Static convergence device for electron beams

Claim 2

A beam adjustment assembly for a multi-beam color cathode ray tube, comprising: first and second permanent magnets; a nonmagnetic supporting member having a central aperture for receiving the neck of said tube, said member supporting said first and second magnets on opposite sides of said aperture with like poles of said magnets directed toward said aperture for producing magnetic fields in opposite directions at diametrically opposite sides of said aperture; means positioned adjacent said nonmagnetic supporting member and having a central aperture therein for receiving the neck of said tube, said means providing a plurality of magnetic pole regions adjacent the central aperture thereof to produce magnetic fields in the same direction at diametrically opposite sides of said aperture; and means for adjustably supporting said member and said first-named means relative to one another.

Claim 3

A beam adjustment assembly for a multi-beam color cathode ray tube, comprising: first, second and thrid permanent magnets; a nonmagnetic supporting member having a central aperture for receiving the neck of said tube, said member supporting said first, second and third magnets at 120* intervals around the circumference of said aperture with like poles of said magnets directed toward said aperture for producing magnetic fields in the same direction at diametrically opposite sides of said aperture; means positioned adjacent said nonmagnetic supporting member and having a central aperture therein for receiving the neck of said tube, said means providing a plurality of magnetic pole regions adjacent the central aperture thereof to produce magnetic fields in opposite directions at diametrically opposite sides of said aperture; and means for adjustably supporting said member and said first-named means relative to one another.

Claim 4

A beam adjustment assembly for a multi-beam color cathode ray tube, comprising: first, second and thrid permanent magnets; a nonmagnetic supporting member having a central aperture for receiving the neck of said tube, said member supporting said first, second and third magnets at 120* intervals around the circumference of said aperture with like poles of said magnets directed toward said aperture for producing magnetic fields in the same direction at diametrically opposite sides of said aperture; means positioned adjacent said nonmagnetic supporting member and having a central aperture therein for receiving the neck of said tube, said means providing a plurality of magnetic pole regions adjacent the central aperture thereof to produce magnetic fields in opposite directions at diametrically opposite sides of said aperture; and means for adjustably supporting said member and said first-named means relative to one another.

Claim 5

A beam adjustment assembly for converging a plurality of spaced apart coplanar electron beams of a color cathode ray tube, comprising: first means adapted to be adjustably rotatably mounted around the neck region of said tube, said first means including at least one set of a plurality of equally circumferentially spaced permanent magnets, all magnets of a set having like poles disposed toward the center of said neck region for producing opposite direction motion of substantially only the outside ones of said beams; and second means adapted to be adjustably rotatably mounted around the neck region of said tube, said second means including at least one set of a plurality of equally circumferentially spaced permanent magnets, all magnets of a set having like poles disposed toward the center of said neck region for producing the same direction motion of substantially only the outside ones of said beams.

Claim 6

A beam adjustment assembly for converging a plurality of spaced apart coplanar electron beams of a color cathode ray tube, comprising: first means adapted to be adjustably rotatably mounted around the neck region of said tube, said first means including at least one set of a plurality of equally circumferentially spaced permanent magnets, all magnets of a set having like poles disposed toward the center of said neck region for producing opposite direction motion of substantially only the outside ones of said beams; and second means adapted to be adjustably rotatably mounted around the neck region of said tube, said second means including at least one set of a plurality of equally circumferentially spaced permanent magnets, all magnets of a set having like poles disposed toward the center of said neck region for producing the same direction motion of substantially only the outside ones of said beams.

Claim 7

A beam adjustment assembly according to claim 1 wherein said first means includes a second set of equally circumferentially spaced permanent magnets equal in number to said first set but having the opposite poles disposed toward said neck region; and said second means includes a second set of equally circumferentially spaced permanent magnets equal in number to said first set but having the opposite poles disposed toWard said neck region.

