Resources Contact Us Home
Illumination device and method using adaptable source and output format

Image Number 11 for United States Patent #7554737.

Systems and methods for providing illumination suitable for imaging devices such as laser projection systems, wherein the illumination pattern is adjustable by modifying one or more characteristics of a controlled angle diffuser. In one embodiment, a highly collimated (e.g., laser light) beam is passed through a holographic diffuser to create a well defined cone angle for the light emanating from each point on the diffuser. This light is focused into an illumination image that is controlled by the prescription of the diffuser. In one embodiment, the diffuser can be positioned to alternately place different regions having different prescriptions in the optical path corresponding to the illumination image. In one embodiment, the diffuser can be continually moved to eliminate speckling and "worminess" in the illumination image.

  Recently Added Patents
Stage drive method and stage unit, exposure apparatus, and device manufacturing method
Automobile body
Image capture and identification system and process
Circuit arrangement having a load transistor and a voltage limiting circuit and method for driving a load transistor
Method for transitioning between Ziegler-Natta and metallocene catalysts in a bulk loop reactor for the production of polypropylene
Pressure-sensitive adhesive composition for optical films, pressure-sensitive adhesive optical film and image display
Apparatus and method for providing vehicle data for testing product
  Randomly Featured Patents
Gemcitabine prodrugs, pharmaceutical compositions and uses thereof
Non-killing cartridge
Method of manufacturing an orbiting scroll in a scroll fluid machine
Method of shallow trench isolation using a single mask
Methods of managing and accessing e-mail
System and method for managing virtual world environments based upon existing physical environments
Middle ear pressure equalizing device with improved pressure control
Stable current source
Surgical adhesive
Diffusion code generator, CDMA communication apparatus using the same, and diffusion code generating method used therefor