Transmission electron microscope

A transmission electron microscope comprising an electron gun, an illuminating lens system for irradiating an electron beam from said electron gun onto a specimen, an image formation lens system for forming an enlarged transmission image of said specimen on a record surface of image photographing record means, an image observing display means having a display screen for displaying the enlarged transmission image of said specimen, a magnification setting apparatus for inputting a magnification for image photographing and a magnification for an observation image on said display screen, a photographing view field range detecting apparatus for determining a specimen image range to be recorded by said image photographing record means in accordance with said magnification for image photographing and said magnification for the observation image, and a manifesting apparatus for showing on said display screen said specimen image range to be recorded.

A transmission electron microscope comprising an electron gun, an illuminating lens system for irradiating an electron beam from said electron gun onto a specimen, an image formation lens system for forming an enlarged transmission image of said specimen on a record surface of image photographing record means, an image observing display apparatus having a display screen for displaying the enlarged transmission image of said specimen, a magnification setting apparatus for inputting magnifications for an observation image on said display screen and for image photographing, a photographing view field range detecting apparatus for determining a specimen image range to be recorded by said image photographing record means, a manifesting apparatus for showing on said display screen said specimen image range to be recorded, and means for providing, when said specimen image range to be recorded exceeds said image display range on the display screen depending on the relation between said magnification for image photographing and said magnification for an observation image, a display on said display screen of a signal indicating the exceeding state.

A transmission electron microscope comprising an electron gun, an illuminating lens system for irradiating an electron beam from said electron gun onto a specimen, an image formation lens system for forming an enlarged transmission image of said specimen on a record surface of image photographing record means, an image observing display means having a display screen for displaying the enlarged transmission image of said specimen, means for determining a specimen image range to be recorded by said image photographing record means in an image display range on the display screen of said image observing display means, and means for displaying said specimen image range to be recorded on said display screen of said image observing display means in accordance with an input instruction.