Filtration

Show and tell for your homebrew nv projects. DIY 'Stickies' here too.
snipertez
Posts: 49
Joined: 01 Jan 2014, 10:20
Location: Devon, near Exeter

Filtration

Postby snipertez » 13 Sep 2017, 06:44

Hi folks, what are you peeps using to dampen down the glow from our monitors ?

And where are you getting it from ?

Only want some small bits for a 5" monitor.

Many thanks.

wall90
Posts: 65
Joined: 22 Feb 2014, 17:04
Location: bedfordshire

Re: Filtration

Postby wall90 » 13 Sep 2017, 11:48

I used window tint(stick on )called at my local car tinting workshop asked if they had any offcuts told him what it was for and he got me some out of a bin.just taped it in position to try it before I stuck it on perminatly

User avatar
Clunge
Posts: 185
Joined: 08 Apr 2014, 23:32
Location: Staffs

Re: Filtration

Postby Clunge » 13 Sep 2017, 22:23

If you search for - lighting gel filter - on your favourite mass selling site, you should get a good choice.

I've just spotted this: http://www.ebay.co.uk/itm/Theatre-DJ-Lighting-Colour-Filter-Gel-Medium-Red-027-/371696086178?hash=item568ad02ca2:g:39wAAOSwo0JWOibZ

The seller has put a graph showing that that filter ONLY lets red light through.

Why would a deep red filter be better than a neutral density (window tint) filter?

For the same reason WW2 fighter pilots used to use red lights or wear red goggles before night missions...

https://biology.stackexchange.com/questions/2075/does-red-light-preserve-your-night-vision

Edit: If you PM me your name and address, I'll send you a 5" monitor sized bit, when it arrives in a day or 3.

Like you, I'm fed up with monitor glare and also fed up with losing night-vision in my right (photon and DIY NV eye)

EDIT 16 Sept: I've tried the filter I linked to and it works - perhaps a little too well - night vision is almost totally preserved, but it's a little too dense and screen menu items may be difficult to see against some backgrounds. see below...
Last edited by Clunge on 16 Sep 2017, 08:18, edited 1 time in total.

snipertez
Posts: 49
Joined: 01 Jan 2014, 10:20
Location: Devon, near Exeter

Re: Filtration

Postby snipertez » 14 Sep 2017, 12:48

Cheers for the info guys.

Thanks Clunge PM sent :thumbup:

User avatar
Clunge
Posts: 185
Joined: 08 Apr 2014, 23:32
Location: Staffs

Re: Filtration

Postby Clunge » 15 Sep 2017, 15:15

I've just posted you some 'deep red'.

I think it will lessen glare, though you may need to whack up the brightness a bit.

But I'm more interested in knowing whether it helps preserve your night-vision.

You know, when you take your eye(s) away from a scope or screen, to find that you can't see f*** all anymore.

sauer
Posts: 160
Joined: 15 Nov 2012, 20:44
Location: Angus scotland

Re: Filtration

Postby sauer » 16 Sep 2017, 05:33

I got a piece of yellow cellophane from Phoenix and fitted to my monitor and it made huge difference

Paul

snipertez
Posts: 49
Joined: 01 Jan 2014, 10:20
Location: Devon, near Exeter

Re: Filtration

Postby snipertez » 16 Sep 2017, 07:43

Clunge wrote:
But I'm more interested in knowing whether it helps preserve your night-vision.


Me too :crazy:

Many thanks again and I'll report back once I've tried it out.

Cheers

User avatar
Clunge
Posts: 185
Joined: 08 Apr 2014, 23:32
Location: Staffs

Re: Filtration

Postby Clunge » 16 Sep 2017, 08:43

I tried that deep red (gel medium red 027)filter on my Photon and it works - perhaps too well.

Good view with the brightness turned up.
No glare.
Night vision very well preserved when you come away from the screen.

However, some menu items are invisible or difficult to see against some backgrounds. Also brightness has to be near full.

In retrospect, and looking at the provided spectra, I think this filter: http://www.ebay.co.uk/itm/Theatre-Craft-Lighting-Colour-Filter-Gel-Bright-Red-026-/260952763976?hash=item3cc1ff2e48 would be better.

Those looking for amber, there is a "Deep Golden Amber" with a brighter spectrum here: http://www.ebay.co.uk/itm/Theatre-Craft-Lighting-Colour-Filter-Gel-Deep-Golden-Amber-135-/370584302423?hash=item56488bb357 though I'm sure the night vision preservation would not be as good.


Return to “DIY Nightvision”

Who is online

Users browsing this forum: No registered users and 26 guests