摘要:
A vibration wave motor is driven at a high efficiency by arranging a contact area of a movable member which contacts a vibration member such that a displacement locus in the contact area is essentially coincident with a vibration locus in the vibration member.
摘要:
A vibration wave motor for driving a moving member contacting a vibration member, to which an electro-mechanical energy transducer element is bonded, by a travelling vibration wave generated in the vibration member, wherein the moving and vibration members contact each other through a plurality of contact points.
摘要:
A vibration wave motor has a movable member divided into a plurality of sections in a direction of movement. Opposite ends of press-contact areas of the divided sections of the movable member to a vibration member are supported by a support member. The press-contact areas have a smaller rigidity than that of the support member.
摘要:
In a vibration motor, electrostrictive elements arranged or polarized phase-differentially are bonded to a plurality of concentric ring-shaped vibration members arranged on at least one of a stator and a rotor, voltages are applied to the electrostrictive elements to generate travelling vibration waves in the vibration members and the rotor contacting to the vibration members is friction-driven by the travelling vibration wave.
摘要:
A light amount adjusting apparatus is constructed by a driving source, a plurality of light shielding members each having a notched portion adapted to form a light passing port, in which the light shielding member is moved by being driven by the driving source to thereby vary an area of the light passing port which is formed in the notched portion, and at least one filter provided for the notched portions of the plurality of light shielding members, in which the filter is provided so as to cover a part of the notched portion and has a first area having first light transmittance and a second area having second light transmittance lower than the first light transmittance. When the area of the light passing port which is formed by the light shielding members is in a maximum state, a relation (A3
摘要:
The present invention relates to an optical instrument such as an optical axis deflecting device or an image stabilizing device having an optical member supported for rotation about a predetermined axis and rotated about the predetermined axis to thereby deflect the optical axis of passing light, moving means adapted to move in a direction along a plane inclined by a predetermined angle from a plane perpendicular to the predetermined axis to thereby rotate the optical member about the predetermined axis, and driving means for driving the moving means. With such construction, a driving force generated by the driving means acts on that portion of the optical member which is far from the rotational shaft thereof and as a result, a driving torque for driving the optical member can be enhanced without causing the bulkiness and higher cost of the device and an increase in consumed electric power.
摘要:
A blur suppressing apparatus includes a blur suppressing device movable in an optical path, for suppressing a blur of an image transmitted along the optical path. A mechanical lock is provided for mechanically locking the blur suppressing device, and an electrical lock is also provided for electrically locking the blur suppressing device. An operation device is provided for operating the mechanical lock and the electrical lock. A control device causes the electrical lock to at least be activated or released independently from the mechanical lock in accordance with the operational state of the operation device.
摘要:
A camera apparatus has an interchangeable lens unit and a transmission line for exchange of information with the lens unit. The lens unit has at least one driving part which is arranged to change the optical condition of the lens unit. The camera system includes a control circuit which is arranged to take in, from the lens unit via the transmission line, information on at least on of the maximum and minimum possible driving speeds of the driving part; to set a driving speed of the driving part within the possible driving speed range of the driving part; and to transmit information on the set driving speed to the lens unit.
摘要:
A heat treating device including a processing vessel for exposing objects to be treated (e.g., semiconductor wafers) held in a wafer boat for a heat treatment, processing gas introduction nozzles for introducing processing gases, a cap for openably closing tightly an opening of the processing vessel; a heat retention cylinder on which the boat is mounted; and a gas introduction opening, a gas passage, and a gas release opening opened in the heat retention cylinder. Processing gases introduced from the introduction nozzles are taken into the heat retention cylinder through the gas introduction opening and released radially from the gas release opening in the top thereof. The heat retention cylinder has the function of introducing the processing gases, whereby high intra-plane film thickness uniformity can be retained without rotating the wafer boat.
摘要:
An optical apparatus arranged to move a lens by using a stepping motor as a driving source, includes detecting mechanisms disposed at a plurality of positions for detecting a plurality of reference positions of the lens, respectively, and a position detecting circuit for finding an absolute position of the lens on the basis of the number of driving steps of the stepping motor relative to each of the plurality of reference positions.