[ChrisMcCann]

Does anyone know if there is any direct or indirect link with DLP projectors and causing aggrivation or seizures with people with epilepsy?

I am about to purchase an Optoma H79, but im slighly concerned incase the fast moving mirrors, or the fast colour wheel will cause a problem...

Thanks
Chris

[TicoTVA]

No I have not , but have heard of Rainbow effect. Samsung has claimed to have sped up the color wheel to reduce the rainbow effect

I'd contact them directly with epilepsy issue though

[Leo Kerr]

The mirrors 'flicker' at a speed fast enough that you shouldn't be aware of - at a minimum, they've got to be flickering at 23kHz, and probably more like 75kHz.

The RBE is a different story, and I haven't the slightest notion on how RBE and epilepsy might be related if at all. To me, it seems unlikely, but I really don't know much more than the stereotypes about epilepsy, either, so..

Leo

[ChrisMcCann]

I appreciate the replies. I took her to see a £6000 Sterling Sim2 DLP system and it gave her a really sore head and sore eyes in a very short period of time.

I think im going to have to get a Panasonic PTAE500 instead.

The film did have a lot of flashing at the start (Racing Stripes), so maybe that was something to do with it. I dont think im going to take the risk though.

THanks
Chris

[Ron-P]

Quote:

and it gave her a really sore head and sore eyes in a very short period of time.

I get the same. Picked up an X1 a couple of years ago and after about 15 minutes I experienced headaches and such from RBE. I went LCD and haven't looked back. Every film I tested with the X1 exhibited RBE, some worse then other but it was there in every film.

I've had a Panny 200u for 2.5 years, it's been a great machine. One of the pixels recently froze so I sold it and have a Sanyo Z3 arriving Monday. Sanyo has a 3 years P&L warranty vr Panasonics 1 year. That was a sizable factor in my decision not to go back to another Panny, let alone a pixel freezing after only 700 hours of use.

These newer LCD machine put out quite an impressive image don't fret too much about not going DLP.

[ChrisWiggles]

Th x1 will have a LOT more rainbows than the H70 obviously, but if you are picky about rainbows and fatigue, especially epilepsy, it sounds like single ship DLp is something worth avoiding.

[ChrisMcCann]

Sorry, i mean't to say i was going for a Panasonic PT-AE900, not the 500 which i already have. The Panasonic comes with a 2 year warranty and more importantly it has a 5500:1 contrast ratio with the Iris technology, which should be pretty impressive.

I wonder if people still get a sore head with a 3 chipper DLP? Ie: is it just the colour wheel that gives the headaches, or is it something to do with the mirrors?

Chris

[Ron-P]

I believe it has to do with the speed of the color wheel.

Also Chris, according to projectorpeople.com & projectorpoint.com the 900 only comes with a 1 year warranty.

[ChrisWiggles]

Quote:

I wonder if people still get a sore head with a 3 chipper DLP? Ie: is it just the colour wheel that gives the headaches, or is it something to do with the mirrors?

It is the colorwheel, 3-chippers are the least fatiguing displays in my experience, along with other 3-chip machines like LCD and LCOS.

[Kenneth Harden]

RBE is the reason we have a LCD RPTV. I absolutly cannot stand rainbows and I see them on everything (well, obviously single chip DLP's )