| 摘要 |
THIS CATHODE RAY TUBE INCLUDES A VACUUM ENVOLAPE (23) HAVING A SUBSTANTIALLY RECTANGULAR PANEL (20) A FUNNEL (21) FORMED CONTIGUOUS TO THE PANEL, AND A CYLINDRICAL NECK (22) FORMED CONTIGOUS TO THE SMALL DIAMETER END PORTION OF THE FUNNEL AN ELECTRON GUN ASSEMBLY (47) DISPOSED IN THE NECK TO GNERATE ELECTRON BEAMS AND A DEFLECTION YOKE (48) MOUNTED ON THE OUTER SIDE OF THE FUNNEL NEAR THE NECK SIDE OVER A PREDETERMINED RANGE (24) TO FORM A MAGNETIC FIELD IN THE FUNNEL THEREBY DEFLECTING THE ELECTRON BEAMS ALONG THE MAJOR AND MINOR AXES OF THE PANEL. OF THE PREDETERMINED RANGE OF THE FUNNEL AT THE NECK SIDE THE FUNNEL IS FORMED TO HAVE AN OUTER SHAPE WITH A SECTION WHICH IS GRADUALLY DEFORMED FROM THE NECK SIDE TO THE PANEL SIDE FROM A CIRCULAR SHAPE TO A NON-CIRCULAR SHAPE HAVING A MAXIMUM DIAMETER ALONG A DIRECTION OTHER THAN THE MAJOR AND MINOR AXES. THE FUNNEL OF THE PREDETERMINED RANGE IS FORMED TO HAVE AN OUTER SHAPE WITH A SECTION THAT SATISFIED A RELATION :0.3<= HV / L<=0.6 WHERE L IS THE RADIUS OF THE MAXIMUM DIAMETER, H IS THE DIFFRENCE BETWEEN THE RADIUS L AND A RADIUS H ALONG THE MAJOR AXIS , V IS THE DIFFERENCE BETWEEN THE RADIUS L AND A RADIUS V ALONG THE MINOR AXIS AND HV IS THE SUM OF H AND V
|
