rectangular shape.
- An air core coil 560 is mounted at each of the locations.
- the air-core coil 560 is formed in a rectangular frame shape, and upper and lower long side portions 568 and 569 opposed in the optical axis direction are used as effective sides.
- the belt-like portion 460 is bent into a rectangle along the periphery of the coil holder 260 and is held by the coil holder 260 in a state of being accommodated between the upper frame portion 266 and the lower frame portion 267 in the optical axis direction. In this state, the upper and lower long side portions 568 and 569 of the four air-core coils 560 are exposed to the inside from the opening 268 of the coil holder 260.
- the four side surfaces 264 of the coil holder 260 are referred to as side surfaces 264a, 264b, 264c, and 264d in the order of arrangement around the optical axis.
- the side surface 264 a corresponds to the first side surface 201 of the fixed body 200
- the side surface 264 b corresponds to the second side surface 202 of the fixed body 200.
- a bent portion 495 that is bent in the optical axis direction is provided at the base portion of the belt-like portion 460 in the flexible wiring board 490, and the bent portion 495 closes the notch 211a (see FIG. 4) of the upper cover 250.
- a substrate cover 280 made of a metal plate is placed outside the bent portion 495, and both end portions of the substrate cover 280 are fixed to the side plate portion 211a of the upper cover 250.
- a photo reflector 580 (first photo reflector 580a and the first photo reflector 580a and the first photo reflector 580a is provided on the belt-like portion 460 of the flexible wiring board 490 shown in FIGS.
- the photo reflector 580 is held on the fixed body 200 side, detects the displacement of the movable body 3, and controls a shake correction drive mechanism 500 described later.
- FIG. 7 is an exploded perspective view of the movable body 3 used in the optical unit 100 with a shake correction function according to Embodiment 1 of the present invention. In FIG. 7, the imaging unit 1 is not shown.
- the movable body 3 has a case 110 that holds the imaging unit 1 shown in FIG. 3 inside, and the case 110 constitutes an outer peripheral portion of the movable body 3.
- the case 110 includes a cylindrical case 120 that covers the periphery of the imaging unit 1 and an upper case 130 that covers the front side of the imaging unit 1 in the optical axis direction.
- the cylindrical case 120 is a pressed product of a metal plate.
- the cylindrical case 120 includes a rectangular tube portion 123 and a bottom portion 121.
- the rectangular tube portion 123 is a movable body. 3 side portions are formed.
- the movable body 3 is a rectangular parallelepiped, and the cylindrical case 120 has a rectangular tube shape.
- the upper case 130 is substantially square.
- the upper case 130 includes an upper plate portion 131 that covers the cylindrical case 120 on the front side in the optical axis direction, and a side plate portion 132 that protrudes rearward from the outer peripheral edge of the upper plate portion 131 in the optical axis direction.
- a hole 130a through which light from the subject side passes is formed.
- the side plate portion 132 is bent in an L shape toward the rear side in the optical axis direction, and is fitted inside the cylindrical case 120 to couple the upper case 130 and the cylindrical case 120 together.
- a spring member 600 is connected to the cylindrical case 120.
- the spring member 600 includes a fixed body side connecting portion 620 fixed to the lower end portion of the coil holder 260 of the fixed body 200, a movable body side connecting portion 610 connected to the movable body 3, and the movable body side connecting portion 610 and the fixed body side connecting portion.
- the plate spring member includes a plurality of arm portions 630 extending between the arm portions 620, and both ends of the arm portions 630 are connected to the movable body side connecting portion 610 and the fixed body side connecting portion 620, respectively.
- the spring member 600 is made of a non-magnetic metal such as beryllium copper or non-magnetic SUS steel, and has a leaf spring shape formed by pressing a thin plate having a predetermined thickness or etching using a photolithography technique.
- the movable body side connecting portion 610 and the fixed body side connecting portion 620 are formed in a rectangular frame shape, and the fixed body side connecting portion 620 is formed on the lower surface of the lower frame portion 267 of the coil holder 260 of the fixed body 200 over the entire circumference. It is fixed.
- the movable body side connection part 610 is being fixed to the outer peripheral surface of the cylindrical case 120 of the movable body 3 over the perimeter.
- the movable body side connecting portion 610 and the fixed body side connecting portion 620 may adopt a configuration in which each arm portion 630 is divided.
- the air core coil 560 and the magnet 520 constituting the shake correction drive mechanism 500 described with reference to FIGS. 4, 5, and 6 are fixed to each of the four side surfaces 126 of the cylindrical case 120.
- the magnet 520 is magnetized with different poles on the outer surface side and the inner surface side.
- the magnet 520 includes two magnet pieces (a first magnet piece 521 and a second magnet piece 522) which are adjacent in the optical axis direction, and the two magnet pieces have their inner surfaces facing different poles. Yes.
- the four magnets 520 are hereinafter referred to as a first magnet 520a, a second magnet 520b, a third magnet 520c, and a fourth magnet 520d in the order of arrangement around the optical axis.
- the four side surfaces 126 of the cylindrical case 120 are hereinafter referred to as side surfaces 126a, 126b, 126c, and 126d in the order of arrangement around the optical axis.
- the side surface 126 a corresponds to the first side surface 31 of the movable body 3
- the side surface 126 b corresponds to the second side surface 32 of the movable body 3.
- FIGS. 8A and 8B are explanatory diagrams showing the configuration of the YZ cross section of the optical unit 100 with a shake correction function according to the first embodiment of the present invention.
- FIGS. 8A and 8B pass through the swing fulcrum 180.
- FIG. FIG. 4 is a YZ cross-sectional view when the optical unit 100 is cut at a position, and a cross-sectional view showing an enlarged part thereof.
- FIGS. 9A and 9B are explanatory diagrams showing the configuration of the ZX cross section of the optical unit 100 with a shake correction function according to the first embodiment of the present invention.
- FIGS. 9A and 9B pass through the swing fulcrum 180.
- the spring member 600 is planar when no load is applied, but when the movable body 3 is incorporated in the fixed body 200, the movable body 3 is pushed forward in the optical axis direction at the swing fulcrum 180. As a result, the spring member 600 is deformed, and the shape of the deformed spring member 600 is schematically shown.
- the outer peripheral surface of the cylindrical case 120 is fixed when the movable body side connecting portion 610 of the spring member 600 is fixed to the side surface portion (tubular case 120) of the movable body 3 over the entire circumference.
- a rectangular frame-shaped connecting member 150 is fixed to the connecting member 150, and a spring member 600 is fixed to the connecting member 150. More specifically, a rectangular frame-shaped connecting member 150 is fixed to the rectangular tube portion 123 of the cylindrical case 120 at an intermediate position in the optical axis direction, and the movable body side connecting portion 610 of the spring member 600 is connected to the rectangular tube portion 123. It is fixed to the member 150.
- the connecting member 150 is fixed to the cylindrical case 120 with an adhesive over the entire periphery, and the movable body side connecting portion 610 of the spring member 600 is fixed to the connecting member 150 with the adhesive over the entire periphery.
- a stopper mechanism that defines a movable range when the movable body 3 is displaced toward the subject in the optical axis direction is configured using the connecting member 150. More specifically, in the coil holder 260 described with reference to FIG. 5, the end of the vertical frame portion 265 on the rear side in the optical axis direction is opposed to the connecting member 150 on the front side in the optical axis direction through a gap. In addition, a stopper mechanism is configured at each of the four corner portions of the movable body 3.
- the connecting member 150 contacts the end portion on the rear side in the optical axis direction of the vertical frame portion 265 of the coil holder 260, 3 is not displaced further.
- the optical unit 100 includes a flexible wiring board 410 connected to the movable body 3, and a portion of the flexible wiring board 410 positioned in the cylindrical case 120 is illustrated in FIG. 3 is connected to the imaging unit 1 shown in FIG.
- the flexible wiring board 410 extends from one side + Y portion 412 in the Y-axis direction connected to the movable body 3 toward the other side ⁇ Y, and then is folded back toward the one side + Y to be exposed to the outside. Has been pulled out.
- the flexible wiring board 410 has a long dimension because the folded portion 413 is provided between the portion connected to the movable body 3 and the portion drawn to the outside. Therefore, the flexible wiring board 410 smoothly follows the swing of the movable body 3, so that a large load is not applied to the movable body 3.
- the flexible wiring board 410 is formed with a wide slit 418 extending along the extending direction (Y-axis direction) in the middle of the length direction, and is divided into two parts 416 and 417. Yes. For this reason, the rigidity of the flexible wiring board 410 is relaxed. Therefore, the flexible wiring board 410 smoothly follows the swing of the movable body 3, so that a large load is not applied to the movable body 3.
- the flexible wiring board 410 overlaps the movable body 3 in the optical axis direction, but a portion that overlaps the swing fulcrum 180 is a slit 418. For this reason, even if the flexible wiring board 410 is arranged at a position overlapping the movable body 3 in the optical axis direction, there is no problem in providing the swing fulcrum 180.
- the folded portion 413 of the flexible wiring board 410 is a swing center of the movable body 3 at the swing support point 180 (contact portion between the receiving plate 181 and the hemispherical protrusion 182). And at approximately the same height. For this reason, the displacement of the flexible wiring board 410 when the movable body 3 swings can be kept small. Accordingly, since the influence of the flexible wiring board 410 on the movable body 3 can be reduced, the movable body 3 can be rocked with high accuracy.
- FIG. 10 is an XY cross-sectional view of the optical unit 100 with a shake correction function according to the first embodiment of the present invention.
- illustration of the imaging unit 1 the upper case 130, and the like is omitted, and only the cylindrical case 120 is illustrated.
- illustration of a rigid substrate and a spacer positioned on the back side of the photo reflector 580 and a flexible wiring substrate 490 is omitted.
- the receiving plate 181 fixed to the lower cover 270 comes into contact with the protrusion 182 of the movable body 3, and the swing fulcrum is supported. 180 is configured.
- the movable body side connecting portion 610 is pushed up to the subject side relative to the fixed body side connecting portion 620, and the arm portion 630 of the spring member 600 attaches the movable body 3 to the rear side in the optical axis direction. Rush. Therefore, the protrusion 182 on the movable body 3 side abuts on the lower cover 270 side with elasticity, and the movable body 3 is supported by the fixed body 200 so as to be swingable by the swing support point 180.
- the swing fulcrum 180 passes through the Y-axis direction.
- the magnet 520 (the first magnet 520a and the third magnet 520c) and the air-core coil 560 (the first air-core coil 560a and the second air-core coil 560a)
- the third air core coil 560c) is located, and the magnet 520 and the air core coil 560 constitute a Y-side shake correction drive mechanism 500y (a shake correction drive mechanism 500).
- the Y-side shake correction drive mechanism 500y swings the movable body 3 about the axis X0 extending in the X-axis direction through the swing fulcrum 180.
- the movable body 3 is moved on both sides in the X-axis direction on the axis X0 extending in the X-axis direction through the swing fulcrum 180.
- Magnets 520 (second magnet 520b and fourth magnet 520d) and air-core coil 560 (second air-core coil 560b and fourth air-core coil 560d) are located at the two positions, and magnet 520 and air-core coil 560 are located.
