Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Two dimensional laser scanner with movable cylinder lens










Image Number 6 for United States Patent #4070089.

An intensity modulated laser beam is directed to a rotating scanner having a plurality of facets which scans the beam across the surface of a movable mirror in a first scan direction. The mirror is movable in a manner whereby the beam is deflected in a second scan direction. The light reflected from the movable mirror is directed through a focusing lens onto a movable cylinder lens located adjacent the platen which is movable in a direction corresponding to the second scan direction, thereby providing two-dimensional scanning of a document. In one embodiment, the movable mirror and the movable cylinder lens are driven by a single motor and are coupled together in the manner whereby the movement thereof is mechanically interlocked thereby providing perfect tracking of the scanned laser beam within the clear aperture of the cylinder lens. In a second embodiment, the movable mirror and the movable cylinder lens may be independently driven and interlocked electronically. By proper focusing of the laser beam such that the sagittal focal plane is located between the movable mirror and the rotating scanner, a compromise of sagittal motion compensation due to pyramidal errors of the scanner facets and sagittal angular variations of the movable mirror is achieved. The rotating scanner may also be tilted in a predetermined manner whereby unsymmetrical scan linearity in the first scan direction upon each side of the scan line center is minimized.








 
 
  Recently Added Patents
Switching device and electronic apparatus using the same
Method of synchronization for low power idle
Non-intrusive processor tracing
Bio-pesticide and method for pest control
Mirror elements for EUV lithography and production methods therefor
Mold for nanoimprinting, its production process, and processes for producing molded resin having fine concavo-convex structure on its surface and wire-grid polarizer
Device chip carriers, modules, and methods of forming thereof
  Randomly Featured Patents
Stroller transporting device
Systems and methods for providing authentication credentials across application environments
Heat resistant container molding method
Data transmission system
Monolith supporting structure for use in catalytic converter
Shower control assembly escutcheon
Circulatory assist device
Saccharin derivatives
Detection and display device
Door closer