headtracker / mag lens / macro lens (linaccess at yokoy.de)

[linaccess at yokoy.de]

Hello Mary Lou,

On Tue, 04 Sep 2007 12:13:34 -0400
Mary Lou Jepsen <mljatolpc at gmail.com> wrote:

> lenses are cheap.  it depends on what exactly you are doing with the
> software.

tracking a little shiny point at the head and transform it into mousepointer movements. Here is the description:
http://www.olpcaustria.org/mediawiki/index.php/Headtracker

With the XO camera we typicaly use only 90x30 pixel from the 640x480 pixel. So I want to magnify the operative area with a lens.
Here is a picture of the area:
http://www.olpcaustria.org/mediawiki/index.php/Headtracker#magnification_lens


 
> American Science and Surplus is a good way to experiment:
> http://sciplus.com/category.cfm?subsection=21
>

thank you for that link. A plastic lens is what I am searching for.

 
> then to china for mass production at very low price point.
> 
> 
> - Mary Lou
> 
> 

regards,

yokoy
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