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5561545 |
Rotary polygon mirror
A rotary polygon mirror has reflecting mirror faces formed at side faces of a prism of a predetermined height, and includes an axially symmetrical projection formed along at least parts of outer...
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5559627 |
Optics for passive facet tracking
A passive facet tracking system using passive optical components to induce a beam of light to track a facet of a rotating mirror polygon. The properties of the passive components are such that they...
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5557449 |
Laser beam scanning apparatus for controlling diameter of light spot
A laser beam scanning apparatus includes: a light source unit for emitting a collimated laser light beam; a rotary deflector unit for deflecting a laser light beam from the light source unit; a...
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5557438 |
Scanning and tracking using rotating polygons
A system for scanning or tracking, which includes a polygon rotatable about a rotational axis. The system further includes a fixed radiation source directing radiation at the polygon along a path...
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5555125 |
Optical scanner
Optical scanner having a laser source for generating a laser beam, a first deflector for deflecting the laser beam towards an array of reflectors, the first deflector and the array of reflectors...
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5555123 |
Flying spot scanner
A moving mask is incorporated in a flying spot scanner to reduce flare. The mask obscures all portions of the object being scanned, except for a small region surrounding the point currently being...
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5546216 |
Optical scanning system
An optical scanning system which converges light flux on a photoconductive member by an optical scanning lens after the light flux from a light source is coupled by a coupling lens (a condensing...
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5541761 |
Optical beam scanning apparatus adjusting focal point over entire image forming area by feedback control
In an optical beam scanning apparatus having an electrooptic lens, a focal point of a light beam is adjusted to be exactly positioned on a scanning surface by a feedback control at any positions...
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5539719 |
Light beam deviation detecting device used in an image forming apparatus
A light beam deviation detecting device for detecting deviation of parallel light beams which simultaneously scan a photoreceptor in a primary scanning direction of the parallel light beams. The...
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5532866 |
Polygonal mirror and manufacturing method thereof and light beam scanning optical apparatus using the polygonal mirror
A light beam scanning optical apparatus which deflects a light beam emitted from a light source with a polygonal mirror and scans the light beam on a photosensitive member through an fθ optical...
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5532730 |
Light beam scanning apparatus
A light beam scanning apparatus for recording an image on a photosensitive material by scanning with an light beam having image information of the image. The apparatus includes a cylinder for...
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5530579 |
Laser beam optical scanning device
A laser beam optical scanning device which has a laser diode, a collimator lens, a cylindrical lens, a polygonal scanner and an f θ lens. The polygonal scanner is made of resin, and when the...
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5528412 |
Optical beam scanning apparatus
An optical beam scanning apparatus which includes: an optical modulator which emits an optical beam in a direction corresponding to the frequency of an inputted signal; scanning device for scanning...
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5521739 |
Raster output scanner for reducing color misregistration
There is disclosed a raster output scanner for a color printing system which utilizes an indexed rotating polygon mirror in order to scan each given scan line from each latent image by a given...
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5515198 |
Optical active matrix display
An optical active matrix display uses a light beam through a plurality of lightguide paths in a transparent substrate for switching signals to display an image. The display includes end surfaces of...
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5510826 |
Optical scanning apparatus
In an optical scanning apparatus, a light beam emitted from a light source is collimated and is incident on a reflecting surface of a deflector via stop member. The deflector deflectively reflects...
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5506719 |
Optical scanning device
An optical scanning device for leading a laser beam emitted from a semiconductor laser diode through a collimator lens, an imaging lens, and a cylindrical lens to a plurality of reflecting surfaces...
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5506718 |
Scanning optical apparatus
A scanning optical apparatus has a source (1) of light for producing a light beam as a light flux (5) in a given direction, a polariscope (2) for polarizing the light flux (5) of the light beam in...
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5504613 |
Optical scanner
In an optical scanner, a light beam from a light source device is formed by a linear image forming optical system as a linear image extending in a main scan-corresponding direction. The light beam...
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5498869 |
Apparatus for wobble correction using an agile beam polygon ROS and all-spherical optics
Facet-to-facet pyramidal wobble is corrected without resorting to cylindrical optics by adapting agile beam concepts to provide real-time control of the light beam position on the photoreceptor....
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5497252 |
Internal drum plotter with multiple focal point holographic optical element
An internal drum plotter in which a multiple focal point holographic element receives respective modulated light beams, one for each focal point, to focus the light beams on a light sensitive...
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5493388 |
Distance measuring device
A distance measuring device of laser beam using type has a laser diode for producing laser beams. A scanning mechanism projects the laser beams against an object and includes a polygon mirror to...
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5488502 |
Light beam scanning device and image formation lens
In a laser beam-scanning apparatus equipped with a rotatable polygonal mirror and an image formation lens system, a lens of the lens system has a cylindrical surface curved in the secondary...
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5486945 |
Optics for passive facet tracking
A passive facet tracking system using passive optical components to induce a beam of light to track a facet of a rotating mirror polygon. The properties of the passive components are such that they...
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5483054 |
Converging position detecting apparatus with a single photodetecting element
A single photodetecting element, in front of which a knife edge is placed, is disposed in front of a scanning surface and outside a laser beam scanning region for the scanning surface. Two mirrors...
