Electron beam apparatus with potential specifying plate...

Details Electron beam apparatus with potential specifying plate... Electron beam apparatus with potential specifying plate...

2006-07-11

2006-07-11

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

C313S309000, C313S336000, C313S351000

Reexamination Certificate

active

07075223

ABSTRACT:
In an electron beam apparatus including an electron source and an electron beam irradiation member, a potential specifying plate including openings through which an electron transmits is provided between the electron source and the electron beam irradiation member. A spacer is located between the electron beam irradiation member and the potential specifying plate. In the case where a distance between a region between one opening of the potential specifying plate near the spacer and the spacer and the electron beam irradiation member is D1and a distance between a region between that opening and another opening not near the spacer and the electron beam irradiation member is given by D2,if D1<D2is satisfied, a deviation of an orbit of an electron beam emitted from the electron source is suppressed, so that it is possible to produce a high quality image.

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