| htgeek |
I am starting to assemble my DIY Projector I have a light source and a psone screen.
Which lens will work best?
http://www.surplusshed.com/pages/item/l3297.html
or
http://www.surplusshed.com/pages/item/l3384.html
With these fresnels?
280mm x 280mm
from www.3dlens.com
About 3.5 meters wall to wall
Any help would be appreciated. |
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| Guy Grotke |
With a 9" fl lens, you would get a 62" diagonal image from 120" lens to screen. That is about as big as you should try to make a PSone LCD image, because of the low resolution. That lens is also much wider than the first lens, so you would get more light through it.
With 120" throw distance, your LCD-to-lens distance would be 9.7". That is 247 mm.
I would use a 220 mm fl fresnel as your field fresnel, and as short a fl fresnel as you can find as your condensor fresnel. Or you could use another 220 mm fl fresnel as a condensor fresnel with a pre-condensor lens. |
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