Hi, I'm new and haven't had time to do much research. This is available at auction and I was wondering if the following lense could be useable for building a projector?

"This lens was taken from a Sony Tri Colour Projector, has 2 X lens adjustment knobs to focus your image.
Total lens enclosure measures 230mm long ( depending on position of focus adjustment) and the lens is 130mm in Diameter. Lens is made by US Precision Lens, now known as 3M Precision Optics"

any link to it?

Those lenses have virtually no field of view and short throws. They are designed to be placed directly on a small CRT. They are not suitable for this project.

yup brain said it.

Hi, thanks for the reply. I think I'll play it safe and build the projector only using tried and tested parts!

yes that would be the best thing, believe me for the better.