WO2010103698A1 - 羽根駆動装置及び光学機器 - Google Patents
羽根駆動装置及び光学機器 Download PDFInfo
- Publication number
- WO2010103698A1 WO2010103698A1 PCT/JP2009/070212 JP2009070212W WO2010103698A1 WO 2010103698 A1 WO2010103698 A1 WO 2010103698A1 JP 2009070212 W JP2009070212 W JP 2009070212W WO 2010103698 A1 WO2010103698 A1 WO 2010103698A1
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- WO
- WIPO (PCT)
- Prior art keywords
- blade
- drive
- optical path
- path opening
- pin
- Prior art date
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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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/02—Diaphragms
-
- 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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/08—Shutters
-
- 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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/08—Shutters
- G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
- G03B9/12—Two relatively-adjustable aperture-defining members moving as a unit
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/869—Means to drive or to guide tool
- Y10T83/8789—With simple revolving motion only
Definitions
- the present invention relates to a blade driving device and an optical apparatus.
- a blade driving device used for optical equipment is known.
- Some blade driving devices include a plurality of blades that open and close an optical path opening formed in a substrate.
- the plurality of blades are driven by a plurality of drive sources that are independently driven (see Patent Document 1).
- arranging the plurality of drive sources as close as possible leads to miniaturization of the entire blade driving device.
- a plurality of drive sources are arranged apart from each other, it is necessary to separately provide a member for storing each drive source. If a plurality of drive sources can be arranged close to each other, a plurality of drive sources can be accommodated by a common member, leading to miniaturization and simplification of the structure.
- Each drive source has a transmission part that transmits power to the blades.
- a drive pin is formed in the transmission portion, and the drive pin engages with an engagement groove formed in the blade. The blades are driven by driving the drive pins.
- an object of the present invention is to provide a blade driving device and an optical apparatus that can arrange a plurality of driving sources close to each other.
- the object is to provide a substrate having an optical path opening, first and second blades capable of moving forward and backward in the optical path opening, first and second transmission parts for driving the first and second blades, and the first and second blades.
- First and second drive sources for driving the second transmission unit, respectively, wherein the first and second transmission units have first and second drive pins, respectively, and the first blade is the first blade.
- An engagement groove engaged with one of the first and second drive pins is provided, and is attached to the first and second transmission portions so as to be rotatable around the other of the first and second drive pins. This can be achieved by the blade driving device.
- the first blade is rotatably attached to the first and second transmission parts. Therefore, the distance between the engagement groove of the first blade and the first or second drive pin serving as the rotation center of the first blade is always constant. For this reason, the engagement groove
- the substrate has a guide pin that guides the movement of the second blade
- the first blade has an engagement groove engaged with the first drive pin
- the first drive pin is engaged with the first blade, and is rotatably fitted around the second drive pin. Therefore, the distance between the engagement groove of the first blade and the second drive pin is always constant. For this reason, the engagement groove
- it may be an optical device provided with the blade driving device.
- FIG. 1 is a perspective view of a blade driving device 1 according to an embodiment that is employed in an optical apparatus. It is a perspective view of blade drive device 1 which omitted an electromagnetic actuator. It is a perspective view of the blade drive device 1 in the first aperture state. It is a perspective view of the blade drive device 1 in the second aperture state. It is a perspective view of the blade drive device 1 which concerns on the modification in a 1st aperture state.
- FIG. 1 is a perspective view of a blade driving device according to the present embodiment employed in an optical apparatus.
- the blade driving device 1 functions as an aperture device that adjusts the amount of light to an image sensor (not shown) mounted on the optical device.
- the blade driving device 1 includes a substrate 10, blades 30a and 30b, and electromagnetic actuators 50a and 50b.
- FIG. 2 is a perspective view of the blade driving device 1 in which the electromagnetic actuators 50a and 50b are omitted.
- FIG. 2 shows drive pins 59a and 59b described later.
- the blade 30a corresponds to the first blade
- the blade 30b corresponds to the second blade.
- the electromagnetic actuator 50a corresponds to a first drive source
- the electromagnetic actuator 50b corresponds to a second drive source.
