This section describes selected developments of special importance or interest due to the achievement of a breakthrough or innovation in technology. Ishikawa Optics & Arts Corp. has devel oped a Retro Reflective Zoning (RRZ) System enabling observation of three-dimensional images without having to use a special-purpose eyepiece, and has started selling a three-dimensional imaging system 3 DB-Vision that is an application of the RRZ system.
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