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
Printer driver, printer control method, and recording medium
Disk-based storage device having read channel memory that is selectively accessible to disk controller
Image processing apparatus, image processing system, and image processing method
Method to dynamically tune precision resistance
Non-phosphorus-based gellant for hydrocarbon fluids
Haworthia plant named `CAPETOWN`
Imaging lens having five lens elements, and electronic apparatus having the same
  Randomly Featured Patents
Optical waveguide grating coupler
Super capacitor charging
Amplifier circuit
Head-mounted device for supporting breathing circuit tubes and sensor
Apparatus for sterilizing a medical unit
Method of manufacturing a multimetallic article
Collapsible building block for erecting toy buildings that fall down flat
Lawn mower
Aircraft wing heat exchanger apparatus and method