- Constitutes an X-side shake correction drive mechanism 500x (a shake correction drive mechanism 500).
- the X-side shake correction drive mechanism 500x swings the movable body 3 about the axis Y0 that extends in the Y-axis direction through the swing fulcrum 180.
- the shake is detected by a gyroscope or the like, and a control IC (not shown) controls the shake correction drive mechanism 500. . That is, a drive current that cancels the shake detected by the gyroscope is supplied to the air-core coil 560.
- the X-side shake correction drive mechanism 500x swings the imaging unit 1 about the Y axis about the swing fulcrum 180.
- the Y-side shake correction drive mechanism 500y swings the imaging unit 1 around the X axis about the swing fulcrum 180.
- the movable body 3 can be displaced with respect to the entire XY plane. Therefore, all shakes assumed in the optical unit 100 can be reliably corrected.
- the second photoreflector 580b and the first photoreflector 580a detect the distance (displacement) from the movable body 3, and the shake correction drive mechanism 500 operates at the second photoreflector 580b and the first photoreflector 580a. Control is performed based on the detection result.
- each of the four side surfaces 264 of the coil holder 260 of the fixed body 200 is empty.
- Core coils 560 a first air core coil 560a, a second air core coil 560b, a third air core coil 560c, and a fourth air core coil 560d
- magnets 520 first magnet 520a, second magnet 520b, third magnet 520c, and fourth magnet
- side surfaces 126 side surfaces 126a, 126b, 126c, 126d
- the inner region 561 of the air-core coil 560 is used.
- a surface mount type first photoreflector 580a is mounted on the inner region 561 of the first air-core coil 560a in the band-like portion 460 of the flexible wiring board 490, and the second empty A surface mount type second photo reflector 580b is mounted on the inner region 561 of the core coil 560b. Therefore, when the optical unit 100 is assembled, as shown in FIGS. 8 to 10, on the side surface 264a facing the other side ⁇ Y on the one side + Y in the Y-axis direction, the axis line in the inner region 561 of the first air-core coil 560a.
- a first photoreflector 580a is provided at a position overlapping Y0 in the Z-axis direction, and on the side surface 264b facing the other side -X on one side + X in the X-axis direction, an axis line is formed in the inner region 561 of the second air-core coil 560b.
- a second photo reflector 580b is provided at a position overlapping X0 in the Z-axis direction.
- the first photo reflector 580a has the light emitting portion and the light receiving portion opposed to the first magnet 520a in the Y axis direction
- the second photo reflector 580b has the light emitting portion and the light receiving portion in the X axis direction and the second magnet 520b. Opposite to.
- FIG. 11 is an explanatory diagram of the smooth layer 590 used in the optical unit 100 with a shake correction function according to the first embodiment of the present invention, and FIGS. 11 (a), 11 (b), 11 (c), and 11 (d).
- FIGS. 11 (a), 11 (b), 11 (c), and 11 (d) are an explanatory diagram showing a state in which a smooth layer 590 is laminated on the surface of the magnet 520, an explanatory diagram showing a result of measuring the surface roughness of the smooth layer 590, an explanatory diagram showing a state of the surface of the magnet 520, and the surface of the magnet 520 It is explanatory drawing which shows the result of measuring roughness.
- FIG. 11 is an explanatory diagram of the smooth layer 590 used in the optical unit 100 with a shake correction function according to the first embodiment of the present invention
- FIGS. 11 (a), 11 (b), 11 (c), and 11 (d) are an explanatory diagram showing a state in which a smooth layer 590 is laminated
- FIG. 12 is an explanatory diagram showing the uniformity of the reflection characteristics of the smooth layer 590 used in the optical unit 100 with a shake correction function according to the first embodiment of the present invention
- FIG. 5 is an explanatory diagram showing a method for measuring the uniformity of the reflection characteristics of the smooth layer 590, and an explanatory diagram showing a measurement result of the uniformity of the reflection characteristics of the smooth layer 590.
- FIG. 13 is an explanatory diagram showing an output from the photo reflector 580 when the movable body 3 is swung in the optical unit 100 with a shake correction function according to the first embodiment of the present invention.
- (B) are explanatory views showing the output from the photo reflector 580 when the movable body 3 is swung around the axis X0, and the photo reflector 580 when the movable body 3 is swung around the axis Y0. It is explanatory drawing which shows the output from.
- each of the smooth layers 590 (the first smooth layer 590a and the second smooth layer 590b) is made of a resin tape, a metal sheet, a coating layer, plate glass, or a reflector.
- a polyamide resin tape having a thickness of about 50 ⁇ m is used as the smooth layer 590, and the hue thereof is a light color system such as yellow.
- the smooth layer 590 is provided over the entire region facing the photo reflector 580 when the movable body 3 swings. Therefore, even when the movable body 3 swings, the first photo reflector 580a always has the light emitting portion and the light receiving portion opposed to the first smoothing layer 590a in the Y-axis direction, and the second photo reflector 580b is always The light emitting part and the light receiving part are opposed to the second smooth layer 590b in the X-axis direction. Therefore, even when the movable body 3 swings, the light emitted from the light emitting part of the first photo reflector 580a is always reflected by the first smoothing layer 590a and received by the light receiving part of the first photo reflector 580a. The light emitted from the light emitting part of the second photo reflector 580b is always reflected by the second smoothing layer 590b and received by the light receiving part of the second photo reflector 580b.
- the magnet 520 is a sintered magnet, and the surface is flat as shown in FIG. 11 (c). However, as shown in FIG. 11 (d), minute irregularities are distributed on the surface, It has a roughness of about 7.5 ⁇ m.
- the smooth layer 590 not only has a flat surface as shown in FIG. 11A, but also has a smooth surface as shown in FIG. It has a roughness of about 5 ⁇ m. Accordingly, as shown in FIG. 12A, a magnet 520 or a laminate of a smooth layer 590 on the surface of the magnet 520 is used as a reflector, and the photo reflector is moved while moving the reflector from a position 1 mm away from the photo reflector 580.
- the results indicated by the white circles and the solid line L590 are the results when the smooth layer 590 is laminated on the surface of the magnet 520 as a reflector, and even if the moving body moves, the photo reflector 580 The output from is almost constant.
- the results other than the results indicated by the white circles and the solid line L590 are the results when the surface of the magnet 520 without the smooth layer 590 (magnet 520 alone) is used as a reflector. Yes, when the moving body moves, the output from the photo reflector 580 varies greatly.
- the output from the first photoreflector 580a and the output from the second photoreflector 580b are respectively shown in FIG. 13 (a) changes as indicated by a solid line L1y and a dotted line L2y.
- the output from the first photo reflector 580 a is substantially constant, and the output from the second photo reflector 580 b changes linearly with respect to the swing angle of the movable body 3.
- the output from the first photo reflector 580a and the output from the second photo reflector 580b are respectively shown in FIG. It changes as shown by the solid line L1x and the dotted line L2x in (b).
- the output from the second photo reflector 580 b is substantially constant, and the output from the first photo reflector 580 a changes linearly with respect to the swing angle of the movable body 3.
- the distance from the movable body 3 when the movable body 3 is driven by the Y-side shake correction drive mechanism 500y and rotated about the axis X0 is known.
- the displacement of the body 3 in the Y-axis direction can be monitored.
- the distance from the movable body 3 when the movable body 3 is driven by the X-side shake correction drive mechanism 500x and rotated around the axis Y0 is known. Axial displacement can be monitored.
- the rotation of the movable body 3 about the axis X0 and the axis line can be monitored independently.
- the rotation around Y0 can be controlled independently.
- FIG. 14 is an explanatory view showing a structure for fixing the photo reflector 580 to the fixed body 200 (coil holder 260) provided in the optical unit 100 with a shake correction function according to Embodiment 1 of the present invention.
- a), (b), and (c) are explanatory views showing a state in which the first photo reflector 580a is mounted on the coil holder 260 as seen from the inside of the coil holder 260, and a flexible wiring board on which the second photo reflector 580b is mounted.
- FIG. 4 is an explanatory diagram showing a state where a belt-like portion 460 of 490 is viewed from the inside, and an explanatory diagram showing a state where an air-core coil 560 is removed from the belt-like portion 460 of the flexible wiring board 490 when viewed from the inside.
- FIG. 15 is an explanatory diagram of spacers and the like provided in the optical unit 100 with a shake correction function according to the first embodiment of the present invention, and FIGS. 15A and 15B both illustrate the first photo reflector 580a. It is explanatory drawing which shows a mode that a spacer is provided in the 2nd photo reflector 580b.
- FIG. 16 is an explanatory diagram showing the relationship between the distance between the photo reflector 580 and the reflecting surface (smooth surface 590) and the output current value from the photo reflector 580.
- the photo reflector 580 (the first photo reflector 580 a and the second photo reflector 580 b) has an air core coil 560 (a first air core coil 560 a and a second air core coil 560 b). And mounted on a common flexible wiring board 490.
- the photo reflector 580 (the first photo reflector 580 a and the second photo reflector 580 b) has a magnet 520 (first electrode) from the back surface of the air core coil 560 in the inner region 561 of the air core coil 560.
- the thickness dimension of the photo reflector 580 is smaller than the thickness dimension of the air-core coil 560.
- the thickness dimension of the photo reflector 580 is smaller than that of the air core coil 560. Therefore, the photo reflector 580 (the first photo reflector 580a and the second photo reflector 580b) is movable at the approximate center in the thickness direction of the air core coil 560 (the first air core coil 560a and the second air core coil 560b).
- the air core coil 560 is disposed in the inner region 561 so as not to protrude from the end surface of the air core coil 560 facing the body 3. Therefore, the distance between the photo reflector 580 (the first photo reflector 580a and the second photo reflector 580b) and the magnet 520 (the first magnet 520a and the second magnet 520b) is shortened. According to such a configuration, as described below with reference to FIG. 16, the sensitivity of the photo reflector 580 (the first photo reflector 580a and the second photo reflector 580b) can be improved.
- the separation distance between the photo reflector 580 and the smooth layer 590 as the reflecting surface and the output current from the photo reflector 580 have the relationship shown in FIG. As can be seen from FIG. 16, the shorter the separation distance between the photo reflector 580 and the smooth layer 590 as the reflecting surface, the larger the output current from the photo reflector 580, and the longer the distance between the photo reflector 580 and the smooth layer 590. Accordingly, the output current from the photo reflector 580 decreases in a curved manner. That is, when the distance between the photo reflector 580 and the smoothing layer 590 becomes longer, the output current from the photo reflector 580 decreases rapidly and then gradually decreases.
- the movable body 3 (magnet 520) is displaced by 0.5 mm, and the distance is 3 mm. Then, only the change indicated by ⁇ C3 occurs, whereas when the separation distance is 1 mm, the change indicated by ⁇ C1 ( ⁇ C1> ⁇ C3) occurs. Therefore, higher sensitivity can be obtained when the distance between the photo reflector 580 and the smooth layer 590 is shorter.
- the first air-core coil 560 a and the second air-core coil 560 b are mounted on the belt-like portion 460 of the flexible wiring board 490.
