Help eliminating glare on worktable from overhead fixtures

Discussion in 'Electrical Forum discussion & Blog' started by AcidWater, Dec 15, 2012.

  1. AcidWater

    AcidWater New Member

    Messages:
    123
    Location:
    .
    I have a 4x8 work table that's used for all sorts of activities. The ceiling is not too far above it; the joist bottoms are 4'10" but hanging a light puts the bottom of the fixture more like 4' 4" above the table.

    I get glare when placing coated paper (magazines, etc) on the table.

    I've got 4' fluorescent fixtures with a white plastic diffuser. Tried hanging them down the center of the table, and just now moved them so one is along each edge. Still get glare. The location where the glare reflects from changes when I move my body; it seems to be a certain angle of reflection. If I tilt the object a little to reduce make the angle from table to my eyes closer to 90 degrees the glare goes away.

    Aside from wearing polarized sunglasses, what can be done to locate the fixtures to get rid of glare?

    Is there some specialized diffuser that I could get?
  2. cacher_chick

    cacher_chick Test, Don't Guess!

    Messages:
    3,237
    Location:
    Land of Cheese
    My dentist's office has wall-mounted fluorescent fixtures which are pointed up at the white ceiling, and the light reflects down. I was thinking of using something similar in some areas of my house.
  3. AcidWater

    AcidWater New Member

    Messages:
    123
    Location:
    .
    Need to illuminate the TABLE not the walls. Bouncing off the ceiling only works for a high ceiling. Basement is less than 8' high.
  4. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,270
    Location:
    Cave Creek, Arizona
    Put the lights over your head so the light reflects away from you. Place them where you will not be in your own shadow, however. If the surface reflects light into your eyes there will ALWAYS be a glare.
  5. leejosepho

    leejosepho DIY scratch-pad engineer

    You might try experimenting with some Fresnel lenses. In a lighthouse or an overhead projector, they are used to direct a mass of light into a beam...but flip them over and they spread it out and diminish hot spots.
  6. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,816
    Location:
    New England
    Reflective surfaces like your glossy paper will always reflect things. The angle of incidence is equal to the angle of reflection...basic physics. Lights directly over the table WILL reflect directly back up - it's like a mirror. You need to sidelight things to bounce the light away from your eyes, but still illuminate the subject matter. But, that will potentially bounce it into your eyes as well...you may not get a choice of too many positions where the light is right.
  7. AcidWater

    AcidWater New Member

    Messages:
    123
    Location:
    .
    Forgot to mention that there are people all around the table, so can't use a light behind one person.

    I've seen business lighting sights talk about their techniques; diamond diffusers, polarizing filters, etc.
Similar Threads: Help eliminating
Forum Title Date
Electrical Forum discussion & Blog Need help with this circuit. Apr 5, 2014
Electrical Forum discussion & Blog AMPS? Need Help.. Mar 14, 2014
Electrical Forum discussion & Blog Under cabinet light help Mar 10, 2014
Electrical Forum discussion & Blog need help-use a 220V appliance in USA 110V Jan 29, 2014
Electrical Forum discussion & Blog Need some help figuring out what to do.... Dec 6, 2013

Share This Page