- An optical path opening 11 through which the amount of light from the subject passes is formed at the center of the substrate 10.
- the blades 30 a and 30 b adjust the amount of light passing through the optical path opening 11.
- the blades 30 a and 30 b can move forward and backward with respect to the optical path opening 11.
- the blades 30a and 30b are arranged on the front side of the substrate 10 in FIG.
- the electromagnetic actuators 50 a and 50 b are disposed on the back side of the substrate 10.
- a diaphragm aperture 31a is formed in the blade 30a.
- the aperture 31 a has a smaller diameter than the optical path opening 11. When the aperture opening 31a overlaps the optical path opening 11, the amount of light passing through the optical path opening 11 is reduced.
- a diaphragm opening 31b is formed in the blade 30b.
- the aperture 31b has a smaller diameter than the optical path aperture 11 and the aperture 31a.
- An ND filter 32b is attached to the blade 30b so as to close the aperture 31b.
- a state (first state) in which the blades 30a and 30b are retracted from the optical path opening 11 is referred to as a fully opened state. In the fully open state, the amount of light passing through the optical path opening 11 is maximized.
- 1 and 2 show the blade driving device 1 in a fully opened state.
- a state (second state) in which the blade 30a faces the optical path opening 11 and the blade 30b is retracted from the optical path opening 11 is referred to as a first aperture state.
- a state where the blade 30b faces the optical path opening 11 and the blade 30a is retracted from the optical path opening 11 (third state) is referred to as a second aperture state.
- the amount of light that passes through the optical path opening 11 in the second aperture state is less than the amount of light that passes in the first aperture state.
- the blade 30a is provided with a hole 37a.
- the substrate 10 is provided with pins 17a protruding in the optical axis direction.
- the pin 17a fits in the hole 37a with play.
- the hole 37a is formed larger than the pin 17a.
- the blade 30b is provided with a linear guide groove 37b.
- the substrate 10 is provided with guide pins 17b protruding in the optical axis direction.
- the guide groove 37b is engaged with the guide pin 17b.
- Electromagnetic actuators 50a and 50b drive the blades 30a and 30b.
- the electromagnetic actuator 50a drives the blade 30a.
- the electromagnetic actuator 50b drives both the blades 30a and 30b.
- the electromagnetic actuator 50a includes a rotor 51a, a stator 53a, a coil bobbin 54a, and a coil 55a.
- the rotor 51a is rotatably supported and is magnetized with different polarities in the circumferential direction.
- the transmission part 58a is made of synthetic resin, and is fixed to the lower surface side of the rotor 51a, and transmits the rotational power of the rotor 51a to the blade 30a.
- the coil bobbin 54a is made of synthetic resin, and the coil 55a is wound around it.
- the coil bobbin 54a is fitted to the leg portion of the stator 53a. The stator 53a is excited when the coil 55a is energized.
- the rotor 51a rotates within a predetermined range by a magnetic attractive force and a repulsive force generated between the stator 53a and the rotor 51a.
- the electromagnetic actuator 50b has the same configuration as that of the electromagnetic actuator 50a, and the same configuration is shown by replacing symbols a and b in FIG.
- the rotor 51a corresponds to a first rotor.
- the transmission unit 58a corresponds to a first transmission unit.
- the transmission portion 58a protrudes outward in the radial direction of the rotor 51a and engages with an engagement groove 39a formed in the blade 30a.
- the engagement groove 39a has a cam shape.
- the transmission part 58a rotates with the rotor 51a.
- a driving pin 59a corresponding to a first driving pin protruding in the optical axis direction is formed at the tip of the transmission portion 58a, and this driving pin 59a is engaged with the engaging groove 39a.
- the electromagnetic actuator 50b also includes a rotor 51b and a transmission portion 58b that transmits the rotational power of the rotor 51b to the blades 30a and 30b.
- the rotor 51b corresponds to a second rotor.
- the transmission unit 58b corresponds to a second transmission unit.
- a driving pin 59b corresponding to the second driving pin is formed in the transmission portion 58b.
- the drive pin 59b is fitted in common to the fitting holes provided in each of the blades 30a and 30b.
