| http://www.w3.org/ns/prov#value | - The arrangement as recited in claim 1, wherein said scanning means includes a drive having a output shaft extending along a shaft axis, and wherein said mirror is a planar rotary mirror having opposite major mirror surfaces on both of which a light-reflecting coating is applied thereon, said rotary mirror being mounted for impingement by the light beam on the shaft for rotation about the shaft axi
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