[chbot] LED displays coloured filters

[Colin Isenman]

You could consider a plain grey polarizing film instead of colour filters. The polarization should significantly reduce reflections and hence improve the contrast of the display. To be really slick, an antireflective coating on top would be nice. But maybe not necessary unless you want sunlight readable.


Colin Isenman cisenman at hotmail.com


________________________________
From: chchrobotics-bounces at lists.linuxnut.co.nz <chchrobotics-bounces at lists.linuxnut.co.nz> on behalf of Peter Ellens <ellensp at gmail.com>
Sent: Friday, 13 January 2017 9:26 p.m.
To: Christchurch Robotics
Subject: Re: [chbot] LED displays coloured filters

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On 13/01/17 20:21, Volker Kuhlmann wrote:
> It has become obvious with my display experiments that the appearance
> and conttrast of LED displays is significantly improved by the use of
> colouored filters. That's why commercial clocks etc always have a dark
> tinted front panel - it transmits the display colour but blocks the
> background, significantly increasing contrast and readability.
>
> Has anyone come across coloured tinted translucent plastic foils? I have
> a feeling I've seen them a long time ago.
>
> I'll need them in blue, pure green (not yellow-green), dark yellow, and
> red, and would appreciate a note if someone happens to have seen
> something like this, before I trawl all the shops...
>
> Thanks,
>
> Volker
>
> I'll have it with me on Monday.
>


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