Looks like a system based on electrostatic lenses rather than the electromagnetic lenses commonly used in TEM today. Background: http://books.google.com/books?

Looks like a system based on electrostatic lenses rather than the electromagnetic lenses commonly used in TEM today. Background: http://books.google.com/books?id=y0FF19lud5YC&pg=PA162&lpg=PA162&dq=electrostatic+lens+tem&source=bl&ots=ds9JuGhy3k&sig=Ui3ly6JHvA2-NoJ615nY3x3woNw&hl=en&ei=5ARaSt-eGMqJtgfa-qTdCg&sa=X&oi=book_result&ct=result&resnum=1 http://books.google.com/books?id=y0FF19lud5YC&pg=PA162&#...