- the periphery of the portion where the photo reflector 580 is mounted is cut out in three directions, and the portion where the photo reflector 580 is mounted is the narrow portion 465 (the first narrow portion 465a and the second narrow portion). 465b).
- the narrow width portion 465 is bent toward the side where the movable body 3 is located as compared to the belt-shaped portion 460, and the rectangular hole 469 is formed in the belt-shaped portion 460.
- a reinforcing rigid substrate 480 is placed behind the narrow portion 465 (the first narrow portion 465a and the second narrow portion 465b).
- the first rigid substrate 480a and the second rigid substrate 480b are bonded.
- the rigid substrate 480 is smaller than the hole 469.
- plate-like spacers 470 (first spacer 470 a and second spacer 470 b) are arranged behind the rigid substrate 480, and the spacer 470 is larger than the rigid substrate 480.
- the spacer 470 includes a plate-like main body portion 471 that is larger than the hole 469 and located outside the band-shaped portion 460, and a protrusion 472 that protrudes from the plate-like main body portion 471 toward the movable body 3.
- the protrusion 472 is smaller than the plate-like main body 471 and the hole 469. For this reason, the plate-like main body portion 471 of the spacer 470 is bonded at two locations sandwiching the hole 469 on both sides in the optical axis direction on the outer surface of the band-like portion 460. In this state, the protrusion 472 causes the rigid substrate 480 to be attached from behind. Press toward the side where the movable body 3 is located.
- the narrow width portion 465 on which the photo reflector 580 is mounted is bent toward the inner region 561 of the air-core coil 560. Therefore, the photo reflector 580 is mounted on the flexible wiring board 490 that is common to the air core coil 560, but is shifted to the side where the magnet 520 is located from the back surface of the air core coil 560 in the inner region 561 of the air core coil 560.
- the air core coil 560 is disposed at a substantially central position in the thickness direction.
- the rigid substrate 480 is disposed between the bent portion 495 and the first spacer 470a.
- the rigid substrate 480 is bonded to the bent portion 495.
- the photo reflector 580 has a rectangular planar shape, and has a short side and a long side.
- the photo reflector includes the center of the light emitting unit on one side in the longitudinal direction and the center of the light receiving unit on the other side.
- a light shielding part is formed between the light emitting part and the light receiving part.
- the photo reflector 580 has a longitudinal direction oriented in a direction around the optical axis. That is, the first photo reflector 580a and the second photo reflector 580b are arranged in such a direction that the center of the light emitting unit and the center of the light receiving unit are aligned in the direction around the optical axis.
- first photo reflector 580a and the second photo reflector 580b are arranged in opposite directions so that the light receiving parts (the centers of the light receiving parts) are separated from each other. Accordingly, the light emitted from the first photo reflector 580a is not easily received by the second photo reflector 580b as stray light, and the light emitted from the second photo reflector 580b is hardly received by the first photo reflector 580a as stray light.
- the movable body 3 can be swung around the swing fulcrum 180 when the shake correction drive mechanism 500 is operated. it can. Therefore, even when the optical unit 100 is shaken due to camera shake or the like, the shake can be corrected by swinging the movable body 3.
- the first photo reflector 580a is provided in the inner region of the first air core coil 560a in the two directions intersecting the optical axis direction, and the second photo reflector is provided in the inner region of the second air core coil 560b. 580b is provided. Therefore, the displacement of the movable body 3 in each of the two directions can be monitored, and the shake correction drive mechanism 500 can be controlled based on the monitoring result.
- the reflective smooth layer 590 (the first smooth layer 590 a and the second smooth layer 590 a and the second photo reflector 580 b) is disposed in a region facing the photo reflector 580 (the first photo reflector 580 a and the second photo reflector 580 b). Since the smooth layer 590b) is laminated, the photo reflector 580 always faces the smooth layer 590 even if the movable body 3 swings. For this reason, even if there is a scratch or the like in a region facing the photo reflector 580, such a scratch is covered with the reflective smooth layer 590, so that appropriate reflected light always returns to the photo reflector 580. come.
- the photo reflector 580 is provided by utilizing the gap between the side surface of the movable body 3 and the side surface of the fixed body 200, an appropriate amount between the output from the photo reflector 580 and the swing angle of the movable body 3 can be obtained. Correlation can be obtained, and swinging of the movable body 3 can be monitored with high accuracy. Therefore, the swing of the movable body 3 can be accurately controlled.
- the smooth layer 590 is laminated on the surface (plane) of the magnet 520, the smooth layer 590 is laminated flat only by laminating the smooth layer 590 on the surface of the magnet 520.
- the photo reflector 580 is provided in an empty space called an inner region 561 of the air-core coil 560 used in the shake correction drive mechanism 500. Therefore, even when the photo reflector 580 is provided, it is possible to prevent an increase in the size of the optical unit 100 in the optical axis direction and the direction intersecting the optical axis direction. Since the photo reflector 580 is provided in the inner region 561 of the air-core coil 560, it is surrounded by the air-core coil 560. Therefore, the air-core coil 560 can prevent light emitted from one of the two photo reflectors 580 from entering the other photo reflector as leakage light. Therefore, the photoreflector 580 can be prevented from being erroneously detected due to leakage light, so that the tilt of the optical axis can be accurately corrected.
- the photo reflector 580 is provided in the inner region 561 of the air core coil 560 at a position shifted from the back surface of the air core coil 560 toward the side where the magnet 520 is located, the photo reflector 580 and the smoothing layer 590 are correspondingly provided.
- the separation distance is short.
- the smooth layer 590 is laminated on the surface of the magnet 520, the distance between the photo reflector 580 and the reflecting surface is short. Therefore, as described with reference to FIG. 16, there is an advantage that the sensitivity of the photo reflector 580 is high.
- the air-core coil 560 and the photo reflector 580 are provided on the fixed body 200 side, and the shake correction drive mechanism 500 moves the movable body 3 to the rear side in the optical axis direction from the center position in the optical axis direction of the movable body 3. It swings around the provided swinging fulcrum 180. Therefore, as compared with the configuration in which the air core coil 560 and the photo reflector 580 are provided on the movable body 3 side, there is no need to connect the wiring member to the air core coil 560 and the photo reflector 580 on the movable body 3 side. There is.
- FIGS. 17A and 17B are explanatory diagrams showing a displacement amount detection method in the optical unit 100 with a shake correction function according to an improved example of the first embodiment of the present invention.
- FIGS. 17A and 17B are shake correction functions.
- 2 is an XY cross-sectional view of the attached optical unit 100 and an explanatory diagram of a differential detection circuit.
- the first photo reflector 580a is provided in the inner region 561 of the first air core coil 560a
- the second photo reflector 580b is provided in the inner region 561 of the second air core coil 560b.
- a third photo reflector 580c may be provided in the inner region 561 of the third air core coil 560c
- a fourth photo reflector 580d may be provided in the inner region 561 of the fourth air core coil 560d. More specifically, on the side surface 264c facing the one side + Y on the other side -Y in the Y-axis direction, the third photo is located at a position overlapping with the axis Y0 in the Z-axis direction in the inner region 561 of the third air-core coil 560c.
- the fourth photo is positioned at the position overlapping the axis X0 in the Z-axis direction in the inner region 561 of the fourth air core coil 560d
- a reflector 580d is provided.
- the smoothing layer 590 is provided at a position facing the first photo reflector 580a, the second photo reflector 580b, the third photo reflector 580c, and the fourth photo reflector 580d.
- FIGS. 18A and 18B are explanatory views showing the overall configuration of an optical unit with a shake correction function according to Embodiment 2 of the present invention.
- FIGS. 18A and 18B show the optical unit on the subject side (in the optical axis direction). It is the perspective view when seen from the front side, and its exploded perspective view.
- 19 is an exploded perspective view of the main part of the optical unit 100 with a shake correction function according to the second embodiment of the present invention.
- FIGS. 19A and 19B are views in the X-axis direction and the Y-axis direction. It is the disassembled perspective view seen from the mutually opposite direction. Since the basic configuration of this embodiment is the same as that of Embodiment 1, common portions are denoted by the same reference numerals and description thereof is omitted.
- the optical unit 100 shown in FIG. 18 is a thin camera used in the optical device 1000 shown in FIG. 1 and is mounted in a state supported by the chassis 1100 (device main body) of the optical device 1000.
- the As shown in FIG. 18, flexible wiring boards 400, 410, 450 for feeding power to the imaging unit 1 and the shake correction drive mechanism are drawn out to the optical unit 100, and the flexible wiring boards 400, 410 are drawn out. , 450 are electrically connected to an upper control unit provided on the main body side of the optical apparatus 1000 via a connector (not shown) or the like.
- the flexible wiring board 410 also has a function of outputting a signal from the imaging unit 1. For this reason, since the flexible wiring board 410 has a large number of wires, a flexible wiring board 410 having a relatively wide width is used.
- the imaging unit 1 has a rectangular box-shaped cylindrical case 120 made of a ferromagnetic plate such as a steel plate. Inside the cylindrical case 120, a holder for holding the lens 1 a, a holder A cylindrical sleeve for holding the lens, a lens driving mechanism for driving the lens 1a in the focusing direction, an image sensor disposed on the rear side in the optical axis direction, an element holder for holding the image sensor, and the like are provided.
- the outer peripheral portion of the imaging unit 1 is composed of a cylindrical case 120.
- the optical unit 100 includes a fixed body 200, a movable body 3 including the imaging unit 1, and a swing fulcrum in a state where the movable body 3 is supported so as to be displaceable with respect to the fixed body 200.
- 180 and a shake correction drive mechanism 500 that generates a magnetic drive force that causes the movable body 3 to be displaced relative to the fixed body 200 between the movable body 3 and the fixed body 200.
- the optical unit 100 has a spring member 600 that urges the movable body 3 toward the swing fulcrum 180.
- the fixed body 200 includes an upper cover 250, a lower cover 270, and the like.
- the upper cover 250 includes a rectangular tubular body 210 that surrounds the imaging unit 1, and an opening on the subject side of the rectangular tubular body 210. And an end plate portion 220 to be closed.
- the end plate 220 is formed with a window 220a through which light from the subject enters.
- the end of the rectangular tubular body 210 opposite to the subject (+ Z side
- a notch 219 is formed on two side surfaces facing each other in the X-axis direction, and a notch 218 is formed on two side surfaces facing each other in the Y-axis direction.
- the notch 218 located on one side + Y in the Y-axis direction is used to pull out the flexible wiring board 410 and the like, and the other notches 218 and 219 are the upper cover 250.
- the lower cover 270 are used for bonding by welding or welding.
- the lower cover 270 is a press-processed product for a metal plate, and includes a substantially rectangular bottom plate portion 271 and three side plate portions 272 that rise from the outer peripheral edge of the bottom plate portion 271 toward the subject side, and the side plate portion 272. The side where is not formed is used to draw out the flexible wiring board 400 and the like.
- the bottom plate portion 271 of the lower cover 270 is provided with a swing fulcrum 180 at its center position. The swing fulcrum 180 contacts the rear end of the movable body 3 in the optical axis direction, thereby moving the movable body 3. It is swingably supported.
