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
Shield for vacuum circuit breaker
Method of sheet alignment and method of post-processing comprising the same and method of image formation
Scanning transmission electron microscope and axial adjustment method thereof
Identification of electrical grid phase information for end-points in a grid network
Multi-contoured yoga support
Stacked structure and stacked method for three-dimensional chip
  Randomly Featured Patents
Process for preparing nylon block copolymers
Semiconductor laser device
Procedure and furnace to incinerate waste materials without producing smoke
Hair brush
Constant current source
Track soundproofing arrangement
Hand saw
Illuminated bicycle helmet
Ester compound, agent for controlling noxious organisms containing the same as active ingredient, and production intermediate thereof