Projection Dimensions Calculation Methods - Panasonic PT-LB20NTU Operating Instructions Manual

Projection dimensions calculation methods

If the screen size (diagonal) is SD (m), then the following formula is used to
calculate the projection distance for the wide lens position (LW) and the
projection distance for the telephoto lens position (LT).
PT-LB20NTU/PT-LB20U
For 16:9 aspect ratios, the following formula can be used to calculate the
projection distance.
PT-LB20NTU/PT-LB20U
*The values obtained from the formulas above are approximate.
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LW/LT
PT-LB20SU
PT-LB20VU
PT-LB20SU
PT-LB20VU
4:3
SW
LW=0.030xSD/0.0254-0.037
LT=0.036xSD/0.0254-0.037
LW=0.031xSD/0.0254-0.038
LT=0.037xSD/0.0254-0.038
LW=0.035xSD/0.0254-0.037
LT=0.042xSD/0.0254-0.036
LW=0.032xSD/0.0254-0.037
LT=0.039xSD/0.0254-0.037
LW=0.033xSD/0.0254-0.038
LT=0.040xSD/0.0254-0.038
LW=0.038xSD/0.0254-0.037
LT=0.046xSD/0.0254-0.037
E -63
NGLISH