- FIG. 20 is an exploded perspective view of the movable body 3 of the optical unit 100 with a shake correction function according to the second embodiment of the present invention.
- the movable body 3 includes the imaging unit 1, a rectangular frame-shaped holder 7 that surrounds the outer peripheral surface of the cylindrical case 120 of the imaging unit 1, and a stopper member 8.
- the stopper member 8 is fixed to the rear surface of the holder 7 in the optical axis direction by a method such as welding.
- the holder 7 includes a rectangular frame-shaped first holder member 71 located on the front side in the optical axis direction and a rectangular frame-shaped second holder member 72 facing the first holder member 71 on the rear side in the optical axis direction.
- a flat magnet 520 used for the shake correction drive mechanism 500 is held between the first holder member 71 and the second holder member 72. More specifically, the first holder member 71 is fixed to the front surface of the magnet 520 in the optical axis direction, and the second holder member 72 is fixed to the rear surface of the magnet 520 in the optical axis direction.
- a square tube-shaped magnet assembly 75 is configured by the first holder member 71 and the second holder member 520.
- the imaging unit 1 is inserted inside the rectangular cylindrical magnet assembly 75, the outer peripheral surface of the cylindrical case 120 of the imaging unit 1 and the inner peripheral surface of the magnet assembly 75 (the inner surface of the magnet 520) are bonded. If fixed by the agent 73 (see FIGS. 21B and 21C), etc., the magnet 520, the first holder member 71, the second holder member 72, the stopper member 8, and the imaging unit 1 are integrated to form the movable body 3. Can be configured.
- the second holder member 72 has a rectangular tube shape with a side plate portion 72a, an end portion on the rear side in the optical axis direction of the side plate portion 72a located on one side + X in the X axis direction, and the Y axis direction. Cutouts 72c and 72d are formed at the end on the rear side in the optical axis direction of the side plate portion 72a located on the one side + Y.
- the notches 72c and 72d are used as a part of an optical path of a photo reflector 580 (first photo reflector 580a and second photo reflector 580b) described later.
- the spring member 600 includes a rectangular frame-shaped fixed body side connecting portion 620 connected to the fixed body 200 side, a movable body side connecting portion 610 connected to the movable body 3 side, a movable body side connecting portion 610, and a fixed body side connecting portion 620.
- the arm portions 630 are connected to the movable body side connecting portion 610 and the fixed body side connecting portion 620, respectively.
- the fixed body side connecting portion 620 includes a rectangular frame-shaped main body portion 621 and a convex portion 622 that protrudes outward at the center position of the side portion of the main body portion 621.
- the movable body side connecting portion 610 is fixed to the rear end surface in the optical axis direction of the stopper member 8 by a method such as welding.
- the fixed body side connecting portion 620 is fixed to the upper end portion of the side plate portion 272 of the lower cover 270 by a method such as welding in a state where the convex portion 622 is fitted in the notches 218 and 219 of the upper cover 250.
- the spring member 600 is made of a nonmagnetic metal such as beryllium copper or a nonmagnetic SUS steel material, and is formed by pressing a thin plate having a predetermined thickness or etching using a photolithography technique.
- the movable body side connecting portion 610 of the spring member 600 is connected to the movable body 3 and the fixed body side connecting portion 620 is fixed to the fixed body 200
- the movable body 3 is pushed up to the front side in the optical axis direction by the swing fulcrum 180. It will be in the state.
- the spring member 600 the movable body side connecting portion 610 is pushed up to the front side in the optical axis direction relative to the fixed body side connecting portion 620, and the arm portion 630 of the spring member 600 moves the movable body 3 to the rear side in the optical axis direction.
- the movable body 3 is biased toward the swing fulcrum 180 by the spring member 600, and the movable body 3 is supported by the fixed body 200 so as to be swingable by the swing fulcrum 180. It becomes.
- FIG. 21 is a cross-sectional view of the optical unit 100 with a shake correction function according to the second embodiment of the present invention, and FIGS. 21 (a), (b), and (c) are optical at positions passing through the photo reflector 580.
- FIG. It is XY sectional drawing, YZ sectional drawing, and XZ sectional drawing when a unit is cut
- the lens holder and the like are not shown inside the imaging unit.
- the shake correction drive mechanism 500 is configured by the coil unit 560 s and the magnet 520 that generates a magnetic field interlinked with the coil unit 560 s.
- flat magnets 520 are fixed to the four side surfaces 120 a, 120 b, 120 c, 120 d of the cylindrical case 120 in the movable body 3, and the rectangular cylindrical body 210 of the upper cover 250 is fixed.
- the coil portion 560s is disposed on the inner surface.
- the magnet 520 is magnetized with different poles on the outer surface side and the inner surface side.
- the magnet 520 is composed of two magnet pieces arranged in the direction of the optical axis L, and the magnet piece is magnetized to a pole whose surface facing the coil portion 560s is different in the optical axis direction.
- the coil portion 560s is formed in a rectangular frame shape, and the upper and lower long side portions are used as effective sides.
- the magnets 520 and the coil portions 560s disposed at two positions sandwiching the movable body 3 on both sides in the Y-axis direction constitute a Y-side shake correction drive mechanism 500y.
- the movable body 3 is swung around an axis line X0 extending in the X-axis direction through the swing fulcrum 180.
- the magnet 520 and the coil portion 560s arranged at two positions sandwiching the imaging unit 1 on both sides in the X-axis direction constitute an X-side shake correction drive mechanism 500x, and arrows Y1 and Y2 in FIG.
- the movable body 3 is swung around an axis line Y0 extending in the Y-axis direction through the rocking fulcrum 180.
- a sheet-like coil body 550 extending along the four inner surfaces of the upper cover 250 is used.
- the sheet-like coil body 550 four coil portions 560s are integrally formed with a predetermined interval.
- the sheet-like coil body 550 has a shape that extends in a band shape when unfolded, and is bent onto the four inner surfaces of the upper cover 250 by a method such as surface bonding to the inner surface of the upper cover 250. It is fixed.
- the sheet-like coil body 550 has a structure in which a coil portion 560s made of fine copper wiring is formed on a printed board using a conductive wiring technique, and a plurality of layers of copper wiring (coil portion 560s) are insulated. It is formed in multiple layers through a film. The surface of the copper wiring (coil portion 560s) is also covered with an insulating film.
- an FP coil Fe Pattern Coil (registered trademark) manufactured by Asahi Kasei Electronics Corporation can be exemplified.
- one surface 557 among the four surfaces 556 to 559 of the sheet-like coil body 550 bent into a rectangle is formed by a plurality of conductive layers extending from the four coil portions 560s.
- Terminal portion 565 is formed.
- the terminal portion 565 faces the outer side opposite to the inner side facing the magnet 520 in the sheet-like coil body 550.
- the terminal portion 565 is electrically connected to the flexible wiring board 450 disposed so as to overlap the surface 557 of the sheet-like coil body 550, and is supplied with power through the flexible wiring board 450.
- the sheet-like coil body 550 since the sheet-like coil body 550 is used, the distance between the imaging unit 1 and the fixed body 200 can be reduced as compared with the case where a single air-core coil is used. The size of the optical unit 100 can be reduced. In the case of the sheet-like coil body 550, since the plurality of coil portions 560s are provided integrally with the terminal portion 565, even when the coil portions 560s are arranged at a plurality of locations around the optical axis L, the sheet-like coil body 550. May be extended around the optical axis L.
- the sheet-like coil body 550 since the terminal portion 565 faces the outside opposite to the side facing the magnet 520, electrical connection to the coil portion 560s, that is, a flexible wiring board to the terminal portion 565 is provided. 450 connections can be made easily.
- a flexible wiring board 450 is placed on the outside of a sheet-like coil body 550 bent into a rectangle.
- the flexible wiring board 450 includes a first portion 451 and a first portion 451 that are bent at right angles so as to overlap with one side of the X-axis direction + X surface 556 and one side of the Y-axis direction + Y surface 557 of the sheet-like coil body 550.
- Two ends 452 are provided, and an end portion 453 bent at the rear end portion in the optical axis direction of the second portion 452 is connected to the flexible wiring board 400 outside.
- notches 556a, 557a, 558a, and 559a are formed on the rear end portions in the optical axis direction on any of the four surfaces 556 to 559. Further, the notches 556a and 557a formed on the one side + X surface 556 in the X-axis direction and the one side + Y surface 557 in the Y-axis direction are the notches 558a of the other surfaces 558 and 559 in the central portion in the side direction. 559a is cut deeper toward the front side in the optical axis direction.
- Photo reflectors 580 are surface-mounted inside the first portion 451 that overlaps the surface 556 on the outside, and each of the photo reflectors 580 is a sheet-like coil body 550. Are located within the notches 556a, 557a.
- the first photo reflector 580a moves in the Y-axis direction of the upper cover 250 at a position overlapping the axis Y0 extending in the Y-axis direction through the swing fulcrum 180 in the Z-axis direction.
- the light emitting portion and the light receiving portion of the first photo reflector 580a are held on the one side + Y surface of the first side 31 of the movable body 3 (the side surface 120a of the cylindrical case 120), and the second holder member 72 has a notch 72d. Will face each other.
- the first photo reflector 580a is disposed between the shake correction drive mechanism 500 (the X side shake correction drive mechanism 500x and the Y side shake correction drive mechanism 500y) and the swing fulcrum 180 in the optical axis direction.
- the first photo reflector 580a is provided between the spring member 600 and the shake correction drive mechanism 500 (the X side shake correction drive mechanism 500x and the Y side shake correction drive mechanism 500y) in the optical axis direction. Placed in.
- the first photo reflector 580a is thicker than the sheet-like coil body 550, and the light emitting portion and the light receiving portion of the first photo reflector 580a are about 1 mm on the first side surface 31 of the movable body 3 (side surface 120a of the cylindrical case 120). Will face each other through the distance.
- the second photo reflector 580b is a surface located on one side + X in the X-axis direction of the upper cover 250 at a position overlapping with the axis X0 extending in the X-axis direction through the swing fulcrum 180 in the Z-axis direction.
- the light emitting part and the light receiving part of the second photo reflector 580b are opposed to the second side surface 32 of the movable body 3 (side surface 120b of the cylindrical case 120) via the notch 72c of the second holder member 72. become.
- the second photo reflector 580b is disposed between the shake correction drive mechanism 500 (the X side shake correction drive mechanism 500x and the Y side shake correction drive mechanism 500y) and the swing fulcrum 180 in the optical axis direction.
- the second photo reflector 580b is provided between the spring member 600 and the shake correction drive mechanism 500 (the X side shake correction drive mechanism 500x and the Y side shake correction drive mechanism 500y) in the optical axis direction. Placed in.
- the second photo reflector 580b is thicker than the sheet-like coil body 550, and the light emitting portion and the light receiving portion of the second photo reflector 580b are about 1 mm on the second side surface 32 of the movable body 3 (side surface 120b of the cylindrical case 120). Will face each other through the distance.
