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
Combination for composite layered chip package
Recovery of a hot-pluggable serial communication link
Multi-protocol data transfers
Structure of pixel electrode
Method for manufacturing light emitting diodes
Fluorescent proteins
Three-term predictive adder and/or subtracter
  Randomly Featured Patents
Lifting lug for tanks and the like
Nucleic acid transporter system and methods of use
Impact modified polylactide
Heaterless adsorption system for combined purification and fractionation of air
Cyclopropane derivatives and method of preparing the same
Methods for deploying bypass graft stents
Handling multi-rank pools and varying degrees of control in volume allocation on storage controllers
Method and device for testing an integrated circuit, integrated circuit to be tested, and wafer with a large number of integrated circuits to be tested
Electrodeless microwave-generated radiation apparatus
Filter mounting frames for eyeglasses