Patent application number | Description | Published |
20100085618 | OSCILLATOR DEVICE, OPTICAL DEFLECTING DEVICE AND METHOD OF CONTROLLING THE SAME - An oscillator device including an oscillation system with oscillators and torsion springs, a driving member for driving the oscillation system, and a drive control member for supplying a driving signal to the driving member, the oscillation system having at least a first oscillation mode and a second oscillation mode, the second oscillation mode having an angular frequency approximately n-fold the angular frequency of the first oscillation mode where n is an integer, the driving member driving the oscillation system so that it simultaneously oscillates in the first and second oscillation modes, wherein a natural angular frequency calculating member calculates the natural angular frequency of the second oscillation mode based on an output signal from a photodetector, being outputted at a timing whereat the reflection light passes over the photodetector. | 04-08-2010 |
20100149612 | OSCILLATOR DEVICE AND OPTICAL DEFLECTOR USING THE SAME - An oscillator device includes at least one movable element supported for oscillatory motion around a rotational axis, and a first rectifying member for suppressing generation of a spiral airflow during oscillation of the movable element, the first rectifying member being provided to occupy a space of at least a portion of a spiral airflow generating region which might otherwise be created when the first rectifying member is not provided there. | 06-17-2010 |
20100172006 | OSCILLATOR DEVICE AND OPTICAL DEFLECTOR USING THE SAME - An oscillator device includes at least one movable element supported for oscillatory motion around a rotational axis, and a damper member for applying a damping function to the oscillatory motion of the movable element, the damper member being provided along at least a portion of a locus plane defined by an edge of the movable element during oscillatory motion thereof, so that, based on a viscosity of a fluid which is present between the edge of the movable element and a portion of the damper member opposed to the edge of the movable element, the damping function is applied to applied to the oscillatory motion of the movable element. | 07-08-2010 |
20100214636 | Method of Manufacturing Oscillator Device, and Optical Deflector and Image Forming Apparatus - A method of manufacturing an oscillator device having a fixed member and an oscillation plate supported by the fixed member through a supporting member for oscillation around a torsion axis, the oscillation plate being driven at a resonance frequency around the torsion axis, includes a frequency regulating step based on an extension member for adjustment of a mass of the oscillation plate, for forming the extension member on the oscillation plate and for adjusting the mass of the oscillation plate by cutting a portion of the extension member with the irradiation of a laser beam, an oscillator assembling step for fixing the fixed member to a fixed base, and a driving member assembling step for fixing a driving member for driving the oscillation plate to the fixed base, wherein at least the driving member assembling step is carried out after the frequency regulating step based on the extension member is performed. | 08-26-2010 |
20100302612 | OSCILLATING STRUCTURE AND OSCILLATOR DEVICE USING THE SAME - An oscillating structure includes a supporting member, a first oscillating member, second oscillating member, a first resilient supporting member configured to connect the supporting member and the first oscillating member and to support the first oscillating member for oscillatory motion around the supporting member as a central axis, and a second resilient supporting member configured to connect the first oscillating member and the second oscillating member and to support the second oscillating member movably relative to the first oscillating member, wherein the direction in which the first resilient supporting member extends from the supporting member to the first oscillating member and the direction in which the second resilient supporting member extends from the first oscillating member to the second oscillating member are opposite to each other. | 12-02-2010 |
20110019252 | OSCILLATOR DEVICE, OPTICAL DEFLECTOR AND IMAGE FORMING APPARATUS USING THE SAME - An oscillator device includes a supporting member, an oscillation system having plural oscillators and plural torsion springs, a driving device for oscillating the oscillation system, a drive control device for controlling the driving device, an oscillation detecting device for detecting a state of oscillation of an oscillator of the oscillation system, a resonance frequency calculating device for calculating a resonance frequency of the oscillation system based on an output of the oscillation detecting device, and a control parameter adjusting device for adjusting a control parameter of the drive control device, wherein the control parameter adjusting device adjusts a control parameter based on an output of the resonance frequency calculating device. | 01-27-2011 |
20110019256 | METHOD OF MANUFACTURING OSCILLATOR DEVICE, AND OPTICAL DEFLECTOR AND OPTICAL INSTRUMENT WITH OSCILLATOR DEVICE BASED ON IT - A method of manufacturing an oscillator device having an oscillator supported relative to a fixed member by a torsion spring for oscillation around a torsion axis and arranged to be driven at a resonance frequency, which method includes a first step for determining an assumed value of an inertia moment weight of the oscillator, a second step for measuring the resonance frequency, a third step for calculating a spring constant of the torsion spring, from the assumed value of the inertia moment weight and the measured resonance frequency obtained at said first and second steps, a fourth step for calculating an adjustment amount for the inertia moment of the oscillator or for the spring constant of the torsion spring, based on the spring constant calculated at said third step and a target resonance frequency determined with respect to the resonance frequency of the oscillator, so as to adjust the resonance frequency to the target resonance frequency, and a fifth step for adjusting the resonance frequency of the oscillator to the target resonance frequency based on the calculated adjustment amount. | 01-27-2011 |
20110116145 | METHOD OF MANUFACTURING OSCILLATOR DEVICE, AND OPTICAL DEFLECTOR AND OPTICAL INSTRUMENT WITH OSCILLATOR DEVICE - A method of manufacturing an oscillator device having first and second oscillators being driven at first and second driving resonance frequencies gf1 and gf2, the method including a first step for processing the two oscillators, wherein, when the two oscillators are going to be processed as oscillators having first and second resonance frequencies different from the two driving resonance frequencies with a certain dispersion range, the two oscillators are so processed that the first and second resonance frequencies different from the two driving resonance frequencies become equal to first and second resonance frequencies f1 and f2, respectively, which are included in adjustable resonance frequency ranges, respectively, and a second step for adjusting the first and second resonance frequencies f1 and f2 so that they become equal to the first and second driving resonance frequencies gf1 and gf2, respectively. | 05-19-2011 |