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DiscoverCircuits.com -- Hobby Corner
Last Updated on:
Tuesday, June 01, 2021 03:06 PM
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Homemade Corner Cube Reflector
Using Glass Mirror Tiles
designed
by David Johnson, P.E. (5/1/2012) |
| Corner cubes are optical
devices which have a unique property. Light sent into the front face will be
sent back to the source in a parallel path. As long as light can strike the
reflective surfaces the it will always be sent back to the source. Tiny corner
cubes can be molded into plastic for form an array of individual reflectors.
These are often used on bicycles to make them stand out at night. |
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The figure below shows a large corner cube reflector
you can make yourself. You simple glue three foot square glass tile mirrors
together. A sturdy cardboard box will help position the mirrors. One mirror is
positioned at the bottom of the box and the other two converge at the box sides. You
would align such an assembly so the light would enter at a 30-degree angle relative
to the bottom. The target for such an assembly would be the point where the three
mirrors converge. I have used such a simple mirror for some experiments and was able
to detect reflections over a distance of 10 miles. Larger mirror assemblies or even
multi-reflector arrays are also possible to increase the effective range. Perhaps
you might experiment with your own large reflector to see if a long range distant
measuring systems could be devised. Using two such reflectors it might be possible
to pinpoint your location using triangulation techniques. |
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