- a reflective first smoothing layer 590a is stacked in a region facing the first photo reflector 580a on the first side surface 31 of the movable body 3, and the second photo reflector 580b is laminated on the second side surface 32 of the movable body 3.
- a reflective second smooth layer 590b is laminated in a region facing the.
- Each of the smooth layers 590 (the first smooth layer 590a and the second smooth layer 590b) is made of a resin tape, a metal sheet, a coating layer, plate glass, or a reflector.
- the smooth layer 590 is composed of a resin tape, a metal sheet, a sheet glass, a reflector, and a coating layer that is applied to the movable body 3 and cured after being applied to the movable body 3 with an adhesive or the like. .
- the distance between the photo reflector 580 and the smooth layer 590 and the output current from the photo reflector 580 have the relationship described with reference to FIG. Therefore, according to this embodiment, since the distance between the photo reflector 580 and the smooth layer 590 is about 1 mm, the photo reflector 580 exhibits high sensitivity.
- the output current from the photo reflector 580 with respect to the amount of change in the distance while the change in the distance between the photo reflector 580 and the reflecting surface is small. It changes almost linearly. Therefore, when controlling the shake correction drive mechanism 500 (the X side shake correction drive mechanism 500x and the Y side shake correction drive mechanism 500y) based on the output current from the photo reflector 580, the control is easy.
- the photo reflector 580 has a rectangular planar shape, and has a short side and a long side.
- the photo reflector 580 includes the center of the light emitting unit on one side in the longitudinal direction and the center of the light receiving unit on the other side.
- a light shielding part is formed between the light emitting part and the light receiving part.
- the photo reflector has its longitudinal direction oriented in the direction around the optical axis. That is, the first photo reflector 580a and the second photo reflector 580b are arranged in such a direction that the center of the light emitting unit and the center of the light receiving unit are aligned in the direction around the optical axis.
- first photo reflector 580a and the second photo reflector 580b are arranged in opposite directions so that the light receiving parts (the centers of the light receiving parts) are separated from each other. Accordingly, the light emitted from the first photo reflector 580a is not easily received by the second photo reflector 580b as stray light, and the light emitted from the second photo reflector 580b is hardly received by the first photo reflector 580a as stray light.
- the movable body 3 is in a state of being supported by the fixed body 200 so as to be swingable by the swing support point 180. Therefore, when a large force is applied from the outside and the movable body 3 is largely displaced, the arm portion 630 of the spring member 600 may be plastically deformed. Therefore, in this embodiment, a stopper mechanism described below is provided.
- a rectangular frame-shaped stopper member 8 is fixed to the rear end surface in the optical axis direction of the holder 7 by a method such as welding.
- the stopper member 8 includes a rectangular frame-shaped main body portion 80 and a convex portion 81 projecting outward from the main body portion 80, and the convex portion 81 projects outward from the magnet 520.
- the convex portion 81 is formed on each of the four side portions of the main body portion 80.
- the convex portion 81 is provided at two locations that are separated from each other in the direction in which the side extends in each of the four side portions of the main body portion 80.
- the convex portion 81 is formed by the four side portions of the main body portion 80. It is provided near both ends (near the corner of the main body portion 80).
- the convex portion 81 has a narrow gap G1 (see FIG. 19) and a lower end portion 555 (see FIG. 19) of the sheet-like coil body 550 provided on the fixed body 200 side on both sides in the X-axis direction and both sides in the Y-axis direction. 21 (b) and (c)). Accordingly, the convex portion 81 and the sheet-like coil body 550 are movable when the movable body 3 is displaced in a direction perpendicular to the optical axis direction between the shake correction drive mechanism 500 and the swing fulcrum 180 in the optical axis direction.
- a stopper mechanism 810 that defines the range is configured.
- the protrusion 81 and the sheet-like coil body 550 are formed between the shake correction drive mechanism 500 and the spring member 600 among the shake correction drive mechanism 500 and the swing fulcrum 180 in the optical axis direction.
- a stopper mechanism 810 that defines a movable range when the movable body 3 is displaced in a direction perpendicular to the optical axis direction is formed.
- the portion with which the convex portion 81 abuts may be any of the portion of the sheet-like coil body 550 where the coil portion 560s is formed and the portion where the coil portion 560s is not formed.
- the place where the part 81 abuts is set in the sheet-like coil body 550 where the coil part 560s is not configured.
- the sheet-like coil body 550 and the magnet 520 face each other through a narrow gap G2, and the gap G2 is slightly larger than the gap G1 between the convex portion 81 and the sheet-like coil body 550. Therefore, the sheet-like coil body 550 and the magnet 520 constitute a stopper mechanism 820 that defines a swing range when the movable body 3 swings.
- abuts the part which the coil part 560s is comprised among the sheet-like coil bodies 550 and the part where the coil part 560s is not comprised may be sufficient as the location where the magnet 520 contact
- the portion where the contact is made is set in the sheet-like coil body 550 where the coil portion 560s is formed.
- the swing range of the movable body 3 can be set with high accuracy. That is, in the shake correction drive mechanism 500, the interval between the sheet-like coil body 550 and the magnet 520 is set with high accuracy. Therefore, if the stopper mechanism 820 is configured using the sheet-like coil body 550 and the magnet 520, the movable mechanism 500 is movable.
- the swing range of the body 3 can be set with high accuracy.
- the movable body 3 is displaced in the direction orthogonal to the optical axis direction by the protrusion 81 protruding from one side of the fixed body 200 and the movable body 3 coming into contact with the other side.
- a stopper mechanism 810 that defines the movable range at the time is provided. More specifically, in this embodiment, the convex body 81 protruding from the movable body 3 abuts on the fixed body 200 side, so that the movable body 3 is A stopper mechanism 810 that defines a movable range when displaced in a direction orthogonal to the optical axis direction is provided.
- the movable range of the movable body 3 is limited. Therefore, the spring member 600 is not plastically deformed and damaged. Further, since the convex portion 81 (stopper mechanism 810) is provided between the shake correction drive mechanism 500 and the swing fulcrum 180 in the optical axis direction, the stopper mechanism 810 operates with a small displacement of the movable body 3. Therefore, plastic deformation of the spring member 600 can be reliably prevented.
- the convex portion 81 (stopper mechanism 810) is provided between the shake correction drive mechanism 500 and the spring member 600 in the optical axis direction. For this reason, since the movable range when the movable body 3 is displaced in the direction orthogonal to the optical axis direction can be restricted more narrowly, the plastic deformation of the spring member 600 can be more reliably prevented.
- the convex portion 81 protrudes from the movable body 3 toward the sheet-shaped coil body 550 side from the magnet 520 and comes into contact with the sheet-shaped coil body 550. For this reason, since the movable range when the movable body 3 is displaced in the direction orthogonal to the optical axis direction can be set with high accuracy, the movable body 3 can be moved in the optical axis direction without disturbing the swinging of the movable body 3. The movable range when displacing in the orthogonal direction can be limited. That is, in the shake correction drive mechanism 500, the interval between the sheet-like coil body 550 and the magnet 520 is set with high accuracy.
- the protrusion 81 is configured to contact the sheet-like coil body 550, the protrusion 81
- the interval with the sheet-like coil body 550 is also set with high accuracy. Therefore, the movable range when the movable body 3 is displaced in the direction orthogonal to the optical axis direction can be set with high accuracy.
- the movable body 3 includes a frame-shaped holder 7 that holds the magnet 520 and a frame-shaped stopper member 8 that is fixed to the rear end surface in the optical axis direction of the holder 7 with a convex portion 81.
- the magnet 520 can be magnetized while being fixed to the holder 7, and the magnet 520 can be easily handled.
- the holder 7 and the stopper member 8 are separate members, the magnetization process can be performed in a state before the stopper member 8 is fixed to the holder 7, so that the stopper mechanism 810 is configured in the magnetization process.
- the convex part 81 does not get in the way.
- the connecting portion of the spring member 600 to the movable body 3 side is a stopper member 8. For this reason, since the spring member 600 is connected to the stopper member 8 fixed with high accuracy, the spring constant of the spring member 600 can be set with high accuracy.
- the convex part 81 is provided in two places spaced apart from each other on each of the four sides of the square shape. For this reason, when the stopper mechanism 810 is actuated, no force in the twisting direction is applied to the movable body 3, so that it is possible to prevent the spring member 600 from being plastically deformed in the twisting direction.
- the Y-side shake correction drive mechanism 500 y swings the imaging unit 1 around the axis X0 about the swing fulcrum 180. Further, if the swing of the imaging unit 1 around the axis line X0 and the swing around the axis line Y0 are combined, the imaging unit 1 can be displaced with respect to the entire XY plane. Therefore, all shakes assumed in the optical unit 100 can be reliably corrected.
- the displacement of the imaging unit 1 is monitored by a photo reflector 580 shown in FIG.
- a region of the fixed body 200 and the movable body 3 that faces the photo reflector 580 (the first photo reflector 580a and the second photo reflector 580b) has a reflective property. Since the smooth layer 590 (the first smooth layer 590a and the second smooth layer 590b) is laminated, the photo reflector 580 always faces the smooth layer 590 even if the movable body 3 swings.
- the flexible wiring board 410 has a wide body portion located outside the optical unit 100, but the portion located inside the optical unit 100 has two strip-like portions having a narrow width dimension. . For this reason, there is no problem in bringing the swinging fulcrum 180 into contact with the movable body 3. Moreover, since the flexible wiring board 410 has two strip-shaped portions with a narrow width dimension, the portion located inside the optical unit 100 has a reduced rigidity. Accordingly, the strip-like portion of the flexible wiring board 410 smoothly follows the swing of the movable body 3, so that a large load is not applied to the movable body 3.
- the flexible wiring board 410 extends between the movable body 3 and the lower cover 270 from the one side + Y in the Y-axis direction toward the other side ⁇ Y, Folded toward one side + Y, and then the end is fixed to the movable body 3.
- the flexible wiring substrate 410 has a long dimension because the folded portion 413 is provided between the outside and the portion fixed to the movable body 3. Accordingly, the belt-like portion of the flexible wiring board 410 smoothly follows the shake of the imaging unit 1, so that a large load is not applied to the movable body 3. Further, the folded portion 413 of the flexible wiring board 410 is at the same height position as the swing center of the movable body 3 at the swing support point 180.
- the displacement of the flexible wiring board 410 when the movable body 3 swings can be kept small. Accordingly, since the influence of the flexible wiring board 410 on the movable body 3 can be reduced, the movable body 3 can be rocked with high accuracy.
- the movable body 3 is supported by the swing fulcrum 180 of the fixed body 200 so as to be swingable. If 500 is operated, the movable body 3 can be swung around the swing fulcrum 180. Therefore, even when the optical unit 100 is shaken due to camera shake or the like, the shake can be corrected by swinging the movable body 3.
- the reflective smooth layer 590 (the first smooth layer 590 a and the second smooth layer 590 a and the second photo reflector 580 b) is disposed in a region facing the photo reflector 580 (the first photo reflector 580 a and the second photo reflector 580 b). Since the smooth layer 590b) is laminated, the photo reflector 580 always faces the smooth layer 590 even if the movable body 3 swings. For this reason, even if there is a scratch or the like in a region facing the photo reflector 580, such a scratch is covered with the reflective smooth layer 590, so that appropriate reflected light always returns to the photo reflector 580. come.
