PatentVote.com: Vote on your favourite invention!

Next ten patents ordered by date:
Method and apparatus for processing a video signal from a scanning electron microscope
Method of and an apparatus for examining a sample or a material by measuring the absorption of .gamma.- or x-ray radiation
Tire inspection system with shielded X-ray source
Scintillation spectrometer
Apparatus for examining a body by radiation such as X or gamma radiation
Pollution monitor with self-contained calibration and cell-block therefor
Auxiliary collimating device for obtaining irradiation fields of any shape for high energy radiotherapy apparatus
System and method for generation and distribution of electrical and thermal energy and automatic control apparatus suitable for use therein
Arrangement for protecting the gonads in X-ray diagnostics
Multi-windmill wheel power generator
Translate:
En
De
Es
Fr
It
Pt
Ja
Ko
Zh 

 

Title: Virtual image type double focusing mass spectrometer

Abstract: A virtual image type double focusing mass spectrometer having a diverging electrostatic field and a converging magnetic field, wherein parameters related to the fringing effects in the boundaries of said fields and to the distribution of the electrostatic field reduces image aberrations of the second order.


Do you think this is a good invention? Vote now:

 Votes so far: For:(0) Against:(0)
Other info:


Inventors: Matsuda, Hisashi (Takarazuka, JA)

Application Number: 498078
Filing Date: 1974-08-16
Publication_date: 1976-03-16
Assignee: Nihon Denshi Kabushiki Kaisha (Tokyo, JA)
Primary Class(es): 250/298 250/299
Other Classes:
US Patent Ref:
3617741Nov, 1971Siegbahn et al.250/281.

Other Refs:
Primary Examiner: Willis, Davis L.
Assistant Examiner:
Attorney: Webb, Burden, Robinson & Webb