My ProView 15.4" 1280x800 HD project... - Page 9

Inkog · 7th March 2005, 11:01 PM

Here is the 'HDHTPC' idea i've been playing with... It will be a wall mount with a RF or Bluetooth KB & mouse. I'm attempting to price parts now to see if it'll fit into my budget

Oh yeah, note the gear driven focus idea. I plan on lining the chamber for the projection lens with felt. It should seal out any light leaks and make it slide nicely.

It's all to scale except for the ballast at the bottom. Anyone know the size of the LL balast off hand? I hope to keep it down there to eliminate any possible RF interference.

spamh8r - My heatsink reflector idea is shown

Hezz - I'll get those measurements for you shortly

Inkog · 8th March 2005, 01:55 AM

Hezz,

Here you go...

Hezz · 8th March 2005, 02:20 AM

Inkog,

Thank you. That's a great little drawing and a big help to me. Keep up the good work.

Hezz

Inkog · 14th March 2005, 02:48 AM

Hello all,

Just thought I'd post a update as I had expected to have some experimental results this weekend. Well my optics shipment from DIYPC got delayed again, but should ship on the 16th. I ordered my bulb and ballast already, and they should arrive this week also. So if things go as planned maybe some results next weekend.

Here is a complete list of the major parts I went with if anyone is interested:

ProView PL576ws 15.4" TTFT LCD 1280x800 (Staples)
400w S400DD MH bulb w/eBallast - 33,000 lumens / 5200k (LL)
2 x Ikea Napkin holder reflector (forgot)
2 x 330mm fl 15.5x15.5" fresnels (DIYPC)
135mm Long-Throw Projection Lens Triplet (DIYPC)
12.5x16" Front Surface Mirror (LL) - (Part of this is for another project)
15.5x15.5 IR Glass (DIYPC)
2x3' Lexan XL10 UV Polycarbonate (HomeDepot)
2 x 90mm 60CFM PC Fans (Comp USA)
Aerogate II fan controller and temp monitor (Laptops4me)

+ Lots of other odds and ends not directly related to function... but mostly form

I aquired

a copy of XP MCE 2005 and set it up this weekend with my HDTV Wonder and I am very impressed! A dedicated projector/HTPC is looking very, very good to me now. I have allways wanted a mobile PJ, and building in a HTPC would be ideal. I have been working on this idea over the weekend and think I have devised a way to be able to move forward, and complete the projector portion, as I aquire parts for the HTPC and add them in later.

Anyone else moving forward on thier ProView projects? It's been awhile since I've heard from anyone.

More updates (and pics) soon... stay tunned!

jdevo2004 · 14th March 2005, 05:43 AM

What is that Lexan XL10 UV Polycarbonate for? Is it expensive?

TaskMaster · 14th March 2005, 11:28 AM

It is used because it has a UV filter coating and no, it is under $10 at Home Depot.

jdevo2004 · 14th March 2005, 02:35 PM

can it be used instead of glass sheets? Is it strong? Will it hold up to heat and not burn or warp?

Inkog · 14th March 2005, 03:35 PM

Yes you can use it as a replacement for glass, as this is its realworld purpose.

It is very, very strong.

It will melt, but its melting point is very high. You cannot however use it very close to your light source, as that is just too hot. Sorry I do not know the exact specs off hand. I would think that 4-5" would be OK with proper cooling.

I plan to use it mostly for its UV blocking properties as my bulb does not have this protection. I will be using the IR glass closest to my bulb then the lexan next, helping to support my fresnels and keep them from warping.

Guy Grotke · 14th March 2005, 07:18 PM

One interesting point: The Lexan polycarbonate itself is a very good UV filter, but over time the UV light will turn it yellow. This is caused by damage to the polymer molecules. To make Lexan more valuable as a high security window glass replacement, they added a much better UV stop coating.

Lexan XL10 is the most common variety of this: It has the UV stop coating on one side. If you install it with the coating facing away from the lamp, it will still project your fresnels and LCD but it won't protect itself! (So it will yellow over time.) So pay attention to the label that says "Install this side out". By "out" they mean "facing the UV source" which is usually the sun.

There are several other varieties. Some have the UV stop coating on both sides. (I guess they market those in places where people don't read directions!

)

TaskMaster · 14th March 2005, 07:25 PM

I would also expect (unfilled, unreinforced) Lexan to creep over time if exposed to a load and the heat of your light engine. My point is I would still use glass to support the fresnel lenses, particularly in a vertical orientation.

