From: minerva!diego@beaver.cs.washington.edu (Diego Montefusco)
Subject: Re: TECH: VPL eyephone stats
Date: Tue, 14 Jul 92 10:14:09 CET



In <9207122236.AA06792@milton.u.washington.edu>, on Jul 12, you wrote:

> From: jew5001@zeus.tamu.edu (WILLIAMSON, JOHN EDWARD)
> Subject: TECH: VPL eyephone stats
> Date: 10 Jul 1992 15:15:06 -0500
> Organization: Texas A&M University, Academic Computing Services
> 
> I have two quick questions.
> First, what are the stats on the VPL eyephones in pixels?
> 
> Second, I came across an editoral in _Computer Graphics World_ by
> Lopicolo (sp?) last year in which he states that it has been
> cacluated that the resolution in the VPL eyephones is 1/3
> that of a legally blind person.  Where did he get that stat from?

VPL currently sells two model of EyePhone:

Model LX		442 x 238
Model HRX		720 x 480

PLEASE NOTE that those number are PRIMARLY COLORED pixel, so they are
the SUM of red, green and blue elements. The actual resolution is therefore
MUCH lower. Depending on the kind of LCD employed, i.e. the geometrical
disposition of the RGB elements, you have to divide those numbers by a certain
factor. Usually dividing by 1.73 is correct.

This therefore gives those ACTUAL screen resolutions:

Model LX		255 x 137
Model HRX		404 x 277

This is the information I have; hope it's correct!

Regarding that article, note that, being written some time ago, it deals
with VPL old model (Model 2), now discontinued, and that new models are
much better.

Diego Montefusco


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