Sony Corporation

Toshiro Hayashi

Masafumi Yoneda

Naomasa Sato

Hiroyuki Itoh

Tetsuo Endo

Ichiro Katagiri

Yuichi Nanae

Hiroyoshi Hayashi

Takahiro Kobayashi

Yasuhito Eguchi

Shoji Tanina

Syunji Ooshima

To enable correction or adjustment of a curtain travel curve in a case of driving an opening and closing blade by a power source in which a motor mechanism and a spring mechanism are combined. Provided are the motor mechanism that generates a traveling torque of the opening and closing blade of a mechanical shutter provided in an incident light path to an imaging element by electric conduction to a coil, and the spring mechanism that generates the traveling torque of the opening and closing blade together with the motor mechanism. In this case, a control unit capable of individually controlling a time length from the start of the electric conduction to the coil to the start of traveling of the opening and closing blade, and a value of a current to be supplied to the coil is provided.

Imaging apparatus and shutter driving method

Provided are a first magnetic drive unit including a first coil and a first magnet, and a second magnetic drive unit including a second coil and a second magnet. Also provided are a first drive lever and a second drive lever operated by the first magnetic drive unit and the second magnetic drive unit, respectively, a first opening and closing blade and a second opening and closing blade that open and close an opening by an operation of the first drive lever and the second drive lever, respectively. A first lock mechanism locks the first drive lever at a predetermined position, and a second lock mechanism that locks the second drive lever at a predetermined position, and a part of the first lock mechanism and a part of the second lock mechanism are located between the first magnetic drive unit and the second magnetic drive unit.

Blade opening and closing device and imaging apparatus

To secure a favorable photographing state without causing an increase of power consumption. A blade opening/closing apparatus includes a magnetic driving portion including a coil to which a driving current is supplied and a magnet that is rotated along with energization to the coil; a driving body that includes a to-be-locked portion and is operated by the magnetic driving portion; an opening/closing blade that opens/closes an aperture by an operation of the driving body; and a lock portion that sets a locked state of the opening/closing blade by engaging with the to-be-locked portion, the setting of the locked state and a release of the locked state being carried out in accordance with a rotation position of the magnet. Accordingly, since the lock portion engages with the to-be-locked portion to thus set the locked state and unlock the locked state in accordance with the rotation position of the magnet and locking with respect to the opening/closing blade is not performed by a magnetic force of the magnet, a favorable photographing state can be secured without causing an increase of power consumption.

Blade opening/closing apparatus and image pickup apparatus to secure favorable photographing states by use of a biasing spring and magnetic driving portion for setting a rotation position associated with locked/unlocked states

An effect that drive of one of a first magnetic driving unit and a second magnetic driving unit prevents a movement of the other magnetic driving unit is not generated to appropriately control movements of first opening and closing blades and second opening and closing blades. A blade opening and closing device includes a base body which includes an opening for transmitting light, a first magnetic driving unit which includes a first magnet and a first coil, a second magnetic driving unit which includes a second magnet and a second coil, first opening and closing blades which are moved by the first magnetic driving unit relative to the base body and to open and close the opening, and second opening and closing blades which are moved by the second magnetic driving unit relative to the base body and to open and close the opening. A magnetic flux direction of the first magnetic driving unit is opposite to a magnetic flux direction of the second magnetic driving unit.

Blade opening and closing device and image pickup device

A moving apparatus with a driving force assist mechanism traveled mainly by human power. This moving apparatus detects, in a non-contact manner, with respect to rotating portion such as traveling wheel, etc., rotation speed of the rotating portion to detect traveling state to deliver, from the driving force assist mechanism, assistant driving force corresponding to speed change information that a person who operates the moving apparatus intends to give on the basis of the detected traveling information to carry out traveling to thereby permit smooth traveling even in the case where traveling by only human power becomes difficult.

Moving apparatus with drive force assist mechanism and movement control method

The present invention provides a novel torque detecting apparatus capable of detecting torque with a simple structure and high precision by way of transmitting drive force via a pair of rotary bodies that cause own relative position to be varied by effect of torque to enable detection of variation of resonant frequency corresponding to variation of the relative position under non-contact condition or by way of transmitting drive force via a pair of rotary bodies that cause own relative position to be varied by effect of torque to enable transmission of modulated signal corresponding to variation of the relative position under non-contact condition.

Growing community of inventors

Chiba, Japan

Toshiro Hayashi