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rguerard
Joined: 18 Jan 2009
Posts: 10
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| Posted: Sun Jan 18, 2009 10:44 pm Post subject: My 1080p LCD projector experiment |
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Hey guys, im bored so i'll post this here...
I've decided I want to start building 1080p projectors...
my base lcd is going to be a 15.4 inch WUXGA laptop screen...
heres my design. Anyone have any questions comments or suggestions?
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Sun Jan 18, 2009 10:49 pm Post subject: |
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What brand and resolution is the LCD panel? 15.4 inch seems small for a 1080P panel.
Is it 1920x1080 or 1920x1200. If it's the latter can it correctly display 1080P leterboxed within the panel or does it stretch to fit as most do?
What is the input on the panel? VGA or DVI or both? If it's DVI-D does it have HDCP compatibility?
What type of light bulb is that?
What type of culminating lenses are those? Plastic or glass?
Who makes the projection lens and what's the focal length and f/stop?
Are those first surface mirrors? If not are they at least optical grade? Who makes them?
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rguerard
Joined: 18 Jan 2009
Posts: 10
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| Posted: Sun Jan 18, 2009 10:54 pm Post subject: |
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its a 1920x1200 but the LCD controller im going to be getting will support 1920x1080 1:1 pixel mapping
the bulb is a 575 watt metal halide lamp (6500k colour)
the lenses are 330 FL glass fresnel lenses
and the lens is a 320 FL projector lens from lumenlabs.com
(not sure of the f/stop)
and yes im going to be using FS mirrors hopefully having 94%+ light reflection
EDIT:
oh and the panel has Component DVI VGA s-video RCA and HDMI
(im using a pixelworks 338 controller (http://diyprojectorkits.com/welcome/index.php?page=shop.product_details&flypage=flypage-ask.tpl&product_id=94&category_id=10&option=com_virtuemart&Itemid=85))
Last edited by rguerard on Sun Jan 18, 2009 11:23 pm; edited 2 times in total
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Zebu Fellenz
Joined: 21 Dec 2006
Posts: 2567
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| Posted: Sun Jan 18, 2009 10:56 pm Post subject: |
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How will you be treating the inside of the box for stray light? What are the specs for the LCD panel you'll be using?
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Sun Jan 18, 2009 10:58 pm Post subject: |
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Well there you go. I asked some questions. 
Good answers.
I was going to build one of these 3 years ago. Then I discoverd this web site and CRT front projection. Better picture than LCD and black is black not grey. Still it looks like a fun project if you have the time for it.
Who makes the LCD panels? VGA or DVI-D or both? HDCP?
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rguerard
Joined: 18 Jan 2009
Posts: 10
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| Posted: Sun Jan 18, 2009 10:59 pm Post subject: |
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the panel is a laptop LG LCD
(and yes my passion is CRT projection as well, I just feel like building something haha)
not quite sure of the contrast ratio and refresh rate etc...
| Quote: | EDIT:
oh and the panel has Component DVI VGA s-video RCA and HDMI
(im using a pixelworks 338 controller (http://diyprojectorkits.com/welcome/index.php?page=shop.product_details&flypage=flypage-ask.tpl&product_id=94&category_id=10&option=com_virtuemart&Itemid=85)) |
Last edited by rguerard on Sun Jan 18, 2009 11:01 pm; edited 2 times in total
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Sun Jan 18, 2009 11:00 pm Post subject: |
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| rguerard wrote: | the panel is a laptop LG LCD
(and yes my passion is CRT projection as well, I just feel like building something haha) |
What will the connection to the panel be analog VGA or Digital DVI?
