WO2012035831A1 - フォーカルプレーンシャッタ及び光学機器 - Google Patents
フォーカルプレーンシャッタ及び光学機器 Download PDFInfo
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- WO2012035831A1 WO2012035831A1 PCT/JP2011/062654 JP2011062654W WO2012035831A1 WO 2012035831 A1 WO2012035831 A1 WO 2012035831A1 JP 2011062654 W JP2011062654 W JP 2011062654W WO 2012035831 A1 WO2012035831 A1 WO 2012035831A1
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- Prior art keywords
- lever
- curtain
- opening
- rear curtain
- front curtain
- Prior art date
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- 230000003287 optical effect Effects 0.000 title claims description 7
- 239000000758 substrate Substances 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 78
- 229910052742 iron Inorganic materials 0.000 description 31
- 210000000078 claw Anatomy 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/08—Shutters
- G03B9/36—Sliding rigid plate
-
- 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
- G03B9/36—Sliding rigid plate
- G03B9/40—Double plate
- G03B9/42—Double plate with adjustable slot; with mechanism controlling relative movement of plates to form slot
Definitions
- the present invention relates to a focal plane shutter and an optical device.
- Patent Document 1 discloses a focal plane shutter provided with an actuator that can hold a lever for opening and closing the front curtain in a non-energized manner in addition to the front curtain electromagnet and the rear curtain electromagnet.
- the actuator disclosed in Patent Document 1 includes a stator, a coil, and a rotor. Therefore, the provision of such an actuator may increase the size of the focal plane shutter itself.
- an object of the present invention is to provide a focal plane shutter and an optical apparatus in which an increase in size is suppressed.
- the object is to provide an opening having a substrate, a front curtain and a rear curtain that can open and close the opening, a rear curtain lever that can drive the rear curtain, and a first curtain that is connected to the front curtain and can drive the front curtain.
- a second lever having an engaging portion that is arranged coaxially with the first lever and that abuts against the first lever so that the first curtain can be pressed so that the front curtain opens the opening;
- a self-holding solenoid capable of holding the first lever without energization so that the front curtain is in an open state; a front curtain electromagnet capable of holding the second lever and the rear curtain lever with energization;
- a rear curtain electromagnet, and a set lever that is set so that the second lever and the rear curtain lever come into contact with the front curtain electromagnet and the rear curtain electromagnet, respectively, and the front curtain and the rear curtain open the opening.
- the second lever and rear curtain A first mode in which the first curtain is set and a second mode in which the second lever and the rear curtain lever are set in a state where the front curtain closes the opening and the rear curtain opens the opening. This can be achieved by a focal plane shutter that can be switched.
- the use of a self-holding solenoid instead of using an actuator having a rotor can suppress an increase in the size of the focal plane shutter.
- the above object can also be achieved by an optical apparatus equipped with the above focal plane shutter.
- FIG. 9 is an enlarged view around the first lever and the second lever in FIG. 8. Explanatory drawing of operation
- FIG. 1 is a front view of a focal plane shutter according to the present embodiment.
- the focal plane shutter 1 includes a substrate 10, a front curtain 20a, a rear curtain 20b, arms 31a and 31b, a first lever 40, a second lever 50, a rear curtain drive lever 60, a front curtain electromagnet (hereinafter referred to as a front curtain electromagnet).
- 70a front curtain electromagnet
- electromagnet rear curtain electromagnet
- solenoid self-holding solenoid
- set lever 90 set lever 90.
- the substrate 10 is made of a synthetic resin.
- the substrate 10 has a substantially rectangular opening 11.
- the front curtain 20a is composed of four blades, but only one blade 21a is shown in the drawing.
- the rear curtain 20b is composed of four blades, but only one blade 21b is shown in the drawing.
- Each of the front curtain 20a and the rear curtain 20b may be composed of five blades, or may be composed of three or two blades.
