Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Compositions substantially free of sodium chloride and methods for the storage of red blood cells
High conductive water-based silver ink
Glass or glass-ceramic pane reflecting infrared radiation
Radiation protective garment with forced ventilation and method
Suspension with flexure having laminated structure and bonding pads on opposing surfaces thereof, and head gimbal assembly and disk drive unit with the same
Image-monitoring method for electroporation treatment and as associated image-monitoring appliance
Detachably integrated battery charger for mobile cell phones and like devices
  Randomly Featured Patents
Latex binders for coatings incorporating a polymerizable surfactant having a terminal allyl amine moiety
Method for correcting the spatial noise of a matrix image sensor
System for improving the flow of gases to a combustion chamber of a coke oven or the like
Erosion resistant coatings and methods thereof
Control apparatus for four-wheel drive vehicle, four-wheel drive vehicle, and control method
Spark ignition engine with cylinder head combustion chamber
Method of changing the page size of a DB2 table space while keeping the object available
Arm switch assembly
Self-adjusting holster particularly adapted for holding implements of a wide range of sizes
Sequence control system