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
Synchronous rectifier network unit circuit and method
Method for generating optical codes for a print-context
Flexure with insulating layer isolating a portion of a metal substrate
Image stabilization apparatus and image pickup apparatus
Portable hand-held multi-function device for storing, managing and combining rewards
Systems and methods for flow mirroring with network-scoped connection-oriented sink
Fuel-based injection control
  Randomly Featured Patents
Grain drying apparatus and process
Method of high vacuum heat insulation and a vacuum heat insulator used therein
Determining a route to destination based on partially completed route
Method for estimating capacitance of deep trench capacitors
Method of manufacture of a planar thermoelastic bend actuator ink jet printer
Washing machine having image design displayed thereon
Window component extrusion
Method of forming a capacitor
Weight change indicating apparatus
User management for repository manager