NEC PH1000U - Appendix; Throw Distance and Screen Size; Lens Types and Throw Distance

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9. Appendix
 Throw distance and screen size
Fiveseparatebayonetstylelensescanbeusedonthisprojector.Refertotheinformationonthispageandusea
lenssuitedfortheinstallationenvironment(screensizeandthrowdistance).Forinstructionsonmountingthelens,
seepage163.
Eachnumberprovidedinthetablebelowmeansthethrowdistancebetweenthelenssurfaceandthescreen.
Lens types and throw distance
unit=m
Screensize Lensmodelname
NP25FL NP26ZL NP27ZL NP28ZL NP29ZL
80" 1.1 — — — —
100" 1.4
2.9–4.0 4.0–5.5 9.0 12.0–15.0
120" 1.7 3.5–4.8 4.8–6.6 9.0–10.8 12.0–18.0
150" 2.2 4.4–6.0 6.0–8.2 9.0–13.5 13.5–22.4
200" 3.0 5.9–8.0 8.0–11.0 11.1–17.9 17.9–29.8
240" — 7.1–9.6 9.6–13.2 13.3–21.4 21.4–35.7
300" — 8.9–12.0 12.1–16.6 16.5–26.8 26.7–44.5
400" — 11.9–16.1 16.1–22.1 22.0–35.6 35.5–59.3
500" — 14.9–20.1 20.2–24.0 27.4–44.5 44.3–74.0
TIP
• Calculationofthethrowdistancefromthescreensize
 NP25FLlensthrowdistance(m)=H×0.67:1.1m(min.)to3.2m(max.)
 NP26ZLlensthrowdistance(m)=H×1.35toH×1.84:2.8m(min.)to24.0m(max.)
 NP27ZLlensthrowdistance(m)=H×1.84toH×2.54:4.0m(min.)to24.0m(max.)
 NP28ZLlensthrowdistance(m)=H×2.62toH×4.20:9.0m(min.)to45.0m(max.)
 NP29ZLlensthrowdistance(m)=H×4.21toH×6.96:12.0m(min.)to80.0m(max.)
 “H”(Horizontal)referstothescreenwidth.
 *Figuresdifferbyseveral%withthetableabovebecausethecalculationisapproximate.
 Ex.:Throwdistancewhenprojectingona150"screenusingtheNP27ZLlens:
 Accordingtothe“ScreenSize(forreference)”table(→ page 217),H(screenwidth)=323.1cm.
 Thethrowdistanceis323.1cm×1.7to323.1cm×2.3=549.3cmto743.13cm(becauseofthezoomlens).
• UsingtheNP28ZLlenswillslightlychangetheimagesize.WhenusingtheNP28ZLlenstoadjusttheimagesize,adjustthefocus
and then the zoom.