- the photo reflector 580 is provided by utilizing the gap between the side surface of the movable body 3 and the side surface of the fixed body 200, an appropriate amount between the output from the photo reflector 580 and the swing angle of the movable body 3 can be obtained. Correlation can be obtained, and swinging of the movable body 3 can be monitored with high accuracy. Therefore, the swing of the movable body 3 can be accurately controlled.
- the smooth layer 590 is laminated on the flat side surface (plane) of the movable body 3, the smooth layer 590 is laminated flat only by laminating the smooth layer 590 on the surface of the magnet 520.
- the shake correction drive mechanism 500 is preferably separated from the swing support point 180 in the optical axis direction.
- the photo reflector 580 is From the viewpoint of linearity between the distance and the output, it is preferable to perform detection under a condition that the displacement amount is small to some extent.
- the photo reflector 580 since the photo reflector 580 is provided between the shake correction drive mechanism 500 and the swing support point 180 provided at positions separated in the optical axis direction, the shake correction drive mechanism 500 is moved to the swing support point 180.
- the photo reflector 580 can be provided at a position where the displacement of the movable body 3 is relatively small. Therefore, according to this embodiment, even when the size of the optical unit 100 is small, both the shake correction drive mechanism 500 and the photo reflector 580 can be properly arranged.
- the shake correction drive mechanism 500 and the photo reflector 580 may face each other. Absent. Therefore, even if the photoreflector 580 is thicker than the sheet-like coil body 550 and jumps out from the sheet-like coil body 550 to the inner peripheral side, the portion facing the photoreflector 580 is not the shake-correcting drive mechanism 500. It is not necessary to widen the gap of the apparatus, and the enlargement of the apparatus can be prevented.
- FIG. 22 is an explanatory view showing the arrangement position and the like of the photo reflector 580 in the optical unit 100 with a shake correction function according to another embodiment of the present invention
- (D) are each an explanatory view showing a planar configuration of the optical unit 100, an explanatory view schematically showing a YZ section, an explanatory view schematically showing an XZ section, and a state in which the movable body 3 is swung.
- FIG. FIG. 22 is a diagram corresponding to FIG. 2, and illustration of the shake correction drive mechanism is omitted.
- the basic configuration is the same as that of the above-described embodiment, common portions are denoted by the same reference numerals and description thereof is omitted.
- the photo reflector 580 is provided on the fixed body 200 side.
- the photo reflector 580 may be provided on the movable body 3 side.
- the smooth layer 590 is provided on the fixed body 200 side.
- optical unit 100 Another configuration example of the optical unit 100
- the example in which the present invention is applied to the optical unit 100 used in the camera-equipped mobile phone has been described.
- the present invention may be applied to the optical unit 100 used in a thin digital camera or the like.
- the example in which the lens driving mechanism is configured in the imaging unit 1 has been described.
- the present invention is applied to a fixed focus type optical unit in which the lens driving mechanism is not mounted in the imaging unit 1. Also good.
- the optical unit 100 with a shake correction function to which the present invention is applied is fixed in a device having vibrations at regular intervals, such as a refrigerator or the like, in addition to a mobile phone, a digital camera, etc. It can also be used for a service that can obtain information inside the refrigerator when going out, for example, when shopping. In such a service, since it is a camera system with a posture stabilization device, a stable image can be transmitted even if the refrigerator vibrates. Further, the present apparatus may be fixed to a device worn at the time of attending school, such as a student's bag, a student's bag, a school bag, or a hat.
- the guardian or the like can observe the image in a remote place to ensure the safety of the child.
- a clear image can be taken even if there is vibration during movement without being aware of the camera.
- a GPS is installed in addition to the camera module, the location of the target person can be acquired at the same time. In the event of an accident, the location and situation can be confirmed instantly.
- the optical unit 100 with a shake correction function to which the present invention is applied is mounted at a position where the front can be photographed in an automobile, it can be used as a drive recorder.
- the optical unit 100 with a shake correction function to which the present invention is applied is mounted at a position where the front of the vehicle can be photographed, and peripheral images are automatically photographed at regular intervals and automatically transferred to a predetermined server. Also good. Further, by distributing this image in conjunction with traffic jam information such as a car navigation road traffic information communication system, the traffic jam status can be provided in more detail. According to such a service, it is possible to record the situation at the time of an accident or the like by an unintentional third party and use it for inspection of the situation as in the case of a drive recorder mounted on a car. In addition, a clear image can be acquired without being affected by the vibration of the automobile. In such an application, when the power is turned on, a command signal is output to the control unit, and shake control is started based on the command signal.
- the optical unit 100 with a shake correction function to which the present invention is applied may be applied to shake correction of an optical device that emits light, such as a laser pointer, a portable or vehicle-mounted projection display device, or a direct-view display device. Good. Further, it may be used for observation without using an auxiliary fixing device such as a tripod for observation at a high magnification such as an astronomical telescope system or a binoculars system. In addition, by using a sniper rifle or a gun barrel such as a tank, the posture can be stabilized against vibration at the time of triggering, so that the accuracy of hitting can be improved.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Adjustment Of Camera Lenses (AREA)
- Studio Devices (AREA)
- Accessories Of Cameras (AREA)
Abstract
Description
31 可動体の第1側面
32 可動体の第2側面
100 光学ユニット
180 揺動支点
200 固定体
201 固定体の第1側面
202 固定体の第2側面
520 磁石
560 空芯コイル
560s コイル部
580 フォトリフレクタ
580a 第1フォトリフレクタ
580b 第2フォトリフレクタ
590 平滑層
590a 第1平滑層
590b 第2平滑層
600 バネ部材
(撮影用の光学ユニットの全体構成)