- the blades 30a and 30b are fitted so as to be rotatable around the drive pin 59b.
- the engagement groove 39a of the blade 30a is engaged with the drive pin 59a. Accordingly, the blade 30a is mounted on the transmission portions 58a and 58b so as to be rotatable around the drive pin 59b.
- the substrate 10 is formed with arc-shaped relief grooves (not shown) for escaping the movement of the drive pins 59a and 59b.
- the locus of swing of the drive pins 59a and 59b is indicated by a dotted line.
- the rotors 51a and 51b can be stopped at both end positions of the swing range. Specifically, a stopper (not shown) that defines the swing range is provided.
- the drive pin 59a swings within a predetermined range.
- the blade 30a swings with the drive pin 59b as a fulcrum.
- the drive pin 59b swings within a predetermined range. Since both the blades 30a and 30b are fitted to the drive pin 59b, both the blades 30a and 30b are moved by the swing of the drive pin 59b. Details will be described later.
- FIG. 3 is a perspective view of the blade driving device 1 in the first aperture state.
- the transition from the fully open state to the first aperture state is performed by driving only the electromagnetic actuator 50a.
- the rotor 51a rotates from the fully opened state shown in FIGS. 1 and 2
- the rotor 51a moves in the engagement groove 39a
- the blade 30a swings with the drive pin 59b as a fulcrum.
- the blade 30 a swings to a position facing the optical path opening 11.
- the blade 30a contacts the stopper pin 18 provided on the substrate 10.
- the position of the blade 30a in the first aperture state is defined.
- the blade 30b is in a stopped state during the transition from the fully open state to the first throttle state.
- FIG. 4 is a perspective view of the blade driving device 1 in the second aperture state.
- the transition from the first aperture state to the second aperture state is performed by driving only the electromagnetic actuator 50b.
- the rotor 51b rotates from the first aperture state shown in FIG. 3
- the blade 30a rotates around the drive pin 59b with the engagement groove 39a and the drive pin 59a engaged, and retracts from the optical path opening 11.
- the drive pin 59a moves so as to move near the center of the engagement groove 39a.
- the blade 30b rotates around the drive pin 59b and swings to a position facing the optical path opening 11 in a state where the guide groove 37b and the guide pin 17b provided on the substrate 10 are engaged. At this time, the swing of the blade 30b is guided so that the guide groove 37b moves relative to the guide pin 17b.
- the blade 30b contacts the pin 17a. Thereby, the position which the blade
- the vane 30a retracted from the optical path opening 11 comes into contact with the stopper pin 19 provided on the substrate 10. Thereby, the retracted position of the blade 30a is defined.
- the blade driving device 1 can shift from the fully open state to the first aperture state, and from the first aperture state to the second aperture state.
- the transition from the fully open state to the second aperture state is performed by driving both of the electromagnetic actuators 50a and 50b.
- the blade 30a is rotatably mounted on the transmission portions 58a and 58b. That is, the blade 30a has an engagement groove 39a that engages with the drive pin 59a, and is rotatably fitted around the drive pin 59b. Accordingly, the distance between the engagement groove 39a of the first blade and the drive pin 59b is always constant. For this reason, the engagement groove 39a of the blade 30a does not overlap the locus of the drive pin 59b. Therefore, even when the drive pins 59a and 59b are arranged close to each other, the drive pin 59b does not engage with the engagement groove 39a of the blade 30a. Therefore, the transmission parts 58a and 58b can be disposed close to each other, and thereby the electromagnetic actuators 50a and 50b can be disposed close to each other. Thereby, size reduction of the blade drive device 1 is achieved.
- the electromagnetic actuators 50a and 50b are arranged close to each other as described above, a member for storing both can be made common. Further, a printed circuit board (not shown) for ensuring power supply to the electromagnetic actuators 50a and 50b can be used in common. As described above, the electromagnetic actuators 50a and 50b are arranged close to each other, thereby reducing the size of the blade driving device 1.
- the transmission parts 58a and 58b are opposed to each other. Therefore, the blades 30a and 30b driven by the transmission portions 58a and 58b can be arranged so as to overlap most of them. Thereby, the movement space of the blades 30a and 30b can be reduced, and the blade drive device 1 can be downsized.
