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
Cantilever of scanning probe microscope and method for manufacturing the same, method for inspecting thermal assist type magnetic head device and its apparatus
Method for producing vinyl acetate monomer
Method and system for providing cloud based network security services
Pausing multimedia data streams
Method and device for determining processed image data about a surround field of a vehicle
Flip-chip mounting resin composition and bump forming resin composition
  Randomly Featured Patents
Shoe sole
Battery charging system and methods
Asynchronous multichannel receiver
Apparatus and method for acquiring the nature of a toner particle layer and the moisture content of a carrier material in a printer or copier
Method, apparatus, system, and computer program product for interruption-free conference calling
Spinning top pinball-type game
Low voltage battery indicator for a solid state watch
Sense amplifier for flash memory
Combined video camera and disc recorder
Temperature sensor for use in a spark plug of an internal combustion engine