I Can’t Use Screens, but a Projector Works—Is Polarization the Hidden Culprit?

evthelegend

I’ve tried almost every type of screen out there—LCD, OLED, and even E Ink devices like the Tab Ultra—and they’re all unbearable. But somehow, I can tolerate a DLP projector, even though it uses PWM. That makes no sense to me.

Is it because projectors don’t rely on polarized light like most modern screens? Could polarization be the thing triggering my symptoms? Or are there other factors about projectors that make them easier on the eyes compared to regular displays?

If anyone has insight or experience with this, I want to know. What makes a projector so different, and why can I tolerate it when I can’t stand anything else? Let me know your thoughts.

I use a Vivitek d554 primarily.

Seagull

evthelegend

Polarisation might be part of it for you, though there probably isn't any polarisation in e-ink screens - I could be wrong, easy to test with some polarised film or glasses. There are some big threads on here on polarisation that are worth reading if you haven't already.

There are two other factors to consider, people sit far away from projectors which can help with eye defects, and the resolution of your projector is low which could help a bit too. I used to have a tv that was much more comfortable when watching non hd channels.

simplex

You can try another projectors to say for sure that "projectors are safe"

evthelegend

simplex yes tried multiple all safe

moonpie

Color wheel: 1DLP vs 3DLP
Light source: lamp vs led vs laser

https://en.wikipedia.org/wiki/Digital_light_processing

Educate yourself on what a "DLP projector" is before declaring them all "safe."

evthelegend

moonpie im just saying mine and others' work for me grow a brain

vivitek d554

The entirety of your profile is you disagreeing with people. What a guy, lol.

evthelegend

moonpie also if you read the replies you would see that I have tried several different types

moonpie

evthelegend vivitek d554

Single 0.55” DLP® Technology by TI
SVGA (800 x 600)
5,000/6,000 Hours (Normal/Eco), 190W

"even though it uses PWM."

You are aware your lamp projector does not use PWM?

smilem

If DLP is safe I'm real Santa Claus.

evthelegend

smilem yea on paper it doest make any sense but it works for me somehow that's why im making this post lol

evthelegend

moonpie lol ok

smilem

get to nearest ZEPTER distributor, and test a pair of

Fullerene C60 doped glasses lenses. Make sure to choose indoor lighter color version.

https://shop.zepter.com/Medical/smart-glasses/HYPERLIGHT-OPTICS-SET,-INDOOR-LENSES

I wonder if they remove the flicker? The price is 180Eur if you manage to get good discount. But only if it works as claimed. Perhaps these could remove the dithering too.

Donux

smilem I bet most people will pay 180 EUR if they would surely know it works. They should have very accesable return policy, since this is health product that aims to tackle very specific problem. But if they don't, then perpahs they are not that confident themselves it actually works.

whystrainwhy

The only thing I can comment here is that I remember watching a youtube video about polarization of monitors and how some people are sensitive to it. Some people had mentioned doing a simple test using polarized sunglasses and then turning the monitor 90 degrees to see the differences in polarization and if that might be causing the issue.

What's weird too is that I'm not sure if this kind of wavelength/energy thing (I'm not quite sure what exactly to describe it) tolerance is a part of it because I went back to try to play old Playstation 1 games like Final Fantasy 7 and Metal Gear Solid, and on even the original PS1 hardware connected via HDMI to a TV, I was getting headaches and even the FF7 Steam version I couldn't play longer than an hour using my "safe" PC. So I have no idea why this is happening but I think it's good to discuss it and possibly add to a list of things to "try" heh