14th March 2005, 05:43 AM	#85
jdevo2004 diyAudio Member Join Date: Dec 2004 Location: Canada	What is that Lexan XL10 UV Polycarbonate for? Is it expensive? __________________ nada

14th March 2005, 02:35 PM	#87
jdevo2004 diyAudio Member Join Date: Dec 2004 Location: Canada	can it be used instead of glass sheets? Is it strong? Will it hold up to heat and not burn or warp? __________________ nada

14th March 2005, 07:18 PM	#89
Guy Grotke diyAudio Member Join Date: Sep 2004 Location: Vista, CA	Lexan One interesting point: The Lexan polycarbonate itself is a very good UV filter, but over time the UV light will turn it yellow. This is caused by damage to the polymer molecules. To make Lexan more valuable as a high security window glass replacement, they added a much better UV stop coating. Lexan XL10 is the most common variety of this: It has the UV stop coating on one side. If you install it with the coating facing away from the lamp, it will still project your fresnels and LCD but it won't protect itself! (So it will yellow over time.) So pay attention to the label that says "Install this side out". By "out" they mean "facing the UV source" which is usually the sun. There are several other varieties. Some have the UV stop coating on both sides. (I guess they market those in places where people don't read directions! )

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8th March 2005, 02:20 AM	#83
Hezz diyAudio Member Join Date: Dec 2002 Location: Utah	Inkog, Thank you. That's a great little drawing and a big help to me. Keep up the good work. Hezz

14th March 2005, 02:48 AM	#84
Inkog diyAudio Member Join Date: Dec 2004 Location: Louisville, KY	Hello all, Just thought I'd post a update as I had expected to have some experimental results this weekend. Well my optics shipment from DIYPC got delayed again, but should ship on the 16th. I ordered my bulb and ballast already, and they should arrive this week also. So if things go as planned maybe some results next weekend. Here is a complete list of the major parts I went with if anyone is interested: ProView PL576ws 15.4" TTFT LCD 1280x800 (Staples) 400w S400DD MH bulb w/eBallast - 33,000 lumens / 5200k (LL) 2 x Ikea Napkin holder reflector (forgot) 2 x 330mm fl 15.5x15.5" fresnels (DIYPC) 135mm Long-Throw Projection Lens Triplet (DIYPC) 12.5x16" Front Surface Mirror (LL) - (Part of this is for another project) 15.5x15.5 IR Glass (DIYPC) 2x3' Lexan XL10 UV Polycarbonate (HomeDepot) 2 x 90mm 60CFM PC Fans (Comp USA) Aerogate II fan controller and temp monitor (Laptops4me) + Lots of other odds and ends not directly related to function... but mostly form I aquired a copy of XP MCE 2005 and set it up this weekend with my HDTV Wonder and I am very impressed! A dedicated projector/HTPC is looking very, very good to me now. I have allways wanted a mobile PJ, and building in a HTPC would be ideal. I have been working on this idea over the weekend and think I have devised a way to be able to move forward, and complete the projector portion, as I aquire parts for the HTPC and add them in later. Anyone else moving forward on thier ProView projects? It's been awhile since I've heard from anyone. More updates (and pics) soon... stay tunned!

14th March 2005, 11:28 AM	#86
TaskMaster diyAudio Member Join Date: Jan 2005 Location: USA	It is used because it has a UV filter coating and no, it is under $10 at Home Depot.

14th March 2005, 03:35 PM	#88
Inkog diyAudio Member Join Date: Dec 2004 Location: Louisville, KY	Yes you can use it as a replacement for glass, as this is its realworld purpose. It is very, very strong. It will melt, but its melting point is very high. You cannot however use it very close to your light source, as that is just too hot. Sorry I do not know the exact specs off hand. I would think that 4-5" would be OK with proper cooling. I plan to use it mostly for its UV blocking properties as my bulb does not have this protection. I will be using the IR glass closest to my bulb then the lexan next, helping to support my fresnels and keep them from warping.

14th March 2005, 07:25 PM	#90
TaskMaster diyAudio Member Join Date: Jan 2005 Location: USA	I would also expect (unfilled, unreinforced) Lexan to creep over time if exposed to a load and the heat of your light engine. My point is I would still use glass to support the fresnel lenses, particularly in a vertical orientation.

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