Panasonic PT-LB20S, PT-LB20NT manual Projection dimensions calculation methods, PT-LB20VU

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).

	4:3
	SH
	H1
LW/LT	SW
PT-LB20NTU/PT-LB20U	LW=0.030xSD/0.0254-0.037
	LT=0.036xSD/0.0254-0.037
PT-LB20SU	LW=0.031xSD/0.0254-0.038
	LT=0.037xSD/0.0254-0.038
PT-LB20VU	LW=0.035xSD/0.0254-0.037
	LT=0.042xSD/0.0254-0.036

For 16:9 aspect ratios, the following formula can be used to calculate the projection distance.

PT-LB20NTU/PT-LB20U

LW=0.032xSD/0.0254-0.037

LT=0.039xSD/0.0254-0.037

PT-LB20SU

PT-LB20VU

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

*The values obtained from the formulas above are approximate.

Others

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