Re: Overhead View Screens

[gastineau@badgerden.com (John E. Gastineau)]

This is just going to you; forward to PHYS-L if you think there is 
general interest. 

Check out http://www.ti.com/dlp/ for a list of units. 

The brightness is hard to compare, as there are several "standard" 
ways of measuring brightness. One dlp unit I've read specs for says 
it's 450 lumens color, and 1400 gray scale. SVGA units are brighter 
than VGA (more mirrors--like 480,000 mirrors total!!) 

Another benefit of DLP is that there's no black line between pixels. 


On 11 Mar 97 at 11:49, Daniel L. MacIsaac wrote:

> John,
>
> ...where do I buy one?  What brand name?  How many lumens?  I note
> that most of the TFT all-in-one projectors come in around 500-700
> lumens.  An ordinary overhead provides 2000 lumens, a high-intensity
> overhead provides 3000-4500 lumens.  Then the inverse square law
> bites you as you move away.
>
> Seriously,  who makes these DLP thingies?  We're going to build 3
> labs here and require projection technology for them that I don't
> think has been invented yet.  I'd be delighted to be wrong; it's my
> usual state :^).

--
John E. Gastineau                (304) 296-1966
900 B Ridgeway Ave.              gastineau@badgerden.com
Morgantown, WV 26505
www.badgerden.com/~gastineau