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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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WanMan
Joined: 19 Mar 2006
Posts: 10270
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| Posted: Fri Jan 29, 2010 12:35 pm Post subject: |
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Why on earth it took this this long I'll never know.
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CIR Engineering
Joined: 25 Aug 2008
Posts: 4269
Location: Chicago USA & Berlin Germany
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| Posted: Fri Jan 29, 2010 2:12 pm Post subject: |
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They say to locate the projector head "away from noise and heat..." but the projector bulb will need a fan anyway and that is where most of the noise and heat comes from.
craigr
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Fri Jan 29, 2010 2:17 pm Post subject: |
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But, Craig - The bulb and fan are in the rack-mount box, not in the projector head... So, presumably the noise and heat can be in a completely separate room from the viewing room.
It's like a star ceiling... The box with the bulb and fan aren't where the light comes out...
SC
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MikeEby
Joined: 24 Jun 2007
Posts: 5237
Location: Osceola, Indiana
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| Posted: Fri Jan 29, 2010 2:20 pm Post subject: |
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| CIR Engineering wrote: | They say to locate the projector head "away from noise and heat..." but the projector bulb will need a fan anyway and that is where most of the noise and heat comes from.
craigr |
Yeah...I didn't get that either...Some of the electronics won't be exposed to the heat...that could be a plus...I would not really consider it a huge revelation.
Edit: I see so the cable is some kind of fiber optics gizmo.
Mike
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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| Posted: Fri Jan 29, 2010 2:34 pm Post subject: |
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| ecrabb wrote: | | It's like a star ceiling... The box with the bulb and fan aren't where the light comes out... |
You're absolutely right! I didn't believe it until I looked at the pictures. I wonder what the quality is like when you pass light like that through a "light pipe"? With a star ceiling, who cares... but with a projector you want really good control of the light parameters and gamut.
There would certainly be zero noise in the lens portion of the split pack. There's no reason to have a fan at all. In fact, done right this setup would be 100% silent. Very cool.
One thing I've never liked about digitals when they first came out is that they always seemed to be trying to go smaller and smaller which resulted in basically "cooking" a lot of the components and filters in the projector. They're doing a lot better these days which projectors that are approaching the size of a small CRT projector (like the JVC RS1/2/10/20 and the Sony SXRD's). This sort of split pack setup would let you put a bigger box in the back room where size is not important. Bigger size means that it can be more rugged and better cooled (if designed right).
Kal
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WanMan
Joined: 19 Mar 2006
Posts: 10270
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| Posted: Fri Jan 29, 2010 6:26 pm Post subject: |
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| ecrabb wrote: | But, Craig - The bulb and fan are in the rack-mount box, not in the projector head... So, presumably the noise and heat can be in a completely separate room from the viewing room.
It's like a star ceiling... The box with the bulb and fan aren't where the light comes out...
SC |
There is an alternative to this in decoration. There is a place near me that has this painter that comes out and produces a sky scene at night. He uses fluorescent paint and black lights to achieve a similar, but not same, effect.
| MikeEby wrote: | | CIR Engineering wrote: | They say to locate the projector head "away from noise and heat..." but the projector bulb will need a fan anyway and that is where most of the noise and heat comes from.
craigr |
Yeah...I didn't get that either...Some of the electronics won't be exposed to the heat...that could be a plus...I would not really consider it a huge revelation. Edit: I see so the cable is some kind of fiber optics gizmo.
Mike |
Its a liquid.
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dturco
Joined: 06 Feb 2009
Posts: 3778
Location: Eastern Shore Maryland
TV/Projector: Runco DLP VX-3000i Marquee 9500 parts doner
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| Posted: Fri Jan 29, 2010 7:08 pm Post subject: |
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| WanMan wrote: | | ecrabb wrote: | But, Craig - The bulb and fan are in the rack-mount box, not in the projector head... So, presumably the noise and heat can be in a completely separate room from the viewing room.
It's like a star ceiling... The box with the bulb and fan aren't where the light comes out...
SC |
There is an alternative to this in decoration. There is a place near me that has this painter that comes out and produces a sky scene at night. He uses fluorescent paint and black lights to achieve a similar, but not same, effect.
| MikeEby wrote: | | CIR Engineering wrote: | They say to locate the projector head "away from noise and heat..." but the projector bulb will need a fan anyway and that is where most of the noise and heat comes from.
craigr |
Yeah...I didn't get that either...Some of the electronics won't be exposed to the heat...that could be a plus...I would not really consider it a huge revelation. Edit: I see so the cable is some kind of fiber optics gizmo.
