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
Method and device for determining a set of frequencies that can be used for transmitting information between radio transceivers of a network operating with frequency hopping
Reliable and accurate usage detection of a software application
Circuit and method for generating an AC voltage from a plurality of voltage sources having a temporally variable DC output voltage
Noise suppression in speech signals
Ventilated vacuum commutation structure
Method and apparatus for managing backup channel in multi-channel environment
Base station device and wireless communication method
  Randomly Featured Patents
Closure device and method for tissue repair
Collapsible shelter with flexible, collapsible canopy
Method for producing a load sharing arrangement of planet pinions and gears for a Ravigneaux gearset
Helicopter gunship
Integrated circuit comprising a DAC with provision for setting the DAC to a clear condition, and a method for setting a DAC to a clear condition
Breathable elastomeric article
Moisture reduction
Blood, coffee or fruit juice stain remover in an alkaline composition
Regulatory nucleotide sequence of the initiation of transcription