- FIG. 1 shows a case where the front curtain 20a is in a superimposed state and the rear curtain 20b is in a deployed state. In the case of FIG. 1, the front curtain 20 a is retracted from the opening 11 so as to open the opening 11, and the rear curtain 20 b closes the opening 11.
- the front curtain 20a is connected to two arms, but only one arm 31a is shown in the drawing.
- the rear curtain 20b is connected to two arms, but in the drawing, only one arm 31b is shown.
- the arms 31a and 31b are supported on the substrate 10 so as to be swingable.
- the substrate 10 is provided with a first lever 40 for driving the arm 31a, a second lever 50, and a rear curtain drive lever 60 for driving the arm 31b.
- the first lever 40 and the second lever 50 will be described later.
- the rear curtain drive lever 60 has a cylindrical portion 65.
- the cylindrical portion 65 is rotatably fitted to a shaft portion 15b formed on the substrate 10.
- the rear curtain drive lever 60 is supported by the substrate 10 so as to be swingable within a predetermined range.
- the rear curtain drive lever 60 is provided with a drive pin 63.
- the substrate 10 is provided with escape holes 13b for escaping the movement of the drive pins 63.
- the escape hole 13b has an arc shape.
- the drive pin 63 is fitted in the fitting hole of the arm 31b.
- the rear curtain drive lever 60 holds a movable iron piece 67.
- the rear curtain drive lever 60 can swing between a position where the movable iron piece 67 contacts the electromagnet 70b and a position where the movable iron piece 67 retracts from the electromagnet 70b.
- a biasing spring (not shown) is fitted around the cylindrical portion 65. The urging spring urges the trailing curtain drive lever 60 in a direction in which the movable iron piece 67 is separated from the electromagnet 70b. That is, the urging spring urges the rear curtain drive lever 60 so that the rear curtain 20 b closes the opening 11.
- the electromagnet 70b can attract the movable iron piece 67 when energized.
- the electromagnet 70b includes an iron core 71b and a coil wound around the iron core 71b to excite the iron core 71b. In the drawing, only the iron core 71b is shown. When the coil is energized, the iron core 71 b generates a magnetic attractive force, and the iron core 71 b can attract the movable iron piece 67. When the movable iron piece 67 is in contact with the iron core 71b, the trailing curtain 20b opens the opening 11.
- FIG. 2 is an enlarged view around the first lever 40 and the second lever 50 in FIG. 3 and 4 are exploded perspective views showing structures around the first lever 40 and the second lever 50.
- FIG. 5 is a side view showing the structure around the first lever 40 and the second lever 50. 2 to 4, the first lever 40 is hatched.
- the first lever 40 has a drive pin 43 fitted to the arm 31a.
- the board 10 is formed with an arc-shaped escape hole 13a through which the drive pin 43 is escaped.
- a hole 45 is formed in the first lever 40, and a shaft portion 15 a formed in the substrate 10 passes through the hole 45. Thereby, the first lever 40 is rotatably fitted to the shaft portion 15a.
- the first lever 40 holds the movable iron piece 47.
- the spring S1 is a coiled spring, and one end S11 of the spring S1 is locked by a locking portion 18 formed on the substrate 10.
- the other end S12 of the spring S1 is bent so as to engage with the first lever 40, as shown in FIGS.
- the spring S1 biases the first lever 40 counterclockwise. In other words, the spring S1 biases the first lever 40 so that the front curtain 20a closes the opening 11.
- the spring S1 corresponds to a first biasing member.
- the first lever 40 has an engaging portion 48 that protrudes radially outward.
- the second lever 50 is arranged coaxially with the first lever 40. Specifically, the second lever 50 is rotatably fitted in common with the shaft portion 15a to which the first lever 40 is rotatably fitted.
- the 2nd lever 50 has the cylinder part 55 fitted to the axial part 15a. When the hole 45 of the first lever 40 is fitted into the shaft portion 15a and the cylindrical portion 55 of the second lever 50 is fitted, the first lever 40 and the second lever 50 are arranged coaxially.
