I want to build a projector for commercial use ,so I need a very small distance(about 1 meter) between screen(4 meters weigth) and rear projector.Is it possible?

Anything is possible with money, you will have to figure out your throw distance based on LCD size, and fold the Image, I have made a smaller RPTV its in the forums just search RPTV. and then you will need one huge mirror with your requirements.

How much will cost me this projector guide?(tehnical guide)

I need a complete guide :lens and mirrors type and dimensions ...everything.

i want to buy a guide like this

Unfortunately for a RPTV there is no real DIY Guide, you have to design it yourself like i did, and use a standard type DIY LCD.

i am not in the position to create this design.i want someone to create for me and i want to pay him.

I think it might be hard to get someone to take the liability to design it for you if they have not built one before. They prob. would not want to take the liability for it.

mm, 1 meter trhow, 4 meters wide image it is what you mean?


this would be more than 130 degrees of field of view on the projection lens, the ones we work with have like 50 degrees in the best of the case. Untill you find that lens, forget it.

The Delta lenes have the fov but for small lcd's or crt's

Joe

Hi

why we use fresnel lense in DIY Projector ?

Is it prevent to hit LCD or It's for amplifiying light source for LCD ?

Thanks.