Mike |
Its a liquid. |
I wonder if it's glycol that will yellow over time
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MikeEby
Joined: 24 Jun 2007
Posts: 5237
Location: Osceola, Indiana
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| Posted: Fri Jan 29, 2010 7:11 pm Post subject: |
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| kal wrote: |
There would certainly be zero noise in the lens portion of the split pack. There's no reason to have a fan at all. In fact, done right this setup would be 100% silent. Very cool.
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Sealed too...No chance of dust.
Mike
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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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| Posted: Sat Jan 30, 2010 4:59 pm Post subject: |
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Not sure where they have placed color wheel, if it have one.
If it's inside projector unit it will have nasty whine...
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Sat Jan 30, 2010 5:16 pm Post subject: |
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Ile, I'd take the subtle whine of a color wheel over the loud almost-white NOISE from my CRT projector any day - if I liked the image and I could afford it.
This is interesting... Saw a couple of links in a forum post and did a little more reading on the Liquid Light Guide - LLG...
On this page:
http://www.newport.com/store/genproduct.aspx?id=378731&lang=1033&Section=Detail
| Quote: | | DUV liquid light guides have a limited lifetime. Formation of bubbles in the liquid leads to a significant drop in throughput. Storage in a cold and humid environment extends the lifetime. The long term operational temperature range of these guides is 5 to 30 °C. Table 1 shows the average useful life of the DUV light guides. |
The table then shows average useful life spans of 3 years, 3 years, and 1 year for 3, 5, and 8mm core diameters, respectively.
1 year? Ouch!!! OTOH, the 3-year life spans match up perfectly with a typical digital.
Here's some prices... How about $500 for an 8-footer (2.5m):
http://www.edmundoptics.com/onlinecatalog/displayproduct.cfm?productid=1324
I guess like anything, it'll be über expensive at first, then fall when there's competition and economy-of-scale (if adoption happens).
This is interesting, too:
So, the light guide by itself has about an 20% light loss, plus whatever happens at each end of the optical system.
SC
Last edited by ecrabb on Sat Jan 30, 2010 5:32 pm; edited 1 time in total
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CRT_Ben
Joined: 28 Aug 2006
Posts: 1684
Location: Northern Virginia
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| Posted: Sat Jan 30, 2010 5:30 pm Post subject: |
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You mean a 20% light loss? I think you could hook up a clear tube (like for fishtanks) and get less than 80% loss
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Sat Jan 30, 2010 5:33 pm Post subject: |
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Yes, I meant 20% loss, smart ass.
Edited.
SC
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WanMan
Joined: 19 Mar 2006
Posts: 10270
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| Posted: Sun Jan 31, 2010 2:49 am Post subject: |
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Seems overly expensive if you ask me. Heck, we are not talking about commercial grade transmission equipment with light having to travel 45-50 miles. I would think a 3-8mm flexible tube filled with multimode fiber optic cable with the ends unified could do an acceptable transmission over a few hundred meters.
Even with 50% light loss that puts a DLP light engine with a lamp efficiency implementation on the same dang playing field as LCD front projection. Keep in mind the light from LCD projection lamp is polarized.
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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Thu Feb 04, 2010 6:28 pm Post subject: |
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This is pretty interesting for our use, though the prices on normal 1080p projectors are so low that there'd have to be significant advantages to warrant the cost - I'm presuming there's going to be a 5x markup at least. I put in an inquiry with them... if we end up with one I'll post here, of course!
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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Thu Feb 18, 2010 12:55 pm Post subject: |
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I inquired with those guys and got a call back from a US-based salesdude. He didn't have pricing information, but said he'd get in touch in a few months when he did. Well, that was useful! 
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jonyroger
Joined: 21 Jul 2010
Posts: 4
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| Posted: Wed Jul 21, 2010 9:10 am Post subject: |
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It seems too expensive if you ask me. Heck, we are not talking about light transmission equipment commercial grade having to travel 45-50 miles. I think a flexible tube multimode fiber optic 3-8mm filled with the ends could make a unified transmission acceptable a few hundred meters. Even with 50% loss of light is a DLP engine light efficiently implementing the lamp on the same playing field dang in LCD front projection. Consider the light of the LCD projection lamp is polarized.
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jocosaevans
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| Posted: Mon Aug 02, 2010 9:46 am Post subject: |
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We are not talking about the business of quality teams transmission of light has to travel 45-50 miles. I think the hose of a multimode fiber three full 8mm end could make a unified transmission acceptable to a few hundred meters. Even with a loss of 50% of light is a light engine DLP effective implementation of the lamp on the floor, even in LCD front projection Dang. Consider the light of the LCD projection lamp is polarized.
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