- the second lever holds the movable iron piece 57.
- the spring S2 is provided around the cylindrical portion 55.
- the spring S2 is a coiled spring.
- the wire diameter of the spring S2 is larger than the wire diameter of the spring S1, and the total length of the spring S2 is longer than the total length of the spring S1, and the elastic restoring force of the spring S2 is equal to the same deformation amount. , Greater than the elastic restoring force of the spring S1.
- the ratchet gear 100a is rotatably fitted to the shaft portion 15a.
- the ratchet gear 100a has a plurality of teeth on the outer periphery.
- the holding plate 110 is provided with a locking claw (not shown) that can be engaged with the tooth portion.
- the locking claw locks the tooth portion of the ratchet gear 100a, thereby preventing the ratchet gear 100a from rotating according to the biasing force of the spring S2. That is, the latching claw fixes the ratchet gear 100a.
- the other end S22 is locked to the second lever 50 as shown in FIG.
- the spring S2 biases the second lever 50 in the clockwise direction. By adjusting the rotation amount of the ratchet gear 100a, the urging force of the spring S2 can be adjusted.
- the spring S2 corresponds to a second urging member.
- the second lever 50 is formed with an engaging portion 58 that can come into contact with the engaging portion 48 of the first lever 40.
- the first lever 40 also rotates in the clockwise direction together with the second lever 50. Further, the first lever 40 and the second lever 50 can rotate counterclockwise with respect to the first lever 40 so that the engaging portions 48 and 58 are separated from each other.
- the electromagnet 70a has substantially the same configuration as the electromagnet 70b, and includes an iron core 71a and a coil wound around the iron core 71a to excite the iron core 71a. In the drawing, the coil is omitted.
- the iron core 71a is substantially U-shaped. When the coil wound around the iron core 71 a is energized, the iron core 71 a can attract the movable iron piece 57 of the second lever 50.
- the solenoid 80 can attract and hold the movable iron piece 47 of the first lever 40 without being energized.
- the solenoid 80 includes a substantially U-shaped yoke 81 in side view, a permanent magnet 85 assembled to the yoke 81, and a coil (not shown) wound around the yoke 81. Since the permanent magnet 85 is assembled to the yoke 81, the yoke 81 has a predetermined polarity due to the influence of the permanent magnet 85. Thereby, the solenoid 80 can adsorb the movable iron piece 47 of the first lever 40 without energization.
- the yoke 81 when the yoke 81 is excited by energizing the coil wound around the yoke 81 of the solenoid 80 so as to cancel the polarity generated in the yoke 81 by the permanent magnet 85, the space between the yoke 81 and the movable iron piece 47 is increased. The magnetic attraction force is weakened. Therefore, when the coil of the solenoid 80 is energized with the movable iron piece 47 of the first lever 40 in contact with the yoke 81, the magnetic attractive force acting between the yoke 81 and the movable iron piece 47 is applied to the spring S1. Below the force, the first lever 40 rotates counterclockwise according to the force of the spring S1 and retracts from the solenoid 80.
- the set lever 90 is for setting the second lever 50 and the rear curtain drive lever 60 so as to contact the electromagnets 70a and 70b, respectively.
- the set lever 90 is rotatably supported by the substrate 10.
- the set lever 90 has a pressed portion 93 that is pressed by a charge member provided on the camera side.
- the set lever 90 has pressing portions 94 and 96.
- the pressed portion 93 and the pressing portions 94 and 96 protrude outward from the center of rotation of the set lever 90.
- the second lever 50 and the rear curtain drive lever 60 have rollers 54 and 64, respectively.
- the set lever 90 rotates clockwise. Accordingly, the pressing portions 94 and 96 are brought into contact with the rollers 54 and 64, respectively, and the second lever 50 and the rear curtain drive lever 60 are moved counterclockwise. Accordingly, the second lever 50 and the rear curtain drive lever 60 can be brought into contact with the electromagnets 70a and 70b, respectively.