Claim 8

A beam adjustment assembly according to claim 3 wherein said set of magnets of said first means includes two permanent magnets adapted to be disposed adjacent diametrically opposite portions of said neck region, the magnetic flux paths of said two magnets effectively forming two poles of the opposite polarity of said first mentioned magnet poles diametrically opposite each other and disposed substantially equidistant circumferentially between said first mentioned two magnet poles; and said set of magnets of said second means includes three permanent magnets adapted to be disposed at 120* intervals around the circumference of said neck region, the magnetic flux paths of said three magnets effectively forming three poles of the opposite polarity of said first magnet poles substantially equidistant circumferentially between said first mentioned three magnet poles.

Claim 9

A beam adjustment assembly according to claim 5 wherein said first means includes a set of magnets mounted adjacent to said first set and being similar to said first set except that the magnet poles are of opposite polarity; and said second means includes a second set of magnets mounted adjacent to said first set and being similar to said first set except that the magnet poles are of opposite polarity.

Claim 10

A beam adjustment assembly according to claim 6 including third means adapted to be rotatably mounted around the neck region of said tube, said third means including two adjacent magnet rings each magnetized to have two opposite polarity magnetic poles diametrically across from each other.

Claim 11

A static convergence assembly for converging three in-line electron beams of a color television picture tube, comprising: first means including a first member adapted to be mounted for rotation around the neck region of said picture tube, said member having first and second magnets disposed on diametric opposite sides thereof, said magnets being further disposed such that their magnetic poles of the same polarity are pointed radially inwardly toward said neck region for causing the two outside ones of said beams to move in opposite directions; and second means including a second member adapted to be mounted for rotation around the neck region of said picture tube, said member having three magnets spaced at 120* intervals around said second member, said three magnets being further disposed such that their magnetic poles of the same polarity are pointed radially inwardly toward said neck region for causing the two outside ones of said beams to move in the same direction; said first and second means being adapted to allow the varying of the intensity of the magnetic flux in said neck region.

Claim 12

A static convergence assembly for converging three in-line electron beams of a color television picture tube, comprising: first means including a first member adapted to be mounted for rotation around the neck region of said picture tube, said member having first and second magnets disposed on diametric opposite sides thereof, said magnets being further disposed such that their magnetic poles of the same polarity are pointed radially inwardly toward said neck region for causing the two outside ones of said beams to move in opposite directions; and second means including a second member adapted to be mounted for rotation around the neck region of said picture tube, said member having three magnets spaced at 120* intervals around said second member, said three magnets being further disposed such that their magnetic poles of the same polarity are pointed radially inwardly toward said neck region for causing the two outside ones of said beams to move in the same direction; said first and second means being adapted to allow the varying of the intensity of the magnetic flux in said neck region.

Claim 13

A static convergence assembly in accordance with claim 8 wherein said first and second means are selected to permit radial movement of said magnets for varying the intensity of the magnetic flux in said neck region.

Claim 14

A static convergence assembly for converging three in-line beams of a color television picture tube comprising: first and second adjacent members adapted for individual rotational movement about the neck region of said picture tube, said first member including two diametrically opposed magnets having their north poles closest to the neck region, the flux from said magnets effectively forming two diametrically opposed magnetic south poles each located 90* from said north poles, said second member including two diametrically opposed magnets having their south poles closest to the neck region, the flux from said magnets effectively forming two diametrically opposed north poles each located 90* from said south poles, the quadripole fields of said first and second members cooperating to control the amount of movement in opposite directions of substantially only the two outside ones of said beams; and third and fourth adjacent members disposed adjacent said first and second members adapted fOr individual rotational movement about the neck region of said picture tube, said third member including three magnets disposed at 120* intervals around the circumference of said neck region and having their north poles closest to the neck region, the flux from said magnets effectively forming three 120* spaced south magnetic poles each spaced 60* from adjacent ones of said north poles, said fourth member including three magnets disposed at 120* intervals around the circumference of said neck region and having their south poles closest to the neck region, the flux from said magnets effectively forming three 120* spaced north magnetic poles each spaced 60* from adjacent one of said south poles, the sextipolar fields of said third and fourth members cooperating to control the amount of movement in the same direction of substantially only the two outside ones of said beams.

