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From: silver@cup.portal.com (Jim B Howard)
Newsgroups: sci.electronics
Subject: Big Screen Projector from tiny LCD TV ?
Message-ID: <32906@cup.portal.com>
Date: 17 Aug 90 05:35:35 GMT
Distribution: usa
Organization: The Portal System (TM)
Lines: 23


 
I wonder if it would be possible to take one of the better made pocket
LCD TV's , such as the Sony Watchman, and remove the LCD element far
enough away to allow the insertion of a really bright backlight, such
as a small quartz lamp or something, and then focus the light with a 
few simple lenses to give you a large projected color image.
 
(quite a long sentence, eh?)
 
I've experimented with taking cheap calculators apart, and removing the
foil backing from the LCD element, shiing a flashlight through it,
and using an overhead projector lens assembly to put the image on the wall.
It works fine, very readable.  I've even done this with my old Casio 
7000 graphing calculator.   The question is, do they attach the 
LCD elements of those little TV's so strangely that there is no chance
of relocating it enough to do what I propose?  I don't want to spend 
299$ to get one of those things and find out they've welded the element
in place. 
 
This is a very simplified method of achieving what those expensive TV
projectors (such as the Sharp one ~ 5000$) do.  I think.