Suerte!!!!!!!!
se constituye de un sistema de dos lentes, de dos prismas reflectores y ...
cuyo soporte lleva los dos espejos y los dos prismas reflectores están ...
fcf.unse.edu.ar/pdf/lpr/p1b.PDF -

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Note added at 20 hrs 8 mins (2005-06-14 18:32:39 GMT)
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corner reflector
Buoy in San Diego Harbor. Note metal plates near the top configured at right angles to reflect radar signals.
Enlarge
Buoy in San Diego Harbor. Note metal plates near the top configured at right angles to reflect radar signals.

In optics and telecommunication, the term corner reflector has the following meanings:

1. A reflector consisting of three mutually perpendicular, intersecting, conducting flat surfaces, which returns a reflected electromagnetic wave to its point of origin. The three intersecting surfaces usually have square shapes. This is also known as a corner cube.

One such device, normally consisting of three metallic surfaces or screens perpendicular to one another, is designed to act as a radar target or marker. Another such device uses passive optical mirrors which returns an incident light beam in the opposite direction. Arrays of such retroreflectors are used in bicycle reflectors, automobile tail lights and as targets for laser range finding. Microscopic corner reflector structures can be incorporated into reflective paint for increased visibility at night.

2. A directional antenna using two mutually intersecting conducting flat surfaces.

3. In radar interpretation, an object that, by means of multiple reflections from smooth surfaces, produces a radar return of greater magnitude than might be expected from the physical size of the object.
http://www.answers.com/corner-cube

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Note added at 20 hrs 9 mins (2005-06-14 18:33:58 GMT)
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Esta utilización de los prismas reflectores (ilustrada en dos casos simples en la
... Prismas reflectores. a) Prisma de reflexión total. b) Prisma de Porro. ...
www.unalmed.edu.co/~daristiz/ notas_clase/clases_fisica_3/optica_snell.pdf