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5479583 |
Means to achieve a square intensity profile at an image plane by intensity and phase profiling
An optical system is disclosed which utilizes a pair of binary diffraction optic lenses to reprofile the intensity and the amplitude distribution profiles of a light beam prior to a rotating...
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5477374 |
Optical beam scanning apparatus
An optical beam scanning apparatus which includes: an optical modulator which emits an optical beam in a direction corresponding to the frequency of an inputted signal; scanning device for scanning...
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5477373 |
Laser beam optical scanning device
A laser beam optical scanning device including a housing, a light source for emitting a unidirectional laser beam, polygonal mirror for deflection scanning a laser beam emitted from the light...
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5477372 |
Optical scanner
An optical scanner for use with laser printers and the like. In the optical scanner, a semiconductor laser device is combined with an aperture and a collimator lens which is one single spherical...
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5475524 |
Optics for passive facet tracking and passive scan angle doubling
A passive facet tracking scan angle doubling system using passive optical components to induce a beam of light to track a facet of a rotating mirror polygon and to increase the scanning angle...
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5475522 |
Optical scanner
An optical scanner has a light source device for emitting a light beam for performing an optical scanning operation; a cylindrical lens system for converging the light beam from the light source...
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5469290 |
Two-element zoom lens for beam separation error correction
A raster output scanner is disclosed which utilizes a spot separation error correction system prior to its rotating polygon mirror. The spot separation error correction system of this invention is...
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5463490 |
Light beam deflecting device
In a light beam deflecting device for deflecting a laser beam by using a rotary polygon mirror, the rotary shaft of the rotary polygon mirror is rotatably supported by a plurality of ball bearings...
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5461505 |
Polygon mirror
A polygon mirror includes a polygon base having a plurality of attaching surfaces, a plurality of base plates each of which is fixed to each of the attaching surfaces of the base and has a...
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5461498 |
Light scanning device
In a preferred mode of a light scanning device, a reflection mirror is designed in an inverted cup-shaped form and has a hexahedral means portion at the outer side thereof and a bearing at the...
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5457567 |
Laser scanner having improved frequency characteristics
A laser scanner is disclosed, in which M, the lateral magnification obtained from the first and the second optical members, V 1 , the scanning velocity of the scanning beam on the beam receiving...
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5457550 |
Optical scanner unit having recursive optical system
An optical scanner unit for scanning a document includes a laser unit for emitting a laser beam used for scanning the document, an optical system in which the laser beam emitted from the laser unit...
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5455706 |
Mirror-moving system
A mirror-moving system having a mirror mounted on a support member able to be repulsed by a superconductor, the mirror being suspended above a superconductive material and a ferromagnetic material...
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5444239 |
Fiber optic scanning beam detector
A fiber optic system is used in a laser ROS scanning system to generate a start of scan signal. In one embodiment, a single optical fiber is positioned at the beginning of a scan line sweep. The...
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5442171 |
Optical system including provisions for correcting scanning beam spot displacements due to changing ambient conditions
A beam spot detector is disposed on an extension of a surface to be scanned by a beam of light. The beam spot detector has a mask in front thereof, the mask having a side which the beam of light...
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5438450 |
Optical scanning apparatus
In an optical scanning apparatus, a light beam from a light source is deflected by a deflector and the deflected light beam is converged on a scanning surface by an optical system. The light beam...
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5438449 |
Beam pointing switch
An optical beam switch is disclosed for sequentially pointing a laser beam to a plurality of terrestrial target locations at predetermined depression angles and at angular positions relative to a...
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5438448 |
Turning mirror and method of manufacture
The present invention discloses the construction and manufacturing method of a turning mirror which has a single face or multiple face reflector mirror for scanning laser light in a laser beam...
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5434696 |
Active energy diametric scanning
A method and a device for diametric active scanning of a forward region using a collimated beam of radiation energy to detect and track target objects by collecting beam energy scattered by the...
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5430571 |
Rotary mirror system
A rotary mirror system for angularly deflecting a light beam including an air bearing arrangement rotatably supporting a mirror body on which one or more mirror facets are provided, the mirror body...
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5430570 |
Light deflector
The present invention provides a light deflector which effectively cools a rotation torque generation portion, which leads to miniaturization of the apparatus and economy of electric power. The...
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5422753 |
Binary diffraction optical element for controlling scanning beam intensity in a raster output scanning (ROS) optical system
A binary diffractive optical element provides uniform intensity for the scanning beam of a raster output scanning (ROS) optical system by diffracting the excess intensity of the beam.
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5420713 |
Optical scanner
An optical scanner that includes: a rotating polygon mirror for scanning by deflecting a light beam for writing a latent image on a photosensitive body in a predetermined direction; a rotating...
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5418639 |
Light beam scanning device
A light beam scanning device in which two image formation lenses are disposed between a rotational polygonal mirror to reflect a light beam sent from a laser beam source, and a surface to be...
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5408352 |
Optical scanner
Optical scanner, comprising a laser source for generating a laser beam, a first deflector for deflecting the laser beam towards a array of reflectors, the first deflector and the array of...
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