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[OM] OT: LCD apeture???

Subject: [OM] OT: LCD apeture???
From: "Dirk Wright" <wright@xxxxxxxxxxxx>
Date: Mon, 27 Mar 2000 09:40:18 EST
I was wondering about a Liquid Crystal Display used as a replacement 
for the mechanical diaphram in lenses? My idea is that the lens would 
have a LCD array of concentric circles embedded in a transparent lens 
element, each set of circles turned off or on electrically to achieve 
various F stops. When the circles were on, they would block light 
transmission, off would allow it. The circuIar array would still obtain 
the depth of field effects of a mechanical diaphram. I did a patent 
search but turned up nothing so far. For you patent-savvy people, I 
searched in class 359, subclasses 738, 739, and 740. 

Be seeing you.


Dirk Wright

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