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
Enhancement of semiconducting photovoltaic absorbers by the addition of alkali salts through solution coating techniques
System and method for performing image correction
Particles with high surface charge for crystalline colloidal arrays
Weight-balanced polygonal mirror, light scanning unit using the polygonal mirror, and image forming apparatus
System and method for detecting executable machine instructions in a data stream
System for seeking for an optimal configuration of a bi-, tri- or multi-ventricular cardiac resynchronization implanted device
Method for transferring inventory between virtual universes
  Randomly Featured Patents
Micromachined silicon electrostatic chuck
Prosthesis for bridging a vertebral body
Class-D amplifier
Optimized scalar promotion with load and splat SIMD instructions
Electric dust collecting apparatus
Protective ear covering device
Fence climber
Apparatus for road surface repair with fiber-reinforced asphalt
System and method for generating new concepts based on existing ontologies