Back to Technology
Light Blocking Features
Enjoy sleeping in on a sunny day, or viewing a movie in a dark home theater. With the special woven and
non-woven materials of eclipse curtains you can block over 99% of light.
What makes blackout curtains block light?
Not all curtains block light, in fact most don't. In order to block light effectively, curtains need to be made of a
light-blocking fabric, and manufactured in a manner that weaves the fibers together in an especially tight
manner. Very few manufacturers have the broad experience to manufacture energy-saving blackout curtains, and
no one puts more effort and testing into the process than eclipse™ curtains.
How do we know that eclipse curtains block over 99% of light?
We continually test eclipse curtains to ensure that they meet the specifications that we promise. Our testing is
conducted by independent laboratories who utilize a wide range of tests to ensure that our curtains perform according
to our strict standards. No other blackout curtain manufacturer tests their curtains as frequently or as thoroughly
as we test eclipse cutains.
We use rigorous scientific testing to measure how effectively eclipse curtains block light. A sensor measures the amount
of light reaching it from an incandescent light source - first with no curtain in between the light source and the sensor,
and then again with a curtain placed between the light source and the sensor. The curtain's ability to block light is then
calculated as a function of the difference between these two readings.
How Light Intensity is Measured
Light is measured in units called Lux, and the eye can see an extremely wide range of Lux values, ranging from very
dark conditions (such as a starlit night) to very bright conditions (such as direct sunlight).
Eclipse curtains can reduce light by a factor of over 200 times. For example, light entering an eclipse curtain at 100,000
lux can be reduced down to 500 lux. That is like reducing the size of the Empire State Building from 1250 feet down to
just over 6 feet! It's pretty amazing when you consider just how much light is blocked
out by an eclipse blackout curtain.