図1は、本発明を適用した振れ補正機能付きの光学ユニットを携帯電話機等の光学機器に搭載した様子を模式的に示す説明図である。図2は、本発明を適用した振れ補正機能付きの光学ユニットにおけるフォトリフレクタの配置位置等を示す説明図であり、図2(a)、(b)、(c)、(d)は各々、光学ユニットの平面的構成を示す説明図、YZ断面を模式的に示す説明図、XZ断面を模式的に示す説明図、および可動体が揺動した様子を模式的に示す説明図である。なお、図1および図2では、振れ補正用駆動機構の図示を省略してある。
図3は、本発明の実施の形態1に係る振れ補正機能付きの光学ユニットの外観等を示す斜視図であり、図3(a)、(b)は、光学ユニットを被写体側からみたときの斜視図、および光学ユニットから撮影ユニットを取り外した状態の斜視図である。図4は、本発明の実施の形態1に係る振れ補正機能付きの光学ユニット100の全体構成を示す分解斜視図である。なお、図4では、可動体3については撮像ユニット1の図示を省略し、ケース110のみを図示してある。
図5は、本発明の実施の形態1に係る振れ補正機能付きの光学ユニット100に用いたコイルホルダおよびコイルの説明図である。図6は、本発明の実施の形態1に係る振れ補正機能付きの光学ユニット100におけるフレキシブル配線基板490の説明図である。
図7は、本発明の実施の形態1に係る振れ補正機能付きの光学ユニット100に用いた可動体3の分解斜視図である。なお、図7では、撮像ユニット1の図示を省略してある。
図8は、本発明の実施の形態1に係る振れ補正機能付きの光学ユニット100のYZ断面の構成を示す説明図であり、図8(a)、(b)は、揺動支点180を通る位置で光学ユニット100を切断したときのYZ断面図、およびその一部を拡大して示す断面図である。図9は、本発明の実施の形態1に係る振れ補正機能付きの光学ユニット100のZX断面の構成を示す説明図であり、図9(a)、(b)は、揺動支点180を通る位置で光学ユニット100を切断したときのZX断面図、およびその一部を拡大して示す断面図である。なお、図8および図9では、可動体3については撮像ユニット1および上ケース130の図示を省略し、筒状ケース120のみを図示してある。また、バネ部材600は負荷が加わっていない状態では、平面状であるが、固定体200に可動体3を組み込むと、可動体3は、揺動支点180で光軸方向前側に押し出される。その結果、バネ部材600が変形するが、かかる変形したバネ部材600の形状については模式的に示してある。
図7に示すように、光学ユニット100は、可動体3に接続されたフレキシブル配線基板410を備えており、フレキシブル配線基板410において、可動体3の筒状ケース120内に位置する部分に、図3に示す撮像ユニット1に接続されている。ここで、可動体3を揺動させた際にフレキシブル配線基板410が可動体3に負荷を印加すると、可動体3を適正に揺動させるのに支障がある。そこで、フレキシブル配線基板410は、可動体3に接続されているY軸方向の一方側+Yの部分412から他方側-Yに向けて延在した後、一方側+Yに向けて折り返されて外部に引き出されている。このため、フレキシブル配線基板410は、可動体3に接続されている部分から外部に引き出されている部分までの間に折り返し部分413が設けられている分、寸法が長い。従って、フレキシブル配線基板410は、可動体3の振れにスムーズに追従するので、大きな負荷を可動体3に印加することがない。
図10は、本発明の実施の形態1に係る振れ補正機能付きの光学ユニット100のXY断面図である。なお、図10では、可動体3については撮像ユニット1および上ケース130等の図示を省略し、筒状ケース120のみを図示してある。また、図10では、フォトリフレクタ580の背面側に位置する剛性基板やスペーサーや、フレキシブル配線基板490の図示を省略してある。
図7~図10等を参照して説明したように、本形態の光学ユニット100では、振れ補正用駆動機構500を構成するにあたって、固定体200のコイルホルダ260の4つの側面264の各々に空芯コイル560(第1空芯コイル560a、第2空芯コイル560b、第3空芯コイル560cおよび第4空芯コイル560d)が設けられている。また、可動体3(筒状ケース120)の4つの側面126(側面126a、126b、126c、126d)の各々に磁石520(第1磁石520a、第2磁石520b、第3磁石520cおよび第4磁石520d)が設けられている。
図11は、本発明の実施の形態1に係る振れ補正機能付きの光学ユニット100に用いた平滑層590の説明図であり、図11(a)、(b)、(c)、(d)は、磁石520の表面に平滑層590を積層した様子を示す説明図、平滑層590の表面粗さを測定した結果を示す説明図、磁石520の表面の様子を示す説明図、磁石520の表面粗さを測定した結果を示す説明図である。図12は、本発明の実施の形態1に係る振れ補正機能付きの光学ユニット100に用いた平滑層590の反射特性の均一性を示す説明図であり、図12(a)、(b)は、平滑層590の反射特性の均一性を測定する方法を示す説明図、および平滑層590の反射特性の均一性の測定結果を示す説明図である。図13は、本発明の実施の形態1に係る振れ補正機能付きの光学ユニット100において、可動体3を揺動させた際のフォトリフレクタ580からの出力を示す説明図であり、図13(a)、(b)は、可動体3を軸線X0周りに揺動させた際のフォトリフレクタ580からの出力を示す説明図、および可動体3を軸線Y0周りに揺動させた際のフォトリフレクタ580からの出力を示す説明図である。
図14は、本発明の実施の形態1に係る振れ補正機能付きの光学ユニット100に設けたフォトリフレクタ580の固定体200(コイルホルダ260)への固定構造を示す説明図であり、図14(a)、(b)、(c)は、コイルホルダ260に第1フォトリフレクタ580aを搭載した様子をコイルホルダ260の内側からみた様子を示す説明図、第2フォトリフレクタ580bを実装したフレキシブル配線基板490の帯状部分460を内側からみた様子を示す説明図、およびフレキシブル配線基板490の帯状部分460から空芯コイル560を外した状態を内側からみた様子を示す説明図である。図15は、本発明の実施の形態1に係る振れ補正機能付きの光学ユニット100に設けたスペーサー等の説明図であり、図15(a)、(b)はいずれも、第1フォトリフレクタ580aおよび第2フォトリフレクタ580bにスペーサーを設ける様子を示す説明図である。図16は、フォトリフレクタ580と反射面(平滑面590)との距離と、フォトリフレクタ580からの出力電流値との関係を示す説明図である。
以上説明したように、本形態の光学ユニット100(振れ補正機能付き光学ユニット)では、振れ補正用駆動機構500を作動させれば、揺動支点180を中心に可動体3を揺動させることができる。従って、手振れ等に起因して光学ユニット100に振れが生じた場合でも、可動体3を揺動させることによって、振れを補正することができる。また、本形態では、光軸方向に交差する2つの方向において、第1空芯コイル560aの内側領域に第1フォトリフレクタ580aが設けられ、第2空芯コイル560bの内側領域に第2フォトリフレクタ580bが設けられている。このため、2つの方向毎の可動体3の変位を監視し、その監視結果に基づいて、振れ補正用駆動機構500を制御することができる。
図17は、本発明の実施の形態1の改良例に係る振れ補正機能付きの光学ユニット100における変位量検出方法を示す説明図であり、図17(a)、(b)は、振れ補正機能付きの光学ユニット100のXY断面図、および差動検出回路の説明図である。
(光学ユニットの全体構成)
図18は、本発明の実施の形態2に係る振れ補正機能付きの光学ユニットの全体構成を示す説明図であり、図18(a)、(b)は、光学ユニットを被写体側(光軸方向前側)からみたときの斜視図、およびその分解斜視図である。図19は、本発明の実施の形態2に係る振れ補正機能付きの光学ユニット100の要部の分解斜視図であり、図19(a)、(b)は、X軸方向およびY軸方向において互いに逆方向からみた分解斜視図である。なお、本形態の基本的な構成は実施の形態1と同様であるため、共通する部分には同一の符号を付してそれらの説明を省略する。
図20は、本発明の実施の形態2に係る振れ補正機能付きの光学ユニット100の可動体3の分解斜視図である。図18、図19および図20に示すように、可動体3は、撮像ユニット1と、撮像ユニット1の筒状ケース120の外周面を囲む矩形枠状のホルダ7と、ストッパ部材8とを備えており、ストッパ部材8はホルダ7の光軸方向後側の面に溶接等の方法で固定されている。ホルダ7は、光軸方向前側に位置する矩形枠状の第1ホルダ部材71と、光軸方向後側で第1ホルダ部材71に対向する矩形枠状の第2ホルダ部材72とからなる。本形態において、第1ホルダ部材71と第2ホルダ部材72との間には、振れ補正用駆動機構500に用いた平板状の磁石520が保持されている。より具体的には、磁石520において光軸方向前側の面には第1ホルダ部材71が固定され、磁石520において光軸方向後側の面には第2ホルダ部材72が固定されており、磁石520、第1ホルダ部材71および第2ホルダ部材72によって角筒状の磁石アセンブリ75が構成されている。このため、角筒状の磁石アセンブリ75の内側に撮像ユニット1を挿入した後、撮像ユニット1の筒状ケース120の外周面と、磁石アセンブリ75の内周面(磁石520の内面)とを接着剤73(図21(b)、(c)参照)等により固定すれば、磁石520、第1ホルダ部材71、第2ホルダ部材72、ストッパ部材8および撮像ユニット1を一体化して可動体3を構成することができる。
バネ部材600は、固定体200側に連結される矩形枠状の固定体側連結部620と、可動体3側に連結される可動体側連結部610と、可動体側連結部610と固定体側連結部620の間で延在する複数本のアーム部630とを備えた板状バネ部材であり、アーム部630の両端は各々、可動体側連結部610および固定体側連結部620に繋がっている。ここで、固定体側連結部620は、矩形枠状の本体部分621と、本体部分621の辺部分の中央位置で外側に向けて突出した凸部622とを備えている。
図21は、本発明の実施の形態2に係る振れ補正機能付きの光学ユニット100の断面図であり、図21(a)、(b)、(c)は、フォトリフレクタ580を通る位置で光学ユニットを切断したときのXY断面図、YZ断面図およびXZ断面図である。なお、図21では、撮像ユニットの内部についてはレンズホルダ等の図示を省略してある。
図19に示すように、矩形に折り曲げられたシート状コイル体550の外側には、フレキシブル配線基板450が重ねて配置されている。フレキシブル配線基板450は、シート状コイル体550のX軸方向の一方側+Xの面556およびY軸方向の一方側+Yの面557に外側で重なるように直角に折り曲げられた第1部分451と第2部分452を備えており、第2部分452の光軸方向後側端部で折れ曲がった端部453は、外部でフレキシブル配線基板400に接続されている。
ここで、可動体3の第1側面31において第1フォトリフレクタ580aと対向する領域には、反射性の第1平滑層590aが積層され、可動体3の第2側面32において第2フォトリフレクタ580bと対向する領域には、反射性の第2平滑層590bが積層されている。かかる平滑層590(第1平滑層590aおよび第2平滑層590b)は各々、樹脂テープ、金属シート、コーティング層、板状ガラス、あるいは反射板からなる。より具体的には、平滑層590は、可動体3に粘着材等によって貼付された樹脂テープ、金属シート、板状ガラス、反射板や、可動体3に塗布後、硬化させたコーティング層からなる。
本形態の光学ユニット100において、可動体3は、揺動支点180によって揺動可能な状態に固定体200に支持された状態にある。従って、外部から大きな力が加わって可動体3が大きく変位すると、バネ部材600のアーム部630が塑性変形するおそれがある。そこで、本形態では、以下に説明するストッパ機構が設けられている。
本形態の光学ユニット100において、図1に示す光学機器1000が振れると、かかる振れはジャイロスコープによって検出されるとともに、上位の制御部では、ジャイロスコープでの検出に基づいて、振れ補正用駆動機構500を制御する。すなわち、ジャイロスコープで検出した振れを打ち消すような駆動電流をフレキシブル配線基板400およびフレキシブル配線基板450を介してシート状コイル体550のコイル部560sに供給する。その結果、X側振れ補正用駆動機構500xは、揺動支点180を中心に撮像ユニット1を軸線Y0周りに揺動させる。また、Y側振れ補正用駆動機構500yは、揺動支点180を中心に撮像ユニット1を軸線X0周りに揺動させる。また、撮像ユニット1の軸線X0周りの揺動、および軸線Y0周りの揺動を合成すれば、XY面全体に対して撮像ユニット1を変位させることができる。それ故、光学ユニット100で想定される全ての振れを確実に補正することができる。
図18等に示すように、本形態の光学ユニット100において、可動体3の撮像ユニット1には、フレキシブル配線基板410の一方の端部が接続されており、可動体3を揺動させた際にフレキシブル配線基板410が可動体3に負荷を印加すると、可動体3を適正に揺動させるのに支障がある。
以上説明したように、本形態の光学ユニット100(振れ補正機能付き光学ユニット)では、可動体3が固定体200の揺動支点180によって揺動可能に支持されているため、振れ補正用駆動機構500を作動させれば、揺動支点180を中心に可動体3を揺動させることができる。従って、手振れ等に起因して光学ユニット100に振れが生じた場合でも、可動体3を揺動させることによって、振れを補正することができる。
図22は、本発明の他の実施の形態に係る振れ補正機能付きの光学ユニット100におけるフォトリフレクタ580の配置位置等を示す説明図であり、図22(a)、(b)、(c)、(d)は各々、光学ユニット100の平面的構成を示す説明図、YZ断面を模式的に示す説明図、XZ断面を模式的に示す説明図、および可動体3が揺動した様子を模式的に示す説明図である。なお、図22は、図2に対応する図であり、振れ補正用駆動機構の図示を省略してある。また、上記実施の形態と基本的な構成が同一であるため、共通する部分には同一の符号を付してそれらの説明を省略する。
上記実施の形態では、カメラ付き携帯電話機に用いる光学ユニット100に本発明を適用した例を説明したが、薄型のデジタルカメラ等に用いる光学ユニット100に本発明を適用してもよい。また、上記形態では、撮像ユニット1にレンズ駆動機構等が構成されている例を説明したが、撮像ユニット1にレンズ駆動機構が搭載されていない固定焦点タイプの光学ユニットに本発明を適用してもよい。
Claims (8)
- 固定体と、
光学素子を保持する可動体と、
当該可動体を光軸方向に交差する第1方向に揺動させるとともに、前記光軸方向および前記第1方向に交差する第2方向に揺動させる振れ補正用駆動機構と、
を有する振れ補正機能付き光学ユニットにおいて、
前記第1方向で対向する前記固定体の第1側面および前記可動体の第1側面のうちの一方の第1側面で他方の第1側面に向く第1フォトリフレクタと、
前記他方の第1側面で前記第1フォトリフレクタに対向する領域に積層された反射性の第1平滑層と、
前記第2方向で対向する前記固定体の第2側面および前記可動体の第2側面のうちの一方の第2側面で他方の第2側面に向く第2フォトリフレクタと、
前記他方の第2側面で前記第2フォトリフレクタに対向する領域に積層された反射性の第2平滑層と、
を有することを特徴とする振れ補正機能付き光学ユニット。 - 前記第1平滑層および前記第2平滑層は各々、樹脂テープ、金属シート、コーティング層、板状ガラス、および反射板のうちの何れかであることを特徴とする請求項1に記載の振れ補正機能付き光学ユニット。
- 前記第1平滑層および前記第2平滑層は各々、平面上に積層されていることを特徴とする請求項1または2に記載の振れ補正機能付き光学ユニット。