- the set lever 90 is attached with a return spring (not shown) for returning the set lever 90 to the initial position.
- the return spring biases the set lever 90 counterclockwise.
- the set lever 90 shown in FIG. 1 is positioned at the initial position.
- the substrate 10 is provided with a positioning portion for positioning the set lever 90 urged counterclockwise by the return spring at the initial position.
- the focal plane shutter 1 can selectively switch between the first and second modes.
- the first mode the second lever 50 and the rear curtain drive lever 60 are set while the opening 11 is opened in the front curtain 20a and the rear curtain 20b.
- the second mode the second lever 50 and the rear curtain drive lever 60 are set with the front curtain 20a closing the opening 11 and the rear curtain 20b opening the opening 11.
- FIG. 6 is a timing chart of the focal plane shutter 1 in the first mode.
- FIG. 1 shows an initial state. In the initial state, the movable iron piece 47 of the first lever 40 is held by the solenoid 80, the front curtain 20 a opens the opening 11 retracted from the opening 11, and the rear curtain 20 b closes the opening 11.
- the pressing portions 94 and 96 of the set lever 90 are the roller 54 of the second lever 50 and the roller 64 of the rear curtain drive lever 60, respectively.
- the second lever 50 and the rear curtain drive lever 60 are rotated counterclockwise. As shown in FIG.
- the set lever 90 has the second lever 50, the rear lever 50 until the movable iron piece 57 of the second lever 50 contacts the electromagnet 70a and the movable iron piece 67 of the rear curtain drive lever 60 contacts the electromagnet 70b.
- the curtain drive lever 60 is rotated counterclockwise.
- FIG. 9 is an enlarged view of the periphery of the first lever 40 and the second lever 50 in the set state in the first mode.
- the movable iron piece 57 is in contact with the electromagnet 70 a and the movable iron piece 47 is in contact with the solenoid 80.
- FIGS. 7 to 9 correspond to the open state of state 1 shown in the timing chart of FIG.
- FIG. 11 is an enlarged view around the first lever 40 and the second lever 50 in FIG. As shown in FIG. 11, the engaging portions 48 and 58 are in contact with each other.
- the states of FIGS. 10 and 11 correspond to the closed state of state 2 shown in the timing chart of FIG.
- the electromagnets 70a and 70b are energized.
- the movable iron pieces 57 and 67 are attracted to the electromagnets 70a and 70b, respectively, and the second lever 50 and the rear curtain drive lever 60 are maintained in the state shown in FIG.
- the charging member on the camera side that has pressed the set lever 90 is retracted from the set lever 90, and the set lever 90 rotates counterclockwise according to the urging force of the return spring to move to the initial position.
- the pressing portions 94 and 96 are retracted from the rollers 54 and 64, respectively.
- the state shown in FIG. 12 corresponds to the closed state of state 3 shown in the timing chart of FIG.
- FIG. 13 shows a state during exposure.
- the state shown in FIG. 13 corresponds to the open state of state 4 shown in the timing chart of FIG.
- the movable iron piece 47 of the first lever 40 contacts the yoke 81 of the solenoid 80.
- a magnetic attractive force acts between the yoke 81 of the solenoid 80 and the movable iron piece 47, so that the bounce of the first lever 40 when the movable iron piece 47 comes into contact with the yoke 81 is reduced. It is suppressed.
- the first mode is suitable when taking a picture in the live view mode in which the output from the image sensor is displayed on a liquid crystal monitor or the like in real time.
- FIG. 14 is a timing chart of the focal plane shutter 1 in the second mode.
- the permanent magnet 85 energizes the coil wound around the yoke 81 of the solenoid 80 so as to cancel the polarity generated in the yoke 81.
- the magnetic attractive force acting between the yoke 81 of the solenoid 80 and the movable iron piece 47 of the first lever 40 is weakened.
