Hello everyone,
Recently I noticed that my eyes are sore for few days after watching my DIY projector. Have any one experienced this problem? I'm using Lexan glass for heat protection so I don't suppose this is related to UV, but who knows. Recently I also added tempered glass to improve my light box temperature and maximize UV and IR protection. My screen is 96” wide and I watch it from ~ 12’, according to distance calculator this is the right distance. Screen is sharp and bright (I’m using 15” LCD design with 400W HID bulb and magnetic ballast). Any suggestions?
Recently I noticed that my eyes are sore for few days after watching my DIY projector. Have any one experienced this problem? I'm using Lexan glass for heat protection so I don't suppose this is related to UV, but who knows. Recently I also added tempered glass to improve my light box temperature and maximize UV and IR protection. My screen is 96” wide and I watch it from ~ 12’, according to distance calculator this is the right distance. Screen is sharp and bright (I’m using 15” LCD design with 400W HID bulb and magnetic ballast). Any suggestions?
I would guess that you are experiencing fatigue from each iris "working" in a completely dark room with the alternating bright and dark scenes present in most films.
You may want to take a look at this discussion a few of us had over on the AV Science forum a while back, concerning how to provide enough ambient light to "bias" the iris so it isn't working as hard:
http://archive.avsforum.com/avs-vb/showthread.php?threadid=106303
I would pay special attention to the posts by Guy Kuo, Mark Hunter and Steve Smallcombe. While somewhat counterintuitive, I have found that viewing with bias lighting on is not only easier on my eyes, but the image looks vastly better.
You may want to take a look at this discussion a few of us had over on the AV Science forum a while back, concerning how to provide enough ambient light to "bias" the iris so it isn't working as hard:
http://archive.avsforum.com/avs-vb/showthread.php?threadid=106303
I would pay special attention to the posts by Guy Kuo, Mark Hunter and Steve Smallcombe. While somewhat counterintuitive, I have found that viewing with bias lighting on is not only easier on my eyes, but the image looks vastly better.
When I was at school (many years ago!) it was standard practice to black out the room to watch TV. I spent a lot of time persuading the teachers that it was not only unnecessary but increased eye fatigue, and eventually got the point across.
I have a dimmer switch which goes very low and some suitable lighting to go with that, and it really does the trick, and makes watching movies even better 😀
I sort of had the same problem, but when I first built my projector I had eye strain as I had to get use to it.
I sort of had the same problem, but when I first built my projector I had eye strain as I had to get use to it.
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