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Topic: Using Lens to Shorten Throw of Projector?
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Joined: Nov 18, 2008
Posts: 11
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I was wondering if anyone could help me? Would it be possible to shorten the throw of my projector by adding a lens onto the front of it.

I've done some research on Google but can't seem to find anything helpful, so I thought this would be the best place to post my question. Any help is greatly appreciated.

Thanks
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Joined: Aug 25, 2005
Posts: 2,915
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It might be possible, but it would probably be cheaper to buy a shorter throw projector
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Joined: Mar 28, 2005
Posts: 9,971
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It is possible, but .5x zoom lenses run upwards of $1,000, which is typically cost prohibitive. More often it is better to get a projector which matches your room, or to find a location for the projector that allows for proper throw distance.
AV Integrated - Theater, whole house audio, and technology consultation during the build and installation process in the Washington, DC metropolitan area.
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Joined: Nov 18, 2008
Posts: 11
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aw that sucks!

So a lens would end up costing more than if a bought a new projector with the lens?

Its just because I've had my projector in a certain room for a while now and its perfect, but I don't get to use it much as the room has to be used for other purposes. So I wanted to put it in my room which is considerably smaller but I would hate going down in size.

Could I not buy an ordinary lens from lumenlab(DIY Projectors) because I know they have a very short throw and maybe attach a piece of tube to it so as to get the right focual point?

Would a triplet lens work?

This is the lens I was thinking
http://lumenlab.com/estore/product.php?productid=16139&cat=253&page=2
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Joined: Nov 18, 2008
Posts: 11
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I found this short throw lense and it doesnt say its made for my projector but there made by the same brand.

http://www.avpeople.co.uk/pd-optoma-short-throw-lens.cfm

Maybe I could custom fit this to my projector

Does anyone know if this would work
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