National Portrait Gallery Outdoor Projection - AVS Forum
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post #1 of 7 Old 07-24-2012, 12:51 PM - Thread Starter
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Hello, I am a design student working with the Smithsonian National Portrait Gallery in Washington DC. We are developing a tolerance project to coincide with a Martin Luther King exhibit. Our concept involves projecting moving and/or still images onto the building. The attached image displays what we are trying to accomplish. I am in search of technical insight as to how this may be achieved. I am also interested in the cost of such a project. Please share any and all insight relevant to this project. Thank you for your time. proj corner.jpg 420k .jpg file
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post #2 of 7 Old 07-24-2012, 01:09 PM
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Is this a temp or permanent setup?

Here are the basics:

1. Projectors have lenses, and depending on the lens, that will determine size. You will need to know where the projector will be located (distance from building). Also, desired image size. From there, the throw of the projector can be determined.
2. If outdoor, being where it is, you have to protect it. Not only from theft, but extreme temp changes, moisture, etc...
3. How long each day will it run? Projectors use lamps and they will burn out and need to be replaced. For the size of projector you will likely need, that may get costly depending on how long you run it.
4. I assume this will be at night only, which it has to, because it does not matter what your budget is, the sun will always win.
5. You will also have to think of things like signal. It looks like there are 2 roads...you have to get whatever source to each projector. I don't know the building, but with crossing major streets it would seem you might be getting the local town involved (unless perhaps you located the source by each projector...not sure).

I will tell you as a blanket...not cheap. Based on the rendering, you are looking at VERY long throw lenses, a LOT of light, and so it would not surprise me if you are $100k or more.

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post #3 of 7 Old 07-24-2012, 01:10 PM
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Forgot...the reason I ask if temporary is you might want to rent if so.

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post #4 of 7 Old 07-24-2012, 02:38 PM - Thread Starter
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Thank you for you feedback. I have attached a modified rendering that places the projectors on the museum grounds and reduces the throw distance. I am thinking each projector will have its own source, possibly a dvd player.

Can you name a projector that might be able to handle this job?

I have found these protective boxes.
http://www.displaydevices.com/products/staging_solutions/epe.html
Is this the right Idea?

proj corner.jpg 421k .jpg file
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post #5 of 7 Old 07-24-2012, 06:32 PM
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Yeah that is the idea on the box...I would bet they are not cheap. Also consider things like vandalism, damage, theft, etc... Not saying don't do it, just things to think about.

The throw in that case is much shorter, which would likely open up more cost effective options. But, it still depends on that ratio...the throw distance vs. the screen size. Any ideas on rough numbers we are dealing with?

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post #6 of 7 Old 07-25-2012, 07:15 AM - Thread Starter
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Throw distance - 20 yards or 60'

Image Size - 60' x 40'
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post #7 of 7 Old 07-25-2012, 12:55 PM
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First, that is not a ratio. That works out to 1.5:1. Standard TV back in the day is 1.33:1 (normal tube sets). Current HD is 1.78:1.

Let's assume that width regardless, that is a 1x throw, which is a VERY short throw. To light a screen that large, you are probably over $100k without even trying to go for really good stuff, especially being outside.

Not talking you out of it, but you are going to have to drop a boatload.

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