Electron gun for cathode ray tube
First Claim
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1. An electron gun for a cathode ray tube comprising:
- a cathode, a control grid, a screen grid for generating a plurality of electron beams; and
an opposed anode and focus electrode for controlling and accelerating the plurality of electron beams wherein said anode and focus electrode respectively include a central beam passing hole and a pair of peripheral beam passing holes disposed on opposite sides of the central beam passing holes, the respective central and peripheral beam passing holes in the anode and focus electrode being aligned for passage of respective electron beams, the anode and focus electrode each including a centrally disposed recess, the recesses being oppositely directed and each having a central portion including the respective central beams passing hole and two oppositely directed inclined portions inclined relative to the electron beam direction, the inclined portions extending from the central portions of the respective recesses toward the respective peripheral beam passing holes and intersecting at least part of the respective peripheral beam passing holes so that the central beam passing holes of said anode and focus electrode are farther apart than the respective peripheral beam passing holes of said anode and focus electrode.
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Abstract
An electron gun for a cathode ray tube includes a cathode, control grid, a screen grid, and an opposed anode and focus electrode for controlling and accelerating a plurality of electron beams, the anode and the focus electrode including recesses containing aligned central beam passing holes and pairs of peripheral beam passing holes on opposite sides of the central beam passing holes. The peripheral beam passing holes are intersected by planes of the recesses that are inclined relative to the electron beam passing direction.
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Citations
5 Claims
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1. An electron gun for a cathode ray tube comprising:
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a cathode, a control grid, a screen grid for generating a plurality of electron beams; and an opposed anode and focus electrode for controlling and accelerating the plurality of electron beams wherein said anode and focus electrode respectively include a central beam passing hole and a pair of peripheral beam passing holes disposed on opposite sides of the central beam passing holes, the respective central and peripheral beam passing holes in the anode and focus electrode being aligned for passage of respective electron beams, the anode and focus electrode each including a centrally disposed recess, the recesses being oppositely directed and each having a central portion including the respective central beams passing hole and two oppositely directed inclined portions inclined relative to the electron beam direction, the inclined portions extending from the central portions of the respective recesses toward the respective peripheral beam passing holes and intersecting at least part of the respective peripheral beam passing holes so that the central beam passing holes of said anode and focus electrode are farther apart than the respective peripheral beam passing holes of said anode and focus electrode. - View Dependent Claims (2, 3, 4, 5)
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Specification