摘要:
A focal-plane shutter includes: a mechanical portion including: a board including an opening; and a leading blade and a trailing blade capable of opening and closing the opening; and a leading blade actuator and a trailing blade actuator respectively driving the leading blade and the trailing blade, and respectively including a leading blade coil and a trailing blade coil, wherein a current value flowing through at least one of the leading blade coil and the trailing blade coil is adjusted such that one of variations in a leading blade run-up period and a trailing blade run-up period depending on a temperature change corresponds to the other one.
摘要:
To provide a blade drive device capable of suppressing the increase in number of components while suppressing the bounding of blades, and an optical apparatus including the blade drive device. A blade drive device 10 includes a partition plate 21 having an opening 22, blades 31a to 34a, 31b to 34b which are expanded in a state where the opening 22 is closed and which overlap one another in a state where the opening 22 is opened, and a first regulating portion 23A and a second regulating portion 24A integrally formed with the partition plate 21, on which the blades 31a, 31b abut when being expanded. An optical apparatus includes the blade drive device 10.
摘要:
An image pickup device includes: an image pickup element; a board including an opening through which light entering the image pickup element passes; a shutter opening and closing the opening; an actuator driving the shutter, and including: a rotor; a stator; and first and second coils wound around the stator and not electrically connected to each other; and a drive circuit including plural terminal portions to which the first and second coils are individually connected.
摘要:
A focal plane shutter includes a board including an opening; a leading blade and a trailing blade opening and closing the opening; a trailing blade actuator driving the trailing blade; a drive member driving the trailing blade by receiving driving force of the trailing blade actuator; and a buffering member abutting with the drive member in a state where the trailing blade recedes away from the opening, wherein the trailing blade actuator causes the drive member to move away from the buffering member from an abutting state therewith and to abut therewith again in a charging operation, and then starts an exposure operation.
摘要:
A blade driving device includes: a board including an opening; first and second blades opening and closing the opening; first and second actuators arranged adjacent to each other and respectively driving the first and second blades, and respectively including first and second stators, first and second rotors, and first and second coils; a printed circuit board; and solder portions electrically connecting the first and second coils with the printed circuit board; wherein the solder portions includes: first and second solder portions respectively connecting one end and another end of the first coil with the printed circuit board; and third and fourth solder portions respectively connecting one end and another end of the second coil with the printed circuit board; and the first, second, third, and fourth solder portions face one another.
摘要:
An imaging device includes: a focal plane shutter including: a board including an opening; a leading shutter and a trailing shutter opening and closing the opening; a leading shutter actuator and a trailing shutter actuator respectively driving the leading shutter and the trailing shutter; and a restrict portion that restricts reciprocating movement ranges of the leading shutter and the trailing shutter, an image pickup element which light enters through the opening; and a drive control portion.
摘要:
A focal-plane shutter capable of suppressing production of foreign matter is provided. The focal-plane shutter includes a base plate, rear curtain drive arms, a blade that is driven by the rear curtain drive arms, and an elastically deformable cushioning member that comes into contact with the blade that moves from a retracted position to an unfolded position. The blade extends in a first direction. The rear curtain drive arms are swingable around the centers of swing motion provided on one side of the blade in the first direction. The cushioning member has a contact section that comes into contact with a side edge of the blade, a holding section that is arranged on the side opposite the blade with the contact section therebetween, and a connecting section that connects the contact section and the holding section to each other. The connecting section inclines with respect to a second direction perpendicular to the first direction and extends toward the centers of swing motion.
摘要:
A focal-plane shutter capable of preventing deterioration of the quality of a captured image is provided. A focal-plane shutter includes a base plate having an opening, a rear curtain that moves between an open position where the opening is open and a closed position where the opening is closed to allow the opening to be open and closed, and a first cushioning member that comes into contact with the rear curtain, and the rear curtain has a first protrusion that is located outside the opening, protrudes in a first direction from the open position toward the closed position, and comes into contact with the first cushioning member when the rear curtain moves from the open position to the closed position.
摘要:
A focal plane shutter includes: a board including an opening; a blade opening or closing the opening; an electromagnet including an iron core and a coil for energizing the iron core; and a drive lever holding an iron piece capable of being adsorbed to the iron core, capable of moving such that iron piece is moved into and away from the iron core, and driving the blade, wherein a plating process is performed on the iron core and the iron piece, a Vickers hardness of a plating of the iron piece is greater than that of a plating of the iron core, and a difference in the Vickers hardness between the plating of the iron piece and the plating of the iron core is 100 HV or more.
摘要:
To provide a blade drive device capable of suppressing variations in movement speed of blades at the time of continuous operation and shortening the operation interval of blades. A blade drive device 10 includes a bed plate 11 having an opening 12, a blade receiving plate 15 arranged so as to face the bed plate 11, a plurality of blades 31b to 34b provided between the bed plate 11 and the blade receiving plate 15, which are expanded in a state where the opening 12 is closed and are housed while overlapping one another in a state where the opening 12 is opened and a regulating member 80 having an abutting surface 82 on which side edge portions 31b1 to 34b1 of the blades 31b to 34b abut when the blades are housed. The abutting surface 82 is an inclined surface 83 inclined to the bed plate 11 side as it goes from the bed plate 11 side to the blade receiving plate 15 side.