- the set lever 90 is rotated clockwise by the charge member on the camera side, the pressing portions 94 and 96 of the set lever 90 abut against the rollers 54 and 64, respectively, as shown in FIG.
- FIG. 16 the movable iron pieces 57 and 67 abut against the iron cores 71a and 71b, respectively. Since the first lever 40 rotates counterclockwise in conjunction with the second lever 50, the front curtain 20a closes the opening 11 and the rear curtain 20b opens the opening 11. In this way, the second lever 50 and the rear curtain drive lever 60 are set with the front curtain 20a closing the opening 11 and the rear curtain 20b opening the opening 11.
- FIGS. 1, 15, and 16 corresponds to the closed state of state 1 shown in the timing chart of FIG. FIG. 16 is the same as FIG.
- the second lever 50 and the rear curtain drive lever 60 are set with the opening 11 closed. Therefore, for example, when taking pictures continuously, there is little need to display the output from the image sensor on a liquid crystal monitor or the like each time the pictures are taken. Therefore, the second mode is suitable for such continuous shooting.
- the front curtain 20 a is moved so as to close the opening 11 from the set state where the opening 11 is open, and then the front curtain 20 a is retracted from the opening 11. Then, the opening 11 is opened, and then the opening 11 is closed by the rear curtain 20b, thereby taking a picture.
- the second mode as shown in FIG. 6, from the set state in which the opening 11 is closed by the front curtain 20a, the front curtain 20a is retracted from the opening 11 to open the opening 11, and then the rear curtain 20b. Photographing is performed by closing the opening 11.
- the first mode it is necessary to close the opening 11 once at the front curtain 20a after completion of setting, as compared with the second mode. For this reason, during continuous shooting, the second mode can perform more shooting within a certain period than the first mode.
- the focal plane shutter 1 of the present embodiment can selectively switch between the first and second modes by controlling the energization of the solenoid 80. Thereby, a mode suitable for the photographing mode can be selected with a single focal plane shutter.
- the focal plane shutter 1 of the present embodiment employs a solenoid 80.
- a solenoid 80 an actuator having a stator, a coil, and a rotor may be used.
- an actuator having a stator, a coil, and a rotor may be used.
- the entire apparatus becomes large.
- the focal plane shutter 1 according to the present embodiment employs a solenoid 80 that can attract and hold the first lever 40 without being energized, thereby suppressing an increase in size of the entire apparatus.
- the rotational torque of the rotor varies greatly depending on the position of the rotor. For this reason, variation in the rotational torque of the rotor increases the degree of variation in the moving speed of the curtain driven by the rotor, which may affect the image quality.
- the moving speed of the first lever 40 is substantially constant, whereby the moving speed of the front curtain 20a is also constant. Therefore, the focal plane shutter 1 of this embodiment has little influence on the image quality.
- the solenoid 80 can hold the first lever 40 without energization, and the solenoid 80 is energized only when it is desired to retract the first lever 40 from the solenoid 80.
- the first lever 40 retracts from the solenoid 80 according to the biasing force of the spring S1. For this reason, power consumption is suppressed.
- the energization direction of the coil of the solenoid 80 may be one. Thereby, the energization control of the coil of the solenoid 80 is simplified.
- the rotor when such an actuator is employed, the rotor is held at a desired position by detent torque when no power is supplied. For this reason, for example, when an impact is applied to the apparatus, the rotor may rotate and shift from a desired position.
- the magnetic attractive force acting between the solenoid 80 and the first lever 40 can be made larger than the detent torque acting on the rotor of such an actuator. This prevents malfunction when an impact is applied.
- the front curtain 20 a is moved so as to close the opening 11 from the set state where the opening 11 is open, and then the front curtain 20 a is retracted from the opening 11.
- an electronic front curtain of an image sensor provided on the camera side is used instead of the front curtain 20a, and mechanical
- the shutter may be used as an electronic front curtain mode in which imaging is performed only by the operation of the rear curtain 20b.
