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出典:Wikipedia
出典:『Wikipedia』 (2011/04/04 10:30 UTC 版)
A corner reflector is a retroreflector consisting of three mutually perpendicular, intersecting flat surfaces, which reflects waves back directly towards the source, but shifted (translated). Unlike a simple mirror, they work for a relatively wide-angle field of view. The three intersecting surfaces often have square shapes. This is also known as a corner cube.