Electron Gun Systems for Color Cathode Ray Tubes

Suzuki, Hiroshi

doi:10.1016/s1076-5670(08)70178-2

Cited by 6 publications

(3 citation statements)

References 90 publications

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“…We define the cross-section ds b measured perpendicular to the beam path and the beam width ds g at the inner panel, respectively. Then ds g can be expressed by (1) where θ 0 is the deflection angle of the beam while α is the angle of the inner panel perpendicular to the tube axis where the beam arrives. Because the spot is observed from the front of the panel, the size of the deflected beam of diameter ds b is measured as ds o :…”

Section: Oblique Incidencementioning

confidence: 99%

“…The first color cathode-ray tube (CRT) was developed with the three-gun shadow-mask system for commercial color TV use by 1950. 1 Each gun of the three-gun system was individually assembled with cylindrical electrodes that were identical to the guns employed in black-and-white tubes. To maximize the lens diameter to reduce the spot size on the screen in the limited glass neck diameter, the three guns were mounted in a delta or triangular arrangement.…”

Section: Introductionmentioning

confidence: 99%

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A study on spot distortion for an in‐line self‐converging system for color CRTs

Wada

2008

J Soc Info Display

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The spot distortion at the screen periphery of an in-line self-converging CRT is formulated by considering four factors; (a) oblique incidence of the beam at the screen periphery, (b) increased path length of the beam, (c) beam compression due to the deflection, and (d) the astigmatism due to the deflection field. The analytic spot size calculated with the formulas agrees well with measurement, though the effects of a particular gun system, spherical aberration, and space-charge repulsion are not taken into consideration in the formulas while assuming an ideal deflection field. The analytic formulas enable easy evaluation of spot distortion at the screen periphery because they give an intuitive understanding of beam behavior in the in-line self-converging system. In addition to the derivation of the formulas, "transposed scanning" is analyzed with the use of the formulas for one of the ways to optimize the spot distortion at the screen periphery.

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Section: Oblique Incidencementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A study on spot distortion for an in‐line self‐converging system for color CRTs

Wada

2008

J Soc Info Display

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“…Electron guns in color picture tubes, such as is illustrated in Figs. 3-5, use electrostatic focusing from electrified metal grids (Shirai, 1999) (Suzuki, 1999). The grids nearly enclose the beam (or beams) to prevent extended exposure to the glass, which can charge unpredictably and distort the fields.…”

Section: Electron Gunsmentioning

confidence: 99%

Computer‐aided design of electron guns and deflection yokes: A review (Part 2)

Alig

Fields

2000

J Soc Info Display

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Abstract— Computer‐aided‐design (CAD) is now used in many engineering disciplines. CAD in electron optics applied to the design of electron guns and yokes eases and enables new designs. It makes old designs better. The general performance of a design can be anticipated with confidence. Modern CAD techniques allow the designer to predict performance, carry out engineering tradeoffs, and evaluate the sensitivity of different designs to manufacturing tolerances, avoiding lengthy and costly prototypes. Advantages, examples, tools, and an illustration of CAD were presented in Part 1 in 1997 (see Vol. 5, No. 3). The fundamental concepts were also reviewed and the essential physical and mathematical relationships presented. In this Part 2, numerical calculation methods and important algorithms are summarized. These allow beam simulations, which yield spot profiles and raster patterns more easily and more accurately than engineering prototypes, thereby expediting design. Data analysis and display techniques are described together with hardware and software considerations.

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Design and Performance of Shadow-Mask Color Cathode Ray Tubes

Yamazaki¹

1998

Advances in Imaging and Electron Physics

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Electron Gun Systems for Color Cathode Ray Tubes

Cited by 6 publications

References 90 publications

A study on spot distortion for an in‐line self‐converging system for color CRTs

A study on spot distortion for an in‐line self‐converging system for color CRTs

Computer‐aided design of electron guns and deflection yokes: A review (Part 2)

Design and Performance of Shadow-Mask Color Cathode Ray Tubes

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