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7619801 |
Two-element f-θ lens used for micro-electro mechanical system (MEMS) laser scanning unit
A two-element f-θ lens used for a micro-electro mechanical system (MEMS) laser scanning unit includes a first lens and a second lens, the first lens is a biconvex lens and the second lens is a...
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7619798 |
Optical deflector and light beam scanning apparatus having a control mechanism utilizing electromechanical transducers for adjusting resonant frequency for stable scanning
An optical deflector and a light beam scanning apparatus characterized by stable amplitude and speed wherein the fluctuation of the resonant frequency resulting from various factors such as a...
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7609426 |
Image scanning apparatus
An image scanning apparatus for embodying an image using visible lights apparatus includes a scanning unit for irradiating line scan light; a power source for generating voltage for driving the...
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7605966 |
Optical deflector
An optical deflector includes a mirror having a reflective plane; a torsion bar extending outwardly from an end of said mirror; a support surrounding said mirror; a first piezoelectric element, one...
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7605965 |
Optical deflector
An optical deflector includes a mirror having a reflective plane; a torsion bar extending outwardly from a side of said mirror; a support surrounding said mirror; a piezoelectric cantilever...
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7605368 |
Vibration-type cantilever holder and scanning probe microscope
A vibration-type cantilever holder holds a cantilever opposed to a sample. The holder supports a main body part of the cantilever at only its base end so that a probe at the free end of the...
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7595924 |
Bracket for piezoelectric drive torsional hinge mirror
A combination pivoting mirror and support bracket has a bracket for supporting a pivoting mirror assembly and for attaching the combination to a using device. The bracket has first and second...
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7586660 |
DC brushless motor, light deflector optical scanning device, having an increased efficiency to reduce power consumption and heat generation using exactly six poles and stator with nine teeth and corresponding coils
A light deflector is disclosed that includes a bearing, a motor, a rotary body supported by the bearing and rotated by the motor, and a polygon mirror fixed to the rotary body. The motor includes...
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7586659 |
Audio MEMS mirror feedback
A mirror device and a method for audio feedback of a MEMS mirror device are presented. The mirror device includes a mirror with a reflective surface located to intercept a modulated beam of light...
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7573627 |
Amplified bimorph scanning mirror, optical system and method of scanning
An amplified bimorph scanning mirror for use in various optical systems, an optical coherence tomography scanner incorporating the amplified bimorph scanning mirror, and a method for manufacturing...
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7573626 |
Optical scanner and image display apparatus having the same
Provided is an optical scanner for observing an image that is formed by performing two-dimensional scanning with the aid of a swinging movable mirror, using light beams modulated on the basis of...
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7573625 |
Multiharmonic galvanometric scanning device
A scanning apparatus for a printer or similar instrument. A multiharmonic oscillator is used to provide a composite motion of a laser beam or other light beam to scan an imaging surface. The...
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7570406 |
Actuator, optical scanner, and image forming apparatus
An actuator includes: a first vibration system including a driving member having a frame shape, and a pair of first axial members each one end of which supports the driving member so as to allow...
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7567367 |
Micro-mirror device and array thereof
A micro mirror device and an array thereof are disclosed wherein an outer frame is formed at a position distanced from a mirror plate, thereby reducing a dynamic deformation of the mirror plate,...
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7557976 |
Light scanning apparatus and method to prevent damage to an oscillation mirror, reducing its amplitude, in an abnormal control condition via a detection signal outputted to a controller even though the source still emits light
A light scanning apparatus includes a deflector having an oscillation mirror that oscillates about an axis that is orthogonal to a main scanning direction. A detector detects a scanning light beam...
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7551339 |
Optical scanning apparatus, optical writing apparatus, image forming apparatus, and method of driving vibration mirror
An optical scanning apparatus includes a vibration mirror having a mirror surface that reflects an optical beam. A pair of torsion beams swingably support the mirror. The mirror is vibrated in a...
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7542188 |
Optical scanning using vibratory diffraction gratings
An optical scanning apparatus includes an in-plane vibratory mass platform having at least one diffraction grating formed thereon as the scanning element, at least one flexure structure that...
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7542187 |
Image forming apparatus, control method therefor, and computer program
An image forming apparatus which forms an image by scanning a light beam in a main-scan direction of a photosensitive member, the apparatus including: an output unit which irradiates a light beam...
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7538923 |
Light deflecting method and apparatus efficiently using a floating mirror
Method of deflecting light includes the steps of providing a substrate and forming a supporting member on the substrate. Next forming step forms electrodes at predetermined positions on the...
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7499204 |
Optical scanning apparatus, control method thereof, and image forming apparatus
The light beam deflection cycle of a rotational polygonal mirror includes first and third sections in which a latent image is not formed, and a second section in which the latent image is formed. A...
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7492495 |
Optical scanning apparatus and scanning image display apparatus
An optical scanning apparatus in which keystone distortion non-linearity distortion in a projected image can be excellently corrected is provided. An optical scanning apparatus has light source...
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7483192 |
Device and method for the optical scanning of media, objects, or areas
A device for optically scanning media or objects includes a mirror which deflects light beams and is coupled to a drive unit. The deflection mirror can be rotated with a mirror normal being tilted...
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7480087 |
Apparatus for and method of forming images with oscillation mirror
An image forming method which generates a video signal corresponding to an image forming command based on a video clock signal, modulates a light beam according to the video signal, and scans the...
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7474165 |
Oscillating device, optical deflector and optical instrument using the same
Disclosed is an oscillating device that includes an oscillating system having a plurality of oscillation movable elements, a plurality of elastically supporting portions connected to the...