- both the blades 30a and 30b can be driven by driving only the electromagnetic actuator 50b. Therefore, compared with the case where the 1st and 2nd blade
- the rotors 51a and 51b can be stopped only at both end positions of the rotation range.
- the rotor employ adopts the actuator which can stop at three places of the both-ends position of the rotation range, and the middle position
- cost is suppressed.
- the cost is reduced by using two actuators that can be stopped only at both end positions of the rotation range rather than such an actuator.
- problems such as hunting may occur.
- the blades 30a and 30b are positioned on the same side with respect to the optical path opening 11 in a state of overlapping each other.
- wing 30a, 30b can be suppressed.
- FIG. 5 is a perspective view of the blade driving device 1 in the first aperture state in the modified example.
- the drive pin 59a formed in the transmission part 58a is fitted in the fitting hole provided in the blade
- the drive pin 59b formed on the transmission portion 58b is engaged with a cam-shaped engagement groove 39c formed on the blade 30c.
- the blade 30c is rotatable around the drive pin 59a. That is, the blade 30c is rotatably mounted on the transmission portions 58a and 58b.
- the transition from the fully open state to the first aperture state is performed by driving only the electromagnetic actuator 50a, and the transition from the first aperture state to the second aperture state is This is done by driving only the actuator 50b. (Not shown)
- the blade 30c is rotatably mounted on the transmission portions 58a and 58b.
- the blade 30c has an engagement groove 39c that engages with the drive pin 59b, and is rotatably fitted around the drive pin 59a. Therefore, the distance between the fitting hole of the blade 30c and the drive pin 59b is always constant. For this reason, the fitting hole of the blade 30c does not overlap on the locus of the drive pin 59b. Therefore, the transmission parts 58a and 58b can be disposed close to each other, and thereby the electromagnetic actuators 50a and 50b can be disposed close to each other. Thereby, size reduction of the blade drive device 1 is achieved.
- the first blade has an engagement groove that engages with either the first drive pin 59a or the second drive pin 59b, and the other of the first drive pin 59a and the second drive pin 59b. It is attached to the 1st transmission part 58a and the 2nd transmission part 58b so that rotation around is possible.
- the blade 30b may not be provided with the ND filter 32b.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Diaphragms For Cameras (AREA)
- Shutters For Cameras (AREA)
Abstract
Description
Claims (9)
- 光路開口を有した基板と、
前記光路開口に進退自在な第1及び第2羽根と、
前記第1及び第2羽根を駆動させる第1及び第2伝達部と、
前記第1及び第2伝達部をそれぞれ駆動させる第1及び第2駆動源と、を備え、
前記第1及び第2伝達部は、それぞれ第1及び第2駆動ピンを有し、
前記第1羽根は、前記第1及び第2駆動ピンのいずれか一方に係合した係合溝を有し、前記第1及び第2駆動ピンの他方の周りに回転可能に前記第1及び第2伝達部に取り付けられている、羽根駆動装置。 - 前記基板は、前記第2羽根の移動を案内する案内ピンを有し、
前記第1羽根は、前記第1駆動ピンに係合した係合溝を有し、前記第2駆動ピン周りに回転可能に嵌合し、
前記第2羽根は、前記案内ピンに係合した案内溝を有し、前記第2駆動ピン周りに回転可能に嵌合している、請求項1の羽根駆動装置。 - 前記第1及び第2伝達部は、互いに対向している、請求項1の羽根駆動装置。
- 前記第1駆動ピンの駆動によって前記第1羽根が駆動し、
前記第2駆動ピンの駆動によって前記第1及び第2羽根が駆動する、請求項1乃至3の何れかの羽根駆動装置。 - 前記第1及び第2駆動源は、それぞれ第1及び第2ロータを有し、
