Patent application number | Description | Published |
20080240708 | Focal-plane shutter - A focal-plane shutter has a first plate having a first opening, a second plate having a second opening, a shutter blade disposed between the first plate and the second plate, for opening and closing the first opening and the second opening, and a thin plate disposed at a side of the first plate facing the shutter blade and extending in such a direction that the shutter blade travel. A distance between an edge of the first opening and a center of the first opening is greater than that between an edge of the thin plate and the center of the first opening. | 10-02-2008 |
20140247387 | IMAGE PICKUP DEVICE AND FOCAL PLANE SHUTTER - An image pickup device includes: a focal plane shutter including: a board including an opening; a leading shutter and a trailing shutter moving to open and close the opening; a leading-shutter actuator and a trailing-shutter actuator respectively causing the leading shutter and the trailing shutter to move; a leading-shutter sensor detecting that the leading shutter passes through a first position; and a trailing-shutter sensor detecting that the trailing shutter passes through a second position, an image pickup element that light enters through the opening; and a drive control portion. | 09-04-2014 |
20140267853 | IMAGE PICKUP DEVICE AND FOCAL PLANE SHUTTER - An image pickup device includes: an image pickup element; a control portion sequentially resetting charge stored in the image pickup element for every pixel line in a predetermined direction such that an electronic leading blade moves in a simulated manner; and a focal plane shutter. | 09-18-2014 |
20140347534 | IMAGE PICKUP DEVICE AND FOCAL PLANE SHUTTER - An image pickup device includes: an image pickup element; a control portion artificially driving an electronic leading blade by resetting stored charges of the image pickup element in a predetermined direction at every pixel line; and a focal plane shutter includes a board including an opening exposing the image pickup element, a mechanical trailing blade capable of opening and closing the opening, a trailing blade drive lever driving the trailing blade, an actuator actuating the trailing blade drive lever, a shading member capable of opening and closing at least a part of the opening, a shading member drive lever driving the shading member, a connection member provided on the shading member drive lever, and a biasing member biasing the shading member drive lever such that the shading member recedes from the opening. | 11-27-2014 |
20140369675 | BLADE DRIVE DEVICE AND OPTICAL INSTRUMENT - A blade drive device includes: a board including an opening; first and second blades opening and closing the opening; and first and second actuators arranged adjacent to each other and respectively driving the first and second blades, wherein the first and second actuators respectively include first and second stators, first and second rotors, and first and second coils, and the first and second rotors is arranged to sandwich at least one of the first and second coils. | 12-18-2014 |
20150050014 | BLADE DRIVE DEVICE AND OPTICAL INSTRUMENT - A blade drive device includes: a board including an opening; first and second blades opening and closing the opening; and first and second actuators respectively driving the first and second blades, wherein the first and second actuators respectively include first and second stators, first and second rotors, and first and second coils, and respectively drive the first and second blades through first and second drive members, the first drive member is arranged to overlap the first stator and the first coil in an optical axis direction, and the second drive member is arranged to overlap the second stator and the second coil in the optical axis direction. | 02-19-2015 |
Patent application number | Description | Published |
20110116149 | BLADE SPEED ADJUSTABLE MECHANISM AND FOCAL PLANE SHUTTER HAVING THE SAME - A blade speed adjustable mechanism includes: a board having an opening; a shutter blade opening or closing the opening; a drive lever supported by the board and bringing the shutter blade into an overlapped operation or an expanded operation; a biasing member engaging the drive lever and biasing the shutter blade in an overlapped direction or in an expanded direction; a ratchet member engaging the biasing member and having ratchet teeth; an engagement member holding the ratchet member at a desired stop position and adjusting an biasing force of the biasing member by changing the stop position. The engagement member has a plurality of pawl portions different from each other in length. The pawl portion engages the ratchet tooth to hold the ratchet member at the stop position. A difference in length between the pawl portions is shorter than a distance corresponding to a pitch of the ratchet teeth. | 05-19-2011 |
20110128603 | FOCAL PLANE SHUTTER AND OPTICAL DEVICE - A focal plane shutter includes: a board including an opening; a blade closing and opening the opening; a driving lever holding a movable iron piece, swingably supported, and driving the blade; a self-holding solenoid being able to adsorb the movable iron piece in a non-energized state, and an adsorptive force in an energized state being smaller than an adsorptive force in the non-energized state; and a biasing member biasing the driving lever to move away from the self-holding solenoid. The driving lever includes an engagement portion engaging the movable iron piece and made of a non-magnetic material. | 06-02-2011 |
20120087646 | FOCAL-PLANE SHUTTER AND OPTICAL APPARATUS - A focal plane shutter includes: an electromagnet; a board including an opening; blades capable of opening and closing the opening; a drive member holding an iron piece adsorbed to the electromagnet and driving the blades, the drive member being movable such that the iron piece moves toward and away from the electromagnet and being biased by a spring such that the iron piece moves away from the electromagnet; and a holding board facing the board and including a pair of sandwiching portions elastically deformable and holding and sandwiching the electromagnet. The electromagnet includes a restriction portion engaging the board and restricting a movement of the electromagnet in a direction where the iron piece moves away from the electromagnet. | 04-12-2012 |
20120134660 | FOCAL PLANE SHUTTER AND OPTICAL APPARATUS - A focal plane shutter includes: a board including an opening; blades capable of opening and closing the opening; a drive lever swingably supported, holding a movable iron piece and driving the blades; a self-holding type solenoid capable of adsorbing to the movable iron piece by a given attraction force in a non-energized state, and reducing the given attraction force in an energized state; a biasing member biasing the drive lever to move the drive lever away from the self-holding type solenoid; and a set member moving the drive lever to abut the drive lever with the self-holding type solenoid, wherein the self-holding type solenoid is energized to reduce the given attraction force when the drive lever is swung by the set member to abut the movable iron piece with the self-holding type solenoid. | 05-31-2012 |
20120177359 | FOCAL PLANE SHUTTER AND OPTICAL DEVICE USING SAME - A focal plane shutter includes: a board including an opening; blades capable of opening and closing the opening; a drive member movable between a start position and a terminal position, biased toward the terminal position, and driving the blades; a brake member supported to abut and move away from the drive member positioned at the terminal position, and biased to abut the drive member positioned at the terminal position; and a set member rotatable in only one direction, and moving the drive member from the terminal position to the start position; wherein the set member includes a drive portion abutting the brake member to move the brake member away from the drive member and then abutting the drive member to move the drive member toward the start position. | 07-12-2012 |
20120249849 | IMAGE PICKUP DEVICE - An image pickup device includes: an image pickup element; a control portion sequentially resetting charge stored in the image pickup element for every pixel line in a predetermined direction such that an electronic leading shutter moves in a simulated manner; a focal plane shutter including: a board including an opening; a mechanical type of a trailing shutter capable of opening and closing the opening; an actuator driving the trailing shutter; and a detection portion detecting that the trailing shutter passes through a given position of a movement trace of the trailing shutter; and a drive control portion controlling driving of the actuator based on a detection result of the detection portion. | 10-04-2012 |
20120328280 | FOCAL-PLANE SHUTTER AND OPTICAL EQUIPMENT - A focal-plane shutter includes: a board including an opening; a leading blade and a trailing blade; a trailing blade lever; a first lever; a second lever; a self-holding type solenoid; a leading blade electromagnet and a trailing blade electromagnet; and a set lever. | 12-27-2012 |