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7468824 |
Imaging apparatus including optical scanning device with deflecting mirror module, and method of deflecting with the mirror module
A module configured to deflect light in an image forming apparatus. A torsion bar supports a mirror and defines a rotational axis of the mirror. A controller is configured to apply electronic...
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7426066 |
MEMS scanning mirror with tunable natural frequency
In one embodiment of the invention, a MEMS structure includes a first electrode, a second electrode, and a mobile element. The first electrode is coupled to a first voltage source. The second...
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7420724 |
Scanner apparatus having electromagnetic radiation devices coupled to MEMS actuators
A disclosed scanner apparatus includes a member having spaced apart proximal and distal portions. An electromagnetic radiation device is configured to direct electromagnetic radiation therefrom and...
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7420721 |
Oscillation scan mirror with magnetic retaining force acting between the holder and shaft to prevent relative tilt between shaft and bearings
An improved oscillation scan mirror assembly comprises a shaft, a holder having a bearing with a bearing surface supporting the holder on the shaft, a scan mirror secured to the holder. The holder...
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7420449 |
Mirror actuating device for projection systems
A magnetic actuator utilizes a single magnet and two voice coils to rotate a mirror between two angular positions with respect to a rest state. A magnetic field assembly applies magnetic flux...
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7417779 |
Single piece torsional hinged device with central spines and perimeter ridges to reduce flexing
A torsional hinged device having an optical surface, such as a mirror or refractive surface, formed from a single piece of silicon with reduced flexing. In addition to central spines to prevent or...
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7365613 |
Method of determining resonant frequency
A method for operating a torsion oscillator at its resonant frequency. The method performs an open-loop frequency sweep starting with nominal operation parameters saved from the factory or from a...
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7362488 |
Tiltable-body apparatus, and method of fabricating the same
The tiltable-body apparatus including a frame member, a tiltable body, and a pair of torsion springs having a twisting longitudinal axis. The torsion springs are disposed along the twisting...
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7359102 |
Driving method for galvano scanner
A galvano scanner system has a galvano scanner and a scanner driver for driving the scanner, wherein a microcomputer for generating commands in which digital data representing a drive pattern of...
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7352499 |
Arrangement for and method of projecting an image with pixel mapping
A laser beam is swept by a scan mirror as a pattern of scan lines on a projection surface. The scan mirror moves at a variable speed along each scan line. Each scan line has a number of pixels. The...
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7349145 |
Optical deflection device and image projection display apparatus using the same
An optical deflection device includes a substrate; a plurality of regulating members including upper portions including stoppers; a fulcrum member serving as an electrode; a plate member; and a...
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7324251 |
Micro-actuation element provided with torsion bars
The micro-actuation element (X 1 ) includes a movable unit ( 111 ), a frame ( 112 ) and a coupler ( 113 ) for connecting these, where the unit, the frame and the coupler are integrally formed in a...
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7324250 |
Image forming apparatus
Disclosed is an image forming apparatus capable of keeping an oscillation angle of an oscillating mirror at a constant value based on control of a drive frequency. In this image forming apparatus,...
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7310174 |
Method and apparatus for scanning regions
A beam scanner is operable to scan light in two or more axes, typically in a raster pattern that includes a fast scan axis and a slow scan axis. Plural beams of light are scanned, each beam of...
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7262895 |
Determining operating point of feedback controller applied to operation of oscillating scanning device
A method for determining an operating point of an oscillation controller. The method builds a model of an oscillation device based upon its design parameters. Then the resonant frequency of each...
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7262894 |
Method for aligning bi-directional images in a mirror display
A mirror display system comprising a multiplicity of scan lines that are combined to generate an image. The multiplicity of scan lines are orthogonally positioned in response to a slow speed cyclic...
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7259900 |
Multilayer torsional hinged mirror with a recessed drive/sensing permanent magnet
A multilayered torsional hinged mirror assembly that includes a drive/sensing permanent magnet. To allow for permanent magnets having increased thicknesses, a hinge plate of the mirror defines a...
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7245412 |
On-the-fly laser beam path error correction for specimen target location processing
A laser-based workpiece processing system includes sensors connected to a sensor controller that converts sensor signals into focused spot motion commands for actuating a beam steering device, such...
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7239437 |
Reduction of open loop jitter and control loop stabilization of a torsional hinged device by structural optimization
Apparatus and methods for removing jitter and stabilizing the feed back system of a torsional hinged device with minimal changes to the system. The stabilization is accomplished by spatially...
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7233424 |
Steering assembly with electromagnetic actuators
A laser cutting system, including a steering mirror assembly for directing a laser beam through a predetermined cutting path along a workpiece or substrate material. The steering mirror assembly...
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7197815 |
Method of manufacturing the electromagnetic actuator
An electromagnetic actuator comprises a core with a coil wound around a stator magnetically coupled to each end of the cored a movable element that can be displaced relative to the stator, and a...
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7167290 |
Optical deflection device
An optical deflection device is disclosed that is able to drive a mirror therein to move smoothly. In the optical deflection device, notches are formed in the mirror, and when the notches hit...
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7148591 |
Oscillating device
To provide a small-size oscillating device, a coil is disposed on a substrate.
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7138622 |
Method and apparatus for monitoring light beams
An apparatus and method for monitoring light beams comprising a reflector for passing at least partially through the beam to reflect a sample of the beam and at least one sensor arranged to receive...
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7135804 |
Micro-mirror with rotor structure
A micro-mirror device includes a stator structure having a set of radial stator electrodes, a rotor structure having a set of radial rotor electrodes, a mirror mounted on the rotor structure, and a...
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7130095 |
Correcting for image distortion in image projectors
An arrangement for, and a method of, correcting for image distortion in an image projection system include making the scan lines of the projected image all of the same length by adjusting the...
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