- the front curtain 20a is not moved from the set state in which the opening 11 shown in FIG. 6 is open, and the image sensor sequentially accumulates image signals for each line orthogonal to the traveling direction of the rear curtain 20b.
- Photographing may be performed by performing exposure in synchronization with a mechanical rear curtain 20b that closes the opening 11 after the exposure time has elapsed.
- the electronic front curtain mode is a mode in which only the presence / absence of the closing operation of the opening 11 of the front curtain 20a by the first lever 40, specifically the presence / absence of energization of the coil of the solenoid 80, is different in the first mode.
- the energization direction of the coil of the solenoid 80 may be one way, and the energization control is simplified. Therefore, the focal plane shutter of the present invention can easily cope with the electronic front curtain shooting mode on the camera side in addition to the first mode and the second mode.
- the spring S1 biases the front curtain 20a so that the front curtain 20a closes the opening 11.
- One end S11 of the spring S1 is locked to the substrate 10 side, and the other end S12 is locked to the first lever 40 side.
- the spring S1 is not limited to such a configuration.
- one end S11 of the spring S1 is locked to the second lever 50 side
- the other end S12 of the spring S1 is locked to the first lever 40 side
- the first lever 40 is set with the second lever 50 set. May be biased so as to rotate toward the second lever 50.
- one end S11 of the spring S1 is locked to the engaging portion 58
- the other end S12 of the spring S1 is locked to the engaging portion 48
- the spring S1 is brought into contact with the engaging portion 48 and the engaging portion 58. May be energized.
- the optical apparatus provided with the focal plane shutter 1 of this embodiment is, for example, a single lens reflex camera or a digital camera.
- the focal plane shutter 1 of this embodiment can be used for a digital camera, but can also be used for a silver salt film camera other than a digital camera. That is, the focal plane shutter 1 according to the present embodiment can be used for either a digital camera or a silver circle film camera, and the shutter can be shared between both cameras.
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Abstract
Description
図1は、本実施例に係るフォーカルプレーンシャッタの正面図である。図1に示すように、フォーカルプレーンシャッタ1は、基板10、先幕20a、後幕20b、アーム31a、31b、第1レバー40、第2レバー50、後幕駆動レバー60、先幕電磁石(以下、電磁石と称する)70a、後幕電磁石(以下、電磁石と称する)70b、自己保持型ソレノイド(以下、ソレノイドと称する)80、セットレバー90を有している。基板10は、合成樹脂製である。基板10は、略矩形状の開口11を有している。
Claims (7)
- 基板を有した開口と、
前記開口を開閉可能な先幕及び後幕と、
前記後幕を駆動可能な後幕レバーと、
前記先幕に連結され前記先幕を駆動可能な第1レバーと、
前記第1レバーと同軸上に配置され前記先幕が前記開口を開くように前記第1レバーを押圧可能に前記第1レバーに当接する係合部を有する第2レバーと、
