Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Transmission-type electron microscope










Image Number 2 for United States Patent #4633085.

An electron microscope having plural stages of focusing lenses between an objective lens and an electron gun. The magnetic pole piece of the focusing lens of the final stage which is on the side of the objective lens takes a conic form which tapers toward the objective lens. The yoke of the objective lens on the side of the focusing lenses is centrally provided with a conic recess. This structure makes it possible to shorten the distance between the position of the magnetic field produced by an auxiliary lens and the front focal point defined by a front objective lens without introducing interference between the focusing lens of the final stage and the object lens proper. Thus, the observation of an electron micrograph covering a wide field of view facilitates accurate analysis of the physical properties of a designated microscopic region on a specimen.








 
 
  Recently Added Patents
Retransmission control method, base station and mobile station
Verification of computer-executable code generated from a model
System and method for secure power systems infrastructure communications
Fusing apparatus and image forming apparatus provided with the same, and heating apparatus
Concentrating photovoltaic system module with actuator control
Primed stem cells and uses thereof to treat inflammatory conditions in joints
Antenna array system
  Randomly Featured Patents
Turbine seal with sealing strip and rubbing strip
Gas turbine engine debris monitoring arrangement
Combination method for treating diseases caused by cytokine-mediated toxicity
Beverage dispenser
Communication apparatus capable of conducting remote diagnosis using communication circuit
Operational mechanism for movable body
Shock attenuating apparatus and method
Novel pigment grinding vehicles
Wallboard having improved drying rate due to plural contacting fiber networks
Apparatus for melting glass