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From: don@zl2tnm.gp.co.nz (Don Stokes)
Newsgroups: sci.electronics
Subject: Re: Looking for efficient LCD's (or similar)
Keywords: light transmission LCD
Message-ID: <DF4cZ3w163w@zl2tnm.gp.co.nz>
Date: 25 Mar 91 23:54:36 GMT
References: <1991Mar21.130439.4284@grep.co.uk>
Organization: The Time Machine Room
Lines: 18

vic@grep.co.uk (Victor Gavin) writes:

> Hi, can anyone point me in the direction of a LCD (or similar device)
> which has a high efficiency for the transmission of light when it is
> ``transparent'' but nearly nothing when it is ``opaque''.
> 
> From what I've been able to find out, 5% is about the norm when the
> unit is transparent (due to polarisation etc.), whereas I'm looking
> for something in the region of 30-50% (or better if possible).

Well, LCDs rely on polarisation to do their stuff.  The only real area
for improvement is the transparency of the LCs and polarising filter.
The polarisation is unavoidable.


Don Stokes, ZL2TNM  /  /                             don@zl2tnm.gp.co.nz (home)
Systems Programmer /GP/ GP PRINT LIMITED  Wellington,       don@gp.co.nz (work)
__________________/  / ----------------   New_Zealand__________________________