Resources Contact Us Home
Laser beam optical scanning device

Image Number 2 for United States Patent #5477373.

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 source within a single plane, and optical members for directing the deflected scanning laser beam on the surface of a photosensitive member through a beam emission aperture of the housing. A transparent member is provided at the beam emission aperture of the housing so as to satisfy the following equation: ##EQU1## where X:distance (mm) from transparent member to surface of photosensitive member,.lambda.:laser beam wavelength (mm),D.sub.0 :beam diameter (mm) at center intensity 1/e.sup.2 on surface of photosensitive member.

  Recently Added Patents
Rechargeable battery
Control device of hybrid vehicle
Imaging apparatus having selection unit to select focus detection areas
Light emitting device
Photovoltaic system with integrated photovoltaic panel and battery
Display system, display control method and computer program
Inductive signal transfer system for computing devices
  Randomly Featured Patents
Basket for domestic centrifuge and process for the manufacture of such a basket
Lens system with frontal aperture stop
Time adjusting means for electronic timepiece
Nondestructive electromagnetic inspection of pipelines incorporated in an electrically closed loop
Fluid ejection devices and methods of fabrication
Film having transmissive and reflective properties
Organopalladium approaches to prostaglandins
Financial cabinet apparatus for a gaming machine
Automatic leveling apparatus for use with vehicle headlamps
Thermoelectric and pyroelectric energy conversion devices