Epson 5020UB Handleiding

Epson Beamer 5020UB

Lees hieronder de 📖 handleiding in het Nederlandse voor Epson 5020UB (7 pagina's) in de categorie Beamer. Deze handleiding was nuttig voor 30 personen en werd door 2 gebruikers gemiddeld met 4.5 sterren beoordeeld

Pagina 1/7

By M. David Stone | May 7, 2013

Summary excerpts

Color Brightness: What It Is, Why It Matters

“Color brightness, color light output, or simply CLO...has an excellent pedigree, as part of the

Information Display Measurements Standard ”

“Differences in image brightness are a big part of why color

brightness is worth knowing about”

“What these results confirm is that, as a practical matter, if you're showing primarily black and

white images like word processing documents or spreadsheets, DLP and LCD projectors with the

same ANSI lumen measurements will both be equally bright. For color images however, whether

PowerPoint slides or photos, the LCD projector will be brighter.”

“The difference in color brightness, however, was huge, with the LCD projector delivering essen-

tially the same number for color brightness as for white brightness, and the DLP projector

coming in at just 680 lumens, or about 21 percent of its measurement for white light.”

“Almost all (DLPs) boost their brightness for white light-

-which is what ANSI lumens measures--by adding one or

more additional panels beyond red, green, and blue”

“[The standard] was developed by the International Committee for Display Metrology (ICDM),

which is part of the Society for Information Display (SID), in cooperation with the Video Elec-

tronics Standards Association (VESA). All of which makes it a pretty definitive standard.”

1-chip DLP 3-chip 3LCD

The DLP projector’s color brightness is

only 21 percent as much as the 3-chip

3LCD projector.

Color Brightness:

What It Is, Why It Matters

PC MAGAZINE • May 7, 2013

By M. David Stone | May 7, 2013

As you may have noticed, there's a

(relatively) new spec for projectors in town,

variously called color brightness, color light

output, or simply CLO. Whatever you call it, is

has an excellent pedigree, as part of the Infor-

mation Display Measurements Standard

version 1.03 (IDMS 1), dated June 1, 2012.

IDMS 1 was developed by the International

Committee for Display Metrology (ICDM),

which is part of the Society for Information

Display (SID), in cooperation with the Video

Electronics Standards Association (VESA). All

of which makes it a pretty definitive standard.

As you may also have noticed, Epson recently

began touting its LCD projectors as having

three times brighter colors than "leading com-

petitive projectors." The claim also applies

more broadly to any projector using 3LCD

technology, which means a light engine with

three LCD chips, with one each for the red,

green, and blue primary colors.

The competition Epson is referring to is the

universe of DLP projectors that use a single

DLP chip (which I'll refer to simply as DLP

projectors). The claim is based on the typical

difference in color light output between a 3LCD

projector and a DLP projector that both have

equal brightness in ANSI lumens, which mea-

sures white light output. The problem with the

claim is that although it's both true and mean-

ingful, it's also easy to misunderstand.

PC MAGAZINE • May 7, 2013

Why Three Times as Bright Isn't Three

Times as Bright

The first issue is that brightness is actually the

wrong word, although almost everyone uses it

this way (and I'll continue to use it through the

rest of this discussion). Technically, however,

brightness refers strictly to perception, so how

bright something is means how bright it looks.

The intensity of light that's coming out of the

projector is more properly called illuminance.

The difference matters because perception of

brightness is logarithmic. Triple the illuminance

of a projector, and the same size image will look

brighter, but nowhere near three times as bright.

So what Epson is actually claiming is that its

3LCD projectors typically deliver color with

three times the illuminance of DLP projectors

with the same ANSI lumen rating, not three

times the brightness in the technically correct

definition of brightness.

A second semantic issue is that you can also use

brightness as a term for describing color quality.

In fact, the hue-saturation-brightness color

model uses brightness as one of the three param-

eters for describing any given color, with a

vibrant yellow, for example, qualifying as

brighter than a less vibrant version of the same

yellow hue.

What makes this second issue particularly prob-

lematic is that a projector's color brightness

actually does tell you something about its color

quality. However, the relationship between the

color brightness and color quality is compli-

cated. Because of that, I will ignore issues of

color quality for the rest of this discussion, and

cover them separately. What I'll concentrate on

here is the difference in color brightness mea-

surements between 3LCD and DLP projectors.