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rguerard
Joined: 18 Jan 2009
Posts: 10
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| Posted: Sun Jan 18, 2009 11:08 pm Post subject: |
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| Zebu Fellenz wrote: | | How will you be treating the inside of the box for stray light? What are the specs for the LCD panel you'll be using? |
the light will actuallt be blocked off entirely except for the light path you see...
i will probably put a condensing lens infront of the lamp aswell to better direct the light
(PS: answers to the inputs have been edited on my previous post)
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drice1234
Joined: 07 Oct 2006
Posts: 1309
Location: Allen, Texas
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| Posted: Sun Jan 18, 2009 11:53 pm Post subject: |
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I have a lens from a Lumenlab kit that I had purchased some time ago. I will donate it to your cause for the cost of shipping if you need it. I don't recall which lens it was. I also have the metal halide bulb and ballast if your interested in them but I would need some cash for them. (They were not cheap)
Dan
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rguerard
Joined: 18 Jan 2009
Posts: 10
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| Posted: Mon Jan 19, 2009 12:41 am Post subject: |
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edit deleted
Last edited by rguerard on Tue Nov 12, 2024 8:58 am; edited 1 time in total
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Person99
Joined: 09 Mar 2006
Posts: 4899
Location: Flower Mound, TX
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| Posted: Wed Jun 10, 2009 10:02 pm Post subject: Re: My 1080p LCD projector experiment |
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| rguerard wrote: | | Anyone have any questions comments or suggestions? |
I'll be flamed, but here is one: don't bother. These types of homemade PJs look like crap. You can get a good used 720p digital that will look FAR better than this. I've done shoot-outs between (better than this) low end 1080p LCD PJs and very good 720p DLP PJs and the good 720p beats the bad 1080p everytime. Resolution isn't everything boys!!!!
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Dave
A train station is where the train stops. A bus station is where the bus stops. On my desk, I have a work station....
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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: Thu Jun 11, 2009 3:56 am Post subject: Re: My 1080p LCD projector experiment |
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| Person99 wrote: | | rguerard wrote: | | Anyone have any questions comments or suggestions? |
I'll be flamed, but here is one: don't bother. These types of homemade PJs look like crap. You can get a good used 720p digital that will look FAR better than this. I've done shoot-outs between (better than this) low end 1080p LCD PJs and very good 720p DLP PJs and the good 720p beats the bad 1080p everytime. Resolution isn't everything boys!!!! |
In fact, resolution is about the LEAST important thing (assuming you have at least 720p). Contrast, accurate primary colours is far more important.
Hey Dave! Glad to see you back!
Kal
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Ben851
Joined: 13 Sep 2008
Posts: 221
Location: Ottawa, Ontario
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| Posted: Wed Jul 29, 2009 12:49 pm Post subject: |
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But where's the fun in taking something out of a box and having it work automatically? I could see this as being more about the build than the final product...
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Ben
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bulletfast
Joined: 12 Jul 2009
Posts: 25
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| Posted: Mon Oct 05, 2009 12:52 am Post subject: |
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Building both my home built projectors was a blast! One was made of wood, and the other was a retro fit of a 90's table top projector. Like Ben said the build is a blast and the fact that I can get 10,000 hours out of a $25 bulb is priceless  . If you're interesting in seeing my setups check out both pages of this posting.
https://www.curtpalme.com/forum_archived/viewtopic.php@t=16983.html
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Person99
Joined: 09 Mar 2006
Posts: 4899
Location: Flower Mound, TX
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| Posted: Tue Dec 08, 2009 9:18 pm Post subject: |
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| bulletfast wrote: | Building both my home built projectors was a blast! One was made of wood, and the other was a retro fit of a 90's table top projector. Like Ben said the build is a blast and the fact that I can get 10,000 hours out of a $25 bulb is priceless . If you're interesting in seeing my setups check out both pages of this posting.
https://www.curtpalme.com/forum_archived/viewtopic.php@t=16983.html |
True, but an interest in home theater is usually an interest in watching movies well presented, not a "DIY trumps quality persuit." If DIY is more important to you than quality, then yes; but I must say, that is a very odd approach to home theater!
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Dave
A train station is where the train stops. A bus station is where the bus stops. On my desk, I have a work station....
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