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
Wafer-level chip scale package
Beaconing and superframe structure for millimeter wave wireless technologies
Device for identifying types of document files
Communication system and time synchronization method
Pose-variant face recognition using multiscale local descriptors
Nucleic acid-based tests for prenatal gender determination
Secure service for enabling communication for calling party when communication service for called party is suspended
  Randomly Featured Patents
Method of assembling a core and method of assembling a slot liner
Floorboards, flooring systems and method for manufacturing and installation thereof
Data communications
Marine propulsion apparatus with a heat shield to protect its seals
Methods of measuring cardiac output using a non-invasively estimated intrapulmonary shunt fraction
Image processing apparatus, print control apparatus, method of image processing, and recording medium
Method and apparatus for real-time application-driven resource management in next generation networks
Method of determining multilayer thin film deposition on a piezoelectric crystal
Gel-free process for making hydrogenated functionalized anionically polymerized polymers