前記第1及び第2ロータは、回転範囲の両端位置でのみ停止可能である、請求項1乃至3の何れかの羽根駆動装置。 - 前記第1及び第2羽根は、前記光路開口から退避した状態においては、互いに重なって、前記光路開口に対して同一側に位置する、請求項1乃至3の何れかの羽根駆動装置。
- 前記第1及び第2羽根が前記光路開口から退避した第1状態、
前記第1羽根が前記光路開口に臨み前記第2羽根が前記光路開口から退避した第2状態、
前記第2羽根が前記光路開口に臨み前記第1羽根が前記光路開口から退避した第3状態、の何れかの状態に移行可能である、請求項1乃至3の何れかの羽根駆動装置。 - 前記第1及び第2羽根は、前記光路開口よりも径の小さい第1及び第2開口をそれぞれ有している、請求項1乃至3の何れかの羽根駆動装置。
- 請求項1の羽根駆動装置を備えた光学機器。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009801579502A CN102349023A (zh) | 2009-03-10 | 2009-12-02 | 叶片驱动装置与光学仪器 |
KR1020117017593A KR101189882B1 (ko) | 2009-03-10 | 2009-12-02 | 블레이드 구동 장치 및 광학 기기 |
US13/191,810 US8366331B2 (en) | 2009-03-10 | 2011-07-27 | Blade driving device and optical apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009057181A JP5025673B2 (ja) | 2009-03-10 | 2009-03-10 | 羽根駆動装置及び光学機器 |
JP2009-057181 | 2009-03-10 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US13/191,810 Continuation US8366331B2 (en) | 2009-03-10 | 2011-07-27 | Blade driving device and optical apparatus |
Publications (1)
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WO2010103698A1 true WO2010103698A1 (ja) | 2010-09-16 |
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PCT/JP2009/070212 WO2010103698A1 (ja) | 2009-03-10 | 2009-12-02 | 羽根駆動装置及び光学機器 |
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US (1) | US8366331B2 (ja) |
JP (1) | JP5025673B2 (ja) |
KR (1) | KR101189882B1 (ja) |
CN (1) | CN102349023A (ja) |
WO (1) | WO2010103698A1 (ja) |
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ITMI20130950A1 (it) * | 2013-06-10 | 2014-12-11 | Campagnolo Srl | Complesso di manubrio di bicicletta con comandi oleoidraulici integrati |
US10523850B2 (en) | 2015-12-30 | 2019-12-31 | Sintai Optical (Shenzhen) Co., Ltd. | Camera device with adjustable aperture |
TWI615652B (zh) * | 2015-12-30 | 2018-02-21 | 信泰光學(深圳)有限公司 | 光學鏡頭 |
KR102248522B1 (ko) * | 2019-06-18 | 2021-05-06 | 삼성전기주식회사 | 조리개 모듈 및 이를 포함하는 카메라 모듈 |
JP7367022B2 (ja) * | 2021-04-14 | 2023-10-23 | 北京小米移動軟件有限公司 | 絞り装置、絞り装置を備えるカメラモジュール、電子機器 |
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2009
- 2009-03-10 JP JP2009057181A patent/JP5025673B2/ja not_active Expired - Fee Related
- 2009-12-02 WO PCT/JP2009/070212 patent/WO2010103698A1/ja active Application Filing
- 2009-12-02 KR KR1020117017593A patent/KR101189882B1/ko not_active IP Right Cessation
- 2009-12-02 CN CN2009801579502A patent/CN102349023A/zh active Pending
-
2011
- 2011-07-27 US US13/191,810 patent/US8366331B2/en active Active
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JP2007093912A (ja) * | 2005-09-28 | 2007-04-12 | Nidec Copal Corp | カメラ用羽根駆動装置 |
JP2007322631A (ja) * | 2006-05-31 | 2007-12-13 | Nidec Copal Corp | カメラ用光量調整装置 |
JP2008176062A (ja) * | 2007-01-18 | 2008-07-31 | Sony Corp | 光量調整装置及び撮像装置 |
Also Published As
Publication number | Publication date |
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US8366331B2 (en) | 2013-02-05 |
CN102349023A (zh) | 2012-02-08 |
US20120024126A1 (en) | 2012-02-02 |
KR20110110245A (ko) | 2011-10-06 |
JP5025673B2 (ja) | 2012-09-12 |
KR101189882B1 (ko) | 2012-10-10 |
JP2010210955A (ja) | 2010-09-24 |
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