摘要:
A camera provided with a lens assembly, a CCD and a circuit for applying a signal which is disposed between the lens assembly and the CCD, where the circuit for applying a signal is vibrated.
摘要:
An ultrasonic motor, comprises an annular stator including an elastic member and piezo-electric elements secured to said elastic member which generate a travelling wave on the surface of the elastic member by being applied with high frequency voltages; and a rotor which is in pressure-contact with the elastic member and is driven to be rotated with respect to said stator by the travelling wave. The rotor includes a cylindrical main body and a thin radial flange integrally secured to the periphery of the rotor main body at one end of the main body facing the stator, and a cylindrical vibration portion secured to a periphery of the flange having a diameter different from that of the rotor main body. The vibration portion extends in a direction which is the same as the vibration direction of the travelling wave. The rotor satisfies the following relation 5
摘要:
In a vibration wave motor having a vibration member and a movable member press-contacted to the vibration member so as to be rotatably driven thereby, the vibration member is supported by a plurality of elastic supporting arms and the elasticity of the supporting arms produces a frictional force between the vibration member and the movable member.
摘要:
A photographing apparatus includes: a taking lens including a movable focusing lens; an image pickup portion that converts an optical image obtained via the taking lens into an image signal; a movement determining portion that determines movement of the photographing apparatus in an optical axis direction of the taking lens; and a recording portion that continuously records therein a plurality of images obtained by the image pickup portion with the focusing lens being set to a fixed position so that the taking lens is at a predetermined focused position as the photographing apparatus moves in the optical axis direction of the taking lens.
摘要:
Provided are a driving apparatus and an imaging device having the driving apparatus mounted thereon, the driving apparatus being capable of performing, with a simple configuration, driving in the Z-axis direction in addition to driving in a direction along the XY plane, reducing friction at the time of driving, and performing precise position holding at the time of stop. A driving apparatus includes: a frame, a contact body supported by the frame; a holder pressed against the contact body to be supported thereby; a VCM for relatively moving the frame in a direction along a support plane formed by the contact body; and a transducer for displacing, relative to the frame, the contact body in the Z-axis direction. When driving, the transducer causes the contact body to vibrate in the Z-axis direction so as to reduce a frictional force between the contact body and the holder.
摘要:
A dust-screening member is shaped like a plate as a whole. A vibrating member is adjacent to one side of the dust-screening member and arranged on the surface along the one side. A drive unit is configured to drive the vibrating member to produce a vibration having a vibrational amplitude perpendicular to the surface, on the surface, such that peak ridges of the vibration form a closed loop and an area including a center of the closed loop surrounded by a node area having almost no vibrational amplitude. When a length of a side in a dust-screening member virtual rectangle corresponding to a short side of a vibrating member virtual rectangle is assumed to be LFw, and a length of short side of the vibrating member virtual rectangle is assumed to be WE, WF/LFw has a dimension of 0.095 or greater and 0.105 or less.
摘要:
Provided are a driving apparatus and an imaging device having the driving apparatus mounted thereon, the driving apparatus being capable of performing, with a simple configuration, driving in the Z-axis direction in addition to driving in a direction along the XY plane, reducing friction at the time of driving, and performing precise position holding at the time of stop. A driving apparatus includes: a frame, a contact body supported by the frame; a holder pressed against the contact body to be supported thereby; a VCM for relatively moving the frame in a direction along a support plane formed by the contact body; and a transducer for displacing, relative to the frame, the contact body in the Z-axis direction. When driving, the transducer causes the contact body to vibrate in the Z-axis direction so as to reduce a frictional force between the contact body and the holder.
摘要:
A vibrating device includes a dust-screening member which is shaped like a plate as a whole and has at least one side that is symmetric with respect to a symmetry axis, and a vibrating member secured to the dust-screening member and configured to produce, at the dust-screening member, vibration having a vibrational amplitude perpendicular to a surface of the dust-screening member. The vibrating device further includes a drive unit configured to drive the vibrating member to produce vibration Z(x, y) at the dust-screening member, the vibration being expressed as follows: Z(x,y)=Wmn(x,y)·cos(γ)+Wnm(x,y)·sin(γ) where Z(x, y) is vibration at a given point P(x, y) on the dust-screening member, m and n are positive integers including 0, indicating the order of natural vibration corresponding to a vibrational mode, W mn ( x , y ) = sin ( n π · x + π 2 ) · sin ( m π · y + π 2 ) , W nm ( x , y ) = sin ( m π · x + π 2 ) · sin ( n π · y + π 2 ) , and γ is +π/4 or ranges from −π/8 to −π/4.
摘要:
An X-axis driving mechanism section as one of driving sources of a driving apparatus including: a transducer for generating an elliptical vibration on a driving section in response to application of a predetermined frequency voltage signal; a bottom case having a holding section for holding the transducer; a pressing mechanism arranged on the bottom case to press the driving section of the transducer; and a rod relatively driven by the elliptical vibration of the transducer while being pressed by the pressing mechanism and with a moving direction being restricted by a guiding section of the holding member; wherein a weight is fixed to an end portion of the rod. The X-axis driving mechanism section constitutes the driving apparatus which is small and provides a large driving force, is capable of stable driving with higher efficiency without producing audible noise, and can retain the rod position and has high responsiveness with high accuracy.
摘要:
A camera provided with a lens assembly, a CCD and a circuit for applying a signal which is disposed between the lens assembly and the CCD, where the circuit for applying a signal is vibrated.