Resources Contact Us Home
Multi-beam zoom lens for producing variable spot sizes for a laser printer

Image Number 6 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
Vehicle battery with cell balancing current paths and method of charging the same
Electronic device, information processing method, and storage medium
Camera system, video processing apparatus, and camera apparatus
Gaze tracking password input method and device utilizing the same
Asynchronous distributed de-duplication for replicated content addressable storage clusters
Method and apparatus for predicting object properties and events using similarity-based information retrieval and modeling
Method, base station and system for adjusting cell wireless configuration parameter
  Randomly Featured Patents
Blood pressure measuring apparatus
Techniques for controlling a fin with unlimited adjustment and no backlash
4-Aminoquinazoline compounds useful as agricultural fungicides
Air recuperator cleaner
Load balancing for multi-threaded applications via asymmetric power throttling
Apparatus for enhancing absorption and dissipation of impact forces for sweatbands used in connection with helmets
Dispensing system and method for dispensing an aqueous solution
Display illuminating structure
Motorcycle with outrigger wheels
Flat cable connector