Resources Contact Us Home
Zoom flash with liquid crystal lens

Image Number 9 for United States Patent #7616881.

A camera apparatus (10) has a zoom lens (12) having a zoom focus setting that is adjustable over a range of focus values and control circuitry for generating a variable voltage potential according to the zoom focus setting. A flash illumination apparatus (20) has a light source (32) and a variable focus liquid crystal lens (24), the variable focus liquid crystal lens (24) having a first and a second solid optical element (40, 50), chamber (44), the two electrodes (42, 48) and liquid crystal material (46). A variable voltage is applied to the liquid crystal material (46) for the lens power according to the zoom focus setting.

  Recently Added Patents
JTAG multiplexer with clock/mode input, mode/clock input, and clock output
Display device and projector
Image descriptor quantization
Segmenting video based on timestamps in comments
Wind turbine
EpCAM as a reprogramming factor for non-pluripotent cells
  Randomly Featured Patents
Ceramidase gene
Trigger mechanism for belt pretensioner
Endothelin receptor antagonists
Coefficients setting method of a reverberation unit
Optical element and display device provided with said optical element
Receiver with multiple antennas
Moisture application system for a paper web
Mug holder
Adjustable volume toddler cup
Image identification device, image identification method and recording medium