to electron beam transmission maxima and minima respectively in adjacent higher transmission mask bands ht and lesser transmission mask bands lt integrated over multiple mask columns 30 t max and t min can also be considered localized light output wherein the values can represent those which are integrated over at least 2 consecutive like said phosphor stripes the moir u00e9 mtf represents the maximum of the light to dark band contrast and is a function of the electron beam spot size and shape the tie bar height w the intra column mask aperture pitch a v and the scan line spacing s l moir u00e9 mtf is the same for scan line spacings that are 1 2 or 3 times the vertical repeat moir u00e9 mtf becomes important when the moir u00e9 pitch is in a regime of human eye sensitivity the peak sensitivity for humans is 34 cycles per degree of vision in such a regime increasing moir u00e9 mtfs will yield increasing visible moir u00e9 the moir u00e9 mtf u00d7 100 is exhibited for the particular tube shown in fig9 as the peak value of u02dc 15 5 of the moir u00e9 visibility this particular value of u02dc 15.