Where Brighter Colors Come From

The reason for the difference in color brightness

between the two technologies is easy to under-

stand. Projectors with 3LCD technology simply

add red, green, and blue together to create white.

So if you measure the lumens for red, green, and

blue separately, and then add them up, the total

will be the same as the industry-wide ANSI

lumen measurement for white.

In contrast, DLP projectors create colors by

projecting one color at a time, in sequence. The

vast majority use a rotating color wheel, shining

light through color panels on the wheel. Almost

all boost their brightness for white light--which

is what ANSI lumens measures--by adding one

or more additional panels beyond red, green,

and blue, typically using some combination of

white (a clear panel), cyan, and yellow. If you

measure the brightness for red, green, and blue

with these projectors, and then add up the mea-

surements, the total will be less than the mea-

surement for white by however much the addi-

tional panel or panels add to the total ANSI

lumen measurement.

Different DLP projectors use different color

wheels, with a variety of both arrangements of

color panels and proportion of color-panel colors

they use to create various colors on screen. Even

with a given projector, the proportions change

depending on the color mode you're using, which

is why colors look different with different color

modes.

This means that the ratio between white light

output and color light output will vary from one

DLP projector to another, and even, for the same

projector, from one color mode preset to

another. In one set of tests with business projec-

tors in the 2000 to 3500 lumen range that the

3LCD Group provided, the actual level of color

Product specificaties

Merk:	Epson
Categorie:	Beamer
Model:	5020UB
Kleur van het product:	Black, White
Ingebouwd display:	Nee
Gewicht:	8172 g
Breedte:	467.36 mm
Diepte:	396.24 mm
Hoogte:	157.48 mm
Geluidsniveau:	32 dB
Aantal lampen:	1 lampen
Soort lamp:	E-TORL
Stroombron:	AC
Plaatsing:	Desktop, Ceiling
Oorspronkelijke beeldverhouding:	16:9
Ethernet LAN:	Nee
Ondersteunde video-modi:	1080i, 1080p, 480i, 480p, 576i, 576p, 720p
Geïntegreerde geheugenkaartlezer:	Nee
Zoomcapaciteit:	Ja
Projector helderheid:	2400 ANSI lumens
Projectietechnologie:	3LCD
Projector native resolution:	1080p (1920x1080)
Geschikt voor schermmaten:	30 - 300 "
Projectie-afstand objectief:	1 - 10 m
Aantal kleuren:	1.073 biljoen kleuren
Matrix grootte:	0.74 "
VGA (D-Sub)poort(en):	1
Aantal HDMI-poorten:	2
Soort serieële aansluiting:	RS-232
Audio-ingang (L, R):	1
Composiet video-ingang:	1
Componentingang video (YPbPr/YCbCr):	1
DVI-poort:	Nee
Focus:	Handmatig
Zoom type:	Handmatig
Diafragma (F-F):	2 - 3.17
Brandpuntbereik:	22.5 - 47.2 mm
Levensduur van de lichtbron:	5000 uur
Type lichtbron:	Lamp
Bevestigingsmogelijkheid voor kabelslot:	Ja
Kabelslot sleuf type:	Kensington
Ingebouwde luidsprekers:	Nee
Stroomverbruik (in standby):	0.27 W
Ondersteunde beeldverhoudingen:	4:3, 16:10
Zoomverhouding:	2.1:1
Throw ratio:	1.34 - 2.68:1
Formaat analoog signaal:	NTSC, NTSC 3.58, PAL, PAL 60, PAL M, PAL N, SECAM
Volledige HD:	Ja
RS-232 port:	1
3D:	Ja
Lampvermogen:	230 W
Contrast ratio (dynamisch):	300000:1
Geïntegreerde TV Tuner:	Nee
Levensduur van de lichtbron (besparingsmodus):	4000 uur
AV-ingang:	Ja
Gewicht (imperiaal):	18 lbs
Stroomvoorziening via USB:	Nee
Matrix type:	3-panel (p-Si TFT actief)
Geluidsniveau (spaarzame modus):	22 dB
Afstandsbediening inbegrepen:	Nee
Wifi:	Nee
AC-ingangsspanning:	100 - 240 V
AC-ingangsfrequentie:	50 - 60 Hz
Stroomverbruik (typisch):	364 W
Type product:	Projector met normale projectieafstand
3D Ready:	Ja