Reflection symmetry is also known as bilateral symmetry. It is the "mirror" effect or when one object is reflected across a plane to create another instance of itself.

反射对称也叫做左右对称。反射对称就是一种镜子效映，忆■物体在平面内反射后得到另忆■自已。

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The Olympus SZ-12 offers the new Reflection magic filter takes the image and duplicates it across a horizontal or vertical plane of symmetry creating powerful illusions.

ENGADGET: Olympus unveils a cavalcade of point and shoot cameras and a PEN lens at CES