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Match Document Document Title
7355773 Optical scanning apparatus and image forming apparatus using same  
An optical scanning apparatus includes a light source device, a rotating polygon mirror, a first optical system, and a second optical system. The light source device has at least one light emitter....
6735003 Method and apparatus for reducing artifacts in an imaging system  
A method and apparatus for reducing artifacts in an imaging system by directing a stream of air onto the beam deflection assembly of the imaging system. An air displacement system, such as a fan...
6511186 Focus and aim device and method for image projection  
An image projection system includes an image generator, a screen and a focus and aim component. The focus and aim component receives modulated light from the image generator and focuses and...
6185029 Optical scanner and electrophotographic printer employing the same  
An optical scanner comprises a light source, a polygon mirror having plural light deflection faces for deflecting a light flux emitted from the light source, a first optical system for introducing...
6118568 Polygon mirror motor and polygon mirror supporting structure  
A polygon mirror assembly includes a polygon mirror and a supporting stand for supporting the polygon mirror. The supporting stand and the polygon mirror are combined in a pressure joining manner....
6104523 Dual beam double pass raster output scanner  
A dual infrared beam raster scanning system has overfilled facets on the rotating polygon mirror and a double pass through a two cylindrical lens element f-theta lens group. The raster scanning...
6084696 Laser scanning optical system  
Disclosed is a scanning optical system for emitting a scanning beam onto a surface to be scanned. The scanning optical system is provided with a laser source that emits a laser beam, a deflector...
6057953 Dual beam double pass raster output scanner  
A dual infrared beam raster scanning system has overfilled facets on the rotating polygon mirror and a double pass through a two cylindrical lens element f-theta lens group. The raster scanning...
5986793 Optical apparatus  
An optical apparatus has a holder which integrally holds a light source for emitting a divergent beam, and a finite focus lens (or a collimator lens) for converting the divergent beam to a...
5962838 Barcode scanner with manually switchable scan patterns  
A scanner with multiple modes of operation producing two or more distinct scan patterns, with each scan pattern optimized for different modes of operation with a manually actuated switching...
5946124 Laser scanning unit having a noise reducing portion  
A laser scanning unit includes an emitting portion for emitting laser beams, a deflecting portion having a plurality of mirror surfaces at its side portions to deflect the laser beams upon a...
5801870 Light exposure and illuminating apparatus  
A light exposure illuminating apparatus is provided which, employing harmonics of a continuously outputted laser beam, is small-sized, inexpensive and free from speckles and which achieves a high...
5757535 Optical scanner  
An optical scanner in which light beams from a light source are made incident in such a manner as to extend over a plurality of reflecting surfaces of a rotating polygon mirror, comprising: a light...
5621562 Optical Scanning device  
In an optical scanning device, a redirecting flat mirror is provided that redirects a laser flux from a laser source to a polygonal mirror. In order to reduce the size of the optical scanning...
5619363 Laser optical system  
A laser optical system for scanning a laser beam using a rotary polygonal mirror made of plastics. In the laser optical system, a portion close to the edge on the side along the rotary direction of...
5617133 Method and apparatus for adjusting orientation of light beams in a raster scanning system  
A raster scanning optical system and method emits a first light beam and a second light beam onto a light receiving member. A scanning device has at least one facet for reflecting the first and the...
5596444 Optical apparatus having laser beam diameter variable according to image data  
Image data input from a host computer is converted into data BDATA corresponding to a beam diameter at an image control circuit. BDATA is input into a voice coil 21 driving a collimator lens...
5521763 Optical device  
An optical device having an optical element, a base plate which has a mount surface for setting the optical element, a first holding member composed of at least a hole and a projection so as to...
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...
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...
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...
5438446 Uniform reflectance optical mirror  
A uniform reflectance mirror deflector of an optical scanner for scanning a light beam onto an image object or a receiving medium. The scanner includes a rotatable polygon-shaped mirror having a...
5418638 Apparatus for detecting light focus position  
An apparatus is provided for detecting a light focus position of a scanning laser beam on a surface to be scanned. A laser beam splitting member splits part of the scanning laser beam, when the...
5387996 Method of obtaining a narrow field of view scan  
Disclosed is a scanning device (10) having a very fast raster scan and a small angle field of view. The scanning device (10) incorporates a rotating polygon scanning wheel (12) in which a beam of...
5381259 Raster output scanner (ROS) using an overfilled polygon design with minimized optical path length  
In an overfilled ROS polygon system, the total optical path length is minimized by focusing modulated laser beams onto the polygon facets in the cross scan direction by placing a single cylindrical...
5373391 Polygon mirror with embedded yoke  
A polygon mirror is made up of a rotor including a ceramic ring, a yoke and a mirror surface formation member. The yoke and the mirror surface formation member are secured to an outer periphery of...
5343326 Compact ros imaging system  
The pre-polygon scanning path length of a raster output scanning system is reduced by replacing a required cylinder lens, or lenses, with two cylindrical mirrors. One mirror with a negative,...
