Projected image over physical screen?

[Dav333]

Do you think it would be possible for a ipod sized device or small notebook to project an image rather then have an actual screen?

So you could carry it in your pocket & when turned on the desplay could be massive like 50inches. Something holographic or what youd expect in the movies.

Would be so great if the image was just as clear as LCD.

[fasterthanjoao]

Possible? Absolutely! In fact, projectors like this already exist.
http://www.optoma.co.uk/Pico.aspx
is one such example of a mini-sized projector.

Samsung presented a phone with a built-in projector this year at CES:
http://www.engadget.com/2010/02/15/samsung-beam-halo-hands-on/

There are many others in the works.