Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Charging member, electrophotographic apparatus, and process cartridge
Cognitive radio cooperative spectrum sensing method and fusion center performing cognitive radio cooperative spectrum sensing
Methods and apparatus for imaging in conjunction with radiotherapy
Image browsing device, computer control method and information recording medium
Data communication system, data transmitting apparatus, data transmitting method, and method for determining packet size and redundancy
Method and device for peer arrangement in single substream upload P2P overlay networks
Molecular sieve
  Randomly Featured Patents
Overhead display unit for inflated balloons
UV-absorbing polymer latex
Device for the mechanical cleansing of fluids
Semiconductor structure and methods of manufacture
Thrust reverser for jet engine forming active extension of jet tube
Covered endoscope having a cap cover for shielding a dilation tube cap with which a dilation tube is coupled
Mounted video unit
Rare earth-iron-nitrogen based magnetic material and method of manufacturing the same
Delay diversity and spatial rotation systems and methods
Antiperspirant and deodorant sticks containing triglyceride gellants having improved high temperature texture and phase stability