Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Multi-beam zoom lens for producing variable spot sizes for a laser printer










Image Number 8 for United States Patent #6476962.

A multi-beam zoom lens for producing variable spot sizes on a photosensitive medium from a plurality of individually modulated light sources wherein each light source emits a light beam parallel to each of the other light sources and parallel to an optical axis and wherein a numerical aperture of each of said light beams is greater than 0.125, comprising an afocal zoom lens (10). The afocal zoom lens comprises a first moving group of lenses (13), a second group of moving lenses (14), and a third group of moving lenses (15). A constant barrel length of the afocal zoom lens is less than 160 mm and the zoom lens has a constant distance from the light sources to the photosensitive medium of less than 180 mm. The zoom lens has an afocal magnification of at least 45% across a zoom range.








 
 
  Recently Added Patents
Method for spore detection
Flexible circuit routing
Horizontal cable manager
Bicyclic azaheterocyclic carboxamides
Method and system for remotely testing a wireless device
Compound semiconductor device and manufacturing method therefor
Flash multi-level threshold distribution scheme
  Randomly Featured Patents
Strain gauge plethysmograph
Photovoltaic cell on substrate
Method and apparatus for monitoring an aspirating and dispensing system
Toner for electrostatic latent image developing and manufacturing method of same
Photographic film processing rack and method of assembling the same
Seam forming apparatus
2,2,6,6-Tetramethylpiperidine derivatives
Modular paint oven using radiant and convection heat
System and method for automatically setting applet latest version
Drawbar coupler