Resources Contact Us Home
Zoom lens system, imaging device and camera

Image Number 10 for United States Patent #7319563.

An object is to provide a high-resolution zoom lens system which has fewer lens elements and therefore, can be retracted into a compact form when not in use; and the zoom lens system, in order from the object side, comprises a first lens unit G1 having negative power, a second lens unit G2 having positive power and a third lens unit G3 having positive power, wherein magnification is varied with change in intervals between each lens unit by independently moving each lens unit along an optical axis, in which the first lens unit G1 comprises one negative lens element L1 and one positive lens element L2, the second lens unit G2 comprises only a cemented lens element having set of three lens elements L3, L4 and L5 which are cemented with each other, and the third lens unit G3 comprises one positive lens element L6.

  Recently Added Patents
Method of making and using an alpha-glucanase composition to reduce or remove biofilm
Method of making an array of nucleic acid colonies
System, device and method for transrating file based assets
Solar-powered roadway light
Anti-phishing system and method
Memory with separate read and write paths
Mobile application for calendar sharing and scheduling
  Randomly Featured Patents
Delay compensation for stable current regulation when using variable-delay random PWM switching
Extended drill bit nozzle having extended retainer
Landscape speaker connector and sound system
Regulator mechanism for a two-speed motor
Jitter-free sample rate conversion
Biodegradable intravitreal tyrosine kinase implants
Multiaxial industrial robot
Overlay coatings for superalloys
Panel element for forming a continuous covering on a building
AA/AAA multi-power cell display package