5340982 Symbol reading device for varying the focal point of a scanning laser beam through variance of scanning laser beam optical path length  
In a symbol reading device, at least two laser beams having different optical path lengths, and, therefore, different focal positions are used to scan a symbol surface. The two laser beams are...
5317444 Light scanning apparatus  
An optical scanning apparatus of the present invention is for optically scanning a medium. In the optical scanning apparatus, a light source receives image information and emits light beam...
5301060 Optical element  
A mirror which is incorporated in an optical device and is made of plastic, comprising: an effective portion which has a constant thickness and a reflecting surface; and a reinforcing portion which...
5293266 Optical beam scanning apparatus  
An optical beam scanning apparatus wherein a resin polygonal scanner deflects a light beam radiated from a laser diode as the polygonal scanner is rotating. The polygonal scanner is pressed by a...
5267075 Optical unit for use in laser beam printer apparatus  
An optical unit includes a primary lens for converging a laser beam L emitted from a semiconductor laser element, a cylindrical lens for further converging the converged laser beam, and first and...
5245481 Optical unit and method of fixing optical elements in optical unit  
This invention relates to a device and a method for securing optical elements to a housing. The optical elements such as a tertiary lens, a fourth lens, a reflecting mirror, and a filter glass are...
5239403 Optical deflector device for deflecting laser beam  
An optical deflector is employed in an optical unit incorporated in a laser beam printer. The optical deflector reflects a laser beam, which is generated by a laser diode toward a photosensitive...
5233454 Image forming reflecting mirror for constant speed optical scan and optical scanner  
In an image forming reflecting mirror for a constant speed optical scan, a light beam is convergent in a cross scan-corresponding direction with a point near a starting point of deflection as a...
5221986 Scanning image-forming lens system and optical scanner  
A scanning image-forming lens system is constructed by two lens groups composed of first and second lenses sequentially arranged from the side of a rotary polygon mirror to the side of a scanned...
5212581 Microfilm scanning apparatus  
A microfilm scanning apparatus of the entrance scanner type has a microfilm, normally mounted in an aperture card which is mounted on a curved surface of a plano-convex cylindrical lens platten....
5206755 Optical beam scanner  
An optical beam scanner capable of correcting irregularities in pitch of beam scanning as caused by inclination or angular deviations of reflective deflection surfaces of a deflector, the scanner...
5206754 Moisture condensation prevention structure for laser scanning optical system  
In a laser scanning system employed in an electrophotographic image forming apparatus there are provided a polygon mirror moveably driven in order to enable a laser beam to repeatedly scan a...
5202569 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Symbol reading device for varying the focal point of a scanning laser beam through variance of scanning laser beam optical path length  
In a symbol reading device, at least two laser beams having different optical path lengths, and, therefore, different focal positions are used to scan a symbol surface. The two laser beams are...
5194994 Mirror installation in an optical device  
Structure and method for mirror installation in an optical device such as a laser beam scanning device. An installation reference surface and a support surface are formed to be faced to but spaced...
5193013 Scanner with non-linearity compensating pixel clock  
A scanner system includes a light source for producing a light beam and a scanner for directing the light beam to a spot on a surface to a be scanned and for moving the spot across the surface...
5191463 Scanning optical system in which a ghost image is elminated  
A scanning optical system is provided with a deflector for deflecting a light beam, a medium to be scanned by the light beam deflected by the deflector, and an imaging optical system disposed...
5184246 Scanning of moving objects using unique polygon mounted on carousel which rotates at twice polygon's speed  
A polygon for reading and writing information, and for tracking industrial products on a rotating carousel is arranged so that each of its sides behaves effectively like a mirror mounted directly...
5182668 Optical beam scanning system having an image-forming system for reshaping a light beam to be applied to a scanning reflector  
A first image-forming system includes first and second lens systems which are disposed from a light source to a deflector respectively. The first lens system has a positive power along a second...
5179465 Optical system for light beam scanning  
A scanning optical system used for light beam scanning device is disclosed. The scanning optical system is disposed between a deflector for deflecting a light beam and a plane to be scanned. In the...
5177632 Tracking system using a polygon of unique dimension or arbitrary polygon combined with sensors  
A polygon (FIGS. 4to 6) has unique physical dimensions, i.e., its radius (R8') is correlated to a tracking radius (R13')(where objects are scanned) by a rule which creates an improved linear...
5173798 Beam scanning apparatus with sensor for detecting beam position  
A beam scanning apparatus comprises: a beam source for generating optical beam; a polygon mirror for deflecting the optical beam to scan a beam receiving surface; a beam receiving device, arranged...
5151811 Light deflecting apparatus  
A light deflecting apparatus has an optical box carrying a light source unit for emitting a light beam, a light deflecting unit and an optical system for converging the light beam deflected by the...
5149969 Infrared surveillance device  
An infrared thermographic optical scanner is comprised of a first optomechanical device fitted with an entrance objective, at least a raster scan element, and a plane of infrared detectors on which...
Matches 1 - 50 out of 251 1 2 3 4 5 6 >