摘要:
Disclosed is a monitor device for a moving body such as a vehicle, aircraft or vessel, moving at a certain speed. The monitor device displays an image of a front scene of the moving body with the image of the central area being enlarged in accordance with the running speed of the moving body such that condition of a far away portion can be recognized accurately. A zoom ratio calculating section determines a zoom ratio in accordance with running speed of the moving body. The area of image to be displayed is selected in accordance with the zoom ratio and the image of the selected area is displayed on a display screen in an enlarged form. A specially designed distortion lens may be used to take the picture of the front scene to form an image of the scene with its central area being optically enlarged.
摘要:
An actuator capable of attaining two-dimensional positioning with a simple configuration includes an electromechanical transducer 11 which makes mechanical displacement in accordance with a voltage applied thereto, a driving shaft 12 which is axially displaced and inclined by the mechanical displacement of the electromechanical transducer 11, a movable member 13 which frictionally engages on the driving shaft 12, and a driving circuit for superposing a direct-current driving voltage leading to an inclination of the driving shaft 12 at a desired angle at a low rate of change preventing slide displacement of the movable member 13 relative to the driving shaft 12 and an alternating driving voltage for causing axial vibrations of the driving shaft 12 so as to cause slide displacement of the movable member 13 relative to the driving shaft 12 and applying the superposed voltages to the electromechanical transducer 11.
摘要:
A small imaging apparatus (1) implementing an optical image stabilizing function has a vibratory driving device (3) which comprises a driving shaft (7), an electromechanical transducer (6) consisting of a plurality of elongatable portions capable of elongating and contracting in an axial direction of the driving shaft (7) respectively and integrated with each other, and a driving member (8) slidably engaging on the driving shaft (7); a axially movable optical member (10) of which position is restrained in the axial direction by the driving member (8); and a vertically movable optical member (9, 11) of which position is restrained in a direction perpendicular to the axial direction by the driving shaft (7), the elongatable portions uniformly elongating and contracting repeatedly to displace the driving member (8) slidingly on the driving shaft (7), and unequally elongating or contracting to incline the driving shaft (7) to displace the driving member (8).
摘要:
A laser optical device, having: a laser light emitting section to emit laser signal light modulated by information; a laser light receiving section to receive the laser signal light emitted from the laser light emitting section; a light condensing optical unit to conduct the laser signal light emitted from the laser light emitting section to the laser light receiving section; an actuator to move the light condensing optical unit; a light intensity detecting section to detect an intensity of the laser signal light conducted to the laser light receiving section; and a control section to control drive of the actuator so as to align the laser signal light conducted by the light condensing optical unit to the laser light receiving section; wherein the control section drives the actuator in a predetermined period which synchronizes with a predetermined signal included in the laser signal light.
摘要:
A driving device capable of multidimensional positioning by the single device has a shaft-like driving member 4, an electromechanical transducer 3 which has a plurality of expandable portions 11, 12 and which holds one end of the driving member 4, the expandable portions being provided in parallel so that each of the expandable portions can separately expands and contracts in a axial direction of the driving member 4, and a movable member 5 which frictionally engages on the driving member 4 and which can displace slidingly on the driving member 4, and a drive circuit which applies to some of the expandable portions 11, 12 a low change rate of direct-current voltage component different from that applied to other expandable portions 11, 12, and which applies to all the expandable portions 11, 12 a common alternating voltage component fluctuating with a common period.
摘要:
A rotating device 9 is for rotating a vertically long drivable element 90 about specified two axes (rotation axis A, rotation axis B) and is provided with a first and a second actuators 91A, 91B for giving torques to the drivable element 90, a pivot bearing portion 92 as a rotation supporting point of the drivable element 90, a first and a second position detecting sensors 93A, 93B for detecting the rotational posture of the drivable element 90, and a posture controller 94. Detecting portions 905A, 905B of the first and second position detecting sensors 93A, 93B are arranged on a straight line L1 connecting acting portions 904A, 904B of the first and second actuators 91A, 91B and near the acting portions 904A, 904B. The position of the drivable element can be detected by a simple construction and the drivable element can be quickly returned to an original position.
摘要:
A positioning method for positioning a movable member so as to maximize a detection output of a position detecting means whose detection output varies corresponding to positions of the movable member, comprising: performing a wobbling control when the detection output is small, in which the movable member is moved forward and backward by a predetermined minute amount, and the movable member is moved in proportion to a difference between the detection output when the movable member is moved forward by the predetermined minute amount and the detection output when the movable member is moved backward; and performing a hill climbing control when the detection output is large, in which the movable member is moved in one direction by only a predetermined adjustment amount and when the detection output increases, the movable member is moved again in an identical direction by the adjustment amount.
摘要:
A rotating device 9 is for rotating a vertically long drivable element 90 about specified two axes (rotation axis A, rotation axis B) and is provided with a first and a second actuators 91A, 91B for giving torques to the drivable element 90, a pivot bearing portion 92 as a rotation supporting point of the drivable element 90, a first and a second position detecting sensors 93A, 93B for detecting the rotational posture of the drivable element 90, and a posture controller 94. Detecting portions 905A, 905B of the first and second position detecting sensors 93A, 93B are arranged on a straight line L1 connecting acting portions 904A, 904B of the first and second actuators 91A, 91B and near the acting portions 904A, 904B. The position of the drivable element can be detected by a simple construction and the drivable element can be quickly returned to an original position.
摘要:
An image sensing apparatus is equipped with an anti-shake mechanism. A shake amount of a main body of the image sensing apparatus is detected, and an anti-shake drive signal is generated in accordance with a detected shake amount. The anti-shake drive signal is sent to a plurality of actuators to apply an anti-shake driving force to a driven member provided in an imaging optical system of the image sensing apparatus at different positions from each other. A control axis about which the driven member is driven for anti-shake control extends in a direction different from a drive axis along which the driven member is driven for actual movement.
摘要:
In a truss-type driving apparatus, the amplitude of each displacement member and the phase difference therebetween are detected, and by adjusting the amplitudes or the phases of the impressed voltages to drive the displacement members based on the results of such detection, the elliptical locus drawn by the synthesizing member of the truss-type driving apparatus during driving is adjusted such that the desired driving characteristics are obtained.