. Airborne radar. Airplanes; Guided missiles. -Clear Face Fig. 12-39 Physical Arrangement of the Shadow Mask Color CRT. Deflection Yoke Three Electron Guns. Axis of Electron Beam Fig. 12-40 Operation of Shadow Mask Color CRT. [H. B. Law, Proc. IRE (Oct. 1951) p. 1187] proper phosphor dots without affecting adjacent color dots. The shadow mask, a thin perforated diaphragm, blocks any one beam (such as the beam designed to excite only green phosphor dots) from striking dots other than the proper one (green in this case). Separation of colors is obtained by the direction of entry of the three bea
. Airborne radar. Airplanes; Guided missiles. -Clear Face Fig. 12-39 Physical Arrangement of the Shadow Mask Color CRT. Deflection Yoke Three Electron Guns. Axis of Electron Beam Fig. 12-40 Operation of Shadow Mask Color CRT. [H. B. Law, Proc. IRE (Oct. 1951) p. 1187] proper phosphor dots without affecting adjacent color dots. The shadow mask, a thin perforated diaphragm, blocks any one beam (such as the beam designed to excite only green phosphor dots) from striking dots other than the proper one (green in this case). Separation of colors is obtained by the direction of entry of the three beams through the holes of the shadow mask and by the geometry of the shadow mask and phosphor dot screen. To minimize convergence and focus difficulties throughout the front face of the tube, curvature of the shadow mask and phosphor screen are sometimes used. In the shadow mask tube different colors are obtained by modulating the three beams to obtain an additive color of any hue, the observer's eyes integrating over the individual dots. All three beams, which are generated by three guns placed symmetrically about the neck of the tube, are deflected. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Povejsil, Donald J. Princeton, N. J. , Van Nostrand
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Keywords: ., bookcentury1900, bookcollectionbiodiversit, booksubjectairplanes
