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AV and Multimedia Related Thread, Overhead video projector too bright - Teacher complains! in Technical; Hi all - We've had a complaint from a teacher that her video projector is too bright and it is ...
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    adhutton's Avatar
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    Overhead video projector too bright - Teacher complains!

    Hi all -

    We've had a complaint from a teacher that her video projector is too bright and it is giving her sight problems/headaches.

    I have been to have a look and I have to agree that it is bright...but gives a fantastic picture on the whiteboard.

    Have tried adjusting the lamp/picture via the projector menu (Sanyo projector by the way) but she says it doesn't make it any better.

    Have any of you come across this issue before? If so, can you suggest any solution(s)?

    Cheers - Andrew

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    localzuk's Avatar
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    I doubt its the brightness that's the problem to be honest - whether the projector is 2500 lumens or 2000 lumens, it'll still cause the issues. The problem is its position - the angle from the ceiling is likely right in the eye-line for the teacher.

    The only real fix to this problem is to move the projector higher up, and adjust the keystone - else get a short throw projector that doesn't get in the eye-line at all.

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    adhutton (9th March 2011)

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    Really??? (It's not April 1st already??)

    We'll have it!

    Or exchange it for one of our dull, red hue effect projectors.....

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    adhutton (9th March 2011)

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    CESIL's Avatar
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    You lucky, lucky, barsteward...I dream of having a teacher complain about a projector being too bright...

    Seriously though, what is the lumens rating of the unit?

    Or is the ceiling a bit low...we have a projector in a hut that is much lower than all the others and any tallish teacher will have problems avoiding the beam...

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    SYNACK's Avatar
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    Solution: Sunglasses

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    adhutton (9th March 2011)

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    adhutton's Avatar
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    Quote Originally Posted by CESIL View Post
    You lucky, lucky, barsteward...I dream of having a teacher complain about a projector being too bright...
    Yep, it is the stuff dreams are made of....I couldn't quite believe it myself when I heard....but I still need to find a solution to the problem - preferably a low-cost solution...! Any cheap ideas folks...filters....mirrors...???

    Andrew

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    localzuk's Avatar
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    Quote Originally Posted by adhutton View Post
    Yep, it is the stuff dreams are made of....I couldn't quite believe it myself when I heard....but I still need to find a solution to the problem - preferably a low-cost solution...! Any cheap ideas folks...filters....mirrors...???

    Andrew
    Nothing cheap that I know of. What height is the ceiling? Can you not lop some of the mounting pole off and raise it up?

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    Quote Originally Posted by localzuk View Post
    Nothing cheap that I know of. What height is the ceiling? Can you not lop some of the mounting pole off and raise it up?
    Unfortunately our school has quite low ceilings and it is already about as far up as it will go.

    A

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    Quote Originally Posted by localzuk View Post
    Nothing cheap that I know of. What height is the ceiling? Can you not lop some of the mounting pole off and raise it up?
    That would be the most obvious solution.

    As was said, the problem isnt the lumens of the projector but the height of it. It's too close to the teachers eye line and that's why its causing a problem, if you raise it up and alter the angle then it wont be in direct eye line (or close to) solving the problem.

    Cutting down the pole and raising it up is the easiest solution.....

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    localzuk's Avatar
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    Quote Originally Posted by adhutton View Post
    Unfortunately our school has quite low ceilings and it is already about as far up as it will go.

    A
    You're going to be out of luck then I'm afraid - I'd be looking at replacing the projector with an ultra short throw, wall mounted one. If a teacher is complaining about it dazzling them and giving headaches then you sort of have to change it.

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    adhutton (9th March 2011)

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    Dig a pit in front of the board for the teacher to stand in.

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    adhutton (9th March 2011), AngryTechnician (4th March 2011)

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    Quote Originally Posted by localzuk View Post
    You're going to be out of luck then I'm afraid - I'd be looking at replacing the projector with an ultra short throw, wall mounted one. If a teacher is complaining about it dazzling them and giving headaches then you sort of have to change it.
    Think a short throw is going to be the only option really isnt it....

    Quote Originally Posted by MYK-IT View Post
    Dig a pit in front of the board for the teacher to stand in.
    I prefer this option though!!

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    JJonas's Avatar
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    Quote Originally Posted by MYK-IT View Post
    Dig a pit in front of the board for the teacher to stand in.
    Use a saw from the DT Department to shorten teacher at the knees?

    on a serious note wasn’t one of the teaching unions advising schools to only install short throw projectors as a way to protect their members from long term sight damage?

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    adhutton (9th March 2011)

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    Jamman960's Avatar
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    Do any other rooms have a similar setup? and if so are other teachers complaining of the same thing? the last thing you want is to change one room and then have everyone else decide theirs need changing also

    Swapping in a short/ultrashort teacher might be an easier solution

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    adhutton (9th March 2011)

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    BECTA had guidelines that 1500/1800 lumens was the MAXIMUM recommended where the teacher would be standing in the beam. If this wasn't bright enough they reccomended fitting blinds rather than increasing brightness. I remember this as we had a huge fight with an artist that wanted (and got, against my views) a 3k lumen projector.

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    adhutton (9th March 2011)

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