Lens based projector for television

Hi everyone,

I've just come across a post in ebay, for a lens based projector for normal crt based television.

eBay India: 150" TV BIG SCREEN HOME CINEMA PROJECTOR <LENS KIT> DIY (item 250346508937 end time 29-Dec-2008 14:09:45 IST)

Has anyone used this before or have any experience?

It seems quite tempting because of the price, however, i'm concerned of the picture quality due to spherical aberration, coma etc., which would affect the quality.

Please comment.

Thanks,

Nitin.

Well, if you search the net, you will get plenty of these types of ads Its actually not a projector as such but a plan to build a projector at home.

A lens commonly available at big stationary stores by name 'fresnel lens' is a thin transperent plastic sheet (A4 page) with magnifying capacity to be used by old people to read in better way. (Cost Rs150/- to Rs250/- apprx) )and plan inlcudes to build a box from card boards to cover the TV screen entirely and magnify using lens on the other side. The image will be projected inverted. left /right even if you manage top/bottom. So its a kind of DIY stuff and requires good skill & patience to build it. Output depends on the craftsmanship how perfect you have built but requires a complete darkenss as TV screen brigness used as a source. so can say good to try but may not be final.