| http://www.w3.org/ns/prov#value | - Information for computation of distance and positional data produced by spot-position detection processing finding the spot position, that is, information such as a focal length of the projecting lens 427 and the focal length of the objective lens 432, a distance between the optical-axes thereof, a position (relative position from an optical axis of the projecting lens 427) of the laser light inci
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