Panasonic PT-LB20 Operating Instructions Manual

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Panasonic PT-LB20 Operating Instructions Manual Manual pdf 63 page image

OthersProjection dimensions calculation methodsIf the screen size (diagonal) is SD (m), then the following formula is used tocalculate the projection distance for the wide lens position (LW) and theprojection distance for the telephoto lens position (LT).*The values obtained from the formulas above are approximate.For 16:9 aspect ratios, the following formula can be used to calculate theprojection distance.E NGLISH-63SDSW4:3LW/LTH1SHLW=0.030xSD/0.0254-0.037LT=0.036xSD/0.0254-0.037LW=0.031xSD/0.0254-0.038LT=0.037xSD/0.0254-0.038LW=0.035xSD/0.0254-0.037LT=0.042xSD/0.0254-0.036PT-LB20NTU/PT-LB20UPT-LB20SUPT-LB20VULW=0.032xSD/0.0254-0.037LT=0.039xSD/0.0254-0.037LW=0.033xSD/0.0254-0.038LT=0.040xSD/0.0254-0.038LW=0.038xSD/0.0254-0.037LT=0.046xSD/0.0254-0.037PT-LB20NTU/PT-LB20UPT-LB20SUPT-LB20VU