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
Visual voicemail (VVM) recovery
Inhibitors of F18+ E coli binding
Method for determination of numbers of gear steps
AV player
Cardioverter-defibrillator having a focused shocking area and orientation thereof
Circuit switched fallback for mobile terminated calls
Lithium secondary battery with electrode protective layer and initial capacity ratio and manufacturing method thereof
  Randomly Featured Patents
Self-aligned contacts
Capacitive sensor motor control system
Cam for outputting control signals of action fields in response to matches of inputting digital timer signals with data in comparing fields
Wire terminal electrical contact
Magnet knife assembly for a toner developing device
Marine exhaust manifold and header pipe system
Ready-to-assemble chair
Projection display apparatus and display method
Application sharing system which can dynamically change an operating condition of an application program of each terminal from a sole-mode to a share-mode and vice versa