Claim 15

A static convergence assembly for converging three in-line beams of a color television picture tube comprising: first and second adjacent members adapted for individual rotational movement about the neck region of said picture tube, said first member including two diametrically opposed magnets having their north poles closest to the neck region, the flux from said magnets effectively forming two diametrically opposed magnetic south poles each located 90* from said north poles, said second member including two diametrically opposed magnets having their south poles closest to the neck region, the flux from said magnets effectively forming two diametrically opposed north poles each located 90* from said south poles, the quadripole fields of said first and second members cooperating to control the amount of movement in opposite directions of substantially only the two outside ones of said beams; and third and fourth adjacent members disposed adjacent said first and second members adapted fOr individual rotational movement about the neck region of said picture tube, said third member including three magnets disposed at 120* intervals around the circumference of said neck region and having their north poles closest to the neck region, the flux from said magnets effectively forming three 120* spaced south magnetic poles each spaced 60* from adjacent ones of said north poles, said fourth member including three magnets disposed at 120* intervals around the circumference of said neck region and having their south poles closest to the neck region, the flux from said magnets effectively forming three 120* spaced north magnetic poles each spaced 60* from adjacent one of said south poles, the sextipolar fields of said third and fourth members cooperating to control the amount of movement in the same direction of substantially only the two outside ones of said beams.

Claim 16

A static convergence assembly for converging three in-line electron beams of a color television picture tube, comprising: first means including a first member adapted to be mounted for rotation around the neck region of said picture tube, said member having first and second magnets disposed on diametric opposite sides thereof, said magnets being further disposed such that their magnetic poles of the same polarity are pointed radially inwardly toward said neck region for causing the two outside ones of said beams to move in opposite directions; and second means including a second member adapted to be mounted for rotation around the neck region of said picture tube, said member having a plurality of magnets spaced equidistantly around said second member, said plurality of magnets producing magnetic fields for causing the two outside ones of said beams to move in the same directions; said first and second means including means for allowing the varying of the intensity of the magnetic flux in said neck region.

Claim 17

A static convergence assembly for converging three in-line electron beams of a color television picture tube, comprising: first means including a first member adapted to be mounted for rotation around the neck region of said picture tube, said member having first and second magnets disposed on diametric opposite sides thereof, said magnets being further disposed such that their magnetic poles of the same polarity are pointed radially inwardly toward said neck region for causing the two outside ones of said beams to move in opposite directions; and second means including a second member adapted to be mounted for rotation around the neck region of said picture tube, said member having a plurality of magnets spaced equidistantly around said second member, said plurality of magnets producing magnetic fields for causing the two outside ones of said beams to move in the same directions; said first and second means including means for allowing the varying of the intensity of the magnetic flux in said neck region.

Claim 18

A static convergence assembly for converging three in-line electron beams of a color television picture tube, comprising: first means including a first member adapted to be mounted for rotation around the neck region of said picture tube, said member having a plurality of magnets spaced equidistantly around said member, said plurality of magnets producing magnetic fields for causing the two outside ones of said beams to move in opposite directions; and second means including a second member adapted to be mounted for rotation around the neck region of said picture tube, said member having three magnets spaced at 120* intervals around said second member, said three magnets being further disposed such that their magnetic poles of the same polarity are pointed radially inwardly toward said neck region for causing the two outside ones of said beams to move in the same direction; said first and second means including means for allowing the varying of the intensity of the magnetic flux in said neck region.

Claim 19

A static convergence assembly for converging three in-line electron beams of a color television picture tube, comprising: first means including a first member adapted to be mounted for rotation around the neck region of said picture tube, said member having a plurality of magnets spaced equidistantly around said member, said plurality of magnets producing magnetic fields for causing the two outside ones of said beams to move in opposite directions; and second means including a second member adapted to be mounted for rotation around the neck region of said picture tube, said member having three magnets spaced at 120* intervals around said second member, said three magnets being further disposed such that their magnetic poles of the same polarity are pointed radially inwardly toward said neck region for causing the two outside ones of said beams to move in the same direction; said first and second means including means for allowing the varying of the intensity of the magnetic flux in said neck region.