- 前記第1フォトリフレクタおよび前記第2フォトリフレクタは、前記固定体の側に設けられ、
前記第1平滑層および前記第2平滑層は、前記可動体の側に設けられていることを特徴とする請求項1乃至3の何れか一項に記載の振れ補正機能付き光学ユニット。 - 前記振れ補正用駆動機構は、前記固定体の第1側面に設けられた第1空芯コイルと、前記可動体の第1側面に設けられた第1磁石と、前記固定体の第2側面に設けられた第2空芯コイルと、前記可動体の第2側面に設けられた第2磁石と、を備え、
前記第1フォトリフレクタは、前記第1空芯コイルの内側領域に設けられ、
前記第2フォトリフレクタは、前記第2空芯コイルの内側領域に設けられ、
前記第1平滑層は、前記第1磁石において前記第1空芯コイルが位置する側の面に積層され、
前記第2平滑層は、前記第2磁石において前記第2空芯コイルが位置する側の面に積層されていることを特徴とする請求項1乃至4の何れか一項に記載の振れ補正機能付き光学ユニット。 - 前記第1フォトリフレクタは、前記第1空芯コイルの内側領域で、前記第1空芯コイルの背面より前記第1磁石が位置する側にずれた位置に設けられ、
前記第2フォトリフレクタは、前記第2空芯コイルの内側領域で、前記第2空芯コイルの背面より前記第2磁石が位置する側にずれた位置に設けられることを特徴とする請求項5に記載の振れ補正機能付き光学ユニット。 - 前記振れ補正用駆動機構は、前記固定体の第1側面に設けられた第1コイルと、前記可動体の第1側面に設けられた第1磁石と、前記固定体の第2側面に設けられた第2コイルと、前記可動体の第2側面に設けられた第2磁石と、を備え、
前記第1フォトリフレクタ、前記第1平滑層、前記第2フォトリフレクタ、および前記第2平滑層は各々、前記第1コイル、前記第1磁石、前記第2コイル、および前記第2磁石より光軸方向において前記可動体の揺動中心が位置する側に設けられていることを特徴とする請求項1乃至4の何れか一項に記載の振れ補正機能付き光学ユニット。 - 可動体の光軸方向後側端部を支持して当該可動体を前記第1方向および前記第2方向に揺動可能に支持する揺動支点を有していることを特徴とする請求項1乃至7の何れか一項に記載の振れ補正機能付き光学ユニット。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/111,452 US9041816B2 (en) | 2011-04-11 | 2012-03-29 | Optical unit with shake correcting function |
CN201280017688.3A CN103460126B (zh) | 2011-04-11 | 2012-03-29 | 带抖动修正功能的光学单元 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011-087613 | 2011-04-11 | ||
JP2011087613A JP5828660B2 (ja) | 2011-04-11 | 2011-04-11 | 振れ補正機能付き光学ユニット |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012141011A1 true WO2012141011A1 (ja) | 2012-10-18 |
Family
ID=47009191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/058299 WO2012141011A1 (ja) | 2011-04-11 | 2012-03-29 | 振れ補正機能付き光学ユニット |
Country Status (4)
Country | Link |
---|---|
US (1) | US9041816B2 (ja) |
JP (1) | JP5828660B2 (ja) |
CN (1) | CN103460126B (ja) |
WO (1) | WO2012141011A1 (ja) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014083894A1 (ja) * | 2012-11-29 | 2014-06-05 | 日本電産サンキョー株式会社 | 撮影用光学装置 |
JP6402353B2 (ja) * | 2013-03-29 | 2018-10-10 | パナソニックIpマネジメント株式会社 | 冷蔵庫及び冷蔵庫システム |
EP2899579B1 (en) | 2014-01-28 | 2017-08-16 | LG Innotek Co., Ltd. | Lens moving unit and camera module having the same |
KR101668605B1 (ko) * | 2014-03-21 | 2016-10-25 | 주식회사 하이소닉 | 휴대단말기용 카메라 액추에이터 |
KR20160136710A (ko) * | 2015-05-20 | 2016-11-30 | 삼성전기주식회사 | 카메라 모듈 |
JP6807663B2 (ja) * | 2015-07-02 | 2021-01-06 | 日本電産サンキョー株式会社 | 振れ補正機能付き光学ユニット |
KR102046472B1 (ko) | 2017-02-15 | 2019-11-19 | 삼성전기주식회사 | 손떨림 보정 반사모듈 및 이를 포함하는 카메라 모듈 |
JP7007215B2 (ja) * | 2018-02-27 | 2022-01-24 | 日本電産サンキョー株式会社 | 振れ補正機構付きレーザポインタ |
JP7046653B2 (ja) * | 2018-03-06 | 2022-04-04 | 日本電産サンキョー株式会社 | 振れ補正機能付き光学ユニット |
KR102007207B1 (ko) | 2018-12-27 | 2019-08-05 | (주)센서토피아 | 카메라 모듈의 위치 보정용 기판 어셈블리, 이의 제조방법 및 이를 포함하는 카메라 모듈 |
CN111538165B (zh) * | 2019-02-07 | 2022-03-22 | 日本电产三协株式会社 | 带抖动修正功能的光学单元及带抖动修正功能的光学单元的制造方法 |
CN112040094B (zh) * | 2019-06-04 | 2023-05-09 | Oppo广东移动通信有限公司 | 一种拍摄装置 |
JP2022056747A (ja) * | 2020-09-30 | 2022-04-11 | 日本電産サンキョー株式会社 | 光学ユニット |
JP2022057347A (ja) * | 2020-09-30 | 2022-04-11 | 日本電産株式会社 | 光学ユニット |
KR102414828B1 (ko) * | 2020-11-23 | 2022-06-30 | 삼성전기주식회사 | 카메라 모듈 |
JP2022136419A (ja) * | 2021-03-08 | 2022-09-21 | 日本電産サンキョー株式会社 | 振れ補正機能付き光学ユニット |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08304922A (ja) * | 1995-05-11 | 1996-11-22 | Asahi Optical Co Ltd | 電子現像型撮像装置 |
JP2007041418A (ja) * | 2005-08-04 | 2007-02-15 | Konica Minolta Opto Inc | 回転支持機構及びこれを用いた撮像装置 |
JP2009192899A (ja) * | 2008-02-15 | 2009-08-27 | Canon Inc | レンズ鏡筒及びそれを有する光学機器 |
JP2010122662A (ja) * | 2008-10-20 | 2010-06-03 | Nidec Sankyo Corp | 振れ補正機能付き光学ユニット、および振れ補正機能付き光学ユニットにおける振れ補正制御方法 |
JP2010249934A (ja) * | 2009-04-13 | 2010-11-04 | Canon Inc | 像振れ補正装置 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4706105B2 (ja) | 2001-01-09 | 2011-06-22 | 株式会社ニコン | 撮影装置 |
JP4265417B2 (ja) * | 2004-01-22 | 2009-05-20 | パナソニック電工株式会社 | カメラ駆動装置 |
US7782533B2 (en) * | 2006-02-10 | 2010-08-24 | Panasonic Corporation | Image stabilizing apparatus |
JP2007310084A (ja) * | 2006-05-17 | 2007-11-29 | Alps Electric Co Ltd | 可動光学装置 |
WO2008012868A1 (fr) * | 2006-07-25 | 2008-01-31 | Tamron Co., Ltd. | dispositif de correction d'images et dispositif de formation d'images le comportant |
JP4752770B2 (ja) * | 2007-01-18 | 2011-08-17 | パナソニック株式会社 | 光ピックアップ |
JP2008252675A (ja) * | 2007-03-30 | 2008-10-16 | Nikon Corp | デジタルカメラ |
JP2008288682A (ja) * | 2007-05-15 | 2008-11-27 | Nikon Corp | 載置台 |
WO2009133690A1 (ja) * | 2008-04-30 | 2009-11-05 | 日本電産サンキョー株式会社 | 振れ補正機能付き光学ユニット及び撮影用光学装置 |
JP5096496B2 (ja) * | 2008-07-24 | 2012-12-12 | パナソニック株式会社 | カメラ駆動装置 |
KR101361783B1 (ko) * | 2008-10-15 | 2014-02-11 | 삼성테크윈 주식회사 | 렌즈 구동 유닛 및 이를 구비하는 카메라 모듈 |
JP5846346B2 (ja) | 2009-08-21 | 2016-01-20 | ミツミ電機株式会社 | カメラの手振れ補正装置 |
JP5771373B2 (ja) * | 2010-08-06 | 2015-08-26 | 日本電産サンキョー株式会社 | 振れ補正機能付き光学ユニット |
JP5689630B2 (ja) * | 2010-09-01 | 2015-03-25 | 日本電産サンキョー株式会社 | 撮影用光学装置および撮影用光学システム |
JP5762087B2 (ja) * | 2011-03-31 | 2015-08-12 | 日本電産サンキョー株式会社 | 振れ補正機能付き光学ユニット |
-
2011
- 2011-04-11 JP JP2011087613A patent/JP5828660B2/ja not_active Expired - Fee Related
-
2012
- 2012-03-29 CN CN201280017688.3A patent/CN103460126B/zh not_active Expired - Fee Related
- 2012-03-29 US US14/111,452 patent/US9041816B2/en active Active
- 2012-03-29 WO PCT/JP2012/058299 patent/WO2012141011A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08304922A (ja) * | 1995-05-11 | 1996-11-22 | Asahi Optical Co Ltd | 電子現像型撮像装置 |
JP2007041418A (ja) * | 2005-08-04 | 2007-02-15 | Konica Minolta Opto Inc | 回転支持機構及びこれを用いた撮像装置 |
JP2009192899A (ja) * | 2008-02-15 | 2009-08-27 | Canon Inc | レンズ鏡筒及びそれを有する光学機器 |
JP2010122662A (ja) * | 2008-10-20 | 2010-06-03 | Nidec Sankyo Corp | 振れ補正機能付き光学ユニット、および振れ補正機能付き光学ユニットにおける振れ補正制御方法 |
JP2010249934A (ja) * | 2009-04-13 | 2010-11-04 | Canon Inc | 像振れ補正装置 |
Also Published As
Publication number | Publication date |
---|---|
US9041816B2 (en) | 2015-05-26 |
CN103460126A (zh) | 2013-12-18 |
CN103460126B (zh) | 2016-02-17 |
US20140028863A1 (en) | 2014-01-30 |
JP2012220785A (ja) | 2012-11-12 |
JP5828660B2 (ja) | 2015-12-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5828660B2 (ja) | 振れ補正機能付き光学ユニット | |
JP5622443B2 (ja) | 振れ補正機能付き光学ユニット | |
JP5771373B2 (ja) | 振れ補正機能付き光学ユニット | |
JP5848052B2 (ja) | 振れ補正機能付き光学ユニット | |
JP5755414B2 (ja) | 振れ補正機能付き光学ユニット | |
JP5762087B2 (ja) | 振れ補正機能付き光学ユニット | |
JP5893363B2 (ja) | 振れ補正機能付き光学ユニット | |
JP2011257556A5 (ja) | ||
JP5828686B2 (ja) | 振れ補正機能付き光学ユニット | |
JP5612390B2 (ja) | 光学ユニット | |
JP5698939B2 (ja) | 振れ補正機能付き光学ユニット | |
JP5755476B2 (ja) | 振れ補正機能付き光学ユニット | |
JP5519390B2 (ja) | 振れ補正機能付き光学ユニット | |
JP2014235383A (ja) | 光学ユニット | |
JP2014186131A (ja) | 撮影用光学装置 | |
JP6173695B2 (ja) | 光学ユニット | |
JP5604237B2 (ja) | 振れ補正機能付き光学ユニット | |
JP5752978B2 (ja) | 振れ補正機能付き光学ユニット |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201280017688.3 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12771014 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14111452 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 12771014 Country of ref document: EP Kind code of ref document: A1 |