Patent application number | Description | Published |
20080239137 | IMAGING APPARATUS - An imaging apparatus is provided and includes: an imaging optical system; an imaging device; a drive section that relatively moves the imaging optical system and the imaging device; and a control section that controls the drive section so as to repeatedly drive and stop the drive section during a period between successive times of confirming a relative moving amount of the imaging optical system and the imaging device. | 10-02-2008 |
20090002503 | IMAGE STABILIZATION UNIT, IMAGE STABILIZATION DEVICE, IMAGING APPARATUS, AND MOBILE DEVICE - Convex portions | 01-01-2009 |
20090067827 | MOBILE DEVICE - A mobile device includes a camera module and a magnetism generating part that is different from the camera module. The camera module includes: a movable portion that corrects camera shake; a magnetism detecting element that detects a position of the movable portion. when the camera module is in a photographing state, the magnetism generating part is arranged at a position distant from the magnetism detecting element by at least the distance of D mm or more, where | 03-12-2009 |
20100045139 | DRIVING DEVICE AND OPTICAL APPARATUS - Disclosed is a driving device capable of stably operating a plurality of actuators. | 02-25-2010 |
20100046100 | DRIVING DEVICE AND OPTICAL APPARATUS - A driving device is provided and includes: an actuator that includes a driving shaft attached to a piezoelectric element; and a driving signal control unit. The piezoelectric element is expanded and contracted in response to a driving signal. The driving shaft is reciprocated by the expansion and contraction operation of the piezoelectric element to move a driven member that is frictionally engaged with the driving shaft. The driving signal control unit outputs to the piezoelectric element a second driving signal that increases a driving force applied to the driven member and reduces the movement speed of the driven member during a period from the start of the expansion and contraction operation of the piezoelectric element to a predetermined time, as compared to a first driving signal output when the driven member is moved after the period has elapsed. | 02-25-2010 |
20100270954 | DRIVING APPARATUS, OPTICAL APPARATUS, AND DRIVING SIGNAL CONTROL CIRCUIT - A driving apparatus includes a piezoelectric element which undergoes expansion/contraction motion by a driving signal; a driving shaft which is mounted on the piezoelectric element, and undergoes reciprocating movement according to the expansion/contraction motion of the piezoelectric element; a first movement member which is friction-engaged with the driving shaft, and moves due to the reciprocating movement of the driving shaft; and a first control portion which applies driving signals to the piezoelectric element; the first control portion applies driving control pulse signals when the first movement member is to be moved, and applies stop control pulse signals when the stopped first movement member is not to be moved to put the first movement member into a vibration-arrested state. By this means, the stopped first movement member can be smoothly moved, and the first movement member in motion can be smoothly stopped. | 10-28-2010 |
20100271700 | METHOD FOR DRIVING PIEZOELECTRIC ACTUATOR, PIEZOELECTRIC-ACTUATOR CONTROL CIRCUIT, AND IMAGE-STABILIZATION CONTROL CIRCUIT - Abnormal noise generated while driving a piezoelectric actuator is prevented. A pulse-generation circuit is capable of selectively generating a displacement pulse and a stationary pulse as a drive pulse for application to a piezoelectric element, the displacement pulse having a duty ratio for causing a lens to be displaced by a predetermined step width, and the stationary pulse having a duty ratio for causing the lens to remain stationary in a current position. The pulse-generation circuit controls the production of the drive pulse continuously for a plurality of times within the servo control cycle, causes the displacement pulse to be produced when the remainder of a required amount of displacement is equal to or greater than a threshold value, and causes the stationary pulse to be continuously produced until the initiation of the next servo control cycle when the remainder is less than the threshold value. | 10-28-2010 |
20100271711 | OPTICAL POSITION DETECTING APPARATUS AND OPTICAL APPARATUS - The present apparatus includes: a light emitting portion for emitting a detection-receiving light; a light emitting portion arranged parallel to the light emitting portion for emitting a detection-receiving light; a reflecting plate which is moved relative to the light emitting portions along their parallel arranged direction and also includes an optical pattern where a white area and a black area having a reflectance different from the white area with respect to the detection-receiving lights and are arranged alternately; and a light receiving portion which, according to the light intensities of the detection-receiving lights to be reflected by the reflecting plate, outputs output voltage signals. A controller selects one of the output voltage signals as a position detecting signal and obtains information about the position of a moving lens movable in linking with the reflecting plate. | 10-28-2010 |
20110200312 | MOBILE DEVICE - A mobile device includes a camera module and a magnetism generating part that is different from the camera module. The camera module includes: a movable portion that corrects camera shake; a magnetism detecting element that detects a position of the movable portion. when the camera module is in a photographing state, the magnetism generating part is arranged at a position distant from the magnetism detecting element by at least the distance of D mm or more, where | 08-18-2011 |