+ Post New Thread
Results 1 to 14 of 14
Hardware Thread, DLP Projectors in Technical; I've just had a call from my contact at Panacea. Apparently, France have recently banned DLP Projectors from the classroom ...
  1. #1
    Norphy's Avatar
    Join Date
    Jan 2006
    Location
    Harpenden
    Posts
    2,237
    Thank Post
    50
    Thanked 273 Times in 211 Posts
    Blog Entries
    6
    Rep Power
    113

    DLP Projectors

    I've just had a call from my contact at Panacea. Apparently, France have recently banned DLP Projectors from the classroom as they can trigger epileptic fits. He says that suppliers have been been slashing prices on DLP projectors in this country because they anticipate our government and Becta doing the same.

    Has anyone heard anything about this or is it a load of horse manure? Being as at least 80% of our projectors are DLPs this is a cause of concern to say the least.

  2. #2
    ChrisC's Avatar
    Join Date
    Mar 2006
    Location
    Dorset
    Posts
    767
    Thank Post
    2
    Thanked 1 Time in 1 Post
    Rep Power
    18

    Re: DLP Projectors

    Surely this would have been found before.....unless no one who suffers from epilepsy has used them until now.......

    If it's true, it's probably linked with the same reasons as rainbow/halo effect!

    Anything with intense light and spining colours is going to effect people who are light sensitive!!!

    Chris

  3. #3
    ChrisC's Avatar
    Join Date
    Mar 2006
    Location
    Dorset
    Posts
    767
    Thank Post
    2
    Thanked 1 Time in 1 Post
    Rep Power
    18

    Re: DLP Projectors

    Just to add, we've only got lcd projectors here.

    Chris

  4. #4

    Join Date
    Nov 2005
    Location
    Middlesbrough
    Posts
    402
    Thank Post
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0

    Re: DLP Projectors

    I've banned DLP projectors from my life, I can't stand them.

    Stand in front of one and move yor head side to side quickly or wave you hand in front of your face, you'll see a horrible rainbow effect that once i've seen, I can't get rid of!

  5. #5
    ChrisC's Avatar
    Join Date
    Mar 2006
    Location
    Dorset
    Posts
    767
    Thank Post
    2
    Thanked 1 Time in 1 Post
    Rep Power
    18

    Re: DLP Projectors

    That sounds like something that can scar you for life.........or your retinas at least.

    Chris

  6. #6
    Guest

    Re: DLP Projectors

    The rainbow effect is a common problem with single chip DLP, but not all people are affected by it.

    Swings and roundabouts. rainbow vs chicken wire

  7. #7

    john's Avatar
    Join Date
    Sep 2005
    Location
    London
    Posts
    10,511
    Thank Post
    1,493
    Thanked 1,050 Times in 919 Posts
    Rep Power
    302

    Re: DLP Projectors

    I have never had the chicken wire effect with my LCDs, or maybe i don't notice it but i am not keen on DLPs and dont recomend them for use in schools.

  8. #8

    DaveP's Avatar
    Join Date
    Oct 2006
    Location
    Can't talk now: The mother-ship is calling!
    Posts
    8,781
    Thank Post
    351
    Thanked 1,274 Times in 870 Posts
    Blog Entries
    4
    Rep Power
    1126
    Quote Originally Posted by john View Post
    I have never had the chicken wire effect with my LCDs, or maybe i don't notice it but i am not keen on DLPs and dont recomend them for use in schools.
    Why would you not recommend them? We are thinking about DLPs at the moment as our existing LCD projectors are constantly in need of filter cleaning and we have had major issues with lens discoloration/blooming. Personally I would like to have a set of projectors which are not so high maintenance and it sounds like DLP might be the way to go.

  9. #9


    Join Date
    Oct 2006
    Posts
    3,411
    Thank Post
    184
    Thanked 356 Times in 285 Posts
    Rep Power
    148
    ^ Seems the way to go for us too but i too can see the rainbow ALOT! It drives me mad as all i need to do is refocus or turn my head slightly and i can see it.

  10. #10

    Join Date
    Mar 2008
    Location
    Yorkshire
    Posts
    27
    Thank Post
    0
    Thanked 4 Times in 4 Posts
    Rep Power
    0
    I have manufacturers coming to see me all the time, the last being Sony and nobody has mentioned this to me

  11. #11

    plexer's Avatar
    Join Date
    Dec 2005
    Location
    Norfolk
    Posts
    13,341
    Thank Post
    624
    Thanked 1,584 Times in 1,421 Posts
    Rep Power
    414
    Why are people looking into the projector?

    Can you not blank the screen before you turn around, step out of the way and unblank it?

    Ben

  12. #12

    john's Avatar
    Join Date
    Sep 2005
    Location
    London
    Posts
    10,511
    Thank Post
    1,493
    Thanked 1,050 Times in 919 Posts
    Rep Power
    302
    My issue with DLP I have found the colours are just not as sharp as LCD models are, I don't mind the filter clean issue as I would rather have a bright and clear projector than a muddy looking one like a HP one.

  13. #13

    DaveP's Avatar
    Join Date
    Oct 2006
    Location
    Can't talk now: The mother-ship is calling!
    Posts
    8,781
    Thank Post
    351
    Thanked 1,274 Times in 870 Posts
    Blog Entries
    4
    Rep Power
    1126
    Quote Originally Posted by john View Post
    My issue with DLP I have found the colours are just not as sharp as LCD models are, I don't mind the filter clean issue as I would rather have a bright and clear projector than a muddy looking one like a HP one.
    My issue [apart from the constant cleaning rounds on 40+ projectors] is the dimness of the image, even with a new lamp installed, when the lens has this 'cast' on it. An arc of colour thicker at one end than the other runs along the bottom of most of our LCD projector images. It will be more expensive to have them serviced than replace them. I don't want to be in that position again. If it was just one or two I could accept it, but it is happening to nearly all of the projectors and all of the colored arcs described above have the same shape.

  14. #14

    DaveP's Avatar
    Join Date
    Oct 2006
    Location
    Can't talk now: The mother-ship is calling!
    Posts
    8,781
    Thank Post
    351
    Thanked 1,274 Times in 870 Posts
    Blog Entries
    4
    Rep Power
    1126
    Quote Originally Posted by john View Post
    My issue with DLP I have found the colours are just not as sharp as LCD models are, I don't mind the filter clean issue as I would rather have a bright and clear projector than a muddy looking one like a HP one.
    My issue [apart from the constant cleaning rounds on 40+ projectors] is the dimness of the image, even with a new lamp installed, when the lens has this 'cast' on it. An arc of colour thicker at one end than the other runs along the bottom of most of our LCD projector images. It will be more expensive to have them serviced than replace them. I don't want to be in that position again.

    If it was just one or two I could accept it, but it is happening to nearly all of the projectors and all of the coloured arcs described above have the same shape.

SHARE:
+ Post New Thread

Similar Threads

  1. projectors and resolution
    By chrbb in forum Hardware
    Replies: 15
    Last Post: 14th April 2013, 12:39 PM
  2. Projectors
    By button_ripple in forum Hardware
    Replies: 11
    Last Post: 5th December 2007, 04:08 PM
  3. HP Projectors
    By linuxgirlie in forum Hardware
    Replies: 7
    Last Post: 12th June 2007, 08:20 PM
  4. do you keep projectors on all day?
    By chrbb in forum Hardware
    Replies: 37
    Last Post: 27th April 2007, 02:54 PM
  5. Projectors and Privacy
    By TechMonkey in forum How do you do....it?
    Replies: 8
    Last Post: 11th July 2006, 09:34 PM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •