Not wishing to bash other projection technology camps, but wishing to increase the information available (this is after all and information site, not just the CRT forum, or so I've been told). I would like to draw to your attention to this pdf . I will quote a section to give you a feel of what it involves:
"Flicker vertigo is an imbalance in brain-cell activity
caused by exposure to the low-frequency flickering
(or flashing) of a relatively bright light (such as
a rotating beacon; a strobe light; or sunlight seen
through a windmilling propeller). Flicker vertigo
can result in nausea, dizziness, headache, panic,
confusion, and in rare cases seizures and loss
of consciousness, which could result in a pilot’s loss
of control of an aircraft."
Having done a search for the word "flicker" in other Display Devices areas, it seems that lamp flicker can be a real problem. Unlike rainbows, it's not limited to DLP. Even CRT projectors can be forced to flicker, but increasing refresh rates makes it's more of a (nasty) novelty, and not a health risk.
You'd think mental health would be an important factor when choosing a display device, but then what would I know, I'm just a Luddite, clinging to outdated CRTs.
Cheers,
John
EDIT:You'd think mental health would be an important factor when designing a display device.......
"Flicker vertigo is an imbalance in brain-cell activity
caused by exposure to the low-frequency flickering
(or flashing) of a relatively bright light (such as
a rotating beacon; a strobe light; or sunlight seen
through a windmilling propeller). Flicker vertigo
can result in nausea, dizziness, headache, panic,
confusion, and in rare cases seizures and loss
of consciousness, which could result in a pilot’s loss
of control of an aircraft."
Having done a search for the word "flicker" in other Display Devices areas, it seems that lamp flicker can be a real problem. Unlike rainbows, it's not limited to DLP. Even CRT projectors can be forced to flicker, but increasing refresh rates makes it's more of a (nasty) novelty, and not a health risk.
You'd think mental health would be an important factor when choosing a display device, but then what would I know, I'm just a Luddite, clinging to outdated CRTs.
Cheers,
John
EDIT:You'd think mental health would be an important factor when designing a display device.......