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I was looking over an old brochure for the NEC XG 135LC and had questions on two things. The original document can be found here ->
http://www.cinenow.com/us/downloads.php3/mk,25/
Click on the download button under brochures, XG85 & XG135lc (Video Projector)
In it, the brochure states:
Liquid Coupled Optical System
The liquid coupled lens system on
the MultiSync XG135LC projector
replaces the air space between
the CRT and the lens elements with
a liquid, reducing the amount
of light lost through secondary
reflection. This results in a 40%
increase in contrast and a 20%
increase in brightness.
My understanding is that the LC option would increase contrast, but lower brightness. Granted, this is a brochure, so this is probably marketing rather than technical specs... Or would increasing the contrast allow one to crank the brightness up e.g. run the tubes harder? Seems to go against what I've read otherwise.
Also, they mention improving 3D image by adding a short persistence green tube. Maybe Curt has seen one of these... Would this work for HT? Are the tubes you (Curt) put in already short persistence,? Are they even available?
MultiSync XG Series projectors can be
optimized for 3D image projection with the
addition of a short persistence green phosphor
tube. “Persistence†refers to the length of time
the CRT phosphor glows after the electron
beam has stopped projecting electrons onto
its surface. Phosphors with longer persistence
have a higher light output. However, long
persistence also can cause a “ghosting†effect,
which occurs when the phosphor continues
to glow from the previous image while a new
image is projected. Because 3D imaging
systems have a very fast refresh frequency,
they require projectors with short-persistence
phosphors in the CRT. Adding the short-persistence
phosphor option to the CRT
of MultiSync XG Series projectors, ensures
optimum performance with 3D imaging systems.
This tube is available as an upgrade for
your MultiSync XG Series projector or can be
purchased with the tube already installed
(model numbers XG85S, XG135S).
Curious to find out.. thanks!
Marshall
http://www.cinenow.com/us/downloads.php3/mk,25/
Click on the download button under brochures, XG85 & XG135lc (Video Projector)
In it, the brochure states:
Liquid Coupled Optical System
The liquid coupled lens system on
the MultiSync XG135LC projector
replaces the air space between
the CRT and the lens elements with
a liquid, reducing the amount
of light lost through secondary
reflection. This results in a 40%
increase in contrast and a 20%
increase in brightness.
My understanding is that the LC option would increase contrast, but lower brightness. Granted, this is a brochure, so this is probably marketing rather than technical specs... Or would increasing the contrast allow one to crank the brightness up e.g. run the tubes harder? Seems to go against what I've read otherwise.
Also, they mention improving 3D image by adding a short persistence green tube. Maybe Curt has seen one of these... Would this work for HT? Are the tubes you (Curt) put in already short persistence,? Are they even available?
MultiSync XG Series projectors can be
optimized for 3D image projection with the
addition of a short persistence green phosphor
tube. “Persistence†refers to the length of time
the CRT phosphor glows after the electron
beam has stopped projecting electrons onto
its surface. Phosphors with longer persistence
have a higher light output. However, long
persistence also can cause a “ghosting†effect,
which occurs when the phosphor continues
to glow from the previous image while a new
image is projected. Because 3D imaging
systems have a very fast refresh frequency,
they require projectors with short-persistence
phosphors in the CRT. Adding the short-persistence
phosphor option to the CRT
of MultiSync XG Series projectors, ensures
optimum performance with 3D imaging systems.
This tube is available as an upgrade for
your MultiSync XG Series projector or can be
purchased with the tube already installed
(model numbers XG85S, XG135S).
Curious to find out.. thanks!
Marshall