前記先幕が前記開口を開いた状態となるように前記第1レバーを無通電で保持可能な自己保持型ソレノイドと、
前記第2レバー及び前記後幕レバーをそれぞれ通電により保持可能な先幕電磁石及び後幕電磁石と、
前記第2レバー及び後幕レバーがそれぞれ前記先幕電磁石及び後幕電磁石に当接するようにセットするセットレバーと、を備え、
前記先幕及び後幕が前記開口を開いた状態で前記第2レバー及び後幕レバーがセットされる第1モードと、前記先幕が前記開口を閉じ前記後幕が前記開口を開いた状態で前記第2レバー及び後幕レバーがセットされる第2モードとを、選択的に切り替え可能である、フォーカルプレーンシャッタ。 - 前記第1モードにおいては、前記第1レバーは前記自己保持型ソレノイドにより保持された状態で前記第2レバーがセットされ、
前記第2モードにおいては、前記第1レバーは前記自己保持型ソレノイドから退避した状態で前記第2レバーがセットされる、請求項1のフォーカルプレーンシャッタ。 - 前記第1レバーは、前記先幕が前記開口を閉じるように第1付勢部材により付勢されており、
前記第2レバーは、前記先幕が前記開口を開くように前記第1レバーを押圧するように第2付勢部材により付勢されている、請求項1又は2のフォーカルプレーンシャッタ。 - 前記第1モードにおいて、前記第2レバーがセットされた後、前記第2レバーが前記先幕電磁石に保持された状態で前記第1付勢部材の付勢力により前記第1レバーが移動して前記先幕が前記開口を閉じた後、前記先幕電磁石への通電が遮断されて前記第2付勢部材の付勢力により前記第1レバーが前記第1付勢部材の付勢力に抗して移動して前記先幕が前記開口を開き、
前記第2モードにおいては、前記第2レバーがセットされた後、前記先幕電磁石への通電を遮断されて前記第2付勢部材の付勢力により前記第1レバーが前記第1付勢部材の付勢力に抗して移動して前記先幕が前記開口を開く、請求項3のフォーカルプレーンシャッタ。 - 前記第1レバーは、前記第2レバーが前記先幕電磁石に吸着保持された状態から前記先幕電磁石への通電が遮断されて前記第2付勢部材の付勢力により回転して無通電状態の前記自己保持型ソレノイドに当接する、請求項4のフォーカルプレーンシャッタ。
- 前記第1モードにおいて、後幕レバーがセットされた後、前記先幕が前記開口を開いた状態で前記後幕電磁石への通電が遮断されて前記後幕が前記開口を閉じる、請求項3のフォーカルプレーンシャッタ。
- 請求項1のフォーカルプレーンシャッタを備えた光学機器。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020127022436A KR101302925B1 (ko) | 2010-09-14 | 2011-06-02 | 초점면 셔터 및 광학 기기 |
CN201180015062.4A CN102822737B (zh) | 2010-09-14 | 2011-06-02 | 焦平面快门和光学装置 |
US13/608,202 US8465217B2 (en) | 2010-09-14 | 2012-09-10 | Focal-plane shutter and optical equipment |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2010206013A JP5191518B2 (ja) | 2010-09-14 | 2010-09-14 | フォーカルプレーンシャッタ及び光学機器 |
JP2010-206013 | 2010-09-14 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/608,202 Continuation US8465217B2 (en) | 2010-09-14 | 2012-09-10 | Focal-plane shutter and optical equipment |
Publications (1)
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WO2012035831A1 true WO2012035831A1 (ja) | 2012-03-22 |
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Family Applications (1)
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PCT/JP2011/062654 WO2012035831A1 (ja) | 2010-09-14 | 2011-06-02 | フォーカルプレーンシャッタ及び光学機器 |
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US (1) | US8465217B2 (ja) |
JP (1) | JP5191518B2 (ja) |
KR (1) | KR101302925B1 (ja) |
CN (1) | CN102822737B (ja) |
WO (1) | WO2012035831A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015161779A (ja) * | 2014-02-27 | 2015-09-07 | 株式会社ニコン | カメラのシャッタ装置およびカメラ |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012215658A (ja) * | 2011-03-31 | 2012-11-08 | Seiko Precision Inc | 羽根駆動装置及び光学機器 |
JP6153362B2 (ja) * | 2013-03-27 | 2017-06-28 | セイコープレシジョン株式会社 | 撮像装置及びフォーカルプレーンシャッタ |
JP5941030B2 (ja) * | 2013-09-27 | 2016-06-29 | 日本電産コパル株式会社 | カメラ用フォーカルプレンシャッタ及びそれを備えたデジタルカメラ |
