Christie CDXL-60 Manual

Christie Projektor tilbehør CDXL-60

Læs gratis den danske manual til Christie CDXL-60 (4 sider) i kategorien Projektor tilbehør. Denne vejledning er vurderet som hjælpsom af 21 personer og har en gennemsnitlig bedømmelse på 4.6 stjerner ud af 11 anmeldelser. Har du et spørgsmål om Christie CDXL-60, eller vil du spørge andre brugere om produktet?

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Side 1/4

Christie Xenolite® lamps

and Christie Solaria™

Series projectors

Usage best practices

How to calculate the amount of light required

The basic formula to calculate this theoretical light requirement is:

Lumens (L) = Average Screen Brightness desired (average fL)

X Screen Area (sq ft)

• Givenagoodlightdistribution,the“AverageScreenBrightness”

canbeestimatedbymultiplyingthecenterbrightnessdesiredby

0.95.Generallyacceptedpracticeforthetargetcenterbrightness

is:14fLfor2Dand4.5fLfor3D(lightmeasurementtakenthrough

3Dglasses).

Afteryouhavethe“Lumens”numberyouwoulddivideitbyall

signicantsystemefciencies.Someexampleswouldbe:

•

Screen gain: 1.0 to 2.4.  Silver screens are   a 2.4. This is very important

partofthisequationandcareshouldbetakentomakesurethis

numberisaccurate.Ifthescreeninquestionisnot  new then the

overall gain should be   measuredproperly. Any degradation  

ordebrisonthescreenwillreducethescreengain.

• Port window efciency: 96%   efciency is typical for good  port glass.

• LossduetocolorcorrectionrequiredformeetingDCIcolor

specications:97%efciencyistypical.

• 3Dsystemlightefciency:thisnumbercanbeanywhere

from10%to30%efciencydependingonthe3Dsystemused.

• Othereffectslikedownangleandscreencurvedomakea

differenceforlightdistributionbuttheyonlyeffectthese

calculationsifthey excessive.are

 Calculation:Lumens Required (L) = Lumens (L) / (Screen Gain X Port

Window Efﬁciency X Color Correction Efﬁciency X 3D Efﬁciency)

 Theresulting“LumensRequired”numberyougetwouldbethe

“MINIMUMlumenrequirement”tomeetthedesiredlightlevels.

How to select the right projector/lamp combination

that will provide enough light to satisfy screen

brightness requirements

Thereshouldbeenoughbrightnessavailableevenattheendof

thelamp’slifetomeetyourspeciedcenterbrightnessrequirement.

Yourcompany’slampchangingpolicymayneedtobereviewedto

makethisdecision.

Thereisanaturalbrightnessdrop-offthatoccurswithanyXenonlamp

duringitslife.Thisbrightnesscurveistypicallysharpatthebeginning

ofthelamp’slifeanddropsslowerafterthisinitialperiod.Leaving

thelampat100%powerthroughoutitslifewouldgivethistypical

brightnesscurve:

Lamp life

Starting lamp at 100% power

Maintaining lamp at 100% power

Point at which

brightness is

unacceptable

Approximately

50% brightness

100% Rated

brightness

(lamp/projector

combination)

Brightness

Thisinitialdrop-offinbrightnessismainlyduetothere-shapingofthe

electrodesinsidethelamp.The betweentheelectrodesinsidethearc

lampwillmoveslightlyduringthisperiod.Re-aligningthelampoften

canminimizethisdrop-off.Thisre-alignmentshouldbedoneatleast

everytimetheequipmentisserviced.Themorefrequentthisisdone,

themorelightefciencycanbepreserved.

100%Ratedbrightnesswouldindicatetheuseofanewlamprunning

at100%power.

USAGE BEST RACTICES P

Optimize your Christie

digital cinema system

Christie Xenolite ®     lamps can produce remarkable brightness

and color consistency with excellent resistance to icker,       

ignition difculty and explosion. With this superior performance       

comes great economy. Here some usage guidelines    are   

that can be applied to get optimum performance from the         

Christie Xenolite lamp and Christie Solaria     ™  Series projector

combination. If you need technical support to help you        

with this, please do not hesitate to contact Christie        

technical support.

Produkt Specifikationer

Mærke:	Christie
Kategori:	Projektor tilbehør
Model:	CDXL-60

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