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
Vacuum cleaner filter adapter ring
Tree drain grate
Stepped delay control of integrated switches
Laser protection polymeric materials
Resistive memory element sensing using averaging
System for seeking for an optimal configuration of a bi-, tri- or multi-ventricular cardiac resynchronization implanted device
  Randomly Featured Patents
Peer-to-peer communications
Apparatus and method for determining water dew point
Ring count controlled by incoming call related information
Method and device for displaying sewing processes
Engine charge forming apparatus
Grill box
Ignition system for a two cycle engine
Detergent bar
Battery with side wall ribs
Floating turntable for vehicles