WO2015146971A1 (ja) * | 2014-03-26 | 2015-10-01 | 株式会社ニコン | シャッタ装置および撮像装置 |
JP6421080B2 (ja) * | 2015-05-29 | 2018-11-07 | 日本電産コパル株式会社 | カメラ用フォーカルプレーンシャッタ及びカメラ |
JP6228628B2 (ja) * | 2016-05-17 | 2017-11-08 | 日本電産コパル株式会社 | カメラ用フォーカルプレンシャッタ及びそれを備えたデジタルカメラ |
JP2019045544A (ja) * | 2017-08-30 | 2019-03-22 | 日本電産コパル株式会社 | フォーカルプレンシャッタ、及び撮像装置 |
JP2020101644A (ja) * | 2018-12-21 | 2020-07-02 | キヤノン株式会社 | シャッタユニットおよび撮像装置 |
Citations (3)
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JP2004317590A (ja) * | 2003-04-11 | 2004-11-11 | Seiko Precision Inc | フォーカルプレーンシャッタ |
JP2005070454A (ja) * | 2003-08-25 | 2005-03-17 | Seiko Precision Inc | フォーカルプレーンシャッタ |
JP2010152000A (ja) * | 2008-12-24 | 2010-07-08 | Sony Corp | 撮像装置 |
Family Cites Families (8)
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JP4086702B2 (ja) | 2003-04-11 | 2008-05-14 | セイコープレシジョン株式会社 | フォーカルプレーンシャッタ |
US7492410B2 (en) * | 2003-11-25 | 2009-02-17 | Nikon Corporation | Electronic camera |
US7513702B2 (en) * | 2005-11-16 | 2009-04-07 | Va, Inc. | Non-contact shutter activation system and method |
JP4628387B2 (ja) * | 2006-03-31 | 2011-02-09 | 日本電産コパル株式会社 | カメラ用フォーカルプレンシャッタ |
JP4931471B2 (ja) * | 2006-04-27 | 2012-05-16 | 日本電産コパル株式会社 | デジタルカメラ用フォーカルプレンシャッタ |
JP4909019B2 (ja) * | 2006-11-20 | 2012-04-04 | キヤノン株式会社 | シャッタ装置および撮像装置 |
JP2010034818A (ja) * | 2008-07-29 | 2010-02-12 | Sony Corp | シャッタ装置および撮像装置 |
JP5484229B2 (ja) * | 2010-07-12 | 2014-05-07 | セイコープレシジョン株式会社 | フォーカルプレーンシャッタ及び光学機器 |
-
2010
- 2010-09-14 JP JP2010206013A patent/JP5191518B2/ja active Active
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2011
- 2011-06-02 KR KR1020127022436A patent/KR101302925B1/ko not_active IP Right Cessation
- 2011-06-02 CN CN201180015062.4A patent/CN102822737B/zh not_active Expired - Fee Related
- 2011-06-02 WO PCT/JP2011/062654 patent/WO2012035831A1/ja active Application Filing
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2012
- 2012-09-10 US US13/608,202 patent/US8465217B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004317590A (ja) * | 2003-04-11 | 2004-11-11 | Seiko Precision Inc | フォーカルプレーンシャッタ |
JP2005070454A (ja) * | 2003-08-25 | 2005-03-17 | Seiko Precision Inc | フォーカルプレーンシャッタ |
JP2010152000A (ja) * | 2008-12-24 | 2010-07-08 | Sony Corp | 撮像装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015161779A (ja) * | 2014-02-27 | 2015-09-07 | 株式会社ニコン | カメラのシャッタ装置およびカメラ |
Also Published As
Publication number | Publication date |
---|---|
KR20120118052A (ko) | 2012-10-25 |
CN102822737B (zh) | 2015-04-01 |
US20120328280A1 (en) | 2012-12-27 |
JP2012063448A (ja) | 2012-03-29 |
KR101302925B1 (ko) | 2013-09-06 |
JP5191518B2 (ja) | 2013-05-08 |
CN102822737A (zh) | 2012-12-12 |
US8465217B2 (en) | 2013-06-18 |
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