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GENERAL
GUIDELINES FOR LIGHTING YOUR HOLOGRAM WITH A SPOTLIGHT
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A hologram needs direct light from a spotlight,
shining down onto the hologram. This can be a regular
60 Watt ceiling spotlight. Use
regular clear spotlights only - frosted glass or mirrored front lightbulbs
will diffuse
the light.
Halogen spotlights are also very suitable for lighting holograms. If you are using halogen
light, it is best
to fit a spotlight with a 20 or 50 Watt bulb with a 12-14º gradient
(dispersion).
It is usually preferable to hang your hologram so that the centre of
the image is at eye-level.
The light should be shining down onto the hologram under
approx. 45 degrees. The distance from the
spotlight to the hologram should be at least 1
meter (3 ft), preferably 2-3 meter (6-9 ft).
(If a normal spotlight is too close to the hologram, the image
will be unsharp. Using a halogenlight can
solve this problem.)
In case you have other spotlights shining onto the same wall,
make sure these do not also shine onto
the hologram, as this might cause double images
(ghosting).
In some situations, the hologram might work better if it is
hanging a little bit higher and slightly tilted
forward. To do this, make a loop of steel
wire from the left to the right clip. Adjust the length of the
wire until it almost
reaches the top of the frame. Use this loop to hang the hologram from. Place some
light
object (a matchbox for instance) behind the top of the hologram.
Hanging tilted like this, you can see the
hologram from a lower viewpoint further away.
Holograms look very nice when lit by direct sunlight. You can
try this out, but it is advisable not
to expose your hologram to bright sunlight for more
than a couple of minutes, as it might get damaged
by the heat and the ultra-violet rays.
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